CN105782480A - Two-way ball valve - Google Patents
Two-way ball valve Download PDFInfo
- Publication number
- CN105782480A CN105782480A CN201410826476.0A CN201410826476A CN105782480A CN 105782480 A CN105782480 A CN 105782480A CN 201410826476 A CN201410826476 A CN 201410826476A CN 105782480 A CN105782480 A CN 105782480A
- Authority
- CN
- China
- Prior art keywords
- valve
- spool
- sealing ring
- valve casing
- ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Taps Or Cocks (AREA)
Abstract
The invention discloses a two-way ball valve. The two-way ball valve comprises a valve body (2) and a server (1) on the valve body (2). The valve body (2) comprises a valve shell (21), a valve core (22) and a sealing ring (24). The valve shell (21) is a plastic valve body, the valve core (22) is a plastic valve core, and the valve shell (21) and the valve core (22) are each of an integrated structure. The valve core (22) is installed inside a sealing cover (26) from an opening in the upper portion of the sealing cover (26). The sealing ring (24) is installed into a sealing ring installing hole of the sealing cover (26) from the two sides of the sealing cover (26). A valve core assembly formed by assembling the valve core (22), the sealing cover (26) and the sealing ring (24) together is installed into the valve shell (21) overall from an opening in the lower portion of the valve shell (21). According to the two-way ball valve, the valve body and the valve core are both made of plastic materials and of the integrated structure formed by adopting an injection molding process, the valve shell is sealed through ultrasonic welding, and the valve core and the valve shell are sealed through the spherical sealing ring coated with a polytetrafluoroethylene material, so that the sealing reliability is improved.
Description
Technical field
The present invention relates to valve technology field, particularly motor-driven two pass ball valves.
Background technology
Ball valve, owing to having the features such as simple in construction, volume is little, easy to operate, opening and closing is rapid, becomes one of widely used valve.It is generally used for middle pipe with small pipe diameter, is mainly used to make the flow direction cutting off, distribute and changing medium in pipeline.
At present at truck, engineering truck, in the warm air system of motor bus etc., motor drives two pass ball valve application more, current for open and close heater tank, valve closing when it heat, time it is cold, valve is opened, warm water passes through, heat in car, need also dependent on driver or passenger, regulate the air themperature in automobile bodies, relative humidity, cleannes, air velocity and direction etc., so that the air in automobile bodies is in more satisfactory state, its principle is spool to be done rotation around valve body centrage under servomechanism drives and reaches to open, close.
Refer to the structural representation that Fig. 1, Fig. 1 are a kind of typical two pass ball valves.
As described in Figure, its servomechanism 1' is made up of DC motor, circuit control part, gear reduction, by feeding back signal of telecommunication size, the spool that gear reduction in servomechanism rotarily drives in valve body rotates about the axis, realize the function of open and close, the shell of valve body 2' adopts metal material, A, B two parts be threaded connection at C and combine, and the spool of housings is also spheroid and ball handle combines.
This type of two pass ball valve adopts metal valve body, and valve shell and spool all adopt metal material, and valve shell is divided into two sections, both require over and threaded become valve shell entirety, spool is also classified into spheroid and shank two sections, it is necessary to by assemblying spool, there is following defect:
First, valve shell material adopts metal material, is divided into two sections, connects to form valve shell entirety by internal and external screw thread, and screw thread is in processing, inefficient, and meanwhile, the sealing of valve body is easily produced impact by threaded connection place.
Secondly, valve shell structure limits spool and cannot overall load, and can only load with split type segmentation, and spool parts increases, and processing cost and efficiency of assembling are impacted.
Therefore, how to reduce amount of parts, improve efficiency of assembling and sealing property, be those skilled in the art's technical issues that need to address.
Summary of the invention
It is an object of the invention to provide a kind of two pass ball valves.Valve body and the spool of this valve are plastic material, and adopt Shooting Technique to make integral structure, realized the closing of valve casing by ultrasonic bonding, the ball face sealing circle scribbling polytetrafluoroethylmaterial material is adopted for sealing between spool and valve casing, improves the reliability of sealing.
For achieving the above object, the present invention provides a kind of two pass ball valves, including valve body and servomechanism thereon, the sealing ring that described valve body includes valve casing, is positioned at the spool within described valve casing and matches with described spool, described valve casing is plastics valve body, described spool is plastic poppet, and both respectively integral structures；Described spool loads capping inside from the uncovered of capping top, and described sealing ring loads the sealing ring installing hole of capping from capping both sides；Described spool, capping, sealing ring are assembled together, and the core assembly of composition is overall loads described valve casing from the opening below described valve casing.
Described capping and valve casing are welded to connect at opening part.
The inner ring of described sealing ring is provided with the reinforcing ring supported.
The sphere of described sealing ring is provided with a circle annular protrusion.
It is curved that the opposite side of described sealing ring its sphere dorsad is provided with a ring annular groove, the outer ring of described annular groove and the end face of inner ring, seals with the contact internal walls of described valve casing respectively.
Described sealing ring is close to the sphere of described spool and is provided with resistant to elevated temperatures friction reducing coating.
Described friction reducing coating is polytetrafluorethylecoatings coatings.
The upper shell of described servomechanism and the binding site of lower house are provided with the special-shaped seal ring consistent with its peripheral shape.
Described spool includes spheroid, is positioned at the shank on described spheroid top and is positioned at the positioning cylinder bottom described spheroid；Described shank upper end is polygon, and shaft is provided with multiple tracks O-ring seal mounting groove；Plane is processed in the cavity of described spheroid and sphere intersection；It is provided with counterbore in the middle of described positioning cylinder, matches with the cylindrical boss in described capping.
It is provided with at least twice O RunddichtringO between shank lower end and the described valve casing of described spool；It is provided with at least twice O RunddichtringO between shank upper end and the housing of described servomechanism of described spool.
The present invention utilizes the injection moulding characteristic of plastic material, devise integral type valve casing and spool, it is simultaneous for valve casing and the spool of integral structure, devise new assembling mode, when assembling, first spool is loaded capping inside from the uncovered of capping top, then sealing ring is loaded from capping both sides the sealing ring installing hole of capping, then by spool, capping, sealing ring is assembled together, and the core assembly formed is overall loads valve casing from the opening below valve casing, realizes the closing of valve casing finally by ultrasonic bonding.This integral type valve casing and spool greatly reduce the quantity of union piece, reduce cost, also improve efficiency of assembling simultaneously, can effectively replace Split type metal valve casing and spool, are that the design of two pass ball valves provides a kind of new developing direction.
In a kind of preferred version, the special-shaped seal ring of elastomeric material is installed additional between servomechanism upper and lower casing, special-shaped seal ring is contained in the profiled seal ring recess of lower house, upper shell is pressed on special-shaped seal ring, and by tapping screw, upper shell and lower house locking are realized fixing, make special-shaped seal ring produce elastic deformation, thus playing sealing function in upper shell and lower house, make servomechanism part energy well water proof and dust proof, its IP grade can be obviously improved.
In another kind of preferred version, the ball face sealing circle scribbling polytetrafluoroethylmaterial material is adopted for sealing between spool and valve casing, improves the reliability of sealing.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of typical two pass ball valves；
Fig. 2 is the structural representation of a kind of detailed description of the invention of two pass ball valves provided by the present invention；
Fig. 3 is two pass ball valves structural representation after dismantling upper shell shown in Fig. 2；
Fig. 4 is the internal structure schematic diagram of two pass ball valve body portion shown in Fig. 2；
Fig. 5 is the enlarged drawing at I position in Fig. 4；
Fig. 6 is the profile of sealing ring；
Fig. 7 is the enlarged drawing at II position in Fig. 6；
Fig. 8 is the axonometric chart of sealing ring；
Fig. 9 is the sectional view of two pass ball valves shown in Fig. 2；
Figure 10 is the structural representation of spool；
Figure 11 is the structural representation of another angle bottom spool；
Figure 12 is the structural representation of potentiometer gear.
In Fig. 1:
Servomechanism 1 ＇ valve body 2 ＇
In Fig. 2 to Fig. 9:
1. servomechanism 11. lower house 12. wiring board 13. direct current generator 14. worm screw 15. first duplicate gear 16. second duplicate gear 17. potentiometer gear 18. special-shaped seal ring 19. the 3rd duplicate gear 110. upper shell 111. tapping screw
2. valve body 21. valve casing 22. spool 221. spheroid 222. shank 223. positioning cylinder 224. sealing ring mounting groove 23.O RunddichtringO 24. sealing ring 241. annular protrusion 242. annular groove 243. friction reducing coating 25. reinforcing ring 26. covers 261. cylindrical bosses
3. adapter
Detailed description of the invention
In order to make those skilled in the art be more fully understood that the present invention program, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Refer to the structural representation of a kind of detailed description of the invention that Fig. 2, Fig. 2 are two pass ball valves provided by the present invention.
In a kind of specific embodiment, two pass ball valves provided by the invention are mainly made up of servomechanism 1, valve body 2 and adapter 3 three parts, the body element material of servomechanism 1 and valve body 2 all adopts engineering plastics, the motor of servomechanism 1 passes through adapter 3 and external electrical connections, control to pass into the electric current of motor from external input signal, the spool in poppet shaft and poppet shaft is driven to rotate by motor by gear reduction, thus changing circulation area, reach regulate flow and control the purpose of break-make.
Refer to Fig. 3, Fig. 4, Fig. 5, Fig. 3 is two pass ball valves structural representation after dismantling upper shell shown in Fig. 2；Fig. 4 is the internal structure schematic diagram of two pass ball valve body portion shown in Fig. 2；Fig. 5 is the enlarged drawing at I position in Fig. 4.
Being made up of as it can be seen, valve body 2 is main parts such as valve casing 21, spool 22, O RunddichtringO 23, sealing ring 24, reinforcing ring 25, cappings 26, wherein valve casing 21 and spool 22 all adopt Shooting Technique to be made of one formula structure.
Sealing ring 24 is arranged in the circular hole that capping 26 puts in valve casing 21 part, simultaneously equipped with reinforcing ring 25 in the inner ring of sealing ring 24, sealing ring 24 is played a supportive role, sealing ring 24 has a sphere suitable with spool 22 spherical diameter by the side of spool 22, it scribbles politef (PTFE) material one layer very thin, forms friction reducing coating 243 (see Fig. 6,7,8).This material is high temperature resistant, coefficient of friction is extremely low, and the PTFE material on sealing ring 24 sphere is close on the sphere of spool 22, decreases the frictional resistance that spool 22 is suffered in rotation process.
The sealing sphere of sealing ring 24 is provided with a circle annular protrusion 241, and it is curved that the opposite side of sealing ring its sphere dorsad is provided with a ring annular groove 242, the outer ring of annular groove 242 and the end face of inner ring, seals with the contact internal walls of valve casing 21 respectively.
Sealing ring 24 and spool 22, reinforcing ring 25, capping 26, O RunddichtringO 23 are assembled together composition core assembly; entirety snaps in valve casing 21; sealing ring 24 is by valve casing 21 inner wall protection; in sealing ring 24 is produced thrust by spool 22 rotary course; sealing ring 24 will not move axially; the sealing sphere of sealing ring 24 can be fitted with the sphere of spool 22 all the time, it is thus possible to well ensure sealing effectiveness.
Two O RunddichtringOs of spool 22 shank lower end, ensure that spool 22 coordinates the sealing effectiveness at place with valve casing 21, capping 26 is with, after spool 22 1 card lifting people's valve casing 21, being combined by ultrasonic bonding and valve casing 21, both can guarantee that bonding strength, can guarantee that again sealing property.
Servomechanism 1 is made up of lower house 11, wiring board 12, direct current generator 13, worm screw the 14, first duplicate gear the 15, second duplicate gear 16, potentiometer gear 17, special-shaped seal ring 18, the 3rd duplicate gear 19, upper shell 110, tapping screw 111 etc..
Direct current generator 13 is by worm screw 14, first duplicate gear 15, second duplicate gear 16, 3rd duplicate gear 19, drive potentiometer gear 17 realize slow down and just, reversion rotates, equipped with the special-shaped seal ring 18 consistent with its peripheral shape between upper shell 110 and lower house 11, special-shaped seal ring 18 is contained in the profiled seal ring recess of lower house 11, upper shell 110 is pressed on special-shaped seal ring 18, and it is fixing by tapping screw 111, upper shell 110 and lower house 11 to be locked realization, special-shaped seal ring 18 is made to produce elastic deformation, thus playing sealing function in upper shell 11 and lower house 110.
Refer to Fig. 9, Fig. 9 is the sectional view of two pass ball valves shown in Fig. 2.
As shown in the figure, the rigging position relation of servomechanism 1 and valve body 2 is: the lower house 11 by servomechanism 1 of the spool 22 shank upper end in valve body 2, snap in potentiometer gear 17 lower end square groove in servomechanism 1, ensure that the lower house 11 of servomechanism assembly 1 is adjacent to the valve casing 21 of valve body assembly 2, then lock with the tapping screw 111 shown in Fig. 2, spool 2, two O RunddichtringOs of 2 shank upper ends, ensure that spool 22 coordinates the sealing at place with lower house 11, the spool 22 that gear reduction in servomechanism 1 is rotarily driven in valve body 2 by potentiometer gear 17 rotates about the axis, realize opening of ball valve, close function.
Refer to the structural representation that Figure 10,11,12, Figure 10 are spool；Figure 11 is the structural representation of another angle bottom spool；Figure 12 is the structural representation of potentiometer gear.
As it can be seen, the structure of spool includes spheroid 221, shank 222, bottom positioning cylinder 223 three parts.
Shank 222 upper end is pentagon shaped, is combined together with the interior pentagon hole of potentiometer gear in servomechanism.Potentiometer gear 17 rotates under motor-driven gear reduction drives, and then band movable valve plug 22 rotates.There are four road O RunddichtringO mounting grooves 224 shank 222 lower end, wherein coordinate with the lower house of servomechanism after twice mounting O-shaped sealing ring, ensure that spool shank 222 coordinates the sealing at place with lower house 11, additionally coordinate with valve shell after twice mounting O-shaped sealing ring, it is ensured that spool shank 222 coordinates the sealing at place with valve casing 21.So, all adopt double; two O RunddichtringO to seal between spool 22 and lower house 11, spool 22 and valve casing 21, improve the reliability of sealing.
It is cavity in the middle of spool spheroid 221, is that medium flows through passage.When cavity and 21 liang of side ducts of valve casing are located along the same line, medium can flow to the pipeline of valve casing opposite side from the pipeline of valve casing 21 side by spool cavity, it is achieved ball valve open-minded.
Under in servomechanism, potentiometer gear 17 is rotated, spool 22 starts to rotate around valve core axis from ball valve fully open position, and spool hemispherical cavity and valve casing two side ducts stagger an angle gradually, until spool cavity is vertical with two side ducts lines on valve casing.In this process, spool cavity is gradually reduced with the area that docks of valve casing two side ducts, until docking area is zero, namely spheroid 221 is by valve casing 21 both sides pipe plugging, it is achieved the closedown of ball valve.In the rotary course of spool 22, it is fixed on two sealing rings 24 being simultaneously close to spool spheroid in capping 26, it is ensured that the sealing at spool spheroid place.
Additionally, plane is processed in spheroid 221 cavity and sphere intersection, it is prevented that have acute angle, effectively prevent the wedge angle scratch to sealing ring 24 on spheroid in spool 22 rotary course.
Is provided with counterbore in the middle of spool bottom positioning cylinder 223, is combined together with the cylindrical boss 261 in capping 26, it is prevented that rocking occurs in spool 22 rotary course, and spool 22 is assemblied in the position in valve casing 21 carries out spacing.
Foregoing is only a preferred embodiment of the present invention, is specifically not limited thereto, and can make pointed adjustment on this basis according to actual needs, thus obtaining different embodiments.Such as, spool and valve casing inner seal ring radially fixed, adopting capping and valve casing to be respectively arranged with semicircle, to close up realization fixing；Or, capping and the centre that is connected by between valve casing add abnormity circle, structure of screw lock etc..Owing to mode in the cards is more, just no longer illustrate one by one here.
Above two pass ball valves provided by the present invention are described in detail.Principles of the invention and embodiment are set forth by specific case used herein, and the explanation of above example is only intended to help to understand the core concept of the present invention.It should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention, it is also possible to the present invention carries out some improvement and modification, these improve and modify in the protection domain also falling into the claims in the present invention.
Claims (10)
1. a pass ball valve, including valve body (2) and servomechanism thereon (1), described valve body (2) includes valve casing (21), the internal spool (22) that is positioned at described valve casing (21) and the sealing ring (24) matched with described spool (22), it is characterized in that, described valve casing (21) is plastics valve body, described spool (22) is plastic poppet, and both respectively integral structures；Described spool (22) loads capping (26) inside from the uncovered of capping (26) top, and described sealing ring (24) loads the sealing ring installing hole of capping (26) from capping (26) both sides；The be assembled together overall opening from described valve casing (21) lower section of core assembly of composition of described spool (22), capping (26), sealing ring (24) loads described valve casing (21).
2. two pass ball valves according to claim 1, it is characterised in that described capping (26) is welded to connect at the opening part of described valve casing (21) lower section with valve casing (21).
3. two pass ball valves according to claim 1, it is characterised in that be provided with the reinforcing ring (25) supported in the inner ring of described sealing ring (24).
4. two pass ball valves according to claim 3, it is characterised in that the sealing sphere of described sealing ring (24) is provided with a circle annular protrusion (241).
5. two pass ball valves according to claim 4, it is characterized in that, the opposite side of described sealing ring (24) its sphere dorsad is provided with a ring annular groove (242), the outer ring of described annular groove (242) and the end face of inner ring are curved, seal with the contact internal walls of described valve casing (21) respectively.
6. two pass ball valves according to claim 5, it is characterised in that described sealing ring (24) is close to the sphere of described spool (21) and is provided with resistant to elevated temperatures friction reducing coating (243).
7. two pass ball valves according to claim 6, it is characterised in that described friction reducing coating (243) is polytetrafluorethylecoatings coatings.
8. two pass ball valves according to any one of claim 1 to 7, it is characterized in that, the upper shell (110) of described servomechanism (1) and the binding site of lower house (11) are provided with the special-shaped seal ring (18) consistent with its peripheral shape.
9. two pass ball valves according to claim 8, it is characterized in that, described spool (22) includes spheroid (221), is positioned at the shank (222) on described spheroid top and is positioned at the positioning cylinder (223) bottom described spheroid；Described shank (222) upper end is polygon, and shaft is provided with multiple tracks O-ring seal mounting groove (224)；Plane is processed in the cavity of described spheroid (221) and sphere intersection；It is provided with counterbore in the middle of described positioning cylinder (223), matches with the cylindrical boss (261) in described capping (26).
10. two pass ball valves according to claim 9, it is characterised in that be provided with at least twice O RunddichtringO (23) between shank lower end and the described valve casing (21) of described spool (22)；It is provided with at least twice O RunddichtringO (23) between shank upper end and the housing of described servomechanism (1) of described spool (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410826476.0A CN105782480A (en) | 2014-12-25 | 2014-12-25 | Two-way ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410826476.0A CN105782480A (en) | 2014-12-25 | 2014-12-25 | Two-way ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105782480A true CN105782480A (en) | 2016-07-20 |
Family
ID=56389342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410826476.0A Pending CN105782480A (en) | 2014-12-25 | 2014-12-25 | Two-way ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105782480A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013699A (en) * | 2017-06-05 | 2017-08-04 | 浙江声波管阀实业有限公司 | Plastic-steel gas valve |
| CN108708991A (en) * | 2018-05-21 | 2018-10-26 | 曲阜天博汽车零部件制造有限公司 | A kind of new-energy automobile threeway electronics water valve |
| CN109538821A (en) * | 2018-12-28 | 2019-03-29 | 宁波中迪机械有限公司 | Micro ball valve |
| CN109538818A (en) * | 2019-01-08 | 2019-03-29 | 浙江银轮机械股份有限公司 | A kind of double sealing structure of electronic valve |
| CN109595349A (en) * | 2019-01-08 | 2019-04-09 | 浙江银轮机械股份有限公司 | A kind of sealing structure of electronic valve |
| CN109882607A (en) * | 2019-05-07 | 2019-06-14 | 威晟汽车科技(宁波)有限公司 | A kind of motor regulating valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2723783Y (en) * | 2004-07-23 | 2005-09-07 | 连云港远洋流体装卸设备有限公司 | Emergency release valve of low temperature fluid loading and unloading arm |
| CN102011877A (en) * | 2010-12-10 | 2011-04-13 | 陈沛 | Novel down-mounting ball valve |
| US20120080631A1 (en) * | 2009-06-23 | 2012-04-05 | Guangdong Liansu Technology Industrial Co., Ltd. | Bottom entry plastic ball valve |
| CN203286038U (en) * | 2013-06-05 | 2013-11-13 | 环球阀门集团有限公司 | Fireproof fixed ball valve |
| CN203500549U (en) * | 2013-10-22 | 2014-03-26 | 方正阀门集团有限公司 | Rubber sealing ball valve |
-
2014
- 2014-12-25 CN CN201410826476.0A patent/CN105782480A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2723783Y (en) * | 2004-07-23 | 2005-09-07 | 连云港远洋流体装卸设备有限公司 | Emergency release valve of low temperature fluid loading and unloading arm |
| US20120080631A1 (en) * | 2009-06-23 | 2012-04-05 | Guangdong Liansu Technology Industrial Co., Ltd. | Bottom entry plastic ball valve |
| CN102011877A (en) * | 2010-12-10 | 2011-04-13 | 陈沛 | Novel down-mounting ball valve |
| CN203286038U (en) * | 2013-06-05 | 2013-11-13 | 环球阀门集团有限公司 | Fireproof fixed ball valve |
| CN203500549U (en) * | 2013-10-22 | 2014-03-26 | 方正阀门集团有限公司 | Rubber sealing ball valve |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013699A (en) * | 2017-06-05 | 2017-08-04 | 浙江声波管阀实业有限公司 | Plastic-steel gas valve |
| CN107013699B (en) * | 2017-06-05 | 2024-04-09 | 浙江声波管阀实业有限公司 | Plastic-steel gas valve |
| CN108708991A (en) * | 2018-05-21 | 2018-10-26 | 曲阜天博汽车零部件制造有限公司 | A kind of new-energy automobile threeway electronics water valve |
| CN109538821A (en) * | 2018-12-28 | 2019-03-29 | 宁波中迪机械有限公司 | Micro ball valve |
| CN109538818A (en) * | 2019-01-08 | 2019-03-29 | 浙江银轮机械股份有限公司 | A kind of double sealing structure of electronic valve |
| CN109595349A (en) * | 2019-01-08 | 2019-04-09 | 浙江银轮机械股份有限公司 | A kind of sealing structure of electronic valve |
| CN109882607A (en) * | 2019-05-07 | 2019-06-14 | 威晟汽车科技(宁波)有限公司 | A kind of motor regulating valve |
| CN109882607B (en) * | 2019-05-07 | 2019-08-13 | 威晟汽车科技(宁波)有限公司 | A kind of motor regulating valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105782480A (en) | Two-way ball valve | |
| KR20230058143A (en) | Stop valve and air conditioning system having the same | |
| KR101865567B1 (en) | Butterfly valve assembly with a watertight structure to the rotate shaft | |
| CN103225701A (en) | Contact pressure adjusting valve | |
| CN201836432U (en) | Linear regulating valve | |
| CN207961549U (en) | A kind of Wear-resistant corrosion-resistant butterfly valve | |
| CN206496041U (en) | A kind of multidirectional control valve | |
| KR200481250Y1 (en) | Watertight damper for air conditioning duct | |
| CN206563098U (en) | The small electrical ball valve of valve opening resistance | |
| CN206159541U (en) | Reflex -type electric T -shaped valve | |
| CN111878592A (en) | Buried butterfly valve | |
| CN104006199A (en) | Air volume regulating valve for automobile coating plant | |
| CN220102096U (en) | Two-way sealing butterfly valve | |
| CN215172450U (en) | Switching valve with air guide function | |
| CN204083434U (en) | Electric valve | |
| CN213598589U (en) | Butterfly valve with sealing structure | |
| CN103867773B (en) | Motor-operated control valve | |
| CN210661393U (en) | Butterfly valve with quick blockage cleaning function | |
| CN217463416U (en) | Valve booster with integrative casing of moulding plastics | |
| CN207093809U (en) | A kind of soft seal screw thread gate valve | |
| CN105402424A (en) | Large-flux wafer type high-performance butterfly valve | |
| CN215214880U (en) | Special thin electric three-way ball valve for blast furnace | |
| CN214367974U (en) | Plastic valve with high leakproofness | |
| CN220227344U (en) | Digital valve with strong environmental adaptability | |
| CN205401754U (en) | Two -way hard sealed butterfly valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160720 |