A valve testing apparatus

Abstract

The application belongs to the technical field of valve testing, and specifically provides a valve testing device, which comprises a detection table, one side of the detection table is provided with a pre-detection feeding mechanism, the side of the detection table away from the pre-detection feeding mechanism is provided with a screwing mechanism, the front side of the detection table is connected with a discharging table, the rear side of the detection table is provided with an insertion type detection assembly, and the insertion type detection assembly is provided with a discharging mechanism; the valve testing device can automatically adjust valve clamping and testing parameters according to the specific size of the valve; in addition, the application of a visual perception system is combined, a pre-action principle is adopted, the valve body is automatically clamped and tested during valve testing, and unqualified products are automatically marked, so that manual intervention is not needed, the testing time is short, and the degree of automation is high.

Description

Technical Field

[0001] This invention belongs to the field of valve testing technology, specifically referring to a valve testing device. Background Technology

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and regulate and control the parameters of the transported medium. They can be used to control the flow of various types of fluids, including air, water, steam, various corrosive media, slurry, oil, liquid metals, and radioactive media. After valve manufacturing, their sealing performance needs to be tested using testing equipment to ensure the valve's functionality and guarantee its quality upon leaving the factory.

[0003] Existing valve testing equipment still has the following shortcomings in practical use:

[0004] 1. Some valve testing equipment requires the adjustment of various equipment parameters according to the specific size of the valve during use, which is time-consuming and labor-intensive, and has a low degree of automation.

[0005] 2. Some valve testing equipment still relies on manual judgment to determine whether the valve's sealing performance is good. The testing process is time-consuming, labor costs are high, and testing efficiency is low. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides a valve testing device that can automatically adjust valve clamping and testing parameters according to the specific dimensions of the valve. Furthermore, by combining a visual perception system and employing a pre-action principle, the device automatically clamps and tests the valve body during testing, while automatically marking defective products. This eliminates the need for manual intervention, resulting in short testing times and a high degree of automation.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: The present invention provides a valve testing device, including a testing platform, a pre-inspection feeding mechanism on one side of the testing platform, a screwing mechanism on the side of the testing platform away from the pre-inspection feeding mechanism, a discharge platform connected to the front side of the testing platform, an insertion testing component on the rear side of the testing platform, and a discharge mechanism on the insertion testing component.

[0008] This device uses a pre-inspection feeding mechanism to pre-determine the inner diameter and maximum outer diameter of the valve body, and pushes the valve body onto the testing platform for feeding. During the transfer of the valve body, the valve plate is closed by a screwing mechanism to facilitate subsequent testing. The sealing performance is tested by an insertion-type testing component. Finally, the tested valve body is pushed to the discharge platform by the discharge mechanism. While pushing the valve body out of the platform, defective products are marked, resulting in high testing efficiency.

[0009] Furthermore, the pre-inspection feeding mechanism includes a placement platform, a pre-inspection cover, a feeding electric push rod, and a visual perception analyzer. The placement platform is connected to one side of the inspection platform, the pre-inspection cover is placed on the placement platform, the feeding electric push rod is located on the side wall of the pre-inspection cover, and the output end of the feeding electric push rod faces the inspection platform. The visual perception analyzer is located on the upper part of the pre-inspection cover, and the output end of the visual perception analyzer is provided with a projection plate through the upper wall of the pre-inspection cover.

[0010] Furthermore, the insertion-type testing assembly includes a testing frame, a hydraulic push rod, a pressure shroud, and a rotary spraying mechanism. The testing frame is connected to the rear side wall of the testing platform and is arranged in an inverted L-shape. The hydraulic push rod is located on the upper part of the testing frame, with its output end facing the upper surface of the testing platform. The pressure shroud is located at the output end of the hydraulic push rod, and an upper pressure plate is provided at the lower part of the pressure shroud. The rotary spraying mechanism is located inside the pressure shroud and passes through the center of the upper pressure plate.

[0011] Furthermore, the interior of the pressure cover is hollow, and the center of the upper pressure plate has a through hole. The rotary spraying mechanism includes a second electric telescopic rod, a rotary motor, a detection rod, a flipping link, and a camera. The second electric telescopic rod is embedded in the center of the pressure cover. The rotary motor is embedded in the output end of the second electric telescopic rod. The detection rod is located at the lower part of the rotary motor and is connected to the output end of the rotary motor. The flipping link is rotatably embedded in the outer wall of the detection rod and is symmetrically arranged. The camera is embedded in the center of the lower end of the detection rod.

[0012] Furthermore, the interior of the flipping link is hollow, and the upper end of the flipping link is rotatably connected to the detection rod. The flipping link is driven by a flipping motor. The detection rod has a liquid passage groove inside, which is a three-way groove. The three openings of the liquid passage groove penetrate the outer wall of the detection rod. The two symmetrical openings of the liquid passage groove are respectively connected to connecting pipes between the symmetrical flipping links. A water tank is provided on the side wall of the detection frame facing the hydraulic push rod. A water pump is provided inside the water tank. A water pipe is connected between one opening of the liquid passage groove and the water pump. The water pipe passes through the through holes of the pressure cover and the upper pressure plate.

[0013] Preferably, a rubber pad is embedded in the upper end of the testing platform, and the center of the rubber pad is through the pad. A first electric telescopic rod is embedded in the upper part of the testing platform. The first electric telescopic rod is located in the center of the rubber pad. The output end of the first electric telescopic rod is opposite to the output end of the second electric telescopic rod. An air pump is provided at the output end of the first electric telescopic rod, and an air inlet is provided at the output end of the air pump.

[0014] In operation, the hydraulic push rod is activated, causing the pressure cover and upper pressure plate to move downwards. The upper pressure plate presses against the upper part of the valve body, and the lower end of the valve body is pressed tightly against the rubber pad, thus forming a sealed space below the valve plate. The first and second electric telescopic rods are activated. The first electric telescopic rod causes the air inlet to extend out of the end face of the testing platform and approach the valve plate. The second electric telescopic rod pushes the testing rod out of the through hole of the upper pressure plate and into the interior of the valve body. At this time, the tilting motor adjusts the rotation angle of the tilting linkage according to the pre-measured inner diameter of the channel, causing the symmetrical tilting linkage to open outwards away from the testing rod, thus opening the valve body. With the movable end facing the edge of the valve plate, the motor is then rotated to make the detection rod rotate one revolution. At the same time, the water pump starts, injecting soapy water from the water tank into the flipping linkage through the water pipe, liquid tank, and connecting pipe, and spraying it onto the edge of the valve plate. The soapy water completely covers the closure between the valve plate and the inner wall of the valve body. Simultaneously, the air pump works, inflating the sealed space under the valve plate through the air inlet. During this period, the camera observes whether air bubbles appear on the edge of the valve plate for 3 minutes. If no air bubbles are generated, the airtightness of the valve body is qualified. If air bubbles are generated, there is air leakage, and the airtightness of the valve body is unqualified.

[0015] Furthermore, the rubber pad is arranged opposite to the upper pressure plate, and the valve body is clamped between the rubber pad and the upper pressure plate. A limit motor is provided on the side wall of the detection platform near the screwing mechanism. A screw is provided at the output end of the limit motor. A limit rod is engaged with the screw. The limit rod slides on the rubber pad. A sensing strip is provided on the detection platform. The sensing strip is located on one side of the rubber pad and above the limit rod. The sensing strip is perpendicular to the limit rod. A pointer is provided on the limit rod. The pointer slides on the sensing strip.

[0016] Preferably, the pre-inspection cover is open on the side facing the inspection table, and a material discharge door is rotatably provided on the rear side of the pre-inspection cover; a refracting cylinder is provided at the lower center of the placement table, the refracting cylinder is shaped like an inverted frustum, a lamp is provided on the inner bottom wall of the refracting cylinder, and a transparent disk is provided at the upper end of the refracting cylinder, the transparent disk is embedded in the center of the placement table, and the transparent disk is located directly below the projection plate; the valve body is placed on the transparent disk, the lamp shines on the valve body, the refracting cylinder diffuses the light of the lamp, and projects the maximum outer diameter and the inner diameter of the channel of the valve body onto the projection plate through the transparent disk, and is captured by the output end of the visual perception analyzer, thereby determining the maximum outer diameter and the inner diameter of the channel of the valve body by the visual perception analyzer; the output end of the feeding electric push rod is provided with a feeding push plate, which moves above the placement table and the inspection table.

[0017] Furthermore, the screwing mechanism includes a screwing frame, a multi-segment telescopic rod, a spring plate, and a rotating plate. The screwing frame is connected to the side wall of the inspection platform away from the pre-inspection feeding mechanism. An electric lifting block is provided on the upper part of the end of the screwing frame away from the inspection platform. The multi-segment telescopic rod is provided on the side wall of the electric lifting block facing the inspection platform. The spring plate is provided at the telescopic end of the multi-segment telescopic rod. A compression spring is connected between the spring plate and the electric lifting block. The compression spring is sleeved on the outside of the multi-segment telescopic rod. A screwing motor is provided on the inner side of the spring plate. The rotating plate is provided at the output end of the screwing motor. The rotating plate is arranged opposite to the feeding push plate. Electric insertion rods are symmetrically provided on the side wall of the spring plate near the feeding push plate.

[0018] When the feeding pusher plate pushes the valve body towards the testing table, the multi-section telescopic rod extends under the elastic action of the compression spring, causing the spring plate to move above the testing table. The rotating plate presses against the push rod as the valve body moves. At this time, the valve body is clamped by the feeding pusher plate and the rotating plate. While the feeding pusher plate pushes the valve body towards the rubber pad, the electric insert rod is activated. The symmetrical electric insert rods extend from the rotating plate and insert into the gap of the push rod. At the same time, the turning motor is activated, driving the rotating plate to rotate, which in turn drives the electric insert rod to rotate. The electric insert rod interferes with the push rod of the valve body, which in turn drives the push rod to rotate, causing the valve body to close the valve plate before it moves onto the rubber pad. When the outermost wall of the valve body abuts against the limit rod, the feeding electric pusher rod stops working. At this time, the center of the valve body coincides with the center of the rubber pad.

[0019] Furthermore, the discharge mechanism includes a discharge electric push rod, a discharge push plate, and a baffle. The discharge electric push rod is mounted on the detection frame, with its output end facing the rubber pad. The discharge push plate is mounted on the output end of the discharge electric push rod. The baffle is connected to the side of the discharge push plate near the screwing mechanism and slides through the detection frame. The upper wall of the baffle is higher than the screwing mechanism.

[0020] Preferably, the testing frame is also equipped with a paint tank, which is located on one side of the discharge push plate. A nozzle is embedded in the side wall of the discharge push plate near the rubber pad, and the nozzle is connected to the paint tank through a liquid pump and a liquid pipe.

[0021] Preferably, the testing platform is equipped with a main controller, which is a PLC controller. The feeding electric push rod, visual perception analyzer, illumination lamp, limit motor, sensing strip, first electric telescopic rod, air pump, hydraulic push rod, rotary motor, second electric telescopic rod, camera, tilting motor, water pump, electric lifting block, turning motor, electric insertion rod, discharge electric push rod and liquid pump are all electrically connected to the main controller.

[0022] The beneficial effects achieved by the present invention using the above structure are as follows:

[0023] 1. The valve testing equipment provided by this invention uses a visual perception system to pre-measure the maximum outer diameter of the valve body and the inner diameter of the channel before testing, so that the equipment can automatically adjust the valve clamping and testing parameters according to the specific size of the valve. It has a high degree of automation and is suitable for testing valves of various specifications.

[0024] 2. An insertion-type detection component is set up, which adopts the pre-action principle and uses soapy water to check the airtightness of the valve plate. The spray range of soapy water can be adjusted according to the channel size of the valve body to ensure the accuracy of the detection. At the same time, it automatically marks unqualified products without manual intervention and the test time is short. Attached Figure Description

[0025] Figure 1 A schematic diagram of the structure of a valve testing device provided by the present invention;

[0026] Figure 2 This is a schematic diagram of the rear structure of a valve testing device provided by the present invention;

[0027] Figure 3 This is a schematic diagram of the testing station.

[0028] Figure 4 for Figure 3 A magnified schematic diagram of the partial structure at point A in the middle;

[0029] Figure 5 A schematic diagram of the combined structure of the testing station and the pre-inspection feeding mechanism;

[0030] Figure 6 A schematic diagram of the combined structure of the testing platform, valve body, and tightening mechanism;

[0031] Figure 7 for Figure 6 A magnified schematic diagram of the local structure at point B;

[0032] Figure 8 A schematic diagram of the combined structure of the detection table, the insertion-type detection component, and the discharge mechanism;

[0033] Figure 9 Main view of the combined structure of the detection table, insertion detection component and discharge mechanism;

[0034] Figure 10 for Figure 9 Schematic diagram of the cross-sectional structure at point CC;

[0035] Figure 11 for Figure 10 A magnified schematic diagram of the structure at point D.

[0036] The components include: 1. Inspection table; 2. Pre-inspection feeding mechanism; 3. Twisting mechanism; 4. Insertion-type inspection component; 5. Discharge mechanism; 6. Discharge platform; 7. Placement platform; 8. Pre-inspection cover; 9. Discharge door; 10. Feeding electric push rod; 11. Visual perception analyzer; 12. Illuminator; 13. Transparent disc; 14. Feeding push plate; 15. Refraction cylinder; 16. Rubber pad; 17. First electric telescopic rod; 18. Inflation port; 19. Limit motor; 20. Limit rod; 21. Sensing strip; 22. Pointer; 23. Twisting frame; 24. Multi-segment extension. 25. Telescopic rod, 26. Spring plate, 27. Rotating plate, 28. Compression spring, 29. Electric insertion rod, 30. Detection frame, 31. Hydraulic push rod, 32. Compression cover, 33. Upper pressure plate, 34. Spray spraying mechanism, 35. Water tank, 36. Discharge electric push rod, 37. Discharge push plate, 38. Baffle, 39. Paint tank, 40. Spray nozzle, 41. Water pipe, 42. Second electric telescopic rod, 43. Rotary motor, 44. Detection rod, 45. Camera, 46. Tilting linkage, 47. Liquid passage tank, 48. Connecting pipe, 49. Electric lifting block. Detailed Implementation

[0037] The technical solution of the present invention will be further described in detail below with reference to specific embodiments. The parts of the technical features or connection relationships described in the present invention that are not described in detail are all existing technologies.

[0038] The present invention will be further described in detail below with reference to the accompanying drawings.

[0039] like Figures 1-11 As shown, the valve testing equipment provided by the present invention includes a testing platform 1, a pre-inspection feeding mechanism 2 on one side of the testing platform 1, a screwing mechanism 3 on the side of the testing platform 1 away from the pre-inspection feeding mechanism 2, a discharge platform 6 connected to the front side of the testing platform 1, an insertion testing component 4 on the rear side of the testing platform 1, and a discharge mechanism 5 on the insertion testing component 4.

[0040] A rubber pad 16 is embedded in the upper end of the testing platform 1, with a through-hole in the center of the rubber pad 16. A first electric telescopic rod 17 is embedded in the upper part of the testing platform 1, located in the center of the rubber pad 16. An air pump is provided at the output end of the first electric telescopic rod 17, and an air inlet 18 is provided at the output end of the air pump. A limit motor 19 is provided on the side wall of the testing platform 1 near the screwing mechanism 3. A screw is provided at the output end of the limit motor 19, and a limit rod 20 is engaged with the screw. The limit rod 20 slides on the rubber pad 16. A sensing strip 21 is provided on the testing platform 1, located on one side of the rubber pad 16 and above the limit rod 20. The sensing strip 21 is perpendicular to the limit rod 20. A pointer 22 is provided on the limit rod 20, and the pointer 22 slides on the sensing strip 21.

[0041] The pre-inspection loading mechanism 2 includes a placement platform 7 connected to one side of the inspection platform 1. A pre-inspection cover 8 is mounted on the placement platform 7, with an opening on the side facing the inspection platform 1. A discharge door 9 is rotatably mounted on the rear side of the pre-inspection cover 8. A loading electric push rod 10 is mounted on the side wall of the pre-inspection cover 8, with its output end facing the inspection platform 1. A loading push plate 14 is mounted on the output end of the loading electric push rod 10, moving above the placement platform 7 and the inspection platform 1. A visual perception analyzer 11 is mounted on the upper part of the pre-inspection cover 8, with its output end penetrating the upper wall of the pre-inspection cover 8 and mounted on a projection plate. A refraction cylinder 15 is provided at the lower center of the placement platform 7. The refraction cylinder 15 is shaped like an inverted frustum. A lamp 12 is provided on the inner bottom wall of the refraction cylinder 15. A transparent disk 13 is provided at the upper end of the refraction cylinder 15. The transparent disk 13 is embedded in the center of the placement platform 7 and is located directly below the projection plate. When the valve body is placed on the transparent disk 13, the lamp 12 is turned on, and the refraction cylinder 15 diffuses the light of the lamp 12. The maximum outer diameter and the inner diameter of the channel of the valve body are projected onto the projection plate through the transparent disk 13 and captured by the output end of the visual perception analyzer 11. Thus, the visual perception analyzer 11 determines the maximum outer diameter of the valve body and its inner diameter.

[0042] The twisting mechanism 3 includes a twisting frame 23, which is connected to the side wall of the inspection table 1 away from the pre-inspection feeding mechanism 2. An electric lifting block 48 is provided on the upper part of the end of the twisting frame 23 away from the inspection table 1. A multi-segment telescopic rod 24 is provided on the side wall of the electric lifting block 48 facing the inspection table 1. A spring plate 25 is provided at the telescopic end of the multi-segment telescopic rod 24. A compression spring 27 is connected between the spring plate 25 and the electric lifting block 48. The compression spring 27 is sleeved on the outside of the multi-segment telescopic rod 24. A twisting motor is provided on the inner side of the spring plate 25. A rotating plate 26 is provided at the output end of the twisting motor. The rotating plate 26 is arranged opposite to the feeding push plate 14. Electric insertion rods 28 are symmetrically provided on the side wall of the spring plate 25 near the feeding push plate 14.

[0043] The insertion-type detection assembly 4 includes a detection frame 29, which is connected to the rear side wall of the detection platform 1. The detection frame 29 is arranged in an inverted L shape. A hydraulic push rod 30 is provided on the upper part of the detection frame 29. The output end of the hydraulic push rod 30 faces the upper end face of the detection platform 1. A pressure cover 31 is provided on the output end of the hydraulic push rod 30. An upper pressure plate 32 is provided on the lower part of the pressure cover 31. The interior of the pressure cover 31 is hollow. A through hole is provided in the center of the upper pressure plate 32. The upper pressure plate 32 is arranged opposite to the rubber pad 16. The valve body is clamped between the rubber pad 16 and the upper pressure plate 32. The rotary spraying mechanism 33 is located inside the pressure cover 31 and passes through the center of the upper pressure plate 32.

[0044] The rotary spraying mechanism 33 includes a second electric telescopic rod 41, which is embedded in the center of the pressure cover 31. The output end of the first electric telescopic rod 17 is opposite to the output end of the second electric telescopic rod 41. A rotary motor 42 is embedded in the output end of the second electric telescopic rod 41. A detection rod 43 is provided at the lower part of the rotary motor 42. The detection rod 43 is connected to the output end of the rotary motor 42. A rotatable flipping link 45 is embedded in the outer wall of the detection rod 43. The flipping link 45 is symmetrically arranged and hollow inside. The upper end of the flipping link 45 rotates with the detection rod 43. The connection and flipping linkage 45 are driven by a flipping motor. The detection rod 43 has a liquid passage groove 46 inside. The liquid passage groove 46 is a three-way groove. The three openings of the liquid passage groove 46 penetrate the outer wall of the detection rod 43. The two symmetrical openings of the liquid passage groove 46 are respectively connected to the symmetrical flipping linkage 45 by connecting pipes 47. The detection frame 29 has a water tank 34 on the side wall facing the hydraulic push rod 30. The water tank 34 has a water pump inside. One opening of the liquid passage groove 46 is connected to the water pump by a water pipe 40. The water pipe 40 penetrates the through hole of the pressure cover 31 and the upper pressure plate 32. A camera 44 is embedded in the center of the lower end of the detection rod 43.

[0045] The discharge mechanism 5 includes a discharge electric push rod 35, which is mounted on the testing frame 29. The output end of the discharge electric push rod 35 faces the rubber pad 16. The output end of the discharge electric push rod 35 is provided with a discharge push plate 36. A baffle 37 is connected to the side of the discharge push plate 36 near the screwing mechanism 3. The baffle 37 slides through the testing frame 29. The upper wall of the baffle 37 is higher than the screwing mechanism 3. The testing frame 29 is also provided with a paint tank 38, which is located on one side of the discharge push plate 36. A nozzle 39 is embedded in the side wall of the discharge push plate 36 near the rubber pad 16. The nozzle 39 is connected to the paint tank 38 through a liquid pump and a liquid pipe. When the valve body sealing performance is unqualified, the nozzle 39 sprays paint onto the outer wall of the valve body as a mark.

[0046] The testing platform 1 is equipped with a main controller, which is a PLC controller. The feeding electric push rod 10, visual perception analyzer 11, illumination lamp 12, limit motor 19, sensing strip 21, first electric telescopic rod 17, air pump, hydraulic push rod 30, rotary motor 42, second electric telescopic rod 41, camera 44, tilting motor, water pump, electric lifting block 48, turning motor, electric insertion rod 28, discharge electric push rod 35 and liquid pump are electrically connected to the main controller.

[0047] Working principle and workflow:

[0048] In practical use, the staff injects soapy water and paint into the water tank 34 and paint tank 38 respectively; after opening the discharge gate 9, the staff places the valve body to be tested on the transparent plate 13 and then closes the discharge gate 9, so that the pre-inspection cover 8 only has an opening facing the inspection table 1. At this time, the valve plate of the valve body is fully open and the push rod is in the maximum extension state. The main controller is started, and the electric lifting block 48 is activated according to the height of the valve body push rod, so that the center height of the rotating plate 26 is the same as the height of the valve body push rod; then the illumination lamp 12 is turned on, and the illumination lamp 12 shines on the valve body. The refracting cylinder 15 diffuses the light of the illumination lamp 12, and projects the maximum outer diameter and channel inner diameter of the valve body onto the projection plate through the transparent plate 13. This is captured by the output end of the visual perception analyzer 11, thereby achieving visual perception. The analyzer 11 determines the maximum outer diameter of the valve body and its inner diameter of the channel. The main controller transmits the measured maximum outer diameter of the valve body to the limit motor 19. The limit motor 19 starts, the screw rotates, and the limit rod 20 meshing with it slides on the rubber pad 16. When the limit rod 20 slides, the pointer 22 on it slides on the sensing strip 21, thereby adjusting the distance between the limit rod 20 and the center of the rubber pad 16. When the distance between the limit rod 20 and the center of the rubber pad 16 is equal to the outer radius of the valve body, the limit motor 19 stops working. At the same time, the main controller transmits the measured inner diameter of the valve body's channel to the tilting motor. Through the application of the vision perception system, the specific dimensions of the valve body to be inspected are measured in advance, which facilitates the automatic adjustment of relevant parameters by the inspection equipment, making it convenient to use and improving the degree of automation.

[0049] Subsequently, the electric feed pusher 10 is activated, causing the feed pusher plate 14 to push the valve body towards the testing table 1. Under the elastic action of the compression spring 27, the multi-segment telescopic rod 24 extends, causing the spring plate 25 to move above the testing table 1. The rotating plate 26 presses against the pusher rod as the valve body moves. At this time, the valve body is clamped by the feed pusher plate 14 and the rotating plate 26. While the feed pusher plate 14 pushes the valve body towards the rubber pad 16, the electric insertion rod 28 is activated. The symmetrical electric insertion rod 28 extends out of the rotating plate 26 and inserts into the gap of the pusher rod. At the same time, the rotary motor is activated, driving the rotating plate 26 to rotate, which in turn drives the electric insertion rod 28 to rotate. The electric insertion rod 28 interferes with the pusher rod of the valve body, which in turn drives the pusher rod to rotate, causing the valve body to close the valve plate before moving onto the rubber pad 16. When the maximum outer wall of the valve body abuts against the limit rod 20, the electric feed pusher 10 stops working. At this time, the center of the valve body coincides with the center of the rubber pad 16.

[0050] Immediately afterwards, the hydraulic push rod 30 is activated, causing the pressure cover 31 and the upper pressure plate 32 to move downwards. The upper pressure plate 32 presses against the upper part of the valve body, and the lower end of the valve body is pressed tightly against the rubber pad 16, thereby forming a sealed space in the part below the valve plate. The first electric telescopic rod 17 and the second electric telescopic rod 41 are activated. The first electric telescopic rod 17 causes the air inlet 18 to extend out of the end face of the detection table 1 and approach the valve plate. The second electric telescopic rod 41 pushes the detection rod 43 out of the through hole of the upper pressure plate 32 and into the interior of the valve body. At this time, the tilting motor adjusts the rotation angle of the tilting connecting rod 45 according to the pre-measured inner diameter of the channel, so that the symmetrical tilting connecting rod 45 opens outward away from the detection rod 43, so that its movable end faces the edge of the valve plate. Then, the motor 42 is rotated to make the detection rod 43 rotate one revolution. At the same time, the water pump starts and injects the soapy water in the water tank 34 into the flipping connecting rod 45 through the water pipe 40, the liquid tank 46 and the connecting pipe 47, and sprays it onto the edge of the valve plate. The soapy water completely covers the closure between the valve plate and the inner wall of the valve body. Simultaneously, the air pump works and inflates the sealed space under the valve plate of the valve body through the air inlet 18. During this period, the camera 44 observes whether bubbles appear on the edge of the valve plate for 3 minutes. If no bubbles are generated, the air tightness of the valve body is qualified. If bubbles are generated, there is air leakage and the air tightness of the valve body is unqualified. At this time, the liquid pump works and sprays paint through the nozzle 39 to mark the valve body so that the staff can identify it.

[0051] After the test is completed, the flipping motor resets the flipping linkage 45, and the first electric telescopic rod 17 and the second electric telescopic rod 41 are activated, retracting the air inlet 18 and the detection rod 43 into the detection platform 1 and the pressure cover 31 respectively. The hydraulic push rod 30 is reset, the upper pressure plate 32 no longer presses the valve body, and the electric insertion rod 28 retracts into the rotating plate 26. At this time, the discharge electric push rod 35 is activated, and the discharge push plate 36 pushes the valve body away from the rubber pad 16. During this process, the rotating plate 26 abuts against the baffle 37 and slides against the baffle 37, pushing the valve body onto the discharge platform 6 for discharge, while the loading electric push rod 10 is reset, waiting for the next valve body to be tested.

[0052] It is worth noting that the use of the visual perception analyzer 11 mentioned in this article is existing technology and will not be elaborated further here.

[0053] The above is the overall workflow of this invention. Simply repeat this process the next time you use it.

[0054] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0055] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A valve testing device, comprising a testing platform (1), characterized in that: The testing platform (1) is provided with a pre-inspection feeding mechanism (2) on one side, and a screwing mechanism (3) is provided on the side of the testing platform (1) away from the pre-inspection feeding mechanism (2). The front side of the testing platform (1) is connected to a discharge platform (6), and the rear side of the testing platform (1) is provided with an insertion testing component (4). The insertion testing component (4) is provided with a discharge mechanism (5). The pre-inspection feeding mechanism (2) includes a placement platform (7), a pre-inspection cover (8), a feeding electric push rod (10), and a visual perception analyzer (11). The placement platform (7) is connected to one side of the inspection platform (1). The pre-inspection cover (8) is placed on the placement platform (7). The feeding electric push rod (10) is located on the side wall of the pre-inspection cover (8). The output end of the feeding electric push rod (10) faces the inspection platform (1). The visual perception analyzer (11) is located on the upper part of the pre-inspection cover (8). The output end of the visual perception analyzer (11) passes through the upper wall of the pre-inspection cover (8) and is provided with a projection plate. The insertion-type detection assembly (4) includes a detection frame (29), a hydraulic push rod (30), a pressure cover (31), and a rotary spraying mechanism (33). The detection frame (29) is connected to the rear side wall of the detection table (1). The detection frame (29) is arranged in an inverted L shape. The hydraulic push rod (30) is located on the upper part of the detection frame (29). The output end of the hydraulic push rod (30) faces the upper end face of the detection table (1). The pressure cover (31) is located on the output end of the hydraulic push rod (30). The lower part of the pressure cover (31) is provided with an upper pressure plate (32). The rotary spraying mechanism (33) is located inside the pressure cover (31). The rotary spraying mechanism (33) passes through the center of the upper pressure plate (32). The rotary spraying mechanism (33) includes a second electric telescopic rod (41), a rotary motor (42), a detection rod (43), a flipping link (45), and a camera (44). The second electric telescopic rod (41) is embedded in the center of the pressure cover (31). The rotary motor (42) is embedded in the output end of the second electric telescopic rod (41). The detection rod (43) is located at the lower part of the rotary motor (42). The flipping link (45) is embedded and rotatably mounted on the outer side wall of the detection rod (43). The flipping link (45) is symmetrically arranged. The camera (44) is embedded in the center of the lower end of the detection rod (43). The interior of the flipping link (45) is hollow. The upper end of the flipping link (45) is rotatably connected to the detection rod (43). The interior of the detection rod (43) is provided with a liquid passage groove (46). The liquid passage groove (46) is a three-way groove. The three openings of the liquid passage groove (46) penetrate the outer wall of the detection rod (43). The two symmetrical openings of the liquid passage groove (46) are respectively connected to the symmetrical flipping link (45) by connecting pipes (47). The side wall of the detection frame (29) facing the hydraulic push rod (30) is provided with a water tank (34). The water tank (34) is provided with a water pump. One end opening of the liquid passage groove (46) is connected to the water pump by a water pipe (40). The water pipe (40) penetrates the through hole of the pressure cover (31) and the upper pressure plate (32). The pre-inspection cover (8) is open on the side facing the inspection table (1). The lower center of the placement table (7) is provided with a refraction cylinder (15), which is shaped like an inverted frustum. The bottom wall of the refraction cylinder (15) is provided with a lamp (12). The upper end of the refraction cylinder (15) is provided with a transparent plate (13), which is embedded in the center of the placement table (7) and is located directly below the projection plate. The upper end of the testing platform (1) is fitted with a rubber pad (16), and the center of the rubber pad (16) is through. The upper part of the testing platform (1) is fitted with a first electric telescopic rod (17), which is located at the center of the rubber pad (16). The output end of the first electric telescopic rod (17) is opposite to the output end of the second electric telescopic rod (41). The output end of the first electric telescopic rod (17) is equipped with an air pump, and the output end of the air pump is equipped with an air inlet (18). The detection platform (1) is provided with a limit motor (19) on the side wall near the screwing mechanism (3). The output end of the limit motor (19) is provided with a screw. A limit rod (20) is engaged with the screw. The limit rod (20) slides on the rubber pad (16). The detection platform (1) is provided with a sensing strip (21). The sensing strip (21) is located on one side of the rubber pad (16) and above the limit rod (20). The sensing strip (21) is perpendicular to the limit rod (20). The limit rod (20) is provided with a pointer (22). The pointer (22) slides on the sensing strip (21).

2. The valve testing equipment according to claim 1, characterized in that: The inside of the pressure cover (31) is hollow, and the center of the upper pressure plate (32) has a through hole.

3. The valve testing equipment according to claim 2, characterized in that: The rubber pad (16) is positioned opposite to the upper pressure plate (32).

4. The valve testing equipment according to claim 3, characterized in that: The pre-inspection cover (8) is provided with a material discharge door (9) on its rear side. The output end of the electric push rod (10) for feeding is provided with a feeding push plate (14), which moves above the placement table (7) and the testing table (1).

5. A valve testing device according to claim 4, characterized in that: The screwing mechanism (3) includes a screwing frame (23), a multi-segment telescopic rod (24), a spring plate (25), and a rotating plate (26). The screwing frame (23) is connected to the side wall of the inspection table (1) away from the pre-inspection feeding mechanism (2). An electric lifting block (48) is provided on the upper part of the end of the screwing frame (23) away from the inspection table (1). The multi-segment telescopic rod (24) is located on the side wall of the electric lifting block (48) facing the inspection table (1). The spring plate (25) is located on the multi-segment telescopic rod. At the telescopic end of the telescopic rod (24), a compression spring (27) is connected between the spring plate (25) and the electric lifting block (48). The compression spring (27) is sleeved on the outside of the multi-segment telescopic rod (24). A rotary motor is provided on the inner side of the spring plate (25). The rotating plate (26) is located at the output end of the rotary motor. The rotating plate (26) is arranged opposite to the feeding push plate (14). Electric insertion rods (28) are symmetrically provided on the side wall of the spring plate (25) near the feeding push plate (14).

6. A valve testing device according to claim 5, characterized in that: The discharge mechanism (5) includes a discharge electric push rod (35), a discharge push plate (36), and a baffle (37). The discharge electric push rod (35) is mounted on the detection frame (29), and the output end of the discharge electric push rod (35) faces the rubber pad (16). The discharge push plate (36) is mounted on the output end of the discharge electric push rod (35). The baffle (37) is connected to the side of the discharge push plate (36) near the screwing mechanism (3). The baffle (37) slides through the detection frame (29), and the upper wall of the baffle (37) is higher than the screwing mechanism (3).

7. A valve testing device according to claim 6, characterized in that: The testing frame (29) is also equipped with a paint box (38), which is located on one side of the discharge push plate (36). The discharge push plate (36) is embedded with a nozzle (39) on the side wall near the rubber pad (16). The nozzle (39) is connected to the paint box (38) through a liquid pump and a liquid pipe.

Images