CN207830644U - A kind of unidirectional flame proof valve of classification pressure-bearing - Google Patents
A kind of unidirectional flame proof valve of classification pressure-bearing Download PDFInfo
- Publication number
- CN207830644U CN207830644U CN201721821296.9U CN201721821296U CN207830644U CN 207830644 U CN207830644 U CN 207830644U CN 201721821296 U CN201721821296 U CN 201721821296U CN 207830644 U CN207830644 U CN 207830644U
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- Prior art keywords
- flange
- flap
- flame proof
- cavity
- outlet
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Abstract
The utility model discloses a kind of unidirectional flame proof valve of classification pressure-bearing, the isolating device fields of dust explosion protection, to solve the problems, such as that unidirectional flame proof valve degree of protection is insufficient at present.The utility model includes valve casing, the both ends of the valve casing are respectively arranged with suction flange and outlet(discharge) flange, it is provided with cavity in the valve casing, the cavity is connected to the suction flange, the outlet(discharge) flange, flap seat is equipped in the cavity, the flap that can be fitted with flap seat is hinged in the cavity, the cavity includes the one-stage expansion room being sequentially communicated from outlet(discharge) flange to suction flange direction, compound expansion room, three-level expanding chamber.The utility model is for protecting dust explosion, the safety of protection staff and equipment.
Description
Technical field
The utility model belongs to the isolating device field of dust explosion protection, and being more particularly to one kind preventing dust subsequent explosion
Unidirectional flame proof valve.
Background technology
With the development of national economy, dust explosion protection is increasingly taken seriously, and great powder several times has had occurred in China
Dust explosion accident, and cause great casualties and property loss.The isolating device of existing major part dust explosion protection, nothing
Method opens good protective effect in the higher ranked operating mode of dust explosion.
A kind of Chinese utility model " unidirectional flame proof valve " (Authorization Notice No. CN206626213U) disclose it is a kind of unidirectionally every
Quick-fried valve, including valve casing, flap, close to switch and latch, the both ends of valve casing are respectively equipped with suction flange and outlet(discharge) flange, in valve casing
Equipped with cavity, flap is within the cavity, and flap is rotatablely connected by one end of axis and valve casing, when in off working state or flame proof
When state, the end face of inner surface one end within the cavity with suction flange of flap fits, and axis is equipped with positioned at valve casing
Locking rod, the bottom of valve casing be equipped with for detect flap position close to switch, the lateral wall of one end of latch and valve casing connects,
The locking bar for stopping locking rod is equipped in latch, close to switch and latch connection, close to the stretching of switch control locking bar, when connecing
Nearly inductive switching sends out signal, the locking bar pop-up of latch when reaching designated position to flap, blocking stops locking bar.The utility model
It can not effectively protect the higher operating mode of magnitude of explosion, shock wave that can only be born by valve casing, when brisance is more than the upper limit,
Then entire unidirectional flame proof defective valve.
Utility model content
The purpose of this utility model is that：A kind of unidirectional flame proof valve of classification pressure-bearing is provided, to solve unidirectional flame proof at present
The problem of valve degree of protection deficiency.
The technical solution adopted in the utility model is as follows：
A kind of unidirectional flame proof valve of classification pressure-bearing, including valve casing, the both ends of the valve casing be respectively arranged with suction flange and
Outlet(discharge) flange is provided with cavity in the valve casing, and the cavity is connected to the suction flange, the outlet(discharge) flange, the chamber
It is equipped with flap seat in vivo, is hinged with the flap that can be fitted with flap seat in the cavity, the cavity includes by outlet(discharge) flange
One-stage expansion room, the compound expansion room being sequentially communicated to suction flange direction, three-level expanding chamber.
Further, the one-stage expansion room is set as the two-double cylinder cavity coaxial with outlet(discharge) flange, the level-one
It is circumferentially provided with through-hole on the side wall of the inner layer cylinder of expanding chamber.
Further, it is circumferentially provided with baffle on the inner wall of the compound expansion room, the baffle is to outlet(discharge) flange direction
Recess forms bowl-type flame proof plate, and the end set of the flame proof plate has connecting hole, the connecting hole and suction flange, outlet(discharge) flange
Coaxially.
Further, the indoor baffle plate setting of the compound expansion is two layers or more.
Further, postive stop baffle is provided in the three-level expanding chamber, the flap is located in three-level expanding chamber, described
Postive stop baffle limits the maximum angle that the flap is opened；The flap be located at open maximum angle when, the flap with
There are gaps between adjacent flame proof plate.
In conclusion by adopting the above-described technical solution, the utility model has the beneficial effects that：
1, in the utility model, the cavity of valve body is set as multilayer expanding chamber, by the shock wave energy conducted in equipment point
Grade consumption absorbs, while flap is closed under the action of shock wave, completely cuts off flame propagation, shock wave and flame is avoided to be transmitted to pipe
Subsequent explosion is generated in road system.The multiple expansion room of setting can be carried in the case where material thickness is not significantly increased simultaneously
The protection magnitude of explosion of high flame proof valve.Also, after closing flap at shock wave arrival flap, the energy of shock wave can be slow
Decaying subsides after avoiding the impact wave impact of the prior art and generates negative pressure at flap, and causes flap to be again turned on and cause
Subsequent explosion.
2, in the utility model, one-stage expansion room is set as double-layered cylinder cavity, the energy of dispersed shock wave and flame, drop
The low active force acted on follow-up expansion room and flap, reduces the crushing of pipeline.
3, in the utility model, it is provided with multilayer baffle in compound expansion chamber, bowl-shape flame proof plate is provided on baffle,
Flame proof plate end set has connecting hole, and when shock wave reaches compound expansion room, shock impingement is on flame proof plate, constantly abatement punching
The energy of wave and flame is hit, while a part of shock wave and flame are spread in expanding chamber, consume energy, thereby reduce pipe
The crushing in road.
4, in the utility model, postive stop baffle is set in three-level expanding chamber, to limit the maximum angle of flap unlatching, is kept away
Exempt to be unable to normal switching-off flap when shock wave arrives；There are gap between the flap and flame proof plate opened simultaneously, avoid damage every
Plate bursting.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
It is marked in figure：1- valve casings, 2- suction flanges, 3- outlet(discharge) flanges, 4- flap seats, 5- flaps, 6- one-stage expansions room,
601- through-holes, 7- compound expansions room, 701- baffles, 702- flame proof plates, 703- connecting holes, 8- three-level expanding chambers, 801- limiting blocks
Plate, 9- counterweights.
Specific implementation mode
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only explaining this
Utility model is not used to limit the utility model.
As shown in Figure 1, a kind of unidirectional flame proof valve of classification pressure-bearing, including valve casing 1, the both ends of valve casing 1 be respectively arranged with into
Mouthful flange 2 and outlet(discharge) flange 3 are provided with cavity in valve casing 1, and cavity is connected to suction flange 2, outlet(discharge) flange 3, is equipped in cavity
Flap seat 4, is hinged with the flap 5 that can be fitted with flap seat 4 in cavity, and cavity includes from outlet(discharge) flange 3 to 2 side of suction flange
To one-stage expansion room 6, the compound expansion room 7 being sequentially communicated, three-level expanding chamber 8.
Further, one-stage expansion room 6 is set as the two-double cylinder cavity coaxial with outlet(discharge) flange 3, one-stage expansion room 6
Inner layer cylinder side wall on be circumferentially provided with through-hole 601.
Further, it is circumferentially provided with baffle 701 on the inner wall of compound expansion room 7, baffle 701 is to 3 direction of outlet(discharge) flange
Recess forms bowl-type flame proof plate 702, and the end set of flame proof plate 702 has a connecting hole 703, and connecting hole 703 and suction flange 2 go out
Mouth flange 3 is coaxial.
Further, the baffle plate setting in compound expansion room 7 is two layers or more.
Further, postive stop baffle 801 is provided in three-level expanding chamber 8, flap 5 is located in three-level expanding chamber 8, limiting block
Plate 801 limits the maximum angle of the unlatching of flap 5；When flap 5 is located at the maximum angle opened, flap 5 and adjacent flame proof plate
There are gaps between 702.
Counterweight 9 is additionally provided with outside valve casing 1, counterweight 9 is fixed with flap 5 and intercepted, to keep the normally opened shape of flap 5
State effectively reduces the crushing of pipeline.
In the utility model, the cavity of valve body 1 is set as multilayer expanding chamber, and the shock wave energy conducted in equipment is classified
Consumption absorbs, while flap 5 is closed under the action of shock wave, completely cuts off flame propagation, shock wave and flame is avoided to be transmitted to pipe
Subsequent explosion is generated in road system.The multiple expansion room of setting can be carried in the case where material thickness is not significantly increased simultaneously
The protection magnitude of explosion of high flame proof valve.Also, shock wave is reached by after the closing of flap 5 at flap 5, and the energy of shock wave can be slow
Decaying, subside after avoiding the impact wave impact of the prior art and generate negative pressure at flap 5, and flap 5 is caused to be again turned on
Cause subsequent explosion.
Embodiment 1
A kind of unidirectional flame proof valve of classification pressure-bearing, including valve casing 1, the both ends of valve casing 1 are respectively arranged with suction flange 2 and go out
Mouthful flange 3 is provided with cavity in valve casing 1, and cavity be connected to suction flange 2, outlet(discharge) flange 3, and cavity is interior equipped with flap seat 4, chamber
It is hinged with the flap 5 that can be fitted with flap seat 4 in vivo, cavity includes being sequentially communicated from outlet(discharge) flange 3 to 2 direction of suction flange
One-stage expansion room 6, compound expansion room 7, three-level expanding chamber 8.
In the present embodiment, the cavity of valve body 1 is set as one-stage expansion room 6, compound expansion room 7, three-level expanding chamber 8., will set
The shock wave energy classification consumption of standby interior conduction absorbs, while flap 5 is closed under the action of shock wave, completely cuts off flame propagation,
Shock wave and flame is avoided to be transmitted in pipe-line system and generate subsequent explosion.The multiple expansion room of setting can be little simultaneously
Width improves the protection magnitude of explosion of flame proof valve in the case of increasing material thickness.Also, shock wave reaches flap 5 at flap 5
After closing, the energy of shock wave can slowly decay, and subside after avoiding the impact wave impact of the prior art and generated at flap 5
Negative pressure, and cause flap 5 to be again turned on and cause subsequent explosion.
Embodiment 2
On the basis of embodiment one, one-stage expansion room 6 is set as the two-double cylinder cavity coaxial with outlet(discharge) flange 3,
Through-hole 601 is circumferentially provided on the side wall of the inner layer cylinder of one-stage expansion room 6.
In the present embodiment, one-stage expansion room 6 is set as double-layered cylinder cavity, and the energy of dispersed shock wave and flame reduces
The active force on compound expansion room 7, three-level expanding chamber 7 and flap 5 is acted on, the crushing of pipeline is reduced.
Embodiment 3
On the basis of embodiment one, it is circumferentially provided with baffle 701 on the inner wall of compound expansion room 7, baffle 701 is to outlet
3 direction of flange is recessed to form bowl-type flame proof plate 702, and the end set of flame proof plate 702 has connecting hole 703, connecting hole 703 and import
Flange 2, outlet(discharge) flange 3 are coaxial.Baffle plate setting in compound expansion room 7 is two layers or more.
In the present embodiment, it is provided with multilayer baffle 701 in compound expansion chamber 7, bowl-shape flame proof is provided on baffle 701
Plate 702,702 end set of flame proof plate have connecting hole 703, and when shock wave reaches compound expansion room 7, shock impingement is in flame proof
On plate 702, constantly cut down the energy of shock wave and flame, while the diffusion in compound expansion room 7 of a part of shock wave and flame,
Energy is consumed, the crushing of pipeline is thereby reduced.
Embodiment 4
On the basis of embodiment one, postive stop baffle 801 is provided in three-level expanding chamber 8, flap 5 is located at three-level expanding chamber
In 8, postive stop baffle 801 limits the maximum angle of the unlatching of flap 5；Flap 5 be located at open maximum angle when, flap 5 with
There are gaps between adjacent flame proof plate 702.
In the present embodiment, postive stop baffle 801 is set in three-level expanding chamber 8, to limit the maximum angle of the unlatching of flap 5,
Normal switching-off flap 5 is unable to when shock wave being avoided to arrive；There are gaps between the flap 5 and flame proof plate 702 opened simultaneously, avoid
Damage flame proof plate 702.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement etc., should be included in the utility model made by within the spirit and principle of utility model
Protection domain within.
Claims (5)
1. a kind of unidirectional flame proof valve of classification pressure-bearing, including valve casing (1), the both ends of the valve casing (1) are respectively arranged with import method
Blue (2) and outlet(discharge) flange (3), the valve casing (1) is interior to be provided with cavity, the cavity and the suction flange (2), the outlet
Flange (3) is connected to, and flap seat (4) is equipped in the cavity, the flap that can be fitted with flap seat (4) is hinged in the cavity
(5), it is characterised in that：The cavity includes the one-stage expansion room being sequentially communicated from outlet(discharge) flange (3) to suction flange (2) direction
(6), compound expansion room (7), three-level expanding chamber (8).
2. a kind of unidirectional flame proof valve of classification pressure-bearing according to claim 1, it is characterised in that：The one-stage expansion room
(6) the two-double cylinder cavity coaxial with outlet(discharge) flange (3), the side wall of the inner layer cylinder of the one-stage expansion room (6) are set as
On be circumferentially provided with through-hole (601).
3. a kind of unidirectional flame proof valve of classification pressure-bearing according to claim 1, it is characterised in that：The compound expansion room
(7) baffle (701) is circumferentially provided on inner wall, the baffle (701) is recessed to form bowl-type flame proof to outlet(discharge) flange (3) direction
Plate (702), the end set of the flame proof plate (702) have a connecting hole (703), the connecting hole (703) and suction flange (2),
Outlet(discharge) flange (3) is coaxial.
4. a kind of unidirectional flame proof valve of classification pressure-bearing according to claim 3, it is characterised in that：The compound expansion room
(7) baffle plate setting in is two layers or more.
5. a kind of unidirectional flame proof valve of classification pressure-bearing according to claim 4, it is characterised in that：The three-level expanding chamber
(8) postive stop baffle (801) is provided in, the flap (5) is located in three-level expanding chamber (8), postive stop baffle (801) limitation
The maximum angle that the flap (5) is opened；The flap (5) be located at open maximum angle when, the flap (5) with it is adjacent
Flame proof plate (702) between there are gaps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721821296.9U CN207830644U (en) | 2017-12-23 | 2017-12-23 | A kind of unidirectional flame proof valve of classification pressure-bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721821296.9U CN207830644U (en) | 2017-12-23 | 2017-12-23 | A kind of unidirectional flame proof valve of classification pressure-bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207830644U true CN207830644U (en) | 2018-09-07 |
Family
ID=63388913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721821296.9U Expired - Fee Related CN207830644U (en) | 2017-12-23 | 2017-12-23 | A kind of unidirectional flame proof valve of classification pressure-bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207830644U (en) |
-
2017
- 2017-12-23 CN CN201721821296.9U patent/CN207830644U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180907 Termination date: 20211223 |