DOUBLE-ROLLER HOSE PRESSING APPARATUS FOR PERISTALTIC PUMP

Abstract

A double-roller hose pressing apparatus for a peristaltic pump is provided. Two sides of a working hose (3) in the peristaltic pump are respectively provided with a set of flexible-rolling rollers (2) configured for pressing hose, and the two sets of rollers (2) are arranged in relative positions to clamp the working hose (3) during operation.

Claims

1. A double-roller hose pressing apparatus for peristaltic pump, comprising two flexible-rolling rollers respectively disposed at two sides of a working hose in a peristaltic pump, wherein the rollers are configured for pressing hose, and the two rollers are arranged in relative positions to clamp the working hose during operation.

2. The double-roller hose pressing apparatus for peristaltic pump as recited in claim 1, wherein one of the two rollers configured for pressing hose is a fixed hose-pressing roller assembly, and the other one of the rollers is a movable hose-pressing roller assembly.

3. The double-roller hose pressing apparatus for peristaltic pump as recited in claim 2, wherein the movable hose-pressing roller assembly comprises one driving assembly; the driving assembly comprises a driving device and a mounting base body; and the driving device drives the rollers to move in parallel to make the two rollers arranged in relative positions in a clamping state or a loosening state.

4. The double-roller hose pressing apparatus for peristaltic pump as recited in claim 1, wherein the two rollers configured for pressing hose are both movable hose-pressing roller assemblies, and the two movable hose-pressing roller assemblies clamp the working hose by synchronized swinging motion towards each other.

5. The double-roller hose pressing apparatus for peristaltic pump as recited in claim 4, wherein each of the movable hose-pressing roller assemblies comprises a roller component, an eccentric crankshaft, a synchronizing gear, a driven spiral gear and a driving spiral gear; the roller component is arranged at one end of the eccentric crankshaft; the driven spiral gear and the synchronizing gear are arranged on the eccentric crankshaft; the eccentric crankshaft swings by coordination between the driving spiral gear and the driven spiral gear; and the roller components of the two movable hose-pressing roller assemblies rotate synchronously by the synchronizing gears.

6. The double-roller hose pressing apparatus for peristaltic pump as recited in claim 1, wherein the two rollers configured for pressing hose are both movable hose-pressing roller assemblies, and the two movable hose-pressing roller assemblies clamp the working hose by synchronized swinging motion pulled through connecting rods.

7. The double-roller hose pressing apparatus for peristaltic pump as recited in claim 6, wherein each of the movable hose-pressing roller assemblies comprises a swing connecting rod, a roller component and an eccentric crankshaft; a middle part of the eccentric crankshaft is connected with a driving swing rod located between the two movable hose-pressing roller assemblies through a driven swing rod; and the driven swing rod and the eccentric crankshaft are driven to swing synchronously by an action of the driving swing rod, such that the roller component on the eccentric crankshaft clamps the working hose.

8. The double-roller hose pressing apparatus for peristaltic pump as recited in claim 7, wherein the roller component is arranged on the eccentric crankshaft by a roller bearing, and the eccentric crankshaft is arranged on the mounting base body by a crankshaft bearing.

9. The double-roller hose pressing apparatus for peristaltic pump as recited in claim 7, wherein each of the movable hose-pressing roller assemblies comprises a driving assembly, and the driving assembly is driven in pneumatic, electric or hydraulic mode.

10. The double-roller hose pressing apparatus for peristaltic pump as recited in claim 5, wherein the roller component is arranged on the eccentric crankshaft by a roller bearing, and the eccentric crankshaft is arranged on the mounting base body by a crankshaft bearing.

11. The double-roller hose pressing apparatus for peristaltic pump as recited in claim 6, wherein each of the movable hose-pressing roller assemblies comprises a driving assembly, and the driving assembly is driven in pneumatic, electric or hydraulic mode.

12. The double-roller hose pressing apparatus for peristaltic pump as recited in claim 5, wherein each of the movable hose-pressing roller assemblies comprises a driving assembly, and the driving assembly is driven in pneumatic, electric or hydraulic mode.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0026] FIG. 1 is a structural diagram of a hose-pressing structure of a rotary peristaltic pump of prior art;

[0027] FIG. 2 is a structural diagram of a hose-pressing structure of a linear peristaltic pump of prior art;

[0028] FIG. 3 is a schematic diagram for analyzing working states of the hose pressing of prior art;

[0029] FIG. 4 is a schematic diagram of the present utility model;

[0030] FIG. 5 is a structural diagram of embodiment 1 of the present utility model;

[0031] FIG. 6 is a structural diagram of embodiment 2 of the present utility model;

[0032] FIG. 7 is a top view of FIG. 6;

[0033] FIG. 8 is a structural diagram of embodiment 3 of the present utility model; and

[0034] FIG. 9 is a top view of FIG. 8.

REFERENCE SIGNS

[0035] 1. back plate; 2. roller; 3. working hose; 4. fixed hose-pressing roller assembly; 5. movable hose-pressing roller assembly; 50. swing connecting rod; 51. roller component; 52. roller bearing; 53. eccentric crankshaft; 54. synchronizing gear; 55. driven spiral gear; 56. driving spiral gear; 57. crankshaft bearing; 58. driven swing rod; 59. driving swing rod; 6. driving device; 7. mounting base body.

DESCRIPTION OF THE EMBODIMENTS

[0036] The present utility model will be further described in detail in combination with accompanying drawings and embodiments.

[0037] Embodiment 1. Referring to FIG. 4 and FIG. 5, a double-roller hose pressing apparatus for peristaltic pump is disclosed. Flexible-rolling rollers 2 used for pressing hose are symmetrically arranged on two sides of a working hose 3, the two rollers 2 used for pressing hose are equal in diameter, and the design of fixed back plate 1 of prior art is replaced by the roller 2 used for pressing hose arranged on one side. Referring to FIG. 5, the changes in the wall thickness and radius at the side A of the working hose 3 are completely synchronous and identical to that of the side B during the hose pressing process by the rollers 2, thus avoid relative motion between the side A and the side B, thereby significantly decreasing the inner wall wear of the working hose 3. Meanwhile, as the roller 2 on one side replaces the fixed back plate 1 of prior art, replacement of the working hose 3 is available by opening the movable roller 2 without removing the fixed back plate 1, thereby simplifying and facilitating the operation.

[0038] In the present embodiment, one of the two rollers 2 arranged in relative positions is a fixed hose-pressing roller assembly 4, and the other one of the two rollers 2 is a movable hose-pressing roller assembly 5, i.e., the roller 2 at one side is in a fixed state by means of the fixed hose-pressing roller assembly 4. The movable hose-pressing roller assembly 5 comprises one driving assembly. The driving assembly comprises a driving device 6 and a mounting base body 7. The driving device 6 drives the rollers 2 to move in parallel to make the two rollers 2 arranged in relative positions in a clamping state or a loosening state. The driving device 6 is driven in pneumatic, electrical or hydraulic mode, based on actual requirements.

[0039] Embodiment 2. Referring to FIG. 4, FIG. 6 and FIG. 7, the difference between this embodiment and embodiment 1 lies in that the rollers 2 arranged in relative positions are both movable hose-pressing roller assemblies 5, and the two movable hose-pressing roller assemblies 5 clamp the working hose 3 by means of synchronized swinging motion towards each other.

[0040] In the present embodiment, each of the movable hose-pressing roller assemblies 5 comprises a roller component 51, an eccentric crankshaft 53, a synchronizing gear 54, a driven spiral gear 55 and a driving spiral gear 56. The roller component 51 is arranged by means of a roller bearing 52. The eccentric crankshaft 53 is arranged on the mounting base body 7 by means of a crankshaft bearing 57. The roller component 51 is arranged at one end of the eccentric crankshaft 53. The driven spiral gear 55 and the synchronizing gear 54 are arranged on the eccentric crankshaft 53. The eccentric crankshaft 53 swings by coordination between the driving spiral gear 56 and the driven spiral gear 55, and the roller components 51 of the two movable hose-pressing roller assemblies 5 rotate synchronously by means of the synchronizing gear 54.

[0041] It should be appreciated that the above-described movable hose-pressing roller assemblies 5 respectively comprise a driving assembly, and the driving assembly is driven in pneumatic, electrical or hydraulic mode, based on actual requirements.

[0042] Embodiment 3. Referring to FIG. 4, FIG. 8 and FIG. 9, the difference between this embodiment and the embodiment 1 lies in that the rollers 2 arranged in relative positions are both the movable hose-pressing roller assembly 5, and the two movable hose-pressing roller assemblies 5 clamp the working hose 3 by means of synchronized swinging motion of the rollers 2 pulled through connecting rods.

[0043] In the present embodiment, each of the movable hose-pressing roller assemblies 5 comprises a swing connecting rod 50, the roller component 51 and the eccentric crankshaft 53. The roller component 51 is arranged by means of the roller bearing 52. The eccentric crankshaft 53 is arranged on the mounting base body 7 by means of the crankshaft bearing 57. The roller component 51 is arranged at one end of the eccentric crankshaft 53. A middle part of the eccentric crankshaft 53 is connected with a driving swing rod 59 located between the two sets of movable hose-pressing roller assemblies 5 through a driven swing rod 58. The driven swing rod 58 and the eccentric crankshaft 53 are driven to swing synchronously by an action of the driving swing rod 59, such that the roller component 51 on the eccentric crankshaft 53 clamps the working hose 3.

[0044] It should be appreciated that the above-described movable hose-pressing roller assemblies 5 respectively comprise a driving assembly, and the driving assembly is driven in pneumatic, electrical or hydraulic mode, based on actual requirements.

[0045] The above are only preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited to the embodiments described above. The technical solutions under the ideas of the present utility model fall into the protection scope of the present utility model. It should be pointed out that, for those ordinary skilled in the art, some improvements and modifications without departing from the principle of the present utility model shall be deemed to fall into the protection scope of the present utility model.