CN110285245A - A kind of breathing valve core - Google Patents
A kind of breathing valve core Download PDFInfo
- Publication number
- CN110285245A CN110285245A CN201910535844.9A CN201910535844A CN110285245A CN 110285245 A CN110285245 A CN 110285245A CN 201910535844 A CN201910535844 A CN 201910535844A CN 110285245 A CN110285245 A CN 110285245A
- Authority
- CN
- China
- Prior art keywords
- valve
- gasket
- sealing film
- disc lid
- valve rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000029058 respiratory gaseous exchange Effects 0.000 title claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 48
- 238000003825 pressing Methods 0.000 claims abstract description 17
- 238000012856 packing Methods 0.000 claims abstract description 4
- 238000005192 partition Methods 0.000 claims description 15
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 2
- 206010044565 Tremor Diseases 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 5
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/18—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on either side
- F16K17/19—Equalising valves predominantly for tanks
- F16K17/194—Equalising valves predominantly for tanks weight-loaded
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a kind of breathing valve cores, including, valve rod；Valve rod is fixed on the center of hard valve disc lid；The first gasket that diameter is less than valve disc lid is close in the lower surface of valve disc lid, and the center of the first gasket is fixed with valve rod；The outer edge of first gasket is equipped with toward central concave and plays fenestra；It is close to the sealing film of flexible annular structure in the lower surface of the first gasket, and there are air ducts between the inside edge profile of ring packing film and the bottom for playing fenestra recess；Seal outer edge of the inward flange less than the first gasket of film；It is close to the hard pressing plate that center is fixed on valve rod in sealing film lower surface, the outer profile of pressing plate is greater than the Internal periphery of sealing film, and is less than the outer profile of sealing film；Contiguity is touched and constitutes air-tight section.The utility model has the advantages that using that can replace the sealing means of traditional structure with the sealing film of deformation flexible material, effectively raise the reaction sensitivity of breather valve, and thoroughly solve the problems, such as that traditional breather valve is easy to happen and tremble.
Description
Technical field
The present invention relates to breather valve fields, and in particular to a kind of breathing valve core.
Background technique
Breather valve is maintenance cartridge gas pressure balance, while reducing the device of medium volatilization.When the pressure of the gas compartment in tank
Decline, when reaching the operation vacuum of breather valve, the vacuum valve disc of breather valve is opened, and ambient atmos enter in tank, meanwhile, when in tank
After low vacuum disappears, vacuum valve disc can be closed rapidly；When the pressure rise of the gas compartment in tank, reach the operation pressure of breather valve
When power, the pressure valve disc of breather valve is opened, gas discharge in tank, meanwhile, when pressure inside the tank drops to permissible value, pressure valve disc
It can close rapidly.
In this regard, the regulation in professional standard " Petroleum Storage Tank breather valve " in 2016: when carrying out gas of oil storage tank improvement,
The amount of releasing when breather valve need to be arranged in tank deck, and breather valve 75% being required to open is no more than 0.04m3/h.
In entire breather valve, working centre component is breathing valve core；But current breather valve primary structure is
Sealing film is squeezed by the gravity and valve seat of valve disc itself, makes to seal film generation elastic deformation, to reach sealing effect.It is this
Spool has the drawback that: when pressure inside the tank has not yet been reached cracking pressure or reaches the 75% of cracking pressure, due to interior
The unbalanced of the evolution of portion's air pressure will lead to entire breather valve valve disc and start to tremble.Just because of this, so that valve leaks gas
Amount is much larger than defined 0.04m3/h.At this point, having water vapour and dust, material condensation if sealing the joint, can also to prevent
Freeze effect to be deteriorated, influences the flexibility of valve disc component unlatching.
Chinese patent CN201343272 discloses a kind of breather valve, wherein the sealing for breather valve uses cone, circle
The structure of cylinder or ball ball solves sealing problem.But the sealing structure of this structure still will appear by a small margin
It trembles；Good sealing effect can not be played.And for the solid particulate matter of adherency, the file of the disclosure still not compared with
Good solution.
Summary of the invention
In order to solve the problems such as breathing valve core trembles, a kind of currently proposed breathing valve core of the present invention:
A kind of breathing valve core, including, valve rod；The valve rod is fixed on the center of hard valve disc lid；The valve disc lid
The first gasket that diameter is less than valve disc lid is close in lower surface, and the center of the first gasket is fixed with valve rod；First gasket
Outer edge be equipped with toward central concave rise fenestra；It is close to flexible annular structure in the lower surface of the first gasket and valve disc lid
Sealing film, and the inside edge profile of ring packing film and rise fenestra recess bottom between there are air ducts；The sealing
Outer edge of the inward flange of film less than the first gasket；The lower surface at the first gasket center successively stack from top to bottom hard every
Plate and diameter are less than the pressing plate of partition, and the diameter dimension of partition is less than the size of skinning hole bottom, the center of partition and pressing plate
It is each attached on valve rod；And the gap that partition and pressing plate occur by difference in height is communicated with the air duct；The sealing film
Outer peripheral upper surface and the outer peripheral lower surface of valve disc lid are in close contact and constitute air-tight section.
It is close to annular compression ring in the lower surface of a specific embodiment of the invention, the sealing film；The pressure ring, sealing film
Air-tight section fixed with valve disc lid by mechanical pressure.
A specific embodiment of the invention, the mechanical pressure include the stud that several are arranged in air-tight section；The spiral shell
Column sequentially passes through valve disc lid, air-tight section and pressure ring, is connected in the free end of stud by nut.
The lower surface of a specific embodiment of the invention, the pressing plate is equipped with the positioning thread insert fixed with valve rod.
A specific embodiment of the invention, the valve rod are equipped with perforative fixation hole, and fixation hole interpolation limitation it is fixed
The fixed pin of position swivel nut rotation.
A specific embodiment of the invention, the quantity of described fenestra is several, and uniformly annular is distributed in valve rod
Around.
A specific embodiment of the invention, the valve disc lid and the first gasket are to be threadedly coupled with the fixed form of valve rod.
Compared with prior art, the invention has the following beneficial effects:
Using can replace the sealing means of traditional structure with the sealing film of deformation flexible material, effectively raise breather valve
Reaction sensitivity, and thoroughly solve the problems, such as that traditional breather valve is easy to happen and tremble.
Detailed description of the invention
Fig. 1 is stereochemical structure cross-sectional view of the invention；
Fig. 2 is the partial schematic diagram in Fig. 1 at c；
Fig. 3 is full sectional view of the invention；
Fig. 4 is explosive view of the invention；
When Fig. 5 is that pressure reaches set point 75%, the connection status diagram of film and valve seat is sealed；
When Fig. 6 is that pressure reaches set point 90%, the connection status diagram of film and valve seat is sealed；
When Fig. 7 is that pressure reaches set point, the connection status diagram of film and valve seat is sealed.
In figure, 1 valve rod, 11 fixation holes, 12 valve seats, 2 valve disc lids, 3 first gaskets, 31 fenestras, 4 sealing films, 41 gas
Mi Qu, 5 partitions, 6 pressing plates, 7 pressure rings, 8 studs, 81 nuts, 9 positioning thread inserts, 91 fixed pins.
Specific embodiment
Invention is further described in detail in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, a kind of breathing valve core, including, valve rod 1；It is longer in specifically used
The upper surface of valve rod 1 also needs pressing against one piece of weight, utilizes the size of the big minor adjustment cracking pressure of gravity.At the center of valve rod 1
Hard valve disc lid 2 is fixed on position；Specifically, valve disc lid 2 and the first gasket 3 are to be threadedly coupled with the fixed form of valve rod 1,
The hard structure of valve disc lid 2 can not only support the weight on valve rod 1, moreover it is possible to play the role of the entire spool of support.In valve
The first gasket 3 that diameter is less than valve disc lid 2 is close in the lower surface of disk cover 2, and the center of the first gasket 3 and valve rod 1 are fixed.
In order to guarantee that the smooth of gas flowing, the first gasket 3 are also possible to hard structure, and in the outer of the first gasket 3
Edge be equipped with toward central concave rise fenestra 31, rise fenestra 31 quantity be several, and uniformly annular be distributed in valve rod 1 week
It encloses.Specific structure for playing fenestra 31 can be the other structures such as semicircle or triangle, as shown in Fig. 1, the
It is close to the sealing film 4 of flexible annular structure, and the inside edge profile of ring packing film 4 in the lower surface of one gasket 3 and valve disc lid 2
There are air ducts between the bottom being recessed with fenestra 31.The specific location of air duct plays 31 bottom of fenestra in fig. 1
Arc and the region that surrounds of sealing 4 inner ring profile of film.It is flowed for the ease of the gas of air duct, in the inner edge of sealing film 4
Edge less than the first gasket 3 outer edge when, the first gasket 3 and sealing film 4 have the position for being overlapped intersection, utilize this intersection
Difference in height will form one and rapidly enter valve disc lid 2 convenient for gas and seal the gap between film 4, as shown in Fig. 2.
As shown in figure 1, in order to ensure sealing the reliable and stable of film 4, the lower surface at 3 center of the first gasket is successively folded from top to bottom
It puts hard partition 5 and diameter is less than the pressing plate 6 of partition 5, and the diameter dimension of partition 5 has been less than the size of 31 bottom of fenestra,
The center of partition 5 and pressing plate 6 is each attached on valve rod 1；And the gap that occurs by difference in height of partition 5 and pressing plate 6 and the sky
Gas channel communicates.
Shown in Fig. 1, in order to which sealing film 4 can be deformed after high pressure gas entrance, the outer peripheral upper table of film 4 is sealed
Face and the outer peripheral lower surface of valve disc lid 2 are in close contact and constitute air-tight section 41.After forming air-tight section 41, but gas enter it is close
After sealer 4, sealing film 4 can be allowed to strut with the frame mode of similar balloon, form state as shown in Figure 6.
As shown in Fig. 1, when forming air-tight section 41, in order to obtain sufficiently stable airtight construction, the sealing film 4
It is close to annular compression ring 7 in lower surface；The pressure ring 7, the air-tight section 41 for sealing film 4 are fixed with valve disc lid 2 by mechanical pressure.Tool
The mechanical pressure of body may include the stud 8 that several are arranged in air-tight section 41；The stud 8 sequentially passes through valve disc lid 2, airtight
Area 41 and pressure ring 7 are connected in the free end of stud 8 by nut 81.
In total, the fixing means of pressing plate 6 is: the lower surface of the pressing plate 6 is equipped with the positioning fixed with valve rod 1
Swivel nut 9.The valve rod 1 be equipped with perforative fixation hole 11, and 11 interpolation of fixation hole limitation positioning thread insert 9 rotate fixed pin
91。
The working principle of the invention:
As shown in Figure 1 and Figure 2, after device has weight on the valve rod of breather valve 1, the sealing of weight meeting presses flexible material
Film 4 directly contacts valve seat 12, when being full of the little gas of pressure in pipeline, gas can from below spool pressing plate 6 and every
Gap between plate 5 enters air duct, finally enters the space between sealing film 4 and valve disc lid 2；Working condition at this time with
Attached drawing 5 is consistent.
In figure 6, when manifold pressure gradually rises, when close to set point 75%, due to sealing 4 flexible material of film
Expansion power can be less than the lower pressure of weight, and raised air pressure can be introduced into the space between sealing film 4 and valve disc lid 2 in advance,
It allows sealing film 4 in the preparatory dilatancy in region close to air-tight section 41, forms the sealing around 12 outer profile of valve seat
Circle.May insure using this sealing ring in predetermined pressure 75%, will not because of trembling, caused by gas leak.
In the sealing film 4 of 6 state of attached drawing, lead to dilatancy since gas struts sealing film 4, outside valve seat 12
Edge constitutes raised sealing ring, can be squeezed using the sealing ring of the protrusion be adhered to valve seat 12 or seal film 4 on consolidating
Body impurity or greasy dirt solve the problems, such as that breather valve seal spool effect is bad in the prior art with this.
In Fig. 7, when the pressure of pipeline is gradually increased to enough hold up the weight on breather valve, breather valve is close at this time
Sealer 4 directly lifts up, and then seals the air pressure moment forfeiture among film 4 and valve disc lid 2, and seal film 4 and quickly recover to
Normal condition, then gas overflows below sealing film 4.
The present invention makes full use of the plastic deformation of sealing film 4, efficiently solves when pressure is less than predetermined pressure 75%, just
There is gas to escape and breathe the problem of valve disc trembles, improves the accuracy of breather valve.
Claims (7)
1. a kind of breathing valve core, it is characterised in that: including valve rod (1)；
The valve rod (1) is fixed on the center of hard valve disc lid (2)；
The lower surface of the valve disc lid (2) it is close to the first gasket (3) that diameter is less than valve disc lid (2), and the first gasket (3)
Center and valve rod (1) are fixed；The outer edge of first gasket (3) is equipped with toward central concave and plays fenestra (31)；
It is close to the sealing film (4) of flexible annular structure, and ring packing in the lower surface of the first gasket (3) and valve disc lid (2)
There are air ducts between the inside edge profile of film (4) and the bottom for playing fenestra (31) recess；The inward flange of sealing film (4)
Less than the outer edge of the first gasket (3)；
The lower surface at the first gasket (3) center successively stacks hard partition (5) from top to bottom and diameter is less than the pressure of partition (5)
Plate (6), and the diameter dimension of partition (5) has been less than the size of fenestra (31) bottom, the center of partition (5) and pressing plate (6) is solid
It is scheduled on valve rod (1)；And the gap that partition (5) and pressing plate (6) occur by difference in height is communicated with the air duct；
The outer peripheral upper surface of the sealing film (4) and valve disc lid (2) outer peripheral lower surface are in close contact and constitute air-tight section
(41).
2. breathing valve core according to claim 1, it is characterised in that: be close to ring in the lower surface of sealing film (4)
Shape pressure ring (7)；The pressure ring (7), the air-tight section (41) for sealing film (4) are fixed with valve disc lid (2) by mechanical pressure.
3. breathing valve core according to claim 2, it is characterised in that: the mechanical pressure includes that several are arranged in gas
The stud (8) of Mi Qu (41)；The stud (8) sequentially passes through valve disc lid (2), air-tight section (41) and pressure ring (7), in stud (8)
Free end pass through nut (81) connect.
4. breathing valve core according to claim 1, it is characterised in that: the lower surface of the pressing plate (6) is equipped with and valve rod
(1) fixed positioning thread insert (9).
5. breathing valve core according to claim 4, it is characterised in that: the valve rod (1) is equipped with perforative fixation hole
(11), and fixation hole (11) interpolation limitation positioning thread insert (9) rotation fixed pin (91).
6. breathing valve core according to claim 1, it is characterised in that: the quantity of described fenestra (31) is several,
And uniformly annular is distributed in around valve rod (1).
7. breathing valve core according to claim 1, it is characterised in that: the valve disc lid (2) and the first gasket (3) and valve
The fixed form of bar (1) is to be threadedly coupled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910535844.9A CN110285245A (en) | 2019-06-20 | 2019-06-20 | A kind of breathing valve core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910535844.9A CN110285245A (en) | 2019-06-20 | 2019-06-20 | A kind of breathing valve core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110285245A true CN110285245A (en) | 2019-09-27 |
Family
ID=68003961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910535844.9A Pending CN110285245A (en) | 2019-06-20 | 2019-06-20 | A kind of breathing valve core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110285245A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024060697A1 (en) * | 2022-09-22 | 2024-03-28 | 北京航天石化技术装备工程有限公司 | Breather valve core and breather valve |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB674643A (en) * | 1950-01-06 | 1952-06-25 | Whessoe Ltd | Improvements in fluid flow control devices or valves |
| GB735054A (en) * | 1952-08-26 | 1955-08-10 | Albert Ernest Jurs | Flow control device for controlling gaseous fluids |
| US4550746A (en) * | 1983-08-11 | 1985-11-05 | Kosan Teknova A/S | Regulator for mounting on the outlet connection of a gas cylinder or like container |
| CN2150413Y (en) * | 1993-03-23 | 1993-12-22 | 中国石化北京设计院 | Fire-retardant breather valve for oil tank |
| US5819793A (en) * | 1997-06-27 | 1998-10-13 | Rajewski; Robert Karl | Breather valve |
| RU2224158C2 (en) * | 2002-03-25 | 2004-02-20 | Общество с ограниченной ответственностью фирма "Саратовгазприборавтоматика" | Method of sealing pressure and vacuum shutoff members of breathing valve of preservoirs containing highly volatile liquids |
| KR20120091916A (en) * | 2011-02-10 | 2012-08-20 | 주식회사 코밸 | Pilot operating type relief valve |
| CN105749443A (en) * | 2016-04-22 | 2016-07-13 | 何长江 | Cleanable membrane breather valve |
| CN206409694U (en) * | 2017-01-22 | 2017-08-15 | 长城汽车股份有限公司 | Breather valve |
| CN210344424U (en) * | 2019-06-20 | 2020-04-17 | 徐州八方安全设备有限公司 | Valve core of breather valve |
-
2019
- 2019-06-20 CN CN201910535844.9A patent/CN110285245A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB674643A (en) * | 1950-01-06 | 1952-06-25 | Whessoe Ltd | Improvements in fluid flow control devices or valves |
| GB735054A (en) * | 1952-08-26 | 1955-08-10 | Albert Ernest Jurs | Flow control device for controlling gaseous fluids |
| US4550746A (en) * | 1983-08-11 | 1985-11-05 | Kosan Teknova A/S | Regulator for mounting on the outlet connection of a gas cylinder or like container |
| CN2150413Y (en) * | 1993-03-23 | 1993-12-22 | 中国石化北京设计院 | Fire-retardant breather valve for oil tank |
| US5819793A (en) * | 1997-06-27 | 1998-10-13 | Rajewski; Robert Karl | Breather valve |
| RU2224158C2 (en) * | 2002-03-25 | 2004-02-20 | Общество с ограниченной ответственностью фирма "Саратовгазприборавтоматика" | Method of sealing pressure and vacuum shutoff members of breathing valve of preservoirs containing highly volatile liquids |
| KR20120091916A (en) * | 2011-02-10 | 2012-08-20 | 주식회사 코밸 | Pilot operating type relief valve |
| CN105749443A (en) * | 2016-04-22 | 2016-07-13 | 何长江 | Cleanable membrane breather valve |
| CN206409694U (en) * | 2017-01-22 | 2017-08-15 | 长城汽车股份有限公司 | Breather valve |
| CN210344424U (en) * | 2019-06-20 | 2020-04-17 | 徐州八方安全设备有限公司 | Valve core of breather valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024060697A1 (en) * | 2022-09-22 | 2024-03-28 | 北京航天石化技术装备工程有限公司 | Breather valve core and breather valve |
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