CN103174840B - Static equilibrium valve - Google Patents
Static equilibrium valve Download PDFInfo
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- CN103174840B CN103174840B CN201310115885.5A CN201310115885A CN103174840B CN 103174840 B CN103174840 B CN 103174840B CN 201310115885 A CN201310115885 A CN 201310115885A CN 103174840 B CN103174840 B CN 103174840B
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Abstract
The invention provides a static equilibrium valve and belongs to the technical field of valves. The static equilibrium valve solves the problems, for example, an existing static equilibrium valve is strenuous in hand wheel rotating, and a valve core structure is complex. The static equilibrium valve comprises a valve body, wherein the interior of the valve body is a cavity. A water inlet and a water outlet are respectively arranged on the left side and the right side of the valve body, a valve core is arranged in the valve body, the inner end of a valve rod is connected with the valve core, and the outer end of the valve rod stretches out of the valve body and is connected with a hand wheel. The valve rod is provided with a platen, the valve core comprises a big valve core and a small valve core, the small valve core is fixedly connected with the inner end of the valve rod and arranged in the big valve core, and the outer side face of the small valve core is tightly attached to the inner side face of the big valve core. A reset spring is arranged in the valve body, one end of the reset spring abuts against the bottom portion of the valve body, and the other end of the reset spring abuts against the big valve core. The static equilibrium valve has the advantages of being labor-saving in operation, solving the problem of surging when the valve has a heavy caliber and a small opening, and the like.
Description
Technical field
The invention belongs to valve technology field, relate to a kind of equilibrium valve, particularly a kind of static balancing valve.
Background technique
Static balancing valve is also known as equilibrium valve, manual equilibrium valve, digital locked balance valve, dibit modulating valve etc., and it is the gap (aperture) by changing spool and valve seat, change flow through valve flow resistance to reach the object of adjust flux.Large bore valves, when regulating, when the aperture between spool and valve seat is less, because spool unbalanced force causes valve surge, thus can damages the component of valve inner, destroy the sealing of valve.
For above Problems existing, people have made improvement miscellaneous, and what have has also applied for patent, and such as Chinese patent literature data discloses Double-valve-core high-differential [application number: 201020693064.1, Authorization Notice No.: CN201916557U], it comprises valve seat, support, gland, upper cover, work in copper spirit, valve rod, valve gap and valve body, spool comprises large small valve core, small valve core is connected with stem bottom, and be arranged in big valve core by round nut, on the top of valve body, the arranged outside of big valve core has throttle sleeve, throttle sleeve offers flow window, the bottom of flow window is connected with valve seat, the middle part of valve seat offered head piece, big valve core was right against the top of head piece, body cavity wall is connected with below the valve seat in overcurrent epistome, entrance branch and outlet stool separate by body cavity wall.
This kind of valve adopts size double spool structure, reduce resistance when opening valve, but at throttle down or when making the aperture of valve diminish, due to the pressure of fluid, still effort is compared, and this kind of large small valve core is connected by round nut, big valve core adopts four balancing hole types, spool complicated structure.
Summary of the invention
The object of the invention is for the above-mentioned problems in the prior art, the static balancing valve of surge problems when providing a kind of rapid operation and solve large bore valves small guide vane.
Object of the present invention realizes by following technical proposal: a kind of static balancing valve, comprise the inner valve body for cavity, the left and right sides of valve body is respectively water intake and water outlet, spool is positioned at valve body, the inner of valve rod is connected with spool, outer end is stretched out outside valve body and is connected with handwheel, it is characterized in that, described valve rod has pressing plate, described spool comprises big valve core and small valve core, described small valve core is connected mutually with the inner of valve rod and is positioned at big valve core, the outer side surface of described small valve core and the inner side surface of big valve core are close to conjunction, Returnning spring is provided with in described valve body, one end of described Returnning spring is resisted against the bottom of above-mentioned valve body, the other end is resisted against on above-mentioned big valve core.
During unlatching, rotate handwheel, make small valve core move down disengaging big valve core by valve rod, between large small valve core, form fluid passage, reach the object of pressure release, thus reduce the resistance of fluid, abundant adjustment fluid flow, solve surge problems during valve small guide vane, Open valve is laborsaving.Be rotated further handwheel, pressing plate is made to push down big valve core and the pressure of the elastic force and fluid that overcome Returnning spring makes big valve core move down, open the fluid passage between big valve core and valve body, the aperture between big valve core and valve body is regulated by rotation hand wheel, regulate fluid flow, in the process, handwheel feel there will not be double infection suddenly, debugs laborsaving.During closedown, rotate backward handwheel, big valve core moves up under the elastic force of Returnning spring and the effect of hydrodynamic pressure, big valve core and valve body are formed and seal, then small valve core and big valve core are formed and seal, and fully regulate fluid flow, solve surge problems during valve small guide vane, in closing process, because the elastic force effect of Returnning spring greatly reduces the power of rotating required for handwheel, rapid operation.
In above-mentioned a kind of static balancing valve, described big valve core is cone table shape, and described small valve core is also in cone table shape, and the outer circumferential bottom described big valve core has annular gear edge, and have valve seat in described valve body, above-mentioned gear is along being resisted against on valve seat.
The diameter at the top of big valve core and small valve core is all less than the diameter of bottom, there is in big valve core the through hole run through, its inner side surface is the conical surface matched with the outer side surface of small valve core, big valve core and small valve core form hard sealing when being close to conjunction, gear edge and base lean and to position big valve core, and structure is simple.
In above-mentioned a kind of static balancing valve, there is between described big valve core and valve seat seal ring one.
Seal ring one seals the gap between big valve core and valve seat, makes the overall sealing performance of this valve good.
In above-mentioned a kind of static balancing valve, the bottom of described big valve core has annular slot one, and described body base has annular slot two, and one end of above-mentioned Returnning spring is positioned at annular slot one, and the other end is positioned at annular slot two.
Annular slot one and annular slot two are fixed the position of Returnning spring, Returnning spring is made to install firmly, prevent Returnning spring from departing from position in use for some time, cause the elastic force direction of Returnning spring to produce deviation, thus have influence on the normal running of valve.
In above-mentioned a kind of static balancing valve, have guide cylinder in described valve body, above-mentioned valve rod is positioned at guide cylinder and the inner side surface of the outer side surface of valve rod and guide cylinder is close to conjunction.
Guide cylinder plays guiding and spacing, and guide cylinder is the passage that valve rod moves up and down, even and if valve rod be subject to the brute force attack of fluid, valve rod also can not rock, and valve rod can not offset, and firmness is high, good stability.
In above-mentioned a kind of static balancing valve, described valve rod comprises screw mandrel and screw rod bushing, and one end of described screw mandrel is stretched out outside valve body and is connected with handwheel, and above-mentioned pressing plate is fixed on screw rod bushing.
Screw mandrel and screw rod bushing are threaded connection, rotation hand wheel, and screw mandrel precession or back-out screw rod bushing, to realize the object that screw rod bushing can move up and down.
In above-mentioned a kind of static balancing valve, have lock sleeve between described screw mandrel and guide cylinder, above-mentioned screw mandrel is axially fixed in valve body by lock sleeve.
Screw mandrel is axially fixed in valve body, and precision when valve rod band movable valve plug is moved up and down is high, and degree of regulation is high, and structure is simple.
In above-mentioned a kind of static balancing valve, between described screw mandrel and guide cylinder, be provided with seal ring two.
Seal ring two seals the gap between screw mandrel and guide cylinder, makes the overall sealing performance of this valve good.
In above-mentioned a kind of static balancing valve, the water outlet of described valve body and water intake are equipped with push type test head.
The setting of test head, when needed, can carry out real-time detection to the data such as pressure and flow velocity of the fluid of valve body water outlet and water inlet at any time.
In above-mentioned a kind of static balancing valve, described valve rod is fixed with locating stud, and locating stud is positioned at outside valve body.
Preset the rotational travel of handwheel.
Compared with prior art, static balancing valve provided by the invention has the following advantages:
1, this static balancing valve adopts size double spool structure, effectively reducing the resistance of the fluid of valve when opening or close, fully regulating fluid flow, solves surge problems during valve small guide vane.
2, this static balancing valve is provided with Returnning spring between valve body and big valve core, and Returnning spring has and promotes the closed trend of big valve core and valve seat, greatly reduces the power that operator is required when wheel is started in debug process transfer, rapid operation.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of this static balancing valve.
Fig. 2 is the overall structure sectional view of this static balancing valve.
Fig. 3 is the enlarged view of the a-quadrant of Fig. 2 of this static balancing valve.
Fig. 4 is the big valve core of this static balancing valve and the structural representation of small valve core.
Fig. 5 is the plan view of the pressing plate of this static balancing valve.
In figure, 1, valve body; 2, water intake; 3, water outlet; 4, spool; 4a, big valve core; 4a1, gear edge; 4a2, draw-in groove one; 4b, small valve core; 5, valve rod; 5a, screw mandrel; 5b, screw rod bushing; 6, handwheel; 7, pressing plate; 8, Returnning spring; 9, valve seat; 10, seal ring one; 11, draw-in groove two; 12, bonnet; 13, bottom flange; 14, guide cylinder; 15, lock sleeve; 16, seal ring two; 17, push type test head; 18, locating stud.
Embodiment
Be below specific embodiments of the invention and by reference to the accompanying drawings, technological scheme of the present invention is further described, but the present invention be not limited to these embodiments.
As shown in Figure 1 and Figure 2, this static balancing valve comprises valve body 1, spool 4, valve rod 5, handwheel 6 and Returnning spring 8.
The inside of valve body 1 is cavity, is water intake 2 on the left of it, and right side is water outlet 3, and water outlet 3 and water intake 2 place all have a through hole, for installing push type test head 17, conveniently detects the data such as flow, pressure at valve body 1 water outlet 3 and water intake 2 place.The top of valve body 1 has been bolted bonnet 12, and the middle part in the cavity of valve body 1 has valve seat 9, and the lower thread of valve body 1 is connected with bottom flange 13, and the inner side of bottom flange 13 has annular slot 2 11, and bottom flange 13 also has nut.
Have a tubular guide cylinder 14 in bonnet 12, after installation, guide cylinder 14 is positioned at the cavity of valve body 1 inside.
Valve rod 5 is positioned at guide cylinder 14, it comprises screw mandrel 5a and screw rod bushing 5b, and the outer side surface of screw mandrel 5a and screw rod bushing 5b all fits with the inner side surface of guide cylinder 14, and the movement of guide cylinder 14 pairs of valve rods 5 play the guiding role, and make valve rod 5 can keep stable under the impact of fluid, can not skew be produced.Screw mandrel 5a and screw rod bushing 5b is threaded connection, the other end of screw mandrel 5a stretches out outside bonnet 12 and is connected with handwheel 6, screw mandrel 5a also has locating stud 18, for setting the stroke that handwheel 6 rotates, have lock sleeve 15 and seal ring 2 16 between screw mandrel 5a and guide cylinder 14, lock sleeve 15 is fixed in bonnet 12 by pressure strip, thus makes screw mandrel 5a be axially fixed in guide cylinder 14, seal ring 2 16 seals the gap between screw mandrel 5a and guide cylinder 14, makes the overall sealing performance of valve good.
Spool 4 is positioned at the cavity of valve body 1, comprises big valve core 4a and small valve core 4b, and as shown in Figure 2, Figure 4 shows, big valve core 4a and small valve core 4b is all in cone table shape, and the diameter at top is less than the diameter of bottom, and small valve core 4b is fixed on the bottom of the screw rod bushing 5b of valve rod 5.Have the through hole run through in big valve core 4a, the shape of the inner side surface of big valve core 4a and the mating shapes of small valve core 4b outer side surface, small valve core 4b is positioned at big valve core 4a, and the inner side surface of the outer side surface of small valve core 4b and big valve core 4a is close to conjunction, is formed and firmly seals.The outer circumferential of the bottom of big valve core 4a has annular gear along 4a1, annular gear is resisted against on valve seat 9 along 4a1, blocks the fluid passage between big valve core 4a and valve body 1, is also provided with seal ring 1 between big valve core 4a and valve seat 9, gap between sealing big valve core 4a and valve seat 9, good sealing effect.The end face of the bottom of big valve core 4a has annular slot one 4a2.
Pressing plate 7 is fixed on the middle lower end of screw rod bushing 5b, as shown in Figure 5, it is cross, when pressing plate 7 is pressed in the top of big valve core 4a, pressing plate 7 can not cover the through hole above big valve core 4a completely, and namely fluid can flow into the inside of big valve core 4a from the gap between pressing plate 7 and big valve core 4a.
Returnning spring 8 is positioned at the bottom of valve body 1, one end is positioned at annular slot one 4a2 of big valve core 4a bottom surface, the other end is positioned at the annular slot 2 11 on bottom flange 13, this kind of structure makes Returnning spring 8 be fixed in valve body 1, firmness is high, good stability, the elastic force of Returnning spring 8 is very strong, can the gear of big valve core 4a be made along on the 4a1 valve seat 9 being resisted against in valve body 1 tightly by jack-up big valve core 4a.
During use, rotation hand wheel 6, handwheel 6 drives screw mandrel 5a to rotate, the rotation of screw mandrel 5a makes screw rod bushing 5b slowly move down, thus make small valve core 4b depart from big valve core 4a, fluid flows through from the gap between big valve core 4a and small valve core 4b, reach the object of pressure release, reduce the resistance of fluid, regulate fluid by flow during spool 4, solve the surge problems of valve body 1, screw rod bushing 5b moves down into a certain degree, pressing plate 7 on screw rod bushing 5b is pressed in the top of big valve core 4a, and the elastic force promotion big valve core 4a overcoming spring moves down, fluid passage is now the fluid passage of fluid passage between big valve core 4a and valve seat 9 and big valve core 4a and small valve core 4b, by rotating handwheel 6, control moving up and down of screw rod bushing 5b, reach the object of regulating spool 4 aperture, thus reach the fluid flow and pressure etc. of regulating valve.When needing throttle down or regulating valve to less aperture, counterrotating handwheel 6, make screw rod bushing 5b moves, pressing plate 7 moves and no longer pushes down big valve core 4a, big valve core 4a is moved by jack-up under the effect of Returnning spring 8 elastic force, makes big valve core 4a be resisted against on pressing plate 7, and this process leans on the effect of Returnning spring 8 elastic force to make big valve core 4a moves, reduce the power that operator's rotation hand wheel 6 uses, rapid operation.Screw rod bushing 5b moves on continuing, the gear of big valve core 4a is resisted against on valve seat 9 along 4a1, big valve core 4a and valve body 1 are formed and seal, screw rod bushing 5b moves on continuing, the outer side surface of small valve core 4b is fitted on the inner side surface of big valve core 4a, big valve core 4a and small valve core 4b is formed and seals, and now valve is in the state of closedown.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although more employ valve body 1, water outlet 2, water intake 3, spool 4, big valve core 4a herein, keep off along the term such as 4a1, draw-in groove one 4a2, small valve core 4b, valve rod 5, screw mandrel 5a, screw rod bushing 5b, handwheel 6, pressing plate 7, Returnning spring 8, valve seat 9, seal ring 1, draw-in groove 2 11, bonnet 12, bottom flange 13, guide cylinder 14, lock sleeve 15, seal ring 2 16, push type test head 17, locating stud 18, do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with spirit of the present invention.
Claims (9)
1. a static balancing valve, comprise the inner valve body (1) for cavity, the left and right sides of valve body (1) is respectively water intake (2) and water outlet (3), spool (4) is positioned at valve body (1), the inner of valve rod (5) is connected with spool (4), outer end is stretched out valve body (1) and is connected with handwheel (6) outward, it is characterized in that, described valve rod (5) has pressing plate (7), described spool (4) comprises big valve core (4a) and small valve core (4b), described small valve core (4b) and the inner of valve rod (5) are connected mutually and are positioned at big valve core (4a), the outer side surface of described small valve core (4b) and the inner side surface of big valve core (4a) are close to conjunction, Returnning spring (8) is provided with in described valve body (1), one end of described Returnning spring (8) is resisted against the bottom of above-mentioned valve body (1), the other end is resisted against on above-mentioned big valve core (4a), described big valve core (4a) is in cone table shape, described small valve core (4b) is also in cone table shape, the outer circumferential of described big valve core (4a) bottom has annular gear along (4a1), in described valve body (1), there is valve seat (9), above-mentioned gear is resisted against on valve seat (9) along (4a1).
2. a kind of static balancing valve according to claim 1, is characterized in that, has seal ring one (10) between described big valve core (4a) and valve seat (9).
3. a kind of static balancing valve according to claim 2, it is characterized in that, the bottom of described big valve core (4a) has annular slot one (4a2), described valve body (1) bottom has annular slot two (11), one end of above-mentioned Returnning spring (8) is positioned at annular slot one (4a2), and the other end is positioned at annular slot two (11).
4. a kind of static balancing valve according to claim 1 or 2 or 3, it is characterized in that, have guide cylinder (14) in described valve body (1), above-mentioned valve rod (5) is positioned at guide cylinder (14) and the inner side surface of the outer side surface of valve rod (5) and guide cylinder (14) is close to conjunction.
5. a kind of static balancing valve according to claim 1 or 2 or 3, it is characterized in that, described valve rod (5) comprises screw mandrel (5a) and screw rod bushing (5b), one end of described screw mandrel (5a) is stretched out valve body (1) and is connected with handwheel (6) outward, and above-mentioned pressing plate (7) is fixed on screw rod bushing (5b).
6. a kind of static balancing valve according to claim 5, it is characterized in that, have lock sleeve (15) between described screw mandrel (5a) and guide cylinder (14), above-mentioned screw mandrel (5a) is axially fixed in valve body (1) by lock sleeve (15).
7. a kind of static balancing valve according to claim 5, is characterized in that, is provided with seal ring two (16) between described screw mandrel (5a) and guide cylinder (14).
8. a kind of static balancing valve according to claim 1 or 2 or 3, is characterized in that, water outlet (3) and the water intake (2) of described valve body (1) are equipped with push type test head (17).
9. a kind of static balancing valve according to claim 1 or 2 or 3, is characterized in that, described valve rod (5) is fixed with locating stud (18), and locating stud (18) is positioned at valve body (1) outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310115885.5A CN103174840B (en) | 2012-12-03 | 2013-04-03 | Static equilibrium valve |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105216446 | 2012-12-03 | ||
| CN201210521644.6 | 2012-12-03 | ||
| CN 201210521644 CN102943910A (en) | 2012-12-03 | 2012-12-03 | Static balance valve |
| CN201310115885.5A CN103174840B (en) | 2012-12-03 | 2013-04-03 | Static equilibrium valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103174840A CN103174840A (en) | 2013-06-26 |
| CN103174840B true CN103174840B (en) | 2015-07-22 |
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ID=47726879
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210521644 Pending CN102943910A (en) | 2012-12-03 | 2012-12-03 | Static balance valve |
| CN201310115885.5A Expired - Fee Related CN103174840B (en) | 2012-12-03 | 2013-04-03 | Static equilibrium valve |
| CN 201320165750 Expired - Lifetime CN203272806U (en) | 2012-12-03 | 2013-04-03 | Static balance valve |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210521644 Pending CN102943910A (en) | 2012-12-03 | 2012-12-03 | Static balance valve |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320165750 Expired - Lifetime CN203272806U (en) | 2012-12-03 | 2013-04-03 | Static balance valve |
Country Status (1)
| Country | Link |
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| CN (3) | CN102943910A (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943910A (en) * | 2012-12-03 | 2013-02-27 | 卓旦春 | Static balance valve |
| US10690263B2 (en) * | 2015-05-06 | 2020-06-23 | Fisher Controls International Llc | Valve trim apparatus having multiple fluid flow control members |
| CN106286852A (en) * | 2015-06-23 | 2017-01-04 | 张家港市舜辰机械有限公司 | A kind of valve |
| CN106321857A (en) * | 2015-06-23 | 2017-01-11 | 张家港市舜辰机械有限公司 | High-tightness valve |
| CN106321944A (en) * | 2015-06-23 | 2017-01-11 | 张家港市舜辰机械有限公司 | Hand pressure valve |
| CN106321859A (en) * | 2015-06-23 | 2017-01-11 | 张家港市舜辰机械有限公司 | Spring mounting structure of valve |
| CN106764040A (en) * | 2017-01-23 | 2017-05-31 | 森格斯输配设备(宁波)有限公司 | A kind of balanced valve for gas pressure regulating valve |
| JP6505151B2 (en) * | 2017-03-23 | 2019-04-24 | 株式会社不二工機 | Flow control valve |
| CN107131305A (en) * | 2017-05-09 | 2017-09-05 | 厦门匠仕工业设计有限公司 | A kind of pressure relief and the angle valve with the pressure relief |
| CN110094528A (en) * | 2019-06-13 | 2019-08-06 | 云南煤化集团工程技术有限公司 | A kind of open and close valve for gasification of coal lock slag lock |
| CN111828421B (en) * | 2020-07-14 | 2022-12-09 | 江苏汇智高端工程机械创新中心有限公司 | Valve core and balance valve |
| CN114483696B (en) * | 2022-02-17 | 2022-10-14 | 河北墨峻科技有限公司 | Multipurpose valve with throttling and unloading functions |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203272806U (en) * | 2012-12-03 | 2013-11-06 | 卓旦春 | Static balance valve |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6729351B2 (en) * | 2000-02-22 | 2004-05-04 | Delphi Technologies, Inc. | Expanded range multiple-stage metering valve |
| US6745794B2 (en) * | 2002-06-07 | 2004-06-08 | Praxair Technology, Inc. | Flow control valve |
| CN101813192B (en) * | 2010-04-13 | 2011-06-08 | 无锡市亚迪流体控制技术有限公司 | High-flow adjustable ratio control valve |
| CN101975308B (en) * | 2010-11-02 | 2012-07-18 | 卓旦春 | Static balance valve |
| CN102628523B (en) * | 2012-04-24 | 2014-12-03 | 卓旦春 | Pilot type control valve |
-
2012
- 2012-12-03 CN CN 201210521644 patent/CN102943910A/en active Pending
-
2013
- 2013-04-03 CN CN201310115885.5A patent/CN103174840B/en not_active Expired - Fee Related
- 2013-04-03 CN CN 201320165750 patent/CN203272806U/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203272806U (en) * | 2012-12-03 | 2013-11-06 | 卓旦春 | Static balance valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN203272806U (en) | 2013-11-06 |
| CN103174840A (en) | 2013-06-26 |
| CN102943910A (en) | 2013-02-27 |
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