CN206299850U - A kind of dust back pressure flame proof valve - Google Patents
A kind of dust back pressure flame proof valve Download PDFInfo
- Publication number
- CN206299850U CN206299850U CN201621443591.0U CN201621443591U CN206299850U CN 206299850 U CN206299850 U CN 206299850U CN 201621443591 U CN201621443591 U CN 201621443591U CN 206299850 U CN206299850 U CN 206299850U
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- CN
- China
- Prior art keywords
- valve body
- flap
- back pressure
- flame proof
- rocking bar
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Abstract
The utility model is related to explosion-proof device field, specifically related to a kind of dust back pressure flame proof valve, including valve body, flap, one fixed installation inclined end face in the valve body, flap is fixedly connected with flap rocking bar, flap rocking bar upper end is fixed with locating shaft, inclined end face side is installed with limiting plate, locating shaft is connected with the transmission device being installed on outside valve body, bonnet is fixedly connected with the valve body, contact position on bonnet with valve body is provided with gasket seal, there is detonation or blast in the outlet side of flame proof valve, because back pressure increases, flow reversal, so that back pressure flap is closed, the pressure wave meeting envoy's flap for producing that explodes is closed on the inclined end face of entrance side, so as to prevent detonation propagation to upstream line and equipment, play a part of isolation.
Description
Technical field
The utility model is related to explosion-proof device field, and in particular to a kind of dust back pressure flame proof valve.
Background technology
With the development of modern industry, the potentially danger of dust explosion is greatly increased.In actual production, simply use
Bursting diaphragm venting of dust explosion, does not carry out blast isolation, and the flame for producing that explodes will be transferred to other phases with pressure wave by the pipeline that is connected
Attached device, causes the generation of secondary even more big power blast.Flame proof technology can prevent blast from initial position to other works
Skill cell propagation, it is to avoid the generation of " secondary " blast or system explosion accident, so as to mitigate explosion disaster.Dust explosion isolating valve
It is used to easily cause the occasion of dust explosion as a kind of passive device original paper.
The content of the invention
To solve problem of the prior art, the utility model provides a kind of dust back pressure flame proof valve.
In order to achieve the above object, the utility model uses following technical scheme：A kind of dust back pressure flame proof valve, including valve
One fixed installation inclined end face in body, flap, the valve body, flap is fixedly connected with flap rocking bar, and flap rocking bar upper end is consolidated
Surely locating shaft is provided with, inclined end face side is installed with limiting plate, and locating shaft is connected with the transmission device being installed on outside valve body,
Bonnet is fixedly connected with the valve body, and the contact position on bonnet with valve body is provided with gasket seal.
Positioning thread insert is installed in the locating shaft outer end, and locating shaft can be relatively rotated in positioning thread insert, outside positioning thread insert
End mounting O-shaped sealing ring, installation axle elastic block piece in O-ring seal.
The transmission device includes weight, and weight is fixedly connected with self-locking rocking bar, and self-locking rocking bar is provided with gear grooved, self-locking
Rocking bar side is provided with projection, and valve body is provided with the groove matched with projection, and bottom portion of groove is provided with rib, and positioning shaft end is fixed
It is provided with the gear matched with gear grooved.
The weight includes base, and the axis of vertical feet fixed installation can cover on axis and put heavy punch piece.
The valve end is provided with explosion-proof screen cloth, and explosion-proof screen cloth is provided with through hole.
The valve body side connects inert gas tube, and magnetic valve is provided with inert gas tube.
, there is detonation or blast in the outlet side of flame proof valve in dust back pressure flame proof valve of the present utility model, because back pressure increases,
Flow reversal so that back pressure flap is closed, the pressure wave meeting envoy's flap for producing that explodes closes the inclined end face in entrance side
On, so as to prevent detonation propagation to upstream line and equipment, play a part of isolation, not by electrical equipment, filled by being driven
The opening and closing that flap is realized by automatism is capable of achieving are put, the generation probability of electric spark is reduced, flame proof is increased
Security, good sealing prevention reduces the possibility of combustible material leakage, takes the method for inflated with nitrogen to tie up to greatest extent
Inert condition is held, the effect of flame proof is improve.
Brief description of the drawings
Fig. 1 is a kind of embodiment cross section structure diagram of the utility model.
Fig. 2 is the utility model another kind embodiment cross section structure diagram.
Fig. 3 is the utility model transmission structures schematic diagram.
Fig. 4 is the utility model locating shaft external structure schematic diagram.
Specific embodiment
The utility model is described in further details below by embodiment, embodiment is only used for illustrating that this practicality is new
Type, is not intended to limit scope of the present utility model.
The fixed peace of one in a kind of dust back pressure flame proof valve as shown in Fig. 1,3,4, including valve body 1, flap 2, the valve body 1
Dress inclined end face 22, one is fixed compared with other fixed form flame proof effects more preferably, and flap 2 matches setting, valve with inclined end face 22
Valve 2 can meet covering inclined end face 22, and flap 2 is fixedly connected by the first bolt 4 with flap rocking bar 3, and the upper end of flap rocking bar 3 is consolidated
Surely locating shaft 8 is provided with, locating shaft 8 controls the rotation of flap rocking bar 3 by rotating, and at least one end of locating shaft 8 is pivotally mounted to
Valve body side, with outside combined with transmission after contact jaw sealing, so as to drive the folding of 2 relative tilt end face of flap 22, inclines
The side of angled end-face 22 is installed with limiting plate 7, and locating shaft 8 is connected with the transmission device being installed on outside valve body 1, bonnet 6 and valve
Body 1 is fixedly connected by the second bolt 5, and gasket seal 23 is provided with the contact position of valve body 1 on bonnet 6, and gasket seal 23 is very
Sealing function is played well, and upper lid is detachably set is easy to the operation such as maintenance.
Positioning thread insert 19 is installed in the outer end of locating shaft 8, and locating shaft 8 can be relatively rotated in positioning thread insert 19, positioning thread insert
19 outer end mounting O-shaped sealing rings 20, installation axle elastic block piece 21 in O-ring seal 20, this kind of design more can compared with prior art
Ensure sealed air-tight.
The transmission device includes weight, and weight is fixedly connected by the side such as welding or bolt connection with self-locking rocking bar 24
Formula, self-locking rocking bar 24 is provided with gear grooved 11, and the side of self-locking rocking bar 24 is fixed with raised 13, and valve body 1 is provided with and raised 13
The groove 14 for matching, the bottom of groove 14 is provided with rib 12, and raised 13 can slide in groove 14, and the end of locating shaft 8 is by adopting
The gear 10 matched with gear grooved 11 is provided with fixed forms such as welding or pin joints.
The weight includes base 16, and the axis 18 of the fixed installation of vertical feet 16 can cover on axis 18 and put heavy punch piece 11,
Weight weight can be adjusted as needed, so as to control the flap 2 to carry out different opening degrees.
The fixed peace of one in a kind of dust back pressure flame proof valve, including valve body 1 as shown in Figure 2,3, 4, flap 2, the valve body 1
Dress inclined end face 22, one is fixed compared with other fixed form flame proof effects more preferably, and flap 2 matches setting, valve with inclined end face 22
Valve 2 can meet covering inclined end face 22, and flap 2 is fixedly connected by the first bolt 4 with flap rocking bar 3, and the upper end of flap rocking bar 3 is consolidated
Surely locating shaft 8 is provided with, locating shaft 8 controls the rotation of flap rocking bar 3 by rotating, and at least one end of locating shaft 8 is pivotally mounted to
Valve body side, with outside combined with transmission after contact jaw sealing, so as to drive the folding of 2 relative tilt end face of flap 22, inclines
The side of angled end-face 22 is installed with limiting plate 7, and locating shaft 8 is connected with the transmission device being installed on outside valve body 1, bonnet 6 and valve
Body 1 is fixedly connected by the second bolt 5, and gasket seal 23 is provided with the contact position of valve body 1 on bonnet 6, and gasket seal 23 is very
Sealing function is played well, and upper lid is detachably set is easy to the operation such as maintenance.The outer end of locating shaft 8 is installed by positioning thread insert 19, positioning
Axle 8 can be relatively rotated in the positioning thread insert 19, the outer end mounting O-shaped sealing ring 20 of positioning thread insert 19, installation axle in O-ring seal 20
With elastic block piece 21, this kind of design more can guarantee that sealed air-tight compared with prior art.
The transmission device includes weight, and weight is fixedly connected by the side such as welding or bolt connection with self-locking rocking bar 24
Formula, self-locking rocking bar 24 is provided with gear grooved 11, and the side of self-locking rocking bar 24 is fixed with raised 13, and valve body 1 is provided with and raised 13
The groove 14 for matching, the bottom of groove 14 is provided with rib 12, and raised 13 can slide in groove 14, and the end of locating shaft 8 is by adopting
The gear 10 matched with gear grooved 11 is provided with fixed forms such as welding or pin joints.
The weight includes base 16, and the axis 18 of the fixed installation of vertical feet 16 can cover on axis 18 and put heavy punch piece 17.
Weight weight can be adjusted as needed, so as to control the flap 2 to carry out different opening degrees.
The end of valve body 1 is provided with explosion-proof screen cloth 28, and explosion-proof screen cloth 28 is provided with through hole 27, is ensureing what dust was passed through
Meanwhile, reduced bore as far as possible, so that the impulsive force for causing of disperseing to explode, explosion-proof screen cloth 28 is by using aluminum alloy series material manufacture
Form.
The side of valve body 1 connects and magnetic valve 26 is provided with inert gas tube 25, inert gas tube 25, and magnetic valve 26 is by control
Device processed（Do not marked in figure）Control, so as to the timely automated opening magnetic valve 26 when danger occurs, it is to avoid valve is opened manually
Danger, then pass to nitrogen or other inert gases and maintain pipeline inert condition.
If in the case of permission, there is detonation or blast in the outlet side of flame proof valve, because back pressure increases, air-flow reverse flow
Dynamic so that back pressure flap is closed, the pressure wave meeting envoy's flap for producing that explodes is closed on the inclined end face of entrance side, so as to prevent
Detonation propagation plays a part of isolation to upstream line and equipment.
Under the conditions of systems in operation, internal back pressure flap is floated because of air-flow, and flame proof valve is opened, and weight is automatic
Rise；Regulation weight descent tape moving gear is rotated clockwise realizes that flap is closed on inclined end face, also dependent on situation regulation
Gear grooved and gear, using suitable weight, with reference to the fluid force in valve so that be not to be capable of achieving beating for flap by electric power
It is open and close, such as change the rotations original position of gear and teeth groove with reference to the relative weight of different weight weight and flap so that
Different flap opening degrees are realized, it is to be capable of achieving different controlling extents to change one of variable, whole not pacify by electric energy
It is complete reliable.
The structure that the utility model is not pointed out is those skilled in the art's common structure to be known, the utility model
The connected mode do not pointed out is those skilled in the art's conventional connected mode to be known.
The above, is only preferred embodiment of the present utility model, is not to make other forms to the utility model
Limitation, any those skilled in the art are changed possibly also with the technology contents of the disclosure above or are modified as equivalent
The Equivalent embodiments of change.But it is every without departing from technical solutions of the utility model content, according to technology reality of the present utility model
Any simple modification, equivalent variations and remodeling that confrontation above example is made, still fall within the guarantor of technical solutions of the utility model
Shield scope.
Claims (6)
1. a kind of dust back pressure flame proof valve, including valve body（1）, flap（2）, it is characterised in that：The valve body（1）Interior one is fixed
Inclined end face is installed（22）, flap（2）With flap rocking bar（3）It is fixedly connected, flap rocking bar（3）Upper end is fixed with locating shaft
（8）, inclined end face（22）Side is installed with limiting plate（7）, locating shaft（8）Be installed on valve body（1）Outer transmission device
Connection, bonnet（6）With valve body（1）It is fixedly connected, bonnet（6）Upper and valve body（1）Contact position gasket seal is installed（23）.
2. dust back pressure flame proof valve according to claim 1, it is characterised in that：The locating shaft（8）Install fixed in outer end
Position swivel nut（19）, locating shaft（8）In positioning thread insert（19）It is interior to relatively rotate, positioning thread insert（19）Outer end mounting O-shaped sealing ring
（20）, O-ring seal（20）Upper installation axle elastic block piece（21）.
3. dust back pressure flame proof valve according to claim 1, it is characterised in that：The transmission device includes weight, weight
With self-locking rocking bar（24）It is fixedly connected, self-locking rocking bar（24）It is provided with gear grooved（11）, self-locking rocking bar（24）Side is provided with projection
（13）, valve body（1）It is provided with and projection（13）The groove for matching（14）, groove（14）Bottom is provided with rib（12）, locating shaft
（8）End is fixed with and gear grooved（11）The gear for matching（10）.
4. dust back pressure flame proof valve according to claim 3, it is characterised in that：The weight includes base（16）, vertically
Base（16）The axis of fixed installation（18）, axis（18）On can cover and put heavy punch piece（17）.
5. dust back pressure flame proof valve according to claim 1, it is characterised in that：The valve body（1）End is provided with explosion-proof
Screen cloth（28）, explosion-proof screen cloth（28）It is provided with through hole（27）.
6. dust back pressure flame proof valve according to claim 1, it is characterised in that：The valve body（1）Side connects indifferent gas
Body pipe（25）, inert gas tube（25）Magnetic valve is inside installed（26）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621443591.0U CN206299850U (en) | 2016-12-27 | 2016-12-27 | A kind of dust back pressure flame proof valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621443591.0U CN206299850U (en) | 2016-12-27 | 2016-12-27 | A kind of dust back pressure flame proof valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206299850U true CN206299850U (en) | 2017-07-04 |
Family
ID=59204311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621443591.0U Expired - Fee Related CN206299850U (en) | 2016-12-27 | 2016-12-27 | A kind of dust back pressure flame proof valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206299850U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106481854A (en) * | 2016-12-27 | 2017-03-08 | 闫正伟 | A kind of dust back pressure flame proof valve |
| CN112728172A (en) * | 2020-12-31 | 2021-04-30 | 青海中控太阳能发电有限公司 | High-temperature fluid is with can ending check valve and valve clack processing equipment thereof |
-
2016
- 2016-12-27 CN CN201621443591.0U patent/CN206299850U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106481854A (en) * | 2016-12-27 | 2017-03-08 | 闫正伟 | A kind of dust back pressure flame proof valve |
| CN112728172A (en) * | 2020-12-31 | 2021-04-30 | 青海中控太阳能发电有限公司 | High-temperature fluid is with can ending check valve and valve clack processing equipment thereof |
| CN112728172B (en) * | 2020-12-31 | 2023-01-10 | 青海中控太阳能发电有限公司 | High-temperature fluid is with can ending check valve and valve clack processing equipment thereof |
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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: 20170704 Termination date: 20171227 |