CN107269874A - A kind of screw drive tap web rotary valve - Google Patents
A kind of screw drive tap web rotary valve Download PDFInfo
- Publication number
- CN107269874A CN107269874A CN201710721023.5A CN201710721023A CN107269874A CN 107269874 A CN107269874 A CN 107269874A CN 201710721023 A CN201710721023 A CN 201710721023A CN 107269874 A CN107269874 A CN 107269874A
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- China
- Prior art keywords
- valve
- valve body
- valve element
- positioning
- shaft
- 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
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 230000007704 transition Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 3
- 229920002994 synthetic fiber Polymers 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 abstract description 5
- 238000004378 air conditioning Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 238000005457 optimization Methods 0.000 description 15
- 230000006872 improvement Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/02—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having conical surfaces; Packings therefor
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
- F16K31/502—Mechanical actuating means with screw-spindle or internally threaded actuating means actuating pivotable valve members
-
- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The present invention relates to a kind of screw drive tap web rotary valve, hermetically sealed fluid control can be realized, or flow direction switching, in chemical industry, oil, air-conditioning, fluid control can be realized in water system, including valve body, the valve body upper and lower ends are respectively equipped with bonnet, lower platen, intermediate plate is provided between the lower platen and the valve body lower end, valve body inner bore is provided with the valve body, the valve body inner bore is bellmouth, provided with the valve element being engaged with the valve body inner bore inside the valve body inner bore, the valve element upper and lower ends are respectively equipped with shaft, lower shaft, the upper shaft upper end is connected with the centre hole axis positioned at bonnet, center, it is the endoporus of hollow structure inside the lower shaft, internal thread is provided with the endoporus, the endoporus is connected by a screw rod with the drive mechanism outside lower platen, the endoporus is connected with the screw flight, boss is provided with the outside of the screw rod, the boss is located between the intermediate plate and the lower platen.
Description
Technical field
The present invention relates to a kind of screw drive tap web rotary valve, belong to fluid control valve door field.
Background technology
Current valve, king-sized control valve with the abrasion used, result in amount of leakage increase, Conical valve can enter
Row compensation, reduces amount of leakage, but control is complicated, and cost is high, factor that thrust is unstable etc., and uses screw drive, is solving
Lift, rotate three processes of compression and be easily achieved, it is simple in construction, and also effect is good.
The content of the invention
The present invention is in view of the deficienciess of the prior art, provide a kind of screw drive tap web rotary valve, it is possible to achieve Quan Mi
The fluid control of envelope, or flow direction switching, can realize fluid control in chemical industry, oil, air-conditioning, water system.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：A kind of screw drive tap web rotary valve, including valve body,
The valve body upper and lower ends are respectively equipped with bonnet, lower platen, and intermediate plate is provided between the lower platen and the valve body lower end,
Be provided with valve body inner bore in the valve body, the valve body inner bore be provided with inside bellmouth, the valve body inner bore with the valve body
The valve element that hole matches, the valve element upper and lower ends are respectively equipped with shaft, lower shaft, and the upper shaft upper end is with being located at upper valve
It is to be provided with internal thread in the endoporus of hollow structure, the endoporus inside the centre hole axis connection at lid center, the lower shaft, it is described
Endoporus is connected by a screw rod with the drive mechanism outside lower platen, and the endoporus is connected with the screw flight, institute
State and boss is provided with the outside of screw rod, the boss is located between the intermediate plate and the lower platen.
As the further optimization of the present invention, the bonnet, lower end or valve body upper end or valve element upper end, which are provided with, to be used to sense
The sensor of spool position.
As the further optimization of the present invention, the bonnet, or valve body are provided with the localization machine being engaged with the valve element
Structure, the detent mechanism includes positioning hole and alignment pin.
As the further optimization of the present invention, on the valve element between shaft and bonnet, shaft and centre connect under valve element
Between fishplate bar, between drive screw and middle connecting plate, bearing is respectively equipped between drive screw and lower platen.
As the further optimization of the present invention, provided with positioning chain wheel, the positioning between the valve element and the intermediate plate
Chain wheel includes positioning platen A and positioning chain wheel B corresponding with positioning platen A, and the valve element bottom is described provided with positioning chain wheel A
Middle connecting plate intersects cooperation in pairs provided with positioning chain wheel B, positioning platen A and positioning platen B.
As the further optimization of the present invention, the valve element is in yi word pattern, square, I-shaped or Y fonts, valve body
Using two-way valve, triple valve, four-way valve, five-way valve, six-way valve or distributing valve.
As the further optimization of the present invention, the drive mechanism periphery is provided with closure, and driving power supply passes through positioned at close
The terminal board of closure base portion is connected to outside, forms all-sealed structure.
As the further optimization of the present invention, the drive mechanism is magnetic coupling structure.
As the further optimization of the present invention, the spool face is provided with transition zone, and the transition zone is to inlay soft metal
Or synthetic material or spool face are provided with pit.
As the further optimization of the present invention, spring is cased with the middle of the upper shaft, the spring one end is pressed in bonnet,
On lower surface, another section is pressed on valve element upper surface, and valve element is provided with the pressure compensation opening above and below running through.
As the further optimization of the present invention, have on the valve upper cover or valve body for observing regarding for spool position
There is Warning Mark on mirror, valve element, visor is corresponding with the mark position on valve element.
The beneficial effects of the invention are as follows：The present invention is improved on traditional infrastructure, solves conventional valves because of abrasion
The problem of causing leakage rate increase, the present invention can be compensated, and reduce leakage rate, and control is simple, cost is low, and thrust is steady
It is fixed, while lifting, rotating, compressing three processes and easily realize that simple in construction, effect is good.
Brief description of the drawings
Fig. 1 is the structural representation of embodiment of the present invention one；
Fig. 2 is the structural representation of embodiment of the present invention two；
Fig. 3 is the structural representation of embodiment of the present invention three；
Fig. 4 is the structural representation of embodiment of the present invention four；
Fig. 5 is the structural representation of embodiment of the present invention five；
Fig. 6 positions the structural representation of chain wheel for the present invention；
Fig. 7 is the structural representation of valve element of the present invention；
Fig. 8 is the structural representation of valve element of the present invention；
Fig. 9 is the structural representation of valve element of the present invention；
Figure 10 is the structural representation of valve element of the present invention；
Figure 11 is the structural representation of valve element of the present invention；
Figure 12 is the structural representation of valve element of the present invention；
Figure 13 is the structural representation of embodiment of the present invention seven；
Figure 14 is the structural representation of embodiment of the present invention nine；
Figure 15 is the structural representation of embodiment of the present invention ten.
Embodiment
In order to facilitate the understanding of the purposes, features and advantages of the present invention, below in conjunction with the accompanying drawings to the present invention
Embodiment be described in detail.Many details are elaborated in the following description to fully understand this hair
It is bright.But the invention can be embodied in many other ways as described herein, those skilled in the art can be not
Similar improvement is done in the case of running counter to intension of the present invention, therefore the present invention is not limited by following public specific embodiment.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The implication that technical staff is generally understood that is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein "and/or" includes one or more
The arbitrary and all combination of related Listed Items.
Embodiment one：
Present embodiment one is related to a kind of driving of screw rod 11 tap web rotary valve, as shown in figure 1, including valve body 1, valve body 1
Upper end is provided with bonnet, 2, and lower end is provided with lower platen 3, and bonnet, 2 is bolted with valve body 1, and the inside of valve body 1 is provided with valve body
Endoporus 5, valve body inner bore 5 is bellmouth, the valve element 6 provided with a taper inside bellmouth, the valve element 6 and the endoporus 10 of valve element 6
It is engaged, provided with an intermediate plate 4 between the lower end of valve element 6 and lower platen 3, intermediate plate 4 passes through bolt with the lower platen 3
It is fixed together, the upper end of valve element 6 is provided with upper shaft 7, and lower end is provided with lower shaft 8, and the upper upper end of shaft 7 is upper with being located at
The axle of centre bore 9 connection of bonnet central, the lower inside of shaft 8 is provided with interior in the endoporus 10 of hollow structure, the endoporus 10
Screw thread, the endoporus 10 is connected by a screw rod 11 with the drive mechanism 12 outside the lower platen 3, the endoporus 10 and
The screw rod 11 is threadedly coupled, and the outside of screw rod 11 is provided with boss 13, under the boss 13 is located at the intermediate plate 4 and is described
Between pressing plate 3.
In embodiment one, when drive mechanism 12 is rotated forward, drive mechanism 12 drives screw rod 11 to rotate forward,
Screw rod 11 and the screw-internal thread fit inside 6 times shafts of valve element 8, now valve element 6 and the compacting of the inwall of valve body 1 do not turn, so, valve element 6
In the presence of screw thread, upward jack-up, valve element 6 is just departing from valve body 1, and when valve element 6 departs from valve body 1, then valve element 6 is in screw rod 11
Under drive, rotate forward, when valve element 6 turns to the position of needs, drive mechanism 12 is inverted, drive drive screw 11 also to invert, drive
The internal whorl of 6 times shafts of screw rod 11 and valve element 8 is tightened, and pulls valve element 6 to move down, and compressed with cone valve 1.If necessary in addition
One state, then only need to repeat action above.
Embodiment two：
Present embodiment two adds the sensor for accurately monitoring the position of valve element 6 on the basis of embodiment one
14, the sensor 14 can be added in the lower end of bonnet, 2 or the side wall of valve body 1 or the upper end of valve element 6.Sensor 14 can be position
Sensor, magnetic induction sensor etc..
A kind of embodiment in 2 embodiments two of accompanying drawing, the magnetic induction sensor 14 that the embodiment is used, the sensing
Device 14 includes magnetic patch 25 and the Magnetic Sensor 14 for sensing magnetic patch 25, in the present embodiment, and bonnet, 2 is provided with more than one
Blind hole, the insertion blind hole of Magnetic Sensor 14 and is connected with bonnet, 2, and magnetic patch 25 is fixed on the upper end of valve element 6, Magnetic Sensor 14 with
Magnetic patch position correspondence, after the position of valve element 6 goes to precalculated position, Magnetic Sensor 14 receives the signal of magnetic patch 25, and by signal
Send out, while drive mechanism 12 carries out next step action according to pre-set programs.
Embodiment three：
Present embodiment three is improved on the basis of embodiment one or embodiment two, in order to constrain valve element
6 position, prevents valve element 6 from preventing valve element 6 from position deviation occur during reversion locking in motion process, especially, this
Embodiment is in embodiment one or implements on the basis of two, adds a set of detent mechanism 15, the positioner is arranged on
On bonnet 2 and valve element 6, detent mechanism 15 has various embodiments, and Fig. 3 is one of embodiment, and the embodiment is using positioning
Pin 17 and positioning hole 16, wherein alignment pin 17 are connected by a compression spring with valve element 6, and positioning hole 16 is located under bonnet, 2
End, and it is corresponding with the position of alignment pin 17, and in the present embodiment, positioning hole 16 is circular arc, and the top of alignment pin 17 is and positioning hole
16 corresponding circular arcs, only when valve element 6 goes to certain position, alignment pin 17 enters after positioning hole 16, can just make valve element 6 in locking
During avoid valve element 6 from rotating, depart from predeterminated position, so as to be further improved on the reliability of positioning of valve element 6.
Embodiment four：
Present embodiment four is the improvement carried out on the basis of embodiment one, two or three, in order to reduce bonnet, 2 with
Frictional dissipation between upper shaft 7, lower shaft 8 and intermediate plate 4 and lower platen 3, present embodiment adds anti-friction mechanism, figure
4 be one of embodiment, and the embodiment is improved on the basis of embodiment one, is used in each friction
Position increases bearing 18, so as to reduce friction.
Embodiment five：
Present embodiment five is the improvement carried out on the basis of any of the above-described embodiment, the valve element 6 with it is described in
Between between plate 4 provided with positioning chain wheel 19, as shown in figure 5, the positioning chain wheel 19 include positioning platen A and with A pairs of platen of positioning
The positioning chain wheel B21 answered, the bottom of valve element 6 is provided with positioning chain wheel A20, and the middle connecting plate is provided with positioning chain wheel B21,
Positioning platen A and positioning platen B intersect cooperation in pairs.Present embodiment five improves valve element 6 by increasing positioning chain wheel 19
The positioning put, so as to improve the precision of the positioning of valve element 6.
Embodiment six：
The optimization that present embodiment six is carried out on the basis of any of the above-described embodiment, the valve element 6 can be according to reality
Border situation, is set to be in yi word pattern, square, I-shaped or Y-shaped, valve body 1 is using two-way valve, triple valve, four-way valve, five
Port valve, six-way valve or distributing valve.
Embodiment seven：
The optimization that present embodiment seven is carried out on the basis of any of the above-described embodiment, present embodiment seven is for understanding
Certainly in fields such as air-conditioning, chemical industry or oil recoveries, the problem of revealing is equipped with closure 22 in the periphery of drive mechanism 12, driving
Power supply is connected to outside by the terminal board positioned at the bottom of closure 22, forms all-sealed structure.
Embodiment eight：
The optimization that present embodiment eight is carried out on the basis of any of the above embodiment, drive mechanism 12 employs magnetic force connection
Axle device structure, to prevent leakage problem.
Embodiment nine：
The optimization that present embodiment nine is carried out on the basis of any of the above-described embodiment, transition is provided with the surface of valve element 6
Layer 23, transition zone 23 is provided with pit to inlay soft metal or synthetic material or the surface of valve element 6.
Embodiment ten：
The optimization that present embodiment ten is carried out on the basis of any of the above-described embodiment, the intermediate sleeve of shaft 7 on described
There is spring 24, described one end of spring 24 is pressed on the lower surface of bonnet, 2, and another section is pressed on the upper surface of valve element 6, is set on valve element 6
There is the pressure compensation opening 25 above and below running through.
Embodiment described above only expresses the several embodiments of the present invention, and it describes more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.Have such as on the valve body 1 on lid or valve body 1 for observing valve
There is Warning Mark on the visor of the position of core 6, valve element 6, visor is corresponding with the mark position on valve element 6.Although the embodiment
Do not illustrate in the above-described embodiments, but the embodiment main body still falls within protection scope of the present invention.
It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise,
Various modifications and improvements can be made, these belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention
It should be determined by the appended claims.
Claims (10)
1. a kind of screw drive tap web rotary valve, including valve body, the valve body upper and lower ends are respectively equipped with bonnet, lower platen,
Intermediate plate is provided between the lower platen and the valve body lower end, it is characterised in that：Valve body inner bore is provided with the valve body, it is described
Valve body inner bore is bellmouth, provided with the valve element being engaged with the valve body inner bore inside the valve body inner bore, above and below the valve element
Two ends are respectively equipped with shaft, lower shaft, and the upper shaft upper end is connected with the centre hole axis positioned at bonnet, center, it is described under
It is that internal thread is provided with the endoporus of hollow structure, the endoporus inside shaft, the endoporus is pushed by a screw rod with being located at
Drive mechanism connection outside plate, the endoporus is connected with the screw flight, and boss, the boss are provided with the outside of the screw rod
Between the intermediate plate and the lower platen.
2. a kind of screw drive tap web rotary valve according to claim 1, it is characterised in that：The bonnet, lower end or valve
Body sidewall or valve element upper end are provided with the sensor for being used for sensing spool position.
3. a kind of screw drive tap web rotary valve according to claim 1 or 2, it is characterised in that：The bonnet, or valve
Body is provided with the detent mechanism being engaged with the valve element, and the detent mechanism includes positioning hole and alignment pin.
4. according to a kind of screw drive tap web rotary valve described in any one of claim 1-3, it is characterised in that：The valve element
Between upper shaft and bonnet, under valve element between shaft and middle connecting plate, between drive screw and middle connecting plate, spiral shell is driven
Bearing is respectively equipped between bar and lower platen.
5. according to a kind of screw drive tap web rotary valve described in any one of claim 1-4, it is characterised in that：The valve element
Provided with positioning chain wheel between the intermediate plate, the positioning chain wheel includes positioning platen A and positioning corresponding with positioning platen A
Chain wheel B, the valve element bottom is provided with positioning chain wheel A, and the middle connecting plate is provided with positioning chain wheel B, positioning platen A and positioning
Platen B intersects cooperation in pairs.
6. according to a kind of screw drive tap web rotary valve described in any one of claim 1-5, it is characterised in that：The valve element
In yi word pattern, square, I-shaped or Y-shaped, valve body is two-way valve, triple valve, four-way valve, five-way valve, six-way valve or divided
With valve.
7. according to a kind of screw drive tap web rotary valve described in any one of claim 1-6, it is characterised in that：The driving
Mechanism periphery is provided with closure, and driving power supply is connected to outside by the terminal board positioned at closure bottom, forms hermetically sealed knot
Structure.
8. according to a kind of screw drive tap web rotary valve described in any one of claim 1-7, it is characterised in that：The driving
Mechanism is magnetic coupling structure.
9. according to a kind of screw drive tap web rotary valve described in any one of claim 1-8, it is characterised in that：The valve element
Surface is provided with transition zone, and the transition zone is provided with pit to inlay soft metal or synthetic material or spool face.
10. according to a kind of screw drive tap web rotary valve described in any one of claim 1-9, it is characterised in that：On described
Spring is cased with the middle of shaft, the spring one end is pressed on bonnet, lower surface, another section is pressed on valve element upper surface, on valve element
Provided with the pressure compensation opening above and below running through.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710721023.5A CN107269874B (en) | 2017-08-22 | 2017-08-22 | Screw driving cone rotary valve |
| PCT/CN2018/082135 WO2019037432A1 (en) | 2017-08-22 | 2018-04-08 | Screw-driven rotary valve with tapered core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710721023.5A CN107269874B (en) | 2017-08-22 | 2017-08-22 | Screw driving cone rotary valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107269874A true CN107269874A (en) | 2017-10-20 |
| CN107269874B CN107269874B (en) | 2023-12-01 |
Family
ID=60076400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710721023.5A Active CN107269874B (en) | 2017-08-22 | 2017-08-22 | Screw driving cone rotary valve |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107269874B (en) |
| WO (1) | WO2019037432A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799561A (en) * | 2018-08-23 | 2018-11-13 | 合肥合茂电子科技有限公司 | A kind of rotary reversing valve |
| CN108843809A (en) * | 2018-08-23 | 2018-11-20 | 合肥合茂电子科技有限公司 | A kind of high sealing rotary reversing valve |
| CN108980414A (en) * | 2018-08-23 | 2018-12-11 | 合肥合茂电子科技有限公司 | A kind of rotational positioning reversal valve |
| WO2019037432A1 (en) * | 2017-08-22 | 2019-02-28 | 贾培育 | Screw-driven rotary valve with tapered core |
| WO2019114613A1 (en) * | 2017-12-11 | 2019-06-20 | 浙江三花汽车零部件有限公司 | Electrically operated valve |
| CN114215814A (en) * | 2021-12-02 | 2022-03-22 | 珠海格力大金精密模具有限公司 | Mold changing switch and method for connecting mold changing switch and air cylinder |
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| CN207406813U (en) * | 2017-08-22 | 2018-05-25 | 贾培育 | A kind of screw drive tap web rotary valve |
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| CN203223581U (en) * | 2013-04-08 | 2013-10-02 | 步志俊 | Ceramic rotary cone valve |
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- 2018-04-08 WO PCT/CN2018/082135 patent/WO2019037432A1/en active Application Filing
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| CN2372515Y (en) * | 1999-01-12 | 2000-04-05 | 王平 | Stop cock |
| CN101144546A (en) * | 2007-09-18 | 2008-03-19 | 虞仕君 | Floating taper cock valve |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019037432A1 (en) * | 2017-08-22 | 2019-02-28 | 贾培育 | Screw-driven rotary valve with tapered core |
| WO2019114613A1 (en) * | 2017-12-11 | 2019-06-20 | 浙江三花汽车零部件有限公司 | Electrically operated valve |
| US11512785B2 (en) | 2017-12-11 | 2022-11-29 | Zhejiang Sanhua Automotive Components Co., Ltd. | Electrically operated valve |
| CN108799561A (en) * | 2018-08-23 | 2018-11-13 | 合肥合茂电子科技有限公司 | A kind of rotary reversing valve |
| CN108843809A (en) * | 2018-08-23 | 2018-11-20 | 合肥合茂电子科技有限公司 | A kind of high sealing rotary reversing valve |
| CN108980414A (en) * | 2018-08-23 | 2018-12-11 | 合肥合茂电子科技有限公司 | A kind of rotational positioning reversal valve |
| CN114215814A (en) * | 2021-12-02 | 2022-03-22 | 珠海格力大金精密模具有限公司 | Mold changing switch and method for connecting mold changing switch and air cylinder |
| CN114215814B (en) * | 2021-12-02 | 2023-12-05 | 珠海格力大金精密模具有限公司 | Die change switch and method for connecting die change switch with cylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019037432A1 (en) | 2019-02-28 |
| CN107269874B (en) | 2023-12-01 |
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