Universal filter pressure leak test assembly

Abstract

The utility model discloses a general filter pressure air tight test subassembly relates to filter production related technical field, the utility model discloses a main part subassembly and connecting component, and the main part subassembly includes air tight test board, and the air tight test board top is provided with the cavity of placing, and the air tight test board top still is provided with digit control mesa, and is provided with the communicating pipeline on the digit control mesa, and the connecting component includes the central pipe fixed in the communicating pipeline outer end, the utility model discloses a connecting component of setting, when using, the rotation adjusting part, make the connecting port alignment filter's test interface, and then rotate the handle, through transmission member drive, finally make the threaded rod along the linear movement of the limit rod axis inwards, and the threaded rod is driven gradually close to filter interface by connecting piece and finally completes the fixed clamping of filter to the clamping piece, solved the filter model size in the prior art scheme variously, and the problem that the air tightness detection equipment connecting port can not adapt to different inner diameter filter.

Description

Technical Field

[0001] This utility model belongs to the technical field of filter manufacturing, and in particular relates to a universal filter pressure and airtightness test component. Background Technology

[0002] A filter pressure and airtightness test kit is a specialized integrated device used to test the pressure carrying capacity and airtightness of filters (such as air filters and liquid filters). It typically consists of a test bench, a pressure source (gas or liquid), precision pressure measuring and control instruments, connecting pipelines, sealing joints, and leak detection auxiliary components (such as soap solution, helium mass spectrometry interfaces, etc.). Its working principle is to fill the filter under test with a specified medium through the pressure source and pressurize it to the test pressure. After holding the pressure, the pressure decay is monitored by pressure instruments or leak points are found by leak detection methods. This verifies the structural strength and sealing reliability of the filter under rated operating conditions. It is widely used in filter factory inspection, post-repair verification, and periodic maintenance of industrial systems. It is a key testing device to ensure the leak-free and safe operation of fluid systems.

[0003] However, it still has the following drawbacks in actual use: the connection ports of the existing filter pressure and air tightness test components are not universal, and different connection ports need to be specially customized according to the filter size to test filters of different functional inner diameters, which is costly. Utility Model Content

[0004] The purpose of this utility model is to provide a universal filter pressure airtightness test assembly. By setting the connection component, it solves the problem that the existing solutions have a variety of filter models and sizes, and the connection port of the airtightness testing equipment cannot be adapted to filters with different inner diameters.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a general filter pressure airtightness test assembly, including a main assembly and a connecting assembly. The main assembly includes an airtightness test bench, with a placement cavity opened on the top of the airtightness test bench, and a CNC table also provided on the top of the airtightness test bench, with a connecting pipe provided on the CNC table. The connecting assembly includes a central pipe that passes through and is fixed to the outer end of the connecting pipe. A connecting port is fixed to the end of the central pipe away from the connecting pipe. A U-shaped frame is also movably connected to the outer side of the central pipe. A shell is fixed to the end of the U-shaped frame away from the central pipe. A threaded rod is provided in the inner cavity of the shell. A connector is rotatably connected to one end of the threaded rod. A clamping member is hinged to the side of the connector away from the threaded rod. A bevel gear and a bevel ring are rotatably connected to the inner wall of the outer casing. The bevel gear is also threaded to the outer circumference of the threaded rod, and the bevel gear meshes with the bevel ring.

[0006] Furthermore, the connection port is tapered, and the contact surface of the connection port is bonded with a rubber pad; the clamping member is V-shaped, and the clamping surface of the clamping member is bonded with a rubber pad.

[0007] Furthermore, a limiting component is fixed on the connection port, and an active groove adapted to the limiting component is provided on the U-shaped frame.

[0008] Furthermore, a threaded groove is provided on the outer circumference of the central tube, and an adjusting component is threadedly connected to the threaded groove. One end of the adjusting component is rotatably connected to the U-shaped frame.

[0009] Furthermore, a limiting rod is movably connected to the inner cavity of the threaded rod, and the limiting rod protrudes from one end of the threaded rod and is fixed to the inner wall of the outer casing.

[0010] Furthermore, the threaded rod, limit rod, bevel gear, connector, and clamping member located on the same side are grouped together, and two groups are mirror-image arranged.

[0011] Furthermore, a second bevel gear is rotatably connected to the inner wall of the outer casing, which meshes with a bevel gear ring. A handle is also rotatably connected to the surface of the outer casing, which extends into one end of the outer casing and is fixedly connected to the second bevel gear.

[0012] This utility model has the following beneficial effects: 1. This utility model, through its connecting components, allows for the rotation of the adjusting component during use. This causes the U-shaped frame to move axially along the central tube until the connecting port aligns with the filter's test interface. Rotating the handle then rotates the bevel gear two fixed to it, driving the meshing bevel gear ring to rotate. This further drives the bevel gear one meshing on both sides to rotate synchronously. Since bevel gear one is threadedly connected to the threaded rod, its rotation is converted into the threaded rod moving inward linearly along the axis of the limiting rod. The threaded rod, through the connecting component, causes the clamping component to gradually approach the filter interface, ultimately securing the filter. This solves the problem in existing solutions where filter models and sizes vary, and the airtightness testing equipment's connecting port cannot adapt to filters with different inner diameters.

[0013] 2. With the connection components set in this utility model, when adjusting and fixing it, only the handle needs to be turned to drive the two sets of adjustment components to be fixed synchronously. This not only improves the efficiency of fixing, but also ensures that the center of the filter is always the same as the center of the connection port, greatly improving its functionality and convenience. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of the overall appearance of this utility model; Figure 2 This is a schematic diagram of the structure of the connecting component of this utility model; Figure 3 This is a structural schematic diagram of the connecting component of this utility model from another perspective; Figure 4 This is a schematic diagram of the transmission component of this utility model; Figure 5 This is a structural schematic diagram of the cross-section of the outer shell and the threaded rod of this utility model.

[0015] Figure label: 1. Main components; 11. Airtightness test bench; 12. Placement cavity; 13. CNC table; 14. Connecting pipes; 2. Connecting assembly; 21. Central tube; 22. Connecting port; 221. Limiting component; 23. U-shaped frame; 231. Movable groove; 24. Threaded groove; 241. Adjusting component; 25. Housing; 26. Threaded rod; 261. Limiting rod; 27. Connecting component; 271. Clamping component; 28. Bevel gear one; 281. Bevel gear ring; 29. ​​Bevel gear two; 291. Handle. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0017] Please see Figure 1-5 As shown, this utility model is a universal filter pressure and airtightness test assembly, including a main assembly 1 and a connecting assembly 2. The main assembly 1 includes an airtightness test bench 11, with a placement cavity 12 on top of the airtightness test bench 11. A CNC table 13 is also provided on the airtightness test bench 11, and a connecting pipe 14 is provided on the CNC table 13. In the main assembly 1, the airtightness test bench 11 provides basic support for the entire test assembly. The placement cavity 12 above it is used to support the filter to be subjected to pressure and airtightness testing, providing a stable placement space for the filter. The CNC table 13 is the core of test control and monitoring, which can realize the setting and adjustment of parameters such as test pressure and pressure holding time, and can also provide real-time feedback of pressure change data during the test. The connecting pipe 14 undertakes the transmission function of pressure medium (such as gas or liquid) and is the medium channel connecting the test system and the filter.

[0018] The connecting assembly 2 includes a central pipe 21 that passes through and is fixed to the outer end of the connecting pipe 14. A connecting port 22 is fixed to the end of the central pipe 21 away from the connecting pipe 14. A U-shaped frame 23 is movably connected to the outer periphery of the central pipe 21. A housing 25 is fixed to the end of the U-shaped frame 23 away from the central pipe 21. A threaded rod 26 is provided in the inner cavity of the housing 25. A connector 27 is rotatably connected to one end of the threaded rod 26. A clamping member 271 is hinged to the side of the connector 27 away from the threaded rod 26. A bevel gear 28 and a bevel ring 281 are rotatably connected to the inner wall of the housing 25. The bevel gear 28 is also threaded to the outer periphery of the threaded rod 26 and meshes with the bevel ring 281.

[0019] In the connecting assembly 2, the central tube 21 serves as an intermediate carrier for media transmission. One end is fixedly connected to the connecting pipe 14, and the other end is connected to the connecting port 22 to realize the transition transmission of the media from the filter in the connecting pipe 14. The connecting port 22 adopts a tapered structure, which can be adapted to filter interfaces of different diameters. The rubber gasket bonded to its contact surface can enhance the sealing with the filter interface and prevent media leakage during the test.

[0020] The U-shaped frame 23 serves to connect the central tube 21 and the outer shell 25. It can move axially along the central tube 21, providing support for the position adjustment of the clamping structure. The outer shell 25 provides protection and a mounting carrier for the internal transmission parts, preventing external impurities from interfering with the transmission process. The threaded rod 26 is the actuator for the clamping action. One end of it is connected to the clamping member 271 through the connector 27. It can move the clamping member 271 closer to or further away from the filter interface through axial movement. The connector 27 is used to connect the threaded rod 26 and the clamping member 271 and adopts a hinged method, so that the angle of the clamping member 271 can be finely adjusted according to the shape of the filter interface, improving adaptability.

[0021] The transmission system consists of bevel gear 28, bevel ring 281, bevel gear 29, and handle 291. The handle 291 is manually driven by the operator. Rotating the handle 291 can drive bevel gear 29 to rotate. Bevel gear 29 meshes with bevel ring 281, thereby driving bevel ring 281 to rotate. Bevel ring 281 meshes with bevel gear 28 on both sides at the same time, realizing synchronous reverse rotation of the two bevel gears 28. Bevel gear 28 is threadedly connected to threaded rod 26, and its rotation can be converted into axial movement of threaded rod 26, providing power for clamping action.

[0022] Furthermore, the connection port 22 is tapered, and a rubber pad is bonded to the contact surface of the connection port 22. The clamping member 271 is V-shaped, and a rubber pad is bonded to the clamping surface of the clamping member 271. The tapered structure of the connection port 22 can be adapted to filter interfaces of different diameters. The rubber pad bonded to its contact surface can enhance the sealing performance with the filter interface and prevent media leakage during the test. The V-shaped clamping member 271 can be adapted to filter interfaces with different cross-sectional shapes. The rubber pad on its clamping surface can increase the friction with the interface, prevent clamping slippage, and at the same time help enhance the sealing effect.

[0023] Furthermore, a limiting component 221 is fixed on the connection port 22, and an active groove 231 adapted to the limiting component 221 is provided on the U-shaped frame 23. The limiting component 221 is fixed on the connection port 22 and cooperates with the active groove 231 of the U-shaped frame 23 to limit the movement trajectory of the U-shaped frame 23 and ensure that its adjustment process is stable and controllable.

[0024] Furthermore, a threaded groove 24 is provided on the outer periphery of the central tube 21, and an adjusting member 241 is threadedly connected to the threaded groove 24. One end of the adjusting member 241 is rotatably connected to the U-shaped frame 23. The adjusting member 241 is threadedly connected to the threaded groove 24 on the outer periphery of the central tube 21, and the other end is rotatably connected to the U-shaped frame 23. By rotating the adjusting member 241, the U-shaped frame 23 can be driven to move along the central tube 21, thereby adjusting the position of the outer shell 25 and the clamping member 271 to accommodate filter interfaces of different lengths.

[0025] Furthermore, a limiting rod 261 is movably connected to the inner cavity of the threaded rod 26. The limiting rod 261 protrudes from one end of the threaded rod 26 and is fixed to the inner wall of the outer shell 25. The limiting rod 261 is movably inserted through the inner cavity of the threaded rod 26 and one end is fixed to the inner wall of the outer shell 25, which can restrict the rotational freedom of the threaded rod 26 and ensure that the threaded rod 26 only moves linearly along the axial direction.

[0026] Furthermore, the threaded rod 26, the limiting rod 261, the bevel gear 28, the connector 27 and the clamping member 271 located on the same side are arranged as a group, and two groups are mirror-arranged. The two sets of mirror-arranged clamping and fixing components can synchronously drive the two clamping members 271 to approach or move away, making the fixing of the filter more stable and efficient.

[0027] Furthermore, a second bevel gear 29 is rotatably connected to the inner wall of the outer casing 25. The second bevel gear 29 meshes with the bevel gear ring 281. A handle 291 is rotatably connected to the surface of the outer casing 25. One end of the handle 291 extends into the outer casing 25 and is fixedly connected to the second bevel gear 29. The handle 291 facilitates manual operation by the operator. Rotating the handle 291 can drive the second bevel gear 29 to rotate. The second bevel gear 29 meshes with the bevel gear ring 281, thereby driving the bevel gear ring 281 to rotate. The bevel gear ring 281 simultaneously meshes with the first bevel gears 28 on both sides, realizing the synchronous reverse rotation of the two bevel gears 28. The first bevel gear 28 is threadedly connected to the threaded rod 26. Its rotation can be converted into the axial movement of the threaded rod 26, providing power for the clamping action.

[0028] The specific working principle of this utility model is as follows: When using this device, first place the filter to be tested in the placement cavity 12 of the airtightness test bench 11, then rotate the adjusting component 241. Because the adjusting component 241 is engaged with the threaded groove 24 of the central tube 21 and is rotatably connected to the U-shaped frame 23, the rotation will drive the U-shaped frame 23 to move axially along the central tube 21 until the connection port 22 is aligned with the test interface of the filter. At this time, the limiting component 221 slides synchronously in the movable groove 231 of the U-shaped frame 23 to ensure accurate adjustment direction. Finally, rotate the handle... Handle 291 drives the fixed bevel gear 29 to rotate. The bevel gear 29 drives the meshing bevel ring 281 to rotate. The bevel ring 281 further drives the meshing bevel gear 28 on both sides to rotate synchronously. Since the bevel gear 28 is threadedly connected to the threaded rod 26 and the threaded rod 26 is restricted from rotating by the limiting rod 261, the rotation of the bevel gear 28 will be converted into the inward linear movement of the threaded rod 26 along the axis of the limiting rod 261. The threaded rod 26 drives the clamping member 271 to gradually approach the filter interface through the connecting member 27.

[0029] During the approach process, the V-shaped clamp 271 can adaptively adjust its angle according to the shape of the interface. After the rubber pad on its clamping surface is in contact with the interface, it can prevent the interface from slipping through friction and also assist in sealing. The clamps 271 on both sides exert force at the same time to tightly press the filter interface and the connection port 22. The rubber pad on the connection port 22 is in full contact with the interface to form a double seal and avoid leakage of the test medium.

[0030] After the interface is fixed, rotate the adjusting component 241 again to make the connecting port 22 tightly connected to the filter port until it can no longer be rotated. At this time, the filter port is fixed and connected. Then, set the required pressure value, holding time and other parameters for the test through the CNC table 13, start the test program, and the pressure medium enters the central pipe 21 through the connecting pipe 14 and is then injected into the filter through the connecting port 22. The CNC table 13 monitors the pressure change in the system in real time. If the pressure remains stable during the holding process, it indicates that the pressure and airtightness performance of the filter is qualified. If the pressure drops, it indicates that there is a leakage problem in the filter.

[0031] After the test, rotate the handle 291 in the opposite direction to drive the threaded rod 26 to move outward through gear transmission. The clamp 271 then loosens the filter interface. Then rotate the adjusting piece 241 to reset the U-shaped frame 23. The filter can then be removed from the placement cavity 12, completing one pressure airtightness test.

[0032] The above are merely preferred embodiments of the present utility model and do not limit the present utility model. Any modifications, equivalent substitutions, or improvements made to the technical solutions described in the foregoing embodiments, or to some of the technical features, shall be protected by the present utility model.

Claims

1. A universal filter pressure gas tight test assembly comprising a main assembly (1) and a connection assembly (2), characterized in that: The main component (1) includes an airtight test bench (11), a placement cavity (12) is provided above the airtight test bench (11), a CNC table (13) is also provided above the airtight test bench (11), and a connecting pipe (14) is provided on the CNC table (13). The connecting assembly (2) includes a central tube (21) that passes through and is fixed to the outer end of the connecting pipe (14). A connecting port (22) is fixed to the end of the central tube (21) away from the connecting pipe (14). A U-shaped frame (23) is movably connected to the outer periphery of the central tube (21). A shell (25) is fixed to the end of the U-shaped frame (23) away from the central tube (21). A threaded rod (26) is provided in the inner cavity of the shell (25). A connector (27) is rotatably connected to one end of the threaded rod (26). A clamping member (271) is hinged to the side of the connector (27) away from the threaded rod (26). The inner wall of the outer shell (25) is also rotatably connected to a bevel gear (28) and a bevel ring (281). The bevel gear (28) is also threadedly connected to the outer periphery of the threaded rod (26), and the bevel gear (28) meshes with the bevel ring (281).

2. A universal filter pressure gas tight test assembly as defined in claim 1, wherein: The connection port (22) is tapered, and the contact surface of the connection port (22) is bonded with a rubber pad. The clamping member (271) is V-shaped, and the clamping surface of the clamping member (271) is bonded with a rubber pad.

3. A universal filter pressure gas tight test assembly as defined in claim 2, wherein: The connection port (22) is also fixed with a limiting member (221), and the U-shaped frame (23) is also provided with an active groove (231) that is compatible with the limiting member (221).

4. A universal filter pressure gas tight test assembly as defined in claim 3 wherein: The outer circumferential side of the central tube (21) is provided with a threaded groove (24), and an adjusting component (241) is threadedly connected to the threaded groove (24). One end of the adjusting component (241) is rotatably connected to the U-shaped frame (23).

5. A universal filter pressure and airtightness test assembly according to claim 4, characterized in that: The threaded rod (26) is movably connected to a limiting rod (261) in its inner cavity. The limiting rod (261) protrudes from one end of the threaded rod (26) and is fixed to the inner wall of the outer shell (25).

6. A universal filter pressure gas tight test assembly as defined in claim 5 wherein: The threaded rod (26), the limiting rod (261), the bevel gear (28), the connector (27) and the clamping member (271) located on the same side are a group, and two groups are mirror images of each other.

7. A universal filter pressure gas tight test assembly as defined in claim 6 wherein: The inner wall of the outer shell (25) is also rotatably connected to a second bevel gear (29), which meshes with the bevel gear ring (281). The surface of the outer shell (25) is also rotatably connected to a handle (291), which extends into one end of the outer shell (25) and is fixedly connected to the second bevel gear (29).

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