Rotating type foreign substance collection equipment

Abstract

The present disclosure relates to a rotating type foreign substance collection equipment, and according to an embodiment of the present disclosure, there is an effect in separating and collecting foreign substances such as oil from foreign substance-fluid mixtures at high speeds by the separation membrane that traps foreign substances such as oil that float in water while allowing sea water or river water to pass through and be discharged.

Claims

1. A rotating type foreign substance collection equipment, comprising: a screw body including a spiral wing part continuously formed along a central shaft; and a separation membrane coupled around an exterior of the spiral wing part to allow for selective outward penetration of a fluid other than a foreign substance to be collected in a foreign substance-fluid mixture that rises along the spiral wing part as the screw body rotates, wherein a pitch interval is a distance between two adjacent crests of the spiral wing part that continuously formed along the central shaft, wherein the spiral wing part includes a section with a smaller pitch interval, wherein the separation membrane is a porous material having a nano protrusion structure formed on a surface to have hydrophilicity, wherein the separation membrane has a contact angle with water in air of 20 or less, and a contact angle with oil in water of 140 or more, wherein the nano protrusion structure is made of a polymer material and the nano protrusion structure is formed with a diameter of 1 to 100 nanometers.

2. The rotating type foreign substance collection equipment according to claim 1, comprising: a storage part connected to the screw body to store the foreign substance included in the foreign substance-fluid mixture rising along the spiral wing part.

3. The rotating type foreign substance collection equipment according to claim 1, wherein the spiral wing part includes a plurality of protrusions on a surface to which the foreign substance-fluid mixture is attached, to improve a contact area with the foreign substance-fluid mixture.

4. The rotating type foreign substance collection equipment according to claim 1, wherein the separation membrane is in a shape of a net-type mesh which is a porous structure including mesh pores.

5. The rotating type foreign substance collection equipment according to claim 1, comprising: a driving part to supply a rotational driving force to the central shaft of the screw body.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a diagram showing a rotating type foreign substance collection equipment according to an embodiment of the present disclosure.

(2) FIG. 2 is a diagram showing a screw body of the rotating type foreign substance collection equipment of FIG. 1.

(3) FIG. 3 is a diagram showing an example of a process of manufacturing the rotating type foreign substance collection equipment of FIG. 1.

(4) FIG. 4 is a diagram showing an example of selective penetration of a separation membrane of the rotating type foreign substance collection equipment of FIG. 1.

(5) FIG. 5 is a diagram showing an example of nano protrusion structure formed on the separation membrane surface of the rotating type foreign substance collection equipment of FIG. 1.

(6) FIG. 6 is a diagram showing another example of the nano protrusion structure of FIG. 5.

(7) FIG. 7 is a diagram showing an example in which a driving part is included in the rotating type foreign substance collection equipment of FIG. 1.

(8) FIG. 8 is a diagram showing an oil collection process using the rotating type foreign substance collection equipment of FIG. 1.

(9) FIG. 9 is a diagram showing foreign substance collection percentage as a function of screw body rotation rate in the rotating type foreign substance collection equipment of FIG. 1.

(10) FIG. 10 is a diagram showing an example of a plurality of protrusions formed on the surface of a spiral wing part of the rotating type foreign substance collection equipment of FIG. 1.

DETAILED DESCRIPTION OF EMBODIMENTS

(11) Hereinafter, certain embodiments of the present disclosure will be described in detail through exemplary drawings. It should be noted that in adding reference symbols to elements of each drawing, like elements have like reference symbols if possible even though they are indicated on different drawings. Additionally, in describing the present disclosure, when certain details of relevant well-known configuration or function are determined to render the subject matter of the present disclosure vague, its detailed description is omitted herein.

(12) Furthermore, in describing the elements of the present disclosure, the terms first, second, A, B, (a), (b), and the like may be used. These terms are only used to distinguish one element from another, and the nature of the corresponding element or its turn or order is not limited by the term. It should be understood that when an element is referred to as being connected, coupled or linked to another element, it may be directly connected or linked to other element, but intervening elements may be connected, coupled or linked between each element.

(13) FIG. 1 is a diagram showing a rotating type foreign substance collection equipment according to an embodiment of the present disclosure. FIG. 2 is a diagram showing a screw body of the rotating type foreign substance collection equipment of FIG. 1. FIG. 3 is a diagram showing an example of a process of manufacturing the rotating type foreign substance collection equipment of FIG. 1. FIG. 4 is a diagram showing an example of selective penetration of a separation membrane of the rotating type foreign substance collection equipment of FIG. 1. FIG. 5 is a diagram showing an example of nano protrusion structure formed on the separation membrane surface of the rotating type foreign substance collection equipment of FIG. 1. FIG. 6 is a diagram showing another example of the nano protrusion structure of FIG. 5. FIG. 7 is a diagram showing an example in which a driving part is included in the rotating type foreign substance collection equipment of FIG. 1. FIG. 8 is a diagram showing an oil collection process using the rotating type foreign substance collection equipment of FIG. 1. FIG. 9 is a diagram showing foreign substance collection percentage as a function of screw body rotation rate in the rotating type foreign substance collection equipment of FIG. 1. FIG. 10 is a diagram showing an example of a plurality of protrusions formed on the surface of a spiral wing part of the rotating type foreign substance collection equipment of FIG. 1.

(14) As shown in these drawings, the rotating type foreign substance collection equipment 100 according to an embodiment of the present disclosure includes a screw body 105 including a spiral wing 103 continuously formed along a central shaft 101, and a separation membrane 109 coupled around the exterior of the spiral wing part 103 to allow for selective outward penetration of a fluid 3 other than foreign substance to be collected in a foreign substance-fluid mixture 107 rising along the spiral wing part 103 with the rotation of the screw body 105.

(15) The screw body 105 includes the spiral wing part 103 continuously formed along the central shaft 101.

(16) The central shaft 101 is provided, for example, in the shape of a long circular bar.

(17) The spiral wing part 103 is continuously formed along the outer peripheral surface of the central shaft 101.

(18) The outer diameter of the spiral wing part 103 may range from 10 mm to 1 m.

(19) The spiral wing part 103 may have a pitch interval of 10 mm or more in size.

(20) Additionally, the spiral wing part 103 may include a section A with smaller pitch interval.

(21) The inclusion of the section A with smaller pitch interval in the spiral wing part 103 may increase the movement path distance of the foreign substance-fluid mixture rising along the spiral wing part 103, and as a consequence, increase the number of filtering of the foreign substance-fluid mixture, during the use of the rotating type foreign substance collection equipment 100.

(22) Of course, a plurality of sections A with smaller pitch interval may be formed at an equal distance, and a plurality of sections A with smaller pitch interval may be formed at a non-equal distance.

(23) Meanwhile, as shown in FIG. 10, to improve the contact area with the foreign substance-fluid mixture 107, the spiral wing part 103 may include a plurality of protrusions formed on the surface to which the foreign substance-fluid mixture 107 is attached.

(24) As the plurality of protrusions is formed on the spiral wing part 103 as described above, the foreign substance-fluid mixture 107 rises along the spiral wing part 103 of the screw body 105 more efficiently during the operation of the rotating type foreign substance collection equipment 100.

(25) Subsequently, the separation membrane 109 is coupled around the exterior of the spiral wing part 103.

(26) The separation membrane 109 may have a contact angle with water in air of 20 or less, and a contact angle with oil in water of 140 or more.

(27) The separation membrane 109 allows for selective outward penetration of the fluid 3 other than foreign substance to be collected in the foreign substance-fluid mixture 107 rising along the spiral wing part 103 with the rotation of the screw body 105.

(28) That is, the separation membrane 109 performs a function to trap the foreign substance 6 while allowing for penetration of only the fluid 3 other than foreign substance to be collected in the foreign substance-fluid mixture 107.

(29) Here, the foreign substance 6 may be oil, hazardous & noxious substance, etc.

(30) The following description is made on the basis that water is exemplified as the fluid 3 other than foreign substance to be collected in the foreign substance-fluid mixture 107.

(31) Meanwhile, the separation membrane 109 may include a porous material surface-treated to have hydrophilicity.

(32) The separation membrane 109 is manufactured with hydrophilicity by including micrometer level pores.

(33) Additionally, the separation membrane 109 may be in the shape of a net-type mesh 12b which is a porous structure including mesh pores.

(34) Meanwhile, the size (diameter) of the mesh pores may be 1 to 500 micrometers.

(35) Here, the shape of the net-type mesh 12b may be constructed by arranging fiber strands at such a distance between the fiber strands to form macro-pores of 1 to 500 micrometers.

(36) Additionally, the separation membrane 109 may include a nano protrusion structure 12n formed on the surface.

(37) Meanwhile, the nano protrusion structure 12n may be formed with the diameter of 1 to 100 nanometers.

(38) Here, the nano protrusion structure 12n may be made of a polymer material.

(39) Additionally, the nano protrusion structure 12n may be a nano-hair, a nano-fiber, a nano-pillar, a nano-rod and a nano-wire.

(40) The formation of the nano protrusion structure 12n in the separation membrane 109 improves hydrophilicity on the surface of the separation membrane 109.

(41) Because the separation membrane 109 has wettability for the water 3 and a property to absorb the water 3, the separation membrane 109 allows the water 3 to easily pass through.

(42) Accordingly, when a mixed liquid of the foreign substance 6 such as oil and the water 3 (the foreign substance-fluid mixture 107) is allowed to pass through the separation membrane 109, the water 3 easily passes through the separation membrane 109, whereas the foreign substance 6 does not pass through the separation membrane 109 due to the repulsive force against the water 3 and is filtered and trapped by the separation membrane 109.

(43) Meanwhile, the nano protrusion structure 12n may be made, as shown in FIG. 6, by forming a plurality of grooves in the net-type mesh 12b.

(44) As the net-type mesh 12b has a superhydrophilic property by the nano protrusion structure 12n, when the water 3 and the foreign substance 6 come into contact with the net-type mesh 12b, the water 3 comes into contact with the surface of the hydrophilic porous substrate, forming a water film on the surface of the net-type mesh 12b due to strong bonding between the water 3 and the net-type mesh 12b.

(45) According, the foreign substance 6 does not pass through the pores of the net-type mesh 12b due to repulsion of the water film on the surface of the net-type mesh 12b, and eventually the foreign substance 6 may be trapped by the separation membrane 109.

(46) Meanwhile, the rotating type foreign substance collection equipment 100 according to an embodiment of the present disclosure includes a storage part 111 connected to the screw body 105 to store the foreign substance 6 included in the foreign substance-fluid mixture 107 rising along the spiral wing part 103.

(47) The storage part 111 is provided, for example, in the shape of a barrel (box) having an inner space, and a discharge guide part 113 is formed on the side surface of the storage part 111 to guide the discharge of the foreign substance 6.

(48) As the rotating type foreign substance collection equipment 100 is provided with the storage part 111, the foreign substance 6 rising along the spiral wing part 103 does not flow out and gathers in the storage part 111, and the foreign substance 6 collected in the storage part 111 may be transferred to a separate collection tank 115 again.

(49) Additionally, the rotating type foreign substance collection equipment 100 according to an embodiment of the present disclosure includes a driving part 701 to supply a rotational driving force to the central shaft 101 of the screw body 105.

(50) Here, the driving part 701 may be provided as, for example, an electric motor.

(51) As the rotating type foreign substance collection equipment 100 is provided with the driving part 701, the oil collection operation may be automatically performed, and the speed of the oil collection operation may be actively adjusted.

(52) Describing the operation process of the rotating type foreign substance collection equipment 100 according to an embodiment of the present disclosure with reference to the drawings, the rotating type foreign substance collection equipment 100 is put in the foreign substance-fluid mixture 107 to collect the foreign substance 6, such as oil, floating on the water 3.

(53) Subsequently, when the screw body 105 rotates, the foreign substance-fluid mixture 107 rises along the spiral wing part 103 from the lower part of the spiral wing part 103.

(54) In this instance, the foreign substance-fluid mixture 107 rising along the spiral wing part 103 is subjected to a centrifugal force, and is pushed to the outer periphery of the spiral wing part 103 and comes into contact with the separation membrane 109.

(55) Subsequently, water 3 in the foreign substance-fluid mixture 107 is discharged outward through the separation membrane 109, and the foreign substance 6 such as oil continues to rise along the spiral wing part 103 and moves to the topmost of the spiral wing part 103.

(56) The foreign substance 6 having moved to the topmost of the spiral wing part 103 is collected in the storage part 111 and then discharged, and thereby the foreign substance separation/collection process is completed.

(57) Meanwhile, the rotating type foreign substance collection equipment 100 according to an embodiment of the present disclosure has varying foreign substance (oil) collection percentages per minute depending on the rotation speed of the screw body 105, and a relationship between the rotation speed (RPM) of the screw body 105 and the foreign substance collection percentage is as shown in FIG. 9.

(58) That is, when the rotation speed of the screw body 105 is 30, the collection percentage is 60%, when the rotation speed is 60, the collection percentage is 80%, and when the rotation speed is 120, the collection percentage exceeds 80%.

(59) As described above, according to an embodiment of the present disclosure, there is an effect in separating and collecting foreign substances such as oil from the foreign substance-fluid mixture at high speeds by the separation membrane that traps foreign substances such as oil that float in water while allowing sea water or river water to pass through and be discharged.

(60) Although the foregoing statements describe that all the elements constituting the embodiment of the present disclosure are combined into one or work in combination, the present disclosure is not necessarily limited to the disclosed embodiment. That is, the elements may be selectively combined into at least one within the intended scope of the present disclosure.

(61) It should be understood, unless otherwise stated to the contrary, the terms including, comprising or having as used herein specify the presence of mentioned element, but do not exclude the presence or addition of one or more other elements. Unless otherwise defined herein, all terms used herein including technical or scientific terms have the same meaning as commonly understood by those having ordinary skill in the technical field pertaining to the present disclosure. The commonly used terms such as those defined in dictionaries should be interpreted as being consistent with the meaning in the context of the relevant art, and unless explicitly defined herein, they are not interpreted in ideal or excessively formal sense.

(62) The foregoing description is provided to describe the technical spirit of the present disclosure by way of example only, and it is obvious to those having ordinary skill in the technical field pertaining to the present disclosure that various changes and modifications may be made thereto without departing from the essential features of the present disclosure. Therefore, the embodiments disclosed herein serve to describe the technical spirit of the present disclosure, but not intended to limit the technical spirit of the present disclosure, and the scope of technical spirit of the present disclosure is not limited by these embodiments. The scope of protection of the present disclosure should be interpreted by the appended claims, and the full technical spirit within its equivalent scope should be construed as falling in the scope of protection of the present disclosure.

DETAILED DESCRIPTION OF MAIN ELEMENTS

(63) 3: Water 6: Foreign substance 12b: Net-type mesh 12n: Nano protrusion structure 100: Rotating type foreign substance collection equipment 101: Central shaft 103: Spiral wing part 105: Screw body 107: Foreign substance-fluid mixture 109: Separation membrane 111: Storage part 113: Discharge guide part 115: Collection tank 701: Driving part