Quick-change structure of detection pressure gauge

Abstract

The utility model discloses quick change structure of detection pressure gauge, apply to the installation and fixation of pressure gauge main part, include: fixed plate, fixed component and closed component, fixed component includes the air inlet portion of setting in the top of fixed plate, and the bottom screw thread of pressure gauge main part is connected in the top of air inlet portion, and the bottom outside of pressure gauge main part is provided with the holding part, and closed component includes the surrounding portion of setting in the top of fixed plate, and the side of fixed plate is provided with the communicating portion. The utility model discloses the holding part is provided with in the insertion connection place of air inlet portion and pressure gauge main part top of fixed plate, and the user is through holding rotary holding part, and the pressure gauge main part of detection is rotated and is installed and is rotated and is separated, compared with the direct holding pressure gauge main part outside and rotating alignment installation, and this holding part design avoided the skidding phenomenon of direct holding pressure gauge main part easy to appear, and then avoided the holding skidding of multiple times and extended the holding dismounting time of pressure gauge main part.

Description

Technical Field

[0001] This utility model relates to the field of pressure gauge testing, and in particular to a quick-change structure for testing pressure gauges. Background Technology

[0002] In the manufacturing process of pressure gauges, leakage detection is a key step to ensure product quality. Traditional testing processes require operators to directly hold the pressure gauge body and rotate it to assemble or disassemble it with the testing equipment.

[0003] However, pressure gauge housings are usually made of smooth metal or have a coating, resulting in a low coefficient of friction. When held directly, they are prone to slipping due to hand sweat, oil, or vibration, and the repeated adjustment of the holding posture prolongs the time for a single test.

[0004] Therefore, how to achieve stable holding and quick disassembly / reassembly during the pressure gauge leakage detection process has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] The purpose of this invention is to provide a quick-change structure for a pressure gauge to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a quick-change structure for a pressure gauge, used for the installation and fixing of the pressure gauge body, comprising:

[0007] Fixing plate;

[0008] A fixing component is used to limit the pressure gauge body and the fixing plate. The fixing component includes an air inlet provided on the top of the fixing plate. The bottom of the pressure gauge body is threadedly connected to the top of the air inlet. A gripping part for assisting the pressure gauge body to be held and rotated is provided on the outer side of the bottom of the pressure gauge body.

[0009] A sealing assembly for sealing and evacuating the pressure gauge body, the sealing assembly including a surrounding portion disposed on the top of a fixed plate, and a connecting portion for evacuation disposed on the side of the fixed plate.

[0010] Preferably, the air inlet includes an air injection nozzle, and a plurality of air injection nozzles are disposed on the top of the fixed plate. The air injection nozzles are used for helium to enter the pressure gauge body.

[0011] Preferably, the gripping portion includes:

[0012] A rotating sleeve is fitted onto the bottom outer side of the pressure gauge body, and the inner cavity of the rotating sleeve is set as a regular hexagon.

[0013] A fixed sleeve is disposed on the side of the rotating sleeve, and the fixed sleeve is used for gripping and rotating the rotating sleeve;

[0014] An extension member is disposed at the end of the fixed sleeve away from the rotating sleeve, and the extension member is used to assist in extending the grip of the fixed sleeve.

[0015] Preferably, the extension includes:

[0016] An extension rod, one end of which is inserted into the inner cavity of a fixed sleeve;

[0017] A grip is provided at the other end of the extension rod, and the grip is used for gripping and pulling the extension rod.

[0018] A positioning structure is provided on the outside of the fixed sleeve, and the positioning structure is used to insert the positioning extension rod.

[0019] Preferably, the positioning structure includes:

[0020] A movable column, one end of which is inserted and connected to the outside of the fixed sleeve and the outside of the extension rod;

[0021] A compression spring, wherein the compression spring is disposed at the other end of the movable column;

[0022] A limiting post is provided at the end of the compression spring away from the movable post.

[0023] Preferably, a limiting groove is provided on the side of the extension rod, and the limiting groove is used for the end of the movable column to pass through.

[0024] Preferably, the surrounding portion includes:

[0025] A sealing cover is disposed on the top of the fixed plate;

[0026] A sealing strip is provided at the connection between the fixing plate and the sealing cover, and the sealing strip is used to seal the connection gap between the fixing plate and the sealing cover.

[0027] A plurality of limiting protrusions are disposed on the top of the fixing plate, and the limiting protrusions are used to limit the sealing cover.

[0028] Preferably, the connecting part includes a suction detection tube, which is disposed at the bottom of the fixed plate and is used for suction of gas inside the sealing cover.

[0029] Preferably, the bottom of the fixing plate is symmetrically provided with multiple support legs.

[0030] The technical effects and advantages of this utility model are as follows:

[0031] This invention features a grip at the point where the air inlet on the top of the fixed plate intersects with the pressure gauge body. Users can directly rotate the grip to install and detach the pressure gauge body. Compared to directly gripping the outside of the pressure gauge body for alignment, this design avoids slippage that can easily occur when directly gripping the pressure gauge body, thus preventing repeated slippage and extending the time required to assemble and disassemble the pressure gauge body. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0033] Figure 2 This is a front view of the entire utility model.

[0034] Figure 3 This is a partial cross-sectional view of the connection between the overall structure of this utility model and the main body of the pressure gauge.

[0035] Figure 4 This is a cross-sectional view of the gripping part of this utility model.

[0036] In the diagram: 1. Fixed plate; 101. Air inlet; 102. Sealing strip; 103. Air extraction detection tube; 2. Pressure gauge body; 3. Support leg; 4. Grip; 401. Fixed sleeve; 402. Extension rod; 4021. Limiting groove; 403. Handle; 404. Compression spring; 405. Movable column; 406. Limiting column; 407. Rotating sleeve; 5. Sealing cover; 6. Limiting protrusion. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] Example 1: This utility model provides the following... Figure 1 - Figure 4 The quick-change structure of the pressure gauge shown is used for the installation and fixation of the pressure gauge body 2, and includes: a fixing plate 1, a fixing component and a sealing component;

[0039] It should be noted that the fixing component is used to limit the pressure gauge body 2 and the fixing plate 1, and the sealing component is used to seal and evacuate the pressure gauge body 2. The sealing component includes a surrounding part set on the top of the fixing plate 1, and the side of the fixing plate 1 is provided with a connecting part for evacuation.

[0040] Specifically, the fixing component includes an air inlet located on the top of the fixing plate 1, the bottom of the pressure gauge body 2 being threadedly connected to the top of the air inlet, and a gripping part 4 for assisting the pressure gauge body 2 in gripping and rotating is provided on the outer side of the bottom of the pressure gauge body 2.

[0041] It should be noted that the air inlet includes an air inlet nozzle 101, and multiple air inlets 101 are disposed on the top of the fixed plate 1. The air inlet nozzle 101 is used for helium to enter the pressure gauge body 2.

[0042] Specifically, the bottom of the air injector 101 is inserted and connected to the top of the fixing plate 1, and the insertion point is fixed by welding. The inner wall of the air injector 101 is threaded for the threaded insertion of the pressure gauge body 2. The unused air injector 101 is sealed by inserting a plug.

[0043] Furthermore, the gripping part 4 includes: a rotating sleeve 407, a fixed sleeve 401, and an extension member;

[0044] It should be noted that the rotating sleeve 407 is sleeved on the bottom outer side of the pressure gauge body 2, the inner cavity cross section of the rotating sleeve 407 is set as a regular hexagon, the fixed sleeve 401 is set on the side of the rotating sleeve 407, the fixed sleeve 401 is used for gripping and rotating the rotating sleeve 407, and the extension is set at the end of the fixed sleeve 401 away from the rotating sleeve 407.

[0045] Specifically, the extension is used to extend the grip of the fixed sleeve 401. The bottom outer side of the pressure gauge body 2 is set as a hexagonal protrusion to facilitate the later use and installation of the pressure gauge body 2. At the same time, the rotating sleeve 407 is engaged with the hexagonal protrusion. The rotating sleeve 407 is made of stainless steel. The fixed sleeve 401 and the rotating sleeve 407 are fixed by welding.

[0046] Furthermore, the extension includes: an extension rod 402, a grip 403, and a positioning structure;

[0047] It should be noted that one end of the extension rod 402 is inserted into the inner cavity of the fixed sleeve 401, and the handle 403 is set at the other end of the extension rod 402. The handle 403 is used for gripping and pulling the extension rod 402. The positioning structure is set on the outside of the fixed sleeve 401. The positioning structure is used to insert and position the extension rod 402.

[0048] Specifically, the handle 403 is welded to the other end of the extension rod 402, and the handle 403 is used for the pull-out extension of the extension rod 402.

[0049] It should be noted that the positioning structure includes: a movable column 405, a compression spring 404, and a limiting column 406;

[0050] Specifically, one end of the movable column 405 is inserted and connected to the outside of the fixed sleeve 401 and the outside of the extension rod 402, the compression spring 404 is disposed at the other end of the movable column 405, and the limiting column 406 is disposed at the end of the compression spring 404 away from the movable column 405.

[0051] Specifically, a limiting groove 4021 is provided on the side of the extension rod 402. The limiting groove 4021 is used for the end of the movable column 405 to pass through. One end of the movable column 405 is set as a spherical protrusion. The movable column 405 is welded and fixed to the end of the compression spring 404. The limiting column 406 is welded and fixed to the end of the compression spring 404. The limiting column 406 is welded and fixed to the fixed sleeve 401. The limiting groove 4021 is a hemispherical groove, which facilitates the movable column 405 to squeeze out of the limiting groove 4021. The interlocking and combination of the movable column 405 and the limiting groove 4021 allows the extension rod 402 to be pulled out, thereby extending the rotation arm of the fixed sleeve 401.

[0052] Specifically, the bottom of the fixed plate 1 is symmetrically provided with multiple support legs 3, and the connecting part includes an air extraction detection pipe 103, which is located at the bottom of the fixed plate 1.

[0053] It should be noted that the support leg 3 is fixed to the fixing plate 1 by welding.

[0054] Example 2: A surround part applied to the quick-change structure of the pressure gauge in Example 1.

[0055] Specifically, the enclosure includes: a sealing cover 5, a sealing strip 102, and a limiting protrusion 6;

[0056] It should be noted that the sealing cover 5 is set on the top of the fixing plate 1, the sealing strip 102 is set at the connection between the fixing plate 1 and the sealing cover 5, the sealing strip 102 is used to seal the connection gap between the fixing plate 1 and the sealing cover 5, and multiple limiting protrusions 6 are set on the top of the fixing plate 1, the limiting protrusions 6 are used to limit the sealing cover 5.

[0057] Specifically, the sealing strip 102 is made of silicone and is glued to the fixing plate 1. The sealing strip 102 is used to fill the gap at the connection between the fixing plate 1 and the sealing cover 5. The suction detection tube 103 is used to draw gas from the inner cavity of the sealing cover 5. By drawing gas from the gap between the sealing cover 5 and the fixing plate 1, a stable negative pressure is formed. When the pressure gauge body 2 leaks, helium enters the negative pressure space and flows with the suction detection tube 103, and is detected by the subsequent helium leak detector.

[0058] In actual use, a gripping part 4 is provided at the interlocking connection between the air inlet at the top of the fixed plate 1 and the pressure gauge body 2. The user can directly rotate the pressure gauge body 2 to be tested by gripping and rotating the gripping part 4. Compared with directly gripping the outside of the pressure gauge body 2 for rotation and alignment, this design uses the gripping part 4 instead of directly gripping the pressure gauge body 2, avoiding the slippage that is easy to occur when directly gripping the pressure gauge body 2, and thus avoiding repeated gripping and slippage that prolongs the gripping and disassembly time of the pressure gauge body 2.

[0059] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick-change structure for testing pressure gauges, used for the installation and fixing of the pressure gauge body (2), characterized in that, include: Fixing plate (1); The fixing component is used to limit the pressure gauge body (2) and the fixing plate (1). The fixing component includes an air inlet provided on the top of the fixing plate (1). The bottom of the pressure gauge body (2) is threadedly connected to the top of the air inlet. The bottom outer side of the pressure gauge body (2) is provided with a gripping part (4) for assisting the pressure gauge body (2) in gripping and rotating. A sealing assembly is used for sealing and evacuating the pressure gauge body (2). The sealing assembly includes a surrounding portion disposed on the top of a fixed plate (1), and the side of the fixed plate (1) is provided with a connecting portion for evacuation.

2. The quick-change structure of the pressure gauge according to claim 1, characterized in that, The air inlet includes an air inlet (101), and a plurality of air inlets (101) are disposed on the top of the fixed plate (1). The air inlet (101) is used for helium to enter the pressure gauge body (2).

3. The quick-change structure of the pressure gauge according to claim 2, characterized in that, The gripping part (4) includes: Rotating sleeve (407), the rotating sleeve (407) is sleeved on the bottom outer side of the pressure gauge body (2), and the inner cavity cross section of the rotating sleeve (407) is set as a regular hexagon; A fixed sleeve (401) is provided on the side of the rotating sleeve (407), and the fixed sleeve (401) is used for gripping and rotating the rotating sleeve (407). An extension member is disposed at one end of the fixed sleeve (401) away from the rotating sleeve (407), and the extension member is used to assist in extending the grip of the fixed sleeve (401).

4. The quick-change structure of the pressure gauge according to claim 3, characterized in that, The extension includes: An extension rod (402) is inserted into the inner cavity of a fixed sleeve (401) at one end. A grip (403) is provided at the other end of the extension rod (402), and the grip (403) is used for gripping and pulling the extension rod (402); A positioning structure is provided on the outside of the fixed sleeve (401), and the positioning structure is used to insert the positioning extension rod (402).

5. The quick-change structure of the pressure gauge according to claim 4, characterized in that, The positioning structure includes: A movable column (405) is inserted and connected at one end to the outside of the fixed sleeve (401) and the outside of the extension rod (402); A compression spring (404) is disposed at the other end of the movable column (405); A limiting post (406) is provided at the end of the compression spring (404) away from the movable post (405).

6. The quick-change structure of the pressure gauge according to claim 5, characterized in that, The extension rod (402) has a limiting groove (4021) on its side, and the limiting groove (4021) is used for the end of the movable column (405) to pass through.

7. The quick-change structure for the pressure gauge according to claim 1, characterized in that, The surrounding portion includes: A sealing cover (5) is disposed on the top of the fixing plate (1); A sealing strip (102) is provided at the connection between the fixing plate (1) and the sealing cover (5). The sealing strip (102) is used to seal the connection gap between the fixing plate (1) and the sealing cover (5). Limiting protrusions (6), a plurality of the limiting protrusions (6) are disposed on the top of the fixing plate (1), the limiting protrusions (6) are used to limit the sealing cover (5).

8. The quick-change structure for the pressure gauge according to claim 7, characterized in that, The connecting part includes a suction detection tube (103), which is located at the bottom of the fixed plate (1) and is used for suction of gas inside the sealing cover (5).

9. The quick-change structure of the pressure gauge according to claim 8, characterized in that, The bottom of the fixing plate (1) is symmetrically provided with multiple support legs (3).

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