Vertical filter press

Abstract

The utility model belongs to the technical field of filter presses, and particularly discloses a vertical filter press. The vertical filter press mainly comprises a rack, a filter plate group, a washing device, a hopper and other structural components. Wherein the rack is mainly used for controlling the unfolding and folding of the filter plate group, the filter plate group is a main place for solid-liquid separation, the hopper and the washing device are arranged on two sides of the rack and are used for collecting materials and cleaning a filter medium, and the pipeline system is used for connecting the filter press with peripheral corollary equipment. According to the vertical filter press disclosed by the utility model, a mode of introducing high-pressure gas to carry out gas extrusion is adopted, solid-liquid separation of slurry and drying of a filter cake are realized by a single cavity, and different from the extrusion mode of a traditional vertical filter press, a diaphragm extrusion link is omitted, compressed air is directly introduced into the cavity, and liquid is separated from the filter cake by utilizing pressure, so that the production efficiency is improved. Meanwhile, the high-pressure gas can take away residual liquid on the filter cake so as to dry the filter cake, the structural design is optimized, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of filter press technology, specifically to a vertical filter press. Background Technology

[0002] Existing vertical filter presses are largely similar in design, mostly employing rubber diaphragms to compress materials for solid-liquid separation. To prevent material splashing during compression, multiple rubber sealing rings are typically used to maintain pressure. However, under conditions of high temperature, strong acid, or strong alkali, structural components made of rubber are prone to aging and deterioration due to the inherent properties of the material, leading to a reduced lifespan and decreased equipment reliability. Furthermore, the filter cloth entanglement between the upper and lower filter plates in a vertical filter press exerts a horizontal traction force, making it prone to tearing. To prevent lateral movement of the filter plates, reliable guiding devices are needed, and to allow for normal filter cloth movement, tensioning and adjustment devices are required. This complexity increases the structural complexity of the vertical filter press, leading to a high failure rate and difficulties in troubleshooting and maintenance.

[0003] Therefore, this utility model proposes a vertical filter press. Utility Model Content

[0004] The purpose of this utility model is to propose a vertical filter press, which uses high-pressure gas to compress the gas and achieve slurry filtration and filter cake drying in a single chamber. At the same time, the modular structural design improves the reliability of machine operation and facilitates later maintenance.

[0005] To achieve the above objectives, this utility model adopts the following technical solution:

[0006] A vertical filter press includes a frame, a filter plate assembly, a washing device, and a hopper;

[0007] The frame includes a column, a hydraulic cylinder, a hydraulic cylinder seat, a pressure plate, a backstop plate, and a guide rod;

[0008] The machine includes two columns, which are vertically and symmetrically arranged in the middle of the frame. The upper part of the column is connected to the cylinder seat, and the cylinder is vertically arranged in the middle of the cylinder seat. The piston rod of the cylinder can extend downward and is connected to the pressure plate. The lower part of the column is connected to the anti-reverse plate, and multiple guide rods are symmetrically arranged above the anti-reverse plate.

[0009] The filter plate assembly includes a top filter plate, a middle filter plate, a bottom filter plate, and a connecting rod;

[0010] The top filter plate is located at the top of the filter plate assembly, and its upper surface is connected to the pressure plate. Below the top filter plate is the middle filter plate, and below the middle filter plate is the bottom filter plate. The lower surface of the bottom filter plate is connected to the upper surface of the anti-reverse plate. The top filter plate and the middle filter plate are connected by a connecting rod.

[0011] The hopper is located on one side of the frame, and the washing device is located on the other side of the frame.

[0012] Preferably, the central filter plate includes a central filter plate body and a filter cloth;

[0013] The upper part of the middle filter plate body has a filtrate chamber, and the filtrate chamber is evenly distributed with flow guide protrusions. A grid is installed in the filtrate chamber, the lower surface of the grid is in contact with the flow guide protrusions, and the upper surface of the grid is flush with the upper surface of the middle filter plate body.

[0014] The upper part of the middle filter plate body is also provided with a liquid guiding groove, which is distributed along the outer edge of the filtration chamber;

[0015] The lower part of the middle filter plate body is provided with a feeding chamber;

[0016] Two hanging plates are provided on each of the front and rear sides of the central filter plate body, and the hanging plates are symmetrical in pairs.

[0017] A vacuum suction port is provided at the rear center of the central filter plate body. The vacuum suction port is connected to the liquid guiding groove through the liquid guiding hole. Filtration ports are symmetrically provided on both sides of the vacuum suction port. The filtration ports are located inside the hanging plate and are connected to the filtration chamber through the filtration hole.

[0018] The front side of the middle filter plate body is provided with a feed inlet, which is arranged opposite to the filtrate inlet. The feed inlet is connected to the feed chamber through a feed hole.

[0019] A left bracket is connected to the left side of the central filter plate body, and a driving device is provided on the left bracket;

[0020] The right side of the middle filter plate body is connected to a right bracket, and a tensioning device is provided on the right bracket;

[0021] Guide rollers are provided on the upper middle side of the left support and the upper middle side of the right support. Filter cloth is provided above the guide rollers and the grid. The filter cloth is connected end to end. One side of the inner wall of the filter cloth is connected to the driving device, and the other side of the inner wall of the filter cloth is connected to the tensioning device.

[0022] Preferably, the driving device includes a drive roller, a reducer, and a motor;

[0023] The motor is connected to the drive roller via a reducer, and the drive roller is connected to the filter cloth.

[0024] Preferably, a rectangular groove is provided on the right bracket, and the rectangular groove is installed in conjunction with the tensioning device. The tensioning device includes a pressure plate, a tensioning screw, a round nut, a slider bearing, and a tensioning roller.

[0025] The right support is connected to the pressure plate at one end, and the pressure plate is connected to the tensioning screw. The right end of the tensioning screw is a square head, and the left end of the tensioning screw is connected to the slider bearing through a round nut. The slider bearing can move left and right along the rectangular groove, and the end of the tensioning roller is connected to the middle position of the slider bearing.

[0026] Preferably, the driving device includes a drive roller, a reducer, and a motor;

[0027] The motor is connected to the drive roller via a reducer, and the drive roller is connected to the filter cloth.

[0028] Preferably, a rectangular groove is provided on the right bracket, and the rectangular groove is installed in conjunction with the tensioning device. The tensioning device includes a pressure plate, a tensioning screw, a round nut, a slider bearing, and a tensioning roller.

[0029] The right support is connected to the pressure plate at one end, and the pressure plate is connected to the tensioning screw. The right end of the tensioning screw is a square head, and the left end of the tensioning screw is connected to the slider bearing through a round nut. The slider bearing can move back and forth along the rectangular groove, and the end of the tensioning roller is connected to the middle position of the slider bearing.

[0030] Preferably, the mounting plate has a first small hole, a second small hole, and a third small hole, wherein the second small hole is located in the middle of the mounting plate and is connected to the guide rod;

[0031] A first small hole and a third small hole are symmetrically arranged on both sides of the second small hole, and a connecting rod is arranged in the first small hole and the second small hole.

[0032] Preferably, the width of the filter cloth is greater than the width of the feed chamber and the filtrate chamber, and less than or equal to the length of the guide roller.

[0033] Preferably, multiple sets of the central filter plate body and the filter cloth are provided, wherein the central filter plate body is arranged sequentially along the vertical direction, and the filter cloth is disposed between two adjacent sets of central filter plate bodies;

[0034] The motors of the two adjacent sets of middle filter plates are symmetrically arranged on opposite sides.

[0035] Preferably, the hopper includes a hopper body and a baffle plate;

[0036] The top of the hopper body is open, and the bottom of the hopper body is flush with the bottom of the frame;

[0037] A baffle plate is connected to the top of the hopper body. The outer contour of the baffle plate is U-shaped, and the upper edge of the baffle plate is higher than the upper edge of the filter plate assembly. Preferably, the washing device includes a washing chamber and spray pipes.

[0038] The bottom of the washing chamber is provided with washing chamber support legs, and the bottom of the washing chamber support legs is flush with the bottom of the frame; the washing chamber has an opening on one side and viewing windows on the other three sides, with the openings located on the side closest to the filter plate assembly.

[0039] The lower part of the washing chamber is provided with an inclined sewage collection plate, and the sewage collection plate is bent at the center line. The lowest end of the sewage collection plate is connected to the sewage outlet, which is located on the lower right side of the washing chamber and is centrally located.

[0040] The spray pipe is installed inside the washing chamber.

[0041] Preferably, a pipeline system is also provided, through which the vertical filter press is connected to the external supporting equipment.

[0042] The beneficial effects of this utility model are as follows:

[0043] This utility model of vertical filter press adopts gas extrusion method to achieve solid-liquid separation of slurry and drying of filter cake in a single chamber. Unlike the extrusion method of traditional vertical filter press, it omits the diaphragm extrusion step and directly introduces compressed air into the chamber. The pressure is used to separate the liquid from the filter cake. At the same time, the high-pressure gas can carry away the residual liquid on the filter cake to achieve drying of the filter cake. This optimizes the structural design and improves working efficiency.

[0044] This utility model adopts a modular structure design driven by a single plate. Each filter plate can function as an independent filtration unit to perform pressure filtration. Each filter plate can be unloaded by an independent motor. The tension of the filter cloth can be adjusted by moving the tension roller through the slider bearing. The modular structure design also facilitates subsequent maintenance and replacement of related parts. At the same time, due to the modular structure design, each filter plate operates independently. Each filter plate has upper and lower cavities, and there are two layers of filter cloth between the feed cavity and the filtrate cavity. There is no filter cloth entanglement between the filter plates, and the filter plate assembly is no longer affected by horizontal traction force, thus improving structural stability.

[0045] In addition, unlike traditional vertical filter presses that use rubber ring seals, this utility model vertical filter press uses gas sealing between the filter plates. That is, liquid guiding grooves are opened around the grid of the filter plate, and vacuum suction ports are set to draw vacuum to achieve sealing. At the same time, when liquid seeps out between the filter plates during filtration, the seepage can also be extracted through the liquid guiding grooves to ensure the normal operation of the filter press. Moreover, compared with the traditional diaphragm extrusion and rubber ring sealing methods, which need to consider conditions such as temperature and acidity / alkalinity, this utility model vertical filter press can adapt to more complex working conditions.

[0046] Finally, compared with the double-sided discharge of traditional vertical filter presses, this utility model uses a single-sided discharge method to collect filter cake. By adopting a single-plate driven modular structure design, the filter cloth moves in the same direction, achieving discharge on the same side, reducing the number of hoppers and saving certain costs. Attached Figure Description

[0047] Figure 1 This is a schematic diagram of the overall structure of the vertical filter press of this utility model;

[0048] Figure 2 This is a schematic diagram of the frame structure in an embodiment of the present utility model;

[0049] Figure 3 This is a left view of the filter plate assembly in an embodiment of the present invention;

[0050] Figure 4 This is a schematic diagram of the structure of the middle filter plate in an embodiment of the present utility model;

[0051] Figure 5 for Figure 4 Enlarged view of point A;

[0052] Figure 6 This is a top view of the middle filter plate in an embodiment of the present utility model;

[0053] Figure 7 for Figure 6 Sectional view at point AA;

[0054] Figure 8 for Figure 6 Partial sectional view at BB;

[0055] Figure 9 This is a schematic diagram of the structure of the grille in an embodiment of the present utility model;

[0056] Figure 10 This is a bottom view of the middle filter plate in an embodiment of the present utility model;

[0057] Figure 11 This is a schematic diagram of the hopper structure in an embodiment of the present utility model;

[0058] Figure 12 This is a schematic diagram of the washing device in an embodiment of the present utility model;

[0059] Figure 13 This is a schematic diagram of the spray pipe mechanism in an embodiment of the present utility model;

[0060] Figure 14 This is a schematic diagram of the structure of the sewage collection plate in an embodiment of the present utility model;

[0061] Among them, 1-frame: 11-cylinder, 111-piston rod, 12-cylinder seat, 13-column, 14-large round nut, 15-half locking key, 16-pressing plate, 17-anti-reverse plate, 18-guide rod;

[0062] 2-Filter plate assembly: 21-Top filter plate;

[0063] 22-Middle filter plate: 221-Middle filter plate body: 2211-Feed chamber, 2212-Feed inlet, 2213-Feed hole, 2214-Filtration chamber, 22141-Guide boss, 2215-Filtration port, 2216-Filtration hole, 2217-Guide groove, 2218-Vacuum suction port, 2219-Guide hole;

[0064] 222-Grid; 2221-Grid hole; 223-Guide roller; 224-Left support; 225-Right support; 2251-Rectangular groove;

[0065] 226-Hanging plate: 2261-First small hole, 2262-Second small hole, 2263-Third small hole;

[0066] 227-Drive unit: 2271-Motor, 2272-Reducer, 2273-Drive roller;

[0067] 228-Tensioning device: 2281-Pressure plate, 2282-Tensioning screw, 22821-Square head, 2283-Round nut, 2284-Sliding bearing, 2285-Tensioning roller;

[0068] 23-Bottom filter plate;

[0069] 24-Connecting rod: 241-Stud, 242-Hex nut;

[0070] 25-Filter cloth;

[0071] 3-Hopper: 31-Baffle plate, 32-Hopper body;

[0072] 4-Washing device: 41-Washing chamber: 411-Viewing window, 412-Sewage collection plate, 413-Drain outlet; 42-Spray pipe: 421-Spray pipe, 422-Nozzle; 43-Washing chamber support leg;

[0073] 5-Pipeline system. Detailed Implementation

[0074] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0075] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0076] Combination Figures 1 to 14 As shown, this utility model proposes a vertical filter press. This novel vertical filter press uses gas extrusion to filter slurry and dry filter cake. At the same time, it adopts a modular structural design to improve the reliability of machine operation and facilitate later maintenance and replacement.

[0077] Combination Figure 1 As shown, the new vertical filter press mainly includes structural components such as frame 1, filter plate group 2, hopper 3, washing device 4, and pipeline system 5. Among them, frame 1 is mainly used to control the opening and closing of filter plate group 2, which is the main place for solid-liquid separation of slurry. The hopper 3 and washing device 4 are set on both sides of frame 1. The hopper 3 is used for material collection, and the washing device 4 is used for cleaning filter cloth 25. The pipeline system 5 is used to connect the vertical filter press with external supporting equipment.

[0078] Combination Figure 1 and Figure 2 As shown, the frame 1 includes structural components such as a hydraulic cylinder 11, a hydraulic cylinder seat 12, a column 13, a clamping plate 16, a backstop plate 17, and a guide rod 18. Among them, there are two columns 13, which are arranged vertically and symmetrically in the middle of the frame 1. The columns 13 can provide space for the filter plate assembly 2 to unfold and close.

[0079] Combination Figure 2As shown, the lower part of the column 13 is connected to a stop plate 17, which supports the main frame of the filter press. Multiple guide rods 18 are symmetrically arranged above the stop plate 17, guiding the unfolding and closing of the filter plate assembly 2. The upper part of the column 13 is connected to a cylinder seat 12. The stop plate 17, column 13, and cylinder seat 12, connected and fixed from bottom to top, form a frame structure, within which the filter plate assembly 2 is housed. The column 13 is connected to the cylinder seat 12 and the stop plate 17 via large round nuts 14.

[0080] Combination Figure 2 As shown, the hydraulic cylinder 11 is vertically arranged in the middle of the hydraulic cylinder seat 12. The piston rod 111 of the hydraulic cylinder 11 can extend downward, and the piston rod 111 of the hydraulic cylinder 11 is connected to the pressing plate 16 through the half-locking key 15. The piston rod 111 of the hydraulic cylinder 11 can drive the pressing plate 16 to move up and down. The hydraulic cylinder 11, as a power source, drives the pressing plate 16 to realize the closing and unfolding of the filter plate group 2.

[0081] Combination Figure 3 As shown, the filter plate assembly 2 is located inside the frame 1, and the filter plate assembly 2 mainly includes structural components such as the top filter plate 21, the middle filter plate 22, the bottom filter plate 23, and the connecting rod 24.

[0082] Combination Figure 3 As shown, the top filter plate 21 is located at the top of the filter plate assembly 2, and its upper surface is connected to the clamping plate 16. Below the top filter plate 21 is the middle filter plate 22, and below the middle filter plate 22 is the bottom filter plate 23. The lower surface of the bottom filter plate 23 is connected to the upper surface of the anti-reverse plate 17. The top filter plate 21 and the middle filter plate 22 are connected by a connecting rod 24.

[0083] Combination Figure 4 As shown, the central filter plate 22 includes a central filter plate body 221, a grid 222, a guide roller 223, a left support 224, a right support 225, a hanging plate 226, a drive device 227, and a tensioning device 228. Among them, the central filter plate body 221 is located in the middle of the central filter plate 22 and is the main place for solid-liquid separation.

[0084] Combination Figure 4 and Figure 6 As shown, the lower part of the middle filter plate body 221 has a feed chamber 2211, which is used to contain slurry and high-pressure gas.

[0085] Combination Figure 6 , Figure 8 as well as Figure 10As shown, two feed inlets 2212 are symmetrically arranged at the front of the middle filter plate body 221. The feed inlets 2212 are the entrances for slurry and high-pressure gas to enter the feed chamber 2211. The feed inlets 2212 and the feed chamber 2211 are connected by feed holes 2213. Each feed inlet 2212 corresponds to six feed holes 2213. The six feed holes 2213 are symmetrical in pairs. The function of the feed holes 2213 is to connect the feed inlets 2212 and the feed chamber 2211. The multiple feed holes 2213 can ensure the strength of the middle filter plate body 221 while ensuring good passage of slurry and high-pressure gas. When one feed hole 2213 is blocked, the material can smoothly enter the feed chamber 2211 through the other feed holes 2213, ensuring the smooth progress of the subsequent process.

[0086] This utility model of a vertical filter press achieves solid-liquid separation of slurry and drying of filter cake in a single chamber by conveying high-pressure gas for gas extrusion. Unlike the extrusion method of traditional vertical filter presses, it omits the diaphragm extrusion stage and directly introduces compressed air into the chamber. The pressure is used to separate the liquid from the filter cake, and the high-pressure gas can carry away the residual liquid on the filter cake to achieve drying. This optimizes the structural design and improves working efficiency.

[0087] Combination Figure 4 and Figure 6 As shown, a filtrate chamber 2214 is provided above the middle filter plate body 221, which is used to collect the filtrate flowing into the feed chamber 2211. Two filtrate inlets 2215 are symmetrically provided on the rear side of the middle filter plate body 221. The filtrate inlets 2215 are connected to the filtrate chamber 2214 through filtrate holes 2216. Each filtrate inlet 2215 corresponds to six filtrate holes 2216, and the six filtrate holes 2216 are symmetrically arranged in pairs. The filtrate inlets 2215 are located on both sides of the vacuum suction port 2218 and inside the hanging plate 226.

[0088] A flow-guiding protrusion 22141 is provided on the lower surface of the filtrate chamber 2214. The flow-guiding protrusion 22141 provides space for the flow of the filtrate and can also support the upper grid 222. The grid 222 is installed inside the filtrate chamber 2214. The lower surface of the grid 222 contacts the flow-guiding protrusion 22141, and the upper surface of the grid 222 is flush with the upper surface of the middle filter plate body 221. The grid 222 bears the pressure from the filter cloth 25, slurry, high-pressure gas, and the solid-liquid separation process. Figure 9 As shown, grid holes 2221 are evenly distributed on the grid 222. The grid holes 2221 ensure the strength of the grid 222 while facilitating the smooth flow of the filtrate into the filtrate chamber 2214.

[0089] Combination Figure 4As shown, filter cloth 25 exists between the feed chamber 2211 and the filtrate chamber 2214, and its function is to retain solids in the slurry while filtering the liquid. Combined with Figure 6 As shown, a liquid guiding groove 2217 is provided on the edge of the filtrate chamber 2214. The liquid guiding groove 2217 is used to collect the liquid that overflows during the operation of the machine. At the same time, during the closing of the filter plate assembly 2, the liquid guiding groove 2217 is in a vacuum state, so that each filter plate is sealed to a pressure-holding state.

[0090] Combination Figure 6 , Figure 8 as well as Figure 10 As shown, a vacuum port 2218 is provided in the middle of the rear part of the middle filter plate body 221. The vacuum port 2218 is connected to the liquid guiding groove 2217 through the liquid guiding hole 2219. When the filter plate assembly 2 is closed, the air in the liquid guiding groove 2217 enters the liquid guiding hole 2219 and is sucked out by the vacuum port 2218, thereby achieving sealing and pressure maintenance between the filter plates. At the same time, the overflowing slurry and filtrate can also be collected into the liquid guiding groove 2217 and discharged to avoid filtrate splashing out.

[0091] Unlike traditional vertical filter presses that use rubber ring seals, this utility model's vertical filter press employs a gas seal between the filter plates. Specifically, liquid guide grooves 2217 are created around the grid of the filter plates, and vacuum suction ports 2218 are provided to draw in vacuum and achieve a seal. Simultaneously, when liquid leaks between the filter plates during filtration, the leaked liquid can be extracted through the liquid guide grooves 2217, ensuring the normal operation of the filtration process. Furthermore, compared to traditional diaphragm extrusion and rubber ring seals, which require consideration of temperature and pH conditions, this utility model's vertical filter press can adapt to more complex operating conditions.

[0092] Combination Figures 4 to 6 As shown, a left support 224 is connected to the left side of the middle filter plate body 221. A drive device 227 and a guide roller 223 are provided on the left support 224. The drive device 227 can drive the filter cloth 25 to move, and the guide roller 223 provides certain support for the filter cloth 25. The drive device 227 and the guide roller 223 are connected to the middle filter plate body 221 through the left support 224.

[0093] Combination Figure 6 As shown, the drive device 227 includes a drive roller 2273, a reducer 2272, and a motor 2271. The output shaft of the motor 2271 is connected to the drive roller 2273 via the reducer 2272, and the drive roller 2273 is connected to the filter cloth 25. The motor 2271 outputs torque as a power source, and the reducer 2272 transmits the torque, driving the drive roller 2273 to rotate. The filter cloth 25 is connected to the drive roller 2273, and the filter cloth 25 rotates with the drive roller 2273, allowing the filter cake trapped on the filter cloth 25 to enter the hopper 3 for collection and storage.

[0094] It should be noted that multiple sets of the central filter plate body 221 and filter cloth 25 can be provided. The central filter plate bodies 221 are arranged sequentially in the vertical direction, and the filter cloth 25 is placed between two adjacent sets of central filter plate bodies 221. The motors 2271 of the two adjacent sets of central filter plate bodies 221 are symmetrically arranged on opposite sides. This design can prevent collisions and interference between the motors 2271 in the drive device 227.

[0095] Combining 4 to Figure 6 As shown, a right bracket 225 is connected to the right side of the central filter plate body 221. A guide roller 223 for supporting and assisting in the movement of the filter cloth 25 is also connected to the upper middle part of the right bracket 225. A rectangular groove 2251 is provided on the right bracket 225, and a tensioning device 228 is installed within the rectangular groove 2251. The tensioning device 228 can tension the filter cloth 25, i.e., adjust the tightness of the filter cloth 25. The tensioning device 228 includes a pressure plate 2281, a tensioning screw 2282, a round nut 2283, a slider bearing 2284, and a tensioning roller 2285. The pressure plate 2281 is connected to the right end of the right bracket 225, and the pressure plate 2281 fixes the tensioning device 228 within the rectangular groove 2251 on the right side of the right bracket 225. The pressure plate 2281 has a tensioning screw 2282 internally threaded. A square head 22821 is located on the right side of the tensioning screw 2282 to facilitate its rotation. The threaded engagement between the tensioning screw 2282 and the pressure plate 2281 converts its rotational motion into linear motion. The left end of the tensioning screw 2282 is connected to the slider bearing 2284 via a round nut 2283, providing connection while eliminating the rotational effect of the tensioning screw 2282 on the slider bearing 2284. The upper and lower ends of the slider bearing 2284 are engaged with a rectangular groove 2251, facilitating linear movement of the slider bearing 2284 in a specified direction, i.e., the slider bearing 2284 can move back and forth along the rectangular groove 2251. The middle position of the slider bearing 2284 is connected to the end of the tension roller 2285. The slider bearing 2284 drives the tension roller 2285 to move linearly without affecting the rotational movement of the tension roller 2285.

[0096] When it is necessary to replace or disassemble the filter cloth 25, the tension of the filter cloth 25 needs to be reduced by the tensioning device 228. By rotating the tensioning screw 2282, the slider bearing 2284 is driven to move along the rectangular groove 2251 towards the side closer to the middle filter plate 22. The tensioning roller 2285 moves with the slider bearing 2284, and the filter cloth 25 is in a relaxed state, which makes it easier to disassemble and replace.

[0097] This utility model adopts a modular structure design driven by a single plate. Each filter plate can function as an independent filtration unit to perform pressure filtration. Each filter plate can be unloaded by an independent motor 2271. The tension roller 2285 is moved by the slider bearing 2284 to adjust the tension of the filter cloth 25. The modular structure design also facilitates subsequent maintenance and replacement of related parts. At the same time, due to the modular structure design, each filter plate operates independently. Each filter plate has upper and lower cavities, and there are two layers of filter cloth 25 between the feed cavity 2211 and the filtrate cavity 2216. There is no filter cloth 25 entanglement between the filter plates, and the filter plate assembly 2 is no longer affected by horizontal traction force, thus improving structural stability.

[0098] Combination Figure 6 As shown, guide rollers 223 are provided on the upper middle side of the left support 224 and the upper middle side of the right support 225. Filter cloth 25 is positioned above the guide rollers 223 and the grid 222, with the filter cloth 25 connected end-to-end. One side of the inner wall of the filter cloth 25 is connected to the drive device 227, and the other side is connected to the tensioning device 228. Simultaneously, combined with... Figure 4 As shown, the filter cloth 25 above the grid 222 has two layers, which can better filter the slurry.

[0099] Combination Figure 1 , Figure 4 as well as Figure 6 As shown, four hanging plates 226 are arranged symmetrically in pairs along the front and rear edges of the central filter plate body 221. Each hanging plate 226 has a first small hole 2261, a second small hole 2262, and a third small hole 2263. The first small hole 2261 and the third small hole 2262 are connected to the connecting rod 24 to connect the filter plate assemblies 2 in series. The second small hole 2262 is connected to the guide rod 18, providing guidance for the unfolding and closing of the filter plate assemblies 2. Figure 1 and Figure 4 As shown, the connecting rod 24 includes a stud 241 and hexagonal nuts 242. A pair of hexagonal nuts 242 are provided on each of the upper and lower sides of the stud 241. The lower side of the upper hexagonal nut 242 is connected to the upper filter plate hanging plate 226, and the upper side of the lower hexagonal nut 242 is connected to the lower filter plate hanging plate 226. The length of the stud 241 is greater than or equal to the sum of the height of the feed chamber 2211 and the thickness of the middle filter plate body 221, and the length of the stud 241 is less than or equal to twice the thickness of the middle filter plate body 221. The stud 241 guides the vertical movement of the filter plate assembly 2. The hexagonal nuts 242 are distributed at both ends of the stud 241, enabling the filter plate assembly 2 to move vertically and vertically, while also limiting the height difference between the filter plate assemblies 2. The double-layered hexagonal nuts 242 prevent the nuts from loosening and detaching from the stud 241. The connecting rod 24 is symmetrically arranged in the horizontal direction and placed on opposite sides in the vertical direction, providing vertical force for the unfolding and closing of the filter plate assembly 2.

[0100] When the piston rod 111 of the hydraulic cylinder 11 extends downward, it drives the pressing plate 16 to move downward, causing the filter plate assembly 2 to close together and the hanging plates 226 to move along the guide rod 18 and approach each other to complete the subsequent filtration process. Similarly, when the piston rod 111 of the hydraulic cylinder 11 retracts upward, it drives the pressing plate 16 to move upward, causing the filter plate assembly 2 to unfold and the hanging plates 226 to move away from each other along the guide rod 18 to complete the subsequent filter cake recovery. The length of the guide rod 18 is greater than the height of the hanging plates 226 in the top filter plate 21 when the filter plate assembly 2 is unfolded.

[0101] Combination Figure 1 and Figure 4 As shown, compared to the middle filter plate 22, the upper part of the top filter plate 21 is connected to the pressing plate 16, so it lacks the filtrate chamber 2214, the grid 222, and the liquid guiding groove 2217. Correspondingly, it lacks the vacuum suction port 2218 and the filtrate port 2215 on its side. It also lacks the left support 224 and its connecting parts, and the right support 225 and its connecting parts. The remaining configuration is the same as that of the middle filter plate 22. Compared to the middle filter plate 22, the bottom filter plate 23 is connected to the pressing plate 16 at its bottom, so it lacks the feed inlet chamber 2211 at its bottom, and correspondingly, it lacks the feed inlet 2212 on its side. The remaining configuration is the same as that of the middle filter plate 22.

[0102] Combination Figure 3 As shown, the top filter plate 21 has no drive unit 227. The drive units 227 of the adjacent filter plates in the middle filter plate 22 and the bottom filter plate 23 are distributed on opposite sides. This design can prevent collision interference between the motors 2271 in the drive unit 227.

[0103] Combination Figure 1 and Figure 11 As shown, a hopper 3 is located on the left side of the frame to collect the dried material discharged from the right filter plate assembly 2. The hopper 3 includes a hopper body 32 and a baffle plate 31. The top of the hopper body 32 is open for easy material collection and centralized transportation. The bottom of the hopper body 32 is flush with the bottom of the frame 1. The top of the hopper body 32 is connected to the baffle plate 31, which has a U-shaped outer contour and an opening facing the filter plate assembly 2 to prevent material splashing.

[0104] Compared to the traditional vertical filter press with double-sided unloading, this utility model uses a single-sided unloading method to collect filter cake. By adopting a modular structure design driven by a single plate, the filter cloth 25 moves in the same direction, achieving unloading on the same side, reducing the number of hoppers and saving certain costs.

[0105] Combination Figures 12 to 14As shown, a washing device 4 is installed on the right side of the frame 1. During operation, the filter cloth 25 is cleaned using high-pressure water, thereby improving its service life. The washing device 4 includes a washing chamber 41 and spray pipes 42. The washing chamber 41 is located at the top of the washing device 4 and is the main area for cleaning the filter cloth 25. The washing chamber 41 has a single-sided opening to facilitate the entry of the filter cloth 25. Spray pipes 42 are installed inside the washing chamber 41. Combined with… Figure 13 As shown, the spray pipe 42 includes nozzles 422 and a spray pipe 421. The nozzles 422 are symmetrically distributed on the sides of the spray pipe 421. High-pressure water enters the nozzles 422 through the spray pipe 421 and is sprayed from the nozzles 422 at multiple points to clean the filter cloth 25 inside the washing chamber 41, improving the service life and performance of the filter cloth 25. Viewing windows 411 are provided on the other three sides of the washing chamber 41 for easy observation of the cleaning status of the filter cloth 25. A wastewater collection plate 412 arranged at an angle is provided at the bottom of the washing chamber 41, combined with... Figure 14 As shown, the wastewater collection plate 412 is bent at its center line, meaning the overall design is higher on the left and lower on the right, higher at the front and back, and lower in the middle. This design facilitates the collection of wastewater after washing. The right end (lowest end) of the wastewater collection plate 412 is connected to the drain outlet 413 for convenient wastewater discharge. The drain outlet 413 is located on the lower right side of the washing chamber 41 and is centrally located. Washing chamber support legs 43 are installed below the washing chamber 41 to facilitate the fixing of the washing device 4 and to raise the height of the washing chamber 41, making it easier for the filter cloth 25 to enter. The working process of the vertical filter press in the embodiment provided by this utility model is as follows:

[0106] When the equipment starts running, the piston rod 111 of the hydraulic cylinder 11 drives the pressing plate 16 to move downward, the filter plate assembly 2 closes, and the pipeline system 5 extracts air from the liquid guide tank 2217 through the vacuum port 2218, achieving a seal of the filter plate assembly 2 through vacuum suction. After the filter plate assembly 2 is sealed, the pipeline system 5 transports the slurry. The slurry enters the feed port 2212 and enters the feed chamber 2211 through the feed hole 2213, and is trapped above the filter cloth 25. Due to the small amount of pressure generated during the feeding process and the influence of gravity, a small amount of water is filtered out, achieving static pressure. The filter cake is initially formed by filtration. High-pressure air enters the feed chamber 2211 through the feed inlet 2212. Under pressure, a large amount of water is forced out of the filter cake, greatly reducing the moisture content. High-pressure air is continuously input, and it passes through the filter cake to carry away the remaining water particles, thus drying the filter cake. The filtered water passes through the filter cloth 25 and flows through the grid holes 2221 of the grid 222 into the filtrate chamber 2214. It is then guided by the guide boss 22141 into the filtrate hole 2216 and finally discharged from the filtrate outlet 2215. Alternatively, high-pressure hot air can be introduced to dry the filter cake.

[0107] After the above processes are completed, the hydraulic cylinder 11 drives the piston rod 111 to move upwards, and the connecting rod 24 connects to the hanging plate 226 to pull the top filter plate 21, the middle filter plate 221, and the bottom filter plate 23 to unfold in sequence. When unfolded, the filter cloth 25 drive device 227 starts, and the motor 2271 drives the filter cloth 25 to rotate counterclockwise by the drive roller 2273. The filter cake follows the rotation of the filter cloth 25 and falls into the hopper 3 under gravity, completing the material collection. At the same time as the filter cloth 25 rotates, the washing device 4 starts automatically. When the filter cloth 25 enters the washing chamber 41, the spray pipe 42 sprays high-pressure water to clean it. The wastewater generated during washing flows into the wastewater collection plate 412 and finally flows into the drain outlet 413 for discharge. In addition, the washing chamber 41 has a viewing window to facilitate monitoring the cleaning status of the filter cloth 25. Under normal settings, when the filter cloth 25 has traveled the length of one filter cake, the vertical filter press will automatically stop, completing one filtration cycle.

[0108] Of course, the above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model and should be protected by the present utility model.

Claims

1. A vertical filter press, characterized in that, The filter press comprises a frame, a filter plate group, a washing device and a hopper. The frame comprises a stand, a cylinder, a cylinder seat, a pressing plate, a stop plate and a guide rod. The two vertical and symmetrical stands are arranged in the middle of the frame, the upper part of the stand is connected with the cylinder seat, the cylinder is vertically arranged in the middle of the cylinder seat, the piston rod of the cylinder can be extended downward and is connected with the pressing plate, the lower part of the stand is connected with the stop plate, and a plurality of guide rods are symmetrically arranged above the stop plate. The filter plate group comprises a top filter plate, a middle filter plate, a bottom filter plate and a connecting rod. The top filter plate is arranged at the uppermost position of the filter plate group, the upper surface of the top filter plate is connected with the pressing plate, the middle filter plate is arranged below the top filter plate, the bottom filter plate is arranged below the middle filter plate, the lower surface of the bottom filter plate is connected with the upper surface of the stop plate, and the top filter plate and the middle filter plate are connected through the connecting rod. The hopper is arranged on one side of the frame, and the washing device is arranged on the other side of the frame.

2. A vertical filter press according to claim 1, characterised in that The middle filter plate comprises a middle filter plate body and filter cloth. The upper part of the middle filter plate body is provided with a filtrate cavity, a plurality of flow guide bosses are uniformly arranged on the filtrate cavity, a grid is arranged in the filtrate cavity, the lower surface of the grid is in contact with the flow guide bosses, and the upper surface of the grid is flush with the upper surface of the middle filter plate body. A liquid guide groove is further arranged on the upper part of the middle filter plate body and is distributed along the outer edge of the filtrate cavity. A feeding cavity is arranged on the lower part of the middle filter plate body. Two hanging plates are arranged on the front and rear sides of the middle filter plate body respectively. A vacuum suction port is arranged in the middle of the rear side of the middle filter plate body, the vacuum suction port is connected with the liquid guide groove through a liquid guide hole, a filtrate port is symmetrically arranged on the two sides of the vacuum suction port, the filtrate port is arranged inside the hanging plate, and the filtrate port is connected with the filtrate cavity through a filtrate hole. A feeding port is arranged on the front side of the middle filter plate body, the feeding port is arranged opposite to the filtrate port, and the feeding port is connected with the feeding cavity through a feeding hole. A left support is connected with the left side of the middle filter plate body, and a driving device is arranged on the left support. A right support is connected with the right side of the middle filter plate body, and a tensioning device is arranged on the right support. A guide roller is arranged on the upper middle part of the left support and the upper middle part of the right support, filter cloth is arranged above the guide roller and the grid, the filter cloth is connected at the head and tail, one side of the inner wall of the filter cloth is connected with the driving device, and the other side of the inner wall of the filter cloth is connected with the tensioning device.

3. A vertical filter press according to claim 2, characterised in that The driving device comprises a driving roller, a speed reducer and a motor. The motor is connected with the driving roller through the speed reducer, and the driving roller is connected with the filter cloth.

4. A vertical filter press according to claim 2, characterised in that A rectangular groove is arranged on the right support, the rectangular groove is matched with the tensioning device, and the tensioning device comprises a pressing plate, a tensioning screw, a round nut, a sliding block bearing and a tensioning roller. The end of the right support is connected with the pressing plate, the pressing plate is connected with the tensioning screw, the right end of the tensioning screw is provided with a square head, the left end of the tensioning screw is connected with the sliding block bearing through the round nut, the sliding block bearing can move leftward and rightward along the rectangular groove, and the end of the tensioning roller is connected with the middle position of the sliding block bearing.

5. A vertical filter press according to claim 2, wherein The hanging plate is provided with a first small hole, a second small hole and a third small hole, wherein the second small hole is arranged in the middle of the hanging plate and is connected with the guide rod. The first small hole and the third small hole are symmetrically arranged on both sides of the second small hole, and a connecting rod is arranged in the first small hole and the second small hole.

6. A vertical filter press according to claim 2, wherein, The width of the filter cloth is greater than the width of the material cavity and the filtrate cavity, and is less than or equal to the length of the guide roller.

7. A vertical filter press according to claim 3, wherein The middle filter plate body and the filter cloth are provided with multiple groups, wherein the middle filter plate bodies are arranged in sequence along the vertical direction, and the filter cloth is arranged between two adjacent groups of middle filter plate bodies. The motors of two groups of adjacent middle filter plate bodies are symmetrically arranged on the opposite sides.

8. A vertical filter press according to claim 1, characterized in that The hopper comprises a hopper body and a material blocking plate. The top of the hopper body is open, and the bottom of the hopper body is flush with the bottom of the rack. The top of the hopper body is connected with the material blocking plate, the outer contour of the material blocking plate is in the shape of "U", and the material blocking plate is higher than the upper edge of the filter plate group.

9. A vertical filter press according to claim 1, wherein, The washing device comprises a washing chamber and a spraying pipe. The bottom of the washing chamber is provided with a washing chamber leg, and the bottom of the washing chamber leg is flush with the bottom of the rack. The side of the washing chamber is open on one side, and the other three sides are provided with windows, and the opening is arranged on the side close to the filter plate group. The lower part of the washing chamber is provided with a sewage collecting plate arranged in an inclined manner, and the middle line of the sewage collecting plate is in a bent state, the lowest end of the sewage collecting plate is communicated with a sewage outlet, the sewage outlet is located below the right side of the washing chamber and is arranged in the center. The spraying pipe is arranged in the washing chamber.

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