CN110469701A - Petroleum vapor recovery valve with respiratory function - Google Patents
Petroleum vapor recovery valve with respiratory function Download PDFInfo
- Publication number
- CN110469701A CN110469701A CN201910847284.0A CN201910847284A CN110469701A CN 110469701 A CN110469701 A CN 110469701A CN 201910847284 A CN201910847284 A CN 201910847284A CN 110469701 A CN110469701 A CN 110469701A
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- Prior art keywords
- valve
- pressure
- cylinder
- piston
- cavity
- 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.)
- Granted
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- 239000003208 petroleum Substances 0.000 title claims abstract description 27
- 238000011084 recovery Methods 0.000 title claims abstract description 27
- 230000004202 respiratory function Effects 0.000 title claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 31
- 238000009434 installation Methods 0.000 claims abstract description 13
- 230000008676 import Effects 0.000 claims description 17
- 238000004891 communication Methods 0.000 claims description 14
- 238000009423 ventilation Methods 0.000 claims description 4
- 230000032258 transport Effects 0.000 claims 1
- 230000029058 respiratory gaseous exchange Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 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
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/048—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded combined with other safety valves, or with pressure control devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/06—Controlling or regulating of parameters as output values
- F17C2250/0605—Parameters
- F17C2250/0626—Pressure
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
The present invention relates to a kind of petroleum vapor recovery valve with respiratory function, including valve body, flap, valve body is made of upper valve body and lower valve body, the two passes through flange one fixing seal by installation bolt and is mounted on the tank body of oil storage tank, lower valve body is mounted on tank inner chamber, and lower end is equipped with and the mutually matched sealing surface of seat of flap；It is characterized in that: being equipped with breather valve and dump valve in lower valve body；The breather valve includes vacuum suction valve and positive pressure relief valve；Have the function of petroleum vapor recovery valve, breather valve and dump valve, reduce oil storage tank valve installation number, reduces equipment installation cost.Suitable for oil storage tank petroleum vapor recovery, breathing Multifunctional combined valve.
Description
Technical field
The invention belongs to valve fields, especially with respect to a kind of petroleum vapor recovery valve/breather valve.The present invention is suitable for oil storage tank
Petroleum vapor recovery, breathing Multifunctional combined valve.
Background technique
Currently, generally requiring installation petroleum vapor recovery valve, breather valve and dump valve on oil storage tank, petroleum vapor recovery valve connects
Logical oil storage tank and petroleum vapor recovery pipeline control petroleum vapor recovery, and breather valve and dump valve are installed on the manhole cover with oil storage tank,
Superpressure or negative pressure in oil storage tank are prevented, oil storage tank pressure security is protected.Its major defect is that valve installation number is more, installation space
It is required that big, device fabrication and installation cost are high.
Summary of the invention
The present invention is directed to disadvantage of the existing technology, and oil storage tank valve quantity can be reduced by providing one kind, reduces equipment
The petroleum vapor recovery valve with respiratory function of installation cost.
Technical solution of the present invention includes valve body, flap, and valve body is made of upper valve body and lower valve body, and the two is by installation bolt
On the tank body that flange one fixing seal is mounted on oil storage tank, lower valve body is mounted on tank inner chamber, and lower end is equipped with and valve
The mutually matched sealing surface of seat of valve, upper valve body are connected to petroleum vapor recovery pipeline, and the inner cavity of upper valve body and lower valve body is interconnected；
It is characterized in that: being equipped with breather valve and dump valve in lower valve body；The breather valve includes vacuum suction valve and positive pressure relief valve；
The vacuum suction valve includes cylinder body, piston and negative pressure spring, and cylinder body upper end is fixedly connected with lower valve body, and cylinder body lower end is circle
Opening is equipped with radial ringed internal shoulder in inferior part of the cylinder block inner round wall, and flap back center is fixedly connected with a connection frame, the connection frame
The centre bore that upper end passes through radial ringed internal shoulder is fixedly connected with the piston, and outside piston face is matched with inner chamber of cylinder block wall dynamic sealing
It closes, negative pressure spring is mounted between the radial ringed internal shoulder of cylinder body and piston lower surface；The positive pressure relief valve includes pressure release
Valve body, pressure releasing valve core, pressure release valve seat, pressure release spring, pressure relief valve body are fixedly connected on the baseplane at the flap back side, center system
There are cylindrical cavity, the dynamic cooperation of the cylindrical cavity internal chamber wall of pressure releasing valve core external cylindrical surface and pressure relief valve body center, pressure release valve seat
It is arranged on the connection frame at the flap back side right above pressure releasing valve core, pressure releasing valve core upper end is formed with and pressure release valve seat communication port lower end
The mutually matched sealing surface of sealing surface, pressure release spring are mounted on the cylindrical cavity of pressure releasing valve core lower end surface Yu pressure relief valve body center
Between bottom surface, the communication port upper end of pressure release valve seat is connected to by the pressure release passage in connection frame with oil storage tank inner cavity, pressure release valve seat
There is clearance space, which is connected to lower valve intracoelomic cavity between communication port lower end sealing surface and pressure relief valve body upper surface；
The dump valve includes spool, spring, valve seat, and valve seat is arranged on cylinder body on the lower end surface of cavity wall, and spool upper surface is set
Have and the mutually matched sealing surface of valve seat, the dynamic cooperation of the cylindrical empty cavity wall of spool periphery and piston upper surface center, bullet
Spring is mounted between the spring eye of spool lower end and the cylindrical cavity bottom surface of piston, sealing surface of seat upside and pressure control pipe
Outlet, pressure control pipe import are connected to tank inner chamber and compressed air cylinder respectively by switching switch, sealing surface of seat
Pressure chamber is equipped between downside and piston upper surface, which is connected to discharge-channel, in oil storage tank transport, pressure control
Pipe import is connected to tank inner chamber, and discharge-channel is connected to atmosphere, when oil storage tank refuels, pressure control pipe import and compressed air cylinder
Connection, discharge-channel non-close.
Preferably, switching switch includes the first check valve, second one-way valve, third check valve, the import of the first check valve
Be connected to by stacked switch with compressed air cylinder, the outlet of the first check valve simultaneously with second one-way valve import and third check valve
Outlet, the outlet of second one-way valve and pressure control pipe inlet communication, the import of third check valve are connected to tank inner chamber.
Preferably, a cylinder mechanism is arranged in the discharge outlet of discharge tube, and the cylinder mechanism is by cylinder, bleed piston and discharge
Spring composition, casing wall dynamic sealing cooperates in bleed piston periphery and cylinder, discharge spring be mounted on bleed piston lower end surface with
Between cylinder bottom surface, the discharge outlet of discharge tube is connected to by the through-hole of cylinder bottom surface with bleed piston cavity of resorption, in bleed piston
Chamber is connected to the first check valve inlet, is equipped with discharge orifice, the lower end for being located proximate to bleed piston of the discharge orifice in cylinder sidewall
Face.
Preferably, connection frame upper end uses cylindrical structure, and piston uses cylindrical structure, the cylindrical body periphery of connection frame
It is connect with the cylinder inner wall of piston sealing close-fitting, the spool of dump valve is mounted on the centre bore of connection frame upper end cylindrical body
In.
Preferably, filter screen is set between upper valve intracoelomic cavity and lower valve intracoelomic cavity, the filter screen is using back-fire relief ventilation metal
Filter.
Compared with the prior art, the invention has the advantages that being equipped with breather valve and dump valve in lower valve body；Work as oil storage
When the negative pressure that tank inner cavity generates is more than setting value, negative pressure overcomes the elastic force of negative pressure spring to open flap to oil storage tank inner cavity input gas
Pressure；When oil storage tank inner cavity pressure medium is more than positive pressure setup pressure value, pressure medium opens pressure releasing valve core, and oil storage tank inner cavity is situated between
Matter passes through the pressure release of pressure release valve seat；When chamber pressure is more than setting value to oil storage tank during transportation, dump valve is opened, row
Oil storage pressure inside the tank is put, oil storage tank pressure security is protected.When oil storage tank refuels, pressure control pipe import and compressed air cylinder connect
It is logical, flap is opened, petroleum vapor recovery function is reached.Product has the function of petroleum vapor recovery valve, breather valve and dump valve, reduces
Oil storage tank valve installation number reduces equipment installation cost.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is the structural schematic diagram of present invention switching switch.
In figure: 1 upper valve body, 2 lower valve bodies, 3 flaps, 4 cylinder bodies, 5 negative pressure springs, 6 radial ringed internal shoulders, 7 pressure release passages,
8 pressure release springs, 9 pressure releasing valve cores, 10 pressure relief valve bodies, 11 clearance spaces, 12 pistons, 13 springs, 14 spools, 15 lower valve intracoelomic cavities,
16 petroleum vapor recovery pipelines, 17 discharge-channels, 18 pressure chambers, 19 pressure control pipes, 20 filter screens, 21 upper valve intracoelomic cavities, 22 connections
Frame, 23 tank bodies, 24 compressed air cylinders, 25 second one-way valves, 26 third check valves, 27 first check valves, 28 stacked switches, 29 gas
Cylinder, 30 bleed pistons, 31 discharge springs, 32 discharge orifices.
Specific embodiment
Petroleum vapor recovery valve with respiratory function as shown in Figure 1, including valve body, flap 3, valve body is by upper valve body 1 and lower valve
Body 2 forms, and the two passes through flange one fixing seal by installation bolt and is mounted on the tank body 23 of oil storage tank, and lower valve body 2 is installed
In 23 inner cavity of tank body, lower end, which is equipped with, to be connected to the mutually matched sealing surface of flap 3, upper valve body 1 with petroleum vapor recovery pipeline 16, on
Body cavity 21 and lower valve intracoelomic cavity 15 are interconnected；It is characterized in that: being equipped with breather valve and dump valve in lower valve body 2；Institute
Stating breather valve includes vacuum suction valve and positive pressure relief valve；The vacuum suction valve includes cylinder body 4, piston 12 and negative pressure spring 5,
4 upper end of cylinder body is fixedly connected with lower valve body 2, i.e. 4 upper end fixing seal of the cylinder body upper inner wall that is mounted on 2 inner cavity 15 of lower valve body, cylinder
4 lower end of body is round opening, is equipped with radial ringed internal shoulder 6 in 4 lower part inner round wall of cylinder body, 3 back center of flap is fixedly connected
One connection frame 22, the centre bore which passes through radial ringed internal shoulder 6 is fixedly connected with piston 12, outside piston 12
Disc and 4 internal chamber wall dynamic sealing of cylinder body cooperate, and negative pressure spring 5 is mounted on radial ringed internal shoulder 6 and 12 lower end of piston of cylinder body 4
Between face, negative pressure spring 5 generates upward elastic force to piston 12, flap 3, makes the sealing face pressure of flap 3 Yu 2 lower end of lower valve body
Tight sealing engagement, when oil storage tank inner cavity negative pressure is more than setting value, negative pressure pulls flap 3 to overcome the elastic force of negative pressure spring 5, makes
Piston 12 is moved down in 4 internal chamber wall of cylinder body, and flap 3 is opened, and petroleum vapor recovery pipeline 16 compensates air pressure to oil storage tank inner cavity, is played
The effect of negative pressure of vacuum valve；The positive pressure relief valve includes pressure relief valve body 10, pressure releasing valve core 9, pressure release valve seat, pressure release spring 8, is let out
Pressure valve body 10 is fixedly connected on 3 back center of flap, and center is formed with cylindrical cavity, 9 external cylindrical surface of pressure releasing valve core and pressure release
The dynamic cooperation of the cylindrical cavity internal chamber wall at 10 center of valve body, pressure release valve seat are arranged on the connection frame 22 right above pressure releasing valve core 9,
9 upper end of pressure releasing valve core be formed with the mutually matched sealing surface of pressure release valve seat communication port lower end sealing surface, pressure release spring 8, which is mounted on, to be let out
Between the cylindrical cavity bottom surface at 10 center of 9 lower end surface of pressure valve core and pressure relief valve body, the communication port upper end of pressure release valve seat passes through company
The pressure release passage 7 connect in frame is connected to oil storage tank inner cavity, pressure release valve seat communication port lower end sealing surface and 10 upper surface of pressure relief valve body
Between there is clearance space 11, which is connected to lower valve intracoelomic cavity 15, when oil storage tank chamber pressure is more than pressure release bullet
When spring 8 sets pressure, pressure releasing valve core 9 opens pressure of releasing；The dump valve includes spool 14, spring 13, valve seat, valve seat
It is arranged on cylinder body 4 on the lower end surface of cavity wall, 14 upper surface of spool is equipped with and the mutually matched sealing surface of valve seat, 14 outer circle of spool
The dynamic cooperation of the cylindrical empty cavity wall at face and 12 upper surface center of piston, spring 13 are mounted on spring eye and the work of 14 lower end of spool
Between the cylindrical cavity bottom surface of plug 12, on the upside of sealing surface of seat with 19 outlet of pressure control pipe, pressure control pipe 19 into
Mouth is connected to tank inner chamber and compressed air cylinder respectively by switching switch, on the downside of sealing surface of seat between 12 upper surface of piston
Equipped with pressure chamber 18, which is connected to discharge-channel 17, in oil storage tank transport, 19 import of pressure control pipe and tank body
Inner cavity connection, discharge-channel 17 are communicated with the atmosphere, and when tank inner chamber pressure is more than that spring 13 sets pressure, spool 14 is opened,
Pressure in tank body is discharged into atmosphere by discharge-channel 17, when oil storage tank refuels, 19 import of pressure control pipe and compression are empty
Gas tank connection, discharge tube 17 are closed, and compressed air pushes spool 14 and piston 12 to open flap 3, reach petroleum vapor recovery function.
The switching switch includes the first check valve 27, second one-way valve 25, third check valve 26, the first check valve 27
Import is connected to by stacked switch 28 with compressed air cylinder 24, the outlet of the first check valve 27 and meanwhile with 25 import of second one-way valve
With 26 outlet of third check valve, the outlet of second one-way valve 25 and 19 inlet communication of pressure control pipe, third check valve 26
Import be connected to 23 inner cavity of tank body.When 24 output pressure of compressed air cylinder, the first check valve 27 and second one-way valve 25 are led
Logical, third check valve 26 ends；When compressed air cylinder 24 is without output pressure, second one-way valve 25 and third check valve 26 are led
Logical, the first check valve 27 cut-off.Stacked switch 28 is variable connector composition interlock switch, wherein when a way switch is opened, remaining
Switch is closed, as shown in Figure 2.
A cylinder mechanism is arranged in the discharge outlet of discharge tube 17, and the cylinder mechanism is by cylinder 29, bleed piston 30 and discharge
Spring 31 forms, and casing wall dynamic sealing cooperates in 30 periphery of bleed piston and cylinder 29, and discharge spring 31 is mounted on bleed piston
Between 29 bottom surface of 30 lower end surfaces and cylinder, under through-hole and bleed piston 30 that the discharge outlet of discharge tube 17 passes through 29 bottom surface of cylinder
Chamber connection, 27 inlet communication of 30 epicoele of bleed piston and the first check valve are equipped with discharge orifice 32, the discharge orifice in 29 side wall of cylinder
32 lower end surface for being located proximate to bleed piston 30.When compressed air cylinder 24 is without output pressure, discharge spring 31 pushes discharge
29 upper end of cylinder is moved on on piston 30,30 cavity of resorption of bleed piston is communicated with the atmosphere discharge orifice 32, when compressed air cylinder 24 exports
When air pressure, discharge spring 31 is compressed, bleed piston 30 move down by discharge orifice 32 seal block, by discharge tube 17 with greatly it is airtight
Insulate from.
22 upper end of connection frame uses cylindrical structure, and piston 12 uses cylindrical structure, the cylindrical body periphery of connection frame 22
It seals close-fitting between the cylinder inner wall of piston to connect, the spool 14 of dump valve is mounted on 22 upper end cylindrical body of connection frame
In centre bore.
Spring 13 sets pressure as 32KPa, and the pressure of compressed air cylinder is 0.5MPa~0.8MPa.
Filter screen 20 is set between upper valve intracoelomic cavity 21 and lower valve intracoelomic cavity 15, and the filter screen 20 is using back-fire relief ventilation metal
Filter.
Claims (6)
1. a kind of petroleum vapor recovery valve with respiratory function, including valve body, flap (3), valve body is by upper valve body (1) and lower valve body (2)
Composition, the two pass through flange one fixing seal by installation bolt and are mounted on the tank body (23) of oil storage tank, and lower valve body (2) is located at
Tank body (23) inner cavity, lower end are equipped with and flap (3) mutually matched sealing surface, upper valve body (1) and petroleum vapor recovery pipeline (16)
Connection, upper valve intracoelomic cavity (21) and lower valve intracoelomic cavity (15) are interconnected；It is characterized in that: lower valve body (2) in be equipped with breather valve and
Dump valve；The breather valve includes vacuum suction valve and positive pressure relief valve；The vacuum suction valve includes cylinder body (4), lives
Plug (12) and negative pressure spring (5), cylinder body (4) upper end are fixedly connected with lower valve body (2), and cylinder body (4) lower end is circular open, in cylinder
Body (4) lower part inner round wall is equipped with radial ringed internal shoulder (6), and flap (3) back center is fixedly connected with a connection frame (22), the company
Frame (22) upper end is connect to be fixedly connected across the centre bore of radial ringed internal shoulder (6) with piston (12), piston (12) periphery and
The cooperation of cylinder body (4) internal chamber wall dynamic sealing, negative pressure spring (5) are mounted on radial ringed internal shoulder (6) and piston (12) of cylinder body (4)
Between lower end surface；The positive pressure relief valve includes pressure relief valve body (10), pressure releasing valve core (9), pressure release valve seat, pressure release spring (8), is let out
Pressure valve body (10) is fixedly connected on flap (3) back center, and center is formed with cylindrical cavity, pressure releasing valve core (9) external cylindrical surface
Cooperation is moved with the cylindrical cavity internal chamber wall at pressure relief valve body (10) center, pressure release valve seat is arranged right above pressure releasing valve core (9)
On connection frame (22), pressure releasing valve core (9) upper end be formed with the mutually matched sealing surface of pressure release valve seat communication port lower end sealing surface, let out
Pressing spring (8) is mounted between pressure releasing valve core (9) lower end surface and the cylindrical cavity bottom surface at pressure relief valve body (10) center, relief valve
The communication port upper end of seat is connected to by the pressure release passage (7) in connection frame (22) with oil storage tank inner cavity, under pressure release valve seat communication port
Holding between sealing surface and pressure relief valve body (10) upper surface has clearance space (11), the clearance space (11) and lower valve intracoelomic cavity
(15) it is connected to；The dump valve includes spool (14), spring (13), valve seat, and valve seat is arranged on cylinder body (4) under cavity wall
On end face, spool (14) upper surface is equipped with and the mutually matched sealing surface of valve seat, spool (14) periphery and piston (12) upper end
The dynamic cooperation of the cylindrical empty cavity wall at face center, spring (13) are mounted on spring eye and piston (12) center of spool (14) lower end
Cylindrical cavity bottom surface between, on the upside of sealing surface of seat with pressure control pipe (19) outlet, pressure control pipe (19) into
Mouthful be connected to respectively with tank inner chamber and compressed air cylinder by switching switch, on the downside of sealing surface of seat and piston (12) upper surface it
Between be equipped with pressure chamber (18), which is connected to discharge-channel (17), when oil storage tank transports, pressure control pipe (19)
Import is connected to tank inner chamber, and discharge-channel (17) is communicated with the atmosphere, when oil storage tank refuels, pressure control pipe (19) import and pressure
The connection of contracting air tank, discharge tube (17) closing.
2. the petroleum vapor recovery valve according to claim 1 with respiratory function, it is characterized in that switching switch includes first
The import of check valve (27), second one-way valve (25), third check valve (26), the first check valve (27) passes through stacked switch (28)
It is connected to compressed air cylinder (24), the outlet of the first check valve (27) and second one-way valve (25) import and third check valve (26)
Outlet, the outlet of second one-way valve (25) and pressure control pipe (19) inlet communication, the import of third check valve (26) with
The connection of tank body (23) inner cavity.
3. the petroleum vapor recovery valve according to claim 2 with respiratory function, it is characterized in that the discharge outlet of discharge tube (17)
One cylinder mechanism is set, which is made of cylinder (29), bleed piston (30) and discharge spring (31), bleed piston
(30) periphery and cylinder (29) interior casing wall dynamic sealing cooperate, and discharge spring (31) is mounted on bleed piston (30) lower end surface and gas
Between cylinder (29) bottom surface, the discharge outlet of discharge tube (17) is connected by the through-hole and bleed piston (30) cavity of resorption of cylinder (29) bottom surface
Logical, bleed piston (30) epicoele and the first check valve (27) inlet communication are equipped with discharge orifice (32) in cylinder (29) side wall, the row
The lower end surface for being located proximate to bleed piston (30) of discharge hole (32).
4. the petroleum vapor recovery valve according to claim 1 or 2 or 3 with respiratory function, it is characterized in that connection frame (22) upper end
With one section of cylindrical body, piston (12) uses cylindrical structure, the cylindrical body periphery of connection frame (22) and the cylinder of piston (12)
Close-fitting is tightly connected between inner wall, and spool (14) is mounted in the centre bore of connection frame (22) upper end cylindrical body.
5. the petroleum vapor recovery valve according to claim 1 or 2 or 3 with respiratory function, it is characterized in that upper valve intracoelomic cavity (21)
Filter screen (20) are set between lower valve intracoelomic cavity (15), the filter screen (20) is using back-fire relief ventilation metallic filter.
6. the petroleum vapor recovery valve according to claim 4 with respiratory function, it is characterized in that upper valve intracoelomic cavity (21) and lower valve
Filter screen (20) are set between intracoelomic cavity (15), the filter screen (20) is using back-fire relief ventilation metallic filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910847284.0A CN110469701B (en) | 2019-09-09 | 2019-09-09 | Oil gas recovery valve with breathing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910847284.0A CN110469701B (en) | 2019-09-09 | 2019-09-09 | Oil gas recovery valve with breathing function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110469701A true CN110469701A (en) | 2019-11-19 |
| CN110469701B CN110469701B (en) | 2024-07-09 |
Family
ID=68515257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910847284.0A Active CN110469701B (en) | 2019-09-09 | 2019-09-09 | Oil gas recovery valve with breathing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110469701B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110721079A (en) * | 2019-11-21 | 2020-01-24 | 张明 | Ear massage nursing device with magnetic therapy effect |
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|---|---|---|---|---|
| CN101943282A (en) * | 2010-08-13 | 2011-01-12 | 陆桂义 | Equivalence self-control given instrument |
| CN103244727A (en) * | 2012-02-14 | 2013-08-14 | 罗达莱克斯阀门(上海)有限公司 | Pressure regulating device and pressure regulator thereof |
| CN206347190U (en) * | 2016-12-28 | 2017-07-21 | 杭州春江阀门有限公司 | A kind of multifunctional composite high speed exhaust intake valve for tilted tube |
| CN108679279A (en) * | 2018-08-15 | 2018-10-19 | 永阀门集团有限公司 | Inner safety-valve |
| CN210770470U (en) * | 2019-09-09 | 2020-06-16 | 浙江嘉隆机械设备有限公司 | Oil gas recovery valve with breathing function |
-
2019
- 2019-09-09 CN CN201910847284.0A patent/CN110469701B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943282A (en) * | 2010-08-13 | 2011-01-12 | 陆桂义 | Equivalence self-control given instrument |
| CN103244727A (en) * | 2012-02-14 | 2013-08-14 | 罗达莱克斯阀门(上海)有限公司 | Pressure regulating device and pressure regulator thereof |
| CN206347190U (en) * | 2016-12-28 | 2017-07-21 | 杭州春江阀门有限公司 | A kind of multifunctional composite high speed exhaust intake valve for tilted tube |
| CN108679279A (en) * | 2018-08-15 | 2018-10-19 | 永阀门集团有限公司 | Inner safety-valve |
| CN210770470U (en) * | 2019-09-09 | 2020-06-16 | 浙江嘉隆机械设备有限公司 | Oil gas recovery valve with breathing function |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110721079A (en) * | 2019-11-21 | 2020-01-24 | 张明 | Ear massage nursing device with magnetic therapy effect |
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| Publication number | Publication date |
|---|---|
| CN110469701B (en) | 2024-07-09 |
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