CN211649075U - Quick cut-off valve for gas - Google Patents
Quick cut-off valve for gas Download PDFInfo
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- CN211649075U CN211649075U CN201922476500.3U CN201922476500U CN211649075U CN 211649075 U CN211649075 U CN 211649075U CN 201922476500 U CN201922476500 U CN 201922476500U CN 211649075 U CN211649075 U CN 211649075U
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- valve
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- connecting rod
- valve body
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Abstract
Quick trip valve of gas, comprising a valve body, coaxial airtight connection has upper valve gap, lower valve gap on the valve body, be equipped with piston rod in the valve body, piston rod's top sliding connection has the piston, and sealed sliding connection is connected between piston and the upper valve gap, piston rod lower extreme an organic whole is equipped with the case, the piston through spring coupling between the case, the case coats on and is equipped with the gasket, be equipped with the disk seat on the medium via hole in the valve body, on the disk seat, the downside all is equipped with the edge of a knife, go up the gasket with the edge of a knife of disk seat meets, be equipped with guide bar, circular mounting groove on the lower valve gap, be equipped with the through-hole in the mounting groove, interior hexagon bolt wears to establish through-hole and adjusting rod fixed connection, adjusting rod lower part with the mounting groove adaptation, the utility model discloses.
Description
Technical Field
The utility model relates to a trip valve structure especially relates to quick trip valve of gas.
Background
The traditional cut-off valve has very bad and complex working condition and environment, for example, the gas for the industrial furnace contains a plurality of impurities, a plurality of small solid particles and a plurality of tar components, and the phenomena of poor sealing, valve blockage, gas leakage and the like can occur within 2 months of the on-line use of the general valve, thereby easily causing serious potential safety accidents.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a quick cut-off valve for fuel gas, which comprises a valve body, an upper valve cover and a lower valve cover are coaxially and hermetically connected to the valve body, a piston connecting rod is arranged in the valve body, a piston is slidably connected to the top of the piston connecting rod, the piston and the upper valve cover are connected in a sealing manner, a valve core is integrally arranged at the lower end of the piston connecting rod, the piston and the valve core are connected by a spring, an upper sealing sheet is covered on the valve core, a valve seat is arranged on a medium via hole in the valve body, a knife edge is arranged on both the upper side and the lower side of the valve seat, the upper sealing sheet is connected with the knife edge of the valve seat, a guide rod and a circular mounting groove are arranged on the lower valve cover, a through hole is arranged in the mounting groove, an inner hexagon bolt is arranged in the through hole, and a sealing ring is arranged in the sealing groove, a lower sealing piece is screwed on the upper part of the adjusting connecting rod, and the lower sealing piece is in sliding connection with the guide rod.
And the upper sealing sheet, the lower sealing sheet and the sealing ring are all made of FPM materials.
The upper sealing sheet comprises a bottom plate and a peripheral wall, and the sizes of the bottom plate and the peripheral wall are matched with those of the valve core.
And sealing rings are arranged between the upper valve cover, the lower valve cover and the valve body.
The guide rod is cylindrical.
The upper end of the guide rod extends into the valve seat.
The adjusting connecting rod is characterized in that a limiting block is arranged in the middle of the adjusting connecting rod, the limiting block and the adjusting connecting rod are integrated, and the lower side of the limiting block is connected with the upper surface of the lower mounting groove.
Compared with the prior art, the utility model discloses following beneficial effect has:
the valve is characterized in that the valve cores are connected through a spring, the valve cores are covered with upper sealing pieces, valve seats are arranged on medium via holes in the valve bodies, knife edges are arranged on the upper side and the lower side of each valve seat, the valve seats are designed into knife edge type sealing structures, the sealing mode of the valve cores is designed into soft sealing, and compared with the traditional plane sealing structure and the traditional hard sealing mode, the structure solves the problem of untight sealing of the valve, small solid particles and tar can directly flow out along the knife edges when the valve is closed, the sealing surface is kept away, zero leakage of the valve is guaranteed by 100%, and the major potential safety hazard of explosion caused by gas leakage is thoroughly.
Drawings
Fig. 1 is an overall structure diagram of the present invention.
The figure is as follows: the valve comprises a piston 1, a piston connecting rod 2, a spring 3, an upper valve cover 4, a valve core 5, an upper sealing sheet 6, a valve seat 7, a lower sealing sheet 8, a limiting block 9, a hexagon socket head cap screw 10, an adjusting connecting rod 11, a guide rod 12, a lower valve cover 13 and a valve body 14.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
As shown in fig. 1, the quick fuel gas cut-off valve comprises a valve body 14, wherein an upper valve cover 4 and a lower valve cover 13 are coaxially and hermetically connected to the valve body 14, a seal ring is arranged between the upper valve cover 4 and the valve body 14, a piston connecting rod 2 is arranged in the valve body 14, a piston 1 is slidably connected to the top of the piston connecting rod 2, the piston 1 and the upper valve cover 4 are connected in a sealing and sliding manner, a valve core 5 is integrally arranged at the lower end of the piston connecting rod 2, the piston 1 and the valve core 5 are connected through a spring 3, an upper sealing sheet 6 is covered on the valve core 5, the upper sealing sheet 6, a lower sealing sheet 8 and the seal ring are all made of FPM materials, the upper sealing sheet 6 comprises a bottom plate and a peripheral wall, and the sizes;
a valve seat 7 is arranged on a medium via hole in the valve body 14, the upper side and the lower side of the valve seat 7 are both provided with a knife edge, the upper sealing sheet 6 is connected with the knife edge of the valve seat 7, the lower valve cover 13 is provided with a guide rod 12 and a circular mounting groove, the guide rod 12 is cylindrical, the upper end of the guide rod 12 extends into the valve seat 7, a through hole is arranged in the mounting groove, a hexagon socket head cap screw 10 penetrates through the through hole and is fixedly connected with an adjusting connecting rod 11, the middle part of the adjusting connecting rod 11 is provided with a limiting block 9, the limiting block 9 and the adjusting connecting rod 11 are integrated, the lower side of the limiting block 9 is connected with the upper surface of the lower mounting groove, the lower part of the adjusting connecting rod 11 is adapted to the mounting groove, a sealing groove is arranged on the connecting surface of the adjusting connecting rod 11 and, the lower sealing sheet 8 is in sliding connection with the guide rod 12;
the valve core 5 is connected through the spring 3, the upper sealing sheet 6 is covered on the valve core 5, the valve seat 7 is arranged on the medium via hole in the valve body 14, the upper side and the lower side of the valve seat 7 are both provided with knife edges, the valve seat 7 is designed into a knife edge type sealing structure, the sealing mode of the valve core 5 is designed into soft sealing, compared with the traditional plane sealing structure and the hard sealing mode, the structure solves the problem that the valve is not tight in sealing, solid particles and tar can directly flow out along the knife edge when the valve is closed, the sealing surface is kept away from, the zero leakage of the valve is guaranteed by 100%, and the major potential safety hazard of explosion caused by gas leakage is thoroughly solved.
The above-mentioned embodiments are only preferred embodiments of the present invention, and the scope of the right of the present invention should not be limited thereby, and therefore, modifications, equivalent changes, improvements, etc. made in the claims of the present invention are still included in the scope of the present invention.
Claims (7)
1. Quick trip valve of gas, including the valve body, its characterized in that: the upper valve cover and the lower valve cover are coaxially and hermetically connected to the valve body, a piston connecting rod is arranged in the valve body, a piston is connected to the top of the piston connecting rod in a sliding manner, the piston and the upper valve cover are connected in a sealing and sliding manner, a valve core is integrally arranged at the lower end of the piston connecting rod, the piston and the valve core are connected through a spring, an upper sealing sheet is covered on the valve core, a valve seat is arranged on a medium via hole in the valve body, knife edges are arranged on the upper side and the lower side of the valve seat respectively, the upper sealing sheet is connected with the knife edge of the valve seat, a guide rod and a circular mounting groove are arranged on the lower valve cover, a through hole is formed in the mounting groove, an inner hexagon bolt penetrates through the through hole and is fixedly connected with an adjusting connecting rod, the lower portion of the adjusting connecting rod is matched with, the lower sealing sheet is in sliding connection with the guide rod.
2. The quick gas shut-off valve according to claim 1, characterized in that: and the upper sealing sheet, the lower sealing sheet and the sealing ring are all made of FPM materials.
3. The quick gas shut-off valve according to claim 1, characterized in that: the upper sealing sheet comprises a bottom plate and a peripheral wall, and the sizes of the bottom plate and the peripheral wall are matched with those of the valve core.
4. The quick gas shut-off valve according to claim 1, characterized in that: and sealing rings are arranged between the upper valve cover, the lower valve cover and the valve body.
5. The quick gas shut-off valve according to claim 1, characterized in that: the guide rod is cylindrical.
6. The quick gas shut-off valve according to claim 1, characterized in that: the upper end of the guide rod extends into the valve seat.
7. The quick gas shut-off valve according to claim 1, characterized in that: the adjusting connecting rod is characterized in that a limiting block is arranged in the middle of the adjusting connecting rod, the limiting block and the adjusting connecting rod are integrated, and the lower side of the limiting block is connected with the upper surface of the lower mounting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922476500.3U CN211649075U (en) | 2019-12-31 | 2019-12-31 | Quick cut-off valve for gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922476500.3U CN211649075U (en) | 2019-12-31 | 2019-12-31 | Quick cut-off valve for gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211649075U true CN211649075U (en) | 2020-10-09 |
Family
ID=72702180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922476500.3U Active CN211649075U (en) | 2019-12-31 | 2019-12-31 | Quick cut-off valve for gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211649075U (en) |
-
2019
- 2019-12-31 CN CN201922476500.3U patent/CN211649075U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |