A valve airtight detection device

Abstract

The present invention discloses a valve airtightness detection device, belonging to the technical field of valves. The valve airtightness detection device includes a detection platform, and a dynamic pressure simulation mechanism for simulating the dynamic load change of the valve during actual use is rotatably connected to the center of the bottom end of the detection tooling. An automatic transportation and detection mechanism for feeding the valves into the detection system one by one according to a set rhythm is arranged at the bottom of the dynamic pressure simulation mechanism, which reduces the manual operation time and intervention. By adopting the dynamic pressure simulation mechanism and the automatic transportation and detection mechanism, the present invention can maintain efficient and stable airtightness detection, ensure that the airtightness detection device can operate continuously and stably, reduce the manual operation time and intervention, make the whole detection process more smooth and efficient. At the same time, it simulates the frequent pressure fluctuations experienced by the valve and other seals in actual applications, ensures that the detection results are more representative, and improves the detection ability for leakage problems.

Description

Technical Field

[0001] The present invention belongs to the technical field of valves, and particularly relates to a valve airtightness detection device. Background Art

[0002] Valves play a crucial role in pipeline systems. Especially in situations involving high pressure, high temperature, flammable, explosive, or toxic gases, airtightness detection can ensure that valves do not cause safety accidents due to leakage during operation. In the industrial field, especially in industries such as petroleum, natural gas, and power, the airtightness of valves directly affects the stability of the entire system. Through airtightness detection, product quality can be guaranteed, and failures or losses caused by poor valve sealing can be avoided. Poor valve sealing may lead to the leakage of harmful gases, causing environmental pollution. Airtightness detection helps reduce such risks and protect the environment. By regularly detecting the sealing performance of valves, potential problems can be detected early, the failure rate can be reduced, and the service life of equipment can be extended.

[0003] When currently detecting the airtightness of valves, it is necessary to manually place the valve into the detection tooling. Under the push of a cylinder, after the detection tooling presses the valve tightly, the airtightness detector inflates and pressurizes the valve in the detection tooling through an air pipe to detect the airtightness of the valve. However, in practical applications, the valves often face not a constant pressure, but pressure fluctuations or periodic changes. For example, the flow of fluid in the pipeline, the start / stop of pumps, and the water hammer effect, etc., will all cause rapid pressure fluctuations in the pipeline. Pressure fluctuations and vibrations may cause tiny displacements or changes in the sealing surface of the valve, which may not be simulated or fully reflected during airtightness detection, resulting in the detection result not being completely consistent with the sealing performance under actual working conditions. Therefore, the airtightness detector cannot accurately simulate the influence of the water hammer effect on the valve sealing performance through inflation and pressurization, which may lead to a large difference between the test result and the actual use situation. Moreover, when detecting valves, it is necessary to manually detect the airtightness of each valve one by one, and manually detecting each valve one by one requires a lot of time. Especially in the case of a large production scale and a large number of valves, this method will be extremely inefficient and increase the overall detection time. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the above-mentioned disadvantages of the prior art and provide a valve airtightness detection device.

[0005] The technical solution adopted to solve the above technical problems is as follows: A valve airtightness detection device includes a detection platform. On one side of the detection platform, there is a guide platform welded and inclined. On the surface of the top end of the detection platform, away from the guide platform, there is a fixed frame. On the top of the fixed frame, there is a flat plate for limiting and fixing the valve. At the center of the bottom surface of the flat plate, there is a detection tooling. At the center of the bottom end of the detection tooling, there is a dynamic pressure simulation mechanism rotatably connected for simulating the dynamic load change of the valve during actual use. At the bottom of the dynamic pressure simulation mechanism, there is an automatic transportation and detection mechanism for feeding the valves into the detection system one by one according to a set rhythm, reducing manual operation time and intervention.

[0006] Through the above technical solution, the valves can be automatically fed into the detection system one by one according to a predetermined rhythm, reducing the time and intervention of manual operation, making the whole detection process smoother and more efficient. At the same time, it can better simulate the airtightness conditions in actual use, especially the pressure fluctuations and motion states that the valve will withstand during actual operation.

[0007] Further, the dynamic pressure simulation mechanism includes a first wedge rod and a second wedge rod fixedly connected by a connecting rod, and the connecting rod, the first wedge rod and the second wedge rod are arranged in a Z-shaped structure. At the top of the first wedge rod, there is a fan fixedly connected to the center of the bottom end of the detection tooling.

[0008] Through the above technical solution, it helps the air flow to change periodically inside the valve, enabling the whole detection process to quickly adapt to and reflect the influence of pressure fluctuations on the sealing performance, improving the efficiency and accuracy of the detection.

[0009] Further, the automatic transportation and detection mechanism includes two first limiting strips arranged horizontally and a second limiting strip arranged vertically. The first limiting strips and the second limiting strip are respectively fixedly connected to the surface of the top end of the detection platform. There is a through chute between the second limiting strip and the detection platform. Inside the chute, there are two L-shaped sliding blocks slidably connected to the second limiting strip.

[0010] Further, the connecting rod is sleeved with a sleeve, and the first wedge rod and the second wedge rod respectively limit the sleeve. On one side of the sleeve, there is an inclined fixed plate welded. On the side of the fixed plate away from the sleeve, there is a rotating rod rotatably connected. One end of the rotating rod is spherical. The spherical end of the rotating rod is inside the fixed plate, and the spherical center end of the rotating rod rotates universally with the fixed plate. The end of the rotating rod away from the fixed plate is rotatably connected to a sleeve plate through which the second wedge rod passes and slides, and the sleeve plate laterally limits the rotating rod.

[0011] Through the above technical solution, it can automatically process a large number of valves for airtightness detection, reducing the labor intensity of manual work and improving the safety and comfort of the working environment.

[0012] Furthermore, the second limiting strip laterally limits the L-shaped slider. A rotating member is rotatably connected to the bottom surface of the detection platform near the guide platform. The two long ends of the rotating member are rotatably connected to mirror-image connecting plates, and a Z-shaped structure is formed between the two connecting plates and the rotating member. One end of the connecting plate away from the rotating member is rotatably connected to the L-shaped slider, and a synchronous belt assembly is arranged on the side of the rotating member away from the connecting plate.

[0013] Furthermore, one synchronous pulley in the synchronous belt assembly is fixedly connected to the rotating member, and the other synchronous pulley in the synchronous belt assembly is rotatably connected to the detection platform. A motor is installed at the bottom of the detection platform on the side away from the guide platform. The output end of the motor is slidably connected through the detection platform, and the penetrating end of the motor is fixedly connected through one synchronous pulley in the synchronous belt assembly away from the rotating member.

[0014] Through the above technical solution, it avoids the missed detection or incorrect detection caused by the valve not correctly entering the detection tooling due to non-standard manual operation.

[0015] Furthermore, the penetrating end of the motor is fixedly connected to a rotating plate rotatably connected to the top surface of the detection platform, and the penetrating end of the motor is fixedly connected to the center of the motor. One end of the rotating plate is rotatably connected to a connecting plate, and the other end of the connecting plate is rotatably connected to a sliding table that is limited and slides by the first limiting strip.

[0016] Furthermore, two rectangular sliders are limited and slide on the top of the sliding table. One side of the rectangular slider is fixedly connected to a sliding rod that is limited and slides by the L-shaped slider. The bottom of the sliding rod is provided with a sliding platform fixedly connected to the top surface of the detection platform. The two sides of the sliding platform are respectively engaged with the first limiting strip and the second limiting strip. A rubber pad is installed on the top surface of the sliding platform near the second limiting strip. An exhaust hole communicating with the bottom of the detection platform is formed through the center of the sliding platform and the rubber pad, and an exhaust pipe is installed at the exhaust hole at the bottom of the detection platform.

[0017] Furthermore, a plurality of U-shaped frames arranged linearly at equal intervals are fixedly connected to the top of the sliding rod. Two hinged clamping plates are arranged on one side of the U-shaped frame, and the clamping plates are made of semi-circular rubber anti-slip material. Spring rods are slidably penetrated through both sides of the top of the U-shaped frame, and the springs in the spring rods are fixedly connected to the side walls of the U-shaped frame. One end of the spring rod close to the clamping plate is spherical. A spherical seat is fixedly connected to the side of the clamping plate facing the U-shaped frame. The spherical end of the spring rod is rotatably connected to the spherical seat in a universal manner, and the spherical end of the spring rod is located inside the spherical seat.

[0018] Through the above technical solutions, valves of different specifications or types can be quickly switched without long-term shutdown or adjustment, improving the overall efficiency of the production line. At the same time, the continuity of the detection process ensures that there is almost no downtime for the production line, enabling the airtight detection device to complete the detection of a large number of valves in a short time and improving the overall production capacity.

[0019] Furthermore, an airtight detector is installed at the center of the top surface of the fixing frame. The airtight detector is connected to the detection tooling through a trachea that penetrates and is fixed to the flat plate. At the same time, cylinders fixedly installed with the fixing frame are respectively arranged on both sides of the airtight detector. The telescopic end of the cylinder is slidably connected through the fixing frame, and the penetrating end of the cylinder is fixedly connected to the flat plate. At the same time, the flat plate is slidably connected through the fixing frame.

[0020] The beneficial effects of the present invention are as follows: (1) By adopting a dynamic pressure simulation mechanism in the present invention, after the airtight detector operates and inputs air into the detection tooling through the trachea, it drives the fan to rotate, and then drives the first wedge rod, the connecting rod, and the second wedge rod to rotate. When the first wedge rod, the connecting rod, and the second wedge rod rotate, due to the Z-shaped structure formed among the first wedge rod, the connecting rod, and the second wedge rod, the fixing plate on one side of the sleeve can be driven to perform an elliptical cyclic swing, thereby driving the bottom rotating rod to move up and down cyclically. At the same time, relative rotation occurs between the rotating rod and the fixing plate, enabling the sleeve plate to move up and down cyclically on the second wedge rod, simulating pressure fluctuations and vibrations. The movement of the sleeve plate can simulate the dynamic working conditions of the valve under the fluid flow in the pipeline or the water hammer effect, thereby evaluating the sealing performance of the valve under dynamic pressure and vibration conditions, ensuring its reliability under actual working conditions, and helping to detect minute leaks caused by uneven, deformed, or aged valve sealing surfaces;

[0021] (2) By adopting an automatic transportation and detection mechanism in the present invention, the motor operates to drive the synchronous belt assembly for transmission, and at the same time drives the rotating member and the rotating plate to rotate. When the rotating member rotates, it drives the two connecting plates on both sides to rotate with the connection point of the rotating member as the origin. At the same time, relative rotation occurs between the connecting plate and the rotating member, so that the two connecting plates pull or push the two L-shaped sliders to perform a reciprocating motion of approaching and separating in the chute. When the L-shaped slider moves, the sliding rod moves synchronously with the L-shaped slider, and the rectangular slider fixedly connected to the other end of the sliding rod slides reciprocally in the approaching or separating direction on the sliding table;

[0022] When the rotating plate rotates, while driving the connecting plate to rotate, the connecting plate and the sliding table rotate relative to each other, thereby causing the sliding table to move back and forth in a cyclic manner on the first limiting strip. Furthermore, under the cooperation of the rotating plate and the rotating part, the sliding rod performs a continuous progressive clamping and moving process. The staff can place the valves one by one on the end of the sliding platform far from the second limiting strip. The sliding rod performs a continuous progressive clamping and moving process, causing the clamping plates on both sides of the top of the detection platform to perform a clamping and moving process, clamping the valves one by one and moving them towards the detection tooling direction. In a continuous progressive manner, the valves are accurately sent to the detection position, avoiding the deviation or misalignment of the valves during the feeding process, ensuring the accurate position of the valves during the airtight detection process, and helping to improve the accuracy and consistency of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is the schematic plan view of the present invention;

[0024] Figure 2 is the schematic first perspective view of the present invention;

[0025] Figure 3 is the schematic view of the connection structure between the dynamic pressure simulation mechanism and the detection tooling of the present invention;

[0026] Figure 4 is the schematic first perspective view of the dynamic pressure simulation mechanism of the present invention;

[0027] Figure 5 is the schematic second perspective view of the dynamic pressure simulation mechanism of the present invention;

[0028] Figure 6 is the exploded view of the dynamic pressure simulation mechanism of the present invention;

[0029] Figure 7 is the schematic second perspective view of the present invention;

[0030] Figure 8 is Figure 7 the enlarged schematic view of part A of

[0031] Figure 9 is the schematic third perspective view of the present invention;

[0032] Figure 10 is the schematic fourth perspective view of the present invention;

[0033] Figure 11 is Figure 10 the enlarged schematic view of part B of

[0034] Reference numerals: 11, detection platform; 12, guide table; 13, fixing frame; 14, exhaust pipe; 15, cylinder; 16, flat plate; 17, detection tooling; 18, rubber pad; 19, airtight detector; 2, automatic transportation and detection mechanism; 21, sliding platform; 22, first limiting strip; 23, second limiting strip; 24, sliding table; 25, rectangular slider; 26, connecting plate; 27, rotating plate; 28, sliding rod; 29, U-shaped frame; 210, spring rod; 211, clamping plate; 212, spherical seat; 213, L-shaped slider; 214, connecting plate; 215, rotating member; 216, synchronous belt assembly; 217, motor; 218, chute; 3, dynamic pressure simulation mechanism; 31, fan; 32, first wedge rod; 33, connecting rod; 34, second wedge rod; 35, sleeve; 36, fixing plate; 37, rotating rod; 38, sleeve plate. Detailed implementation manners

[0035] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] As Figures 1 - 3 shown, a valve airtight detection device includes a detection platform 11. A guide table 12 which is inclined is welded to one side of the detection platform 11. A fixing frame 13 is fixedly connected to the surface of the top of the detection platform 11 away from the guide table 12. A flat plate 16 for limiting and fixing the valve is installed on the top of the fixing frame 13. An airtight detector 19 is installed at the center of the surface of the top of the fixing frame 13. The airtight detector 19 is communicated with the detection tooling 17 through a trachea after passing through and fixing the flat plate 16, which can automatically send valves into the detection system one by one according to a predetermined rhythm, reduce the time and intervention of manual operation, and make the whole detection process smoother and more efficient. At the same time, it can better simulate the airtightness conditions in actual use, especially the pressure fluctuations and motion states that the valve will bear during actual operation. At the same time, cylinders 15 fixedly installed with the fixing frame 13 are respectively arranged on both sides of the airtight detector 19. The telescopic ends of the cylinders 15 are slidably connected through the fixing frame 13, and the penetrating ends of the cylinders 15 are fixedly connected to the flat plate 16. At the same time, the flat plate 16 is slidably connected through the fixing frame 13.

[0037] As Figures 2 - 6As shown, a detection tooling 17 is installed at the center of the bottom surface of the flat plate 16, and a dynamic pressure simulation mechanism 3 for simulating the dynamic load change of the valve during actual use is rotatably connected to the center of the bottom end of the detection tooling 17. The dynamic pressure simulation mechanism 3 includes a first wedge-shaped rod 32 and a second wedge-shaped rod 34 fixedly connected through a connecting rod 33. A sleeve 35 is sleeved on the connecting rod 33, and the first wedge-shaped rod 32 and the second wedge-shaped rod 34 respectively limit the sleeve 35. One side of the sleeve 35 is welded with an inclined fixed plate 36 to help the air flow change periodically in the valve, so that the whole detection process can quickly adapt to and reflect the influence of pressure fluctuation on the sealing performance, improving the detection efficiency and accuracy. A rotating rod 37 is rotatably connected to the side of the fixed plate 36 away from the sleeve 35, and one end of the rotating rod 37 is spherical. The spherical end of the rotating rod 37 is located inside the fixed plate 36, and the spherical center end of the rotating rod 37 is universally rotatable with the fixed plate 36. The end of the rotating rod 37 away from the fixed plate 36 is rotatably connected to a sleeve plate 38 that passes through and slides with the second wedge-shaped rod 34, and the sleeve plate 38 laterally limits the rotating rod 37. The connecting rod 33, the first wedge-shaped rod 32 and the second wedge-shaped rod 34 are arranged in a Z-shaped structure. The top end of the first wedge-shaped rod 32 is fixedly connected to a fan 31 that is rotatably connected to the center of the bottom end of the detection tooling 17.

[0038] As Figures 1 - 11As shown, at the bottom of the dynamic pressure simulation mechanism 3, there is an automatic transportation and detection mechanism 2 for feeding valves into the detection system one by one according to a set rhythm, reducing manual operation time and intervention. The automatic transportation and detection mechanism 2 includes two first limiting strips 22 arranged horizontally and a second limiting strip 23 arranged vertically. The second limiting strip 23 provides lateral limitation to the L-shaped slider 213. At the bottom surface of the detection platform 11 near the guide table 12, a rotating member 215 is rotatably connected. At the two long ends of the rotating member 215, mirror-image connecting plates 214 are rotatably connected. When the two connecting plates 214 rotate and are in a straight line, they do not intersect and do not cause movement interference. And the two connecting plates 214 and the rotating member 215 are arranged in a Z-shaped structure. The end of the connecting plate 214 away from the rotating member 215 is rotatably connected to the L-shaped slider 213. On the side of the rotating member 215 away from the connecting plate 214, a synchronous belt assembly 216 is provided. One synchronous wheel in the synchronous belt assembly 216 is fixedly connected to the rotating member 215, and the other synchronous wheel in the synchronous belt assembly 216 is rotatably connected to the detection platform 11. At the bottom of the detection platform 11 away from the guide table 12, a motor 217 is installed. By using a controller in the prior art, the cooperation among the cylinder 15, the airtight detector 19, and the motor 217 is controlled to realize the automatic detection process of the valves. The penetrating end of the motor 217 is fixedly connected to a rotating plate 27 rotatably connected to the top surface of the detection platform 11, and the penetrating end of the motor 217 is fixedly connected to the center of the motor 217. One end of the rotating plate 27 is rotatably connected to a connecting plate 26. When the rotating plate 27 rotates and forms a 90-degree angle with the first limiting strip 22, the rotating plate 27 does not intersect with the first limiting strip 22. Therefore, when the rotating plate 27 rotates, the first limiting strip 22 does not obstruct the rotating plate 27. And the other end of the connecting plate 26 is rotatably connected to a sliding table 24 that is limited and slides on the first limiting strip 22. On the top of the sliding table 24, two rectangular sliders 25 are limited and slide. One side of the rectangular slider 25 is fixedly connected to a sliding rod 28 that is limited and slides on the L-shaped slider 213. At the top of the sliding rod 28, a number of U-shaped frames 29 are fixedly connected in linear equal intervals. On one side of the U-shaped frame 29, two hinged clamping plates 211 are provided, and the clamping plates 211 are made of semi-circular rubber anti-slip material. On both sides of the top of the U-shaped frame 29, a spring rod 210 is inserted and slides. And the spring in the spring rod 210 is fixedly connected to the side wall of the U-shaped frame 29. The end of the spring rod 210 near the clamping plate 211 is spherical. It can automatically process a large number of valves for airtightness detection, reduce the manual labor intensity, and improve the safety and comfort of the working environment. The clamping plate 211 is fixedly connected to a spherical seat 212 on the side facing the U-shaped frame 29. When the two clamping plates 211 on both sides of the top of the detection platform 11 clamp the valve, the two clamping plates 211 rotate relative to each other under the action of the hinge. And when the clamping plates 211 on both sides of the top of the detection platform 11 clamp valves of different specifications and sizes, the spring rod 210 contracts to different degrees, so as to adapt to valves of different specifications and sizes.The versatility of the device is improved. The spherical end of the spring rod 210 is rotatably connected to the spherical seat 212 in a universal manner, and the spherical end of the spring rod 210 is located inside the spherical seat 212. A sliding platform 21 fixedly connected to the top surface of the detection platform 11 is provided at the bottom of the sliding rod 28, and both sides of the sliding platform 21 are engaged with the first limiting strip 22 and the second limiting strip 23 respectively.,

[0039] As Figures 2 - 11 shown, a rubber pad 18 is installed on the top surface of the sliding platform 21 on the side close to the second limiting strip 23. An exhaust hole communicating with the bottom of the detection platform 11 is opened through the center of the sliding platform 21 and the rubber pad 18, and an exhaust pipe 14 is installed at the exhaust hole at the bottom of the detection platform 11, avoiding missed inspections or incorrect detections caused by the valve not correctly entering the detection tooling 17 due to non-standard manual operations. The output end of the motor 217 is slidably connected through the detection platform 11, and the penetrating end of the motor 217 is fixedly connected through a synchronous pulley in the synchronous belt assembly 216 away from the rotating member 215. The first limiting strip 22 and the second limiting strip 23 are respectively fixedly connected to the top surface of the detection platform 11. A chute 218 is opened through between the second limiting strip 23 and the detection platform 11, enabling valves of different specifications or types to be quickly switched without long-term shutdown or adjustment, improving the overall efficiency of the production line. At the same time, the continuity of the detection process ensures that there is almost no stagnation time in the production line, enabling the airtight detection device to complete the detection of a large number of valves in a short time and enhancing the overall production capacity. Two L-shaped sliders 213 slidably connected to the second limiting strip 23 are provided in the chute 218.,

[0040] The working principle of this embodiment is as follows. First, one end of the exhaust pipe 14 at the bottom of the detection platform 11 is placed in the water tank, and then the motor 217 operates to drive the synchronous belt assembly 216 to transmit power, simultaneously driving the rotating member 215 and the rotating plate 27 to rotate. When the rotating member 215 rotates, it drives the two connecting plates 214 on both sides to rotate with the connection point of the rotating member 215 as the origin. At the same time, a relative rotation occurs between the connecting plate 214 and the rotating member 215, so that the two connecting plates 214 pull or push the two L-shaped sliders 213 to perform a reciprocating motion of approaching and separating in the chute 218. When the L-shaped slider 213 moves, the sliding rod 28 moves synchronously with the L-shaped slider 213, and the rectangular slider 25 fixedly connected to the other end of the sliding rod 28 reciprocally slides towards or away from each other on the sliding table 24.,

[0041] When the rotating plate 27 rotates, while driving the connecting plate 26 to rotate, the connecting plate 26 and the sliding table 24 rotate relative to each other, thereby causing the sliding table 24 to move back and forth in a cyclic manner on the first limiting strip 22. Furthermore, under the cooperation of the rotating plate 27 and the rotating member 215, the sliding rod 28 performs a continuous progressive clamping and moving process. The staff can place the valves one by one on the end of the sliding platform 21 away from the second limiting strip 23. The sliding rod 28 performs a continuous progressive clamping and moving process, causing the clamping plates 211 on both sides of the top of the detection platform 11 to perform a clamping and moving process, and clamping the valves one by one and moving them in the direction of the detection tooling 17.

[0042] When the valve moves to the bottom of the detection tooling 17, the motor 217 stops running, so that the clamping plates 211 perform detection while clamping and limiting the valve. Then the air cylinder 15 runs to drive the flat plate 16 to move downward, so that the detection tooling 17 presses the valve. The dynamic pressure simulation mechanism 3 is located inside the valve. Then, when the airtight detector 19 runs and inputs air into the detection tooling 17 through the air pipe, it drives the fan 31 to rotate, and then drives the first wedge rod 32, the connecting rod 33 and the second wedge rod 34 to rotate. When the first wedge rod 32, the connecting rod 33 and the second wedge rod 34 rotate, due to the Z-shaped structure formed among the first wedge rod 32, the connecting rod 33 and the second wedge rod 34, the fixing plate 36 on one side of the sleeve 35 can perform an elliptical cyclic swing, thereby driving the bottom rotating rod 37 to move up and down in a cyclic manner. At the same time, the rotating rod 37 and the fixing plate 36 rotate relative to each other, so that the sleeve plate 38 can move up and down in a cyclic manner on the second wedge rod 34. It can help simulate the pressure changes and movement conditions that the valve and the seal may encounter under the actual working state. Through this dynamic test method, it can better detect the seal leakage that may occur during actual use, especially the hidden leakage caused by pressure fluctuations.

[0043] After the detection of the first valve is completed, while the airtight detector 19 exhausts, the air cylinder 15 runs in the reverse direction, driving the flat plate 16 to move upward, so that the detection tooling 17 and the dynamic pressure simulation mechanism 3 move out of the valve. The motor 217 runs again to move the valves one by one to the bottom of the detection tooling 17 for detection. Through the above operation steps, the staff only need to place the valves one by one on the end of the sliding platform 21 away from the second limiting strip 23 on one side of the detection platform 11, thereby realizing the automatic detection process of the valves. After the detection is completed, the valves move to the guide table 12, slide out of the detection platform 11, and are collected.

[0044] When the valve leaks gas, the gas enters the water tank through the exhaust pipe 14 at the bottom of the detection platform 11, generating bubbles, and the airtightness of the valve can be visually checked. The staff only need to pick out the leaking valves.

[0045] The above are only the preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention.

Claims

1. A valve air tightness detection device, comprising a detection platform (11), a guide platform (12) arranged in an inclined manner is welded to one side of the detection platform (11), and a fixing frame (13) is fixedly connected to the top surface of the detection platform (11) on the side away from the guide platform (12), characterized in that: A plate (16) for limiting and fixing the valve is installed on the top of the fixing frame (13); a detection tool (17) is installed at the center of the bottom surface of the plate (16); and a dynamic pressure simulation mechanism (3) for simulating the dynamic load change of the valve during actual use is rotatably connected to the bottom center of the detection tool (17); an automatic transport detection mechanism (2) for sending the valves into the detection system one by one according to a set rhythm to reduce manual operation time and intervention is arranged at the bottom of the dynamic pressure simulation mechanism (3); The dynamic pressure simulation mechanism (3) comprises a first wedge rod (32) and a second wedge rod (34) fixedly connected via a connecting rod (33), wherein the connecting rod (33), the first wedge rod (32) and the second wedge rod (34) are arranged in a Z-shaped structure, and a fan (31) is fixedly connected to the top end of the first wedge rod (32) and is rotatably connected to the center of the bottom end of the detection tooling (17); The connecting rod (33) is sleeved with a sleeve (35), and the first wedge rod (32) and the second wedge rod (34) respectively limit the sleeve (35); a fixing plate (36) arranged in an inclined manner is welded to one side of the sleeve (35); a rotating rod (37) is rotatably connected to a side of the fixing plate (36) away from the sleeve (35); one end of the rotating rod (37) is spherically arranged; the spherical end of the rotating rod (37) is located inside the fixing plate (36); the spherical end of the rotating rod (37) is universally rotatable with the fixing plate (36); an end of the rotating rod (37) away from the fixing plate (36) is rotatably connected to a sleeve plate (38) which is slidably penetrated by the second wedge rod (34); and the sleeve plate (38) limits the rotating rod (37) in a lateral direction.

2. A valve air tightness detection device according to claim 1, characterized in that: The automatic transport detection mechanism (2) comprises two first limit bars (22) arranged in a transverse direction and a second limit bar (23) arranged in a longitudinal direction, and the first limit bar (22) and the second limit bar (23) are respectively fixedly connected to the top surface of the detection platform (11), and a slide groove (218) is provided between the second limit bar (23) and the detection platform (11), and two L-shaped sliding blocks (213) slidably connected to the second limit bar (23) are provided in the slide groove (218).

3. A valve air tightness detection device according to claim 2, characterized in that: The second limiting strip (23) limits the L-shaped slider (213) in the lateral direction. The bottom surface of the detection platform (11) close to the guide platform (12) is rotatably connected to a rotating member (215). The two long ends of the rotating member (215) are rotatably connected to connecting plates (214) arranged in a mirror image. The two connecting plates (214) and the rotating member (215) are arranged in a Z-shaped structure. The end of the connecting plate (214) away from the rotating member (215) is rotatably connected to the L-shaped slider (213). A synchronous belt assembly (216) is arranged on the side of the rotating member (215) away from the connecting plate (214).

4. A valve air tightness detection device according to claim 3, characterized in that: A synchronous wheel in the synchronous belt assembly (216) is fixedly connected to the rotating member (215), and another synchronous wheel in the synchronous belt assembly (216) is rotationally connected to the detection platform (11). A motor (217) is installed at the bottom of the detection platform (11) away from the guide platform (12). The output end of the motor (217) is slidably connected to the detection platform (11), and the through end of the motor (217) is fixedly connected to a synchronous wheel in the synchronous belt assembly (216) away from the rotating member (215).

5. A valve air tightness detection device according to claim 4, characterized in that: The through end of the motor (217) is fixedly connected to a rotating plate (27) rotatably connected to the top surface of the detection platform (11), and the through end of the motor (217) is fixedly connected to the center of the motor (217), one end of the rotating plate (27) is rotatably connected to a connecting plate (26), and the other end of the connecting plate (26) is rotatably connected to a slide table (24) that is limitedly slidable with the first limit strip (22).

6. A valve air tightness detection device according to claim 5, characterized in that: The top of the slide table (24) has two rectangular sliders (25) for limited sliding. One side of the rectangular slider (25) is fixedly connected to a slide bar (28) for limited sliding with the L-shaped slider (213). The bottom of the slide bar (28) is provided with a sliding platform (21) fixedly connected to the top surface of the detection platform (11). The two sides of the sliding platform (21) are respectively engaged with the first limit bar (22) and the second limit bar (23). A rubber pad (18) is installed on the top surface of the sliding platform (21) near the second limit bar (23). An exhaust hole connected to the bottom of the detection platform (11) is opened through the center of the sliding platform (21) and the rubber pad (18), and an exhaust pipe (14) is installed at the exhaust hole at the bottom of the detection platform (11).

7. A valve airtightness detection device according to claim 6, characterized in that: A plurality of U-shaped frames (29) arranged at equal intervals in a linear manner are fixedly connected to the top of the slide bar (28); two hinged clamping plates (211) are arranged on one side of the U-shaped frame (29); and the clamping plates (211) are arranged in a semi-arc shape and made of a rubber anti-slip material; spring rods (210) are slidably inserted through both sides of the top of the U-shaped frame (29); and the springs in the spring rods (210) are fixedly connected to the side walls of the U-shaped frame (29); one end of the spring rod (210) close to the clamping plates (211) is spherically arranged; and a spherical seat (212) is fixedly connected to the side of the clamping plates (211) facing the U-shaped frame (29); the spherical end of the spring rod (210) is universally rotatably connected to the spherical seat (212), and the spherical end of the spring rod (210) is located in the spherical seat (212).

8. A valve air tightness detection device according to claim 1, characterized in that: An airtightness detector (19) is installed at the center of the top surface of the fixing frame (13), and the airtightness detector (19) is connected to the detection tooling (17) after being fixed through the plate (16) via an air pipe. At the same time, cylinders (15) fixedly installed on the fixing frame (13) are respectively arranged on both sides of the airtightness detector (19), and the telescopic end of the cylinder (15) is slidably connected to the fixing frame (13), and the through end of the cylinder (15) is fixedly connected to the plate (16), and at the same time, the plate (16) is slidably connected to the fixing frame (13).

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