Multifunctional filter core checking device

Abstract

The application discloses a kind of filter core multifunctional verification devices, including rack, be placed in the rack for placing filter core filter core support, be placed in the filter core support for checking inside filter core endoscope device, be placed in the rack for being fixed on filter core support to filter core is carried out and is watered water spraying device, for fixing water test paper test paper fixed structure, and be placed in the rack for driving filter core on the filter core support around its own week rotation drive device.The verification device provided by the application can carry out water spraying experiment, test whether there is water leakage in filter core during water spraying experiment, and check the pollution in filter core, meet the test of various performances when checking filter core regularly, simple and convenient operation.

Description

Technical Field

[0001] This invention relates to the field of filter element testing technology, and more specifically, to a multifunctional filter element testing device. Background Technology

[0002] Aviation fuel separator filters require regular inspection and testing to ensure their filtration effectiveness. During inspection and testing, in addition to visually inspecting the filter's surface and testing its hydrophobicity, the internal structure must also be checked to observe the degree of internal contamination and determine if replacement is necessary. The hydrophobicity test involves spraying water onto the filter surface to observe for any water seepage. Simultaneously, the internal structure must be observed for water penetration. If the filter is functioning properly and there is no external damage, water droplets should not be able to penetrate the sidewalls and enter the inner wall of the filter.

[0003] Chinese patent document CN114166697A discloses a method and apparatus for testing a water spraying method for a filter element. The method includes the following steps: placing the filter element horizontally on a fixed frame; adjusting the distance between the top surface of the filter element and the outlet of the spraying device to 75mm using an adjusting device; moving the spraying device to one end of the filter element; turning on the spraying device to allow water to flow down from both sides of the filter element's axis; moving the spraying device from one end of the filter element to the other at a constant speed; observing whether water has seeped into the pores on the surface of the sprayed filter element; if not, rotating the filter element 45° around its axis and spraying water again until the filter element has rotated one revolution; if water has seeped in, cleaning the filter element and retesting; the invention also provides an apparatus for testing a water spraying method for a filter element. This invention enables a simple and convenient water spray test on the separator filter element. The use of the device ensures that the water flow can be uniformly distributed from the highest point of the separator filter element at a suitable height during the water spray test, thus avoiding the impact of improper manual operation on the test results.

[0004] However, the above solution only targets the water spray test part of the filter element inspection and testing. It cannot observe whether water enters the filter element from the side wall during the water spray test, nor does it have the function of observing the inside of the filter element. The function is relatively simple and cannot meet the requirements of checking and testing all aspects of the filter element's performance. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of existing filter cartridge water spray test methods and devices, which only perform water spray tests on filter cartridges and have limited functionality, failing to meet the requirements for various performance checks of filter cartridges. This invention provides a multifunctional filter cartridge calibration device. In addition to performing water spray tests, the calibration device can also test for water permeability inside the filter cartridge during the water spray test, and can also check the internal contamination status of the filter cartridge. This satisfies the requirements for testing various performance aspects during periodic filter cartridge inspections, and is simple and convenient to operate.

[0006] The objective of this invention can be achieved using the following technical solutions:

[0007] A multifunctional filter cartridge calibration device includes a frame, a filter cartridge support mounted on the frame for placing the filter cartridge, an endoscope mounted on the filter cartridge support for inspecting the interior of the filter cartridge, a water spraying device mounted on the frame for spraying water onto the filter cartridge fixed on the filter cartridge support, a test paper fixing structure for fixing water testing paper, and a drive device mounted on the frame for driving the filter cartridge to rotate around its own circumference on the filter cartridge support.

[0008] The multifunctional filter cartridge calibration device provided by this invention, in addition to its water spray test function, also allows for the direct observation of the degree of contamination inside the filter cartridge via an endoscope. This is achieved by fixing water-measuring colorimetric test strips, such as cobalt chloride test strips, to a fixed structure on the test strip during the water spray test, changing their color from blue to purple upon contact with water. Furthermore, the device can be used to directly observe the degree of contamination inside the filter cartridge. This observation can be performed independently or simultaneously during the water spray test, where the filter cartridge is rotated around its own axis by a driving device.

[0009] Furthermore, the filter element support includes a support rod supported on the frame at both ends, a sleeve sleeved on the support rod, and end caps located at both ends of the filter element. The end caps include a first end cap and a second end cap. The axes of the support rod, the sleeve, the first end cap, and the second end cap are all located on the same straight line. One end of the sleeve is fixedly connected to the frame. The first end cap is sleeved on one end of the sleeve or on the support rod, and the second end cap is sleeved on the support rod.

[0010] In this design, the sleeve is fixedly connected to the frame, and the filter element is rotatably connected to the sleeve after being fitted onto it. Under the action of the driving device, the filter element rotates around its own axis while the sleeve remains fixed. To achieve the effect of the filter element rotating while the sleeve remains stationary, the end cap can be rotatably connected to the filter element while being relatively fixed to the sleeve. In this case, the filter element can be rotated by moving it. In this design, the end cap can be located on either the support rod or the sleeve. Alternatively, the support rod and the sleeve can rotate relative to each other, with at least one end cap fixed to the support rod and the filter element. Rotating the support rod causes the filter element to rotate around its own axis. In this case, both end caps can be located on the support rod and fixedly connected to both the support rod and the filter element, or one end cap can be located on the support rod and fixed, while the other end cap is fitted onto the sleeve and rotatably connected to either the filter element or the support rod. For the filter element to be fitted onto the sleeve, the support rod is detachably connected to the frame, and the end caps can also be detached from the filter element, the sleeve, and the support rod. The end cap can achieve a rotatable connection between the filter element or sleeve and support rod through a sealed bearing, while preventing water from entering the filter element from the end face.

[0011] Furthermore, the support rod is rotatably connected to the sleeve, and both ends of the support rod are rotatably connected to the frame. The support rod can rotate around its own axis. The end cap includes a first end cap and a second end cap. The first end cap is sleeved on one end of the sleeve and is fixedly connected to the sleeve. The first end cap is located near the end of the sleeve that is fixedly connected to the filter element bracket. The second end cap is detachably connected to the support rod and the filter element. The rotatable connection between the first end cap and the filter element allows the filter element to rotate around its own axis.

[0012] In this design, the first end cap is fitted onto the sleeve and fixedly connected to it. When installing the filter element, the filter element can be inserted from the end closest to the second end cap, aligning with the first end cap. Then, the second end cap is inserted, aligning with the filter element and fixedly connected to the support rod. The support rod and sleeve can be removed from the frame to align with the filter element, or the end of the support rod closest to the second end cap can be detachably connected to the frame. The frame is equipped with a movable window through which the filter element passes.

[0013] Furthermore, the driving device includes a pneumatic motor mounted on the frame, the pneumatic motor being electrically connected to the control device, and the output shaft of the pneumatic motor being drively connected to the support rod so that the support rod can rotate around its own axis.

[0014] The control device can control the start, stop, and speed of the pneumatic motor. In this solution, the pneumatic motor drives the support rod to rotate, thereby causing the filter element to rotate. If the support rod can be removed from the frame, the output shaft of the pneumatic motor can also be detached from the support rod. If only one end of the support rod near the second end cover is detachably connected to the frame, the pneumatic motor can be located on the side of the frame near the first end cover.

[0015] Furthermore, the filter element support includes a crossbar supported at both ends on the frame and end caps at both ends of the filter element. The axes of the crossbar and the end caps are on the same straight line. The end caps include a third end cap and a fourth end cap. The third end cap is detachably connected to the filter element and rotatably connected to the crossbar. The fourth end cap is rotatably connected to the filter element or rotatably connected to the crossbar, so that the filter element can rotate around its own axis.

[0016] In this solution, the endoscope and test strip fixing structure are directly mounted on the crossbar. The crossbar replaces the support rod and sleeve structure in the above solution. In this solution, the driving device can only drive the filter element to rotate, but can drive the filter element to rotate by driving the support rod.

[0017] Furthermore, the drive device includes a rotary motor mounted on the frame and a first roller mounted on the frame and coaxial with the crossbar. The rotary motor is electrically connected to the control device. An anti-slip rubber layer is provided on the outer peripheral sidewall of the first roller. The maximum outer diameter of the end cap is larger than the outer diameter of the filter element. The outer peripheral sidewall of the first roller contacts the outer peripheral sidewall of the end cap. The pneumatic motor and the rotary motor can be interchanged without affecting the implementation of the solution; however, since the filter element is for filtering aviation fuel, using a pneumatic motor offers higher safety.

[0018] This solution is used when the filter element is rotated around its own axis by actuation. A rotary motor drives the first roller to rotate, and the outer wall of the first roller contacts the outer wall of the end cap, thereby using friction to drive the filter element to rotate. To avoid affecting the water spray test of the filter element and damaging its surface, the outer diameter of the end cap is made larger than that of the filter element, so that the outer surface of the roller and the outer surface of the filter element are separated by a certain distance.

[0019] Furthermore, the endoscope includes at least one camera, which is electrically connected to the control device and is mounted on the sleeve; or the endoscope further includes an endoscope frame, on which the camera is mounted.

[0020] Multiple cameras can be installed on the outer peripheral sidewall of the sleeve, such as evenly arranging several cameras along the axis of the sleeve, to allow for complete observation of the inner peripheral sidewall of the filter element. Alternatively, an endoscope can be installed on the sleeve, and the cameras can be mounted on the endoscope.

[0021] Furthermore, the number of cameras is one, and the endoscope device also includes an endoscope frame mounted on the sleeve. The camera is mounted on the endoscope frame. The endoscope frame includes a lead screw mechanism and first fixing members at both ends of the lead screw mechanism for fixing the lead screw mechanism. The fixing members are fixedly connected to the sleeve. The lead screw mechanism includes a screw with an axis parallel to the axis of the sleeve, a nut sleeved on the screw, and a lead screw motor mounted on the frame. The lead screw motor is electrically connected to the control device. The nut is slidably connected to the sleeve. The output shaft of the lead screw motor is drivenly connected to the screw to drive the screw to rotate around its own axis. At least one end cap has a through hole for the screw to pass through. The sensor is mounted on the nut. After the filter element is sleeved on the sleeve, the sensing surface of the sensor faces the inner peripheral sidewall of the filter element.

[0022] In this design, only one camera is used, and a lead screw structure is provided to allow the camera to move along the axis of the sleeve, thus enabling complete observation of the inner circumferential sidewall of the filter element. The outer circumferential sidewall of the sleeve may have a groove in which the nut slides, or the sleeve may have a slide rail for the nut to slide on, with the axis of the slide rail parallel to the axis of the sleeve. The lead screw motor may be located on the side of the frame near the first end cover. If the support rod is detachable from the frame, the screw and the output shaft of the lead screw motor can also be detached. If only the end of the support rod near the second end cover is detachably connected to the frame, the screw and the output shaft of the lead screw motor can be fixedly connected.

[0023] Furthermore, the camera is an infrared camera or a reflective imager, and the control device includes a display screen.

[0024] Furthermore, the test strip fixing device includes a second roller with an axis parallel to the axis of the support rod and a second fixing member located at both ends of the second roller on the sleeve. The second fixing member is rotatably connected to the second roller, and the second roller can rotate relative to the second fixing member around the axis of the second roller. After the filter element is sleeved on the sleeve, the outer peripheral sidewall of the second roller contacts the inner peripheral sidewall of the filter element.

[0025] The outer peripheral wall of the second roller is covered with water-sensitive or color-changing test paper. Then, the outer peripheral wall of the second roller after being covered with test paper comes into contact with the inner peripheral wall of the filter element. As the filter element rotates, it drives the second roller to rotate, so that all positions on the inner wall of the filter element come into contact with the test paper to detect whether the filter element has water leakage.

[0026] Furthermore, the second fixing member includes a hollow first fixing part and a second fixing part, and a spring. The first fixing part is sleeved on the second fixing part and the inner side wall of the first fixing part is slidably connected to the outer side wall of the second fixing part. The spring is disposed inside the hollow first fixing part and the second fixing part, and the two ends of the spring abut against the first fixing part and the second fixing part, respectively.

[0027] When the filter element is inserted into the sleeve, the compressed spring brings the second roller closer to the sleeve, making it easier to insert the filter element. Then the spring is released, and under the force of the spring, the second roller abuts against the inner wall of the filter element, allowing the test paper on the outer wall of the second roller to fit more tightly against the inner wall of the filter element.

[0028] Furthermore, the outer peripheral sidewall of the second roller is also provided with an anti-slip rubber layer.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] (1) The calibration device provided by the present invention can not only perform water spray test, but also test whether there is water permeation inside the filter element during the water spray test, and can also check the contamination inside the filter element, satisfying the testing of various performances during the periodic inspection of the filter element. The operation is simple and convenient.

[0031] (2) During the process of using the drive device to make the filter element rotate around its own axis, the sleeve is fixedly connected to the frame. The camera and test paper fixing structure set on the sleeve can completely detect all positions inside the filter element.

[0032] (3) The filter element fixing structure tests whether water penetrates the filter element sidewall by wrapping water-sensitive or color-changing test paper on the outer wall of the roller and rolling it on the inner wall of the filter element. The second fixing member is also made retractable by spring, which makes it easy for the filter element to be fitted into the sleeve and allows the roller to press against the inner wall of the filter element, making the test paper and the inner wall of the filter element more tightly bonded. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0034] Figure 2 This is a schematic diagram of the structure of the present invention after the filter element is placed;

[0035] Figure 3 This is a schematic diagram of the test paper fixing structure of the present invention;

[0036] Figure 4 This is a schematic diagram of the overall structure of Embodiment 2 of the present invention;

[0037] Figure 5 This is a schematic diagram of the overall structure of Embodiment 3 of the present invention.

[0038] The markings in the diagram are explained below:

[0039] 1-Frame, 11-Support, 12-Waste liquid tank, 13-Wheel caster, 14-Push handle, 2-Filter element bracket, 21-Support rod, 22-Sleeve, 23-End cap, 231-First end cap, 232-Second end cap, 233-Third end cap, 234-Fourth end cap, 24-Crossbar, 3-Endoscope device, 32-Screw mechanism, 321-Screw, 322-Nut, 323-Screw motor, 33-First fixing part, 4-Water spraying device, 41-Sprayer head, 42-Water pipe, 5-Test paper fixing structure, 51-Second roller, 52-Second fixing part, 521-First fixing part, 522-Second fixing part, 523-Spring, 6-Drive device, 61-Pneumatic motor, 62-Rotary motor, 63-First roller, 7-Filter element. Detailed Implementation

[0040] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0041] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0042] Example 1

[0043] like Figures 1 to 3 As shown, a multi-functional filter cartridge calibration device includes a frame 1, a filter cartridge 7 support 2 mounted on the frame 1 for placing the filter cartridge 7, an endoscope 3 mounted on the filter cartridge 7 support 2 for inspecting the interior of the filter cartridge 7, a water spraying device 4 mounted on the frame 1 for spraying water onto the filter cartridge 7 fixed on the filter cartridge 7 support 2, a test paper fixing structure 5 for fixing the water test paper, and a drive device 6 mounted on the frame 1 for driving the filter cartridge 7 to rotate around its own circumference on the filter cartridge 7 support 2.

[0044] The multifunctional filter cartridge calibration device provided by this invention, in addition to having a water spray test function, also allows for the fixation of water-measuring colorimetric test paper on the test paper fixing structure 5 during the water spray test. In this embodiment, cobalt chloride test paper can be used, which changes from blue to purple upon contact with water. Simultaneously, the degree of contamination inside the filter cartridge 7 can be directly observed using the endoscope 3. The degree of contamination inside the filter cartridge 7 can be observed independently, or it can be observed simultaneously during the water spray test while the driving device 6 drives the filter cartridge 7 to rotate around its own axis.

[0045] The filter element 7 support 2 includes a support rod 21 supported on the frame 1 at both ends, a sleeve 22 sleeved on the support rod 21, and end caps 23 located at both ends of the filter element 7. The end caps 23 include a first end cap 231 and a second end cap 232. The axes of the support rod 21, sleeve 22, first end cap 231 and second end cap 232 are all located on the same straight line. One end of the sleeve 22 is fixedly connected to the frame 1. The first end cap 231 is sleeved on one end of the sleeve 22 or on the support rod 21, and the second end cap 232 is sleeved on the support rod 21.

[0046] In this design, sleeve 22 is fixedly connected to frame 1 and remains stationary. Filter element 7 is fitted onto sleeve 22 and rotatably connected to it. Under the action of drive device 6, filter element 7 rotates around its own axis while sleeve 22 remains stationary. To accommodate filter element 7, support rod 21 is detachably connected to frame 1, and end cap 23 is also detachable from filter element 7, sleeve 22, and support rod 21. End cap 23 can achieve rotatable connection between filter element 7 or sleeve 22 and support rod 21 via sealed bearings, while preventing water from entering the interior of filter element 7 from its end face.

[0047] The support rod 21 is rotatably connected to the sleeve 22, and both ends of the support rod 21 are rotatably connected to the frame 1. The support rod 21 can rotate around its own axis. The end cover 23 includes a first end cover 231 and a second end cover 232. The first end cover 231 is sleeved on one end of the sleeve 22 and is fixedly connected to the sleeve 22. The first end cover 231 is located near the end of the sleeve 22 that is fixedly connected to the filter element 7 bracket 2. The second end cover 232 is detachably connected to the support rod 21 and the filter element 7. The first end cover 231 is rotatably connected to the filter element 7 so that the filter element 7 can rotate around its own axis.

[0048] In this design, the first end cap 231 is fitted onto the sleeve 22 and fixedly connected to it. When installing the filter element 7, the filter element 7 can be inserted from the end closest to the second end cap 232, so that the filter element 7 aligns with the first end cap 231. Then, the second end cap 232 is inserted, so that the second end cap 232 aligns with the filter element 7 and is fixedly connected to the support rod 21. The support rod 21 and the sleeve 22 can be removed from the frame 1 to align with the filter element 7, or the end of the support rod 21 closest to the second end cap 232 can be detachably connected to the frame 1. The frame 1 is provided with an movable window through which the filter element 7 passes.

[0049] The drive unit 6 includes a pneumatic motor 61 mounted on the frame 1. The pneumatic motor 61 is electrically connected to the control device. The output shaft of the pneumatic motor 61 is connected to the support rod 21 so that the support rod 21 can rotate around its own axis.

[0050] The control device can control the start, stop, and speed of the pneumatic motor 61. In this solution, the pneumatic motor 61 drives the support rod 21 to rotate, thereby driving the filter element 7 to rotate. If the support rod 21 can be removed from the frame 1, the output shaft of the pneumatic motor 61 can also be detached from the support rod 21. If only one end of the support rod 21 near the second end cover 232 is detachably connected to the frame 1, the pneumatic motor 61 can be located on the side of the frame 1 near the first end cover 231.

[0051] The endoscope 3 includes at least one camera, which is electrically connected to the control device and is mounted on the sleeve 22; or the endoscope 3 also includes an endoscope frame, on which the camera is mounted.

[0052] Multiple cameras can be installed on the outer peripheral sidewall of the sleeve 22, such as evenly arranging several cameras along the axis of the sleeve 22, so as to completely observe the inner peripheral sidewall of the filter element 7. Alternatively, an endoscope can be installed on the sleeve 22, and the cameras can be mounted on the endoscope.

[0053] The camera is an infrared camera or a reflective imager, and the control device includes a display screen.

[0054] The test strip fixing device includes a second roller 51 whose axis is parallel to the axis of the support rod 21, and second fixing members 52 located at both ends of the second roller 51 on the sleeve 22. The second fixing members 52 are rotatably connected to the second roller 51, and the second roller 51 can rotate relative to the second fixing members 52 around the axis of the second roller 51. After the filter element 7 is sleeved on the sleeve 22, the outer peripheral sidewall of the second roller 51 contacts the inner peripheral sidewall of the filter element 7.

[0055] The outer peripheral wall of the second roller 51 is covered with water-sensitive or color-changing test paper. Then, the outer peripheral wall of the second roller 51 after being covered with test paper comes into contact with the inner peripheral wall of the filter element 7. As the filter element 7 rotates, it drives the second roller 51 to rotate, so that all positions on the inner wall of the filter element 7 come into contact with the test paper, thereby detecting whether the filter element 7 has water leakage.

[0056] The second fixing member 52 includes a hollow first fixing part 521 and a hollow second fixing part 522, and a spring 523. The first fixing part is sleeved on the second fixing part 522 and the inner side wall of the first fixing part 521 is slidably connected to the outer side wall of the second fixing part 522. The spring 523 is disposed inside the hollow first fixing part 521 and the second fixing part 522 and the two ends of the spring 523 respectively abut against the first fixing part 521 and the second fixing part 522.

[0057] When the filter element 7 is inserted into the sleeve 22, the compression spring 523 brings the second roller 51 closer to the sleeve 22, making it easier to insert the filter element 7. Then the spring 523 is released, and under the force of the spring 523, the second roller 51 abuts against the inner wall of the filter element 7, so that the test paper on the outer wall of the second roller 51 can fit more tightly against the inner wall of the filter element 7.

[0058] The outer peripheral sidewall of the second roller 51 is also provided with an anti-slip rubber layer.

[0059] The water spraying device 4 includes a nozzle 41 mounted on the frame 1 above the filter element 7, a switch for controlling the nozzle 41, and a water pipe 42 connected to the nozzle 41. The water pipe 42 can be used after being connected to a tap.

[0060] The frame 1 includes supports 11 for supporting both sides of the filter element 7 bracket 2, and a waste liquid tank 12 located below the filter element 7 bracket 2. The supports 11 are fixedly connected to the waste liquid tank 12, and the bottom of the waste liquid tank 12 is provided with a drain port.

[0061] The bottom of the frame 1 is equipped with casters 13, and one side of the frame 1 is equipped with a push handle 14 for easy pushing of the frame 1.

[0062] Example 2

[0063] This embodiment is similar to Embodiment 1, except that, as Figure 4As shown, in this embodiment, there is one camera. The endoscope device 3 also includes an endoscope frame mounted on the sleeve 22. The camera is mounted on the endoscope frame. The endoscope frame includes a lead screw mechanism 32 and first fixing members 33 at both ends of the lead screw mechanism 32 for fixing the lead screw mechanism 32. The fixing members are fixedly connected to the sleeve 22. The lead screw mechanism 32 includes a screw 321 with its axis parallel to the axis of the sleeve 22, a nut 322 sleeved on the screw 321, and a lead screw motor 323 mounted on the frame 1. The lead screw motor 323 is electrically connected to the control device. The nut 322 is slidably connected to the sleeve 22. The output shaft of the lead screw motor is drively connected to the screw 321 to drive the screw 321 to rotate around its own axis. At least one end cap 23 is provided with a through hole for the screw 321 to pass through. The sensor is mounted on the nut 322. After the filter element 7 is sleeved on the sleeve 22, the sensing surface of the sensor faces the inner peripheral sidewall of the filter element 7.

[0064] In this design, only one camera is used, and a lead screw structure is provided to allow the camera to move along the axis of the sleeve 22, thus enabling complete observation of the inner circumferential sidewall of the filter element 7. A groove may be provided on the outer circumferential sidewall of the sleeve 22, in which the nut 322 slides; alternatively, a slide rail may be provided on the sleeve 22 for the nut 322 to slide on, with the axis of the slide rail parallel to the axis of the sleeve 22. The lead screw motor 323 may be located on the side of the frame 1 near the first end cover 231. If the support rod 21 can be detached from the frame 1, the screw 321 and the output shaft of the lead screw motor 323 can also be detached. If only the end of the support rod 21 near the second end cover 232 is detachably connected to the frame 1, the screw 321 and the output shaft of the lead screw motor 323 can be fixedly connected.

[0065] Example 3

[0066] This embodiment is similar to embodiment 1 or 2, except that, in this embodiment, as... Figure 5 As shown, the filter element 7 support 2 includes a crossbar 24 supported on the frame 1 at both ends, and end caps 23 located at both ends of the filter element 7. The axes of the crossbar 24 and the end caps 23 are located on the same straight line. The end caps 23 include a third end cap 233 and a fourth end cap 234. The third end cap 233 is detachably connected to the filter element 7 and rotatably connected to the crossbar 24. The fourth end cap 234 is rotatably connected to the filter element 7 or rotatably connected to the crossbar 24, so that the filter element 7 can rotate around its own axis.

[0067] In this design, the endoscope 3 and the test strip fixing structure 5 are directly mounted on the crossbar 24. The crossbar 24 replaces the support rod 21 and sleeve 22 structure in the above design. In this design, the drive device 6 can only drive the filter element 7 to rotate, but can drive the filter element 7 to rotate by driving the support rod 21.

[0068] The drive device 6 includes a rotary motor 62 mounted on the frame 1 and a first roller 63 mounted on the frame 1 and coaxial with the crossbar 24. The rotary motor 62 is electrically connected to the control device. The outer peripheral sidewall of the first roller 63 is provided with an anti-slip rubber layer. The maximum outer diameter of the end cap 23 is greater than the outer diameter of the filter element 7. The outer peripheral sidewall of the first roller 63 is in contact with the outer peripheral sidewall of the end cap 23.

[0069] This design is used when the filter element 7 is rotated around its own axis by actuating it. A rotary motor 62 drives the first roller 63 to rotate, and the outer wall of the first roller 63 contacts the outer wall of the end cap 23, thereby using friction to drive the filter element 7 to rotate. To avoid affecting the water spray test of the filter element 7 and damaging its surface, the outer diameter of the end cap 23 is made larger than that of the filter element 7, thus allowing a certain distance to be maintained between the outer surface of the roller and the outer surface of the filter element 7.

[0070] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A multi-functional filter cartridge testing device, characterized in that, The device includes a frame (1), a filter element support (2) mounted on the frame (1) for placing the filter element, an endoscope (3) mounted on the filter element support (2) for inspecting the inside of the filter element, a water spraying device (4) mounted on the frame (1) for spraying water onto the filter element fixed on the filter element support (2), a test paper fixing structure (5) for fixing the water test paper, a drive device (6) mounted on the frame (1) for driving the filter element to rotate around its own circumference on the filter element support (2), and a control device electrically connected to the endoscope (3), the water spraying device (4) and the control device. The filter element support (2) includes a support rod (21) supported at both ends on the frame (1), a sleeve (22) sleeved on the support rod (21), and end caps (23) located at both ends of the filter element. The axes of the support rod (21), sleeve (22), and end cap (23) are all on the same straight line. One end of the sleeve (22) is fixedly connected to the frame (1), and the end cap (23) is provided on the support rod (21) or sleeve (22). The test paper fixing structure (5) The filter element includes a second roller (51) whose axis is parallel to the axis of the support rod (21) and a second fixing member (52) located at both ends of the second roller (51) on the sleeve (22). The second fixing member (52) is rotatably connected to the second roller (51). The second roller (51) can rotate relative to the second fixing member (52) around the axis of the second roller (51). After the filter element is sleeved on the sleeve (22), the outer peripheral sidewall of the second roller (51) contacts the inner peripheral sidewall of the filter element. Alternatively, the filter element support (2) includes a crossbar (24) supported at both ends on the frame (1) and end caps (23) at both ends of the filter element. The axes of the crossbar (24) and the end caps (23) are on the same straight line. The end caps (23) include a third end cap (233) and a fourth end cap (234). The third end cap (233) is detachably connected to the filter element and rotatably connected to the crossbar (24). The fourth end cap (234) is rotatably connected to the filter element or rotatably connected to the crossbar (24), so that the filter element can rotate around its own axis. The test paper fixing structure (5) is directly provided on the crossbar (24). The crossbar (24) replaces the support rod (21) and the sleeve (22) structure in the above scheme.

2. The multifunctional filter cartridge testing device according to claim 1, characterized in that, The support rod (21) is rotatably connected to the sleeve (22), and both ends of the support rod (21) are rotatably connected to the frame (1). The support rod (21) can rotate around its own axis. The end cap (23) includes a first end cap (231) and a second end cap (232). The first end cap (231) is sleeved on one end of the sleeve (22), and the first end cap (231) is fixedly connected to the sleeve (22). The first end cap (231) is located near the end of the sleeve (22) that is fixedly connected to the filter element bracket (2). The second end cap (232) is detachably connected to the support rod (21), and the second end cap (232) is detachably connected to the filter element. The first end cap (231) is rotatably connected to the filter element so that the filter element can rotate around its own axis.

3. The multifunctional filter cartridge testing device according to claim 2, characterized in that, The drive device (6) includes a pneumatic motor (61) mounted on the frame (1). The pneumatic motor (61) is electrically connected to the control device. The output shaft of the pneumatic motor (61) is connected to the support rod (21) so that the support rod (21) can rotate around its own axis.

4. The multifunctional filter cartridge testing device according to claim 1, characterized in that, The drive device (6) includes a rotary motor (62) mounted on the frame (1) and a first roller (63) mounted on the frame (1) and coaxial with the crossbar (24). The rotary motor (62) is electrically connected to the control device. The outer peripheral sidewall of the first roller (63) is provided with an anti-slip rubber layer. The maximum outer diameter of the end cap (23) is greater than the outer diameter of the filter element. The outer peripheral sidewall of the first roller (63) is in contact with the outer peripheral sidewall of the end cap (23).

5. The multifunctional filter cartridge testing device according to claim 2, characterized in that, The endoscope (3) includes at least one camera, which is electrically connected to the control device and is mounted on the sleeve (22); Alternatively, the endoscope (3) may also include an endoscope frame, on which the camera is mounted.

6. The multifunctional filter cartridge testing device according to claim 5, characterized in that, The number of cameras is one. The endoscope device (3) also includes an endoscope frame disposed on the sleeve (22). The camera is disposed on the endoscope frame. The endoscope frame includes a lead screw mechanism (32) and first fixing members (33) disposed at both ends of the lead screw mechanism (32) for fixing the lead screw mechanism (32). The fixing members are fixedly connected to the sleeve (22). The lead screw mechanism (32) includes a screw (321) with its axis parallel to the axis of the sleeve (22), a nut (322) sleeved on the screw (321), and a mounting bracket disposed at both ends of the sleeve (22). The screw motor (323) on the frame (1) is electrically connected to the control device. The nut (322) is slidably connected to the sleeve (22). The output shaft of the screw motor (323) is connected to the screw (321) to drive the screw (321) to rotate around its own axis. At least one end cap (23) is provided with a through hole for the screw (321) to pass through. The camera is mounted on the nut (322). After the filter element is sleeved on the sleeve (22), the sensing surface of the camera faces the inner peripheral sidewall of the filter element.

7. The multifunctional filter cartridge testing device according to claim 5 or 6, characterized in that, The camera is an infrared camera or a reflective imager, and the control device includes a display screen.

8. The multifunctional filter cartridge testing device according to claim 1, characterized in that, The second fixing member (52) includes a hollow first fixing part (521) and a second fixing part (522), and a spring (523). The first fixing part is sleeved on the second fixing part (522), and the inner side wall of the first fixing part (521) is slidably connected to the outer side wall of the second fixing part (522). The spring (523) is disposed inside the hollow parts of the first fixing part (521) and the second fixing part (522), and the two ends of the spring (523) abut against the first fixing part (521) and the second fixing part (522) respectively.

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