Vacuum belt filter for molecular sieve slurry

Abstract

The utility model discloses a vacuum belt filter for molecular sieve slurry, which comprises a frame and a feeding device, and a rubber belt and filter cloth laid on the rubber belt are mounted on the frame. The feeding device comprises a feeding pipe transversely arranged above the filter cloth, a feeding support used for fixing the feeding pipe to the feeding frame and a distributing device matched with a discharging port of the feeding pipe, and a feeding port used for inputting slurry is formed in the top of the feeding pipe. The vacuum system comprises a vacuum box used for making sliding contact with the rubber belt and a lifting device used for controlling the vacuum box to move up and down. The lifting device comprises a shear fork type lifting mechanism installed on the rack and a driving air cylinder used for driving the shear fork type lifting mechanism to ascend and descend. According to the utility model, the vacuum box can be lifted through the lifting mechanism, the maintenance is convenient, the maintenance labor intensity is reduced, slurry can be uniformly distributed on the filter belt through the distributor, meanwhile, splashing caused by overhigh feeding speed is prevented, and the equipment is always kept clean and tidy.

Description

Technical Field

[0001] The utility model relates to a vacuum belt filter for molecular sieve slurry, belonging to the technical field of centrifugal equipment. Background Art

[0002] The vacuum belt filter is a high-efficiency, continuous and highly automated filtering equipment. It uses filter cloth with freely selectable aperture as the filtering medium. After the material is evenly distributed on the surface of the filter cloth, solid-liquid separation is achieved under the vacuum suction, and the filter cake is washed to form a filter cake layer. The filter cake moves continuously with the filter cloth at a certain speed (adjustable speed), and the water content of the filter cake continues to decrease. Finally, it is unloaded through the unloading area. When the existing vacuum belt filter is overhauled on the vacuum box, it is necessary to stop the machine and manually climb up the frame to overhaul the vacuum box, which has high labor intensity. Moreover, when unloading filter cakes of different hardness, it is only unloaded by a simple scraper, which makes the unloading effect of the filter cake with smaller hardness poor, resulting in unsatisfactory subsequent filter cloth cleaning effect. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a vacuum belt filter for molecular sieve slurry, which can facilitate the maintenance of the vacuum system and has a good unloading effect.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0005] A vacuum belt filter for molecular sieve slurry, comprising a frame, a driving device and a vacuum system, characterized in that it also includes a feeding device, wherein a rubber belt and a filter cloth laid on the rubber belt are installed on the frame; the feeding device comprises a feeding pipe arranged transversely above the filter cloth, a feeding bracket for fixing the feeding pipe on the feeding bracket, a distributor matched with a discharge port of the feeding pipe and a distribution bracket for fixing the distributor above the filter cloth, and a feeding port for inputting slurry is provided on the top of the feeding pipe.

[0006] The vacuum system includes a vacuum box for sliding contact with the rubber belt and a lifting device for controlling the vacuum box to move up and down. The lifting device includes a scissor-type lifting mechanism installed on a frame and a driving cylinder for driving the scissor-type lifting mechanism to move up and down.

[0007] The distributor includes a plurality of discharge chutes arranged in parallel, the discharge chutes are arranged to be inclined downward, and the discharge chutes are arc-shaped, that is, the height of the upper end of the discharge chute is greater than the height of the lower end of the discharge chute, and the width of the upper end of the discharge chute is smaller than the width of the lower end of the discharge chute; the upper end of the discharge chute cooperates with the discharge port of the feed pipe.

[0008] As a further improvement of the utility model, the vacuum belt filter for molecular sieve slurry also includes a unloading device, which includes a unloading frame arranged at the right end of the frame, a collecting bin installed on the unloading frame, and a scraper and a roller brush installed on the collecting bin. The top of the collecting bin is open, and the opening width is used to match the width of the filter cloth, and is used to collect the filter cake after solid-liquid separation on the filter cloth; the scraper is arranged horizontally, and the blade of the scraper is in contact with the filter cloth. The roller brush and the scraper are both installed on the collecting bin, and the roller brush is located below the scraper. The roller brush is used to clean the surface of the filter cloth after collection by the scraper.

[0009] As a further improvement of the utility model, the vacuum belt filter for molecular sieve slurry also includes a cleaning device for cleaning the filter cloth after solid-liquid separation, the cleaning device includes a first cleaning component arranged above the filter cloth and a second cleaning component arranged below the filter cloth, the first component and the second component are arranged opposite to each other.

[0010] The first cleaning component includes a first cleaning pipe and a plurality of first nozzles detachably mounted on the first cleaning pipe, wherein the water outlet of the first nozzle is downwardly arranged toward the upper surface of the filter cloth; the second cleaning component includes a second cleaning pipe, a cleaning brush and a plurality of second nozzles detachably mounted on the second cleaning pipe, wherein the cleaning brush is mounted on the right side of the second cleaning pipe through a connecting bracket, and the cleaning brush is located on the left side of the first cleaning pipe, and the cleaning brush is arranged along the width of the filter cloth; the second nozzle is arranged at an angle, and the water outlet of the second nozzle is toward the direction of the cleaning brush and cooperates with the cleaning brush.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The vacuum box of the utility model can be lifted and lowered by the lifting mechanism, which is convenient for maintenance and reduces the labor intensity of maintenance. The slurry can be evenly distributed on the filter belt through the distributor, while preventing splashing due to excessive feeding speed and keeping the equipment clean and tidy at all times;

[0013] 2. The unloading device in the utility model can perform preliminary unloading of the filter cake through a scraper, and then perform secondary unloading through a roller brush, which has a good unloading effect and reduces the workload of subsequent cleaning of the filter cloth. The filter cake after the two unloadings is collected by a collecting bin and then transported to the filter cake transport device;

[0014] 3. The cleaning device of the utility model adopts water jet to clean the filter cloth. The upper and lower surfaces of the filter cloth are cleaned by relatively arranged cleaning components, and the second cleaning component can cooperate with a brush to perform secondary cleaning on the filter cloth, thereby improving the cleaning efficiency of the filter cloth and fully ensuring the cleaning effect. Moreover, a detachable nozzle is provided, which is not easy to be blocked and is convenient to disassemble and clean, thereby improving the working efficiency and maintenance efficiency of the cleaning device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the left half of an embodiment of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the right half of the embodiment of the utility model;

[0017] Figure 3 It is a schematic diagram of the mechanism of the vacuum system in the embodiment of the utility model;

[0018] Figure 4 It is a schematic diagram of the structure of the left half of the embodiment of the utility model in a top view;

[0019] Figure 5 It is a schematic diagram of the structure of half of the embodiment of the utility model from a top view angle;

[0020] Figure 6 It is a structural schematic diagram of the unloading device in the embodiment of the utility model. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention are described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] like Figures 1 to 5 As shown, the present invention provides a vacuum belt filter for molecular sieve slurry, comprising a frame 1, a driving device, a vacuum system, a feeding device 4, a cleaning device 8 and a discharging device 7. A rubber belt and a filter cloth 6 laid on the rubber belt are installed on the frame 1. The feeding device 4 comprises a feeding pipe 42 arranged transversely above the filter cloth 6, a feeding bracket for fixing the feeding pipe 42 on the feeding bracket, a distributor matched with the discharge port of the feeding pipe 42, and a distribution bracket for fixing the distributor above the filter cloth 6. The top of the feeding pipe 42 is provided with a feeding port for inputting slurry. The height of the discharge port of the distributor is less than the height of the discharge port of the feeding pipe 42.

[0023] Furthermore, the distributor includes a plurality of feed chutes 41 arranged in parallel, and the feed chutes 41 are arranged in an arc shape and tilted downward in the longitudinal direction, that is, the height of the upper end of the feed chutes 41 is greater than the height of the lower end of the feed chutes 41, and the width of the upper end of the feed chutes 41 is less than the width of the lower end of the feed chutes 41, which is a design of being narrow at the top and wide at the bottom. The distributor uses a plurality of feed chutes 41 to evenly distribute the slurry on the filter belt, while preventing splashing due to excessive feeding speed, and always keeping the equipment clean and tidy.

[0024] The driving device includes an active roller 5 provided at the right end of the frame 1, a driven roller 2 provided at the left end of the frame 1, and a driving motor 11 for driving the active roller 5 to rotate. The rubber belt is sleeved between the active roller 5 and the driven roller 2, the driving motor 11 drives the active roller 5 to rotate, the rubber belt between the active roller 5 and the driven roller 2 is tensioned by a tensioning mechanism, and the active roller 5 drives the driven roller 2 to rotate through the rubber belt to realize the rotation of the rubber belt.

[0025] Specifically, in this embodiment, the driving roller and the driven roller 2 adopt the plastic alloy one-time molding multiple sealing technology, so that the rubber belt and the roller produce rolling friction, reduce the resistance of the rubber belt, and extend the life of the rubber belt.

[0026] Furthermore, if Figure 2 and Figure 3 As shown, the vacuum system includes a vacuum box 10, a vacuum slide, a friction belt and a lifting device 9. The rubber belt contacts the vacuum slide and the friction belt to form a water seal. The rubber belt is provided with a liquid collecting groove along the running direction. The liquid collecting groove is evenly provided with a plurality of liquid outlet holes. The vacuum slide is provided with a center hole matching the liquid outlet hole. The vacuum box 10 is in sliding contact with the rubber belt through the vacuum slide, and the collected filtrate is collected through the center hole of the vacuum slide and the liquid outlet hole of the liquid collecting groove. The lifting device 9 is used to control the up and down movement of the vacuum box 10. Specifically, the lifting device 9 in this embodiment is a scissor-type lifting mechanism installed on the frame 1 and a driving cylinder for driving the scissor-type lifting mechanism to lift. The setting of the lifting device 9 can realize the free lifting and lowering of the vacuum box 10, which is convenient for maintenance and reduces the labor intensity of maintenance.

[0027] Specifically, the filtrate flows down from the outlet hole of the rubber belt to the center hole of the vacuum slide. Due to the seal of the friction belt at both ends, the filtrate flows into the vacuum box 10 through each center hole. During the filtration, lubricating water is passed into the friction belt to reduce the wear of the friction belt, thereby extending the life of the friction belt. The material of the vacuum slide is ultra-high molecular polyethylene, and the material of the friction belt is rubber plus EP200 skeleton. The liquid collection groove of the rubber belt in this embodiment is formed by flat plate slotting to ensure that the unevenness of the rubber belt caused by multiple vulcanization and the deformation of the reinforcing cloth core are not caused. It can also determine the groove width and groove depth according to different flow rates to meet different materials and production requirements.

[0028] Furthermore, the left end of the frame 1 further includes a cloth pressing roller 3 arranged on the left side of the feeding device 4, and the cloth pressing roller 3 is used to press the filter cloth 6.

[0029] Furthermore, if Figure 6As shown, the unloading device 7 includes a unloading frame arranged at the right end of the frame 1, a collecting bin 72 installed on the unloading frame, and a scraper 71 and a roller brush 73 installed on the collecting bin 72. The collecting bin 72 is open at the top, and the opening width is used to match the width of the filter cloth 6, and is used to collect the filter cake after solid-liquid separation on the filter cloth 6. The scraper 71 is arranged horizontally, and the blade of the scraper 71 is in contact with the filter cloth 6. The filter cake conveyed by the filter cloth 6 is scraped off from the filter cloth 6 by the scraper 71, that is, the unloading function is played. The roller brush 73 and the scraper 71 are both installed on the collecting bin 72, and the roller brush 73 is located below the scraper 71. The roller brush 73 is used to clean the surface of the filter cloth 6 collected by the scraper 71. On the one hand, it can further collect the filter cake that the scraper 71 has not collected thoroughly, and on the other hand, it can perform preliminary cleaning of the filter cloth 6, reducing the workload of subsequent cleaning of the filter cloth 6, so that the filter cloth 6 can be cleaned more thoroughly. Furthermore, the unloading device 7 also includes a cleaning motor for driving the roller brush 73 to rotate.

[0030] Furthermore, the cleaning device 8 is used to clean the filter cloth 6 after solid-liquid separation. The cleaning device 8 includes a first cleaning component 81 disposed above the filter cloth 6 and a second cleaning component 82 disposed below the filter cloth 6, and the first component is disposed opposite to the second component. The first cleaning component 81 includes a first cleaning pipe and a plurality of first nozzles detachably mounted on the first cleaning pipe, and the water outlet of the first nozzle is disposed downward, toward the upper surface of the filter cloth 6. The second cleaning component 82 includes a second cleaning pipe, a cleaning brush, and a plurality of second nozzles detachably mounted on the second cleaning pipe, the cleaning brush being mounted on the right side of the second cleaning pipe through a connecting bracket, and the cleaning brush being located on the left side of the first cleaning pipe, and the cleaning brush being disposed along the width of the filter cloth 6. The second nozzle is disposed obliquely, and the water outlet of the second nozzle is oriented toward the cleaning brush and is matched with the cleaning brush.

[0031] Furthermore, the cleaning device 8 also includes a water supply device for supplying water to the first cleaning pipe and the second cleaning pipe.

[0032] Specifically, when the upper filter cloth 6 is subjected to solid-liquid separation and then moves to the lower layer through the unloading device 7, the cleaning device 8 arranged below the right end of the frame 1 is operated, and the first nozzle of the first cleaning component 81 sprays water to clean the upper surface of the filter cloth 6, and the cleaning water passes through the filter cloth 6 and cleans the filter cloth 6 under the action of gravity, and then when the filter cloth 6 passes through the cleaning brush, the cleaning brush cleans the lower surface of the filter cloth 6, and while the cleaning brush cleans the filter cloth 6, the second nozzle of the second cleaning component 82 rinses the filter cloth 6, and cooperates with the brush to perform secondary cleaning on the filter cloth 6, thereby improving the cleaning efficiency of the filter cloth 6 and achieving good cleaning effect. This embodiment uses water jet to clean the filter cloth 6, which can fully ensure the cleaning effect, and the detachable nozzle is not easy to be blocked and is easy to disassemble and clean, which can effectively ensure the clean condition of the filter cloth 6.

[0033] This embodiment uses an integral annular rubber belt as a vacuum chamber. The annular rubber belt is driven by a motor to run continuously. The filter cloth 6 is laid on the rubber belt and runs synchronously with it. The rubber belt contacts the vacuum slide and the upper annular friction belt to form a water seal. The slurry is evenly distributed on the filter cloth 6 by the distributor. When the vacuum chamber is connected to the vacuum system, a vacuum filtration area is formed on the rubber belt. The filtrate passes through the filter cloth 6 and is collected through the liquid collection groove on the rubber belt and enters the vacuum box 10 through the liquid outlet hole and the center hole of the vacuum slide. The solid particles are trapped on the filter cloth 6 to form a filter cake. As the rubber belt moves, the formed filter cake enters the filter cake washing area and the washing and drying area in turn. Finally, the filter cloth 6 is separated from the rubber belt in the unloading area. The filter cake is unloaded by the unloading device 7 at the unloading roller. The filter cloth 6 with the unloaded filter cake is cleaned by the cleaning device 8 to obtain regeneration. After passing through a group of support shafts and a deviation correction device, it re-enters the filtration area and starts a new round of filtration.

Claims

1. A vacuum belt filter for molecular sieve slurry, comprising a frame (1), a drive device and a vacuum system, characterized in that: It also includes a feeding device (4), wherein a rubber belt and a filter cloth (6) laid on the rubber belt are installed on the frame (1); the feeding device (4) includes a feeding pipe (42) arranged transversely above the filter cloth (6), a feeding bracket for fixing the feeding pipe (42) on the feeding bracket, a distributor matched with the discharge port of the feeding pipe (42), and a distribution bracket for fixing the distributor above the filter cloth (6); a feeding port for inputting slurry is provided at the top of the feeding pipe (42); The vacuum system comprises a vacuum box (10) for slidingly contacting the rubber belt and a lifting device (9) for controlling the vacuum box (10) to move up and down, wherein the lifting device (9) comprises a scissor-type lifting mechanism installed on a frame (1) and a driving cylinder for driving the scissor-type lifting mechanism to move up and down; The distributor comprises a plurality of material discharge chutes (41) arranged in parallel, wherein the material discharge chutes (41) are arranged to be inclined downward, and the material discharge chutes (41) are designed to be arc-shaped, that is, the height of the upper end of the material discharge chute (41) is greater than the height of the lower end of the material discharge chute (41), and the width of the upper end of the material discharge chute (41) is less than the width of the lower end of the material discharge chute (41); the upper end of the material discharge chute (41) cooperates with the discharge port of the feed pipe (42).

2. The vacuum belt filter for molecular sieve slurry according to claim 1, characterized in that: The vacuum belt filter for molecular sieve slurry further comprises a discharge device (7), the discharge device (7) comprising a discharge frame arranged at the right end of the frame (1), a collection bin (72) mounted on the discharge frame, and a scraper (71) and a roller brush (73) mounted on the collection bin (72); the collection bin (72) has an opening at the top, the opening width being used to match the width of the filter cloth (6) and being used to collect filter cake on the filter cloth (6) after solid-liquid separation; the scraper (71) is arranged horizontally, and the blade of the scraper (71) is in contact with the filter cloth (6); the roller brush (73) and the scraper (71) are both mounted on the collection bin (72), and the roller brush (73) is located below the scraper (71); the roller brush (73) is used to clean the surface of the filter cloth (6) collected by the scraper (71).

3. The vacuum belt filter for molecular sieve slurry according to claim 1 or 2, characterized in that: The vacuum belt filter for molecular sieve slurry further comprises a cleaning device (8) for cleaning the filter cloth (6) after solid-liquid separation, the cleaning device (8) comprising a first cleaning component (81) arranged above the filter cloth (6) and a second cleaning component (82) arranged below the filter cloth (6), the first cleaning component and the second cleaning component being arranged opposite to each other; the first cleaning component (81) comprising a first cleaning pipe and a plurality of first nozzles detachably mounted on the first cleaning pipe, the water outlets of the first nozzles being arranged downwardly and facing the upper surface of the filter cloth (6); the second cleaning component (82) comprising a second cleaning pipe, a cleaning brush and a plurality of second nozzles detachably mounted on the second cleaning pipe, the cleaning brush being mounted on the right side of the second cleaning pipe via a connecting bracket, the cleaning brush being located on the left side of the first cleaning pipe, and the cleaning brush being arranged along the width of the filter cloth (6); the second nozzle being arranged obliquely, the water outlet of the second nozzle facing the direction of the cleaning brush and cooperating with the cleaning brush.

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