CN202392216U - Gas switch - Google Patents
Gas switch Download PDFInfo
- Publication number
- CN202392216U CN202392216U CN2011205364171U CN201120536417U CN202392216U CN 202392216 U CN202392216 U CN 202392216U CN 2011205364171 U CN2011205364171 U CN 2011205364171U CN 201120536417 U CN201120536417 U CN 201120536417U CN 202392216 U CN202392216 U CN 202392216U
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- China
- Prior art keywords
- valve
- heat
- pressure spring
- flow path
- circulation flow
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- Expired - Fee Related
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Abstract
The utility model provides a gas switch, comprising a pipe shell with a flow channel; a hand-operated rotating valve is arranged on the flow channel to open/close the flow channel; a thermal valve chamber communicated with the flow channel is formed on the pipe shell on one side of the rotating valve; a lower portion of the thermal valve chamber is provided with a thermal valve, a containing space is formed on an upper portion of the thermal valve chamber; the thermal valve comprises a base fixed on a lower portion of the thermal valve chamber, a valve body combined on the base with a low-melting-point solder, and a pressure spring clamped between the base and the valve body; the valve body is pushed into the containing space by elastic restoring force of the pressure spring when the solder is molten to intercept the flow channel. The utility model has the beneficial effects that the thermal valve can coordinate with a plurality of rotating valves to open/close gas; due to structure and position settings of the thermal valve, the thermal valve senses heat more acutely and has shorter reaction time; the thermal valve is locked on the pipe shell by a screw thread, so that the thermal valve is assembled/disassembled conveniently.
Description
Technical field
The utility model relates to a kind of construction of switch, refers to that especially a kind of applicability is strong, and sensible heat is sensitive, the gas switch of easy accessibility.
Background technique
M356863 number announcement of the novel patent of TaiWan, China a kind of " gas switch " with automatic cut-off; It is characterized in that below the cock of an existing gas switch, being provided with the axis hole that communicates with its radial direction through hole; In order to a known automatic cut-off to be installed, this automatic cut-off includes stand apparatus, cap body and pressure-proof spring.When automatic cut-off because factor such as fire causes temperature when being higher than the fusing point of the hot melt sticking agent that is used for connecting stand apparatus and cap body; This sticking agent promptly melts and loses the effect of attachment cap body and stand apparatus; So the pressure-proof spring that is held between cap body and the stand apparatus is to advance through its elastic recovery force urges cap body; Make the hole wall driving fit of its periphery wall and cock axis hole and inaccessible gas path stops air feed.
Therefore said automatic cut-off can not increase the resistance or the build-up of pressure loss of gas path because of being installed in outside the gas path, is the main innovate point of aforementioned patent yet.But automatic cut-off is arranged on the result of cock below, has following disappearance at least:
1. this automatic cut-off is to adopting cock to open and close the gas switch of gas path and design, therefore only being fit to use with the cock cooperation, and being difficult to be implemented on the gas switch of ball valve or fly valve; Because ball valve or fly valve can't provide the space of taking in automatic cut-off, although can, also there are processing and problem such as airtight to overcome.
2. this automatic cut-off is embedded in the pipeline shell of gas switch fully; And it is far away relatively from the outflow opening that connects gas utensil (thermal source); The outside heat that produces must just can be passed to automatic cut-off through pipeline shell heat conduction, direct sensible heat, just; When pipeline shell had reached 100 ℃, cut-off possibly have only 70 ℃ automatically.Therefore, this automatic cut-off reaction time is longer, is difficult to interdict gas in very first time fusing.
3. this automatic cut-off only allows to be arranged on the below of cock, lacks flexibility in the manufacturing, is difficult to satisfy different clients' demand.
4. this automatic cut-off is embedded in the pipeline shell, and mounting or dismounting are difficult for, in case because test or other former damage after, can not renew easily.
Declare that as for aforementioned patent the length of this gas switch and weight is provided with hot cut-off and ultra flow shutoff device simultaneously on the gas path existing gas switch are little, can reduce the use of material, so the joint that reduces cost, the then non-fact.Reason is, automatic cut-off is arranged on the cock below, though and can to reduce the length of pipeline shell obvious; Unquestionable; But the relative height that also can increase pipeline shell makes its overall weight fail to reduce at all, therefore aspect cost of material, may not be certain and can reduce.
The model utility content
The purpose of the utility model is to provide a kind of gas switch of improvement, and the moving valve of its heat can cooperate rotating valves such as cock, ball valve or fly valve to use.
Time purpose of the utility model is to provide a kind of gas switch of improvement, and the moving valve of its heat can directly react external temperature and fusing in time, and blocking gas path stops air feed, avoids greater disaster.
Another purpose of the utility model is to provide a kind of gas switch of improvement, and the moving valve of its heat can be arranged on the inflow side or the outflow side of pipeline shell, satisfies different clients' demand.
The another purpose of the utility model is to provide a kind of gas switch of improvement, and the moving valve of its heat uses screw thread to be installed on the pipeline shell, and mounting or dismounting can renew easily at any time, and do not need any part beyond the moving valve of dismounting heat.
For realizing above-mentioned purpose, the utility model adopts following technological scheme:
A kind of gas switch comprises one and has the pipeline shell of circulation flow path, on this circulation flow path, is provided with a manually operated rotating valve, to open and close this circulation flow path; Formation one is moved valve chamber with the heat that this circulation flow path communicates on this pipeline shell of this rotating valve one side, and the bottom of the moving valve chamber of this heat is provided with a heat and moves valve, and an accommodation space is then formed at top; The moving valve of this heat comprise one be fixed on the moving valve chamber bottom of this heat base, use eutectic solder to be combined in the valve body on this base; And a pressure spring of being seized on both sides by the arms between this base and this valve body, this valve body is pushed in this accommodation space by the elastic-restoring force of this pressure spring when this solder fusing and interdicts this circulation flow path.
Said gas switch comprises a safety valve again; This safety valve possesses a support; This support is remained on this circulation flow path by a sleeve, and the valve plug with a umbrella shape props up and be held in this support for endwisely slipping freely, and a pressure spring is around the bar portion of this valve plug; The end that is held in this support and this valve cock stem portion is propped up at the two ends of this pressure spring respectively, leaves the valve seat that is formed at this barrel forward end to force this valve plug to be stepped back through its elastic-restoring force.
The valve plug of said safety valve comprise again one be formed at its front end protuberance, this protuberance submerges when this valve plug is stepped back because of said pressure spring in the said support.
The moving valve of said heat is locked at the bottom of the moving valve chamber of this heat through the external screw thread that is formed at this base peripheral part.
The base inside of the moving valve of said heat has a guide pin bushing, and said valve body is the outside that hollow is enclosed within this guide pin bushing, and said pressure spring is put into the inside of this guide pin bushing and this valve body.
Said rotating valve is cock, ball valve or fly valve.
The beneficial effect of the utility model is:
1. the moving valve of heat can cooperate rotating valves such as cock, ball valve or fly valve to open and close the gas path, do not receive can only with the restriction of cock cooperation.
2. the moving valve portion assembly (base) of heat exposes pipeline shell, and is arranged on the gas outflow side, and is more sharp for thermoinduction therefore more near gas utensil (thermal source), can shorten the reaction time, in time fuses and interdicts gas, avoids greater disaster.
3. the moving valve of heat can be arranged on the inflow side or the outflow side of gas switch, meets the need of market.
4. the moving valve of heat uses screw-threaded coupling on pipeline shell, mounting or dismounting easily, in case because test or other former damage after, all can renew at any time, and not need any part beyond the moving valve of dismounting heat.
Description of drawings
Fig. 1 is the utility model first embodiment's a axial section, shows that cock, the moving valve of heat and safety valve all are in out the state of valve position.
Fig. 2 is the sectional drawing that is similar to Fig. 1, show that cock, safety valve are in out valve position, and the moving valve start of heat becomes to close valve position, interdicts the state of circulation flow path.
Fig. 3 is the sectional drawing that is similar to Fig. 1, show that cock, the moving valve of heat are in out valve position, and the safety valve start becomes to close valve position, interdicts the state of circulation flow path.
Fig. 4 is the utility model second embodiment's a axial section, shows that ball valve, the moving valve of heat and safety valve all are in out the state of valve position.
[primary component label declaration]
10,10a ... Gas switch
20,20a ... Pipeline shell
21 ... Circulation flow path
22 ... Inflow entrance
23 ... Joint
24 ... Outflow opening
25 ... Joint
26 ... The cock chamber
27 ... The moving valve chamber of heat
27a ... Accommodation space
28 ... Guide hole
28a ... Guide groove
29 ... Ball valve chamber
30 ... Cock
31 ... The duct
40,40a ... Operation equipment
41,41a ... Connecting rod
42,42a ... Screw
43,43a ... Knob
44,44a ... Pressure spring
45 ... Latch
46 ... Trip
50 ... The moving valve of heat
51 ... Base
52 ... Valve body
53 ... Pressure spring
54 ... External screw thread
55 ... Guide pin bushing
60 ... Safety valve
61 ... Support
62 ... Valve plug
63 ... Pressure spring
64 ... Bar portion
65 ... Protuberance
66 ... Sleeve
67 ... Valve seat
70 ... Ball valve
71 ... The duct
72 ... Valve seat.
Embodiment
Fig. 1 is axial (Gas Flow direction) section of the utility model " gas switch " 10, can supply to explain the technology contents of the utility model.This gas switch 10 includes pipeline shell 20, cock 30, operation equipment 40, the moving valve 50 of heat and safety valve 60.Wherein:
Pipeline shell 20; The inner circulation flow path 21 that forms; Form an inipple 23 in inflow entrance 22 outsides of circulation flow path 21 and supply to connect gas delivery pipe (not shown); Then form the joint 25 that a confession connects flexible pipe (not shown) in outflow opening 24 outsides of circulation flow path 21, the other end of this flexible pipe is to be connected to gas utensil (not graphic).Said joint 23,25 also can be other pattern, does not receive the restriction of accompanying drawing illustrated embodiment.Again, on the circulation flow path 21 between inflow entrance 22 and the outflow opening 24, form opening cock chamber 26 up, be used for taking in cock 30; The moving valve chamber 27 of one downward opening heat then is set on the pipeline shell 20 between cock chamber 26 and the outflow opening 24; The bottom of the moving valve chamber 27 of this heat is used for installing the moving valve 50 of heat; Top is the coniform accommodation space 27a that intersects vertically with circulation flow path 21, states after its effect is waited until, and shows for the time being.The moving valve chamber 27 of heat also can be arranged on the inflow side of pipeline shell 20, is not located at the restriction of outflow side.Said inflow side and outflow side are to be the boundary with cock chamber 26, are defined as inflow side (not label) from inflow entrance 22 to cock chamber 26, are defined as outflow side (not label) from 24 of cock chamber 26 to outflow openings.Opening in cock chamber 26 also has pair of corresponding guide hole 28 and is arranged on its circumferential part, and an end of this guide hole 28 extends upward and enlarges its height, states after its effect is waited until equally.
Operation equipment 40 comprises that a connecting rod 41 is enclosed within above the cock 30, then uses a screw 42 keyeds one knob 43 above the connecting rod 41.Also has a pressure spring 44 between connecting rod 41 and the rotating valve 30; And there is a latch 45 radially to run through connecting rod 41 and cock 30; The guide hole 28 that pipeline shell 20 is then inserted at the two ends of latch 45 rotates along with connecting rod 41 and moves along guide hole 28, with the maximum rotation angle (about 90 degree) of restriction cock 30.So, when starting turning knob 43, can drive cock 30 through connecting rod 41 and change valve position, make its duct 31 communicate or not communicate, and reach the purpose that opens and closes circulation flow path 21 with the circulation flow path 21 of pipeline shell 20.Be in when closing valve position in cock 30; Expansion place of guide hole 28 is come at the two ends of latch 45 because of the elastic force of spring 44; Therefore, in the time will opening cock 30, must depress knob 43 earlier and could rotate; And then drive cocks 30 starts through connecting rod 41 and become to open valve position, guarantee that gas switch 10 can optionally not opened.Otherwise when wanting closed gas switch 10, directly turning knob 43 can drive cock 30 with transferring blocking circulation flow path 21.
The moving valve 50 of heat comprises a base 51, a valve body 52 and a pressure spring 53.Base 51 is fixed on the bottom of the moving valve chamber 27 of heat, and its inside provides a guide pin bushing 55, does straight line motion with limiting valve body 52, prevents that it from falling partially.Valve body 52 is enclosed within guide pin bushing 55 outsides of base 51 for the hollow cone shape, and combines with eutectic solder (not shown) and base 51.Scolder preferably uses at temperature 80 and 100 ℃ of fusible kamash alloys of scope, also can use other material that can melt in other temperature range for suitable purposes.Scolder is arranged between the peripheral part of interior perimembranous and valve body 52 of base 51.Pressure spring 53 was put into the inside of the guide pin bushing 55 and the valve body 52 of base 51 before valve body 52 is welded on base 51, wherein an end props up and is held in base 51, and the other end then is supported on the valve body 52 and is compressed state, to accumulate elastic energy.In preferred embodiment; The base 51 of the moving valve 50 of heat has the external screw thread 54 that is formed at its peripheral part; The opening of the moving valve chamber 27 of heat then is provided with female thread (not label), the moving valve 50 of heat can be installed and removed through screw thread be installed in freely on the pipeline shell 20, can change at any time after convenient the damage.
As shown in Figure 2, because factors such as fire cause temperature and rise when surpassing the maximum temperature of eutectic solder permission, scolder will melt and cause valve body 52 to break away from base 51 through the elastic force of pressure spring 53 when the moving valve 50 of heat; Break away from the way at valve body 52; Being slidingly matched of peripheral part through perimembranous in it and guide pin bushing 55; Valve body 52 can be slipped in the accommodation space 27a impartially, circulation flow path 21 is therefrom blocked, between both surface of contact, form simultaneously appropriate airtight and choking flow path 21; Blocking gas avoids greater disaster.
As shown in Figure 1, when gas utensil normal operating condition, valve plug 62 forward-and-rearward gas pressure differences are less than the elastic force of pressure spring 63.Therefore, the valve plug 62 of safety valve 60 remains on out valve position, and gas can be circulated.
As shown in Figure 3; When the abnormal conditions that come off etc. by the gas utensil like the gas hose front end take place when; Valve plug 62 forward-and-rearward gas pressure differences are promptly greater than the elastic force of pressure spring 63, valve plug 62 can be advanced and adherence in valve seat 67 and blocking circulation flow path 21 stops air feed.
When safety valve 60 was had an effect, the protuberance 65 that is formed at valve plug 62 front ends central authorities was to protrude in sleeve 66 the place aheads, and manual operation knob 43 rotates cock 30 afterwards; In the rotation way of cock 30, its protuberance 65 that can promote valve plug 62 backward makes valve plug 62 lift off a seat 67, and opens valve position because of the automatic involution of the elastic force of pressure spring 63, recovers the gas circulation.
The cock (Cock) the 30th that the foregoing description adopts, a kind of rotating valve, but rotating valve also has various kind, for example ball valve (Ball Valve), fly valve (Butterfly Valve) etc.Therefore, the utility model does not receive the restriction with the cock cooperation, also can cooperate rotating valves such as ball valve, fly valve to implement.The axial section that Fig. 4 implements for the utility model collocation ball valve 70.Gas switch 10a that present embodiment disclosed and the difference of the foregoing description mainly are to use ball valve 70 to open and close circulation flow path 21; Remaining part is identical; Therefore part same as the previously described embodiments is all with identical symbology; And before the explanation for the foregoing description also was applicable to present embodiment, no longer repeated.In the present embodiment, pipeline shell 20a forms opening ball valve chamber 29 up on the circulation flow path 21 between inflow entrance 22 and the outflow opening 24, be used for taking in the ball valve 70 with gas flow passage 71; Both sides in ball valve chamber 29 then are equipped with the ring-type valve seat 72 that resin is processed separately, and ball valve 70 is seized on both sides by the arms between two valve seats 72, borrow dressing on ball valve 70 operation equipment 40a and rotate to open and close circulation flow path 21.Said operation equipment 40a comprises that a connecting rod 41a is enclosed within above the ball valve 70; Overlapping a knob 43 above the connecting rod 41a; One screw 42a passes knob 43a and screws in connecting rod 41a, knob 43a can be moved up and down with respect to connecting rod 41a on the one hand, but drivening rod 41a rotates on the one hand.Also have one between knob 43a and the pipeline shell 20a around connecting rod 41a pressure spring 44a on every side; Pipeline shell 20a has the guide groove 28a of a pair of corresponding setting at the peripheral part of the opening of ball valve chamber 29 simultaneously; The end of this guide groove 28a extends upward to enlarge its height; The interior perimembranous of knob 43a then comprises the trip 46 of a pair of corresponding setting, can move along guide groove 28a, with the maximum rotation angle (about 90 degree) of restriction ball valve 70.So, borrowing to press down knob 43a and rotate it, can drive ball valve 70 through connecting rod 41a and change valve position, reaching the purpose that opens and closes gas circulation flow path 21.Based on identical security reason, when ball valve 70 is in when closing valve position expansion place that the trip 46 of knob 43a is come guide groove 28a because of the elastic force of pressure spring 44a; Therefore, in the time ball valve 70 will being opened, must depress knob 43a earlier; Could rotate; Pass on identical rotation from connecting rod 41a to ball valve 70 again, make ball valve 70 starts become to open valve position, guarantee that gas switch 10a can optionally not opened.Otherwise, when closed gas switch 10a, direct turning knob 43a and drive ball valve 70 blocking circulation flow paths 21 then through connecting rod 41a.
As for fly valve is the diametric(al) that is installed in axle in disk, and is the valve of center swing with this.The utility model looks good with fly valve equally and implements.
Certainly, the foregoing description can be under the scope that does not break away from the utility model in addition some variations, so above explanation comprises and accompanying drawing shown in whole items should be regarded as exemplary, but not in order to limit the claim protection domain of the utility model.
Claims (6)
1. a gas switch comprises one and has the pipeline shell of circulation flow path, on this circulation flow path, is provided with a manually operated rotating valve, to open and close this circulation flow path; It is characterized in that formation one is moved valve chamber with the heat that this circulation flow path communicates on this pipeline shell of this rotating valve one side, the bottom of the moving valve chamber of this heat is provided with a heat and moves valve, and an accommodation space is then formed at top; The moving valve of this heat comprise one be fixed on the moving valve chamber bottom of this heat base, use eutectic solder to be combined in the valve body on this base; And a pressure spring of being seized on both sides by the arms between this base and this valve body, this valve body is pushed in this accommodation space by the elastic-restoring force of this pressure spring when this solder fusing and interdicts this circulation flow path.
2. gas switch as claimed in claim 1 is characterized in that it comprises a safety valve again; This safety valve possesses a support; This support is remained on this circulation flow path by a sleeve, and the valve plug with a umbrella shape props up and be held in this support for endwisely slipping freely, and a pressure spring is around the bar portion of this valve plug; The end that is held in this support and this valve cock stem portion is propped up at the two ends of this pressure spring respectively, leaves the valve seat that is formed at this barrel forward end to force this valve plug to be stepped back through its elastic-restoring force.
3. gas switch as claimed in claim 2 is characterized in that, the valve plug of said safety valve comprise again one be formed at its front end protuberance, this protuberance submerges when this valve plug is stepped back because of said pressure spring in the said support.
4. like each described gas switch in the claim 1 to 3, it is characterized in that the moving valve of said heat is locked at the bottom of the moving valve chamber of this heat through the external screw thread that is formed at this base peripheral part.
5. like each described gas switch in the claim 1 to 3, it is characterized in that the base inside of the moving valve of said heat has a guide pin bushing, said valve body is the outside that hollow is enclosed within this guide pin bushing, and said pressure spring is put into the inside of this guide pin bushing and this valve body.
6. like each described gas switch in the claim 1 to 3, it is characterized in that said rotating valve is cock, ball valve or fly valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205364171U CN202392216U (en) | 2011-12-20 | 2011-12-20 | Gas switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205364171U CN202392216U (en) | 2011-12-20 | 2011-12-20 | Gas switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202392216U true CN202392216U (en) | 2012-08-22 |
Family
ID=46667143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205364171U Expired - Fee Related CN202392216U (en) | 2011-12-20 | 2011-12-20 | Gas switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202392216U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883875A (en) * | 2012-12-21 | 2014-06-25 | 黄瑞宗 | Gas fitting capable of blocking at low pressure |
-
2011
- 2011-12-20 CN CN2011205364171U patent/CN202392216U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883875A (en) * | 2012-12-21 | 2014-06-25 | 黄瑞宗 | Gas fitting capable of blocking at low pressure |
| CN103883875B (en) * | 2012-12-21 | 2015-09-23 | 黄瑞宗 | Gas fitting capable of blocking at low pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120822 Termination date: 20171220 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |