Device for detecting air leakage position of cloth-sandwiched diaphragm

Abstract

The utility model discloses a device for detecting the air leakage position of a cloth-sandwiched diaphragm, which comprises a main body, side pressing plates are fixedly mounted on two sides of the main body, a sealing groove is arranged above the main body, a fastening bump is fixedly connected above the main body, a water storage tank is arranged in the middle of the interior of the main body, an upper pressing plate is arranged above the main body, and a water outlet is formed in the upper pressing plate. And a sealing ring is fixedly connected below the upper pressing plate. The diaphragm is installed between the main body and the upper pressing plate, the fastening groove and the fastening protruding block are connected, the side fixing bolts and the middle fixing bolts are fixedly installed, and a closed cavity is formed between the testing device and the diaphragm. When compressed air enters the test device through the air inlet hole, the compressed air escapes to other places with openings through the gap between the rubber and the fabric at the flange edge or the bolt hole, and at the moment, only leakage detection liquid needs to be sprayed on the surface of the diaphragm or water needs to be added into the water storage tank to find a bubbling place which is a leakage point of diaphragm damage.

Description

Technical Field

[0001] The utility model relates to a device for testing the leakage position of a diaphragm, in particular the device can detect the cause of leakage of a diaphragm bolt hole or a flange edge and find out where the gas leaks from. Background Art

[0002] The cloth-reinforced rubber diaphragm is a key part of the pneumatic actuator. It is installed in the diaphragm box of the actuator. The diaphragm in the actuator continuously reciprocates to adjust the opening and closing of the valve, thereby controlling the size of the pipeline flow. The quality of the diaphragm directly affects the stability of the operation of the pneumatic actuator. Diaphragm flange hole and outer circle leakage are common types of diaphragm defects, but there are many factors that lead to this defect. It is more important to find out where the air in this part leaks from. Since the diaphragm is installed in the diaphragm box, only the surface phenomenon of air leakage at the diaphragm bolt hole or the gap between the outermost rubber and the fabric on the flange can be observed, but the root cause of the diaphragm leakage cannot be found. Therefore, it is particularly important to develop a device to test the diaphragm leakage point. Utility Model Content

[0003] The utility model provides a device for inspecting the leakage position of a cloth-reinforced diaphragm. The diaphragm is installed between the main body and the upper pressure plate, the fastening groove and the fastening protrusion are connected, and the side fixing bolts and the middle fixing bolts are fixed to form a closed cavity between the test device and the diaphragm. When compressed gas enters the test device through the air inlet, the compressed gas will escape to other places with open openings through the gap between the rubber and the fabric at the flange edge or the bolt hole. At this time, it is only necessary to spray a leak detection liquid on the surface of the diaphragm or add water to the water tank to find the place where bubbles appear, which is the leakage point of the damaged diaphragm.

[0004] To achieve the above-mentioned purpose, a device for inspecting the air leakage position of a cloth-reinforced diaphragm is provided, comprising a main body, side pressure plates are fixedly installed on both sides of the main body, a sealing groove is grooved on the top of the main body, a fastening protrusion is fixedly connected to the top of the main body, a water storage tank is arranged in the middle of the main body, an upper pressure plate is arranged on the top of the main body, a sealing ring is fixedly connected to the lower part of the upper pressure plate, and a fastening groove is grooved on the lower part of the upper pressure plate to facilitate the fixed installation of the upper pressure plate, the sealing groove is arranged to facilitate the sealing of the upper pressure plate and the internal space of the main body to form a closed cavity, the fastening protrusion is arranged to facilitate the fixed installation of the upper pressure plate, the water storage tank is arranged to facilitate the detection of the position of the diaphragm damage point after adding water, the upper pressure plate is arranged to facilitate the fixing of the diaphragm and the formation of a closed cavity with the diaphragm, the sealing ring is arranged to facilitate the sealing of the upper pressure plate and the internal space of the main body to form a closed cavity with the diaphragm, and the fastening groove is arranged to facilitate the fixed installation of the upper pressure plate.

[0005] According to the device for checking the leakage position of the cloth-reinforced diaphragm, the upper opening of the side pressure plate is provided with a side fixing screw hole, and the middle opening of the fastening protrusion is provided with a middle fixing screw hole. The side fixing screw hole is provided to facilitate the fixing and installation of the side fixing bolts, and the middle fixing screw hole is provided to facilitate the fixing and installation of the middle fixing bolts.

[0006] According to the device for checking the leakage position of the cloth-reinforced diaphragm, the side fixing screw holes are installed with side fixing bolts, and the middle fixing screw holes are installed with middle fixing bolts. The side fixing bolts are provided to facilitate the fixing and installation of the upper pressure plate, and the middle fixing screw holes are provided to facilitate the fixing and installation of the upper pressure plate.

[0007] According to the device for inspecting the leakage position of the cloth-reinforced diaphragm, an air inlet is fixedly installed above the upper pressure plate, and a diaphragm is provided on the water storage tank. The air inlet is provided to facilitate the addition of compressed gas into the device.

[0008] The beneficial effects of the utility model are as follows: by installing the diaphragm between the main body and the upper pressure plate, connecting the fastening groove and the fastening protrusion, and fixing the side fixing bolts and the middle fixing bolts, a closed cavity is formed between the test device and the diaphragm. When the compressed gas enters the test device through the air inlet, the compressed gas will escape to other places with open openings through the gap between the rubber and the fabric at the flange edge or the bolt hole. At this time, it is only necessary to spray the leak detection liquid on the surface of the diaphragm or add water to the water tank to find the place where bubbles appear, which is the leakage point of the damaged diaphragm.

[0009] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0011] Figure 1 This is a three-dimensional diagram of the external structure of a device for inspecting the air leakage position of a cloth-reinforced diaphragm according to the utility model;

[0012] Figure 2 This is a three-dimensional diagram of the external structure of a device for inspecting the air leakage position of a cloth-reinforced diaphragm according to the utility model;

[0013] Figure 3 This is a three-dimensional diagram of the external structure of an upper pressing plate of a device for inspecting the air leakage position of a cloth-reinforced diaphragm according to the utility model;

[0014] Figure 4 For this utility model Figure 2 A is an enlarged view of the middle image.

[0015] Legend:

[0016] 1. Main body; 2. Side pressure plate; 3. Upper pressure plate; 4. Side fixing bolts; 5. Middle fixing bolts; 6. Sealing groove; 7. Diaphragm; 8. Air inlet; 9. Side fixing screw hole; 10. Water storage tank; 11. Fastening protrusion; 12. Middle fixing screw hole; 13. Fastening groove; 14. Sealing ring; 15. Rubber; 16. Fabric. DETAILED DESCRIPTION

[0017] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0018] Reference Figures 1 to 4 The utility model embodiment is a device for checking the leakage position of a cloth-reinforced diaphragm, which includes a main body 1, side pressure plates 2 are fixedly installed on both sides of the main body 1, a sealing groove 6 is grooved on the top of the main body 1, a fastening protrusion 11 is fixedly connected to the top of the main body 1, a water tank 10 is arranged in the middle of the main body 1, an upper pressure plate 3 is arranged on the top of the main body 1, a sealing ring 14 is fixedly connected below the upper pressure plate 3, and a fastening groove 13 is grooved below the upper pressure plate 3.

[0019] The side pressure plate 2 is provided with a side fixing screw hole 9 at the opening above the side pressure plate 2, the fastening protrusion 11 is provided with a middle fixing screw hole 12 at the middle opening, the side fixing screw hole 9 is installed with a side fixing bolt 4, the middle fixing screw hole 12 is installed with a middle fixing bolt 5, an air inlet hole 8 is fixedly installed above the upper pressure plate 3, a diaphragm 7 is provided on the water tank 10, a rubber 15 is provided on the outer side of the diaphragm 7, and a fabric 16 is provided on the inner side of the diaphragm 7.

[0020] Working principle: first, place the diaphragm 7 to be checked on the main body 1, place the upper pressure plate 3 on the diaphragm 7, insert the fastening protrusion 11 into the fastening groove 13, and at the same time insert the sealing ring 14 into the sealing groove 6, fix the side fixing bolts 4 and the middle fixing bolts 5 to clamp the diaphragm 7, fill the compressed gas into the air inlet 8 to reach the required pressure, and then add water to the water tank 10 to find the leak point.

[0021] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A device for checking the leakage position of a cloth-inserted diaphragm, comprising a main body (1), characterized in that: Side pressure plates (2) are fixedly installed on both sides of the main body (1), a sealing groove (6) is grooved on the top of the main body (1), a fastening protrusion (11) is fixedly connected to the top of the main body (1), a water storage tank (10) is arranged in the middle of the main body (1), an upper pressure plate (3) is arranged on the top of the main body (1), a sealing ring (14) is fixedly connected to the bottom of the upper pressure plate (3), and a fastening groove (13) is grooved on the bottom of the upper pressure plate (3).

2. A device for checking the air leakage position of a cloth-reinforced diaphragm according to claim 1, characterized in that: The upper opening of the side pressure plate (2) is provided with a side fixing screw hole (9), and the middle opening of the fastening protrusion (11) is provided with a middle fixing screw hole (12).

3. A device for checking the air leakage position of a cloth-reinforced diaphragm according to claim 2, characterized in that: The side fixing screw holes (9) are mounted with side fixing bolts (4), and the middle fixing screw holes (12) are mounted with middle fixing bolts (5).

4. The device for checking the air leakage position of the cloth-inserted diaphragm according to claim 1, characterized in that: An air inlet hole (8) is fixedly mounted above the upper pressure plate (3), and a diaphragm (7) is provided on the water storage tank (10).

5. A device for checking the air leakage position of a cloth-reinforced diaphragm according to claim 4, characterized in that: The outer side of the diaphragm (7) is provided with rubber (15), and the inner side of the diaphragm (7) is provided with fabric (16).

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