Airtightness detection device for two-stage and three-stage air inlet valves

By designing a second- and third-stage intake valve detection device including moving blocks, clamps and air pressure detectors, the problem that existing devices cannot be suitable for intake valves of different specifications is solved, efficient and accurate air tightness detection is achieved, and detection efficiency and accuracy are improved.

CN222635729UActive Publication Date: 2025-03-18LIAOYANG LIANHE TRADING CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202420531666.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-03-19
Publication Date
2025-03-18
Estimated Expiration
2034-03-19

AI Technical Summary

Technical Problem

The existing second- and third-stage intake valve detection devices cannot be applied to intake valves of different specifications, resulting in an increase in detection time and reduced efficiency, and the accuracy of the existing detection methods is not high.

Method used

An airtight detection device including a base plate, a base, a box, an upper cover, a moving block, a clamp, a threaded rod and a motor is designed. The fixed installation of intake valves of different specifications is achieved through the coordination of the moving block and a clamp, and the airtightness detection is carried out by the coordination of the vacuum cleaner, an intake pipe, an outlet pipe and a pressure detector.

Benefits of technology

It realizes efficient detection of second- and third-level intake valves of different specifications and sizes, improves detection efficiency, and improves detection accuracy through the use of air pressure detectors, ensuring the reliability of the air tightness and qualification judgment of the intake valve.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN222635729U_ABST
    Figure CN222635729U_ABST
Patent Text Reader

Abstract

The utility model discloses an air tightness detection device for two-stage and three-stage air inlet valves, which relates to the technical field of air valve detection and comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with a base, the upper surface of the bottom plate is fixedly connected with a box body, and the upper surface of the box body is slidably connected with an upper cover. According to the utility model, the design structure is reasonable, the base, the moving block, the first clamping plate, the threaded rod, the second clamping plate and the motor are matched, a two-stage and three-stage air inlet valve is placed on the base, the motor is started, and the output shaft end of the motor drives the threaded rod to rotate, so that the moving block is driven to approach the second clamping plate, and the two-stage and three-stage air inlet valve is fixedly mounted; the problems that existing two-stage and three-stage air inlet valves are different in specification and size, one device can only detect the two-stage and three-stage air inlet valves of one specification and size, the practicability of the detection device is greatly shortened, and for the two-stage and three-stage air inlet valves of different specifications and sizes, the detection time is prolonged, and the detection efficiency is reduced are solved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to the technical field of air valve detection, in particular to an airtightness detection device for a second or third stage air intake valve. Background Art

[0002] The air tightness of the air valve has an important influence on the exhaust volume, volumetric specific energy, inter-stage compression ratio and exhaust temperature of the compressor. During the exhaust process of the compressor, if the air tightness of the air valve is poor, the gas will leak out of the compressor through the intake valve, which will reduce the exhaust volume, increase energy consumption, and increase the corrosion of the valve plate and valve seat sealing surface. During the expansion and intake process, if the air tightness of the air valve is poor, the gas will leak into the cylinder from the exhaust chamber through the exhaust valve, which will not only reduce the exhaust volume and increase energy consumption, but also lead to an increase in the temperature of the gas in the cylinder, causing carbon accumulation on the surface of the air valve and reducing the gas flow area. Therefore, the air tightness detection of the air valve is the most important process to check whether the product is qualified.

[0003] However, the existing second and third stage intake valves have different sizes, and one device can only detect second and third stage intake valves of one size, which greatly shortens the practicality of the detection device. For second and third stage intake valves of different sizes, the detection time is increased and the detection efficiency is reduced. To this end, we provide a second and third stage intake valve airtightness detection device to solve the above problems. Utility Model Content

[0004] 1) Technical issues solved

[0005] The utility model aims to make up for the deficiencies of the prior art and provides an airtightness detection device for a second- and third-stage air intake valve.

[0006] 2) Technical solution

[0007] The cam is connected with a bottom surface of the bottom plate, and the top surface of the bottom plate is connected with a box body, and the top surface of the box body is slidably connected with an upper cover, and the upper surface of the base is slidably connected with a moving block, and the upper surface of the moving block is fixedly connected with a step column, the bottom surface of the step column is slidably connected with the upper surface of the base, and the outer surface of the step column is fixedly connected with a clamping plate one, and the bottom surface of the clamping plate one is slidably connected with the upper surface of the base, and the internal thread of the moving block is connected with a threaded rod, one end of the threaded rod is rotatably connected with a clamping plate two, and the outer surface of the clamping plate two is fixedly connected with the upper surface of the base, one end of the threaded rod is fixedly connected with a motor, and one end of the threaded rod rotates and penetrates the inner wall of the box body, the motor is fixedly connected to the outer surface of the box body, and the upper surface of the upper cover is fixedly connected with a vacuum extractor.

[0008] Furthermore, the outer surface of the box is fixedly connected to an air inlet pipe, one end of the air inlet pipe is fixedly connected to an air inlet cylinder, the air inlet cylinder is fixedly connected to the outer surface of the box, the outer surface of the box is fixedly connected to an air outlet pipe, one end of the air outlet pipe is fixedly connected to an air outlet cylinder, and the outer surface of the air outlet cylinder is fixedly connected to the outer surface of the box.

[0009] Furthermore, a convex groove is provided on the upper surface of the box body, a convex block is fixedly connected to the bottom surface of the upper cover, and an outer surface of the convex block is slidably connected to an inner wall of the convex groove.

[0010] Furthermore, a rubber pad is fixedly connected to the outer surface of the first clamping plate, and the rubber pad is evenly distributed on the outer surface of the first clamping plate.

[0011] Furthermore, a groove is provided on the upper surface of the base, and the outer surface of the moving block is slidably connected to the inner wall of the groove.

[0012] Furthermore, the outer surface of the box body is fixedly connected to a detection tube, and one end of the detection tube is fixedly connected to an air pressure detector.

[0013] Furthermore, a pull ring is fixedly connected to the outer surface of the upper cover, and an anti-slip pad is fixedly connected to the outer surface of the pull ring.

[0014] 3) Beneficial effects:

[0015] Compared with the prior art, the airtightness detection device for the second and third stage intake valves has the following beneficial effects:

[0016] 1. The utility model places the second and third stage air intake valves on the base through the cooperation between the moving block, the first clamping plate, the threaded rod, the second clamping plate and the motor, starts the motor, and the output shaft end of the motor drives the threaded rod to rotate, thereby driving the moving block to approach the second clamping plate, and the moving block drives the first clamping plate to approach the second clamping plate, so that the second and third stage air intake valves are fixedly installed, which solves the problem that the existing second and third stage air intake valves have different sizes and one device can only detect second and third stage air intake valves of one size, which greatly shortens the practicability of the detection device, and increases the detection time and reduces the detection efficiency for second and third stage air intake valves of different sizes.

[0017] 2. The utility model cooperates among a vacuum extractor, an air inlet pipe, an air inlet cylinder, an air outlet pipe, an air outlet cylinder and an air pressure detector. When performing detection, the vacuum extractor is started to exhaust the air inside the closed space composed of the upper cover, the box body and the bottom plate. The gas enters the second and third stage air inlet valves from the air inlet cylinder and the air inlet pipe, and is discharged from the air outlet pipe and the air outlet cylinder. Note the changes in the air pressure detector. If there is no change, it means that the air tightness of the second and third stage air inlet valves is good. This solves the problem that most of the prior art uses kerosene leak test method to detect the sealing of the air valve, pours kerosene into the air flow channel of the lift limiter, and observes whether the kerosene produces continuous dripping to judge whether the air tightness of the air valve is qualified, and the detection accuracy is not high. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the local structure of the utility model;

[0020] Figure 3 It is a partial structural sectional view of the utility model;

[0021] Figure 4 It is an exploded view of the local structure of the utility model.

[0022] In the figure: 1. bottom plate; 2. base; 3. box body; 4. upper cover; 5. moving block; 6. step column; 7. clamping plate one; 8. threaded rod; 9. clamping plate two; 10. motor; 11. vacuum pump; 12. air inlet pipe; 13. air inlet cylinder; 14. air outlet pipe; 15. air outlet cylinder; 16. convex groove; 17. convex block; 18. rubber pad; 19. groove; 20. detection tube; 21. air pressure detector; 22. pull ring; 23. anti-slip pad. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figure 1-4As shown, the utility model provides a technical solution: an airtight detection device for a two-stage and three-stage air intake valve, comprising a bottom plate 1, a base 2 is fixedly connected to the upper surface of the bottom plate 1, a box body 3 is fixedly connected to the upper surface of the bottom plate 1, a detection tube 20 is fixedly connected to the outer surface of the box body 3, and an air pressure detector 21 is fixedly connected to one end of the detection tube 20. After the gas is introduced, the gas enters the air intake pipe 12, passes through the two-stage and three-stage air intake valves, and is discharged from the air outlet pipe 14. It is observed whether the parameters of the air pressure detector 21 change. If so, it means that the airtightness of the two-stage and three-stage air intake valves is unqualified and there is a leakage. If not, it means that no air enters the box body 3, there is no leakage in the two-stage and three-stage air intake valves, and the airtightness is qualified.

[0025] The upper surface of the box body 3 is slidably connected to the upper cover 4, and the outer surface of the upper cover 4 is fixedly connected to a pull ring 22, and the outer surface of the pull ring 22 is fixedly connected to a non-slip pad 23. By pulling the pull ring 22, the upper cover 4 can be moved, and the upper cover 4 can be disassembled and installed, which is convenient for replacing and placing second and third stage air intake valves of different sizes. A convex groove 16 is provided on the upper surface of the box body 3, and a protrusion 17 is fixedly connected to the bottom surface of the upper cover 4. The outer surface of the protrusion 17 is slidably connected to the inner wall of the convex groove 16, and the outer contour of the protrusion 17 is consistent with the inner wall of the convex groove 16. When the upper cover 4 is moved, the protrusion 17 will slide on the inner wall of the convex groove 16.

[0026] The upper surface of the base 2 is slidably connected with a moving block 5, and a groove 19 is provided on the upper surface of the base 2. The outer surface of the moving block 5 is slidably connected with the inner wall of the groove 19. The inner wall of the groove 19 is consistent with the shape of the moving block 5 and is concave-convex. The inner wall of the groove 19 is coated with lubricating oil, so that the moving block 5 can slide smoothly.

[0027] The upper surface of the moving block 5 is fixedly connected with a step column 6, the bottom surface of the step column 6 is slidably connected to the upper surface of the base 2, the outer surface of the step column 6 is fixedly connected with a clamping plate 7, the outer surface of the clamping plate 7 is fixedly connected with a rubber pad 18, the rubber pad 18 is evenly distributed on the outer surface of the clamping plate 7, the rubber pad 18 can prevent the clamping plate 7 from being over-squeezed and causing damage to the second and third stage intake valves.

[0028] The bottom surface of the splint 7 is slidably connected to the upper surface of the base 2, the internal thread of the moving block 5 is connected to a threaded rod 8, one end of the threaded rod 8 is rotatably connected to a splint 2 9, the splint 2 9 is composed of two parts, the upper part is similar in shape to the splint 1 7, and the lower part is rotatably connected to the threaded rod 8, the outer surface of the splint 2 9 is fixedly connected to the upper surface of the base 2, one end of the threaded rod 8 is fixedly connected to a motor 10, one end of the threaded rod 8 rotates and penetrates the inner wall of the box body 3, the motor 10 is fixedly connected to the outer surface of the box body 3, and the upper surface of the upper cover 4 is fixedly connected to a vacuum extractor 11.

[0029] The outer surface of the box body 3 is fixedly connected with an air inlet pipe 12, one end of the air inlet pipe 12 is fixedly connected with an air inlet cylinder 13, the air inlet cylinder 13 is fixedly connected to the outer surface of the box body 3, the outer surface of the box body 3 is fixedly connected with an air outlet pipe 14, one end of the air outlet pipe 14 is fixedly connected with an air outlet cylinder 15, the outer surface of the air outlet cylinder 15 is fixedly connected to the outer surface of the box body 3, the vacuum pump 11 is started to exhaust the air inside the box body 3, the gas enters the second and third stage air inlet valves from the air inlet cylinder 13 and the air inlet pipe 12, and is discharged from the air outlet pipe 14 and the air outlet cylinder 15.

[0030] Working principle: When using the device, pull the pull ring 22 to move the upper cover 4, disassemble the upper cover 4, place the second and third stage air intake valve on the base 2, install the air intake pipe 12 and the air outlet pipe 14 on the second and third stage air intake valve, start the motor 10, and the output shaft end of the motor 10 drives the threaded rod 8 to rotate, thereby driving the moving block 5 to move, and the moving block 5 drives the clamping plate 1 7 to approach the clamping plate 2 9 through the step column 6, and the second and third stage air intake valve is fixedly installed. Second and third stage air intake valves of different specifications can be installed, pull the pull ring 22 again, install the upper cover 4, and after installation, start the vacuum pump 11 to exhaust the air inside the box 3, and the gas enters the second and third stage air intake valve from the air intake cylinder 13 through the air intake pipe 12, and is discharged from the air outlet pipe 14 and the air outlet cylinder 15. At this time, pay attention to the changes in the air pressure detector 21. If there is no change, it means that the air tightness of the second and third stage air intake valve is good.

Claims

1. An airtightness detection device for a second or third stage air intake valve, comprising a bottom plate (1), characterized in that: The upper surface of the bottom plate (1) is fixedly connected to a base (2), the upper surface of the bottom plate (1) is fixedly connected to a box body (3), the upper surface of the box body (3) is slidably connected to an upper cover (4), the upper surface of the base (2) is slidably connected to a moving block (5), the upper surface of the moving block (5) is fixedly connected to a step column (6), the bottom surface of the step column (6) is slidably connected to the upper surface of the base (2), the outer surface of the step column (6) is fixedly connected to a clamping plate (7), the bottom surface of the clamping plate (7) is slidably connected to the base ( The movable block (5) is slidably connected to the upper surface of the housing (2); the internal thread of the movable block (5) is connected to a threaded rod (8); one end of the threaded rod (8) is rotatably connected to a clamping plate (9); the outer surface of the clamping plate (9) is fixedly connected to the upper surface of the base (2); one end of the threaded rod (8) is fixedly connected to a motor (10); one end of the threaded rod (8) is rotatably connected to the inner wall of the housing (3); the motor (10) is fixedly connected to the outer surface of the housing (3); and the upper surface of the upper cover (4) is fixedly connected to a vacuum extractor (11).

2. The air tightness detection device for a second or third stage air intake valve according to claim 1, characterized in that: The outer surface of the box body (3) is fixedly connected to an air inlet pipe (12), one end of the air inlet pipe (12) is fixedly connected to an air inlet cylinder (13), the air inlet cylinder (13) is fixedly connected to the outer surface of the box body (3), the outer surface of the box body (3) is fixedly connected to an air outlet pipe (14), one end of the air outlet pipe (14) is fixedly connected to an air outlet cylinder (15), the outer surface of the air outlet cylinder (15) is fixedly connected to the outer surface of the box body (3).

3. The air tightness detection device for a second or third stage air intake valve according to claim 1, characterized in that: The upper surface of the box body (3) is provided with a convex groove (16), the bottom surface of the upper cover (4) is fixedly connected with a convex block (17), and the outer surface of the convex block (17) is slidably connected to the inner wall of the convex groove (16).

4. The air tightness detection device for a second or third stage air intake valve according to claim 1, characterized in that: The outer surface of the clamping plate one (7) is fixedly connected with a rubber pad (18), and the rubber pad (18) is evenly distributed on the outer surface of the clamping plate one (7).

5. The airtightness detection device for a second or third stage air intake valve according to claim 1, characterized in that: The upper surface of the base (2) is provided with a groove (19), and the outer surface of the moving block (5) is slidably connected to the inner wall of the groove (19).

6. The air tightness detection device for a second or third stage air intake valve according to claim 1, characterized in that: The outer surface of the box body (3) is fixedly connected to a detection tube (20), and one end of the detection tube (20) is fixedly connected to an air pressure detector (21).

7. The airtightness detection device for a second or third stage air intake valve according to claim 1, characterized in that: A pull ring (22) is fixedly connected to the outer surface of the upper cover (4), and an anti-slip pad (23) is fixedly connected to the outer surface of the pull ring (22).