CN205574743U - A let out and explode device that is used for buggy storehouse to let out seam broken - Google Patents
A let out and explode device that is used for buggy storehouse to let out seam broken Download PDFInfo
- Publication number
- CN205574743U CN205574743U CN201620140265.6U CN201620140265U CN205574743U CN 205574743 U CN205574743 U CN 205574743U CN 201620140265 U CN201620140265 U CN 201620140265U CN 205574743 U CN205574743 U CN 205574743U
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- venting
- dust explosion
- sealed tank
- water sealed
- explosion
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Abstract
The utility model discloses a let out and explode device that is used for buggy storehouse to let out seam broken, including the water sealed tank, letting out and explode lid and guiding mechanism, wherein, seam broken department is being let out in the water sealed tank setting inboard cell wall, bottom surface and outside cell wall, the spatial structure and the shape of letting out the seam broken of water sealed tank suit, and wherein the external diameter of the inboard cell wall of water sealed tank is not less than the internal diameter of letting out the seam broken, letting out to explode to cover and being provided with the picture peg that is used for inserting the water sealed tank, the spatial structure of picture peg and the spatial structure of water sealed tank suit, and when letting out when exploding the lid and approximately establishing on the water sealed tank, in the picture peg inserts the water sealed tank, and the bottom of picture peg does not contact with the bottom surface of water sealed tank, guiding mechanism is used for leading to letting out the motion of exploding the lid to make the picture peg fall into in the water sealed tank. Utilize the utility model discloses let out and explode the device and when buggy storehouse internal pressure is too big, can opens automatically and let out the seam broken pressure release to let out to explode behind the pressure release and cover automatic re -setting, need not artifical red -tape operation.
Description
Technical field
This utility model relates to Coal dressing technical field, is specifically related to a kind of for Pulverized Coal Bin venting of dust explosion
The explosion venting device of mouth.
Background technology
During the coal machining and transform such as coal liquifaction, typically need first coal to be milled into coal dust, and
Coal dust is stored in Pulverized Coal Bin stand-by, to increase coal dust and other chemical reaction substance contacts area,
Accelerate response speed, improve conversion ratio.Typically there is explosivity due to coal dust, therefore in Pulverized Coal Bin
Top and side need to install explosion venting device additional, such as venting of dust explosion film, explosion relief door etc., reduce blast coverage,
Prevent blast from damaging the equipment such as Pulverized Coal Bin.The cardinal principle of venting of dust explosion is: at sealed shell of tank (such as coal dust
Storehouse) side and top offer multiple venting of dust explosion mouth, single venting of dust explosion open area is usually no more than 0.5m2,
Total explosion venting area and venting pressure is determined according to guide for pressure-relieving of dust explosion (GB/T15605-1995)；
Installing venting of dust explosion film or explosion relief door at each venting of dust explosion mouth, venting of dust explosion film is damaged by blast pressure and explosion relief door is subject to
Blast pressure is opened, and the two pressure bears pressure much smaller than the i.e. Pulverized Coal Bin of tank body.In Pulverized Coal Bin
During interior generation coal dust explosion, under blast pressure effect, venting of dust explosion mouth is opened, blast pressure in Pulverized Coal Bin
Being released, protection Pulverized Coal Bin is without damage, and prevents blast from expanding.
About explosion relief door, for the movable metallic door being arranged on venting of dust explosion mouth, it mostly is steel plate and makes.Logical
Often, the side of explosion relief door is fixed in Pulverized Coal Bin with door-hinge, at opposite side spring etc. to explosion relief door
Apply certain pressure, explosion relief door is withstood on venting of dust explosion mouth, and add at explosion relief door place closely connected with venting of dust explosion mouth
The dress sealing strip such as rubber, prevents coal dust pressure from backing down explosion relief door and revealing coal dust, prevent explosion relief door and
Both venting of dust explosion mouths are poorly sealed close and reveal coal dust.Additionally, be arranged on the explosion relief door at Pulverized Coal Bin top
Available own wt, is not required to add shock mount and withstand venting of dust explosion mouth.
About venting of dust explosion film, it is the relatively broad explosion venting device used in Pulverized Coal Bin at present, one
As be thin aluminum plate material, also have the sheet material of the materials such as asbestos.By flange, venting of dust explosion film can be fixed on
On venting of dust explosion mouth, the fail in compression when pressure is higher than certain value of venting of dust explosion film, thus reach venting of dust explosion effect.
Figures 1 and 2 show that a kind of traditional venting of dust explosion membrane structure, ＇ is generally circular for venting of dust explosion film 3, passes through
Venting of dust explosion film 3 ＇ is fixed together by ring flange 4 ＇ and flange screw 2 ＇ with venting of dust explosion mouth, prevents coal dust
Leakage of pulverized coal in storehouse, venting of dust explosion film 3 ＇ will be destroyed under a certain pressure.
The explosion venting device used at present is primarily present following deficiency:
1. during day-to-day operation, explosion relief door easily occurs poorly sealed, and coal dust is revealed and is difficult to effect a radical cure,
Pollute environment and impact produces.Explosion relief door needs closely connected venting of dust explosion mouth periphery, and with spring compression with opposing
Coal dust extruding and gas positive pressure in storehouse in Pulverized Coal Bin.For preventing coal dust oxidation blast or burning, in storehouse
The noble gases such as general perfusion nitrogen also maintain malleation.Spring is likely to occur fatigue phenomenon and causes sealing
Loosening, explosion venting device is complex.In actual moving process, the fluctuation of Pulverized Coal Bin internal gas pressure is very big,
Easily occurring at sealing loosening causes coal dust not stop to reveal.Further, since spring is applied on explosion relief door
Initial pressure very big, for ensureing venting of dust explosion effect, when venting of dust explosion, spring pressure should thoroughly be decontroled, and lets out
After quick-fried, explosion relief door can not be automatically switched off, and coal dust is revealed in a large number and is difficult to recover closed mode.
2. pressure fluctuations.When Pulverized Coal Bin internal pressure exceedes certain value, the support of venting of dust explosion film is badly entered
Row venting of dust explosion, causes coal dust to reveal in a large number and can not the most automatically recover, and needs artificial replacing venting of dust explosion film,
Add the labor intensity of workman, and maintenance efficiency is low, adds production cost.If venting of dust explosion
Film anti-pressure ability is too high, it is also possible to damage Pulverized Coal Bin.
3. after damaging due to venting of dust explosion film or after explosion relief door opens, need to be after in Pulverized Coal Bin, coal dust have been revealed
Venting of dust explosion film or explosion relief door can be reinstalled, extend the time continuing to come into operation of equipment, and
And coal dust amount of leakage is very big, considerably increase production cost.
Summary of the invention
In view of this, the utility model proposes a kind of explosion venting device for Pulverized Coal Bin venting of dust explosion mouth, pressure
Venting of dust explosion mouth pressure release can be automatically opened up when power is excessive, and automatically reset after pressure release, it is not necessary to human assistance
Operation.
The utility model proposes a kind of explosion venting device for Pulverized Coal Bin venting of dust explosion mouth, wherein, including water
Sealing groove, venting of dust explosion lid and guiding mechanism, wherein, water sealed tank is arranged at venting of dust explosion mouth, including inner side slot
Wall, bottom surface and outside cell wall, the space structure of water sealed tank adapts with the shape of venting of dust explosion mouth, wherein
Inside water sealed tank, the external diameter of cell wall is not less than the internal diameter of venting of dust explosion mouth；It is provided with for inserting on venting of dust explosion lid
The plate of water sealed tank, the space structure of plate adapts with the space structure of water sealed tank, when venting of dust explosion lid
Lid is when being located on water sealed tank, and plate inserts in water sealed tank, and the bottom of plate not with the end of water sealed tank
Face contacts；Guiding mechanism is for guiding, so that plate falls into water seal the motion of venting of dust explosion lid
In groove.
Preferably, wherein, described guiding mechanism is guide post, and guide post is vertically arranged in water sealed tank
Periphery, guide post is fixed on Pulverized Coal Bin shell through venting of dust explosion lid.
Preferably, wherein, described guiding mechanism is guide ring or guide pad, is arranged in water sealed tank
And/or on plate.
Preferably, wherein, described guiding mechanism is provided with lockable mechanism, for by venting of dust explosion cover lock
Only at predetermined altitude.
Preferably, wherein, when the external diameter of inner side cell wall is more than the internal diameter of venting of dust explosion mouth, venting of dust explosion lid
Having boss inside plate, the external diameter of boss is more than the internal diameter of venting of dust explosion mouth and is less than the interior of inner side cell wall
Footpath, the height of boss is more than the height of plate.
Preferably, wherein, venting of dust explosion lid is provided with on the contact surface on the cell wall top, inner side of water sealed tank
Sealing ring.
Preferably, also include arc venting of dust explosion guide pipe, for will be located in the venting of dust explosion mouth of Pulverized Coal Bin side
Be directed to vertically upward towards by horizontal direction.
Preferably, wherein, described arc venting of dust explosion guide pipe axis wherein and horizontal plane angle are 25 °
Place starts to be inclined upward to vertically upward.
Preferably, wherein, described venting of dust explosion mouth is circular venting of dust explosion mouth, and water sealed tank is circular U-type groove,
Plate is circular space structure.
Preferably, wherein, described venting of dust explosion mouth is rectangle venting of dust explosion mouth, and water sealed tank is square U-type groove,
Plate is square space structure.
The explosion venting device of this utility model embodiment is respectively adopted gravity-pressing and seals and water-seal principle,
Realize dual leak-tight closure；And use guider to add action of gravity recovery principle, it is achieved different
Releasing pressure automatically during often need of short duration pressure release, automatically resets rapidly after pressure release, seals also the most such as after reset
Just, prevent coal dust and protection gas from revealing in a large number.Explosion venting device structure of the present utility model is reliable, lets out
The key design parameters such as detonation pressure power can be actually needed calculating according to Pulverized Coal Bin and adjust, pressure release, venting of dust explosion spirit
Quick reliably, device lifetime is long.
Accompanying drawing explanation
Fig. 1 is the structural representation of tradition venting of dust explosion film.
Fig. 2 is the top view of Fig. 1.
Fig. 3 be this utility model one embodiment explosion venting device in venting of dust explosion lid rise structural representation.
Fig. 4 be this utility model one embodiment explosion venting device in the structural representation that falls of venting of dust explosion lid.
Fig. 5 be another embodiment of this utility model explosion venting device in venting of dust explosion lid rise structural representation
Figure.
Fig. 6 be another embodiment of this utility model explosion venting device in the structural representation that falls of venting of dust explosion lid
Figure.
Detailed description of the invention
Below in conjunction with accompanying drawing and specific embodiment, the technical solution of the utility model is carried out in detail
Describe.
Embodiment of the present utility model processes water sealed tank at venting of dust explosion mouth, and enters the structure of venting of dust explosion lid
Go special setting.Fig. 3 and Fig. 4 respectively illustrates state signal when venting of dust explosion lid rises and falls
Figure, the pressure in release Pulverized Coal Bin when venting of dust explosion lid rises, venting of dust explosion lid realizes Pulverized Coal Bin and seals when falling.
From the point of view of specifically, the explosion venting device of this utility model embodiment includes water sealed tank, venting of dust explosion lid and leads
To mechanism, water sealed tank is arranged at venting of dust explosion mouth, and the motion of venting of dust explosion lid is play the guiding role by guiding mechanism.
Owing to venting of dust explosion mouth is mostly circular, therefore below for the circular venting of dust explosion mouth at Pulverized Coal Bin top as a example by,
Water sealed tank, venting of dust explosion lid and the structure of guiding mechanism are described.
With reference to Fig. 3, water sealed tank 5 is circular U-type groove, including inner side cell wall 8 and outside cell wall 9,
The external diameter of inner side cell wall 8 is not less than the internal diameter of venting of dust explosion mouth, priming petock in water sealed tank 5 during work, useless
The liquid such as machine oil or noninflammability anti-icing fluid；It is provided with on venting of dust explosion lid 4 for inserting inserting of water sealed tank 5
Plate 7, plate 7 is also circular space structure, and the height of plate 7 is less than the degree of depth of water sealed tank 5, close
(such as Fig. 4) under envelope state, venting of dust explosion lid 4 lid is located on water sealed tank 5, and plate 7 inserts water sealed tank 5
In, venting of dust explosion lid 4 is pressed on the cell wall 8 of inner side and realizes sealing；Further, in the present embodiment, lead
Being the guide post 2 shown in Fig. 3 to mechanism, it is peripheral that it is vertically arranged in water sealed tank 5, guide post 2
Being fixed on Pulverized Coal Bin shell 1 through venting of dust explosion lid 4, effect is when venting of dust explosion lid 4 is along guide post 2
During lower slider, plate 7 can accurately fall in water sealed tank 5.It is noted here that plate 7 end
End does not contacts with water sealed tank 5 bottom surface, and the total weight of such Explosion-proof cap all acts on inner side cell wall 8
On, it is ensured that gravity-pressing effect.The height of inner side cell wall 8 is more than or equal to the height of outside cell wall 9.
Further, at guide post 2 top, limiting section 3 can be set, for example with spacing shapes such as nuts
Formula, limits the lifting heights of venting of dust explosion lid 4.Guide post 2 quantity should be not less than 3, guide post 2
Should there be enough rigidity, transverse link can be installed if desired at each guide post 2 top additional and respectively lead with fixing
To bar 2, keep stablizing of each guide post 2.
Further, guide post 2 top is it is contemplated that reload buffer spring, and spring housing is located at guide post 2
On, between limiting section 3 and venting of dust explosion lid 4, to guide post 2 during to alleviate venting of dust explosion lid 4 jack-up
The impact at top.
Further, it is also possible on guide post 2, arrange lockable mechanism, in order to venting of dust explosion lid 4 is locked
Only at predetermined altitude, as being provided for inserting the installing hole of fixing pin, fixing pin on guide post 2
Length more than the diameter of guide post 2, venting of dust explosion lid 4 can be fixed on the height of fixing pin after lifting,
Personnel are facilitated to enter Pulverized Coal Bin maintenance and inspection from venting of dust explosion mouth.
In other embodiments, such as guide post 2 need to be cancelled because of reasons such as installation sites, it is also contemplated that
Guiding mechanism (such as guide ring, guide pad etc.) is set in water sealed tank 5 and/or on plate 7, it is possible to
By controlling the gap between water sealed tank 5 and plate 7, it is ensured that when laying venting of dust explosion lid 4, plate 7
Accurately fall in water sealed tank 5, thus venting of dust explosion lid 4 can exact placement venting of dust explosion mouth central authorities.
Fig. 5 and Fig. 6 shows another embodiment of the present utility model, with Fig. 3 and Fig. 4 embodiment
Comparing, difference essentially consists in, the inner side cell wall 8 of Fig. 5 and Fig. 6 embodiment water sealed tank 5
(in Fig. 3 and Fig. 4 embodiment, the internal diameter of inner side cell wall 8 is equal to letting out more than the internal diameter of venting of dust explosion mouth for internal diameter
The internal diameter of seam broken), it also differ in that, inside the plate 7 of venting of dust explosion lid 4, there is cylindrical boss
10, the external diameter of boss 10 internal diameter more than venting of dust explosion mouth and the internal diameter less than inner side cell wall 8, boss 10
Height more than the height of plate 7.Then when venting of dust explosion lid 4 falls, boss 10 will cover at venting of dust explosion
On mouth, in plate 7 falls into water sealed tank 5 simultaneously, venting of dust explosion cause for gossip now seals.
This utility model is described, when venting of dust explosion mouth is other as a example by circular venting of dust explosion mouth above
During shape such as rectangle, water sealed tank 5 is no longer circular U-type groove, but has the side of four sections of notches
Shape U-type groove, adapts with the outer rim of rectangle venting of dust explosion mouth, and in like manner the plate 7 on venting of dust explosion lid is four
The space structure that wallboard surrounds, plate 7 falls in square U-type groove, and it is convex that boss 10 should be cube
Platform, covers on rectangle venting of dust explosion mouth, it is achieved Pulverized Coal Bin seals.
In this utility model embodiment, venting of dust explosion lid 4 is usually the metal materials such as iron and steel and makes.For
Guarantee sealing effectiveness, with the contact surface 6 on the inner side cell wall top of water sealed tank 5 bottom venting of dust explosion lid 4
Should be smooth, contact surface 6 can pad set by the material such as rubber, asbestos make sealing ring (or seal
Set), utilize venting of dust explosion lid 4 own wt to be compressed by sealing ring, prevent coal dust from overflowing.
Explosion venting device of the present utility model is described above as a example by the venting of dust explosion mouth at Pulverized Coal Bin top.Right
Venting of dust explosion mouth in Pulverized Coal Bin side, it is possible to install similar explosion venting device additional, and before installing additional,
Need to design suitable arc venting of dust explosion guide pipe, this arc venting of dust explosion guide pipe will be located in Pulverized Coal Bin side
Venting of dust explosion mouth towards be directed to vertically upward by horizontal direction (such as can be in arc venting of dust explosion guide pipe
Axis and horizontal plane angle are to start to be inclined upward to vertically upward at 25 °), then vertically upward
The mouth of pipe install explosion venting device additional.
In this utility model embodiment, arc venting of dust explosion guide pipe and venting of dust explosion mouth can use Flange joint
Or welding, preferentially use welding, prevent flange airtight the most sternly generation gas leakage leakage powder phenomenon.Can be regular
Beat at the bottom of vibrations arcuate guide socket, prevent from accumulating bottom cylinder coal dust.The guide post of arc can be used,
Its flexibility is identical with arcuate guide pipe flexibility.
In actual application, venting of dust explosion lid 4 is located on water sealed tank 5 through guide post 2 lid, plate 7
Inserting in the water sealed tank 5 injecting liquid, venting of dust explosion mouth seals.When Pulverized Coal Bin 1 inner air pressure fluctuated
Time big (may damage Pulverized Coal Bin or affect Pulverized Coal Bin properly functioning), venting of dust explosion lid 4 be backed down edge by air pressure
Guide post 2 moves up, and after pressure release, venting of dust explosion lid 4 is because self gravitation effect is along guide post 2
Fall, again cover and seal venting of dust explosion mouth, it is achieved automatically reset rapidly after pressure release.
Plate 7, by arranging water sealed tank 5, is inserted water sealed tank by the explosion venting device of this utility model embodiment
In 5, compress venting of dust explosion mouth by venting of dust explosion lid 4 self gravitation, it is achieved that dual leak-tight seal；At coal
When in powder cabin 1, pressure is excessive, pressure jack-up venting of dust explosion lid 4 releasing pressure automatically, rely on venting of dust explosion lid 4 after pressure release
Self gravitation automatically reset rapidly, it is not necessary to artificial change and maintenance explosion venting device, it is ensured that coal dust
Storehouse 1 properly functioning, it is therefore prevented that the excessive leakage of coal dust, improves production efficiency, has saved life
Producing cost, and simple in construction, pressure release, venting of dust explosion are sensitive reliably, and service life is long, and maintenance is little.
Above, in conjunction with specific embodiments the technical solution of the utility model is described in detail, is retouched
The specific embodiment stated is adapted to assist in understanding thought of the present utility model.Those skilled in the art are at this
The derivation made on the basis of utility model specific embodiment and modification fall within this utility model protection
Within the scope of.
Claims (10)
1. the explosion venting device for Pulverized Coal Bin venting of dust explosion mouth, it is characterised in that include water sealed tank, venting of dust explosion lid and guiding mechanism, wherein,
Water sealed tank is arranged at venting of dust explosion mouth, and including inner side cell wall, bottom surface and outside cell wall, the space structure of water sealed tank adapts with the shape of venting of dust explosion mouth, and wherein inside water sealed tank, the external diameter of cell wall is not less than the internal diameter of venting of dust explosion mouth；
Being provided with the plate for inserting water sealed tank on venting of dust explosion lid, the space structure of plate adapts with the space structure of water sealed tank, and when venting of dust explosion lid lid is located on water sealed tank, plate inserts in water sealed tank, and the bottom of plate does not contacts with the bottom surface of water sealed tank；
Guiding mechanism is for guiding, so that plate falls in water sealed tank the motion of venting of dust explosion lid.
2. explosion venting device as claimed in claim 1, it is characterised in that wherein, described guiding mechanism is guide post, and it is peripheral that guide post is vertically arranged in water sealed tank, and guide post is fixed on Pulverized Coal Bin shell through venting of dust explosion lid.
3. explosion venting device as claimed in claim 1, it is characterised in that wherein, described guiding mechanism is guide ring or guide pad, in being arranged on water sealed tank and/or on plate.
4. explosion venting device as claimed in claim 2 or claim 3, it is characterised in that wherein, described guiding mechanism is provided with lockable mechanism, for venting of dust explosion lid is locked at predetermined altitude.
5. explosion venting device as claimed in claim 1, it is characterised in that wherein, when the external diameter of inner side cell wall is more than the internal diameter of venting of dust explosion mouth, having boss inside the plate of venting of dust explosion lid, the external diameter of the boss internal diameter more than venting of dust explosion mouth and the internal diameter less than inner side cell wall, the height of boss is more than the height of plate.
6. explosion venting device as claimed in claim 1, it is characterised in that wherein, venting of dust explosion lid is provided with sealing ring on the contact surface on the cell wall top, inner side of water sealed tank.
7. explosion venting device as claimed in claim 1, it is characterised in that also include arc venting of dust explosion guide pipe, for will be located in being directed to vertically upward towards by horizontal direction of the venting of dust explosion mouth of Pulverized Coal Bin side.
8. explosion venting device as claimed in claim 7, it is characterised in that wherein, described arc venting of dust explosion guide pipe axis wherein and horizontal plane angle are to start to be inclined upward to vertically upward at 25 °.
9. explosion venting device as claimed in claim 1, it is characterised in that wherein, described venting of dust explosion mouth is circular venting of dust explosion mouth, and water sealed tank is circular U-type groove, and plate is circular space structure.
10. explosion venting device as claimed in claim 1, it is characterised in that wherein, described venting of dust explosion mouth is rectangle venting of dust explosion mouth, and water sealed tank is square U-type groove, and plate is square space structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620140265.6U CN205574743U (en) | 2016-02-23 | 2016-02-23 | A let out and explode device that is used for buggy storehouse to let out seam broken |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620140265.6U CN205574743U (en) | 2016-02-23 | 2016-02-23 | A let out and explode device that is used for buggy storehouse to let out seam broken |
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| Publication Number | Publication Date |
|---|---|
| CN205574743U true CN205574743U (en) | 2016-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620140265.6U Expired - Fee Related CN205574743U (en) | 2016-02-23 | 2016-02-23 | A let out and explode device that is used for buggy storehouse to let out seam broken |
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| CN (1) | CN205574743U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108411671A (en) * | 2018-03-12 | 2018-08-17 | 北京新锐得环保科技有限公司 | A kind of plant fiber processing steam explosion device |
| CN108519031A (en) * | 2018-04-20 | 2018-09-11 | 南京航空航天大学 | A kind of venting of dust explosion structure with dual venting of dust explosion function |
| CN110411301A (en) * | 2019-08-24 | 2019-11-05 | 浙江路捷顺汽车制造有限公司 | A kind of pressure relief of anti-knock container |
| CN111121568A (en) * | 2019-12-12 | 2020-05-08 | 梁荣 | High-safety horizontal anti-explosion tank door body capable of realizing labyrinth sealing and horizontal anti-explosion tank |
| JP2020075788A (en) * | 2018-11-07 | 2020-05-21 | 極東開発工業株式会社 | Pneumatic conveyance apparatus |
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2016
- 2016-02-23 CN CN201620140265.6U patent/CN205574743U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108411671A (en) * | 2018-03-12 | 2018-08-17 | 北京新锐得环保科技有限公司 | A kind of plant fiber processing steam explosion device |
| CN108411671B (en) * | 2018-03-12 | 2024-03-08 | 北京新锐得环保科技有限公司 | Steam explosion device for plant fiber treatment |
| CN108519031A (en) * | 2018-04-20 | 2018-09-11 | 南京航空航天大学 | A kind of venting of dust explosion structure with dual venting of dust explosion function |
| CN108519031B (en) * | 2018-04-20 | 2023-07-21 | 南京航空航天大学 | Explosion venting structure with dual explosion venting functions |
| JP2020075788A (en) * | 2018-11-07 | 2020-05-21 | 極東開発工業株式会社 | Pneumatic conveyance apparatus |
| JP7226971B2 (en) | 2018-11-07 | 2023-02-21 | 極東開発工業株式会社 | Air conveying device |
| CN110411301A (en) * | 2019-08-24 | 2019-11-05 | 浙江路捷顺汽车制造有限公司 | A kind of pressure relief of anti-knock container |
| CN111121568A (en) * | 2019-12-12 | 2020-05-08 | 梁荣 | High-safety horizontal anti-explosion tank door body capable of realizing labyrinth sealing and horizontal anti-explosion tank |
| CN111121568B (en) * | 2019-12-12 | 2022-04-19 | 梁荣 | High-safety horizontal anti-explosion tank door body capable of realizing labyrinth sealing and horizontal anti-explosion tank |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160914 Termination date: 20180223 |
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| CF01 | Termination of patent right due to non-payment of annual fee |