A filter cartridge integrity detection device

Abstract

The utility model discloses a filter core integrity detection device relates to filter core detection technical field, specifically includes: detection test bench, liquid tank, left clamping rotary device, right clamping rotary device, filter core, air inlet pipe, the below of filter core is provided with the support mechanism to support the lower surface of filter core, both sides of filter core are provided with trigger mechanism to control the operation of support mechanism. The utility model discloses through support mechanism and left, right clamping rotary device cooperation, realize the automatic support and detection to filter core. After filter core and left clamping rotary device butt joint, the support plate rises the support filter core through the trigger of pressure sensor, liberates the right hand of staff, can solve the problem of arm soreness or hand tremor influence alignment caused by single hand holding up filter core. Before filter core rotates, electric telescopic handle controls the support plate and moves down and separates from filter core end cover, avoids the abrasion of filter core and support plate when rotating, causes the problem of the abrasion particle with liquid flow and enter filter core aperture.

Description

Technical Field

[0001] This utility model relates to the field of filter element testing technology, and specifically to a filter element integrity testing device. Background Technology

[0002] Filter cartridges are key components in filtration equipment, commonly found in water pipes and air purifiers. They are typically made of porous materials with numerous tiny pores on their surface and inside. When fluid passes through, impurities are trapped, allowing pure fluid to pass. However, during use, filter cartridges may become damaged, clogged, or have altered pore size due to pressure changes, impurity impacts, or material aging, affecting their filtration performance. Therefore, a filter cartridge integrity testing device is needed to check its integrity and ensure its filtration effectiveness.

[0003] The filter cartridge testing device can test the filter cartridge using the bubble point method. This involves immersing the filter cartridge in a liquid tank for several minutes to ensure its pores are fully wetted. This step helps in accurately observing bubble formation when pressure is applied during subsequent testing (bubble point method). However, the current operating procedure has some problems: for example, the operator needs to hold the filter cartridge with one hand to align it with the clamping and rotating device on one end, while simultaneously operating a button with the other hand to extend the clamping and rotating device on the other side to secure the other end of the filter cartridge. For heavier filter cartridges, holding it with one hand can easily lead to arm pain.

[0004] Meanwhile, when staff lift the filter element with one hand, hand tremors may occur, further affecting the alignment accuracy of the filter element, resulting in uneven pressure distribution during the testing process, affecting the test results of the initial bubbling point, and thus affecting the integrity test of the filter element.

[0005] In summary, a filter element integrity testing device needs to be developed to solve the above problems. Utility Model Content

[0006] To address the shortcomings of existing technologies, the technical solution adopted by this utility model is: a filter element integrity detection device, specifically comprising: The test bench, liquid tank, left clamping and rotating device, right clamping and rotating device, filter element, and air inlet pipe are provided. A support mechanism is provided below the filter element to support the lower surface of the filter element. Triggering mechanisms are provided on both sides of the filter element to control the operation of the support mechanism. The testing bench is used to assess whether the filter element is damaged during manufacturing, testing, and use. This testing bench uses the bubble point method to test the filter element, evaluating its maximum pore size and integrity by measuring the pressure at which bubbles begin to appear on the filter element's surface. The left and right clamping rotating devices are respectively located on the inner wall of the liquid tank, allowing for quick clamping and rotation of the test filter element. The inner wall of the liquid tank contains the test liquid, i.e., industrial alcohol, used to immerse the filter element during testing, ensuring that the pores of the filter element are fully wetted for integrity testing. The bottom end of the air inlet pipe is installed on the upper surface of the left clamping rotating device, supplying air to its interior. However, some parts of the left clamping rotating device do not rotate with the air inlet pipe.

[0007] Furthermore, the left clamping rotating device and the right clamping rotating device are respectively installed on the inner wall of the testing bench, the filter element is disposed between the left clamping rotating device and the right clamping rotating device, the lower surface of the support mechanism is fixedly connected to the inner wall of the liquid tank, and the triggering mechanism is respectively installed on the upper surface of the left clamping rotating device and the right clamping rotating device.

[0008] Furthermore, the support mechanism includes: A support plate is provided, with a sliding rod fixedly connected to the center of its lower surface. A protective box is slidably connected to the outer surface of the sliding rod. An electric telescopic rod is fixedly connected to the bottom end of the sliding rod, and a wireless controller is installed at the bottom of the electric telescopic rod.

[0009] Furthermore, the upper surface of the support plate is configured as an arc shape, and the bottom of the protective box is installed on the inner wall of the liquid tank. The arc shape of the support plate facilitates support for the lower surface of the filter element, and the outer surface of the slide bar forms a seal with the inner surface of the protective box to prevent the electric telescopic rod and wireless controller inside the protective box from being contaminated or soaked by the test liquid.

[0010] Furthermore, the electric telescopic rod is installed inside the inner wall of the protective box, and the wireless controller is installed inside the inner wall of the protective box.

[0011] Furthermore, the triggering mechanism includes: A fixing ring is provided, and a sealing tube is installed on the upper surface of the fixing ring. A sealing cap is threadedly connected to the upper part of the inner surface of the sealing tube, and a pressing component is slidably connected to the inner wall of the sealing tube.

[0012] Further, the extrusion component includes: A compression rod has a compression spring fixedly connected to one end. A first limiting plate is fixedly connected to the end of the compression spring away from the compression rod. A pull rope is slidably connected to the inner wall of the first limiting plate, and a second limiting plate is slidably connected to the outer surface of the pull rope. A connecting spring is mounted on the upper surface of the second limiting plate, and a rubber plate is mounted on the top of the connecting spring. A pressure sensor is positioned directly above the rubber plate. Both the first and second limiting plates limit the sliding path of the pull rope and provide support for the compression spring and connecting spring, respectively.

[0013] Furthermore, auxiliary components are provided on both sides of the pressure sensor, and a power module is electrically connected to the upper surface of the pressure sensor via wires. A support box is mounted on the outer surface of the power module. The support box is installed on the inner wall of the sealed tube and is symmetrically arranged on both sides of the pressure sensor, but the power module is only installed on the inner wall of one side of the support box.

[0014] Furthermore, the auxiliary component includes: A pull ring has a pull rod fixed to its outer surface. A limit tube is provided on the outside of the pull rod. An auxiliary spring is provided on the inner wall of the limit tube. A first magnetic block is installed on the inner wall of the limit tube. A connecting tube is slidably connected to the inner wall of the limit tube. A second magnetic block is installed on the inner wall of the connecting tube. The auxiliary spring functions the same as a normal spring, possessing both elasticity and a return function. The first and second magnetic blocks are mutually attracted.

[0015] Furthermore, the auxiliary components are symmetrically arranged on both sides of the pressure sensor, the outer surface of the pull rod is slidably connected to the inner surface of the sealing tube, the end of the pull rod away from the pull ring is fixedly connected to the side of the connecting tube away from the pressure sensor, the side of the limiting tube near the pull ring is fixedly connected to the inner wall of the sealing tube, and the end of the auxiliary spring near the pull ring is fixedly connected to the inner wall of the sealing tube.

[0016] Furthermore, the limiting tube is fixedly connected to the inner wall of the sealing tube on the side near the pull ring, and the auxiliary spring is fixedly connected to the inner wall of the sealing tube on the end near the pull ring. The auxiliary spring surrounds the outside of the pull rod, and the end of the auxiliary spring away from the pull ring is fixedly connected to the side of the connecting tube away from the pressure sensor. The side of the connecting tube near the pressure sensor is sleeved with the circular protrusion at the center of the side end of the pressure sensor. In this device, the pressure sensor is fixed by the connecting tubes on both sides of the pressure sensor.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model achieves automatic support and inspection of the filter element through the coordinated operation of the support mechanism and the left and right clamping and rotating devices. After the filter element is connected to the left clamping and rotating device, the support plate rises to support the filter element through the triggering of a pressure sensor, freeing the operator's right hand and solving the problem of arm pain or hand tremors affecting alignment caused by holding the filter element with one hand. Before the filter element rotates, the electric telescopic rod controls the support plate to move down and detach from the filter element end cap, avoiding wear between the filter element and the support plate during rotation, which could lead to wear particles entering the filter element pores with the liquid flow.

[0018] 2. By setting a pressure sensor in the triggering mechanism, this utility model works in conjunction with the electric telescopic rod and the support plate to ensure that when the left end cover of the filter element slides and connects with the left clamping and rotating device, the upper surface of the support plate is disengaged from the lower surface of the right end cover of the filter element, thus avoiding the problem of slip friction between the two, which may also lead to wear particles.

[0019] 3. This invention uses a rubber plate to compress the pressure sensor. The high pressure of the rubber plate ensures reliable triggering between the pressure sensor and the rubber plate, improving detection accuracy. Simultaneously, the support box and auxiliary components limit and fix the pressure sensor, preventing it from shifting or losing pressure due to excessive force, which could lead to the sensor failing to detect pressure.

[0020] 4. This utility model achieves rapid retrieval, testing, and replacement of the pressure sensor through the cooperation of a pull ring, a pull rod, and two magnetic blocks. The mutual attraction of the two magnetic blocks ensures that when the operator pulls the pull ring with both hands to a certain position, the magnetic blocks limit the position of the pull ring, allowing the operator to free up their hands to remove the pressure sensor from the sealed tube. This avoids the problem that the position of the pull ring cannot be limited, and the outward-pulled connecting pipe has a tendency to reset under the elastic force of the auxiliary spring, which would prevent the operator from freeing up their hands to remove the pressure sensor from the inner wall of the sealed tube. Attached Figure Description

[0021] Figure 1 This is the front view of this utility model; Figure 2 This is a schematic diagram of the structure of the liquid tank of this utility model; Figure 3 This is a schematic diagram of the support mechanism of this utility model; Figure 4 This is a schematic diagram of the triggering mechanism of this utility model; Figure 5 This is a cross-sectional view of the sealing tube of this utility model; Figure 6 This is a schematic diagram of the structure of the auxiliary component of this utility model; Figure 7 This is a utility model Figure 6 Enlarged view of point A in the middle.

[0022] In the diagram: 1. Testing bench; 2. Liquid tank; 3. Left clamping and rotating device; 4. Right clamping and rotating device; 5. Filter element; 6. Support mechanism; 61. Support plate; 62. Sliding bar; 63. Protective box; 64. Electric telescopic rod; 65. Wireless controller; 7. Triggering mechanism; 71. Fixing ring; 72. Sealing tube; 73. Sealing cover; 74. Extrusion component; 741. Extrusion rod; 742. Extrusion spring; 743. ... 744. Limiting plate; 745. Pull rope; 746. Second limiting plate; 747. Connecting spring; 748. Rubber plate; 749. Pressure sensor; 740. Auxiliary component; 7491. Pull ring; 7492. Pull rod; 7493. Limiting tube; 7494. Auxiliary spring; 7495. First magnetic block; 7496. Connecting tube; 7497. Second magnetic block; 750. Power module; 751. Support box; 8. Air inlet pipe. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose. Example 1

[0024] Please see Figure 1 - Figure 3 This utility model provides a technical solution: a filter element integrity detection device, specifically comprising: The test bench consists of a liquid tank, a left clamping and rotating device, a right clamping and rotating device, and a filter element. A support mechanism 6 is provided below the filter element 5 to support the lower surface of the filter element 5. Triggering mechanisms 7 are provided on both sides of the filter element 5 to control the operation of the support mechanism 6. The testing bench 1 is used to evaluate whether the filter element 5 is damaged during manufacturing, testing, and use. The testing bench 1 tests the filter element 5 using the bubble point method, and evaluates the maximum pore size and integrity of the filter element 5 by measuring the pressure value at which bubbles begin to appear on the surface of the filter element 5. The left clamping rotating device 3 and the right clamping rotating device 4 are respectively installed on the inner wall of the liquid tank 2, which can quickly clamp the test filter element 5 and complete the rotation action. The inner wall of the liquid tank 2 contains the test liquid, namely industrial alcohol, which is used to immerse the filter element 5 during the test to ensure that the pores of the filter element 5 are fully wetted by the liquid for integrity testing. The bottom end of the air inlet pipe 8 is installed on the upper surface of the left clamping rotating device 3. The air inlet pipe 8 supplies air to the inside of the left clamping rotating device 3 and further transmits the gas to the inside of the filter element 5. When some parts of the left clamping rotating device 3 rotate, they do not drive the rotation of the air inlet pipe 8.

[0025] The left clamping rotating device 3 and the right clamping rotating device 4 are respectively installed on the inner wall of the test bench 1. The filter element 5 is set between the left clamping rotating device 3 and the right clamping rotating device 4. The lower surface of the support mechanism 6 is fixed to the inner wall of the liquid tank 2. The triggering mechanism 7 is respectively installed on the upper surface of the left clamping rotating device 3 and the right clamping rotating device 4.

[0026] Supporting institutions 6 include: A support plate 61 is provided, and a sliding rod 62 is fixedly connected to the center of the lower surface of the support plate 61. A protective box 63 is slidably connected to the outer surface of the sliding rod 62. An electric telescopic rod 64 is fixedly connected to the bottom end of the sliding rod 62, and a wireless controller 65 is installed at the bottom of the electric telescopic rod 64.

[0027] The upper surface of the support plate 61 is curved, and the bottom of the protective box 63 is installed on the inner wall of the liquid tank 2. The curved surface of the support plate 61 facilitates the support of the lower surface of the filter element 5. The outer surface of the slide bar 62 forms a seal with the inner surface of the protective box 63 to prevent the electric telescopic rod 64 and the wireless controller 65 inside the protective box 63 from being contaminated and soaked by the test liquid.

[0028] The electric telescopic pole 64 is installed in the inner wall of the protective box 63, and the wireless controller 65 is installed in the inner wall of the protective box 63.

[0029] The working principle is as follows: First, the staff pours an appropriate amount of test solution into the liquid tank 2, then places the filter element 5 into the liquid tank 2, aligning one end of the filter element 5 with the left clamping rotating device 3. Then, using the other hand, they press the start button. Because the liquid tank 2 of the test bench has a clamping rotating device inside, the right clamping rotating device 4 can quickly extend and clamp the right end of the filter element 5, preparing for the subsequent rotation. The filter element 5 needs to be soaked in the liquid tank 2 for at least five minutes. Then, the left clamping rotating device 3 and the right clamping rotating device 4 work together to slowly rotate the filter element 5 around its axis. Meanwhile, one end of the air inlet pipe 8 is connected to a gas supply source, and the other end is connected to the upper surface of the left clamping rotating device 3. When the integrity of the filter element 5 needs to be tested, the gas is transmitted through the air inlet pipe 8 to the interior of the left clamping rotating device 3. Under the guidance and transmission action, the gas is further transmitted to the interior of the filter element 5, providing a gas source for the interior of the filter element 5. At the same time, during the gas transmission process, the setting of the left clamping rotating device 3 and the right clamping rotating device 4 ensures that both sides of the filter element 5 are in a sealed state, preventing gas leakage from both ends of the filter element 5. In this way, when the gas enters the interior of the filter element 5, the pressure inside the filter element 5 will gradually increase as the gas is continuously input. At this time, observe whether bubbles appear on the surface of the filter element 5. If bubbles appear, it indicates that the filter element 5 has pores or defects; otherwise, the filter element integrity is good. Finally, the air inlet pipe 8 is embedded in the inner wall of the test bench 1 and is supplied with gas through an external gas supply source. Since the gas supply source is existing equipment, the embedded part of the air inlet pipe 8 and the gas supply source in this device are not shown.

[0030] However, when the operator starts the button with one hand to drive the right clamping and rotating device 4, the left hand needs to support the heavy filter element 5 alone, which can easily lead to arm pain or hand tremors and inaccurate positioning. Therefore, a support mechanism 6 was designed to solve this problem.

[0031] When filter element 5 is docked with the left clamping and rotating device 3, the lower surface of the right end cap of filter element 5 can be placed on the upper surface of the support plate 61, using the support plate 61 to support filter element 5, thus freeing the operator's left hand. However, when the left and right clamping and rotating devices 4 control the rotation of filter element 5, if the support plate 61 continues to support the lower surface of the right end cap of filter element 5, the end cap of filter element 5 will experience rotational friction with the support plate 61 during rotation. This friction may cause wear, and the generated particles may enter the pores of filter element 5 with the liquid flow, thus affecting the integrity test results of filter element 5. Therefore, before filter element 5 starts to rotate, the electric extension rod can be activated to control the downward movement of the slide bar 62 and the support plate 61, so that the support plate 61 is disengaged from the lower surface of the end cap of filter element 5, avoiding wear during subsequent rotation.

[0032] Furthermore, during the process of lowering the filter element 5 into the liquid tank 2, it is necessary to first ensure that the filter element 5 and the left clamping rotating device 3 are on the same horizontal line, and then move the filter element 5 and align it with the end of the left clamping rotating device 3. During this process, if the support plate 61 comes into contact with the lower surface of the end cap of the filter element 5, wear may also occur due to sliding friction. Therefore, in the initial state, the support plate 61 should maintain a certain distance from the lower surface of the right end cap of the filter element 5. After the left side of the filter element 5 is aligned with the left clamping rotating device 3, the right end cap of the filter element 5 is then supported by the support plate 61. Example 2

[0033] Please see Figure 1 - Figure 7 This utility model provides a technical solution: based on embodiment one, the triggering mechanism 7 includes: A fixing ring 71 is provided, and a sealing tube 72 is installed on the upper surface of the fixing ring 71. A sealing cap 73 is threadedly connected to the upper part of the inner surface of the sealing tube 72, and a pressing component 74 is slidably connected to the inner wall of the sealing tube 72.

[0034] The extrusion component 74 includes: A compression rod 741 is provided, with a compression spring 742 fixedly connected to one end. A first limiting plate 743 is fixedly connected to the end of the compression spring 742 away from the compression rod 741. A pull rope 744 is slidably connected to the inner wall of the first limiting plate 743, and a second limiting plate 745 is slidably connected to the outer surface of the pull rope 744. A connecting spring 746 is installed on the upper surface of the second limiting plate 745, and a rubber plate 747 is installed at the top of the connecting spring 746. A pressure sensor 748 is positioned directly above the rubber plate 747. Both the first limiting plate 743 and the second limiting plate 745 limit the sliding path of the pull rope 744 and provide support for the compression spring 742 and the connecting spring 746, respectively.

[0035] Auxiliary components 749 are provided on both sides of the pressure sensor 748. A power module 750 is electrically connected to the upper surface of the pressure sensor 748 via wires. A support box 751 is mounted on the outer surface of the power module 750. The support box 751 is installed on the inner wall of the sealing tube 72 and is symmetrically arranged on both sides of the pressure sensor 748, but the power module 750 is only installed on the inner wall of one side of the support box 751. The power module 750 supplies power to the pressure sensor 748 via wires. The pressure sensor 748 in this device is a wireless pressure sensor 748.

[0036] Auxiliary component 749 includes: A pull ring 7491 is provided, and a pull rod 7492 is fixedly attached to the outer surface of the pull ring 7491. A limit tube 7493 is provided on the outside of the pull rod 7492. An auxiliary spring 7494 is provided on the inner wall of the limit tube 7493. A first magnet 7495 is installed on the inner wall of the limit tube 7493. A connecting tube 7496 is slidably connected to the inner wall of the limit tube 7493. A second magnet 7497 is installed on the inner wall of the connecting tube 7496. The auxiliary spring 7494 has the same function as a normal spring, both having elasticity and reset functions; the first magnet 7495 and the second magnet 7497 are mutually attracted.

[0037] Auxiliary components 749 are symmetrically arranged on both sides of pressure sensor 748. The outer surface of pull rod 7492 is slidably connected to the inner surface of sealing tube 72. The end of pull rod 7492 away from pull ring 7491 is fixedly connected to the side of connecting tube 7496 away from pressure sensor 748. The side of limiting tube 7493 near pull ring 7491 is fixedly connected to the inner wall of sealing tube 72. The end of auxiliary spring 7494 near pull ring 7491 is fixedly connected to the inner wall of sealing tube 72.

[0038] The limiting tube 7493 is fixedly connected to the inner wall of the sealing tube 72 on the side near the pull ring 7491. The auxiliary spring 7494 is fixedly connected to the inner wall of the sealing tube 72 on the end near the pull ring 7491. The auxiliary spring 7494 surrounds the outside of the pull rod 7492. The end of the auxiliary spring 7494 away from the pull ring 7491 is fixedly connected to the side of the connecting tube 7496 away from the pressure sensor 748. The side of the connecting tube 7496 near the pressure sensor 748 is sleeved with the circular protrusion at the center of the side end of the pressure sensor 748. This device fixes the pressure sensor 748 through the connecting tubes 7496 on both sides of the pressure sensor 748.

[0039] The working principle is as follows: As mentioned above, the support plate 61 will contact or separate from the lower surface of the right end cap of the filter element 5 at different stages. At this time, the trigger mechanism 7 needs to control the operation of the support mechanism 6.

[0040] When the left end cap of filter element 5 first aligns with the left clamping rotating device 3, it will cause the compression rod 741 on the inner wall of the sealing tube 72 to slide, causing it to slide along the inner wall of the sealing tube 72 towards the compression spring 742, thereby compressing the compression spring 742. In the initial stage, the elastic force of the compression spring 742 is greater than that of the connecting spring 746. Therefore, the compressive force of the compression spring 742 on the compression rod 741 is greater than that of the connecting spring 746 on the rubber plate 747. This causes the compression rod 741 to pull the rubber plate 747 down along the inner wall of the sealing tube 72 via the pull rope 744, and press the connecting spring 746. At this time, the pull rope 744 is in a taut state.

[0041] Therefore, when the extrusion rod 741 slides towards the inner wall of the sealing tube 72, the originally taut pull rope 744 will become loose. After losing the tension of the pull rope 744, the rubber plate 747 will slide upward along the inner wall of the sealing tube 72 under the elastic reset of the connecting spring 746 and come into contact with the pressure sensor 748 directly above. When the pressure sensor 748 senses the signal, it determines that the extrusion rod 741 is being squeezed by the left end cap of the filter element 5, indicating that the left side of the filter element 5 has been successfully docked with the left clamping rotating device 3. At this time, the pressure signal detected by the pressure sensor 748 is wirelessly transmitted to the wireless controller 65. After receiving the signal, the wireless controller 65 can control the extension of the electric telescopic rod 64, so that the support plate 61 rises to the lower surface of the right end cap of the filter element 5 to support the right end cap of the filter element 5.

[0042] Similarly, when the right clamping and rotating device 4 on the right side aligns with the right end cap of the filter element 5, the triggering mechanism 7 on the right side is touched, and the wireless pressure sensor 748 on the right side transmits the signal to the wireless controller 65 again, thereby controlling the retraction of the electric telescopic rod 64, so that the support plate 61 is removed from the lower surface of the filter element 5, thus preventing the support plate 61 from causing wear to the filter element 5 during the rotation process.

[0043] After the filter element 5 completes the integrity test, the right clamping rotating device 4 first disengages from the right end cap of the filter element 5, then removes the filter element 5 from the left clamping rotating device 3 and takes it out of the liquid tank 2. During this process, the support plate 61 located below the filter element 5 does not contact the lower surface of the filter element 5 until the next time the filter element 5 touches the left clamping rotating device 3, at which point the support plate 61 will rise again.

[0044] In this device, pressure signals are detected by squeezing pressure sensor 748 against a rubber plate 747. However, due to the small size and weight of pressure sensor 748, it may shift when the rubber plate 747 pushes it upwards. Therefore, support boxes 751 are provided on both sides of pressure sensor 748 to limit and support it, preventing it from shifting to the left or right. Simultaneously, auxiliary components 749 further fix the sides of pressure sensor 748 to prevent excessive pushing force from the rubber plate 747, which could cause pressure sensor 748 to move upwards, resulting in pressure loss and inability to detect a signal. Because pressure sensor 748 is lightweight while the rubber plate 747 has a large pushing force, the combination of these two factors ensures reliable triggering between the sensor and the rubber plate 747, improving the detection accuracy of pressure sensor 748.

[0045] The pressure sensor 748 is located inside the sealing tube 72 and requires periodic calibration and inspection every few years. When the pressure sensor 748 needs to be tested or replaced, the operator, with no test liquid in the liquid tank 2, pulls the pull ring 7491 with both hands to move it away from the pull rod 7492. This moves the pull rod 7492 and the connecting tube 7496, causing the connecting tube 7496 to detach from both sides of the pressure sensor 748. During the movement of the connecting tube 7496, it compresses the auxiliary spring 7494. Simultaneously, a first magnetic block 7495 and a second magnetic block 7497 are respectively installed on the inner walls of the connecting tube 7496 and the limiting tube 7493. Both have strong magnetic attraction, but the attraction force is less than... The pulling force of the hand causes the first magnetic block 7495 to slide to the appropriate position when the connecting tube 7496 moves it. The first magnetic block 7495 and the second magnetic block 7497 attract each other, and the operator will feel resistance. At this time, the pull ring 7491 is released, and the connecting tube 7496 stops moving under the attraction of the two magnetic blocks. The pressure sensor 748 is no longer fixed by the connecting tubes 7496 on both sides. Then, the sealing cover 73 is unscrewed from the inner wall of the sealing tube 72, and the opening at the top of the sealing tube 72 is opened, so that the pressure sensor 748 can be taken out from the inner wall of the sealing tube 72 quickly.

[0046] Because the pull rings 7491 are symmetrically arranged, both hands need to pull the pull rings 7491 simultaneously. The outwardly pulled connecting tube 7496 tends to return to its original position under the elastic force of the auxiliary spring 7494. Therefore, it is impossible to free up the other hand to pick up the pressure sensor 748 from the inner wall of the sealing tube 72. Thus, the adsorption of the two magnetic plates can limit the position of the moved connecting tube 7496, ensuring that there are certain gaps on both sides of the pressure sensor 748, so that the operator can pick up the pressure sensor 748 from the inner wall of the sealing tube 72 with one hand.

[0047] Similarly, when it is necessary to reposition the pressure sensor 748 onto the inner wall of the sealing tube 72, the pressure sensor 748 can be placed on the surface of the support box 751, and then the pull ring 7491 can be pushed to slide along the inner wall of the limiting tube 7493 towards the side closer to the pressure sensor 748. The connecting tube 7496 will also be finally connected to the pressure sensor 748 under the reset elasticity of the auxiliary spring 7494, thus fixing it.

[0048] The workflow is as follows: First, this device, through the coordinated operation of the support mechanism 6 and the left and right clamping and rotating devices 4, achieves automatic support and detection of the filter element 5. After the filter element 5 is connected to the left clamping and rotating device 3, the support plate 61 rises to support the filter element 5 upon triggering by the pressure sensor 748, freeing the operator's right hand and solving the problem of arm pain or hand tremors affecting alignment caused by holding the filter element 5 with one hand. Before the filter element 5 rotates, the electric telescopic rod 64 controls the support plate 61 to move downwards and detach from the end cap of the filter element 5, avoiding wear between the filter element 5 and the support plate 61 during rotation, which could lead to wear particles entering the pores of the filter element 5 with the liquid flow.

[0049] Secondly, by setting the pressure sensor 748 in the trigger mechanism 7, this device works in conjunction with the electric telescopic rod 64 and the support plate 61. When the left end cover of the filter element 5 slides and connects with the left clamping rotating device 3, the upper surface of the support plate 61 is separated from the lower surface of the right end cover of the filter element 5, thus avoiding the problem of wear particles that may be caused by sliding friction between the two.

[0050] Subsequently, the device compresses the pressure sensor 748 using a rubber plate 747. The relatively high pressure of the rubber plate 747 ensures reliable triggering between the pressure sensor 748 and the rubber plate 747, improving detection accuracy. Simultaneously, the support box 751 and auxiliary components 749 limit and fix the pressure sensor 748, preventing it from shifting or losing pressure due to excessive force, which could lead to the pressure sensor 748 failing to detect pressure.

[0051] Finally, the cooperation of the pull ring 7491, pull rod 7492, and two magnetic blocks enables the rapid retrieval, inspection, and replacement of the pressure sensor 748. The mutual attraction of the two magnetic blocks ensures that when the operator pulls the pull ring 7491 with both hands to a certain position, the magnetic blocks limit the position of the pull ring 7491, allowing the operator to free up their hands to remove the pressure sensor 748 from the sealing tube 72. This avoids the problem that the position of the pull ring 7491 cannot be limited, and the outwardly pulled connecting tube 7496 has a tendency to reset at any time under the elastic force of the auxiliary spring 7494, which would prevent the operator from freeing up their hands to remove the pressure sensor 748.

[0052] The smaller pressure sensor 748 in this device better fits the limited installation space without affecting the normal operation of other components. The trigger mechanism 7, mounted on the surface of the right clamping rotating device 4, is a certain distance from the protective box 63 below, preventing it from colliding with the protective box 63 and causing damage during rotation. Simultaneously, the clamping of the pressure sensor 748 by the auxiliary component 749 on both sides prevents potential positional slippage due to centrifugal force during rotation with the sealing tube 72, as the bottom of the sealing cover 73 is not in close contact with the upper surface of the pressure sensor 748. After the device completes the integrity test of the filter element 5, the air inlet pipe 8 stops supplying air to the interior of the left clamping rotating device 3.

[0053] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A filter cartridge integrity detection device, specifically comprising: The test bench (1), liquid tank (2), left clamping and rotating device (3), right clamping and rotating device (4), filter element (5), and air inlet pipe (8) are characterized in that: a support mechanism (6) is provided below the filter element (5) to support the lower surface of the filter element (5), and triggering mechanisms (7) are provided on both sides of the filter element (5) to control the operation of the support mechanism (6).

2. The filter element integrity testing device according to claim 1, characterized in that: The left clamping rotating device (3) and the right clamping rotating device (4) are respectively installed on the inner wall of the test bench (1), the filter element (5) is set between the left clamping rotating device (3) and the right clamping rotating device (4), the lower surface of the support mechanism (6) is fixed to the inner wall of the liquid tank (2), and the triggering mechanism (7) is respectively installed on the upper surface of the left clamping rotating device (3) and the right clamping rotating device (4).

3. The filter element integrity testing device according to claim 1, characterized in that: The support mechanism (6) includes: A support plate (61) is provided, and a slide bar (62) is fixedly connected to the center of the lower surface of the support plate (61). A protective box (63) is slidably connected to the outer surface of the slide bar (62). An electric telescopic rod (64) is fixedly connected to the bottom end of the slide bar (62). A wireless controller (65) is installed at the bottom of the electric telescopic rod (64).

4. The filter element integrity testing device according to claim 3, characterized in that: The upper surface of the support plate (61) is set as an arc surface, and the bottom of the protective box (63) is installed on the inner wall of the liquid tank (2).

5. The filter element integrity testing device according to claim 4, characterized in that: The electric telescopic rod (64) is installed in the inner wall of the protective box (63), and the wireless controller (65) is installed in the inner wall of the protective box (63).

6. The filter element integrity testing device according to claim 1, characterized in that: The triggering mechanism (7) includes: A fixing ring (71) is provided with a sealing tube (72) installed on its upper surface. A sealing cap (73) is threaded onto the upper part of the inner surface of the sealing tube (72). An extrusion component (74) is slidably connected to the inner wall of the sealing tube (72).

7. The filter element integrity testing device according to claim 6, characterized in that: The extrusion component (74) includes: A compression rod (741) is provided, with a compression spring (742) fixedly connected to one end of the compression rod (741). A first limiting plate (743) is fixedly connected to the end of the compression spring (742) away from the compression rod (741). A pull rope (744) is slidably connected to the inner wall of the first limiting plate (743). A second limiting plate (745) is slidably connected to the outer surface of the pull rope (744). A connecting spring (746) is installed on the upper surface of the second limiting plate (745). A rubber plate (747) is installed at the top of the connecting spring (746). A pressure sensor (748) is provided directly above the rubber plate (747).

8. The filter element integrity testing device according to claim 7, characterized in that: Auxiliary components (749) are provided on both sides of the pressure sensor (748). A power module (750) is electrically connected to the upper surface of the pressure sensor (748) through wires. A support box (751) is installed on the outer surface of the power module (750).

9. The filter element integrity testing device according to claim 8, characterized in that: The auxiliary component (749) includes: A pull ring (7491) is provided. A pull rod (7492) is fixedly connected to the outer surface of the pull ring (7491). A limit tube (7493) is provided on the outside of the pull rod (7492). An auxiliary spring (7494) is provided on the inner wall of the limit tube (7493). A first magnetic block (7495) is installed on the inner wall of the limit tube (7493). A connecting tube (7496) is slidably connected to the inner wall of the limit tube (7493). A second magnetic block (7497) is installed on the inner wall of the connecting tube (7496).

10. The filter element integrity testing device according to claim 9, characterized in that: The auxiliary components (749) are symmetrically arranged on both sides of the pressure sensor (748). The outer surface of the pull rod (7492) is slidably connected to the inner surface of the sealing tube (72). The end of the pull rod (7492) away from the pull ring (7491) is fixedly connected to the side of the connecting tube (7496) away from the pressure sensor (748).

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