filter press

Abstract

A filter press includes a flow plate, a filter cloth, and filter plates. The flow plate includes a filter frame with a filter cavity for accommodating filter cake formed on its inner side. An inlet hole is provided on the inner wall of the filter frame, penetrating the frame and used to introduce the liquid to be separated into the filter cavity. The filter cloth is draped over the filter frame and is sealed to the edges of the first and second sides of the filter frame. The filter cloth covers the filter cavity to intercept solid particles in the liquid to be separated and allows the filtrate to be discharged through the filter cloth to the outside of the filter frame. Filter plates and the flow plate are arranged alternately. The filter plates apply pressure to adjacent flow plates, forming sealed filter chambers between the filter cloth and the filter frame, and between adjacent filter plates. Each filter plate has a filtrate chamber inside. A guide channel communicating with the filter chamber is provided on the inner wall of the filtrate chamber, allowing the filtrate to be introduced from the filter chamber into the filtrate chamber. A drain channel communicating with a drain valve is also provided on the inner wall of the filtrate chamber, allowing the filtrate to be discharged to the outside of the filter press through the drain channel.

Description

Technical Field

[0001] This application belongs to the field of solid-liquid separation technology, specifically relating to a filter press. Background Technology

[0002] As a core component of filter presses for solid-liquid separation, the assembly precision of the filter cloth with the filter frame and filter plate directly affects filtration efficiency and equipment stability. In traditional filter press structures, the filter cloth needs to have holes of specific shapes (such as central inlet holes, corner positioning holes, or drain holes) cut according to the positions of the inlet holes and filtrate guide channels of the filter frame to ensure the flow of fluid. However, this type of perforation process has significant processing cost and efficiency bottlenecks. Utility Model Content

[0003] In view of this, this application provides a filter press that allows filter cloth to be easily cut and installed, reducing filter cloth processing costs and improving assembly efficiency.

[0004] To achieve the above objectives, this application mainly provides the following technical solutions:

[0005] This application provides a filter press, comprising:

[0006] A flow plate, comprising a filter frame, wherein a filter cavity for accommodating filter cake is formed on the inner side of the filter frame, and an inlet hole is provided on the inner wall of the filter frame, the inlet hole penetrating the filter frame, the inlet hole being used to introduce the liquid to be separated into the filter cavity;

[0007] A filter cloth is placed on the filter frame and is sealed to the edges of the first and second sides of the filter frame. The filter cloth is used to cover the filter cavity to intercept solid particles in the liquid to be separated and to allow the filtrate to be discharged through the filter cloth to the outside of the filter frame.

[0008] The filter plates are arranged alternately with the liquid flow plates. The filter plates are used to apply pressure to the adjacent liquid flow plates to form a sealed filter chamber between the filter cloth and the filter frame and between the adjacent filter plates.

[0009] The filter plate has a filtrate chamber inside, and the inner wall of the filtrate chamber has a flow channel that connects to the filter chamber. The flow channel is used to introduce the filtrate from the filter chamber into the filtrate chamber. The inner wall of the filtrate chamber also has a drain channel that connects to a drain valve. The drain valve is used to discharge the filtrate to the outside of the filter press through the drain channel.

[0010] Optionally, a first sealing ring is provided at the edge of both the first and second surfaces of the filter frame;

[0011] The filter plate is provided with a second sealing ring at the edges of both sides of the first and second sides of the filter frame.

[0012] Optionally, the first sealing ring is used to form a first-level sealing structure, and the second sealing ring is used to form a second-level sealing structure.

[0013] Optionally, the filter plate has guide grooves on both sides of the first and second surfaces of the filter frame;

[0014] A flow guide groove is formed between the bottom of the flow guide groove and the filter cloth. The bottom of the flow guide groove is provided with the flow guide channel. The inlet end of the flow guide channel is connected to the flow guide groove, and the outlet end is connected to the filtrate chamber.

[0015] Optionally, the bottom of the flow channel is provided with a plurality of support columns, which are used to support the filter cloth.

[0016] Optionally, the filter press further includes:

[0017] A frame is provided with a pressing guide rail extending along the stacking direction of the liquid flow plate and the filter plate, and the filter plate is slidably disposed on the pressing guide rail;

[0018] A pressing device is provided on the frame and is used to apply pressure to the filter plate to achieve sealing and pressing between the filter plate and the liquid flow plate.

[0019] Optionally, the clamping device includes:

[0020] A fixed end panel is disposed at one end of the clamping guide rail and is used to provide a positioning reference for the filter plate.

[0021] A movable end panel is disposed at the other end of the clamping guide rail and is used to abut against the filter plate;

[0022] A pressing drive unit is disposed on the frame. The output end of the pressing drive unit is connected to the movable end panel for driving the movable end panel to reciprocate along the pressing guide rail to press or release the filter plate and the liquid flow plate.

[0023] Optionally, the filter press further includes:

[0024] The moving device is provided on the frame and a slide rail parallel to the filter plate. The moving device is slidably mounted on the slide rail. The liquid flow plate is connected to the moving device. The moving device is used to drive the liquid flow plate to reciprocate along the slide rail so as to move out from the side of the filter plate or move into the space between two adjacent filter plates.

[0025] Optionally, the mobile device includes:

[0026] A slide is slidably mounted on a slide rail, and a movable guide rail parallel to the pressing guide rail is provided on the slide. The liquid flow plate is slidably mounted on the movable guide rail for adjusting the relative position of the liquid flow plate and the filter plate.

[0027] A mobile drive unit is mounted on the frame, and its output end is connected to the slide to drive the slide to reciprocate along the slide rail, thereby driving the fluid plate to move synchronously.

[0028] Optionally, the filter press further includes:

[0029] An inlet pipe is provided on the slide, and the inlet pipe is connected to the inlet hole through a connecting hose. An inlet valve is provided on the connecting hose.

[0030] By employing the above technical solution, this application has at least the following beneficial effects:

[0031] The filter press provided in the embodiments of this application has an inlet hole directly opened on the inner wall of the filter frame. The filter cloth is sealed with the edges of the first and second sides of the filter frame. At the same time, the filter plate squeezes the adjacent liquid flow plate to form a double sealing structure. This allows the filter cloth to be simply cut to cover the filter frame without the need to make customized holes for the inlet hole or other positions to complete the adaptation and installation. This significantly reduces the processing cost of the filter cloth and shortens the assembly time. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of a filter press according to an optional embodiment of this application;

[0033] Figure 2 This is a schematic diagram of the structure of a fluid flow plate according to an optional embodiment of this application;

[0034] Figure 3 This is a schematic diagram of the filter cloth structure of an optional embodiment of this application;

[0035] Figure 4 This is a schematic diagram of the filter plate in one optional embodiment of this application.

[0036] The reference numerals in the attached figures are as follows:

[0037] 1. Liquid flow plate; 11. Filter frame; 12. Filter chamber; 13. Liquid inlet hole; 14. First sealing ring; 2. Filter cloth; 3. Filter plate; 31. Flow guide channel; 32. Second sealing ring; 33. Flow guide groove; 34. Support column; 4. Frame; 5. Pressing guide rail; 6. Pressing device; 61. Fixed end panel; 62. Movable end panel; 63. Pressing drive unit; 7. Moving device; 71. Slide frame; 72. Moving guide rail; 73. Moving drive unit; 8. Slide rail; 9. Liquid inlet pipe; 10. Connecting hose. Detailed Implementation

[0038] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0040] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0041] The preferred embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0042] See also Figures 1 to 4As shown, according to an embodiment of this application, a filter press is provided, including a flow plate 1, a filter cloth 2, and a filter plate 3; the flow plate 1 includes a filter frame 11, and a filter cavity 12 for accommodating filter cake is formed on the inner side of the filter frame 11. An inlet hole 13 is provided on the inner wall of the filter frame 11, penetrating the filter frame 11, and is used to introduce the liquid to be separated into the filter cavity 12; the filter cloth 2 is draped on the filter frame 11, and the filter cloth 2 is sealed to the edges of the first and second surfaces of the filter frame 11. The filter cloth 2 is used to cover the filter cavity 12 to intercept solid particles in the liquid to be separated, and The filtrate is discharged through the filter cloth 2 to the outside of the filter frame 11; the filter plate 3 and the liquid flow plate 1 are arranged alternately, and the filter plate 3 is used to apply pressure to the adjacent liquid flow plate 1, so that the filter cloth 2 and the filter frame 11 and the adjacent filter plate 3 form a sealed filter chamber; wherein, the filter plate 3 has a filtrate chamber inside, and the inner wall of the filtrate chamber has a guide channel 31 that connects to the filter chamber. The guide channel 31 is used to introduce the filtrate from the filter chamber into the filtrate chamber. The inner wall of the filtrate chamber also has a drain channel that connects to the drain valve. The drain valve is used to discharge the filtrate to the outside of the filter press through the drain channel.

[0043] In the filter press provided in this embodiment, the inlet hole 13 is directly opened on the inner wall of the filter frame 11. The filter cloth 2 forms a double sealing structure by sealing with the edges of the first and second sides of the filter frame 11 and by combining with the squeezing action of the filter plate 3 on the adjacent liquid flow plate 1. This allows the filter cloth 2 to be simply cut to cover the filter frame 11 without the need to make customized holes for the inlet hole 13 and other positions, thus significantly reducing the processing cost of the filter cloth 2 and shortening the assembly time.

[0044] The filter frame 11 is arranged vertically, and the hollow area inside the filter frame 11 forms a filter cavity 12. The filter cavity 12 is used to contain the filter cake formed during the filtration process. The filter cake is a solid particle accumulation.

[0045] The liquid inlet 13 is located at the top of the filter frame 11 and extends through the filter frame 11 along its thickness direction. Its function is to introduce the liquid to be separated into the filter chamber 12. The liquid to be separated is a solid-liquid mixture.

[0046] In this embodiment, the filter cloth 2 is hung on the vertically arranged filter frame 11, with its two free ends hanging down and lying flat on the two surfaces of the filter frame 11, namely the first surface and the second surface. Its edges are sealed to the filter frame 11 by means of pressure strips, adhesives, or mechanical pressing. In this embodiment, the filter cloth 2 serves as a filtration medium, which can intercept solid particles in the liquid to be separated, while allowing the filtrate to be discharged through its pores. Since the filter cloth 2 only needs to cover the edges of the filter frame 11 and does not need to have holes in the center or at specific locations, it can be formed simply by cutting.

[0047] In this design, filter plates 3 and liquid flow plates 1 are arranged alternately to form a stacked structure of "filter plate 3-liquid flow plate 1-filter plate 3". In this embodiment, adjacent filter plates 3 can be mechanically pressed together to compress the liquid flow plate 1 between them, thus forming a sealed filter chamber between the filter cloth 2 and the filter frame 11, and between adjacent filter plates 3 and the liquid flow plate 1. In practical applications, the filtrate that has passed through the filter cloth 2 first enters the filter chamber, then is guided into the hollow filtrate chamber inside the filter plate 3 through the guide channel 31 on the inner wall of the filter plate 3, and finally discharged from the filtrate chamber to the outside of the filter press through the connected drain valve.

[0048] Specifically, during the liquid inlet stage, the liquid to be separated enters the filter chamber 12 through the liquid inlet hole 13 and is evenly distributed in the area covered by the filter cloth 2. During the solid-liquid separation stage, the filtrate passes through the filter cloth 2 under pressure, and solid particles are intercepted and gradually accumulate in the filter chamber 12 to form a filter cake. During the filtrate discharge stage, after passing through the filter cloth 2, the filtrate enters the filtrate chamber of the filter plate 3 through the guide channel 31, and is then discharged outside the machine through the discharge channel and discharge valve. It can be understood that during this process, the sealing fit between the filter cloth 2 and the edge of the filter frame 11 can prevent the liquid to be separated from leaking from the edge of the filter frame 11 during the liquid inlet stage. The filter plate 3 applies pressure to the adjacent liquid flow plate 1, so that the filter cloth 2 and the filter frame 11, and the filter plate 3 and the liquid flow plate 1, form a tight contact, further enhancing the sealing effect and ensuring that the filtrate can only be discharged through the preset guide channel 31.

[0049] In some possible implementations disclosed in this application, see [link to relevant documentation]. Figure 2 and Figure 4 As shown, a first sealing ring 14 is provided at the edge of the first and second surfaces of the filter frame 11; a second sealing ring 32 is provided at the edge of the two sides of the filter plate 3 relative to the first and second surfaces of the filter frame 11.

[0050] In this embodiment, the edges of the filter frame 11 and the filter cloth 2 are sealed by the first sealing ring 14, and the side of the filter plate 3 that contacts the liquid flow plate 1 (filter frame 11) is sealed by the second sealing ring 32, forming a double-layer physical barrier between the filter frame 11, the filter cloth 2 and the filter plate 3. This ensures that the liquid to be separated enters the filter chamber 12 only through the liquid inlet hole 13, and the filtrate is discharged only through the pores of the filter cloth 2 and the flow channel 31 of the filter plate 3, thus avoiding a decrease in filtration efficiency caused by liquid "short circuit" or leakage.

[0051] Here, liquid "short circuit" refers to the phenomenon where the liquid or filtrate to be separated does not flow along the preset normal path, but bypasses the area where filter cloth 2 is located or the area where the first sealing ring 14 and the second sealing ring 32 are located, forming an unexpected shortcut channel, resulting in a significant decrease in filtration effect.

[0052] In the filter press, the liquid flow plate 1 and filter plate 3 are arranged alternately to form a multi-layer stacked structure of "filter plate 3-liquid flow plate 1-filter plate 3". Each filter frame 11 has two parallel main surfaces, namely a first surface and a second surface. The first surface and the second surface are respectively attached to two adjacent filter plates 3. The two side edges of the filter plate 3 correspond to the edges of the first surface and the second surface of the filter frame 11, that is, the surface edges of the filter plate 3 that are attached to the filter frame 11 correspond to the edges of the first surface and the second surface of the filter frame 11.

[0053] The first sealing ring 14 is installed on the edges of the first and second surfaces of the filter frame 11, that is, the outer periphery of the filter frame 11.

[0054] The second sealing ring 32 is installed on the edges of the two sides of the filter plate 3, that is, the outer periphery of the contact surface between the filter plate 3 and the filter frame 11. The two are in one-to-one correspondence. When the filter plate 3 and the filter frame 11 are pressed together, the first sealing ring 14 and the second sealing ring 32 are pressed and adhered to each other at the edges to form a sealing interface.

[0055] In the above embodiments, the first sealing ring 14 is used to form a first-level sealing structure, and the second sealing ring 32 is used to form a second-level sealing structure.

[0056] Here, the first sealing ring 14 between the filter frame 11 and the filter cloth 2 forms the first line of defense against leakage, preventing the liquid to be separated from leaking from the edge of the filter frame 11 to the outside of the filter chamber during the liquid inlet stage. The second sealing ring 32 between the filter plate 3 and the filter frame 11 forms the second line of defense against leakage, preventing the filtrate from leaking from the gap at the contact surface between the filter plate 3 and the filter frame 11 to the outside of the filter press under the high pressure inside the filter chamber.

[0057] In some specific examples, when both the first sealing ring 14 and the second sealing ring 32 are circular, the outer diameter of the second sealing ring 32 is larger than the outer diameter of the first sealing ring 14 to ensure that the first-level sealing structure and the second-level sealing structure form a concentric circle layout; in other specific examples, when both the first sealing ring 14 and the second sealing ring 32 are rectangular, the outer contour of the second sealing ring 32 completely covers the outer contour of the first sealing ring 14 to form a nested sealing structure.

[0058] In some possible implementations disclosed in this application, see [link to relevant documentation]. Figure 4 As shown, the filter plate 3 has guide grooves 33 on both sides of the first and second sides relative to the filter frame 11; a guide channel 31 is formed between the bottom of the guide groove 33 and the filter cloth 2, and a guide channel 31 is formed at the bottom of the guide channel 33. The inlet end of the guide channel 31 is connected to the guide groove 33, and the outlet end is connected to the filtrate chamber.

[0059] In this embodiment, the guide groove 33 is directly formed on the contact surface between the filter plate 3 and the filter cloth 2, allowing the filtrate passing through the filter cloth 2 to immediately enter the guide groove without having to meander in the filter chamber, thus significantly reducing flow resistance. At the same time, the high-speed flow of the filtrate in the guide groove can wash the surface of the filter cloth 2, further preventing filter cake accumulation and extending the replacement cycle of the filter cloth 2.

[0060] The guide grooves 33 are formed on the side of the contact surface between the filter plate 3 and the filter frame 11, and are usually distributed in a grid pattern, radial pattern, or parallel groove pattern. The groove depth is generally 2 to 5 mm, and the width is 3 to 10 mm. The specific dimensions depend on the filtration pressure and filtrate flow rate.

[0061] The flow channel is formed by the gap between the bottom of the flow channel 33 and the surface of the filter cloth 2, typically 0.5–2 mm. When the filter cloth 2 is in close contact with the filter plate 3, the flow channel 33 is closed, forming a fluid channel.

[0062] The guide channel 31 is a small hole or a long strip-shaped through structure opened at the bottom of the guide channel. The inlet end is connected to the guide channel, and the outlet end leads to the filtrate chamber inside the filter plate 3.

[0063] The filtrate chamber is a hollow area inside the filter plate 3, which is used to collect the filtrate discharged from all the guide channels 31 and transport it to the drain valve through the drain channel.

[0064] Specifically, in the filtration stage, after the liquid to be separated enters the filter chamber 12, solid particles are intercepted by the filter cloth 2 to form a filter cake, and the filtrate passes through the filter cloth 2 into the guide channel. During the guide stage, the filtrate flows along the channel direction within the guide channel. Because the bottom of the guide channel 33 is lower than the surface of the filter plate 3, the filtrate preferentially enters the low-pressure guide channel rather than diffuses at the contact surface between the filter cloth 2 and the filter plate 3. In the collection stage, the filtrate in the guide channel enters the filtrate chamber through the guide channel 31. The guide channel 31 ensures that the filtrate can quickly detach from the surface of the filter cloth 2, reducing the resistance of the filter cake layer. In the discharge stage, after the filtrate collects in the filtrate chamber, it is discharged from the filter press through the discharge channel and discharge valve.

[0065] In the above embodiments, see Figure 4 As shown, multiple support columns 34 are evenly distributed at the bottom of the flow channel 33, and the support columns 34 are used to support the filter cloth 2.

[0066] Here, multiple support columns 34 are evenly distributed in the guide groove 33, which can support the filter cloth 2 and maintain the gap with the bottom of the groove, so as to prevent the filter cloth 2 from sticking to the bottom of the groove due to excessive pressure, which would cause the guide groove to become blocked.

[0067] The support column 34 can be cylindrical or square, etc., and this application does not limit it.

[0068] Specifically, in practical applications, the support column 34 can divide the guide channel into multiple microchannels, so that the filtrate forms a uniform laminar flow state and effectively reduces turbulent loss.

[0069] In some possible implementations disclosed in this application, see [link to relevant documentation]. Figure 1 As shown, the filter press also includes a frame 4 and a pressing device 6; the frame 4 is provided with a pressing guide rail 5 extending along the stacking direction of the liquid flow plate 1 and the filter plate 3, and the filter plate 3 is slidably disposed on the pressing guide rail 5; the pressing device 6 is disposed on the frame 4, and the pressing device 6 is used to apply pressure to the filter plate 3 to achieve sealing and pressing between the filter plate 3 and the liquid flow plate 1.

[0070] The frame 4 serves as the basic support structure of the filter press, providing a stable framework for the operation of the entire equipment. In this embodiment, a clamping guide rail 5 is installed on the frame 4, extending along the stacking direction of the liquid flow plate 1 and the filter plate 3. The filter plate 3 is mounted on the clamping guide rail 5, which provides a sliding path for the filter plate 3, allowing it to move smoothly along the stacking direction of the liquid flow plate 1 and the filter plate 3 on the frame 4, thus laying the foundation for subsequent clamping operations.

[0071] Specifically, when filtration is required, the filter plates 3 can move along the pressing guide rail 5 and approach each other under the action of the pressing device 6, thereby squeezing the adjacent liquid flow plates 1. This not only facilitates the installation and disassembly of the liquid flow plates 1, but also ensures that the filter plates 3 can be accurately aligned with the liquid flow plates 1 during the pressing process, guaranteeing the sealing effect and filtration efficiency.

[0072] The pressing device 6 is also mounted on the frame 4, and its main function is to apply pressure to the filter plates 3. During filter press operation, the pressing device 6 pushes the filter plates 3 along the pressing guide rail 5, ensuring tight contact between adjacent filter plates 3 and between the filter plates 3 and the liquid flow plate 1. This method achieves sealing and pressing between the filter cloth 2 and the filter frame 11, as well as between adjacent filter plates 3, thus forming a sealed filter chamber. During filtration, the sealed filter chamber ensures that the liquid to be separated can only enter the filter chamber 12 through the inlet hole 13, and the filtrate can only be discharged through the pre-set guide channel 31, avoiding liquid leakage and "short circuit" phenomena, and improving the filtration efficiency and separation effect of the filter press.

[0073] Specifically, in this embodiment, the frame 4 of the filter press adopts a structure of two opposing vertical plates, which are parallel to each other and perpendicular to the ground. Between the two vertical plates, two parallel pressing guide rails 5 are arranged horizontally, with their axes aligned with the stacking direction of the liquid flow plate 1 and the filter plate 3. The pressing device 6 uses a hydraulic cylinder, which is fixedly installed on the inner side of one of the vertical plates, with its piston rod axis parallel to the direction of the pressing guide rail 5. When the hydraulic cylinder operates, the extension and retraction of the piston rod pushes the connected filter plate 3 to move on the pressing guide rail 5. By controlling the pressure and stroke of the hydraulic cylinder, the pressing force between the filter plates 3 can be precisely adjusted, thereby ensuring a reliable seal between the filter cloth 2 and the filter frame 11, as well as between adjacent filter plates 3.

[0074] In the above embodiments, see Figure 1 As shown, the clamping device 6 includes a fixed end panel 61, a movable end panel 62, and a clamping drive unit 63. The fixed end panel 61 is disposed at one end of the clamping guide rail 5 and is used to provide a positioning reference for the filter plate 3. The movable end panel 62 is disposed at the other end of the clamping guide rail 5 and is used to abut against the filter plate 3. The clamping drive unit 63 is disposed on the frame 4, and the output end of the clamping drive unit 63 is connected to the movable end panel 62 for driving the movable end panel 62 to reciprocate along the clamping guide rail 5 to clamp or loosen the filter plate 3 and the liquid flow plate 1.

[0075] The fixed end panel 61 is used to provide a fixed support surface.

[0076] Specifically, in the initial state, the movable end panel 62 is located at the far limit position of the clamping guide rail 5, forming the maximum gap with the fixed end panel 61. At this time, the filter plate 3 and the liquid flow plate 1 are in a free state, facilitating maintenance operations such as installing or removing the filter cloth 2 and cleaning the filter chamber 12. During the clamping process, taking a hydraulic cylinder as an example, hydraulic oil pushes the piston rod to extend, causing the movable end panel 62 to move along the clamping guide rail 5 towards the fixed end panel 61. The movable end panel 62 first abuts against the outermost filter plate 3, pushing it to move towards the fixed end panel 61, sequentially compressing the adjacent "filter plate 3-liquid flow plate 1-filter plate 3" stacked structure.

[0077] In some possible implementations disclosed in this application, see [link to relevant documentation]. Figure 1 As shown, the filter press also includes a moving device 7; a slide rail 8 parallel to the filter plate 3 is also provided on the frame 4, the moving device 7 is slidably disposed on the slide rail 8, the liquid flow plate 1 is connected to the moving device 7, the moving device 7 is used to drive the liquid flow plate 1 to move back and forth along the slide rail 8, so as to move out from the side of the filter plate 3 or move into the space between two adjacent filter plates 3.

[0078] Understandably, traditional filter presses require the removal of each filter plate 3 before the filter cloth 2 can be replaced. However, in this embodiment, the liquid flow plate 1 is moved laterally by the moving device 7, so that the maintenance space of the filter cloth 2 is fully exposed, saving the cloth replacement time and improving the maintenance efficiency of the filter press.

[0079] When the frame 4 of the filter press adopts a structure of two vertical plates arranged opposite each other, the slide rail 8 is set on the top of the vertical plate, parallel to the plane of the filter plate 3, and perpendicular to the stacking direction of the liquid flow plate 1 and the filter plate 3.

[0080] The moving device 7 can be connected to the slide rail 8 via components such as rollers and sliders to achieve reciprocating movement along the slide rail 8.

[0081] The fluid plate 1 can be connected to the moving device 7 through mechanical structures such as brackets and bolts to ensure that the fluid plate 1 moves synchronously with the moving device 7 when it moves.

[0082] Specifically, the process of removing the flow plate 1 is as follows: After the filter press completes filtration, the clamping device 6 is released, and the stacking structure of the filter plate 3 and the flow plate 1 is in a relaxed state; the moving device 7 is activated and moves along the slide rail 8 to the outside of the frame 4; the flow plate 1 moves synchronously with the moving device 7, gradually moving away from the position between adjacent filter plates 3 until it is completely exposed outside the two adjacent filter plates 3. The process of moving the flow plate 1 in is as follows: After the cloth replacement or maintenance is completed, the moving device 7 moves in the opposite direction, driving the flow plate 1 to move along the slide rail 8 between the two adjacent filter plates 3; the clamping device 6 is activated, pushing the filter plates 3 to squeeze the flow plate 1, entering the filtration stage.

[0083] In the above embodiments, see Figure 1 As shown, the moving device 7 includes a slide 71 and a moving drive unit 73; the slide 71 is slidably mounted on the slide rail 8, and a moving guide rail 72 parallel to the pressing guide rail 5 is provided on the slide 71. The liquid flow plate 1 is slidably mounted on the moving guide rail 72 for adjusting the relative position of the liquid flow plate 1 and the filter plate 3; the moving drive unit 73 is mounted on the frame 4, and the output end of the moving drive unit 73 is connected to the slide 71 for driving the slide 71 to reciprocate along the slide rail 8 so as to drive the liquid flow plate 1 to move synchronously.

[0084] When the frame 4 adopts a structure of two vertical plates arranged opposite each other, the carriage 71 can adopt a corresponding structure of two vertical plates. Specifically, the two vertical plates that make up the carriage 71 correspond one-to-one with the two vertical plates of the frame 4, and each vertical plate of the carriage 71 is slidably connected to the corresponding vertical plate of the frame 4 through the slide rail 8, so as to realize the movement of the carriage 71 in a direction parallel to the plane of the filter plate 3.

[0085] Specifically, the two vertical plates constituting the slide 71 can be mounted one-to-one on the slide rails 8 at the top of the two vertical plates constituting the frame 4 via rollers or sliders. In this embodiment, the movement of the slide 71 along the slide rails 8 is driven by the movement drive unit 73. For each of the two vertical plates constituting the slide 71, a hydraulic cylinder is installed one-to-one at the top of the two vertical plates constituting the frame 4, serving as the movement drive unit 73. The output end of the hydraulic cylinder is connected to the corresponding vertical plate of the slide 71, and the slide 71 is driven to reciprocate along the slide rails 8 by the extension and retraction of the hydraulic cylinder piston rod, thereby driving the fluid plate 1 to move synchronously.

[0086] When the carriage 71 adopts a two-vertical-plate structure with the same configuration, two parallel moving guide rails 72 are arranged horizontally between the two vertical plates that make up the carriage 71. The axial direction of these two moving guide rails 72 is consistent with the axial direction of the pressing guide rail 5.

[0087] Specifically, the flow plate 1 is slidably mounted on the movable guide rail 72. In practical applications, the flow plate 1 can be finely adjusted along the direction of the pressing guide rail 5 via the movable guide rail 72 on the slide 71 to ensure that the flow plate 1 can move between two adjacent filter plates 3.

[0088] In some possible implementations disclosed in this application, see [link to relevant documentation]. Figure 1 As shown, the filter press also includes a liquid inlet pipe 9, which is mounted on the slide 71. The liquid inlet pipe 9 is connected to the liquid inlet hole 13 via a connecting hose 10, and a liquid inlet valve is provided on the connecting hose 10.

[0089] In this embodiment, the inlet pipe 9 is fixed on the slide 71. When the slide 71 moves along the slide rail 8, the inlet pipe 9 moves synchronously, and the connection with the flow plate 1 can be maintained without additional operation.

[0090] Among them, the liquid inlet pipe 9 is fixedly installed on the slide 71 and moves synchronously with the slide 71. Its function is to transport the liquid to be separated to each liquid flow plate 1.

[0091] Specifically, each flow plate 1 is equipped with a corresponding connecting hose 10. One end of the connecting hose 10 is connected to the inlet pipe 9, and the other end is connected to the inlet hole 13 of the flow plate 1. It is understood that the connecting hose 10 is flexible and can adapt to changes in the position of the flow plate 1 during fine-tuning. In practical applications, an inlet valve is installed on the connecting hose 10, which is used to control the inlet volume and opening / closing state of each individual flow plate 1.

[0092] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0093] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application. The above are merely preferred embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. A filter press, characterized in that include: A flow plate, comprising a filter frame, wherein a filter cavity for accommodating filter cake is formed on the inner side of the filter frame, and an inlet hole is provided on the inner wall of the filter frame, the inlet hole penetrating the filter frame, the inlet hole being used to introduce the liquid to be separated into the filter cavity; A filter cloth is placed on the filter frame and is sealed to the edges of the first and second sides of the filter frame. The filter cloth is used to cover the filter cavity to intercept solid particles in the liquid to be separated and to allow the filtrate to be discharged through the filter cloth to the outside of the filter frame. The filter plates are arranged alternately with the liquid flow plates. The filter plates are used to apply pressure to the adjacent liquid flow plates to form a sealed filter chamber between the filter cloth and the filter frame and between the adjacent filter plates. The filter plate has a filtrate chamber inside, and the inner wall of the filtrate chamber has a flow channel that connects to the filter chamber. The flow channel is used to introduce the filtrate from the filter chamber into the filtrate chamber. The inner wall of the filtrate chamber also has a drain channel that connects to a drain valve. The drain valve is used to discharge the filtrate to the outside of the filter press through the drain channel.

2. The filter press according to claim 1, characterized in that A first sealing ring is provided at the edge of both the first and second surfaces of the filter frame; The filter plate is provided with a second sealing ring at the edges of both sides of the first and second sides of the filter frame.

3. The filter press according to claim 2, characterized in that The first sealing ring is used to form a first-level sealing structure, and the second sealing ring is used to form a second-level sealing structure.

4. The filter press of claim 1, wherein, The filter plate has guide grooves on both sides of the first and second sides of the filter frame; A flow guide groove is formed between the bottom of the flow guide groove and the filter cloth. The bottom of the flow guide groove is provided with the flow guide channel. The inlet end of the flow guide channel is connected to the flow guide groove, and the outlet end is connected to the filtrate chamber.

5. The filter press of claim 4, wherein, The bottom of the flow channel is evenly distributed with multiple support columns, which are used to support the filter cloth.

6. The filter press of claim 1, wherein, Also includes: A frame is provided with a pressing guide rail extending along the stacking direction of the liquid flow plate and the filter plate, and the filter plate is slidably disposed on the pressing guide rail; A pressing device is provided on the frame and is used to apply pressure to the filter plate to achieve sealing and pressing between the filter plate and the liquid flow plate.

7. The filter press according to claim 6, characterized in that The clamping device includes: A fixed end panel is disposed at one end of the clamping guide rail and is used to provide a positioning reference for the filter plate. A movable end panel is disposed at the other end of the clamping guide rail and is used to abut against the filter plate; A pressing drive unit is disposed on the frame. The output end of the pressing drive unit is connected to the movable end panel for driving the movable end panel to reciprocate along the pressing guide rail to press or release the filter plate and the liquid flow plate.

8. The filter press of claim 6, wherein, Also includes: The moving device is provided on the frame and a slide rail parallel to the filter plate. The moving device is slidably mounted on the slide rail. The liquid flow plate is connected to the moving device. The moving device is used to drive the liquid flow plate to reciprocate along the slide rail so as to move out from the side of the filter plate or move into the space between two adjacent filter plates.

9. The filter press of claim 8, wherein, The mobile device includes: A slide is slidably mounted on a slide rail, and a movable guide rail parallel to the pressing guide rail is provided on the slide. The liquid flow plate is slidably mounted on the movable guide rail for adjusting the relative position of the liquid flow plate and the filter plate. A mobile drive unit is mounted on the frame, and its output end is connected to the slide to drive the slide to reciprocate along the slide rail, thereby driving the fluid plate to move synchronously.

10. The filter press of claim 9, wherein, Also includes: An inlet pipe is provided on the slide, and the inlet pipe is connected to the inlet hole through a connecting hose. An inlet valve is provided on the connecting hose.

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