CN207049394U - A kind of two-way flame proof valve - Google Patents
A kind of two-way flame proof valve Download PDFInfo
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- CN207049394U CN207049394U CN201720968617.1U CN201720968617U CN207049394U CN 207049394 U CN207049394 U CN 207049394U CN 201720968617 U CN201720968617 U CN 201720968617U CN 207049394 U CN207049394 U CN 207049394U
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- valve pocket
- valve
- flap
- sleeve
- locking device
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Abstract
The utility model discloses a kind of two-way flame proof valve, it includes the valve element that valve pocket is located in the valve pocket, wherein：Thinner left valve pocket and right valve chamber formed with thicker middle valve pocket and the left and right sides for being symmetricly set on the middle valve pocket in the valve pocket, the valve element includes central shaft, flap is socketed with the middle part of the central shaft, the flap is located in the middle valve pocket, the size of the flap is less than the cross sectional dimensions of the middle valve pocket, the size of the flap is more than the cross sectional dimensions of the left valve pocket and the right valve chamber, and the central shaft can vertically move left and right and drive the flap synchronizing moving.When the flap is moved to the left the junction of the left valve pocket and the middle valve pocket, the left valve pocket is separated with the middle valve pocket；When the flap moves right to the junction of the right valve chamber and the middle valve pocket, the right valve chamber is separated with the middle valve pocket.Compared with prior art, two-way flame proof valve provided by the utility model can realize that bidirectional explosion-proof is isolated.
Description
Technical field
It the utility model is related to explosion-protection equipment manufacturing field, and in particular to a kind of two-way flame proof valve.
Background technology
Flame proof valve of the prior art is one-way fashion flame proof valve, and it is merely capable of realizing unidirectional closure, therefore it can only be used
To separate flame caused by the blast positioned at its side and dust.
In addition, flame proof valve open in usual of the prior art generally uses the form of heavy hammer structure, after dust explosion greatly
It after shock wave, should also need flap to close, continue to stop flame, but due to the influence of weight, low pressure repercussions are to flap
Pressure is less than influence of the weight to flap, and now flap is opened, it is easy to so that flame by flame proof valve, produce it is serious after
Fruit.
Utility model content
For the utility model in view of the above-mentioned problems, providing a kind of two-way flame proof valve, its concrete technical scheme is as follows：
A kind of two-way flame proof valve, it includes the valve element that valve pocket is located in the valve pocket, wherein：Formed in the valve pocket
There is thicker middle valve pocket and be symmetricly set on the thinner left valve pocket and right valve chamber of the left and right sides of the middle valve pocket.The valve element
Including central shaft, flap is socketed with the middle part of the central shaft, the flap is located in the middle valve pocket, the size of the flap
Less than the cross sectional dimensions of the middle valve pocket, the size of the flap is more than the cross section chi of the left valve pocket and the right valve chamber
Very little, the central shaft can vertically move left and right and drive the flap synchronizing moving.When the flap is moved to the left institute
When stating the junction of left valve pocket and the middle valve pocket, the left valve pocket is separated with the middle valve pocket.When the flap moves right
When moving the junction to the right valve chamber and the middle valve pocket, the right valve chamber is separated with the middle valve pocket.
As further improvement of the utility model, it also includes being symmetricly set on the left locking device above the valve pocket
With right locking device, the lower end of the left locking device is extended in the left valve pocket, the lower end extension of the right locking device
In to the right valve chamber, left wedge-shaped guide sleeve and right wedge-shaped guide sleeve are symmetrically arranged with the central shaft.When the flap position
When the middle part of the middle valve pocket, the left wedge-shaped guide sleeve is located at the right side of the left locking device, and the right wedge shape is oriented to
Set is positioned at the left side of the right locking device；When the flap is moved to the left the junction of the left valve pocket and the middle valve pocket
When, the left wedge-shaped guide sleeve is moved to the left side of the left locking device and locked with the lower end of the left locking device；When
When the flap is moved right to the junction of the right valve chamber and the middle valve pocket, the right wedge-shaped guide sleeve is moved to described
The right side of right locking device simultaneously locks with the lower end of the right locking device.
As further improvement of the utility model, left sleeve pipe is provided with the left valve pocket, the right side is provided with the right valve chamber
Sleeve pipe, the left sleeve pipe are connected through left connecting bolt with the upper wall of the valve pocket, the right sleeve pipe through right connecting bolt with it is described
The upper wall connection of valve pocket, the left end of the left sleeve pipe are connected with left guide sleeve, and the right-hand member of the right sleeve pipe is connected with right guide sleeve；
Left spring fixed block and right spring anchor block are symmetrically socketed with the central shaft, the left guide sleeve is fixed with the left spring
Left back-moving spring is provided between block, right back-moving spring is provided between the right guide sleeve and the right spring anchor block.
As further improvement of the utility model, the valve pocket is symmetrical subdivision structure, its left side and the right side
Half portion is realized through bolt and is detachably connected.
As further improvement of the utility model, set between the left side of the valve pocket and the contact surface of right side O-shaped
Sealing ring.
As further improvement of the utility model, the left side of the valve pocket is provided with left side flange, the valve pocket
Right side be provided with right side flange.
As further improvement of the utility model, the flap is elliposoidal structure.
As further improvement of the utility model, the junction of the left valve pocket and the middle valve pocket is close provided with left abnormity
Packing, the junction of the right valve chamber and the middle valve pocket are provided with right sectional gland bush.
As further improvement of the utility model, the right locking device includes the reset hand of upper end closed open at its lower end
Handle and the release link being located in the reseting handle.The reseting sleeve for being connected to upper end closed open at its lower end is worn in the reseting handle
Cylinder, installation gap is remained between the upper surface of the reset sleeve and the inwall of the reseting handle.In the reset sleeve
The reset rod sleeve for being connected to lower end closed open upper end is worn, the reset sleeve, institute are extended in the lower end for resetting rod sleeve
The lower end for stating reset rod sleeve is connected on the upper wall of the valve pocket.The release link runs through the reset rod sleeve, described multiple
The upper end of position bar passes through the upper wall of the reset sleeve and extends to the top of the reset sleeve, and the lower end of the release link is worn
Cross the upper wall of the valve pocket and extend in the right valve chamber.Spring anchor block is arranged with the middle part of the release link and positioned at institute
The back-moving spring above spring anchor block is stated, the upper end of the back-moving spring and the upper wall of the reset sleeve are inconsistent, described
The lower end of back-moving spring and the upper surface of the spring anchor block are inconsistent, the lower surface of the spring anchor block and the reset
The bottom wall of rod sleeve contradicts.
Compared with prior art, two-way flame proof valve provided by the utility model can realize that bidirectional explosion-proof is isolated.
Brief description of the drawings
Fig. 1 is the outside schematic diagram of two-way flame proof valve of the present utility model in one embodiment；
Fig. 2 is Fig. 1 sectional view；
Fig. 3 is the structural representation of the right locking device in Fig. 2.
Embodiment
For make above-mentioned purpose of the present utility model, feature and advantage, can be more obvious understandable, below in conjunction with the accompanying drawings and tool
Body embodiment is described in further detail to the utility model.
As shown in Figures 1 and 2, two-way flame proof valve provided by the utility model, it includes valve pocket 1 and is located in the valve pocket
Valve element in 1.Wherein：
In the valve pocket 1 formed with the larger middle valve pocket of flux and be symmetricly set on the left and right sides of the middle valve pocket and
With the less left valve pocket of flux and right valve chamber of the middle valve pocket insertion.The valve element includes central shaft 2, in the central shaft
Portion is socketed with flap 3, and the flap 3 is located in the middle valve pocket, and the size of the flap 3 is less than the cross section of the middle valve pocket
Size, the size of the flap 3 are more than the cross sectional dimensions of the left valve pocket and the right valve chamber, and the central shaft 2 being capable of edge
Axially move left and right and drive the synchronizing moving of flap 3.
According to the location of described flap 3, there is following three kinds of states in two-way flame proof valve provided by the utility model：
Left flame proof state：Explosion time occurs in pipeline on the right side of the two-way flame proof valve, high pressure draught rushes from the right valve chamber
Enter in the middle valve pocket and impacting the flap 3.The flap 3 is moved to the left, and is finally fastened on the left valve pocket and institute
State the junction of middle valve pocket.Now, the left valve pocket is separated with the middle valve pocket, and flame caused by blast and dust are described
Flap 3 separates, so as to produce destruction to the pipeline on the left of two-way flame proof valve.
Right flame proof state：Explosion time occurs in pipeline on the left of the two-way flame proof valve, high pressure draught rushes from the left valve pocket
Enter in the middle valve pocket and impacting the flap 3.The flap 3 moves right, and is finally fastened on the right valve chamber and institute
State the junction of middle valve pocket.Now, the right valve chamber is separated with the middle valve pocket, and flame caused by blast and dust are described
Flap 3 separates, so as to produce destruction to the pipeline on the right side of two-way flame proof valve.
Idle condition：When the air-flow in pipeline at left and right sides of the two-way flame proof valve is normal, the now flap 3 or so
The compression of both sides is in the same size.The flap 3 is located at the middle part of the middle valve pocket, due to the flap 3 and the middle valve pocket
Gap between inwall be present.Now, the left valve pocket, the middle valve pocket and the right valve chamber are mutually communicated, and two-way flame proof valve is left
Air-flow in the pipeline of right both sides mutually circulates.
It can be seen that two-way flame proof valve provided by the utility model can realize that bidirectional explosion-proof is isolated.
As shown in Fig. 2 in certain embodiments, two-way flame proof valve provided by the utility model also includes being symmetrical arranged
Left locking device 4 ' and right locking device 4 above the valve pocket 1.The lower end of the left locking device 4 ' extends to the left side
In valve pocket, the lower end of the right locking device 4 is extended in the right valve chamber.Symmetrically be arranged with the central shaft 2 with it is described
The left wedge-shaped guide sleeve 5 ' and right wedge-shaped guide sleeve 5 that left locking device 4 ' and the right locking device 4 are used cooperatively.
Under idle condition, the flap 3 is located at the middle part of the middle valve pocket, and the left wedge-shaped guide sleeve 5 ' is located at the left side
The right side of locking device 4 ', the right wedge-shaped guide sleeve 5 are located at the left side of the right locking device 4.Now, the left wedge shape is led
It is separated from each other to set 5 ' with the left locking device 4 ', the right wedge-shaped guide sleeve 5 is separated from each other with the right locking device 4.
Explosion time occurs in pipeline on the right side of the two-way flame proof valve, when the flap 3 is moved to the left, the left wedge shape is oriented to
5 ' synchronizing movings to the left side of the left locking device 4 ' and the finally lower end mutually locking with the left locking device 4 ' is covered, from
And the flap 3 is enabled firmly to be fastened on the junction of the left valve pocket and the middle valve pocket.
Similarly, explosion time occurs in the pipeline on the left of the two-way flame proof valve, when the flap 3 moves right, the right wedge
To the right side of the right locking device 4 and finally the lower end with the right locking device 4 mutually interlocks the synchronizing moving of shape guide sleeve 5
It is fixed, so that the flap 3 can firmly be fastened on the junction of the right valve chamber and the middle valve pocket.
The left locking device 4 ' is identical with the structure and the course of work of the right locking device 4.Therefore, we are only
By taking the right locking device 4 as an example, to the utility model in certain embodiments the structure of used locking device and
The course of work is described.
As shown in figure 3, in certain embodiments, the right locking device 4 includes answering for upper end closed open at its lower end
Position handle 41 and the release link 42 being located in the reseting handle 41.
Wear the reset sleeve 43 for being connected to upper end closed open at its lower end in the reseting handle 41, the reset sleeve 43 it is upper
Installation gap is remained between the inwall of end face and the reseting handle 41.Wear and be connected in lower end closed in the reset sleeve 43
The reset sleeve 43, the reset rod set are extended in the unlimited reset rod sleeve 44 in end, the lower end for resetting rod sleeve 44
The lower end of cylinder 44 is connected on the upper wall of the valve pocket 1.
For the release link 42 through the reset rod sleeve 44, the upper end of the release link 42 passes through the reset sleeve 43
Upper wall and extend to the top of the reset sleeve 43, the lower end of the release link 42 through the valve pocket 1 upper wall and prolong
Extend in the right valve chamber.The middle part of the release link 42 is arranged with spring anchor block 45 and on the spring anchor block 45
The back-moving spring 46 of side, the upper end of the back-moving spring 46 and the upper wall of the reset sleeve 43 contradict, the back-moving spring 46
The upper surface of lower end and the spring anchor block 45 contradict, the lower surface of the spring anchor block 45 and the reset rod sleeve
44 bottom wall contradicts.
When the non-stress in the lower end of release link 42, the release link 42 is in initial position, now, the back-moving spring
46 are in initial compressed state, and the back-moving spring 46 applies the downward initial pressure of predefined size to the spring anchor block
45, the release link 42 is in initial position.
When the initial pressure to upward pressure more than the back-moving spring 46 suffered by the lower end of release link 42, institute
State compression release link 42 to move up, the back-moving spring 46 is compressed.And when upward suffered by the lower end of release link 42
Pressure when reducing or disappearing, the diastole of back-moving spring 46 resets, promotion of the release link 42 in the back-moving spring 46
Under be moved downward to initial position.
In addition, when the release link 42 is in initial position, when pulling the reseting handle 41 upwards, the release link
Sleeve 44 moves up under the drive of the reset rod sleeve 44 and pushes up the spring anchor block 45, so as to drive
Release link 42 is stated to move up.
The specific locking of the right locking device 4 and releasing process are as follows：
Locking process：Occur explosion time in pipeline on the left of the two-way flame proof valve, the flap 3 is to starting to move right.
Synchronously, the right wedge-shaped guide sleeve 5 synchronously moves right, lower end in contact of its taper end first with the release link 42.With
The right wedge-shaped guide sleeve 5 continues to move right, the roof of the lower extreme point of the release link 42 along the right wedge-shaped guide sleeve 5
Moved to the butt end of the right wedge-shaped guide sleeve 5, in moving process, the release link 42 is pressurized and moved up, the reset bullet
Spring 46 is constantly compressed.
When the flap 3 is moved to the junction of the right valve chamber and the middle valve pocket, the lower end of the release link 42
Point is just off the roof of the right wedge-shaped guide sleeve 5, and now, the moment of back-moving spring 46 loses right wedge-shaped guide sleeve 5
Compressing is rapid to be resetted so that the release link 42 then causes lower end and the institute of the release link 42 by lower bullet to initial position
It is inconsistent to state the end face of the butt end of right wedge-shaped guide sleeve 5, so as to realize locking.After locking, the release link 42 can not realize a left side
Move right.
Under lock-out state, the flap 3 is fastened on the junction of the right valve chamber and the middle valve pocket securely.So as to
Enough ensure flame proof effect of the two-way flame proof valve of the present utility model when explosion type occurs for the pipeline in left side.
Releasing process：After blast terminates when left side, the reseting handle 41 is pulled upwards, the reset rod sleeve 44 is in institute
State and moved up under the drive for resetting rod sleeve 44 and push up the spring anchor block 45, so as to drive the release link 42
Move up.The lower end of the release link 42 departs from the butt end end face of the right wedge-shaped guide sleeve 5, completes unblock.
With continued reference to shown in Fig. 2, in certain embodiments, left sleeve pipe 6 ', the right valve are provided with the left valve pocket
Intracavitary is provided with right sleeve pipe 6.The left sleeve pipe 6 ' is connected through left connecting bolt 7 ' with the upper wall of the valve pocket 1, and the right sleeve pipe 6 passes through
Right connecting bolt 7 is connected with the upper wall of the valve pocket 1.The left end of the left sleeve pipe 6 ' is connected with left guide sleeve 8 ', the right set
The right-hand member of pipe 6 is connected with right guide sleeve 8.
The left guide sleeve 8 ' is coaxially disposed with the right guide sleeve 8, and the footpath with the release link 42 is respectively equipped with it
The pilot hole slightly to match.The left guide sleeve 8 ' and the right guide sleeve 8 can be that the release link 42 provides guide effect,
Prevent the sideslip in moving process of release link 42.
Left spring fixed block 9 ' and right spring anchor block 9 are symmetrically socketed with the central shaft 1.The left guide sleeve 8 ' with
Left back-moving spring 10 ' is provided between the left spring fixed block 9 ', between the right guide sleeve 8 and the right spring anchor block 9
Provided with right back-moving spring 10.
The left back-moving spring 10 ' is identical with the coefficient of elasticity of the right back-moving spring 10.The left back-moving spring
10 ' and the right back-moving spring 10 be used to realize the reset of the two-way flame proof valve.
Hereinafter, only so that pipeline explodes on the left of two-way flame proof valve as an example, the left back-moving spring 10 ' and the right side are described
The reset principle of back-moving spring 10.
When the two-way flame proof valve is in idle condition (original state), the left back-moving spring 10 ' and the right side are multiple
The decrement of position spring 10 is identical, and now, the flap 3 is located at the middle part of the middle valve pocket.
Explosion time occurs in pipeline on the left of the two-way flame proof valve, as described above, the right wedge-shaped guide sleeve 5 moves
Move to the right side of the right locking device 4 and the final lower end mutually locking with the right locking device 4, so that the valve
Valve 3 can firmly be fastened on the junction of the right valve chamber and the middle valve pocket.Now, the left back-moving spring 10 ', which is in, draws
State is stretched, the right back-moving spring 10 is in compressive state.
After blast terminates, the lower end of the right locking device 4 moves up, the right locking device 4 and the right wedge shape
Guide sleeve 5 unlocks.Now, the left retracted for clearance of back-moving spring 10 ', the right diastole of back-moving spring 1 resets, until institute
The decrement that left back-moving spring 10 ' is stated with the right back-moving spring 10 is identical, finally cause the flap 3 return to it is described in
The middle part of valve pocket.
With continued reference to shown in Fig. 2, in certain embodiments, the valve pocket 1 is symmetrical subdivision structure, and it is left
Half portion is tightly connected with right side through bolt 12.When needing that the part in the valve pocket 1 is repaired and changed, as long as unloading
Under the bolt 12, can easily take the valve pocket 1 apart.
In order to ensure the sealing between the left side of the valve pocket 1 and right side, it is preferable that a left side for the valve pocket 1
O-ring seal 14 is provided between half portion and right half part contact surface.
The left side of the valve pocket 1 is provided with left side flange 11 ', and the right side of the valve pocket 1 is provided with right side method
Orchid 11.Through the left side flange 11 ' and the right side flange 11, two-way flame proof valve of the present utility model can be attached to
The junction of pipeline.
With continued reference to shown in Fig. 2, in certain embodiments, the flap 3 is elliposoidal structure.The middle valve pocket
Excessive chamber of the left and right ends formed with arc, the middle valve pocket connect through the excessively chamber with the left valve pocket and the right valve chamber
Connect.Because the flap 3 is elliposoidal, excessive chamber of the left and right ends formed with arc of the middle valve pocket, therefore the flap 3
And be not easy to accumulate dust in the middle valve pocket, so as to extend the maintenance period of flame proof valve.
In order to lift the isolation effect of the flap 3, the junction of the left valve pocket and the middle valve pocket is provided with left abnormity
Sealing gasket 13 ', the junction of the right valve chamber and the middle valve pocket are provided with right sectional gland bush 13.
The description with certain particularity detailed enough has been carried out to the utility model above.It is common in art
It is to be understood by the skilled artisans that what the description in embodiment was merely exemplary, without departing from true spirit of the present utility model and
All changes are made on the premise of scope should all belong to the scope of protection of the utility model.The utility model is claimed
Scope is defined by described claims, rather than is limited by the foregoing description in embodiment.
Claims (9)
- A kind of 1. two-way flame proof valve, it is characterised in that：It includes valve pocket and wears the valve element being connected in the valve pocket, wherein：In the valve pocket flux formed with the larger middle valve pocket of flux and the left and right sides for being symmetricly set on the middle valve pocket compared with Small left valve pocket and right valve chamber,The valve element includes central shaft, and flap is socketed with the middle part of the central shaft, and the flap is located in the middle valve pocket, institute The size for stating flap is less than the cross sectional dimensions of the middle valve pocket, and the size of the flap is more than the left valve pocket and the right valve The cross sectional dimensions of chamber, the central shaft can vertically move left and right and drive the flap synchronizing moving；When the flap is moved to the left the junction of the left valve pocket and the middle valve pocket, the left valve pocket and the middle valve Chamber is separated；When the flap moves right to the junction of the right valve chamber and the middle valve pocket, the right valve chamber and the middle valve Chamber is separated.
- 2. two-way flame proof valve as claimed in claim 1, it is characterised in that：It also includes being symmetricly set on above the valve pocket Left locking device and right locking device, the lower end of the left locking device are extended in the left valve pocket, the right locking device Lower end extend in the right valve chamber, left wedge-shaped guide sleeve and right wedge-shaped guide sleeve are symmetrically arranged with the central shaft；When the flap is located at the middle part of the middle valve pocket, the left wedge-shaped guide sleeve is located at the right side of the left locking device Side, the right wedge-shaped guide sleeve are located at the left side of the right locking device；When the flap is moved to the left the junction of the left valve pocket and the middle valve pocket, the left wedge-shaped guide sleeve movement Locked to the left side of the left locking device and with the lower end of the left locking device；When the flap moves right to the junction of the right valve chamber and the middle valve pocket, the right wedge-shaped guide sleeve movement Locked to the right side of the right locking device and with the lower end of the right locking device.
- 3. two-way flame proof valve as claimed in claim 1, it is characterised in that：Left sleeve pipe, the right valve are provided with the left valve pocket Intracavitary is provided with right sleeve pipe, and the left sleeve pipe is connected through left connecting bolt with the upper wall of the valve pocket, and the right sleeve pipe is through right connection Bolt is connected with the upper wall of the valve pocket, and the left end of the left sleeve pipe is connected with left guide sleeve, the right-hand member connection of the right sleeve pipe There is right guide sleeve；Left spring fixed block and right spring anchor block, the left guide sleeve and the left spring are symmetrically socketed with the central shaft Left back-moving spring is provided between fixed block, right back-moving spring is provided between the right guide sleeve and the right spring anchor block.
- 4. two-way flame proof valve as claimed in claim 1, it is characterised in that：The valve pocket is symmetrical subdivision structure, its Realize and be detachably connected through bolt with right side in left side.
- 5. two-way flame proof valve as claimed in claim 4, it is characterised in that：The left side of the valve pocket and the contact surface of right side Between set O-ring seal.
- 6. two-way flame proof valve as claimed in claim 1, it is characterised in that：The left side of the valve pocket is provided with left side method Orchid, the right side of the valve pocket are provided with right side flange.
- 7. two-way flame proof valve as claimed in claim 1, it is characterised in that：The flap is elliposoidal structure.
- 8. two-way flame proof valve as claimed in claim 7, it is characterised in that：The junction of the left valve pocket and the middle valve pocket is set There is left sectional gland bush, the junction of the right valve chamber and the middle valve pocket is provided with right sectional gland bush.
- 9. two-way flame proof valve as claimed in claim 2, it is characterised in that：The right locking device opens including upper end closed lower end The reseting handle opened and the release link being located in the reseting handle；Wear the reset sleeve for being connected to upper end closed open at its lower end in the reseting handle, the upper surface of the reset sleeve with it is described Installation gap is remained between the inwall of reseting handle, the release link for being connected to lower end closed open upper end is worn in the reset sleeve The reset sleeve is extended in sleeve, the lower end for resetting rod sleeve, and the lower end for resetting rod sleeve is connected to the valve On the upper wall of set；The release link runs through the reset rod sleeve, and the upper end of the release link passes through upper wall and the extension of the reset sleeve To the top of the reset sleeve, the lower end of the release link passes through the upper wall of the valve pocket and extended in the right valve chamber, Spring anchor block and the back-moving spring above the spring anchor block, the reset bullet are arranged with the middle part of the release link The upper end of spring and the upper wall of the reset sleeve are inconsistent, the lower end of the back-moving spring and the upper surface of the spring anchor block Inconsistent, the lower surface of the spring anchor block and the bottom wall of the reset rod sleeve contradict.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720968617.1U CN207049394U (en) | 2017-08-04 | 2017-08-04 | A kind of two-way flame proof valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720968617.1U CN207049394U (en) | 2017-08-04 | 2017-08-04 | A kind of two-way flame proof valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207049394U true CN207049394U (en) | 2018-02-27 |
Family
ID=61498724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720968617.1U Active CN207049394U (en) | 2017-08-04 | 2017-08-04 | A kind of two-way flame proof valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207049394U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107300031A (en) * | 2017-08-04 | 2017-10-27 | 江苏爵格工业设备有限公司 | A kind of two-way flame proof valve |
| CN112963591A (en) * | 2021-03-21 | 2021-06-15 | 东北石油大学 | Double-trigger umbrella type explosion-proof valve for oil-gas pipeline |
-
2017
- 2017-08-04 CN CN201720968617.1U patent/CN207049394U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107300031A (en) * | 2017-08-04 | 2017-10-27 | 江苏爵格工业设备有限公司 | A kind of two-way flame proof valve |
| CN112963591A (en) * | 2021-03-21 | 2021-06-15 | 东北石油大学 | Double-trigger umbrella type explosion-proof valve for oil-gas pipeline |
| CN112963591B (en) * | 2021-03-21 | 2022-02-15 | 东北石油大学 | Double-trigger umbrella type explosion-proof valve for oil-gas pipeline |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 224100 Jiangsu Yancheng City Dafeng Economic Development Zone South of pump valve industrial park Patentee after: Jiangsu Dragon Industries Equipment Co., Ltd. Address before: 224100 Jiangsu Yancheng City Economic Development Zone, south of pump valve industrial park. Patentee before: Jiangsu Dragon Industries Equipment Co., Ltd. |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 224199 Xikang Road, Dafeng Economic Development Zone, Yancheng City, Jiangsu Province Patentee after: Jiangsu juege Industry Group Co.,Ltd. Address before: 224100 Jiangsu Yancheng City Dafeng Economic Development Zone South of pump valve industrial park Patentee before: JIANGSU DRAGON INDUSTRIAL EQUIPMENT Co.,Ltd. |