CN203703345U - Gas stop valve with valve rod with double-sealing structure - Google Patents
Gas stop valve with valve rod with double-sealing structure Download PDFInfo
- Publication number
- CN203703345U CN203703345U CN201420078007.0U CN201420078007U CN203703345U CN 203703345 U CN203703345 U CN 203703345U CN 201420078007 U CN201420078007 U CN 201420078007U CN 203703345 U CN203703345 U CN 203703345U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- rod
- annular groove
- cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 19
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052802 copper Inorganic materials 0.000 claims abstract description 19
- 239000010949 copper Substances 0.000 claims abstract description 19
- 230000000694 effects Effects 0.000 description 10
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
Landscapes
- Details Of Valves (AREA)
Abstract
The utility model relates to a gas stop valve with a valve rod with a double-sealing structure. The gas stop valve solves the problem of sealing failure between the valve rod and a valve cover. A valve body (2) is fixedly connected with a lower valve cover (1) and an upper valve cover (3) to form a valve cavity. A valve seat (6) and a valve element (4) are matched on the valve body, the valve element (4) is connected with the valve rod (5), a spring is arranged between the upper valve cover (3) and the valve element (4), the upper section of a shaft hole of the valve cover (3) and the valve rod (5) form an annular groove, and a first O-shaped ring (9), a first copper sleeve (8), a second O-shaped ring (9) and a second copper sleeve (8) are sequentially arranged in the annular groove from bottom to top. The lower section of the shaft hole of the valve cover (3) is in movable fit with the valve rod (5), a shaft hole of a press screw (7) is in movable fit with the valve rod (5), the press screw (7) is in threaded connection with the upper section of the shaft hole of the valve cover (3), and the copper sleeve and the O-shaped sealing ring are fixed in the annular groove of the valve cover (3) through the press screw (7).
Description
technical field:
The utility model is relevant with cut-off valve, especially relevant with the exigent gas cut off valve of safety guarantee.
background technique:
At present, in existing gas cut off valve, Sealing belongs to easily damaged parts, between valve rod and valve gap, be only provided with one deck O RunddichtringO list sealing configuration, early stage, workman likely caused the dislocation of seal ring or housing screw to damage seal ring by pressure in assembly process, later stage enters sealing station in cut-off valve run duration foreign matter and corrosive liquids along valve rod, Rapid Damage Sealing; Add the inadaptable and aging of single sealing material, make seal failure, valve forms and leaks outside, the serious accident such as caused fire, blast.
model utility content:
The purpose of this utility model is to provide a kind of long service life, the gas cut off valve of the valve rod band double sealing structure of good sealing effect.
The utility model is achieved in that
Valve body 2 is connected with bottom flange 1 and bonnet 3, forms valve pocket, has valve seat 6 to coordinate with spool 4 on valve body, and spool 4 is connected with valve rod 5, in the time that spool 4 is fitted valve seat 6 under valve rod 5 effects, cuts off fed sheet of a media, when spool 4 is under valve rod 5 effects, while lifting off a seat, connect fed sheet of a media, between bonnet 3 and spool 4, there is spring, the epimere of the axis hole of valve gap 3 and valve rod 5 form annular groove, annular groove has an O RunddichtringO 9 from top to bottom, the first copper sheathing 8, the 2nd O RunddichtringO 9, the second copper sheathing 8, the hypomere of the axis hole of valve gap 3 coordinates with valve rod 5 is moving, the axis hole of housing screw 7 coordinates with valve rod 5 is moving, housing screw 7 is threaded with the epimere of the axis hole of valve gap 3, copper sheathing 8 and O RunddichtringO 9 are fixed on by housing screw 7 in the annular groove of valve gap 3, housing screw 7 to copper sheathing 8 and the O RunddichtringO 9 regulating seal property energy that pressurizes.
The utility model has the following advantages:
One. valve rod sealing member is the combination of copper sheathing 8 and O RunddichtringO 9, and friction torque is little, cooperation is tight, and valve rod can not be worn, long service life.
Two. double-sealing device, sealing effect is three to five times of conventional seals effect, guarantees Security, the reliability of cut-off valve.
Between three .O RunddichtringOs 9, adopt the copper sheathing 8 that plasticity is good to compress, effectively control sealability by housing screw 7, strengthened sealing effect and do not damage O RunddichtringO 9.
Four. simple in structure, common laborer also can complete high quality, high efficiency assembling, guarantees that gas cut off valve is safe and reliable.
accompanying drawing explanation:
Fig. 1 is structural drawing of the present utility model.
Fig. 2 is the partial enlarged drawing of Fig. 1.
embodiment:
Valve body 2 is connected with bottom flange 1 and bonnet 3, forms valve pocket, has valve seat 6 to coordinate with spool 4 on valve body, and spool 4 is connected with valve rod 5, in the time that spool 4 is fitted valve seat 6 under valve rod 5 effects, cuts off fed sheet of a media, when spool 4 is under valve rod 5 effects, while lifting off a seat, connect fed sheet of a media, between bonnet 3 and spool 4, there is spring, the epimere of the axis hole of valve gap 3 and valve rod 5 form annular groove, annular groove has an O RunddichtringO 9 from top to bottom, the first copper sheathing 8, the 2nd O RunddichtringO 9, the second copper sheathing 8, the hypomere of the axis hole of valve gap 3 coordinates with valve rod 5 is moving, the axis hole of housing screw 7 coordinates with valve rod 5 is moving, housing screw 7 is threaded with the epimere of the axis hole of valve gap 3, copper sheathing 8 and O RunddichtringO 9 are fixed on by housing screw 7 in the annular groove of valve gap 3, housing screw 7 to copper sheathing 8 and the O RunddichtringO 9 regulating seal property energy that pressurizes.
Gas cut off valve, in the time being caused that by fault or other reasons gas downstream pressure raises or reduces, moves down by valve rod 5, makes spool 4 and valve seat 6 rapid closings, blocks air-flow.Valve rod 5 belongs to moving element; by valve gap 3 and copper sheathing 8 axial restraint valve rods 5; coordinate by copper sheathing 8 and O RunddichtringO 9; outside compresses with housing screw 7, regulates the sealing effect of housing screw 7 enhancings and valve rod 5, in the time that valve rod 5 moves up and down; copper sheathing 8 closely cooperates with valve rod 5; stopped that foreign matter and corrosive liquids enter sealing station, played certain protective action, two O RunddichtringOs 9 are at the macrocyclic stable sealing effect that shows in service.
Claims (1)
1. the gas cut off valve of valve rod band double sealing structure, it is characterized in that valve body (2) and bottom flange (1) and bonnet (3) are connected, form valve pocket, on valve body, there is valve seat (6) to coordinate with spool (4), spool (4) is connected with valve rod (5), between bonnet (3) and spool (4), there is spring, the epimere of the axis hole of valve gap (3) and valve rod (5) form annular groove, annular groove has an O type circle (9) from top to bottom, the first copper sheathing (8), the 2nd O type circle (9), the second copper sheathing (8), the hypomere of the axis hole of valve gap (3) coordinates with valve rod (5) is moving, the axis hole of housing screw (7) coordinates with valve rod (5) is moving, housing screw (7) is threaded with the epimere of the axis hole of valve gap (3), copper sheathing (8) and O RunddichtringO (9) are fixed in the annular groove of valve gap (3) by housing screw (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420078007.0U CN203703345U (en) | 2014-02-24 | 2014-02-24 | Gas stop valve with valve rod with double-sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420078007.0U CN203703345U (en) | 2014-02-24 | 2014-02-24 | Gas stop valve with valve rod with double-sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203703345U true CN203703345U (en) | 2014-07-09 |
Family
ID=51053790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420078007.0U Expired - Lifetime CN203703345U (en) | 2014-02-24 | 2014-02-24 | Gas stop valve with valve rod with double-sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203703345U (en) |
-
2014
- 2014-02-24 CN CN201420078007.0U patent/CN203703345U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHENGDU CHUANLI INTELLIGENT FLUID EQUIPMENT CO., L Free format text: FORMER NAME: CHENGDU CHUANLI INTELLIGENT LIQUID CONTROL EQUIPMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 611530, No. seven, enterprise road, Qionglai Industrial Development Zone, Chengdu, Sichuan Patentee after: CHENGDU CHUANLI SMART FLUID EQUIPMENT CO.,LTD. Address before: 611530, No. seven, enterprise road, Qionglai Industrial Development Zone, Chengdu, Sichuan Patentee before: CHENGDU CHUANLI INTELLIGENT FLUID CONTROL EQUIPMENT Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140709 |
|
| CX01 | Expiry of patent term |