Filtering device and process equipment

Abstract

The embodiment of the utility model provides a filtering device and process equipment, and belongs to the technical field of filtering separation. The filtering device comprises a bottom bracket, a perforated plate, filter cloth and a pressing ring, and the perforated plate is contained in the bottom bracket and used for supporting the filter cloth. The filter device further comprises a pressing frame, the pressing frame comprises a supporting ring body and a pressing connection structure connected with the inner wall of the supporting ring body, the supporting ring body is located between the filter cloth and the pressing ring body, the filter cloth is located between the porous plate and the supporting ring body, and the pressing connection structure is used for pressing the filter cloth. When the filter device is applied to process equipment and the stirring device stirs a solution, the possibility that the filter cloth bulges towards the direction deviating from the bottom bracket is favorably avoided or reduced, so that the possibility that the filter cloth is separated from the porous plate and the supporting ring body is reduced, and the use reliability of the filter device is favorably improved.

Description

Technical Field

[0001] The present application relates to the technical field of filtration and separation, and in particular to a filtration device and process equipment. Background Art

[0002] In some production processes, the solution needs to be filtered to separate the target particles from the solution. For example, in the sedimentation and pulping process of the patterned material, the small molecular monomers in the patterned material solution need to be removed. A process equipment includes a reactor, a stirring device and a filtering device. The filtering device is connected to one end of the reactor. At least part of the stirring device is accommodated in the reactor. The stirring device is used to stir the solution in the reactor so that the particles in the solution are evenly dispersed in the solution. The filtering device is used to separate the target particles from the solution. A common filtering device includes a bottom support, a porous plate, a filter cloth and a pressure ring. The porous plate is accommodated in the bottom support to support the filter cloth. The filter cloth is sandwiched between the bottom support and the pressure ring. However, a vortex is generated during the stirring process of the stirring device, and the pressure at the center of the vortex is low, causing the filter cloth to bulge upward in the direction away from the bottom support. After a long period of stirring, the filter cloth will detach from between the bottom support and the pressure ring, affecting the reliability of the filter device. Utility Model Content

[0003] The embodiments of the present application provide a filtering device and process equipment, which are beneficial to improving the reliability of use.

[0004] In a first aspect, an embodiment of the present application provides a filter device, the filter device includes a bottom bracket, a porous plate, a filter cloth and a pressure ring, the porous plate is accommodated in the bottom bracket, and is used to support the filter cloth. The porous plate is located between the filter cloth and the bottom bracket, the filter device also includes a pressure frame, the pressure frame includes a support ring body and a pressure connection structure connected to the inner wall of the support ring body, the support ring body is located between the filter cloth and the pressure ring, the filter cloth is located between the porous plate and the support ring body, and the pressure connection structure is used to press the filter cloth.

[0005] The filtering device provided in the present application is additionally provided with a pressing frame, wherein the supporting ring body is located between the filter cloth and the pressing ring, the filter cloth is located between the porous plate and the supporting ring body, and the crimping structure is used to press the filter cloth. When the filtering device is applied to process equipment and the stirring device stirs the solution, it is beneficial to avoid or reduce the possibility of the filter cloth bulging in a direction away from the base seat, thereby reducing the possibility of the filter cloth detaching from the porous plate and the supporting ring body, which is beneficial to improving the reliability of the use of the filtering device.

[0006] According to the first aspect, in a possible implementation manner, at least a portion of the orthographic projection of the crimping structure on the filter cloth is located at the geometric center of the filter cloth.

[0007] During the stirring process of the stirring device, a vortex is generated, and the pressure at the geometric center of the vortex is usually low, so that the geometric center of the filter cloth of the filtering device in the related art bulges most seriously.

[0008] In this possible implementation, since at least part of the orthographic projection of the crimping structure on the filter cloth is located at the geometric center of the filter cloth, the crimping structure can press the geometric center of the filter cloth so that it does not bulge during stirring by the stirring device.

[0009] According to the first aspect, in a possible implementation, the crimping structure includes a plurality of baffle rods, the first ends of the baffle rods are connected to the inner plate of the support ring body, the second ends of the plurality of baffle rods are connected together, and the connection point where the second ends of the plurality of baffle rods are connected together is located at least partially at the geometric center of the filter cloth in the positive projection of the filter cloth. This is beneficial to increase the contact area between the baffle rods and the filter cloth, thereby increasing the area of ​​the filter cloth crimped by the baffle rods, and further beneficial to reduce the possibility of the filter cloth detaching from the pressing frame and the porous plate, thereby improving the reliability of the filter device.

[0010] According to the first aspect, in a possible implementation manner, the number of the plurality of barrier bars is n, where n is a natural number, n≥2, and the angle between every two adjacent barrier bars is 360° / n.

[0011] In this possible implementation, since the plurality of baffle bars are evenly arranged along the circumference of the filter cloth, the force balance of the filter cloth is improved.

[0012] According to the first aspect, in a possible implementation, the baffle rod includes a first surface and a second surface that are connected to each other, the first surface is arranged on the side of the baffle rod facing the filter cloth, and the first surface is used to contact the filter cloth; the second surface is inclined relative to the stacking direction of the porous plate, the filter cloth, and the press frame, and the first angle formed by the second surface and the stacking direction is an obtuse angle.

[0013] In this possible implementation, the second surface is arranged to be inclined relative to the first direction, so as to guide the solution and reduce the possibility of the target particles staying on the blocking rod.

[0014] According to the first aspect, in a possible implementation, the barrier rod further includes a third surface, the first surface is connected between the second surface and the third surface, the third surface is inclined relative to the stacking direction, and a second angle formed by the third surface and the stacking direction is an obtuse angle.

[0015] In this possible implementation, on the basis of the second surface being an inclined surface, a third surface is added and the third surface is inclined relative to the stacking direction to guide the solution and reduce the possibility of the target particles staying on the baffle rod.

[0016] According to the first aspect, in a possible implementation, the base support includes a bottom plate and side plates connected to each other, the bottom plate and the side plates together form a receiving space, the side plates are connected to the pressure ring, the porous plate, the filter cloth, the pressure frame and at least part of the pressure ring are all received in the receiving space, the porous plate, the filter cloth and the pressure frame are clamped between the pressure ring and the bottom plate, and the filter cloth is located between the porous plate and the pressure frame.

[0017] In a related technology, a bottom bracket is provided with an opening, and the filter cloth is located between the bottom bracket and the porous plate, which face the same end face as the opening. In addition, in the related technology, a glass reactor is often used as a reactor. If the filter device is directly fixed to the reactor by fasteners, the reactor is easily damaged. A first pressing plate is provided on the outer fixed sleeve of the reactor, and the second pressing plate is fixedly connected to the first pressing plate by fasteners. The filter device is clamped between the first pressing plate and the second pressing plate, so that the filter cloth is fixedly clamped between the bottom bracket and the porous plate, which face the same end face as the opening. However, in this way, in the process of assembling the reactor and the filter device, the positions of the filter cloth, the porous plate, the pressure ring, the bottom bracket, the reactor and other structures need to be adjusted to achieve the required accuracy, which will affect the assembly efficiency.

[0018] The filter device provided by the present application has a side plate connected to a pressure ring, and the porous plate, filter cloth, pressure frame and at least part of the pressure ring are all accommodated in the accommodation space, and the porous plate, filter cloth and pressure frame are clamped between the pressure ring and the bottom plate, so that the filter cloth is fixed between the porous plate and the pressure frame, that is, the filter device can be assembled into a module in advance, and then the filter device and the reactor are assembled together. For example, the filter device can be placed between the first pressure plate and the second pressure plate, and the first pressure plate and the second pressure plate are fastened together by fasteners. Since the time for adjusting the positions of various structures such as the filter cloth, the porous plate, the pressure ring, the bottom support seat, the reactor, etc. is reduced during the process of assembling the filter device in the reactor, it is beneficial to improve the assembly efficiency of the process equipment.

[0019] According to the first aspect, in a possible implementation, the bottom plate is provided with a bottom wall facing the receiving space, the bottom wall is provided with a guide groove and a discharge port connected to the guide groove, and the bottom wall is inclined from the edge of the bottom plate toward the discharge port.

[0020] In this possible implementation, the bottom wall is inclined from the edge of the bottom plate toward the discharge port, so as to allow the filtered solution to flow to the discharge port through the guide groove by gravity, thereby avoiding or reducing residual solution in the bottom support seat to improve the filtering and separation accuracy of the filtering device.

[0021] According to the first aspect, in a possible implementation, the inner wall of the side plate is provided with an internal thread, and the outer wall of the pressure ring is provided with an external thread, and the internal thread is threadedly connected to the external thread to fix the porous plate, filter cloth, and pressure frame between the pressure ring and the bottom support seat, thereby reducing the possibility of the filter cloth moving relative to the porous plate and the pressure frame, and improving the convenience of assembly and disassembly of the filtering device.

[0022] According to the first aspect, in a possible implementation, the pressure ring includes a main body and a protrusion, the pressure frame is located between the main body and the filter cloth, the outer wall of the main body is provided with an external thread, and the protrusion is protruding on a side of the main body away from the pressure frame.

[0023] In this possible implementation, the protrusion is used for the user to hold, so that the user can rotate the pressure ring conveniently to achieve the threaded connection between the pressure ring and the base bracket.

[0024] According to the first aspect, in a possible implementation, at least one of the side of the support ring body facing the filter cloth and the side of the porous plate facing the filter cloth is provided with an annular receiving groove around the circumference of the filter cloth. The filtering device further comprises an annular ring, at least part of which is received in the receiving groove, and the filter cloth is located between the annular ring and the porous plate, so that the annular ring can press the filter cloth on the porous plate in the circumferential direction of the filter cloth, thereby reducing the possibility of the filter cloth detaching from the porous plate.

[0025] According to the first aspect, in a possible implementation, the base support is provided with an opening, and the filtering device further includes a sealing gasket, which covers the end surface of the base support facing the same direction as the opening, and the sealing gasket is used to seal between the base support and the reactor to improve the sealing between the base support and the reactor.

[0026] In a second aspect, the present application provides a process equipment, which includes a reactor, a stirring device and a filtering device provided according to the first aspect. The stirring device is accommodated in the reactor and is used to stir the solution in the reactor. The bottom support is connected to the reactor, and the filtering device is used to filter out target particles in the solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of a process equipment provided in one embodiment of the present application;

[0028] Figure 2 A three-dimensional assembly diagram of a filtering device provided in one embodiment of the present application;

[0029] Figure 3 for Figure 2 A side view of the filter device shown;

[0030] Figure 4 for Figure 2 A three-dimensional exploded schematic diagram of the filtering device shown;

[0031] Figure 5 For along Figure 2 The schematic cross-sectional view obtained by line II shown;

[0032] Figure 6 for Figure 4A side view of the filter device shown;

[0033] Figure 7 For along Figure 4 The schematic cross-sectional view obtained by the line II-II shown;

[0034] Figure 8 for Figure 7 An enlarged schematic diagram of a local area A;

[0035] Fig. 9 For along Figure 2 The three-dimensional cross-sectional view obtained along line II shown;

[0036] Fig.10 A side view of a barrier rod provided in accordance with an embodiment of the present application.

[0037] Reference numerals:

[0038] 1. Process equipment; 2. Reactor; 3. Stirring device; 31. Stirring rod; 33. Stirring blade; 4. Filtering device; 5. First pressing plate; 6. Second pressing plate; 7. Fastener; 41. Bottom bracket; 411. Bottom plate; 4111. Bottom wall; 4113. Guide groove; 4115. Discharge port; 4117. Guide area; 4118. Guide channel; 413. Side plate; 4131. Internal thread; 415. Accommodation space; 42. Multiple Orifice plate; 43, filter cloth; 44, pressure frame; 441, support ring body; 4411, accommodating groove; 443, crimping structure; 4431, blocking rod; 4433, first surface; 4435, second surface; 4437, third surface; C, first angle; D, second angle; 45, pressure ring; 451, main body; 4511, external thread; 453, protrusion; 46, annular ring; 47, sealing gasket; Z, first direction; X, second direction. DETAILED DESCRIPTION

[0039] See also Figure 1 , Figure 1A process equipment 1 is provided for one embodiment of the present application, and the process equipment 1 includes a reactor 2, a stirring device 3 and a filtering device 4. The reactor 2 is a container for performing physical or chemical reactions and is widely used in multiple industrial fields. It realizes functions such as heating, evaporation, cooling and mixing through structural design to meet specific process requirements. The reactor 2 is widely used in industries such as petroleum, chemical industry, rubber, pesticide, dye, medicine and food, and is used to complete processes such as sulfidation, nitration, hydrogenation, hydrocarbonization, polymerization and condensation. The reactor 2 is provided with a feed inlet. The stirring device 3 is accommodated in the reactor 2. The stirring device 3 is used to stir the solution in the reactor 2 so that the particles in the solution are evenly dispersed in the solution. The stirring device 3 includes a stirring rod 31 and a stirring blade 33 provided on the stirring rod 31. The stirring blade 33 may include a four-leaf upward stirring blade. The filtering device 4 is connected to one end of the reactor 2, and the filtering device 4 is used to filter out the target particles in the solution. The process equipment 1 also includes a first pressing plate 5, a second pressing plate 6 and a fastener 7. The first pressing plate 5 is sleeved on the reactor 2 , the second pressing plate 6 is fixedly connected to the first pressing plate 5 by a fastener 7 , and the filter device 4 is sandwiched between the first pressing plate 5 and the second pressing plate 6 , thereby realizing the installation of the filter device 4 on the reactor 2 .

[0040] For example, the process equipment 1 can be a semiconductor manufacturing equipment. In the process of production and preparation of patterned materials, sedimentation and beating are the core steps of post-processing of patterned materials, and their main purpose is to remove small molecule monomers in the patterned material solution. The patterned material solution includes resin. Both the sedimentation and beating processes involve the solid-liquid separation of solid resin and solvent by filtering. The target particles can be macromolecular resins, which are precipitated as powder / crystalline particles in a poor solvent, and small molecule monomers or oligomers are dissolved in a poor solvent. The filtering device 4 can be used to separate the macromolecular resin from the patterned material solution. It can be understood that the present application does not limit the process equipment 1 to semiconductor manufacturing equipment, and the process equipment 1 can also be used in other fields.

[0041] A common filtering device includes a base support, a porous plate, a filter cloth and a pressure ring. The porous plate is accommodated in the base support. The filter cloth is sandwiched between the base support and the pressure ring. However, a vortex is generated during the stirring process of the stirring device. The geometric center pressure of the vortex is low, causing the filter cloth to bulge upward away from the base support. After a long period of stirring, the filter cloth will separate from the base support and the pressure ring, affecting the reliability of the filtering device.

[0042] Based on this, see Figure 2 , Figure 3 , Figure 4 and Figure 5In one embodiment of the present application, a filter device 4 is provided, comprising a bottom support 41, a porous plate 42, a filter cloth 43 and a pressure ring 45. The porous plate 42 is accommodated in the bottom support 41, and is used to support the filter cloth 43. The porous plate 42 is located between the filter cloth 43 and the bottom support 41. The filter device 4 also includes a press frame 44, and the press frame 44 includes a support ring body 441 and a crimping structure 443 connected to the inner wall of the support ring body 441, and the support ring body 441 is located between the filter cloth 43 and the pressure ring 45, and the crimping structure 443 is used to press the filter cloth 43. The material of the bottom support 41, the porous plate 42, the filter cloth 43, the press frame 44 and the pressure ring 45 can include, but is not limited to, polytetrafluoroethylene (PTFE).

[0043] The filter device 4 provided in the present application is additionally provided with a pressing frame 44. The pressing structure 443 of the pressing frame 44 can press the filter cloth 43, which is beneficial to avoid or reduce the possibility of the filter cloth 43 bulging in the direction away from the base seat 41 when the stirring device 3 stirs the solution, thereby reducing the possibility of the filter cloth 43 detaching from the porous plate 42 and the support ring body 441, which is beneficial to improve the reliability of the filter device 4.

[0044] The pressing ring 45 includes a main body 451 and a protrusion 453. The pressing frame 44 is located between the main body 451 and the filter cloth 43. The outer wall of the main body 451 is provided with an external thread 4511. The protrusion 453 is convexly arranged on the side of the main body 451 away from the pressing frame 44. The protrusion 453 is used for the user to hold, so that the user can rotate the pressing ring 45 conveniently, so that the pressing ring 45 and the bottom bracket 41 are threadedly connected together.

[0045] The filter device 4 further comprises a sealing gasket 47 , which covers the end surface of the base support 41 facing the same direction as the opening. The sealing gasket 47 is used to seal between the base support 41 and the reactor 2 to improve the sealing performance between the base support 41 and the reactor 2 .

[0046] In some embodiments of the present application, the bottom bracket 41 includes a bottom plate 411 and a side plate 413 connected to each other, the bottom plate 411 and the side plate 413 together enclose a receiving space 415 and an opening connected to the receiving space 415, the side plate 413 is connected to the pressing ring 45, the porous plate 42, the filter cloth 43, the pressing frame 44 and at least part of the pressing ring 45 are all received in the receiving space 415, the porous plate 42, the filter cloth 43 and the pressing frame 44 are sandwiched between the pressing ring 45 and the bottom plate 411, and the filter cloth 43 is located between the porous plate 42 and the pressing frame 44. The bottom bracket 41 is used to be installed on the reactor 2.

[0047] In a related technology, a bottom bracket is provided with an opening, and the filter cloth is located between the bottom bracket and the porous plate, which face the same end face as the opening. In addition, in the related technology, a glass reactor is often used as a reactor. If the filter device is directly fixed to the reactor by fasteners, the reactor is easily damaged due to the stress. A first pressing plate is provided on the fixed sleeve outside the reactor, and the second pressing plate is fixedly connected to the first pressing plate by fasteners. The filter device is clamped between the first pressing plate and the second pressing plate, so that the filter cloth is fixedly clamped between the bottom bracket and the porous plate, which face the same end face as the opening. However, in this way, in the process of assembling the reactor and the filter device, the positions of the filter cloth, the porous plate, the pressure ring, the bottom bracket, the reactor and other structures need to be adjusted to achieve the required accuracy, which will affect the assembly efficiency of the filter device installed on the reactor.

[0048] The filter device 4 provided by the present application has a side plate 413 connected to a pressure ring 45, and the porous plate 42, the filter cloth 43, the pressure frame 44 and at least part of the pressure ring 45 are all accommodated in the accommodation space 415. The porous plate 42, the filter cloth 43 and the pressure frame 44 are sandwiched between the pressure ring 45 and the bottom plate 411, so that the filter cloth 43 is fixed between the porous plate 42 and the pressure frame 44. That is, the filter device 4 can be assembled into a module in advance, and then the filter device 4 is assembled with the reactor 2. For example, please refer to Figure 1 , the filter device 4 can be placed between the first pressing plate 5 and the second pressing plate 6, and the first pressing plate 5 and the second pressing plate 6 are fastened together by the fastener 7. Since the time for adjusting the positions of the filter cloth 43, the porous plate 42, the pressure ring 45, the bottom bracket 41, the reactor 2 and other structures is reduced during the process of assembling the filter device 4 in the reactor 2, it is beneficial to improve the assembly efficiency of the process equipment 1. It can be understood that the present application does not limit the filter device 4 to be assembled with the reactor 2 through the first pressing plate 5 and the second pressing plate 6. The filter device 4 can also be fixedly connected together in other ways. For example, when the reactor 2 is made of metal, the bottom bracket 41 can be directly fixed with the reactor 2 through the fastener 7.

[0049] Please refer to Figure 6 , Figure 7 and Figure 8, the bottom plate 411 is provided with a bottom wall 4111 facing the receiving space 415, and the bottom wall 4111 is provided with a guide groove 4113 and a discharge port 4115 connected to the guide groove 4113, and the guide groove 4113 is used to guide the filtered solution to the discharge port 4115. The discharge port 4115 is used to discharge the filtered solution. The bottom wall 4111 is inclined from the edge of the bottom plate 411 toward the discharge port 4115, that is, a lower conical slope design is made, which is used to allow the filtered solution to flow to the discharge port 4115 by gravity through the guide groove 4113, avoiding or reducing the residual solution in the bottom support 41, so as to improve the filtering and separation accuracy of the filter device 4. In this embodiment, the stacking direction of the porous plate 42, the filter cloth 43, and the press frame 44 is set as the first direction Z, the bottom wall 4111 is inclined relative to the second direction X, and the angle between the bottom wall 4111 and the second direction X is an acute angle. The second direction X is perpendicular to the first direction Z.

[0050] In this implementation, please refer to Fig. 9 , the bottom wall 4111 is roughly circular, and the discharge port 4115 is roughly located at the center of the circle. The cross-section of the bottom wall 4111 is roughly conical. The bottom wall 4111 also includes a plurality of fan-shaped guide areas 4117. For example, the number of guide areas 4117 can be 8, and a guide channel 4118 is formed between two adjacent guide areas 4117. The guide channel 4118 extends from the edge where the bottom wall 4111 and the side plate 413 meet to the discharge port 4115. The guide groove 4113 is connected to the guide channel 4118. Each guide area 4117 includes a plurality of guide grooves 4113, and the guide grooves 4113 extend along the circumference of the bottom wall 4111, and the plurality of guide grooves 4113 of the same guide area 4117 are arranged radially along the bottom wall 4111. The number of guide areas 4117 can be 2, 3, and so on. It can be understood that the present application does not limit the shape of the bottom wall 4111 , the present application does not limit the arrangement and setting of the guide area 4117 , and the present application does not limit the arrangement of the guide groove 4113 .

[0051] In some embodiments of the present application, the inner wall of the side plate 413 is provided with an internal thread 4131, such as Figure 8 As shown; the outer wall of the pressure ring 45 is provided with an external thread 4511, such as Figure 6 As shown. The internal thread 4131 is threadedly connected with the external thread 4511. The bottom bracket 41 is threadedly connected with the pressure ring 45, as shown. Figure 5 As shown, the porous plate 42, the filter cloth 43, and the pressing frame 44 are fixedly clamped between the pressing ring 45 and the bottom bracket 41, reducing the possibility of the filter cloth 43 moving relative to the porous plate 42 and the pressing frame 44, and improving the convenience of assembling and disassembling the filter device 4. It can be understood that the present application is not limited to the bottom bracket 41 and the pressing ring 45 being connected by threads, and the bottom bracket 41 and the pressing ring 45 can be connected by other means, such as clamping, etc.

[0052] During the stirring process of the stirring device, a vortex is generated. The pressure at the geometric center of the vortex is usually low, which makes the geometric center of the filter cloth of the filter device in the related art bulge the most seriously. Figure 4 and Figure 5 At least part of the orthographic projection of the pressing structure 443 on the filter cloth 43 is located at the geometric center of the filter cloth 43, so as to press the geometric center of the filter cloth 43 so that it cannot bulge during the stirring process of the stirring device 3. For example, when the filter cloth 43 is circular, the geometric center of the filter cloth 43 can be the center of the circle.

[0053] Please refer to Figure 7 and Fig. 9 , the side of the support ring body 441 facing the filter cloth 43 and the side of the porous plate 42 facing the filter cloth 43 are both provided with an annular receiving groove 4411 around the circumference of the filter cloth 43. The filter device 4 also includes an annular ring 46, at least part of which is received in the receiving groove 4411 of the porous plate 42 and the receiving groove 4411 of the support ring body 441, and the filter cloth 43 is located between the annular ring 46 and the porous plate 42, so that the annular ring 46 can press the filter cloth 43 on the porous plate 42 in the circumferential direction of the filter cloth 43, thereby reducing the possibility of the filter cloth 43 detaching from the porous plate 42.

[0054] It can be understood that in some embodiments, at least one of the side of the support ring body 441 facing the filter cloth 43 and the side of the porous plate 42 facing the filter cloth 43 is provided with an annular receiving groove 4411 around the circumference of the filter cloth 43. At least a portion of the annular ring 46 is received in the receiving groove 4411, and the filter cloth 43 is located between the annular ring 46 and the porous plate 42.

[0055] The crimping structure 443 includes a plurality of baffle rods 4431, a first end of the baffle rods 4431 being connected to the inner wall of the support ring body 441, and a second end of the plurality of baffle rods 4431 being connected together, and a connection point where the second ends of the plurality of baffle rods 4431 are connected together is located at least partially at the geometric center of the filter cloth 43 in the positive projection of the filter cloth 43, which is beneficial to increase the contact area between the baffle rods 4431 and the filter cloth 43, thereby increasing the area of ​​the filter cloth 43 crimped by the baffle rods 4431, and further beneficial to reduce the possibility of the filter cloth 43 detaching from the pressing frame 44 and the porous plate 42, thereby improving the reliability of the filter device 4.

[0056] The number of the plurality of baffles 4431 is n, where n is a natural number, preferably n≥6, and the angle between each two adjacent baffles 4431 is 360° / n. Since the plurality of baffles 4431 are evenly arranged along the circumference of the filter cloth 43, the force balance of the filter cloth 43 is improved. In some embodiments of the present application, n is 8, the crimping structure 443 is roughly in a cross shape, and the angle between each two adjacent baffles 4431 is 45°.

[0057] See also Fig.10 The blocking rod 4431 includes a first surface 4433 and a second surface 4435 connected to each other. The first surface 4433 is provided on the side of the blocking rod 4431 facing the filter cloth 43, and the first surface 4433 is used to contact the filter cloth 43. The second surface 4435 is tilted relative to the first direction Z, and the first direction Z is the stacking direction of the porous plate 42, the filter cloth 43, and the press frame 44. The first angle C formed by the second surface 4435 and the first direction Z is an obtuse angle. The second surface 4435 is tilted relative to the first direction Z, and the first angle C formed by the second surface 4435 and the first direction Z is an obtuse angle, so as to guide the solution and reduce the possibility of the target particles staying on the blocking rod 4431.

[0058] The blocking rod 4431 also includes a third surface 4437. The blocking rod 4431 is roughly in a triangular prism structure. The first surface 4433 is connected between the second surface 4435 and the third surface 4437. The third surface 4437 is tilted relative to the first direction Z, and the second angle D formed by the third surface 4437 and the stacking direction is an obtuse angle. The third surface 4437 is tilted relative to the first direction Z and the first angle C formed by the third surface 4437 and the first direction Z is an obtuse angle. On the basis of the second surface 4435 being an inclined plane, the third surface 4437 is added and the third surface 4437 is tilted relative to the first direction Z, that is, the two sides of the blocking rod 4431 are made into a slope to guide the solution and reduce the possibility of the target particles staying on the blocking rod 4431. While taking into account the filtering area and the stirring effect, the problem of the filter cloth 43 floating and bulging can be effectively solved. The first surface 4433, the second surface 4435, and the third surface 4437 can be planes.

[0059] It can be understood that the first surface 4433 can be a curved surface, and the first surface 4433 can also include a plane and / or a curved surface; the second surface 4435 can also be a curved surface, and the second surface 4435 can include a plane and / or a curved surface; the third surface 4437 can include a plane and / or a curved surface.

[0060] It can be understood that the present application does not limit the structure of the blocking rod 4431, and the blocking rod 4431 can also be other structures, for example, a cylinder, a square column, a semi-cylinder, and other regular or irregular structures.

[0061] It can be understood that the present application does not limit the shape and structure of the crimping structure 443. For example, in some embodiments, the number of the plurality of baffles 4431 is n, n is a natural number, n≥2, and the angle between each two adjacent baffles 4431 is 360° / n. Since the plurality of baffles 4431 are evenly arranged along the circumference of the filter cloth 43, the force balance of the filter cloth 43 is improved. For example, in some embodiments, the crimping structure 443 may include at least two baffles 4431 and at least one crimping ring, and the projection of the connection where the second ends of at least two baffles 4431 are connected together and the second ends of four baffles 4431 are connected together is located at the geometric center of the filter cloth 43, and the crimping ring is fixed to the four baffles 4431, and the center of the crimping ring can be located at the connection. When there are multiple crimping rings, the radii of the multiple crimping rings are different, and the multiple crimping rings are arranged along the radial direction of the support ring body 441. The present application does not limit that at least part of the positive projection of the crimping structure 443 on the filter cloth 43 is located at the geometric center of the filter cloth 43.

[0062] It should be understood that expressions such as "including" and "may include" that may be used in the present application indicate the existence of the disclosed functions, operations, or constituent elements, and do not limit one or more additional functions, operations, and constituent elements. In the present application, terms such as "including" and / or "having" may be interpreted as indicating specific characteristics, numbers, operations, constituent elements, components, or combinations thereof, but may not be interpreted as excluding the existence or possibility of adding one or more other characteristics, numbers, operations, constituent elements, components, or combinations thereof.

[0063] In addition, in the present application, the expression "and / or" includes any and all combinations of the associated listed words. For example, the expression "A and / or B" may include A, may include B, or may include both A and B.

[0064] In the present application, expressions including ordinal numbers such as "first" and "second" may modify various elements. However, such elements are not limited by the above expressions. For example, the above expressions do not limit the order and / or importance of the elements. The above expressions are only used to distinguish one element from other elements. For example, a first user device and a second user device indicate different user devices, although the first user device and the second user device are both user devices. Similarly, without departing from the scope of the present application, a first element may be referred to as a second element, and similarly, a second element may also be referred to as a first element.

[0065] When a component is referred to as being "connected" or "accessed" to another component, it should be understood that the component is not only directly connected to or accessed to the other component, but also another component may exist between the component and the other component. On the other hand, when a component is referred to as being "directly connected" or "directly accessed" to another component, it should be understood that there is no component between them.

[0066] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A filter device (4), comprising a base support (41), a porous plate (42), a filter cloth (43) and a pressure ring (45), wherein the porous plate (42) is received in the base support (41) and is used to support the filter cloth (43), characterized in that: The porous plate (42) is located between the filter cloth (43) and the bottom bracket (41). The filtering device (4) further comprises a pressing frame (44), wherein the pressing frame (44) comprises a supporting ring body (441) and a crimping structure (443) connected to the inner wall of the supporting ring body (441), wherein the supporting ring body (441) is located between the filter cloth (43) and the pressing ring (45), and the crimping structure (443) is used to press the filter cloth (43).

2. The filtering device (4) according to claim 1, characterized in that: At least part of the orthographic projection of the filter cloth (43) of the crimping structure (443) is located at the geometric center of the filter cloth (43).

3. The filtering device (4) according to claim 2, characterized in that: The crimping structure (443) comprises a plurality of baffle rods (4431), wherein the first ends of the baffle rods (4431) are connected to the inner plate of the support ring body (441), and the second ends of the plurality of baffle rods (4431) are connected together, and the connection point where the second ends of the plurality of baffle rods (4431) are connected together is located at least partially at the geometric center of the filter cloth (43) on the positive projection of the filter cloth (43).

4. The filtering device (4) according to claim 3, characterized in that The number of the plurality of blocking rods (4431) is n, where n is a natural number, n≥2, and the angle between each two adjacent blocking rods (4431) is 360° / n.

5. The filtering device (4) according to claim 3, characterized in that: The blocking rod (4431) comprises a first surface (4433) and a second surface (4435) connected to each other, the first surface (4433) being arranged on a side of the blocking rod (4431) facing the filter cloth (43), and the first surface (4433) being used for contacting the filter cloth (43); The second surface (4435) is inclined relative to the stacking direction of the porous plate (42), the filter cloth (43) and the press frame (44), and the first angle (C) formed by the second surface (4435) and the stacking direction is an obtuse angle.

6. The filtering device (4) according to claim 5, characterized in that The blocking rod (4431) also includes a third surface (4437), the first surface (4433) is connected between the second surface (4435) and the third surface (4437), the third surface (4437) is inclined relative to the stacking direction, and the second angle (D) formed by the third surface (4437) and the stacking direction is an obtuse angle.

7. The filtering device (4) according to claim 1, characterized in that The bottom support seat (41) comprises a bottom plate (411) and a side plate (413) which are connected to each other. The bottom plate (411) and the side plate (413) together enclose a receiving space (415). The side plate (413) is connected to the pressure ring (45). The porous plate (42), the filter cloth (43), the pressure frame (44) and at least a part of the pressure ring (45) are all received in the receiving space (415). The porous plate (42), the filter cloth (43) and the pressure frame (44) are sandwiched between the pressure ring (45) and the bottom plate (411). The filter cloth (43) is located between the porous plate (42) and the pressure frame (44).

8. The filtering device (4) according to claim 7, characterized in that The bottom plate (411) is provided with a bottom wall (4111) facing the receiving space (415), the bottom wall (4111) is provided with a guide groove (4113) and a discharge port (4115) connected to the guide groove (4113), and the bottom wall (4111) is inclined from the edge of the bottom plate (411) toward the discharge port (4115).

9. The filtering device (4) according to claim 7, characterized in that: The inner wall of the side plate (413) is provided with an internal thread (4131), the outer wall of the pressure ring (45) is provided with an external thread (4511), and the internal thread (4131) is threadedly connected to the external thread (4511).

10. The filter device (4) according to claim 9, characterized in that The pressing ring (45) comprises a main body (451) and a protrusion (453); the pressing frame (44) is located between the main body (451) and the filter cloth (43); the outer wall of the main body (451) is provided with the external thread (4511); and the protrusion (453) is protruding from the side of the main body (451) away from the pressing frame (44).

11. The filter device (4) according to claim 7, characterized in that At least one of the side of the support ring body (441) facing the filter cloth (43) and the side of the porous plate (42) facing the filter cloth (43) is provided with an annular accommodation groove (4411) around the circumference of the filter cloth (43); The filtering device (4) further comprises an annular ring (46), at least a portion of which is accommodated in the accommodating groove (4411), and the filter cloth (43) is located between the annular ring (46) and the porous plate (42).

12. The filter device (4) according to claim 1, characterized in that The base support (41) is provided with an opening, and the filtering device (4) further comprises a sealing gasket (47), wherein the sealing gasket (47) covers an end surface of the base support (41) facing the same direction as the opening, and the sealing gasket (47) is used for sealingly connecting the base support (41) and the reaction kettle (2).

13. A process equipment (1), characterized in that: The process equipment (1) comprises a reactor (2), a stirring device (3) and a filtering device (4) according to any one of claims 1 to 12, wherein the stirring device (3) is accommodated in the reactor (2), the stirring device (3) is used to stir the solution in the reactor (2), the base support (41) is connected to the reactor (2), and the filtering device (4) is used to filter out target particles in the solution.

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