Valve plate sealing detection equipment

Abstract

The invention belongs to the technical field of sealing detection, and particularly relates to valve plate sealing detection equipment which comprises a base, inner plates are fixedly connected to the two sides of the top of the base, an electric control main box is fixedly connected to the tops of the inner plates, an electric control switch is installed on the front face of the electric control main box, a valve rod is rotationally connected to the bottom of the electric control main box, and a valve plate workpiece is clamped to the bottom of the valve rod. A detection point assembly is installed outside the valve plate workpiece. According to the valve plate sealing detection equipment, the valve rod pushes the valve plate workpiece to move downwards, the valve plate workpiece drives the sleeve layer, the plate sheet and the concave bag to move synchronously, when leakage needs to be detected from a certain position of the valve plate workpiece, water flow impacts the plate sheet to move, penetrates into a plate sheet hole in a certain position and then extrudes the concave bag in a certain position, and the valve plate is sealed. Needle-shaped crystallized potassium permanganate is contained in the sunken bag, the potassium permanganate becomes red when meeting water, it is determined that leakage exists in the sunken bag at a certain position through color change, and the effect of rapidly determining the leakage point is achieved.

Description

Technical Field

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

[0002] A valve plate is a device used in fluid systems to control the direction, pressure, and flow rate of fluid. It is an important component of a valve, located inside a gate valve, and works with the valve seat to control the flow of fluid or regulate its flow. The sealing test of the valve plate is particularly important at the factory, as it relates to the overall quality of the valve.

[0003] In existing technologies, sealing detection mainly involves blocking the water flow by pressing it down, and then observing whether the valve plate leaks as the water flows through it to determine whether the seal is qualified. However, during the detection process, it is difficult to detect small leaks, and it is also difficult to determine the detection point, which has certain limitations. Therefore, the present invention provides a valve plate sealing detection device to solve the above problems. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: A valve plate sealing detection device of this invention includes a base, inner plates fixed to both sides of the top of the base, an electrical control main box fixed to the top of the inner plates, a sensor and a controller inside the electrical control main box, an electrical control switch installed on the front of the electrical control main box, a valve stem connected to the bottom of the electrical control main box, a valve plate workpiece snapped into the bottom of the valve stem, a detection point assembly installed on the outside of the valve plate workpiece, the detection point assembly being used to determine the location of leakage, a valve body fixed to the top of the base and located between two outer frames, an adjustment assembly provided on the top of the valve body, the adjustment assembly ensuring the accuracy of the sealing detection by adjusting the downward pressure, a valve cover installed on the top of the adjustment assembly, the valve cover being detachable and openable to one side, the outer periphery of the valve stem connected to the valve cover, water pipes penetrating the sides of the valve body, outer frames fixed to both ends of the water pipes, two valve seats installed in the middle of the inner cavity of the valve body, and a buckle fixed to the side of the valve cover.

[0006] Furthermore, the adjusting assembly includes a limiting cylinder installed outside the valve stem. Multiple springs are fixedly connected to the top of the limiting cylinder, and the tops of the springs are connected to the bottom surface of the main electrical control box. An electric telescopic cylinder is sleeved on the bottom of the main electrical control box, and the bottom of the electric telescopic cylinder is rotatably connected to the valve stem. An upper ring is fixedly connected to the bottom of the valve cover. A first locking plate is fixedly connected below the outer edge of the upper ring. A second locking plate is slidably connected below the first locking plate. A lower ring is fixedly connected to the bottom of the second locking plate, and a swing rod is fixedly connected to the top of the second locking plate. The swing rod penetrates the interior of the first locking plate, and the first locking plate has a corresponding opening. Furthermore, the electric telescopic cylinder is T-shaped, with its bottom outer periphery snapped into the limiting cylinder. The main control box has a slot corresponding to the outer periphery of the electric telescopic cylinder, and the internal thread of the electric telescopic cylinder is adapted to the external thread of the valve stem.

[0007] Furthermore, the first and second card plates have the same dimensions, the upper and lower ring bodies have the same dimensions, and the inner wall of the first card plate is provided with anti-slip texture.

[0008] Furthermore, a pressure testing assembly is installed in the middle of the lower ring body cavity. The pressure testing assembly is used to test the sealing effect of the valve plate workpiece. The pressure testing assembly includes two vertical plates installed on the inner side wall of the valve body. An assembly seat passes through the upper part of the two vertical plates. A support plate is fixedly connected to the lower part of the assembly seat. A guide shell is fixedly connected to the bottom end of the support plate. An elastic base plate is slidably connected to the inner cavity of the guide shell.

[0009] Furthermore, the elastic base plate is U-shaped, and the assembly base is fixedly connected to the vertical plate.

[0010] Furthermore, the support plate is fixed to the bottom of the assembly base, and the upper surface of the lower ring body is provided with a slot corresponding to the assembly base.

[0011] Furthermore, a float assembly is installed on the outside of the valve seat. The float assembly is used to indicate the intensity of water flow when the detection side is detected by floating. The float assembly includes a ring hoop installed on the outside of the valve seat. Multiple connecting strips are elastically connected to the inner wall of the ring hoop. A float is snapped in the middle of the multiple connecting strips. The ring hoop is connected to a water pipe. The water pipe consists of two parts, which are evenly located on both sides of the valve seat. A thin tube is connected to the inner cavity of the water pipe on one side.

[0012] Furthermore, the diameter of the thin tube is adapted to the inner wall diameter of the water pipe, the float is made of plastic, the valve seat has a hole on its side that is adapted to the diameter of the water pipe, the float is made of rubber, and the multiple connecting strips are evenly distributed with reference to the center of the float.

[0013] Furthermore, the valve plate workpiece has a detection point assembly on its exterior, the detection point assembly including multiple recessed bladders installed on both sides, and a sleeve is sleeved on the exterior of the valve stem, with plates fixed to both sides of the sleeve.

[0014] The beneficial effects of this invention are as follows: 1. The valve plate sealing testing device of the present invention involves the valve plate workpiece contacting the middle of the guide shell, causing the valve plate workpiece to push the elastic base plate downwards. The elastic base plate moves downwards from inside the elastic guide plate. When the elastic base plate reaches its maximum sliding distance, it continues to be compressed and gradually lengthens. The support plate supports the elastic guide plate, and the elastic base plate is in contact with the valve plate workpiece. When the valve plate workpiece falls onto the valve seat, the elastic base plate is located at the bottom of the valve seat. At this time, water is still being added to one side of the water pipe, and the water flows through the middle of the valve seat. The elastic base plate contacts the water flow. The sound of the impact is compared with the sound of the water flow impacting the valve plate workpiece when the pressure test component is not added for the first time. The sound of the two sounds is carefully listened to to see if there is a change. If the sounds are the same, the pressure is different but the sealing performance is the same. If the sounds are different, the pressure is different but the sealing performance is different. This makes it easy to conclude whether the pressure on the water flow changes in different sealing environments.

[0015] 2. The valve plate sealing detection device of the present invention uses a valve stem to push the valve plate workpiece downwards. The valve plate workpiece drives the sleeve, plate, and recessed bladder to move synchronously. When a leak needs to be detected from a certain point on the valve plate workpiece, the water flow first impacts the plate, passes through the plate hole at a certain point, and then squeezes the recessed bladder at that point. The recessed bladder contains needle-shaped potassium permanganate crystals. Potassium permanganate turns red when it comes into contact with water. By observing the color change, it is determined that there is a leak in the recessed bladder at a certain point, which has the effect of quickly determining the leak point. Attached Figure Description

[0016] The invention will now be further described with reference to the accompanying drawings.

[0017] Figure 1 This is an overall schematic diagram of the present invention; Figure 2 This is a schematic diagram of the fit between the limiting cylinder and the valve stem of the present invention; Figure 3 This is a schematic diagram of the adjustment component and valve stem of the present invention. Figure 4 This is a cross-sectional schematic diagram of the valve cover of the present invention; Figure 5 This is a partially enlarged schematic diagram of the card plate in the adjustment component of the present invention; Figure 6 This is a schematic diagram of the valve plate workpiece and valve body mating structure of the present invention; Figure 7 This is a schematic diagram of the fit between the upper and lower ring bodies of the present invention; Figure 8 This is a schematic diagram of the detection point structure of the present invention; Figure 9 This is a schematic diagram of the pressure testing component structure of the present invention; Figure 10 This is a schematic diagram of the float assembly structure of the present invention.

[0018] In the diagram: 1. Base; 3. Outer frame; 4. Inner panel; 5. Electrical control main box; 51. Electric telescopic cylinder; 52. Limiting cylinder; 53. Spring; 54. Upper ring body; 55. Lower ring body; 56. Clamping plate one; 57. Swing rod; 58. Clamping plate two; 541. Vertical plate; 542. Assembly base; 543. Support plate; 544. Guide shell; 545. Elastic base plate; 6. Electrical control switch; 7. Valve stem; 8. Valve plate workpiece; 81. Sleeve layer; 82. Plate; 83. Recessed bladder; 9. Valve body; 10. Valve seat; 101. Ring clamp; 102. Connecting strip; 103. Float ball; 104. Water pipe; 105. Thin tube; 11. Valve cover; 12. Buckle. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0020] Combination Figure 1 and Figure 2 , Figure 6 As shown in the embodiment of the present invention, a valve plate sealing detection device includes a base 1. Inner plates 4 are fixedly connected to both sides of the top of the base 1. An electrical control main box 5 is fixedly connected to the top of the inner plates 4. The electrical control main box 5 contains sensors and a controller. An electrical control switch 6 is installed on the front of the electrical control main box 5. A valve stem 7 is connected to the bottom of the electrical control main box 5. A valve plate workpiece 8 is snapped onto the bottom of the valve stem 7. A detection point assembly is installed on the outside of the valve plate workpiece 8. The detection point assembly is used to determine the location of leakage. The base 1 is located on top of the two outer frames. A valve body 9 is fixedly connected between 3. An adjustment component is provided on the top of the valve body 9. The adjustment component ensures the accuracy of the sealing test by adjusting the force when pressing down. A valve cover 11 is installed on the top of the adjustment component. The valve cover 11 is detachable and can be opened to one side. The outer periphery of the valve stem 7 is connected to the valve cover 11. Water pipes 104 are connected through the sides of the valve body 9. The two ends of the water pipes 104 are fixedly connected to the outer frame 3. Two valve seats 10 are installed in the middle of the inner cavity of the valve body 9. A buckle 12 is fixedly connected to the side of the valve cover 11.

[0021] When performing a sealing test on the valve plate workpiece 8, it is necessary to first press down to make the valve plate workpiece 8 snap into the valve seat 10. Then, water is passed through one side of the water pipe 104 to perform the sealing test. Therefore, in this embodiment of the invention, the equipment is first applied to the testing factory of the valve plate workpiece 8. The valve cover 11 is opened to the other side, and the buckle 12 is disengaged from the other side. At this time, the valve plate workpiece 8 that needs to be sealed is snapped into the bottom end of the valve stem 7. Then, the valve stem 7 is connected to the bottom of the electrical control main box 5. The valve cover 11 is closed to form a whole. After the electrical control main box 5 is started, it drives the valve stem 7 to move downward. The valve stem 7 squeezes the valve plate workpiece 8 to move downward. At this time, water is passed through the inside of the water pipe 104 from one side. After the valve plate workpiece 8 moves to the position between the two valve seats 10, if water can flow in the middle of the valve plate workpiece 8, it means that the sealing performance of the valve plate workpiece 8 is unqualified. Otherwise, the sealing performance is qualified. During the testing process, the downward pressing action of the valve stem 7 causes the entire valve cover 11 to move downward. After the valve cover 11 and the valve body 9 are combined, the adjusting component between the valve cover 11 and the valve body 9 is squeezed. The shape of the adjusting component changes after being squeezed. This change in shape can buffer the magnitude of the driving force during the downward pressing, and at the same time, it makes it easier to see whether the valve cover 11 and the valve body 9 are completely locked. This prevents gaps from existing between the valve cover 11 and the valve body 9, ensuring the accuracy of the sealing test, and enabling the equipment to perform the purpose of sealing test. It should be noted that the valve stem 7 is compatible with the internal thread of the electrical control main box 5. After detection, the location of the leak is determined by the detection point component. The location of the leak is then determined by the color change of the leak point, making it easier to replace or repair it.

[0022] Combination Figures 3 to 7 As shown, the adjusting assembly includes a limiting cylinder 52 installed outside the valve stem 7. Multiple springs 53 are fixedly connected to the top of the limiting cylinder 52, and the tops of the springs 53 are connected to the bottom surface of the main control box 5. An electric telescopic cylinder 51 is sleeved on the bottom of the main control box 5, and the bottom of the electric telescopic cylinder 51 is rotatably connected to the valve stem 7. An upper ring body 54 is fixedly connected to the bottom of the valve cover 11. A first retaining plate 56 is fixedly connected below the outer edge of the upper ring body 54. A second retaining plate 58 is slidably connected below the first retaining plate 56. A lower ring body 55 is fixedly connected to the bottom of the second retaining plate 58, and a swing arm is fixedly connected to the top of the second retaining plate 58. The moving rod 57 and the swing rod 57 pass through the interior of the first clamping plate 56. The first clamping plate 56 has a slot corresponding to the swing rod 57. The electric telescopic cylinder 51 is "T" shaped. The bottom outer periphery of the electric telescopic cylinder 51 is clamped to the limiting cylinder 52. The main control box 5 has a slot corresponding to the outer periphery of the electric telescopic cylinder 51. The internal thread of the electric telescopic cylinder 51 is compatible with the external thread of the valve stem 7. The first clamping plate 56 and the second clamping plate 58 have the same specifications and dimensions. The upper ring body 54 and the lower ring body 55 have the same specifications and dimensions. The inner wall of the first clamping plate 56 is provided with anti-slip texture.

[0023] During operation, before performing a sealing test on the valve plate workpiece 8, it needs to be conducted in a closed environment to prevent gas leakage from interfering with the sealing test. The valve cover 11 is designed to be detachable for easy installation of the valve stem 7 and the valve plate workpiece 8. After disassembly, it needs to be sealed promptly, and the downward pressure needs to be buffered to avoid excessive fluid fluctuations caused by excessive downward pressure, which would affect the accuracy of the sealing test. Using this embodiment, the valve stem 7 moves downward along the inner wall of the electric telescopic cylinder 51, driving the limiting cylinder 52 downward. The limiting cylinder 52 presses against the valve cover 11, and the spring 53 gradually lengthens as the limiting cylinder 52 moves. The valve cover 11 presses against the upper ring body 54, which in turn presses against the first clamping plate 56. The first clamping plate 56 then presses against the second clamping plate 58, and the second clamping plate 58 presses against the first clamping plate 56. After being pressed together, they gradually form a horizontal shape. The swing rod 57 slides along the groove of the clamping plate 56. The friction of the groove of the clamping plate 56 prevents the swing rod 57 from quickly changing from an inclined shape to a vertical shape. The change in the state of the swing rod 57 can be used to understand the degree of pressure change. After the swing rod 57 is vertical, the valve cover 11 and the valve body 9 are closed. The cooperation between the swing rod 57 and the spring 53 makes the force when pressing down buffered, which has the effect of indirect pressing and prevents air from entering during subsequent sealing tests and affecting the detection accuracy. It should be noted that the swing rod 57 is inclined by default. When the swing rod 57 is inclined, the upper ring 54 cannot directly connect with the lower ring 55. The swing rod 57 acts as a blockage when it is inclined. When the swing rod 57 changes from an inclined shape to a vertical shape, the blocking effect disappears, and the upper ring 54 and the lower ring 55 form a closure, which facilitates the decomposition of force.

[0024] Combination Figure 6 or Figure 9 As shown, a pressure testing assembly is installed in the middle of the inner cavity of the lower ring body 55. The pressure testing assembly is used to test the sealing effect of the valve plate workpiece 8. The pressure testing assembly includes two vertical plates 541 installed on the inner side wall of the valve body 9. An assembly seat 542 passes through the upper part of the two vertical plates 541. A support plate 543 is fixedly connected to the lower part of the assembly seat 542. A guide shell 544 is fixedly connected to the bottom end of the support plate 543. An elastic base plate 545 is slidably connected to the inner cavity of the guide shell 544. The elastic base plate 545 is U-shaped. The assembly seat 542 is fixedly connected to the vertical plates 541. The support plate 543 is fixedly connected to the bottom of the assembly seat 542. A slot corresponding to the assembly seat 542 is opened on the upper surface of the lower ring body 55.

[0025] During operation, when inspecting the valve plate workpiece 8, there is a possibility that the sealing performance may vary depending on the pressure of the water flow. When pressure testing of the fluid is required, this embodiment of the invention uses a vertical plate 541 and an assembly base 542 secured inside the lower ring 55. The valve plate workpiece 8 gradually moves downwards, contacting the middle of the guide shell 544. The valve plate workpiece 8 pushes the elastic base plate 545 downwards, separating it from the guide shell 544. When the elastic base plate 545 reaches its maximum sliding distance, it continues to be compressed and gradually lengthens. The support plate 543 supports the guide shell 544. The elastic base plate 545 is attached to the valve plate workpiece 8. When the valve plate workpiece 8 falls down onto the valve seat 10, the elastic base plate 545 is located at the bottom of the valve seat 10. At this time, water is still added to one side of the water pipe 104. The water flows through the middle of the valve seat 10, and the elastic base plate 545 comes into contact with the water flow. The sound of the impact is compared with the sound of the water flow impacting the valve plate workpiece 8 when the pressure test component was not added for the first time. Listen carefully to see if there is a change in the sound. If the sound is the same, the pressure is different but the sealing performance is the same. If the sound is different, the pressure is different but the sealing performance is different. This makes it easier to conclude whether the pressure on the water flow changes in different sealing environments. It should be noted that this conclusion is based on the premise that the first and second sealing tests are qualified. If the first sealing test fails, there is no need to perform a second pressure test, because the pressure on the fluid may be disrupted by the horizontal water flow, thus affecting the sealing test. In this case, the valve plate part 8 needs to be replaced. If the first sealing test is qualified, but the second test is unqualified, it indicates that there is a leak in the elastic base plate 545. After the pressure test component is added for the second time, the water flow will directly impact the elastic base plate 545. The elastic base plate 545 is isolated in the middle of the valve seat 10. The elastic base plate 545 is first impacted by the water flow, and deformed after being impacted. Then it is isolated by the valve plate workpiece 8. At this time, observe the indentation of the elastic base plate 545 impacted by the water flow. If it is unqualified, there will be moisture on the valve plate workpiece 8. Because the moisture on the valve plate workpiece 8 indicates that there is a leak in the elastic base plate 545, it should be replaced in time.

[0026] Combination Figure 10As shown, a float assembly is installed on the outside of the valve seat 10. The float assembly is used to indicate the intensity of water flow during detection by floating. The float assembly includes a ring 101 installed on the outside of the valve seat 10. Multiple connecting strips 102 are elastically connected to the inner wall of the ring 101. A float 103 is snapped into the center of the multiple connecting strips 102. The ring 101 is connected to a water pipe 104. The water pipe 104 consists of two parts, which are evenly located on both sides of the valve seat 10. A thin tube 105 is inserted into the inner cavity of one side of the water pipe 104. The diameter of the thin tube 105 is adapted to the inner diameter of the water pipe 104. The float 103 is made of plastic. A hole with a diameter adapted to the water pipe 104 is opened on the side of the valve seat 10. The connecting strips 102 are made of rubber. The multiple connecting strips 102 are evenly distributed with reference to the center of the float 103.

[0027] When testing the sealing performance of valve plate workpiece 8 during operation, it is difficult to detect minute leaks by observation alone, and the effect of sealing performance testing is not significant enough. Therefore, in this embodiment of the invention, water flows through water pipe 104 towards valve seat 10. When float ball 103 is impacted, float ball 103 shakes. If it is in a sealed state, the ripples in the water are very weak and the force is insufficient to push float ball 103 to move. At this time, float ball 103 will stand up and be located in the middle of the water flow without shaking. If the valve plate workpiece 8 and the valve seat 10 are not sealed when they are combined, water will flow through the valve plate workpiece 8. When the water flows through, the ripples in the water will cause the float ball 103 to shake. When the float ball 103 shakes, it rubs against the valve plate workpiece 8, causing the valve plate workpiece 8 to vibrate. After the vibration, the electrical signal received by the sensor is output to the screen of the main control box 5 through the processor and the execution unit. After the water flows through the valve plate workpiece 8, it enters the thin tube 105. The water flows out from the top of the thin tube 105, which makes it easy to clearly understand whether it is sealed. The water flow can also be directed to the water pipe 104 for secondary circulation, thus recycling the water and making it easier to judge the sealing effect of the valve plate workpiece 8. Furthermore, when the float 103 vibrates, it will rub against the side wall of the valve plate workpiece 8, thus cleaning the side of the valve plate workpiece 8 and reducing the probability of moss and other microorganisms appearing on the side wall of the valve plate workpiece 8.

[0028] like Figure 8 As shown, the valve plate workpiece 8 has a detection point assembly on its exterior. The detection point assembly includes multiple recessed bladders 83 installed on both sides. The valve stem 7 is sleeved with a sleeve layer 81, and plates 82 are fixed to both sides of the sleeve layer 81. During operation, when conducting a water-based sealing test, the overall test result of the valve plate workpiece 8 is qualified. However, there may be a small amount of leakage in reality. For example, a small water flow may leak from a certain point on the valve plate workpiece 8, which is difficult to detect with the naked eye, making it inconvenient to locate the test point later. In this embodiment of the invention, the valve stem 7 pushes the valve plate workpiece 8 downward. The valve plate workpiece 8 drives the sleeve 81, plate 82, and recessed bladder 83 to move synchronously. When a leak needs to be detected from a certain point on the valve plate workpiece 8, the water flow first impacts the plate 82, passes through the hole of the plate 82 at a certain point, and then squeezes the recessed bladder 83 at that point. The recessed bladder 83 contains needle-like potassium permanganate crystals. Potassium permanganate turns red when it comes into contact with water. By observing the color change, it can be determined that there is a leak in the recessed bladder 83 at a certain point, which has the effect of quickly identifying the leak point. It should be noted that when the center of the recessed bladder 83 is recessed, the water flowing into it is not easy to flow out, thus avoiding the reddening of the recessed bladder 83 at a certain point and causing interference to other locations. When there is a small amount of leakage in the gap between the valve plate workpiece 8 and the valve seat 10, the ring clamp 101 will block it.

[0029] Working Principle: Before performing a sealing test on the valve plate workpiece 8, it needs to be done in a closed environment to prevent gas leakage from interfering with the sealing test. The valve cover 11 is designed to be detachable for easy installation of the valve stem 7 and the valve plate workpiece 8. After detachment, it needs to be sealed promptly, and the downward pressure needs to be buffered to avoid excessive fluid fluctuations caused by excessive downward pressure, which would affect the accurate sealing test. Using this embodiment, the valve stem 7 moves downward along the inner wall of the electric telescopic cylinder 51, driving the limiting cylinder 52 downward. The limiting cylinder 52 presses against the valve cover 11, and the spring 53 gradually lengthens as the limiting cylinder 52 moves. The valve cover 11 presses against the upper ring body 54, which in turn presses against the first clamping plate 56. The first clamping plate 56 then presses against the second clamping plate 58, and the second clamping plate 58 presses against the first clamping plate 56. After being pressed together, they gradually form a horizontal shape. The swing rod 57 slides along the groove of the clamping plate 56. The friction of the groove of the clamping plate 56 prevents the swing rod 57 from quickly changing from an inclined shape to a vertical shape. The change in the state of the swing rod 57 can be used to understand the degree of pressure change. After the swing rod 57 is vertical, the valve cover 11 and the valve body 9 are closed. The cooperation between the swing rod 57 and the spring 53 makes the force when pressing down buffered, which has the effect of indirect pressing and prevents air from entering during subsequent sealing tests and affecting the detection accuracy. It should be noted that the swing rod 57 is inclined by default. When the swing rod 57 is inclined, the upper ring 54 cannot directly connect with the lower ring 55. The swing rod 57 acts as a blockage when it is inclined. When the swing rod 57 changes from an inclined shape to a vertical shape, the blocking effect disappears, and the upper ring 54 and the lower ring 55 form a closure, which facilitates the decomposition of force.

[0030] During the inspection and processing of valve plate workpiece 8, there is a possibility that the sealing performance may vary depending on the pressure of the water flow. When it is necessary to test the pressure of the fluid, in this embodiment of the invention, the vertical plate 541 and the assembly base 542 are locked inside the lower ring body 55. The valve plate workpiece 8 gradually moves downward, and the valve plate workpiece 8 contacts the middle of the guide shell 544. The valve plate workpiece 8 pushes the elastic base plate 545 to gradually move downward. The elastic base plate 545 moves downward from inside the guide shell 544 and separates. When the elastic base plate 545 moves to the maximum sliding distance, the elastic base plate 545 is still continuously squeezed and gradually lengthens. The support plate 543 supports the guide shell 544. The base plate 545 is attached to the valve plate workpiece 8. When the valve plate workpiece 8 falls down onto the valve seat 10, the elastic base plate 545 is located at the bottom of the valve seat 10. At this time, water is still added to one side of the water pipe 104. The water flows through the middle of the valve seat 10, and the elastic base plate 545 contacts the water flow. The sound of the impact is compared with the sound of the water flow impacting the valve plate workpiece 8 when the pressure test component was not added for the first time. Listen carefully to see if there is a change in the sound. If the sound is the same, the pressure is different but the sealing is the same. If the sound is different, the pressure is different but the sealing is different. This makes it easy to know whether the pressure on the water flow changes in different sealing environments. It should be noted that the premise of this conclusion is that the first and second sealing are qualified. During the water sealing test, the overall test result of the valve plate workpiece 8 is qualified. However, there may be a small amount of leakage in reality. For example, if the water flow is small, it may leak from a certain point on the valve plate workpiece 8, which is difficult to detect with the naked eye. This makes it inconvenient to find the test point later, and there is a problem of not being able to locate the test point. Using the embodiment of the present invention, the valve stem 7 pushes the valve plate workpiece 8 downward. The valve plate workpiece 8 drives the sleeve 81, plate 82 and recessed bladder 83 to move synchronously. When a leak needs to be detected from a certain point on the valve plate workpiece 8, the water flow first impacts the plate 82 and moves. After passing through the hole of the plate 82 at a certain point, it squeezes the recessed bladder 83 at that point. The recessed bladder 83 contains needle-shaped potassium permanganate crystals. Potassium permanganate turns red when it comes into contact with water. By observing the color change, it is determined that there is a leak in the recessed bladder 83 at a certain point, which has the effect of quickly determining the leak point. It should be noted that when the middle of the recessed bladder 83 is recessed, the water flowing into it is not easy to flow out, so as to avoid the recessed bladder 83 turning red at a certain point flowing to other positions and causing interference.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A valve plate sealing detection device, characterized in that: The invention comprises a base (1), inner plates (4) are fixedly connected to both sides of the top of the base (1), an electric control main box (5) is fixedly connected to the top of the inner plate (4), a sensor and a controller are contained in the electric control main box (5), an electric control switch (6) is installed on the front of the electric control main box (5), a valve stem (7) is connected to the bottom of the electric control main box (5), a valve plate workpiece (8) is clamped on the bottom of the valve stem (7), a detection point component is installed on the outside of the valve plate workpiece (8), and the detection point component is used to determine the location of the leakage, a valve body (9) is fixedly connected to the top of the base (1) and located between the two outer frames (3), An adjusting component is arranged on the top of the valve body (9), and the adjusting component ensures the accuracy of the sealing test by adjusting the force when pressing down. A valve cover (11) is installed on the top of the adjusting component, and the valve cover (11) is detachable and can be opened to one side. The periphery of the valve stem (7) is connected to the valve cover (11). The sides of the valve body (9) are penetrated by water pipes (104), and both ends of the water pipes (104) are fixedly connected to the outer frame (3). Two valve seats (10) are installed in the middle of the inner cavity of the valve body (9), and the side of the valve cover (11) is fixedly connected with a buckle (12).

2. A valve plate sealing detection device according to claim 1, characterized in that: The regulating assembly comprises a limit cylinder (52) mounted on the outside of the valve stem (7); a plurality of springs (53) are fixedly connected to the top of the limit cylinder (52); the tops of the plurality of springs (53) are connected to the bottom surface of the electric control main box (5); an electric telescopic cylinder (51) is sleeved on the bottom of the electric control main box (5); the bottom of the electric telescopic cylinder (51) is connected to the valve stem (7); an upper ring body (54) is fixedly connected to the bottom of the valve cover (11); a first clamping plate (56) is fixedly connected to the lower outer edge of the upper ring body (54); a second clamping plate (58) is slidably connected to the lower part of the first clamping plate (56); a lower ring body (55) is fixedly connected to the bottom of the second clamping plate (58); a swing rod (57) is fixedly connected to the top of the second clamping plate (58); the swing rod (57) passes through the inside of the first clamping plate (56); and a notch corresponding to the swing rod (57) is provided on the first clamping plate (56).

3. A valve plate sealing detection device according to claim 2, characterized in that: The electric telescopic cylinder (51) is in a "T" shape, the outer periphery of the bottom of the electric telescopic cylinder (51) is clamped to the limit cylinder (52), a notch corresponding to the outer periphery of the electric telescopic cylinder (51) is provided in the electric control main box (5), and the internal thread of the electric telescopic cylinder (51) is compatible with the external thread of the valve stem (7).

4. A valve plate sealing detection device according to claim 2, characterized in that: The first card plate (56) and the second card plate (58) have the same specifications and dimensions, the upper ring body (54) and the lower ring body (55) have the same specifications and dimensions, and the inner wall of the first card plate (56) is provided with anti-slip grooves.

5. The valve plate sealing detection device according to claim 2, characterized in that: A pressure test assembly is installed in the middle of the inner cavity of the lower ring body (55). The pressure test assembly is used to detect the sealing effect of the valve plate workpiece (8). The pressure test assembly includes two vertical plates (541) installed on the inner wall of the valve body (9). An assembly seat (542) penetrates the upper part of the two vertical plates (541). A support plate (543) is fixedly connected below the assembly seat (542). A guide shell (544) is fixedly connected to the bottom end of the support plate (543). The inner cavity of the guide shell (544) is slidably connected to an elastic bottom plate (545).

6. A valve plate sealing detection device according to claim 5, characterized in that: The elastic bottom plate (545) is in a "U" shape, and the assembly seat (542) is fixedly connected to the vertical plate (541).

7. The valve plate sealing detection device according to claim 5, characterized in that: The support plate (543) is fixedly connected to the bottom of the assembly seat (542), and a slot corresponding to the assembly seat (542) is provided on the upper surface of the lower ring body (55).

8. The valve plate sealing detection device according to claim 1, characterized in that: A float assembly is installed on the outside of the valve seat (10), and the float assembly is used to reflect the strength of water flow during water testing by floating. The float assembly includes a hoop (101) installed on the outside of the valve seat (10), and the inner wall of the hoop (101) is elastically connected to a plurality of connecting strips (102), and a float (103) is clamped in the middle of the plurality of connecting strips (102). The hoop (101) is connected to a water pipe (104), and the water pipe (104) is composed of two parts, and the two parts are evenly located on both sides of the valve seat (10), and a thin tube (105) is connected to the inner cavity of the water pipe (104) on one side.

9. A valve plate sealing detection device according to claim 8, characterized in that: The diameter of the capillary tube (105) matches the inner wall diameter of the water pipe (104); the float (103) is made of plastic; a hole matching the diameter of the water pipe (104) is provided on the side of the valve seat (10); the float (103) is made of rubber; and the plurality of connecting strips (102) are evenly distributed with the center of the float (103) as a reference.

10. The valve plate sealing detection device according to claim 1, characterized in that: The valve plate workpiece (8) has a detection point assembly on the outside, the detection point assembly includes a plurality of recessed bags (83) installed on both sides, the valve stem (7) is sleeved with a sleeve layer (81) on the outside, and plates (82) are fixedly connected to both sides of the sleeve layer (81).

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