Fluid filter plate

Abstract

The utility model discloses a fluid filtering plate which comprises a main body plate, filtering holes uniformly distributed in the main body plate, filtering pieces fixedly arranged in the filtering holes, integrated with the main body plate and formed by the main body plate, a connecting structure arranged on the main body plate, and a filtering sintering felt detachably mounted on the top surface of the main body plate through the connecting structure, the through holes are formed in the main body plate, the opening direction of the through holes is opposite to that of the filtering holes, and the opening direction of the filtering holes is that the top surface of the main body plate faces the bottom surface of the main body plate. According to the stepped filtering plate, fluid is filtered in a stepped manner, so that the speed of the fluid passing through the filtering piece is ensured, the filtering efficiency is ensured, and when the filtering piece is blocked and needs back flushing, obstructions are blown out from the filtering layers with small apertures to the filtering layers with large apertures, so that the obstructions can be blown out more easily during back flushing, and the filtering plate can be used continuously; the service life of the filtering material is prolonged and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid filtering, in particular to a fluid filtering plate. Background Art

[0002] In the industrial field, especially in the chemical, environmental protection, pharmaceutical, food and other industries, fluid filtration processes are involved, and these fluids are generally high-temperature, high-pressure, high-viscosity, and highly corrosive fluids, which requires high-performance filtration materials to filter and purify these fluids.

[0003] At present, the filter materials obtained by sintering fiber sintered felt or special powder are generally used to filter high-temperature, high-pressure, high-viscosity, and highly corrosive fluids. Fiber sintered felt uses metal fiber as raw material and is a felt-like material made of metal fiber through a specific process. Fiber sintered felt has a porous three-dimensional porous structure. The filtration accuracy of fiber sintered felt mainly depends on the pore size formed by the stacking of fibers and the metal fiber processing technology. The current filtration accuracy of fiber sintered felt is generally 3~100 microns, and fiber sintered felt is relatively soft and cannot be filtered under high pressure. It generally needs to be used with other filter materials.

[0004] The filter material obtained by sintering special powder is obtained by sintering metal powder. When the existing fluid is filtered using the filter material, the filter material is generally sintered into a plate shape and then the fluid is filtered. In the filtration process, in order to ensure the filtration effect, a high-mesh filter material is generally used to filter the fluid, which is prone to blockage and affects the filtration efficiency. After blockage, the complex pore structure of the filter material may make it difficult for the cleaning agent to fully penetrate and flush out the internal particles. In addition, since the pore size on the filter material is relatively uniform, fine particles are prone to accumulation and compaction during the backwashing process. The filter material can only be replaced, which affects the service life of the filter material and leads to an increase in production costs.

[0005] Therefore, how to provide a filter element that can quickly filter the fluid, ensure the filtering efficiency, and reduce the probability of blockage is a technical problem that urgently needs to be solved. Utility Model Content

[0006] The purpose of the utility model is to provide a fluid filter plate to solve the problem that the existing filter material in the background technology is easy to be blocked, affecting the filtering efficiency, and it is difficult to backwash the filter material, resulting in a short service life of the filter material and an increase in production costs.

[0007] In order to achieve the above-mentioned purpose, the utility model proposes a fluid filter plate, which includes a main body plate, filter holes evenly distributed in the main body plate, fixedly arranged in the filter holes and formed as an integral part with the main body plate, a connecting structure arranged on the main body plate, a filter sintered felt detachably mounted on the top surface of the main body plate through the connecting structure, and a through hole arranged on the main body plate, the opening direction of the through hole is opposite to the opening direction of the filter hole, and the opening direction of the filter hole is from the top surface of the main body plate to the bottom surface.

[0008] Optionally, the filter element is arranged in layers, and the pore size of the filter element decreases from the filter sintered felt to the bottom surface of the main plate, so as to perform step-by-step filtration on the fluid. The filter element is formed by sintering metal powder; the fluid flows into the filter element through the filter sintered felt and finally flows out through the through hole.

[0009] Optionally, the filter hole is a blind hole, and the filter element is fixedly connected to the main plate through a sintering process to form an integrated structure; the main plate is made of metal material.

[0010] Optionally, the aperture of the filter hole is larger than the aperture of the through hole; and the main body plate is made of stainless steel.

[0011] Optionally, the depth of the filter hole is 85%-90% of the thickness of the main plate; the diameter of the through hole is 5%-10% of the diameter of the filter hole.

[0012] Optionally, the orthographic projection area of ​​the through hole connecting each of the filter holes on the bottom surface of the main body plate is not less than 50% of the orthographic projection area of ​​the filter hole on the bottom surface of the main body plate.

[0013] Optionally, the filter element includes a first filter layer, a second filter layer and a third filter layer arranged in the filter hole, the second filter layer is located between the first filter layer and the third filter layer, the first filter layer is located at the bottom of the filter hole, and the third filter layer is located at the hole mouth of the filter hole.

[0014] Optionally, the mesh number of the first filter layer is greater than that of the second filter layer, and the mesh number of the second filter layer is greater than that of the third filter layer; the first filter layer, the second filter layer and the third filter layer are all made of ceramic powder or metal powder through a sintering process.

[0015] Optionally, the thicknesses of the first filter layer, the second filter layer and the third filter layer are all equal, and the sum of the thickness of the first filter layer, the thickness of the second filter layer and the thickness of the third filter layer is not greater than the depth of the filter holes.

[0016] Optionally, the connection structure includes a mounting groove arranged on the main plate, a limiting plate arranged on the mounting groove, a limiting shell installed at the mounting groove, and an avoidance hole arranged on the limiting shell, and the filter sintered felt is located at the orifice of the avoidance hole.

[0017] Optionally, the limit shell includes a left shell and a right shell, a pin arranged on the left shell, a hole arranged on the right shell, and a matching plate arranged on the left shell and the right shell; when the limit shell is installed on the main plate, the top surface of the matching plate contacts the bottom surface of the limit plate.

[0018] Compared with the prior art, the utility model provides a fluid filter plate, which has the following beneficial effects:

[0019] The fluid filter plate arranges the filter elements in layers through the arrangement of the filter elements, and arranges the aperture from large to small along the flow direction of the fluid, that is, after the fluid is initially filtered through the filter sintered felt, it contacts the filter layer with the largest aperture, and then gradually improves the filtering accuracy to perform step-by-step filtering on the fluid, thereby ensuring the speed of the fluid passing through the filter element and the filtering efficiency, and when the filter element is blocked and needs to be backblown, the blockage moves from the filter layer with a small aperture to the filter layer with a large aperture, so it is easier to blow out the blockage during backblowing, so that the filter plate can continue to be used, the service life of the filter material is extended, and the production cost is reduced.

[0020] In addition, the present application fixes the filter element on the main plate, and then installs the main plate on the equipment for filtering. Compared with directly installing the filter material on the equipment, the main plate can provide support for the filter material and increase the mechanical strength of the filter element, so that it can be used for filtering in a higher pressure and higher temperature environment, thereby further expanding the filtering range and improving the filtering efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0022] Figure 2 It is a schematic diagram of the structure of the utility model after removing the limiting shell.

[0023] Figure 3 It is a structural cross-sectional view of the filter element and the main body plate of the utility model.

[0024] Figure 4 It is a half-section view of the overall structure of the utility model.

[0025] Figure 5 This utility model Figure 4 A partial enlarged view of point A in the middle.

[0026] Figure 6It is a structural schematic diagram of the limiting shell of the utility model.

[0027] Figure 7 It is a structural schematic diagram of the left housing of the utility model.

[0028] Figure 8 This utility model Figure 7 A partial enlarged view of point B in the middle.

[0029] Fig. 9 It is a structural schematic diagram of the right shell of the utility model.

[0030] Markings in the figure: 1. Main body plate; 2. Filter hole; 3. Filter element; 31. First filter layer; 32. Second filter layer; 33. Third filter layer; 4. Connection structure; 41. Installation groove; 42. Limit plate; 43. Limit shell; 431. Left shell; 432. Right shell; 433. Plug column; 434. Plug hole; 435. Matching plate; 44. Avoidance hole; 5. Filter sintered felt; 6. Through hole. DETAILED DESCRIPTION

[0031] The following is a detailed description in conjunction with the accompanying drawings and specific implementations. In the following description, many specific details are set forth to facilitate a full understanding of the present utility. However, the present utility can be implemented in many other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present utility, so the present utility is not limited by the specific embodiments disclosed below.

[0032] A fluid filter plate of the present application can be used in occasions such as filtering high-temperature, high-pressure, high-viscosity, and highly corrosive fluids, and can certainly also be used in other similar application scenarios. A fluid filter plate is described in detail below.

[0033] See attached Figure 1 — Fig. 9 The figure shows a schematic structural diagram of a preferred embodiment of a fluid filter plate of the present application. The fluid filter plate comprises a main body plate 1, filter holes 2 evenly distributed on the main body plate 1, and fixedly arranged in the filter holes 2 and formed integrally with the main body plate 1, a connection structure 4 arranged on the main body plate 1, a filter sintered felt 5 detachably mounted on the top surface of the main body plate 1 through the connection structure 4, and a through hole 6 arranged on the main body plate 1, the opening direction of the through hole 6 is opposite to the opening direction of the filter hole 2, and the opening direction of the filter hole 2 is from the top surface of the main body plate 1 to the bottom surface.

[0034] It should be noted that the filter element 3 is arranged in layers, and the aperture of the filter element 3 decreases from the filter sintered felt 5 to the bottom surface of the main body plate 1, and the fluid is filtered in a step-by-step manner. The filter element 3 is formed by sintering gold powder; the fluid flows into the filter element 3 through the filter sintered felt 5, and finally flows out through the through hole 6. Specifically, the fluid contacts the filter sintered felt 5 from one end surface of the filter sintered felt 5 away from the filter hole 2, and the fluid is filtered for the first time through the filter sintered felt 5, and then contacts the filter element 3. The filter element 3 filters the fluid in a step-by-step manner, that is, the fluid is first coarsely filtered, and the impurities with large particles are filtered first, and then the impurities with small particles are filtered. Compared with directly filtering the impurities with small particles, the step-by-step filtration can effectively avoid the occurrence of aperture blockage when filtering large and small particles at the same time, and can reduce the influence of the particle impurities on the fluid flow rate, and improve the filtering speed. After being filtered by the filter element 3, the fluid finally flows out through the through hole 6.

[0035] The utility model forms an integrated structure between the main plate 1 and the filter element 3 so that the main plate 1 can support the filter element 3, thereby increasing the mechanical strength that the filter element 3 can withstand, and allowing the filter element 3 to work in a higher pressure environment, thereby further accelerating the flow rate of the fluid, improving the filtering speed, and improving the filtering efficiency.

[0036] See attached Figure 2 — Figure 4 As shown, in the present invention, the filter hole 2 is a blind hole, and the filter element 3 is fixedly connected to the main plate 1 through a sintering process to form an integrated structure; the aperture of the filter hole 2 is larger than the aperture of the through hole 6. It should be particularly noted that the main plate 1 is made of stainless steel, and of course it can also be made of other metal materials that are not easy to rust and are corrosion-resistant in high temperature and high pressure environments.

[0037] The utility model sets the filter hole 2 as a blind hole, which can provide support when filling and sintering metal powder, ensuring that the metal powder will not fall directly, and ensuring that the metal powder is evenly filled in the filter hole 2 during the filling and sintering process, and the step distribution of the powder is obvious, that is, powders of different mesh sizes will not mix with each other, thereby ensuring that the fluid can be filtered in a step manner.

[0038] Participate in the Figure 2 — Figure 4 As shown, in the utility model, the hole depth of the filter hole 2 is 85%-90% of the thickness of the main plate 1; the diameter of the through hole 6 is 5%-10% of the diameter of the filter hole 2; the orthographic projection area of ​​the through hole 6 connected to each filter hole 2 on the bottom surface of the main plate 1 is not less than 50% of the orthographic projection area of ​​the filter hole 2 on the bottom surface of the main plate 1.

[0039] The utility model limits the hole depth of the filter hole 2, so as to ensure that the main plate 1 can support the powder during powder filling and sintering, and avoid the main plate 1 being deformed or damaged during filling or sintering due to the thickness of the main plate 1 being insufficient to support the powder, and avoid the insufficient thickness in the filter element 3 affecting the filtering efficiency; by limiting the diameter of the through hole 6, it is ensured that after the powder is sintered, there is still part of the main plate 1 between the adjacent through holes 6 to support the filter element 3, thereby strengthening the mechanical strength of the filter element 3, so that the filter element 3 can perform filtering work under higher pressure; by limiting the connecting area of ​​the through hole 6 in each filter hole 2, it is ensured that the fluid can flow out directly after being filtered by the filter element 3, reducing the obstruction of the fluid by the main plate 1 after filtration, ensuring the size and amount of the flow path of the fluid, ensuring that the filtered fluid can be discharged quickly, avoiding obstruction to the subsequent fluid, and ensuring the filtering efficiency of the fluid.

[0040] See attached Figure 2 — Figure 4 As shown, in the utility model, the filter element 3 includes a first filter layer 31, a second filter layer 32 and a third filter layer 33 arranged in the filter hole 2, the second filter layer 32 is located between the first filter layer 31 and the third filter layer 33, the first filter layer 31 is located at the bottom of the filter hole 2, and the third filter layer 33 is located at the opening of the filter hole 2. It should be particularly noted that the mesh number of the first filter layer 31 is greater than the mesh number of the second filter layer 32, and the mesh number of the second filter layer 32 is greater than the mesh number of the third filter layer 33; the first filter layer 31, the second filter layer 32 and the third filter layer 33 are all made of ceramic powder or metal powder through a sintering process.

[0041] The utility model limits the mesh numbers of the first filter layer 31, the second filter layer 32 and the third filter layer, and matches the flow direction of the fluid, so that the fluid first contacts the third filter layer 33, then contacts the second filter layer 32, and finally contacts the first filter layer 31 for filtration, ensuring that the third filter layer first performs the first coarse filtration on the fluid, the second filter layer reduces the pore size to improve the filtration accuracy, and the third filter layer reduces the pore size again to improve the filtration accuracy again, thereby ensuring the filtration accuracy and improving the filtration speed; in addition, the three filter layers are interconnected and integrally formed, which is convenient for workers to backwash the filter element 3, and has Specifically, when a worker backwashes the filter element 3, the filtered impurities will flow from the first filter layer 31 with a small pore size to the second filter layer 32 with a large pore size, and then flow to the third filter layer 33 with the largest pore size in the filter element 3. Compared with the existing filter materials with uniform pore sizes, the filter element of the present application will not interfere with the impurities and pore size due to the same pore size during backwashing, resulting in a large amount of impurities unable to be backwashed out. As a result, the filter element 3 can wash out a large amount of filtered impurities through backwashing, so that the filter plate of the present application can be used multiple times, thereby extending the service life of the filter plate and reducing production costs.

[0042] See attached Figure 2 — Figure 4 As shown, in the present invention, the thicknesses of the first filter layer 31 , the second filter layer 32 and the third filter layer 33 are all equal, and the sum of the thicknesses of the first filter layer 31 , the second filter layer 32 and the third filter layer 33 is not greater than the depth of the filter hole 2 .

[0043] By limiting the thickness of the three filter layers, it is ensured that after the filter layers fill the filter holes 2 , they will not protrude from the top surface of the main plate 1 , thereby avoiding affecting the filter sintered felt 5 and facilitating the installation of the filter sintered felt 5 .

[0044] See attached Figure 2 — Figure 5 As shown, in the utility model, the connecting structure 4 includes a mounting groove 41 arranged on the main plate 1, a limiting plate 42 arranged on the mounting groove 41, a limiting shell 43 installed at the mounting groove 41, an avoidance hole 44 arranged on the limiting shell 43, and the filtering sintered felt 5 is located at the orifice of the avoidance hole 44.

[0045] The utility model provides an installation position for the limit shell 43 by setting the installation groove 41; limits the limit shell 43 by setting the limit plate 42 to prevent the limit shell 43 from being directly disassembled along the center line direction of the filter hole 2, ensuring that after the limit shell 43 is installed on the main plate 1, it will not be separated from the main plate 1 at will, ensuring that the limit shell 43 can limit the filter sintered felt 5; avoids the fluid by setting the avoidance hole 44, so that the fluid can contact and filter the filter sintered felt 5, ensuring that the fluid can be filtered and circulated through the filter element 3.

[0046] See attached Figure 4 — Fig. 9 As shown, in the utility model, the limiting shell 43 includes a left shell 431 and a right shell 432, a plug post 433 arranged on the left shell 431, a socket 434 arranged on the right shell 432, and a matching plate 435 arranged on the left shell 431 and the right shell 432; when the limiting shell 43 is installed on the main plate 1, the top surface of the matching plate 435 contacts the bottom surface of the limiting plate 42.

[0047] The utility model arranges the plug post 433 and the socket 434 so that the left shell 431 and the right shell 432 can be detachably connected. It should be particularly noted that the plug post 433 can be covered with a rubber sleeve to prevent the fit between the plug post 433 and the socket 434 from loosening after repeated plugging and unplugging, thereby ensuring that the left shell 431 and the right shell 432 can be tightly fitted; by the arrangement of the matching plate 435, when the left shell 431 and the right shell 432 are installed and matched on the installation groove 41, the matching plate 435 is limited by the limiting plate 42 and the bottom of the installation groove 41 and cannot move, so the filter sintered felt 5 can be limited; it should be particularly noted that force blocks can be provided on the top of the left shell 431 and the right shell 432 to facilitate workers to apply force to separate the left shell 431 and the right shell 432.

[0048] See attached Figure 1 — Fig. 9 As shown, the filtering process of the fluid in the utility model is as follows:

[0049] When the fluid needs to be filtered, the fluid flows from the filter sintered felt 5 toward the bottom surface of the main plate 1 for filtration. Specifically, the fluid first contacts the filter sintered felt 5. When flowing through the filter sintered felt 5, the filter sintered felt first performs a first coarse filtration on the fluid. The fluid after passing through the filter sintered felt 5 then contacts the filter element 3 for filtration, that is, the fluid first passes through the second coarse filtration of the third filter layer 33, then passes through the filtration of the second filter layer 32, and finally passes through the filtration of the first filter layer 31 before flowing out through the through hole 6. It should be particularly noted that in the present application, the pore size of the filter sintered felt 5 is the largest, which is larger than the pore size of the third filter layer 33, and the pore size of the third filter layer 33 is larger than the pore size of the second filter layer 32, and the pore size of the second filter layer 32 is larger than the pore size of the first filter layer 31.

[0050] When the filter sintered felt 5 needs to be cleaned or replaced, the operation is as follows: the worker disassembles the left shell 431 and the right shell 432 by means of a force block, so that the plug 433 on the left shell 431 is separated from the plug hole 434 of the right shell 432, so that the left shell 431 and the right shell 432 can be removed from the main plate 1, and the worker can clean or replace the filter sintered felt 5;

[0051] When the filter sintered felt 5 needs to be installed, the operation is as follows: the worker places the filter sintered felt on the top surface of the main body plate 1 and makes it located at the orifice of the filter hole 2, and then contacts the bottom of the left shell 431 and the right shell 432 with the bottom of the installation groove 41, and aligns the plug 433 on the left shell 431 with the plug hole 434 on the right shell 432 and inserts it until the left shell 431 and the right shell 432 are spliced ​​and matched. At this time, the top surfaces of the matching plates 435 on the left shell 431 and the right shell 432 are located in contact with the bottom surface of the limit plate 42, and the limit shell 43 is limited to ensure that the left shell 431 and the right shell 432 cannot be separated from the main body plate 1 after splicing, thereby ensuring that the limit shell 43 can limit the installation of the filter sintered felt 5.

[0052] It should be particularly noted that when the filter element 3 needs to be backwashed, the filter sintered felt 5 needs to be disassembled.

[0053] The above embodiments are descriptions of the present application, not limitations of the present application. Any solution that is a simple transformation of the present application belongs to the protection scope of the present application.

Claims

1. A fluid filter plate, characterized in that: It comprises a main body plate (1), filter holes (2) evenly distributed on the main body plate (1), a filter element (3) fixedly arranged in the filter hole (2) and integrally formed with the main body plate (1), a connection structure (4) arranged on the main body plate (1), a filter sintered felt (5) detachably mounted on the top surface of the main body plate (1) via the connection structure (4), and a through hole (6) arranged on the main body plate (1), the opening direction of the through hole (6) being opposite to the opening direction of the filter hole (2), and the opening direction of the filter hole (2) being from the top surface of the main body plate (1) to the bottom surface; The filter element (3) is arranged in layers, and the pore size of the filter element (3) decreases from the filtering sintered felt (5) towards the bottom surface of the main body plate (1), so as to perform step-by-step filtration on the fluid. The filter element (3) is formed by sintering metal powder; The fluid flows into the filter element (3) through the filter sintered felt (5) and finally flows out through the through hole (6).

2. The fluid filter plate according to claim 1, characterized in that: The filter hole (2) is a blind hole, and the filter element (3) is fixedly connected to the main plate (1) through a sintering process to form an integrated structure; the main plate (1) is made of metal material.

3. The fluid filter plate according to claim 2, characterized in that: The diameter of the filter hole (2) is larger than the diameter of the through hole (6); and the main body plate (1) is made of stainless steel.

4. The fluid filter plate according to claim 3, characterized in that: The depth of the filter hole (2) is 85%-90% of the thickness of the main plate (1); and the diameter of the through hole (6) is 5%-10% of the diameter of the filter hole (2).

5. The fluid filter plate according to claim 4, characterized in that: The orthographic projection area of ​​the through hole (6) connected to each of the filter holes (2) on the bottom surface of the main plate (1) is not less than 50% of the orthographic projection area of ​​the filter hole (2) on the bottom surface of the main plate (1).

6. The fluid filter plate according to claim 2, characterized in that: The filter element (3) comprises a first filter layer (31), a second filter layer (32) and a third filter layer (33) which are arranged in the filter hole (2); the second filter layer (32) is located between the first filter layer (31) and the third filter layer (33); the first filter layer (31) is located at the bottom of the filter hole (2); and the third filter layer (33) is located at the opening of the filter hole (2).

7. The fluid filter plate according to claim 6, characterized in that: The mesh number of the first filter layer (31) is greater than the mesh number of the second filter layer (32), and the mesh number of the second filter layer (32) is greater than the mesh number of the third filter layer (33); the first filter layer (31), the second filter layer (32) and the third filter layer (33) are all made of ceramic powder or metal powder through a sintering process.

8. The fluid filter plate according to claim 7, characterized in that: The thicknesses of the first filter layer (31), the second filter layer (32) and the third filter layer (33) are all equal, and the sum of the thickness of the first filter layer (31), the thickness of the second filter layer (32) and the thickness of the third filter layer (33) is not greater than the hole depth of the filter hole (2).

9. The fluid filter plate according to claim 1, characterized in that: The connection structure (4) comprises a mounting groove (41) arranged on the main body plate (1), a limiting plate (42) arranged on the mounting groove (41), a limiting shell (43) installed at the mounting groove (41), and an avoidance hole (44) arranged on the limiting shell (43); the filtering sintered felt (5) is located at the opening of the avoidance hole (44).

10. The fluid filter plate according to claim 9, characterized in that: The limiting shell (43) comprises a left shell (431) and a right shell (432), a plug post (433) arranged on the left shell (431), a plug hole (434) arranged on the right shell (432), and a matching plate (435) arranged on the left shell (431) and the right shell (432); when the limiting shell (43) is mounted on the main body plate (1), the top surface of the matching plate (435) contacts the bottom surface of the limiting plate (42).

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