CN102278236B - Universal fuel gas mixing valve suitable for gas supply by different gas sources - Google Patents
Universal fuel gas mixing valve suitable for gas supply by different gas sources Download PDFInfo
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- CN102278236B CN102278236B CN201110143706XA CN201110143706A CN102278236B CN 102278236 B CN102278236 B CN 102278236B CN 201110143706X A CN201110143706X A CN 201110143706XA CN 201110143706 A CN201110143706 A CN 201110143706A CN 102278236 B CN102278236 B CN 102278236B
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- 239000007789 gas Substances 0.000 title abstract description 148
- 239000002737 fuel gas Substances 0.000 title abstract 2
- 239000000446 fuel Substances 0.000 claims abstract description 44
- 230000006837 decompression Effects 0.000 claims abstract description 30
- 238000007789 sealing Methods 0.000 claims description 6
- 230000000712 assembly Effects 0.000 abstract 5
- 238000000429 assembly Methods 0.000 abstract 5
- 239000012528 membrane Substances 0.000 abstract 2
- 238000007599 discharging Methods 0.000 description 3
- 238000010587 phase diagram Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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Abstract
The invention relates to a universal fuel gas mixing valve which consists of a cover plate, a lower valve body, a middle valve body, an upper valve body, a double-level connection type decompressor, switch membrane assemblies, air throttle assemblies and a multi-fuel switching shaft. Double-level decompression of the double-level connection decompressor is carried out so that the gas pressure of a gas source is constant, and the stability of power and the exhaust are greatly protected. The switch membrane assemblies are provided, thus the gas source is ensured not to generate leakage when the power does not work or has failure to cause the stop of a machine, and the starting performance is better; the air throttle assemblies and the multi-fuel switching shaft are provided, thus the gas can be supplied to the power through three paths, namely an idling hole, a main gas path, and a fuel gas-supplementing hole, and according to different requirements on the rotation speed of the power, the air throttle assemblies correspondingly and automatically regulate the gas inflows of the main gas path and the fuel gas-supplementing hole; and in addition, the gas supply amount is controlled through the rotation of the multi-fuel switching shaft according to fuel performance requirements.
Description
Technical field
The present invention relates to a kind of constituent elements of motor, be specifically related to the universal gas mixing valve of the suitable different source of the gas air feed that a kind of Small Universal power adopted, belong to the small-sized universal engine technical field.
Background technique
The source of the gas air feeder of the small-sized universal engine of existing technology generally adopts the decompression of single-stage Lever type, and this device only is provided with 1 main jet and comes direct air feed.Therefore, the source of the gas air feeder of configuration correspondence separately when using different sources of the gas (like rock gas, biogas etc.), the inconvenience that causes it to use.
Simultaneously, traditional source of the gas air feeder is not worked or is broken down to shut down at motor and can produce source of the gas when in time not closing source of the gas and leak; Have, when bleed pressure was unstable, engine power performance and discharging can't be effectively controlled again.
Therefore, the source of the gas air feeder is suitable for satisfying power performance under different sources of the gas and the probabilistic situation of pressure and discharge safety is the technical barrier of pendulum current dealer.
For solving the problems of the technologies described above, the necessary universal gas mixing valve that a kind of structure improved suitable different source of the gas air feed are provided is to overcome said defective of the prior art.
Summary of the invention
For addressing the above problem, the object of the present invention is to provide a kind of universal gas mixing valve of suitable different source of the gas air feed.
For realizing above-mentioned purpose; The technological scheme that the present invention takes is: a kind of universal gas mixing valve of suitable different source of the gas air feed, and it comprises that cover plate, valve lower body, bottom case, valve upper body, twin-stage join cotype decompressor, cut-off diaphragm assembly, air throttle component and many fuel transaxle; Wherein, said cover plate, valve lower body, bottom case and valve upper body are connected successively; Form one first host cavity between said cover plate and the valve lower body, said twin-stage joins the cotype decompressor and is positioned at first host cavity; Said cut-off diaphragm assembly is arranged between valve lower body and the bottom case, and between valve lower body and bottom case, forms the negative pressure gas circuit that one second host cavity and is communicated with second host cavity; Form a source of the gas reserve chamber on the said valve upper body, connect through a pipeline between this source of the gas reserve chamber and first host cavity; Said air throttle component and many fuel transaxle are installed on the valve upper body; This air throttle component is provided with idle hole and slotted hole; Be provided with tolerance control chamber and main amount gas circuit in said bottom case and valve upper body; Said many fuel transaxle is provided with the fuel tonifying Qi hole in some different apertures, and different sources of the gas are got in the valve upper body; Said air throttle component is rotated with respect to the valve upper body, and slotted hole is communicated with the tolerance control chamber with main amount gas circuit, and slotted hole is communicated with the tolerance control chamber with main amount gas circuit and fuel tonifying Qi hole.
The universal gas mixing valve of suitable different source of the gas air feed of the present invention further is set to: said valve lower body is provided with a gas source inlet; Said twin-stage joins the cotype decompressor and comprises the decompression head of an end and the decompression diaphragm of the relative the other end; Said decompression head is arranged in the gas source inlet and the gas source inlet and first host cavity is separated, and said decompression diaphragm arrangement is in first host cavity.
The universal gas mixing valve of suitable different source of the gas air feed of the present invention further is set to: said cut-off diaphragm assembly comprises the sealing strip of an end and the cut-off diaphragm of the relative the other end; Said sealing strip is positioned at source of the gas reserve chamber bottom and source of the gas reserve chamber and tolerance control chamber is separated; Said cut-off diaphragm is positioned at second host cavity.
The universal gas mixing valve of suitable different source of the gas air feed of the present invention further is set to: between said cover plate and decompression diaphragm, be provided with a relief spring; Between said valve lower body and cut-off diaphragm, be provided with a switch spring.
The universal gas mixing valve of suitable different source of the gas air feed of the present invention further is set to: said air throttle component comprises that further a throttle plate pin and is installed in the circular throttle blade on the throttle plate pin; Said idle hole is positioned at throttle plate pin central authorities, and it is communicated with the tolerance control chamber all the time; Said slotted hole is positioned at the bottom of throttle plate pin.
The universal gas mixing valve of suitable different source of the gas air feed of the present invention further is set to: said many fuel transaxle is provided with some positioning holes, is provided with the spring setting sleeve that can be connected in the positioning hole in said valve upper body.
The universal gas mixing valve of suitable different source of the gas air feed of the present invention also can be set to: said negative pressure gas circuit is built in bottom case and the valve upper body.
Compared with prior art, the present invention has following beneficial effect:
1. join the cotype decompressor through twin-stage is set, less demanding to the inlet air source pressure range, post-decompression stable gas pressure property is good, more compact structure, and the long service life of decompression diaphragm, air pressure is constant after the twin-stage decompression has better guarantee to kinetic stability and discharging;
2. through the cut-off diaphragm assembly is set, do not work or power breaks down to produce when shutting down and guarantees that source of the gas does not produce the Security of leakage at power (being motor), startability is better simultaneously;
3. pass through in the valve upper body and the built-in formation negative pressure of valve lower body gas circuit, thereby make assembling and easy to use, the compact structure performance is reliable;
4. through on throttle plate pin, being provided with idle hole and slotted hole simultaneously; Compact structure; Easy to process with low cost; It is more stable to set up idle hole power performance under idling mode, and this slotted hole is controlled main amount gas circuit and fuel tonifying Qi hole simultaneously automatically, and power performance under different operating modes and different fuel running state is more stable;
5. through many fuel transaxle is set, the time select fuel handling convenient, compact structure and Security are reliable;
6. clear in structure is well arranged, efficiently solves the stability that power moves under various operating modes and different fuel, and the Security of gas leakage has simultaneously obtained guarantee, and harmful tail gas that power is discharged has remarkable inhibitory action.
[description of drawings]
Fig. 1 is the three-dimensional exploded view of the universal gas mixing valve of suitable different source of the gas air feed of the present invention.
Fig. 2-the 1st, the sectional drawing of the universal gas mixing valve of suitable different source of the gas air feed of the present invention.
Fig. 2-the 2nd, among Fig. 2-1 along A to sectional drawing.
Fig. 2-the 3rd, among Fig. 2-2 along B to rotation profile.
Fig. 3-the 1st, the twin-stage of the universal gas mixing valve of suitable different source of the gas air feed of the present invention joins the structural representation of cotype decompressor.
Fig. 3-the 2nd, the schematic representation of the gas source low pressure air feed of the universal gas mixing valve of suitable different source of the gas air feed of the present invention.
Fig. 3-the 3rd, the schematic representation of the source of the gas medium pressure supply of the universal gas mixing valve of suitable different source of the gas air feed of the present invention.
Fig. 3-the 4th, the schematic representation of the source of the gas high-pressure air feed of the universal gas mixing valve of suitable different source of the gas air feed of the present invention.
Fig. 4-the 1st, the structural representation of the cut-off diaphragm assembly of the universal gas mixing valve of suitable different source of the gas air feed of the present invention.
Fig. 4-the 2nd, the schematic representation of universal gas mixing valve when power stops of suitable different source of the gas air feed of the present invention.
Fig. 4-the 3rd, the schematic representation of universal gas mixing valve when dynamic start of suitable different source of the gas air feed of the present invention.
Fig. 5-the 1st, the structural representation of the air throttle component of the universal gas mixing valve of suitable different source of the gas air feed of the present invention.
Fig. 5-the 2nd, the part sectioned view of the air throttle component of the universal gas mixing valve of suitable different source of the gas air feed of the present invention.
Fig. 5-the 3rd, the air throttle component half-open position figure of the universal gas mixing valve of suitable different source of the gas air feed of the present invention.
Fig. 5-the 4th, the air throttle component closed condition figure of the universal gas mixing valve of suitable different source of the gas air feed of the present invention.
Fig. 5-the 5th, the air throttle component full-gear figure of the universal gas mixing valve of suitable different source of the gas air feed of the present invention.
Fig. 6-the 1st, the structural representation of many fuel transaxle of the universal gas mixing valve of suitable different source of the gas air feed of the present invention.
Fig. 6-the 2nd, the phase diagram that need not tonifying Qi of the universal gas mixing valve of suitable different source of the gas air feed of the present invention.
Fig. 6-the 3rd, the few phase diagram of air compensation of the universal gas mixing valve of suitable different source of the gas air feed of the present invention.
Fig. 6-the 4th, the phase diagram that the air compensation of the universal gas mixing valve of suitable different source of the gas air feed of the present invention is many.
[embodiment]
See also shown in the Figure of description 1 to Fig. 6-4; The present invention is a kind of universal gas mixing valve; Its source of the gas that is suitable for comprises liquefied petroleum gas; Rock gas, sources of the gas such as biogas, it mainly is made up of members such as connecting cover plate 1, valve lower body 2, bottom case 3, valve upper body 4, twin-stage couplet cotype decompressor 5, cut-off diaphragm assembly 6, air throttle component 7 and many fuel transaxle 8 successively.Wherein, said cover plate 1, valve lower body 2, bottom case 3 are connected with valve upper body 4 from bottom to top successively, thereby form shell.
One end of said valve lower body 2 is provided with a gas source inlet 21.Form one first host cavity 22 between said cover plate 1 and the valve lower body 2.Said twin-stage joins cotype decompressor 5 and is positioned at first host cavity 22.This twin-stage joins cotype decompressor 5 and comprises the decompression 51 of an end and the decompression diaphragm 52 of the other end relatively; Said decompression 51 is arranged in the gas source inlet 21 and the gas source inlet 21 and first host cavity 22 is separated, and said decompression diaphragm 52 is arranged in first host cavity 22.Between said cover plate 1 and decompression diaphragm 52, be provided with a relief spring 53.
Shown in Figure of description 3-2 to 3-4; When source of the gas passes through gas source inlet 21 low pressure air feed; To form axial pressure greater than the lower end surface area poor owing to the upper-end surface area of decompression 51, under the effect of inlet air source pressure, makes twin-stage join that cotype decompressor 5 overcomes the elastic force of relief spring 53 and toward bottom offset, the big more twin-stage decompressor 5 of air inlet source pressure down displacement amount is also big more; That is to say and join cotype decompressor 5 upsides (decompression 51) by twin-stage to enter into the air pressure of downside (decompression diaphragm 52) just low more; Can play elementary decompression like this, under elementary post-decompression bleed pressure effect, make twin-stage join the further past again bottom offset of elastic force that cotype decompressor 5 downsides (decompression diaphragm 52) overcome relief spring 53, can play secondary decompression like this; Thereby realize twice decompression; And this twin-stage joins 5 pairs of inlet air source pressure ranges of cotype decompressor less demanding (highpressure is all applicable in low), and post-decompression stable gas pressure property is good, more compact structure; The long service life of decompression diaphragm 52, air pressure is constant after the twin-stage decompression has better guarantee to kinetic stability and discharging.Need explanation at this, what of arrow how many representative pressures of quantity or air inflow among the figure, shown in Fig. 3-4, when bleed pressure was excessive, twin-stage joined cotype decompressor 5 complete closed and source of the gas is got into.
Form a source of the gas reserve chamber 41 on the said valve upper body 4; Connect through a pipeline 42 between this source of the gas reserve chamber 41 and first host cavity 22; Low-pressure gas source through 5 decompressions of cascade cotype decompressor enters into source of the gas reserve chamber 41 through pipeline 42, makes the gas of low pressure be not easy to leak.
Between valve lower body 2 and bottom case 3, form the negative pressure gas circuit 62 that one second host cavity 61 and is communicated with second host cavity 61.Be provided with tolerance control chamber 31 and main amount gas circuit 43 in said bottom case 3 and valve upper body 4, also can on valve upper body 4, form said main amount gas circuit 43 separately.Said negative pressure gas circuit 62 is built in bottom case 3 and the valve upper body 4, rather than is arranged on outside the valve body, thereby makes assembling and easy to use, and the compact structure performance is reliable.This negative pressure gas circuit 62 is connected with the suction system (not shown) of power.
Said cut-off diaphragm assembly 6 is arranged between valve lower body 2 and the bottom case 3.This cut-off diaphragm assembly 6 comprises the sealing strip 63 of an end and the cut-off diaphragm 64 of the relative the other end.Said sealing strip 63 is positioned at source of the gas reserve chamber 41 bottoms and source of the gas reserve chamber 41 and tolerance control chamber 31 is separated; Said cut-off diaphragm 64 is positioned at second host cavity 61, between this cut-off diaphragm 64 and valve lower body 2, is provided with a switch spring 65.
Shown in Figure of description 4-2, when power quit work negative pressure gas circuit 62 no negative pressure, switch spring 65 was replaced cut-off diaphragm assembly 6 and is moved upward, and source of the gas reserve chamber 41 is sealed fully.Shown in Figure of description 4-3; When dynamic start, it produces certain suction, thereby makes negative pressure gas circuit 62 produce negative pressure; The elastic force that negative pressure overcomes switch spring 65 is communicated with source of the gas reserve chamber 41 and tolerance control chamber 31, thereby source of the gas is provided when giving dynamic start immediately.Therefore, do not work or power breaks down and guarantees that source of the gas does not produce leakage when produce shutting down at power through this cut-off diaphragm assembly 6 is set, startability is better simultaneously.And when because suction pressure when very big; At this moment; Twin-stage joins cotype decompressor 5 and closes fully and make no air pressure in the source of the gas reserve chamber 41; Open cut-off diaphragm 64 through negative pressure gas circuit 62 during dynamic start, the suction that leans on power simultaneously carries out air inlet through the suction of 41 pairs of decompressions of source of the gas reserve chamber diaphragm 52.
Said air throttle component 7 is installed on the valve upper body 4 with many fuel transaxle 8.This air throttle component 7 is provided with idle hole 71, slotted hole 72, throttle plate pin 73 and and is installed in the circular throttle blade 74 on the throttle plate pin 73.Said idle hole 71 is positioned at throttle plate pin 73 central authorities, and it is communicated with tolerance control chamber 31 all the time.Said slotted hole 72 is positioned at the bottom of throttle plate pin 72.
Said many fuel transaxle 8 is provided with the fuel tonifying Qi hole 81 in some different apertures; Its based on fuel performance requirement; Rotate many fuel transaxle 8 positions different sources of the gas is provided, different sources of the gas are got in the valve upper body 4 (can pass through less fuel tonifying Qi hole 81, aperture as using rock gas; Use biogas then need pass through bigger fuel tonifying Qi hole 81, aperture).On this many fuel transaxle 8, also be provided with some positioning holes 82, be provided with the spring setting sleeve 83 that can be connected in the positioning hole 82 in said valve upper body 4, many fuel transaxle 8 air compensations what lean on spring setting sleeve 83 to locate.Said air throttle component 7 is rotated with respect to valve upper body 4; Slotted hole 72 is communicated with tolerance control chamber 31 with main amount gas circuit 43; Slotted hole 72 is communicated with tolerance control chamber 31 with fuel tonifying Qi hole 81 with main amount gas circuit 43 simultaneously; The power air feed is had idle hole 71, main amount gas circuit 43, fuel tonifying Qi hole 81 three road air supply ducts, and along with the power speed demand is different, the corresponding air inflow of adjustment is automatically made in 7 pairs of main amount gas circuits 43 of air throttle component and fuel tonifying Qi hole 81.
To shown in the accompanying drawing 5-5, it has disclosed the different operating state of air throttle component 7 like Figure of description 5-2.Shown in accompanying drawing 5-2, it is the state of air throttle component 7 and main amount gas circuit 43, fuel tonifying Qi hole 81 half-open degree, realizes three road air feed; Shown in accompanying drawing 5-3, it is air throttle component 7 and main amount gas circuit 43, fuel tonifying Qi hole 81 closing state, and power is idling mode; Shown in accompanying drawing 5-3, it is the state of air throttle component 7 and main amount gas circuit 43, fuel tonifying Qi hole 81 standard-sized sheets.
To accompanying drawing 6-4, it has disclosed the different operating state of many fuel transaxle 8 like Figure of description 6-2.Shown in accompanying drawing 6-2, it is not for needing the state of tonifying Qi.Shown in accompanying drawing 6-3, it is the state of little tonifying Qi.Shown in accompanying drawing 6-4, it is the state of big tonifying Qi.
Like Figure of description 2-1 to accompanying drawing 2-3, accompanying drawing 5-2 to accompanying drawing 5-5 and accompanying drawing 6-2 to shown in the accompanying drawing 6-4, the air feed principle of this universal gas mixing valve is following:
1. when power is in idling mode, the source of the gas of tolerance control chamber 31 from the idle hole 71 on the air throttle component 7 directly enter into valve upper body 4 in, be the idling gas of the air feed of power idle running;
2. when rotating air throttle component 7, the source of the gas of tolerance control chamber 31 gets in the valve upper bodies 11 from the slotted hole 72 of air throttle component 7 radial direction, is the main gas circuit of the work of power running;
3. when the fuel tonifying Qi hole 81 of slotted hole 72 and many fuel transaxle 8 is communicated with, the gas circuit of tonifying Qi is provided for the work of power running;
During power running according to the running working conditions change; Arrangements for speed regulation on the power (not shown) make air throttle component 7 can do the rotation of radial direction; The slotted hole 72 of air throttle component 7 radial direction is along with the rotation of making radial direction; The slotted hole 72 of radial direction is also done corresponding variation with the Throughput in main amount gas circuit 43 and fuel tonifying Qi hole 81 respectively in other words, satisfies the air demand of demand under the different operating modes of power through this variation.
Above embodiment is merely the preferred embodiment of this creation, not in order to limiting this creation, any modification of being made within all spirit and principles in this creation, is equal to replacement, improvement etc., all should be included within the protection domain of this creation.
Claims (3)
1. a universal gas mixing valve that is suitable for different source of the gas air feed is characterized in that: comprise that cover plate, valve lower body, bottom case, valve upper body, twin-stage join cotype decompressor, cut-off diaphragm assembly, air throttle component and many fuel transaxle; Wherein, said cover plate, valve lower body, bottom case and valve upper body are connected successively; Form one first host cavity between said cover plate and the valve lower body, said twin-stage joins the cotype decompressor and is positioned at first host cavity; Said cut-off diaphragm assembly is arranged between valve lower body and the bottom case, and between valve lower body and bottom case, forms the negative pressure gas circuit that one second host cavity and is communicated with this second host cavity; Form a source of the gas reserve chamber on the said valve upper body, connect through a pipeline between this source of the gas reserve chamber and first host cavity; Said air throttle component and many fuel transaxle are installed on the valve upper body; This air throttle component is provided with idle hole and slotted hole; Be provided with tolerance control chamber and main amount gas circuit in said bottom case and valve upper body; Said many fuel transaxle is provided with the fuel tonifying Qi hole in some different apertures, and different sources of the gas are got in the valve upper body; Said air throttle component is rotated with respect to the valve upper body, and slotted hole is communicated with the tolerance control chamber with main amount gas circuit, and slotted hole is communicated with the tolerance control chamber with main amount gas circuit, fuel tonifying Qi hole; Said valve lower body is provided with a gas source inlet; Said twin-stage joins the cotype decompressor and comprises the decompression head of an end and the decompression diaphragm of the relative the other end; Said decompression head is arranged in the gas source inlet and the gas source inlet and first host cavity is separated, and its upper-end surface area is greater than the lower end surface area, and said decompression diaphragm arrangement is in first host cavity; Said cut-off diaphragm assembly comprises the sealing strip of an end and the cut-off diaphragm of the relative the other end; Said sealing strip is positioned at source of the gas reserve chamber bottom and source of the gas reserve chamber and tolerance control chamber is separated; Said cut-off diaphragm is positioned at second host cavity; Between said cover plate and decompression diaphragm, be provided with a relief spring; Between said valve lower body and cut-off diaphragm, be provided with a switch spring; Said air throttle component comprises that further a throttle plate pin and is installed in the circular throttle blade on the throttle plate pin; Said idle hole is positioned at throttle plate pin central authorities, and it is communicated with the tolerance control chamber all the time; Said slotted hole is positioned at the bottom of throttle plate pin.
2. the universal gas mixing valve of suitable different source of the gas air feed as claimed in claim 1 is characterized in that: said many fuel transaxle is provided with some positioning holes, is provided with the spring setting sleeve that can be connected in the positioning hole in said valve upper body.
3. the universal gas mixing valve of suitable different source of the gas air feed as claimed in claim 2 is characterized in that: said negative pressure gas circuit is built in bottom case and the valve upper body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110143706XA CN102278236B (en) | 2011-05-31 | 2011-05-31 | Universal fuel gas mixing valve suitable for gas supply by different gas sources |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110143706XA CN102278236B (en) | 2011-05-31 | 2011-05-31 | Universal fuel gas mixing valve suitable for gas supply by different gas sources |
Publications (2)
| Publication Number | Publication Date |
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| CN102278236A CN102278236A (en) | 2011-12-14 |
| CN102278236B true CN102278236B (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110143706XA Expired - Fee Related CN102278236B (en) | 2011-05-31 | 2011-05-31 | Universal fuel gas mixing valve suitable for gas supply by different gas sources |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104436333B (en) * | 2014-12-10 | 2016-08-17 | 上海威昂生物科技有限公司 | A kind of water-sealed drainage bottle is automatically adjusted negative pressure device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3425364A1 (en) * | 1984-07-10 | 1986-01-23 | Fritz Werner Industrie-Ausrüstungen GmbH, 6222 Geisenheim | Gas-air mixing unit |
| JPH01100357A (en) * | 1987-10-09 | 1989-04-18 | Kubota Ltd | Fuel supply device of gas engine |
| CN1715633A (en) * | 2004-06-29 | 2006-01-04 | 义乌市发电设备有限公司 | Gas mixing valve for gas burning engine |
| CN2830672Y (en) * | 2005-08-24 | 2006-10-25 | 上海晨昌动力科技有限公司 | Gas mixer for general small verticle shaft outputting gas combustion engine |
| CN201025161Y (en) * | 2007-04-29 | 2008-02-20 | 赵旭 | Voltage reduction and pressure adjuster |
| CN201280983Y (en) * | 2008-11-04 | 2009-07-29 | 深圳市金奇稀土电机有限公司 | Fuel conveying device for small-sized gas engine |
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Inventor after: Zhou Hongchao Inventor after: Li Xiaohua Inventor before: Zhou Hongchao |
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Effective date of registration: 20160204 Address after: 355000, No. 136, Center Street, brook town, Ningde City, Fujian, Fu'an Patentee after: Li Xiaohua Address before: 312000 Wang Jia Cun, 8-54 East Town, Yuecheng District, Zhejiang, Shaoxing Patentee before: Zhou Hongchao |
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