Device for measuring airtightness of valve plate

Abstract

The utility model provides a device for measuring the airtightness of a valve plate, and belongs to the technical field of airtightness detection and measurement. Comprising a base, a valve plate air inlet hole is formed in the center of the top of the base, supporting rods are symmetrically arranged on the two sides of the bottom of the base, a supporting plate is arranged between the tops of the supporting rods, a pressing assembly used for pressing a valve plate is arranged on the supporting plate, and an air tightness testing fixture which is arranged above the valve plate air inlet hole and used for measuring the air tightness of the valve plate is arranged below the pressing assembly. According to the utility model, the valve plate and the air tightness detection tool are pressed between the top of the base and the pressing head by operating the pressing assembly, the whole device is placed in water, air is introduced into the air inlet pipeline through the inflation equipment and is filled into the inner cavity of the valve plate through the air inlet of the valve plate, the device is used for measuring whether the air tightness of a product is good, and the device is simple in structure, strong in practicability and high in detection speed. The using method is simple, safe and reliable, and the accuracy and timeliness of the valve plate air tightness measuring result are guaranteed.

Description

Technical Field

[0001] The utility model provides a measuring device for the air tightness of a valve plate, belonging to the technical field of air tightness detection and measurement. Background Art

[0002] Air tightness detection and measurement are usually applied to the sealing of cavity mechanical products, mainly used in the production of automotive engines, gearboxes, axles, water tanks, fuel tanks, etc. that have sealing requirements for cavities. Among them, when detecting the valve plate, it is necessary to detect its air tightness, and at this time, a measuring device for air tightness detection is required.

[0003] Existing measuring devices for the air tightness of valve plates can basically meet the usage requirements. However, due to the increasing production volume and stricter quality requirements of valve plates, the detection pressure is getting higher, and the possibility of products with poor air tightness increases. Moreover, the existing measuring devices for the air tightness of valve plates have a relatively complex structure, resulting in relatively more detection steps and a not-so-simple usage method, leading to a relatively slow detection speed and making it difficult to ensure the accuracy and timeliness of the measurement results of the air tightness of valve plates. Based on this, the utility model provides a measuring device for the air tightness of valve plates. Summary of the Utility Model

[0004] The technical problem solved by the utility model is that the existing device has a relatively complex structure, relatively more detection steps, a not-so-simple usage method, a relatively slow detection speed, and it is difficult to ensure the accuracy and timeliness of the measurement results of the air tightness of valve plates.

[0005] To solve the technical problem, the technical solution provided by the utility model is: a measuring device for the air tightness of a valve plate, including a base. A valve plate air inlet hole is provided at the center of the top of the base. Support rods are symmetrically provided on both sides of the bottom of the base. A support plate is provided between the tops of the support rods. A pressing assembly for pressing the valve plate is provided on the support plate. Below the pressing assembly, an air tightness gauge for measuring the air tightness of the valve plate is provided above the valve plate air inlet hole.

[0006] Further, a sealing gasket is provided at the bottom of the air tightness gauge above the valve plate air inlet hole.

[0007] Further, the pressing assembly includes a screw rod threadedly connected to the support plate. A handle is provided at the top of the screw rod above the support plate. The lower end of the screw rod is rotatably connected to a pressing head above the air tightness gauge.

[0008] Further, an air inlet hole sealing ring is provided in the upper part of the valve plate air inlet hole.

[0009] Further, an air inlet pipe communicating with the valve plate air inlet hole is provided on the side wall of the base, and the air inlet pipe is communicated with an inflation device.

[0010] Advantages of the utility model:

[0011] By operating the pressing component, the valve plate and the airtightness detector are pressed between the top of the base and the pressing head, so that the air inlet hole sealing ring and the sealing gasket seal the air inlet hole of the valve plate, preventing air leakage during inflation. The whole device is placed in water, and then gas is introduced into the air inlet pipe through an external inflation device, and then into the inner cavity of the valve plate through the air inlet hole of the valve plate. The airtightness of the product is measured by the airtightness detector. The device has a simple structure, strong practicability, fast detection speed, simple usage method, safety and reliability, ensuring the accuracy and timeliness of the measurement result of the airtightness of the valve plate. Description of the drawings

[0012] Figure 1 It is a schematic plan view of a device for measuring the airtightness of a valve plate of the utility model.

[0013] 1. Base; 2. Air inlet hole of the valve plate; 3. Support rod; 4. Support plate; 5. Pressing component; 6. Airtightness detector; 7. Sealing gasket; 8. Screw; 9. Pressing head; 10. Air inlet hole sealing ring; 11. Air inlet pipe; 12. Valve plate. Detailed implementation manners

[0014] The following further describes the utility model with reference to the drawings.

[0015] According to the attached Figure 1 As shown in the figure: The utility model provides a device for measuring the airtightness of a valve plate, which includes a base 1. A valve plate air inlet hole 2 is provided at the center of the top of the base 1. An air inlet pipe 11 communicating with the valve plate air inlet hole 2 is provided on the side wall of the base 1. The air inlet pipe 11 is communicated with an inflation device. Support rods 3 are symmetrically provided on both sides of the bottom of the base 1. A support plate 4 is provided between the tops of the support rods 3. A pressing component 5 for pressing the valve plate is provided on the support plate 4. An airtightness detector 6 for measuring the airtightness of the valve plate is provided above the valve plate air inlet hole 2 under the pressing component 5. The airtightness detector 6 and the inflation device are both existing mature products and will not be elaborated here. During detection, the valve plate to be measured for airtightness is placed on the top of the base 1, then the airtightness detector 6 is placed on the top of the valve plate, and the pressing component 5 presses downwards. The device is placed in water, and then gas is introduced into the air inlet pipe 11 through an external inflation device, and then into the inner cavity of the valve plate through the valve plate air inlet hole 2 to measure whether the airtightness of the product is good.

[0016] According to the attached Figure 1 As shown in the figure: A sealing gasket 7 is provided at the bottom of the airtightness detector 6 above the valve plate air inlet hole 2. An air inlet hole sealing ring 10 is provided in the upper part of the valve plate air inlet hole 2. The air inlet hole of the valve plate 2 is sealed by the air inlet hole sealing ring 10, and the top of the valve plate is sealed by the sealing gasket 7 to prevent air leakage during inflation.

[0017] According to the attachedFigure 1 As shown in the figure: The pressing assembly 5 includes a screw rod 8 threadedly connected to the support plate 4. A grip is provided at the top of the screw rod 8. The lower end of the screw rod 8 is rotatably connected to a pressing head 9 placed above the airtightness detector 6. By holding the grip and rotating it, the screw rod 8 rotates and moves downward, and then the pressing head 9 can be driven to move downward until the bottom of the pressing head 9 is in close contact with the airtightness detector 6.

[0018] Principle of the present utility model

[0019] During use, when performing detection, place the valve plate 12 to be measured for airtightness on the top of the base 1, and then place the airtightness detector 6 on the top of the valve plate. By operating the pressing assembly 5, the pressing head 9 moves downward until the bottom of the pressing head 9 is in close contact with the airtightness detector 6. Thus, the valve plate and the airtightness detector 6 can be pressed between the top of the base 1 and the pressing head 9. At this time, the intake hole sealing ring 10 seals the intake hole 2 of the valve plate, and the sealing gasket 7 seals the top of the valve plate to prevent air leakage during inflation. Place the whole device in water, and then pass gas into the intake pipe 11 through an external inflation device. The gas is filled into the inner cavity of the valve plate through the intake hole 2 of the valve plate. The airtightness of the product is measured by the airtightness detector 6. The device has a simple structure, strong practicability, fast detection speed, simple usage method, is safe and reliable, and ensures the accuracy and timeliness of the measurement result of the airtightness of the valve plate.

[0020] The above describes the present utility model and its implementation manners. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present utility model, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and without departing from the creative purpose of the present utility model, without creative design, they design a structural manner and an embodiment similar to the technical solution, they shall fall within the protection scope of the present utility model.

Claims

1. A measuring device for the airtightness of a valve plate, comprising a base (1), characterized in that: At the center of the top of the base (1), there is a valve plate air inlet hole (2). On both sides of the bottom of the base (1), support rods (3) are symmetrically arranged. Between the tops of the support rods (3), there is a support plate (4). On the support plate (4), there is a pressing component (5) for pressing the valve plate. Below the pressing component (5), there is an airtightness inspection tool (6) placed above the valve plate air inlet hole (2) for measuring the airtightness of the valve plate.

2. The measuring device for the airtightness of a valve plate according to claim 1, characterized in that: At the bottom of the airtightness inspection tool (6), there is a sealing gasket (7) placed above the valve plate air inlet hole (2).

3. The measuring device for the airtightness of a valve plate according to claim 1, characterized in that: The pressing component (5) includes a screw rod (8) threadedly connected to the support plate (4). At the top of the screw rod (8), there is a grip placed above the support plate (4). The lower end of the screw rod (8) is rotatably connected to a pressing head (9) placed above the airtightness inspection tool (6).

4. A measuring device for the airtightness of a valve plate according to claim 1, characterized in that: Inside the upper part of the valve plate air inlet hole (2), there is an air inlet hole sealing ring (10).

5. The measuring device for the airtightness of a valve plate according to claim 1, wherein: On the side wall of the base (1), there is an air inlet pipe (11) connected to the valve plate air inlet hole (2), and the air inlet pipe (11) is connected to an inflation device.

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