CN207989823U - A kind of micro-pressure-difference conducting high flow rate check valve - Google Patents
A kind of micro-pressure-difference conducting high flow rate check valve Download PDFInfo
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- CN207989823U CN207989823U CN201820386425.4U CN201820386425U CN207989823U CN 207989823 U CN207989823 U CN 207989823U CN 201820386425 U CN201820386425 U CN 201820386425U CN 207989823 U CN207989823 U CN 207989823U
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Abstract
A kind of micro-pressure-difference conducting high flow rate check valve, belongs to check valve technical field.It is characterized in that：The valve body（3）It is internally provided with air inlet pipe（10）, air inlet pipe（10）Inner cavity forms preceding inlet chamber（8）, air inlet pipe（10）The valve body in outside（3）Inner cavity forms rear outlet chamber（9）, preceding inlet chamber（8）One end is connected to input port, and the other end is gas vent, and gas outlet is equipped with sealing device, is set with gravity conducting device in sealing device, gravity conducting device can be moved in gas outlet vertical lines.The utility model is isolated in valve inner using air inlet pipe, it is isolated into preceding inlet chamber and rear outlet chamber, and unidirectional gravity force conducting device is set on preceding inlet chamber input port, formation irreversibly delivers, and suitable for the gas circulation of micro-pressure-difference conducting, gas barrier effect is good, thoroughly prevents collaborating between multiple air accumulators.
Description
Technical field
A kind of micro-pressure-difference conducting high flow rate check valve, belongs to check valve technical field.
Background technology
High flow rate check valve, which is connected, in micro-pressure-difference is mounted on for the breathing gas recovering device of the industries wet tank such as chemical industry
In the collection conduit of tidal air, for the unidirectionally controlled of low flow velocity gas.When storage tank is increased because of environment temperature, gas phase is empty in tank
Between gas expansion, pressure of storage tank increase, gas needs let-down vessel to enter tidal air collection conduit, when storage tank rewinding, storage tank
Gas-phase space is compressed, and pressure of storage tank increases, and gas also needs let-down vessel and enters tidal air collection conduit, causes check valve
Preceding tidal air collection conduit pressure rise.But currently, high flow rate check valve is connected due to itself in micro-pressure-difference in the prior art
Structure is not reasonable, causes sealing effect bad, when the gas collection line connection for having multiple storage tanks, the gas that is susceptible between storage tank
Mutually go here and there, the contaminated situation of material in storage tank.Moreover, current micro-pressure-difference conducting check valve cannot meet the fluid of high flow rate
It uses.
Invention content
Technical problem to be solved in the utility model is：It overcomes the deficiencies of the prior art and provide a kind of simple in structure, close
Envelope property is good, gas barrier effect is good, prevents to collaborate, and high flow rate check valve is connected in the micro-pressure-difference for being suitable for high flow rate fluid.
The utility model solve its technical problem the technical solution adopted is that：High flow rate check valve, packet is connected in the micro-pressure-difference
Valve body is included, valve body both sides are correspondingly provided with output port and input port, it is characterised in that：The valve inner is equipped with air inlet pipe,
Air inlet tube cavity forms preceding inlet chamber, and the body cavity on the outside of air inlet pipe forms rear outlet chamber, preceding inlet chamber one end connection input
Port, the other end are gas vent, and gas outlet is equipped with sealing device, gravity conducting device, gravity are set in sealing device
Conducting device can be moved in gas outlet vertical lines.
The utility model changes the structure type of traditional check valve, is isolated using air inlet pipe in valve inner, every
From at preceding inlet chamber and rear outlet chamber, and unidirectional gravity force conducting device is set on preceding inlet chamber input port, as a result, from input
The gas that port enters air inlet pipe can be exported smoothly from output port, and the gas that air inlet pipe is entered from output port can not be from defeated
Inbound port exports, and formation irreversibly delivers, and suitable for the gas circulation of micro-pressure-difference conducting, gas barrier effect is good, thoroughly prevents
Collaborating between multiple air accumulators.Furthermore it can also be by can be realized in the gravity conducting device that gas outlet floats up and down
The variation of system pressure size is freely adjusted by floating up and down for gravity conducting device, realizes the defeated of large flow fluid
Send demand.
The gravity conducting device includes diaphragm fixed ring, limit diaphragm, guide post orifice plate and guiding trestle, is oriented to post holes
Plate is arranged for T-type, and top is the plate body with air hole, and plate body lower part connects the guide post being vertically arranged, the sealing device inside
Guiding trestle is installed, guiding trestle, which is equipped with, allows the through-hole that guide post lower part passes through, guiding trestle be fixedly mounted on it is described into
In tracheae outlet, guide post lower end is equipped with limited block；It is covered with limit diaphragm at the top of guide post orifice plate, limit diaphragm outer ring passes through film
Piece fixed ring is fixed on guide post orifice plate.
Since the limit diaphragm elasticity of check valve is fine, as long as unidirectional upstream pressure is more than downstream pressure, formation overcomes mantle
The minute-pressure of piece elasticity, elastic limit diaphragm is upwardly-deformed, is peripherally inwardly detached from guide post orifice surface, and plate hole is no longer covered by diaphragm
Lid, check valve are switched on, and gas flows through the hole on the outside of guide post pore plate by sealing face by the hole on the inside of guide post pore plate by sealing face,
Into collection manifold or it is directly entered breathing Flash Gas Compression Skid System.When gas flow rate reaches a certain level, formed at sealing surface
It is upward it is big blow power, when blowing power and adding the weight of its own attachment more than guide post orifice plate, guide post orifice plate will
It moves up, is detached from check valve interior conduit sealing surface, entire check valve interior conduit outlet is opened, and gas high speed flows through.Work as storage
Tank is because environment temperature reduces, gas-phase space contraction of gas in tank, and pressure of storage tank reduces or when material delivering, and storage tank gas-phase space increases,
Pressure of storage tank reduces, and unidirectional upstream pressure can be caused to be less than unidirectional downstream pressure at this time, and guide post orifice plate is covered in air inlet again
On pipe exit seal face, limit diaphragm encloses guide post orifice plate, the gas after check valve because being covered on guide post orifice plate from gravity
Body cannot flow back into storage tank.When the gas collection line connection for there are multiple storage tanks, gas barrier has just been carried out by respective check valve,
The gas that will not be formed between storage tank is mutually gone here and there, to which the material ensured in storage tank is not contaminated.
For the spatter property of fluid, filter device can be increased in input port, prevent foreign matter to be attached on limit diaphragm, lead
It causes diaphragm that cannot close the trepanning being oriented on post holes plate, causes to leak.It can be produced by the component friction of unlike material for fluid
Static conductive material can be used in raw electrostatic, limit diaphragm；For different material corrosivity, diaphragm chooses unlike material, but must have
Elasticity well.
The air inlet pipe is arranged for arc, and air inlet pipe outlet is arranged upward.
The outer diameter of the guide post orifice plate and limit diaphragm is all higher than the caliber of the air inlet pipe, the guide post orifice plate
Air hole is equipped with inside and outside two groups, and one group of inside is arranged on the guide post orifice plate of air inlet pipe caliber inner ring corresponding position, outside one
Group is arranged on the outside of the air inlet pipe caliber on the guide post orifice plate of corresponding position.
In order to reach good sealing effect, check valve inner outlet sealing surface can spray soft material, quiet in order not to generate
The soft material of electricity, spraying can use conductive material.The guide post orifice plate rate of climb is too fast in order to prevent, and limited block, which is hit, to be oriented to
Holder can increase soft material gasket on the upside of limiting device.
The body top is equipped with service hatch, mounting flange lid at service hatch.
The output port and input port is equipped with output port flange and input port flange.
Compared with prior art, advantageous effect possessed by the utility model is：
The utility model changes the structure type of traditional check valve, is isolated using air inlet pipe in valve inner, every
From at preceding inlet chamber and rear outlet chamber, and unidirectional gravity force conducting device is set on preceding inlet chamber input port so that, from input
The gas that port enters air inlet pipe can be exported smoothly from output port, and the gas that air inlet pipe is entered from output port can not be from defeated
Inbound port exports, and formation irreversibly delivers, and suitable for the gas circulation of micro-pressure-difference conducting, gas barrier effect is good, thoroughly prevents
Collaborating between multiple air accumulators.Furthermore it can also be by can be realized in the gravity conducting device that gas outlet floats up and down
The variation of system pressure size is freely adjusted by floating up and down for gravity conducting device, realizes the defeated of large flow fluid
Send demand.
Description of the drawings
Fig. 1 is that high flow rate one-way valve structures schematic diagram is connected in micro-pressure-difference.
Wherein, 1, output port flange 2, input port flange 3, valve body 4, blind flange 5, diaphragm fixed ring 6, soft
Diaphragm 7, preceding inlet chamber 9, rear outlet chamber 10, air inlet pipe 11, air inlet pipe exit seal face 12, is oriented to guide post orifice plate 8
Column 13, limited block 14, guiding trestle.
Specific implementation mode
Fig. 1 is the most preferred embodiment of the utility model, and 1 pair of the utility model is described further below in conjunction with the accompanying drawings.
With reference to attached drawing 1：A kind of micro-pressure-difference conducting high flow rate check valve, including valve body 3,3 both sides of valve body are correspondingly provided with output
Port and input port, valve body 3 are internally provided with air inlet pipe 10, and 10 inner cavity of air inlet pipe forms preceding inlet chamber 8,10 outside of air inlet pipe
3 inner cavity of valve body forms rear outlet chamber 9, and 8 one end of preceding inlet chamber is connected to input port, and the other end is gas vent, gas outlet
Equipped with sealing device, it is set with gravity conducting device in sealing device, gravity conducting device can be moved in gas outlet vertical lines
It is dynamic.
Gravity conducting device includes diaphragm fixed ring 5, limit diaphragm 6, guide post orifice plate 7 and guiding trestle 14, is oriented to post holes
Plate 7 is arranged for T-type, and top is the plate body with air hole, and plate body lower part connects the guide post 12 being vertically arranged, pacifies on the inside of sealing device
Guiding trestle 14 is filled, guiding trestle 14, which is equipped with, allows the through-hole that 12 lower part of guide post passes through, guiding trestle 14 to be fixedly mounted on
In the outlet of air inlet pipe 10,12 lower end of guide post is equipped with limited block 13；7 top of guide post orifice plate is covered with limit diaphragm 6, limit diaphragm
6 outer rings are fixed on by diaphragm fixed ring 5 on guide post orifice plate 7.
The outer diameter of guide post orifice plate 7 and limit diaphragm 6 is all higher than the caliber of air inlet pipe 10, and the air hole of guide post orifice plate 7 is set
Two groups inside and outside having, one group of inside is arranged on the guide post orifice plate 7 of 10 caliber inner ring corresponding position of air inlet pipe, the setting of one group of outside
On the outside of 10 caliber of air inlet pipe on the guide post orifice plate 7 of corresponding position.Air inlet pipe 10 is arranged for arc, and air inlet pipe 10 exports upward
Setting.The top of valve body 3 is equipped with service hatch, mounting flange lid 4 at service hatch.Output port and input port are equipped with output port
Flange 1 and input port flange 2.
In order to reach good sealing effect, check valve inner outlet sealing surface can spray soft material, quiet in order not to generate
The soft material of electricity, spraying can use conductive material.The orifice plate rate of climb is too fast in order to prevent, and limited block hits guiding trestle,
Soft material gasket can be increased on the upside of limiting device.
Output port flange 1 and input port flange 2 are used for connecting fluid conveyance conduit, and valve body 3 forms cavity, with unidirectional
Air inlet pipe exit seal face 11 is boundary in valve, forms preceding inlet chamber 8 and rear outlet chamber 9.Cross guiding trestle 14 is welded on list
To valve inner outlet insides of pipes, the guide post 12 with guide post orifice plate 7 passes through guiding trestle 14, by guide post limited block 13,
It is bound in guiding trestle 14, can only move up and down.Guide post orifice plate 7 is covered in air inlet pipe exit seal face 11 in check valve
On, limit diaphragm 6 is fixed on by diaphragm fixed ring 5 on guide post orifice plate 7.Repair blind flange 4 can be opened, for replacing internal group
Part.The trepanning of guide post orifice plate 7 is divided into two parts, and a part of trepanning is located at the inside in air inlet pipe exit seal face 11, a part
Outside positioned at air inlet pipe exit seal face 11.Guide post orifice plate 7 covers on air inlet pipe exit seal face 11, guide post orifice plate 7
Cloth trepanning is divided equally in outside in air inlet pipe exit seal face 11, and whole limit diaphragm 6 is covered on guide post orifice plate 7, periphery edge
It is fixed on guide post orifice plate 7 by diaphragm fixed ring 5, the guide post 12 of guide post orifice plate 7 is in guiding trestle 14, cross not shadow
It rings in fluid flowing, there is limited block 13 in 12 end of guide post, and guide post 12 is prevented to be detached from guiding trestle 14.Guiding trestle 14 is fixed
In 11 sealing surface insides of pipes of air inlet pipe exit seal face.
When one-way valve inlet end pressure is less times greater than outlet end, fluid is located at by guide post orifice plate 7 on the inside of sealing surface
Trepanning jacks up limit diaphragm 6, check valve is flowed out by 11 outer side opening of air inlet pipe exit seal face, with one-way valve inlet end pressure
Increase, when entrance and exit side pressure force difference reaches a certain level, limit diaphragm 6 can drive guide post orifice plate 7 to rise, and be detached from air inlet
Pipe exit seal face 11, fluid is flowed directly out by inner outlet, is discharged by exporting, and big flow is formed.When uniline valve outlet end
When pressure is more than inlet port pressure, guide post orifice plate 7 is pressed on air inlet pipe exit seal face 11, and limit diaphragm 6 is crushed on guide post
On orifice plate 7, closing is oriented to 7 trepanning of post holes plate, and fluid can not flow back, and realize the function of one-way flow.
When storage tank because environment temperature reduces, gas-phase space contraction of gas in tank, pressure of storage tank reduces or when material delivering, storage tank
Gas-phase space increases, and pressure of storage tank reduces, and unidirectional upstream pressure can be caused to be less than unidirectional downstream pressure at this time, limit diaphragm 6 is because certainly
Gravity is covered on guide post orifice plate 7, encloses guide post orifice plate 7, and the gas after check valve cannot flow back into storage tank.It is more when having
When the gas collection line connection of a storage tank, gas barrier is just carried out by respective check valve, the gas that will not be formed between storage tank is mutual
String, to which the material ensured in storage tank is not contaminated.
The above descriptions are merely preferred embodiments of the present invention, is not to make other forms to the utility model
Limitation, any person skilled in the art is changed or is modified as possibly also with the technology contents of the disclosure above equivalent
The equivalent embodiment of variation.But it is every without departing from the content of the technical scheme of the utility model, the technology according to the utility model is real
Any simple modification, equivalent variations and remodeling, still fall within the guarantor of technical solutions of the utility model made by confrontation above example
Protect range.
Claims (6)
1. high flow rate check valve, including valve body is connected in a kind of micro-pressure-difference（3）, valve body（3）Both sides are correspondingly provided with output port and defeated
Inbound port, it is characterised in that：The valve body（3）It is internally provided with air inlet pipe（10）, air inlet pipe（10）Inner cavity forms preceding inlet chamber
（8）, air inlet pipe（10）The valve body in outside（3）Inner cavity forms rear outlet chamber（9）, preceding inlet chamber（8）One end is connected to input port, separately
One end is gas vent, and gas outlet is equipped with sealing device, gravity conducting device, gravity conducting device are set in sealing device
It can be moved in gas outlet vertical lines.
2. high flow rate check valve is connected in a kind of micro-pressure-difference according to claim 1, it is characterised in that：The gravity conducting
Device includes diaphragm fixed ring（5）, limit diaphragm（6）, guide post orifice plate（7）And guiding trestle（14）, guide post orifice plate（7）For T
Type is arranged, and top is the plate body with air hole, and plate body lower part connects the guide post being vertically arranged（12）, sealing device inside peace
Fill guiding trestle（14）, guiding trestle（14）It is equipped with and allows guide post（12）The through-hole that lower part passes through, guiding trestle（14）Gu
Dingan County is mounted in the air inlet pipe（10）In outlet, guide post（12）Lower end is equipped with limited block（13）；Guide post orifice plate（7）Top
It is covered with limit diaphragm（6）, limit diaphragm（6）Outer ring passes through diaphragm fixed ring（5）It is fixed on guide post orifice plate（7）On.
3. high flow rate check valve is connected in a kind of micro-pressure-difference according to claim 1 or 2, it is characterised in that：The air inlet
Pipe（10）It is arranged for arc, air inlet pipe（10）Outlet is arranged upward.
4. high flow rate check valve is connected in a kind of micro-pressure-difference according to claim 2, it is characterised in that：The guiding post holes
Plate（7）And limit diaphragm（6）Outer diameter be all higher than the air inlet pipe（10）Caliber, the guide post orifice plate（7）Air hole set
Two groups inside and outside having, the setting of one group of inside is in air inlet pipe（10）The guide post orifice plate of caliber inner ring corresponding position（7）On, one group of outside
It is arranged in air inlet pipe（10）The guide post orifice plate of corresponding position on the outside of caliber（7）On.
5. high flow rate check valve is connected in a kind of micro-pressure-difference according to claim 1, it is characterised in that：The valve body（3）
Top is equipped with service hatch, mounting flange lid at service hatch（4）.
6. high flow rate check valve is connected in a kind of micro-pressure-difference according to claim 1, it is characterised in that：The output port
It is equipped with output port flange with input port（1）With input port flange（2）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820386425.4U CN207989823U (en) | 2018-03-21 | 2018-03-21 | A kind of micro-pressure-difference conducting high flow rate check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820386425.4U CN207989823U (en) | 2018-03-21 | 2018-03-21 | A kind of micro-pressure-difference conducting high flow rate check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207989823U true CN207989823U (en) | 2018-10-19 |
Family
ID=63829776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820386425.4U Active CN207989823U (en) | 2018-03-21 | 2018-03-21 | A kind of micro-pressure-difference conducting high flow rate check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207989823U (en) |
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2018
- 2018-03-21 CN CN201820386425.4U patent/CN207989823U/en active Active
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