A rubber belt vacuum filter with full filtration

Abstract

The present invention relates to a fully filtered rubber belt vacuum filter, comprising a frame and a rubber belt rotatably arranged on the frame, a filter cloth is sleeved on the outer side of the rubber belt, a first filter assembly and a second filter assembly are arranged inside the rubber belt, a switching assembly is arranged on the surface of the filter cloth, the switching assembly comprises a switching tube and an auger arranged in the switching tube, the switching assembly is used to layer the slurry after preliminary filtration and transport the lower layer of slurry from both sides to the upper side for switching through the auger, the second filter assembly is used to perform secondary filtration on the switched slurry, a cleaning assembly for washing the filter cloth is arranged under the filter cloth, a motor for driving the rubber belt and the filter cloth to rotate is arranged on the side of the frame, so as to solve the problem that the material can only be stirred for slurry, and the uneven stirring cannot distinguish the filtered slurry from the unfiltered slurry, and the device cannot thoroughly clean the residue on the filter cloth by blowing air, which will reduce the subsequent filtration efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of filters, in particular to a fully filtering rubber belt type vacuum filter. Background Art

[0002] The rubber belt vacuum filter uses filter cloth as the filter medium, making full use of the material gravity and vacuum suction to achieve high-efficiency separation of solid and liquid. It uses an integral annular rubber as the vacuum chamber. The annular belt is driven by the motor to run continuously, and the filter cloth is laid on the belt and runs synchronously with it. The belt contacts the annular friction belt on the vacuum slide and forms a water seal.

[0003] A Chinese invention patent with application publication number CN110624304A discloses a belt-type vacuum filter, including a filter body, a scraper device, a first bevel gear and a second bevel gear. When the motor rotates, the scraper on the scraper device is driven to scrape impurities on the conveyor belt, which can effectively improve the cleanliness of the conveyor belt, reduce the residual solid impurities on the conveyor belt, and prevent the solid impurities from clogging the conveyor belt surface; a Chinese invention patent with application publication number CN109621527B discloses a rubber belt vacuum filter. The filter machine includes a support frame, a filter belt is connected to the outer surface of the active transmission wheel and the driven transmission wheel, a filter hole is arranged in the middle of the filter belt, both sides of the top of the support cross bar are fixedly connected with an automatic adjustment vacuum dehydration mechanism, the middle position of the top of the support cross bar is fixedly connected with a general controller, and the middle position of the top support plate is fixedly connected with a material shifting mechanism, so as to realize the purpose of braking and correcting the filter belt position of the filter machine, ensure uniform dehydration of materials, improve the dehydration quality and dehydration efficiency of the vacuum filter, increase the material processing volume of the filter machine in one week of operation, shorten the dehydration cycle, and improve the dehydration capacity of the device.

[0004] However, the inventors found that the device has the following problems: the material can only stir the slurry, and the uneven stirring cannot distinguish the filtered and unfiltered slurries, and the device cannot thoroughly clean the residues on the filter cloth by blowing air, which will reduce the subsequent filtration efficiency. Summary of the invention

[0005] The purpose of the present invention is to invent a fully filtered rubber belt vacuum filter in view of the shortcomings of the prior art. The invention comprises a rubber belt sleeved on a frame, a filter cloth sleeved on the outside of the rubber belt, a first filter assembly and a second filter assembly arranged in the rubber belt, a switching assembly arranged on the filter cloth, the first filter assembly and the second filter assembly respectively arranged on both sides of the switching assembly, and the slurry passing through the first filter assembly is layered through the switching assembly, the lower layer filtering is completed and transported to both sides and upward through the switching assembly, the upper layer unfiltered slurry passes through the switching assembly to the lowest layer, so as to realize the switching of the upper and lower layers, and then filtered through the second filter assembly to improve the filtering efficiency, and a cleaning assembly is arranged under the filter cloth, the cleaning assembly comprises a water spray hole and a cleaning roller, the water spray hole wets the surface of the filter cloth, and the cleaning roller washes the wetted filter cloth, so as to solve the problem that the material can only be stirred to stir the slurry, and the uneven stirring cannot distinguish the filtered and unfiltered slurries, and the device cannot thoroughly clean the residues on the filter cloth by blowing air, which will reduce the subsequent filtering efficiency.

[0006] In view of the above technical problems, the technical solution adopted by the present invention is as follows: a fully filtering rubber belt vacuum filter, comprising a frame and a rubber belt rotatably arranged on the frame, a filter cloth is sleeved on the outer side of the rubber belt, a first filter component and a second filter component are arranged inside the rubber belt, the filter cloth is used to place slurry, a switching component is arranged on the surface of the filter cloth between the first filter component and the second filter component, the switching component comprises a switching tube and an auger arranged in the switching tube, the first filter component is used for preliminary filtration of the slurry, the switching component is used for stratifying the slurry and transporting the lower layer of slurry from both sides to the top through the auger for switching, the second filter component is used for secondary filtration of the switched slurry, a cleaning component for washing the filter cloth is arranged under the filter cloth, and a motor for driving the rubber belt and the filter cloth to rotate is arranged on the side of the frame.

[0007] As a preferred embodiment, rotating seats a are provided on both sides of the frame, and rotating wheels a are rotatably provided on several of the rotating seats a, and the rubber belt is sleeved on the rotating wheel a; several rotating seats b are provided on the outer side of the rubber belt, and rotating wheels b are rotatably provided on several of the rotating seats b, and the filter cloth is sleeved on several of the rotating seats b.

[0008] As a preferred embodiment, baffle bars are provided on both sides of the filter cloth, the switching tube is fixed by a fixing block provided on the baffle bars, a switching plate is provided on the switching tube, a partition plate is provided below the switching plate, the auger rotation is provided on both sides of the partition plate and the rotation directions are opposite, a discharge pipe is provided above the switching tube, the discharge pipe is connected to the switching tube, a plurality of discharge holes are provided on the discharge pipe, the rotation directions of the auger on both sides of the partition plate are opposite, and the auger is driven to rotate by belt a while the filter cloth is conveyed.

[0009] Preferably, the first filter assembly and the second filter assembly each include a plurality of vacuum boxes arranged in a rubber belt, filter tubes are arranged on the sides of the vacuum boxes, the filter tubes are concentrated through a filtrate main pipe, the filtrate main pipe is connected to a drainage separator, and the vacuum boxes are connected to a vacuum pump through the filter tubes.

[0010] As a preferred embodiment, the cleaning assembly includes a cleaning box arranged below the filter cloth, the top of the cleaning box is in a "V" shape, a plurality of water spray holes facing the filter cloth are arranged above the cleaning box, a cleaning roller is rotatably arranged on the cleaning box, a plurality of brushes are arranged on the surface of the cleaning roller, and the cleaning roller is driven to rotate by a belt b while the filter cloth is conveyed, and the cleaning box is connected to a washing pump.

[0011] As a preference, the upper surface of the rubber belt is in contact with the filter cloth, and a plurality of filter holes are provided on the rubber belt.

[0012] As a preference, a pressing roller for pressing the filter cloth is rotatably provided on the frame.

[0013] As a preference, the discharge hole is arranged inclined toward the filter cloth.

[0014] Beneficial effects of the present invention:

[0015] 1. A switching tube is arranged on the filter cloth, a switching plate is arranged on the switching tube, a partition plate is arranged at the lower end of the switching plate, an auger is arranged to rotate in the switching tube, and the rotation directions of the auger on both sides of the partition plate are opposite. The slurry is divided into a filter layer and an unfiltered layer through the switching plate, the unfiltered layer is continuously transported through the switching plate to fit the filter cloth, the filter layer is transported to both sides through the auger, and finally sent out through a discharge pipe arranged on the upper layer of the switching tube to be spread on the unfiltered layer, and finally all filtration is completed through the second filter assembly, so that the slurry is evenly filtered and the filtration efficiency is improved.

[0016] 2. A cleaning box is arranged under the filter cloth, a plurality of water spray holes are arranged on the surface of the cleaning box, a cleaning roller is rotatably arranged on the cleaning box, a plurality of brushes are arranged on the cleaning roller, the residues adhering to the filter cloth are moistened through the water spray holes, the brushes are driven by the rotation of the cleaning roller to wash the moistened filter cake, so that the filter cloth is regenerated, and a new round of circulation is carried out in the re-filtration area.

[0017] In summary, the equipment has the advantages of uniform slurry filtration, high filtration efficiency, good cleaning effect, improved filter cloth regeneration, etc., and is particularly suitable for the field of filter machine technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of a fully filtered rubber belt vacuum filter;

[0020] Figure 2 is a cross-sectional view of a fully filtered rubber belt vacuum filter;

[0021] Figure 3 A schematic diagram of the structure of a switching assembly in a fully filtered rubber belt vacuum filter;

[0022] Figure 4 A schematic diagram of the structure of a switching assembly in a fully filtered rubber belt vacuum filter;

[0023] Figure 5 for Figure 1 A partial enlarged view of the middle A;

[0024] Figure 6 for Figure 2 A partial enlarged view of point B in the middle;

[0025] Figure 7 for Figure 2 A partial enlarged view of point C in the middle;

[0026] The attached drawings are marked as follows: 1. frame; 2. rubber belt; 3. filter cloth; 4. first filter assembly; 5. second filter assembly; 6. switching assembly; 7. switching tube; 8. auger; 9. cleaning assembly; 10. motor; 21. rotating seat a; 22. rotating wheel a22; 23. rotating seat b; 24. rotating wheel b; 31. baffle; 32. fixed block; 33. switching plate; 34. partition plate; 35. discharge pipe; 36. discharge hole; 41. vacuum box; 42. filter tube; 43. filtrate main pipe; 44. drainage separator; 51. cleaning box; 52. water spray hole; 53. cleaning roller; 54. brush; 61. filter hole; 71; pressing roller. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings.

[0028] Embodiment 1

[0029] like Figures 1 to 7As shown, a fully filtering rubber belt vacuum filter comprises a frame 1 and a rubber belt 2 rotatably arranged on the frame 1, a filter cloth 3 is sleeved on the outer side of the rubber belt 2, a first filter assembly 4 and a second filter assembly 5 are arranged inside the rubber belt 2, the filter cloth 3 is used to place slurry, a switching assembly 6 is arranged on the surface of the filter cloth 3 between the first filter assembly 4 and the second filter assembly 5, the switching assembly 6 comprises a switching tube 7 and an auger 8 arranged in the switching tube 7, the first filter assembly 4 is used for preliminary filtering of the slurry, the switching assembly 6 is used for stratifying the slurry and transporting the lower layer of slurry from both sides to the top through the auger 8 for switching, the second filter assembly 5 is used for secondary filtering of the switched slurry, a cleaning assembly 9 for washing the filter cloth 3 is arranged below the filter cloth 3, and a motor 10 for driving the rubber belt 2 and the filter cloth 3 to rotate is arranged on the side of the frame 1.

[0030] like Figure 1 As shown in FIG. 2, rotating seats a21 are arranged on both sides of the frame 1, and rotating wheels a22 are rotatably arranged on several rotating seats a21, and the rubber belt 2 is sleeved on the rotating wheels a22. The frame 1 is provided with several rotating seats b23 on the outside of the rubber belt 2, and rotating wheels b24 are rotatably arranged on several rotating seats b23, and the filter cloth 3 is sleeved on several rotating seats b23.

[0031] It is worth mentioning here that by arranging a plurality of rotating seats a21 and rotating seats b23 on the frame 1, and arranging rotating wheels a22 and quasi-wheels b24 on the rotating seats a21 and b23, the stability of the rubber belt 2 and the filter cloth 3 during rotation can be ensured.

[0032] like Figure 3 ,4, baffles 31 are provided on both sides of the filter cloth 3, the switching tube 7 is fixed by a fixing block 32 provided on the baffles 31, a switching plate 33 is provided on the switching tube 7, a partition plate 34 is provided below the switching plate 33, the auger 8 is rotatably provided on both sides of the partition plate 34 and has opposite rotation directions, a discharge pipe 35 is provided above the switching tube 7, the discharge pipe 35 is connected to the switching tube 7, a plurality of discharge holes 36 are provided on the discharge pipe 35, the rotation directions of the auger 8 on both sides of the partition plate 33 are opposite, and the filter cloth 3 is conveyed while the auger 8 is driven to rotate by the belt a.

[0033] It is worth mentioning here that by reversing the rotation direction of the auger 8 on both sides of the partition plate 33, the slurry can be transported from both sides through the auger 8 and re-laid on the filter cloth, thereby realizing the switching of the slurry.

[0034] like Figure 1As shown in 2, the first filter assembly 4 and the second filter assembly 5 both include a plurality of vacuum boxes 41 arranged in the rubber belt 3, and filter tubes 42 are arranged on the sides of the vacuum boxes 41. The filter tubes 42 are concentrated through a filtrate main pipe 43, and the filtrate main pipe 43 is connected to a drainage separator 44. The vacuum box 41 is connected to a vacuum pump through the filter tubes 42.

[0035] like Figure 7 As shown, the cleaning assembly 9 includes a cleaning box 51 arranged below the filter cloth 3, the top of the cleaning box 51 is in a "V" shape, and a plurality of water spray holes 52 facing the filter cloth 3 are arranged above the cleaning box 51. A cleaning roller 53 is rotatably arranged on the cleaning box 51, and a plurality of brushes 54 are arranged on the surface of the cleaning roller 53. The cleaning roller 53 is driven to rotate by the belt b while the filter cloth 3 is conveyed, and the cleaning box 51 is connected to a washing pump.

[0036] It is worth mentioning here that by arranging a plurality of water spray holes 52 facing the filter cloth 3 above the cleaning box 51, the residue on the filter cloth can be moistened through the water spray holes 52, making it easier for a brush to wash off the residue and maintain the regeneration of the filter cloth.

[0037] like Figure 1 As shown, the upper surface of the rubber belt 2 is in contact with the filter cloth 3 , and a plurality of filter holes 61 are provided on the rubber belt 2 .

[0038] It is worth mentioning that, by providing a plurality of filter holes 61 on the rubber belt 2 , the filtrate of the slurry can be filtered through the filter holes 61 by the vacuum box 41 .

[0039] like Figure 2 As shown, a pressing roller 71 for pressing the filter cloth 3 is rotatably provided on the frame 1 .

[0040] It is worth mentioning again that by rotating a pressing roller 71 for pressing the filter cloth 3 on the frame 1, the filter cloth 3 and the rubber belt 2 can be pressed by the pressing roller 71 to prevent them from deflecting during rotation.

[0041] like Figure 6 As shown, the discharge hole 35 is arranged obliquely toward the filter cloth 3 .

[0042] The working process is as follows:

[0043] The motor 10 is started, and the motor 10 drives the rubber belt 2 and the filter cloth 3 to rotate simultaneously, and the vacuum pump is started, and the vacuum pump drives the vacuum box 41 to generate vacuum negative pressure, and the vacuum box 41 forms a vacuum filtration area on the rubber belt 2, and the slurry is spread on the filter cloth, and the filter cloth drives the slurry to move, and when passing through the vacuum filtration area of ​​the first filter component 4, the filtrate on the slurry enters the vacuum box 41 through the filter hole 61 of the rubber belt 2 under the action of vacuum filtration, and finally is discharged through the filter tube 42 and the liquid discharge separator 44;

[0044] After the filtrate is initially filtered, a filter layer and an unfiltered layer are formed. After the switching assembly 6, the switching plate 33 separates the filter layer and the unfiltered layer. The unfiltered layer continues to move through the switching plate 33 to fit the filter cloth 3. The filter layer is transported to both sides under the drive of the auger 8, and finally discharged through the discharge hole 36 of the discharge pipe 35 and laid on the unfiltered layer. When passing through the second filter assembly 5, the filtrate is completely filtered, and finally discharged at the turning point of the filter cloth 3.

[0045] When the filter cloth 3 passes through the cleaning component 9, the washing pump is turned on. The washing pump sprays water onto the filter cloth through the water spray hole 52 to moisten the residue on the filter cloth. The cleaning roller rotates driven by the belt b, thereby driving the brush 54 to scrub the surface of the filter cloth 3. The scrubbed filter cloth is regenerated and enters a new cycle of filtration.

[0046] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "front and back", "left and right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the invention.

[0047] Of course, in this technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "one" should not be understood as a limitation on the number.

[0048] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art under the technical prompts of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A fully filtering rubber belt vacuum filter, comprising a frame (1) and a rubber belt (2) rotatably arranged on the frame (1), wherein a filter cloth (3) is sleeved on the outer side of the rubber belt (2), characterized in that: A first filter assembly (4) and a second filter assembly (5) are arranged in the rubber belt (2); the filter cloth (3) is used for placing slurry; a switching assembly (6) is arranged between the first filter assembly (4) and the second filter assembly (5) on the surface of the filter cloth (3); the switching assembly (6) comprises a switching tube (7) and an auger (8) arranged in the switching tube (7); the first filter assembly (4) is used for preliminary filtering of the slurry; the switching assembly (6) is used for stratifying the slurry and conveying the lower layer of slurry from both sides to the upper side through the auger (8) for switching; the second filter assembly (5) is used for secondary filtering of the switched slurry; a cleaning assembly (9) for washing the filter cloth is arranged below the filter cloth (3); and a motor (10) for driving the rubber belt (2) and the filter cloth (3) to rotate is arranged on the side of the frame (1).

2. A fully filtered rubber belt vacuum filter according to claim 1, characterized in that: The frame (1) is provided with rotating seats a (21) on both sides, a plurality of rotating seats a (21) are rotatably provided with rotating wheels a (22), the rubber belt (2) is sleeved on the rotating wheels a (22), the frame (1) is provided with a plurality of rotating seats b (23) on the outside of the rubber belt (2), a plurality of rotating seats b (23) are rotatably provided with rotating wheels b (24), and the filter cloth (3) is sleeved on the plurality of rotating seats b (23).

3. A fully filtered rubber belt vacuum filter according to claim 1, characterized in that: Baffle bars (31) are provided on both sides of the filter cloth (3); the switching tube (7) is fixed by a fixing block (32) provided on the baffle bars (31); a switching plate (33) is provided on the switching tube (7); a partition plate (34) is provided below the switching plate (33); the auger (8) is rotatably provided on both sides of the partition plate (34) and has opposite rotation directions; a discharge pipe (35) is provided above the switching tube (7); the discharge pipe (35) is connected to the switching tube (7); a plurality of discharge holes (36) are provided on the discharge pipe (35); the rotation directions of the auger (8) on both sides of the partition plate (33) are opposite; and the auger (8) is driven to rotate by a belt a while the filter cloth (3) is conveyed.

4. A fully filtered rubber belt vacuum filter according to claim 1, characterized in that: The first filter assembly (4) and the second filter assembly (5) both comprise a plurality of vacuum boxes (41) arranged in the rubber belt (3), the vacuum boxes (41) being provided with filter tubes (42) on the sides of the vacuum boxes (41), the filter tubes (42) being collected by a filtrate main pipe (43), the filtrate main pipe (43) being connected to a drainage separator (44), and the vacuum boxes (41) being connected to a vacuum pump via the filter tubes (42).

5. A fully filtered rubber belt vacuum filter according to claim 1, characterized in that: The cleaning assembly (9) comprises a cleaning box (51) arranged below the filter cloth (3); the top of the cleaning box (51) is in a "V" shape; a plurality of water spray holes (52) facing the filter cloth (3) are arranged above the cleaning box (51); a cleaning roller (53) is rotatably arranged on the cleaning box (51); a plurality of brushes (54) are arranged on the surface of the cleaning roller (53); the cleaning roller (53) is driven to rotate by a belt (b) while the filter cloth (3) is being transported; and the cleaning box (51) is connected to a washing pump.

6. A fully filtered rubber belt vacuum filter according to claim 1, characterized in that: The upper surface of the rubber belt (2) is in contact with the filter cloth (3), and a plurality of filter holes (61) are provided on the rubber belt (2).

7. A fully filtered rubber belt vacuum filter according to claim 1, characterized in that: A pressing roller (71) for pressing the filter cloth (3) is rotatably arranged on the frame (1).

8. A fully filtered rubber belt vacuum filter according to claim 3, characterized in that: The discharge hole (35) is arranged obliquely toward the filter cloth (3).

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