Vacuum belt dehydration device

Abstract

The utility model discloses a vacuum belt dewatering device which comprises a rack, two driving wheels are rotationally arranged on the rack, a conveying belt is arranged between the two driving wheels, a plurality of guide rollers are installed on the rack, filter cloth is installed on the guide rollers and located outside the conveying belt, the upper half portion of the filter cloth is attached to the upper side of the conveying belt, and the lower half portion of the filter cloth is attached to the lower side of the conveying belt. A feeding hopper and a compression roller are mounted on the rack, the feeding hopper is located on the left side above the filter cloth, the compression roller is located on the left side of the feeding hopper, and the filter cloth abuts against the conveying belt through the compression roller. According to the utility model, sticky materials can be diluted, so that the materials can be better distributed for dehydration.

Description

Technical Field

[0001] The utility model relates to the technical field of dehydration equipment, and more specifically, to a vacuum belt dehydration device. Background Art

[0002] Due to raw material limitations, some cement enterprises have high sulfur dioxide content in the flue gas they emit. Therefore, it is necessary to desulfurize the flue gas. Most enterprises use the limestone-gypsum method for desulfurization. After the limestone slurry is atomized by a spraying device, it fully contacts and reacts with the flue gas. After the reacted limestone-gypsum slurry is forced to oxidize, desulfurized gypsum slurry is formed. After the desulfurized gypsum slurry is dehydrated, desulfurized gypsum is obtained; the dehydration of the desulfurized gypsum slurry needs to be completed in a vacuum belt filter. The gypsum slurry is too viscous and easily forms lumps or piles on the filter cloth, resulting in uneven cloth distribution and thus affecting the dehydration effect. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies of the above-mentioned prior art and provide a vacuum belt dehydration device.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model discloses a vacuum belt dehydration device, which includes a frame. Two driving wheels are rotatably arranged on the frame. A conveyor belt is arranged between the two driving wheels. A number of guide rollers are installed on the frame. A filter cloth is installed on the guide rollers. The filter cloth is located outside the conveyor belt. The upper half of the filter cloth is attached to the upper side of the conveyor belt. A feeding hopper and a pressing roller are installed on the frame. The feeding hopper is located at the left position above the filter cloth. The pressing roller is located on the left side of the feeding hopper. The pressing roller presses the filter cloth against the conveyor belt. A first vacuum tank is installed on the frame. The first vacuum tank is located below the upper conveyor belt. A number of cloth distribution mechanisms are arranged at the right side of the feeding hopper. The cloth distribution mechanism includes a mounting frame installed on the frame. A water supply pipe is installed inside the mounting frame. A number of nozzles are arranged on two sections of the water supply pipe. A water blocking film is arranged at the right side of the water supply pipe on the mounting frame.

[0006] Further, second vacuum tanks are arranged at the front and rear sides of the cloth distribution mechanism.

[0007] Further, a first hydraulic cylinder is installed on the frame. The lower end of the piston rod of the first hydraulic cylinder is connected with a rotating frame. The pressing roller is rotatably arranged inside the rotating frame.

[0008] Further, a tensioning mechanism is installed on the frame. The filter cloth is arranged around the tensioning mechanism.

[0009] Further, the tensioning mechanism includes two mounting frames. A rotating seat is arranged inside the mounting frame. Springs are respectively connected between the upper and lower ends of the rotating seat and the inner side of the mounting frame. A tensioning roller is rotatably arranged between the two rotating seats. Two mounting grooves are formed on the inner side of the frame. A lead screw is rotatably arranged in one of the mounting grooves. A lead screw slider is arranged on the lead screw. The lead screw slider is connected to one of the mounting frames. A guide rod is arranged in the other mounting groove. A guide block is slidably arranged on the guide rod. The guide block is connected to the other mounting frame. The upper end of the lead screw is connected with a driven bevel gear. A driving shaft is rotatably arranged in the frame. One end of the driving shaft is connected with a driving bevel gear. The driving bevel gear meshes with the driven bevel gear. The other end of the driving shaft passes through the frame and is connected with a handwheel.

[0010] Further, blocks are arranged at both ends of the tensioning roller.

[0011] Further, a cleaning mechanism is arranged on the frame. The cleaning mechanism includes a servo motor and a cleaning roller. The cleaning roller is rotatably arranged on the frame. The cleaning roller is in contact with the filter cloth. The cleaning roller is coaxially connected with a driven belt pulley. The servo motor is drivingly connected with a driving belt pulley. A transmission belt is connected between the driving belt pulley and the driven belt pulley.

[0012] Further, the cleaning mechanism further includes a second hydraulic rod. A tool holder is connected to the piston rod of the second hydraulic rod. A scraping knife is installed on the tool holder.

[0013] The beneficial effect of the utility model is that water is sprayed on the material on the filter cloth through the nozzle to dilute and disperse the viscous material, making the cloth more uniform and ensuring the normal operation of material dehydration. Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of a vacuum belt dewatering device in this embodiment;

[0015] Figure 2 It is a schematic structural diagram of a cloth feeding mechanism in this embodiment;

[0016] Figure 3 It is a schematic structural diagram of a tensioning mechanism in this embodiment;

[0017] Figure 4 It is a schematic structural diagram of a cleaning mechanism in this embodiment.

[0018] Reference numerals: 1, frame; 2, drive wheel; 3, conveyor belt; 4, guide roller; 5, filter cloth; 6, pressure roller; 7, feeding hopper; 8, first hydraulic cylinder; 9, rotating frame; 10, first vacuum tank; 11, liquid suction pipe; 12, cloth feeding mechanism; 13, second vacuum tank; 14, cleaning mechanism; 15, tensioning mechanism; 16, mounting frame; 17, water supply pipe; 18, nozzle; 19, water retaining film; 20, mounting groove; 21, lead screw; 22, lead screw slider; 23, guide rod; 24, guide block; 25, mounting frame; 26, rotating seat; 27, spring; 28, tensioning roller; 29, stop block; 30, driven bevel gear; 31, drive shaft; 32, driving bevel gear; 33, hand wheel; 34, servo motor; 35, driving pulley; 36, cleaning roller; 37, driven pulley; 38, transmission belt; 39, second hydraulic rod; 40, tool holder; 41, scraper blade. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] As Figure 1 - Figure 2 shown, a vacuum belt dewatering device includes a frame 1. Two drive wheels 2 are rotatably arranged on the frame 1. The two drive wheels 2 are at the same height, and one of the drive wheels 2 is driven to rotate by an external drive mechanism such as a motor and other devices. A conveyor belt 3 is arranged between the two drive wheels 2, and the drive wheels 2 rotate to drive the conveyor belt 3 to rotate. A plurality of guide rollers 4 are installed on the frame 1, and a filter cloth 5 is installed on the guide rollers 4. The filter cloth 5 is located outside the conveyor belt 3. The upper half of the filter cloth 5 is attached to the upper side of the conveyor belt 3. The conveyor belt 3 drives the conveyor belt 3 to move through the friction force between the conveyor belt 3 and the filter cloth 5. A feeding hopper 7 and a pressure roller 6 are installed on the frame 1. The feeding hopper 7 is located at the upper left position above the filter cloth 5, and the pressure roller 6 is located on the left side of the feeding hopper 7. The frame 1 is installed with a first hydraulic cylinder 8. The lower end of the piston rod of the first hydraulic cylinder 8 is connected with a rotating frame 9. The pressure roller 6 is rotatably arranged in the rotating frame 9. The pressure roller 6 presses the filter cloth 5 against the conveyor belt 3 so that the filter cloth 5 is attached to the conveyor belt 3.

[0021] A vacuum tank 10 is installed on the frame 1. The vacuum tank 10 is located below the upper conveyor belt 3. The opening of the vacuum tank 10 faces the upper conveyor belt 3. A liquid suction pipe 11 is also installed on the frame 1. The vacuum tank 10 and the liquid suction pipe 11 are connected by a pipeline. The liquid suction pipe 11 is connected to the air-water separation tank. A number of cloth feeding mechanisms 12 are arranged at the right side position of the feeding hopper 7. The cloth feeding mechanism 12 includes a mounting frame 16 installed on the frame 1. A water supply pipe 17 is installed inside the mounting frame 16. The water supply pipe 17 is perpendicular to the moving direction of the filter cloth 5. A number of nozzles 18 are arranged on two sections of the water supply pipe 17. The nozzles 18 are inclined. The angle between the nozzles 18 and the vertical direction is 30 - 45 degrees. The material falls from the feeding hopper 7 and lands on the filter cloth 5, and is conveyed forward by the filter cloth 5. The water supply pipe 17 is connected to an external water supply device and sprays water through the nozzles 18, which impacts on the material conveyed by the filter cloth 5. The viscous material is diluted and dispersed to prevent the material from piling up and affecting the dehydration effect. The material can be more evenly distributed on the filter cloth 5, making the dehydration effect better. The air-water separation tank is started, and a negative pressure is formed in the vacuum tank 10 through the liquid suction pipe 11, so that the water in the material enters the vacuum tank 10 through the filter cloth 5 and the conveyor belt 3 under the action of the negative pressure, and then enters the air-water separation tank through the liquid suction pipe 11, thus completing the dehydration of the material.

[0022] Vacuum tanks 13 are arranged at the front and rear positions of the cloth feeding mechanism 12. The vacuum tanks 13 and the liquid suction pipe 11 are connected by a pipeline. A water blocking film 19 is arranged at the right side position of the water supply pipe 17 on the mounting frame 16. The lower end of the water blocking film 19 extends to contact the filter cloth 5. The water blocking film 19 can block the excessive water after spraying, so that this water can enter the vacuum tanks 13 from the front and rear sides respectively for collection, and prevent this water from flowing down from other positions.

[0023] As Figure 3 shown, a tensioning mechanism 15 is installed on the frame 1. The filter cloth 5 is arranged around the tensioning mechanism 15. The tensioning mechanism 15 includes two mounting frames 25. A rotating seat 26 is arranged inside the mounting frame 25. Springs 27 are respectively connected between the upper and lower ends of the rotating seat 26 and the inner side of the mounting frame 25. A tensioning roller 28 is rotatably arranged between the two rotating seats 26. Two relatively arranged mounting grooves 20 are formed on the inner side of the frame 1. A lead screw 21 is rotatably arranged in one of the mounting grooves 20. A lead screw slider 22 is arranged on the lead screw 21. The lead screw slider 22 is connected to one of the mounting frames 25. A guide rod 23 is arranged in the other mounting groove 20. A guide block 24 is slidably arranged on the guide rod 23. The guide block 24 is connected to the other mounting frame 25. The upper end of the lead screw 21 is connected to a driven bevel gear 30. A drive shaft 31 is rotatably arranged in the frame 1. One end of the drive shaft 31 is connected to a driving bevel gear 32. The driving bevel gear 32 meshes with the driven bevel gear 30. The other end of the drive shaft 31 passes through the frame 1 and is connected to a handwheel 33. The lead screw 21 and the guide rod 23 are both vertically arranged.

[0024] The driving shaft 31 is rotated by the handwheel 33, and the driving bevel gear 32 on the driving shaft 31 is rotated. The lead screw 21 is rotated through the cooperation of the driving bevel gear 32 and the driven bevel gear 30, so as to adjust the height of the mounting frame 25 connected to the lead screw slider 22, and synchronously drive the other mounting frame 25 to lift and lower, thereby adjusting the height of the tensioning roller 28, so as to tension the filter cloth 5. At the same time, the rotating seat 26 is connected to the mounting frame 25 through the spring 27, so that the rotating seat 26 has a certain ability to move, which can play a certain compensatory role when the filter cloth 5 runs with fluctuations, and there is no need to adjust frequently.

[0025] Blocks 29 are arranged at both ends of the tensioning roller 28, and the blocks 29 limit the filter cloth 5.

[0026] As Figure 4 shown, a cleaning mechanism 14 is arranged on the frame 1. The cleaning mechanism 14 includes a servo motor 34 and a cleaning roller 36. The cleaning roller 36 is rotatably arranged on the frame 1. The cleaning roller 36 is in contact with the filter cloth 5. A driven pulley 37 is coaxially connected to the cleaning roller 36. The servo motor 34 is drivingly connected with a driving pulley 35. A transmission belt 38 is connected between the driving pulley 35 and the driven pulley 37. The servo motor 34 drives the driving pulley 35 to rotate, and the driving pulley 35 drives the driven pulley 37 to rotate through the transmission belt 38. The driven pulley 37 drives the coaxially arranged cleaning roller 36 to rotate. The rotating cleaning roller 36 cleans the outer side of the filter cloth 5 to remove the residual materials on the filter cloth 5.

[0027] The cleaning mechanism 14 further includes a second hydraulic rod 39. A tool holder 40 is connected to the piston rod of the second hydraulic rod 39, and a scraper 41 is mounted on the tool holder 40. The tip of the scraper 41 is in contact with the outer side of the filter cloth 5, and the residual materials on the filter cloth 5 are scraped off by the scraper 41 during the movement of the filter cloth 5.

[0028] The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, several improvements and refinements made without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A vacuum belt dehydration device, characterized in that: The invention comprises a frame (1), two driving wheels (2) are rotatably arranged on the frame (1), a conveyor belt (3) is arranged between the two driving wheels (2), a plurality of guide rollers (4) are installed on the frame (1), a filter cloth (5) is installed on the guide roller (4), the filter cloth (5) is located outside the conveyor belt (3), the upper part of the filter cloth (5) is attached to the upper side of the conveyor belt (3), a feed hopper (7) and a pressure roller (6) are installed on the frame (1), the feed hopper (7) is located on the left side above the filter cloth (5), the pressure roller (6) is located on the left side of the feed hopper (7), and the filter cloth (5) is located on the left side of the filter cloth (5). The pressure roller (6) presses the filter cloth (5) against the conveyor belt (3); a vacuum groove (10) is installed on the frame (1); the vacuum groove (10) is located below the upper conveyor belt (3); a plurality of material distribution mechanisms (12) are arranged on the right side of the feed hopper (7); the material distribution mechanisms (12) include a mounting frame (16) mounted on the frame (1); a water supply pipe (17) is installed in the mounting frame (16); two sections of the water supply pipe (17) are provided with a plurality of nozzles (18); a water retaining film (19) is arranged on the mounting frame (16) at a position on the right side of the water supply pipe (17).

2. A vacuum belt dehydration device according to claim 1, characterized in that: Vacuum groove 2 (13) is arranged at the front and rear sides of the material distributing mechanism (12).

3. A vacuum belt dehydration device according to claim 1, characterized in that: The frame (1) is installed with a hydraulic cylinder (8), the lower end of the piston rod of the hydraulic cylinder (8) is connected to a rotating frame (9), and the pressure roller (6) is rotatably arranged in the rotating frame (9).

4. A vacuum belt dehydration device according to claim 1, characterized in that: A tensioning mechanism (15) is installed on the frame (1), and the filter cloth (5) is arranged to bypass the tensioning mechanism (15).

5. A vacuum belt dehydration device according to claim 4, characterized in that: The tensioning mechanism (15) comprises two mounting frames (25), a rotating seat (26) is arranged inside the mounting frame (25), springs (27) are respectively connected between the upper and lower ends of the rotating seat (26) and the inner side of the mounting frame (25), a tensioning roller (28) is rotatably arranged between the two rotating seats (26), two mounting grooves (20) are provided on the inner side of the frame (1), a screw rod (21) is rotatably arranged in one of the mounting grooves (20), a screw rod slider (22) is arranged on the screw rod (21), and the screw rod slider (22) is connected to one of the mounting frames (25). The other mounting groove (20) is provided with a guide rod (23), a guide block (24) is slidably provided on the guide rod (23), the guide block (24) is connected to another mounting frame (25), the upper end of the screw rod (21) is connected to a driven bevel gear (30), a drive shaft (31) is rotatably provided in the frame (1), one end of the drive shaft (31) is connected to an active bevel gear (32), the active bevel gear (32) is meshed with the driven bevel gear (30), and the other end of the drive shaft (31) passes through the frame (1) and is connected to a hand wheel (33).

6. A vacuum belt dehydration device according to claim 5, characterized in that: Stoppers (29) are provided at both ends of the tensioning roller (28).

7. The vacuum belt dehydration device according to claim 1, characterized in that: The frame (1) is provided with a cleaning mechanism (14), the cleaning mechanism (14) comprising a servo motor (34) and a cleaning roller (36), the cleaning roller (36) being rotatably arranged on the frame (1), the cleaning roller (36) being in contact with the filter cloth (5), the cleaning roller (36) being coaxially connected with a driven pulley (37), the servo motor (34) being drivingly connected with a driving pulley (35), and a transmission belt (38) being connected between the driving pulley (35) and the driven pulley (37).

8. A vacuum belt dehydration device according to claim 7, characterized in that: The cleaning mechanism (14) further comprises a second hydraulic rod (39), the piston rod of the second hydraulic rod (39) being connected to a knife seat (40), and a scraper (41) being mounted on the knife seat (40).

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