CN105276226A - Gas proportioning valve with high precision - Google Patents
Gas proportioning valve with high precision Download PDFInfo
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- CN105276226A CN105276226A CN201510736237.0A CN201510736237A CN105276226A CN 105276226 A CN105276226 A CN 105276226A CN 201510736237 A CN201510736237 A CN 201510736237A CN 105276226 A CN105276226 A CN 105276226A
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- valve
- valve pocket
- ratio adjusting
- gas ratio
- precision gas
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Abstract
The invention discloses a gas proportioning valve with high precision. The proportioning valve comprises a valve body, a valve core, a regulating spring, a valve rod, a valve sleeve, a movable valve seat, an indicating mechanism and a knob. The proportioning valve is characterized in that the movable valve seat is locked in the valve sleeve in a tapered locking mode. According to the scheme of the gas proportioning valve, position deviation is effectively avoided in a locking process after the position of the movable valve seat is regulated, the regulation precision is greatly increased, and the working efficiency can be improved.
Description
Technical field
This patent relates to gas control valve, is specifically related to gas ratio modulating valve.
Background technique
Industrial and the first-class various fields of medical treatment often needs to use mixed gas, as industrial mixed gas arc welding connects, and the oxygen-rich gas of medical respiration variable concentrations, or the field such as the mixed gas of food packing industry is anticorrosion.And produce mixed gas and need two or more simple gas to carry out accurate proportioning, produce concentration mixed gas accurately.
The many employings of gas mixing system the earliest, the throttling of main air inlet fixed hole, auxiliary air inlet adopts governor valve control, and matched proportion density can not directly indicate, and needs another gas distribution concentration analyzer to monitor the actual concentrations of the mixed gas regulated.Owing to needing another gas distribution ANALYZER, cost is higher, and ANALYZER is under long-play, and instrument reliability is difficult to ensure, difficult in maintenance, it is not too convenient to use.
For the problems referred to above, also have buying double cone structure at present, design the mixing valve adopting bipyramid spool to control, its shortcoming main in actual applications has three aspects:
One, the usual spool aperture of existing bipyramid spool technology only has about 1mm, is only difficult to ensure required precision by machining accuracy.For making up the size error occurred in processing, prior art, by regulating moving valve position, adjusts the aperture of bipyramid spool.But the lock mode of movable valve seat have problems, after movable valve seat regulates position, be locked nut time, due to the deformed threads under thread pitch and coupling mechanism force effect, movable valve seat deviate from original position after locking, affects the aperture of bipyramid spool, causes precision misregister.Need approach step by step to arrange and just can meet the requirements of precision.
Its two, it is buying cone ringfeder mode that prior art knob indicator regulates, and is connected by knob by the tapered sleeve of locking on the set screw of end with valve rod.Regulating inconvenient in practical operation, easily there is deflection in screw and valve rod, and being difficult to ensure that card knob is connected with valve rod is that position is accurate, fixation, also needs repeatedly to adjust confirmation.
Its three, spring is cylindrical spring, and spool one end is floated in valve pocket inner chamber, and centering is not good.
Summary of the invention
The problem of the mixing valve controlled for above-mentioned existing employing bipyramid spool existing in degree of regulation, the object of this patent is to provide a kind of follow-on gas ratio modulating valve, it can effectively avoid movable valve seat to regulate position deviation behind position in locking process, thus improves the degree of regulation of whole gas ratio modulating valve.
In order to achieve the above object, this patent adopts following technological scheme:
A kind of high-precision gas ratio adjusting valve, described ratio adjusting valve comprises valve body, spool, Regulation spring, valve rod, valve pocket, movable valve seat, indicating device and knob, and described movable valve seat is locked in valve pocket by the mode of cone locking.
Further, described movable valve seat passes through a tapered sleeve nut locking in valve pocket.
Further, described valve pocket end is round table-like, adopts tapered thread as locking screw outside it, described tapered sleeve nut offers the cone shape hole with valve pocket matching ends, the inwall of described cone shape hole is provided with tapered thread, and described tapered thread and valve pocket end epicone screw-thread fit are spirally connected.
Further, described valve pocket end offers some axial grooves along its circumference.
Further, the leading portion portion of described valve pocket end is round table-like, back segment portion is cylindrical, its arranged outside has straight thread as locking screw, described tapered sleeve nut offers the through hole with valve pocket matching ends, the leading portion portion of described through hole is cone shape hole, and described cone shape hole is corresponding with the round platform portion of valve pocket end; The back segment portion of described through hole is circular port, and described circular port is corresponding with the cylindrical back segment portion of valve pocket end, is provided with straight thread inside it, and described straight thread coordinates with the straight thread on valve pocket end and is spirally connected.
Further, the round platform portion of described valve pocket end offers some axial grooves along its circumference.
Further, described Regulation spring is cone shaped spring.
Further, described spool coordinates with cone shaped spring, and its two ends are conical, and middle part is cylindrical.
Further, described valve rod directly assigns in knob and connects as one.
Further, described indicating device comprises indicator and dial, and described indicator is adjustable to be placed on knob, and coordinates with dial.
Further, the side of described knob is provided with sliding preventing part.
The gas ratio modulating valve scheme that this patent provides, effectively avoids movable valve seat to regulate position deviation behind position in locking process, greatly improves degree of regulation, can increase work efficiency.
Meanwhile, this patent scheme also improves the adjustment of intensity indicator and the connection of knob and valve rod, makes debugging operations convenient.Taper spring used instead by spring, and outer end is located, and improves spool centering.
Accompanying drawing explanation
This patent is further illustrated below in conjunction with the drawings and specific embodiments.
The structural representation of the gas ratio modulating valve that Fig. 1 provides for this patent example;
The axial sectional view of the gas ratio modulating valve that Fig. 2 provides for this patent example.
Embodiment
The technological means realized to make this patent, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth this patent further.
See Fig. 1, Fig. 2, this example provides gas ratio modulating valve mainly to comprise valve body 1, spool 2, spring 3, valve rod 4, valve pocket 5, movable valve seat 6, tapered sleeve nut 7, Cock screw 8, concentration scale dish 9, intensity indicator 10, knob 11 and support 12.
As seen from the figure, this valve body 1 entirety is square, one end of this valve body 1 offers placing chamber, for settling valve pocket 5 and movable valve seat 6; On valve body 1 side, offer two inlet holes and an air outlet hole simultaneously, and be communicated with the placing chamber in valve body 1 respectively.
Valve pocket 5 entirety is a hollow structure, and its inner chamber comprises three sections, and leading portion cavity is placing chamber, is step hole structure, for movable valve seat 6, and using the inner chamber of movable valve seat 6 as the first air-inlet cavity; Stage casing cavity is gas mixing chamber; Back segment cavity is as the second air-inlet cavity, and stage casing cavity bottom is communicated with back segment cavity by an adjustment hole.
The valve pocket 5 of structure like this, its underpart is embedded in the placing chamber of valve body 1, and the outside of valve pocket 5 underpart does not correspond to inlet hole on valve body 1 and air outlet hole, be provided with corresponding three annular gas tanks, wherein the bottom of the first annular gas tank offers some through holes and is communicated with the placing chamber in valve pocket 5; The bottom of the second annular gas tank offers some through holes and is communicated with the gas mixing chamber in valve pocket 5; The bottom of the 3rd annular gas tank offers some through holes and is communicated with the second air-inlet cavity in valve pocket 5.
In order to ensure the sealing between separate and valve pocket 5 between each annular gas tank and valve body 1, being successively set between three annular gas tanks by three annular seal circles, realizing seal isolation.
Movable valve seat 6 entirety is the step cutting pattern structure matched with valve pocket 5 leading portion placing chamber, and its inside offers the placing chamber for settling valve rod 4, and the middle part of the bottom of this placing chamber offers adjustment hole; Simultaneously in the outside of movable valve seat 6, the first annular gas tank on valve pocket 5 is provided with annular gas tank, and the bottom of this annular gas tank offers the inner space of some through holes and movable valve seat 6, thus the inner chamber of movable valve seat 6 is formed the first air-inlet cavity.
Movable valve seat 6 entirety of structure like this is embedded in the placing chamber of valve pocket 5, and makes annular gas tank and the corresponding conducting of the first annular gas tank on valve pocket 5 on it, thus makes the inner chamber of movable valve seat 6 form the first air-inlet cavity.
Tapered sleeve nut 7 entirety is set on the end of valve pocket 5, for movable valve seat 6 being locked in valve pocket 5.
Valve rod 4, entirety assigns in movable valve seat 6, and is spirally connected with movable valve seat 6 inner chamber, its bottom assigns in spool 2 through the adjustment hole of movable valve seat 6 intracavity bottom, to drive spool 2 to move, top is stretched out movable valve seat 6 and is directly assigned in knob 11, is connected to form one with it.For the ease of operation, the side of this knob 11 is provided with sliding preventing part.
Meanwhile, in order to ensure the sealing of whole ratio adjusting valve, multiple O-ring seal is set between valve rod 4 and movable valve seat 6.
Spool 2, entirety is cylindricality, and its two ends are and the taper shape regulating movable valve seat 6 and valve pocket 5 adjustment apertures to match, middle part circle of position cylindricality.Simultaneously in order to coordinate with spring 3, cylindrical central part is provided with ring limiting board.
The spool 2 of structure is located in spring 3 thus, and entirety is placed in the gas mixing chamber of valve pocket 5, and the conus portion of its one end coordinates with valve pocket 5 adjustment apertures, regulates the size of valve pocket 5 adjustment apertures; And the other end of spool 2 is connected with valve rod 4, and with movable valve seat 6 adjustment apertures, realize regulating the size of movable valve seat 6 adjustment apertures.
Spacing by ring limiting board on spool 2 bottom spacing and valve pocket 5 of spring 3, all the time Pre strained state is in, coordinate with valve rod 4 thus, realize the adjustment of spool 2 being moved to formation, thus realize the synchronization regulation to valve pocket 5 adjustment apertures and movable valve seat 6 adjustment apertures.
Support 12 is for settling concentration indicating device, and it is placed in valve body 1.
Concentration scale dish 9 coordinates the concentration indicating device forming this gas ratio modulating valve with intensity indicator 10, wherein concentration scale dish 9 is ring, and entirety is placed on support 12.Intensity indicator 10 is the cylindrical of inner hollow, and top is provided with annular stop along limit, is provided with pointer.
The intensity indicator 10 of structure like this rushes across concentration scale dish 9, is embedded in support 12, and is set on tapered sleeve nut 7; Pointer simultaneously in intensity indicator 10 points to the scale on concentration scale dish 9.
Meanwhile, knob 11 assigns in intensity indicator 10, and is connected with valve rod 4, simultaneously by Cock screw 8 and intensity indicator 10 fixed-link, drives intensity indicator 10 and valve rod 4 to rotate thus by knob 11, and synchronous realization regulates and instruction.
In such scheme, during in order to avoid locking movable valve seat, on the impact of movable valve seat position, ensure precision.Tapered sleeve nut 7 adopts the mode of cone locking to substitute the mode of nut end face locking, the impact on movable valve seat position as far as possible when reducing to lock.
For this reason, in this example, valve pocket 5 end (namely stretching out the part of valve body 1), for round table-like, adopts tapered thread as locking screw outside it;
Coordinate with it, tapered sleeve nut 7 offers the cone shape hole with valve pocket 5 matching ends; Meanwhile, the inwall of this cone shape hole is provided with tapered thread, this tapered thread and valve pocket end epicone screw-thread fit are spirally connected.
Thus, tapered sleeve nut 7, by the tapered thread on cone shape hole and valve pocket 5 end epicone screw-thread fit, is set on valve pocket 5, and is spirally connected in valve pocket 5.Tapered sleeve nut 7 rotate forward tighten time, the cone shape hole inwall on tapered sleeve nut 7 will from surrounding radial compaction valve pocket 5 end, after valve pocket 5 end entirety is subject to radial pressure, by radial contraction, then radially overallly compresses movable valve seat 6.
By the mode of this cone locking, valve pocket 5 is radially overall compresses movable valve seat 6, can not have any impact, effectively overcome the drawback of end face locking to the position of movable valve seat 6.
On this basis, for the ease of the contraction of the round table-like end of valve pocket 5, offer some axial grooves along its circumference, some axial grooves are even apart from distribution along valve pocket 5 round table-like end circumference, round table-like for valve pocket 5 end is divided into some sections in circumference, thus is beneficial to deformation retract.
Alternatively, valve pocket 5 end (namely stretching out the part of valve body 1) is divided into two-part, and wherein leading portion portion is round table-like, and back segment portion is cylindrical, and the arranged outside of cylindrical back segment has straight thread as locking screw.
Coordinate with it on tapered sleeve nut 7 and offer the through hole with valve pocket matching ends, this through hole is also divided into two sections, front and back: the leading portion portion of through hole is cone shape hole, and this cone shape hole is corresponding with the round platform portion of valve pocket end; And the back segment portion of through hole is circular port, this circular port is corresponding with the cylindrical back segment portion of valve pocket end, is provided with straight thread inside it, and this straight thread coordinates with the straight thread on valve pocket end and is spirally connected.
Thus, tapered sleeve nut 7 entirety is set on valve pocket 5 end, and to be coordinated with straight thread on valve pocket 5 end by the straight thread on through hole and be spirally connected.
Tapered sleeve nut 7 rotate forward tighten time, tapered sleeve nut 7 radially moves down, and the inwall of the conical through-hole now on tapered sleeve nut 7 will from surrounding radial compaction valve pocket 5 end, after valve pocket 5 end entirety is subject to radial pressure, by radial contraction, radially overall compression movable valve seat 6 then.
Same, for the ease of the contraction of the round table-like end of valve pocket 5, offer some axial grooves along its circumference, some axial grooves are even apart from distribution along valve pocket 5 round table-like end circumference, round table-like for valve pocket 5 end is divided into some sections in circumference, thus is beneficial to deformation retract.
On this basis, after movable valve seat adjusts position on request, only need to rotate tapered sleeve nut 7, just by shrinking circular cone by movable valve seat fixing and locking, once completing concentration debugging and arranging.
In addition, knob and valve rod are connected to one in this example, intensity indicator and trip button separate, and intensity indicator activity is adjustable, is fixed by Cock screw and knob, and whole scheme is flexible, practical.
Moreover the spring 3 in this example adopts taper spring, outer end is located, and improves spool centering thus.Spool 2 size is little compared with valve pocket 5 inner cavity size, and one end is located by valve rod 4, and the other end then floats in valve pocket 5 inner chamber.Taper spring major part cylindrical can be positioned at valve pocket 5 inner chamber, and taper spring microcephaly inner circle can fixed spool 2, makes spool 2 and valve pocket 5 suction port keep good centering, and modification stability is better.
The gas ratio modulating valve formed thus, when its debugging, maintenance, concentration arranges conveniently, and precision improves, and working efficiency improves.
More than show and describe the advantage of the basic principle of this patent, major character and this patent.The technician of the industry should understand; this patent is not restricted to the described embodiments; the principle that this patent is just described described in above-described embodiment and specification; under the prerequisite not departing from this patent spirit and scope; this patent also has various changes and modifications, and these changes and improvements all fall within the scope of claimed this patent.The claimed scope of this patent is defined by appending claims and equivalent thereof.
Claims (10)
1. a high-precision gas ratio adjusting valve, described ratio adjusting valve comprises valve body, spool, Regulation spring, valve rod, valve pocket, movable valve seat, indicating device and knob, it is characterized in that, described movable valve seat is locked in valve pocket by the mode of cone locking.
2. a kind of high-precision gas ratio adjusting valve according to claim 1, is characterized in that, described movable valve seat passes through a tapered sleeve nut locking in valve pocket.
3. a kind of high-precision gas ratio adjusting valve according to claim 2, it is characterized in that, described valve pocket end is round table-like, adopt tapered thread as locking screw outside it, described tapered sleeve nut offers the cone shape hole with valve pocket matching ends, the inwall of described cone shape hole is provided with tapered thread, and described tapered thread and valve pocket end epicone screw-thread fit are spirally connected.
4. a kind of high-precision gas ratio adjusting valve according to claim 3, is characterized in that, described valve pocket end offers some axial grooves along its circumference.
5. a kind of high-precision gas ratio adjusting valve according to claim 4, it is characterized in that, the leading portion portion of described valve pocket end is round table-like, back segment portion is cylindrical, its arranged outside has straight thread as locking screw, described tapered sleeve nut offers the through hole with valve pocket matching ends, the leading portion portion of described through hole is cone shape hole, and described cone shape hole is corresponding with the round platform portion of valve pocket end; The back segment portion of described through hole is circular port, and described circular port is corresponding with the cylindrical back segment portion of valve pocket end, is provided with straight thread inside it, and described straight thread coordinates with the straight thread on valve pocket end and is spirally connected.
6. a kind of high-precision gas ratio adjusting valve according to claim 5, is characterized in that, the round platform portion of described valve pocket end offers some axial grooves along its circumference.
7. a kind of high-precision gas ratio adjusting valve according to claim 1, is characterized in that, described Regulation spring is cone shaped spring.
8. a kind of high-precision gas ratio adjusting valve according to claim 7, it is characterized in that, described spool coordinates with cone shaped spring, and its two ends are conical, and middle part is cylindrical.
9. a kind of high-precision gas ratio adjusting valve according to claim 1, it is characterized in that, described valve rod directly assigns in knob and connects as one.
10. a kind of high-precision gas ratio adjusting valve according to claim 1, it is characterized in that, described indicating device comprises indicator and dial, and described indicator is adjustable to be placed on knob, and coordinates with dial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510736237.0A CN105276226B (en) | 2015-11-03 | 2015-11-03 | A kind of high-precision gas ratio adjusting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510736237.0A CN105276226B (en) | 2015-11-03 | 2015-11-03 | A kind of high-precision gas ratio adjusting valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105276226A true CN105276226A (en) | 2016-01-27 |
| CN105276226B CN105276226B (en) | 2019-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510736237.0A Active CN105276226B (en) | 2015-11-03 | 2015-11-03 | A kind of high-precision gas ratio adjusting valve |
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| CN (1) | CN105276226B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110541949A (en) * | 2019-10-09 | 2019-12-06 | 常州赛乐医疗技术有限公司 | Bulldoze formula anesthetic vaporizer cone valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030024581A1 (en) * | 2001-04-18 | 2003-02-06 | Norihiro Nakamura | Spool valve device |
| CN2706641Y (en) * | 2004-05-20 | 2005-06-29 | 王雪敏 | Manual gas proportion valve |
| CN201071955Y (en) * | 2007-09-03 | 2008-06-11 | 镇江瑞昊工程塑料有限公司 | Combined valve especially for phosphorus oxytrichloride fluid |
| JP4805088B2 (en) * | 2006-09-11 | 2011-11-02 | 株式会社三栄水栓製作所 | Hot water tap |
| CN203797037U (en) * | 2014-04-07 | 2014-08-27 | 薛瑞华 | Regulating valve |
| CN205190834U (en) * | 2015-11-03 | 2016-04-27 | 捷锐企业(上海)有限公司 | Gaseous ratio adjusting valve of high accuracy |
-
2015
- 2015-11-03 CN CN201510736237.0A patent/CN105276226B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030024581A1 (en) * | 2001-04-18 | 2003-02-06 | Norihiro Nakamura | Spool valve device |
| CN2706641Y (en) * | 2004-05-20 | 2005-06-29 | 王雪敏 | Manual gas proportion valve |
| JP4805088B2 (en) * | 2006-09-11 | 2011-11-02 | 株式会社三栄水栓製作所 | Hot water tap |
| CN201071955Y (en) * | 2007-09-03 | 2008-06-11 | 镇江瑞昊工程塑料有限公司 | Combined valve especially for phosphorus oxytrichloride fluid |
| CN203797037U (en) * | 2014-04-07 | 2014-08-27 | 薛瑞华 | Regulating valve |
| CN205190834U (en) * | 2015-11-03 | 2016-04-27 | 捷锐企业(上海)有限公司 | Gaseous ratio adjusting valve of high accuracy |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110541949A (en) * | 2019-10-09 | 2019-12-06 | 常州赛乐医疗技术有限公司 | Bulldoze formula anesthetic vaporizer cone valve |
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| Publication number | Publication date |
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| CN105276226B (en) | 2019-04-12 |
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