High-filtering-precision filter element matched installation jig

Abstract

The utility model belongs to the technical field of filter element installation jigs, and discloses a high-filtering-precision filter element matched installation jig which is used for pressing a filter element into a filter element installation groove of a valve body and comprises an air cylinder, a pressing head and a working table provided with a valve body installation table top, and the valve body is installed on the valve body installation table top of the working table. The air cylinder is installed on the workbench above the valve body, the pressing head is located above the valve body corresponding to the filter element installation groove, the upper end of the pressing head is connected with a piston rod of the air cylinder, and the pressing head is controlled by the air cylinder to press the filter element downwards, so that the filter element installation groove and the filter element form a matched sealing face. When the press-fitting device is operated, the press-fitting force of a product is within a controllable range and can be monitored in real time, the air permeability of the filter element is not damaged, the problem that the sealing surface of the product has defects after the filter element is formed and sintered can be effectively solved, the passing capacity of the filter element is ensured, the function of the filter product is ensured, and the one-time installation percent of pass of the product can be effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of filter element installation jigs, and in particular relates to a high-filtration-precision filter element matching installation jig. Background Art

[0002] Filters are often needed in ultrapure media systems, petroleum, chemical, power stations, semiconductors, food hygiene, laboratories and other industries. During use, the filter removes impurities from the media passing through the filter, effectively increasing the particle size of the media entering the final use end, and greatly improving the controllability of the media in use.

[0003] Among them, the powder metallurgy filter element has sharp burrs and some pits after molding. After being assembled on the filter element valve body, there is a gap, resulting in poor sealing. Because the valve body size and space are limited, it is not possible to install an oversized spring to meet the sealing requirements and achieve the appropriate specific pressure, resulting in the loss of the sealing surface of the product after assembly and failure to fit. At the same time, the roundness of the filter element cannot be guaranteed after sintering, and it is impossible to achieve absolute roundness through post-processing, so it is necessary to design a tooling for matching on the assembly line to solve the problem of poor product sealing. Utility Model Content

[0004] The utility model aims to provide a high-filtration-precision filter element and a matching installation fixture to solve the above-mentioned problems existing in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A high filtration accuracy filter element matching installation jig is used to press the filter element into the filter element installation groove of a valve body, comprising a cylinder, a pressure head with a pressure sensor installed at the lower end, and a workbench provided with a valve body installation table surface, the valve body is installed on the valve body installation table surface of the workbench, the cylinder is installed on the workbench above the valve body, the pressure head is located above the valve body corresponding to the filter element installation groove, and the upper end of the pressure head is connected to the piston rod of the cylinder, so that the pressure head is controlled by the cylinder to press down the filter element, so that the filter element installation groove and the filter element form a matching sealing surface.

[0007] As a preferred technical solution in the utility model, a guide sleeve is installed on the upper end of the valve body corresponding to the filter element installation groove, and a guide hole is opened in the middle of the guide sleeve for guiding the pressure head to the filter element when the pressure head moves downward.

[0008] As a preferred technical solution in the utility model, the lower part of the guide sleeve is sleeved in the valve body filter element installation groove.

[0009] As a preferred technical solution in the utility model, a connecting piece is installed at the lower end of the piston rod of the cylinder, and the connecting piece is threadedly connected to the upper end of the pressure head.

[0010] As a preferred technical solution in the utility model, the workbench includes a base plate with an upper end serving as a valve body mounting surface, and also includes a vertical plate, an upper mounting plate and a support. The upper mounting plate is located above the base plate and one side of the upper mounting plate is connected to the base plate through the vertical plate, and the other side of the upper mounting plate is connected to the base plate through the support. The cylinder is installed in the middle of the upper mounting plate.

[0011] As a preferred technical solution in the utility model, two pillars are provided, and the two pillars are respectively located on both sides of the cylinder.

[0012] As a preferred technical solution in the utility model, the vertical plate is connected to the bottom plate and the upper mounting plate through threads.

[0013] As a preferred technical solution in the utility model, the support is threadedly connected to the base plate and the upper mounting plate or connected via threads.

[0014] As a preferred technical solution in the utility model, the bottom of the filter element installation groove is a tapered hole whose inner diameter gradually decreases from top to bottom, and the inclination of the inner wall of the tapered hole is 60 degrees.

[0015] Beneficial effect: Before the utility model works, the filter element is first set in the filter element installation groove of the valve body, and then the valve body is installed on the valve body installation table of the workbench, and then the cylinder is started. The cylinder controls the pressure head to move downward and press down the filter element, so that the filter element installation groove and the filter element form a matching sealing surface. The utility model is simple to operate, and a pressure sensor is installed at the lower end of the pressure head. The pressure of the pressure sensor can be used to feedback to the controller, and then the cylinder is controlled to stop by the controller, so that the product pressing force is within a controllable range and can be monitored in real time, so as not to damage the air permeability of the filter element. Through the precise control of the pressing force, the problem of defects in the sealing surface of the filter element after molding and sintering can be effectively solved. While ensuring the passing capacity of the filter element, the function of the filter product is guaranteed. For high-precision filtration accuracy products, the one-time installation qualification rate of the product can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the front view of the utility model;

[0017] Figure 2 It is a side view of the utility model.

[0018] In the figure: 1-base plate; 2-vertical plate; 3-upper mounting plate; 4-cylinder; 5-pillar; 6-pressure head; 7-guide sleeve; 8-filter element; 9-valve body. DETAILED DESCRIPTION

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the utility model will be briefly introduced below in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the utility model, but does not constitute a limitation of the utility model.

[0020] Example:

[0021] like Figure 1 and Figure 2 As shown, this embodiment provides a high-filtration precision filter element matching installation fixture, which is used to press-fit the filter element 8 into the filter element installation groove of the valve body 9, so that the filter element installation groove forms a matching sealing surface with the filter element 8. Specifically, the high-filtration precision filter element matching installation fixture mainly includes a cylinder 4, a pressure head 6 with a pressure sensor (such as a micro load sensor of model LMA-A-1KN) installed at the lower end, and a workbench provided with a valve body installation table. The valve body 9 is installed on the valve body installation table of the workbench. The valve body installation table is preferably provided with a valve body installation limiter to ensure the relative stability of the valve body 9. The cylinder 4 is installed on the workbench above the valve body 9 to ensure the stability of the cylinder 4. The pressure head 6 is located above the valve body 9 corresponding to the filter element installation groove, and the upper end of the pressure head 6 is connected to the piston rod of the cylinder 4, so as to control the pressure head 6 to press down the filter element 8 through the cylinder 4, so that the filter element installation groove and the filter element 8 form a matching sealing surface.

[0022] Before the utility model is put into operation, the filter element 8 is first set in the filter element installation groove of the valve body 9, and then the valve body 9 is installed on the valve body installation table of the workbench, and then the cylinder 4 is started, and the cylinder 4 controls the pressure head 6 to move downward and press the filter element 8 downward, so that the filter element installation groove and the filter element 8 form a matching sealing surface. The utility model is simple to operate, and a pressure sensor is installed at the lower end of the pressure head 6. The pressure feedback of the pressure sensor can be used to control the cylinder 4 to stop, so that the product pressing force is within a controllable range and can be monitored in real time, so as not to damage the air permeability of the filter element. Through the precise control of the pressing force, the problem of defects in the sealing surface of the filter element after molding and sintering can be effectively solved. While ensuring the passing capacity of the filter element, the function of the filter product is guaranteed, and for high-precision filtration accuracy products, the one-time installation qualification rate of the product can be effectively improved.

[0023] As a preferred implementation scheme in this embodiment, it needs to be further explained that a guide sleeve 7 is installed on the upper end of the valve body 9 corresponding to the filter element installation groove, and a guide hole is provided in the middle of the guide sleeve 7 for guiding the pressure head 6 to the filter element 8 when the pressure head 6 moves downward. The guide sleeve 7 cooperates with the valve body 9 and the pressure head 6 to form a sliding pair, which can make the pressure head 6 more accurate when press-fitting the filter element 8.

[0024] As a preferred implementation scheme in this embodiment, it needs to be further explained that the lower part of the guide sleeve 7 is sleeved in the filter element installation groove of the valve body 9, which is simple and convenient to install and also convenient to quickly replace different valve bodies 9. In practice, the guide sleeve 7 is installed first, and then the filter element 8 is introduced into the filter element installation groove of the valve body 9 along the guide hole of the guide sleeve 7 to ensure that the filter element 8 does not tilt, so that the filter element 8 can be pressed down more stably by the pressure head.

[0025] As a preferred implementation scheme in this embodiment, it needs to be further explained that a connecting piece is installed at the lower end of the piston rod of the cylinder 4, and the connecting piece is threadedly connected to the upper end of the pressure head 6, thereby realizing quick loading and unloading of the pressure head 6, and a suitable pressure head 6 can be selected according to actual conditions.

[0026] As a preferred implementation scheme in this embodiment, it needs to be further explained that the workbench includes a base plate 1 with an upper end serving as a valve body mounting surface, and also includes a vertical plate 2, an upper mounting plate 3 and a support 5. The upper mounting plate 3 is located above the base plate 1 and one side of the upper mounting plate 3 is connected to the base plate 1 through the vertical plate 2, and the other side of the upper mounting plate 3 is connected to the base plate 1 through the support 5 to ensure the stability of the upper mounting plate 3; the cylinder 4 is installed in the middle of the upper mounting plate 3 to ensure the stability of the cylinder 4.

[0027] As a preferred implementation scheme in this embodiment, it should be further explained that two pillars 5 are provided, and the two pillars 5 are respectively located on both sides of the cylinder 4, which does not affect the operation. It should be explained that if the vertical plate 2, the cylinder 4 and the pillar 5 are arranged in sequence along the X-axis direction, the two pillars 5 can be divided into a first pillar and a second pillar, and the first pillar, the cylinder 4 and the second pillar are arranged in sequence along the Y-axis direction.

[0028] As a preferred implementation scheme in this embodiment, it needs to be further explained that the vertical plate 2 is connected to the bottom plate 1 and the upper mounting plate 3 by threads, and the connection structure is stable.

[0029] As a preferred implementation scheme in this embodiment, it needs to be further explained that the pillar 5 is threadedly connected to the base plate 1 and the upper mounting plate 3 or is connected through threads, that is, the pillar 5 is threadedly connected to the base plate 1 and the upper mounting plate 3, or the pillar 5 is threadedly connected to the base plate 1 and the upper mounting plate 3, and the connection structure is stable.

[0030] As a preferred implementation scheme in this embodiment, it needs to be further explained that the bottom of the filter element mounting groove is a tapered hole whose inner diameter gradually decreases from top to bottom, and the inclination of the inner wall of the tapered hole is 60 degrees. Since the lower end of the filter element 8 does not have a conical structure, the guide sleeve 7 can be used to ensure the initial stability of the filter element 8 so that it does not tilt. After the filter element 8 is pressed down by the pressure head 6, the lower end of the filter element 8 can be better fitted with the tapered hole to ensure the fitting surface so as not to get stuck. The stability of the filter element 8 is not affected after the guide sleeve 7 is removed.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high filtration precision filter element and mounting fixture, used for press-fitting a filter element (8) into a filter element mounting groove of a valve body (9), characterized in that: The invention comprises a cylinder (4), a pressure head (6) with a pressure sensor installed at the lower end, and a workbench provided with a valve body mounting surface, wherein the valve body (9) is installed on the valve body mounting surface of the workbench, and the cylinder (4) is installed on the workbench above the valve body (9). The pressure head (6) is located above the valve body (9) corresponding to the filter element mounting groove, and the upper end of the pressure head (6) is connected to the piston rod of the cylinder (4) so ​​as to control the pressure head (6) to press down the filter element (8) through the cylinder (4), so that the filter element mounting groove and the filter element (8) form a matching sealing surface.

2. A high filtration precision filter element matching installation fixture according to claim 1, characterized in that: A guide sleeve (7) is installed on the upper end of the valve body (9) corresponding to the filter element installation groove, and a guide hole is provided in the middle of the guide sleeve (7) for guiding the pressure head (6) to the filter element (8) when the pressure head (6) moves downward.

3. A high filtration precision filter element matching installation fixture according to claim 2, characterized in that: The lower part of the guide sleeve (7) is sleeved in the filter element installation groove of the valve body (9).

4. The high filtration precision filter element matching installation fixture according to claim 1 is characterized in that: A connecting piece is installed at the lower end of the piston rod of the cylinder (4), and the connecting piece is threadedly connected to the upper end of the pressure head (6).

5. A high filtration precision filter element matching installation fixture according to any one of claims 1-4, characterized in that: The workbench comprises a base plate (1) whose upper end serves as a valve body mounting surface, and further comprises a vertical plate (2), an upper mounting plate (3) and a support (5); the upper mounting plate (3) is located above the base plate (1) and one side of the upper mounting plate (3) is connected to the base plate (1) via the vertical plate (2), and the other side of the upper mounting plate (3) is connected to the base plate (1) via the support (5); the cylinder (4) is mounted in the middle of the upper mounting plate (3).

6. A high filtration precision filter element matching installation fixture according to claim 5, characterized in that: Two pillars (5) are provided, and the two pillars (5) are respectively located on both sides of the cylinder (4).

7. The high filtration precision filter element matching installation fixture according to claim 5, characterized in that: The vertical plate (2) is connected to the bottom plate (1) and the upper mounting plate (3) via threads.

8. The high filtration precision filter element matching installation fixture according to claim 5, characterized in that: The support column (5) is connected to the base plate (1) and the upper mounting plate (3) by threads or through threads.

9. The high filtration precision filter element matching installation fixture according to claim 1, characterized in that: The bottom of the filter element installation groove is a tapered hole whose inner diameter gradually decreases from top to bottom, and the inclination of the inner wall of the tapered hole is 60 degrees.

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