CN104565463A - Pressure regulating valve - Google Patents
Pressure regulating valve Download PDFInfo
- Publication number
- CN104565463A CN104565463A CN201510002373.7A CN201510002373A CN104565463A CN 104565463 A CN104565463 A CN 104565463A CN 201510002373 A CN201510002373 A CN 201510002373A CN 104565463 A CN104565463 A CN 104565463A
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- Prior art keywords
- pressure
- leather cup
- ring
- water outlet
- black box
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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
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention belongs to the mechanical technical field and relates to watering equipment, particularly to a pressure regulating valve. The problems that the existing pressure regulating valve is low in sensitivity and unstable in pressure are solved. The pressure regulating valve comprises a base and a housing, wherein a pressure regulating device is arranged inside the housing; the base is provided with a water inlet, a water outlet and an opening which are communicated with each other; the bottom end of the housing is snapped to the opening so as to seal the opening; the pressure regulating valve also comprises a sealing assembly and a pressing rod, wherein the sealing assembly is arranged in the opening; the sealing assembly is attached to the inner surface of the opening and the water outlet is sealed through the sealing assembly; the lateral side of the sealing assembly is provided with a plurality of water outlet holes which are communicated with the water outlet; the bottom surface of the sealing assembly is provided with a communication hole which is communicated with the water inlet; one end of the pressing rod is connected with the pressure regulating device and the other end of the pressing rod is inserted into the sealing assembly to block the communication hole through the pressure regulating device; the pressing rod can be jacked through the water flow and the water flow flows into the water outlet through the water outlet holes. The pressure regulating valve has the advantages of being high in sensitivity and stable in pressure.
Description
Technical field
The present invention relates to a kind of watering appliance, particularly a kind of pressure regulator valve.
Background technique
To be high-pressure medium by an aperture be charged in a relatively large chamber realizes decompression for the voltage-regulation principle of pressure regulator valve.Be actually by decompression of damming, valve rod and diaphragm (piston) are installed between snout cavity and outlet plenum, valve rod controls the size of aperture and is connected with diaphragm (piston), the one side of diaphragm or piston is outlet plenum, and one side is the pressure of setting, and high-pressure medium enters valve body from snout cavity, after overcoming the pressure of setting, jack-up valve rod, medium flows into outlet plenum from aperture, completes voltage regulation function.As long as give a fixing pressure like this, so the pressure of outlet plenum will equal this pressure always, and pressure of this setting can be provided by spring or source of the gas or pressure source.
Existing pressure regulator valve adopts diaphragm and piston structure mostly, and diaphragm structure is highly sensitive, low cost of manufacture, but the limited pressure that can bear, piston structure displacement is large, but at the bottom of sensitivity.
Summary of the invention
The object of the invention is to there are the problems referred to above for existing technology, propose a kind of pressure regulator valve of highly sensitive, pressure stability.
Object of the present invention realizes by following technical proposal: a kind of pressure regulator valve, comprise base and the inner shell being provided with regulator, base offers the water intake, water outlet and the opening that are interconnected, the bottom of shell to be located on opening and sealed open, it is characterized in that, also comprise:
Black box, is arranged in opening, and the internal surface of black box and opening is fitted and sealed water outlet, the side of black box offers some osculums, osculum is all communicated with water outlet, and the bottom surface of black box offers via, and via is communicated with water intake;
Depression bar, depression bar one end is connected with regulator, and the other end inserts also by regulator shutoff via in black box, and water flow energy jack-up depression bar also flows into water outlet by osculum.
In above-mentioned a kind of pressure regulator valve, described black box comprises rubber ring, pressure ring and seal ring, rubber ring and seal ring lay respectively at the two ends of black box, via is opened on rubber ring, rubber ring is arranged on open bottom, osculum is opened on pressure ring, and pressure ring and seal ring are all arranged with O shape circle, and the crush seal of O shape circle is on the internal surface of base.
In above-mentioned a kind of pressure regulator valve, the longitudinal section of described pressure ring is in the convex shape stood upside down, be divided into relief portion and guide portion, guide portion is squeezed on rubber ring, rubber ring is recessed to form support slot, be provided with support between relief portion and rubber ring, support one end is resisted against the bottom of support slot, and the other end is resisted against in relief portion.
In above-mentioned a kind of pressure regulator valve, described regulator comprises the level pressure assembly being arranged on housing top end and the spring assembly installed in the enclosure, one end sealed open of spring assembly, and level pressure assembly inserts housing top end and is pushed against on the other end of spring assembly.
In above-mentioned a kind of pressure regulator valve, the end face of described base protrudes and forms mounting groove, leather cup seat is installed in mounting groove, leather cup cover for seat is located on depression bar, the outer of leather cup seat extends to form supporting portion vertically upward, and spring assembly comprises spring, be arranged on the spring seat of spring one end and be arranged on the leather cup of the spring the other end, cup packing mounting groove, the sealed department that the outer of leather cup is protruding upward, sealed department is located on supporting portion.
In above-mentioned a kind of pressure regulator valve, described leather cup offers the fixed hole with open-ended coaxial line, the outer formation stationary platen protruding upward of fixed hole, stationary platen to be provided with and cap, depression bar insert fixed hole and be spirally connected into and cap.
In above-mentioned a kind of pressure regulator valve, described leather cup seat protrudes along fixed hole axis and forms fixing part, and fixing part is resisted against on seal ring, depression bar outer surface protrudes and forms support rim, support rim outer surface protrudes and forms back-up ring, back-up ring diameter is greater than fixed hole diameter.
In above-mentioned a kind of pressure regulator valve, have cavity, the upper surface of leather cup seat offers guide hole between described leather cup seat and leather cup, guide hole is communicated with cavity and water outlet.
In above-mentioned a kind of pressure regulator valve, the bottom of described mounting groove offers circular groove, and circular groove is communicated with guide hole.
In above-mentioned a kind of pressure regulator valve, described level pressure assembly comprises bolt, and bolt vertically inserts housing top end and is squeezed on spring seat, and the other end protrudes housing top end and is provided with nut.
Compared with prior art, the present invention has the following advantages:
1, in the present invention, pressure rod structure is used to replace piston of the prior art or diaphragm structure, current enter from water intake, after overcoming the power that regulator is applied on depression bar, jack-up depression bar, and then current enter the gap between depression bar and black box, and flow out water outlet by osculum, in this structure, depression bar moves linearly along the axial direction of opening in mobile cavity, depression bar not only has the large advantage of piston structure displacement, also there is the advantage that diaphragm structure is highly sensitive, in the course of the work, depression bar can ensure the stability of displacement, improve pressure regulation accuracy and the pressure regulation sensitivity of product.
2, in the present invention, black box is fitted on the internal surface of opening, to seal water outlet, the side of black box offers osculum, osculum is communicated with water outlet, the bottom surface of black box is resisted against the bottom of opening, the bottom surface of black box offers via, via is communicated with water intake, depression bar passes through regulator shutoff via after inserting black box, current overcome regulator and are applied to power on depression bar, promote depression bar to move axially along opening in mobile cavity, current enter the gap between depression bar and black box by water intake, and enter water outlet by the osculum on pressure ring, and then outflow valve body, in this structure, black box design is unique, novel, regulator and depression bar directly contact and are applied on current, water outlet reflects rapidly effect of regulator, improve the sensitivity of product.
3, in the present invention, cavity is had between leather cup seat and leather cup, to part water inevitably be had to flow in cavity when flowing in the gap of current between depression bar and black box, the upper surface of leather cup seat offers guide hole, guide hole is communicated with cavity and water outlet, and after the work of guarantee being completed like this, the water in mobile cavity flows out valve body, reduce the ponding in valve body, prevent because valve body internal water accumulation causes the problem that the working life of product reduces and pressure regulation is unstable, blunt.
Accompanying drawing explanation
Fig. 1 is the structural representation of pressure regulator valve.
Fig. 2 is the structural representation of black box.
Fig. 3 is the partial enlarged drawing in Fig. 1.
In figure, 1, base; 11, water intake; 12, water outlet; 13, opening; 14, black box; 141, seal ring; 142, pressure ring; 142a, relief portion; 142b, guide portion; 142c, osculum; 143, rubber ring; 143a, support slot; 143b, via; 144, O shape circle; 145, support; 15, mounting groove; 151, circular groove; 16, leather cup seat; 161, supporting portion; 162, fixing part; 163, guide hole; 17, depression bar; 171, support protrusion; 172, back-up ring; 18, cavity; 2, shell; 21, regulator; 211, spring; 212, spring seat; 213, leather cup; 213a, sealed department; 213b, fixed hole; 213c, stationary platen; 214 and cap; 215, level pressure assembly; 215a, bolt; 215b, nut; 22, joint.
Embodiment
Be below specific embodiments of the invention and by reference to the accompanying drawings, technological scheme of the present invention is further described, but the present invention be not limited to these embodiments.
As depicted in figs. 1 and 2, this pressure regulator valve comprises base and the inner shell being provided with regulator, the longitudinal section of base is in " T " font, base offers the water intake, water outlet and the opening that are interconnected, opening and water intake all with base coaxial line, the lower edge of shell extends to form stair-stepping joint along vertical axis direction, joint to be located on opening and sealed open, chassis interior is provided with depression bar, and in the insertion opening of depression bar one end, the other end is connected on regulator.
As depicted in figs. 1 and 2, regulator comprises the level pressure assembly being arranged on housing top end and the spring assembly installed in the enclosure, spring assembly comprises spring seat, the leather cup of spring and sealed open, spring one end is resisted against on spring seat, the other end is resisted against on leather cup, level pressure assembly comprises bolt, bolt one end is vertically inserted from housing top end and is squeezed in spring seat, the other end is bolted with nut and protrudes housing top end, after loose nut, turning bolt regulates the power be squeezed on spring seat to carry out the extending amount of control spring seat, and then the decrement of control spring, thus reach the object of control action to the power on depression bar.
As depicted in figs. 1 and 2, leather cup offers the fixed hole with leather cup coaxial line, the interior also jack-up leather cup of fixed hole is inserted on depression bar top, the outer formation stationary platen protruding upward of fixed hole, stationary platen is provided with columniform and cap, depression bar insert fixed hole and be spirally connected into and cap, the sealed department of outer formation protruding upward " n " font of leather cup, and the lower of cap extends along along vertical and cap axial direction and be resisted against on sealed department.
As depicted in figs. 1 and 2, the upper surface of leather cup seat protrudes and is formed with the fixing part with fixed hole coaxial line, depression bar outer surface protrudes and forms support rim, support rim protrudes and forms back-up ring, the diameter of back-up ring is greater than the diameter of fixed hole and fixing part, cavity is formed between leather cup and leather cup seat, depression bar moves axially in the space of cavity, this vibrational power flow has support rim, the power institute bending that the anti-Sealing shield ring of energy is applied to by regulator on leather cup because of insufficient strength, reduces the voltage regulation result of regulator.
The outer of leather cup seat is protruded vertically upward and is formed supporting portion, supporting portion to be inserted in sealed department and is resisted against the bottom of sealed department, further raising leather cup is to the sealing effect of opening, prevent current from entering enclosure, and causing the pressure on leather cup and institute, to survey data inconsistent, the pressure regulator valve caused is difficult to setting and arrives a certain pressure.
As depicted in figs. 1 and 2, to seal water outlet on the internal surface that black box is fitted in opening, the side of black box offers osculum, osculum is for being communicated with water outlet, the axis of osculum is mutually vertical with the axis of opening, the bottom of black box is fitted in the bottom of opening, the bottom of black box offers via, via is for being communicated with water intake, the top of black box is resisted against on fixing part, black box comprises rubber ring, pressure ring and seal ring, rubber ring and seal ring are all cylindrical and be positioned at the two ends of black box, rubber ring and seal ring are all fitted with the internal surface of opening, via is opened on rubber ring, depression bar to be squeezed on rubber ring through seal ring and pressure ring and to seal and conduct hole, and then be sealed into the mouth of a river.
As depicted in figs. 1 and 2, rubber ring and seal ring and opening internal surface are fitted, water outlet is sealed after laminating, and on pressure ring and seal ring, be all arranged with O shape circle, O shape circle lays respectively at the both sides of water outlet, O shape circle also can seal water outlet after fitting with opening internal surface, and two-layer sealing configuration effectively raises the sealing of product, and then improves the stability of product.
As depicted in figs. 1 and 2, the longitudinal section of pressure ring is in the convex shape stood upside down, pressure ring lower end is squeezed on rubber ring, pressure ring upper end is squeezed in the lower surface of seal ring, pressure ring is divided into relief portion and guide portion, on the upper surface that guide portion is squeezed in rubber ring and and have gap between opening internal surface, relief portion is fitted on opening internal surface, O shape snare is located in relief portion, the support of tubulose is installed between relief portion and rubber ring, support casing is located on guide portion, the upper surface of rubber ring is recessed to form mounting groove, the lower end abutment of support is in the bottom of mounting groove, the upper end of support is squeezed in relief portion.
In product work process, current overcome regulator and are applied to power on depression bar, promote depression bar to move axially along opening, current enter the gap between depression bar and black box by via and water intake, and enter water outlet by the osculum on pressure ring, and then outflow valve body, in this process, because have cavity between leather cup seat and leather cup, to part water inevitably be had to flow in cavity when flowing in the gap of current between depression bar and black box, so in this structure, the upper surface of leather cup seat offers guide hole, guide hole Through-cavity and water outlet, and circular groove is offered on the bottom of mounting groove, circular groove is communicated with guide hole, after like this work of guarantee being completed, water between leather cup and leather cup seat in cavity flows out valve body, reduce the ponding in valve body, prevent because valve body internal water accumulation causes reduce the working life of product and pressure regulation is unstable, blunt problem.
As depicted in figs. 1 and 2, water intake and water outlet have diameter outside to inside to reduce all gradually, the diameter of water intake reduces gradually, when current are certain, increase hydraulic pressure, prevent because hydraulic pressure do not overcome not regulator to the situation of pressure, and the diameter of water outlet is set to become large gradually, meet the principle retaining decompression, can prevent the pipeline being arranged on water outlet from coming off because of water impact.
This pressure regulator valve in an initial condition, comprise the water intake offered and be interconnected, the base of water outlet and opening and the inner shell being provided with regulator, the bottom of shell be located on opening, the longitudinal section of base is in " T " font, opening and water intake and base coaxial line, in opening, depression bar is installed, be sealed into the mouth of a river in the insertion opening of depression bar one end, the other end protrudes base top surface and is squeezed on regulator, gap is had between depression bar and opening internal surface, depression bar is arranged with columniform black box, black box and opening internal surface fit to seal water outlet, the side of black box offers osculum, osculum is communicated with water outlet, the bottom surface of black box offers via, via is communicated with water intake, depression bar to insert in black box and seals and conducts hole, current flow to from water intake, after overcoming the power that regulator is applied on depression bar, flow into the cavity between depression bar and black box, and flow out water outlet by osculum.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (10)
1. a pressure regulator valve, comprises base and the inner shell being provided with regulator, base offers the water intake, water outlet and the opening that are interconnected, and the bottom of shell to be located on opening and sealed open, it is characterized in that, also comprises:
Black box, is arranged in opening, and the internal surface of black box and opening is fitted and sealed water outlet, the side of black box offers some osculums, osculum is all communicated with water outlet, and the bottom surface of black box offers via, and via is communicated with water intake;
Depression bar, depression bar one end is connected with regulator, and the other end inserts also by regulator shutoff via in black box, and water flow energy jack-up depression bar also flows into water outlet by osculum.
2. a kind of pressure regulator valve according to claim 1, it is characterized in that, described black box comprises rubber ring, pressure ring and seal ring, rubber ring and seal ring lay respectively at the two ends of black box, via is opened on rubber ring, and rubber ring is arranged on open bottom, and osculum is opened on pressure ring, pressure ring and seal ring are all arranged with O shape circle, and the crush seal of O shape circle is on the internal surface of base.
3. a kind of pressure regulator valve according to claim 1 and 2, it is characterized in that, the longitudinal section of described pressure ring is in the convex shape stood upside down, be divided into relief portion and guide portion, guide portion is squeezed on rubber ring, and rubber ring is recessed to form support slot, is provided with support between relief portion and rubber ring, support one end is resisted against the bottom of support slot, and the other end is resisted against in relief portion.
4. a kind of pressure regulator valve according to claim 1 and 2, it is characterized in that, described regulator comprises the level pressure assembly being arranged on housing top end and the spring assembly installed in the enclosure, one end sealed open of spring assembly, level pressure assembly inserts housing top end and is pushed against on the other end of spring assembly.
5. a kind of pressure regulator valve according to claim 1 and 2, it is characterized in that, the end face of described base protrudes and forms mounting groove, be provided with leather cup seat in mounting groove, leather cup cover for seat is located on depression bar, and the outer of leather cup seat extends to form supporting portion vertically upward, spring assembly comprises spring, be arranged on the spring seat of spring one end and be arranged on the leather cup of the spring the other end, cup packing mounting groove, the sealed department that the outer of leather cup is protruding upward, sealed department is located on supporting portion.
6. a kind of pressure regulator valve according to claim 5, is characterized in that, described leather cup offers the fixed hole with open-ended coaxial line, the outer formation stationary platen protruding upward of fixed hole, stationary platen is provided with and cap, depression bar insert fixed hole and be spirally connected into and cap.
7. a kind of pressure regulator valve according to claim 6, it is characterized in that, described leather cup seat protrudes along fixed hole axis and forms fixing part, fixing part is resisted against on seal ring, depression bar outer surface protrudes and forms support rim, support rim outer surface protrudes and forms back-up ring, back-up ring diameter is greater than fixed hole diameter.
8. a kind of pressure regulator valve according to claim 5, is characterized in that, has cavity, the upper surface of leather cup seat offers guide hole between described leather cup seat and leather cup, and guide hole is communicated with cavity and water outlet.
9. a kind of pressure regulator valve according to claim 8, is characterized in that, the bottom of described mounting groove offers circular groove, and circular groove is communicated with guide hole.
10. a kind of pressure regulator valve according to claim 4, is characterized in that, described level pressure assembly comprises bolt, and bolt vertically inserts housing top end and is squeezed on spring seat, and the other end protrudes housing top end and is provided with nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510002373.7A CN104565463A (en) | 2015-01-05 | 2015-01-05 | Pressure regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510002373.7A CN104565463A (en) | 2015-01-05 | 2015-01-05 | Pressure regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104565463A true CN104565463A (en) | 2015-04-29 |
Family
ID=53082206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510002373.7A Pending CN104565463A (en) | 2015-01-05 | 2015-01-05 | Pressure regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104565463A (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2239553A (en) * | 1989-11-14 | 1991-07-03 | Hitachi Metals Ltd | Piezoelectric valve control device |
| EP0805294A1 (en) * | 1996-04-30 | 1997-11-05 | Dorot Valve Manufacturers | Multi purpose valve |
| WO2000065265A1 (en) * | 1999-04-27 | 2000-11-02 | Ligh J Yen | Diaphragm actuated pressure relief valve with pressure balanced outlet and fail-safe operation |
| JP2008267558A (en) * | 2007-04-24 | 2008-11-06 | Keihin Corp | Pressure reducing valve |
| CN201651474U (en) * | 2010-03-22 | 2010-11-24 | 广东万和新电气股份有限公司 | Constant pressure valve |
| CN201731134U (en) * | 2010-07-07 | 2011-02-02 | 浙江瑞格铜业有限公司 | Pressure reducing valve |
| CN102125706A (en) * | 2011-01-27 | 2011-07-20 | 重庆山外山科技有限公司 | Self reset pressure relief valve for hemodialysis |
| CN102313052A (en) * | 2011-08-17 | 2012-01-11 | 永一阀门集团有限公司 | Built-in pilot operated safety valve |
| CN102425693A (en) * | 2011-08-19 | 2012-04-25 | 浙江盾安阀门有限公司 | Adjustable high-flexibility low-pressure and stable-pressure pressure reducing valve |
| CN202209460U (en) * | 2011-09-09 | 2012-05-02 | 西麦克阀门制造有限公司 | Angle and direct-acting pressure relief valve |
| CN202215812U (en) * | 2011-08-29 | 2012-05-09 | 福建海洋铜业有限公司 | Novel reducing valve |
| CN102620017A (en) * | 2012-03-29 | 2012-08-01 | 天正阀门有限公司 | High-pressure electromagnetic pneumatic-control decompression valve |
| CN204062048U (en) * | 2014-07-29 | 2014-12-31 | 四川弗瑞希燃气设备有限公司 | The low-temperature safety valve of import band filtrating equipment |
| CN204387422U (en) * | 2015-01-05 | 2015-06-10 | 宁波耀峰液压电器有限公司 | A kind of pressure regulator valve |
-
2015
- 2015-01-05 CN CN201510002373.7A patent/CN104565463A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2239553A (en) * | 1989-11-14 | 1991-07-03 | Hitachi Metals Ltd | Piezoelectric valve control device |
| EP0805294A1 (en) * | 1996-04-30 | 1997-11-05 | Dorot Valve Manufacturers | Multi purpose valve |
| WO2000065265A1 (en) * | 1999-04-27 | 2000-11-02 | Ligh J Yen | Diaphragm actuated pressure relief valve with pressure balanced outlet and fail-safe operation |
| JP2008267558A (en) * | 2007-04-24 | 2008-11-06 | Keihin Corp | Pressure reducing valve |
| CN201651474U (en) * | 2010-03-22 | 2010-11-24 | 广东万和新电气股份有限公司 | Constant pressure valve |
| CN201731134U (en) * | 2010-07-07 | 2011-02-02 | 浙江瑞格铜业有限公司 | Pressure reducing valve |
| CN102125706A (en) * | 2011-01-27 | 2011-07-20 | 重庆山外山科技有限公司 | Self reset pressure relief valve for hemodialysis |
| CN102313052A (en) * | 2011-08-17 | 2012-01-11 | 永一阀门集团有限公司 | Built-in pilot operated safety valve |
| CN102425693A (en) * | 2011-08-19 | 2012-04-25 | 浙江盾安阀门有限公司 | Adjustable high-flexibility low-pressure and stable-pressure pressure reducing valve |
| CN202215812U (en) * | 2011-08-29 | 2012-05-09 | 福建海洋铜业有限公司 | Novel reducing valve |
| CN202209460U (en) * | 2011-09-09 | 2012-05-02 | 西麦克阀门制造有限公司 | Angle and direct-acting pressure relief valve |
| CN102620017A (en) * | 2012-03-29 | 2012-08-01 | 天正阀门有限公司 | High-pressure electromagnetic pneumatic-control decompression valve |
| CN204062048U (en) * | 2014-07-29 | 2014-12-31 | 四川弗瑞希燃气设备有限公司 | The low-temperature safety valve of import band filtrating equipment |
| CN204387422U (en) * | 2015-01-05 | 2015-06-10 | 宁波耀峰液压电器有限公司 | A kind of pressure regulator valve |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150429 |