CN104930197A - Flow regulating valve - Google Patents
Flow regulating valve Download PDFInfo
- Publication number
- CN104930197A CN104930197A CN201510255322.5A CN201510255322A CN104930197A CN 104930197 A CN104930197 A CN 104930197A CN 201510255322 A CN201510255322 A CN 201510255322A CN 104930197 A CN104930197 A CN 104930197A
- Authority
- CN
- China
- Prior art keywords
- valve
- flow
- valve seat
- rate adjustment
- 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.)
- Granted
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Classifications
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- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/52—Means for additional adjustment of the rate of flow
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- 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
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
Abstract
The invention discloses a flow regulating valve which is characterized in that a barrel-shaped guide sleeve is arranged at the lower end of a valve core; flow adjusting windows are formed in the barrel-shaped guide sleeve and composed of a triangular window and a rectangular window; the upper layer is the triangular window with an upward vertex angle; a barrel-shaped valve seat is composed of a valve seat and a valve barrel; the inner diameter of the valve seat is smaller than that of the valve barrel; an assembly boss is arranged in the middle of the outer wall of the valve seat; an assembly groove matched with the lower end part of the assembly boss of the valve seat is formed at a liquid outlet in a valve body; the valve seat is connected with the valve body through the assembly boss and the assembly groove; an assembly groove matched with the upper end part of the assembly boss of the valve seat is formed in the inner wall of the lower end of the valve barrel; the valve barrel is connected with the valve seat through the assembly groove and the assembly boss; and the valve barrel and the valve seat are fixed in the valve body through a valve cover and bolts. According to the flow regulating valve, cut-off sealing surfaces of the valve core and the valve seat are separated from a flow adjusting surface, so that the phenomenon that the valve is damaged due to washing when being opened slightly is avoided, therefore, the service life of the valve is prolonged greatly; and the flow regulating valve has the advantages of accurate flow adjustment, small flow fluctuation during starting, low noise and the like.
Description
Technical field
The present invention relates to valve gate technology, specifically a kind of simple to operate, flow control be convenient, the flow control valve of long service life.
Background technique
As everyone knows, flow control valve in valve is widely used in thermal power generation, in the dynamic system of heat energy such as petrochemical industry, particularly in thermal power generation, application in the thermodynamic systems such as petrochemical industry is more general, flow control valve is provided with valve body, cylinder valve bore is provided with in valve body, valve seat orifice has the admission chamber be connected with valve seat orifice, valve body in the middle part of valve seat orifice is provided with out sap cavity, admission chamber with go out the passage of sap cavity respectively in valve body and be connected with liquid outlet with liquid entering hole, the tubular valve seat matched with valve seat orifice is provided with in valve seat orifice, valve rod is provided with in valve seat, valve rod lower end is provided with spool, it is skewed taper type valve core sealed cover that the periphery of spool lower end surface is provided with valve rod axis, valve base inner wall bottom is provided with the sealing surface of seat matched with valve core sealed cover, the barrel of valve seat is provided with through flow hole, valve seat lower end is against on valve seat orifice platform, the upper end of valve seat is provided with the gland of central zone valve rod hole, gland is connected with valve body through bolt, the upper end of valve rod is connected with handwheel through the valve rod hole on gland.
At present, some flow control valves are that decompression type regulates step by step, and spool is made up of multiple valve core head, what have is also provided with tubular flow guide sleeve, and flow guide sleeve lower end is provided with sealing surface of seat, and water conservancy diversion jacket wall is provided with pod apertures, by cooperatively interacting of spool and flow guide sleeve, regulating and controlling flow.
Above-mentioned flow control valve be when little trace regulates less than one, easily there is " crack punching damage " phenomenon, greatly reduce valve working life.When valve inlet pressure is certain, spool aperture is less, and the scouring force that spool, sealing surface of seat bear is larger, if spool is in very little aperture for a long time, the sealing surface of spool, valve seat will be damaged; Two Flow-rate adjustment when being adjust fluxes are inaccurate, flowed fluctuation large and produce larger noise.
Summary of the invention
Object of the present invention is exactly to overcome the deficiencies in the prior art, provides a kind of being cooperatively interacted by spool and valve seat namely to realize flow smooth adjustment, simple to operate, long service life, Maintenance and Repair flow control valve easily.
The present invention can be reached by following measure:
A kind of flow control valve, be provided with valve body, cylinder valve bore is provided with in valve body, valve body is provided with the admission chamber that is connected through valve seat orifice and goes out sap cavity, admission chamber with go out sap cavity and be connected with liquid outlet with liquid entering hole through valve channel respectively, the tubular valve seat matched with valve seat orifice is provided with in valve seat orifice, valve rod is provided with in tubular valve seat, valve rod lower end is provided with spool, it is skewed taper type valve core sealed cover that the periphery of spool lower end surface is provided with valve rod axis, tubular valve seat lower inner wall is provided with the tubular sealing surface of seat matched with valve core sealed cover, the barrel of tubular valve seat is provided with through flow hole, valve seat lower end is against on valve seat orifice step, the upper end of tubular valve seat is provided with the valve gap of central zone valve rod hole, valve body upper end surface is provided with sealed groove, valve gap is connected with valve body through bolt presses sealing gasket, it is characterized in that spool lower end is provided with tubular flow guide sleeve, water conservancy diversion jacket wall is provided with Flow-rate adjustment window, Flow-rate adjustment window is by triangular windows and rectangular window is two-layer up and down forms, upper strata is drift angle triangular windows upward, tubular valve seat is made up of valve seat and valve cylinder, the internal diameter of valve seat is less than valve cylinder internal diameter, mounting boss is provided with in the middle part of valve seat outer wall, in valve body, liquid outlet is provided with the assembling groove coordinated with the mounting boss underpart of valve seat, sealing gasket is provided with in assembling groove, valve seat is connected with valve body with the sealing gasket in assembling groove compression fit groove through mounting boss, valve cylinder lower end inner wall is provided with the assembling groove coordinated with the mounting boss upper end portion of valve seat, valve cylinder is connected with valve seat with mounting boss through assembling groove, valve cylinder and valve seat are through valve gap and be bolted in valve body.
Valve seat bore upper end of the present invention is provided with the narrow sealing surface matched with the sealing surface of spool external diameter lower end, and above-mentioned sealing surface is chamfering shape, and valve base sealing face width is not more than 2.5mm, is far smaller than the width of valve core sealed cover.
The underpart inwall of sealing surface of seat of the present invention is provided with Flow-rate adjustment boss, Flow-rate adjustment boss upper end is at least 5 mm apart from the spacing of sealing surface, dirty groove is received jointly to be formed with spool, to hold the foreign material in pipeline, the upper-end surface of Flow-rate adjustment boss can be the plane with valve seat axis perpendicular, also can be the inclined-plane becoming 40-50 degree angle with valve seat axis, to get rid of the foreign material received in dirty groove better.
Flow guide sleeve on spool of the present invention is tubular, upper periphery and the spool lower end surface of flow guide sleeve are tightly connected, flow guide sleeve is gone into battle and is shown the Flow-rate adjustment window of wedge angle isosceles triangle upward, when valve core sealed cover and sealing surface of seat are by when touching, the upper end of Flow-rate adjustment window will be not less than 3 mm lower than valve seat Flow-rate adjustment boss upper-end surface, adjustment boss on valve seat matches with the Flow-rate adjustment window on flow guide sleeve and forms control to flow and adjustment, make the cut-off sealing surface that spool and valve seat are formed, the Flow-rate adjustment face formed with the adjustment boss on valve seat and the Flow-rate adjustment window on flow guide sleeve is separated, prevent " crack punching is damaged " phenomenon, make Flow-rate adjustment accurate, during unlatching flowed fluctuation little and reduce noise.
Flow guide sleeve under the Flow-rate adjustment window of wedge angle of the present invention isosceles triangle is upward provided with rectangular through-flow mouth, to adapt to large volume, oarse-grained foreign material in the through-flow or excretion valve body of large discharge and pipeline.
The working principle of invention: the underpart inwall inventing described sealing surface of seat is provided with Flow-rate adjustment boss, Flow-rate adjustment boss upper end is at least 5 mm apart from the spacing of sealing surface, dirty groove is received jointly to be formed with spool, to hold the foreign material in pipeline, flow guide sleeve on spool of the present invention is tubular, upper periphery and the spool lower end surface of flow guide sleeve are tightly connected, flow guide sleeve is gone into battle and is shown the Flow-rate adjustment window of wedge angle isosceles triangle upward, when valve core sealed cover and sealing surface of seat are by when touching, the upper end of Flow-rate adjustment window will be not less than 3 mm lower than valve seat Flow-rate adjustment boss upper-end surface, adjustment boss on valve seat matches with the Flow-rate adjustment window on flow guide sleeve and forms control to flow and adjustment.When valve opening, first sealing surface of seat is separated with valve core sealed cover, suppose that the upper end of Flow-rate adjustment window is lower than valve seat Flow-rate adjustment boss upper-end surface 10mm, do not have flow when valve opening during 10mm, but sealing surface of seat and valve core sealed cover have been separated the height of 10mm, after valve opening is more than 10mm, now on flow guide sleeve, Flow-rate adjustment window just has fluid process, then to be matched with the Flow-rate adjustment window on flow guide sleeve by the adjustment boss on valve seat and to control flow and regulate.Such design completely solves " the crack punching is damaged " phenomenon when flow needs trace to regulate and small flow regulates.Along with the aperture of valve increases, fluid flows through and regulates the flow of window larger, when foreign material in valve or pipeline are more or volume is larger, can spool standard-sized sheet, and allow the rectangular window exits valve body that these foreign material are provided with along with flow guide sleeve bottom.
The present invention is by the change of valve internal part structure, for fluid defines specific runner, the cut-off sealing surface of spool and valve seat and Flow-rate adjustment face are separated, the cut-off sealing surface of valve seat, spool is made to avoid washing away of small flow fluid, avoid occurring " crack punching is damaged " phenomenon, particularly substantially increase the working life of valve; Adjustment boss on valve seat and the Flow-rate adjustment window on flow guide sleeve form Flow-rate adjustment face, the spool sealing surface corresponding with valve seat will no longer bear the effect of adjust flux, such spool regulates window and Flow-rate adjustment boss to cooperatively interact, prevent " crack punching damage " phenomenon, accurately, when opening the little and noise of flowed fluctuation reduces to make Flow-rate adjustment.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is a kind of structural representation of valve seat in the present invention.
Fig. 3 is the partial enlarged drawing of Fig. 1.
Fig. 4 is a kind of structural representation of spool in the present invention.
Fig. 5 is that the one of flow guide sleeve in the present invention launches schematic diagram.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
As shown in the figure: a kind of flow control valve, be provided with valve body, cylinder valve bore is provided with in valve body 1, valve body 1 is provided with the admission chamber that is connected through valve seat orifice and goes out sap cavity, admission chamber with go out sap cavity and be connected with liquid outlet with liquid entering hole through valve channel respectively, the tubular valve seat matched with valve seat orifice is provided with in valve seat orifice, valve rod 2 is provided with in tubular valve seat, valve rod 2 lower end is provided with spool 3, it is skewed taper type valve core sealed cover 4 that the periphery of spool 3 lower end surface is provided with valve rod axis, tubular valve seat lower inner wall is provided with the tubular sealing surface of seat matched with spool 3 sealing surface, the barrel of tubular valve seat is provided with through flow hole, valve seat lower end is against on valve seat orifice step, the upper end of tubular valve seat is provided with the gland 5 of central zone valve rod hole, gland 5 is connected with valve body 1 through bolt, the structure of above-mentioned each constituent element and the interconnected relationship between them same as the prior art, this does not repeat, the invention is characterized in that spool 3 lower end is provided with tubular flow guide sleeve 6, flow guide sleeve 6 wall is provided with Flow-rate adjustment window, Flow-rate adjustment window is by triangular windows and rectangular window is two-layer up and down forms, upper strata is drift angle triangular windows upward, tubular valve seat is made up of valve seat 7 and valve cylinder 8, the internal diameter of valve seat 7 is less than valve cylinder 3 internal diameter, mounting boss 9 is provided with in the middle part of valve seat 7 outer wall, in valve body 1, liquid outlet is provided with the assembling groove coordinated with mounting boss 9 underpart of valve seat, valve seat 7 is connected with valve body 1 with assembling groove through mounting boss 9, valve cylinder 8 lower end inner wall is provided with the assembling groove coordinated with the mounting boss upper end portion of valve seat, valve cylinder 8 is connected with valve seat 1 with mounting boss 9 through assembling groove, valve cylinder 8 and valve seat 7 are through valve gap 5 and be bolted in valve body, mounting boss 9 times, lower end surface is generally provided with sealing gasket, Leakage prevention, valve seat 7 internal diameter upper end of the present invention is provided with the narrow sealing surface 10 matched with the sealing surface of spool 3 external diameter lower end, above-mentioned sealing surface is chamfering shape, valve base sealing face width is not more than 2.5mm, be far smaller than the width of valve core sealed cover, be commonly referred to line contact sealing face.
Valve seat 7 underpart of the present invention inwall is provided with Flow-rate adjustment boss 11, Flow-rate adjustment boss 11 upper end is at least 5 mm apart from the spacing h of sealing surface 10, dirty groove 12 is received jointly to be formed with the flow guide sleeve 6 on spool 3, to hold the foreign material in pipeline, the upper-end surface of Flow-rate adjustment boss 11 can be the plane with valve seat 7 axis perpendicular, also can be the inclined-plane with valve seat axis 40-50 degree angle, to get rid of the foreign material received in dirty groove better, this face be also called Flow-rate adjustment face with Flow-rate adjustment boss 11 infall, it coordinates the adjustment realized flow with flow guide sleeve.
Flow guide sleeve 6 on spool 3 of the present invention is in tubular, upper periphery and spool 3 lower end surface of flow guide sleeve 6 are tightly connected, medium is not allowed to enter in flow guide sleeve 6 by joint, flow guide sleeve 6 is gone into battle and is shown the Flow-rate adjustment window 12 of wedge angle isosceles triangle upward, when valve core sealed cover and sealing surface of seat 10 are by when touching, the upper end of Flow-rate adjustment window 12 is not less than 3 mm apart from valve seat Flow-rate adjustment boss 11 upper-end surface, adjustment boss 11 on valve seat 7 matches with the Flow-rate adjustment window 12 on flow guide sleeve 6 adjustment formed flow, the Flow-rate adjustment face that adjustment boss 11 on the cut-off sealing surface of spool 3 and valve seat 7 formation and valve seat 7 and the Flow-rate adjustment window 12 on flow guide sleeve 6 are formed is separated, prevent " crack punching is damaged " phenomenon, make Flow-rate adjustment accurate, during unlatching flowed fluctuation little and reduce noise.In addition, the flow guide sleeve under the Flow-rate adjustment window of wedge angle of the present invention isosceles triangle is upward provided with rectangular through-flow mouth, to adapt to large volume, oarse-grained foreign material in the through-flow or excretion valve body of large discharge and pipeline.
The present invention is by the change of valve internal part structure, for fluid defines specific runner, the cut-off sealing surface of spool and valve seat and Flow-rate adjustment face are separated, the cut-off sealing surface of valve seat, spool is made to avoid washing away of small flow fluid, avoid occurring " crack punching is damaged " phenomenon, particularly substantially increase the working life of valve; The Flow-rate adjustment face that adjustment boss on valve seat and the Flow-rate adjustment window on flow guide sleeve are formed, the spool sealing surface corresponding with valve seat will no longer bear the effect of adjust flux, such spool regulates window and Flow-rate adjustment boss to cooperatively interact, prevent " crack punching damage " phenomenon, accurately, when opening the little and noise of flowed fluctuation reduces to make Flow-rate adjustment.
Claims (7)
1. a flow control valve, be provided with valve body, cylinder valve bore is provided with in valve body, valve body is provided with the admission chamber that is connected through valve seat orifice and goes out sap cavity, admission chamber with go out sap cavity and be connected with liquid outlet with liquid entering hole through valve channel respectively, the tubular valve seat matched with valve seat orifice is provided with in valve seat orifice, valve rod is provided with in tubular valve seat, valve rod lower end is provided with spool, it is skewed taper type valve core sealed cover that the periphery of spool lower end surface is provided with valve rod axis, tubular valve seat lower inner wall is provided with the tubular sealing surface of seat matched with valve core sealed cover, the barrel of tubular valve seat is provided with through flow hole, valve seat lower end is against on valve seat orifice step, the upper end of tubular valve seat is provided with the gland of central zone valve rod hole, gland is connected with valve body through bolt, it is characterized in that spool lower end is provided with tubular flow guide sleeve, water conservancy diversion jacket wall is provided with Flow-rate adjustment window, Flow-rate adjustment window is by triangular windows and rectangular window is two-layer up and down forms, upper strata is drift angle triangular windows upward, tubular valve seat is made up of valve seat and valve cylinder, the internal diameter of valve seat is less than valve cylinder internal diameter, mounting boss is provided with in the middle part of valve seat outer wall, in valve body, liquid outlet is provided with the assembling groove coordinated with the mounting boss underpart of valve seat, valve seat is connected with valve body with assembling groove through mounting boss, valve cylinder lower end inner wall is provided with the assembling groove coordinated with the mounting boss upper end portion of valve seat, valve cylinder is connected with valve seat with mounting boss through assembling groove, valve cylinder and valve seat are through valve gap and be bolted in valve body.
2. a kind of flow control valve according to claim 1, it is characterized in that valve seat bore upper end is provided with the narrow sealing surface matched with the sealing surface of spool external diameter lower end, valve base sealing face width is not more than 2.5mm.
3. a kind of flow control valve according to claim 1, is characterized in that valve seat underpart inwall is provided with Flow-rate adjustment boss, and Flow-rate adjustment boss upper end is at least 5 mm apart from the spacing of sealing surface, and Flow-rate adjustment boss and spool are formed jointly receives dirty groove.
4. a kind of flow control valve according to claim 3, is characterized in that the upper-end surface of Flow-rate adjustment boss and the plane of valve seat axis perpendicular.
5. a kind of flow control valve according to claim 3, is characterized in that the upper-end surface of Flow-rate adjustment boss and the inclined-plane of valve seat axis 40-50 degree angle.
6. a kind of flow control valve according to claim 1, it is characterized in that the flow guide sleeve on spool is tubular, upper periphery and the spool lower end surface of flow guide sleeve are tightly connected, flow guide sleeve is gone into battle and is shown the Flow-rate adjustment window of wedge angle isosceles triangle upward, when valve core sealed cover and sealing surface of seat are by when touching, the upper end of Flow-rate adjustment window is not less than 3 mm apart from valve seat Flow-rate adjustment boss upper-end surface, adjustment boss on valve seat matches with the Flow-rate adjustment window on flow guide sleeve the adjustment formed flow, the Flow-rate adjustment face that adjustment boss on the cut-off sealing surface of spool and valve seat formation and valve seat and the Flow-rate adjustment window on flow guide sleeve are formed is separated.
7. a kind of flow control valve according to claim 6, is characterized in that the flow guide sleeve under the Flow-rate adjustment window of described wedge angle isosceles triangle is upward provided with rectangular through-flow mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510255322.5A CN104930197B (en) | 2015-05-19 | 2015-05-19 | A kind of flow control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510255322.5A CN104930197B (en) | 2015-05-19 | 2015-05-19 | A kind of flow control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104930197A true CN104930197A (en) | 2015-09-23 |
| CN104930197B CN104930197B (en) | 2017-08-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510255322.5A Active CN104930197B (en) | 2015-05-19 | 2015-05-19 | A kind of flow control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104930197B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266542A (en) * | 2018-03-22 | 2018-07-10 | 特卓（上海）工业控制阀有限公司 | Claw deflecting valve |
| CN108730550A (en) * | 2017-04-17 | 2018-11-02 | 新特能源股份有限公司 | Wide range than flow control device and flow control valve |
| CN111609165A (en) * | 2019-02-25 | 2020-09-01 | 江门市新会区进宾科技有限公司 | Proportional flow valve |
| CN111664261A (en) * | 2019-03-08 | 2020-09-15 | 盖博肯珀金属工程有限公司 | Valve for drinking water apparatus |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6299134B1 (en) * | 1997-07-07 | 2001-10-09 | Tasowheel Oy | Valve for adjusting mass flow |
| CN2931957Y (en) * | 2006-06-23 | 2007-08-08 | 苗玉岩 | Scouring-free cut-off valve |
| CN203421182U (en) * | 2013-09-02 | 2014-02-05 | 浙江金锋自动化仪表有限公司 | Multistage depressurization adjusting valve |
| CN204226808U (en) * | 2014-11-18 | 2015-03-25 | 欧文凯利自控阀（上海）有限公司 | The two cylinder reduction regulation segmented septum valve of interior air inlet |
| CN204692592U (en) * | 2015-05-19 | 2015-10-07 | 苗蕴博 | A kind of flow control valve |
-
2015
- 2015-05-19 CN CN201510255322.5A patent/CN104930197B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6299134B1 (en) * | 1997-07-07 | 2001-10-09 | Tasowheel Oy | Valve for adjusting mass flow |
| CN2931957Y (en) * | 2006-06-23 | 2007-08-08 | 苗玉岩 | Scouring-free cut-off valve |
| CN203421182U (en) * | 2013-09-02 | 2014-02-05 | 浙江金锋自动化仪表有限公司 | Multistage depressurization adjusting valve |
| CN204226808U (en) * | 2014-11-18 | 2015-03-25 | 欧文凯利自控阀（上海）有限公司 | The two cylinder reduction regulation segmented septum valve of interior air inlet |
| CN204692592U (en) * | 2015-05-19 | 2015-10-07 | 苗蕴博 | A kind of flow control valve |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108730550A (en) * | 2017-04-17 | 2018-11-02 | 新特能源股份有限公司 | Wide range than flow control device and flow control valve |
| CN108266542A (en) * | 2018-03-22 | 2018-07-10 | 特卓（上海）工业控制阀有限公司 | Claw deflecting valve |
| CN111609165A (en) * | 2019-02-25 | 2020-09-01 | 江门市新会区进宾科技有限公司 | Proportional flow valve |
| CN111664261A (en) * | 2019-03-08 | 2020-09-15 | 盖博肯珀金属工程有限公司 | Valve for drinking water apparatus |
| CN111664261B (en) * | 2019-03-08 | 2022-05-27 | 盖博肯珀金属工程有限公司 | Valve for drinking water apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104930197B (en) | 2017-08-29 |
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Effective date of registration: 20210208 Address after: 264200 houshuangdao Industrial Park, Zhangcun Town, Huancui District, Weihai City, Shandong Province Patentee after: Shandong Bo'ao Power Equipment Co.,Ltd. Address before: Room 204, 305 Jintan beach garden, Weihai hi tech Industrial Development Zone, Shandong Province, 264200 Patentee before: Miao Yunbo |