Fuel filter sealing performance detection equipment

Abstract

The invention belongs to the technical field of filter assembly detection, and particularly relates to fuel filter sealing performance detection equipment, which comprises a test water tank, a test frame assembly, an air pressure test assembly and a driving assembly, and is characterized in that the test frame assembly comprises a test frame body, a lifting material frame, a feeding frame, a discharging frame and a cleaning mechanism; the air pressure testing assembly comprises a lifting base, a sliding block and a connecting part. The driving assembly comprises a pressing mechanism and a lifting mechanism. Therefore, the device integrates an automatic feeding and discharging system, can seamlessly connect the loading and unloading processes of the filter, does not need manual intervention, greatly improves the efficiency and productivity of detection work, has the core functions of automatically and accurately connecting an oil inlet and an oil outlet of the filter and immediately executing sealing performance detection, does not need manual operation in the whole process, and is convenient to operate. Therefore, the labor intensity is obviously reduced, the detection efficiency is greatly improved, and the accuracy and reliability of the test result are greatly improved by reducing the intervention of human factors in the detection process.

Description

Technical Field

[0001] The invention relates to the technical field of filter assembly detection, and in particular to a fuel filter sealing performance detection device. Background Art

[0002] In the automotive industry, the fuel filter is an important part of the engine fuel system, and its sealing performance is directly related to the normal operation of the fuel system and the stability of the engine.

[0003] The traditional method for testing the sealing performance of fuel filters is usually to connect the filter assembly to the pressure testing terminal, and then place the entire device into the testing liquid for testing. However, the fuel filter's oil inlet and oil outlet are respectively set at both ends. This design feature requires manual connection of the pressure testing terminal to the oil inlet and oil outlet during the testing process.

[0004] This operation mode is not only time-consuming and labor-intensive, increasing the labor intensity of inspectors, but also greatly reduces the inspection efficiency. Especially in the context of mass production, its disadvantages are more prominent. Since each inspection requires two manual connections, it not only increases the operation steps, but also easily leads to human errors, affecting the accuracy and reliability of the inspection results. Summary of the invention

[0005] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0006] To this end, the purpose of the present invention is to propose a fuel filter sealing performance testing device. The device integrates an automatic loading and unloading system, which can seamlessly connect the loading and unloading processes of the filter without manual intervention, greatly improving the efficiency and capacity of the testing work. Its core function is to automatically and accurately connect the oil inlet and outlet of the filter, and immediately perform sealing performance testing. No manual operation is required throughout the process, thereby significantly reducing labor intensity and greatly improving testing efficiency. By reducing the intervention of human factors in the testing process, the automated design of the equipment not only speeds up the testing speed, but also greatly improves the accuracy and reliability of the test results.

[0007] To achieve the above-mentioned purpose, the present invention proposes a fuel filter sealing performance testing device, including a test water tank, a test frame assembly, an air pressure test assembly and a drive assembly, wherein: the test frame assembly includes a test frame body, a lifting material frame, a loading frame, a loading frame and a cleaning mechanism, the test frame body is fixedly connected to the inner wall of the test water tank, the lifting material frame is vertically slidably connected to the inner wall of the test frame body, and a first spring is fixedly connected to the bottom wall of the test frame body, the loading frame and the loading frame are respectively fixedly connected to the outer surface of the test frame body and correspond to the position of the lifting material frame, the cleaning mechanism is fixedly connected to the outer surface of the test water tank, and one end of the cleaning mechanism penetrates into the test frame The pneumatic test assembly is inside the test frame and in contact with the lifting material frame. The pneumatic test assembly includes a lifting base, a sliding block and a connecting part. The lifting base is symmetrically and vertically slidably connected to the inner wall of the test frame body, and a second spring is fixedly connected to the bottom wall of the test frame body. The sliding block is horizontally slidably connected to the inner wall of the lifting base, and a third spring is fixedly connected to the surface of the lifting base. The connecting part is fixedly connected to the surface of the sliding block and is located on the outside of the lifting material frame. The driving assembly includes a pressing mechanism and a lifting mechanism. The pressing mechanism is arranged on the inner wall of the test frame body and is respectively in contact with the lifting material frame and the sliding block. The lifting mechanism is arranged on the pressing mechanism.

[0008] In addition, the fuel filter sealing performance testing device proposed in the application may also have the following additional technical features: Specifically, the loading rack includes two groups of L-shaped racks arranged up and down, and the unloading rack includes two groups of Z-shaped racks arranged up and down, the gap between the two groups of L-shaped racks forms an L-shaped loading channel, and the gap between the two groups of Z-shaped racks forms a Z-shaped unloading channel. The internal space lengths of the two groups of L-shaped racks and the two groups of Z-shaped racks are consistent with the length of the main part of the filter assembly excluding the end head, the internal space height and internal space depth of the L-shaped loading channel and the Z-shaped unloading channel are respectively consistent with the outer diameter and length of the end head of the filter assembly, the inner top wall and the inner bottom wall at the end of the Z-shaped unloading channel are firmly bonded with conical elastic buffer strips by high-strength adhesive, and the conical surfaces of the two groups of conical elastic buffer strips are opposite to each other.

[0009] Specifically, a loading port and a unloading port are respectively provided on the surface of the test frame at positions corresponding to the positions of the loading rack and the unloading rack, one end of the loading rack close to the loading port and one end of the unloading rack close to the unloading port are both obliquely arranged, the height of the unloading port is higher than the height of the loading port, the inner diameter of the loading port and the inner diameter of the unloading port are consistent with the length of the main part of the filter assembly excluding the end head, and oblique inner guide grooves are symmetrically and obliquely provided at positions corresponding to the position of the L-shaped loading channel and at positions corresponding to the position of the Z-shaped unloading channel on the inner wall of the loading port. The oblique inner guide grooves are respectively connected with the inside of the L-shaped loading channel and the inside of the Z-shaped unloading channel, and the connection between the oblique inner guide groove and the L-shaped loading channel and the Z-shaped unloading channel is designed with the same inclination angle.

[0010] Specifically, the lifting material frame includes an upper frame and a lower frame, the upper frame and the lower frame are respectively vertically slidably connected to the inner wall of the test frame, and are arranged up and down, the upper frame and the lower frame are separated by a set gap and connected by a fixing rod, the gap between the upper frame and the lower frame forms an inclined guide groove, the internal space width of the test frame is consistent with the width of the upper frame, the width of the lower frame and the outer diameter of the filter assembly, and the internal space length of the upper frame and the internal space length of the lower frame are the same as the filter assembly excluding the end head The length dimension of the main body other than the upper frame is consistent, the internal space height and the internal space depth of the inclined guide groove are respectively consistent with the outer diameter and the length dimension of the end of the filter assembly, the inclined guide groove respectively corresponds to the position of the inclined inner guide groove of the inner wall of the upper material port and the inclined inner guide groove of the inner wall of the lower material port, and is connected, the connection between the inclined guide groove and the two groups of the inclined inner guide grooves is designed with the same inclination angle, the top of the upper frame is fixedly connected with a connecting handle, and the first spring is fixedly connected between the bottom of the lower frame and the inner bottom wall of the test frame.

[0011] The cam is provided with a toothed structure, and the toothed structure ... The cleaning slider is symmetrically slidably connected to the end surface of the load-bearing and limiting slider away from the rectangular frame, and is located inside the inclined guide groove, the two groups of cleaning sliders are respectively slidably connected to the inner wall of the inclined guide groove, the driving gear is rotatably connected to the inner wall of the load-bearing and limiting slider, one end of the two groups of cleaning sliders respectively penetrates into the inclined guide groove and meshes with the driving gear. The driving shaft is fixedly connected to the inner wall of the rectangular frame, the first guide cylinder is rotatably connected to the surface of the load-bearing and limiting slider and corresponds to the fixed position of the driving shaft, one end of the first guide cylinder is connected to the driving gear, the other end of the first guide cylinder penetrates into the interior of the rectangular frame and is sleeved on the outside of the driving shaft, and a spiral guide groove and a first convex shaft are respectively provided at the surface of the first guide cylinder corresponding to the position of the surface of one end of the driving shaft, one end of the first convex shaft is located inside the spiral guide groove and is slidably connected to the inner wall of the spiral guide groove.

[0012] Specifically, the connecting portion includes an outer conical connecting head and an inner conical connecting head, the outer conical connecting head and the inner conical connecting head are respectively fixedly connected to the surfaces of two sets of sliding blocks, the outer conical connecting head and the inner conical connecting head respectively correspond to the oil inlet end and the oil outlet end of the fuel filter assembly, and the outer dimensions are adapted, and the surface of the outer conical connecting head and the inner wall of the inner conical connecting head are respectively provided with O-rings.

[0013] Specifically, the pressing mechanism includes a horizontal bracket, an arc-shaped pressure seat, a side bracket, a limiting portion, a tapered portion and a hydraulic telescopic rod, the hydraulic telescopic rod is fixedly connected to the top of the test frame, the output end of the hydraulic telescopic rod passes through the interior of the test frame and is fixedly connected to the horizontal bracket, the arc-shaped pressure seat is symmetrically fixedly connected to the surface of the horizontal bracket and corresponds to the position of the connecting handle, an arc-shaped groove is provided at the bottom of the arc-shaped pressure seat and contacts the surface of the connecting handle, the side bracket is symmetrically fixedly connected to the bottom of the horizontal bracket and is located on the outside of the arc-shaped pressure seat, the limiting portion and the tapered portion are respectively arranged on the surface of the side bracket up and down and correspond to the position of the sliding block, a tapered groove is provided on the surface of the sliding block corresponding to the position of the tapered portion, the tapered portion is slidably connected to the inner wall of the tapered groove, and the shape of the tapered portion is adapted to the internal size of the tapered groove.

[0014] Specifically, the lifting mechanism includes an arc-shaped hook, a worm wheel, a worm, a synchronous rotating shaft, a second guide cylinder, a second convex shaft and a limiting guide groove, the inner wall of the arc groove is symmetrically provided with hook holes, the arc-shaped hook is slidably connected to the inner wall of the hook hole, the worm wheel is rotatably connected to the inner wall of the arc pressure seat and is fixedly connected to one end of the arc hook, the worm is rotatably connected to the inner wall of the arc pressure seat and meshes with the worm wheel, the synchronous rotating shaft is rotatably connected to the inner wall of the test frame, one end of the synchronous rotating shaft passes through the interior of the arc pressure seat and is connected to the worm, and one end of the synchronous rotating shaft The end passes through the top of the test frame and is fixedly connected with the second cam shaft, the second guide cylinder is fixedly connected to the top of the test frame and is sleeved on the outside of the synchronous rotating shaft, the surface of the second guide cylinder is provided with the limiting guide groove corresponding to the position of the second cam shaft, one end of the second cam shaft is located inside the limiting guide groove and is slidably connected to the inner wall of the limiting guide groove, the limiting guide groove includes an upper vertical section, a middle spiral section and a lower vertical section, wherein the upper vertical section, the middle spiral section and the lower vertical section are sequentially opened on the surface of the second guide cylinder from top to bottom and are connected.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The device integrates an automatic loading and unloading system, which can seamlessly connect the loading and unloading process of the filter without manual intervention, greatly improving the efficiency and capacity of the inspection work; 2. The core function of this device is to automatically and accurately connect the oil inlet and outlet of the filter and immediately perform sealing performance testing. No manual operation is required throughout the process, which significantly reduces labor intensity and greatly improves testing efficiency. 3. By reducing the involvement of human factors in the detection process, the automated design of the equipment not only speeds up the detection process, but also greatly improves the accuracy and reliability of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which: Figure 1 This is a schematic structural diagram of a fuel filter sealing performance testing device according to the present invention; Figure 2 It is a schematic structural diagram of an air pressure test assembly in a fuel filter sealing performance testing device of the present invention; Figure 3 It is a schematic diagram of the structure of a lifting material frame in a fuel filter sealing performance testing device of the present invention; Figure 4 The invention relates to a fuel filter sealing performance testing device. Figure 1 A is an enlarged structural diagram; Figure 5 The invention relates to a fuel filter sealing performance testing device. Figure 1 The enlarged structural diagram at B in FIG. Figure 6 It is a schematic diagram of the structure of a cleaning mechanism in a fuel filter sealing performance testing device of the present invention; Figure 7 It is a schematic diagram of the structure of the connection part in a fuel filter sealing performance testing device of the present invention; Figure 8 It is a schematic diagram of the structure of a pressing mechanism in a fuel filter sealing performance testing device of the present invention; Fig. 9 The present invention is a schematic diagram of the structure of a lifting mechanism in a fuel filter sealing performance testing device.

[0018] As shown in the figure: 1. Test water tank; 2. Test frame assembly; 3. Air pressure test assembly; 4. Drive assembly; 21. Test frame; 22. Lifting frame; 23. Loading frame; 24. Unloading frame; 25. Cleaning mechanism; 221. First spring; 31. Auxiliary guide frame; 32. Lifting base; 34. Sliding block; 35. Connecting part; 33. Second spring; 36. Third spring; 41. Pressing mechanism; 42. Lifting mechanism; 222, upper frame; 223, lower frame; 224, fixing rod; 225, inclined guide groove; 226, connecting handle; 211, feed opening; 212, oblique inner guide groove; 100, feed channel; 200, feed channel; 300, cone-shaped elastic buffer strip; 251, cylindrical mounting seat; 252, horizontal pressing rod; 253, fourth spring; 254, rectangular frame; 255, load-bearing limiting slide plate; 256, fifth spring; 257, first guide cylinder; 258, driving shaft; 259, spiral guide groove; 2510, first convex shaft; 2511, driving gear; 2512, cleaning slide block; 351, external conical connector; 352, internal conical connector; 411, horizontal bracket; 412, arc-shaped pressure seat; 4121, arc-shaped groove; 41211, hook hole; 413, side bracket; 414, limit part; 415, tapered part; 416, hydraulic telescopic rod; 37, tapered groove; 421, arc hook; 422, worm wheel; 423, worm; 424, synchronous shaft; 425, second guide cylinder; 426, second convex shaft; 427, limit guide groove; 4271, upper vertical segment; 4272, middle spiral segment; 4273, lower vertical segment; 10. Controller; 20. Power station. DETAILED DESCRIPTION

[0019] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limitations of the present invention. On the contrary, embodiments of the present invention include all changes, modifications and equivalents that fall within the spirit and connotation of the appended claims.

[0020] A fuel filter sealing performance testing device according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0021] like Figure 1-Figure 9As shown, a fuel filter sealing performance testing device according to an embodiment of the present invention comprises a test water tank 1, a test frame assembly 2, an air pressure test assembly 3 and a drive assembly 4, wherein: the test frame assembly 2 comprises a test frame body 21, a lifting material frame 22, a loading frame 23, a loading frame 24 and a cleaning mechanism 25, the test frame body 21 is fixedly connected to the inner wall of the test water tank 1, the lifting material frame 22 is vertically slidably connected to the inner wall of the test frame body 21, and a first spring 221 is fixedly connected to the inner bottom wall of the test frame body 21, the loading frame 23 and the loading frame 24 are respectively fixedly connected to the outer surface of the test frame body 21, and correspond to the position of the lifting material frame 22, the cleaning mechanism 25 is fixedly connected to the outer surface of the test water tank 1, and one end of the cleaning mechanism 25 penetrates into the test frame body 21, and in contact with the lifting material frame 22, the air pressure test component 3 includes a lifting base 32, a sliding block 34 and a connecting part 35, the lifting base 32 is symmetrically and vertically slidably connected to the inner wall of the test frame 21, and a second spring 33 is fixedly connected to the inner bottom wall of the test frame 21, the sliding block 34 is horizontally slidably connected to the inner wall of the lifting base 32, and a third spring 36 is fixedly connected to the surface of the lifting base 32, the connecting part 35 is fixedly connected to the surface of the sliding block 34, and is located on the outside of the lifting material frame 22, the driving component 4 includes a pressing mechanism 41 and a lifting mechanism 42, the pressing mechanism 41 is arranged on the inner wall of the test frame 21, and is respectively in contact with the lifting material frame 22 and the sliding block 34, and the lifting mechanism 42 is arranged on the pressing mechanism 41.

[0022] It should be noted that, in order to facilitate the observation of bubbles, the test water tank 1 is made of transparent glass. In order to further observe the bubbles, a bubble detection mechanism (not shown in the figure) is also provided on the inner wall of the test water tank 1. The bubble detection unit includes a camera and a bubble analysis unit. The camera is electrically connected to the bubble analysis unit. The camera takes pictures of the surface of the filter assembly under the liquid level of the test liquid, and the bubble analysis unit analyzes the pictures taken and judges the sealing performance based on the analysis results.

[0023] It should also be noted that, in order to facilitate unified control, a controller 10 is also provided on the surface of the test frame 21, and the controller 10 is seamlessly connected to the bubble detection mechanism and the pressing mechanism 41 through an efficient bus, so as to realize fast data transmission and accurate reception of control instructions.

[0024] It can be understood that, in order to facilitate the observation of the test water tank 1, a power station 20 is arranged at the bottom of the test water tank 1 to raise the height of the test water tank 1 and provide power for the bubble detection mechanism, the controller 10 and the downward pressure mechanism 41. The power station 20 includes a box body, a power supply device arranged inside the box body and a hydraulic station arranged inside the box body. The power supply device supplies power to the hydraulic station, the bubble detection mechanism and the controller 10, and the hydraulic station provides power for the downward pressure mechanism 41.

[0025] It can also be understood that, in order to facilitate the inflation of air into the filter assembly, one end of the connection portion 35 is connected to one end of the external air pipe, and for ease of control, a solenoid valve (not shown in the figure) is provided on the connection portion 35, and the solenoid valve is electrically connected to the controller 10.

[0026] It can also be understood that, in order to improve the stability of the lifting base 32 when it is lifted or lowered, an auxiliary guide frame 31 is provided between the lifting base 32 and the test frame 21 .

[0027] Specifically, when in use, the filter assemblies to be tested are placed on the loading rack 23 in sequence, and the bottom group of filter assemblies enters the interior of the lifting frame 22 through the loading port, and then the pressing mechanism 41 is driven to operate. The pressing mechanism 41 first drives the sliding block 34 to move inward along the inner wall of the lifting base 32, and stretches the third spring 36. The sliding block 34 moves inward and synchronously drives the connecting portion 35 to connect with the end of the filter assembly, which is convenient for subsequent pressure testing. As the pressing mechanism 41 continues to operate, it drives the lifting base 32 and the lifting frame 22 to descend synchronously, and synchronously compresses the first spring 221 and the second spring 33 during the descent. , when it drops to the set height, the sliding block 34 and the filter assembly are both below the liquid level of the test liquid inside the test water tank 1, and then the solenoid valve on the connecting portion 35 is opened to inflate the inside of the filter assembly for pressure testing. During this process, the surface of the filter assembly is observed through the test water tank 1 to see if there are bubbles, so as to judge the sealing performance. Of course, the sealing performance can also be judged based on the data detected by the bubble detection mechanism. After the pressure test is completed, the solenoid valve is closed, and then the pressing mechanism 41 is controlled to reset. As the pressing mechanism 41 resets, its extrusion force gradually decreases, and under the elastic force of the first spring 221 and the third spring 36, the lifting and lowering The base 32 and the lifting frame 22 also rise and reset accordingly. When the pressing mechanism 41 is separated from the lifting base 32 and the lifting frame 22, the sliding block 34 loses the squeezing force and automatically resets under the elastic force of the third spring 36. The sliding block 34 resets and synchronously drives the connecting portion 35 to reset and separates from the end of the filter assembly, so as to facilitate the next use. When the pressing mechanism 41 is reset to a preset height between the top of the lifting frame 22, the lifting mechanism 42 passively operates and is connected to the top of the lifting frame 22. As the pressing mechanism 41 continues to reset, the lifting mechanism 42 synchronously drives the lifting frame 22 to move upward. When the lifting frame 22 moves to When the discharge port 211 is in position, the tested filter assembly inside it automatically moves into the discharge rack 24 under the action of gravity to realize automatic discharge. After the pressing mechanism 41 is reset to the initial position, it will run again and drive the lifting frame 22 to descend to the loading port position to facilitate the automatic loading of the next group of filter assemblies to be tested. After all the filter assemblies are tested, the pressing mechanism 41 is controlled to drive the lifting frame 22 to move to the position of the cleaning mechanism 25, and then the cleaning liquid remaining on the lifting frame 22 is wiped off by the cleaning mechanism 25, and then the cleaning liquid remaining on the loading rack 23 and the discharge rack 24 can be manually wiped off.

[0028] In one embodiment of the present invention, Figure 1 and Figure 5As shown, the loading rack 23 includes two groups of L-shaped racks arranged up and down, and the unloading rack 24 includes two groups of Z-shaped racks arranged up and down, the gap between the two groups of L-shaped racks forms an L-shaped loading channel 100, and the gap between the two groups of Z-shaped racks forms a Z-shaped unloading channel 200. The internal space lengths of the two groups of L-shaped racks and the two groups of Z-shaped racks are consistent with the length of the main part of the filter assembly excluding the end head. The internal space height and internal space depth of the L-shaped loading channel 100 and the Z-shaped unloading channel 200 are respectively consistent with the outer diameter and length of the end head of the filter assembly. The inner top wall and the inner bottom wall at the end of the Z-shaped unloading channel 200 are firmly bonded with a conical elastic buffer strip 300 by a high-strength adhesive, and the conical surfaces of the two groups of conical elastic buffer strips 300 are opposite to each other.

[0029] Specifically, the structures of the loading rack 23 and the unloading rack 24 are further described. The loading rack 23 is composed of two L-shaped racks arranged in an upper and lower layer. This design allows the filter assembly to be placed from one side and then moved along the L-shaped path, which is convenient for control and positioning. The gap between the two groups of L-shaped racks forms an L-shaped loading channel 100. The internal space lengths of the two groups of L-shaped racks and the two groups of Z-shaped racks are consistent with the length of the main part of the filter assembly except the end head. The internal space height and internal space depth of the L-shaped loading channel 100 and the Z-shaped unloading channel 200 are respectively consistent with the filter assembly. The outer diameter and length of the end of the filter assembly are consistent. The length of the internal space and the size of the channel are designed to adapt to the shape and size of the filter assembly to ensure that the filter can pass smoothly and stably. The unloading rack 24 is composed of two layers of Z-shaped racks. This design allows the filter to smoothly descend along the Z-shaped path when leaving the production line, reducing impact and vibration. The gap between the two groups of Z-shaped racks forms a Z-shaped unloading channel 200. Similar to the loading channel 100, the size of this channel is also designed according to the shape and size of the end of the filter assembly. At the end of the channel 200, the inner top wall and the inner bottom wall are firmly bonded with conical elastic buffer strips 300. The function of these buffer strips is to provide buffering when the filter descends to the end, reduce its descending impact force, and reduce the risk of damage caused by direct impact into the material box. The conical surfaces of the two groups of conical elastic buffer strips 300 are opposite to each other. This face-to-face conical buffer strip design enables the filter to achieve effective deceleration and buffering effects by contacting with the gradually thickening conical elastic buffer strips 300 when passing through the end of the channel. The advantages of the above design are, first of all, Improve production efficiency. Both loading and unloading processes are automated and efficient, reducing manual intervention and waiting time. Then reduce the damage rate. Through precise size matching and buffer protection design, the damage rate of the filter during transportation is greatly reduced. Finally, enhance operational safety, reduce direct contact and manual operation of operators, and reduce the risk of work-related injuries. The design of the loading rack 23 and the unloading rack 24 fully considers the characteristics and transportation requirements of the filter assembly, and achieves efficient, safe and low-damage transportation effects through reasonable structural design and functional configuration.

[0030] In one embodiment of the present invention, Figure 1 and Figure 4As shown, a loading port and a unloading port 211 are respectively provided on the surface of the test frame 21 at positions corresponding to the positions of the loading rack 23 and the unloading rack 24. One end of the loading rack 23 close to the loading port and one end of the unloading rack 24 close to the unloading port 211 are both obliquely arranged. The height of the unloading port 211 is higher than the height of the loading port. The inner diameters of the loading port and the inner diameters of the unloading port 211 are consistent with the length of the main part of the filter assembly excluding the end head. An oblique inner guide groove 212 is symmetrically and obliquely provided at a position corresponding to the position of the L-shaped loading channel 100 and at a position corresponding to the position of the Z-shaped unloading channel 200 on the inner wall of the loading port. The oblique inner guide groove 212 is respectively connected to the inside of the L-shaped loading channel 100 and the inside of the Z-shaped unloading channel 200. The connection between the oblique inner guide groove 212 and the L-shaped loading channel 100 and the Z-shaped unloading channel 200 is designed with the same inclination angle.

[0031] Specifically, this description details the design features of the test frame 21, especially how it cooperates with the loading rack 23 and the unloading rack 24 and the corresponding loading port and unloading port 211 to realize the automatic loading and unloading process of the filter assembly. The test frame 21 has a loading port and a unloading port 211 respectively opened at specific positions on its surface. These two openings correspond to the positions of the loading rack 23 and the unloading rack 24 respectively. This design allows the filter assembly to smoothly enter the test frame 21 from the loading rack 23 and After the test is completed, the filter is discharged from the discharge port 211 to the discharge rack 24. The end of the upper rack 23 close to the upper port and the end of the lower rack 24 close to the discharge port 211 are both designed to be inclined. This inclined design helps the filter assembly to automatically slide down under the action of gravity, reduces the dependence on mechanical auxiliary devices, and improves the degree of automation. The height of the discharge port 211 is designed to be higher than the upper port, which ensures that the filter assembly can smoothly enter the interior of the test rack 21 and will not slide down to the discharge port 211 during the test. The inner diameters of the feed port and the discharge port 211 are precisely designed to be consistent with the length of the main body of the filter assembly excluding the end. This design ensures that the filter assembly can pass through these openings tightly and stably, avoiding shaking or jamming during transmission. In order to guide the filter assembly into and out of the test frame 21 more smoothly, the inner wall of the feed port corresponds to the position of the L-shaped feed channel 100, and the inner wall of the discharge port 211 corresponds to the position of the Z-shaped discharge channel 200. Both inclined inner guide grooves are symmetrically opened. Grooves 212, these oblique inner guide grooves 212 are not only connected to the inside of the L-shaped loading channel 100 and the Z-shaped unloading channel 200, but also their connections are designed with the same inclination angle to ensure that the filter assembly can transition smoothly when changing direction. Finally, this description shows a highly automated and ingeniously designed test frame 21 system, which realizes the automatic loading, testing and unloading process of the filter assembly through precise opening design, inclined frame structure and ingenious oblique inner guide groove 212 layout.

[0032] In one embodiment of the present invention, Figure 3 As shown, the lifting material frame 22 includes an upper frame 222 and a lower frame 223, which are respectively vertically slidably connected to the inner wall of the test frame 21 and are arranged up and down. The upper frame 222 and the lower frame 223 are separated by a set gap and connected by a fixing rod 224. The gap between the upper frame 222 and the lower frame 223 forms an inclined guide groove 225. The internal space width of the test frame 21 is consistent with the width of the upper frame 222, the width of the lower frame 223 and the outer diameter of the filter assembly. The internal space length of the upper frame 222 and the internal space length of the lower frame 223 are consistent with the outer diameter of the filter assembly. The length dimensions of the main body parts except the end heads are consistent, the internal space height and internal space depth of the inclined guide groove 225 are respectively consistent with the outer diameter and length dimensions of the end heads of the filter assembly, the inclined guide groove 225 respectively corresponds to the positions of the inclined inner guide groove 212 on the inner wall of the loading port and the inclined inner guide groove 212 on the inner wall of the unloading port 211, and are connected, and the connection between the inclined guide groove 225 and the two groups of inclined inner guide grooves 212 is designed with the same inclination angle, the top of the upper frame 222 is fixedly connected with a connecting handle 226, and the bottom of the lower frame 223 is fixedly connected with the first spring 221 between the bottom of the lower frame 223 and the inner bottom wall of the test frame 21.

[0033] Specifically, this description elaborates on the structure of the lifting material frame 22 and its matching relationship with the test frame 21, the upper material port, the lower material port 211 and the filter assembly. The lifting material frame 22 is composed of an upper frame 222 and a lower frame 223, which are respectively vertically slidably connected to the inner wall of the test frame 21 and arranged up and down. This design allows the material frame to move up and down in the test frame 21 to adapt to different operating requirements. The upper frame 222 and the lower frame 223 are connected by a fixing rod 224 and a gap is set at intervals. This gap not only provides the necessary space for installing and moving the filter assembly, but also forms The inclined guide groove 225 is located in the gap between the upper frame 222 and the lower frame 223. The height and depth of the internal space are respectively consistent with the outer diameter and length of the end of the filter assembly. This design ensures that the end of the filter assembly can smoothly enter and leave the inclined guide groove 225. The width of the internal space of the test frame 21 is designed to be consistent with the width of the upper frame 222 and the lower frame 223, and the outer diameter of the filter assembly. This design ensures the stability and accuracy of the material frame in the test frame 21. The length of the internal space of the upper frame 222 and the lower frame 223 is designed to be consistent with the outer diameter of the filter assembly. The length of the main part of the filter assembly except the end is consistent, which means that the main part of the filter assembly can be completely placed in the material frame, which is convenient for subsequent testing or processing. The inclined guide groove 225 corresponds to the position of the inclined inner guide groove 212 on the inner wall of the upper material port and the inclined inner guide groove 212 on the inner wall of the lower material port 211, and is connected. This design allows the filter assembly to enter the inclined guide groove 225 from the upper material port through the inclined inner guide groove 212, and then slide into the lower material port 211 through the inclined inner guide groove 212 on the other side after the test is completed. The connection between the inclined guide groove 225 and the two sets of inclined inner guide grooves 212 adopts the same The tilt angle design ensures that the filter assembly can transition smoothly during the transmission process and reduces the possibility of jamming or shaking. A connecting handle 226 is fixedly connected to the top of the upper frame 222. This handle facilitates the up and down movement of the lifting frame 22 and improves the convenience of operation. A first spring 221 is fixedly connected between the bottom of the lower frame 223 and the inner bottom wall of the test frame 21. The presence of the spring can provide a certain buffering effect when the lifting frame 22 descends, and also helps to provide a certain amount of assistance when the lifting frame 22 rises. In addition, it also helps to maintain the stability of the lifting frame 22 in a static state.

[0034] In one embodiment of the present invention, Figure 1 and Figure 6As shown, the cleaning mechanism 25 includes a cylindrical mounting seat 251, a horizontal pressing rod 252, a rectangular frame 254, a load-limiting slide plate 255, a first guide cylinder 257, a driving shaft 258, a driving gear 2511 and a cleaning slide block 2512. The cylindrical mounting seat 251 is threadedly connected to the outer surface of the test frame 21, and the horizontal pressing rod 252 is horizontally slidably connected to the inner wall of the cylindrical mounting seat 251. One end of the horizontal pressing rod 252 passes through the outside of the cylindrical mounting seat 251 and is fixedly connected to the surface of the cylindrical mounting seat 251 by a fourth elastic The other end of the horizontal pressing rod 252 penetrates into the interior of the test frame 21 and is fixedly connected with a rectangular frame 254. The load-limiting slide plate 255 is arranged inside the test frame 21 and is located inside the rectangular frame 254. One end of the load-limiting slide plate 255 close to the rectangular frame 254 is horizontally slidably connected to the inner wall of the rectangular frame 254, and a fifth spring 256 is fixedly connected to the surface of the rectangular frame 254. One end of the load-limiting slide plate 255 away from the rectangular frame 254 is respectively abutted against the outer surfaces of the upper frame 222 and the lower frame 223. The cleaning slider 2512 is symmetrically slidably connected to the end surface of the load-bearing and limiting slide plate 255 away from the rectangular frame 254, and is located inside the inclined guide groove 225. The two groups of cleaning sliders 2512 are respectively slidably connected to the inner wall of the inclined guide groove 225. The driving gear 2511 is rotatably connected to the inner wall of the load-bearing and limiting slide plate 255. One end of the two groups of cleaning sliders 2512 respectively penetrates into the interior of the inclined guide groove 225 and meshes with the driving gear 2511. The driving shaft 258 is fixedly connected to the inner wall of the rectangular frame 254. The first guide cylinder 257 is rotated It is dynamically connected to the surface of the load-bearing limiting slide plate 255 and corresponds to the fixed position of the driving shaft 258. One end of the first guide cylinder 257 is connected to the driving gear 2511. The other end of the first guide cylinder 257 passes through the interior of the rectangular frame 254 and is sleeved on the outside of the driving shaft 258. A spiral guide groove 259 and a first convex shaft 2510 are respectively provided at the positions corresponding to the surface of the first guide cylinder 257 and the surface of one end of the driving shaft 258. One end of the first convex shaft 2510 is located inside the spiral guide groove 259 and is slidably connected to the inner wall of the spiral guide groove 259.

[0035] It should be noted that cleaning cloths are respectively provided on the top and bottom of the cleaning slider 2512 , and the cleaning cloths are used to wipe the cleaning liquid remaining on the inner wall of the inclined guide groove 225 .

[0036] It should also be noted that the load-bearing and limiting slide plate 255 is located between the two sets of fixing rods 224 , and the outer shape of the cleaning slide block 2512 is adapted to the inner dimensions of the inclined guide groove 225 .

[0037] Specifically, the structure and connection relationship of the cleaning mechanism 25 are further described. Since the material frame is located inside the test frame 21, the inclined guide groove 225 is more difficult to clean than the L-shaped feeding channel 100 and the Z-shaped unloading channel 200. After use, if the inner wall of the inclined guide groove 225 is not cleaned in time, it may cause rust on its surface, affecting loading and unloading. Therefore, the cleaning mechanism 25 is provided in the device for cleaning the residual cleaning liquid on the inner wall of the inclined guide groove 225 after use. When the inclined guide groove 225 needs to be cleaned, 25, the operator presses the horizontal pressing rod 252 inwardly to move the rectangular frame 254 toward the inside of the test frame 21, and the movement of the rectangular frame 254 drives the load-limiting slide plate 255 to move together. When the load-limiting slide plate 255 abuts against the outer surfaces of the upper frame 222 and the lower frame 223, the cleaning slide block 2512 moves to the inside of the inclined guide groove 225 together with the load-limiting slide plate 255. As the horizontal pressing rod 252 is continuously pressed, the rectangular frame 254 will continue to move toward the load-limiting slide plate 255 and simultaneously compress the fifth spring 25 6. During this process, one end of the first guide cylinder 257 is synchronously slidably connected to the inner wall of the rectangular frame 254 and moves toward the driving shaft 258. During the movement of the first guide cylinder 257, since the first guide cylinder 257 corresponds to the fixed position of the driving shaft 258 and the first convex shaft 2510 is located inside the spiral guide groove 259, the sliding connection between the spiral guide groove 259 and the first convex shaft 2510 converts the linear motion of the first guide cylinder 257 into a rotational motion. The rotation of the first guide cylinder 257 synchronously drives the driving gear 2511 to rotate, and the driving gear 2511 rotates. The rotation of 511 drives the two groups of cleaning slide blocks 2512 meshing therewith to slide synchronously outward in the inclined guide groove 225, thereby cleaning the inner wall of the inclined guide groove 225. After the cleaning is completed, the horizontal pressing rod 252 is released, and the reset force of the fourth spring 253 and the fifth spring 256 pushes the rectangular frame 254 and the load-bearing limiting slide block 255 back to their original positions. As the rectangular frame 254 and the load-bearing limiting slide block 255 are reset, the two groups of cleaning slide blocks 2512 are also reset and moved out from the inclined guide groove 225, thereby completing the entire cleaning process.

[0038] In one embodiment of the present invention, Figure 7 As shown, the connecting portion 35 includes an outer conical connecting head 351 and an inner conical connecting head 352, and the outer conical connecting head 351 and the inner conical connecting head 352 are respectively fixedly connected to the surfaces of the two sets of sliding blocks 34, and the outer conical connecting head 351 and the inner conical connecting head 352 respectively correspond to the positions of the oil inlet end and the oil outlet end of the fuel filter assembly, and the outer dimensions are adapted, and the surface of the outer conical connecting head 351 and the inner wall of the inner conical connecting head 352 are respectively provided with O-rings.

[0039] Specifically, the connection part 35 is designed to ensure a stable connection and sealing between the fuel filter assembly and related pipes or components. The connection part 35 is mainly composed of an outer conical connection head 351 and an inner conical connection head 352. The two conical connection heads are respectively fixedly mounted on the surfaces of the two sets of sliding blocks 34. This design enables the connection part 35 to be adjusted according to the position of the sliding blocks 34 to adapt to different installation requirements or maintenance operations. The outer conical connection head 351 is designed to match the oil inlet end of the fuel filter assembly. Through its outer conical design, it can ensure a close fit with the oil inlet end to reduce the risk of leakage. The inner conical connection head 352 corresponds to the outer conical connection head 351. The inner conical connection head 352 is for connecting to the oil outlet end of the fuel filter assembly. Its inner conical design is also In order to ensure the tightness and sealing of the connection, the outer dimensions of the outer conical connector 351 and the inner conical connector 352 are designed to be compatible with the oil inlet and outlet ends of the fuel filter assembly. This adaptability not only ensures the stability of the connection, but also avoids leakage or installation difficulties caused by size mismatch. In order to further improve the sealing of the connection, O-rings are respectively provided on the surface of the outer conical connector 351 and the inner wall of the inner conical connector 352. The O-ring is a commonly used sealing element with good elasticity and sealing performance, which can effectively prevent fuel leakage at the connection. Finally, the connecting part 35 ensures a stable connection and good sealing between the fuel filter assembly and related pipes or components through its unique conical design and the application of O-rings, providing an important guarantee for the normal operation of the fuel system.

[0040] In one embodiment of the present invention, Figure 8 As shown, the pressing mechanism 41 includes a horizontal bracket 411, an arc-shaped pressing seat 412, a side bracket 413, a limiting portion 414, a conical portion 415 and a hydraulic telescopic rod 416. The hydraulic telescopic rod 416 is fixedly connected to the top of the test frame 21. The output end of the hydraulic telescopic rod 416 penetrates into the interior of the test frame 21 and is fixedly connected to the horizontal bracket 411. The arc-shaped pressing seat 412 is symmetrically fixedly connected to the surface of the horizontal bracket 411 and corresponds to the position of the connecting handle 226. The bottom of the arc-shaped pressing seat 412 is provided with an arc shaped groove 4121, and contacts with the surface of the connecting handle 226, the side bracket 413 is symmetrically fixedly connected to the bottom of the horizontal bracket 411, and is located on the outside of the arc-shaped pressure seat 412, the limiting portion 414 and the tapered portion 415 are respectively arranged on the upper and lower surfaces of the side bracket 413, and correspond to the position of the sliding block 34, and a tapered groove 37 is opened at the position corresponding to the position of the tapered portion 415 on the surface of the sliding block 34, and the tapered portion 415 is slidably connected to the inner wall of the tapered groove 37, and the outer shape of the tapered portion 415 is adapted to the inner size of the tapered groove 37.

[0041] Specifically, the structure and connection relationship of the pressing mechanism 41 are further explained. The pressing mechanism 41 is a simple mechanical device, which is designed to apply pressure or position components in the test frame 21, such as the connecting handle 226 and the sliding block 34, through precise control and positioning. When in use, the hydraulic telescopic rod 416 is started, and the hydraulic telescopic rod 416 drives its output end to move downward. The output end moves downward and synchronously drives the horizontal bracket 411 to move downward. The horizontal bracket 411 moves downward and synchronously drives the arc pressure seat 412 and the side bracket 413 to move downward. During the downward movement of the side bracket 413, the conical portion 415 at the bottom is first inserted into the conical groove 37 on the surface of the conical portion 415, and synchronously squeezes the conical groove 37 to move toward the lifting material frame 22. The movement of the conical groove 37 synchronously drives the sliding block 34 to move along the inner wall of the lifting base 32 and stretches the third spring 36. The movement of the sliding block 34 synchronously drives the connecting portion 35 to move and is connected to the end of the filter assembly. When the limit When the positioning portion 414 contacts the top of the sliding block 34, the arc-shaped pressure seat 412 contacts the connecting handle 226 synchronously. As the horizontal bracket 411 continues to descend, it synchronously drives the lifting base 32 and the lifting material frame 22 to descend along the inner wall of the test frame 21 respectively, and compresses the first spring 221 and the second spring 33 respectively. When the output end of the hydraulic telescopic rod 416 extends to the maximum stroke, the connecting portion 35 and the filter assembly are both located below the liquid level of the test liquid. Then, the solenoid valve on the connecting portion 35 is opened to perform pressure detection on the internal inflation of the filter assembly. After the pressure detection is completed, the hydraulic telescopic rod 416 is reset, and synchronously drives the limiting portion 414 and the arc-shaped pressure seat 412 to rise. After losing the extrusion force, the lifting base 32 and the lifting material frame 22 are reset under the elastic force of the first spring 221 and the second spring 33. When the conical portion 415 rises and separates from the conical groove 37, the sliding block 34 is reset under the elastic force of the third spring 36, and synchronously drives the connecting portion 35 and the end of the filter assembly to separate.

[0042] In one embodiment of the present invention, Fig. 9As shown, the lifting mechanism 42 includes an arc hook 421, a worm wheel 422, a worm 423, a synchronous shaft 424, a second guide cylinder 425, a second convex shaft 426 and a limiting guide groove 427. The inner wall of the arc groove 4121 is symmetrically provided with hook holes 41211. The arc hook 421 is slidably connected to the inner wall of the hook hole 41211. The worm wheel 422 is rotatably connected to the inner wall of the arc pressure seat 412 and is fixedly connected to one end of the arc hook 421. The worm 423 is rotatably connected to the inner wall of the arc pressure seat 412 and meshes with the worm wheel 422. The synchronous shaft 424 is rotatably connected to the inner wall of the test frame 21. One end of the synchronous shaft 424 penetrates into the interior of the arc pressure seat 412 and is connected to the worm 423. The synchronous shaft 424 One end of the rotating shaft 424 passes through the top of the test frame 21 and is fixedly connected to the second cam 426. The second guide cylinder 425 is fixedly connected to the top of the test frame 21 and is sleeved on the outside of the synchronous rotating shaft 424. A limiting guide groove 427 is opened on the surface of the second guide cylinder 425 at a position corresponding to the position of the second cam 426. One end of the second cam 426 is located inside the limiting guide groove 427 and is slidably connected to the inner wall of the limiting guide groove 427. The limiting guide groove 427 includes an upper vertical section 4271, a middle spiral section 4272 and a lower vertical section 4273, wherein the upper vertical section 4271, the middle spiral section 4272 and the lower vertical section 4273 are opened in sequence from top to bottom on the surface of the second guide cylinder 425 and are connected.

[0043] It should be noted that the function of the middle spiral section 4272 is to drive the arc hook 421 to operate and realize the opening and closing of the arc hook 421, while the upper vertical section 4271 and the lower vertical section 4273 ensure that the arc hook 421 will not be triggered to operate during the lifting process of the arc pressure seat 412. The operation is simple and the use effect is good.

[0044] Specifically, the structure and connection relationship of the lifting mechanism 42 are further explained. After the lifting material frame 22 is reset, the arc pressure seat 412 is separated from the connecting handle 226, and the hydraulic telescopic rod 416 continues to operate and synchronously drives the horizontal bracket 411 and the arc pressure seat 412 to move upward. During the upward movement of the arc pressure seat 412, it synchronously drives the synchronous rotating shaft 424 to move upward along the inner wall of the second guide cylinder 425. The upward movement of the synchronous rotating shaft 424 synchronously drives the second convex shaft 426 to move upward along the inner wall of the limiting guide groove 427. After the arc pressure seat 412 is separated from the connecting handle 226, the second convex shaft 426 begins to move along the inner wall of the middle spiral section 4272 in the limiting guide groove 427, and is affected by the spiral movement of the middle spiral section 4272. Due to structural influence, the second cam 426 synchronously drives the synchronous shaft 424 to rotate during the movement, the rotation of the synchronous shaft 424 synchronously drives the worm 423 to rotate, the rotation of the worm 423 synchronously drives the worm wheel 422 to rotate, the rotation of the worm wheel 422 synchronously drives the arc hook 421 to be inserted out from the hook hole 41211 on one side, then bypass the bottom of the connecting handle 226, and then insert into the hook hole 41211 on the other side. When the second cam 426 enters the upper vertical section 4271 in the limiting guide groove 427, the arc hook 421 stops moving, and as the arc pressure seat 412 continues to rise, the arc hook 421 synchronously drives the connecting handle 226 and the lifting frame 22 to rise, thereby driving the tested filter assembly to the position of the discharge port 211.

[0045] In summary, a fuel filter sealing performance testing device according to an embodiment of the present invention integrates an automatic loading and unloading system, which can seamlessly connect the loading and unloading processes of the filter without manual intervention, greatly improving the efficiency and capacity of the testing work. Its core function is to automatically and accurately connect the oil inlet and outlet of the filter, and immediately perform sealing performance testing. No manual operation is required throughout the process, thereby significantly reducing labor intensity and greatly improving testing efficiency. By reducing the intervention of human factors in the testing process, the automated design of the equipment not only speeds up the testing speed, but also greatly improves the accuracy and reliability of the test results.

[0046] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0048] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and deform the above embodiments within the scope of the present invention.

Claims

1. A fuel filter sealing performance testing device, characterized in that: It comprises a test water tank (1), a test frame assembly (2), an air pressure test assembly (3) and a drive assembly (4), wherein: The test frame assembly (2) comprises a test frame body (21), a lifting material frame (22), a loading frame (23), a unloading frame (24) and a cleaning mechanism (25); the test frame body (21) is fixedly connected to the inner side wall of the test water tank (1); the lifting material frame (22) is vertically slidably connected to the inner side wall of the test frame body (21), and a first spring (221) is fixedly connected to the inner bottom wall of the test frame body (21); the loading frame (23) and the unloading frame (24) are respectively fixedly connected to the outer surface of the test frame body (21) and correspond to the position of the lifting material frame (22); the cleaning mechanism (25) is fixedly connected to the outer surface of the test water tank (1); one end of the cleaning mechanism (25) penetrates into the interior of the test frame body (21) and contacts the lifting material frame (22); the air pressure test assembly (3) comprises a lifting base (32), a sliding block (34) and a connecting portion (35), the lifting base (32) is symmetrically and vertically slidably connected to the inner side wall of the test frame (21), and a second spring (33) is fixedly connected to the inner bottom wall of the test frame (21), the sliding block (34) is horizontally slidably connected to the inner wall of the lifting base (32), and a third spring (36) is fixedly connected to the surface of the lifting base (32), the connecting portion (35) is fixedly connected to the surface of the sliding block (34) and is located on the outside of the lifting material frame (22), the driving component (4) comprises a pressing mechanism (41) and a lifting mechanism (42), the pressing mechanism (41) is arranged on the inner wall of the test frame (21) and is respectively in contact with the lifting material frame (22) and the sliding block (34), and the lifting mechanism (42) is arranged on the pressing mechanism (41).

2. The fuel filter sealing performance testing device according to claim 1, characterized in that: The loading rack (23) comprises two groups of L-shaped racks arranged in an upper and lower position, and the unloading rack (24) comprises two groups of Z-shaped racks arranged in an upper and lower position, the gap between the two groups of L-shaped racks forms an L-shaped loading channel (100), and the gap between the two groups of Z-shaped racks forms a Z-shaped unloading channel (200), the internal space lengths of the two groups of L-shaped racks and the two groups of Z-shaped racks are consistent with the length dimension of the main part of the filter assembly excluding the end head, the internal space height and internal space depth of the L-shaped loading channel (100) and the Z-shaped unloading channel (200) are respectively consistent with the outer diameter and length dimension of the end head of the filter assembly, and the inner top wall and the inner bottom wall of the end of the Z-shaped unloading channel (200) are firmly bonded with a conical elastic buffer strip (300) by a high-strength adhesive, and the conical surfaces of the two groups of the conical elastic buffer strips (300) are opposite to each other.

3. The fuel filter sealing performance testing device according to claim 2, characterized in that: A loading port and a loading port (211) are respectively provided on the surface of the test frame (21) at positions corresponding to the loading frame (23) and the loading frame (24); one end of the loading frame (23) close to the loading port and one end of the loading frame (24) close to the loading port (211) are both arranged obliquely; the height of the loading port (211) is higher than that of the loading port; the inner diameter of the loading port and the inner diameter of the loading port (211) are consistent with the length of the main body of the filter assembly excluding the end head; the inner wall of the loading port is in contact with the filter assembly; An oblique inner guide groove (212) is symmetrically and obliquely provided at a position corresponding to the position of the L-shaped feeding channel (100) and at a position corresponding to the position of the inner wall of the feeding opening (211) and the Z-shaped feeding channel (200), respectively. The oblique inner guide groove (212) is connected to the inside of the L-shaped feeding channel (100) and the inside of the Z-shaped feeding channel (200), respectively. The connection between the oblique inner guide groove (212) and the L-shaped feeding channel (100) and the Z-shaped feeding channel (200) is designed with the same inclination angle.

4. The fuel filter sealing performance testing device according to claim 3, characterized in that: The lifting material frame (22) comprises an upper frame (222) and a lower frame (223), wherein the upper frame (222) and the lower frame (223) are respectively vertically slidably connected to the inner wall of the test frame (21) and are arranged up and down, and a set gap is set between the upper frame (222) and the lower frame (223) and they are connected by a fixing rod (224), and the gap between the upper frame (222) and the lower frame (223) forms an inclined guide groove (225), the internal space width of the test frame (21) is consistent with the width of the upper frame (222), the width of the lower frame (223) and the outer diameter of the filter assembly, and the internal space length of the upper frame (222) and the internal space length of the lower frame (223) are consistent with the outer diameter of the filter assembly. The main body of the filter assembly excluding the end has the same length dimensions, the internal space height and internal space depth of the inclined guide groove (225) are respectively consistent with the outer diameter and length dimensions of the end of the filter assembly, the inclined guide groove (225) corresponds to the position of the inclined inner guide groove (212) on the inner wall of the upper material port and the inclined inner guide groove (212) on the inner wall of the lower material port (211), and is connected, the connection between the inclined guide groove (225) and the two groups of the inclined inner guide grooves (212) is designed with the same inclination angle, the top of the upper frame (222) is fixedly connected with a connecting handle (226), and the bottom of the lower frame (223) and the inner bottom wall of the test frame (21) are fixedly connected with the first spring (221).

5. The fuel filter sealing performance testing device according to claim 4, characterized in that: The cleaning mechanism (25) comprises a cylindrical mounting seat (251), a horizontal pressing rod (252), a rectangular frame (254), a load-bearing limiting slide plate (255), a first guide cylinder (257), a driving shaft (258), a driving gear (2511) and a cleaning slide block (2512); the cylindrical mounting seat (251) is threadedly connected to the outer surface of the test frame (21); the horizontal pressing rod (252) is horizontally slidably connected to the inner wall of the cylindrical mounting seat (251); one end of the horizontal pressing rod (252) passes through the outside of the cylindrical mounting seat (251) and is fixedly connected to the surface of the cylindrical mounting seat (251) by a fourth spring (253); The other end of the horizontal pressing rod (252) penetrates into the interior of the test frame (21) and is fixedly connected to the rectangular frame (254); the load-limiting slide plate (255) is arranged inside the test frame (21) and is located inside the rectangular frame (254); one end of the load-limiting slide plate (255) close to the rectangular frame (254) is horizontally slidably connected to the inner wall of the rectangular frame (254), and a fifth spring (256) is fixedly connected to the surface of the rectangular frame (254); one end of the load-limiting slide plate (255) away from the rectangular frame (254) abuts against the outer surfaces of the upper frame (222) and the lower frame (223), respectively. The cleaning sliders (2512) are symmetrically slidably connected to the surface of one end of the load-bearing and limiting slide plate (255) away from the rectangular frame (254) and are located inside the inclined guide groove (225). The two groups of cleaning sliders (2512) are respectively slidably connected to the inner wall of the inclined guide groove (225). The driving gear (2511) is rotatably connected to the inner wall of the load-bearing and limiting slide plate (255). One end of the two groups of cleaning sliders (2512) respectively penetrates into the interior of the inclined guide groove (225) and meshes with the driving gear (2511). The driving shaft (258) is fixedly connected to the inner wall of the rectangular frame (254). The first guide cylinder (257) The first guide cylinder (257) is rotatably connected to the surface of the load-bearing limiting slide plate (255) and corresponds to the fixed position of the driving shaft (258). One end of the first guide cylinder (257) is connected to the driving gear (2511). The other end of the first guide cylinder (257) passes through the interior of the rectangular frame (254) and is sleeved on the outside of the driving shaft (258). A spiral guide groove (259) and a first convex shaft (2510) are respectively provided at positions corresponding to the surface of one end of the driving shaft (258). One end of the first convex shaft (2510) is located inside the spiral guide groove (259) and is slidably connected to the inner wall of the spiral guide groove (259).

6. The fuel filter sealing performance testing device according to claim 1, characterized in that: The connecting portion (35) comprises an outer conical connecting head (351) and an inner conical connecting head (352), the outer conical connecting head (351) and the inner conical connecting head (352) being respectively fixedly connected to the surfaces of the two sets of sliding blocks (34), the outer conical connecting head (351) and the inner conical connecting head (352) respectively corresponding to the positions of the oil inlet end and the oil outlet end of the fuel filter assembly, and having matching external dimensions, and the surface of the outer conical connecting head (351) and the inner wall of the inner conical connecting head (352) are respectively provided with O-type sealing rings.

7. The fuel filter sealing performance testing device according to claim 4, characterized in that: The pressing mechanism (41) comprises a horizontal support (411), an arc-shaped pressing seat (412), a side support (413), a limiting portion (414), a conical portion (415) and a hydraulic telescopic rod (416); the hydraulic telescopic rod (416) is fixedly connected to the top of the test frame (21); the output end of the hydraulic telescopic rod (416) penetrates into the interior of the test frame (21) and is fixedly connected to the horizontal support (411); the arc-shaped pressing seat (412) is symmetrically fixedly connected to the surface of the horizontal support (411) and corresponds to the position of the connecting handle (226); the bottom of the arc-shaped pressing seat (412) is provided with an arc-shaped groove (412) 1), and in contact with the surface of the connecting handle (226), the side bracket (413) is symmetrically fixedly connected to the bottom of the horizontal bracket (411) and is located outside the arc-shaped pressure seat (412), the limiting portion (414) and the conical portion (415) are respectively arranged on the surface of the side bracket (413) up and down, and correspond to the position of the sliding block (34), and a conical groove (37) is opened at the surface of the sliding block (34) corresponding to the position of the conical portion (415), the conical portion (415) is slidably connected to the inner wall of the conical groove (37), and the outer shape of the conical portion (415) is adapted to the inner size of the conical groove (37).

8. The fuel filter sealing performance testing device according to claim 1 or 7, characterized in that: The lifting mechanism (42) comprises an arc-shaped hook (421), a worm wheel (422), a worm (423), a synchronous rotating shaft (424), a second guide cylinder (425), a second convex shaft (426) and a limiting guide groove (427); hook holes (41211) are symmetrically provided on the inner wall of the arc-shaped groove (4121); the arc-shaped hook (421) is slidably connected to the inner wall of the hook hole (41211); the worm wheel (422) is rotatably connected to the inner wall of the hook hole (41211); The arc-shaped pressure seat (412) is fixedly connected to the inner wall of the arc-shaped pressure seat (412), and is fixedly connected to one end of the arc-shaped hook (421); the worm (423) is rotatably connected to the inner wall of the arc-shaped pressure seat (412) and meshes with the worm wheel (422); the synchronous rotating shaft (424) is rotatably connected to the inner wall of the test frame (21); one end of the synchronous rotating shaft (424) penetrates into the interior of the arc-shaped pressure seat (412) and is connected to the worm (423); One end of the synchronous rotating shaft (424) passes through the top of the test frame (21) and is fixedly connected to the second convex shaft (426); the second guide cylinder (425) is fixedly connected to the top of the test frame (21) and is sleeved on the outside of the synchronous rotating shaft (424); the surface of the second guide cylinder (425) is provided with the limiting guide groove (427) at a position corresponding to the position of the second convex shaft (426); one end of the second convex shaft (426) is located inside the limiting guide groove (427) and is slidably connected to the inner wall of the limiting guide groove (427); the limiting guide groove (427) comprises an upper vertical section (4271), a middle spiral section (4272) and a lower vertical section (4273); wherein the upper vertical section (4271), the middle spiral section (4272) and the lower vertical section (4273) are sequentially provided on the surface of the second guide cylinder (425) from top to bottom and are connected.

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