CN220581683U - Sealing ring and small-caliber pressure gauge - Google Patents
Sealing ring and small-caliber pressure gauge Download PDFInfo
- Publication number
- CN220581683U CN220581683U CN202322125628.1U CN202322125628U CN220581683U CN 220581683 U CN220581683 U CN 220581683U CN 202322125628 U CN202322125628 U CN 202322125628U CN 220581683 U CN220581683 U CN 220581683U
- Authority
- CN
- China
- Prior art keywords
- sealing ring
- section
- small
- inferior valve
- pressure gauge
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- 238000007789 sealing Methods 0.000 title claims abstract description 51
- 241000463219 Epitheca Species 0.000 claims abstract description 8
- 229920000459 Nitrile rubber Polymers 0.000 claims description 5
- 239000012530 fluid Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 238000001125 extrusion Methods 0.000 abstract description 3
- 230000009977 dual effect Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The utility model relates to the technical field of pressure meters, in particular to a sealing ring and a small-caliber pressure meter. This application is through designing into L type with the sealing washer, and the cross section of upper segment and hypomere is the O type, and the gap can not appear in the contact between by extrusion back and epitheca, inferior valve, therefore fluid can not spill, and the hypomere has blockked fluid to a certain extent, and the upper segment blocks once more, realizes dual seal's effect to the width of upper segment is greater than the thickness of inferior valve, makes sealed effect better like this.
Description
Technical Field
The utility model relates to the technical field of pressure meters, in particular to a sealing ring and a small-caliber pressure meter.
Background
Pressure instrument often can be used in the production industry, and the instrument intussuseption is filled with fluid, in order to prevent that fluid from leaking out, can adopt the sealing washer to seal between upper shell and the inferior valve consequently, and current half adopts O type sealing washer to be located between upper shell and the inferior valve, and the table cover is located the upper shell, and the table cover is connected with the inferior valve. When the meter cover is connected with the lower shell, the O-shaped sealing ring is deformed into an ellipse, and the contact area between the sealing ring and the upper shell and the lower shell is still relatively large all the time because the sealing ring is relatively large for a pressure meter with relatively large diameter and is not deformed little by little. Some narrower places need to use the manometer that the diameter is less than the small-bore manometer, for the general name that the diameter is less than 53mm, for the small-bore manometer, after O type sealing washer warp into oval, O type sealing washer both sides and upper shell and lower shell's area of contact will reduce, perhaps even have the gap, and the fluid in the table can leak like this.
Disclosure of Invention
The utility model provides a sealing ring and a small-caliber pressure gauge, aiming at the problem that oil leakage is likely to occur due to the fact that an O-shaped sealing ring is adopted in the existing small-caliber pressure gauge.
In order to achieve the above object, the present utility model provides the following technical solutions:
in one aspect, the application provides a sealing washer for small-bore, including upper segment and hypomere, upper segment and hypomere integrated into one piece, the cross section of sealing washer is the L type.
Preferably, the sealing ring is made of hydrogenated nitrile rubber, and the hydrogenated nitrile rubber is relatively high-temperature resistant and is in a relatively high-temperature environment.
On the other hand, this application provides a small-bore manometer, including epitheca, inferior valve, table cover and sealing washer, the sealing washer adopts above-mentioned the sealing washer, the sealing washer is located between epitheca and the inferior valve, table cover is located the outside of epitheca, table cover with the inferior valve is connected, the first face of upper segment with table cover contact.
The cross section of the sealing ring is L-shaped, so that after the sealing ring is extruded, the two sides of the upper section are respectively contacted with the upper shell and the lower shell, and the two sides of the lower section are contacted with the upper shell and the lower shell more tightly after the sealing ring is extruded, and gaps are avoided between the sealing ring and the upper shell and between the sealing ring and the lower shell, so that oil leakage is avoided.
Preferably, the width L of the upper section is greater than the thickness D of the lower shell, and after the sealing ring is installed, the upper section is equivalent to a distance extending outwards beyond the lower shell, the sealing ring is extruded downwards by the upper shell, and the sealing ring is extruded inwards by the surface cover, so that the sealing effect between the sealing ring and the upper shell and between the sealing ring and the lower shell is better.
Preferably, a groove is formed in the lower shell, the watch cover is clamped into the groove, and the watch cover is connected with the lower shell in a roll riveting mode, so that the watch cover is more firmly connected with the lower shell.
Preferably, the distance between the groove and the upper plane of the lower shell is M, the length of the lower section is N, and the N < M, although the sealing ring is made of rubber and has certain elasticity, the sealing ring can be extruded, but the compression degree is limited, so that the length of the lower section does not exceed the groove in order to prevent the sealing ring from being crushed.
Compared with the prior art, the utility model has the beneficial effects that: this application is through designing into L type with the sealing washer, and the cross section of upper segment and hypomere is the O type, and the gap can not appear in the contact between by extrusion back and epitheca, inferior valve, therefore fluid can not spill, and the hypomere has blockked fluid to a certain extent, and the upper segment blocks once more, realizes dual seal's effect to the width of upper segment is greater than the thickness of inferior valve, makes sealed effect better like this.
Description of the drawings:
FIG. 1 is a cross-sectional view of a small gauge pressure gauge provided herein;
fig. 2 is an enlarged view of a in fig. 1.
The marks in the figure: 1-surface cover, 2-upper shell, 3-lower shell, 31-groove, 4-sealing ring, 41-upper segment and 42-lower segment.
Detailed Description
The present utility model will be described in detail with reference to the accompanying drawings.
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
In the description of the present utility model, unless otherwise specified and defined, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, mechanical or electrical, or may be in communication with each other between two elements, directly or indirectly through intermediaries, as would be understood by those skilled in the art, in view of the specific meaning of the terms described above.
As shown in fig. 1 and 2, the present application provides a seal ring 4 for a small caliber and a small caliber pressure gauge including an upper case 2, a lower case 3, a gauge cover 1 and a seal ring 4.
The sealing ring 4 comprises an upper section 41 and a lower section 42, the upper section 41 and the lower section 42 are integrally formed, and the cross section of the sealing ring 4 is L-shaped. The sealing ring 4 is made of hydrogenated nitrile rubber and can be used for a long time at a higher temperature.
The sealing washer 4 is located between upper casing 2 and lower casing 3, table cover 1 is located the outside of upper casing 2, table cover 1 with lower casing 3 is connected, the first face of upper segment 41 with table cover 1 contacts, and the both sides of first face are contacted with upper casing 2 and lower casing 3 respectively, and the both sides of lower segment 42 also are contacted with upper casing 2 and lower casing 3 respectively.
The watch case 1 is arranged outside the upper shell 2, the upper shell 2 is provided with an inward groove 31, the bottom of the watch case 1 is embedded into the groove 31, the watch case 1 is connected with the lower shell 3 in a rolling riveting mode, and the connection mode is convenient and firm.
After the watch case 1 is connected with the lower case 3, the first surface of the upper section 41 contacts with the inner wall of the watch case 1, the upper section 41 is compressed inwards under the extrusion of the watch case 1, the cross-sectional area is slightly increased, and in order to prevent external liquid from entering the pressure gauge, the width L of the upper section 41 is designed to be larger than the thickness D of the lower case 3, so that after the upper section 41 is extruded, part of the upper section is contacted with the outer wall of the lower case 3, and the liquid cannot flow in.
Because for the convenience of the connection between the lower shell 3 and the watch case 1, the lower shell 3 is provided with the groove 31, the distance between the groove 31 and the upper plane of the lower shell 3 is M, the length of the lower segment 42 is N, and although the sealing ring 4 is made of hydrogenated nitrile rubber, the sealing ring has certain elasticity, but the distance between the grooves 31 and the upper shell 2 is smaller, and in order to prevent the sealing ring 4 from being crushed, the N is designed to be smaller than M, which is equivalent to that the bottommost end of the lower segment 42 does not exceed the groove 31.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (6)
1. The sealing ring (4) is characterized by comprising an upper section (41) and a lower section (42), wherein the upper section (41) and the lower section (42) are integrally formed, and the cross section of the sealing ring (4) is L-shaped.
2. The sealing ring (4) according to claim 1, wherein the sealing ring (4) is made of hydrogenated nitrile rubber.
3. The utility model provides a small-bore manometer, its characterized in that, includes epitheca (2), inferior valve (3), table cover (1) and sealing washer (4), sealing washer (4) adopt claim 1 or 2 sealing washer (4) are located between epitheca (2) and inferior valve (3), table cover (1) are located the outside of epitheca (2), table cover (1) with inferior valve (3) are connected, the first face of upper segment (41) with table cover (1) contact.
4. A gauge according to claim 3, characterized in that the width L of the upper section (41) is greater than the thickness D of the lower casing (3).
5. A small caliber pressure gauge according to claim 3, characterized in that a groove (31) is arranged on the lower shell (3), the meter cover (1) is clamped into the groove (31), and the meter cover (1) is connected with the lower shell (3) in a roll riveting mode.
6. A small caliber pressure gauge according to claim 5, characterized in that the groove is at a distance M from the upper plane of the lower case (3), the length of the lower section (42) is N, N < M.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322125628.1U CN220581683U (en) | 2023-08-08 | 2023-08-08 | Sealing ring and small-caliber pressure gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322125628.1U CN220581683U (en) | 2023-08-08 | 2023-08-08 | Sealing ring and small-caliber pressure gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220581683U true CN220581683U (en) | 2024-03-12 |
Family
ID=90111745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322125628.1U Active CN220581683U (en) | 2023-08-08 | 2023-08-08 | Sealing ring and small-caliber pressure gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220581683U (en) |
-
2023
- 2023-08-08 CN CN202322125628.1U patent/CN220581683U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |