Shock resistant pressure gauge seal

Abstract

The utility model discloses a kind of shock-resistant pressure gauge sealing devices, including watchcase and watch cover, the lower part of watchcase is equipped with notch, notch is used to connect the through of joint, joint is in abutment with notch, the first sealing gasket of the notch is equipped with the section of L type, pressure plate is equipped above first sealing gasket, pressure plate is connected with watchcase by bolt, the middle hollow of watch cover is set, glass is equipped between watchcase and watch cover, glass blocks the hollow portion of the middle of watch cover, sealing structure is equipped at the contact of watchcase, watch cover glass. The utility model is equipped with sealing structure by being set to the connecting place of watchcase, watch cover and being equipped with sealing structure at the notch of the lower part of watchcase, realize the sealing of gap after pressure gauge assembly, prevent filling medium leakage, so that it has longer service life under high vibration condition.

Description

Technical Field

[0001] This utility model relates to the field of pressure gauge technology, specifically to a vibration-resistant pressure gauge sealing device. Background Technology

[0002] Pressure gauges are instruments that use elastic elements as sensing elements to measure and indicate pressures higher than ambient pressure, and their applications are extremely widespread. When using pressure gauges under conditions of high mechanical vibration, the internal mechanical structure can be damaged due to the vibration, affecting the accuracy of pressure measurement. Therefore, glycerin or silicone oil is generally added to the pressure gauge to reduce mechanical damage to the internal structure caused by vibration. However, adding glycerin or silicone oil can result in poor sealing performance between the gauge casing and cover, leading to leakage, indicating room for improvement. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of the aforementioned background technology by providing a vibration-resistant pressure gauge sealing device that ensures the sealing effect of the vibration-resistant pressure gauge.

[0004] To achieve the above objectives, this utility model provides a vibration-resistant pressure gauge sealing device, which adopts the following technical solution:

[0005] A vibration-resistant pressure gauge sealing device includes a gauge case and a gauge cover. The lower part of the gauge case has a notch for a connecting joint to pass through. The connecting joint abuts against the notch. The notch has a first sealing gasket with an L-shaped cross-section. A pressure plate is provided above the first sealing gasket and is connected to the gauge case by bolts. The gauge cover has a hollow center. A glass is provided between the gauge case and the gauge cover, blocking the hollow part of the gauge cover. A sealing structure is provided at the contact point between the gauge case and the glass of the gauge cover.

[0006] A further improvement of the sealing device for a vibration-resistant pressure gauge of this utility model is that the sealing structure includes a second sealing gasket and a third sealing gasket. An extension plate is provided outward from one end of the gauge case near the gauge cover. A positioning plate with an L-shaped cross-section is provided in the middle of the extension plate. The second sealing gasket includes a first sealing part that is clamped between the positioning plate and the extension plate. A second sealing part with an L-shaped cross-section is provided on the outer edge of the first sealing part away from the extension plate. The glass abuts against the second sealing part. The gauge cover includes a cylindrical side plate. A bent part is provided at the end of the side plate away from the extension plate. The bent part abuts against the glass. The third sealing gasket is provided at the bent part and abuts against the second sealing part.

[0007] A further improvement of the vibration-resistant pressure gauge sealing device of this utility model is that a connecting plate is provided at the end of the outer extension plate in the direction away from the positioning plate, and the connecting plate is connected to the side plate of the gauge cover.

[0008] A further improvement of the vibration-resistant pressure gauge sealing device of this utility model is that a fixed part with an L-shaped cross section is provided on the outside of the connecting joint, and an extension part is provided downward of the notch. The extension part abuts against the fixed part, and a fourth sealing gasket is provided between the extension part and the fixed part.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] This utility model achieves sealing of the gaps after the pressure gauge is assembled by setting a sealing structure at the connection between the gauge case and the cover, and a sealing structure at the notch at the bottom of the gauge case, thus preventing leakage of the filling medium and giving it a longer service life under high vibration conditions. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 for Figure 1 A magnified view of a portion of the image;

[0014] In the diagram: 1. Case, 2. Notch, 3. Connecting joint, 4. First sealing gasket, 5. Pressure plate, 6. Glass, 7. Cover, 8. Outer extension plate, 9. Positioning plate, 10. First sealing part, 11. Second sealing part, 12. Third sealing gasket, 13. Side plate, 14. Bending part, 15. Extension part, 16. Connecting plate. Detailed Implementation

[0015] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0016] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0017] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0019] like Figure 1 and Figure 2 As shown, a vibration-resistant pressure gauge sealing device includes a gauge housing 1 and a gauge cover. The gauge housing includes a back plate and a cylindrical side plate. A notch 2 is provided at the lower part of the gauge housing 1, i.e., a notch is provided at the lower part of the cylindrical side plate. The notch is for the passage of a connecting joint 3, which abuts against the notch. A first sealing gasket 4 with an L-shaped cross-section is provided at the notch. A pressure plate 5 is provided above the first sealing gasket and is connected to the gauge housing by bolts. Specifically, the upper lower surface of the gauge housing has a downward-facing threaded groove. The gauge cover has a hollow center, and a glass 6 is provided between the gauge housing and the gauge cover. The glass covers the hollow center of the gauge cover, and a sealing structure is provided at the contact point between the gauge housing and the glass cover.

[0020] Specifically, the sealing structure includes a second gasket and a third gasket 12. An extension plate 8 is provided outwards from one end of the watch case near the cover, and a positioning plate 9 with an L-shaped cross-section is provided in the middle of the extension plate. The second gasket includes a first sealing part 10 that is fitted between the positioning plate and the extension plate. A second sealing part 11 with an L-shaped cross-section is provided on the outer edge of the first sealing part away from the extension plate. The glass abuts against the second sealing part. The cover includes a cylindrical side plate 13. A bent part 14 is provided at the end of the side plate away from the extension plate, and the bent part abuts against the glass. The third gasket is fixedly disposed at the bent part, and the third gasket abuts against the second sealing part.

[0021] A connecting plate 16 is provided at the end of the extension plate in the direction away from the positioning plate, and the connecting plate is connected to the side plate of the watch cover. The extension plate, positioning plate, connecting plate and watch case can be integrally formed.

[0022] The connecting joint has an L-shaped fixing part (not shown in the figure) on its outer side, with an extension 15 extending downwards from the notch. The extension abuts against the fixing part, and a fourth sealing gasket is provided between the extension and the fixing part. The extension and the connecting joint are detachably fixed together. Bolts can be used. The fixing part and the connecting joint can be welded together.

[0023] A fixing hole is provided on the upper part of the watch case, and a rubber plug is installed at the fixing hole.

[0024] In this invention, the glycerin or silicone oil medium is placed inside the gauge housing. Gaps exist only at the lower part of the gauge housing where it connects to the connector and at the connection point with the gauge cover. A sealing gasket is then used to seal these two points to prevent medium leakage, thereby extending the service life of the pressure gauge under high vibration conditions.

[0025] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A vibration-resistant pressure gauge sealing device, characterized in that, The watch includes a case and a cover. The case has a notch at the bottom for a connector to pass through. The connector abuts against the notch. The notch has an L-shaped first sealing gasket. A pressure plate is located above the first sealing gasket and is connected to the case by bolts. The cover has a hollow center. A glass is placed between the case and the cover, covering the hollow center of the cover. A sealing structure is provided at the contact point between the case and the cover glass.

2. The vibration-resistant pressure gauge sealing device according to claim 1, characterized in that, The sealing structure includes a second gasket and a third gasket. The watch case has an extension plate extending outward from one end near the cover. The extension plate has an L-shaped positioning plate in the middle. The second gasket includes a first sealing part that is caught between the positioning plate and the extension plate. The outer edge of the first sealing part has a second sealing part with an L-shaped cross-section on the side away from the extension plate. The glass abuts against the second sealing part. The cover includes a cylindrical side plate. The side plate has a bent part at the end away from the extension plate. The bent part abuts against the glass. The third gasket is located at the bent part and abuts against the second sealing part.

3. The vibration-resistant pressure gauge sealing device according to claim 2, characterized in that, The end of the extension plate is provided with a connecting plate in the direction away from the positioning plate, and the connecting plate is connected to the side plate of the cover.

4. The vibration-resistant pressure gauge sealing device according to claim 3, characterized in that, The outer side of the connector is provided with a fixing part with an L-shaped cross section, and the notch is provided with an extension part that abuts against the fixing part. A fourth sealing gasket is provided between the extension part and the fixing part.

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