Flange for filter

Abstract

The invention relates to the field of flanges, in particular to a filter flange which comprises a flange plate, a plurality of mounting holes for filter elements to penetrate through are formed in the surface of the flange plate at intervals, a plurality of mounting grooves for force application blocks to be embedded are formed in the inner walls of the mounting holes at intervals, and the inner walls of the mounting grooves abut against the surfaces of the force application blocks to form limiting. Through the arrangement of the mounting groove, the peripheral surface of the force application block abuts against the inner wall of the mounting groove to form limitation, so that the filter element is not easy to axially move along the axis of the mounting hole when being impacted by fluid, the filter element is fixed on the flange plate, and the filtering efficiency of the filter element on the fluid is ensured.

Description

Technical Field

[0001] The present application relates to the field of flanges, and in particular to a flange for a filter. Background Art

[0002] The filter is mainly a device that intercepts impurities in the fluid through filtering media (filter screen or filter element) to obtain clean fluid; the filter includes a shell, a flange and multiple filter elements. One end of the filter element in the axial direction is connected with multiple force blocks at intervals. The force blocks are for users to hold, so that the surface of the filter element is not easily deformed by pressure applied by the user. The surface of the flange is provided with multiple mounting holes for the filter element to pass through. The flange is connected to the inner wall of the shell, and the ends of the filter element correspond to the mounting holes one by one and are passed through, so as to realize the precise positioning of the distance between adjacent filter elements in the inner cavity of the shell.

[0003] When the filter is in use, the filter element is easily impacted by the fluid and moves axially along the axis of the installation hole, which makes the filter element easily displaced in the inner cavity of the housing, thereby reducing the filtering efficiency of the filter element for the fluid. Summary of the invention

[0004] In order to improve the problem that the filter element is easily displaced in the inner cavity of the housing, the present application provides a flange for the filter.

[0005] The present application provides a filter flange, which adopts the following technical solution: A flange for a filter comprises a flange plate, wherein a plurality of mounting holes for filter elements to pass through are arranged at intervals on the surface of the flange plate, a plurality of mounting grooves for force blocks to be embedded are arranged at intervals on the inner wall of the mounting hole, and the inner wall of the mounting groove presses against the surface of the force block to form a limit.

[0006] By adopting the above technical scheme, the ends of the filter element correspond to the mounting holes one by one and are penetrated, driving the force block to approach the mounting groove, the force block corresponds to the mounting groove one by one and is embedded, and the outer peripheral surface of the force block is pressed against the inner wall of the mounting groove to form a limit, so that the filter element is not easy to move axially along the axis of the mounting hole when impacted by the fluid, thereby realizing the fixation of the filter element on the flange, thereby ensuring the filtering efficiency of the filter element for the fluid.

[0007] Optionally, a sealing groove for embedding a sealing ring is opened on the surface of the flange, the inner wall of the sealing groove and the inner wall of the shell can clamp both sides of the sealing ring to form a seal, and the sealing groove and the installation groove are located on the same side of the flange.

[0008] By adopting the above technical solution, the sealing ring is embedded in the sealing groove, and the inner wall of the sealing groove abuts against the surface of the sealing ring to form a limit, so that the sealing ring is not easily offset on the surface of the flange, thereby realizing the positioning of the sealing ring on the flange; when the flange is embedded in the inner cavity of the shell, the inner wall of the sealing groove and the inner cavity wall of the shell clamp the two sides of the sealing ring to form a seal, thereby increasing the sealing stability between the flange surface and the inner cavity wall of the shell.

[0009] Optionally, a positioning groove for embedding the end of the pipe cap is formed on the surface of the flange away from the sealing groove, and a connecting hole for passing the pipeline is formed on the surface of the flange.

[0010] By adopting the above technical scheme, when a connecting hole is penetrated at the end of the pipeline, the outer peripheral surface of the pipeline abuts against the inner wall of the connecting hole to form a positioning, thereby improving the convenience of welding and fixing between the pipeline and the flange; at the same time, the end of the pipe cap is embedded in the positioning groove, and the inner wall of the positioning groove abuts against the outer wall of the pipe cap to achieve positioning, so that the pipe cap is not easy to shift on the surface of the flange, which is convenient for the staff to weld and fix the abutment between the pipe cap and the flange, thereby improving the installation efficiency of the flange for the filter.

[0011] Optionally, the flange is connected to a clamping assembly, which includes a plurality of clamping airbags, which correspond one-to-one to the mounting grooves and are connected to the inner walls of the mounting grooves, and the surfaces of the clamping airbags can clamp against the surface of the force block to form a limit.

[0012] By adopting the above technical solution, the tightening airbag is connected to the inner wall of the mounting groove. When the end of the force block is embedded in the mounting groove, the surface of the force block and the inner wall of the mounting groove squeeze the two sides of the tightening airbag to form a limit. The tightening airbag is deformed under pressure, reducing the wear between the inner wall of the mounting groove and the surface of the force block, thereby extending the service life of the filter flange.

[0013] Optionally, the clamping assembly also includes a clamping ring and a positioning ring plug, the end of the positioning ring plug is coaxially connected to the surface of the clamping ring, and the surface of the flange is provided with a positioning cavity for the sliding of the positioning ring plug. When the positioning ring plug is embedded in the positioning cavity, the surface of the positioning ring plug presses against the inner wall of the positioning cavity to form a limit, and the end face of the clamping ring and the bottom wall of the mounting groove clamp the two sides of the force block to form a limit.

[0014] By adopting the above technical solution, when the force block corresponds to the installation groove one by one and is embedded, the end of the positioning ring plug is embedded in the positioning cavity, and the end face of the clamping ring and the bottom wall of the installation groove clamp the two sides of the force block to form a limit, thereby fixing the two ends of the force block, making it difficult for the force block to separate from the installation groove, thereby improving the limit stability of the filter element on the flange.

[0015] Optionally, the positioning cavity is connected to and pressed against the inner cavity of the airbag.

[0016] By adopting the above technical solution, when the end of the positioning ring plug is embedded in the positioning cavity, the outer peripheral surface of the positioning ring plug presses against the inner wall of the positioning cavity to form a seal. When the positioning ring plug continues to approach the flange along the inner wall of the positioning cavity, the air pressure in the positioning cavity increases, and the air in the positioning cavity enters the inner cavity of the pressing airbag. The surface of the pressing airbag is pressurized and expanded and presses against the surface of the force block to form a limit, thereby increasing the pressing force between the force block and the pressing airbag.

[0017] Optionally, the locking assembly also includes a locking block and a locking rod, the end of the locking rod is connected to the surface of the flange, and the end face of the locking ring facing the locking rod is provided with a locking groove for the end of the locking rod to be embedded in, the locking groove penetrates the outer wall of the locking ring, and the end face of the locking ring facing away from the flange is provided with a locking cavity for the locking block to slide, the sliding direction of the locking block and the axis of the flange are perpendicular to each other, the locking cavity is connected to the locking groove, and the end face of the locking rod facing the locking cavity is provided with a limiting cavity for the locking block to be embedded in, and the outer peripheral surface of the locking block can be pressed against the inner wall of the limiting cavity to form a limit.

[0018] By adopting the above technical solution, when the positioning ring plug is embedded in the positioning cavity, the end of the locking rod is penetrated by the locking groove and is located in the locking cavity, the mouth of the limiting cavity is toward the end of the locking block, the locking block slides along the inner wall of the locking cavity toward the direction close to the limiting cavity, the end of the locking block is embedded in the limiting cavity, and the outer peripheral surface of the locking block is pressed against the limiting cavity to form a limit, so that the locking ring is not easy to separate from the flange, thereby increasing the clamping force between the locking ring and the flange.

[0019] Optionally, the locking assembly further includes a limit rod, an elastic member 1 and an elastic member 2, the bottom wall of the locking cavity is provided with a sliding cavity for the limit rod to slide, the sliding direction of the limit rod and the sliding direction of the locking rod are parallel to each other, the limit rod is located between the locking block and the locking rod, the rod surface of the limit rod is provided with a sliding hole for the locking block to pass through, the sliding cavity penetrates the outer wall of the tightening ring, one end of the elastic member 1 in the elastic force direction is connected to the inner wall of the sliding cavity, the other end of the elastic member 1 in the elastic force direction is connected to the rod surface of the limit rod, the elastic member 1 has elastic force to drive the limit rod to slide in the direction away from the locking cavity, one end of the limit rod protrudes from the end surface of the tightening ring, and The other end of the limit rod has a tendency to protrude from the bottom wall of the locking cavity, one end of the elastic part in the elastic direction is connected to the inner wall of the locking cavity, and the other end of the elastic part in the elastic direction is connected to the surface of the locking block, and the elastic part has a tendency to elastically drive the locking block to slide in the direction close to the locking rod, and the surface of the locking block presses against the rod surface of the limit rod; when the surface of the locking ring presses against the surface of the flange, the surface of the flange presses against the rod surface of the limit rod and drives the limit rod close to the locking cavity, the sliding hole is connected to the limiting cavity, and the abutment effect between the limit rod surface and the locking block surface disappears, and the elastic force of the elastic part drives the end of the locking block to pass through the sliding hole and embed into the limiting cavity.

[0020] By adopting the above technical scheme, the elastic force of the elastic member drives the limit rod to slide in the direction away from the locking cavity, one end of the limit rod protrudes from the end of the clamping ring, and the other end of the limit rod protrudes from the bottom wall of the locking cavity. When the locking rod is embedded in the locking groove and the surface of the clamping ring is pressed against the surface of the flange, the surface of the flange abuts the end of the limit rod and drives the limit rod to approach the locking cavity along the inner wall of the sliding cavity. The sliding hole is connected to the limit cavity, and the abutment effect between the limit rod surface and the surface of the locking block disappears. The elastic force of the elastic member drives the end of the locking block to pass through the sliding hole and embed it into the limit cavity, thereby realizing the directional sliding of the locking block in the locking cavity. There is no need for the staff to manually drive the locking block to slide on the inner wall of the locking cavity, thereby improving the installation efficiency of the flange for the filter.

[0021] Optionally, a guide surface is provided on the end surface of the locking block abutting against the limiting rod, and the guide surface is in the shape of a circular arc protrusion, and the guide surface guides the locking block to pass through a sliding hole.

[0022] By adopting the above technical solution, when the surface of the flange abuts against the surface of the limit rod and drives the limit rod to slide toward the direction close to the locking cavity, the guide surface abuts against the surface of the limit rod and guides the locking block to penetrate the sliding hole, thereby reducing the wear between the limit rod and the locking block, thereby extending the service life of the filter flange.

[0023] Optionally, the locking assembly further includes a limiting airbag, an elastic member and an inflation piston, the limiting airbag being connected to the inner wall of the locking groove, the inner wall of the locking groove and the rod surface of the locking rod being able to clamp both sides of the limiting airbag to form a limit, the limiting cavity runs through both sides of the locking rod, and the locking cavity is provided with an inflation flow channel for the inflation piston to slide toward the inner wall of the limiting cavity, the inflation flow channel is connected to the inner cavity of the limiting airbag, one end of the elastic member in the elastic force direction is connected to the inner wall of the inflation flow channel, and the other end of the elastic member in the elastic force direction is connected to the surface of the inflation piston. The elastic member three has elastic force driving the inflation piston to slide toward the direction approaching the locking cavity, and the end of the inflation piston tends to protrude from the inner wall of the locking cavity, and the elastic coefficient of the elastic member two is greater than the elastic coefficient of the elastic member three; when the sliding hole is connected to the limiting cavity, the elastic force of the elastic member two drives the end of the locking block to pass through the sliding hole and the limiting cavity in sequence and embed into the inflation flow channel, driving the inflation piston close to the inflation flow channel, and the air in the inflation flow channel enters the inner cavity of the limiting airbag, and the surface of the limiting airbag is pressurized and expanded and presses against the surface of the locking rod to form a limit.

[0024] By adopting the above technical scheme, when the sliding hole is connected to the limiting cavity, the elastic coefficient of the second elastic member is greater than the elastic coefficient of the third elastic member, and the elastic force of the second elastic member drives the end of the locking block to pass through the sliding hole and the limiting cavity in sequence and squeeze the inflation piston, driving the inflation piston to slide along the inner wall of the inflation channel in the direction away from the locking cavity, and the end of the locking block is embedded in the inflation channel to achieve the limitation of the two ends of the locking block in the length direction, so that the locking block is not easy to separate from the locking cavity, thereby increasing the clamping force between the clamping ring and the flange; at the same time, the inflation channel is connected to the inner cavity of the limiting airbag, the air pressure in the inflation channel increases, the air in the inflation channel enters the inner cavity of the limiting airbag, the surface of the limiting airbag is pressurized and expanded and presses against the surface of the locking rod to form a limit, so that the locking rod is not easy to deviate on the inner wall of the locking groove, further increasing the clamping force between the clamping ring and the flange.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. The installation groove is set up, and the outer peripheral surface of the force block is pressed against the inner wall of the installation groove to form a limit, so that the filter element is not easy to move axially along the axis of the installation hole when impacted by the fluid, so as to achieve the fixation of the filter element on the flange, thereby ensuring the filtration efficiency of the filter element for the fluid; 2. The setting of the sealing groove, the inner wall of the sealing groove and the inner wall of the shell clamp the two sides of the sealing ring to form a seal, which increases the sealing stability between the flange surface and the inner wall of the shell; 3. The setting of the positioning groove makes it difficult for the pipe cap to shift on the surface of the flange, which is convenient for the staff to weld and fix the abutment between the pipe cap and the flange, thereby improving the installation efficiency of the filter flange. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure in Example 1 of the present application.

[0027] Figure 2 It is a schematic diagram of the overall structure in Example 1 of the present application, mainly showing the positioning groove.

[0028] Figure 3 It is a schematic diagram of the overall structure in Example 2 of the present application.

[0029] Figure 4 It is a partial cross-sectional view in Example 2 of the present application.

[0030] Explanation of the accompanying drawings: 1. Flange; 11. Mounting hole; 12. Mounting groove; 13. Sealing groove; 14. Positioning groove; 15. Positioning cavity; 16. Sliding cavity; 17. Inflation flow channel; 18. Pressure cavity; 19. Connecting hole; 2. Clamping assembly; 21. Clamping ring; 211. Locking groove; 212. Locking cavity; 22. Positioning ring plug; 23. Locking block; 231. Guide surface; 24. Locking rod; 241. Limiting cavity; 25. Limiting rod; 251. Sliding hole; 26. Elastic part one; 27. Elastic part two; 28. Limiting airbag; 29. ​​Elastic part three; 210. Inflating piston; 213. Clamping airbag; 3. Pressure assembly; 31. Pressure rod; 311. Buffer surface; 32. Elastic part four. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-4 This application is described in further detail.

[0032] The embodiment of the present application discloses a flange for a filter.

[0033] Example 1 Reference Figure 1 The filter flange includes a flange 1, and a plurality of mounting holes 11 for the filter element to pass through are arranged at intervals on the surface of the flange 1. The plurality of mounting holes 11 are evenly distributed around the axis of the flange 1, and the axes of the mounting holes 11 and the flange 1 are parallel to each other. The mounting holes 11 pass through both sides of the flange 1 along their own axes, and a plurality of mounting grooves 12 for the force blocks to be embedded are arranged at intervals on the inner wall of one end in the axis direction of the mounting holes 11. The number of the mounting grooves 12 can be one, two or more. In the embodiment of the present application, the number of the mounting grooves 12 is two, and the two mounting grooves 12 are evenly distributed around the axis of the mounting hole 11. The inner wall of the mounting groove 12 can be pressed against the surface of the force block to form a limit, so that the filter element is not easy to move axially along the axis of the mounting hole 11 when impacted by the fluid, thereby realizing the fixation of the filter element on the flange 1, thereby ensuring the filtering efficiency of the filter element for the fluid.

[0034] Reference Figure 1 A sealing groove 13 for embedding the sealing ring is coaxially opened on the surface of the flange 1. The sealing groove 13 and the mounting groove 12 are located on the same side of the axial direction of the flange 1. The inner wall of the sealing groove 13 abuts against the outer wall of the sealing ring to form a limit, so that the sealing ring is not easily displaced on the surface of the flange 1, thereby improving the limiting stability of the sealing ring on the surface of the flange 1; when the flange 1 is embedded in the inner cavity of the shell, the inner wall of the shell and the inner wall of the sealing groove 13 clamp the two sides of the sealing ring to form a seal, thereby improving the sealing stability between the flange 1 and the shell.

[0035] Reference Figure 1 and Figure 2A positioning groove 14 for embedding the end of the pipe cap is coaxially provided on the surface of the flange 1 away from the sealing groove 13. The inner wall of the positioning groove 14 abuts against the surface of the pipe cap to form a positioning, so as to facilitate the welding and fixing of the pipe cap on the surface of the flange 1, thereby improving the installation efficiency of the filter flange; a connecting hole 19 for the pipeline to pass through is provided on the surface of the flange 1, and the axis of the connecting hole 19 is parallel to the axis of the flange 1. The connecting hole 19 passes through both sides of the axis direction of the flange 1 along its own axis, and the outer peripheral surface of the pipeline abuts against the inner wall of the connecting hole 19 to form a positioning, so as to facilitate the welding and fixing of the pipeline on the surface of the flange 1, thereby further improving the installation efficiency of the filter flange.

[0036] The implementation principle of a flange for a filter in Example 1 of the present application is as follows: a mounting hole 11 is coaxially provided at the end of the filter element away from the force block, the filter element slides along the axis of the mounting hole 11, driving the force block to approach the mounting groove 12, driving the filter element to rotate on the inner wall of the mounting hole 11, making the force blocks correspond one by one to the mounting groove 12, the filter element continues to slide along the axis of the mounting hole 11, the force block is embedded in the mounting groove 12, and the inner wall of the mounting groove 12 is pressed against the surface of the force block to form a limit, so that the filter element is not easy to move axially along the axis of the mounting hole 11 when impacted by the fluid, thereby achieving the fixation of the filter element on the flange plate 1, thereby ensuring the filtering efficiency of the filter element for the fluid.

[0037] Example 2 Reference Figure 3 and Figure 4 The difference between Example 2 and Example 1 is that the flange 1 is equipped with a tightening assembly 2, which can limit the force block in the installation groove 12. The tightening assembly 2 includes a tightening ring 21, a positioning ring plug 22, a locking block 23, a locking rod 24, a limiting rod 25, an elastic member 26, an elastic member 27, a limiting airbag 28, an elastic member 3 29, an inflatable piston 210 and a plurality of tightening airbags 213; the material of the tightening airbag 213 can be rubber or silicone. In the embodiment of the present application, the material of the clamping airbag 213 is rubber, which has a certain deformation ability. The clamping airbag 213 corresponds to the mounting groove 12 one by one and is installed on the inner wall of the mounting groove 12. When the force block is embedded in the mounting groove 12, the surface of the force block and the inner wall of the mounting groove 12 clamp the two sides of the clamping airbag 213 to form a limit. The surface of the clamping airbag 213 is compressed and deformed, reducing the wear between the force block and the inner wall of the mounting groove 12, thereby ensuring the limit stability of the force block in the mounting groove 12.

[0038] Reference Figure 3 and Figure 4The material of the positioning ring plug 22 can be rubber or silicone. In the embodiment of the present application, the material of the positioning ring plug 22 is rubber, which has a certain deformation ability. The end of the positioning ring plug 22 is coaxially fixed on the surface of the tightening ring 21. The surface of the flange 1 is coaxially provided with a positioning cavity 15 for the sliding movement of the positioning ring plug 22. The sliding direction of the positioning ring plug 22 is parallel to the axis of the flange 1, and the positioning cavity 15 is connected to the inner cavity of the tightening airbag 213; when the end of the positioning ring plug 22 is embedded in the positioning cavity 15, the outer periphery of the positioning ring plug 22 The surface is pressed against the inner wall of the positioning cavity 15 to form a seal, the air pressure in the positioning cavity 15 increases, the air in the positioning cavity 15 enters the inner cavity of the pressing airbag 213, the surface of the pressing airbag 213 is pressurized and expanded, and presses against the surface of the force block to form a limit; at the same time, the surface of the pressing ring 21 is pressed against the surface of the flange 1, and the surface of the pressing ring 21 facing the mounting groove 12 and the bottom wall of the mounting groove 12 clamp the two sides of the force block to form a limit, so that the force block is not easy to deviate in the mounting groove 12, thereby improving the limit stability of the force block in the mounting groove 12.

[0039] Reference Figure 3 and Figure 4 The end of the locking rod 24 is connected to the surface of the flange 1 facing the locking ring 21, the axis of the locking rod 24 is parallel to the axis of the flange 1, and a locking groove 211 for the sliding of the locking rod 24 is provided on the surface of the locking ring 21 facing the locking rod 24. The depth direction of the locking groove 211 is parallel to the axis of the locking ring 21, and the locking groove 211 penetrates both sides of the locking ring 21 along its own depth direction. A locking cavity 212 for the sliding of the locking block 23 is provided on the end surface of the locking ring 21 away from the flange 1, and the sliding direction of the locking block 23 is perpendicular to the axis of the locking ring 21, and the locking cavity 212 is connected to the locking groove 211. A limiting cavity 241 for the locking block 23 to pass through is provided on the rod surface of the locking rod 24 facing the locking cavity 212.

[0040] Reference Figure 3 and Figure 4The limiting cavity 241 passes through both sides of the locking rod 24 in the depth direction, and a sliding cavity 16 for the limiting rod 25 to slide is provided on the bottom wall of the locking cavity 212. The sliding direction of the limiting rod 25 and the sliding direction of the locking rod 24 are parallel to each other. The limiting rod 25 is located on the side of the locking rod 24 close to the locking block 23. The depth direction of the sliding cavity 16 and the axis of the locking ring 21 are parallel to each other. The sliding cavity 16 passes through the outer wall of the locking ring 21 along its own depth direction. A sliding hole 251 for the locking block 23 to pass through is provided on the rod surface of the limiting rod 25. The axis of the sliding hole 251 and the depth direction of the limiting cavity 241 are parallel to each other. Parallel, the sliding hole 251 passes through both sides of the limit rod 25 along its own axis. The elastic member 26 can be a compression spring or a tension spring. In the embodiment of the present application, the elastic member 26 is a compression spring with a certain deformation ability. One end of the elastic member 26 in the elastic direction is connected to the inner wall of the sliding cavity 16, and the other end of the elastic member 26 in the elastic direction is connected to the rod surface of the limit rod 25. The elastic member 26 has an elastic force to drive the limit rod 25 to slide in the direction away from the locking cavity 212. One end of the limit rod 25 protrudes from the end face of the tightening ring 21, and the other end of the limit rod 25 protrudes from the bottom wall of the locking cavity 212.

[0041] Reference Figure 3 and Figure 4 The elastic member 27 can be a compression spring or a tension spring. In the embodiment of the present application, the elastic member 27 is a compression spring with a certain deformation ability. One end of the elastic member 27 in the elastic direction is connected to the inner wall of the locking cavity 212, and the other end of the elastic member 27 in the elastic direction is connected to the surface of the locking block 23. The elastic member 27 is located on the side of the locking block 23 away from the limiting rod 25. The elastic member 27 has the elastic force to drive the locking block 23 to slide in the direction close to the locking rod 24, and the end of the locking block 23 tends to press against the rod surface of the limiting rod 25.

[0042] Reference Figure 3 and Figure 4 The end surface of the locking block 23 that abuts against the limiting rod 25 is provided with a guide surface 231, and the guide surface 231 is in the shape of an arc protrusion. The guide surface 231 can guide the locking block 23 to pass through the sliding hole 251, thereby reducing the wear between the locking block 23 and the limiting rod 25, thereby extending the service life of the locking block 23 and the limiting rod 25; when the positioning ring plug 22 is embedded in the positioning cavity 15, and the end of the locking rod 24 passes through the locking groove 211 and is located in the locking cavity 212, the surface of the clamping ring 21 is pressed against the surface of the flange 1, and the flange The surface of the disk 1 abuts against the rod surface of the limit rod 25 and drives the limit rod 25 to slide in the direction close to the locking cavity 212. The sliding hole 251 is connected to the limiting cavity 241, and the tightening effect between the rod surface of the limit rod 25 and the surface of the locking block 23 disappears. The elastic force of the elastic member 27 drives the end of the locking block 23 to pass through the sliding hole 251 and the limiting cavity 241 in sequence, so that the locking rod 24 is not easy to deviate in the locking groove 211, and the surface of the locking ring 21 is pressed against the surface of the flange 1, thereby improving the limiting stability of the force block in the mounting groove 12.

[0043] Reference Figure 3 and Figure 4 The material of the limiting airbag 28 can be rubber or silicone. In the embodiment of the present application, the material of the limiting airbag 28 is rubber, which has a certain deformation ability. One side of the limiting airbag 28 is connected to the inner wall of the locking groove 211, and the other side of the limiting airbag 28 can press against the rod surface of the locking rod 24. The rod surface of the locking rod 24 and the inner wall of the locking groove 211 squeeze the two sides of the limiting airbag 28 and drive the limiting airbag 28 to deform, thereby reducing the wear between the rod surface of the locking rod 24 and the inner wall of the locking groove 211.

[0044] Reference Figure 3 and Figure 4 The material of the inflatable piston 210 can be rubber or silicone. In the embodiment of the present application, the material of the inflatable piston 210 is rubber, which has a certain deformation ability. The inner wall of the locking chamber 212 toward the limiting chamber 241 is provided with an inflation channel 17 for the inflatable piston 210 to slide. The inflation channel 17 is connected to the inner cavity of the limiting airbag 28. The elastic member 3 29 can be a compression spring or a tension spring. In the embodiment of the present application, the elastic member 3 29 is a compression spring, which has a certain deformation ability. The elastic coefficient of the elastic member 3 29 is smaller than the elastic coefficient of the elastic member 27. One end of the elastic member 3 29 in the elastic direction is connected to the surface of the inflatable piston 210, and the other end of the elastic member 3 29 in the elastic direction is connected to the inner wall of the inflation channel 17. The elastic member 3 29 has an elastic force to drive the inflatable piston 210 to slide in the direction close to the locking chamber 212, and the end of the inflatable piston 210 protrudes from the inner wall of the locking chamber 212. The inflation channel 17 is embedded in the end of the locking block 23.

[0045] Reference Figure 3 and Figure 4 When the sliding hole 251 is connected to the limiting cavity 241, the elastic force of the second elastic member 27 drives the end of the locking block 23 to pass through the sliding hole 251 and the limiting cavity 241 in sequence and abut the surface of the inflatable piston 210, and the locking block 23 drives the inflatable piston 210 to slide along the inner wall of the inflatable flow channel 17 in the direction away from the abutting cavity, and the end of the locking block 23 is embedded in the inflatable flow channel 17, and the inner wall of the inflatable flow channel 17 abuts against the surface of the locking block 23 to form a limit, so that the locking block 23 cannot It is easy to detach from the locking cavity 212, thereby improving the limiting stability of the locking block 23 in the locking cavity 212; at the same time, the air pressure in the inflation flow channel 17 increases, and the air in the inflation flow channel 17 enters the inner cavity of the limiting airbag 28. The surface of the limiting airbag 28 is pressurized and expanded and presses against the rod surface of the locking rod 24 to form a limit, increasing the pressing force between the rod surface of the locking rod 24 and the surface of the limiting airbag 28, thereby improving the limiting stability of the locking rod 24 in the locking groove 211.

[0046] Reference Figure 3 and Figure 4The flange 1 is connected to a pressure assembly 3, which can squeeze the sealing ring in the sealing groove 13 to deform. The pressure assembly 3 includes a pressure rod 31 and an elastic member 32. The inner wall of the positioning cavity 15 is provided with a pressure cavity 18 for the pressure rod 31 to slide. The sliding direction of the pressure rod 31 and the sliding direction of the locking block 23 are parallel to each other. The pressure cavity 18 connects the positioning cavity 15 and the sealing groove 13. The elastic member 32 can be a compression spring or a tension spring. In the embodiment of the present application, the elastic member 32 is a compression spring with a certain deformation ability. One end of the elastic member 32 in the elastic force direction is connected to the inner wall of the pressure cavity 18, and the other end of the elastic member 32 in the elastic force direction is connected to the rod surface of the pressure rod 31. The elastic member 32 has the elastic force to drive the pressure rod 31 to slide in the direction close to the positioning cavity 15, and the end of the pressure rod 31 has a tendency to protrude from the inner wall of the positioning cavity 15.

[0047] Reference Figure 3 and Figure 4 The end of the pressure rod 31 protruding from the positioning cavity 15 is provided with a buffer surface 311, and the buffer surface 311 is in the shape of a circular arc protrusion. When the end of the positioning ring plug 22 is embedded in the positioning cavity 15, the buffer surface 311 abuts against the surface of the positioning ring plug 22 and guides the pressure rod 31 to slide along the inner wall of the pressure cavity 18 toward the sealing groove 13. The end of the pressure rod 31 protruding from the sealing groove 13 squeezes the sealing ring, and the sealing ring is deformed under pressure, thereby increasing the clamping force between the outer wall of the sealing ring and the inner wall of the sealing groove 13, making it difficult for the sealing ring to separate from the sealing groove 13, thereby improving the limiting stability of the sealing ring in the sealing groove 13.

[0048] The implementation principle of a filter flange in Example 2 of the present application is as follows: when the positioning ring plug 22 is embedded in the positioning cavity 15, and the end of the locking rod 24 is penetrated by the locking groove 211 and is located in the locking cavity 212, the surface of the clamping ring 21 is pressed against the surface of the flange 1, and the clamping ring 21 is pressed against the end face of the mounting groove 12 and the bottom wall of the mounting groove 12 on both sides of the force-applying block to form a limit, so that the force-applying block is not easy to deviate in the mounting groove 12, thereby improving the limit stability of the force-applying block in the mounting groove 12; at the same time, the surface of the flange 1 abuts against the rod surface of the limiting rod 25 and drives the limiting rod 25 to slide in the direction close to the locking cavity 212, the sliding hole 251 is connected to the limiting cavity 241, and the clamping effect between the rod surface of the limiting rod 25 and the surface of the locking block 23 disappears, and the elastic force of the elastic member 27 drives the end of the locking block 23 to move in sequence The sliding hole 251 and the limiting cavity 241 are penetrated and abut the surface of the inflation piston 210. The locking block 23 drives the inflation piston 210 to slide along the inner wall of the inflation channel 17 in the direction away from the abutting cavity. The end of the locking block 23 is embedded in the inflation channel 17. The inner wall of the inflation channel 17 abuts against the surface of the locking block 23 to form a limit, so that the locking block 23 is not easy to escape from the locking cavity 212, thereby improving the limiting stability of the locking block 23 in the locking cavity 212; at the same time, the air pressure in the inflation channel 17 increases, and the air in the inflation channel 17 enters the inner cavity of the limiting airbag 28. The surface of the limiting airbag 28 is pressurized and expanded and abuts against the rod surface of the locking rod 24 to form a limit, thereby increasing the abutting force between the rod surface of the locking rod 24 and the surface of the limiting airbag 28, thereby improving the limiting stability of the locking rod 24 in the locking groove 211.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A flange for a filter, characterized in that: It comprises a flange (1), wherein a plurality of installation holes (11) for filter elements to pass through are arranged at intervals on the surface of the flange (1), a plurality of installation grooves (12) for force blocks to be embedded are arranged at intervals on the inner wall of the installation hole (11), and the inner wall of the installation groove (12) is pressed against the surface of the force block to form a limit.

2. The filter flange according to claim 1, characterized in that: The surface of the flange (1) is provided with a sealing groove (13) for the sealing ring to be embedded, the inner wall of the sealing groove (13) and the inner wall of the shell body can clamp the two sides of the sealing ring to form a seal, and the sealing groove (13) and the installation groove (12) are located on the same side of the flange (1).

3. The filter flange according to claim 2, characterized in that: A positioning groove (14) for the end of the pipe cap to be embedded is provided on the surface of the flange (1) away from the sealing groove (13), and a connecting hole (19) for the pipe to pass through is provided on the surface of the flange (1).

4. The filter flange according to claim 1, characterized in that: The flange (1) is connected to a clamping assembly (2), the clamping assembly (2) comprising a plurality of clamping airbags (213), the clamping airbags (213) corresponding one to one with the mounting grooves (12) and connected to the inner wall of the mounting grooves (12), and the surface of the clamping airbags (213) can be clamped against the surface of the force applying block to form a limit.

5. The filter flange according to claim 4, characterized in that: The clamping assembly (2) also includes a clamping ring (21) and a positioning ring plug (22), the end of the positioning ring plug (22) is coaxially connected to the surface of the clamping ring (21), and the surface of the flange (1) is provided with a positioning cavity (15) for the positioning ring plug (22) to slide. When the positioning ring plug (22) is embedded in the positioning cavity (15), the surface of the positioning ring plug (22) is pressed against the inner wall of the positioning cavity (15) to form a limit, and the end face of the clamping ring (21) and the bottom wall of the mounting groove (12) clamp the two sides of the force block to form a limit.

6. The filter flange according to claim 5, characterized in that: The positioning cavity (15) is in communication with the inner cavity of the airbag (213).

7. The filter flange according to claim 5, characterized in that: The clamping assembly (2) further comprises a locking block (23) and a locking rod (24); the end of the locking rod (24) is connected to the surface of the flange (1); the end surface of the clamping ring (21) facing the locking rod (24) is provided with a locking groove (211) for the end of the locking rod (24) to be embedded; the locking groove (211) penetrates the outer wall of the clamping ring (21); the end surface of the clamping ring (21) facing away from the flange (1) is provided with a locking groove (211) for the end of the locking rod (24) to be embedded A locking cavity (212) in which the locking block (23) slides, the sliding direction of the locking block (23) and the axis of the flange (1) are perpendicular to each other, the locking cavity (212) is connected to the locking groove (211), and the locking rod (24) is provided with a limiting cavity (241) on the end surface facing the locking cavity (212) for the locking block (23) to be embedded, and the outer peripheral surface of the locking block (23) can be pressed against the inner wall of the limiting cavity (241) to form a limit.

8. The filter flange according to claim 7, characterized in that: The locking assembly further comprises a limit rod (25), an elastic member 1 (26) and an elastic member 2 (27); the bottom wall of the locking cavity (212) is provided with a sliding cavity (16) for the limit rod (25) to slide; the sliding direction of the limit rod (25) and the sliding direction of the locking rod (24) are parallel to each other; the limit rod (25) is located between the locking block (23) and the locking rod (24); the surface of the limit rod (25) is provided with a sliding cavity for the locking block (23) to pass through. The sliding cavity (16) passes through the outer wall of the clamping ring (21); one end of the elastic member (26) in the elastic direction is connected to the inner wall of the sliding cavity (16); the other end of the elastic member (26) in the elastic direction is connected to the rod surface of the limiting rod (25); the elastic member (26) has an elastic force to drive the limiting rod (25) to slide in a direction away from the locking cavity (212); one end of the limiting rod (25) protrudes from the end surface of the clamping ring (21), and the limiting rod (25) is provided with a plurality of movable holes (251); the ... sliding cavity (16); the The other end of the limiting rod (25) has a tendency to protrude from the bottom wall of the locking cavity (212); one end of the elastic member 2 (27) in the elastic direction is connected to the inner wall of the locking cavity (212); the other end of the elastic member 2 (27) in the elastic direction is connected to the surface of the locking block (23); the elastic member 2 (27) has a tendency to elastically drive the locking block (23) to slide in a direction close to the locking rod (24), and the surface of the locking block (23) is pressed against the rod surface of the limiting rod (25); when the pressing force When the surface of the tightening ring (21) is pressed against the surface of the flange (1), the surface of the flange (1) abuts against the rod surface of the limiting rod (25) and drives the limiting rod (25) close to the locking cavity (212), the sliding hole (251) is connected to the limiting cavity (241), the abutting effect between the surface of the limiting rod (25) and the surface of the locking block (23) disappears, and the elastic force of the second elastic member (27) drives the end of the locking block (23) to penetrate the sliding hole (251) and embed into the limiting cavity (241).

9. The filter flange according to claim 8, characterized in that: The end surface of the locking block (23) abutting against the limiting rod (25) is provided with a guide surface (231), the guide surface (231) is in the shape of a circular arc protrusion, and the guide surface (231) guides the locking block (23) to penetrate the sliding hole (251).

10. The filter flange according to claim 8, characterized in that: The locking assembly further comprises a limiting airbag (28), an elastic member three (29) and an inflating piston (210); the limiting airbag (28) is connected to the inner wall of the locking groove (211); the inner wall of the locking groove (211) and the rod surface of the locking rod (24) can clamp the two sides of the limiting airbag (28) to form a limit; the limiting cavity (241) runs through the two sides of the locking rod (24); the locking cavity (212) is provided with an inflating flow channel (17) for the inflating piston (210) to slide on the inner wall of the limiting cavity (241); the inflating flow channel (17) is connected to the inner cavity of the limiting airbag (28); one end of the elastic member three (29) in the elastic force direction is connected to the inner wall of the inflating flow channel (17); the other end of the elastic member three (29) in the elastic force direction is connected to the surface of the inflating piston (210); The elastic member three (29) has an elastic force driving the inflation piston (210) to slide in a direction close to the locking cavity (212), and the end of the inflation piston (210) tends to protrude from the inner wall of the locking cavity (212), and the elastic coefficient of the elastic member two (27) is greater than the elastic coefficient of the elastic member three (29); when the sliding hole (251) is connected to the limiting cavity (241), the elastic force of the elastic member two (27) drives the end of the locking block (23) to pass through the sliding hole (251) and the limiting cavity (241) in sequence and embed into the inflation flow channel (17), driving the inflation piston (210) close to the inflation flow channel (17), and the air in the inflation flow channel (17) enters the inner cavity of the limiting airbag (28), and the surface of the limiting airbag (28) is pressurized and expanded and pressed against the rod surface of the locking rod (24) to form a limit.

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