CN207378494U - A kind of bottle valve with pressure holding function - Google Patents

A kind of bottle valve with pressure holding function Download PDF

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Publication number
CN207378494U
CN207378494U CN201720881917.6U CN201720881917U CN207378494U CN 207378494 U CN207378494 U CN 207378494U CN 201720881917 U CN201720881917 U CN 201720881917U CN 207378494 U CN207378494 U CN 207378494U
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China
Prior art keywords
valve
piston
spring
venting channels
movable chamber
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Active
Application number
CN201720881917.6U
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Chinese (zh)
Inventor
马正云
鲁卫国
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DANYANG FEILUN GAS VALVE Co Ltd
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DANYANG FEILUN GAS VALVE Co Ltd
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Priority to CN201720881917.6U priority Critical patent/CN207378494U/en
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Abstract

The utility model provides a kind of bottle valve with pressure holding function, including handwheel, valve body, valve rod, pressure cap, spool, safety relief device, valve body is equipped with the air inlet of connection gas cylinder and the external outlet interface used, pressurizer is equipped at the intake interface of valve body, pressurizer is by valve, spring, spring base forms, spring base is connected with valve body screw thread and is sealed by sealing ring, valve is seated at the movable chamber in valve body intake interface, valve is size plunger designs, sealing ring is equipped on the outside of big piston, the elongated mandril in valve one end passes through venting channels, in the insertion spring base internal control of other end valve piston and it is pressed on spring, valve is internally provided with valve venting channels and venthole.When gas cylinder deflation uses the pressure of setting, valve can be automatically closed, and gas is prevented in gas cylinder to be completely used up rear air and enter in gas cylinder, so as to ensure the purity of gas in gas cylinder, without carrying out vacuumize process to gas cylinder again during inflation, save production cost.

Description

A kind of bottle valve with pressure holding function
Technical field
The utility model is related to a kind of gas cylinder valve technologies, particularly a kind of bottle valve with pressure holding function.
Background technology
The development of current industrial technology largely using high-purity gas, common bottle valve when in use, when gas is finished When, extraneous air is easily mixed into, when filling high-purity gas next time, it is necessary to first make vacuumize process to gas cylinder, it then could be toward gas High-purity gas is filled in bottle, causes the increase of production cost.
The content of the invention
The purpose of this utility model is to provide a kind of bottle valve with pressure holding function, when gas cylinder deflation uses setting Pressure when, can be automatically closed, prevent that gas is completely used up in gas cylinder, so as to ensure the purity of gas in gas cylinder.
Realize the utility model aim technical solution be:A kind of bottle valve with pressure holding function, including handwheel, valve Body, valve rod, spool, safety relief device, pressurizer;Valve body is equipped with air inlet, the external outlet used of connection gas cylinder Mouth and safety relief mouth, valve body interior set are connected between valve chamber and movable chamber and valve chamber and movable chamber by venting channels, air inlet Mouth is connected with movable chamber, and gas outlet, safety relief mouth are connected with valve chamber, and venting channels upper surface sets the first valve seat, and ventilation is logical Road lower face sets the second valve seat;Handwheel is arranged at outside valve body and is fixedly connected with valve rod upper end, on valve rod lower end and spool End is fixedly connected, and spool is threaded onto in valve chamber by screw thread and moves up and down realization and the first valve seat along valve chamber under the driving of handwheel Separation and closely sealed;Pressurizer includes valve, spring, elongated mandril, spring base;Spring base is fixed at air inlet and setting Air through hole, spring one end is fixed on spring base and the other end is fixed on valve, set in valve venting channels connect into Vent hole and movable chamber, valve move up and down point realized with the second valve seat under the action of spring and gases at high pressure along movable chamber From with it is closely sealed, elongated mandril be arranged at valve upper surface and be higher than in the venting channels and under the driving of valve and spool or Less than the first valve seat;Safety relief device is arranged at safety relief mouth.
Using above-mentioned bottle valve, the valve includes big piston, valve piston;Between wherein big piston upper end and movable cavity wall There are gap and big piston upper surface is set and the sealing surface of the second valve seat cooperation, gap between big piston and movable cavity wall It is zero, venting channels opening is arranged at big piston upper end;Valve piston is arranged at big piston and diameter is less than movable chamber internal diameter, Valve piston lower end is connected with spring.
Using above-mentioned bottle valve, balance hole is set on valve body, balance hole connection outside and the activity at valve piston Chamber.
The utility model compared with prior art, has the following advantages:Pressurize is provided at bottle valve intake interface to fill It puts, when gas cylinder deflation uses the pressure of setting, can be automatically closed, prevent that gas is completely used up in gas cylinder, so as to ensure gas The purity of gas in bottle without carrying out vacuumize process to gas cylinder again during inflation, save production cost.
The utility model is described further with reference to Figure of description.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
Fig. 2 is the utility model pressurizer enlarged structure schematic diagram.
Pressurizer enlarged structure schematic diagram when Fig. 3 is the utility model inflation.
Specific embodiment
With reference to Fig. 1, Fig. 2, Fig. 3, a kind of bottle valve with pressure holding function, including handwheel 1, valve body 6, valve rod 3, spool 5, Safety relief device 8, pressurizer.
6 upper and lower ends of valve body set air through hole, stem through-hole respectively, and 6 side wall of valve body sets gas outlet 17, safety respectively Bleed outlet, the interior gas passage that connection air through hole, gas outlet 17, safety relief mouth and stem through-hole are set of valve body 6, valve body 6 It is connected between interior setting valve chamber 18 and movable chamber 15 and valve chamber 18 and movable chamber 15 by venting channels 16, air inlet and movable chamber 15 connections, gas outlet 17 are connected with valve chamber 18, and safety relief mouth is connected with venting channels 16.Valve body 6 by lower part set into Gas interface 13 is connected with external gas cylinder thread.
Venting channels 16 and 18 junction of valve chamber and 6 inner radial wall of valve body the first valve seat of setting below gas outlet 17 7;Venting channels 16 and 15 junction of movable chamber set the second valve seat 25.First valve seat 7 is to be arranged at venting channels 16 and valve chamber In 18 junction valve body, 6 inner radial wall and along the circumferentially disposed baffle ring of venting channels 16;Second valve seat 25 is infundibulate.
Valve rod 3 is stretched into valve chamber 18, and upper end is fixedly connected with handwheel 1, and pressure cap 2 sets valve stem passage, and valve rod 3 stretches into valve rod Passage and after being connected with valve stem passage inner wall zero clearance, is fixedly connected in 2 precession stem through-hole of pressure cap and in valve body 6.
Spool 5 is fixedly connected with the lower end of valve rod 3, and spool 5 is connected with 18 inner thread of valve chamber, 5 and first valve seat 7 of spool Matching is set;When valve rod 3 screws band movable valve plug 5 and moves downward, 5 lower face of spool is finally connected with 7 zero clearance of the first valve seat Cooperation.
Pressurizer includes valve 9, elongated mandril, spring 10, spring base 11, and valve 9 includes big piston 9-1, valve piston 9-2, valve venting channels 23, venthole 24.Valve body is arranged in venting channels 16 and top and 16 inner wall of venting channels Zero clearance coordinates;There are gaps and big piston 9-1 upper surfaces between 15 inner wall of big piston 9-1 upper ends and movable chamber to be set and the second valve The sealing surface 19 of 25 cooperation of seat, sealing surface 19 is infundibulate and slope is consistent with the slope of the second valve seat 25, big piston 9-1 lower ends Gap is zero between 15 inner wall of movable chamber, and venting channels opening is arranged at big piston 9-1 upper ends;Valve piston 9-2 is arranged at big work It fills in 9-1 lower ends and diameter is less than 15 internal diameter of movable chamber, valve piston 9-2 lower ends are connected with spring 10.Spring base 11 is axially disposed Endoporus, valve piston 9-2 are inserted into 11 endoporus of spring base and are pressed on spring 10.Elongated mandril is arranged on valve sealing surface 19 End face and diameter are less than 16 internal diameter of venting channels, and when valve sealing surface 19 is connected with 25 zero clearance of the second valve seat, stock enters valve In chamber 18, it is pressed into venting channels 16 by spool 5 when 5 and first valve seat 7 of spool is fitted close;Valve venting channels 23 are axial It sets, venthole 24 radially sets and connects valve venting channels 23 and movable chamber 15;Spring base 11 be arranged at the lower section of valve 9 and It is fixed on valve body 6, spring base 11 sets the air inlet 12 connected with valve venting channels 23, and 10 both ends of spring are respectively arranged at On valve 9 and spring base 11.
As a kind of improvement of the utility model, spring base 11 is arranged at the valve slot of the connection of air inlet 12, valve main body Lower part is located in valve slot, and spring 10 is arranged in valve slot and connects valve main body lower face and valve groove bottom.
Safety relief device 8 is arranged at safety relief mouth.
Balance hole 14 is set on valve body 6, which connects outside and the movable chamber 15 at valve piston 9-2.
First sealing ring 26, the top coordinated in valve main body with 16 zero clearance of venting channels are set on valve sealing surface 19 Circumferentially arranged second sealing ring 20 sets the 3rd sealing ring 22 between spring base 11 and valve body 6.Valve lower body part and spring The 4th sealing ring 21 is set between 11 valve slot inner walls of seat.
When valve 9 is bonded with the second valve seat 25, the distance that elongated mandril end face is higher by the first valve seat 7 is 1.5mm.
When valve fully opens, distance >=2mm of 5 and first valve seat 7 of spool.
The course of work of the utility model is as follows:
When the first use of gas cylinder vacuumizes, gas cylinder valve hand wheel 1 only need to be opened to half-turn or so, spool 5 divides with the first valve seat 7 From, while 5 lower plane of spool is pressed on the mandril of valve 9,9 and second valve seat 25 of valve separates, and gas circuit conducting can carry out It vacuumizes.
For bottle valve in use, counterclockwise by 1 standard-sized sheet of handwheel, spool 5 leaves the first valve seat 7, the gases at high pressure pair in gas cylinder The downward thrust that valve 9 generates is more than the elastic force upward to valve 9 of spring 10, and valve 9 moves down, valve sealing surface 19 from The second valve seat 25 is opened, gas circuit is opened, and realizes just common gas, when the pressure in gas cylinder drops to the dwell pressure of setting, spring force The thrust downward to valve 9 more than gas, valve 9 is pushed up, and causes 19 and second valve seat 25 of valve sealing surface closely sealed, from It moves and closes gas channels, the low-pressure gas in gas cylinder will remain in gas cylinder, prevent that gas is completely used up causing air in gas cylinder It flows into gas cylinder.
During inflation, since pressurizer ensure that the purity of gas in gas cylinder, without being vacuumized again to gas cylinder, inflate Gas cylinder valve hand wheel 1 need to only be opened, spool 5 is separated with the first valve seat 7, is pushed valve 9 open downwards using the pressure of charge air conditioning, 9 and second valve seat 25 of valve separates, and gas circuit conducting is i.e. inflatable, and rotating clockwise handwheel 1 after the completion of inflation closes valve, spool 5 are pressed into elongated mandril in venting channels 16.

Claims (7)

1. a kind of bottle valve with pressure holding function, which is characterized in that including handwheel (1), valve body (6), valve rod (3), spool (5), safety relief device (8), pressurizer;
Valve body (6) is equipped with air inlet, the external gas outlet (17) used and the safety relief mouth of connection gas cylinder,
It is set in valve body (6) between valve chamber (18) and movable chamber (15) and valve chamber (18) and movable chamber (15) and passes through venting channels (16) connect,
Air inlet is connected with movable chamber (15),
Gas outlet (17) is connected with valve chamber (18),
Safety relief mouth is connected with venting channels (16),
Venting channels (16) upper surface sets the first valve seat (7),
Venting channels (16) lower face sets the second valve seat (25);
Handwheel (1) is arranged at valve body (6) outside and is fixedly connected with valve rod (3) upper end,
Valve rod (3) lower end is fixedly connected with spool (5) upper end,
Spool (5) be threaded onto by screw thread in valve chamber (18) and under the driving of handwheel (1) along valve chamber (18) move up and down realization with The separation of first valve seat (7) and closely sealed;
Pressurizer includes valve (9), spring (10), elongated mandril, spring base (11);
Spring base (11) is fixed at air inlet and sets air through hole (12),
Spring (10) one end is fixed on spring base (11) and the other end is fixed on valve (9),
In valve (9) venting channels is set to connect air through hole (12) and movable chamber (15),
Valve (9) moves up and down realization and the second valve seat (25) under the action of spring (10) and gases at high pressure along movable chamber (15) Separation and closely sealed,
Elongated mandril is arranged at valve (9) upper surface and in venting channels (16) and in the driving of valve (9) and spool (5) It is higher or lower than the first valve seat (7) down;
Safety relief device (8) is arranged at safety relief mouth.
2. bottle valve according to claim 1, which is characterized in that the valve (9) includes big piston (9-1), valve piston (9-2);Wherein
There are gaps and big piston (9-1) upper surface greatly between piston (9-1) upper end and movable chamber (15) inner wall to be set and the second valve The sealing surface (19) of seat (25) cooperation,
Gap is zero between piston (9-1) lower end and movable chamber (15) inner wall greatly,
Venting channels opening is arranged at big piston (9-1) upper end;
Valve piston (9-2) is arranged at big piston (9-1) lower end and diameter is less than movable chamber (15) internal diameter,
Valve piston (9-2) lower end is connected with spring (10).
3. bottle valve according to claim 2, which is characterized in that balance hole (14), the balance hole are set on valve body (6) (14) connection outside and the movable chamber (15) at valve piston (9-2).
4. bottle valve according to claim 2, which is characterized in that spring base (11) axially disposed endoporus, valve piston (9- 2) it is inserted into spring base (11) endoporus and is pressed on spring (10).
5. bottle valve according to claim 1 or 2, which is characterized in that valve (9) and movable chamber (15) inner wall, the second valve The place of seat (25) contact sets sealing ring, and sealing ring, spring base (11) and valve body are set between fixed link and spring base (11) (6) sealing ring is set between.
6. bottle valve according to claim 1, which is characterized in that when valve (9) is bonded with the second valve seat (25), elongated top The distance that rod end surface is higher by the first valve seat (7) is 1.5mm.
7. bottle valve according to claim 1, which is characterized in that when valve fully opens, spool (5) and the first valve seat (7) Distance >=2mm.
CN201720881917.6U 2017-07-20 2017-07-20 A kind of bottle valve with pressure holding function Active CN207378494U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720881917.6U CN207378494U (en) 2017-07-20 2017-07-20 A kind of bottle valve with pressure holding function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720881917.6U CN207378494U (en) 2017-07-20 2017-07-20 A kind of bottle valve with pressure holding function

Publications (1)

Publication Number Publication Date
CN207378494U true CN207378494U (en) 2018-05-18

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ID=62298141

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720881917.6U Active CN207378494U (en) 2017-07-20 2017-07-20 A kind of bottle valve with pressure holding function

Country Status (1)

Country Link
CN (1) CN207378494U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109931411A (en) * 2019-03-01 2019-06-25 湖北三江航天红峰控制有限公司 Top opening type valve device
CN110715064A (en) * 2019-10-31 2020-01-21 宁波华成阀门有限公司 Interval display liquid level meter, display method thereof and gas cylinder valve comprising interval display liquid level meter
CN110735968A (en) * 2019-10-31 2020-01-31 宁波华成阀门有限公司 Gas cylinder valve with liquid level meter
CN113795703A (en) * 2019-05-07 2021-12-14 佛吉亚排气系统有限公司 Head of pressurized gas tank
CN113795703B (en) * 2019-05-07 2023-01-06 佛吉亚排气系统有限公司 Head of pressurized gas tank

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109931411A (en) * 2019-03-01 2019-06-25 湖北三江航天红峰控制有限公司 Top opening type valve device
CN113795703A (en) * 2019-05-07 2021-12-14 佛吉亚排气系统有限公司 Head of pressurized gas tank
CN113795703B (en) * 2019-05-07 2023-01-06 佛吉亚排气系统有限公司 Head of pressurized gas tank
CN110715064A (en) * 2019-10-31 2020-01-21 宁波华成阀门有限公司 Interval display liquid level meter, display method thereof and gas cylinder valve comprising interval display liquid level meter
CN110735968A (en) * 2019-10-31 2020-01-31 宁波华成阀门有限公司 Gas cylinder valve with liquid level meter

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