CN217502598U - Self-adaptive valve gasket structure for improving closing pressure precision of gas pressure regulator - Google Patents
Self-adaptive valve gasket structure for improving closing pressure precision of gas pressure regulator Download PDFInfo
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- CN217502598U CN217502598U CN202221629882.4U CN202221629882U CN217502598U CN 217502598 U CN217502598 U CN 217502598U CN 202221629882 U CN202221629882 U CN 202221629882U CN 217502598 U CN217502598 U CN 217502598U
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Abstract
The utility model relates to a self-adaptive valve pad structure for improving the closing pressure precision of a gas pressure regulator, which comprises a valve seat, a valve rod assembly and a valve pad; the valve rod assembly comprises a valve rod, a fastening screw penetrates through the center of the valve rod, the bottom of the fastening screw extends out of the valve rod and extends to the periphery to form a step part, the step part is attached and fastened with a boss at the bottom of the valve rod, and a longitudinal distance is formed between the step part on the outer side of the boss and the bottom of the valve rod; the valve pad is arranged below the valve rod and is limited in the longitudinal space through a protruding part; an axial floating gap is formed between the valve gasket and the valve rod, and a radial floating gap is formed between the boss and the boss; the contact surface of the valve pad and the valve seat is a sealing surface of the self-adaptive valve pad structure.
Description
Technical Field
The utility model relates to an improve self-adaptation valve pad structure of gas pressure regulator closing pressure precision belongs to medical instrument technical field.
Background
The gas pressure regulator is an important device in a gas transmission and distribution system, and the closing performance of the gas pressure regulator directly influences the gas utilization safety in the gas transmission and distribution system. In recent years, gas pipeline explosion accidents wake our gas safety alarm clock. At present, in a use occasion with lower pressure at the outlet of the pressure regulator, when the downstream uses no gas, the pressure regulator can not be safely closed, so that safety accidents are easily caused.
Disclosure of Invention
The utility model relates to a self-adaptation valve pad structure adopts O shape circle and mechanical stop gear to adjust the unsteady clearance of valve pad and eliminates or compensate because spare part processing and assembly error cause the non-parallelism between valve pad sealing face and the disk seat. When the gas pressure regulator is closed, the gap between the sealing surface of the valve gasket and the valve seat can be adjusted in a self-adaptive mode, and the sealing resistance between the valve gasket and the valve seat is reduced, so that the closing pressure precision is improved, and the industrial problem that the gas pressure regulation with high closing pressure precision is required under low outlet pressure is solved.
The utility model adopts the following technical proposal:
a self-adaptive valve gasket structure for improving the closing pressure precision of a gas pressure regulator comprises a valve seat 3, a valve rod assembly and a valve gasket 9; the valve rod assembly comprises a valve rod 7, a fastening screw 6 penetrates through the center of the valve rod 7, the bottom of the fastening screw 6 extends out of the valve rod 7 and extends to the periphery to form a step part, the step part is tightly attached to a boss 7.1 at the bottom of the valve rod 7, and a longitudinal distance is formed between the step part on the outer side of the boss 7.1 and the bottom of the valve rod 7; the valve gasket 9 is arranged below the valve rod 7 and is limited in the longitudinal distance through a boss 9.3; an axial floating gap 4 is arranged between the valve gasket 9 and the valve rod 7, and a radial floating gap 5 is arranged between the boss 9.3 and the boss 7.1; the contact surface of the valve pad 9 and the valve seat 3 is a sealing surface of the self-adaptive valve pad structure.
Preferably, a second O-shaped ring 8 is arranged between the valve gaskets 9 and the valve rods 7, and the effective thickness of the second O-shaped ring 8 is larger than the axial gap.
Further, a vulcanized rubber body 9.1 is arranged in the sealing surface between the valve pad 9 and the valve seat 3.
Further, still include gas pressure regulator valve body baffle 1, the groove sleeve of disk seat 3 links firmly with gas pressure regulator valve body baffle 1 through first O shape circle 2 for prevent that the gas from passing through 3 inflow exits of disk seat from the import.
Furthermore, the valve gasket 9 is provided with an inner flange 9.2, and the inner flange 9.2 is arranged on the inner side of the vulcanized rubber body 9.1.
The beneficial effects of the utility model reside in that:
1) the mechanical limit is realized, and the increase of the sealing resistance or the untight sealing caused by overlarge or overlong locking force is prevented;
2) the floating clearance can be used for eliminating or compensating for the processing and assembling errors of parts, so that the sealing resistance between the valve gasket and the valve seat is effectively reduced, and the closing pressure precision of the gas pressure regulator is improved;
3) the closing force required by the gas pressure regulator can be reduced, so that the service life of the valve pad of the quick-wear part is prolonged.
Drawings
Fig. 1 is a schematic view of a closed state of the adaptive valve pad structure of the present invention;
fig. 2 is a schematic view of the floating gap.
In the figure, 1, a valve body partition plate of a gas pressure regulator, 2, a first O-shaped ring, 3, a valve seat, 4, an axial floating gap, 5, a radial floating gap, 6, a fastening screw, 7, a valve rod, 7.1, a valve rod boss, 8, a second O-shaped ring, 9, a valve gasket, 9.1, a vulcanized rubber body, 9.2, an inner flange and 9.3, a boss are arranged.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1-2, an adaptive valve gasket structure for improving the closing pressure accuracy of a gas pressure regulator comprises a valve seat 3, a valve rod assembly and a valve gasket 9; the valve rod assembly comprises a valve rod 7, a fastening screw 6 penetrates through the center of the valve rod 7, the bottom of the fastening screw 6 extends out of the valve rod 7 and extends to the periphery to form a step part, the step part is tightly attached to a boss 7.1 at the bottom of the valve rod 7, and a longitudinal distance is formed between the step part on the outer side of the boss 7.1 and the bottom of the valve rod 7; the valve pad 9 is arranged below the valve rod 7 and limited in the longitudinal distance through a boss 9.3; an axial floating gap 4 is arranged between the valve gasket 9 and the valve rod 7, and a radial floating gap 5 is arranged between the boss 9.3 and the boss 7.1; the contact surface of the valve pad 9 and the valve seat 3 is a sealing surface of the self-adaptive valve pad structure.
In this embodiment, referring to fig. 1-2, a second O-ring 8 is provided between the valve stems 7 of the valve gasket 9, and the effective thickness of the second O-ring 8 is greater than the axial gap.
In this embodiment, see fig. 1-2, a vulcanized rubber body 9.1 is provided in the sealing surface between the valve pad 9 and the valve seat 3.
In this embodiment, referring to fig. 1, the gas regulator further includes a gas pressure regulator valve body partition plate 1, and the groove of the valve seat 3 is sleeved and fixedly connected with the gas pressure regulator valve body partition plate 1 through a first O-ring 2, so as to prevent gas from flowing into the outlet from the inlet through the valve seat 3.
In this embodiment, see fig. 1, the valve pad 9 is provided with an inner flange 9.2, said inner flange 9.2 being provided inside said vulcanized rubber body 9.1.
When the self-adaptive valve gasket structure is used, the valve gasket 9 is fixedly connected with the valve rod 7 through the locking screw 6, and the valve rod boss 7.1 plays a role in mechanical limiting of locking of the locking screw 6, so that the increase of sealing resistance or poor sealing caused by too large or too small compression of the O-shaped ring 28 is prevented; the axial floating gap 4 formed by the valve pad 9 and the valve rod 7 can realize that the valve pad 9 moves up and down, and the radial floating gap 5 can realize left and right floating, so that the valve pad 9 and the valve seat 3 are matched to form a certain floating swing angle.
When the gas pressure regulator is closed, the valve rod 7 drives the valve pad 9, the locking screw 6 moves downwards, the sealing plane of the vulcanized rubber body 9.1 of the valve pad 9 is contacted with the upper end of the valve seat 3, a certain floating swing angle is formed by matching the valve pad 9 and the valve seat 3, the valve pad 9 can self-adaptively find the position to be sealed with the valve seat 3, and the sealing can be realized without additionally overcoming the additional force of compressing the vulcanized rubber body 9.1 due to the processing and assembling errors of parts, so that the closing force of the gas pressure regulator is reduced, and the closing pressure precision is improved. In addition, because the closing force required by the self-adaptive valve gasket structure is reduced, the extrusion of the valve seat 3 on the vulcanized rubber body 9.1 of the valve gasket 9 can be reduced to a certain extent, and the service life of the valve gasket 9 of the quick-wear part is effectively prolonged.
The above are preferred embodiments of the present invention, and those skilled in the art can make various changes or improvements on the above embodiments without departing from the general concept of the present invention, and these changes or improvements should fall within the protection scope of the present invention.
Claims (5)
1. The utility model provides an improve self-adaptation valve gasket structure of gas pressure regulator closing pressure precision which characterized in that:
comprises a valve seat (3), a valve rod assembly and a valve gasket (9);
the valve rod assembly comprises a valve rod (7), a fastening screw (6) penetrates through the center of the valve rod (7), the bottom of the fastening screw (6) extends out of the valve rod (7) and extends to the periphery to form a step part, the step part is tightly attached to a boss (7.1) at the bottom of the valve rod (7), and a longitudinal distance is formed between the step part on the outer side of the boss (7.1) and the bottom of the valve rod (7);
the valve pad (9) is arranged below the valve rod (7) and is limited in the longitudinal distance through a boss (9.3) arranged on the valve pad;
an axial floating gap (4) is formed between the valve gasket (9) and the valve rod (7), and a radial floating gap (5) is formed between the boss (9.3) and the boss (7.1);
the contact surface of the valve pad (9) and the valve seat (3) is a sealing surface of the self-adaptive valve pad structure.
2. The adaptive valve gasket arrangement for improving closing pressure accuracy of a gas pressure regulator of claim 1, wherein: and a second O-shaped ring (8) is arranged between the valve gasket (9) and the valve rod (7), and the effective thickness of the second O-shaped ring (8) is greater than the axial gap.
3. The adaptive valve gasket arrangement for improving accuracy of closing pressure of a gas pressure regulator as recited in claim 2 wherein: and a vulcanized rubber body (9.1) is arranged in the sealing surface between the valve pad (9) and the valve seat (3).
4. The adaptive valve gasket arrangement for improving closing pressure accuracy of a gas pressure regulator of claim 2, wherein: still include gas pressure regulator valve body baffle (1), the groove sleeve of disk seat (3) links firmly through first O shape circle (2) and gas pressure regulator valve body baffle (1) for prevent that the gas from passing through disk seat (3) inflow outlet from the import.
5. The adaptive valve gasket arrangement for improving accuracy of closing pressure of a gas pressure regulator of claim 3, wherein: the valve pad (9) is provided with an inner flange (9.2), and the inner flange (9.2) is arranged on the inner side of the vulcanized rubber body (9.1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221629882.4U CN217502598U (en) | 2022-06-28 | 2022-06-28 | Self-adaptive valve gasket structure for improving closing pressure precision of gas pressure regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221629882.4U CN217502598U (en) | 2022-06-28 | 2022-06-28 | Self-adaptive valve gasket structure for improving closing pressure precision of gas pressure regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217502598U true CN217502598U (en) | 2022-09-27 |
Family
ID=83340178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221629882.4U Active CN217502598U (en) | 2022-06-28 | 2022-06-28 | Self-adaptive valve gasket structure for improving closing pressure precision of gas pressure regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217502598U (en) |
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2022
- 2022-06-28 CN CN202221629882.4U patent/CN217502598U/en active Active
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