CN109695748A - A kind of duplex valving - Google Patents
A kind of duplex valving Download PDFInfo
- Publication number
- CN109695748A CN109695748A CN201810809133.1A CN201810809133A CN109695748A CN 109695748 A CN109695748 A CN 109695748A CN 201810809133 A CN201810809133 A CN 201810809133A CN 109695748 A CN109695748 A CN 109695748A
- Authority
- CN
- China
- Prior art keywords
- partial gear
- ball valve
- duplex
- cavity
- valving
- 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
Classifications
-
- 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
- F16K13/00—Other constructional types of cut-off apparatus; Arrangements for cutting-off
-
- 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
-
- 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
- F16K31/53—Mechanical actuating means with toothed gearing
- F16K31/535—Mechanical actuating means with toothed gearing for rotating valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
- Multiple-Way Valves (AREA)
Abstract
The present invention provides a kind of duplex valving, is related to valve technology field.The duplex valving includes the first ball valve, the second ball valve, Venturi tube, transmission component and driving assembly.First ball valve has the first import, first outlet and the first valve rod；Second ball valve has the second import, second outlet and the second valve rod；Venturi tube has entrance and diffuser, and entrance is connected to first outlet, diffuser and the second inlet communication；Transmission component includes the first partial gear, the second partial gear and third partial gear, first partial gear and the second partial gear are matched with third partial gear two sides, first partial gear is connect with the first valve rod, second partial gear is connect with the second valve rod, in the rotation of third partial gear, in synchronization, only engaged with one in the first partial gear and the second partial gear；Driving assembly is connect with third partial gear, and third partial gear can be driven to rotate.
Description
Technical field
The present invention relates to valve technology field, in particular to a kind of duplex valving.
Background technique
Currently, drainage generally includes blowoff line in the gas station of natural gas extraction, blowoff line is equipped with electronic
Ball valve passes through the opening degree of electrical ball valve control of sewage disposal pipeline during normal production.Since the liquid of gas gathering station processing is direct
From gas well, fracturing sand residue has erosion effect to electrical ball valve to gas well in process of production, so that electrical ball valve is frequent occurrence
Interior leakage phenomenon, makes its service life reduction, influences the normal dirt eliminating function at gas station, and needs often to replace electrical ball valve.
Summary of the invention
In view of this, the present invention provides a kind of duplex valving, it can prolong the service life, reduce cost.
The present invention is solved the above problems by following technological means:
A kind of duplex valving, comprising:
First ball valve has the first import and first outlet, and first ball valve has the first valve rod；
Second ball valve has the second import and second outlet, and second ball valve has the second valve rod；
Venturi tube has entrance and diffuser, and the entrance is connected to the first outlet, the diffuser with it is described
Second inlet communication；
Transmission component, including the first partial gear, the second partial gear and third partial gear, described first not exclusively
Gear and second partial gear are matched with third partial gear two sides, and first partial gear and institute
The connection of the first valve rod is stated, second partial gear is connect with second valve rod, is rotated in the third partial gear
When, in synchronization, only engaged with one in first partial gear and second partial gear；
Driving assembly is connect with the third partial gear, and the third partial gear can be driven to rotate.
Further, the driving component includes connecting shaft and electric operator, one end of the connecting shaft and institute
The connection of third partial gear is stated, the other end is connected with the electric operator, and the electric operator is for driving institute
State connecting shaft rotation.
Further, the duplex valving further include:
Handle, and the connection axis connection, for driving the connecting shaft to rotate.
Further, first ball valve is hard seal ball valve, and second ball valve is soft sealing ball valve.
Further, the duplex valving further includes shell, first ball valve, second ball valve and the text
Venturi is located in the shell, and the shell corresponds to first import and the position of the second outlet is equipped with out
Mouthful.
Further, the transmission component further includes cabinet, and the first cavity being sequentially communicated, second are equipped in the cabinet
Cavity and third cavity, first partial gear are set to first cavity, and second partial gear is set to described
Second cavity, the third partial gear are set in the third cavity.The inner wall of first cavity is equipped with described in restriction
First limiting section of the first partial gear slewing area, the inner wall of second cavity, which is equipped with, limits the second incomplete tooth
Take turns the second limiting section of slewing area, the inner wall of the third cavity is equipped with third limiting section, the third limiting section with it is described
The region of the not set gear teeth of third partial gear cooperates.
Duplex valving of the present invention, when in use, sewage can enter the first import of the first ball valve, and can be from
The second outlet of second ball valve flows out.In the process, dual regulation can be carried out to sewage by the first ball valve and the second ball valve,
And it can realize dual-seal.Meanwhile according to the property of Venturi tube, sewage forms one in the outside of the diffuser of Venturi tube
" vacuum " area prevents impurity from entering the second ball valve, so as to guarantee sealing performance, prolong the service life, keep away under bad working environments
Exempt from frequently to replace valve, is conducive to part bottom cost.
When in use, the rotation of third partial gear can be driven by driving assembly, drive the first partial gear and the
Two partial gear alternate rotations so as to open the second ball valve first, then open the first ball valve, and adjustable first ball valve
Aperture；When closed, the first ball valve can be first closed, the second ball valve is turned off.
Detailed description of the invention
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the schematic diagram of the duplex valving of the embodiment of the present invention.
Fig. 2 is the schematic diagram of the duplex valving Chinese venturi of the embodiment of the present invention.
Fig. 3 is the schematic diagram of the transmission component of the duplex valving of the embodiment of the present invention.
In figure: 1, the first ball valve；101, the first valve rod；102, the first valve seat；103, the first sphere；2, the second ball valve；
201, the second valve rod；202, the second valve seat；203, the second sphere；3, Venturi tube；31, entrance；32, diffuser；4, first
Partial gear；5, the second partial gear；6, third partial gear；7, cabinet；71, the first cavity；711, the first limit
Portion；72, the second cavity；721, the second limiting section；73, third cavity；731, third limiting section；8, connecting shaft；9, shell；10,
Handle；11, motor.
Specific embodiment
In the description of the present invention, it is to be understood that, term " center ", "upper", "lower", "front", "rear", " left side ",
The orientation or positional relationship of the instructions such as " right side ", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on the figure
Orientation or positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.?
In description of the invention, unless otherwise indicated, the meaning of " plurality " is two or more.
Below with reference to attached drawing, the present invention is described in detail, and the duplex valving of the embodiment of the present invention can be used for.
As shown in Figure 1-Figure 3, a kind of duplex valving of the embodiment of the present invention, including the first ball valve 1, the second ball valve 2, Venturi tube
3, transmission component and driving assembly, in which:
First ball valve 1 has the first import and first outlet, and first ball valve 1 has the first valve rod 101.
Second ball valve 2 has the second import and second outlet, and second ball valve 2 has the second valve rod 201.
Venturi tube 3 has entrance 31 and diffuser 32, and the entrance 31 is connected to the first outlet, the expansion
Dissipate section 32 and second inlet communication.
Transmission component include the first partial gear 4, the second partial gear 5 and third partial gear 6, described first
Partial gear 4 and second partial gear 5 are matched with 6 two sides of third partial gear, and described first endless
All gear 4 is connect with first valve rod 101, and second partial gear 5 is connect with second valve rod 201, described
When third partial gear 6 rotates, can alternately it be engaged with first partial gear 4 and second partial gear 5.
Driving assembly is connect with the third partial gear 6, and the third partial gear 6 can be driven to rotate.
Duplex valving of the invention can drive third partial gear 6 to rotate by driving assembly when in use,
5 alternate rotation of the first partial gear 4 and the second partial gear is driven, so as to open the second ball valve 2 first, then opens
One ball valve 1, and the aperture of adjustable first ball valve 1；When closed, the first ball valve 1 can be first closed, the second ball valve 2 is turned off.It is dirty
Water can enter the first import of the first ball valve 1, and can flow out from the second outlet of the second ball valve 2.In the process, can be passed through
One ball valve 1 and the second ball valve 2 carry out dual regulation to sewage, and can realize dual-seal.Meanwhile according to the property of Venturi tube 3
Matter, sewage form " vacuum " area in the outside of the diffuser 32 of Venturi tube 3, prevent impurity from entering the second ball valve 2, thus
It can guarantee sealing performance under bad working environments, prolong the service life, avoid frequently replacing valve, be conducive to part bottom cost.
Each section of duplex valving of the present invention is described in detail below:
First ball valve 1 may include the first valve rod 101 for adjusting aperture, further include the first valve seat 102 and the first sphere 103.
First valve seat 102 has the first import and first outlet, and the first sphere 103 is set in the first valve seat 102, and it is logical to be equipped with first
Road, and can be rotated in the first valve seat 102.First valve rod, 101 one end penetrates the first valve seat 102 and connect with the first sphere 103,
The other end is located at outside the first valve seat 102, the first sphere 103 can be made to rotate by rotating the first valve rod 101, to adjust the first ball valve
1 aperture.First ball valve 1 is hard seal ball valve.
Second ball valve 2 may include the second valve rod 201 for adjusting aperture, further include the second valve seat 202 and the second sphere
203.Second valve seat 202 has the second import and second outlet, and the second sphere 203 is set in the second valve seat 202, and is equipped with second
Channel, and can be rotated in the second valve seat 202.Second valve rod, 201 one end penetrates the second valve seat 202 and connects with the second sphere 203
It connects, the other end is located at outside the second valve seat 202, the second sphere 203 can be made to rotate by rotating the second valve rod 201, to adjust second
The aperture of ball valve 2.Second ball valve 2 is soft sealing ball valve.
Venturi tube 3 can have entrance 31 and diffuser 32, and the entrance 31 is connected to the first outlet, described
Diffuser 32 and second inlet communication, thus by the first ball valve 1 and the second ball valve 2, connection.
Transmission component may include the first partial gear 4, the second partial gear 5 and third partial gear 6, described
One partial gear 4 and second partial gear 5 are not matched with 6 two sides of third partial gear, and described first not
Complete gear 4 is connect with first valve rod 101, and second partial gear 5 is connect with second valve rod 201, in institute
When stating the rotation of third partial gear 6, it can replace with first partial gear 4 and second partial gear 5 and nibble
It closes.
As shown in figure 3, transmission component can also include cabinet 7, the first cavity being sequentially communicated is equipped in the cabinet 7
71, the second cavity 72 and third cavity 73, first partial gear 4 are set to first cavity 71, and described second is endless
All gear 5 is set to second cavity 72, and the third partial gear 6 is set in the third cavity 73.First chamber
The inner wall of body 71 is equipped with the first limiting section 711 for limiting 4 slewing area of the first partial gear, second cavity 72
Inner wall is equipped with the second limiting section 721 for limiting 5 slewing area of the second partial gear, and the inner wall of the third cavity 73 is set
There is third limiting section 731, the region of the third limiting section 731 and the not set gear teeth of the third partial gear 6 cooperates, and
Third limiting section 731 is less than the region of the not set gear teeth, when third partial gear 6 turns to its gear teeth and third limiting section
When 731 contact, then it is blocked, at this point, third partial gear 6 can only invert.First limiting section 711 and the second limiting section 721
It can be symmetrical arranged about third limiting section 731.First partial gear 4, the second partial gear 5 and third partial gear 6
For when state, the first ball valve 1 and the second ball valve 2 are in close state shown in Fig. 3.
Driving assembly may include connecting shaft 8 and electric operator, one end and the third partial gear 6 of connecting shaft 8
Connection, the other end are connected with electric operator.The electric operator may include motor for being drivingly connected axis rotation
11, controller and transmission mechanism, as long as the rotation of axis 8 can be drivingly connected.
Driving assembly can also include handle 10, can connect with connecting shaft 8, so as to the rotation of manual actuation connecting shaft 8.
Duplex valving of the invention can also include shell 9, first ball valve 1, second ball valve 2 and described
Venturi tube 3 is located in the shell 9, and the shell 9 corresponds to first import and the position of the second outlet is equal
Equipped with opening, so that sewage flows in or out.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the scope of the claims of invention.
Claims (6)
1. a kind of duplex valving characterized by comprising
First ball valve has the first import and first outlet, and first ball valve has the first valve rod；
Second ball valve has the second import and second outlet, and second ball valve has the second valve rod；
Venturi tube has entrance and diffuser, and the entrance is connected to the first outlet, the diffuser with it is described
Second inlet communication；
Transmission component, including the first partial gear, the second partial gear and third partial gear, described first not exclusively
Gear and second partial gear are matched with third partial gear two sides, and first partial gear and institute
The connection of the first valve rod is stated, second partial gear is connect with second valve rod, is rotated in the third partial gear
When, in synchronization, only engaged with one in first partial gear and second partial gear；
Driving assembly is connect with the third partial gear, and the third partial gear can be driven to rotate.
2. duplex valving according to claim 1, which is characterized in that the driving component includes connecting shaft and electricity
Dynamic executing agency, one end of the connecting shaft are connect with the third partial gear, the other end and the electric operator
It is connected, the electric operator is for driving the connecting shaft to rotate.
3. duplex valving according to claim 2, which is characterized in that the duplex valving further include:
Handle, and the connection axis connection, for driving the connecting shaft to rotate.
4. duplex valving according to claim 1, which is characterized in that first ball valve is hard seal ball valve, institute
Stating the second ball valve is soft sealing ball valve.
5. duplex valving according to claim 1, which is characterized in that the duplex valving further includes shell,
First ball valve, second ball valve and the Venturi tube are located in the shell, and the shell corresponds to described the
The position of one import and the second outlet is equipped with opening.
6. duplex valving according to claim 1, which is characterized in that the transmission component further includes cabinet, described
It is equipped with the first cavity, the second cavity and the third cavity being sequentially communicated in cabinet, first partial gear is set to described the
One cavity, second partial gear are set to second cavity, and the third partial gear is set to the third cavity
It is interior；
First limiting section of the inner wall of first cavity equipped with restriction the first partial gear slewing area, described second
The inner wall of cavity is equipped with the second limiting section for limiting the second partial gear slewing area, and the inner wall of the third cavity is set
There are third limiting section, the region cooperation of the third limiting section and the not set gear teeth of third partial gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810809133.1A CN109695748B (en) | 2018-07-23 | 2018-07-23 | Duplex valve device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810809133.1A CN109695748B (en) | 2018-07-23 | 2018-07-23 | Duplex valve device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109695748A true CN109695748A (en) | 2019-04-30 |
| CN109695748B CN109695748B (en) | 2020-06-12 |
Family
ID=66229696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810809133.1A Active CN109695748B (en) | 2018-07-23 | 2018-07-23 | Duplex valve device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109695748B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110553064A (en) * | 2019-09-12 | 2019-12-10 | 安徽信息工程学院 | Mechanical temperature control valve device |
| CN111946839A (en) * | 2020-08-13 | 2020-11-17 | 浙江力诺流体控制科技股份有限公司 | Double-linked butterfly valve for isolating high-temperature flue |
| CN114215930A (en) * | 2021-12-20 | 2022-03-22 | 海南核电有限公司 | Pipeline valve |
| CN117515174A (en) * | 2023-12-29 | 2024-02-06 | 山东金光集团有限公司 | Special airtight combination blast gate of subway |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202248067U (en) * | 2011-09-15 | 2012-05-30 | 南京理工大学 | Flexible intelligent control device for flow rate ratio for pressure-superposed frequency conversion pressurizing water supply tank and pipe network |
| CN203642969U (en) * | 2013-11-06 | 2014-06-11 | 江阴市节流装置厂有限公司 | Venturi tube |
| CN204628715U (en) * | 2015-03-10 | 2015-09-09 | 丽水科艺阀门有限公司 | Integrated type duplex fills fixing ball valve |
| CN205859203U (en) * | 2016-06-28 | 2017-01-04 | 中国石油天然气股份有限公司 | Duplex multifunctional sewage draining device |
| CN207584074U (en) * | 2017-12-04 | 2018-07-06 | 宁波埃美柯铜阀门有限公司 | Venturi ball valve |
-
2018
- 2018-07-23 CN CN201810809133.1A patent/CN109695748B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202248067U (en) * | 2011-09-15 | 2012-05-30 | 南京理工大学 | Flexible intelligent control device for flow rate ratio for pressure-superposed frequency conversion pressurizing water supply tank and pipe network |
| CN203642969U (en) * | 2013-11-06 | 2014-06-11 | 江阴市节流装置厂有限公司 | Venturi tube |
| CN204628715U (en) * | 2015-03-10 | 2015-09-09 | 丽水科艺阀门有限公司 | Integrated type duplex fills fixing ball valve |
| CN205859203U (en) * | 2016-06-28 | 2017-01-04 | 中国石油天然气股份有限公司 | Duplex multifunctional sewage draining device |
| CN207584074U (en) * | 2017-12-04 | 2018-07-06 | 宁波埃美柯铜阀门有限公司 | Venturi ball valve |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110553064A (en) * | 2019-09-12 | 2019-12-10 | 安徽信息工程学院 | Mechanical temperature control valve device |
| CN111946839A (en) * | 2020-08-13 | 2020-11-17 | 浙江力诺流体控制科技股份有限公司 | Double-linked butterfly valve for isolating high-temperature flue |
| CN111946839B (en) * | 2020-08-13 | 2023-03-10 | 浙江力诺流体控制科技股份有限公司 | Double-linkage butterfly valve for isolating high-temperature flue |
| CN114215930A (en) * | 2021-12-20 | 2022-03-22 | 海南核电有限公司 | Pipeline valve |
| CN114215930B (en) * | 2021-12-20 | 2024-06-11 | 海南核电有限公司 | Pipeline valve |
| CN117515174A (en) * | 2023-12-29 | 2024-02-06 | 山东金光集团有限公司 | Special airtight combination blast gate of subway |
| CN117515174B (en) * | 2023-12-29 | 2024-03-26 | 山东金光集团有限公司 | Special airtight combination blast gate of subway |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109695748B (en) | 2020-06-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109695748A (en) | A kind of duplex valving | |
| AU2010302872B8 (en) | Hydraulic driven jaw-type clutch impeller combination and swimming pool bottom hydraulic pushed automatic cleaner comprising same | |
| CN110107721A (en) | A kind of shut-off valve peculiar to vessel that leakproofness is strong | |
| SA110310303B1 (en) | Rotationally-Actuated Flapper Valve and Method | |
| CN100578055C (en) | Quick switching valve and quick switching suction cleaner using the same | |
| CN104110862B (en) | Water heater | |
| CN113700892A (en) | Cleanable valve with pipeline liquid filtering function | |
| CN209285252U (en) | A kind of reliable food processor of drain pipe switching | |
| CN206958299U (en) | With spacing locking Filtering ball valve | |
| CN101469783B (en) | Automatic anti-leakage valve for liquefied natural gas and valve group | |
| CN209712709U (en) | A kind of rotation driving switch for bath machine | |
| CN108317297B (en) | Energy-saving flow valve | |
| CN212986092U (en) | Spring top pin type swinging water tap for hotel cooking bench | |
| CN104110511A (en) | Intake, exhaust and drainage solenoid valve and water heater with same | |
| CN114877084A (en) | Sanitary-grade butterfly valve convenient to clean | |
| CN108061165A (en) | A kind of butterfly valve for possessing current limliting and traffic monitoring function | |
| CN108317296B (en) | Flow valve | |
| CN208417718U (en) | A kind of rotary type ball valve | |
| KR20180054299A (en) | Automatic valve apparatus | |
| CN205896266U (en) | Pneumatics that switches on fast is by switching -over valve | |
| CN112855990A (en) | Spherical self-cleaning gas cut-off valve | |
| CN206054820U (en) | A kind of multifunction valve of presses boiler | |
| CN205689773U (en) | A kind of fluorine lining butterfly valve | |
| CN106861946A (en) | A kind of top-spraying gondola of back toggle switching | |
| CN205745415U (en) | A kind of High-efficient Water tube valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211209 Address after: 710000 5th floor, plant 103, Xirui Industrial Park, No. 569, Jincheng Third Road, economic and Technological Development Zone, Xi'an, Shaanxi Province Patentee after: XI'AN ANCN SMART INSTRUMENT Inc. Address before: 710119 room 60603, unit 6, building 1, pastoral apartment in the new industrial park, high tech Zone, Xi'an, Shaanxi Province Patentee before: SHAANXI HUIFENGYUE PETROLEUM TECHNOLOGY DEVELOPMENT Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220310 Address after: 710000 No. 12, 16th floor, building 2, Xuhui ronghua International Business Project Center, Xi'an Economic and Technological Development Zone, Shaanxi Province Patentee after: SHAANXI HUIFENGYUE PETROLEUM TECHNOLOGY DEVELOPMENT Co.,Ltd. Address before: 710000 5th floor, plant 103, Xirui Industrial Park, No. 569, Jincheng Third Road, economic and Technological Development Zone, Xi'an, Shaanxi Province Patentee before: XI'AN ANCN SMART INSTRUMENT Inc. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A double valve device Effective date of registration: 20220907 Granted publication date: 20200612 Pledgee: Xi'an investment and financing Company limited by guarantee Pledgor: SHAANXI HUIFENGYUE PETROLEUM TECHNOLOGY DEVELOPMENT Co.,Ltd. Registration number: Y2022610000575 |