CN207554894U - A kind of manhole fire-retardant breather valve - Google Patents
A kind of manhole fire-retardant breather valve Download PDFInfo
- Publication number
- CN207554894U CN207554894U CN201721662451.7U CN201721662451U CN207554894U CN 207554894 U CN207554894 U CN 207554894U CN 201721662451 U CN201721662451 U CN 201721662451U CN 207554894 U CN207554894 U CN 207554894U
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- China
- Prior art keywords
- manhole
- limited block
- venthole
- piston
- valve body
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Abstract
The utility model discloses a kind of manhole fire-retardant breather valves, belong to back-fire relief breathing manhole technical field.It includes manhole casing, cover board, breathing valve body, piston, flame retardant bed, limited block, sliding chamber lid, spring；The ring flange of the manhole sleeve bottom and tank body manhole is fixed, and cover plate for sealing is fixed on manhole cannula tip, and manhole sleeve side walls transverse sealing is welded with breathing valve body.By the way that breather valve sealing structure is welded on manhole casing side, breathing is detached with manhole, and the two function is independent of each other, and can be more convenient to open manhole；Breather valve is designed using piston and dual spring, when spring is in equilibrium state, venthole is closed by breathing valve body, when limited block slides to limit sliding chutes gas vent side, venthole is overlapped with gas vent, can be vented, when limited block slides to limit sliding chutes air admission hole side, venthole is overlapped with air admission hole, can save cost with air inlet.
Description
Technical field
The utility model is related to a kind of manhole fire-retardant breather valves, belong to back-fire relief breathing manhole technical field.
Background technology
Breathing manhole is a kind of equipment that breather valve function is combined on manhole, is to safeguard storage tank inside and outside air pressure balance,
Reduce the energy-saving safe product of medium volatilization.Breathing manhole makes full use of the bearing capacity of storage tank in itself to reduce media discharge.
Its operation principle is provided with breather cheek valve and one-way exhaust valve arrangement, when tank body inside and outside air pressure balance, breather cheek valve and
One-way exhaust valve is in closed state, and not air inlet is not also vented, and reduces interior media volatilization；When past tank extracts medium, tank out outside
When body is in negative pressure state, breather cheek valve is opened, and air, which enters, maintains air pressure balance in tank body；When being filled with medium in tank,
When tank body is in high pressure conditions, one-way exhaust valve is opened, and makes the air pressure balance in tank and outside tank, to protect the safety of storage tank.Resistance
Fiery breathing manhole is exactly to add flame retardant bed in gas respiration channel.
At present, the breather cheek valve of breathing manhole and one-way exhaust valve are using independent valve body, and cost is higher, and installation is inconvenient.
The breather cheek valve and one-way exhaust valve of some breathing manholes are combined with manhole structure, open manhole need first to remove valve body and
Flame retardant bed is entered in tank body by manhole and overhauls, cleans, and dismounting is very inconvenient.
Invention content
The technical problem to be solved by the utility model is to：A kind of manhole fire-retardant breather valve is provided, it is solved at present
Fire-retardant breather valve combined with manhole, lead to manhole inconvenient problem with use.
Technical problem to be solved in the utility model takes following technical scheme to realize：
A kind of manhole fire-retardant breather valve, it includes manhole casing, cover board, breathing valve body, piston, flame retardant bed, limited block, cunning
Chamber lid, spring；
The ring flange of the manhole sleeve bottom and tank body manhole is fixed, and cover plate for sealing is fixed on manhole cannula tip, people
Hole sleeve side wall transverse sealing is welded with breathing valve body；
Limit sliding chutes are equipped on the upside of the breathing valve body, air admission hole and gas vent is equipped on the downside of breathing valve body, breathes valve body
Inner cavity is equipped with piston, and the gas passage of one end open is equipped in piston, is put into flame retardant bed in gas passage, gas passage side wall is opened
Equipped with venthole, gas passage connects venthole with manhole casing, and piston on the side is equipped with limited block, and limited block is put into limiting and slides
In slot, sliding chamber lid is fixed on breather valve and in vitro seals limit sliding chutes, and limited block both sides are respectively equipped with spring, spring end against
In sliding chamber lid end, when spring is in equilibrium state, limited block is in the middle part of limit sliding chutes, and venthole is by breathing valve body at this time
Closing, when limited block slides to limit sliding chutes gas vent side, venthole is overlapped with gas vent, when limited block slides to limit sliding chutes
During air admission hole side, venthole is overlapped with air admission hole.
As preferred embodiment, the flame retardant bed uses ripple back-fire relief net.
As preferred embodiment, sealing ring is equipped between the piston and breathing valve body, is sealed between the two by sealing ring,
Sealing ring is sleeved on piston close to the end of manhole casing side.
As preferred embodiment, the breather valve is external open-ended by the way that the protective cover with spiracle is set to close.
Embedded transparent windows are sealed as preferred embodiment, in the sliding chamber lid.
The beneficial effects of the utility model are：By the way that breather valve sealing structure is welded on manhole casing side, breathing with
Manhole detaches, and the two function is independent of each other, and can be more convenient to open manhole；Breather valve is designed using piston and dual spring, works as bullet
When spring is in equilibrium state, venthole is closed by breathing valve body, when limited block slides to limit sliding chutes gas vent side, venthole
It overlaps, can be vented with gas vent, when limited block slides to limit sliding chutes air admission hole side, venthole is overlapped with air admission hole, can
With air inlet, cost is saved；Sealing ring is equipped between piston and breathing valve body, improves the air-tightness of piston；It is held in vitro in breather valve
Portion sets the protective cover with spiracle, prevents dust rainwater from entering.
Description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the utility model exhaust condition structure diagram；
Fig. 3 is the utility model air-suction state structure diagram.
In figure：Manhole casing 1, cover board 2 breathe valve body 3, limit sliding chutes 31, air admission hole 32, gas vent 33, piston 4, gas
Body channel 41, venthole 42, flame retardant bed 5, limited block 6, sliding chamber lid 7, spring 8, sealing ring 9, protective cover 10, spiracle 11, thoroughly
Bright observation window 12.
Specific embodiment
In order to which the technical means, creative features, achievable purpose and effectiveness to the utility model are easy to understand, tie below
Conjunction is specifically illustrating, and the utility model is expanded on further.
As shown in Figure 1-Figure 3, a kind of manhole fire-retardant breather valve, it includes manhole casing 1, cover board 2, breathing valve body 3, piston
4th, flame retardant bed 5, limited block 6, sliding chamber lid 7, spring 8；
1 bottom of manhole casing and the ring flange of tank body manhole（It is not drawn into figure）Fixed, the sealing of cover board 2 is fixed on manhole set
1 top of pipe, 1 side wall transverse sealing of manhole casing are welded with breathing valve body 3；
It breathes 3 upside of valve body and is equipped with limit sliding chutes 31,3 downside of breathing valve body is equipped with air admission hole 32 and gas vent 33, breathing
3 inner cavity of valve body is equipped with piston 4, and the gas passage 41 of one end open is equipped in piston 4, flame retardant bed 5, gas are put into gas passage 41
41 side wall of body channel offers venthole 42, and gas passage 41 connects venthole 42 with manhole casing 1, and 4 upside of piston is equipped with
Limited block 6, limited block 6 are put into limit sliding chutes 31, and sliding chamber lid 7 is fixed on outside breathing valve body 3 and seals limit sliding chutes 31, limits
6 both sides of block are respectively equipped with spring 8, and 8 end of spring is resisted against sliding 7 end of chamber lid, when spring 8 is in equilibrium state, limited block 6
In 31 middle part of limit sliding chutes, venthole 42 is closed by breathing valve body 3 at this time, when limited block 6 slides to 31 gas vent of limit sliding chutes
During 33 side, venthole 42 is overlapped with gas vent 33, when limited block 6 slides to 31 32 side of air admission hole of limit sliding chutes, venthole
42 overlap with air admission hole 32.
Flame retardant bed 5 uses ripple back-fire relief net.
Sealing ring 9 is equipped between piston 4 and breathing valve body 3, is sealed between the two by sealing ring 9, sealing ring 9 is sleeved on work
Plug 4 is close to the end of 1 side of manhole casing.
3 outer end of breathing valve body opening is by setting the protective cover 10 with spiracle 11 to close.
The embedded transparent windows 12 of sealing in sliding chamber lid 7.
Operation principle：（1）When tank body inside and outside air pressure balance, two lateral springs 8 of limited block 6 are in equilibrium state, limit
Position block 6 is in 31 middle part of limit sliding chutes, and venthole 42 is closed by breathing valve body 3 at this time, prevents medium volatilization escape；（2）When to
Medium is filled in tank body, air pressure pushes piston 4 to gas vent 33 side, and limited block 6 slides to 31 gas vent of limit sliding chutes, 33 side
Behind end, venthole 42 is overlapped with gas vent 33, and internal gas is discharged from 4 gas passage 41 of piston through gas vent 33, in holding
Portion balances；（3）When taking out medium out of tank body, inside forms negative pressure, and piston 4 slides to 32 side of air admission hole, and limited block 6 slides to
Behind 31 air admission hole of limit sliding chutes, 32 1 side end, venthole 42 is overlapped with air admission hole 32, and tank interior starts air inlet, inside and outside maintenance
Pressure balance.
The basic principle of the utility model and main feature and the advantages of the utility model has been shown and described above.One's own profession
The technical staff of industry it should be appreciated that the present utility model is not limited to the above embodiments, do not depart from the spirit of the present invention and
Under the premise of range, the present invention also has various changes and improvements, these changes and improvements both fall within the utility model will
In the range of asking protection.The protection scope of the present invention is defined by the appended claims and their equivalents.
Claims (5)
1. a kind of manhole fire-retardant breather valve, it is characterised in that：It include manhole casing, cover board, breathing valve body, piston, flame retardant bed,
Limited block, sliding chamber lid, spring；
The ring flange of the manhole sleeve bottom and tank body manhole is fixed, and cover plate for sealing is fixed on manhole cannula tip, manhole set
Pipe side wall transverse sealing is welded with breathing valve body；
Limit sliding chutes are equipped on the upside of the breathing valve body, air admission hole and gas vent is equipped on the downside of breathing valve body, breathes body cavity
Equipped with piston, the gas passage of one end open is equipped in piston, is put into flame retardant bed in gas passage, gas passage side wall offers
Venthole, gas passage connect venthole with manhole casing, and piston on the side is equipped with limited block, and limited block is put into limit sliding chutes
Interior, sliding chamber lid is fixed on breather valve and in vitro seals limit sliding chutes, and limited block both sides are respectively equipped with spring, and spring end is resisted against
Sliding chamber lid end, when spring is in equilibrium state, limited block is in the middle part of limit sliding chutes, and venthole is sealed by breathing valve body at this time
Close, when limited block slides to limit sliding chutes gas vent side, venthole is overlapped with gas vent, when limited block slide to limit sliding chutes into
During stomata side, venthole is overlapped with air admission hole.
2. a kind of manhole fire-retardant breather valve according to claim 1, it is characterised in that：The flame retardant bed uses ripple back-fire relief
Net.
3. a kind of manhole fire-retardant breather valve according to claim 1, it is characterised in that：It is set between the piston and breathing valve body
There is sealing ring, sealed between the two by sealing ring, sealing ring is sleeved on piston close to the end of manhole casing side.
4. a kind of manhole fire-retardant breather valve according to claim 1, it is characterised in that：The breather valve is external open-ended logical
Cross protective cover closing of the setting with spiracle.
5. a kind of manhole fire-retardant breather valve according to claim 1, it is characterised in that：It is transparent that insertion is sealed in the sliding chamber lid
Observation window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721662451.7U CN207554894U (en) | 2017-12-04 | 2017-12-04 | A kind of manhole fire-retardant breather valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721662451.7U CN207554894U (en) | 2017-12-04 | 2017-12-04 | A kind of manhole fire-retardant breather valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207554894U true CN207554894U (en) | 2018-06-29 |
Family
ID=62677275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721662451.7U Expired - Fee Related CN207554894U (en) | 2017-12-04 | 2017-12-04 | A kind of manhole fire-retardant breather valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207554894U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253292A (en) * | 2018-11-28 | 2019-01-22 | 大连英蕴科技有限公司 | A kind of ship vent valve and air pressure balance method |
| CN109854792A (en) * | 2018-12-21 | 2019-06-07 | 青州耐威智能科技有限公司 | A kind of unmanned sump two-way air vent valve |
| CN111776504A (en) * | 2020-08-05 | 2020-10-16 | 山东泰东环保科技股份有限公司 | Liquid level indicating device suitable for underground liquid storage tank |
-
2017
- 2017-12-04 CN CN201721662451.7U patent/CN207554894U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253292A (en) * | 2018-11-28 | 2019-01-22 | 大连英蕴科技有限公司 | A kind of ship vent valve and air pressure balance method |
| CN109253292B (en) * | 2018-11-28 | 2023-11-03 | 大连英蕴科技有限公司 | Air-permeable valve for ship and air pressure balancing method |
| CN109854792A (en) * | 2018-12-21 | 2019-06-07 | 青州耐威智能科技有限公司 | A kind of unmanned sump two-way air vent valve |
| CN111776504A (en) * | 2020-08-05 | 2020-10-16 | 山东泰东环保科技股份有限公司 | Liquid level indicating device suitable for underground liquid storage tank |
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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 |
Granted publication date: 20180629 Termination date: 20191204 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |