Sealing performance detection equipment for valve production

Abstract

The invention relates to the technical field of valve production, in particular to sealing performance detection equipment for valve production, which comprises a detection table, the detection table comprises a base plate, the top surface of the base plate is slidably connected with a carrier plate, a detection mechanism is fixed on the base plate, the detection mechanism comprises a [-shaped frame, the [-shaped frame is fixedly connected with a sleeve, and the sleeve is fixedly connected with the base plate. Three plugging balls are fixedly connected to the outer side of the sleeve in a communicating mode, a transmission column is rotationally connected to the interior of the sleeve, and a rotary knob rod is fixed to the bottom of the transmission column. According to the invention, a knob rod on the detection mechanism drives a valve rod to rotate, a valve core opening and closing working condition during use of the valve is conveniently simulated, an air bag is circularly pushed and pressed through an electric push rod, the air pressure of the detection valve is increased by air in the air bag, and the working condition of three-dimensional pressure fluctuation in the valve is conveniently simulated; the sealing performance detection of the valve can be carried out under the simulated actual working condition of the valve, and the accuracy of the detection result can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of valve production, in particular to a sealing detection device used in valve production. Background Art

[0002] Valves are devices used to control the flow of fluids such as liquids and gases. According to their different structures and functions, valves can be divided into various types such as gate valves, ball valves, butterfly valves, etc. Among them, the three-way T-type ball valve is a commonly used ball valve. The fluid flow direction is switched by rotating the ball valve core every 90 degrees. The sealing performance of the valve directly affects the efficiency of the production process and the quality of the product. If the valve seal is poor, it may cause fluid leakage and result in material waste. Therefore, the sealing performance of the valve needs to be tested during the valve production process.

[0003] Most of the existing valve sealing testing equipment mainly detects the sealing of the valve by inflating and pressurizing the valve through the air pipe. However, this type of testing equipment is mainly suitable for valves with two interfaces and cannot detect three-way ball valves with multiple interfaces. There are detection limitations. In addition, during the actual use of the valve, the opening and closing of the pump will cause the pressure of the fluid impacting the valve to fluctuate, and the ball valve core will rotate when the fluid flow direction is switched. Most testing equipment cannot simulate the sealing of the valve under multiple working conditions such as pressure fluctuations and rotating valve cores, and it is easy for the test results to be inconsistent with the sealing under actual working conditions. Summary of the Invention

[0004] The purpose of the present invention is to provide a sealing detection device for valve production to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A sealing detection device for valve production, comprising:

[0007] A testing platform, comprising a base plate, a top surface of which is slidably connected to a carrier plate;

[0008] The detection mechanism includes a U-shaped frame fixed to the base plate, a sleeve fixed to the U-shaped frame, three blocking balls fixed to the outside of the sleeve, an L-shaped hole 1 connected to the valve interface is opened inside the blocking ball, a transmission column is rotatably connected to the inside of the sleeve, an L-shaped hole 2 is opened inside the transmission column and communicates with the inside of the sleeve, and a knob rod is fixed to the bottom of the transmission column;

[0009] Motor 2 is fixed to the yoke and can drive the transmission column to rotate;

[0010] The double-headed cylinder and the second cylinder are both fixed to the test table and can drive the blocking ball to move;

[0011] The air inlet pipe is fixed to the test bench and can supply air to the second L-shaped hole;

[0012] The pressurizing component is arranged on the outside of the air intake pipe and includes an air bag and an electric push rod.

[0013] Furthermore, the knob rod includes a connecting rod fixedly connected to the transmission column, and a U-shaped block is fixed at one end of the connecting rod.

[0014] Furthermore, a circular cavity communicating with the L-shaped hole is provided in the middle of the blocking ball, and an air pressure sensor is installed inside the circular cavity.

[0015] Furthermore, a plurality of cavities are provided on the top surface of the carrier plate, a motor 1 is fixed to one end of the base plate, and a screw rod capable of driving the carrier plate to move is fixed to the output end of the motor 1.

[0016] Furthermore, the double-headed cylinder is fixedly connected to the base plate, and the output ends of the double-headed cylinder and cylinder 2 are respectively fixed to the blocking balls at corresponding positions.

[0017] Furthermore, one end of the L-shaped hole on the blocking ball is connected and fixed with a hose, and the hose is connected and fixed with the sleeve.

[0018] Furthermore, a plurality of stoppers are fixed on the inner side of the sleeve, and the stoppers are rotatably abutted against the transmission column.

[0019] Furthermore, an L-shaped plate is fixed on one side of the base plate, the air inlet pipe is fixed to the L-shaped plate, and a cylinder is connected and fixed at the bottom of the air inlet pipe.

[0020] Furthermore, a transmission tube is connected and fixed to the top surface of the transmission column, the transmission tube is connected and rotatably connected to the cylinder, and the cylinder is connected and fixed to the airbag.

[0021] Furthermore, the outer side of the airbag is sleeved with a support tube, the output end of the electric push rod is fixedly connected to the airbag, and the support tube and the electric push rod are both fixedly connected to the L-shaped plate.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. Use cylinder 2 to move a blocking ball to the middle of the base plate. The carrier plate moves the three-way ball valve toward the blocking ball, so that the blocking ball seals the C interface of the three-way ball valve. The double-headed cylinder moves the other two blocking balls to block the A and B interfaces of the three-way ball valve (refer to the specific valve interface position mark for reference). Figure 8), at this time, the A, B, and C interfaces on the valve are in a connected state, and the airflow inside the intake pipe is filled into the valve from the B interface of the valve through the transmission pipe, the L-shaped hole 2 on the transmission column, the hose, and the L-shaped hole 1 on the blocking ball. By filling the valve with air at a certain pressure, the overall sealing of the valve is evaluated based on whether the reading of the air pressure sensor inside the blocking ball decreases over a period of time, thereby realizing automatic detection of the overall sealing of the three-way ball valve;

[0024] When the valve placed on the carrier plate is a valve with two interfaces (referred to as a two-way valve), the two interfaces of the two-way valve can be sealed by a double-headed cylinder with two sealing balls. Similarly, the sealing performance of the two-way valve can be evaluated by supplying air to the inside of the two-way valve to observe whether the valve maintains a stable pressure. This enables the testing equipment to be applicable to the sealing performance testing of both three-way ball valves and two-way valves, helping to solve the problem that traditional testing equipment is difficult to detect valves with multiple interfaces, thereby improving the wide range of the testing range of the testing equipment.

[0025] 2. The space between the sleeve and the transmission column is divided into three fan-shaped chambers by multiple blocks. Each chamber is connected to the corresponding position hose. At the same time, a knob rod that can be engaged with the valve stem is fixed at the bottom of the transmission column. Motor 2 drives the transmission column to rotate 90 degrees, 180 degrees and 270 degrees counterclockwise in succession, so that the transmission column and the knob rod successively move the valve stem on the valve to the same angle, thereby enabling the ball valve core to close the B interface, C interface and A interface in succession. Moreover, after the interfaces at different positions are closed, the hose and chamber connected to the closed interface will separately supply air to the closed interface for pressurization for sealing detection, thereby realizing separate sealing detection of the three interfaces on the three-way valve, which is convenient for users to detect the sealing conditions of different positions of the valve. By combining the air tightness detection of the entire valve with the sealing detection of the local area of ​​the valve, it is helpful to determine the specific leakage area of ​​the valve with poor sealing.

[0026] 3. The transmission column is driven by motor 2 to rotate forward and reverse. The transmission column drives the valve stem to rotate forward and reverse through the knob rod to simulate the opening and closing of the valve core. After multiple valve opening and closing simulations, the detection mechanism is used to continue to detect the sealing of the valve, thereby realizing the valve sealing test under the actual working conditions of the rotating valve core, which helps to improve the accuracy of the valve sealing test results.

[0027] 4. An airbag is fixed on the outside of the intake pipe. During the air supply test from the intake pipe to the valve, the inside of the airbag will be filled with air at the same time. During the specific valve sealing test, after the intake pipe delivers air at a preset pressure to the inside of the valve, the intake pipe stops supplying air, and then the output end of the electric push rod cyclically extends and shortens, so that the circular plate can reciprocately squeeze the airbag, which helps the air inside the airbag to be cyclically injected into and extracted from the valve, thereby making the air pressure of the test valve fluctuate, simulating the actual working condition of the fluid pressure fluctuation in the valve, thereby realizing the valve sealing test under the working condition of air pressure fluctuation, and further improving the accuracy of the valve sealing test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the overall structure of the present invention and the valve;

[0030] Figure 3 It is a schematic diagram of the structure of the detection platform in the present invention;

[0031] Figure 4 It is a schematic diagram of the structure of the test platform, double-headed cylinder and cylinder II in the present invention;

[0032] Figure 5 It is a schematic structural diagram of the detection mechanism in the present invention;

[0033] Figure 6 This is a schematic diagram of the internal structure of the blocking ball in the present invention;

[0034] Figure 7 It is a schematic diagram of the structure of the sleeve and the transmission column in the present invention;

[0035] Figure 8 It is a table diagram of the switch conditions of the interfaces in different directions of the three-way ball valve in the present invention.

[0036] In the figure: 100, testing platform; 110, substrate; 120, carrier plate; 121, cavity; 130, L-shaped plate; 131, circular hole; 140, motor 1; 141, screw; 150, notch 1; 200, testing mechanism; 210, yoke; 211, shield; 220, sleeve; 221, stopper; 230, sealing ball; 231, L-shaped hole 1; 232, hose; 233, circular cavity; 234. Air pressure sensor; 240. Transmission column; 241. L-shaped hole 2; 250. Knob rod; 251. Connecting rod; 252. 匚-shaped block; 260. Transmission pipe; 300. Motor 2; 400. Double-headed cylinder; 410. Connecting column; 500. Cylinder 2; 600. Inlet pipe; 610. Cylinder body; 700. Pressurization assembly; 710. Support cylinder; 720. Airbag; 730. Electric push rod. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] For example 1, please refer to Figure 1 - Figure 8 In an embodiment of the present invention, a sealing detection device for valve production includes a detection platform 100, which includes a base plate 110. The top surface of the base plate 110 is slidably connected to a carrier plate 120 capable of storing a three-way ball valve. A detection mechanism 200 is fixed to the outside of the base plate 110. The detection mechanism 200 includes a 匚-shaped frame 210 fixedly connected to the base plate 110, a sleeve 220 is fixedly connected to the 匚-shaped frame 210, and three blocking balls 230 are fixedly connected to the outside of the sleeve 220. An L-shaped hole 1 231 connected to the valve interface is opened inside the blocking ball 230, a transmission column 240 is rotatably connected to the inside of the sleeve 220, an L-shaped hole 241 connected to the inside of the sleeve 220 is opened inside the transmission column 240, and a knob is fixed to the bottom of the transmission column 240. Rod 250, the knob rod 250 can move the valve stem on the valve to rotate, simulating the working condition of the valve stem rotating with the ball valve core when the valve is in use. The bottom of the 匚-shaped frame 210 is embedded with a motor 2300 that can drive the transmission column 240 to rotate. The double-headed cylinder 400 and the cylinder 2500 are fixedly installed on the test bench 100. The double-headed cylinder 400 and the cylinder 2500 are respectively used to drive the sealing ball 230 to move the interface of the sealing valve. The top of the test bench 100 is plugged and fixed with an air inlet pipe 600, and the air inlet pipe 600 can supply air to the L-shaped hole 241. The outside of the air inlet pipe 600 is connected to a pressurizing component 700. The pressurizing component 700 includes an air bag 720 and an electric push rod 730. The air bag 720 is pushed by the output end of the electric push rod 730 to increase the internal air pressure of the valve.

[0039] Specifically, different interfaces of a three-way T-type ball valve (hereinafter referred to as a three-way ball valve or a three-way valve) are respectively blocked by multiple sealing balls 230. When multiple interfaces of the three-way valve are blocked, the interior of the valve can be inflated and pressurized through an L-shaped hole 231 on the sealing ball 230. Whether the sealing of the valve is good is evaluated by observing the pressure stability of the valve. If the air pressure decreases, it means that the sealing is unqualified. Preventing the air pressure from stabilizing means that the sealing is good. For a two-way valve (equivalent to a valve without a C interface on the three-way valve of this application), two sealing balls 230 can be selected to block the two-way valve. Similarly, the sealing performance of the two-way valve can be tested by inflating the two-way valve, thereby making the testing equipment suitable for sealing performance testing of three-way valves or two-way valves, thereby expanding the scope of use of the testing equipment.

[0040] In addition, during the process of testing the sealing of the valve, the knob rod 250 on the testing mechanism 200 can be made to rotate with the valve stem, so as to simulate the valve core switching working condition when the valve is in use. The electric push rod 730 pushes the airbag 720 cyclically, so that the air inside the airbag 720 increases the air pressure of the testing valve, which is convenient for simulating the working condition of the three-dimensional pressure fluctuation inside the valve. The sealing test of the valve can be carried out under the simulated actual working condition of the valve, which helps to improve the accuracy of the test results.

[0041] like Figure 5 and Figure 7 As shown, in this embodiment, the knob rod 250 includes a connecting rod 251 fixedly connected to the transmission column 240, and a 匚-shaped block 252 is fixed at one end of the connecting rod 251. The opening size of the 匚-shaped block 252 satisfies the limit of the valve stem on the valve.

[0042] In this embodiment, if Figure 2 As shown, during the process of the carrier plate 120 transporting the three-way valve to the bottom of the detection mechanism 200, the valve stem can be inserted into the inner side of the 匚-shaped block 252. At this time, the rotation axis of the valve stem is in the same straight line as the axis of the transmission column 240, so that the transmission column 240 can rotate with the 匚-shaped block 252 to rotate the 匚-shaped block 252 with the valve stem, thereby realizing automatic switching of interfaces in different directions on the valve, and facilitating sealing detection of multiple interfaces one by one. Among them, sufficient space is reserved at the bottom of the sleeve 220 and the motor 2 300 to rotate the valve stem.

[0043] like Figure 6As shown, in the embodiment, the middle part of the blocking ball 230 is provided with a circular cavity 233 communicated with the L-shaped hole one 231, and the inside of the circular cavity 233 is provided with an air pressure sensor 234. Since the L-shaped hole one 231 and the circular cavity 233 are both communicated with the valve interface, the air pressure sensor 234 can detect the air pressure of the valve interface position in real time. The user can evaluate the sealing performance of the valve by observing whether the air pressure value transmitted by the air pressure sensor 234 changes in a period of time. Specifically, if the value decreases, it means that the valve leaks, and the sealing performance of the valve is unqualified. If the value does not change or changes within the allowable error, it means that the sealing performance of the valve is good.

[0044] In the embodiment, the air pressure sensor 234 is a prior art component, which can be a capacitive pressure sensor, a piezoresistive pressure sensor, etc. The selection and working principle of the air pressure sensor 234 are not described in detail.

[0045] As shown in Figure 2 , Figure 5 and Figure 7 , in the embodiment, the inside of the sleeve 220 is fixed with a plurality of stoppers 221, the stoppers 221 are rotationally attached to the transmission column 240, the plurality of stoppers 221 divide the space between the sleeve 220 and the transmission column 240 into a plurality of chambers, the transmission column 240 is provided with an L-shaped hole two 241, the L-shaped hole two 241 can be communicated with different chambers during the rotation of the transmission column 240, one end of the L-shaped hole one 231 of the blocking ball 230 is communicated and fixed with a hose 232, the hose 232 is communicated and fixed with the corresponding chamber inside the sleeve 220, the top surface of the transmission column 240 is communicated and fixed with a transmission pipe 260, the transmission pipe 260 is communicated with the air inlet pipe 600, and the transmission pipe 260 and the output end of the motor two 300 are both fixed with intermeshing gears.

[0046] In the embodiment, Figure 2The valve stem position in the middle is the initial position. When testing the sealing performance of the valve, the motor 230 drives the transmission column 240 to rotate 90 degrees counterclockwise, so that the ball valve core on the valve closes the B interface. The detection mechanism 200 inflates the closed B interface through the chamber connected to the B interface, the hose 232 and the L-shaped hole 231 inside the blocking ball 230 to detect whether the B interface position on the valve is well sealed. The transmission column 240 rotates 180 degrees counterclockwise, so that the ball valve core on the valve closes the C interface. The detection mechanism 200 is connected to the C interface. The chamber, hose 232 and L-shaped hole 231 inside the blocking ball 230 are inflated to the closed C interface to detect whether the C interface position on the valve is well sealed. The transmission column 240 rotates 270 degrees counterclockwise to make the ball valve core on the valve close the A interface. The detection mechanism 200 is connected to the chamber, hose 232 and L-shaped hole 231 inside the blocking ball 230 on the A interface to inflate the closed A interface to detect whether the A interface position on the valve is well sealed, thereby realizing separate sealing detection of interfaces in different directions on the one-way valve.

[0047] like Figure 1 As shown, in this embodiment, a shield 211 is fixedly connected to the top of the shaped frame 210, and the shield 211 can prevent the gears from leaking out and protect the gears.

[0048] In this embodiment, if Figure 7 As shown, the central angle of the arc chamber enclosed by the block 221 is 180 degrees, and the central angles of the other two arc chambers are 90 degrees. This makes the L-shaped hole 241 on the transmission column 240 in the initial state connected to the chamber with a central angle of 180 degrees. At this time, the three interfaces on the valve are all connected. The hose 232 outside the chamber can be used to supply air to the B interface of the valve, so that the entire valve interior can achieve the effect of inflation. After the transmission column 240 rotates the valve stem counterclockwise by 90 degrees When it is necessary to supply air to the B interface alone to detect the sealing of the interface position, even if the transmission column 240 rotates 90 degrees, the L-shaped hole 241 on its outer side is still connected to the chamber with a central angle of 180 degrees, so the chamber can continue to supply air to the B interface alone. After that, the transmission column 240 drives the valve stem to rotate 90 degrees every time to switch the chamber to supply air to different interfaces. The rotation of 90 degrees is one cycle because the ball valve core inside the three-way ball valve switches one path every time it rotates 90 degrees.

[0049] like Figure 4As shown, in this embodiment, the double-headed cylinder 400 is fixed at the bottom of the base plate 110, and the two output ends of the double-headed cylinder 400 are fixedly connected with the connecting column 410, and the two connecting columns 410 are respectively fixedly connected to the corresponding position blocking balls 230, and the cylinder 2 500 is embedded and fixed with the L-shaped plate 130, and the output end of the cylinder 2 500 is fixedly connected to the corresponding position blocking ball 230, and the outer side of the blocking ball 230 is sleeved and fixed with a rubber sleeve. When the blocking ball 230 conflicts with the interface of the valve, the rubber sleeve can improve the sealing of the open edge of the blocking interface of the blocking ball 230. The rubber sleeve is reserved with a hole near the opening of the L-shaped hole 1 231 on the blocking ball 230, which does not affect the blocking of the valve interface by the blocking ball 230 while being able to inflate the inside of the interface.

[0050] In this embodiment, in the initial state, the output end of the second cylinder 500 is extended so that a blocking ball 230 is arranged in the forward direction of the valve. The blocking ball 230 can block the C interface of the valve during the movement of the carrier plate 120 with the valve. Then, the two output ends of the double-headed cylinder 400 move with the two blocking balls 230 to block the A and B interfaces on the valve. For specific states, refer to Figure 2 , so that multiple blocking balls 230 can block the three interfaces of the three-way valve at the same time.

[0051] like Figure 1 and Figure 2 As shown, in this embodiment, the inclined arrangement of the second cylinder 500 allows its output end to be extended or retracted a shorter distance to move the blocking ball 230 away from or close to the valve interface C. Because after the blocking ball 230 blocks the valve interface C, a local area of ​​the blocking ball 230 is embedded inside the interface. Therefore, after the detection is completed, the carrier plate 120 is first moved with the valve slightly in the direction away from the blocking ball 230 to move the portion of the blocking ball 230 embedded in the interface out, and then the second cylinder 500 is driven to contract to make the blocking ball 230 leave the valve.

[0052] like Figure 3 As shown, in this embodiment, a notch 150 is provided on both sides of the base plate 110, and the notch 150 facilitates the movement of the connecting column 410 at the output end of the double-headed cylinder 400. A circular hole 131 is provided on the outer side of the L-shaped plate 130, and the circular hole 131 facilitates the passage of the blocking ball 230.

[0053] like Figure 1 and Figure 5 As shown, in this embodiment, an L-shaped plate 130 is fixedly connected to one side of the base plate 110, the air intake pipe 600 is fixedly connected to the L-shaped plate 130, the bottom of the air intake pipe 600 is connected and fixed with a cylinder 610, the transmission pipe 260 is rotatably connected to the cylinder 610, and the transmission pipe 260 is rotatably connected to the cylinder 610.

[0054] In this embodiment, existing technical equipment such as air pumps and air compressors that pump air from the outside supply air to the air inlet pipe 600, and the air inlet pipe 600 supplies air to the cylinder 610, the transmission pipe 260 and the L-shaped hole 241 inside the transmission column 240 from top to bottom, and finally the air inside the L-shaped hole 241 can be transported to the internal space of the sleeve 220, and then transported to different interfaces from hoses 232 in different directions as needed. Among them, the transmission pipe 260 is connected to the cylinder 610 in rotation. In the process of the transmission pipe 260 rotating with the transmission column 240, the air inlet pipe 600 can still supply air to the transmission pipe 260, and is not affected by the rotation of the transmission pipe 260. The rotation of the transmission pipe 260 will not cause the air inlet pipe 600 to rotate.

[0055] In this embodiment, a solenoid valve is installed in series on the air intake pipe 600. During the process of stabilizing the pressure and stopping the gas supply, the solenoid valve is automatically closed, so that the high-pressure air inside the detection mechanism 200 can flow out from the air intake pipe 600 in the reverse direction.

[0056] Example 2, based on Example 1, is designed to simulate the effect of fluid pressure fluctuation on valve sealing.

[0057] like Figure 1 and Figure 5 As shown, in this embodiment, a support tube 710 is sleeved on the outer side of the airbag 720, and the output end of the electric push rod 730 is fixedly connected to the airbag 720 through a circular plate. The support tube 710 and the electric push rod 730 are both fixedly connected to the L-shaped plate 130, and the cylinder body 610 on the air intake pipe 600 is connected and fixed to the airbag 720.

[0058] In this embodiment, the airbag 720 is squeezed by the output end of the electric push rod 730, so that the buffered air inside the airbag 720 can be supplied to the air inlet pipe 600, so that the air pressure entering the valve interface position can be increased, thereby simulating the fluid pressure fluctuation inside the valve. In addition, when the valve leaks, the air pressure inside the entire detection mechanism 200 will become smaller. During subsequent detection, the output end of the electric push rod 730 can be directly squeezed again to help the air buffered inside the airbag 720 to replenish the air pressure inside the detection mechanism 200 for continued detection, eliminating the need to frequently open and close the external air pumping equipment to supply air to the detection mechanism 200.

[0059] Embodiment 3, based on embodiment 1, is to improve the efficiency of valve sealing detection by enabling two valves to be alternately tested for sealing.

[0060] like Figure 1 and Figure 3As shown, in this embodiment, two cavities 121 are provided on the top surface of the carrier plate 120, and the cavity 121 can meet the requirements of clamping and placing the valve. A motor 140 is fixed to one end of the substrate 110, and a screw 141 is fixed to the output end of the motor 140. The screw 141 is screwed and connected to the carrier plate 120, and the screw 141 is rotatably connected to the substrate 110, and the carrier plate 120 is slidably connected to the substrate 110.

[0061] In this embodiment, when the cavity 121 at one end of the carrier plate 120 is moved with the valve to the detection mechanism 200 station for sealing detection, another valve to be detected can be placed on another cavity 121. After the valve that has completed the inspection is moved out of the detection mechanism 200, the spare valve can be immediately subjected to sealing detection, and at the same time, the user takes out the valve that has completed the inspection, thereby achieving the effect of valve cyclic loading and unloading.

[0062] In this embodiment, if the carrier plate 120 moves from right to left with the valve for loading inspection, it is necessary to shrink the output end of cylinder 2 500 in advance. When the C interface of the valve moves to the left side of the blocking ball 230 at the output end of cylinder 2 500, the output end of cylinder 2 500 moves downward with the blocking ball 230, and then the carrier plate 120 moves toward the blocking ball 230 with the valve, so that the blocking ball 230 blocks the C interface of the valve.

[0063] In the present invention, every time the valve stem rotates 90 degrees, the opening and closing conditions of the interfaces in different directions on the three-way valve can be referred to Figure 8 .

[0064] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0065] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A sealing detection device for valve production, characterized in that: Comprising: A detection table (100), the detection table (100) includes a substrate (110), and a carrier plate (120) is slidably connected to the top surface of the substrate (110); A detection mechanism (200), the detection mechanism (200) includes a U-shaped frame (210) fixed to the substrate (110), a sleeve (220) is fixed on the U-shaped frame (210), three plugging balls (230) are connected and fixed to the outside of the sleeve (220), an L-shaped hole one (231) communicating with a valve interface is opened inside the plugging ball (230), a transmission column (240) is rotatably connected inside the sleeve (220), an L-shaped hole two (241) communicating with the inside of the sleeve (220) is opened inside the transmission column (240), and a knob rod (250) is fixed to the bottom of the transmission column (240); A motor two (300), fixed to the U-shaped frame (210), capable of driving the transmission column (240) to rotate; A double-headed cylinder (400) and a cylinder two (500), both fixed to the detection table (100), capable of driving the plugging ball (230) to move; An air inlet pipe (600), fixed to the detection table (100), capable of supplying air to the L-shaped hole two (241); A pressurization component (700), arranged on the outside of the air inlet pipe (600) in a connected manner, the pressurization component (700) includes an airbag (720) and an electric push rod (730).

2. The sealing detection equipment for valve production according to claim 1, characterized in that: The knob rod (250) includes a connecting rod (251) fixedly connected to the transmission column (240), and a U-shaped block (252) is fixed to one end of the connecting rod (251).

3. The sealing detection equipment for valve production according to claim 1, characterized in that: A circular cavity (233) communicating with the L-shaped hole one (231) is opened in the middle of the plugging ball (230), and a pneumatic pressure sensor (234) is installed on the inner side of the circular cavity (233).

4. The sealing detection equipment for valve production according to claim 1, characterized in that: A plurality of cavities (121) are opened on the top surface of the carrier plate (120), a motor one (140) is fixed to one end of the substrate (110), and a screw rod (141) capable of driving the carrier plate (120) to move is fixed to the output end of the motor one (140).

5. The sealing detection equipment for valve production according to claim 1, characterized in that: The double-headed cylinder (400) is fixedly connected to the substrate (110), and the output ends of the double-headed cylinder (400) and the cylinder two (500) are respectively fixed to the corresponding plugging balls (230).

6. The sealing detection equipment for valve production according to claim 1, characterized in that: One end of the L-shaped hole one (231) on the plugging ball (230) is connected and fixed with a hose (232), and the hose (232) is connected and fixed with the sleeve (220).

7. The sealing detection equipment for valve production according to claim 6, characterized in that: A plurality of stoppers (221) are fixed to the inner side of the sleeve (220), and the stoppers (221) are rotationally abutted against the transmission column (240).

8. The sealing detection equipment for valve production according to claim 1, characterized in that: An L-shaped plate (130) is fixed to one side of the substrate (110), the air inlet pipe (600) is fixed to the L-shaped plate (130), and a cylinder body (610) is connected and fixed to the bottom of the air inlet pipe (600).

9. The sealing detection equipment for valve production according to claim 8, characterized in that: A transmission pipe (260) is connected and fixed to the top surface of the transmission column (240), the transmission pipe (260) is connected and rotatably connected with the cylinder body (610), and the cylinder body (610) is connected and fixed with the airbag (720).

10. The sealing detection equipment for valve production according to claim 9, characterized in that: The outer side of the airbag (720) is sleeved with a support tube (710), the output end of the electric push rod (730) is fixedly connected to the airbag (720), and the support tube (710) and the electric push rod (730) are both fixedly connected to the L-shaped plate (130).

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