A filter press device with filter cloth replacement convenience

Abstract

This invention belongs to the field of filter press technology and discloses a filter press device that facilitates filter cloth replacement. It includes a filter plate and a filter cloth assembly mounted thereon, and further includes: a support assembly mounted at the bottom of the filter cloth assembly; a clamping assembly disposed on the support assembly; and a locking mechanism disposed on the filter cloth assembly. The above solution allows the operator to rotate and open the U-shaped frame, place the filter cloth between the U-shaped frame and the U-shaped frame, and then close the U-shaped frame. Once the bottom of the U-shaped frame passes over the filter plate and is fixed by the locking mechanism, the filter cloth installation is complete. When two adjacent filter plates approach each other, the outer clamping surfaces of the adjacent filter plates will press against each other, further compressing the filter cloth with the wedge-shaped surface. This tensions the filter cloth in the lateral direction, maintaining its flatness and avoiding the problems of removing the filter plate during filter cloth installation and the complex installation process that reduces installation efficiency.

Description

Technical Field

[0001] This invention belongs to the field of filter press technology, specifically a filter press device that facilitates filter cloth replacement. Background Technology

[0002] A filter press is a mechanical device that separates solids and liquids by applying pressure. Material is pumped into the filter chamber, forming a filter cake on the surface of the filter cloth or membrane. Pressure is then applied to expel the liquid, leaving the remaining solid as the filter cake, while the liquid is discharged through the filter cloth. As a consumable item, the filter cloth gradually ages under normal use, leading to a decline in its filtration performance as the number of filtration cycles increases and usage time increases. Once it reaches the end of its service life, it needs to be replaced promptly to ensure the normal operation and filtration efficiency of the filter press.

[0003] When installing filter cloths on filter plates, the holes on the filter cloth are usually aligned with the holes on the filter plate, placed flat, and secured with clips or bolts depending on the type. The sides of the filter cloth are typically tied to the other side of the filter plate by the operator using disposable cable ties. During disassembly, the operator must carefully cut the cable ties to avoid damaging the filter cloth and filter plate, and then loosen the clips or unscrew the bolts one by one before the filter cloth can be removed. Since a filter press has multiple filter plates, and each filter plate typically weighs tens of kilograms, making it inconvenient for operators to remove, the obstruction of the filter press frame further increases the difficulty of changing the filter cloth. Therefore, to solve the above problems, a filter press device that facilitates filter cloth replacement is proposed. Summary of the Invention

[0004] To address the problems mentioned in the background section, this invention provides a filter press that facilitates filter cloth replacement, thus solving the problem of filter cloth in filter presses being difficult to replace.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a filter press device for easy replacement of filter cloth, comprising a filter plate and a filter cloth assembly mounted thereon, and further comprising: a support assembly mounted on the bottom of the filter cloth assembly; a clamping assembly disposed on the support assembly for fixing the bottom edge of the filter cloth; and a locking mechanism disposed on the filter cloth assembly for limiting the filter cloth assembly mounted on the filter plate in the vertical direction. The filter cloth assembly includes a U-shaped frame movably mounted on the filter plate, a U-shaped bracket hinged to the top of the U-shaped frame, a U-shaped assembly groove provided on the U-shaped bracket, and the U-shaped bracket can be inserted into the U-shaped assembly groove. The filter cloth is placed between the U-shaped frame and the U-shaped bracket. By rotating the U-shaped bracket, the filter cloth is squeezed into the U-shaped assembly groove, which can fix the three sides of the filter cloth. The support assembly includes a spring telescopic rod and a connecting rod hinged to both sides of the U-shaped frame. The bottom end of the connecting rod is hinged to one end of the spring telescopic rod, and the other end of the spring telescopic rod extends outward and crosses the vertical plane of the filter plate. The clamping assembly is mounted on the spring telescopic rod.

[0006] Preferably, the vertical portion of the U-shaped frame has a wedge-shaped surface, and the wedge-shaped surface can also be engaged in the U-shaped assembly groove.

[0007] Preferably, the side of the U-shaped frame located outside the U-shaped assembly groove is the outer clamping surface. When the U-shaped frame is fully inserted into the U-shaped assembly groove, the outer clamping surface and the surface of the filter plate are on the same plane.

[0008] Preferably, the locking mechanism includes a pull rod assembly disposed on the U-shaped frame; A locking block is movably connected to the bottom of the U-shaped frame; the locking block has an inclined groove, and the bottom of the pull rod assembly is provided with a convex shaft that can slide in the inclined groove. The pull rod assembly drives the convex shaft to move upward along the inclined groove, which can release the locking block from the bottom of the filter plate.

[0009] Preferably, the pull rod assembly includes a pull rod body movably installed inside the U-shaped frame, the top of the pull rod body extending above the U-shaped frame, and a spring combination rod provided at the bottom of the pull rod body, with a convex shaft fixedly connected to the bottom of the spring combination rod.

[0010] Preferably, the pull rod body is also provided with an inclined surface; an elastic inclined block is also elastically connected inside the U-shaped frame, one end of the elastic inclined block extends to the outside of the U-shaped frame, and the spring telescopic rod can squeeze the elastic inclined block and retract it into the U-shaped frame when it rotates around the axis; When the other end of the U-shaped frame moves toward the inclined plane, it can squeeze the inclined plane and drive the pull rod body downward, making the top of the pull rod body flush with the top of the U-shaped frame.

[0011] Preferably, the clamping assembly includes an elastic bracket that is elastically hinged to the bottom of the spring telescopic rod. The elastic bracket has a limiting groove. A shaft is fitted at both the top and bottom of the elastic bracket. Plate 1 and Plate 2 are respectively fitted on the outside of the two shafts. The ends of Plate 1 and Plate 2 that are close to each other are hinged, and the hinge point is the shaft. An elastic support is fitted at the ends of the two shafts. Two sets of elastic supports are respectively disposed inside Plate 1 and Plate 2 and are used to support Plate 1 and Plate 2 respectively. A slider that can slide in the limiting groove is fixed at both ends of the shaft. A pressure block is fixed between the two sliders. The side of the pressure block that is close to the elastic bracket and Plate 1 respectively makes contact with both.

[0012] Preferably, the pressure block has an arc-shaped surface, and the arc-shaped surface has gaps between itself and the elastic support and the plate.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: The above solution involves the operator rotating and opening the U-shaped frame, placing the filter cloth between the U-shaped frame and the U-shaped frame, and then covering it with the U-shaped frame. At this point, three sides of the filter cloth will be fixed to the filter cloth assembly. Meanwhile, the remaining side of the filter cloth is fixed by the clamping assembly. The U-shaped frame is then inserted from the top of the filter plate. When the bottom of the U-shaped frame passes over the filter plate and is fixed by the locking mechanism, the filter cloth installation is complete. When two adjacent filter plates approach each other, the outer clamping surfaces of the adjacent filter plates will press against each other, thereby further pressing the filter cloth with the wedge-shaped surface. This tensions the filter cloth in the transverse direction to keep it flat, avoiding the problems of removing the filter plate during filter cloth installation and the complex installation process that reduces installation efficiency. The above scheme uses a filter press where two adjacent sets of filter plates are close together. This causes the pressure block to be squeezed by another set of pressure blocks to maintain a vertical position and drive the spring telescopic rod to rotate around the axis. This causes the filter cloth to move between the pressure block, plate one, and plate two. At the same time, the edge of the filter cloth is also subjected to friction between the three and gradually increases as the spring telescopic rod rotates. When the pressure block is completely under the U-shaped frame, the filter cloth is tightened in the vertical direction to keep the filter cloth flat in the vertical direction. The above solution involves moving the convex shaft along the inclined groove by pulling the pull rod assembly, thereby releasing the locking block from the bottom of the filter plate. When the convex shaft is at the top of the inclined groove, the operator can pull the pull rod assembly, which will cause the filter cloth assembly to move upward and detach from the filter plate through the convex shaft and the locking block, thus completing the disassembly of the filter cloth and solving the problem of the cumbersome disassembly of the filter cloth on the filter plate. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram showing the disassembled structure of the filter plate and filter cloth assembly of the present invention; Figure 3 This is a schematic diagram of the filter cloth assembly assembly of the present invention; Figure 4 This is a schematic diagram of the top cross-sectional structure of the U-shaped frame of the present invention; Figure 5 This is a partial cross-sectional view of the U-shaped frame of the present invention; Figure 6 This is a schematic diagram of the locking mechanism of the present invention; Figure 7 This is a schematic diagram of the structure of the support component of the present invention; Figure 8 This is a schematic diagram of the clamping assembly of the present invention; Figure 9 This is a three-dimensional structural diagram of a plate component of the present invention after folding. Figure 10 This is a schematic diagram of the front view of the first plate of the present invention after it has been opened; Figure 11 This is a schematic diagram of the front view of the closed plate of the present invention.

[0015] In the diagram: 1. Filter plate; 2. Filter cloth assembly assembly; 21. U-shaped frame; 22. U-shaped bracket; 221. Wedge-shaped surface; 222. Outer clamping surface; 23. U-shaped assembly groove; 3. Support assembly; 31. Spring telescopic rod; 32. Connecting rod; 4. Clamping assembly; 41. Elastic bracket; 411. Limiting groove; 42. Plate 1; 43. Plate 2; 44. Shaft 1; 45. Elastic support component; 46. Shaft 2; 47. Slider; 48. Pressure block; 481. Arc-shaped surface; 5. Locking mechanism; 51. Pull rod assembly; 511. Pull rod body; 512. Spring combination rod; 513. Inclined surface; 52. Clamping block; 53. Inclined groove; 54. Protruding shaft; 6. Elastic inclined block. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] like Figures 1 to 11 As shown, the present invention provides a filter press device that facilitates filter cloth replacement, including a filter plate 1 and a filter cloth assembly 2 mounted thereon, and further including: a support assembly 3 mounted on the bottom of the filter cloth assembly 2; a clamping assembly 4 disposed on the support assembly 3 for fixing the bottom edge of the filter cloth; and a locking mechanism 5 disposed on the filter cloth assembly 2 for limiting the filter cloth assembly 2 mounted on the filter plate 1 in the vertical direction. The filter cloth assembly 2 includes a U-shaped frame 21 movably mounted on the filter plate 1. A U-shaped frame 22 is hinged to the top of the U-shaped frame 21. A U-shaped assembly groove 23 is provided on the U-shaped frame 22, and the U-shaped frame 22 can be inserted into the U-shaped assembly groove 23. The filter cloth is placed between the U-shaped frame 21 and the U-shaped bracket 22. By rotating the U-shaped bracket 22, the filter cloth is squeezed into the U-shaped assembly groove 23, which can fix the three sides of the filter cloth. The support assembly 3 includes a spring telescopic rod 31 and a connecting rod 32 hinged to both sides of the U-shaped frame 21. The bottom end of the connecting rod 32 is hinged to one end of the spring telescopic rod 31. The other end of the spring telescopic rod 31 extends outward and crosses the vertical plane of the filter plate 1. The clamping assembly 4 is installed on the spring telescopic rod 31. The vertical portion of the U-shaped frame 22 is provided with a wedge-shaped surface 221, and the wedge-shaped surface 221 can also be inserted into the U-shaped assembly groove 23; The U-shaped frame 22 has an outer clamping surface 222 on one side outside the U-shaped assembly groove 23. When the U-shaped frame 22 is fully inserted into the U-shaped assembly groove 23, the outer clamping surface 222 and the surface of the filter plate 1 are on the same plane.

[0018] Using the above scheme, the operator rotates and opens the U-shaped frame 22, places the filter cloth between the U-shaped frame 21 and the U-shaped frame 22, and then closes the U-shaped frame 22. At this time, three sides of the filter cloth will be fixed on the filter cloth assembly 2. At the same time, the remaining side of the filter cloth is fixed by the clamping assembly 4. The U-shaped frame 21 is then inserted from the top of the filter plate 1. When the bottom of the U-shaped frame 21 passes over the filter plate 1 and is fixed by the locking mechanism 5, the filter cloth installation is complete. When two adjacent filter plates 1 approach each other, the outer clamping surfaces 222 on the adjacent filter plates 1 will press against each other, thereby causing the wedge surface 221 to further press the filter cloth, thus tensioning the filter cloth in the transverse direction to keep the filter cloth flat in the transverse direction. This avoids the problem of having to remove the filter plate 1 during filter cloth installation and the problem of complicated installation process that reduces installation efficiency.

[0019] like Figures 1-6 As shown, the locking mechanism 5 includes a pull rod assembly 51 disposed on the U-shaped frame 21; a locking block 52 movably connected to the bottom of the U-shaped frame 21; a groove 53 is provided on the locking block 52; a convex shaft 54 ​​is provided at the bottom of the pull rod assembly 51 that can slide in the groove 53; the pull rod assembly 51 drives the convex shaft 54 ​​to move upward along the groove 53, which can release the locking block 52 from the bottom of the filter plate 1. The pull rod assembly 51 includes a pull rod body 511 movably installed inside the U-shaped frame 21. The top of the pull rod body 511 extends above the U-shaped frame 21, and a spring combination rod 512 is provided at the bottom of the pull rod body 511. The convex shaft 54 ​​is fixedly connected to the bottom of the spring combination rod 512. The pull rod body 511 is also provided with a slope 513; the U-shaped frame 21 is also elastically connected with an elastic inclined block 6, one end of which extends to the outside of the U-shaped frame 21. When the spring telescopic rod 31 rotates around the axis, it can squeeze the elastic inclined block 6 and retract it into the U-shaped frame 21. When the other end of the U-shaped frame 21 moves toward the inclined plane 513, it can squeeze the inclined plane 513 and drive the pull rod body 511 downward, and make the top of the pull rod body 511 flush with the top of the U-shaped frame 21; By adopting the above solution, the pull rod assembly 51 is pulled to move the convex shaft 54 ​​along the inclined groove 53, thereby causing the locking block 52 to release from the bottom of the filter plate 1. When the convex shaft 54 ​​is at the top of the inclined groove 53, the operator pulls the pull rod assembly 51, which will drive the filter cloth assembly 2 to move upward and detach from the filter plate 1 through the convex shaft 54 ​​and the locking block 52, thereby completing the disassembly of the filter cloth and solving the problem of the cumbersome disassembly of the filter cloth on the filter plate 1.

[0020] like Figures 1-5 and Figures 7-11 As shown, the clamping assembly 4 includes an elastic bracket 41 that is elastically hinged to the bottom of the spring telescopic rod 31. A limiting groove 411 is provided on the elastic bracket 41. A shaft 44 is sleeved on the top and bottom of the elastic bracket 41. A plate 42 and a plate 43 are respectively sleeved on the outside of the two shafts 44. The ends of the plates 42 and 43 are hinged to each other, and the hinge point is the shaft 46. An elastic support 45 is sleeved on the ends of the two shafts 44. The two sets of elastic support 45 are respectively disposed inside the plates 42 and 43 and are used to support the plates 42 and 43 respectively. A slider 47 that can slide in the limiting groove 411 is fixedly connected to both ends of the shaft 46. A pressure block 48 is fixedly connected between the two sliders 47. The side of the pressure block 48 that is close to the elastic bracket 41 and the plate 42 respectively cooperates with the two. The pressure block 48 has an arc-shaped surface 481, and the arc-shaped surface 481 has gaps between itself and the elastic support 41 and the plate 42 respectively. Using the above scheme, when two adjacent sets of filter plates 1 on the filter press are close together, the pressure block 48 is squeezed by another set of pressure blocks 48 to keep it in a vertical state and drive the spring telescopic rod 31 to rotate around the axis, so that the filter cloth moves between the pressure block 48, plate 1 42 and plate 2 43. At the same time, the edge of the filter cloth will also be subjected to the friction between the three and gradually increase with the rotation of the spring telescopic rod 31. When the pressure block 48 is completely under the U-shaped frame 21, the filter cloth is tightened in the vertical direction to keep the filter cloth flat in the vertical direction. It is worth noting that when the operator clamps the filter cloth, by pulling the pressure block 48, the slider 47 will also drive the shaft 46 to move. When the shaft 46 passes the axis of the elastic support 41 in the horizontal direction, the elastic force of the elastic support 45 will support the plate 42 and the plate 43 through the shaft 44 to maintain the expansion state in the opposite direction from the initial state. At this time, the operator can put the bottom end of the filter cloth into the gap between the arc surface 481 and the elastic support 41 and the plate 42, and then move the pressure block 48 in the opposite direction to clamp the filter cloth.

[0021] Working principle and usage process of this invention: The operator rotates and opens the U-shaped frame 22, places the filter cloth between the U-shaped frame 21 and the U-shaped frame 22, and then closes the U-shaped frame 22. At this time, three sides of the filter cloth will be fixed on the filter cloth assembly 2. At the same time, the remaining side of the filter cloth is fixed by the clamping assembly 4. The U-shaped frame 21 is then inserted from the top of the filter plate 1. When the bottom of the U-shaped frame 21 passes over the filter plate 1 and is fixed by the locking mechanism 5, the filter cloth is installed. When two adjacent filter plates 1 approach each other, the outer clamping surfaces 222 on the adjacent filter plates 1 will press against each other, thereby causing the wedge surface 221 to further press the filter cloth, thus making the filter cloth tensile in the transverse direction to keep the filter cloth flat in the transverse direction. Several sets of filter plates 1 are provided on the filter press. When two adjacent sets of filter plates 1 approach each other, the pressure block 48 will be squeezed by another set of pressure blocks 48 to keep it in a vertical state and drive the spring telescopic rod 31 to rotate around the axis, so that the filter cloth moves between the pressure block 48, plate 1 42 and plate 2 43. At the same time, the edge of the filter cloth will also be subjected to the friction between the three and gradually increase as the spring telescopic rod 31 rotates. When the pressure block 48 is completely under the U-shaped frame 21, the filter cloth is tightened in the vertical direction to keep the filter cloth flat in the vertical direction. When the operator needs to remove the device, the pull rod assembly 51 is pulled to move the cam shaft 54 ​​along the inclined groove 53, thereby causing the locking block 52 to release from the bottom of the filter plate 1. When the cam shaft 54 ​​is at the top of the inclined groove 53, the operator pulls the pull rod assembly 51, which will drive the filter cloth assembly 2 to move upward and separate from the filter plate 1 through the cam shaft 54 ​​and the locking block 52, thus completing the disassembly of the filter cloth.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A filter press device for easy replacement of filter cloth, comprising a filter plate (1) and a filter cloth assembly (2) mounted thereon, characterized in that, Also includes: Support component (3), which is installed at the bottom of filter cloth assembly component (2); Clamping assembly (4), which is disposed on support assembly (3) for fixing the bottom edge of filter cloth; A locking mechanism (5) is provided on the filter cloth assembly (2) for limiting the filter cloth assembly (2) installed on the filter plate (1) in the vertical direction; The filter cloth assembly (2) includes a U-shaped frame (21) movably mounted on the filter plate (1), a U-shaped bracket (22) is hinged to the top of the U-shaped frame (21), a U-shaped assembly groove (23) is provided on the U-shaped bracket (22), and the U-shaped bracket (22) can be inserted into the U-shaped assembly groove (23); The filter cloth is placed between the U-shaped frame (21) and the U-shaped bracket (22). By rotating the U-shaped bracket (22), the filter cloth is squeezed into the U-shaped assembly groove (23), which can fix the three sides of the filter cloth. The support assembly (3) includes a spring telescopic rod (31) and a connecting rod (32) hinged to both sides of the U-shaped frame (21). The bottom end of the connecting rod (32) is hinged to one end of the spring telescopic rod (31). The other end of the spring telescopic rod (31) extends outward and crosses the vertical plane of the filter plate (1). The clamping assembly (4) is installed on the spring telescopic rod (31).

2. The filter press device for easy filter cloth replacement according to claim 1, characterized in that: The vertical portion of the U-shaped frame (22) has a wedge-shaped surface (221), and the wedge-shaped surface (221) can also be inserted into the U-shaped assembly groove (23).

3. The filter press device for easy filter cloth replacement according to claim 2, characterized in that: The U-shaped frame (22) is located on the outer side of the U-shaped assembly groove (23) as an outer carding surface (222). When the U-shaped frame (22) is fully inserted into the U-shaped assembly groove (23), the outer carding surface (222) and the plate surface of the filter plate (1) are on the same plane.

4. The filter press device for easy filter cloth replacement according to claim 1, characterized in that: The locking mechanism (5) includes a pull rod assembly (51) disposed on the U-shaped frame (21); The card block (52) is connected to the bottom of the U-shaped frame (21); The locking block (52) has an inclined groove (53), and the bottom of the pull rod assembly (51) is provided with a convex shaft (54) that can slide in the inclined groove (53). The pull rod assembly (51) drives the convex shaft (54) to move upward along the inclined groove (53), which can release the locking block (52) from the bottom of the filter plate (1).

5. The filter press device for easy filter cloth replacement according to claim 4, characterized in that: The pull rod assembly (51) includes a pull rod body (511) movably installed inside the U-shaped frame (21), the top of the pull rod body (511) extending above the U-shaped frame (21), and a spring combination rod (512) provided at the bottom of the pull rod body (511), and a convex shaft (54) fixedly connected to the bottom of the spring combination rod (512).

6. The filter press device for easy filter cloth replacement according to claim 5, characterized in that: The tie rod body (511) is also provided with an inclined surface (513); The U-shaped frame (21) is also elastically connected to an elastic inclined block (6), one end of which extends to the outside of the U-shaped frame (21). When the spring telescopic rod (31) rotates around the axis, it can squeeze the elastic inclined block (6) and retract it into the U-shaped frame (21). When the other end of the U-shaped frame (21) moves toward the inclined plane (513), it can squeeze the inclined plane (513) and drive the pull rod body (511) downward, and make the top of the pull rod body (511) flush with the top of the U-shaped frame (21).

7. The filter press device for easy filter cloth replacement according to claim 1, characterized in that: The clamping assembly (4) includes an elastic bracket (41) elastically hinged to the bottom of the spring telescopic rod (31). A limiting groove (411) is provided on the elastic bracket (41). A shaft (44) is fitted onto both the top and bottom of the elastic bracket (41). Plates (42) and (43) are respectively fitted onto the outside of the two shafts (44). The ends of the plates (42) and (43) that are close to each other are hinged, with the hinge point being the shaft (46). The two shafts (44)... The ends of the shaft are fitted with elastic support members (45). The two sets of elastic support members (45) are respectively set inside the first plate (42) and the second plate (43) and are used to support the first plate (42) and the second plate (43) respectively. The two ends of the shaft (46) are fixed with sliders (47) that can slide in the limiting groove (411). A pressure block (48) is fixed between the two sliders (47). The pressure block (48) is in contact with the elastic support (41) and the first plate (42) respectively.

8. The filter press device for easy filter cloth replacement according to claim 7, characterized in that: The pressure block (48) has an arc-shaped surface (481) and gaps are left between the arc-shaped surface (481) and the elastic bracket (41) and the plate (42).

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