Valve element air tightness inspection device
By designing the valve core airtightness inspection device and using transparent containers and air pressure sensors for non-destructive testing, the damage problem of the valve core by traditional detection methods is solved, and efficient and low-cost airtightness inspection is achieved.
Patent Information
- Application Number
- CN202422457583.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-11
- Publication Date
- 2025-08-08
- Estimated Expiration
- 2034-10-11
AI Technical Summary
The prior art is difficult to effectively detect the air tightness of the air valve spool, and traditional detection methods may damage the valve spool or be costly.
A valve core airtightness inspection device is designed, using transparent containers, tooling, cylinders, air pressure sensors and controllers to check the valve core airtightness through non-destructive testing, and non-destructive testing is achieved using sealing rings and intake passages.
The lossless air-tightness detection of the valve core is realized, which ensures product quality and reduces the inspection cost.
Smart Images
Figure CN223205085U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an air valve, in particular to an inspection device for a valve core of the air valve. Background Art
[0002] The electric proportional multi-way valve developed by the applicant has the advantages of fast response, precise action, small pressure loss and compact structure. However, it is inevitable that because the parts of the valve are also relatively precise, the requirements for processing and quality inspection are also relatively high. In particular, the three valve cores also need to be embedded with valves inside, which places high demands on processing and quality inspection. Traditional air tightness inspections are only performed on the valve itself, and there are various inspection standards in the industry. However, there are no reports on air tightness inspections of valve cores. The outer surface of the valve core assembly is machined with high precision and cannot be damaged. The machined surface to be inspected is the inside of the valve core, and it is difficult to conduct effective inspections inside the valve core by relying solely on various instruments. If there are no appropriate means, the valve core needs to be cut open and inspected, which has poor results and high costs. Summary of the Invention
[0003] The present invention aims to address the above-mentioned defects of the prior art and provides a valve core air tightness inspection device. The present invention can be used to inspect the air tightness of the valve core, which not only ensures the quality of the applicant's products but also provides a beneficial supplement to subsequent hydraulic valve quality control measures.
[0004] The utility model is implemented as follows: a valve core air tightness inspection device, which is used to check the air tightness of a valve core for non-destructive testing, and comprises: a transparent container with an upper opening and water filled therein; a tool for testing the valve core, which is fixed to the bottom of the transparent container; a hole in the container is used to accommodate the lower half of the valve core to be inspected; a step on the valve core body is seated on the upper surface of the tool; an air outlet channel is provided at a position corresponding to the air outlet of the valve core, an air inlet channel is provided on the side of the tool to lead to the air inlet hole of the valve core, and the air inlet channel is connected to an air intake control valve with an air pressure sensor through an air pipe; a cylinder is fixed above the opening of the transparent container, a pressure block is fixed at the output end of the cylinder; the cylinder is connected to the cylinder control valve through an air pipe; a controller with a control panel, which respectively controls the action of the cylinder and the air intake of the air intake channel on the side of the tool. Under the control of the controller, the pressure block presses down the top of the valve core, and the air intake channel on the side of the tool is filled with air, which lifts the ball in the valve core to a limit position, and the inspection can be achieved through the indication of the air pressure sensor.
[0005] In the valve core air tightness inspection device, a sealing ring is provided on the contact surface between the upper surface of the tool or the inner surface of the hole and the valve core body to be inspected.
[0006] In the valve core air tightness inspection device, when the air outlet of the valve core is located on the upper part of the valve core and not in the tooling, the tooling is not provided with an air outlet channel.
[0007] This utility model can check the air tightness of the valve core. The tooling is a series. For different specifications and models, the appropriate size and shape can be selected for testing. This ensures the quality of precision valves and also provides quality assurance for such high-value products. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] The present invention will be further described below with reference to the accompanying drawings:
[0009] Figure 1 It is a schematic diagram of the utility model;
[0010] Figure 2 This is a schematic diagram of the valve core after installation during inspection;
[0011] Figure 3 This is a schematic diagram when the tooling does not have an air outlet channel. DETAILED DESCRIPTION
[0012] See Figure 1 and Figure 2 The utility model valve core air tightness inspection device is used to check the air tightness of the valve core 1 of the non-destructive testing gas valve, and it includes:
[0013] A transparent container 10, which is open at the top and filled with water, is made of organic glass;
[0014] A tool 2 for testing the valve core is fixed to the bottom of a transparent container. A hole is provided in the tool to accommodate the lower half of the valve core 1 to be inspected. A step on the valve core body sits on the upper surface of the tool. An air outlet channel 21 is provided on the tool corresponding to the valve core outlet. An air inlet channel 22 is provided on the side of the tool to lead to the air inlet hole of the valve core. The air inlet channel 22 is connected to an air inlet control valve 5 with an air pressure sensor 4 via an air pipe 3.
[0015] A cylinder 6, which is fixed above the opening of the transparent container 2, with a pressure block 7 fixed to its output end; the cylinder is connected to a cylinder control valve 8 through an air pipe;
[0016] A controller with a control panel 9 controls the movement of the cylinder and the air intake of the air intake channel on the side of the tooling. Under the control of the controller, the pressure block presses down the top of the valve core 1, and the air intake channel on the side of the tooling 2 takes in air, lifting the small ball in the valve core to the limit position, which can be checked by the indication of the air pressure sensor.
[0017] In the valve core air tightness inspection device, a sealing ring is provided at the contact surface between the upper surface of the tooling or the inner surface of the hole and the upper surface of the valve core body to be inspected.
[0018] In the valve core air tightness inspection device, when the air outlet of the valve core is located on the upper part of the valve core and not in the tooling, the tooling is not provided with an air outlet channel (see Figure 3 ).
[0019] During testing, follow Figure 1-3 As shown in the figure, water is poured into a transparent container to a suitable height, and an inflatable tool 2 is fixed at the bottom of the container. The inflatable tool has an air pipe 3 connected to the cylinder control valve 8. When airtightness testing is required, the inflatable control valve 8 is opened to allow air to enter.
[0020] The valve core is installed on the tooling 2, the cylinder 6 is pressed down, and the pressing block 7 supports the valve core 1. The air intake control valve 8 is opened.
[0021] If the air pressure sensor shows normal pressure, the part is qualified; if the air pressure sensor shows low pressure and gas leakage occurs, the part is unqualified; in fact, when the air outlet channel is below the water surface in the transparent container, if there is a leak, bubbles will appear there.
[0022] By doing this cycle, each valve core can be inspected, thus ensuring product quality.
Claims
1. Valve core air tightness inspection device, which is used to check the air tightness of the valve core of the non-destructive testing gas valve, is characterized by: It includes: a transparent container with an upper opening and filled with water; A fixture for testing the valve core, which is fixed to the bottom of the transparent container; A hole is opened to accommodate the valve core to be inspected; a step on the valve core body sits on the upper surface of the tooling; an air outlet channel is provided at a position corresponding to the valve core air outlet, and an air inlet channel is provided on the side of the tooling to lead to the air inlet hole of the valve core. The air inlet channel is connected to an air intake control valve with an air pressure sensor through an air pipe; A cylinder is fixed above the opening of the transparent container, with a pressure block fixed at its output end; the cylinder is connected to the cylinder control valve through an air pipe; A controller with a control panel controls the movement of the cylinder and the air intake of the air intake channel on the side of the tooling. Under the control of the controller, the pressure block presses down the top of the valve core, and the air intake channel on the side of the tooling takes in air, lifting the small ball in the valve core to the limit position, which can be checked by the indication of the air pressure sensor.
2. The valve core air tightness inspection device according to claim 1, characterized in that: A sealing ring is provided at the contact surface between the upper surface of the tooling and the step on the valve core body to be inspected.
3. The valve core air tightness inspection device according to claim 1, characterized in that: When the air outlet of the valve core is located on the upper part of the valve core and is not located in the tooling, the tooling is not provided with an air outlet channel.