Three-way valve sealing performance detection equipment

Abstract

The invention discloses three-way valve sealing performance detection equipment which comprises a three-way valve body, a sealing performance detection assembly is arranged on the three-way valve body, and the sealing performance detection assembly inspects the sealing performance of the three-way valve body in a mechanical driving mode and can inspect the sealing performance of the three-way valve body regularly. According to the three-way valve body airtightness detection device, the airtightness detection assembly is arranged to replace traditional manual pressing, timing and a valve switch in the three-way valve body, so that airtightness detection of the three-way valve body is simpler, too much manual intervention is not needed, the detection efficiency of the three-way valve body is improved, the reliability of a detection result is guaranteed, and the detection efficiency is improved. In addition, the labor cost of three-way valve body detection can be reduced, the requirement for three-way valve body sealing performance detection in industrial production is met, and in addition, the sealing performance of the three-way valve body can be detected regularly.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sealing detection equipment, in particular to a tee valve sealing detection equipment. BACKGROUND

[0002] The tee valve is a common valve for controlling fluid flow direction, with three connection ports, which can distribute fluid from one inlet to two outlets, or control the flow direction in reverse. Such valves are widely used in industries, chemical industry, heating and ventilation, pneumatic and hydraulic fields, and their sealing performance is crucial. Therefore, the tee valve sealing detection equipment is one of the key steps in the production process when the tee valve is produced.

[0003] At present, the commonly used tee valve sealing detection equipment adopts manual pressing, timing, tee valve body valve opening and closing and other operations. Since manual work will be tired for a long time, the work efficiency will be reduced, and the accuracy will also be reduced. SUMMARY

[0004] The purpose of the present application is to provide a tee valve sealing detection equipment to solve the problems in the background art.

[0005] In the first aspect, the present application provides a tee valve sealing detection equipment adopting the following technical scheme: a tee valve body is provided, a sealing detection assembly is arranged on the tee valve body, the sealing detection assembly checks the sealing performance of the tee valve body by mechanical driving mode, and the sealing performance of the tee valve body can be checked at a fixed time.

[0006] Preferably, the sealing detection assembly comprises a pneumatic actuator, a time relay, a gas pump, a high-pressure pipe, a filter pressure reducing valve, a pressure reducing valve body, a connecting pipe, a connecting head and an auxiliary filter assembly, the pneumatic actuator is arranged on the tee valve body, and the pneumatic actuator is connected with the valve in the tee valve body, the time relay is arranged on the pneumatic actuator, and the time relay is connected with the pneumatic actuator through electrical signal, the gas pump is arranged on one side of the tee valve body, the filter pressure reducing valve is arranged between the tee valve body and the gas pump, the pressure reducing valve body is arranged on one side of the filter pressure reducing valve, and the auxiliary filter assembly is arranged between the gas pump and the filter pressure reducing valve.

[0007] Preferably, the high-pressure pipe is provided with a plurality of high-pressure pipes, the two ends of the plurality of high-pressure pipes are connected to the air pump and the auxiliary filter assembly, the auxiliary filter assembly and the filter pressure reducing valve, the filter pressure reducing valve and the pressure reducing valve body, the connecting pipe is connected to the high-pressure pipe, and one end of the connecting pipe connected to the connecting pipe is located between the pressure reducing valve body and the filter pressure reducing valve, the other end of the connecting pipe away from the high-pressure pipe is connected to the pneumatic actuator, the connecting head is arranged at the end of the high-pressure pipe away from the pressure reducing valve body, the connecting head is connected to the three-way valve body, the time relay is provided with an electromagnetic valve, and the electromagnetic valve is connected to the time relay and the valve inside the three-way valve body through an electric signal.

[0008] The technical scheme has the advantages that the sealing detection assembly is arranged to replace the traditional manual pressing, timing, and opening and closing of the valve inside the three-way valve body, so that the sealing detection of the three-way valve body is simpler and does not require too much manual intervention, the detection efficiency of the three-way valve body is improved, the reliability of the detection result is ensured, the labor cost for detecting the three-way valve body is reduced, the demand for detecting the sealing performance of the three-way valve body in industrial production is met, and the sealing of the three-way valve body can be checked at regular intervals.

[0009] In the second aspect, the three-way valve sealing detection device provided by the present application adopts the following technical scheme: the auxiliary filter assembly comprises a filter and a replacement assembly, the replacement assembly is arranged on the filter, the filter comprises a filter box, a through opening is formed in the filter box, a filter plate body is arranged inside the through opening, and an auxiliary limiting assembly is arranged on the upper end inside the through opening.

[0010] Preferably, the auxiliary limiting assembly comprises a containing groove formed in the top end inside the through opening, a fixed vertical plate and a turnover plate are arranged inside the containing groove, the turnover plate is provided with two, the two turnover plates are rotationally connected to the two sides of the fixed vertical plate, a limiting block is arranged on the lower end face of the end of the turnover plate away from the fixed vertical plate, the lower end face of the limiting block extends to the inside of the through opening through the containing groove, and the two limiting blocks are located on the two sides of the filter plate body, and a chamfer is formed at the edge corner of the lower end face of the limiting block and opposite to the filter plate body.

[0011] Preferably, a guide groove is formed in the fixed vertical plate, an error tolerance opening is formed in the side wall face of the turnover plate opposite to the fixed vertical plate, a horizontal plate is arranged between the two turnover plates, and the two ends of the horizontal plate are rotationally connected to the error tolerance openings in the two turnover plates.

[0012] Preferably, a vertical plate body is arranged inside the guide groove, the vertical plate body passes through the horizontal plate, a spiral spring is sleeved on the vertical plate body, the spiral spring is located above the horizontal plate, and the two ends of the spiral spring are connected to the top end inside the guide groove and the horizontal plate.

[0013] The technical scheme has the following beneficial effects: The auxiliary filtering assembly is arranged to preliminarily filter the gas delivered to the filtering pressure reducing valve, so that the dust and impurities in the delivered gas are reduced, the maintenance time of the filtering pressure reducing valve is prolonged, the pushing and replacing steps of the filtering plate body are simple, the time for stopping the operation of the device and performing the complicated cleaning steps due to the filtering pressure reducing valve being blocked by too many impurities is saved, and the working efficiency of the device is improved. The auxiliary limiting assembly is arranged to limit the position of the filtering plate body inside the through opening, so that the filtering plate body inside the through opening is prevented from being pushed out of the filtering box by the uneven air pressure, and the filtering box is prevented from leaking and failing to filter the gas.

[0014] In a third aspect, the three-way valve sealing detection device provided by the application adopts the following technical scheme: the replacing assembly includes a containing box arranged on the filtering box, a replacing opening is formed in the containing box, the replacing opening corresponds to the position of the through opening, a fixing plate is arranged on the containing box, a door plate is arranged on one side of the fixing plate, the door plate is rotatably connected to the containing box by a hinge, and an electric telescopic device is arranged on the fixing plate.

[0015] Preferably, the output end of the electric telescopic device extends to the inside of the containing box through the fixing plate, one end of the electric telescopic device extending to the inside of the containing box is provided with a pushing plate, a plurality of filtering plates to be replaced are arranged in the inside of the containing box, one side of the plurality of filtering plates to be replaced is provided with a top plate, the top plate abuts against one of the filtering plates to be replaced, one side of the top plate is provided with a fixing spring, both ends of the fixing spring are connected to the top plate and one wall surface in the inside of the containing box, one side of the fixing spring is provided with a dustproof folding plate, and both ends of the dustproof folding plate are connected to the top plate and one wall surface in the inside of the containing box.

[0016] Preferably, first sliding grooves are formed in the upper and lower wall surfaces in the inside of the containing box, first sliding blocks are arranged on the upper and lower wall surfaces of the top plate, the two first sliding blocks are slidably connected in the two first sliding grooves, a second sliding groove is formed in one side of the first sliding groove, a plurality of return springs are arranged in the inside of the second sliding groove in sequence, a baffle is inserted in the inside of the second sliding groove, and inclined openings are formed in the edge corners of the two baffles opposite to one wall surface and facing the door plate.

[0017] The replacing assembly is arranged to replace the filtering plate body in the inside of the filtering box, so that the replacing efficiency of the filtering plate body in the inside of the filtering box is improved.

[0018] In summary, the application has the following beneficial technical effects: The sealing detection assembly is arranged instead of traditional manual pressing, timing and valve switching in the three-way valve body, so that the sealing detection of the three-way valve body is simpler and does not need too much manual intervention, the detection efficiency of the three-way valve body is improved, the reliability of the detection result is ensured, the labor cost of the three-way valve body detection is reduced, the demand for the sealing performance detection of the three-way valve body in industrial production is met, in addition, the sealing of the three-way valve body can be checked at regular intervals; The auxiliary filtering assembly is arranged to preliminarily filter the gas delivered to the filtering pressure reducing valve, so that the dust and impurities in the delivered gas are reduced, the maintenance time of the filtering pressure reducing valve is prolonged, the pushing and replacing steps of the filtering plate body are simple, the time for stopping the operation of the equipment and performing the complicated cleaning steps due to too much filtering impurities of the filtering pressure reducing valve is relieved, so that the working efficiency of the equipment is effectively improved; the auxiliary limiting assembly is arranged to limit the position of the filtering plate body inside the through port, so that the filtering plate body inside the through port is prevented from being pushed out from the inside of the filtering box due to uneven air pressure, so that the filtering box leaks and the gas cannot be filtered; The replacement assembly is arranged to replace the filtering plate body inside the filtering box, so that the replacement efficiency of the filtering plate body inside the filtering box is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application.

[0020] Figure 2 is a perspective view of the connection of the air pump and the connecting head of the embodiment of the present application; Figure 3 is a perspective view of the auxiliary filtering assembly of the embodiment of the present application; Figure 4 is the first perspective view of the exploded view of the auxiliary filtering assembly of the embodiment of the present application; Figure 5 is the second perspective view of the exploded view of the auxiliary filtering assembly of the embodiment of the present application; Figure 6 is a sectional view of the filtering box of the embodiment of the present application; Figure 7 is a sectional view of the fixed vertical plate and the turnover plate of the embodiment of the present application.

[0021] Explanation of reference signs: 1, three-way valve body; 2, pneumatic actuator; 3, time relay; 4, air pump; 5, high-pressure pipe; 6, filter pressure reducing valve; 7, pressure reducing valve body; 8, connecting pipe; 9, connecting head; 10, auxiliary filter assembly; 11, filter; 111, filter box; 112, through port; 1121, containing groove; 1122, fixed vertical plate; 1123, turnover plate; 1124, limiting block; 1125, guide groove; 1126, fault-tolerant port; 1127, vertical plate body; 1128, horizontal plate; 1129, spiral spring; 113, filter plate body; 12, replacement assembly; 121, containing box; 122, fixed plate; 123, electric telescopic device; 124, filter plate to be replaced; 125, top plate; 126, fixed spring; 127, push plate; 128, dustproof folding plate; 13, first sliding groove; 14, second sliding groove; 15, return spring; 16, baffle. DETAILED DESCRIPTION

[0022] The following will be described in detail in combination with the accompanying drawings. Figure 1 The accompanying drawings are included to provide a further understanding of the present application. Figure 7 Further detailed description will be made to the present application.

[0023] Example 1: A three-way valve sealing detection device, comprising a three-way valve body 1, the three-way valve body 1 is provided with a sealing detection assembly, the sealing detection assembly checks the sealing of the three-way valve body 1 through a mechanical driving mode, and the sealing of the three-way valve body 1 can be checked regularly.

[0024] The sealing detection assembly comprises a pneumatic actuator 2, a time relay 3, an air pump 4, a high-pressure pipe 5, a filter pressure reducing valve 6, a pressure reducing valve body 7, a connecting pipe 8, a connecting head 9 and an auxiliary filter assembly 10, the pneumatic actuator 2 is arranged on the three-way valve body 1, and the pneumatic actuator 2 is connected with a valve in the three-way valve body 1, the time relay 3 is arranged on the pneumatic actuator 2, and the time relay 3 is connected with the pneumatic actuator 2 through an electric signal, the air pump 4 is arranged on one side of the three-way valve body 1, the filter pressure reducing valve 6 is arranged between the three-way valve body 1 and the air pump 4, the pressure reducing valve body 7 is arranged on one side of the filter pressure reducing valve 6, and the auxiliary filter assembly 10 is arranged between the air pump 4 and the filter pressure reducing valve 6.

[0025] It should be noted that the arrangement of the filter pressure reducing valve 6 can filter the gas delivered to the three-way valve body 1 and the pneumatic actuator 2, so as to reduce the influence of mixed dust impurities in the delivered gas on the measurement results of the three-way valve body 1 and the normal use of the pneumatic actuator 2.

[0026] The high-pressure pipe 5 is provided with a plurality of high-pressure pipes 5, both ends of the plurality of high-pressure pipes 5 are connected to the air pump 4 and the auxiliary filtering assembly 10, the auxiliary filtering assembly 10 and the filtering pressure reducing valve 6, the filtering pressure reducing valve 6 and the pressure reducing valve body 7, the connecting pipe 8 is connected to the high-pressure pipe 5, and one end of the connecting pipe 8 connected to the connecting pipe 8 is located between the pressure reducing valve body 7 and the filtering pressure reducing valve 6, the end of the connecting pipe 8 away from the high-pressure pipe 5 is connected to the pneumatic actuator 2, the connecting head 9 is arranged at the end of the high-pressure pipe 5 away from the pressure reducing valve body 7, the connecting head 9 is connected to the three-way valve body 1, the solenoid valve is arranged on the time relay 3, and the solenoid valve is connected to the time relay 3 and the valve inside the three-way valve body 1 through an electric signal.

[0027] In the embodiment, when the sealing detection of the three-way valve body 1 is needed, the air pump 4 is started to inflate the inside of the three-way valve body 1, and the driving gas energy is provided to the pneumatic actuator 2, the gas is filtered and pressurized by the filtering pressure reducing valve 6 in the process of conveying, the gas is secondarily pressurized by the pressure reducing valve body 7, then the time relay 3 is set to the valve opening and closing time of the three-way valve body 1 driven by the pneumatic actuator 2, the time relay 3 drives the valve opening and closing of the three-way valve body 1 through the solenoid valve, and then the pressure value change in the three-way valve body 1 can be observed.

[0028] The sealing detection assembly is arranged to replace the traditional manual pressure, timing, and valve opening and closing in the three-way valve body 1, so that the sealing detection of the three-way valve body 1 is more simple, and too much manual intervention is not needed, which improves the detection efficiency of the three-way valve body 1, ensures the reliability of the detection result, reduces the labor cost of the three-way valve body 1 detection, meets the sealing performance detection demand of the three-way valve body 1 in industrial production, and can also check the sealing of the three-way valve body 1 at regular intervals.

[0029] Embodiment 2: The auxiliary filtering assembly 10 comprises a filtering piece 11 and a replacement assembly 12, the replacement assembly 12 is arranged on the filtering piece 11, the filtering piece 11 comprises a filtering box 111, a through port 112 is arranged on the filtering box 111, a filtering plate body 113 is arranged inside the through port 112, and an auxiliary limiting assembly is arranged on the upper end inside the through port 112.

[0030] The auxiliary limiting assembly comprises a containing groove 1121 arranged in the top end inside the through port 112, a fixed vertical plate 1122 and a turnover plate 1123 are arranged inside the containing groove 1121, the turnover plate 1123 is provided with two, the two turnover plates 1123 are rotationally connected on both sides of the fixed vertical plate 1122, a limiting block 1124 is arranged on the lower end face of the end of the turnover plate 1123 away from the fixed vertical plate 1122, the lower end face of the limiting block 1124 extends to the inside of the through port 112 through the containing groove 1121, and the two limiting blocks 1124 are located on both sides of the filtering plate body 113, and a chamfer is arranged at the edge corner of the lower end face of the limiting block 1124 and opposite to the filtering plate body 113.

[0031] The fixed vertical plate 1122 is provided with a guide slot 1125, and the side wall surface opposite to the fixed vertical plate 1122 of the turnover plate 1123 is provided with a fault tolerance opening 1126. The horizontal plate 1128 is arranged between the two turnover plates 1123, and the two ends of the horizontal plate 1128 are respectively rotationally connected in the fault tolerance openings 1126 on the two turnover plates 1123.

[0032] The vertical plate body 1127 is arranged in the inner side of the guide slot 1125, the vertical plate body 1127 penetrates through the horizontal plate 1128, the helical spring 1129 is sleeved on the vertical plate body 1127, the helical spring 1129 is located above the horizontal plate 1128, and the two ends of the helical spring 1129 are respectively connected with the inner top end of the guide slot 1125 and the horizontal plate 1128.

[0033] It should be noted that the filter plate body 113 is composed of a metal frame and a plurality of filter screens, and the four corners of the metal frame are provided with inclined openings. The inclined openings enable the limiting blocks 1124 to be inserted between the two mutually adhered filter plate bodies 113 and to separate them.

[0034] In the embodiment, when it is necessary to replace the filter plate body 113 inside the filter box 111, the replacement assembly 12 is started, the replacement assembly 12 pushes the new filter plate body 113 through the through hole 112 to the inside of the filter box 111, with the movement of the new filter plate body 113, when the new filter plate body 113 abuts against the limiting block 1124, the limiting block 1124 is stressed to make the turnover plate 1123 turn upward, the turnover plate 1123 drives the horizontal plate 1128 to move upward in the process of turning, and the other turnover plate 1123 is also turned upward at the same time, the horizontal plate 1128 compresses the helical spring 1129 in the process of moving upward, when the new filter plate body 113 abuts against the filter plate body 113 inside the filter box 111, the new filter plate body 113 pushes the filter plate body 113 inside the filter box 111 out of the filter box 111, when the new filter plate body 113 is between the two limiting blocks 1124 inside the filter box 111, the helical spring 1129 drives the limiting block 1124 on the turnover plate 1123 to turn downward by the elastic potential energy of itself, and the two limiting blocks 1124 are on the two sides of the new filter plate body 113, so as to complete the replacement of the filter plate body 113.

[0035] The auxiliary filter assembly 10 can preliminarily filter the gas delivered to the filter pressure reducing valve 6, so as to reduce the dust and impurities in the delivered gas, thereby prolonging the maintenance time of the filter pressure reducing valve 6, simplifying the pushing replacement step of the filter plate body 113, relieving the time required for stopping the operation of the device and performing the cumbersome cleaning step due to the filter impurities of the filter pressure reducing valve 6, so as to effectively improve the working efficiency of the device; the auxiliary limiting assembly can limit the position of the filter plate body 113 inside the through hole 112, so as to avoid that the filter plate body 113 inside the through hole 112 is pushed out from the inside of the filter box 111 by uneven air pressure, thereby causing the filter box 111 to leak and failing to filter the gas.

[0036] In embodiment 3, the replacement assembly 12 comprises a containing box 121 arranged on the filter box 111, the containing box 121 is provided with a replacement opening, the replacement opening corresponds to the position of the through hole 112, the containing box 121 is provided with a fixed plate 122, one side of the fixed plate 122 is provided with a door plate, the door plate is rotatably connected to the containing box 121 through a hinge, and the fixed plate 122 is provided with an electric telescopic device 123.

[0037] The output end of the electric telescopic device 123 extends to the inside of the containing box 121 through the fixed plate 122, and the end extending to the inside of the containing box 121 is provided with a push plate 127; the inside of the containing box 121 is provided with a plurality of filter plates to be replaced 124, one side of the plurality of filter plates to be replaced 124 is provided with a top plate 125, the top plate 125 abuts against one filter plate to be replaced 124, one side of the top plate 125 is provided with a fixed spring 126, both ends of the fixed spring 126 are connected to the top plate 125 and one wall surface inside the containing box 121 respectively, one side of the fixed spring 126 is provided with a dustproof folding plate 128, both ends of the dustproof folding plate 128 are connected to the top plate 125 and one wall surface inside the containing box 121 respectively.

[0038] First sliding grooves 13 are arranged on the upper and lower wall surfaces inside the containing box 121, and first sliding blocks are arranged on the upper and lower wall surfaces of the top plate 125; the first sliding blocks are slidably connected in the first sliding grooves 13 respectively, a second sliding groove 14 is arranged on one side of the first sliding groove 13, a plurality of reset springs 15 are arranged in the second sliding groove 14 in sequence from the bottom end, a baffle 16 is inserted in the second sliding groove 14, and inclined openings are arranged at the edge corners of the opposite side wall surfaces of the two baffles 16 and face the door plate; and one side wall surface of the filter plate to be replaced 124 inside the containing box 121 abuts against the baffle 16.

[0039] The baffle 16 is arranged to limit the position of the filter plate to be replaced in the containing box 121. The second sliding groove 14 and the reset spring 15 are arranged to enable the baffle 16 to slide up and down in the second sliding groove 14. The inclined opening on the baffle 16 enables the baffle 16 to shrink into the second sliding groove 14 when it is pushed towards the containing box 121. When the filter plate to be replaced is filled in the containing box 121, the fixed spring 126 is compressed by pushing the top plate 125, and then the side wall of the filter plate to be replaced is pressed against the inclined opening of the two baffles 16 in the containing box 121. The baffle 16 is forced to shrink into the second sliding groove 14 until the filter plate to be replaced is placed in the containing box 121. At this time, the baffle 16 is restored to the initial position by the fixed spring 126, thereby limiting the position of the filter plate to be replaced in the containing box 121. In addition, the first sliding groove 13 and the first sliding block are arranged to guide the horizontal movement of the top plate 125.

[0040] It should be noted that the diameter of the output shaft of the electric telescopic device 123 is equal to the width of the push plate 127, so that when the push plate 127 extends into the filter box 111, the filter plate to be replaced in the containing box 121 can be automatically filled into the position of the filter plate to be replaced in the filter box 111, which can cause the reset of the push plate 127 and the movement of the filter plate to be replaced in the filter box 111 to conflict.

[0041] In this embodiment, when it is necessary to replace the filter plate body 113 in the filter box 111, the electric telescopic device 123 is started, and the push plate 127 is moved by the electric telescopic device 123. When the push plate 127 contacts the filter plate to be replaced on one side, the push plate 127 pushes the filter plate to be replaced towards the opening 112 on the filter box 111, until the filter plate body 113 in the opening 112 is replaced. Then the electric telescopic device 123 is started again to restore the push plate 127 to the initial position. When the push plate 127 is restored to the initial position, the fixed spring 126 pushes the containing box 121 to fill the filter plate to be replaced in the filter box 111.

[0042] It should be noted that the filter plate body 113 includes a fixed frame and a filter core arranged in the fixed frame. The size of the fixed frame is adapted to the size of the opening 112, and the fixed frame and the opposite walls on the left and right sides of the opening 112 are provided with sealing rings. The sealing rings can prevent the air passing through the filter plate body 113 from flowing to the outside from the gap between the filter plate body 113 and the inner wall of the opening 112, thereby affecting the normal use of the device.

[0043] The filter plate body 113 inside the filter box 111 can be replaced by replacing the assembly 12, thereby improving the replacement efficiency of the filter plate body 113 inside the filter box 111.

[0044] The working principle of the present application is as follows: When the sealing performance of the three-way valve body 1 needs to be detected, the air pump 4 is started to inflate the inside of the three-way valve body 1, and the driving gas energy is provided to the pneumatic actuator 2. The gas is filtered and pressurized by the filter pressure reducing valve 6 during the conveying process, and the valve body 7 is pressurized again. Then, the time relay 3 is set to the valve opening and closing time of the pneumatic actuator 2 in the three-way valve body 1, the time relay 3 drives the valve opening and closing in the three-way valve body 1 through the electromagnetic valve, and then the pressure value change in the three-way valve body 1 is observed. When the filter plate body 113 inside the filter box 111 needs to be replaced, the electric telescopic device 123 is started, and the electric telescopic device 123 drives the push plate 127 to move. When the push plate 127 contacts the filter plate 124 to be replaced on one side, the push plate 127 pushes the filter plate 124 to be replaced to the opening 112 on the filter box 111. With the movement of the filter plate 124 to be replaced, when the filter plate 124 to be replaced is pressed against the limiting block 1124, the limiting block 1124 is stressed to make the turnover plate 1123 turn upward. The turnover plate 1123 drives the horizontal plate 1128 to move upward during the turnover process, and the other turnover plate 1123 is also turned upward. The horizontal plate 1128 compresses the spiral spring 1129 during the upward movement. When the filter plate 124 to be replaced is pressed against the filter plate body 113 inside the filter box 111, the filter plate 124 to be replaced pushes the filter plate body 113 inside the filter box 111 out of the filter box 111. When the filter plate 124 to be replaced is between the two limiting blocks 1124 inside the filter box 111, the spiral spring 1129 pushes the limiting block 1124 on the turnover plate 1123 downward by its elastic potential energy, and the two limiting blocks 1124 are on both sides of the filter plate 124 to be replaced. In this way, the replacement of the filter plate body 113 is completed. Then, the electric telescopic device 123 is started again, and the push plate 127 is restored to the initial position. When the push plate 127 is restored to the initial position, the fixed spring 126 pushes the inside of the containing box 121 to the position of the filter plate 124 to be replaced inside the filter box 111 through the top plate 125 to fill it.

[0045] Finally, it should be noted that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements of some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A three-way valve sealing performance testing device, comprising a three-way valve body (1), characterized in that: The three-way valve body (1) is provided with a sealing detection component. The sealing detection component checks the sealing of the three-way valve body (1) by mechanical drive and can check the sealing of the three-way valve body (1) at regular intervals. The sealing detection assembly includes a pneumatic actuator (2), a time relay (3), an air pump (4), a high-pressure pipe (5), a filter pressure reducing valve (6), a pressure reducing valve body (7), a connecting pipe (8), a connector (9), and an auxiliary filter assembly (10). The pneumatic actuator (2) is mounted on the three-way valve body (1) and is connected to the valve inside the three-way valve body (1). The time relay (3) is mounted on the pneumatic actuator (2) and is connected to the pneumatic actuator (2) via an electrical signal. The air pump (4) is mounted on one side of the three-way valve body (1). The filter pressure reducing valve (6) is mounted between the three-way valve body (1) and the air pump (4). The pressure reducing valve body (7) is mounted on one side of the filter pressure reducing valve (6). The auxiliary filter assembly (10) is mounted between the air pump (4) and the filter pressure reducing valve (6).

2. The three-way valve sealing performance testing device according to claim 1, characterized in that: Multiple high-pressure pipes (5) are provided. The two ends of the multiple high-pressure pipes (5) are respectively connected to the air pump (4) and the auxiliary filter assembly (10), the auxiliary filter assembly (10) and the filter pressure reducing valve (6), and the filter pressure reducing valve (6) and the pressure reducing valve body (7). The connecting pipe (8) is connected to the high-pressure pipe (5), and one end of the connecting pipe (8) is located between the pressure reducing valve body (7) and the filter pressure reducing valve (6). The end of the connecting pipe (8) away from the high-pressure pipe (5) is connected to the pneumatic actuator (2). The connector (9) is provided at the end of the high-pressure pipe (5) away from the pressure reducing valve body (7). The connector (9) is connected to the three-way valve body (1). The time relay (3) is provided with a solenoid valve. The solenoid valve is connected to the time relay (3) and the valve inside the three-way valve body (1) through an electrical signal.

3. The three-way valve sealing performance testing device according to claim 2, characterized in that: The auxiliary filtration assembly (10) includes a filter element (11) and a replacement assembly (12). The replacement assembly (12) is disposed on the filter element (11). The filter element (11) includes a filter box (111). The filter box (111) has an opening (112). A filter plate body (113) is disposed inside the opening (112). An auxiliary limiting assembly is disposed at the upper end of the inner side of the opening (112).

4. The three-way valve sealing performance testing device according to claim 3, characterized in that: The auxiliary limiting component includes a receiving groove (1121) opened inside the top of the opening (112). A fixed vertical plate (1122) and a flip plate (1123) are provided inside the receiving groove (1121). There are two flip plates (1123), which are rotatably connected to the two sides of the fixed vertical plate (1122). A limiting block (1124) is provided on the lower end face of the flip plate (1123) away from the fixed vertical plate (1122). The lower end face of the limiting block (1124) extends through the receiving groove (1121) to the inside of the opening (112). The two limiting blocks (1124) are located on both sides of the filter plate body (113). A chamfer is opened at the lower end face of the limiting block (1124) and at the corner opposite to the filter plate body (113).

5. The three-way valve sealing performance testing device according to claim 4, characterized in that: The fixed vertical plate (1122) is provided with a guide groove (1125), and the flip plate (1123) is provided with a fault tolerance opening (1126) on the side wall opposite to the fixed vertical plate (1122). A horizontal plate (1128) is provided between the two flip plates (1123), and the two ends of the horizontal plate (1128) are respectively rotatably connected to the fault tolerance opening (1126) on the two flip plates (1123).

6. The three-way valve sealing performance testing device according to claim 5, characterized in that: A vertical plate body (1127) is provided inside the guide groove (1125). The vertical plate body (1127) passes through the horizontal plate (1128). A helical spring (1129) is sleeved on the vertical plate body (1127). The helical spring (1129) is located above the horizontal plate (1128). The two ends of the helical spring (1129) are respectively connected to the top of the inner side of the guide groove (1125) and the horizontal plate (1128).

7. The three-way valve sealing performance testing device according to claim 6, characterized in that: The replacement component (12) includes a receiving box (121) disposed on the filter box (111). The receiving box (121) has a replacement port, which corresponds to the position of the opening (112). A fixing plate (122) is disposed on the receiving box (121). A door panel is disposed on one side of the fixing plate (122). The door panel is rotatably connected to the receiving box (121) by a hinge. An electric telescopic device (123) is disposed on the fixing plate (122).

8. The three-way valve sealing performance testing device according to claim 7, characterized in that: The output end of the electric telescopic device (123) extends through the fixed plate (122) to the inside of the receiving box (121). A push plate (127) is provided at one end extending to the inside of the receiving box (121). Multiple filter plates (124) to be replaced are provided inside the receiving box (121). A top plate (125) is provided on one side of the multiple filter plates (124) to be replaced. The top plate (125) presses against one filter plate (124) to be replaced. A fixing spring (126) is provided on one side of the top plate (125). The two ends of the fixing spring (126) are respectively connected to the top plate (125) and one wall of the inside of the receiving box (121). A dustproof folding plate (128) is provided on one side of the fixing spring (126). The two ends of the dustproof folding plate (128) are respectively connected to the top plate (125) and one wall of the inside of the receiving box (121).

9. A three-way valve sealing performance testing device according to claim 8, characterized in that: The inner upper and lower walls of the container (121) are provided with first sliding grooves (13), and the upper and lower walls of the top plate (125) are provided with first sliders. The two first sliders are slidably connected in the two first sliding grooves (13). A second sliding groove (14) is provided on one side of the first sliding groove (13). Multiple return springs (15) are sequentially provided at the bottom of the inner side of the second sliding groove (14). A baffle (16) is inserted into the inner side of the second sliding groove (14). The two baffles (16) are provided with inclined openings on the opposite side walls and at the corners facing the door panel. The side wall of the filter plate (124) to be replaced inside the container (121) presses against the baffle (16).

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