CN107990032A - A kind of adjustable gas constant pressure valve - Google Patents
A kind of adjustable gas constant pressure valve Download PDFInfo
- Publication number
- CN107990032A CN107990032A CN201711157622.5A CN201711157622A CN107990032A CN 107990032 A CN107990032 A CN 107990032A CN 201711157622 A CN201711157622 A CN 201711157622A CN 107990032 A CN107990032 A CN 107990032A
- Authority
- CN
- China
- Prior art keywords
- screw rod
- valve
- spiral shell
- spring
- shell seat
- 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
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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
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
- F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The invention discloses a kind of adjustable gas constant pressure valve, including：One valve body, in being provided with air inlet and pressure relief opening on valve body；In being provided with valve and spring in valve body, valve is connected to one end of spring；Screw rod is also equipped with valve body, screw rod is screwed into body cavity internal thread by it, and screw rod bottom contacts the spring other end；Spiral shell seat is also equipped with valve body, spiral shell seat is free to rotate, and formed with extension bar, screw rod top is provided with a blind hole for spiral shell seat lower part, extension bar with blind hole is with non-circular structure and extension bar can be inserted into blind hole.Rotation by spiral shell seat drives screw rod to rotate by extension bar, make that screw rod vertically moves and spiral shell seat remains stationary as in the up-down direction, at the same time, it can enter or exit internal thread when screw rod rotates its external screw thread, the height of screw rod is set to change, change the elastic force acted on spring, so as to change the vent pressure value of valve, it can be achieved that the adjusting of constant air pressure value.
Description
Technical field
The invention belongs to a kind of gas constant pressure valve, this gas constant pressure valve has certain air pressure adjustment scope, more specifically
Ground, is a kind of elastic force that spring is adjusted using the rotation of screw rod, makes the valve by spring force compressing connection by discharging gas
Stream has the function that to adjust air pressure to maintain air pressure constant by adjusting screw rod.
Background technology
In existing gas constant pressure valve, have and air admission hole is directly adjusted using the conehead of conical screw, this system that adjusts leads to
The internal thread for screwing into inner cavity of screw rod is crossed to change the height of conehead, adjusts the size of gas channel sectional area, but by
Cannot unrestrictedly it be reduced in the making of pitch, thus the precision of air pressure adjustment is just limited be subject to larger；Also have using spring
Both ends are placed between screw rod and valve, spring is twisted and is compressed by rotating screw rod, while by spring-loaded valve door
It is allowed to adjust air admission hole, since the coefficient of stiffiness of spring is easily influenced and produces change be subject to twisting so that attempt with rotation
Become more complicated to adjust air pressure, it no longer by linearly intuitively in the form of present.Therefore, in existing gas constant pressure valve, adopt
Valve is adjusted with screw rod or screw rod and spring, the precision of air pressure adjustment is easily subject to the coefficient of stiffiness and tune of spring
Save the influence of pitch, it is difficult to meet the requirement in precision.
Further, since the reason on existing air pressure constant pressure valve arrangement, the height of screw rod can change with the adjusting of pitch,
Then, the component of installation such as knob is not easy on adjusting rod.
The content of the invention
The invention aims to provide a kind of adjustable gas constant pressure valve, which provides a kind of structure, energy
Enough make the precision of air pressure adjustment can largely be improved, meanwhile, its adjusting rod is suitable for installation and adjustment knob,
Use also more convenient.
The object of the present invention is achieved like this：
A kind of gas constant pressure valve, including a valve body, in being provided with air inlet and pressure relief opening on valve body；In being provided with valve in valve body
And spring, valve are connected to one end of spring；Its main feature is that：Screw rod is also equipped with valve body, screw rod is screwed into by it
In the internal thread of body cavity, and the bottom of screw rod contacts the other end of spring；Spiral shell seat is also equipped with valve body, spiral shell seat can
It is freely rotated, spiral shell seat lower part is formed with an extension bar, and screw rod top is provided with a blind hole, and extension bar is with blind hole by non-circular structure
Coordinate and extension bar can be inserted into blind hole.
In this way, by extension bar screw rod can be driven to rotate by the rotation of spiral shell seat, make that screw rod vertically moves and spiral shell seat exists
Remained stationary as on above-below direction, meanwhile, when screw rod rotates, its external screw thread can enter or exit internal thread, make the height of screw rod
Change, change the elastic force acted on spring, so as to change the vent pressure value of valve, thus it is possible to realize constant gas
The adjusting of pressure value.
The adjustable gas constant pressure valve of the invention, spring are socketed on screw rod, then, when screw rod rotates,
Spring will not be subject to the rotation of screw rod and twist, so as to will not cause the change of the spring coefficient of stiffiness, will not change constant pressure valve tune
The linear characteristic of section.
The adjustable gas constant pressure valve of the present invention, spring system are only compressed on screw rod, and then, the rotation of screw rod causes spiral shell
The change of bar height be able to will be reflected directly on the elastic force of spring, so that the adjusting of air pressure is more simple, more convenient people
Understanding and operation.
This adjustable gas constant pressure valve, can bend strong coefficient by choosing different springs or change screw pitch so that
Pressure controlled scope can be reflected by the adjusting angle of screw rod, then, be more advantageous to the operation of screw rod, it can be achieved that more
Accurately to adjust.
The adjustable gas constant pressure valve, spiral shell seat can drive screw rod to rotate, screw rod is moved along the vertical direction, and spiral shell seat is upper
Lower section remains stationary as upwards, and then, spiral shell seat is suitable for setting adjusting knob.
It is preferred that in such scheme, an adjusting rod is further included, adjusting rod is fixed on spiral shell seat or spiral shell seat upwardly extends
There is adjusting rod.It can then drive spiral shell seat to rotate in this way, rotating adjusting rod, and drive screw rod to rotate by spiral shell seat.
It is preferred that in such scheme, an adjusting knob is further included, adjusting knob is assemblied on adjusting rod.It can allow
User rotates adjusting rod by adjusting knob, and the convenience of bigger is provided for operation.
Brief description of the drawings
Fig. 1 is a kind of schematic diagram of embodiment structure of adjustable constant-pressure valve of the present invention；
Fig. 2 is the schematic diagram of Fig. 1 adjustable constant-pressure valve arrangement section views.
Embodiment
Specific embodiment of the present invention is described in detail below in conjunction with the accompanying drawings：
Referring to Figures 1 and 2, the adjustable constant-pressure valve of present embodiment, including a valve body 1, in being provided with air inlet on valve body
Mouth 11 and pressure relief opening 12；Cavity 13 has been internally formed in valve body 1, cavity 13 is provided with valve 2, spring 3, screw rod 4 and spiral shell seat 5,
Wherein, screw rod 4 is threaded onto the internal thread of cavity 13 in internal thread by its external screw thread, and one end of spring 3 is contacted with valve 2,
The other end of spring 3 then contacts with screw rod 4 and is subject to the compression of screw rod 4, and the coefficient of stiffiness of spring 3 can be made to remain constant,
Meanwhile 4 height of screw rod change system presented by the compression of spring 3, in this way, the precision for being conducive to air pressure adjustment can obtain into
The raising of one step, will not be limited be subject to pitch, and 4 top of screw rod is provided with blind hole 41, and spiral shell seat 5 is located on the shoulder 13a of cavity 13, spiral shell
Seat 5 can be freely rotated on shoulder 13a, and spiral shell seat 5 has also been formed down extension bar 51, and extension bar 51 is with blind hole 41 using such as triangle
The non-round shapes such as shape, quadrangle, and extension bar 51 can be inserted into blind hole 41 so that when spiral shell seat 5 rotates, extension bar 51 can pass through
Blind hole 41 drive screw rod 4 rotate, realize screw rod 4 rotation produce displacement and spiral shell seat 5 is only rotated without movement；In addition, spiral shell seat 5
Top is also extended with adjusting rod 6, and above-mentioned component is fixed on valve body 1 by fixing nut 8；Furthermore tune can be then installed on adjusting rod 6
Save knob 7, in this way, adjusting rod 6 and adjusting knob 7 in operation be subject to spiral shell seat 5 limited and only produce rotation without
Displacement is produced, then, is not susceptible to interfere between adjusting knob 7 and valve body 1, and the setting of adjusting knob 7 can be then user
Bring operational convenience；In addition, forming limited position mechanism 81 in fixing nut 8, which can make the rotation of adjusting knob 7
Turn to be no more than one week.
The adjusting process of adjustable constant-pressure valve is described below：
During operation, by rotating adjusting knob 7, by knob 7 adjusting rod 6 can be driven to rotate, drive spiral shell seat 5 to rotate by adjusting rod 6,
Then, screw rod 4 is driven to rotate by blind hole 41 by extension bar 51, screw rod 4 is by the precession in the internal thread of cavity 13 of its external screw thread
Or rotation is moved back, making screw rod 4, generation position changes in height, and thus changes the size of compression 3 elastic force of spring, makes valve 2 with not
Participate in adjusting the air-flow of air inlet 11 with degree, have the function that more accurately adjusting air pressure.
Claims (3)
1. a kind of adjustable gas constant pressure valve, including a valve body, in being provided with air inlet and pressure relief opening on valve body；In pacifying in valve body
Equipped with valve and spring, valve is connected to one end of spring；It is characterized in that：Screw rod is also equipped with valve body, screw rod passes through outside it
It is threaded into the internal thread of body cavity, and the bottom of screw rod contacts the other end of spring；Spiral shell is also equipped with valve body
Seat, spiral shell seat is free to rotate, and formed with an extension bar, screw rod top is provided with a blind hole, extension bar and blind hole for spiral shell seat lower part
With non-circular structure and extension bar can be inserted into blind hole.
2. according to the adjustable gas constant pressure valve of claims 1, further include an adjusting rod, adjusting rod be fixed on spiral shell seat or
Spiral shell seat has upwardly extended adjusting rod.
3. according to the adjustable gas constant pressure valve of claims 2, an adjusting knob is further included, adjusting knob is assemblied in adjusting
On bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711157622.5A CN107990032A (en) | 2017-11-20 | 2017-11-20 | A kind of adjustable gas constant pressure valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711157622.5A CN107990032A (en) | 2017-11-20 | 2017-11-20 | A kind of adjustable gas constant pressure valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107990032A true CN107990032A (en) | 2018-05-04 |
Family
ID=62031044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711157622.5A Pending CN107990032A (en) | 2017-11-20 | 2017-11-20 | A kind of adjustable gas constant pressure valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107990032A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109268550A (en) * | 2018-09-14 | 2019-01-25 | 宁波铭匠扎啤设备有限公司 | A kind of adjustable compression release valve for beer on draft preservation drum |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3848632A (en) * | 1973-10-09 | 1974-11-19 | Anderson Greenwood & Co | Valve |
| GB1414744A (en) * | 1973-02-26 | 1975-11-19 | Brown F W | Valve arrangement |
| US3937250A (en) * | 1974-08-19 | 1976-02-10 | Caterpillar Tractor Co. | Pressure relief adjustment means for check valve |
| CN1842671A (en) * | 2004-03-15 | 2006-10-04 | 布鲁宁赫斯海诺马帝克有限公司 | Valve |
| CN201196270Y (en) * | 2008-05-23 | 2009-02-18 | 丛爱国 | Liquefied gas steel cylinder valve |
| CN201437846U (en) * | 2009-08-05 | 2010-04-14 | 宁波杰克龙阀门有限公司 | Hand-operated temperature control valve |
| CN201651528U (en) * | 2010-05-17 | 2010-11-24 | 吴登传 | Safety valve of steam cleaner |
| CN202065544U (en) * | 2011-04-29 | 2011-12-07 | 浙江盾安阀门有限公司 | Constant-temperature regulating valve |
| CN102597586A (en) * | 2009-11-12 | 2012-07-18 | 施拉德布里奇波特国际股份有限公司 | Pressure regulator valve seals, systems and methods |
| CN204213426U (en) * | 2014-09-28 | 2015-03-18 | 杭州金奥阀门制造有限公司 | Interior pressure Self-operated pressure reducing valve |
-
2017
- 2017-11-20 CN CN201711157622.5A patent/CN107990032A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1414744A (en) * | 1973-02-26 | 1975-11-19 | Brown F W | Valve arrangement |
| US3848632A (en) * | 1973-10-09 | 1974-11-19 | Anderson Greenwood & Co | Valve |
| US3937250A (en) * | 1974-08-19 | 1976-02-10 | Caterpillar Tractor Co. | Pressure relief adjustment means for check valve |
| CN1842671A (en) * | 2004-03-15 | 2006-10-04 | 布鲁宁赫斯海诺马帝克有限公司 | Valve |
| CN201196270Y (en) * | 2008-05-23 | 2009-02-18 | 丛爱国 | Liquefied gas steel cylinder valve |
| CN201437846U (en) * | 2009-08-05 | 2010-04-14 | 宁波杰克龙阀门有限公司 | Hand-operated temperature control valve |
| CN102597586A (en) * | 2009-11-12 | 2012-07-18 | 施拉德布里奇波特国际股份有限公司 | Pressure regulator valve seals, systems and methods |
| CN201651528U (en) * | 2010-05-17 | 2010-11-24 | 吴登传 | Safety valve of steam cleaner |
| CN202065544U (en) * | 2011-04-29 | 2011-12-07 | 浙江盾安阀门有限公司 | Constant-temperature regulating valve |
| CN204213426U (en) * | 2014-09-28 | 2015-03-18 | 杭州金奥阀门制造有限公司 | Interior pressure Self-operated pressure reducing valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109268550A (en) * | 2018-09-14 | 2019-01-25 | 宁波铭匠扎啤设备有限公司 | A kind of adjustable compression release valve for beer on draft preservation drum |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180504 |