Belt type vacuum filter capable of automatically adjusting blanking speed

Abstract

The invention relates to a belt type vacuum filter capable of automatically adjusting blanking speed, which comprises a main body, a rubber belt sleeved on the main body and filter cloth sleeved on the outer side of the rubber belt, a feeding assembly used for paving slurry on the filter cloth is arranged on the main body, and the feeding assembly comprises a feeding pipeline and a blanking hopper arranged below the feeding pipeline. A baffle is arranged on the feeding pipeline in a sliding mode, a tensioning roller is arranged below the rubber belt in a sliding mode, the tensioning roller descends in the process that the slurry is poured into the feeding assembly and drives the baffle to slide to block the feeding pipeline, and a filtering assembly for filtering the slurry is arranged on the side face of the feeding assembly. The side surface of the main body is provided with a scraper for discharging the slurry on the filter cloth, and a cleaning assembly for cleaning the filter cloth is arranged below the scraper, so that the problems that the discharging speed is fixed, and the slurry density or thickness is too high, so that thorough filtration cannot be ensured during filtration, and the quality of finished products is influenced due to non-uniform filtration are solved.

Description

Technical Field

[0001] The invention relates to the technical field of filters, in particular to a belt-type vacuum filter with automatically adjustable feeding speed. Background Art

[0002] The belt vacuum filter is connected to the vacuum system to form a vacuum filtration area on the filter cloth. The filtrate passes through the vacuum filtration area and enters the vacuum chamber through the pin holes on the belt. The solid particles are trapped on the filter cloth to form a filter cake, thereby achieving solid-liquid separation. The overall structure adopts a modular foldable frame structure to ensure the installation, maintenance and maintenance of the ring belt.

[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 machine comprises 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, ensuring uniform dehydration of materials, improving the dehydration quality and dehydration efficiency of the vacuum filter, increasing the material processing amount of the filter machine in one week of operation, shortening the dehydration cycle, and improving the dehydration capacity of the device.

[0004] However, the inventors found that the device has the following problems: when the feeding speed is fixed and the slurry density or thickness is too high, it is impossible to ensure thorough filtration, which will lead to uneven filtration and affect the quality of the finished product. Summary of the invention

[0005] The purpose of the present invention is to address the deficiencies in the prior art and to invent a belt vacuum filter with automatically adjustable feeding speed, comprising a main body, a rubber belt and a filter cloth sleeved on the main body, wherein a feed pipe and a feed hopper are arranged on the filter cloth, and the feed hopper evenly spreads the slurry dropped from the feed pipe on the filter cloth, a tensioning roller is slidably arranged under the filter cloth, and a baffle is slidably arranged on the feed pipe. The slurry drives the tensioning roller to descend by its own gravity, thereby driving the baffle to block the feed pipe, thereby changing the feeding speed, thus solving the problem that when the feeding speed is fixed and the slurry density or thickness is too high, the filtration cannot be ensured to be thorough during filtration, which will lead to uneven filtration and affect the quality of the finished product.

[0006] In view of the above technical problems, the technical solution adopted by the present invention is as follows: a belt vacuum filter with automatically adjustable feeding speed, comprising a main body, a rubber belt sleeved on the main body, and a filter cloth sleeved on the outside of the rubber belt, the main body is provided with a feeding assembly for spreading slurry on the filter cloth, the feeding assembly comprises a feeding pipe and a feeding hopper arranged below the feeding pipe, a baffle is slidably arranged on the feeding pipe, a tensioning roller is slidably arranged below the rubber belt, the tensioning roller descends during the process of pouring slurry into the feeding assembly and drives the baffle to slide and block the feeding pipe, a filtering assembly for filtering the slurry is arranged on the side of the feeding assembly, a scraper for discharging slurry on the filter cloth is arranged on the side of the main body, and a cleaning assembly for cleaning the filter cloth is arranged below the scraper.

[0007] Preferably, the feed pipe is provided with a feed port at the upper end and two discharge ports at the lower end, the lower hopper is correspondingly arranged below the discharge ports, the baffle is slidably arranged below the discharge ports, and the baffle and the discharge ports are both arranged in a circular shape.

[0008] As a preferred embodiment, the main body is provided with a plurality of rotating seats a and rotating seats b, a rotating rod a is rotatably provided on the rotating seat a, the rubber belt is sleeved on the rotating rod a, a rotating rod b is rotatably provided on the rotating seat b, the filter cloth is sleeved on the rotating rod, and a pressing roller for pressing the filter cloth is also rotatably provided on the main body.

[0009] As a preferred embodiment, baffles are provided on both sides of the filter cloth, support plates are provided on the baffles, sliding rods are provided on both sides of the baffles, the sliding rods are slidably provided on the support plates, a support rod is provided on the main body, a slide groove is provided on the support rod, the tensioning roller is slidably provided in the slide groove, and a belt is sleeved between the tensioning roller and the sliding rod.

[0010] As a preferred embodiment, the filter assembly includes a plurality of vacuum boxes arranged in the main body, the vacuum boxes are fitted with the inner end surface of the rubber belt, the vacuum boxes are provided with pipes, a drainage separator is provided on the side of the main body, a filtrate main pipe is provided on the drainage separator, the filtrate main pipe is connected to the pipe, and the pipe is connected to the vacuum pump.

[0011] Preferably, the cleaning assembly comprises cleaning plates arranged on both sides of the filter cloth, the cleaning plates are provided with a plurality of water spray holes, the cleaning plates are connected to a washing pump, and the cleaning plates are arranged to be parallel to the filter cloth.

[0012] As a preference, the scraper is arranged so that the blade is in contact with the surface of the filter cloth.

[0013] As a preferred embodiment, a plurality of through holes are formed on the surface of the rubber belt.

[0014] As a preference, a spring is provided between the tensioning roller and the slide groove.

[0015] As a preference, the lower hopper is configured in a fan shape from small to large.

[0016] Beneficial effects of the present invention:

[0017] 1. A feed pipe is arranged above the filter cloth, and a lower hopper is arranged below the feed pipe. The slurry falls into the lower hopper through the feed pipe. By arranging the lower hopper into a fan shape, the slurry can be evenly sprinkled on the filter cloth, making the slurry filtration more uniform.

[0018] 2. A baffle is slidably arranged on the feed pipe, and the baffle is slidably arranged on the support plate through a sliding rod. A support rod is arranged on the main body, and a tensioning roller is slidably arranged on the support rod. A belt is sleeved between the tensioning roller and the baffle. The tensioning roller descends under the drive of the slurry weight and drives the support rod to slide through the belt, thereby driving the baffle to slide and reduce the feeding speed, which can prevent excessive slurry from causing incomplete subsequent filtration.

[0019] 3. By arranging cleaning plates on both sides of the filter cloth, a number of water spray holes are arranged on the cleaning plates, and the cleaning plates are arranged parallel to the filter cloth, the regeneration of the filter cloth is ensured, making the subsequent filtration cycle more stable.

[0020] In summary, the equipment has the advantages of uniform filtration, strong filter cloth regeneration, more stable filtration, etc., and is particularly suitable for the field of filter machine technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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.

[0022] Figure 1 It is a structural schematic diagram of a belt vacuum filter with automatic adjustment of feeding speed;

[0023] Figure 2 It is a front cross-sectional view of a belt vacuum filter with automatic adjustment of feeding speed;

[0024] Figure 3 It is a structural schematic diagram of a feeding component in a belt vacuum filter with automatic adjustment of feeding speed;

[0025] Figure 4 The present invention is a cross-sectional view of a feeding assembly in a belt vacuum filter with automatic adjustment of feeding speed;

[0026] Figure 5 for Figure 2 A partial enlarged view of the middle A;

[0027] Figure 6 for Figure 2 A partial enlarged view of point B in the middle;

[0028] Figure 7 for Figure 2 A partial enlarged view of point C in the middle;

[0029] Figure 8 It is a working state diagram of a belt vacuum filter with automatic adjustment of feeding speed;

[0030] Fig. 9 It is a working state diagram of a belt vacuum filter with automatic adjustment of feeding speed;

[0031] The attached drawings are marked as follows: 1. Main body; 2. Rubber belt; 3. Filter cloth; 4. Feeding assembly; 5. Feeding pipe; 6. Lower hopper; 7. Baffle; 8. Tensioning roller; 9. Filter assembly; 10. Scraper; 11. Cleaning assembly; 21. Feed inlet; 22. Discharge outlet; 31. Rotating seat a; 32. Rotating seat b; 33. Rotating rod a; 34. Rotating rod b; 35. Pressing roller; 41. Baffle bar; 42. Support plate; 43. Sliding rod; 44. Support rod; 45. Slide; 46. Belt; 51. Vacuum box; 52. Guanao; 53. Drain separator; 54. Filtrate main pipe; 61. Cleaning plate; 62. Water spray hole; 81. Through hole; 91. Spring. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings.

[0033] Embodiment 1

[0034] like Figures 1 to 9 As shown, a belt vacuum filter with automatic adjustment of feeding speed comprises a main body 1, a rubber belt 2 sleeved on the main body 1, and a filter cloth 3 sleeved on the outside of the rubber belt 2, the main body 1 is provided with a feeding component 4 for spreading slurry on the filter cloth 3, the feeding component 4 comprises a feeding pipe 5 and a feeding hopper 6 arranged below the feeding pipe 5, a baffle 7 is slidably arranged on the feeding pipe 5, a tensioning roller 8 is slidably arranged below the rubber belt 2, the tensioning roller 8 descends during the process of pouring slurry into the feeding component 4 and drives the baffle 7 to slide and block the feeding pipe 5, a filtering component 9 for filtering the slurry is arranged on the side of the feeding component 4, a scraper 10 for discharging slurry on the filter cloth 3 is arranged on the side of the main body 1, and a cleaning component 11 for cleaning the filter cloth is arranged below the scraper 10.

[0035] like Figure 3As shown, the feed pipe 5 is provided with a feed port 21 at the upper end and two discharge ports 22 at the lower end, the lower hopper 6 is correspondingly arranged below the discharge port 22, the baffle 7 is slidably arranged below the discharge port 22, and the baffle 7 and the discharge port 22 are both arranged in a circular shape.

[0036] It is worth mentioning here that by sliding the baffle 7 below the discharge port 22, the discharge speed of the discharge port 22 can be reduced by moving the baffle 7, thereby reducing the slurry transported on the filter cloth 2 and preventing incomplete subsequent filtration.

[0037] like Figure 1 As shown in ,2,7, the main body 1 is provided with a plurality of rotating seats a31 and rotating seats b32, a rotating rod a33 is rotatably provided on the rotating seat a31, the rubber belt 2 is sleeved on the rotating rod a33, a rotating rod b34 is rotatably provided on the rotating seat b32, the filter cloth 3 is sleeved on the rotating rod 34, and a pressing roller 35 for pressing the filter cloth 3 is also rotatably provided on the main body 1.

[0038] It is worth mentioning that a pressing roller 8 for pressing the filter cloth 3 is also rotatably provided on the main body, and the filter cloth 3 can be pressed by the pressing roller 8 to prevent the filter cloth 3 from deflecting during the conveying process.

[0039] like Figure 3 As shown in 4 and 5, baffle bars 41 are provided on both sides of the filter cloth 3, support plates 42 are provided on the baffle bars 41, sliding rods 43 are provided on both sides of the baffle plate 7, and the sliding rods 43 are slidably provided on the support plates 42, a support rod 44 is provided on the main body 1, and a slide groove 45 is provided on the support rod 44, the tensioning roller 8 is slidably provided in the slide groove 45, and a belt 46 is sleeved between the tensioning roller 8 and the sliding rod 43.

[0040] It is worth mentioning here that by sleeved with a belt 46 between the tensioning roller 8 and the sliding rod 43, the tensioning roller 8 can be made to descend under the drive of the gravity of the slurry while the sliding rod 43 is driven to move by the belt 46, thereby driving the baffle 7 to move to block the discharge port 22, and the unloading speed can be automatically adjusted.

[0041] like Figure 1 , 2, the filter assembly 9 includes a plurality of vacuum boxes 51 arranged in the main body 1, the vacuum boxes 51 are fitted with the inner end surface of the rubber belt 2, a pipe 52 is arranged on the vacuum box 51, a drainage separator 53 is arranged on the side of the main body 1, a filtrate main pipe 54 is arranged on the drainage separator 53, the filtrate main pipe 54 is connected to the pipe 52, and the pipe 52 is connected to the vacuum pump.

[0042] like Figure 6As shown, the cleaning assembly 11 includes a cleaning plate 61 arranged on both sides of the filter cloth 3, a plurality of water spray holes 62 are arranged on the cleaning plate 61, the cleaning plate 61 is connected to a washing pump, and the cleaning plate 61 is arranged to be parallel to the filter cloth 3.

[0043] like Figure 7 As shown, the scraper 10 is arranged so that the blade edge is in contact with the surface of the filter cloth 3 .

[0044] It is worth mentioning that by setting the scraper 10 so that the blade is in contact with the surface of the filter cloth 3 , the scraper 10 can scrape more thoroughly and reduce the residue on the surface of the filter cloth 3 .

[0045] like Figure 5 As shown, a plurality of through holes 81 are formed on the surface of the rubber belt 2 .

[0046] It is worth mentioning that, by opening a plurality of through holes 81 on the surface of the rubber belt 2 , the filtrate of the slurry can be filtered through the through holes 81 .

[0047] like Figure 3 As shown, a spring 91 is provided between the tensioning roller 8 and the sliding groove 45 .

[0048] like Figure 4 As shown, the lower hopper 6 is arranged in a fan shape from small to large.

[0049] It is worth mentioning that by setting the lower hopper 6 to be fan-shaped from small to large, the slurry entering the lower hopper 6 can be evenly spread on the filter cloth 3 from both sides through the fan-shaped setting.

[0050] The working process is as follows:

[0051] The motor is started, and the motor drives the rubber belt 2 and the filter cloth 3 to move synchronously. The worker injects the slurry into the feed port 21 of the feed pipe 5, and then the slurry is discharged from the discharge port 22 and spread on the filter cloth 3 through the lower hopper 6. The slurry falling on the filter cloth 3 will drive the filter cloth 3 to move downward under the action of its own gravity, thereby driving the tensioning roller 8 under the filter cloth 3 to descend. When the tensioning roller 8 descends, it drives the baffle 7 to move through the belt 46, thereby reducing the discharge speed of the discharge port 22;

[0052] The slurry continues to move driven by the filter cloth 3, and the vacuum box 51 forms a vacuum filtration area on the filter cloth under the action of the vacuum pump. When the slurry passes through the vacuum filtration area, the filtrate on the slurry passes through the through holes of the rubber belt 3 and enters the vacuum box 51. The solid particles are trapped on the filter cloth to form a filter cake. The filtrate entering the vacuum chamber 51 is discharged through the drainage separator. The filter cake continues to move with the filter cloth and is scraped off by the scraper 10. When the filter cloth moves to the cleaning component 11, the cleaning plate 61 is connected to the washing pump to spray water from the water spray hole 62 to clean the filter cloth 3, so that the filter cloth is regenerated and a new round of filtration cycle begins.

[0053] 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.

[0054] 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.

[0055] 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 belt vacuum filter with automatic material feeding speed adjustment, comprising a main body (1), a rubber belt (2) sleeved on the main body (1), and a filter cloth (3) sleeved on the outside of the rubber belt (2), characterized in that: The main body (1) is provided with a feeding assembly (4) for spreading the slurry on the filter cloth (3), the feeding assembly (4) comprising a feeding pipe (5) and a lower hopper (6) arranged below the feeding pipe (5), a baffle (7) is slidably arranged on the feeding pipe (5), a tensioning roller (8) is slidably arranged below the rubber belt (2), the tensioning roller (8) descends during the process of pouring the slurry into the feeding assembly (4) and drives the baffle (7) to slide and block the feeding pipe (5), a filtering assembly (9) for filtering the slurry is arranged on the side of the feeding assembly (4), a scraper (10) for removing the slurry from the filter cloth (3) is arranged on the side of the main body (1), and a cleaning assembly (11) for cleaning the filter cloth is arranged below the scraper (10).

2. A belt vacuum filter with automatic feeding speed adjustment according to claim 1, characterized in that: The feed pipe (5) is provided with a feed port (21) at the upper end and two discharge ports (22) at the lower end; the lower hopper (6) is correspondingly arranged below the discharge ports (22); the baffle (7) is slidably arranged below the discharge ports (22); and the baffle (7) and the discharge ports (22) are both arranged in a circular shape.

3. The belt vacuum filter with automatic feeding speed adjustment according to claim 1, characterized in that: The main body (1) is provided with a plurality of rotating seats a (31) and rotating seats b (32); a rotating rod a (33) is rotatably provided on the rotating seat a (31); the rubber belt (2) is sleeved on the rotating rod a (33); a rotating rod b (34) is rotatably provided on the rotating seat b (32); the filter cloth (3) is sleeved on the rotating rod (34); and a pressing roller (35) for pressing the filter cloth (3) is also rotatably provided on the main body (1).

4. The belt vacuum filter with automatic feeding speed adjustment according to claim 1, characterized in that: Baffles (41) are provided on both sides of the filter cloth (3), support plates (42) are provided on the baffles (41), sliding rods (43) are provided on both sides of the baffle (7), the sliding rods (43) are slidably provided on the support plates (42), a support rod (44) is provided on the main body (1), a slide groove (45) is provided on the support rod (44), the tensioning roller (8) is slidably provided in the slide groove (45), and a belt (46) is sleeved between the tensioning roller (8) and the slide rod (43).

5. The belt vacuum filter with automatic feeding speed adjustment according to claim 1, characterized in that: The filter assembly (9) comprises a plurality of vacuum boxes (51) arranged in a main body (1), the vacuum boxes (51) being in contact with the inner end surface of the rubber belt (2), a pipeline (52) being arranged on the vacuum box (51), a drainage separator (53) being arranged on the side of the main body (1), a filtrate main pipe (54) being arranged on the drainage separator (53), the filtrate main pipe (54) being connected to the pipeline (52), and the pipeline (52) being connected to a vacuum pump.

6. The belt vacuum filter with automatic feeding speed adjustment according to claim 1, characterized in that: The cleaning assembly (11) comprises a cleaning plate (61) arranged on both sides of the filter cloth (3), a plurality of water spray holes (62) are arranged on the cleaning plate (61), the cleaning plate (61) is connected to a washing pump, and the cleaning plate (61) is arranged to be parallel to the filter cloth (3).

7. The belt vacuum filter with automatic feeding speed adjustment according to claim 1, characterized in that: The scraper (10) is arranged so that the blade edge fits the surface of the filter cloth (3).

8. The belt vacuum filter with automatic feeding speed adjustment according to claim 1, characterized in that: A plurality of through holes (81) are provided on the surface of the rubber belt (2).

9. The belt vacuum filter with automatic feeding speed adjustment according to claim 4, characterized in that: A spring (91) is provided between the tensioning roller (8) and the slide groove (45).

10. The belt vacuum filter with automatic feeding speed adjustment according to claim 4, characterized in that: The lower hopper (6) is configured in a fan-shaped shape from small to large.

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