Sealing cycle test equipment for purifier filter element

Abstract

The utility model relates to the technical field of filter element detection, in particular to a seal cycle test device for a purifier filter element, which comprises a base, a support plate is connected to the back of the top of the base, a placement groove is connected to the top of the base, and a test mechanism is arranged at the top of the support plate; by arranging the testing mechanism, when a cylindrical filter element is tested, the filter element is placed in a placement groove, a first pressing rod is driven by a hydraulic cylinder to press downwards, so that air in a first piston barrel is conveniently extruded out and injected into the filter element, gas with certain pressure is filled into the filter element, and then the pressure change condition of the gas within a certain time is detected; and if the sealing performance of the filter element is good, the pressure change is within an allowable range, and if leakage exists, the pressure drops quickly, so that the internal pressure environment of the filter element in actual use can be conveniently simulated, and the sealing performance of the filter element can be effectively detected.

Description

Technical Field

[0001] The utility model relates to the technical field of filter element detection, in particular to a sealing cycle testing device for a purifier filter element. Background Art

[0002] Air purifiers rely on the filtering function of their filters to remove air pollutants. If the filter is not properly sealed, unpurified air may bypass the filter and enter the purified air path, significantly reducing purification effectiveness. For example, when filtering tiny particles like PM2.5, a poorly sealed filter can allow some air containing PM2.5 to leak, failing to achieve the desired purification goal and affecting people's respiratory health. Therefore, filter seal testing is necessary.

[0003] Existing technology such as Publication No.

[0004] CN206862582U provides an automatic filter element testing device. It is used to test the sealing performance of the filter element to be tested. The filter element to be tested includes a core body and a core cover. The core cover has an inlet and a sealing ring on the outer wall. The automatic filter element testing device includes a workbench, a supporting element, a cylinder, a positioning element, a filter assembly for filtering compressed air, a accommodating cylinder, at least one pair of guide elements and a base arranged on the workbench. The supporting element is arranged at the head end of the guide element; the cylinder is fixed to the supporting element; the positioning element is sleeved on the guide element; the top of the positioning element is connected to the cylinder; the accommodating cylinder body has an open end and an accommodating cavity for accommodating the filter element to be tested, and the top of the accommodating cylinder body is connected to the bottom of the positioning element; and a test port and an air inlet are provided on the base. The test port is connected to the test sealing cavity, and the air inlet is connected to the inlet of the core cover; and the interior of the filter assembly is connected to the air inlet. The automatic filter element testing device is not easy to contaminate the filter element to be tested, and the testing efficiency is high.

[0005] This solution uses compressed air to test the sealability of the filter element based on pressure changes. However, the amount of air injected during the actual pressurization process is constant, making it impossible to adjust the sealability of the filter element under different pressure conditions by adjusting the injected air volume. Therefore, we propose a seal cycle test device for purifier filter elements. Utility Model Content

[0006] The purpose of the utility model is to provide a sealing cycle testing device for a purifier filter element, which solves the problem that the sealing performance of the filter element cannot be detected under different pressure states.

[0007] To achieve the above purpose, the present invention provides the following technical solutions:

[0008] A seal cycle test device for a purifier filter element includes a base, a support plate connected to the top and back of the base, a placement slot connected to the top of the base, positioning mechanisms provided at positions on both sides of the placement slot on the top of the base, and a testing mechanism provided on the top of the support plate;

[0009] The testing mechanism includes a first piston cylinder, which is connected to a support plate at a position above the placement groove, a gas injection port connected to the bottom of the first piston cylinder, and a solenoid valve is provided at the gas injection port, the top of the support plate at a position on the back of the first piston cylinder is connected to a hydraulic cylinder, the top of the hydraulic cylinder is connected to a first pressure rod, one end of the top of the first pressure rod is connected to a threaded block, the top of the first piston cylinder is rotatably connected to a threaded rod, and the outer wall of the threaded rod is threadedly connected to the threaded block.

[0010] Preferably, a pressure measuring tube is connected to one side of the bottom of the first piston cylinder, and a thimble is slidably connected to the inner wall of the pressure measuring tube.

[0011] Preferably, a second spring is connected to the top of the ejector pin, and a scale is connected to one side of the pressure measuring tube.

[0012] Preferably, a connecting ring is connected to the outer wall of the first piston cylinder above the support plate, and a first spring is connected to the position between the connecting ring and the top of the support plate.

[0013] Preferably, the positions on both sides below the connecting ring are respectively connected to limiting rods, and the limiting rods are connected to the top of the supporting plate.

[0014] Preferably, the positioning mechanism includes a third piston cylinder, and two groups of the third piston cylinders are respectively connected to the top of the base at both sides of the placement groove, and the corresponding sides of the two groups of third piston cylinders are respectively connected with V-shaped clamping blocks.

[0015] Preferably, the positioning mechanism also includes a second pressure rod, and the two second pressure rods are respectively connected to both sides of the top of the hydraulic cylinder. The top of the base is below the two second pressure rods and is respectively connected to a second piston cylinder, and the second piston cylinder is connected to the third piston cylinder at the corresponding position through an air pipe.

[0016] By means of the above technical solution, the present invention provides a sealing cycle test device for a purifier filter element. It has at least the following beneficial effects:

[0017] 1. The utility model sets a testing mechanism. When testing a cylindrical filter element, the filter element is placed in a placement slot, and the first pressure rod is driven downward by the hydraulic cylinder to squeeze out the air in the first piston cylinder and inject it into the filter element. By filling the filter element with gas at a certain pressure, and then detecting the pressure change of the gas within a certain period of time, if the sealing performance of the filter element is good, the pressure change will be within the allowable range. If there is a leak, the pressure will drop faster, so as to simulate the internal pressure environment to which the filter element is subjected in actual use, and effectively detect the sealing performance of the filter element. Moreover, through the provided threaded block limiter, the amount of the first piston cylinder squeezed out by the first pressure rod can be adjusted by rotating the threaded rod, so as to simulate the sealing performance of the filter element in different environments.

[0018] 2. The utility model is provided with a positioning mechanism. When the hydraulic cylinder drives the first pressure rod to press down, it will also drive the second pressure rod to press down together, so as to facilitate the air inside the second piston cylinder to be squeezed into the interior of the third piston cylinder through the air pipe, so that the third piston cylinder extends and drives the V-shaped clamping block to facilitate clamping the cylindrical filter element, so as to ensure the stability of the connection between the air vent and the air injection port of the filter element during air injection, and the V-shaped clamping block has the function of automatic centering when clamping the cylindrical workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:

[0020] Figure 1 This is a diagram showing the overall structure of the utility model;

[0021] Figure 2 For this utility model Figure 1 The first piston cylinder is shown in FIG;

[0022] Figure 3 This is a structural diagram showing the pressure measuring tube in the present invention;

[0023] Figure 4 For this utility model Figure 1 The second piston cylinder is shown in FIG.

[0024] In the figure: 1. base; 11. placement groove; 12. support plate; 2. testing mechanism; 21. first piston cylinder; 22. pressure measuring tube; 221. ejector pin; 222. second spring; 223. scale; 23. hydraulic cylinder; 24. first pressure rod; 25. threaded rod; 26. threaded block; 27. connecting ring; 28. first spring; 29. limit rod; 3. positioning mechanism; 31. second pressure rod; 32. second piston cylinder; 33. third piston cylinder; 34. air pipe; 35. V-shaped clamp. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0026] A seal cycle test device for a purifier filter element, such as Figure 1 、 Figure 2 As shown, it includes a base 1, the top and back of the base 1 are connected to a support plate 12, the top of the base 1 is connected to a placement groove 11, and a positioning mechanism 3 is provided at the top of the base 1 on both sides of the placement groove 11. A testing mechanism 2 is provided on the top of the support plate 12, and the testing mechanism 2 includes a first piston cylinder 21. The first piston cylinder 21 is connected to the support plate 12 at a position above the placement groove 11, the bottom of the first piston cylinder 21 is connected to an injection port, and an electromagnetic valve is provided at the injection port, the top of the support plate 12 is connected to a hydraulic cylinder 23 at the back of the first piston cylinder 21, the top of the hydraulic cylinder 23 is connected to a first pressure rod 24, one end of the top of the first pressure rod 24 is connected to a threaded block 26, the top of the first piston cylinder 21 is rotatably connected to a threaded rod 25, and the outer wall of the threaded rod 25 is threadedly connected to the threaded block 26.

[0027] It is worth noting that the first piston cylinder 21 , the second piston cylinder 32 and the third piston cylinder 33 are all connected with support springs for resetting.

[0028] In this embodiment, by setting up a testing mechanism 2, when testing the cylindrical filter element, the filter element is placed in the placement groove 11, and the first pressure rod 24 is pressed down by the hydraulic cylinder 23 to open the solenoid valve at the gas injection port to facilitate the extrusion of the air in the first piston cylinder 21 and inject it into the filter element. By filling the interior of the filter element with gas of a certain pressure, and then detecting the pressure change of the gas within a certain period of time, if the sealing of the filter element is good, the pressure change will be within the allowable range. If there is a leakage, the pressure will drop faster, so as to facilitate the simulation of the internal pressure environment to which the filter element is subjected in actual use, and effectively detect the sealing performance of the filter element. The threaded block 26 is limited by the provided position, and the amount of the first piston cylinder 21 squeezed out by the first pressure rod 24 can be adjusted by rotating the threaded rod 25, so as to facilitate the simulation of the sealing performance of the filter element in different environments. Example 2

[0029] like Figure 2 、 Figure 3As shown, a pressure measuring tube 22 is connected to one side of the bottom of the first piston cylinder 21, a thimble 221 is slidably connected to the inner wall of the pressure measuring tube 22, a second spring 222 is connected to the top of the thimble 221, and a scale 223 is connected to one side of the pressure measuring tube 22.

[0030] In this embodiment, after the air in the first piston cylinder 21 is squeezed into the interior of the filter element, since the first piston cylinder 21 and the filter element are in a connected state, the pressure inside the filter element will be directly fed back to the pressure measuring tube 22, pushing out the ejector pin 221 and compressing the second spring 222. At this time, the ejector pin 221 is at the position of the scale 223, which is the pressure inside the filter element, to facilitate observation by the tester. Example 3

[0031] like Figure 2 As shown, the outer wall of the first piston cylinder 21 is connected to a connecting ring 27 at a position above the support plate 12, and a first spring 28 is connected to a position between the connecting ring 27 and the top of the support plate 12. The positions on both sides below the connecting ring 27 are respectively connected to limiting rods 29, and the limiting rods 29 are connected to the top of the support plate 12.

[0032] In this embodiment, when the hydraulic cylinder 23 drives the first pressure rod 24 to press down, since the solenoid valve at the air injection port is in a closed state, the interior of the first piston cylinder 21 is in a sealed state, so that the first piston cylinder 21 will sink as a whole, connecting the air vent of the filter element with the air injection port. Example 4

[0033] like Figure 1 、 Figure 4 As shown, the positioning mechanism 3 includes a third piston cylinder 33, and two groups of third piston cylinders 33 are respectively connected to the top of the base 1 at the positions on both sides of the placement groove 11, and the corresponding sides of the two groups of third piston cylinders 33 are respectively connected with V-shaped clamping blocks 35. The positioning mechanism 3 also includes a second pressure rod 31, and the two second pressure rods 31 are respectively connected to the two sides of the top of the hydraulic cylinder 23, and the top of the base 1 is below the two second pressure rods 31. The second piston cylinder 32 is respectively connected, and the second piston cylinder 32 is connected to the corresponding position of the third piston cylinder 33 through the air pipe 34.

[0034] In this embodiment, by setting a positioning mechanism 3, when the hydraulic cylinder 23 drives the first pressure rod 24 to press down, it will also drive the second pressure rod 31 to press down together, so as to facilitate the air inside the second piston cylinder 32 to be squeezed into the interior of the third piston cylinder 33 through the air pipe 34, so that the third piston cylinder 33 extends to drive the V-shaped clamping block 35 to facilitate clamping the cylindrical filter element, so as to ensure the stability of the connection between the air vent and the air injection port of the filter element during air injection, and the V-shaped clamping block 35 has the function of automatic centering when clamping the cylindrical workpiece.

[0035] When the sealing cycle test device of a purifier filter element of the present invention is used, when testing the cylindrical filter element, the filter element is placed in the placement groove 11, and the first pressure rod 24 is pressed down by the hydraulic cylinder 23. When the hydraulic cylinder 23 drives the first pressure rod 24 to press down, since the electromagnetic valve at the air injection port is in a closed state, the interior of the first piston cylinder 21 is in a sealed state, so that the first piston cylinder 21 will sink as a whole, so that the air vent of the filter element is connected to the air injection port. After complete connection, the electromagnetic valve at the air injection port is opened to facilitate the continued downward pressure of the first pressure rod 24 to squeeze out the air in the first piston cylinder 21 and inject it into the filter element. After the air in the first piston cylinder 21 is squeezed into the interior of the filter element, since the first piston cylinder 21 and the filter element are in a connected state, the pressure inside the filter element will be directly fed back to the pressure measuring tube 22, pushing out the ejector pin 221 and compressing the second spring 222. At this time, the ejector pin 221 is at the position of the scale 223, that is, the pressure inside the filter element, so that the tester can observe it by injecting it into the filter element. The filter element is filled with gas of a certain pressure, and then the pressure change of the gas within a certain period of time is detected. If the sealing of the filter element is good, the pressure change will be within the allowable range. If there is a leak, the pressure will drop faster, so as to simulate the internal pressure environment to which the filter element is subjected in actual use, and effectively detect the sealing performance of the filter element. The threaded block 26 is limited by the provided threaded block 26, and the amount of the first pressure rod 24 pressing down and squeezing out the first piston cylinder 21 can be adjusted by rotating the threaded rod 25, so as to simulate the sealing performance of the filter element in different environments. When the hydraulic cylinder 23 drives the first pressure rod 24 to press down, it will also drive the second pressure rod 31 to press down together, so as to facilitate the air inside the second piston cylinder 32 to be squeezed into the interior of the third piston cylinder 33 through the air pipe 34, so that the third piston cylinder 33 extends to drive the V-shaped clamping block 35 to facilitate the clamping of the cylindrical filter element, so as to ensure the stability of the connection between the air vent and the air injection port of the filter element during air injection, and the V-shaped clamping block 35 has the function of automatic centering when clamping the cylindrical workpiece.

[0036] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sealing cycle test device for a purifier filter element, comprising a base (1), characterized in that: The back of the top of the base (1) is connected to a support plate (12), the top of the base (1) is connected to a placement groove (11), a positioning mechanism (3) is provided at the top of the base (1) on both sides of the placement groove (11), and a testing mechanism (2) is provided on the top of the support plate (12); The testing mechanism (2) includes a first piston cylinder (21), the first piston cylinder (21) is connected to the support plate (12) at a position above the placement groove (11), the bottom of the first piston cylinder (21) is connected to an air injection port, and an electromagnetic valve is provided at the air injection port, the top of the support plate (12) is connected to a hydraulic cylinder (23) at a position on the back of the first piston cylinder (21), the top of the hydraulic cylinder (23) is connected to a first pressure rod (24), one end of the top of the first pressure rod (24) is connected to a threaded block (26), the top of the first piston cylinder (21) is rotatably connected to a threaded rod (25), and the outer wall of the threaded rod (25) is threadedly connected to the threaded block (26).

2. The seal cycle test device for a purifier filter element according to claim 1, characterized in that: A pressure measuring tube (22) is connected to one side of the bottom of the first piston cylinder (21), and a thimble (221) is slidably connected to the inner wall of the pressure measuring tube (22).

3. The seal cycle test device for a purifier filter element according to claim 2, characterized in that: The top of the ejector pin (221) is connected to a second spring (222), and one side of the pressure measuring tube (22) is connected to a scale (223).

4. The seal cycle test device for a purifier filter element according to claim 1, characterized in that: A connecting ring (27) is connected to the outer wall of the first piston cylinder (21) above the support plate (12), and a first spring (28) is connected to the position between the connecting ring (27) and the top of the support plate (12).

5. The seal cycle test device for a purifier filter element according to claim 4, characterized in that: Positions on both sides below the connecting ring (27) are respectively connected to limiting rods (29), and the limiting rods (29) are connected to the top of the support plate (12).

6. The seal cycle test device for a purifier filter element according to claim 1, characterized in that: The positioning mechanism (3) includes a third piston cylinder (33), two groups of the third piston cylinder (33) are respectively connected to the top of the base (1) at positions on both sides of the placement groove (11), and the corresponding sides of the two groups of third piston cylinders (33) are respectively connected to V-shaped clamping blocks (35).

7. The seal cycle test device for a purifier filter element according to claim 6, characterized in that: The positioning mechanism (3) further includes a second pressure rod (31), wherein two second pressure rods (31) are respectively connected to both sides of the top of the hydraulic cylinder (23), and a second piston cylinder (32) is respectively connected to the top of the base (1) below the two second pressure rods (31), and the second piston cylinder (32) is communicated with a third piston cylinder (33) at a corresponding position through an air pipe (34).

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