CN205155165U - Self -sealing pressure stop valve - Google Patents
Self -sealing pressure stop valve Download PDFInfo
- Publication number
- CN205155165U CN205155165U CN201521008995.2U CN201521008995U CN205155165U CN 205155165 U CN205155165 U CN 205155165U CN 201521008995 U CN201521008995 U CN 201521008995U CN 205155165 U CN205155165 U CN 205155165U
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- valve
- valve rod
- flap
- rod
- valve body
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Abstract
The utility model relates to a self -sealing pressure stop valve, including valve body, disk seat, valve clack, valve rod, valve gap, support, transmission, adopt the collar to be connected between valve rod lower extreme and the valve clack, the valve rod upper end is connected with transmission, the enterprising lower structure of valve body adoption, constitute the relief valve under the valve rod between terminal surface and the valve clack back, the round conical sealing surface of port mutually supports and constitutes on the pressure release hole that make at the round conical sealing surface of this relief valve terminal surface under by the valve rod and valve clack center, has axle clearance between the lower anchor ring of collar and the installation convex shoulder of valve rod lower extreme, and valve clack back system has the pressure leading -out hole who feeds through valve rod mounting hole and inlet channel of the valve body. At first promote the valve rod and open the relief valve when valve open, release valve body import medium through pressure leading -out hole, relief valve, drive the valve clack promotion by the valve rod again and open, valve open moment is little. Be applicable to high -pressure medium operating modes such as oil, chemical industry, electric power.
Description
Technical field
The utility model belongs to valve field, particularly about a kind of stop valve.The utility model is applicable to the high-pressure medium operating modes such as oil, chemical industry, electric power.
Background technique
Stop valve is widely used in the medium transport pipeline of the industries such as oil, chemical industry, electric power, generally be made up of valve body, valve seat, flap, valve rod, valve gap, transmission device etc., valve seat is fixedly mounted on valve body and imports and exports between passage, valve rod lower end is connected with flap lower end, and valve rod upper end is connected with transmission device.In order to reduce moment during valve closing, valve body generally adopts upper entering and lower leaving structure, and namely valve body inlet passage is positioned on the upside of valve seat, and outlet passage is positioned on the downside of valve seat.When its major defect is flap unlatching, inlet passage pressure medium acts on the flap back side, makes valve opening moment larger.
Summary of the invention
The purpose of this utility model is the shortcoming existed for prior art, provides a kind of and opens and closes all very little pressure self-sealing stop valve of moment.
The technical solution of the utility model comprises valve body, valve seat, flap, valve rod, valve gap, support, transmission device, valve seat is fixedly mounted on valve body and imports and exports between passage, there is between flap lower end surface and valve seat the cemented carbide conical seal (contact) face cooperatively interacted, valve rod lower end is connected with adopting installing ring between flap, valve rod upper end is connected with transmission device, and valve body adopts upper entering and lower leaving structure; Mainly form Decompression valves between valve rod lower end surface and the flap back side, this Decompression valves is cooperatively interacted by the conical sealing face of the made relief hole upper end-hole of the conical sealing face of valve rod lower end surface and flap center and forms, have axial clearance between the lower anchor ring of installing ring and the installation convex shoulder of valve rod lower end, the flap back side is shaped with the tracting pressuring hole being communicated with valve rod mounting hole and valve body inlet passage.
Preferably, support is shaped with opening indicator window mouth, the valve rod inside opening indicator window mouth fixedly mounts aperture indicator collet, this aperture indicator collet moves cooperation and is flush-mounted in opening indicator window mouth, forms valve rod anti-rotation guiding device.
The utility model has the advantages that and arrange Decompression valves between valve rod and flap, when valve opening, first poppet stem opens Decompression valves, and by valve body import medium by tracting pressuring hole, relieves, then drive flap to promote by valve rod to open, valve opening moment is little.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
1 valve body, 2 valve seats, 3 relief holes, 4 flaps, 5 tracting pressuring holes, 6 installing rings, 7 valve rods, 8 valve gaps, 9 supports, 10 transmission devices, 11 opening indicator window mouths, 12 aperture indicator collets.
Embodiment
Pressure self-sealing stop valve as shown in Figure 1, comprise valve body 1, valve seat 2, flap 4, valve rod 7, valve gap 8, support 9, transmission device 10, valve seat 2 is fixedly mounted on valve body 1 and imports and exports between passage, its sealing surface weld deposit Hardmetal materials, improve wear-resisting, corrosion resistant performance, flap 4 lower end surface has the cemented carbide conical seal (contact) face cooperatively interacted with valve seat 2, valve rod 7 lower end is connected with adopting installing ring 6 between flap 4, this installing ring 6 adopts outside thread and flap 4 back side valve rod mounting hole internal thread to cooperatively interact, the installation convex shoulder of the lower anchor ring of installing ring 6 and valve rod 7 lower end is utilized to be connected on valve rod 7 by flap 4, valve rod 7 upper end is connected with transmission device 10, valve body 1 adopts upper entering and lower leaving structure, namely medium brings out from valve seat 2 upper end is entered, Decompression valves is formed between valve rod 7 lower end surface and flap 4 back side, this Decompression valves is cooperatively interacted by the conical sealing face of made relief hole 3 upper end-hole of the conical sealing face of valve rod 7 lower end surface and flap 4 center and forms, relief hole 3 is concentric with valve rod 7, be communicated with valve rod mounting hole and flap 4 lower end surface, between the lower anchor ring of installing ring 6 and the installation convex shoulder of valve rod 7 lower end, there is axial clearance, valve rod 7 can be moved axially at valve rod mounting hole, and flap 4 back side is shaped with the tracting pressuring hole 5 being communicated with valve rod mounting hole and valve body 1 inlet passage.
Support 9 is shaped with opening indicator window mouth 11, the valve rod 7 inside opening indicator window mouth 11 fixedly mounts aperture indicator collet 12, this aperture indicator collet 12 moves cooperation and is flush-mounted in opening indicator window mouth 11, forms valve rod anti-rotation guiding device.
Adopt pressure self-sealing structure between valve gap 8 and valve body 1, be arranged on the self-tightening sealing ring between valve gap 8 and valve body 1 by the wedging of pressure medium promotion valve gap 8, realize pressure energized seal, its concrete structure is known technology, is not described in detail at this.
Claims (2)
1. a pressure self-sealing stop valve, comprise valve body (1), valve seat (2), flap (4), valve rod (7), valve gap (8), support (9), transmission device (10), valve seat (2) is fixedly mounted on valve body (1) and imports and exports between passage, flap (4) lower end surface has the cemented carbide conical seal (contact) face cooperatively interacted with valve seat (2), installing ring (6) is adopted to be connected between valve rod (7) lower end with flap (4), valve rod (7) upper end is connected with transmission device (10), valve body (1) adopts upper entering and lower leaving structure, it is characterized in that forming Decompression valves between valve rod (7) lower end surface and flap (4) back side, this Decompression valves is cooperatively interacted by the conical sealing face of made relief hole (3) upper end-hole of the conical sealing face of valve rod (7) lower end surface and flap (4) center and forms, have axial clearance between the lower anchor ring of installing ring (6) and the installation convex shoulder of valve rod (7) lower end, flap (4) back side is shaped with the tracting pressuring hole (5) being communicated with valve rod mounting hole and valve body (1) inlet passage.
2. pressure self-sealing stop valve according to claim 1, it is characterized in that support (9) is shaped with opening indicator window mouth (11), at the valve rod (7) upper fixed installation aperture indicator collet (12) of opening indicator window mouth (11) inner side, the dynamic cooperation of this aperture indicator collet (12) is flush-mounted in opening indicator window mouth (11), forms valve rod anti-rotation guiding device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521008995.2U CN205155165U (en) | 2015-12-03 | 2015-12-03 | Self -sealing pressure stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521008995.2U CN205155165U (en) | 2015-12-03 | 2015-12-03 | Self -sealing pressure stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205155165U true CN205155165U (en) | 2016-04-13 |
Family
ID=55690859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521008995.2U Active CN205155165U (en) | 2015-12-03 | 2015-12-03 | Self -sealing pressure stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205155165U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869857A (en) * | 2018-07-31 | 2018-11-23 | 凯斯通阀门有限公司 | From pressure seal shut-off valve |
| CN108869856A (en) * | 2018-07-31 | 2018-11-23 | 凯斯通阀门有限公司 | From pressure seal steel valve |
-
2015
- 2015-12-03 CN CN201521008995.2U patent/CN205155165U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869857A (en) * | 2018-07-31 | 2018-11-23 | 凯斯通阀门有限公司 | From pressure seal shut-off valve |
| CN108869856A (en) * | 2018-07-31 | 2018-11-23 | 凯斯通阀门有限公司 | From pressure seal steel valve |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |