CN2856694Y - Anti-explosion connector with controllable switch relief valve - Google Patents
Anti-explosion connector with controllable switch relief valve Download PDFInfo
- Publication number
- CN2856694Y CN2856694Y CN 200520046230 CN200520046230U CN2856694Y CN 2856694 Y CN2856694 Y CN 2856694Y CN 200520046230 CN200520046230 CN 200520046230 CN 200520046230 U CN200520046230 U CN 200520046230U CN 2856694 Y CN2856694 Y CN 2856694Y
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- Prior art keywords
- valve
- explosion
- valve body
- spring
- pressure release
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- Expired - Fee Related
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Abstract
The utility model discloses an anti-explosion connection device with control switch press reducing valve, including a valve body, a first valve core mounted in intake hole of valve body, a first spring, and a first valve seat and unidirectional valve of sealing ring, on the connection device an anti-explosion air-leakage device is provided on the middle part of valve body perpendicular to its axial, including a pressure relief casing extended from the peripheral of valve body, and the bottom of which is equipped with a small pressure relief hole; a valve disk cage, the bottom of which is covered with anti-explosion film and sealed on the small pressure relief hole; a pressure relief cover, the top of which is equipped with several small holes for airflow leakage; an anti-explosion spring mounted between the valve disc and pressure relief cover. The connection device is capable of leaking gas through anti-explosion air-leakage device when the air in the steel cylinder is overpressure, so as to eliminating the impact to pressure relief valve from ultra-pressure, and a linkage gas valve is provided after valve body, thereby increasing sealed defense line of the device.
Description
Technical field
The utility model relates to a kind of connection set, is specifically related to a kind ofly connect gas cylinder and have explosion-proof connection set between the control switch reduction valve.
Background technique
At present, general oxygen bottle and the connection set that has between the control switch reduction valve are unidirectional gas valve.Used unidirectional gas valve on the reduction valve that utility model patent ZL200420021647.4 provides, one valve seat, a spring and a spool are installed in this unidirectional gas valve inlet hole, valve body periphery top is provided with chimb, and the middle part is a hexagon nut, and the bottom has connecting thread.This unidirectional gas valve cuts off by the connected sum of the control of the rotary switch on reduction valve gas circuit, and its effect is more single, when gas cylinder pressure is extraordinary, can not play explosion-proof, just exists potential safety hazard when using cyclinder gas.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of explosion-proof connection set that has the control switch reduction valve is provided, and this device can lose heart when gas cylinder pressure is extraordinary and play explosion-proof decompression.
Realize that the above-mentioned purpose technological scheme is: one has the explosion-proof connection set of control switch reduction valve, contain valve body, be installed in the unidirectional gas valve of first spool, first spring and first valve seat and seal ring in the valve body inlet hole, also be provided with on the described connection set one be installed in valve body the middle part and with the perpendicular explosion-proof air releasing device of its axis, it comprises:
One pressure release cover, it is that periphery from valve body extends out, and interior all rear portions of this cover are provided with screw thread, and its bottom is provided with a pressure release aperture, and this pressure release aperture is positioned at behind first valve seat and with the inner chamber of valve body and partly is communicated with;
One valve disc, this valve disc are sleeve shape, and its bottom surface covers rupture pressure disc and envelope is pressed on the described pressure release aperture;
One pressure release lid, its top is provided with the aperture that some air feed streams leak, and is provided with the screw thread of fixedlying connected with pressure release cover rear portion its outside week;
One explosion-proof spring is installed between described valve disc and the pressure release lid.
The above-mentioned explosion-proof connection set that has the control switch reduction valve wherein, also is provided with an interlock gas valve in the valve body back, and it comprises:
One second valve seat, comprise one install head and one with the valve pocket that head fuses is installed, described second valve seat is fixed in the inlet hole of valve body by installation;
One second spool has a head that can combine with first valve base sealing and is positioned at bar portion behind the head, and described bar portion is installed in the valve pocket of second valve seat movably;
One second spring is installed in second valve seat and between second spool and second valve seat bottom.
The above-mentioned explosion-proof connection set that has the control switch reduction valve, wherein, the inboard center of described pressure release tops is provided with a circular tongue and lays of explosion-proof spring in order to fixing mode.
The above-mentioned explosion-proof connection set that has the control switch reduction valve, wherein, the steel wire diameter of described explosion-proof spring is greater than the steel wire diameter of first spring and second spring.
The above-mentioned explosion-proof connection set that has the control switch reduction valve, wherein, described first valve seat is provided with first seal ring.
The utility model is by gas cylinder and have explosion-proof connection set between the control switch reduction valve, can play the effect of losing heart by explosion-proof air releasing device during the gas superpressure of this connection set in gas cylinder, to stop the impact of supernormal pressure, reduce the spoilage of reduction valve to reduction valve; By the interlock gas valve that is provided with later at valve body, increased the sealing defence line of this device, this apparatus structure is reasonable, is easy to realize.
Description of drawings
Fig. 1 is a stereogram of the present utility model;
Fig. 2 is a three-dimensional exploded view of the present utility model.
Embodiment
See also Fig. 1 and Fig. 2, the explosion-proof connection set that has the control switch reduction valve of the present utility model, contain valve body 1, be installed in the unidirectional gas valve of first spool 33, first spring 34, first valve seat 35 and seal ring 2 in valve body 1 inlet hole, wherein first valve seat, 35 peripheries be with in first seal ring 351 and the screw thread that is provided with 353 by periphery and valve body 1 inlet hole be threaded fixing; Also be provided with on the described connection set one be installed in valve body 1 the middle part and with the perpendicular explosion-proof air releasing device of its axis.
Explosion-proof air releasing device comprises: pressure release cover 4, one valve disc 42, one pressure release lid 44, one explosion-proof spring 43, wherein pressure release cover 4 is cylindrical shapes that periphery middle part hexagon nut 12 vertical extent from valve body 1 come out, and interior all rear portions of this cover are provided with screw thread 41, and its bottom is the side of hexagon nut 12, have a pressure release aperture 14 on this side, this pressure release aperture 14 is positioned at behind first valve seat and with the inner chamber of valve body 1 and partly is communicated with.
The top of pressure release lid 44 is provided with the aperture 45 that some air feed streams leak, promptly offer a small sircle hole in top center, be laid with three waist shaped holes at distance top center to the middle part at edge, be provided with in the outside week of this lid with pressure release and overlap the screw thread 46 of fixedlying connected at 4 rear portions, the inboard center of pressure release tops is provided with a circular tongue and is placed in of explosion-proof spring in order to fixing mode, so that explosion-proof spring 43 is stably worked.
Explosion-proof spring 43 is a coil spring, and its steel wire diameter is greater than the steel wire diameter of first spring and second spring, and it is installed between described valve disc 42 and the pressure release lid 44.
Also be provided with an interlock gas valve in the valve body back, it comprises: one second valve seat 38, one second spool 37, one second spring 36, second valve seat 38 wherein, comprise a columnar installation 382 and one and 382 valve pocket that fuse 381 is installed, these valve pocket 381 peripheries are provided with plurality of strengthening ribs to support its intensity and to connect the installation 382 be shorter than it, the material of second valve seat 38 is a polypropylene in the present embodiment, it be by the plasticity of material from the inlet hole of valve body 1 is into risen by in the inlet hole underpart of valve body 1 by installation 382.
Bar portion 373 its heads after second spool 37 has a head 372 that can combine with 35 sealings of first valve seat and is positioned at head 372 are with seal ring 371, the internal diameter of described valve pocket 381 for cylindrical bar portion's 373 diameters and second valve seat 38 is convenient to it and is moved up and down at this valve pocket for being slidingly matched.
When using the utility model, screw thread 13 with the connection set bottom connects gas cylinder, first spool 33 in valve body 1 inlet hole has been sealed the suction port of valve body, and second spool 37 is owing to be subjected to the power of second spring 36 also to seal the suction port 352 of first valve seat 35, the two seals mouth is arranged in the inlet hole of connection set, strengthened connection set and closed reliability; Pressure in gas cylinder just often, the valve disc 42 in the air releasing device is subjected to explosion-proof spring 43 pressure also to seal pressure release aperture 14, connection set is a closed condition; Gas pressure in steel cylinder is too high and be enough to overcome the pressure of explosion-proof spring 43, valve disc 42 is backed down by the gas pressure greater than explosion-proof spring 43, gas is gushed out and is released by the some apertures 45 on the pressure release lid 44 from pressure release aperture 14, make gas obtain decompression, when through the post-decompression gas pressure that loses heart during less than the pressure of explosion-proof spring 43, valve disc 42 is returned by the pressure of explosion-proof spring 43 again and seals pressure release aperture 14, and connection set is closed again.
Control switch and connection set snapping by reduction valve are lived, then connection set is opened by the control switch on the reduction valve, first spool 33 is also moved down by the pressure that moves down of push rod in the reduction valve, opened the suction port of valve body, and second spool 37 is pressed down the suction port 352 of having opened first valve seat 35 by first spool 33, so far opened the gas circuit of gas from the gas cylinder to the reduction valve, the gas in the steel cylinder has entered reduction valve through the connection set inlet hole.
Gas pressure in gas cylinder substantially exceeds normal pressure, and the explosion-proof air releasing device on the connection set is played a role once more, thereby stops the impact of supernormal pressure to reduction valve.
If will close gas and throw off connection set, then control by the control switch on the reduction valve.
Claims (5)
1. explosion-proof connection set that has the control switch reduction valve, contain valve body, be installed in the unidirectional gas valve of first spool, first spring and first valve seat and seal ring in the valve body inlet hole, it is characterized in that, also be provided with on the described connection set one be installed in valve body the middle part and with the perpendicular explosion-proof air releasing device of its axis, it comprises:
One pressure release cover, it is that periphery from valve body extends out, and interior all rear portions of this cover are provided with screw thread, and its bottom is provided with a pressure release aperture, and this pressure release aperture is positioned at behind first valve seat and with the inner chamber of valve body and partly is communicated with;
One valve disc, this valve disc are sleeve shape, and its bottom surface covers rupture pressure disc and envelope is pressed on the described pressure release aperture;
One pressure release lid, its top is provided with the aperture that some air feed streams leak, and is provided with the screw thread of fixedlying connected with pressure release cover rear portion its outside week;
One explosion-proof spring is installed between described valve disc and the pressure release lid.
2. the explosion-proof connection set that has the control switch reduction valve according to claim 1 is characterized in that, also is provided with an interlock gas valve in the valve body back, and it comprises:
One second valve seat, comprise one install head and one with the valve pocket that head fuses is installed, described second valve seat is fixed in the inlet hole of valve body by installation;
One second spool has a head that can combine with first valve base sealing and is positioned at bar portion behind the head, and described bar portion is installed in the valve pocket of second valve seat movably;
One second spring is installed in second valve seat and between second spool and second valve seat bottom.
3. the explosion-proof connection set that has the control switch reduction valve according to claim 1 is characterized in that, the inboard center of described pressure release tops is provided with a circular tongue and lays of explosion-proof spring in order to fixing mode.
4. the explosion-proof connection set that has the control switch reduction valve according to claim 1 and 2 is characterized in that the steel wire diameter of described explosion-proof spring is greater than the steel wire diameter of first spring and second spring.
5, the explosion-proof connection set that has the control switch reduction valve according to claim 2 is characterized in that, described first valve seat is provided with first seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520046230 CN2856694Y (en) | 2005-11-03 | 2005-11-03 | Anti-explosion connector with controllable switch relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520046230 CN2856694Y (en) | 2005-11-03 | 2005-11-03 | Anti-explosion connector with controllable switch relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2856694Y true CN2856694Y (en) | 2007-01-10 |
Family
ID=37600001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520046230 Expired - Fee Related CN2856694Y (en) | 2005-11-03 | 2005-11-03 | Anti-explosion connector with controllable switch relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2856694Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104647400A (en) * | 2013-11-20 | 2015-05-27 | 苏州科沃斯商用机器人有限公司 | Automatic air release device |
| CN104728595A (en) * | 2015-03-31 | 2015-06-24 | 张家港富瑞特种装备股份有限公司 | LNG fuel tank |
-
2005
- 2005-11-03 CN CN 200520046230 patent/CN2856694Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104647400A (en) * | 2013-11-20 | 2015-05-27 | 苏州科沃斯商用机器人有限公司 | Automatic air release device |
| CN104728595A (en) * | 2015-03-31 | 2015-06-24 | 张家港富瑞特种装备股份有限公司 | LNG fuel tank |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |