CN101275487B - Explosion-proof valve - Google Patents
Explosion-proof valve Download PDFInfo
- Publication number
- CN101275487B CN101275487B CN2008100613217A CN200810061321A CN101275487B CN 101275487 B CN101275487 B CN 101275487B CN 2008100613217 A CN2008100613217 A CN 2008100613217A CN 200810061321 A CN200810061321 A CN 200810061321A CN 101275487 B CN101275487 B CN 101275487B
- Authority
- CN
- China
- Prior art keywords
- flame
- retardant device
- explosion
- retardant
- valve
- 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.)
- Active
Links
- 239000003063 flame retardant Substances 0.000 claims abstract description 112
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 91
- 230000000694 effects Effects 0.000 claims description 9
- 238000005452 bending Methods 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000008033 biological extinction Effects 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 238000003197 gene knockdown Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000386 athletic effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Landscapes
- Check Valves (AREA)
Abstract
The invention provides an explosion-proof valve, belonging to the field of mechanical technology. The invention solves the problem that a current explosion-proof valve can not extinguish flame completely in the explosion-proof valve. The explosion-proof valve comprises a panel, a base plate and an inner flame retardant device, which form a valve cavity provided with a valve plate forming a sealing space with the seat plate, a spring is arranged between the panel and the valve plate, and an outer flame retardant device is also fixed between the panel and the seat plate, both the outer flame retardant device and the inner flame retardant device are formed by alternatively stacking the front and the back of a plurality of circular sheets of the flame retardant devices, a plurality of channels communicating the valve cavity and the outside are formed by stacking the fronts of the sheets of the flame retardant devices, each channel is provided with at least two bends. The outer flame retardant device and the inner flame retardant device extend the flow route of flame and air flow, the explosion-proof valve has the advantages of safe use, good flame extinguishing property and long service life.
Description
Technical field
The invention belongs to field of mechanical technique, relate to a kind of explosion-proof valve.
Background technique
At present, athletic meeting owing to bent axle in the crank case of internal combustion engine causes the mist of oil pinking that crankcase is interior, thereby produce the flame of high pressure draught and high temperature, and explosion-proof valve is arranged on the casing of crankcase, can discharge the pressure of crankcase, in relieving pressure, can stop flame by also closing subsequently to stop air to enter.
Common explosion-proof valve such as Chinese patent application number are 200620040829.5 disclosed " a kind of explosion-proof valves ", its disclose valve seat, fixedly connected with valve seat and form the valve gap of valve pocket with valve seat, be pressed on valve block on the valve seat, and flame-retardant device by the spring in the valve pocket, flame-retardant device is sleeved on by annular flame-resistant sheet in the air-flow approach of valve flow and the fixed support between two annular flame-resistant sheets by two at least to be formed, the annular flame-resistant sheet is because the lath of tranverse air flow flow direction lamination is formed, and the lath inboard has ripple.The explosion-proof valve of this structure can not be completely with flame extinction in explosion-proof valve, the effect that the high pressure draught that blast is produced also weakens is undesirable.The structure of valve block is also unreasonable, and the seal ring to the valve block place causes damage easily.
In addition, as Chinese patent application number is 200620040757.4 disclosed " flow guide anti-explosion valves ", the structure of different and above-mentioned " a kind of explosion-proof valve " is to be provided with an air guide sleeve in flame-resistant sheet and the valve pocket, on air guide sleeve, offer pod apertures, on the air guide sleeve substrate guiding piece is set, guiding piece is positioned at the pod apertures side.This explosion-proof valve can make the comparatively even of air blast diversed hole dispersion, but flame can't be extinguished in explosion-proof valve fully.
Summary of the invention
The objective of the invention is to have above-mentioned problem at existing explosion-proof valve, provide a kind of safe in utilization, the knock down the flame performance is good, the explosion-proof valve of long service life.
Purpose of the present invention can realize by following technical proposal: a kind of explosion-proof valve, comprise the seat board of ring-type and the panel of fixing with seat board, panel and seat board be arranged in parallel and be fixed with interior flame-retardant device between panel and seat boards, panel, seat board and interior flame-retardant device are formed valve pocket, in valve pocket, be provided with and form the valve plate that seals with respect to the seat board activity and with seat board, withstand on spring on panel and the valve plate respectively being provided with two ends between panel and the valve plate, it is characterized in that, between panel and seat board, also be fixed with the outer flame-retardant device outside the flame-retardant device in being enclosed within, described outer flame-retardant device and interior flame-retardant device are alternately placed by some circular flame-retardant device sheet positive and negatives and the back that is layering is formed, front and the positive back that is superimposed at the flame-retardant device sheet form some connection valve pockets and extraneous passage, and every passage has twice bending at least.
When this explosion-proof valve is not worked,, the effect valve plate of spring forms sealing because withstanding on the seat board and with seat board; During work, valve plate is backed down, and the air-flow of hot flame and high pressure flows in the valve pocket along valve plate, and outer flame-retardant device and internal resistance burner have the function of the distance of flowing through that prolongs flame and air-flow.When hot flame is flowed through flame-retardant device, hot flame moves towards the positive and positive superimposed passage of flame-retardant device sheet, because bending repeatedly, flame extinction is in passage, stoped flame to leak by outer flame-retardant device and interior flame-retardant device, air-flow then is released because of the application of wave reflection technology.
In above-mentioned explosion-proof valve, the front of described flame-retardant device sheet has some raised lines, and it is uniform that described raised line is pressed circumferencial direction, and forms some circles on the flame-retardant device sheet, and the adjacent raised line mutual dislocation on the two adjacent rings is provided with.Form mazy passage by this structure, owing to be uniform setting, between two raised lines in each circle all is equally spaced gap, after adjacent raised line mutual dislocation on the two adjacent rings is provided with, raised line on the adjacent circle just keeps off the place ahead in two raised line gaps of Nei Yiquan, flame and air-flow from the gap by the back owing to can separate to both sides after being subjected to the stopping of raised line, form and expand, dam, expand again, dam again and weaken flame and air-flow, principle is analogized according to this, and flame and air-flow streamed from spacer ring.Can prolong the distance of flowing through of flame and air-flow according to the structure of this mutual dislocation.
In above-mentioned explosion-proof valve, the front of described flame-retardant device sheet is five circles by the raised line that circumferencial direction distributes.Through the proof of practice, the raised line that the front of flame-retardant device sheet distributes by circumferencial direction is that five circles can make flame bending five times, thoroughly makes flame extinction in passage.
In above-mentioned explosion-proof valve, the raised line of described flame-retardant device sheet is stamped to form to the front by the reverse side of flame-retardant device sheet.The production method of this raised line is easily the simplest, lowers the cost of making.
In above-mentioned explosion-proof valve, described interior flame-retardant device overcoat has a fire-retardant circle of netted internal layer.Flame is all broken up during in flame flow through fire-retardant circle.
In above-mentioned explosion-proof valve, described outer flame-retardant device overcoat has a fire-retardant circle in netted top layer.The fire-retardant circle in top layer can play the effect that stops foreign material to enter valve inner and beautify this explosion-proof valve.
Compared with prior art, this explosion-proof valve has following advantage:
1, this explosion-proof valve is integrated two groups of flame-retardant devices, two groups of fire-retardant circles repeat to close the guiding flame retarding construction, and be provided with the passage of bending in the flame-retardant device, the flame of high temperature and the air communication of high pressure cross passage because repeatedly bending and being weakened, when its by behind the interior flame-retardant device again by the fire-retardant circle of internal layer and outside during flame-retardant device, flame extinguishes fully in explosion-proof valve and weakens air pressure, the knock down the flame performance is good, practical safety.
2, flame-retardant device is made of the flame-retardant device sheet, can form the repeatedly passage of bending after front and front are superimposed, and can bend five times, makes flame flame-retardant device and interior flame-retardant device and the interior distance prolongation of the fire-retardant circle of internal layer outside, and the effect of knock down the flame is better.
3, at the diesel engine long-play or when breaking down, pressure and temperature in the crankcase raises, when surpassing specified cracking pressure, explosion-proof valve is opened pressure release rapidly automatically and is effectively stoped flame ejection valve body, simultaneously, greasy dirt repeatedly digests in valve after the throttling decomposition through labyrinth structure, can be along with air pressure is discharged.
Description of drawings
Fig. 1 is the structural representation of this explosion-proof valve when closing.
Structural representation when Fig. 2 is the unlatching of this explosion-proof valve.
Fig. 3 is the structural representation of the flame-retardant device sheet of this explosion-proof valve.
Among the figure, panel 1, seat board 2, valve plate 3, interior flame-retardant device 4, outer flame-retardant device 5, raised line 51, the fire-retardant circle 6 of internal layer, bolt 7, pad 8, flame-retardant device sheet 9, spring 10, seal ring 11, pressing plate 12, the fire-retardant circle 13 in top layer, screw 14, valve pocket 15.
Embodiment
Below be specific embodiments of the invention and in conjunction with the accompanying drawings, technological scheme of the present invention is further described, but the present invention be not limited to these embodiments.
Be applied on the crankcase as Fig. 1, Fig. 2 and this explosion-proof valve of Fig. 3, discharge high pressure draught and the hot flame that blast produces when being used for blasting in crankcase inside, discharging simultaneously, pressure is weakened and with flame extinction in explosion-proof valve, close subsequently to stop air to enter.This explosion-proof valve is by comprising that panel 1, seat board 2, valve plate 3, interior flame-retardant device 4, outer flame-retardant device 5, the fire-retardant circle 6 of internal layer and the fire-retardant circle 13 in top layer etc. constitute.
Specifically, seat board 2 is a ring-type, can be connected on the crankcase by seat board 2, panel 1 is discoid, seat board 2 and panel 1 be arranged in parallel and between seat board 2 and panel 1, be provided with cylindraceous in flame-retardant device 4, interior flame-retardant device 4, panel 1 and seat board 2 form a valve pocket 15, and valve plate 3 and spring 10 are housed in valve pocket 15, and valve plate 3 can be with respect to seat board 2 activities in valve pocket 15.Spring 10 is a volute spring, and its big end withstands on valve plate 3, and small end withstands on the panel 1, under the effect of spring 10, valve plate 3 contacts and forms sealing with seat board 2, in order to increase sealing, be provided with seal ring 11 between valve plate 3 and seat board 2, sealing circle 11 is fixed on the seat board 2.Outside interior flame-retardant device 4, be with a fire-retardant circle 6 of internal layer, outside the fire-retardant circle 6 of internal layer, be with one cylindraceous outside flame-retardant device 5, the internal diameter of outer flame-retardant device 5 makes and leaves the space between the two greater than the external diameter of internal layer flame-retardant device 6.Six roots of sensation bolt 7 passes panel 1, outer flame-retardant device 5 backs and seat board 2 and is connected by screw thread, and along with tightening of bolt 7, panel 1 and seat board 2 are fixed these outer flame-retardant devices 5.Interior flame-retardant device 4 is fixed on the seat board 2 by pressing plate 12, and six screws 14 are set on pressing plate 12, tighten can compress behind the screw 14 in flame-retardant device 4 flame-retardant device sheets 9.Interior flame-retardant device 4 and outside all be provided with mazy passage in the flame-retardant device 5, valve pocket 15 is connected with the external world.Interior flame-retardant device 4 is outer to be with a fire-retardant circle 6 of netted internal layer, like this, flame is all broken up during through the fire-retardant circle 6 of internal layer in flame flow.
Interior flame-retardant device 4 and outer flame-retardant device 5 be by flame-retardant device sheet 9 formations that is layering, its stacked system be positive and negative alternately placement superpose.The front of flame-retardant device sheet 9 is provided with raised line 51, and it is uniform that these raised lines 51 are pressed circumferencial direction, and forms five circles, the adjacent raised line 51 mutual dislocation settings on the two adjacent rings on flame-retardant device sheet 9.Front and the positive back that is superimposed at flame-retardant device sheet 9 form some connection valve pockets and extraneous passage, and every passage just has five bendings.Interior is first lap, all there is the gap between per two adjacent raised lines 51 in this first lap, after being superimposed, positive and front forms passage, and the raised line 51 on adjacent second circle just blocks the place ahead of passage, flame and air-flow from the gap by the back owing to be subjected to can separately flowing through to both sides after the stopping of raised line 51 from the gap of second circle.According to the structure of this mutual dislocation, the positive phase poststack of adjacent two flame-retardant device sheets is just formed mazy passage, can prolong the distance of flowing through of flame and air-flow.The number of turns of the raised line 51 of the flame-retardant device sheet 9 of flame-retardant device 5 is three circles.The raised line 51 of flame-retardant device sheet 9 is stamped to form to the front by the reverse side of flame-retardant device sheet 9.The production method of this raised line 51 is easily the simplest, lowers the cost of making.Outer flame-retardant device 5 is outer to be with a fire-retardant circle 13 in netted top layer, enters in the valve and makes this explosion-proof valve have more aesthetic feeling to prevent foreign material.
When this explosion-proof valve is not worked,, the effect valve plate 3 of spring 10 forms sealing because withstanding on the seat board 2 and with seat board 2; During work, valve plate 3 is backed down, and the air-flow of hot flame and high pressure flows in the valve pocket 15 along valve plate 3, through interior flame-retardant device 4, the fire-retardant circle 6 of internal layer during again through outer flame-retardant device 5 flame all extinguish, the pressure of air-flow weakens.
Specific embodiment described herein only is that the present invention's spirit is illustrated.The technician of the technical field of the invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has used terms such as panel 1, seat board 2, valve plate 3, interior flame-retardant device 4, outer flame-retardant device 5, raised line 51, the fire-retardant circle 6 of internal layer, bolt 7, pad 8, flame-retardant device sheet 9, spring 10, seal ring 11, pressing plate 12, the fire-retardant circle 13 in top layer, screw 14, valve pocket 15 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present invention more easily; They are construed to any additional restriction all is contrary with spirit of the present invention.
Claims (5)
1. explosion-proof valve, comprise the seat board (2) of ring-type and the panel of fixing with seat board (2) (1), panel (1) and seat board (2) be arranged in parallel and be fixed with interior flame-retardant device (4) between panel (1) and seat boards (2), panel (1), seat board (2) and interior flame-retardant device (4) are formed valve pocket (15), in valve pocket (15), be provided with and form the valve plate (3) that seals with respect to seat board (2) activity and with seat board (2), withstand on spring (10) on panel (1) and the valve plate (3) respectively being provided with two ends between panel (1) and the valve plate (3), it is characterized in that, between panel (1) and seat board (2), also be fixed with the outer flame-retardant device (5) that is enclosed within outside the interior flame-retardant device (4), described outer flame-retardant device (5) and interior flame-retardant device (4) are alternately placed by some circular flame-retardant device sheet (9) positive and negatives and the back that is layering is formed, the back that is superimposed in the front of flame-retardant device sheet (9) and front forms some the passages that are communicated with the valve pockets (15) and the external world, every passage has twice bending at least, the front of described flame-retardant device sheet (9) has some raised lines (51), it is uniform that described raised line (51) is pressed circumferencial direction, and in the some circles of the last formation of flame-retardant device sheet (9), adjacent raised line (51) the mutual dislocation setting on the two adjacent rings.
2. a kind of explosion-proof valve according to claim 1 is characterized in that, the front of described flame-retardant device sheet (9) is five circles by the raised line (51) that circumferencial direction distributes.
3. a kind of explosion-proof valve according to claim 2 is characterized in that, the raised line (51) of described flame-retardant device sheet (9) is stamped to form to the front by the reverse side of flame-retardant device sheet (9).
4. a kind of explosion-proof valve according to claim 1 is characterized in that, the outer fire-retardant circle of netted internal layer (6) that is with of described interior flame-retardant device (4).
5. a kind of explosion-proof valve according to claim 1 is characterized in that, the outer fire-retardant circle in netted top layer (13) that is with of described outer flame-retardant device (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100613217A CN101275487B (en) | 2008-04-22 | 2008-04-22 | Explosion-proof valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100613217A CN101275487B (en) | 2008-04-22 | 2008-04-22 | Explosion-proof valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101275487A CN101275487A (en) | 2008-10-01 |
| CN101275487B true CN101275487B (en) | 2011-11-16 |
Family
ID=39995280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100613217A Active CN101275487B (en) | 2008-04-22 | 2008-04-22 | Explosion-proof valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101275487B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084048A (en) * | 2017-06-09 | 2017-08-22 | 宁波丰业机电制造有限公司 | A kind of resistance flame formula explosion-proof valve of fire-retardant device assembly and the application component |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852643B (en) * | 2012-08-24 | 2014-11-12 | 浙江工业大学 | Flame-retardant sheet for anti-explosion valve |
| CN102840029B (en) * | 2012-08-24 | 2015-01-28 | 浙江工业大学 | Flame-retarded explosion-proof valve |
| CN103711586A (en) * | 2013-12-27 | 2014-04-09 | 李潘宝 | Crankcase anti-explosion valve |
| CN103670709A (en) * | 2013-12-27 | 2014-03-26 | 李潘宝 | Explosion-proof valve of gas combustor |
| CN104033296A (en) * | 2014-06-13 | 2014-09-10 | 广东宾士动力科技有限公司 | Explosion-proof pressure-relief valve for gas engine |
| CN106677900B (en) * | 2017-02-15 | 2022-05-24 | 谢函 | Hedging type flame-retarding assembly and flame-retarding type explosion-proof valve |
| CN107559088B (en) * | 2017-09-25 | 2019-07-23 | 浙江工业大学 | A kind of crankcase flame retardant type explosion-proof valve |
| CN109373025A (en) * | 2018-11-02 | 2019-02-22 | 浙江工业大学之江学院 | A kind of concave flame retardant type explosion-proof valve |
| CN109432638A (en) * | 2018-11-02 | 2019-03-08 | 浙江工业大学之江学院 | A kind of modularization concave explosion-proof valve flame-resistant sheet |
| CN109441632A (en) * | 2018-11-02 | 2019-03-08 | 浙江工业大学之江学院 | A kind of modularization concave flame-retardant device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1251890A (en) * | 1998-10-21 | 2000-05-03 | 霍尔格阀门工厂有限公司 | Explosiveproof pressure reducing valve |
| CN1971006A (en) * | 2005-11-24 | 2007-05-30 | Mt.H控制阀株式会社 | Trap device for preventing flame of internal combustion engine |
| CN101050725A (en) * | 2006-04-03 | 2007-10-10 | 中国船舶重工集团公司第七一一研究所 | Flow guide anti-explosion valve |
| CN201258787Y (en) * | 2008-04-22 | 2009-06-17 | 李潘宝 | Explosion-proof valve |
-
2008
- 2008-04-22 CN CN2008100613217A patent/CN101275487B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1251890A (en) * | 1998-10-21 | 2000-05-03 | 霍尔格阀门工厂有限公司 | Explosiveproof pressure reducing valve |
| US6488048B2 (en) * | 1998-10-21 | 2002-12-03 | Hoerbiger Ventilwerke Gmbh | Explosion relief valve |
| CN1971006A (en) * | 2005-11-24 | 2007-05-30 | Mt.H控制阀株式会社 | Trap device for preventing flame of internal combustion engine |
| CN101050725A (en) * | 2006-04-03 | 2007-10-10 | 中国船舶重工集团公司第七一一研究所 | Flow guide anti-explosion valve |
| CN201258787Y (en) * | 2008-04-22 | 2009-06-17 | 李潘宝 | Explosion-proof valve |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平10-280975A 1998.10.20 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084048A (en) * | 2017-06-09 | 2017-08-22 | 宁波丰业机电制造有限公司 | A kind of resistance flame formula explosion-proof valve of fire-retardant device assembly and the application component |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101275487A (en) | 2008-10-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101275487B (en) | Explosion-proof valve | |
| CN210219330U (en) | Natural gas pipeline with flame arrester | |
| CN102840029B (en) | Flame-retarded explosion-proof valve | |
| WO2020015022A1 (en) | Buffer wall-flow-type multi-pore passage flame arrester | |
| CN201258787Y (en) | Explosion-proof valve | |
| CN106677900B (en) | Hedging type flame-retarding assembly and flame-retarding type explosion-proof valve | |
| CN101187336B (en) | Explosion-proof valve | |
| CN204024818U (en) | A kind of crankcase anti-explosion valve | |
| CN206111344U (en) | Fire -retardant ware subassembly and use this fire -retardant ware subassembly hinder explosion -proof valve of flame formula | |
| CN216252139U (en) | Explosion-proof protection device for cable joint | |
| CN201198787Y (en) | Explosion-proof valve | |
| CN202832791U (en) | Inflaming retarding type anti-explosion valve | |
| WO2011145810A3 (en) | Board-plank premixing burner port arrangement | |
| CN206555019U (en) | A kind of opposite-flushing type resistance flame component and resistance flame formula explosion-proof valve | |
| CN210583420U (en) | Compact fire retardant disc and assembly thereof | |
| CN207245860U (en) | A kind of crankcase anti-explosion valve fire-retardant ring | |
| CN105020070A (en) | Air inlet pipe anti-explosion valve of LNG-diesel oil dual fuel engine | |
| CN207393327U (en) | A kind of crankcase flame retardant type explosion-proof valve | |
| CN102852643B (en) | Flame-retardant sheet for anti-explosion valve | |
| CN210391144U (en) | Fireproof, waterproof and dustproof shading grid applied to train ventilation position | |
| CN210186279U (en) | Marsh gas flame arrester | |
| CN202832790U (en) | Anti-explosion valve inflaming retarding plate | |
| CN107559088B (en) | A kind of crankcase flame retardant type explosion-proof valve | |
| CN106870193A (en) | A kind of cylinder of motorcycle engine of energy-conservation | |
| CN201159103Y (en) | Flame-proof piece of explosion-proof valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220324 Address after: 317602 Room 102, building 4, Dacheng Li'ao Industrial Park, Kanmen street, Yuhuan City, Taizhou City, Zhejiang Province Patentee after: Taizhou Flow Control Co.,Ltd. Address before: 317602 No. 1-24 playground Road, Pearl River town, Zhejiang, Yuhuan County, Kanmen Patentee before: Li Panbao |