Valve airtightness detection device

Abstract

The invention discloses a valve airtightness detection device, and belongs to the technical field of valves, the valve airtightness detection device comprises a detection platform, and the center of the bottom end of a detection tool is rotatably connected with a dynamic pressure simulation mechanism used for simulating the dynamic load change of a valve in the actual use process; the bottom of the dynamic pressure simulation mechanism is provided with an automatic transportation detection mechanism which is used for sending valves into a detection system one by one according to a set rhythm and reducing manual operation time and intervention. By adopting the dynamic pressure simulation mechanism and the automatic transportation detection mechanism, efficient and stable air tightness detection can be maintained, continuous and stable operation of the air tightness detection device can be ensured, manual operation time and intervention are reduced, the whole detection process is smoother and more efficient, and meanwhile, the simulation in practical application is more accurate and reliable. The frequent pressure fluctuation of the valve and other sealing elements ensures that the detection result is more representative, and the detection capability of the leakage problem is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of valves, and in particular relates to a valve air tightness detection device. Background Art

[0002] Valves play a vital role in pipeline systems, especially in situations involving high pressure, high temperature, flammable, explosive or toxic gases. Air tightness testing can ensure that valves will not leak during operation, leading to safety accidents. For industrial fields, especially oil, natural gas, electricity and other industries, the air tightness of valves directly affects the stability of the entire system. Through air tightness testing, 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 and pollute the environment. Air tightness testing helps reduce such risks and protect the environment. By regularly testing the sealing performance of valves, potential problems can be discovered early, the failure rate can be reduced, and the service life of equipment can be extended.

[0003] When testing the air tightness of a valve, it is necessary to manually place the valve into a testing tool. After the testing tool presses the valve tightly under the push of an air cylinder, an air tightness tester inflates and pressurizes the valve in the testing tool through an air pipe to test the air tightness of the valve. However, in actual applications, valves are often not faced with constant pressure, but pressure fluctuations or periodic changes. For example, the flow of fluid in a pipeline, the start / stop of a pump, and the water hammer effect can all lead to rapid fluctuations in the pressure in the pipeline, and pressure fluctuations and vibrations may cause slight displacements or changes in the sealing surface of the valve. , which may not be simulated or fully reflected during air tightness testing, resulting in the test results being inconsistent with the sealing performance under actual working conditions. Therefore, the air tightness tester cannot accurately simulate the impact of the water hammer effect on the valve sealing performance through inflation and pressurization, which may lead to a large difference between the test results and actual usage. In addition, when testing the valves, it is necessary to manually test the air tightness of the valves one by one, and it takes a lot of time to manually test each valve one by one. Especially for large-scale production and a large number of valves, this method will be extremely inefficient and increase the overall testing time. Summary of the invention

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

[0005] The technical solution adopted to solve the above technical problems is: a valve air tightness detection device, including a detection platform, a guide platform arranged in an inclined manner is welded on one side of the detection platform, and a fixing frame is fixedly connected to the top surface of the detection platform away from the guide platform, a flat plate for limiting and fixing the valve is installed on the top of the fixing frame, a detection tool is installed at the center of the bottom surface of the flat plate, and a dynamic pressure simulation mechanism for simulating the dynamic load changes of the valve during actual use is rotatably connected to the bottom center of the detection tool, and an automatic transportation detection mechanism 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.

[0006] Through the above technical solution, the valves can be automatically sent into the detection system one by one according to a predetermined rhythm, reducing the time and intervention of manual operation, making the entire 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 movement states that the valves will withstand during actual working processes.

[0007] Furthermore, 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, and the top end of the first wedge rod is fixedly connected to a fan rotatably connected to the center of the bottom end of the detection tooling.

[0008] Through the above technical solution, the airflow in the valve is helped to change periodically, so that the entire detection process can quickly adapt to and reflect the impact of pressure fluctuations on sealing, thereby improving the efficiency and accuracy of detection.

[0009] Furthermore, the automatic transport detection mechanism includes two first limit bars arranged horizontally and one second limit bar arranged vertically, and the first limit bar and the second limit bar are respectively fixedly connected to the top surface of the detection platform, and a sliding groove is opened between the second limit bar and the detection platform, and two L-shaped sliders are arranged in the sliding groove and are slidably connected to the second limit bar.

[0010] Furthermore, the connecting rod is sleeved with a sleeve, and the first wedge rod and the second wedge rod respectively limit the sleeve, a fixed plate arranged obliquely is welded on one side of the sleeve, the fixed plate is rotatably connected to a rotating rod on the side away from the sleeve, and one end of the rotating rod is spherically arranged, the spherical end of the rotating rod is located inside the fixed plate, and the spherical end of the rotating rod is universally rotatable with the fixed plate, the end of the rotating rod away from the fixed plate is rotatably connected to a sleeve plate which is penetrated and slidably by the second wedge rod, and the sleeve plate limits the rotating rod laterally.

[0011] Through the above technical solution, a large number of valves can be automatically processed for air tightness testing, reducing manual labor intensity and improving the safety and comfort of the working environment.

[0012] Furthermore, the second limit bar limits the L-shaped slider laterally, and the bottom end surface of the detection platform close to the guide platform is rotatably connected to a rotating part, and the two long ends of the rotating part are rotatably connected to connecting plates arranged in a mirror image, and a Z-shaped structure is arranged between the two connecting plates and the rotating part. The connecting plate is rotatably connected to the L-shaped slider at one end away from the rotating part, and a synchronous belt assembly is arranged on the side of the rotating part away from the connecting plate.

[0013] Furthermore, a synchronous wheel in the synchronous belt assembly is fixedly connected to the rotating part, and another synchronous wheel in the synchronous belt assembly is rotatably connected to the detection platform. A motor is installed at the bottom of the detection platform away from the guide platform. The output end of the motor is slidably connected to the detection platform, and the through end of the motor is fixedly connected to a synchronous wheel in the synchronous belt assembly away from the rotating part.

[0014] The above technical solution avoids missed detection or erroneous detection caused by the valve not correctly entering the detection tooling due to improper manual operation.

[0015] Furthermore, the through-end of the motor is fixedly connected to a rotating plate rotatably connected to the top surface of the detection platform, and the through-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 slide table that slides with the first limit strip.

[0016] Furthermore, the slide table has two rectangular sliders for limited sliding on the top, one side of the rectangular slider is fixedly connected to a sliding rod for limited sliding with 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, and the two sides of the sliding platform are respectively engaged with the first limit bar and the second limit bar, a rubber pad is installed on the top surface of the sliding platform close to the second limit bar, an exhaust hole connected to the bottom of the detection platform is opened at 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 at equal intervals in a linear manner are fixedly connected to the top of the sliding rod, two hinged clamps are arranged on one side of the U-shaped frame, and the clamps are made of semi-arc rubber anti-slip material, spring rods are slidably arranged on 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, the spring rods are spherically arranged near one end of the clamps, and a spherical seat is fixedly connected to the side of the clamps facing the U-shaped frame, the spherical end of the spring rod is universally rotatably connected to the spherical seat, and the spherical end of the spring rod is located in the spherical seat.

[0018] Through the above technical solution, valves of different specifications or types can be switched quickly without long shutdown or adjustment, thereby improving the overall efficiency of the production line. At the same time, the continuity of the detection process ensures that the production line has almost no downtime, so that the airtight detection device can complete the detection of a large number of valves in a shorter time, thereby improving the overall production capacity.

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

[0020] The beneficial effects of the present invention are as follows: (1) The present invention adopts a dynamic pressure simulation mechanism. After the airtightness detector is running and inputs air into the detection tooling through the air pipe, 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 between the first wedge rod, the connecting rod and the second wedge rod, the fixed plate on one side of the sleeve can swing elliptical cycle, thereby driving the bottom rotating rod to move up and down cycle. At the same time, the rotating rod and the fixed plate produce relative rotation, which can make the sleeve plate move up and down cycle on the second wedge rod to simulate pressure fluctuations and vibrations. The movement of the sleeve plate can simulate the dynamic working conditions of the valve under the pipeline fluid flow or 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 small leaks caused by uneven, deformed or aging valve sealing surfaces; (2) The present invention adopts an automatic transport detection mechanism. The operation of the motor drives the synchronous belt assembly to transmit, and at the same time drives the rotating member and the rotating plate to rotate. When the rotating member rotates, it drives the connecting plates on both sides to rotate with the connection point of the rotating member as the origin. At the same time, the connecting plates and the rotating member produce relative rotation, so that the two connecting plates pull or push the two L-shaped sliders to perform cyclic reciprocating motion in opposite and separate directions in the slide groove. When the L-shaped slider moves, the slide rod moves synchronously with the L-shaped slider, and the rectangular slider fixedly connected to the other end of the slide rod slides cyclically reciprocatingly in opposite or separate directions on the slide table; When the rotating plate rotates, it drives the connecting plate to rotate, and the connecting plate and the slide table rotate relative to each other, thereby causing the slide table to move back and forth on the first limit strip, and then with the cooperation of the rotating plate and the rotating part, the slide 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 away from the second limit strip, and the slide rod performs a continuous progressive clamping and moving process, so that the clamping plates on both sides of the top of the detection platform perform a clamping and moving process, and clamp the valves one by one and move them in the direction of the detection tooling. The valves are accurately sent to the detection position in a continuous progressive manner, which avoids the displacement or misalignment of the valve during the feeding process, ensures the accurate position of the valve during the airtightness detection process, and helps to improve the accuracy and consistency of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the planar structure of the present invention; Figure 2 It is a schematic diagram of the structure of the present invention from a first viewing angle; Figure 3 It is a structural schematic diagram of the connection between the dynamic pressure simulation mechanism and the detection tooling of the present invention; Figure 4 It is a structural schematic diagram of the dynamic pressure simulation mechanism of the present invention from a first perspective; Figure 5 is a structural schematic diagram of the dynamic pressure simulation mechanism of the present invention from a second viewing angle; Figure 6 is an exploded view of the dynamic pressure simulation mechanism of the present invention; Figure 7 is a schematic diagram of the structure of the present invention from a second viewing angle; Figure 8 yes Figure 7 A schematic diagram of the enlarged structure at point A; Fig. 9 It is a third perspective structural schematic diagram of the present invention; Fig.10 is a schematic diagram of the structure from a fourth viewing angle of the present invention; Fig.11 yes Fig.10 Schematic diagram of the enlarged structure at B.

[0022] Figure numerals: 11, detection platform; 12, guide platform; 13, fixed frame; 14, exhaust pipe; 15, cylinder; 16, flat plate; 17, detection tooling; 18, rubber pad; 19, airtightness detector; 2, automatic transport detection mechanism; 21, sliding platform; 22, first limit strip; 23, second limit strip; 24, sliding platform; 25, rectangular slider; 26, connecting plate; 27, rotating plate; 28, sliding rod; 29, U Frame; 210, spring rod; 211, clamping plate; 212, spherical seat; 213, L-shaped slider; 214, connecting plate; 215, rotating part; 216, synchronous belt assembly; 217, motor; 218, slide; 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 DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with 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 intended to limit the present invention.

[0024] like Figure 1-Figure 3 The present invention shows a valve air tightness detection device, comprising a detection platform 11, a guide platform 12 arranged in an inclined manner is welded on one side of the detection platform 11, and a fixing frame 13 is fixedly connected to the top surface of the detection platform 11 away from the guide platform 12, a plate 16 for limiting and fixing the valve is installed on the top of the fixing frame 13, an air tightness detector 19 is installed at the center of the top surface of the fixing frame 13, and the air tightness detector 19 is connected with the detection tooling 17 after being fixed through the plate 16 through an air pipe, and can automatically send the valves into the detection system one by one according to a predetermined rhythm, reduce the time and intervention of manual operation, make the whole detection process smoother and more efficient, and at the same time, can better simulate the air tightness conditions in actual use, especially the pressure fluctuation and movement state that the valve will withstand during the actual working process, and at the same time, cylinders 15 fixedly installed with the fixing frame 13 are respectively arranged on both sides of the air tightness detector 19, and the telescopic end of the cylinder 15 is connected with the fixing frame 13 through sliding, and the through end of the cylinder 15 is fixedly connected with the plate 16, and at the same time, the plate 16 is connected with the fixing frame 13 through sliding.

[0025] like Figure 2-Figure 6As shown, a detection fixture 17 is installed at the center of the bottom surface of the flat plate 16, and the bottom center of the detection fixture 17 is rotatably connected to a dynamic pressure simulation mechanism 3 for simulating the dynamic load change of the valve during actual use. The dynamic pressure simulation mechanism 3 includes a first wedge rod 32 and a second wedge rod 34 fixedly connected by a connecting rod 33. 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 on one side of the sleeve 35 to help the airflow to change periodically in the valve, so that the entire detection process can quickly adapt to and reflect the pressure fluctuations. In order to improve the sealing performance and the efficiency and accuracy of the detection, the fixed plate 36 is rotatably connected to a rotating rod 37 on the side away from the sleeve 35, and one end of the rotating rod 37 is spherically set, the spherical end of the rotating rod 37 is located inside the fixed plate 36, and the spherical end of the rotating rod 37 is universally rotatable with the fixed plate 36, and the rotating rod 37 is rotatably connected to a sleeve plate 38 that is slidably penetrated by the second wedge rod 34 at one end of the rotating rod 37 away from the fixed plate 36, and the sleeve plate 38 limits the rotating rod 37 laterally, and the connecting rod 33, the first wedge rod 32 and the second wedge rod 34 are arranged in a Z-shaped structure, and the top of the first wedge 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.

[0026] like Figure 1-Figure 11As shown, the bottom of the dynamic pressure simulation mechanism 3 is provided with an automatic transport detection mechanism 2 for sending the valves into the detection system one by one according to the set rhythm to reduce the manual operation time and intervention. The automatic transport detection mechanism 2 includes two first limit bars 22 arranged horizontally and a second limit bar 23 arranged vertically. The second limit bar 23 performs horizontal limit on the L-shaped slider 213. The bottom end surface of the detection platform 11 close to the guide platform 12 is rotatably connected with a rotating member 215. The two long ends of the rotating member 215 are rotatably connected with mirror-set connecting plates 214. When the two connecting plates 214 rotate and the two connecting plates 214 are located in a straight line, the two do not intersect, and no motion interference will occur. In addition, a Z-shaped structure is formed between the two connecting plates 214 and the rotating member 215. The connecting plate 214 is configured such that one end away from the rotating member 215 is rotatably connected to the L-shaped slider 213, and a synchronous belt assembly 216 is provided on the side of the rotating member 215 away from the connecting plate 214. 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 rotatably 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. By adopting a controller in the prior art, the cylinder 15, the airtightness detector 19 and the motor 217 are controlled to cooperate with each other to realize the automatic detection process of the valve. 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. Then, one end of the rotating plate 27 is rotatably connected to the connecting plate 26. When the rotating plate 27 rotates, when the rotating plate 27 and the first limiting strip 22 are at an angle of ninety degrees, the rotating plate 27 and the first limiting strip 22 do not intersect. Therefore, when the rotating plate 27 is rotating, the first limiting strip 22 will not hinder the rotating plate 27, and the other end of the connecting plate 26 is rotatably connected to a slide table 24 that is limited and slidable with the first limiting strip 22. 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 that is limited and slidable with the L-shaped slider 213. The top of the slide bar 28 is fixedly connected to a plurality of U-shaped frames 29 that are linearly and evenly spaced. Two hinged clamps 211 are arranged on one side of the U-shaped frame 29, and the clamps 211 are semi-arc rubber anti-slip material settings. Spring rods 210 are slidably provided on both sides of the top of the frame 29, and the springs in the spring rods 210 are fixedly connected to the side walls of the U-frame 29. The spring rods 210 are spherically arranged at one end close to the clamping plate 211, which can automatically handle a large number of valves for air tightness detection, reduce manual labor intensity, and improve the safety and comfort of the working environment. The clamping plate 211 is fixedly connected with a spherical seat 212 on the side facing the U-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 relatively 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 rods 210 shrink to different degrees, thereby adapting to valves of different specifications and sizes.The versatility of the device is improved. The spherical end of the spring rod 210 is universally connected to the spherical seat 212, and the spherical end of the spring rod 210 is located in the spherical seat 212. The bottom of the slide rod 28 is provided with a sliding platform 21 fixedly connected to the top surface of the detection platform 11, and the two sides of the sliding platform 21 are respectively engaged with the first limit bar 22 and the second limit bar 23.

[0027] like Figure 2-Figure 11 As shown, a rubber pad 18 is installed on the top surface of the sliding platform 21 near the side of the second limit strip 23, and 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, which avoids missed detection or wrong detection caused by the valve not correctly entering the detection fixture 17 due to improper manual operation. The output end of the motor 217 is slidably connected with the detection platform 11, and the through end of the motor 217 is fixed with a synchronous wheel in the synchronous belt assembly 216 away from the rotating member 215, and the first limit The positioning strip 22 and the second limiting strip 23 are respectively fixedly connected to the top surface of the detection platform 11, and a slide groove 218 is provided between the second limiting strip 23 and the detection platform 11, so that valves of different specifications or types can be quickly switched without long shutdown or adjustment, thereby improving the overall efficiency of the production line. At the same time, the continuity of the detection process ensures that the production line has almost no stagnation time, so that the airtight detection device can complete the detection of a large number of valves in a shorter time, thereby improving the overall production capacity. Two L-shaped sliders 213 slidably connected to the second limiting strip 23 are arranged in the slide groove 218.

[0028] 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 runs to drive the synchronous belt assembly 216 for transmission, and at the same time drives the rotating member 215 and the rotating plate 27 to rotate. When the rotating member 215 rotates, it drives the connecting plates 214 on both sides to rotate with the connection point of the rotating member 215 as the origin, and at the same time, the connecting plates 214 and the rotating member 215 produce relative rotation, so that the two connecting plates 214 pull or push the two L-shaped sliders 213 to perform opposite and separate reciprocating motions in the slide groove 218. When the L-shaped slider 213 moves, the slide rod 28 moves synchronously with the L-shaped slider 213, and the rectangular slider 25 fixedly connected to the other end of the slide rod 28 slides on the slide table 24 in opposite or separate directions.

[0029] When the rotating plate 27 rotates, it drives the connecting plate 26 to rotate, and the connecting plate 26 and the slide 24 rotate relative to each other, thereby prompting the slide 24 to move back and forth on the first limit strip 22. Then, with the cooperation of the rotating plate 27 and the rotating member 215, the slide 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 limit strip 23, and the slide rod 28 performs a continuous progressive clamping and moving process, so that the clamping plates 211 on both sides of the top of the detection platform 11 perform a clamping and moving process, and clamp the valves one by one and move them toward the detection tooling 17.

[0030] When the valve moves to the bottom of the detection fixture 17, the motor 217 stops running, so that the clamping plate 211 is tested under the clamping limit of the valve, and then the cylinder 15 drives the plate 16 to move downward, so that the detection fixture 17 presses the valve, and the dynamic pressure simulation mechanism 3 is located inside the valve. Then, the airtightness detector 19 runs to input air into the detection fixture 17 through the air pipe, driving the fan 31 to rotate, and then driving 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 first The Z-shaped structure formed by the wedge rod 32, the connecting rod 33 and the second wedge rod 34 can make the fixed plate 36 on one side of the sleeve 35 perform an elliptical cyclic swing, thereby driving the rotating rod 37 at the bottom to move up and down in a circular motion. At the same time, the rotating rod 37 and the fixed plate 36 produce relative rotation, which can make the sleeve plate 38 move up and down on the second wedge rod 34 in a circular motion, which can help simulate the pressure changes and movement conditions that the valve and the seal may encounter under actual working conditions. Through this dynamic testing method, it is possible to better detect sealing leaks that may occur in actual use, especially hidden leaks caused by pressure fluctuations.

[0031] After the initial valve inspection is completed, the air tightness detector 19 is exhausted while the cylinder 15 runs in the reverse direction, driving the plate 16 to move upward, so that the inspection tooling 17 and the dynamic pressure simulation mechanism 3 move out of the valve, and the motor 217 runs again to move the valves one by one to the bottom of the inspection tooling 17 for inspection. Through the above-mentioned operation steps, the staff only needs to place the valves one by one on the end of the sliding platform 21 away from the second limit strip 23 on one side of the inspection platform 11, thereby realizing an automated inspection process for the valves. After the inspection, the valves are moved to the guide platform 12, slide out of the inspection platform 11, and are collected.

[0032] When gas leaks from the valve, the gas enters the water tank through the exhaust pipe 14 at the bottom of the detection platform 11, generating bubbles, so that the air tightness of the valve can be visually checked. The staff only needs to pick out the leaking valve.

[0033] The above description is only a preferred embodiment of the present invention and is 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), and an automatic transportation detection mechanism (2) is arranged at the bottom of the dynamic pressure simulation mechanism (3) for sending the valves into the detection system one by one according to a set rhythm and reducing manual operation time and intervention.

2. A valve air tightness detection device according to claim 1, characterized in that: 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).

3. A valve airtightness 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).

4. A valve air tightness detection device according to claim 2, characterized in that: 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.

5. A valve air tightness detection device according to claim 3, 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).

6. A valve air tightness detection device according to claim 5, 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).

7. A valve airtightness detection device according to claim 6, 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).

8. A valve air tightness detection device according to claim 7, 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).

9. A valve air tightness detection device according to claim 8, 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).

10. 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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