Fabric clamp and chamber filter plate unit

Abstract

This application relates to the field of diaphragm filter press technology, specifically to a cloth clamping device and a chamber filter plate unit. The cloth clamping device is used to be installed on a chamber filter plate to clamp filter cloth on both sides of the chamber filter plate. The cloth clamping device includes a cloth clamping assembly, which includes a base, a guide shaft, an elastic reset member, and a cover plate. A boss feeding channel is formed inside the cloth clamping device, which communicates with the chamber filter plate feeding channel. A base feeding channel communicating with the boss feeding channel is formed on the base. The guide shaft is installed on the base through the elastic reset member. The cover plate is located outside the boss feeding channel and is fixedly connected to the guide shaft to cover the port of the base feeding channel by the elastic force of the elastic reset member. The purpose of this application is to provide a cloth clamping device and a chamber filter plate unit to address at least one technical problem involved in the prior art.

Description

Technical Field

[0001] This application relates to the field of diaphragm filter press technology, and more specifically, to a cloth clamp and a chamber filter plate unit. Background Technology

[0002] A cloth clamp is a fastener on a filter press that presses the filter cloth onto the filter plate. Installed at the feed hole of the filter plate, the clamp holds the filter cloth on both sides of the plate, creating a stable feed channel between adjacent filter cloths. Material enters the filter chamber from the center of the filter cloth, and under the pressure of the filter plate, further solid-liquid separation is achieved. Existing cloth clamps have the following drawbacks: During filter press operation, material enters the filter chamber through the channel in a central feeding manner, and the feed hole is always open. This can easily cause slurry overflow during pressing, affecting filtration efficiency. Utility Model Content

[0003] The purpose of this application is to provide a fabric clamp and a chamber filter plate unit to address at least one of the technical problems involved in the background art.

[0004] To achieve the above objectives, this application adopts the following technical solution:

[0005] One aspect of this application provides a cloth clamping device for mounting on a chamber filter plate to clamp filter cloth on both sides of the chamber filter plate. The cloth clamping device includes a cloth clamping assembly, which includes a base, a guide shaft, an elastic reset member, and a cover plate. A boss feeding channel is formed inside the cloth clamping device, which communicates with the chamber filter plate feeding channel. A base feeding channel communicating with the boss feeding channel is formed on the base. The guide shaft is mounted on the base via the elastic reset member. The cover plate is located outside the boss feeding channel and is fixedly connected to the guide shaft to cover the port of the base feeding channel by the elastic force of the elastic reset member.

[0006] Optionally, the elastic reset element is a pressure spring located in the feed channel of the boss, with a guide hole formed on the device seat. The guide shaft slides in the guide hole along the axial direction of the guide shaft, and the pressure spring is fitted onto the guide shaft. One end of the pressure spring abuts against the device seat, and the other end of the pressure spring is fixedly connected to the guide shaft.

[0007] The beneficial effects of this technical solution are as follows: if the pressure spring is placed outside the feed channel of the boss, the guide shaft must also be extended into the chamber, occupying the space inside the chamber, reducing the volume of the chamber, and reducing the efficiency of the filter press. If the pressure spring is placed inside the feed channel of the boss, the pressure spring and the guide shaft do not need to occupy the chamber aperture, thus reducing the adverse effects on the chamber volume and the filter press efficiency.

[0008] Optionally, the fabric clamping assembly further includes a retaining spring, which is fixed to the guide shaft and located outside the feed channel of the boss, and is used to abut against the base.

[0009] The beneficial effects of this technical solution are as follows: after feeding is completed, the slurry flow rate in the feed channel of the device seat decreases, and the pressure of the slurry on the inner side of the cover plate weakens. At this time, the pressure spring returns to its normal state, drives the guide shaft to move, and the guide shaft drives the cover plate to retract, so that the cover plate fits with the device seat and closes the feed channel of the device seat. At this time, the snap ring on the guide shaft abuts against the device seat to play a limiting role, which can prevent the cover plate of the cloth clamp from being damaged due to excessive force.

[0010] Optionally, a retaining ring groove is formed on the device base. The retaining ring groove is located on the side of the device base opposite to the feed channel of the boss. The retaining ring groove is coaxially arranged with the guide hole, and the retaining ring is used to be disposed in the retaining ring groove.

[0011] The beneficial effect of this technical solution is that, in this way, when the feed channel of the cover plate is closed, the retaining spring is located in the retaining spring groove, so that the retaining spring does not easily obstruct the fit between the cover plate and the base, and the cover plate can smoothly close the feed channel of the base.

[0012] Optionally, the axial direction of the guide shaft is parallel to the length direction of the feed channel of the device seat, and the axial direction of the guide shaft is perpendicular to the cover plate.

[0013] The beneficial effects of this technical solution are as follows: In this way, the direction of material feeding from the feed channel of the device seat into the chamber is perpendicular to the cover plate, so that the cover plate can directly block the material feeding, making it difficult for the material feeding to directly act on the diaphragm filter cloth, thereby reducing the damage of the material feeding to the diaphragm filter cloth and extending the service life of the diaphragm filter cloth.

[0014] Optionally, the fabric clamp provided in this application includes two fabric clamping assemblies, and the fabric clamping assembly further includes a connector, and the two clamping bases are detachably connected through the connector.

[0015] The beneficial effects of this technical solution are that it facilitates the disassembly and assembly of the cloth clamp and the chamber filter plate, thereby facilitating the replacement and maintenance of the cloth clamp.

[0016] Optionally, a plurality of feed channels are formed on the base, and the feed channels are evenly arranged in the circumferential direction of the guide shaft.

[0017] The beneficial effects of this technical solution are: multiple feed channels can improve feeding efficiency, and the uniform arrangement of feed channels can improve feeding stability.

[0018] Optionally, the fabric clamping assembly includes multiple connectors, each of which is located at a position corresponding to one of the two adjacent feed channels of the device seat.

[0019] The beneficial effect of this technical solution is that the two bases can be securely connected together through the connecting parts.

[0020] Another aspect of this application provides a chamber filter plate unit, including a chamber filter plate and a cloth clamp provided in the embodiments of this application. The cloth clamp is installed on the chamber filter plate and includes two clamp seats for fixing two chamber filter cloths one-to-one on two surfaces of the chamber filter plate.

[0021] Optionally, the axial direction of the guide shaft is parallel to the length direction of the feed channel of the chamber, and the axial direction of the guide shaft is perpendicular to the cover plate, and the cover plate is arranged parallel to the chamber filter plate.

[0022] The beneficial effects of this technical solution are as follows: that is, the cover plate is set parallel to the diaphragm filter cloth, and the material fed into the chamber from the feed channel of the device seat is blocked by the cover plate and cannot directly act on the diaphragm filter cloth, thereby reducing the damage to the diaphragm filter cloth and extending the service life of the diaphragm filter cloth.

[0023] The technical solution provided in this application can achieve at least one of the following beneficial effects:

[0024] The cloth clamp and chamber filter plate unit provided in this application include a cover plate, a feed channel for the filter chamber, and an elastic reset component. Through the synergistic action of these components, the cloth clamp achieves a one-way feeding function, making the filter press feeding more convenient and reducing the risk of slurry overflowing from the filter chamber through the feed channel during filter press operation due to the pressing action. Furthermore, in the prior art, the concentrated feed pressure of the cloth clamp during filtration causes slurry to spray out and directly hit the diaphragm filter plate opposite the feed hole, affecting the service life of the diaphragm filter cloth. The cloth clamp provided in this application has its feed path blocked and altered by the cover plate, making it difficult for the feed to directly act on the diaphragm filter cloth, effectively extending the service life of the diaphragm filter cloth. In addition, the one-way valve composed of the guide shaft and reset spring can close the feed channel after the chamber filter plate has finished feeding, preventing the slurry inside the chamber filter plate from flowing back out and achieving the function of unidirectional slurry passage.

[0025] The additional technical features and advantages of this application will become more apparent from the following description or from practical application. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the specific embodiments of this application, the accompanying drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 A partial cross-sectional structural schematic diagram of one embodiment of the chamber filter plate unit provided in this application;

[0028] Figure 2 A cross-sectional structural schematic diagram of one embodiment of the device holder provided in this application;

[0029] Figure 3 This is a top view of one embodiment of the device holder provided in this application.

[0030] Figure label:

[0031] 01. Chamber-type filter cloth; 02. Chamber-type filter plate;

[0032] 03. Support; 04. Feed channel of support;

[0033] 05. Snap ring; 06. Elastic return element;

[0034] 07. Guide shaft; 09. Cover plate;

[0035] 10. Connecting parts; 11. Feed channel for chamber filter plates;

[0036] 12. Fabric clamping assembly; 13. Boss feeding channel;

[0037] 14. Snap ring groove; 15. Guide hole. Detailed Implementation

[0038] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0039] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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 based on the specific circumstances.

[0041] like Figures 1 to 3 As shown, one aspect of this application provides a cloth clamping device for mounting on a chamber filter plate 02 to clamp a chamber filter cloth 01 on both sides of the chamber filter plate 02. The cloth clamping device includes a cloth clamping assembly 12, which includes a base 03, a guide shaft 07, an elastic reset member 06, and a cover plate 09. A boss feeding channel 13 is formed inside the cloth clamping device, which communicates with a chamber filter plate feeding channel 11. A base feeding channel 04 communicating with the boss feeding channel 13 is formed on the base 03. The guide shaft 07 is mounted on the base 03 via the elastic reset member 06. The cover plate 09 is located outside the boss feeding channel 13, and the cover plate 09 is fixedly connected to the guide shaft 07 to cover the port of the base feeding channel 04 by the elastic force of the elastic reset member 06.

[0042] In use, the cloth clamping device provided in this application feeds the filter chamber of the filter press. The slurry is fed from the chamber filter plate feed channel 11 to the feed boss feed channel 13. When the slurry reaches the base feed channel 04, the cover plate 09 is lifted by the slurry due to the feeding pressure. The cover plate 09 drives the guide shaft 07 to move, causing the elastic reset member 06 to further deform elastically. The slurry enters the chamber through the cloth clamping device base feed channel 04 to complete the feeding. After the feeding is completed, the slurry flow rate in the base feed channel 04 decreases, and the pressure of the slurry on the inner side of the cover plate 09 weakens. At this time, the elastic reset member 06 returns to its normal state and drives the guide shaft 07 to move. The guide shaft 07 drives the cover plate 09 to contract, so that the cover plate 09 fits against the base 03 and closes the base feed channel 04. When the filter press is finished feeding, a filter cake has been initially formed in the filter chamber and there is a certain pressure in the chamber. This pressure has an effect on all sides of the filter press chamber. Under the action of this pressure, the cover plate 09 is tightly fitted with the base 03, which can prevent the material in the filter chamber from being sucked away by the negative pressure and back into the feed box.

[0043] The cloth clamp provided in this application adds a cover plate 09, a feed channel 04, and an elastic reset component 06, etc. Through the synergistic action of these components, the cloth clamp achieves a one-way feeding function, making the filter press feeding more convenient and reducing the risk of slurry in the filter chamber overflowing through the feed channel 11 of the chamber filter plate due to the pressing action during filter press operation. Furthermore, in the existing technology, the concentrated feed pressure during the filtration process causes slurry to spray out and directly hit the diaphragm filter plate opposite the feed hole, affecting the service life of the diaphragm filter cloth. The feed path of the cloth clamp provided in this application is blocked and changed by the cover plate 09, making it difficult for the feed to directly act on the diaphragm filter cloth, effectively extending the service life of the diaphragm filter cloth. In addition, the one-way valve composed of the guide shaft 07 and the reset spring can close the feed channel 04 of the chamber filter plate 02 after the chamber filter plate 02 has finished feeding, preventing the slurry in the chamber filter plate 02 from flowing back and spraying out, thus achieving the function of unidirectional slurry passage.

[0044] Optionally, the elastic reset member 06 is a pressure spring located within the boss feed channel 13. A guide hole 15 is formed on the base 03. The guide shaft 07 slides in the guide hole 15 axially. The pressure spring is fitted onto the guide shaft 07, with one end abutting against the base 03 and the other end fixedly connected to the guide shaft 07. If the pressure spring is placed outside the boss feed channel 13, the guide shaft 07 must also extend into the chamber, occupying space within the chamber, reducing the chamber volume, and decreasing the filtration efficiency. By placing the pressure spring within the boss feed channel 13, the pressure spring and guide shaft 07 do not need to occupy the chamber aperture, reducing the adverse effects on the chamber volume and filtration efficiency.

[0045] Optionally, the fabric clamping assembly 12 further includes a retaining spring 05, which is fixed to the guide shaft 07 and located outside the feed channel 13 of the boss. The retaining spring 05 is used to abut against the base 03. After feeding is completed, the slurry flow rate in the feed channel 04 of the base decreases, and the pressure on the inner side of the cover plate 09 from the slurry weakens. At this time, the pressure spring returns to its normal state, driving the guide shaft 07 to move. The guide shaft 07 drives the cover plate 09 to retract, so that the cover plate 09 fits against the base 03, closing the feed channel 04 of the base. At this time, the retaining spring 05 on the guide shaft 07 abuts against the base 03 to play a limiting role, which can prevent the cover plate 09 of the fabric clamp from being damaged due to excessive force.

[0046] Optionally, a retaining spring groove 14 is formed on the base 03. The retaining spring groove 14 is located on the side of the base 03 opposite to the feed channel 13 of the boss. The retaining spring groove 14 is coaxially arranged with the guide hole 15, and the retaining spring 05 is used to be disposed in the retaining spring groove 14. In this way, when the base feed channel 04 is closed by the cover plate 09, the retaining spring 05 is located in the retaining spring groove 14, so that the retaining spring 05 does not easily obstruct the contact between the cover plate 09 and the base 03, and the cover plate 09 can smoothly close the base feed channel 04.

[0047] Optionally, the axial direction of the guide shaft 07 is parallel to the length direction of the feed channel 04 of the device seat, and the axial direction of the guide shaft 07 is perpendicular to the cover plate 09. In this way, the direction of material feeding from the feed channel 04 into the chamber is perpendicular to the cover plate 09, allowing the cover plate 09 to directly block the material feeding, making it less likely for the material to directly act on the diaphragm filter cloth, thereby reducing damage to the diaphragm filter cloth and extending its lifespan. Alternatively, the length direction of the feed channel 04 can be inclined relative to the axial direction of the guide shaft 07.

[0048] Optionally, the fabric clamp provided in this application embodiment includes two fabric clamping assemblies 12, each fabric clamping assembly 12 further including a connector 10, and the two device seats 03 are detachably connected through the connector 10. This facilitates the assembly and disassembly of the fabric clamp and the chamber filter plate 02, thereby facilitating the replacement and maintenance of the fabric clamp. In this application embodiment, the connector 10 is preferably a screw or bolt.

[0049] Optionally, a plurality of feed channels 04 are formed on the base 03, and the feed channels 04 are evenly arranged in the circumferential direction of the guide shaft 07. A plurality of feed channels 04 can improve feeding efficiency, and the even arrangement of the feed channels 04 can improve feeding stability. In this embodiment, 2 to 6 feed channels 04 can be provided on the base 03; preferably, 3 feed channels 04 are provided on the base 03.

[0050] Optionally, the fabric clamping assembly 12 includes a plurality of connectors 10, each connector 10 being located at a position corresponding to one of the two adjacent feed channels 04 of the device seats. In this way, the two device seats 03 can be securely connected together by the connectors 10.

[0051] Another aspect of this application provides a chamber filter plate unit, including a chamber filter plate 02 and a cloth clamp provided in the embodiments of this application. The cloth clamp is installed on the chamber filter plate 02 and includes two holders 03. The two holders 03 are used to fix two chamber filter cloths 01 one-to-one on the two plates of the chamber filter plate 02.

[0052] The chamber filter plate unit provided in this application adopts the cloth clamp provided in this application, and adds a cover plate 09, a feed channel 04 for the filter plate seat, and an elastic reset component 06, etc. Through the synergistic action of each component, the cloth clamp achieves the one-way feeding function of the cloth clamp, making the feeding of the filter press more convenient and reducing the risk of slurry in the filter chamber overflowing through the feed channel 11 of the chamber filter plate due to the pressing action during the operation of the filter press. In addition, the cloth clamp used in the prior art causes the slurry to spray out due to the concentrated feeding pressure during the filtration process, which will directly hit the diaphragm filter plate opposite the feed hole and affect the service life of the diaphragm filter cloth. The feeding path of the cloth clamp provided in this application is blocked and changed by the cover plate 09, making it difficult for the feeding to directly act on the diaphragm filter cloth, effectively extending the service life of the diaphragm filter cloth. In addition, the one-way valve composed of the guide shaft 07 and the reset spring can close the feed channel 04 of the filter plate seat after the chamber filter plate 02 has completed feeding, preventing the slurry in the chamber filter plate 02 from flowing back and spraying out, and playing the role of unidirectional passage of slurry.

[0053] Optionally, the axial direction of the guide shaft 07 is parallel to the length direction of the feed channel 04 of the chamber, and the axial direction of the guide shaft 07 is perpendicular to the cover plate 09, which is arranged parallel to the chamber filter plate 02. That is, the cover plate 09 is arranged parallel to the diaphragm filter cloth, and the material fed into the chamber from the feed channel 04 is blocked by the cover plate 09, preventing it from directly acting on the diaphragm filter cloth, thereby reducing damage to the diaphragm filter cloth and extending its service life.

[0054] To better illustrate the fabric clamp and chamber filter plate unit provided in this application, an application example of the fabric clamp and chamber filter plate unit is also provided, which is as follows:

[0055] A cloth clamp is a fastener on a filter press that presses the filter cloth onto the filter plate. Installed at the feed hole of the filter plate, the clamp holds the filter cloth on both sides of the plate, creating a stable feed channel between adjacent filter cloths. Material enters the filter chamber from the center of the filter cloth, and under the pressure of the filter plate, further solid-liquid separation is achieved. Existing cloth clamps have the following drawbacks: During filter press operation, material enters the filter chamber through the channel in a central feeding manner. With the feed hole open, pressing can easily cause slurry overflow, affecting filtration efficiency. During filtration, concentrated feed pressure causes slurry to spray out, directly impacting the diaphragm filter plate and affecting the service life of the diaphragm filter cloth. To solve the problems of traditional filter press cloth clamps, a one-way valve cloth clamp suitable for chamber filter plates (02) was designed through research and practice. The cloth clamp consists of two bases 03 connected by a guide shaft 07. The outer cover plate 09 is tightened with three fixing screws. Each base 03 is equipped with a feeding channel. When the cloth clamp is open, the cover plate 09 moves outward, and the material enters through the middle channel. After feeding is completed, the cloth clamp reset spring returns to its original position, and the cover plate 09 closes, realizing the one-way feeding function of the cloth clamp. This makes feeding the filter press more convenient, greatly improves operating efficiency, and extends the service life of the diaphragm filter cloth.

[0056] The technical problems to be solved in this application example are as follows: controlling the direction of slurry flow to prevent slurry from directly hitting the diaphragm filter plate during the feeding process of a traditional cloth clamp, which affects the service life of the diaphragm filter cloth. Also, to prevent slurry backflow and overflow after the traditional cloth clamp has finished feeding, which affects the filter press efficiency.

[0057] The specific technical solution for this application example is as follows:

[0058] This invention modifies the structure of the traditional filter press cloth clamp, adding a cover plate 09, a feed channel 04, and an elastic reset component 06. Through the coordinated action of these components, the cloth clamp achieves unidirectional feeding, making filter press feeding more convenient and reducing the risk of slurry overflow due to the pressing action during operation. The one-way valve, composed of the guide shaft 07 and the elastic reset component 06, closes the feed channel 04 after the chamber filter plate 02 has finished feeding, preventing slurry backflow and ensuring unidirectional slurry passage.

[0059] When this cloth clamp is installed, it is positioned by the groove on the chamber filter plate 02, and the cloth clamp and filter cloth are fixed to the chamber filter plate 02 by the connector 10, thereby achieving the function of fixing the filter cloth. When the filter press chamber is fed, the slurry is fed from the chamber filter plate feed channel 11 to the feed boss feed channel 13. When the slurry reaches the base feed channel 04, the cover plate 09 is lifted by the slurry due to the feeding pressure. The cover plate 09 drives the guide shaft 07 to move, which compresses the elastic reset member 06. The slurry then enters the chamber through the base feed channel 04 to complete the feeding. At this time, because the cover plate 09 is raised and drives the guide shaft 07 to move, the elastic reset member 06 is in a compressed state.

[0060] After feeding is completed, the slurry flow rate in the feed channel 04 of the filter press decreases, and the pressure on the inner side of the cover plate 09 from the slurry weakens. At this time, the elastic reset element 06 returns to its normal state, driving the guide shaft 07 to move. The guide shaft 07 causes the cover plate 09 to retract, making the cover plate 09 fit against the filter press 03, and the feed channel 04 of the filter press closes. At this time, the retaining spring 05 can limit the cover plate 09 to prevent it from being damaged by excessive force. When the filter press feeding is completed, a filter cake has been initially formed in the filter chamber, and there is a certain pressure in the chamber. This pressure has an effect on all sides of the filter press chamber. Due to the pressure, the cover plate 09 fits tightly against the filter press 03. When the feed valve is closed and the return valve is open, the cover plate 09 can prevent the material in the filter chamber from being sucked away by the negative pressure and returning to the feed box. When pressing begins, it can prevent the slurry from flowing into the feed box. At this time, the one-way valve of the cloth clamp completes the complete working process from the opening of the feed to the closing state after the filter press feeding is completed.

[0061] This application example not only has the function of fixing the filter cloth by the traditional cloth clamp, but also, due to the function of the one-way valve structure, the slurry can only flow through the cloth clamp into the filter press chamber through the feed channel 11 of the chamber filter plate, which makes the feeding of the filter press more convenient and the pressing process more stable.

[0062] In this application example, the cloth clamp is positioned by engaging with the groove on the chamber filter plate 02 via the base 03. The filter cloth is positioned between the base 03 and the chamber filter plate 02. The connector 10 secures the filter cloth and the cloth clamp to the chamber filter plate 02, making the filter cloth fixation more convenient and stable. A base feed channel 04 is provided on the cloth clamp base 03, which is connected to the chamber filter plate feed channel 11. The slurry can enter the chamber through the chamber filter plate feed channel 11 and the cloth clamp, ensuring stable feeding and improving the feed efficiency of the filter press. The cover plate 09, through the combined action of the guide shaft 07, connector 10, and elastic reset component 06, allows the base feed channel 04 to open promptly during filter press feeding. After feeding is completed, the elastic reset component 06 drives the cover plate 09 to close the base feed channel 04. This prevents the material in the filter chamber from being sucked away by negative pressure and returning to the feed box when the feed valve is closed and the return valve is opened after feeding is completed; it also prevents the pressed slurry from entering the feed box during the pressing process. This makes the filter press work more stably and efficiently.

[0063] Traditional filter presses use a cloth clamp consisting of a central sleeve and upper and lower pressure plates. The feed is clamped by the cloth clamp, which can easily cause material backflow and leakage during operation, leading to filter cloth wear. The cloth clamp in this application example, by incorporating a one-way valve, effectively prevents backflow and leakage of coal slime during operation, avoiding unnecessary material loss and filter cloth wear, and ensuring the stability and efficiency of the filter press. The guide shaft 07, connecting piece 10, and return spring are precisely fitted together and tightly connected to the one-way valve, ensuring that the one-way valve opens and closes accurately at the appropriate time.

[0064] The cloth clamping system is optimized for a high degree of coordination and automation. During feeding, the cover plate 09 opens, simultaneously opening the feed channel and allowing the slurry to flow smoothly into the chamber filter plate 02. Once feeding is complete, the cover plate 09 closes quickly, ensuring that neither can operate independently. After feeding, the return valve opens, activating the vacuum pump. The material returns to the feed box due to negative pressure. The cover plate 09 prevents material from being sucked into the filter chamber, creating unidirectional flow and maintaining system stability and sealing. The system also addresses the potential for uneven pressure distribution during pressing. The rational layout and use of the cloth clamping system ensures that the material receives uniform pressure in all directions. Uniform pressure prevents damage to the filter cloth due to excessive localized pressure, reduces slippage caused by uneven pressure, and ensures the continuity and effectiveness of the pressing process.

[0065] The cover plate 09 is made of stainless steel, which not only provides excellent clamping and fixing effect for the filter cloth, ensuring sealing performance, but also extends the service life of the cloth clamp due to its excellent corrosion resistance and mechanical strength. Meanwhile, the base 03 is made of polypropylene, which has high hardness, high temperature resistance, and acid and alkali resistance, further enhancing the durability of the cloth clamp. The various components of the cloth clamp are simple to assemble and install, easy to disassemble and maintain, reducing equipment maintenance costs and time, and facilitating the continuous and efficient operation of the filter press. Using a one-way valve function in the cloth clamp helps maintain the working stability of the filter press, improves the material handling efficiency, and brings higher economic benefits and a better user experience.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A fabric clamp, characterized in that, The cloth clamp is used to be installed on a chamber filter plate to clamp the chamber filter cloth on both sides of the chamber filter plate. The cloth clamp includes a cloth clamping assembly, which includes a base, a guide shaft, an elastic reset member, and a cover plate. A boss feeding channel is formed inside the cloth clamp, which is used to communicate with the chamber filter plate feeding channel. A base feeding channel is formed on the base, which communicates with the boss feeding channel. The guide shaft is installed on the base through the elastic reset member. The cover plate is located outside the boss feeding channel, and the cover plate is fixedly connected to the guide shaft so as to cover the port of the base feeding channel by the elastic force of the elastic reset member.

2. The fabric clamp according to claim 1, characterized in that, The elastic reset element is a pressure spring, which is located in the feed channel of the boss. A guide hole is formed on the device seat. The guide shaft slides in the guide hole along the axial direction of the guide shaft. The pressure spring is fitted onto the guide shaft. One end of the pressure spring abuts against the device seat, and the other end of the pressure spring is fixedly connected to the guide shaft.

3. The fabric clamp according to claim 2, characterized in that, The fabric clamping assembly also includes a retaining spring, which is fixed to the guide shaft and located outside the feed channel of the boss. The retaining spring is used to abut against the base.

4. The fabric clamp according to claim 3, characterized in that, A retaining ring groove is formed on the device base. The retaining ring groove is located on the side of the device base away from the feed channel of the boss. The retaining ring groove is coaxially arranged with the guide hole. The retaining ring is used to be installed in the retaining ring groove.

5. The fabric clamp according to claim 1, characterized in that, The axial direction of the guide shaft is parallel to the length direction of the feed channel of the device seat, and the axial direction of the guide shaft is perpendicular to the cover plate.

6. The fabric clamp according to any one of claims 1 to 5, characterized in that, It includes two of the aforementioned fabric clamping assemblies, each of which further includes a connector, and the two device seats are detachably connected via the connector.

7. The fabric clamp according to claim 6, characterized in that, Multiple feed channels are formed on the device base, and the feed channels are evenly arranged in the circumferential direction of the guide shaft.

8. The fabric clamp according to claim 7, characterized in that, The fabric clamping assembly includes multiple connectors, each of which is located at a position corresponding to one of the two adjacent feed channels of the device seat.

9. A chamber-type filter plate unit, characterized in that, The filter includes a chamber filter plate and a cloth clamp as described in any one of claims 1 to 8. The cloth clamp is installed on the chamber filter plate and includes two clamping seats for fixing two chamber filter cloths one-to-one on two surfaces of the chamber filter plate.

10. The chamber filter plate unit according to claim 9, characterized in that, The axial direction of the guide shaft is parallel to the length direction of the feed channel of the chamber seat, and the axial direction of the guide shaft is perpendicular to the cover plate. The cover plate is arranged parallel to the chamber filter plate.

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