Filter element pressure testing equipment

Abstract

Filter element pressure testing equipment comprises a rack, a fixing device and a pressure testing device, and is characterized in that the fixing device comprises a positioning seat, a positioning sleeve and a positioning clamping ring, a positioning cavity is formed in the positioning seat, the bottom of the positioning seat is connected with an air inlet connector and an air outlet connector, and a supporting flange is formed on the outer ring of the upper end of the positioning seat; a containing cavity is formed in the positioning sleeve, a pressing flange is formed on the outer ring of the lower end of the positioning sleeve, and the positioning sleeve is arranged above the positioning base and connected with a first driving assembly. The positioning clamping ring comprises two symmetrically-arranged semi-rings, V-shaped clamping grooves are formed in the semi-rings, and the semi-rings are connected with a second driving assembly. The positioning sleeve is provided with a clamping position where the pressing flange and the supporting flange jointly clamp the filter element, and the semi-ring is provided with a locking position where the supporting flange and the pressing flange are mutually locked through the V-shaped clamping groove. The fixing device has the advantages that automatic work is achieved, manual labor is reduced, operation is convenient, working efficiency is improved, and safety is better.

Description

Technical Field

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

[0002] A large-flow filter element disclosed in a Chinese utility model patent (CN220257313U) includes a base, a housing, and a plurality of inner filter elements. The base is provided with a liquid inlet and a liquid outlet. The base is separated by a partition into an inner channel and an outer channel. The liquid inlet is connected to the outer channel, the liquid outlet is connected to the inner channel. A connecting flower plate is installed at the upper end of the partition. The connecting flower plate covers the inner channel. The inner filter elements are installed on the connecting flower plate. Plugs are respectively installed at the liquid inlet and the liquid outlet. A spring is installed between the plug and the connecting flower plate. The housing is installed on the base and encloses the inner filter elements.

[0003] The above-mentioned large-flow filter element is usually used for filtering fluids in the lithium battery coating field. During the use of the filter, as the number of times the filter element is used increases, the filtered impurities will deposit at the filter element. With the deposition of the filtered impurities, when the liquid flow rate remains unchanged, the pressure of the fluid flowing into the filter element will increase. When the pressure inside the filter element increases, there is a risk of the filter element bursting or leaking, resulting in the stoppage of coating, waste of raw materials, and production stoppage. Therefore, it is necessary to perform pressure performance detection on the filter element.

[0004] When performing pressure testing on the above-mentioned large-flow filter element, the filter element is usually fixed and locked on the test fixture by a clamp, then gas pressure is injected into the filter element, and this pressure is maintained for a certain period of time. Whether the filter element performance is qualified is judged by detecting whether the pressure changes.

[0005] However, the conventional filter element pressure detection fixture has the following deficiencies:

[0006] 1. When fixing the filter element, it is necessary to manually operate the clamp to lock the filter element. The operation of loading and unloading the filter element is relatively troublesome, not only with a large manual labor intensity, but also with low work efficiency;

[0007] 2. For products with unqualified pressure performance, there is a risk of the filter element bursting during testing. Therefore, there are certain safety hazards during pressure testing. Summary of the Utility Model

[0008] In order to overcome the deficiencies of the background art, the utility model provides a filter element pressure testing device.

[0009] The technical solution adopted by the utility model: A filter element pressure testing device includes:

[0010] A frame;

[0011] A fixing device, which is arranged on the frame and is used for fixing the filter element;

[0012] A pressure testing device is provided on a frame, for connecting with a filter element and conducting a pressure test.

[0013] An intake main pipe is connected with the pressure testing device, for intake air boosting.

[0014] An exhaust main pipe is connected with the pressure testing device, for exhaust pressure relief.

[0015] A control system is electrically connected with the fixing device and the pressure testing device, for receiving signal information and outputting action instructions.

[0016] The fixing device includes:

[0017] A positioning seat is fixedly installed on the frame. The positioning seat forms a positioning cavity with an upper end opening and adapted to the filter element base. An intake joint and an exhaust joint are connected to the bottom of the positioning seat. A support flange is formed on the outer circle at the upper end of the positioning seat.

[0018] A positioning sleeve forms a receiving cavity with a lower end opening and adapted to the filter element housing. A pressing flange is formed on the outer circle at the lower end of the positioning sleeve. The positioning sleeve is correspondingly arranged above the positioning seat and is connected with a first driving component capable of driving it to move up and down.

[0019] A positioning snap ring includes two half rings symmetrically arranged on both sides of the positioning seat. A V-shaped card slot is formed on the side of the half ring corresponding to the positioning seat, and the half ring is connected with a second driving component capable of driving it to move horizontally.

[0020] The positioning sleeve has a clamping position where the pressing flange and the support flange jointly clamp the filter element. The half ring has a locking position where the support flange and the pressing flange are locked with each other through the V-shaped card slot.

[0021] Among them, the first driving component includes:

[0022] At least two guide posts are fixedly arranged side by side on the frame.

[0023] A slider is slidably arranged on the guide posts and is fixedly connected with the side wall of the positioning sleeve.

[0024] A screw linear module is installed on the frame and is drivingly connected with the slider.

[0025] The second driving component directly adopts a cylinder.

[0026] The pressure testing device includes:

[0027] A gas pipeline is communicated with the intake joint.

[0028] An intake branch pipe is communicated with the gas pipeline and the intake main pipe at both ends, and an intake valve is arranged on the intake branch pipe.

[0029] An exhaust manifold, the two ends of which are respectively connected to a gas pipeline and an exhaust main pipe, and an exhaust valve is provided on the exhaust manifold;

[0030] A pressure detection unit, which is connected to the gas pipeline and is used to detect the magnitude of the gas pressure in the gas pipeline in real time.

[0031] The frame includes a surrounding plate and at least one openable safety door. The surrounding plate and the safety door together play a role in safety protection. An inductor corresponding to the safety door is also provided on the frame. The inductor is used to sense the opening and closing state of the safety door. The inductor is connected to the control system and can send the opening and closing state information of the safety door to the control system. It can be set that only when the safety door is closed, the control system can be operated and started by the operator, thereby further improving safety.

[0032] It also includes a three-color alarm light. The pressure detection unit is a pressure transmitter. The pressure detection unit is connected to the control system and can send the pressure information in the gas pipeline to the control system. The three-color alarm light is installed on the top of the frame and is connected to the control system for displaying the pressure detection state. According to the obtained pressure detection value, the three-color alarm light can display different colors. For example, green represents normal operation, yellow represents an abnormal state, and red represents normal and stopped. The operator can more intuitively observe the operating state.

[0033] In addition, multiple groups of the fixing device and the pressure testing device are provided. Specifically, they can be arranged side by side on the frame according to actual needs, saving space and improving work efficiency.

[0034] An air filter is provided at the air inlet end of the intake main pipe to filter the intake air.

[0035] A silencer is provided at the end of the exhaust main pipe to reduce noise.

[0036] The beneficial effects of the present utility model are:

[0037] 1. During pressure testing, only the filter element needs to be placed in the positioning cavity of the positioning seat. The first driving component can drive the positioning sleeve downward to the clamping position, and its pressing flange can jointly clamp the filter element with the supporting flange. The second driving component can then push the half-ring to the locking position, and the two half-rings lock the supporting flange and the pressing flange with each other through the V-shaped card slot. This can not only keep the filter element fixed, with a stable and reliable structure, ensure the pressure detection effect, but also reduce manual operation, making the operation more convenient and greatly improving work efficiency;

[0038] 2. The positioning sleeve is sleeved outside the filter element. In case of an accident such as the explosion of the filter element, the positioning sleeve can also play a role in safety protection, with better safety. Brief Description of the Drawings

[0039] Figure 1 This is a schematic structural view of the filter element pressure testing device according to an embodiment of the present utility model.

[0040] Figure 2 This is a schematic structural view of the fixing device and the pressure testing device according to an embodiment of the present utility model.

[0041] Figure 3 This is a schematic structural view of the positioning seat according to an embodiment of the present utility model.

[0042] Figure 4 This is a schematic structural view of the positioning sleeve according to an embodiment of the present utility model.

[0043] Figure 5 This is a schematic structural view of the positioning snap ring according to an embodiment of the present utility model.

[0044] Figure 6 This is a schematic structural view of the pressure testing device according to an embodiment of the present utility model.

[0045] Figure 7 This is a schematic structural view of the filter element. Detailed Description of the Embodiment

[0046] The following further describes the embodiments of the present utility model with reference to the accompanying drawings.

[0047] As Figure 7 shown, a filter element 9 includes a base 91 and a housing 92. An inlet 93 and an outlet 94 are provided at the lower end of the base 91. The base 91 and the housing 92 are hermetically welded, and an inner filter element (not shown in the figure) is provided inside. Among them, annular convex edges 95 are formed at one end where the base 91 and the housing 92 are combined. When the filter element is used in a filter, the annular convex edges 95 can be pressed by the housing of the filter, so as to prevent the base 91 and the housing 92 from separating under a high-pressure environment, ensuring the stable structure and reliable operation of the filter element 9.

[0048] As Figures 1-6 shown, a filter element pressure testing device is used for testing the pressure sealing performance of a filter element of the type as Figure 7 shown. It includes a frame 1, a fixing device 2, a pressure testing device 3, an intake main pipe 4, an exhaust main pipe 5, and a control system 6.

[0049] The frame 1 includes a frame 11, a working platform 12, a surrounding plate 13, a safety door 14, and traveling wheels 15. The working platform 12 is installed in the middle of the frame 11, thereby dividing the overall frame into upper and lower layers. The surrounding plate 13 is arranged around the outer periphery of the frame, and the safety door 14 is hinged to the front side of the frame in an openable manner.

[0050] Among them, the surrounding plate 13 and the safety door 14 together form a closed working space. During the pressure test, the safety door can be closed. In case of a filter element explosion caused by excessive pressure, the surrounding plate and the safety door can jointly play a role in blocking and protecting, thus playing a safety protection function for the operator and improving safety.

[0051] The walking wheels 15 are arranged at the bottom of the frame 11, which can facilitate the operator to transfer the whole equipment.

[0052] The fixing device 2 is arranged on the working platform 12 of the frame 1 for positioning and fixing the filter element.

[0053] The fixing device 2 includes a positioning seat 21, a positioning sleeve 22, and a positioning snap ring 23. The positioning seat 21 is fixedly installed on the working platform 12 of the frame 1. The positioning seat 21 forms a positioning cavity 211 with an upper opening and adapted to the filter element base. The bottom of the positioning seat 21 is connected with an air inlet joint 212 and an exhaust joint 213. A supporting flange 214 is formed on the outer circle at the upper end of the positioning seat 21.

[0054] The positioning sleeve 22 forms a receiving cavity 221 with a lower opening and adapted to the filter element housing. A pressing flange 222 is formed on the outer circle at the lower end of the positioning sleeve 22. The positioning sleeve 22 is correspondingly arranged above the positioning seat 21 and is connected with a first driving component 223 that can drive it to move up and down. The first driving component 223 can drive the positioning sleeve 22 downward so that the pressing flange 222 of the positioning sleeve 22 and the supporting flange 214 can jointly clamp the annular convex edge of the filter element.

[0055] Among them, the first driving component 223 includes guide posts 2231, a slider 2232, and a screw linear module 2233. There are two guide posts 2231, which are fixedly arranged in parallel on the frame 1. The slider 2232 is slidably arranged on the two guide posts 2231 and is fixedly connected to the side wall of the positioning sleeve 22. The screw linear module 2233 is installed on the frame 1 and is drivingly connected to the slider 2232. With the first driving component having the above structure, a better spatial layout can be achieved, the structure is compact, and the movement is more stable and reliable. Of course, the first driving component 223 can also adopt a cylinder.

[0056] The positioning snap ring 23 includes two semi-rings 231 symmetrically arranged on both sides of the positioning seat 21. A V-shaped card slot 232 is formed on one side of the semi-ring 231 corresponding to the positioning seat 21. The semi-ring 231 is connected with a second driving component 233 capable of driving it to move horizontally. The second driving component 233 can drive the semi-ring 231 to move towards the positioning seat, so that the two semi-rings can jointly clamp the positioning seat. At the same time, the V-shaped card slot 232 on the semi-ring 231 locks the support flange 214 and the pressing flange 222 with each other. Among them, the second driving component can directly adopt a cylinder, and the structure is simpler.

[0057] When using the fixing device 2 to fix the filter element, the operator only needs to place the filter element on the positioning seat 21, that is, put the base of the filter element into the positioning cavity 211 of the positioning seat 21. At the same time, its inlet is plugged into the air inlet joint correspondingly, and the outlet is plugged into the exhaust joint. Then, automatic operation can be realized. First, the first driving component 223 drives the positioning sleeve 22 downward to the clamping position. Its pressing flange 222 can jointly clamp the annular convex edge of the filter element with the support flange 214. Then, the second driving component 233 pushes the semi-ring 231 to the locking position. The two semi-rings 231 can lock the support flange 214 and the pressing flange 222 with each other through the V-shaped card slot 232. With the above fixing device, not only can the filter element be kept fixed, the structure is stable and reliable, ensuring the pressure detection effect, but also manual operation is reduced, the operation is more convenient, and the work efficiency is greatly improved.

[0058] In addition, the positioning sleeve 22 is sleeved outside the filter element. Even in the event of an accident such as the explosion of the filter element, the positioning sleeve 22 can play a role in safety protection, and the safety is better.

[0059] The pressure testing device 3 includes a gas pipeline 31, an intake branch pipe 32, an exhaust branch pipe 34, and a pressure detection unit 36. The gas pipeline 31 is a cross-shaped four-way pipeline, and its four interfaces are respectively communicated with the air inlet joint 212, the intake branch pipe 32, the exhaust branch pipe 34, and the pressure detection unit 36. The intake branch pipe 32 is communicated with the intake main pipe 4, and an intake valve 33 is provided on the intake branch pipe 32. The exhaust branch pipe 34 is communicated with the exhaust main pipe 5, and an exhaust valve 35 is provided on the exhaust branch pipe 34.

[0060] During pressure testing, open the intake valve 33 to inject gas pressure into the filter element. When the pressure reaches the specified value, close the intake valve 33. Then, after maintaining the pressure for a certain time, open the exhaust valve 35 to release the pressure to complete the test. Of course, a manual exhaust valve is installed at one end of the exhaust joint 213. During normal operation, the manual exhaust valve remains in a normally closed state. In special cases, the manual exhaust valve can also be manually opened to exhaust and release the pressure.

[0061] The intake manifold 4 is used for intake air pressurization. An air filter (not shown in the figure) can be installed at the intake end of the intake manifold 4. There is no specific limitation on the air filter itself, and a conventional air filter on the market can be directly selected. The air entering is purified through the air filter, so as to ensure the gas cleanliness and avoid the situation that impurities in the air contaminate the filter element to be tested.

[0062] The exhaust manifold 5 is used for exhaust pressure relief. A muffler (not shown in the figure) can be installed at the end of the exhaust manifold. Similarly, there is no specific limitation on the muffler itself, and a conventional muffler on the market can be directly selected. The noise caused by exhaust is greatly reduced through the muffler, reducing noise pollution and optimizing the working environment.

[0063] The control system 6 is used to receive signal information and output action instructions. The control system 6 is electrically connected to the first driving component, the second driving component, the intake valve, the outlet valve, and the pressure detection unit, and can receive the pressure detection information of the pressure detection unit. At the same time, it can control the actions of the first driving component, the second driving component, the intake valve, and the outlet valve, so as to realize the automatic operation of the filter element pressure testing equipment. Among them, the control system 6 can specifically adopt a PLC controller. The PLC controller is a commonly used digital operation operating system in the existing industrial environment, which usually includes a central processing unit and the memory and various interfaces connected to it. The interfaces include input interfaces, output interfaces, external device interfaces, etc., and can execute instructions for logical operations, sequential control, timing, counting, and arithmetic operations.

[0064] An inductor 61 corresponding to the safety door 14 is provided on the frame 1. The inductor 61 is used to sense the opening and closing state of the safety door 14. The inductor 61 is connected to the control system 6 and can send the opening and closing state information of the safety door 14 to the control system 6. The inductor 61 can adopt a micro switch, a distance sensor, etc., and can be set so that only when the safety door is closed and the control system receives the corresponding information, can it be operated by the operator and start working, avoiding the system being started due to misoperation during the process of the operator disassembling and assembling the filter element, thereby further improving safety.

[0065] A three-color alarm light 62 is also provided on the top of the frame 1. The pressure detection unit 36 is connected to the control system 6 and can send the pressure information in the gas pipeline 31 to the control system 6. The three-color alarm light 62 is also connected to the control system 6 and is used to display the pressure detection state. According to the obtained pressure detection value, the three-color alarm light can display different colors. For example, green represents normal operation, yellow represents an abnormal state, and red represents normal and stopped. The operator can more intuitively observe the operation state.

[0066] Assume that the test pressure is 1.0 MPA and the pressure needs to be maintained for 30 minutes. The working process of the above filter element pressure testing equipment is as follows:

[0067] 1. The operator places the filter element to be tested on the positioning seat, that is, the base of the filter element is placed in the positioning cavity of the positioning seat, its inlet is plugged corresponding to the air inlet joint, and the outlet is plugged with the exhaust joint;

[0068] 2. Close the safety door and start working through the control box of the control system;

[0069] 3. After starting work, the three-color alarm light lights up green, indicating normal operation. The first driving component and the second driving component act successively to fix and hold the filter element. Then the air inlet valve opens and the exhaust valve closes. When the pressure shows 1.0 MPA, close the air inlet valve and keep the pressure for 30 minutes without pressure drop. Then open the exhaust valve to relieve the pressure. When the pressure shows 0, the second driving component and the first driving component act successively to release the lock on the filter element. At the same time, the three-color alarm light lights up red, indicating that everything is normal and the work stops;

[0070] 4. Open the safety door, remove the filter element, and place a new filter element to be tested again.

[0071] During the above working process, if the safety door is not closed, the work cannot be started. If the pressure drops during the pressure holding process, the three-color alarm light will light up yellow, indicating an abnormality, that is, the pressure measurement is unqualified, and the pressure can be relieved in advance and the test can be ended.

[0072] In addition, the fixing device and the pressure testing device can work independently. That is, first fix the filter element through the fixing device, then close the safety door, and finally start the pressure testing device to perform pressure testing. In this way, it is more convenient for the operator to observe the fixing and positioning situation of the filter element first, and avoid inaccurate testing caused by improper fixing of the filter element.

[0073] In addition, multiple groups of the fixing device 2 and the pressure testing device 3 are provided and arranged side by side on the frame 1. When the filter element at one working station is undergoing pressure testing, the operator can simultaneously operate the installation or disassembly of the filter element at another working station, which not only saves space but also further improves work efficiency.

[0074] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0075] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, in the description of the present utility model, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0076] Attention to all technical personnel: Although the present utility model has been described according to the above specific embodiments, the inventive concept of the present utility model is not limited to this utility model only. Any modification using the inventive concept of the present utility model will be included in the scope of protection of this patent right.

Claims

1. A filter element pressure testing device, comprising: Rack(1); A fixing device (2), which is arranged on the frame (1) and is used to fix the filter element (9); A pressure testing device (3), which is arranged on the frame (1) and is used to be connected to the filter element (9) and perform a pressure test; An intake manifold (4) connected to the pressure testing device (3) for intake air pressure boosting; An exhaust manifold (5) connected to the pressure testing device (3) for exhaust pressure relief; It is characterized in that: the fixing device (2) comprises: A positioning seat (21) fixedly mounted on the frame (1), the positioning seat (21) being formed with a positioning cavity (211) with an upper opening and adapted to the filter element base, an air inlet joint (212) and an air outlet joint (213) being connected to the bottom of the positioning seat (21), and a supporting flange (214) being formed on the outer ring of the upper end of the positioning seat (21); A positioning sleeve (22) is formed with a receiving cavity (221) with an opening at the lower end and adapted to the filter element housing, a pressing flange (222) is formed on the outer ring of the lower end of the positioning sleeve (22), and the positioning sleeve (22) is correspondingly arranged above the positioning seat (21) and is connected to a first driving component (223) capable of driving it to move up and down; A positioning snap ring (23), comprising two half rings (231) symmetrically arranged on both sides of the positioning seat (21), a V-shaped snap ring (232) being formed on one side of the half ring (231) corresponding to the positioning seat (21), and the half ring (231) is connected to a second driving component (233) capable of driving the half ring (231) to move horizontally; The positioning sleeve (22) has a clamping position where the pressing flange (222) and the supporting flange (214) jointly clamp the filter element (9), and the half ring (231) has a locking position where the supporting flange (214) and the pressing flange (222) are mutually locked via a V-shaped groove (232).

2. The filter element pressure testing device according to claim 1, characterized in that: It also includes a control system (6), which is electrically connected to the fixing device (2) and the pressure testing device (3) and is used to receive signal information and output action instructions.

3. The filter element pressure testing device according to claim 2, characterized in that: The frame (1) comprises a panel (13) and at least one openable safety door (14); a sensor (61) corresponding to the safety door (14) is provided on the frame (1); the sensor (61) is used to sense the opening and closing state of the safety door (14); the sensor (61) is connected to a control system (6) and can send information on the opening and closing state of the safety door (14) to the control system (6).

4. The filter element pressure testing device according to claim 2, characterized in that: The pressure testing device (3) comprises: A gas pipeline (31) connected to the gas inlet connector (212); An air intake branch pipe (32), two ends of which are respectively connected to the gas pipeline (31) and the air intake main pipe (4), and an air intake valve (33) is provided on the air intake branch pipe (32); An exhaust branch pipe (34), two ends of which are respectively connected to the gas pipeline (31) and the exhaust main pipe (5), and an exhaust valve (35) is provided on the exhaust branch pipe (34); The pressure detection unit (36) is connected to the gas pipeline (31) and is used to detect the gas pressure in the gas pipeline (31) in real time.

5. The filter element pressure testing device according to claim 4, characterized in that: The pressure detection unit (36) is a pressure transmitter, which is connected to the control system (6) and can send pressure information in the gas pipeline (31) to the control system (6).

6. The filter element pressure testing device according to claim 5, characterized in that: It also includes a three-color alarm light (62), which is installed on the top of the frame (1) and connected to the control system (6) for displaying the pressure detection status.

7. The filter element pressure testing device according to claim 1, characterized in that: The first driving component (223) comprises: At least two guide pillars (2231) fixed in parallel on the frame (1); A sliding block (2232) is slidably disposed on the guide post (2231) and fixedly connected to the side wall of the positioning sleeve (22); A screw linear module (2233) is mounted on the frame (1) and is driven to connect to the slider (2232).

8. The filter element pressure testing device according to claim 1, characterized in that: The fixing device (2) and the pressure testing device (3) are both provided in multiple groups.

9. The filter element pressure testing device according to claim 1, characterized in that: An air filter is provided at the air intake end of the air intake manifold (4).

10. The filter element pressure testing device according to claim 1, characterized in that: A muffler is provided at the end of the exhaust manifold (5).

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