Sludge transport device for plate-and-frame filter

Abstract

The application relates to a sludge conveying device of a plate-and-frame filter, and relates to the technical field of sludge treatment equipment, which comprises a baffle, a chain conveyor, a slightly-inclined base plate, a sewage tank and a sludge collecting mechanism, the outer side wall of the baffle is provided with a convenient mounting mechanism, the convenient mounting mechanism comprises fixed columns one and two, a connecting buckle and an internal fixing assembly, the end of the fixed column one is sleeved with a limiting ring, the internal part of the fixed column one is provided with the fixing assembly, the fixing assembly comprises a clamping column which is slidably arranged through the side wall of the fixed column one, the fixing assembly drives the clamping column to extend out through the spring, and the connecting buckle is locked in cooperation with the limiting ring, so that the sewage tank can be quickly suspended and fixed, the slightly-inclined base plate is in an arched shape and guides liquid shunting, and the scraper returns to automatically clean the sewage tank. The convenient mounting mechanism is used for realizing lossless and quick dismounting of the sewage tank, meanwhile, the adjustable sludge collecting mechanism is used, the problem of sludge leakage during sludge collection is solved, and the sludge collecting mechanism has the advantages of ingenious structure, convenient operation, good solid-liquid separation effect and the like.

Description

Technical Field

[0001] This application relates to the field of sludge treatment equipment technology, and in particular to sludge transport devices for plate and frame filters. Background Technology

[0002] Plate and frame filters are commonly used solid-liquid separation equipment in industrial production and are widely used in wastewater treatment, chemical, pharmaceutical and other industries. After the filter press operation is completed, the plates and frames are loosened and the dewatered sludge cake falls from between the filter plates. Usually, the sludge needs to be transported to a designated location for collection and treatment by the conveying device below.

[0003] However, the existing sludge transport devices under the plate and frame filter press have some obvious shortcomings. Since some liquid often remains in the sludge cake after pressing, and some filtrate drips down during the falling process, the traditional conveyor belt is mostly a planar structure, which cannot effectively separate this liquid from the solid sludge. As a result, the liquid is transported with the sludge or accumulates and flows on the conveyor belt, causing environmental pollution. In order to collect this liquid, a water collection tank is usually set under the conveyor belt. However, the existing water collection tanks are mostly fixed to the frame by bolts or welding. When sludge accumulates in the tank and needs to be cleaned, disassembly is extremely difficult. Long-term use can easily lead to poor sewage discharge, bacterial growth, and even equipment corrosion.

[0004] In addition, at the sludge bagging stage at the end of the conveying process, different sizes of collection bags or sludge trucks are used on site due to different production batches or treatment needs. The existing discharge ports are usually fixed in size. When the container diameter is smaller than the discharge port, the sludge is very easy to fall to the ground, while when the container diameter is too large, it is easy to cause dust. There is a lack of a device that can flexibly adjust the size of the discharge port to adapt to different collection containers.

[0005] Therefore, this utility model proposes a sludge transport device for a plate and frame filter press to overcome the shortcomings of the prior art. Utility Model Content

[0006] The purpose of this application is to provide a sludge transport device for plate and frame filters, which aims to improve the problem that the sewage tanks of some plate and frame filters are usually fixed with bolts, making disassembly and cleaning cumbersome and time-consuming.

[0007] This utility model provides a sludge transport device for a plate and frame filter press, comprising: opposing baffles, conveyor belt rollers and chain conveyor belt disposed between the baffles, a scraper on the chain conveyor belt, a slightly inclined pad disposed between the baffles and located below the chain conveyor belt, a sewage tank and a sludge collection mechanism disposed below the baffles, and a convenient installation mechanism disposed on the outer wall of the baffles.

[0008] The convenient installation mechanism has a unique quick-locking structure, including a first fixing post fixedly connected to the outer wall of the baffle, a second fixing post fixedly connected to the outer wall of the sewage tank, and a connecting buckle simultaneously sleeved on the outside of the first fixing post and the second fixing post. The end of the first fixing post is sleeved with a limiting ring, and the first fixing post is provided with a fixing component inside. The fixing component includes a locking post that slides through one side wall of the fixing post.

[0009] Furthermore, the baffle and the sewage tank are detachably connected through the convenient installation mechanism, and the locking post and the limiting ring are combined by abutting engagement to prevent the limiting ring from coming out and thus lock the connecting buckle, thereby achieving the suspension and fixation of the sewage tank.

[0010] Preferably, the fixing component further includes a return spring disposed in the internal cavity of the fixing post. One end of the return spring abuts against the inner wall of the fixing post, and the other end abuts against the bottom of the locking post. The structure utilizes the spring force to continuously push the locking post outward to maintain the locked state.

[0011] Preferably, the fixing component further includes a toggle post fixedly connected to the side wall of the locking post. The end face of the fixing post is provided with a sliding groove. The toggle post passes through the sliding groove and extends out of the fixing post. The structure allows the operator to manually toggle the toggle post to retract the locking post, thereby facilitating unlocking.

[0012] Preferably, a limiting block is fixedly connected to one end of the second fixed column away from the sewage tank, and the connecting buckle is located between the side wall of the sewage tank and the limiting block. The structure effectively prevents the connecting buckle from accidentally slipping off the second fixed column.

[0013] Preferably, the cross-section of the micro-sloping pad is high in the middle and low on both sides, which is used to guide the liquid to flow to both sides and drip into the sewage tank. When the scraper rotates to the bottom with the chain conveyor belt, it enters the sewage tank and is used to automatically scrape off the sediment in the sewage tank, so as to achieve cleaning while conveying.

[0014] Preferably, the sludge collection mechanism includes a sludge collection trough fixedly connected to the end of the baffle, an inclined plate is fixedly provided on the inner wall of the sludge collection trough, and a baffle plate is rotatably connected to the bottom of the sludge collection trough. The structure adjusts the size of the bottom opening by changing the angle of the baffle plate.

[0015] Preferably, a rotating column is rotatably connected between the two side walls of the sludge collection trough, the mud baffle is fixedly connected to the rotating column, and the inclined plate is located above the rotating column to cover the gap between the rotating column and the sludge collection trough, preventing the leakage of fine sludge.

[0016] Preferably, a ratchet is fixedly connected to one end of the rotating column extending outside the mud collection trough, and a pawl is rotatably connected to the outer wall of the mud collection trough. The pawl engages with the ratchet, and the ratchet-pawl engagement structure is used to unidirectionally restrict the rotation of the mudguard, ensuring stability after the opening size is adjusted.

[0017] In summary, this application includes at least one of the following beneficial technical effects: 1. This utility model solves the problem in the prior art that sewage tanks are usually fixed with bolts, which is cumbersome and time-consuming to disassemble and clean, leading to sewage accumulation, easy growth of bacteria and difficult maintenance. It achieves the technical effect of quick and non-destructive disassembly and assembly of sewage tanks without the need for tools, greatly improving the efficiency of equipment cleaning and maintenance and the hygiene of use.

[0018] 2. This utility model solves the problem of incomplete solid-liquid separation and easy accumulation or splashing of liquid on the conveyor surface in existing plate and frame filters by setting a slightly inclined pad with a cross-section that is high in the middle and low on both sides under the conveyor belt, and by using a scraper adapted to the bottom. It achieves the technical effect of efficient solid-liquid separation and self-cleaning by automatically guiding the liquid to the sewage tank by gravity and automatically cleaning the sediment at the bottom of the sewage tank by the return scraper.

[0019] 3. This utility model solves the problem of existing sludge collection devices having a fixed outlet size, making it difficult to adapt to collection bags or trolleys of different sizes, and easily causing secondary pollution due to sludge spillage. It utilizes the one-way non-reverse characteristic of the ratchet to adjust the opening angle of the mudguard, thereby achieving the technical effect of flexibly adjusting the size of the sludge discharge port to accurately match various collection containers and effectively preventing sludge spillage. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of the sludge transport device for the plate and frame filter press proposed in this utility model. Figure 2 This is a schematic diagram of the support pipe of the sludge transport device for the plate and frame filter press proposed in this utility model. Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0021] Explanation of reference numerals in the attached figures: 1. Baffle; 2. Conveyor belt rollers; 3. Convenient installation mechanism; 31. Fixing post one; 32. Sewage tank; 33. Restriction ring; 34. Connecting buckle; 35. Fixing post two; 36. Limiting block; 37. Fixing component; 371. Actuating post; 372. Locking post; 373. Return spring; 4. Sludge collection mechanism; 41. Sludge collection trough; 42. Ratchet; 43. Pad; 44. Rotating column; 45. Mudguard; 46. Inclined plate; 5. Chain conveyor belt; 6. Scraper; 7. Slightly inclined pad. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1 - Appendix Figure 3 This application will be described in further detail below.

[0023] Example: Reference Figures 1 to 3 This utility model provides a sludge transport device for a plate and frame filter press, which aims to solve the problems in the prior art where the sludge collection device below the plate and frame filter press not only has poor solid-liquid separation effect, but also the sewage collection tank is usually fixed, which is extremely inconvenient to disassemble and clean, resulting in sewage accumulation, bacterial growth and difficult maintenance.

[0024] like Figure 1 As shown, the device includes two vertically arranged parallel baffles 1 and a conveyor belt roller 2 that is horizontally rotatably connected between the inner walls of the two baffles 1 via bearings. There are two conveyor belt rollers 2, located at the beginning and end of the device respectively. The outer surfaces of the two conveyor belt rollers 2 are tensioned together with a chain conveyor belt 5. The baffles 1 serve as the supporting frame of the entire device, used to install various moving parts and prevent sludge splashing. The conveyor belt rollers 2 are connected to an external drive motor to drive the chain conveyor belt 5 to rotate in a cycle, thereby realizing the conveying of materials.

[0025] A micro-inclined pad 7 is also fixedly connected between the baffles 1. The micro-inclined pad 7 is located below the upper section of the chain conveyor belt 5 and extends along the length of the conveyor belt. The cross-section of the micro-inclined pad 7 is an arched structure with a high middle and low sides. The structure is used to receive the material falling from the plate and frame filter and to guide the liquid in it to the side edges by gravity. Several scrapers 6 are fixedly connected to the outer surface of the chain conveyor belt 5. The bottom edge of the scraper 6 is designed to be a concave arc shape that matches the arched top surface contour of the micro-inclined pad 7. The scraper 6 is used to scrape the solid sludge falling on the top of the micro-inclined pad 7 forward as it moves with the chain conveyor belt 5, while pushing the liquid to both sides. It also includes a sewage tank 32 located below the baffles 1 and a convenient installation mechanism 3 connecting the baffles 1 and the sewage tank 32.

[0026] Reference Figure 2 and Figure 3The convenient installation mechanism 3 includes a first fixed column 31 fixedly connected to the outer wall of the baffle 1 and extending horizontally outward, and a second fixed column 35 fixedly connected to the outer wall of the sewage tank 32 and corresponding to the position of the first fixed column 31. The end of the second fixed column 35 away from the sewage tank 32 is integrally formed or welded with a limiting block 36 with a diameter larger than the column body. The convenient installation mechanism 3 also includes a U-shaped connecting buckle 34, which is vertically sleeved on the outside of the first fixed column 31 and the second fixed column 35, and fastens the two together, thereby realizing the suspension and fixation of the sewage tank 32 under the baffle 1. The end of the first fixed column 31 is sleeved with a circular limiting ring 33, which is located on the side of the connecting buckle 34 away from the baffle 1, and is used to prevent the connecting buckle 34 from falling off the first fixed column 31 by axial blocking. The first fixed column 31 has a hollow cavity inside and a through hole on its side wall. The end face of the first fixed column 31 has a sliding groove, and a fixing component 37 is installed in the internal space.

[0027] The fixing assembly 37 includes a cylindrical locking post 372 that slides within the cavity of the fixing post 31, and a return spring 373 disposed between the bottom of the locking post 372 and the inner wall of the fixing post 31. The return spring 373 is in a compressed state, constantly applying an outward pushing force to the locking post 372, causing the front end of the locking post 372 to pass through the through hole in the side wall of the fixing post 31 and extend to the outside. The extended locking post 372 precisely abuts against the outer end face of the limiting ring 33, thereby locking the position of the limiting ring 33 and preventing it from moving or being removed. The side wall of the locking post 372 is also perpendicular to... A fixed connection is provided with a toggle post 371, which passes through the sliding groove on the end face of the fixed post 31 and extends to the outside for manual operation by the operator. When the sewage tank 32 needs to be disassembled, the toggle post 371 is pushed down, and the toggle post 371 drives the locking post 372 to slide inward and retract into the fixed post 31 against the elastic force of the return spring 373. At this time, the locking post 372 releases its obstruction of the limiting ring 33, and the limiting ring 33 can be removed from the fixed post 31. Then the connecting buckle 34 can be removed, so that the sewage tank 32 is separated from the baffle 1, realizing convenient disassembly and cleaning.

[0028] For the downward return section of the chain conveyor belt 5, its path is designed to pass through the internal space of the sewage tank 32. When the scraper 6 rotates with the conveyor belt to enter the sewage tank 32, the bottom edge of the scraper 6 maintains sliding contact with the bottom surface of the sewage tank 32. In this way, the scraper 6 can automatically scrape off the sludge and impurities settled at the bottom of the sewage tank 32 during the return process, reducing the frequency of manual cleaning.

[0029] A sludge collection mechanism 4 is provided below the discharge end of the chain conveyor belt 5. The sludge collection mechanism 4 includes a sludge collection trough 41 fixedly connected to the end of the baffle 1 and located below the conveyor belt. The sludge collection trough 41 has a funnel-shaped or box-shaped structure and is used to collect sludge falling from the end of the conveyor belt. A mudguard 45 is rotatably connected to the bottom of the sludge collection trough 41. The mudguard 45 acts as a movable bottom door, and the size of the discharge port at the bottom of the sludge collection trough 41 can be adjusted by changing its opening angle to accommodate collection bags or trolleys of different diameters. A horizontal rotatable connection is provided between the two side walls of the sludge collection trough 41. The upper edge of the rotating column 44 and the mudguard 45 are fixedly welded to the rotating column 44, so that the mudguard 45 can swing synchronously with the rotating column 44. One end of the rotating column 44 extends out through the side wall of the mud collection trough 41 and a ratchet 42 is fixedly installed at the extended end. A pawl 43 is rotatably installed on the outer side wall of the mud collection trough 41. Under the action of gravity or auxiliary spring, the pawl 43 always maintains meshing contact with the tooth groove of the ratchet 42. By utilizing the one-way anti-reverse characteristic, the reverse rotation of the rotating column 44 is restricted, thereby locking the mudguard 45 in the preset opening position.

[0030] The inner wall of the sludge collection trough 41 is fixedly welded with a downwardly inclined plate 46. The inclined plate 46 is located above the rotating column 44, and its lower edge extends to cover the axis above the rotating column 44, which plays the role of shielding and guiding the sludge to slide directly onto the surface of the baffle plate 45, so as to avoid the sludge accumulating at the rotating bearing and affecting the flexibility of the mechanism. The two sides of the micro-inclined pad 7 extend downward and cover the upper opening of the sewage tank 32, forming a flow guiding structure similar to the eaves, ensuring that the liquid flowing down from both sides of the micro-inclined pad 7 can accurately drip into the sewage tank 32 without splashing onto the outside of the baffle plate 1 or the chain drive mechanism. The connecting buckle 34 is made of high-strength metal material, and its inner surface is attached with a rubber anti-slip pad to increase the friction between the fixed column 1 31 and the fixed column 2 35 and prevent loosening when the equipment vibrates.

[0031] Working principle: When the plate and frame filter press is working, the sludge cake and residual liquid after pressing fall onto the slightly inclined plate 7 below. Due to the special structure of the slightly inclined plate 7, which is high in the middle and low on both sides, the liquid naturally flows to both sides under the action of gravity and flows into the sewage tank 32 below for collection. At the same time, the drive motor is started to drive the conveyor belt roller 2 to rotate, which in turn drives the chain conveyor belt 5 to circulate. The scraper 6 fixed on the chain belt moves accordingly, pushing the solid sludge that stays on the top of the slightly inclined plate 7 forward to the end, and finally falls into the sludge collection tank 41 of the sludge collection mechanism 4.

[0032] When sludge falls into the sludge collection trough 41, depending on the size of the collection bag or trolley used, the operator manually moves the mudguard 45 or rotates the rotating column 44 to adjust the opening angle of the mudguard 45. At this time, the pawl 43 slides over the back of the teeth of the ratchet 42. When the adjustment stops, the pawl 43 engages with the groove of the ratchet 42. Using the one-way locking function of the ratchet 42, the mudguard 45 is kept at the current angle, thereby controlling the width of the bottom sludge discharge port and preventing sludge from falling outside the container. The internal inclined plate 46 effectively blocks the rotation gap during this process, ensuring that fine sludge is discharged smoothly.

[0033] When the scraper 6 rotates with the chain conveyor belt 5 and enters the downward return section, the scraper 6 enters the sewage tank 32 and slides along the bottom, automatically scraping off the sludge sediment deposited at the bottom of the sewage tank 32 and pushing it towards the discharge port of the sewage tank 32, realizing the function of self-cleaning while conveying, which greatly reduces the burden of manual cleaning.

[0034] When the sewage tank 32 needs to be thoroughly cleaned or repaired, the operator slides down the pusher column 371, causing the locking column 372 inside the fixing column 31 to retract against the elastic force of the return spring 373, thus releasing the obstruction of the limiting ring 33. Then, the limiting ring 33 is removed, and the connecting buckle 34 is pulled outward. At this time, the fixing column 35 on the sewage tank 32 loses its connection with the fixing column 31 on the baffle 1, and the sewage tank 32 can be easily removed. After cleaning, the reverse operation can be performed to quickly reset and install it. The whole process does not require any tools and is efficient and convenient.

Claims

1. A sludge transport device for a plate and frame filter press, comprising: Oppositely arranged baffles (1), conveyor belt rollers (2) and chain conveyor belt (5) disposed between the baffles (1); The chain conveyor belt (5) is provided with scraper (6), and a slightly inclined pad (7) is provided between the baffles (1) located below the chain conveyor belt (5). A sewage tank (32) and a sludge collection mechanism (4) are provided below the baffles (1). Its features are, The outer wall of the baffle (1) is provided with a convenient installation mechanism (3). The convenient installation mechanism (3) includes a first fixing post (31) fixedly connected to the outer wall of the baffle (1), a second fixing post (35) fixedly connected to the outer wall of the sewage tank (32), and a connecting buckle (34) simultaneously sleeved on the outside of the first fixing post (31) and the second fixing post (35). The end of the fixing post (31) is fitted with a limiting ring (33), and the fixing post (31) is provided with a fixing component (37). The fixing component (37) includes a locking post (372) that slides through the side wall of the fixing post (31). The locking post (372) abuts against the limiting ring (33) to prevent the limiting ring (33) from coming out and thus lock the connecting buckle (34).

2. The sludge transport device for the plate and frame filter press according to claim 1, characterized in that, The fixing component (37) also includes a reset spring (373) disposed in the cavity inside the fixing post (31). One end of the reset spring (373) abuts against the inner wall of the fixing post (31), and the other end abuts against the bottom of the locking post (372), for pushing the locking post (372) outward.

3. The sludge transport device for the plate and frame filter press according to claim 2, characterized in that, The fixing component (37) also includes a toggle post (371) fixedly connected to the side wall of the locking post (372). The end face of the fixing post (31) is provided with a sliding groove. The toggle post (371) passes through the sliding groove and extends out of the fixing post (31) to drive the locking post (372) to slide inward against the elastic force of the return spring (373) under force.

4. The sludge transport device for the plate and frame filter press according to claim 1, characterized in that, The fixed post 2 (35) is fixedly connected to a limiting block (36) at one end away from the sewage tank (32), and the connecting buckle (34) is limited between the side wall of the sewage tank (32) and the limiting block (36) to prevent the connecting buckle (34) from falling off the fixed post 2 (35).

5. The sludge transport device for the plate and frame filter press according to claim 1, characterized in that, The cross-section of the micro-sloping pad (7) is high in the middle and low on both sides, which is used to guide the liquid to flow to both sides and drip into the sewage tank (32). When the scraper (6) rotates to the bottom with the chain conveyor belt (5), it enters the sewage tank (32) and is used to scrape off the sediment in the sewage tank (32).

6. The sludge transport device for the plate and frame filter press according to claim 1, characterized in that, The sludge collection mechanism (4) includes a sludge collection trough (41) fixedly connected to the end of the baffle (1). An inclined plate (46) is fixedly provided on the inner wall of the sludge collection trough (41). A mudguard (45) is rotatably connected to the bottom of the sludge collection trough (41). The mudguard (45) is used to adjust the size of the opening at the bottom of the sludge collection trough (41).

7. The sludge transport device for a plate and frame filter press according to claim 6, characterized in that, A rotating column (44) is rotatably connected between the two side walls of the mud collection trough (41). The mud baffle (45) is fixedly connected to the rotating column (44). The inclined plate (46) is located above the rotating column (44) and is used to cover the gap between the rotating column (44) and the mud collection trough (41).

8. The sludge conveying device for the plate and frame filter press according to claim 7, characterized in that, A ratchet (42) is fixedly connected to one end of the rotating column (44) extending outward from the mud collection trough (41). A pawl (43) is rotatably connected to the outer wall of the mud collection trough (41). The pawl (43) engages with the ratchet (42) to limit the rotation direction of the ratchet (42) and the rotating column (44).

Images