CN107366767A - The meltable hydraulic relief valve of fast-response - Google Patents
The meltable hydraulic relief valve of fast-response Download PDFInfo
- Publication number
- CN107366767A CN107366767A CN201710704470.XA CN201710704470A CN107366767A CN 107366767 A CN107366767 A CN 107366767A CN 201710704470 A CN201710704470 A CN 201710704470A CN 107366767 A CN107366767 A CN 107366767A
- Authority
- CN
- China
- Prior art keywords
- lever
- pole
- meltable
- valve
- sheet metal
- 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.)
- Pending
Links
- 230000004044 response Effects 0.000 title claims abstract description 26
- 229910052751 metal Inorganic materials 0.000 claims abstract description 43
- 239000002184 metal Substances 0.000 claims abstract description 43
- 230000014759 maintenance of location Effects 0.000 claims abstract description 23
- 229910000743 fusible alloy Inorganic materials 0.000 claims abstract description 13
- 150000002739 metals Chemical class 0.000 claims abstract description 4
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- 230000000994 depressogenic effect Effects 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims 1
- 239000000956 alloy Substances 0.000 claims 1
- 239000011521 glass Substances 0.000 description 9
- 238000005096 rolling process Methods 0.000 description 2
- 238000004901 spalling Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
- F16K17/38—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
- F16K17/383—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature the valve comprising fusible, softening or meltable elements, e.g. used as link, blocking element, seal, closure plug
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses the meltable hydraulic relief valve of fast-response, including：Mounting seat, through hole is provided with mounting seat, inserted valve is equipped with through-holes, holding nut is threaded with the top of inserted valve, button is provided with the elastic valve stem top of inserted valve, a support is provided with mounting seat, holding screw is connected with the screw top of support, holding screw is located at the top of button, a pole is provided between holding screw and button, the lower end of pole is resisted against on button, lever is provided between pole and holding screw, the upper end of pole leans with lever the inner lower surface, the ailhead of holding screw leans with lever the inner upper surface, it is provided between lever outer end and pole lower end and is welded meltable retention tab by fusible alloy by two sheet metals, lever outer end and pole lower end respectively with two one-to-one connections of sheet metal, a ventilating cover cylinder is provided with mounting seat.Above-mentioned bleeder valve reliability is high, is swift in response.
Description
Technical field
The present invention relates to electro-hydraulic actuator corollary equipment field, and in particular to can make electro-hydraulic actuator when fire occurs certainly
The dynamic meltable hydraulic relief valve of fast-response closed.
Background technology
Electro-hydraulic actuator is the dress that control information is received in automation equipment and applies control action to controll plant
Put, usual controll plant is valve.When fire occurs, it is necessary to which electro-hydraulic actuator closes pipeline valve to reduce loss in time,
An accumulator is usually provided with existing electro-hydraulic actuator, pressure oil is stored with accumulator, in accumulator and electro-hydraulic
A bleeder valve is provided with pipeline between actuator power output part, one is provided with bleeder valve organic solution is housed
Glass envelope, during normal work, glass envelope withstands valve element so that bleeder valve is closed, and the pressure oil in such accumulator can not just enter
Enter into electro-hydraulic actuator, when a fire, high temperature can be such that the organic solution in glass envelope expands and spalling glass envelope, release
Valve can be opened because valve element is upspring, and the pressure oil in such accumulator provides power with regard to that can release out, for electro-hydraulic actuator, close
Close electro-hydraulic actuator.But above-mentioned bleeder valve has a disadvantage that：First, because electro-hydraulic actuator is usually mounted to open air, so
Glass envelope easy bursting by freezing when environment temperature is less than -20 DEG C on bleeder valve, so that the functional reliability of bleeder valve is deteriorated；
2nd, organic solution expanded by heating needs the time, and organic solution spalling glass envelope can expend longer time again, and due to glass
There is individual difference in bubble so that the burst pressure that glass envelope can be born is there is also difference, so being released using what glass envelope opened and closed
Valve reaction is insensitive, can not open in time.
The content of the invention
The technical problems to be solved by the invention are：A kind of reliability height will be provided, be swift in response the ground easy liquation of fast-response
Press bleeder valve.
In order to solve the above problems, the technical solution adopted in the present invention is：The meltable hydraulic relief valve of fast-response, including：
Mounting seat, it is characterized in：A through hole is provided with mounting seat, an inserted valve is equipped with through-holes, in inserted valve
Top is threaded with a holding nut, and inserted valve can be held in mounting seat by holding nut, in the elasticity of inserted valve
Valve stem top is provided with a button, and when elastic valve rod is upspring, inserted valve is opened, and when elastic valve rod is depressed, inserted valve is closed,
A support is additionally provided with mounting seat, is connected with a holding screw in the screw top of support, holding screw, which is located at, to be pressed
The top of button, is provided with a pole between holding screw and button, and the lower end of pole is arranged at button upper table by insertion
Lower detent on face is resisted against on button, and a lever, the upper end of pole are provided between pole and holding screw
Leant by inserting the middle detent being arranged on the lower surface of lever the inner with lever the inner, the ailhead of holding screw leads to
The upper detent that is arranged on the upper surface of lever the inner of insertion is crossed to be leant with lever the inner, pole and lever against point
With mutually staggering against an in the vertical direction for holding screw and lever, it is additionally provided between lever outer end and pole lower end
One meltable retention tab, meltable retention tab are welded by two sheet metals by fusible alloy, lever outer end and pole lower end
Respectively with two one-to-one connections of sheet metal so that pole lower end can by meltable retention tab to lever outer end carry out it is spacing,
A ventilating cover cylinder that support, pole, lever, meltable retention tab can be covered is additionally provided with mounting seat；When rotation clamp screw
Nail is when making holding screw presses lever the inner, and meltable retention tab can be by making pole, lever, meltable guarantor to lever outer end is spacing
The framework for holding piece composition keeps balance without falling apart so that holding screw can make pole press button by presses lever, directly
Depressed to elastic valve rod by pole and close inserted valve；When temperature is increased to the fusing point of fusible alloy, fusible alloy can melt
Change, two panels sheet metal can separate, and the framework that now pole, lever, meltable retention tab are formed be able to not can keep balancing and falling apart, and make
Obtain elastic valve rod to lose pole pressing and upspring, so that inserted valve is opened.
Further, the meltable hydraulic relief valve of foregoing fast-response, wherein：Lever outer end and the attachment structure of sheet metal
For：An open-work is provided with sheet metal, lever outer end passes through open-work, and lever outer end is bent to be carried out down to sheet metal
It is spacing, first positioning boss that upper limit can be carried out to sheet metal, bending are additionally provided with the lever above sheet metal
Lever outer end and the first positioning boss sheet metal can be limited between the two.
Further, the meltable hydraulic relief valve of foregoing fast-response, wherein：Pole lower end and the bindiny mechanism of sheet metal
For：An open-work is provided with sheet metal, pole lower end passes through open-work, is provided with the pole above or below sheet metal
One can carry out the second spacing positioning boss to sheet metal.
Further, the meltable hydraulic relief valve of foregoing fast-response, wherein：Also include：With oil inlet, oil-out, valve
The valve seat of door installing port, inserted valve are installed in valve installing port by screw thread so that inserted valve can be turned on and off oil inlet
Oil circuit between oil-out.
Further, the meltable hydraulic relief valve of foregoing fast-response, wherein：Several are provided with the side wall of ventilating cover cylinder
For the air-vent for flowing into high-temperature gas.
Further, the meltable hydraulic relief valve of foregoing fast-response, wherein：Lever is turned under rolling over from middle part so that lever
Outer end is located at the inner lower section of lever, so that lever outer end and pole lower end are mutually close.
Advantages of the present invention is：The meltable hydraulic relief valve of fast-response of the present invention is opened using reliable mechanical structure
Valve closing door so that the normal work of the meltable hydraulic relief valve of fast-response will not be influenceed by low temperature, be let out so as to substantially increase
Put the reliability of valve；Secondly, described bleeder valve using thin and the meltable retention tab of large area experiences environment temperature, heat transfer
Good, thermal capacity is low, more sensitive so that the reaction opening speed of bleeder valve greatly improves；Furthermore the fusing point of fusible alloy is stable
Accurately so that the operating temperature point of bleeder valve is reliable and stable；Finally, the metal framework knot that pole, lever, meltable retention tab are formed
Structure is solid and reliable, without the risk for shattering and shifting failure, the reliability of bleeder valve is further improved.
Brief description of the drawings
Fig. 1 is the structural representation of the meltable hydraulic relief valve of fast-response of the present invention.
Fig. 2 is the configuration schematic diagram of the meltable hydraulic relief valve of fast-response shown in Fig. 1.
Embodiment
With reference to specific embodiments and the drawings, the present invention is described in further detail.
As shown in Figure 1 and Figure 2, the meltable hydraulic relief valve of fast-response, including：Mounting seat 1, one is provided with mounting seat 1
The through hole 11 arranged vertically, an inserted valve 2 is equipped with through hole 11, inserted valve 2 is a kind of existing hydraulic valve, is being inserted
The top of valve 2 is threaded with a holding nut 21, and inserted valve 2 can be held in mounting seat 1 by holding nut 21, is inserting
The elastic valve stem top of dress valve 2 is provided with a button 22, and when elastic valve rod is upspring, inserted valve 2 is opened, and elastic valve rod is depressed
When, inserted valve 2 is closed, and a support 3 is additionally provided with mounting seat 1, and a vertical cloth is connected with the screw top of support 3
The holding screw 4 put, holding screw 4 are located at the top of button 22, and a pole is provided between holding screw 4 and button 22
5, the lower end of pole 5 is arranged at the lower detent 221 on the upper surface of button 22 to be resisted against on button 22 by insertion, is propping up
A lever 6 is provided between bar 5 and holding screw 4, in the present embodiment, lever 6 is turned under rolling over from middle part so that lever 6
Outer end is located at the inner lower section of lever 6, so that the outer end of lever 6 and the lower end of pole 5 are mutually close；The upper end of pole 5 is set by insertion
The middle detent 61 being placed on 6 inner lower surface of lever is leant with the inner of lever 6, and the ailhead of holding screw 4, which passes through, to be inserted
Enter to be arranged at the upper detent 62 on 6 inner upper surface of lever to be leant with the inner of lever 6, pole 5 and lever 6 against
Point and holding screw 4 mutually stagger with lever 6 against an in the vertical direction, between the outer end of lever 6 and the lower end of pole 5 also
A meltable retention tab 7 is provided with, meltable retention tab 7 is welded by two sheet metals 71 by fusible alloy, the outer end of lever 6
With the lower end of pole 5 respectively with two 71 one-to-one connections of sheet metal so that the lower end of pole 5 can be by meltable retention tab 7 to lever 6
Outer end carry out it is spacing, be additionally provided with mounting seat 1 one support 3, pole 5, lever 6, meltable retention tab 7 can be covered it is saturating
Gas hood cylinder 8, in the present embodiment, ventilating cover cylinder 8 are threadedly coupled with mounting seat 1, and if being provided with the side wall of ventilating cover cylinder 8
The dry air-vent 81 for being used to flow into high-temperature gas；When rotating holding screw 4 and making the presses lever 6 of holding screw 4 inner, easily
Molten retention tab 7 can by the outer end of lever 6 it is spacing come make the framework that pole 5, lever 6, meltable retention tab 7 are formed keep balance and
Do not fall apart so that holding screw 4 can make pole 5 press button 22 by presses lever 6, until elastic valve rod is pressed by pole 5
Close inserted valve 2 down；When temperature is increased to the fusing point of fusible alloy, fusible alloy can melt, the meeting of two panels sheet metal 71
Separate, the framework that now pole 5, lever 6, meltable retention tab 7 are formed be able to not can keep balancing and falling apart so that elastic valve rod loses
Pole 5 is gone to press and upspring, so that inserted valve 2 is opened.Fusible alloy is a kind of metal very sensitive to temperature, as long as temperature
Reach the fusing point of fusible alloy, fusible alloy will melt at once, so the meltable hydraulic relief valve of described fast-response is occurring
Can quickly it be opened during fire so that the pressure oil in accumulator can be released rapidly, and power is provided for electro-hydraulic actuator, so that electric
Hydraulic actuator is closed.
In the present embodiment, the outer end of lever 6 and the attachment structure of sheet metal 71 are：One is provided with sheet metal 71 thoroughly
Hole 711, the outer end of lever 6 passes through open-work 711, and the outer end of lever 6 is folded upward at carrying out lower limit to sheet metal 71, in metal
First positioning boss 63 that upper limit can be carried out to sheet metal 71 is additionally provided with the lever 6 of the top of piece 71, is folded upward at
The outer end of lever 6 and the first positioning boss 63 sheet metal 71 can be limited between the two.
The lower end of pole 5 and the bindiny mechanism of another sheet metal 71 are：One is also equipped with another sheet metal 71
Open-work 711, the lower end of pole 5 pass through open-work 711, and being provided with one on the pole 5 below sheet metal 71 can enter to sheet metal 71
The second spacing positioning boss 51 of row.
In the present embodiment, set lower detent 221, middle detent 61, upper detent 62, the outer end of lever 6 to
Upper bending, the first positioning boss 63, the second positioning boss 51 are provided to the frame for forming pole 5, lever 6, meltable retention tab 7
Frame can more be stablized after keeping balancing, and prevent because vibrations make framework fall apart.
In the present embodiment, the meltable hydraulic relief valve of fast-response, in addition to：With oil inlet 91, oil-out 93, valve peace
The valve seat 9 of mouth 92 is filled, inserted valve 2 is installed in valve installing port 92 by screw thread so that inserted valve 2 can be turned on and off oil-feed
Oil circuit between mouth 91 and oil-out 93.
Claims (6)
1. the meltable hydraulic relief valve of fast-response, including：Mounting seat, it is characterised in that：A through hole is provided with mounting seat,
An inserted valve is equipped with through hole, a holding nut is threaded with the top of inserted valve, inserted valve can pass through support
Nut is held in mounting seat, and the elastic valve stem top of inserted valve is provided with a button, when elastic valve rod is upspring, inserted valve
Open, when elastic valve rod is depressed, inserted valve is closed, and a support is additionally provided with mounting seat, in the screw top of support
A holding screw is connected with, holding screw is located at the top of button, and a pole is provided between holding screw and button,
The lower end of pole is arranged at the lower detent on button upper surface to be resisted against on button, in pole and clamp screw by insertion
Be provided with a lever between nail, the upper end of pole by insertion be arranged at middle detent on the lower surface of lever the inner come with
Lever the inner leans, the ailhead of holding screw by insertion be arranged at upper detent on the upper surface of lever the inner come with thick stick
Bar the inner leans, mutually the staggering against an in the vertical direction against point and holding screw and lever of pole and lever,
A meltable retention tab is additionally provided between lever outer end and pole lower end, meltable retention tab is passed through meltable by two sheet metals
Alloy is welded, lever outer end and pole lower end respectively with two one-to-one connections of sheet metal so that pole lower end can pass through
Meltable retention tab is spacing to the progress of lever outer end, and one is additionally provided with mounting seat can be by support, pole, lever, meltable guarantor
Hold the ventilating cover cylinder that piece covers；When rotation holding screw makes holding screw presses lever the inner, meltable retention tab can be by right
The spacing framework form pole, lever, meltable retention tab in lever outer end keeps balancing without falling apart so that holding screw energy
Pole is set to press button by presses lever, until elastic valve rod is depressed by pole and closes inserted valve；When temperature raises
To fusible alloy fusing point when, fusible alloy can melt, and two panels sheet metal can separate, now pole, lever, meltable retention tab structure
Into framework can not keep balance and fall apart so that elastic valve rod lose pole pressing and upspring so that inserted valve open.
2. the meltable hydraulic relief valve of fast-response according to claim 1, it is characterised in that：Lever outer end and the company of sheet metal
Binding structure is：An open-work is provided with sheet metal, lever outer end passes through open-work, and the bending of lever outer end comes to sheet metal
Lower limit is carried out, first convex that upper limit can be carried out to sheet metal is additionally provided with the lever above sheet metal
Sheet metal can be limited between the two by platform, the lever outer end of bending and the first positioning boss.
3. the meltable hydraulic relief valve of fast-response according to claim 1 or 2, it is characterised in that：Pole lower end and sheet metal
Bindiny mechanism be：An open-work is provided with sheet metal, pole lower end passes through open-work, the branch above or below sheet metal
One is provided with bar can carry out the second spacing positioning boss to sheet metal.
4. the meltable hydraulic relief valve of fast-response according to claim 1 or 2, it is characterised in that：Also include：With oil-feed
Mouth, oil-out, the valve seat of valve installing port, inserted valve are installed in valve installing port by screw thread so that inserted valve can be opened
Or the oil circuit closed between oil inlet and oil-out.
5. the meltable hydraulic relief valve of fast-response according to claim 1 or 2, it is characterised in that：In the side wall of ventilating cover cylinder
It is provided with several air-vents for being used to flow into high-temperature gas.
6. the meltable hydraulic relief valve of fast-response according to claim 1 or 2, it is characterised in that：Lever is turned under from middle part
Folding so that lever outer end is located at the inner lower section of lever, so that lever outer end and pole lower end are mutually close.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710704470.XA CN107366767A (en) | 2017-08-17 | 2017-08-17 | The meltable hydraulic relief valve of fast-response |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710704470.XA CN107366767A (en) | 2017-08-17 | 2017-08-17 | The meltable hydraulic relief valve of fast-response |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107366767A true CN107366767A (en) | 2017-11-21 |
Family
ID=60309064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710704470.XA Pending CN107366767A (en) | 2017-08-17 | 2017-08-17 | The meltable hydraulic relief valve of fast-response |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107366767A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194672A (en) * | 2018-02-12 | 2018-06-22 | 上海齐耀热能工程有限公司 | Pressure relief device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2049415A (en) * | 1979-04-30 | 1980-12-31 | Grinnell Fire Protection | A fire-protection sprinkler head |
| US4757865A (en) * | 1986-11-19 | 1988-07-19 | Star Sprinkler Corporation | Fast response sprinkler head |
| CN101426585A (en) * | 2006-02-15 | 2009-05-06 | 维克托里克公司 | The special sprinkler that is used for fire-fighting |
| CN201524377U (en) * | 2009-11-14 | 2010-07-14 | 瑞安市长城消防器材有限公司 | Early suppression fast response sprinkler |
| CN201524375U (en) * | 2009-11-14 | 2010-07-14 | 瑞安市长城消防器材有限公司 | Early-state spray head capable of preventing quick response |
| US8122969B1 (en) * | 2000-11-22 | 2012-02-28 | Tyco Fire Products Lp | Low pressure, extended coverage, fire protection sprinkler |
| CN104096333A (en) * | 2014-06-10 | 2014-10-15 | 浙江恒安消防安全设备有限公司 | Early suppression fast response sprinkler |
| TW201607583A (en) * | 2014-08-26 | 2016-03-01 | Senju Sprinkler Co Ltd | Sprinkler head |
| CN207298005U (en) * | 2017-08-17 | 2018-05-01 | 张家港市艾罗执行器有限公司 | The meltable hydraulic relief valve of fast-response |
-
2017
- 2017-08-17 CN CN201710704470.XA patent/CN107366767A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2049415A (en) * | 1979-04-30 | 1980-12-31 | Grinnell Fire Protection | A fire-protection sprinkler head |
| US4757865A (en) * | 1986-11-19 | 1988-07-19 | Star Sprinkler Corporation | Fast response sprinkler head |
| US8122969B1 (en) * | 2000-11-22 | 2012-02-28 | Tyco Fire Products Lp | Low pressure, extended coverage, fire protection sprinkler |
| CN101426585A (en) * | 2006-02-15 | 2009-05-06 | 维克托里克公司 | The special sprinkler that is used for fire-fighting |
| CN201524377U (en) * | 2009-11-14 | 2010-07-14 | 瑞安市长城消防器材有限公司 | Early suppression fast response sprinkler |
| CN201524375U (en) * | 2009-11-14 | 2010-07-14 | 瑞安市长城消防器材有限公司 | Early-state spray head capable of preventing quick response |
| CN104096333A (en) * | 2014-06-10 | 2014-10-15 | 浙江恒安消防安全设备有限公司 | Early suppression fast response sprinkler |
| TW201607583A (en) * | 2014-08-26 | 2016-03-01 | Senju Sprinkler Co Ltd | Sprinkler head |
| CN207298005U (en) * | 2017-08-17 | 2018-05-01 | 张家港市艾罗执行器有限公司 | The meltable hydraulic relief valve of fast-response |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194672A (en) * | 2018-02-12 | 2018-06-22 | 上海齐耀热能工程有限公司 | Pressure relief device |
| CN108194672B (en) * | 2018-02-12 | 2019-11-26 | 上海齐耀热能工程有限公司 | Pressure relief device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5244799B2 (en) | steam trap | |
| CN207298005U (en) | The meltable hydraulic relief valve of fast-response | |
| GB2101314A (en) | Hydride actuator | |
| CN107366767A (en) | The meltable hydraulic relief valve of fast-response | |
| CN201836397U (en) | Automatic exhaust valve | |
| CN106610231B (en) | A kind of negative pressure air cooler condensate system drainage method | |
| CN107269903A (en) | Automatic reset smoke-discharging fire-proof valve | |
| EP3034977B1 (en) | Latent heat reservoir | |
| CN101776174A (en) | Self-operated type temperature control valve with antifreezing function | |
| JP5442322B2 (en) | Power element for temperature expansion valve | |
| NO151171B (en) | HEATING REGULATOR | |
| CN206280517U (en) | Self-operated type automatic fire control shower valve | |
| CN202171121U (en) | Capsule pilot-operated type steam drain valve | |
| CN203615624U (en) | Solar water tank liquid level control device | |
| US1206485A (en) | Valve. | |
| CN102537385A (en) | Fireproof valve blade | |
| CN2216557Y (en) | Automatic resetting fireproof tuyer | |
| CN201129468Y (en) | Water control apparatus of external type solar water heater | |
| CN214853931U (en) | High-power electric frying furnace temperature limiting device | |
| CN2213265Y (en) | Automatic resetting fire-proof valve | |
| CN202228911U (en) | Temperature-adjusting pilot-operated steam trap with bimetallic strip | |
| CN217408514U (en) | Pressure relief structure for high-temperature heating device | |
| JP2010065832A (en) | Float type steam trap | |
| US3227170A (en) | Fusible safety valve mounting | |
| CN2718644Y (en) | Displacement output temperature control element |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yang Daijun Inventor after: Liu Guiming Inventor after: Zhang Jian Inventor before: Liu Guiming Inventor before: Zhang Jian |
|
| CB03 | Change of inventor or designer information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171121 |
|
| RJ01 | Rejection of invention patent application after publication |