Multifunctional valve testing device and use method

Abstract

The invention relates to the technical field of valve detection, and discloses a multifunctional valve testing device and a use method.The multifunctional valve testing device comprises a water tank and a base installed in the middle of the water tank through two platforms, the two platforms are located in the middle of the front side and the middle of the rear side of the base respectively, and the base is provided with annular rails; the annular track is provided with a plurality of sets of fixing bases distributed at equal intervals, the annular track drives the multiple fixing bases to conduct fixed-distance conveying, the fixing bases circularly move around the end face of the base, and the positions of the fixing bases are switched in a reciprocating mode. The annular track can drive the fixed base to conduct fixed-distance conveying, so that the position of the workbench and the position of the multifunctional valve on the workbench can be automatically switched according to a set program. In the testing process, the valve can sequentially pass through a plurality of stations such as air inflation, water entry vibration, bubble detection and air pressure re-detection, the valve does not need to be manually and frequently carried, the testing efficiency is greatly improved, meanwhile, the detection time is prolonged, and the detection result is improved.

Description

Technical Field

[0001] The present invention relates to the field of valve detection technology, and in particular to a multifunctional valve testing device and a use method thereof. Background Art

[0002] In the modern industrial field, valves, as key components of fluid control systems, are widely used in many industries such as petrochemicals, electric power, water supply and drainage, and pharmaceuticals. Their sealing is directly related to the safety and stable operation of the entire system and the effective use of energy. With the continuous development of industrial technology, the requirements for valve quality and performance are becoming increasingly stringent. Therefore, accurate, efficient and comprehensive valve testing technology has become a key link in the production and use of valves.

[0003] Traditional valve testing methods mainly rely on manual operation and have many limitations. For example, in the sealing test, a simple manual clamp is usually used to seal the valve port. This method is difficult to ensure the consistency and reliability of the seal, and it is easy to cause loose sealing or excessive sealing due to human factors, which in turn affects the accuracy of the test results. Moreover, when performing gas filling and pressure monitoring, manual operation is difficult to accurately control the filling volume and pressure changes, and cannot meet the requirements of modern high-precision valve testing.

[0004] When testing the tightness of valves, traditional methods often only use a single detection method, such as only using pressure monitoring to determine whether the valve is leaking. For some small leaks, the air pressure is basically unable to detect them. When testing the tightness in water, the generation and attachment of bubbles have always been an important factor affecting the accuracy of the detection. These bubbles may interfere with the detection personnel's judgment of the valve leakage, resulting in misjudgment or inaccurate detection results. To this end, the present invention provides a multifunctional valve testing device and a method for use. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the present invention provides a multifunctional valve testing device and a method of use to improve the structure of valve sealing testing.

[0006] The present invention provides the following technical solutions: a multifunctional valve testing device, comprising a water tank and a base installed in the middle of the water tank through two platforms, and the two platforms are respectively located in the middle of the front and rear sides of the base, the base is provided with an annular track, and the annular track is provided with a plurality of groups of equally spaced fixed seats, the annular track drives the plurality of fixed seats to perform fixed-distance transportation, and the fixed seats are cyclically moved around the end surface of the base, so that the positions of the fixed seats are switched back and forth; A plurality of groups of guide pillars are installed on each of the fixed seats, and a slidable workbench is provided on the plurality of guide pillars, a supporting side plate and a fixed side plate are installed on the workbench, a valve mold platform located between the supporting side plate and the fixed side plate is installed on the workbench, and a multifunctional valve is placed on the valve mold platform, a slidable movable platform is provided on the workbench, an electric cylinder for pushing the movable platform to slide is installed on the fixed side plate, sealing end sleeves for sealing the multifunctional valve ports are installed on the opposite sides of the fixed side plate and the movable platform, and the two ports of the multifunctional valve are sealed by the two sealing end sleeves; The fixed side plate and the movable platform are provided with a detection system for gas introduction, which introduces gas into the multifunctional valve through the sealing end sleeve to detect its sealing performance; The platform is provided with an inflation module for inputting gas into the detection system, and each detection system passing through is inflated by the inflation module, so that the detection system detects the sealing of the multifunctional valve; A vibration mechanism is provided at the end of the water tank below a workbench, and the vibration mechanism drives the workbench to move up and down on the guide column, so that bubbles attached to the workbench in the water are removed, and bubbles are eliminated for each workbench passing by the vibration mechanism; A plurality of cameras are arranged at the bottom of the base, through which the multifunctional valve below is detected to see whether it leaks in water, and the sealing performance is further detected.

[0007] Preferably, the annular track includes two rotatable transmission shafts arranged at both ends of the base, both ends of the transmission shaft are led out from both sides of the base and are equipped with pulleys, and the pulleys at both ends of the two transmission shafts are driven by a rack belt, and the transmission shaft is driven by a motor, and circulating guide rails are installed at both ends of the base, and several groups of equidistantly distributed slides are provided on the circulating guide rails, and the bottom end of the slide is connected to the rack belt through a bracket, and the fixed seat is installed in an L-shape on the slides at both ends of the base, so that the fixed seat can be transported around the end face of the base.

[0008] Preferably, the detection system includes an air pipe installed on the fixed side panel, and the air pipe passes through the fixed side panel and extends from the middle of the sealing end sleeve. An electric-controlled valve and an air valve are installed on the outer side of the fixed side panel. The two ports of the electric-controlled valve are respectively connected to the air pipe and the air valve through pipelines, so that gas is introduced into the multi-functional valve through the air pipe to detect the sealing performance, and the electric-controlled valve closes the air pipe.

[0009] Preferably, the detection system also includes an air duct installed on the movable table, and the air duct is introduced from the side of the movable table and extends from the middle of the sealing end sleeve, and a pressure gauge is installed on the air duct located on the outside, and the air pressure in the multi-function valve is connected through the air duct, and the sealing is detected by the pressure gauge.

[0010] Preferably, the inflation module includes a mold table arranged on a platform and capable of sliding back and forth, the mold table is driven by a linear motor, two cylindrical slide rails are installed on the top of the mold table, and a slidable moving table is provided on the two cylindrical slide rails, both ends of the two cylindrical slide rails are provided with springs for resetting the moving table, an inflation nozzle is installed on the moving table, the inflation nozzle is connected to the air pump through a pipeline, and the inflation nozzle is docked with the detection system on the workbench by moving the mold table forward, a positioning plate is installed on the moving table, and a corresponding positioning groove is provided on the fixed seat.

[0011] Preferably, the top end of the positioning plate is a V-shaped end, and the two sides inside the positioning groove are inwardly inclined bevel grooves, and the end of the bevel groove is a straight groove introduced by the positioning plate. The V-shaped end on the positioning plate is inserted into the positioning groove, first contacts the bevel of the bevel groove, and as the positioning plate is inserted, the V-shaped end is introduced into the straight groove along the bevel of the bevel groove to calibrate the position of the inflation module.

[0012] Preferably, the vibration mechanism includes a fixed plate seat installed inside the water tank, and electromagnets are installed on two protrusions of the fixed plate seat, and magnets are embedded on the top of the supporting side plate and the fixed side plate. When the electromagnet is energized, the electromagnet and the magnet have the same magnetic pole to generate repulsive force, so that the magnet drives the workbench to move up, and when the electromagnet is de-energized, the workbench moves down under gravity, and this process is repeated to make the workbench shake and shake off the bubbles attached to the workbench.

[0013] Preferably, a heating plate is installed on the fixed plate seat, and the heating plate slightly heats the surrounding water. The water rises after being heated, and the bubbles on the surface of the workbench are eliminated.

[0014] A method for using a multifunctional valve testing device, the specific operations are as follows: S1. The circular track operates indirectly to switch the position of the workbench forward and backward, and the multifunctional valve is placed on the valve mold table on the workbench at the designated position. The movable table is pushed to move by the electric cylinder, so that the sealing end sleeve on the movable table contacts the port of the multifunctional valve, and the other port of the multifunctional valve contacts the sealing end sleeve on the supporting side plate, so that the two sealing end sleeves block and position the two ports of the multifunctional valve; S2, the circular track continues to run, so that the workbench where the multifunctional valve is installed is switched to the inflation module, and the inflation module moves to inflate the detection system on the workbench. When the inflation reaches the specified air pressure, the inflation module is separated from the detection system, and the current air pressure value is detected by the detection system; S3, then the circular track runs to guide the workbench into the water, and the workbench is vibrated under the drive of the vibration mechanism to knock down the bubbles on its surface. The workbench continues to move along the circular track, and the camera is used to detect whether there are bubbles discharged from the workbench after passing through the vibration mechanism. If there are bubbles discharged, it is unqualified, and when the workbench moves out of the water along the circular track, the air pressure value is checked again through the detection system to comprehensively judge the sealing performance of the multi-function valve.

[0015] Compared with the prior art, the present invention has the following beneficial effects: (1) The circular track can drive the fixed seat to transport at a fixed distance, so that the workbench and the multifunctional valve on it can automatically switch positions according to the set program. During the test process, the valve can go through multiple stations such as inflation, water entry vibration, bubble detection and air pressure re-detection in sequence, without the need for manual frequent handling of the valve, which greatly improves the test efficiency, while also extending the test time and improving the test results; (2) The inflatable module is driven by a linear motor to move the die table, and the positioning plate and the positioning slot are cleverly matched to achieve automatic docking with the detection system for inflation. After inflation reaches the specified air pressure, it can automatically detach. The entire process is highly automated, reducing the error and labor intensity of manual operation; (3) The detection system adopts a double-sealed end sleeve structure to seal the two ports of the multi-function valve. At the same time, the gas pipe, gas guide pipe and pressure gauge are used to not only introduce gas into the valve, but also monitor the internal air pressure of the valve in real time. By comparing the air pressure values ​​at different test stages (such as after inflation and after vibration in water), the sealing of the valve can be accurately detected, avoiding the misjudgment that may occur in a single detection method. Combined with underwater bubble detection, the camera at the bottom of the water tank is used to observe whether bubbles are generated after the valve vibrates in water, and the sealing of the valve is further verified from the appearance perspective. This combination of internal and external detection makes the sealing detection more comprehensive and reliable.

[0016] (4) The vibration mechanism uses the interaction between electromagnets and magnets to make the workbench shake up and down, which can effectively shake off the bubbles attached to the surface of the workbench. At the same time, the vibration mechanism is also equipped with a heating plate to heat the surrounding water and use the principle of rising hot water to further eliminate the bubbles on the surface of the workbench. The combination of these two methods can minimize the interference of bubbles on the sealing detection and improve the accuracy of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Fig. 1 is a schematic diagram of the overall structure of the present invention; FIG2 is a schematic diagram of the split structure of the base of the present invention; FIG3 is a schematic diagram of a partial structure of a circular track of the present invention; FIG4 is a schematic diagram of the structure of a workbench and a fixing seat of the present invention; FIG5 is a schematic diagram of the structure of the detection system of the present invention; FIG6 is a schematic diagram of the disassembled structure of the inflation module of the present invention; FIG. 7 is a schematic structural diagram of the vibration mechanism of the present invention.

[0018] In the figure: 1, water tank; 2, platform; 3, base; 4, circular track; 5, fixed seat; 6, guide column; 7, workbench; 8, detection system; 9, support side plate; 10, fixed side plate; 11, valve mold platform; 12, movable platform; 13, sealing end sleeve; 14, vibration mechanism; 15, camera; 16, inflation module; 17, electric cylinder; 41, transmission shaft; 42, pulley; 43, rack belt; 44, circulating guide rail; 45, Slide table; 81, air delivery pipe; 82, electric control valve; 83, valve nozzle; 84, air guide pipe; 85, air pressure gauge; 161, mold table; 162, cylindrical slide rail; 163, moving table; 164, spring; 165, inflation nozzle; 166, positioning plate; 167, positioning groove; 168, V-shaped end; 169, inclined groove; 1610, straight groove; 141, fixed plate seat; 142, electromagnet; 143, magnet; 144, heating plate. DETAILED DESCRIPTION

[0019] In order to make the objectives, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. In order to keep the following description of the embodiments of the present disclosure clear and concise, the present disclosure omits detailed descriptions of known functions and known components to avoid unnecessary confusion of the concepts of the present invention.

[0020] Please refer to Figure 1, a multifunctional valve testing device, which is mainly composed of core components such as a water tank 1, a platform 2, and a base 3. The water tank 1 serves as a container for the test environment and is used to hold the test water. The two platforms 2 are symmetrically installed in the middle of the water tank 1 and located in the middle of the front and rear sides of the base 3, providing support and installation basis for other components of the device. The annular track 4 provided on the base 3 is the key structure for the entire device to realize the multifunctional valve cycle test process, which can drive several groups of equidistantly distributed fixed seats 5 to perform fixed-distance transportation, so that the fixed seats 5 can move cyclically around the end face of the base 3, thereby realizing the orderly switching of the valve test position.

[0021] Referring to FIG. 3 , the annular track 4 is composed of multiple components working together. It includes two rotatable transmission shafts 41 arranged at both ends of the base 3. Both ends of the transmission shaft 41 are led out from both sides of the base 3 and are equipped with pulleys 42. The pulleys 42 at both ends of the two transmission shafts 41 are driven by a rack belt 43. The transmission shaft 41 is driven to rotate by a motor, thereby driving the rack belt 43 to operate. Circulating guide rails 44 are installed at both ends of the base 3. Several groups of equally spaced slides 45 are arranged on the circulating guide rails 44. The bottom end of the slide 45 is connected to the rack belt 43 through a bracket. The fixed seat 5 is installed in an L-shape on the slides 45 at both ends of the base 3. In this way, when the rack belt 43 moves, the slide 45 moves along the circulating guide rail 44, thereby driving the fixed seat 5 to stably transport around the end face of the base 3. For example, after the motor is started, the transmission shaft 41 rotates at a set speed and direction, and the pulley 42 and the rack belt 43 transmit power to the slide 45, so that the fixed seat 5 moves on the circular track 4 at a uniform speed, ensuring the residence time of each test station and the accuracy of the moving process.

[0022] Referring to FIG. 4 , a plurality of guide pillars 6 are mounted on each fixed seat 5, and a slidable workbench 7 is arranged on the guide pillars 6. A supporting side plate 9, a fixed side plate 10 and a valve die plate 11 located therebetween are mounted on the workbench 7. The multifunctional valve is placed on the valve die plate 11, and a slidable movable table 12 is also arranged on the workbench 7. The electric cylinder 17 mounted on the fixed side plate 10 is used to push the movable table 12 to slide. Sealing end sleeves 13 are mounted on the opposite sides of the fixed side plate 10 and the movable table 12. When the electric cylinder 17 is working, it pushes the movable table 12 to move toward the multifunctional valve, so that the sealing end sleeve 13 on the movable table 12 is in close contact with one port of the multifunctional valve, and at the same time, the other port of the multifunctional valve is in contact with the sealing end sleeve 13 on the supporting side plate 9, so as to achieve effective sealing and positioning of the two ports of the multifunctional valve, and create conditions for subsequent sealing detection.

[0023] Referring to FIG5 , the detection system 8 is composed of multiple components. The gas pipe 81 installed on the fixed side plate 10 penetrates the fixed side plate 10 and extends from the middle of the sealing end sleeve 13. The outer side of the fixed side plate 10 is installed with an electric control valve 82 and a valve 83. The two ports of the electric control valve 82 are connected to the gas pipe 81 and the valve 83 through pipelines. The gas can be introduced into the multifunctional valve through the gas pipe 81 to detect the sealing, and the electric control valve 82 can close and control the gas pipe 81, so that the gas is locked in the multifunctional valve, which is convenient for detecting the sealing test.

[0024] In addition, the air guide tube 84 installed on the movable platform 12 is introduced from the side of the movable platform 12 and extends from the middle of the sealing end sleeve 13. A pressure gauge 85 is installed on the air guide tube 84 located on the outside. During the detection process, the gas enters the multifunctional valve through the gas pipe 81, and the air guide tube 84 is connected to the air pressure inside the multifunctional valve. The pressure gauge 85 detects the air pressure value inside the valve in real time, and judges the sealing performance of the multifunctional valve by comparing the air pressure changes before and after inflation and at different test stages. For example, after the inflation module 16 inflates the detection system 8 to the specified air pressure, the detection system 8 is separated from the inflation module 16. At this time, the pressure gauge 85 records the initial air pressure value. After the valve undergoes the underwater vibration test and other processes, the reading of the pressure gauge 85 is checked again. If the air pressure value change is within the allowable range, the valve sealing performance is qualified, otherwise it is unqualified.

[0025] Referring to Fig. 6, the inflation module 16 includes a die table 161 which is arranged on the platform 2 and can slide forward and backward, and is driven by a linear motor. Two cylindrical slide rails 162 are installed on the top of the die table 161, and a slidable moving table 163 is provided on the two cylindrical slide rails 162. Both ends of the cylindrical slide rails 162 are provided with springs 164 for resetting the moving table 163. An inflation nozzle 165 is installed on the moving table 163, and the inflation nozzle 165 is connected to the air pump through a pipeline. When the annular track 4 runs to switch the workbench 7 where the multifunctional valve is installed to the inflation module 16, the die table 161 moves forward under the drive of the linear motor, so that the inflation nozzle 165 is docked with the detection system 8 on the workbench 7.

[0026] The positioning plate 166 installed on the movable table 163 cooperates with the corresponding positioning groove 167 on the fixed seat 5 for position calibration. Specifically, the top of the positioning plate 166 is a V-shaped end 168, and the two sides of the inside of the positioning groove 167 are inclined grooves 169 inclined inwardly, and the end of the inclined groove 169 is a straight groove 1610 introduced by the positioning plate 166. When the V-shaped end 168 on the positioning plate 166 is inserted into the positioning groove 167, it first contacts the inclined surface of the inclined groove 169. With the insertion of the positioning plate 166, the V-shaped end 168 is introduced into the straight groove 1610 along the inclined surface of the inclined groove 169, ensuring that the inflation nozzle 165 is accurately docked with the valve nozzle 83 of the detection system 8, and then the air pump is started to inflate the detection system 8 through the inflation nozzle 165. When the gas is inflated to the specified air pressure, the mold table 161 moves backward and leaves the detection system 8.

[0027] Since the annular track 4 drives the fixed seat 5 to cut off the position, there are small position errors. These may be due to the inability of the inflation module 16 to dock with the detection system 8. Therefore, the position calibration is performed through the positioning plate 166 and the positioning groove 167. During the docking process of the inflation module 16 and the fixed seat 5, the movable platform 163 moves on the cylindrical slide rail 162 to adjust the position. When the inflation module 16 is separated from the fixed seat 5, the spring 164 will drive the movable platform 163 to return to its original position, which is convenient for multiple docking.

[0028] Referring to Figures 2 and 7, the vibration mechanism 14 is located at the end of the inside of the water tank 1 and below a workbench 7. It includes a fixed plate seat 141 installed inside the water tank 1, and electromagnets 142 are installed on the two protrusions of the fixed plate seat 141, and magnets 143 are embedded on the top of the supporting side plate 9 and the fixed side plate 10. When the electromagnet 142 is energized, the electromagnet 142 and the magnet 143 have the same magnetic poles and generate a repulsive force, so that the magnet 143 drives the workbench 7 to move up; when the electromagnet 142 is de-energized, the workbench 7 moves down under the action of gravity. Repeated power on and off in this way causes the workbench 7 to shake, and the bubbles attached to the workbench 7 are shaken off.

[0029] In addition, the heating plate 144 installed on the fixed plate seat 141 can slightly heat the surrounding water. After the water is heated, it will rise, the thermal motion of the water molecules will be enhanced, and the interaction force will be weakened, resulting in a decrease in the stability of the bubbles, which will gradually disappear, and further eliminate the bubbles on the surface of the workbench 7. For example, when the workbench 7 moves to the top of the vibration mechanism 14 along the annular track 4, the power-on and power-off control program of the electromagnet 142 is started, and the vibration operation is performed according to the set frequency and duration. At the same time, the heating plate 144 works, so that the bubbles on the surface of the workbench 7 can be more thoroughly removed, so that the camera 15 can be used to accurately detect whether the valve is leaking.

[0030] A plurality of cameras 15 are provided at the bottom of the base 3. When the workbench 7 moves with the circular track 4 through the vibration mechanism 14, the camera 15 detects whether there are bubbles in the water from the multifunctional valve below. If there are bubbles, it indicates that the valve may be leaking and is judged to be unqualified. And when the workbench 7 moves out of the water with the circular track 4, the air pressure value is checked again by the detection system 8, and the sealing of the multifunctional valve is finally determined by combining the bubble detection results in the water and the change of the air pressure value. For example, if the camera 15 does not detect bubbles in the water, and the air pressure value of the detection system 8 after moving out of the water changes within the allowable small range compared with the initial value, it can be judged that the sealing of the multifunctional valve is good; if there are bubbles in the water or the air pressure value changes beyond the allowable range, the sealing of the valve is judged to be unqualified.

[0031] A method for using a multifunctional valve testing device is as follows: Valve placement and sealing: The annular track 4 operates indirectly to switch the position of the workbench 7 forward and backward, and place the multifunctional valve on the valve mold table 11 on the workbench 7 at the designated position. Then the movable table 12 is pushed to move by the electric cylinder 17, so that the sealing end sleeve 13 on the movable table 12 contacts the port of the multifunctional valve, and the other port of the multifunctional valve contacts the sealing end sleeve 13 on the supporting side plate 9, so that the two sealing end sleeves 13 block and position the two ports of the multifunctional valve.

[0032] Inflation detection: The circular track 4 continues to run, so that the workbench 7 where the multifunctional valve is installed is switched to the inflation module 16. The inflation module 16 moves to inflate the detection system 8 on the workbench 7. When the air is inflated to the specified air pressure, the inflation module 16 is separated from the detection system 8, and the current air pressure value is detected and recorded by the detection system 8.

[0033] Vibration and comprehensive testing in water: Then the circular track 4 runs to guide the workbench 7 into the water. Driven by the vibration mechanism 14, the workbench 7 vibrates to knock down the bubbles on its surface. The workbench 7 continues to move with the circular track 4, and the camera 15 detects whether there are bubbles exported from the workbench 7 after passing through the vibration mechanism 14. If there are bubbles, it is unqualified. After the workbench 7 moves out of the water with the circular track 4, the air pressure value is checked again through the detection system 8 to comprehensively judge the sealing performance of the multifunctional valve. If there are no bubbles in the water and the air pressure value changes within the qualified range, the sealing performance of the multifunctional valve is qualified; if bubbles appear or the air pressure value changes abnormally, it is judged as unqualified, thereby completing the testing process of the entire multifunctional valve.

[0034] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A multifunctional valve testing device, characterized in that: The invention comprises a water tank (1) and a base (3) installed in the middle of the water tank (1) via two platforms (2), wherein the two platforms (2) are respectively located in the middle of the front and rear sides of the base (3), wherein the base (3) is provided with an annular track (4), wherein the annular track (4) is provided with a plurality of groups of equally spaced fixed seats (5), wherein the annular track (4) drives the plurality of fixed seats (5) to perform fixed-distance transportation, and the fixed seats (5) cyclically move around the end surface of the base (3), so that the positions of the fixed seats (5) are switched back and forth; A plurality of groups of guide pillars (6) are mounted on each of the fixed seats (5), and a slidable workbench (7) is mounted on the plurality of guide pillars (6), a supporting side plate (9) and a fixed side plate (10) are mounted on the workbench (7), a valve die plate (11) located between the supporting side plate (9) and the fixed side plate (10) is mounted on the workbench (7), and a multifunctional valve is placed on the valve die plate (11), a slidable movable table (12) is mounted on the workbench (7), an electric cylinder (17) for pushing the movable table (12) to slide is mounted on the fixed side plate (10), and sealing end sleeves (13) for sealing the ports of the multifunctional valve are mounted on opposite sides of the fixed side plate (10) and the movable table (12), and the two ports of the multifunctional valve are sealed by the two sealing end sleeves (13); The fixed side plate (10) and the movable platform (12) are provided with a detection system (8) for introducing gas, and the detection system (8) introduces gas into the multifunctional valve through the sealing end sleeve (13) to detect its sealing performance; The platform (2) is provided with an inflation module (16) for inputting gas into the detection system (8), and each detection system (8) passing through is inflated by the inflation module (16), so that the detection system (8) can detect the sealing performance of the multifunctional valve; A vibration mechanism (14) located below a workbench (7) is provided at the end of the water tank (1), and the vibration mechanism (14) drives the workbench (7) to move up and down on the guide column (6) so that bubbles attached to the workbench (7) in the water are removed, and bubbles are eliminated for each workbench (7) passing through by the vibration mechanism (14); A plurality of groups of cameras (15) are provided at the bottom of the base (3), and the cameras (15) are used to detect whether the multifunctional valve below is leaking in water, and further detect the sealing performance.

2. A multifunctional valve testing device according to claim 1, characterized in that: The annular track (4) comprises two rotatable transmission shafts (41) arranged at both ends of the base (3), the two ends of the transmission shaft (41) are led out from both sides of the base (3) and are installed with pulleys (42), and the pulleys (42) at both ends of the two transmission shafts (41) are driven by a rack belt (43), the transmission shaft (41) is driven by a motor, and circulating guide rails (44) are installed at both ends of the base (3), and a plurality of groups of equally spaced slides (45) are provided on the circulating guide rails (44), and the bottom ends of the slides (45) are connected to the rack belt (43) through brackets, and the fixed seat (5) is installed in an L-shape on the slides (45) at both ends of the base (3), so that the fixed seat (5) is transported around the end surface of the base (3).

3. A multifunctional valve testing device according to claim 1, characterized in that: The detection system (8) comprises an air delivery pipe (81) installed on the fixed side plate (10), and the air delivery pipe (81) passes through the fixed side plate (10) and extends from the middle of the sealing end sleeve (13). An electric control valve (82) and an air valve (83) are installed on the outer side surface of the fixed side plate (10). Two ports of the electric control valve (82) are respectively connected to the air delivery pipe (81) and the air valve (83) through pipelines, so that gas is introduced into the multifunctional valve through the air delivery pipe (81) to detect the sealing property, and the electric control valve (82) closes the air delivery pipe (81).

4. A multifunctional valve testing device according to claim 3, characterized in that: The detection system (8) further comprises an air guide tube (84) mounted on the movable platform (12), wherein the air guide tube (84) is introduced from the side of the movable platform (12) and extends out from the middle of the sealing end sleeve (13), and a pressure gauge (85) is mounted on the outer air guide tube (84), and the air pressure in the multifunctional valve is connected via the air guide tube (84), and the sealing performance is detected via the pressure gauge (85).

5. A multifunctional valve testing device according to claim 1, characterized in that: The inflation module (16) comprises a die table (161) arranged on the platform (2) and capable of sliding forward and backward. The die table (161) is driven by a linear motor. Two cylindrical slide rails (162) are installed on the top of the die table (161), and a slidable moving table (163) is provided on the two cylindrical slide rails (162). Both ends of the two cylindrical slide rails (162) are provided with springs (164) for resetting the moving table (163). An inflation nozzle (165) is installed on the moving table (163). The inflation nozzle (165) is connected to an air pump via a pipeline. The die table (161) is moved forward so that the inflation nozzle (165) is docked with a detection system (8) on the workbench (7). A positioning plate (166) is installed on the moving table (163), and a corresponding positioning groove (167) is provided on the fixed seat (5).

6. A multifunctional valve testing device according to claim 5, characterized in that: The top of the positioning plate (166) is a V-shaped end (168), and the two sides of the interior of the positioning groove (167) are inwardly inclined inclined grooves (169), and the end of the inclined groove (169) is a straight groove (1610) introduced by the positioning plate (166). The V-shaped end (168) on the positioning plate (166) is inserted into the positioning groove (167) and contacts the inclined surface of the inclined groove (169) first. As the positioning plate (166) is inserted, the V-shaped end (168) is introduced into the straight groove (1610) along the inclined surface of the inclined groove (169), thereby calibrating the position of the inflation module (16).

7. A multifunctional valve testing device according to claim 1, characterized in that: The vibration mechanism (14) comprises a fixed plate seat (141) installed inside the water tank (1), and electromagnets (142) are installed on two protrusions of the fixed plate seat (141), and magnets (143) are embedded on the top of the supporting side plate (9) and the fixed side plate (10). When the electromagnet (142) is energized, the electromagnet (142) and the magnet (143) have the same magnetic poles to generate a repulsive force, so that the magnet (143) drives the workbench (7) to move upward. When the electromagnet (142) is de-energized, the workbench (7) moves downward under gravity. This is repeated, so that the workbench (7) shakes and bubbles attached to the workbench (7) are shaken off.

8. A multifunctional valve testing device according to claim 7, characterized in that: A heating plate (144) is mounted on the fixed plate seat (141). The heating plate (144) slightly heats the surrounding water. The water rises after being heated, thereby eliminating bubbles on the surface of the workbench (7).

9. A method for using a multifunctional valve testing device, characterized in that: Using a multifunctional valve testing device as described in any one of claims 1 to 8, the specific operations are as follows: S1, the annular track (4) is operated indirectly to switch the position of the workbench (7) forward and backward, and the multifunctional valve is placed on the valve mold table (11) on the workbench (7) at the designated position. The movable table (12) is pushed to move by the electric cylinder (17), so that the sealing end sleeve (13) on the movable table (12) contacts the port of the multifunctional valve, and the other port of the multifunctional valve contacts the sealing end sleeve (13) on the supporting side plate (9), so that the two sealing end sleeves (13) block and position the two ports of the multifunctional valve; S2, the circular track (4) continues to run, so that the workbench (7) on which the multifunctional valve is installed is switched to the inflation module (16), and the inflation module (16) moves to inflate the detection system (8) on the workbench (7). When the gas is inflated to a specified pressure, the inflation module (16) is separated from the detection system (8), and the current gas pressure value is detected by the detection system (8); S3, the circular track (4) is then operated to guide the workbench (7) into the water. The workbench (7) is vibrated under the drive of the vibration mechanism (14) to knock down bubbles on the surface of the workbench (7). The workbench (7) continues to move along the circular track (4). The camera (15) is used to detect whether bubbles are discharged from the workbench (7) after passing through the vibration mechanism (14). If bubbles are discharged, the workbench (7) is unqualified. After the workbench (7) is moved out of the water along the circular track (4), the air pressure value is checked again by the detection system (8) to comprehensively judge the sealing performance of the multifunctional valve.

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