Disposable Multi-stage Cigarette Holder Filter Apparatus

Abstract

The present invention discloses a disposable multi-stage cigarette holder filter apparatus, relates to the technical field of production of filter cigarette holders, and solves the problems of high cost, complex preparation process and poor filter effect of existing disposable filter cigarette holders. A composite filter rod, a filter layer, a cooling layer, a smoke dispersing layer, a cigarette holder connector and a cigarette body are sequentially connected from bottom to top into a cylinder structure; an outer packaging paper is arranged outside the cylinder structure; a plurality of air inlets are formed in a surface of the outer packaging paper corresponding to the smoke dispersing layer; and a filter capsule is arranged in the filter layer. The disposable multi-stage cigarette holder filter apparatus reduces the harm of tar and nicotine to smokers by introduction of air and multi-stage filtration, which uses mainly biomass materials wide in source as raw materials.

Claims

1. A disposable multi-stage cigarette holder filter apparatus, comprising a cigarette holder connector (5), an outer packaging paper (8), a smoke dispersing layer (10), a cooling layer (11), a filter capsule (12), a filter layer (13) and a composite filter rod (16), wherein the composite filter rod (16), the filter layer (13), the cooling layer (11), the smoke dispersing layer (10) and the cigarette holder connector (5) are sequentially connected from bottom to top into a cylinder structure (17); the outer packaging paper (8) is arranged outside the cylinder structure (17); an upper end of the cigarette holder connector (5) is connected to a cigarette body (18); a plurality of air inlets (9) are formed in a surface of the outer packaging paper (8) corresponding to the smoke dispersing layer (10); and the filter capsule (12) is arranged in the filter layer (13).

2. The disposable multi-stage cigarette holder filter apparatus according to claim 1, wherein the cigarette body (18) comprises a plurality of tobacco shreds (1), cigarette paper (2), connecting paper (3) and a filter rod (4), wherein the connecting paper (3) is arranged outside the filter rod (4); an upper end of the connecting paper (3) is connected to the cigarette paper (2); the plurality of tobacco shreds (1) are arranged in the cigarette paper (2); and a lower end of the filter rod (4) is connected to the cigarette holder connector (5).

3. The disposable multi-stage cigarette holder filter apparatus according to claim 2, wherein the cigarette holder connector (5) has a length of 10-25 mm and a diameter which is 95-105% of a diameter of the filter rod (4); an internal space of the cigarette holder connector (5) has a diameter larger at the top and smaller at the bottom; the cigarette holder connector (5) is provided with an inner cushion layer (7) at the bottom and a side cushion layer (6) at an inner wall; the side cushion layer (6) is made of rock wool; and the inner cushion layer (7) is made of high-efficiency filter cotton and has a thickness of 3-5 mm.

4. The disposable multi-stage cigarette holder filter apparatus according to claim 1, wherein the filter layer (13) comprises a first filter layer (13-1), a second filter layer (13-2), a third filter layer (13-3), and two separating layers (14), wherein the composite filter rod (16), the third filter layer (13-3), the second filter layer (13-2), the first filter layer (13-1), and the cooling layer (11) are connected sequentially from bottom to top; one of the separating layers (14) is arranged between the first filter layer (13-1) and the second filter layer (13-2); the other of the separating layers (14) is arranged between the second filter layer (13-2) and the third filter layer (13-3); and the filter capsule (12) is arranged in the first filter layer (13-1).

5. The disposable multi-stage cigarette holder filter apparatus according to claim 4, wherein the filter layer (13) has a thickness of 30-50 mm; and the filter capsule (12) has a particle size which is 50-80% of a diameter of the filter layer (13).

6. The disposable multi-stage cigarette holder filter apparatus according to claim 4, wherein the separating layers (14) have a thickness of 3-5 mm and are made of high-efficiency filter cotton.

7. The disposable multi-stage cigarette holder filter apparatus according to claim 1, wherein a filter cushion layer (15) is arranged between the composite filter rod (16) and the filter layer (13), and the filter cushion layer (15) has a thickness of 3-5 mm and is made of high-efficiency filter cotton.

8. The disposable multi-stage cigarette holder filter apparatus according to claim 1, wherein the composite filter rod (16) has a thickness of 10-20 mm and is prepared by uniformly mixing plant fiber with acetate fiber at a ratio of 10:90 to 35:65.

9. The disposable multi-stage cigarette holder filter apparatus according to claim 1, wherein the air inlets (9) have a pore diameter of 0.5-1.5 mm and a pore density of 25-100 pores/cm.sup.2.

10. The disposable multi-stage cigarette holder filter apparatus according to claim 1, wherein the smoke dispersing layer (10) is made of rock wool, which has a thickness of 5-15 mm and a porosity of 93-96%.

11. The disposable multi-stage cigarette holder filter apparatus according to claim 1, wherein the cooling layer (11) has a thickness of 10-15 mm and is made of quartz sand, and the quartz sand has a particle size of 2-5 mm and a moisture content of less than 5%.

12. The disposable multi-stage cigarette holder filter apparatus according to claim 1, wherein the filter capsule (12) is filled with water.

13. The disposable multi-stage cigarette holder filter apparatus according to claim 1, wherein the filter capsule (12) is filled with a mixture of water and a liquid spice, and the liquid spice is one or a mixture of several of a fruit flavoring agent, an alcohol flavoring agent, a tea flavoring agent, and a traditional Chinese medicine.

14. The disposable multi-stage cigarette holder filter apparatus according to claim 13, wherein the traditional Chinese medicine is one or a mixture of several of Mentha canadensis straw, Panax quinquefolius roots, Platycodon grandifloras roots, Glycyrrhiza uralensis roots, Lilium brownii var. viridulum, Eugenia caryophyllata, Ginkgo biloba leaves, Nelumbo leaves, Lonicera japonica flowers, Chrysanthemum morifolium flowers, Prunella vulgaris, Perilla frutescens leaves, and Taraxacum mongolicum.

15. The disposable multi-stage cigarette holder filter apparatus according to claim 1, wherein the filter layer (13) is prepared by mixing wood-based biochar, fiber particles and activated alumina particles at a ratio of 65:25:10 to 85:10:5; the wood-based biochar has a particle size of 0.5-3 mm; the fiber particles have a particle size of 1-4 mm; the activated alumina particles have a particle size of 1-3 mm; both the wood-based biochar and the fiber particles have a moisture content of less than 8%; and the activated alumina particles have an active ingredient content of not less than 98% and a moisture content of less than 2%.

16. The disposable multi-stage cigarette holder filter apparatus according to claim 15, wherein a raw material of the fiber particles is one or a mixture of several husks of corn straw, sorghum straw, and sugarcane straw; and a raw material of the wood-based biochar is wood.

17. A method for preparing the wood-based biochar of the disposable multi-stage cigarette holder filter apparatus according to claim 16, comprising the following steps: pyrolyzing wood first at 550-650 C. under an anoxic condition for 1.5-2.5 hours, then modifying with potassium hydroxide at a concentration of 0.01-0.1 mol/L for 24-48 hours, and finally modifying in a sealed manner with nitric acid at a concentration of 0.01-0.1 mol/L for 36-60 hours.

Description

BRIEF DESCRIPTION OF FIGURES

[0027] In the accompanying drawings:

[0028] FIG. 1 is a schematic diagram of a cross-sectional structure of the disposable multi-stage cigarette holder filter apparatus of the disclosure; and

[0029] FIG. 2 is a schematic diagram of a cross-sectional structure of a cigarette body of the disposable multi-stage cigarette holder filter apparatus of the disclosure.

[0030] In the drawings: 1. tobacco shreds; 2. cigarette paper; 3. connecting paper; 4. filter rod; 5. cigarette holder connector; 6. side cushion layer; 7. inner cushion layer; 8. outer packaging paper; 9. air inlet; 10. smoke dispersing layer; 11. cooling layer; 12. filter capsule; 13. filter layer; 13-1. first filter layer; 13-2. second filter layer; 13-3. third filter layer; 14. separating layers; 15. filter cushion layer; and 16. composite filter rod; 17. cylinder structure; 18. cigarette body.

DETAILED DESCRIPTION

[0031] Specific examples of the disclosure are further described in detail below with reference to the drawings:

Example 1

[0032] This example is specifically described with reference to FIG. 1 and FIG. 2. The disposable multi-stage cigarette holder filter apparatus of this example specifically includes a cigarette holder connector 5, an outer packaging paper 8, a smoke dispersing layer 10, a cooling layer 11, a filter capsule 12, a filter layer 13 and a composite filter rod 16. An upper end of composite filter rod 16 is connected to the filter layer 13. An upper end of the filter layer 13 is connected to the cooling layer 11. An upper end of the cooling layer 11 is connected to the smoke dispersing layer 10. An upper end of the smoke dispersing layer 10 is connected to the cigarette holder connector 5. An upper end of the cigarette holder connector 5 is connected to a cigarette body 18. The outer packaging paper 8 is arranged outside the cigarette holder connector 5, the smoke dispersing layer 10, the cooling layer 11, the filter layer 13 and the composite filter rod 16. A plurality of air inlets 9 are formed in a surface of the outer packaging paper 8 corresponding to the smoke dispersing layer 10. The filter capsule 12 is arranged in filter layer 13.

[0033] The cigarette body 18 includes a plurality of tobacco shreds 1, cigarette paper 2, connecting paper 3 and a filter rod 4. The connecting paper 3 is arranged outside the filter rod 4. An upper end of the connecting paper 3 is connected to the cigarette paper 2. The plurality of tobacco shreds 1 are arranged in cigarette paper 2. A lower end of the filter rod 4 is connected to the cigarette holder connector 5. The filter rod 4 is a commonly used filter rod in cigarettes.

[0034] The cigarette holder connector 5 has a length of 10 mm and a diameter which is 95-105% of a diameter of the filter rod 4. The internal space of the cigarette holder connector 5 has a diameter larger at the top and smaller at the bottom. The cigarette holder connector 5 is provided with an inner cushion layer 7 at the bottom and a side cushion layer 6 at the inner wall. The side cushion layer 6 is made of rock wool and has a thickness gradually increasing from top to bottom. The inner cushion layer 7 is made of high-efficiency filter cotton and has a thickness of 3 mm.

[0035] The filter layer 13 includes a first filter layer 13-1, a second filter layer 13-2, a third filter layer 13-3, and two separating layers 14. An upper end of the composite filter rod 16 is connected to the third filter layer 13-3. An upper end of the third filter layer 13-3 is connected to the second filter layer 13-2. An upper end of the second filter layer 13-2 is connected to the first filter layer 13-1. An upper end of the first filter layer 13-1 is connected to the cooling layer 11. One of the separating layers 14 is arranged between the first filter layer 13-1 and the second filter layer 13-2. The other separating layers 14 is arranged between the second filter layer 13-2 and the third filter layer 13-3. The filter capsule 12 is arranged in the first filter layer 13-1.

[0036] The filter layer 13 has a thickness of 30 mm. The filter capsule 12 has a particle size which is 50% of a diameter of the filter layer 13, and one filter capsule 12 is arranged.

[0037] The separating layers 14 have a thickness of 3 mm and are made of high-efficiency filter cotton.

[0038] A filter cushion layer 15 is arranged between the composite filter rod 16 and the filter layer 13. The filter cushion layer 15 has a thickness of 3 mm and is made of high-efficiency filter cotton, with a PM2.5 particle filtration rate of 95% or higher.

[0039] The composite filter rod 16 has a thickness of 10 mm and is prepared by uniformly mixing plant fiber with acetate fiber at a ratio of 10:90.

[0040] The air inlets 9 have a pore diameter of 1.0-1.5 mm and a pore density of 25 pores/cm.sup.2.

[0041] The smoke dispersing layer 10 is made of rock wool, which has a thickness of 5 mm and a porosity of 93%.

[0042] The cooling layer 11 has a thickness of 10 mm and is made of quartz sand. The quartz sand has a particle size of 2-5 mm and a moisture content of less than 5%.

[0043] The filter capsule 12 is filled with water (accounting for 95%) and a liquid spice. The liquid spice is a mixture of Mentha canadensis straw and a traditional Chinese medicine at a ratio of 1:4. The traditional Chinese medicine is a mixture of Panax quinquefolius roots, Platycodon grandifloras and Glycyrrhiza uralensis roots at a ratio of 0.2:0.3:0.5.

[0044] The filter layer 13 is prepared by mixing wood-based biochar, fiber particles and activated alumina particles at a ratio of 65:25:10. The wood-based biochar has a particle size of 0.5-3 mm. The fiber particles are a size of 1-4 mm. The activated alumina particles are a size of 1-3 mm. Both the wood-based biochar and the fiber particles have a moisture content of less than 8%. The activated alumina particles have an active ingredient content of not less than 98% and a moisture content of less than 2%.

[0045] The fiber particles are prepared by mixing husks of corn straw and sorghum straw at a ratio of 1:1 by a preparation process including four steps: cleaning, sorting, granulation, and drying. A raw material of the wood-based biochar is wood.

[0046] A method for preparing the wood-based biochar of the disposable multi-stage cigarette holder filter apparatus includes the following steps: wood is first pyrolyzed at 550 C. under an anoxic condition for 2.5 hours, then modified with potassium hydroxide at a concentration of 0.01 mol/L for 48 hours, and finally modified in a sealed manner with nitric acid at a concentration of 0.01 mol/L for 60 hours.

[0047] With the disposable multi-stage cigarette holder filter apparatus prepared in this example, the removal rate for tar and nicotine reaches 97% or higher, the preparation cost is reduced by 82% compared to conventional cigarette holders, and the smoking taste is significantly improved.

Example 2

[0048] This example is specifically described with reference to FIG. 1 and FIG. 2. The disposable multi-stage cigarette holder filter apparatus of this example specifically includes a cigarette holder connector 5, an outer packaging paper 8, a smoke dispersing layer 10, a cooling layer 11, a filter capsule 12, a filter layer 13 and a composite filter rod 16. An upper end of composite filter rod 16 is connected to the filter layer 13. An upper end of the filter layer 13 is connected to the cooling layer 11. An upper end of the cooling layer 11 is connected to the smoke dispersing layer 10. An upper end of the smoke dispersing layer 10 is connected to the cigarette holder connector 5. An upper end of the cigarette holder connector 5 is connected to a cigarette body 18. The outer packaging paper 8 is arranged outside the cigarette holder connector 5, the smoke dispersing layer 10, the cooling layer 11, the filter layer 13 and the composite filter rod 16. A plurality of air inlets 9 are formed in a surface of the outer packaging paper 8 corresponding to the smoke dispersing layer 10. The filter capsule 12 is arranged in the filter layer 13.

[0049] The cigarette body 18 includes a plurality of tobacco shreds 1, cigarette paper 2, connecting paper 3 and a filter rod 4. The connecting paper 3 is arranged outside the filter rod 4. An upper end of the connecting paper 3 is connected to the cigarette paper 2. The plurality of tobacco shreds 1 are arranged in cigarette paper 2. A lower end of the filter rod 4 is connected to the cigarette holder connector 5. The filter rod 4 is a commonly used filter rod in cigarettes.

[0050] The cigarette holder connector 5 has a length of 25 mm and a diameter which is 95-105% of a diameter of the filter rod 4. An internal space of the cigarette holder connector 5 has a diameter larger at the top and smaller at the bottom. The cigarette holder connector 5 is provided with an inner cushion layer 7 at the bottom and a side cushion layer 6 at the inner wall. The side cushion layer 6 is made of rock wool and has a thickness gradually increasing from top to bottom. The inner cushion layer 7 is made of high-efficiency filter cotton and has a thickness of 5 mm.

[0051] The filter layer 13 includes a first filter layer 13-1, a second filter layer 13-2, a third filter layer 13-3, and two separating layers 14. An upper end of the composite filter rod 16 is connected to the third filter layer 13-3. An upper end of the third filter layer 13-3 is connected to the second filter layer 13-2. An upper end of the second filter layer 13-2 is connected to the first filter layer 13-1. An upper end of the first filter layer 13-1 is connected to the cooling layer 11. One of the separating layers 14 is arranged between the first filter layer 13-1 and the second filter layer 13-2. The other separating layers 14 is arranged between the second filter layer 13-2 and the third filter layer 13-3. The filter capsule 12 is arranged in the first filter layer 13-1.

[0052] The filter layer 13 has a thickness of 50 mm. The filter capsule 12 has a particle size which is 80% of a diameter of the filter layer 13, and one filter capsule 12 is arranged.

[0053] The separating layers 14 have a thickness of 5 mm and are made of high-efficiency filter cotton.

[0054] A filter cushion layer 15 is arranged between the composite filter rod 16 and the filter layer 13. The filter cushion layer 15 has a thickness of 5 mm and is made of high-efficiency filter cotton, with a PM2.5 particle filtration rate of 95% or higher.

[0055] The composite filter rod 16 has a thickness of 20 mm and is prepared by uniformly mixing plant fiber with acetate fiber at a ratio of 35:65.

[0056] The air inlets 9 have a pore diameter of 0.5-1.0 mm and a pore density of 100 pores/cm.sup.2.

[0057] The smoke dispersing layer 10 is made of rock wool, which has a thickness of 15 mm and a porosity of 96%.

[0058] The cooling layer 11 has a thickness of 10 mm and is made of quartz sand. The quartz sand has a particle size of 2-5 mm and a moisture content of less than 5%.

[0059] The filter capsule 12 is filled with water accounting for 100% without any other components.

[0060] The filter layer 13 is prepared by mixing wood-based biochar, fiber particles and activated alumina particles at a ratio of 85:10:5. The wood-based biochar has a particle size of 0.5-3 mm. The fiber particles are a size of 1-4 mm. The activated alumina particles are a size of 1-3 mm. Both the wood-based biochar and the fiber particles have a moisture content of less than 8%. The activated alumina particles have an active ingredient content of not less than 98% and a moisture content of less than 2%.

[0061] The fiber particles are prepared from husks of corn straw as raw material by a preparation process including four steps: cleaning, sorting, granulation, and drying. The raw material of the wood-based biochar is wood.

[0062] A method for preparing the wood-based biochar of the disposable multi-stage cigarette holder filter apparatus includes the following steps: wood is first pyrolyzed at 650 C. under an anoxic condition for 1.5 hours, then modified with potassium hydroxide at a concentration of 0.1 mol/L for 24 hours, and finally modified in a sealed manner with nitric acid at a concentration of 0.1 mol/L for 36 hours.

[0063] With the disposable multi-stage cigarette holder filter apparatus prepared in this example, the removal rate for tar and nicotine reaches 98% or higher, the preparation cost is reduced by 85% compared to conventional cigarette holders, and the smoking taste is significantly improved.

Example 3

[0064] This example is specifically described with reference to FIG. 1 and FIG. 2. The disposable multi-stage cigarette holder filter apparatus of this example specifically includes a cigarette holder connector 5, an outer packaging paper 8, a smoke dispersing layer 10, a cooling layer 11, a filter capsule 12, a filter layer 13 and a composite filter rod 16. An upper end of composite filter rod 16 is connected to filter layer 13. An upper end of the filter layer 13 is connected to the cooling layer 11. An upper end of the cooling layer 11 is connected to the smoke dispersing layer 10. An upper end of the smoke dispersing layer 10 is connected to the cigarette holder connector 5. An upper end of the cigarette holder connector 5 is connected to a cigarette body 18. The outer packaging paper 8 is arranged outside the cigarette holder connector 5, the smoke dispersing layer 10, the cooling layer 11, the filter layer 13 and the composite filter rod 16. A plurality of air inlets 9 are formed in a surface of the outer packaging paper 8 corresponding to the smoke dispersing layer 10. Filter capsule 12 is arranged in filter layer 13.

[0065] The cigarette body 18 includes a plurality of tobacco shreds 1, cigarette paper 2, connecting paper 3 and a filter rod 4. The connecting paper 3 is arranged outside the filter rod 4. An upper end of the connecting paper 3 is connected to the cigarette paper 2. The plurality of tobacco shreds 1 are arranged in cigarette paper 2. A lower end of the filter rod 4 is connected to the cigarette holder connector 5. The filter rod 4 is a commonly used filter rod in cigarettes.

[0066] The cigarette holder connector 5 has a length of 15 mm and a diameter which is 95-105% of a diameter of the filter rod 4. An internal space of the cigarette holder connector 5 has a diameter larger at the top and smaller at the bottom. The cigarette holder connector 5 is provided with an inner cushion layer 7 at the bottom and a side cushion layer 6 at the inner wall. The side cushion layer 6 is made of rock wool and has a thickness gradually increasing from top to bottom. The inner cushion layer 7 is made of high-efficiency filter cotton and has a thickness of 4 mm.

[0067] The filter layer 13 includes a first filter layer 13-1, a second filter layer 13-2, a third filter layer 13-3, and two separating layers 14. An upper end of the composite filter rod 16 is connected to the third filter layer 13-3. An upper end of the third filter layer 13-3 is connected to the second filter layer 13-2. An upper end of the second filter layer 13-2 is connected to the first filter layer 13-1. An upper end of the first filter layer 13-1 is connected to the cooling layer 11. One of the separating layers 14 is arranged between the first filter layer 13-1 and the second filter layer 13-2. The other separating layers 14 is arranged between the second filter layer 13-2 and the third filter layer 13-3. The filter capsule 12 is arranged in the first filter layer 13-1.

[0068] The filter layer 13 has a thickness of 40 mm. The filter capsule 12 has a particle size which is 70% of a diameter of the filter layer 13, and one filter capsule 12 is arranged.

[0069] The separating layers 14 have a thickness of 4 mm and are made of high-efficiency filter cotton.

[0070] A filter cushion layer 15 is arranged between the composite filter rod 16 and the filter layer 13. The filter cushion layer 15 has a thickness of 4 mm and is made of high-efficiency filter cotton, with a PM2.5 particle filtration rate of 95% or higher.

[0071] The composite filter rod 16 has a thickness of 15 mm and is prepared by uniformly mixing plant fiber with acetate fiber at a ratio of 20:80.

[0072] The air inlets 9 have a pore diameter of 0.8-1.2 mm and a pore density of 50 pores/cm.sup.2.

[0073] The smoke dispersing layer 10 is made of rock wool, which has a thickness of 10 mm and a porosity of 95%.

[0074] The cooling layer 11 has a thickness of 12 mm and is made of quartz sand. The quartz sand has a particle size of 2-5 mm and a moisture content of less than 5%.

[0075] The filter capsule 12 is filled with water (accounting for 98%) and a liquid spice (accounting for 2%). The liquid spice is a mixture of Mentha canadensis straw, a fruit flavoring agent and a traditional Chinese medicine at a ratio of 15:5.0:80. The traditional Chinese medicine is a mixture of Glycyrrhiza uralensis roots, Ginkgo biloba leaves, Nelumbo leaves, Lonicera japonica flowers and Chrysanthemum morifolium flowers at a ratio of 0.15:0.18:0.12:0.25:0.3.

[0076] The filter layer 13 is prepared by mixing wood-based biochar, fiber particles and activated alumina particles at a ratio of 77:15:8. The wood-based biochar has a particle size of 0.5-3 mm. The fiber particles are a size of 1-4 mm. The activated alumina particles are a size of 1-3 mm. Both the wood-based biochar and the fiber particles have a moisture content of less than 8%. The activated alumina particles have an active ingredient content of not less than 98% and a moisture content of less than 2%.

[0077] The fiber particles are prepared by mixing the husks of corn straw, sorghum straw and sugarcane straw at a ratio of 1:4:5 by a preparation process including four steps: cleaning, sorting, granulation, and drying. The raw material of the wood-based biochar is branches.

[0078] A method for preparing the wood-based biochar of the disposable multi-stage cigarette holder filter apparatus includes the following steps: wood is first pyrolyzed at 600 C. under an anoxic condition for 2.0 hours, then modified with potassium hydroxide at a concentration of 0.05 mol/L for 36 hours, and finally modified in a sealed manner with nitric acid at a concentration of 0.05 mol/L for 50 hours.

[0079] With the disposable multi-stage cigarette holder filter apparatus prepared in this example, the removal rate for tar and nicotine reaches 99% or higher, the preparation cost is reduced by 73% compared to conventional cigarette holders, and the smoking taste is significantly improved.

Example 4

[0080] This example is specifically described with reference to FIG. 1 and FIG. 2. The disposable multi-stage cigarette holder filter apparatus of this example specifically includes a cigarette holder connector 5, an outer packaging paper 8, a smoke dispersing layer 10, a cooling layer 11, a filter capsule 12, a filter layer 13 and a composite filter rod 16. An upper end of composite filter rod 16 is connected to the filter layer 13. An upper end of the filter layer 13 is connected to the cooling layer 11. An upper end of the cooling layer 11 is connected to the smoke dispersing layer 10. An upper end of the smoke dispersing layer 10 is connected to the cigarette holder connector 5. An upper end of the cigarette holder connector 5 is connected to a cigarette body 18. The outer packaging paper 8 is arranged outside the cigarette holder connector 5, the smoke dispersing layer 10, the cooling layer 11, the filter layer 13 and the composite filter rod 16. A plurality of air inlets 9 are formed in a surface of the outer packaging paper 8 corresponding to the smoke dispersing layer 10. The filter capsule 12 is arranged in the filter layer 13.

[0081] The cigarette body 18 includes a plurality of tobacco shreds 1, cigarette paper 2, connecting paper 3 and a filter rod 4. The connecting paper 3 is arranged outside the filter rod 4. An upper end of the connecting paper 3 is connected to the cigarette paper 2. The plurality of tobacco shreds 1 are arranged in the cigarette paper 2. A lower end of the filter rod 4 is connected to the cigarette holder connector 5. The filter rod 4 is a commonly used filter rod in cigarettes.

[0082] The cigarette holder connector 5 has a length of 22 mm and a diameter which is 95-105% of a diameter of the filter rod 4. An internal space of the cigarette holder connector 5 has a diameter larger at the top and smaller at the bottom. The cigarette holder connector 5 is provided with an inner cushion layer 7 at the bottom and a side cushion layer 6 at the inner wall. The side cushion layer 6 is made of rock wool and has a thickness gradually increasing from top to bottom. The inner cushion layer 7 is made of high-efficiency filter cotton and has a thickness of 4.5 mm.

[0083] The filter layer 13 includes a first filter layer 13-1, a second filter layer 13-2, a third filter layer 13-3, and two separating layers 14. An upper end of the composite filter rod 16 is connected to the third filter layer 13-3. An upper end of the third filter layer 13-3 is connected to the second filter layer 13-2. An upper end of the second filter layer 13-2 is connected to the first filter layer 13-1. An upper end of the first filter layer 13-1 is connected to the cooling layer 11. One of the separating layers 14 is arranged between the first filter layer 13-1 and the second filter layer 13-2. The other separating layers 14 is arranged between the second filter layer 13-2 and the third filter layer 13-3. The filter capsule 12 is arranged in the first filter layer 13-1.

[0084] Filter layer 13 has a thickness of 45 mm. Filter capsule 12 has a particle size which is 70% of the diameter of the filter layer 13, and one filter capsule 12 is arranged.

[0085] The separating layers 14 have a thickness of 3.5 mm and are made of high-efficiency filter cotton.

[0086] A filter cushion layer 15 is arranged between the composite filter rod 16 and the filter layer 13. The filter cushion layer 15 has a thickness of 4.5 mm and is made of high-efficiency filter cotton, with a PM2.5 particle filtration rate of equal to or higher than 95%.

[0087] The composite filter rod 16 has a thickness of 12 mm and is prepared by uniformly mixing plant fiber with acetate fiber at a ratio of 30:70.

[0088] The air inlets 9 have a pore diameter of 1.2 mm and a pore density of 80 pores/cm.sup.2.

[0089] The smoke dispersing layer 10 is made of rock wool, which has a thickness of 12 mm and a porosity of 94%.

[0090] The cooling layer 11 has a thickness of 12 mm and is made of quartz sand. The quartz sand has a particle size of 2-5 mm and a moisture content of less than 5%.

[0091] The filter capsule 12 is filled with water (accounting for 96%) and a liquid spice (accounting for 4%). The liquid spice is a mixture of a fruit flavoring agent and a traditional Chinese medicine at a ratio of 0.25:0.75. The traditional Chinese medicine is a mixture of Platycodon grandifloras roots, Glycyrrhiza uralensis roots, Lilium brownii var. viridulum, Lonicera japonica flowers and Chrysanthemum morifolium flowers at a ratio of 8:15:5:10:62.

[0092] The filter layer 13 is prepared by mixing wood-based biochar, fiber particles and activated alumina particles at a ratio of 80:12:8. The wood-based biochar has a particle size of 0.5-3 mm. The fiber particles are a size of 1-4 mm. The activated alumina particles are a size of 1-3 mm. Both the wood-based biochar and the fiber particles have a moisture content of less than 8%. The activated alumina particles have an active ingredient content of not less than 98% and a moisture content of less than 2%.

[0093] The fiber particles are prepared from the husks of sugarcane straw as raw material by a preparation process including four steps: cleaning, sorting, granulation, and drying. A raw material of the wood-based biochar is wood.

[0094] A method for preparing the wood-based biochar of the disposable multi-stage cigarette holder filter apparatus includes the following steps: wood is first pyrolyzed at 620 C. under an anoxic condition for 1.8 hours, then modified with potassium hydroxide at a concentration of 0.03 mol/L for 36 hours, and finally modified in a sealed manner with nitric acid at a concentration of 0.03 mol/L for 50 hours.

[0095] With the disposable multi-stage cigarette holder filter apparatus prepared in this example, the removal rate for tar and nicotine reaches 96% or higher, the preparation cost is reduced by 79% compared to conventional cigarette holders, and the smoking taste is significantly improved.

[0096] In conclusion, in the above examples, according to the disposable multi-stage cigarette holder filter apparatus of the disclosure, a small amount of air is allowed to enter through the air inlets 9 and the smoke dispersing layer 10, which improves the concentration and composition of smoke, and is more conducive to purifying the smoke generated by cigarette combustion. The cooling layer 11 is arranged to reduce the temperature of the smoke, and the air inlets 9, the smoke dispersing layer 10 and the cooling layer 11 work together to reduce the smoke temperature to 40 C. or lower, which reduces the impact of the smoke temperature on the filter layer 13 material and improves the filter effect of the filter layer 13 on the smoke. In addition to water, the filter capsule 12 contains other ingredient, namely one or a mixture of several of Mentha canadensis straw, a fruit flavoring agent, an alcohol flavoring agent, a tea flavoring agent, and a traditional Chinese medicine (one or a mixture of several of Panax quinquefolius roots, Platycodon grandifloras roots, Glycyrrhiza uralensis roots, Lilium brownii var. viridulum, Eugenia caryophyllata, Ginkgo biloba leaves, Nelumbo leaves, Lonicera japonica flowers, Chrysanthemum morifolium flowers, Prunella vulgaris, Perilla frutescens leaves, Taraxacum mongolicum, etc.), to adjust the composition of cigarette smoke according to the taste of smokers and improve the application value of the cigarette holder.

[0097] According to the disposable multi-stage cigarette holder filter apparatus of the disclosure, the moisture content of the filter layer 13 material is increased to 10% or above by humidifying the filter layer 13 with the filter capsule 12, thereby improving the filter effect of the filter layer 13 on the smoke and increasing the adsorption capacity of the filter layer 13 material by 50% or above compared to conventional materials. The filter layer 13 uses multi-stage filtration, which improves the filter performance of the material, and reaches an overall purification rate of higher than 95%. The filter layer 13 is mainly made of biomass materials and prepared by mixing wood-based biochar, fiber particles and activated alumina particles, which improves the filter effect and effectively reduces the cost of the cigarette holder by 70% or higher compared to conventional cigarette holders.

[0098] According to the disposable multi-stage cigarette holder filter apparatus of the disclosure, microparticles are effectively prevented from entering the human respiratory system by arranging the filter cushion layer 15 and the composite filter rod 16, which ensures the safety and hygiene of a cigarette smoking process. The apparatus of the disclosure achieves low-cost, high-efficiency purification of smoke with good purification effect, and effectively meets the demand of the smokers of low and medium consumption. The disposable multi-stage cigarette holder filter apparatus of the disclosure is simple in structure, low in cost, high in operability and wide in application range, and is of great significance for improving the physical health of smokers.

[0099] The specific examples described above provide further detailed descriptions of the objectives, technical solutions, and beneficial effects of the disclosure. It should be understood that the above descriptions are only specific examples of the disclosure and are not intended to limit the disclosure. The disclosure may also be a reasonable combination of the features described in the above examples. Any modifications, equivalent substitutions, improvements, and the like made within the spirit and principles of the disclosure should be included in the scope of protection of the disclosure.