Detection device for valve plate

Abstract

The utility model relates to the technical field of valve plates, in particular to a detection device for a valve plate, which comprises a test bedplate, a mounting frame is fixed on the test bedplate, a convex seat is fixed on the test bedplate, a telescopic rod is fixed at the top of the mounting frame, and a pressing plate fixed at the bottom end of the telescopic rod is over against the convex seat. Air holes are formed in the protruding base and the pressing plate, and the cylinder cover, the pressing plate and the protruding base are matched so that the sealing performance and the environmental adaptability of the valve plate can be tested in a combined mode.

Description

Technical Field

[0001] The utility model relates to the technical field of valve plates, in particular to a detection device for valve plates. Background Art

[0002] As a key component of the valve, the performance of the valve plate directly affects the quality and safety of the entire valve. A variety of testing methods are required to ensure that it can maintain optimal performance under specific working conditions.

[0003] Such as the sealing test of the valve plate and the environmental adaptability test of the valve plate, including the test of high temperature, low temperature, corrosive chemicals and other environments. Environmental testing and sealing testing sometimes need to be combined. Therefore, a valve plate detection device is needed that can detect the sealing of the valve plate in a variety of environments. Utility Model Content

[0004] The utility model aims at at least solving the problem in the prior art that it is inconvenient to conduct a combined test on the sealing performance and environmental adaptability of the valve plate.

[0005] The present invention provides a detection device for a valve plate, which is achieved by the following specific technical means: comprising a test table, a mounting frame is fixed on the test table, a convex seat is fixed on the test table, and a telescopic rod is fixed on the top of the mounting frame, a pressing plate fixed at the telescopic end of the bottom end of the telescopic rod faces the convex seat, and air holes are opened on the convex seat and the pressing plate, and when the telescopic rod is extended, the upper and lower ports of the valve are clamped by the pressing plate and the convex seat, and the ports of the valve are connected to the air holes, a liquid box is arranged on the bottom side of the test table, an air pipe connected to the air hole is fixed on the convex seat, and the bottom end of the air pipe extends into the liquid in the liquid box, and the valve plate in the valve is closed during the experiment, and the closed valve is inflated to observe whether there are bubbles discharged from the air pipe;

[0006] A barrel cover is fixedly sleeved on the pressure plate, and the barrel cover is inserted into the convex seat when the pressure plate moves downward. The barrel cover, the pressure plate and the convex seat form a closed space to cover the valve. By filling the closed space with high-temperature, low-temperature gases, or even corrosive chemicals, it is possible to detect whether the sealing of the valve plate changes under extreme environments.

[0007] Preferred technical solution 1: The barrel cover and the pressure plate are detachably connected, such as a threaded connection, and a sealing ring is provided around the side of the convex seat, and the sealing ring is in contact with the inner wall of the barrel cover.

[0008] Optimal technical solution 2: an injection port is provided on the barrel cover.

[0009] Preferred technical solution three: a control box is installed on the top of the pressing plate, an air pump is installed in the control box, and an air outlet pipe of the air pump is connected to the air hole of the pressing plate.

[0010] Preferred technical solution four: the convex shaft fixed at the front end of the test bench is rotatably connected to the top of the liquid tank, and a motor fixedly connected to the convex shaft is fixed on the liquid tank. The convex shaft is driven by the motor to rotate to control the tilt state of the test bench.

[0011] The above structure enables this solution to have the following beneficial effects:

[0012] The combination of the cylinder cover, the pressure plate and the convex seat can combine the sealing and environmental adaptability of the valve plate to test, which can not only complete the sealing test of the valve plate under normal environment, but also complete the sealing test of the valve plate under special use environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 This is a schematic diagram of the overall structure of this scheme;

[0015] Figure 2 Use a state diagram for this solution;

[0016] Figure 3 This is a schematic diagram of the structure of the convex seat of this scheme;

[0017] Figure 4 This is a schematic diagram of the structure of the trachea in this scheme.

[0018] Among them, 1. test table, 11. convex shaft, 2. mounting frame, 3. convex seat, 31. concentric ring groove, 32. sealing ring, 4. telescopic rod, 5. pressure plate, 51. air hole, 6. air pipe, 7. liquid box, 8. cylinder cover, 81. injection port, 9. control box, 10. motor. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-Figure 4, a detection device for a valve plate comprises a test table 1, a mounting frame 2 is fixed on the test table 1, a convex seat 3 is fixed on the test table 1, and a telescopic rod 4 is fixed on the top of the mounting frame 2. A pressing plate 5 fixed at the telescopic end of the bottom end of the telescopic rod 4 faces the convex seat 3. Air holes 51 are provided on the convex seat 3 and the pressing plate 5. When the telescopic rod 4 is extended, the pressing plate 5 and the convex seat 3 are used to clamp the upper and lower ports of the valve, and the ports of the valve are connected to the air holes 51. A control box 9 is installed on the top of the pressing plate 5, and an air pump is installed in the control box 9. The air outlet pipe 6 of the air pump is connected to the air hole 51 of the pressing plate 5. A liquid box 7 is arranged on the bottom side of the test table 1, and an air pipe 6 connected to the air hole 51 is fixed on the convex seat 3. The bottom end of the air pipe 6 extends into the liquid in the liquid box 7. During the experiment, the valve plate in the valve is closed, and then the air pump is started to inflate the closed valve through the air hole 51 on the pressing plate 5, and it is observed whether there are bubbles discharged from the air pipe 6. If there are bubbles discharged, it is considered that the sealing of the valve plate is insufficient;

[0021] A barrel cover 8 is fixedly sleeved on the pressure plate 5, and the barrel cover 8 is inserted into the convex seat 3 when the pressure plate 5 moves downward. When the valve is clamped by the pressure plate 5 and the convex seat 3, the barrel cover 8, the pressure plate 5 and the convex seat 3 form a closed space to cover the valve. By filling the closed space with high-temperature, low-temperature gases, or even corrosive liquid chemicals, it is possible to detect whether the sealing of the valve plate changes under extreme environments. The barrel cover 8 is made of a transparent, corrosion-resistant, and heat-insulating board to facilitate observation of the internal situation. An injection port 81 is provided on the barrel cover 8, and an external gas or liquid supply pipeline is connected through the injection port 81.

[0022] See also Figure 1-Figure 2 , the valve plate detection device, the barrel cover 8 and the pressure plate 5 are detachably connected, such as threaded connection, and a sealing ring is provided around the side of the convex seat 3, and the sealing ring contacts the inner wall of the barrel cover 8 to achieve a sealed sleeve between the convex seat 3 and the barrel cover 8;

[0023] When it is necessary to complete the sealing test of the valve plate to the valve pipe and the sealing test of the valve housing at the same time, water can also be injected into the cylinder cover 8 after the valve plate is in the open and closed states to observe whether there is exhaust leakage in the valve housing.

[0024] See also Figure 3 , a detection device for a valve plate, a plurality of groups of concentric annular grooves 31 are provided on the top surface of the convex seat 3 from the center to the periphery, and the arrangement of the concentric annular grooves 31 is convenient for providing a reference for the accurate placement of the valve.

[0025] See also Figure 1-Figure 2, a detection device for the valve plate, a cam 11 fixed at the front end of the test table 1 is rotatably connected to the top of the liquid tank 7, and a motor 10 fixed to the cam 11 is fixed on the liquid tank 7. The motor 10 drives the cam 11 to rotate to control the inclination of the test table 1. When the liquid is filled in the barrel cover 8 and needs to be discharged after the test, the motor 10 can be used to control the downward inclination of the test table 1, so that the test table 1 extends into the liquid tank 7. When the cam 3 is pressed away from the cam 3, the liquid discharged from the barrel cover 8 is discharged from the bottom of the barrel cover 8 and falls into the liquid tank 7, preventing the liquid from falling to the outside of the liquid tank 7.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A valve plate detection device, comprising a test table (1), a mounting frame (2) fixed on the test table (1), a convex seat (3) fixed on the test table (1), and a telescopic rod (4) fixed on the top of the mounting frame (2), a pressing plate (5) fixed at the bottom telescopic end of the telescopic rod (4) facing the convex seat (3), characterized in that: The convex seat (3) and the pressing plate (5) are both provided with air holes (51); a liquid box (7) is provided on the bottom side of the test table (1); an air pipe (6) connected to the air hole (51) is fixed to the convex seat (3); the bottom end of the air pipe (6) extends into the liquid in the liquid box (7); a tube cover (8) is fixedly sleeved on the pressing plate (5); the tube cover (8) is inserted into the convex seat (3) when the pressing plate (5) moves downward.

2. A valve plate detection device according to claim 1, characterized in that: The cylinder cover (8) and the pressing plate (5) are detachably connected.

3. A valve plate detection device according to claim 2, characterized in that: A sealing ring is sleeved around the side of the convex seat (3), and the sealing ring is in contact with the inner wall of the cylinder cover (8).

4. A valve plate detection device according to claim 1, characterized in that: The cylinder cover (8) is provided with an injection port (81).

5. A valve plate detection device according to claim 1, characterized in that: A control box (9) is installed on the top of the pressing plate (5), an air pump is installed in the control box (9), and an air outlet pipe (6) of the air pump is connected to the air hole (51) of the pressing plate (5).

6. A valve plate detection device according to claim 1, characterized in that: A convex shaft (11) fixed at the front end of the test bench (1) is rotatably connected to the top of the liquid box (7), and a motor (10) fixedly connected to the convex shaft (11) is fixed on the liquid box (7). The motor (10) drives the convex shaft (11) to rotate, so that the tilt state of the test bench (1) can be controlled.

7. A valve plate detection device according to claim 1, characterized in that: The tube cover (8) is a transparent plate.

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