CN107842627A - A kind of hard seal ball valve - Google Patents
A kind of hard seal ball valve Download PDFInfo
- Publication number
- CN107842627A CN107842627A CN201711108937.0A CN201711108937A CN107842627A CN 107842627 A CN107842627 A CN 107842627A CN 201711108937 A CN201711108937 A CN 201711108937A CN 107842627 A CN107842627 A CN 107842627A
- Authority
- CN
- China
- Prior art keywords
- valve
- support chamber
- valve support
- ball
- pod apertures
- 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
- 238000007789 sealing Methods 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000012423 maintenance Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000011144 upstream manufacturing 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
- F16K5/06—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 spherical 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
- 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
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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
- F16K39/00—Devices for relieving the pressure on the sealing faces
- F16K39/06—Devices for relieving the pressure on the sealing faces for taps or cocks
-
- 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
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
- F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug
Abstract
The present invention provides a kind of hard seal ball valve.Including valve body, bonnet, valve seat, valve ball, upper and lower valve rod, valve ball is provided with valve body, valve ball upper end is connected with upper valve rod, and valve ball lower end is connected with lower valve rod, and the both sides of valve body are equipped with bonnet, and valve seat is loaded in the valve support chamber on bonnet；Communicated with left valve support chamber, provided with left valve support chamber pod apertures, one end of left valve support chamber pod apertures is led in the left valve support chamber on the inside of left valve seat insert, and the other end of left valve support chamber pod apertures leads in the left valve support chamber on the outside of left valve seat insert, and left diaphragm valve is provided with left valve support chamber pod apertures；Communicated with right valve support chamber, provided with right valve support chamber pod apertures, one end of right valve support chamber pod apertures is led in the right valve support chamber on the inside of right valve seat insert, and the other end of right valve support chamber pod apertures leads in the right valve support chamber on the outside of right valve seat insert, and right diaphragm valve is provided with right valve support chamber pod apertures.
Description
Technical field
The present invention relates to a kind of valve, particularly a kind of hard seal ball valve.
Background technology
At present, ball valve is widely used in the industries such as oil, chemical industry, electric power, metallurgy, papermaking.Conventional ball valve is typically adopted
With soft seal, due to being restricted by encapsulant, its Applicable temperature scope is small, and high temperature resistant, high pressure and corrosive nature are low, use the longevity
Life is shorter, for that need to use high parameter, special operation condition condition of the high-performance ball valve as opening and closing element, such as：Ore pulp, lime-ash, dust
It etc. occasion, then can not meet, thus then use hard seal ball valve.Existing hard seal ball valve generally by valve body, bonnet, valve ball,
Valve seat and valve rod composition, drive the valve ball of its lower end to rotate during use by rotation valve rod, make through hole on valve ball and valve
Runner hole is corresponding or staggers, so as to realize being turned on and off for ball valve.Due to being influenceed by pressure medium in valve body, ball valve exists
Valve rod torque is larger during unlatching, makes ball valve be not easy to open, and active force of the valve seat with valve ball when ball valve is opened is larger, easily causes valve
Seat sealing surface and valve ball abrasion and produce leakage, reduce the functional reliability of ball valve, shorten the service life of ball valve.To the greatest extent
The hard seal ball valve that pipe also has innovation at present comes out, but its structure is more complicated, and use and maintenance is not very convenient.
The content of the invention
For in place of overcome the deficiencies in the prior art, the present invention provides a kind of rational in infrastructure, ball valve valve rod torque when opening
It is small, ball valve is easily opened, active force of the valve seat with valve ball when ball valve is opened is small, makes sealing surface of seat be not easy to grind with valve ball
Damage, reliable operation, service life length, the hard seal ball valve of easy maintenance, and high temperature resistant, high pressure, good seal performance.
The technical solution adopted for the present invention to solve the technical problems is：Including valve body, bonnet, valve seat, valve ball, upper valve rod
And lower valve rod；The valve ball with through hole is provided with valve body, the upper end of valve ball is connected with upper valve rod, lower end and the lower valve rod phase of valve ball
Even, upper and lower valve rod is placed on valve body, and the both sides of valve body be equipped with the left and right bonnet with runner hole, left and right valve seat respectively loaded on a left side,
In the valve support chamber of right bonnet, positioned at the both sides of valve ball, the outer end of valve seat is equipped with seating spring, is provided between valve seat and valve support chamber close
Seal；It is characterized in that：Communicated with left valve support chamber, provided with left valve support chamber pod apertures, a left side is led in one end of left valve support chamber pod apertures
In left valve support chamber on the inside of valve seat insert, left valve seat that the other ends of left valve support chamber pod apertures leads on the outside of left valve seat insert
Intracavitary, left diaphragm valve is provided with left valve support chamber pod apertures；Communicated with right valve support chamber, provided with right valve support chamber pod apertures, right valve seat
One end of chamber pod apertures is led in the right valve support chamber on the inside of right valve seat insert, and the other end of right valve support chamber pod apertures leads to right valve
In right valve support chamber on the outside of seat sealing ring, right diaphragm valve is provided with right valve support chamber pod apertures.
It is above-mentioned between left valve support chamber and left valve seat, corresponding to the both sides of left valve seat insert, provided with being led with left valve support chamber
The outer flow-guiding mouth of left valve support chamber Inner guide mouth that discharge orifice communicates, left valve support chamber；Between right valve support chamber and right valve seat, corresponding to right valve
The both sides of seat sealing ring, provided with the right valve support chamber Inner guide mouth communicated with right valve support chamber pod apertures, flow-guiding mouth outside right valve support chamber.
The above-mentioned inside and outside flow-guiding mouth of left and right valve support chamber is located between left and right valve support chamber and left and right valve seat, or be located at it is left,
On right valve seat, either it is located in left and right valve support chamber or is located on left and right bonnet, or be located on valve body.
The quantity of above-mentioned left and right valve support chamber pod apertures is respectively respectively for 1 or more than 1.
Above-mentioned left and right valve support chamber pod apertures are located on left and right bonnet, are either located on valve body or are located at valve body and valve
Cover.
Above-mentioned left and right valve support chamber pod apertures can be connected to the outside of ball valve by short tube.
Short tube can be provided between above-mentioned left and right valve support chamber pod apertures and left and right diaphragm valve to connect.
Above-mentioned left and right diaphragm valve is left and right each formula structure, or is valve group formula structure, and multichannel valve type structure is overall
Formula structure, upper valve rod are driven one kind in (linkage) formula structure.Above structure can be such that left and right diaphragm valve is respectively separately turned on or simultaneously
Open.
Above-mentioned left and right diaphragm valve is located at the outside of ball valve, is either located at the inside of ball valve or is located on diverse location,
Or it is located on same place position.
Its is rational in infrastructure by the present invention, and it is small to be effectively guaranteed ball valve valve rod torque when opening, and ball valve is easily opened, valve
Active force of the seat with valve ball when ball valve is opened is small, makes sealing surface of seat not easy to wear with valve ball, reliable operation, service life
It is long, using and hard seal ball valve easy to maintenance and high temperature resistant, high pressure, good seal performance.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is left valve cover structure schematic diagram in the present invention；
Fig. 3 is sectional views of Fig. 2A-A to place；
Fig. 4 is Fig. 3 right view；
Fig. 5 is the structural representation of left valve seat in the present invention；
Fig. 6 is Fig. 5 right view；
Fig. 7 is Fig. 5 left view；
Fig. 8 is the partial enlarged drawing at I in Fig. 1；
In figure：1 it is left bonnet, 2 be left seating spring, 3 be left valve seat insert, 4 be left valve support chamber pod apertures, 5 is left
Diaphragm valve, 6 be valve body, 7 be upper valve rod, 8 be right diaphragm valve, 9 be right valve support chamber pod apertures, 10 be right valve seat insert, 11 be
Right seating spring, 12 be right bonnet, 13 be left valve seat, 14 be right valve seat, 15 be the outer flow-guiding mouth of left valve support chamber, 16 be left valve seat
Chamber, 17 be left sealing surface of seat, 18 be left valve support chamber Inner guide mouth, 19 be lower valve rod, 20 be valve ball, 21 be to be led in right valve support chamber
Head piece, 22 be right sealing surface of seat, 23 be right valve support chamber, 24 be the outer flow-guiding mouth of right valve support chamber.
Specific implementation
The present invention is described in further detail below in conjunction with the accompanying drawings.
The present invention includes valve body 6, bonnet 1,12, valve seat 13,14, valve ball 20, upper valve rod 7 and lower valve 19；Set in valve body 6
There is the valve ball 20 with through hole, the upper end of valve ball 20 is connected with upper valve rod 7, and the lower end of valve ball 20 is connected with lower valve rod 19, upper and lower valve
Bar 7,19 is placed on valve body 6, and the both sides of valve body 6 are equipped with the left and right bonnet 1,12 with runner hole, and left and right valve seat 13,14 fills respectively
In in the valve support chamber 16,23 of left and right bonnet 1,12, positioned at the both sides of valve ball 20, the outer end of valve seat 13,14 equipped with seating spring 2,
11, sealing 3,10 is provided between valve seat 13,14 and valve support chamber 16,23；Communicated with left valve support chamber 16, provided with left valve support chamber pod apertures
4, one end of left valve support chamber pod apertures 4 is led in the left valve support chamber 16 of the left inner side of valve seat insert 3, left valve support chamber pod apertures 4
The other end leads in the left valve support chamber 16 in the left outside of valve seat insert 3, and left diaphragm valve 5 is provided with left valve support chamber pod apertures 4；With
Right valve support chamber 23 communicates, and provided with right valve support chamber pod apertures 9, one end of right valve support chamber pod apertures 9 is led in right valve seat insert 10
23 in the right valve support chamber of side, the other end of right valve support chamber pod apertures 9 leads to 23 in the right valve support chamber in the right outside of valve seat insert 10,
Right diaphragm valve 8 is provided with right valve support chamber pod apertures 9.It is above-mentioned between left valve support chamber 16 and left valve seat 13, corresponding to left valve seat
The both sides of sealing ring 3, provided with the left valve support chamber Inner guide mouth 18 communicated with left valve support chamber pod apertures 4, flow-guiding mouth outside left valve support chamber
15；Between right valve support chamber 23 and right valve seat 14, corresponding to the both sides of right valve seat insert 10, provided with right valve support chamber pod apertures
The outer flow-guiding mouth 24 of the 9 right valve support chamber Inner guide mouths 21 communicated, right valve support chamber.The inside and outside flow-guiding mouth 18 of above-mentioned left and right valve support chamber, 15,
21st, 24, it is located between left and right valve support chamber 16,23 and left and right valve 13,14, or is located on left and right valve seat 13,14, Huo Zheshe
In left and right valve support chamber 16,23, either it is located on left and right bonnet 1,12 or is located on valve body 6.Above-mentioned left and right valve support chamber
The quantity of pod apertures 4,9 is respectively respectively for 1 or more than 1.Above-mentioned left and right valve support chamber pod apertures 4,9 be located at left and right bonnet 1,
On 12, either it is located on valve body 6 or is located on valve body 6 and bonnet 1,12.Above-mentioned left and right valve support chamber pod apertures 4,9 can pass through
Short tube is connected to the outside of ball valve.Short tube can be provided between above-mentioned left and right valve support chamber pod apertures 4,9 and left and right diaphragm valve 5,8 to connect
Connect.Above-mentioned left and right diaphragm valve 5,8 is left and right each formula structure, or is valve group formula structure, multichannel valve type structure, monoblock type
Structure, upper valve rod 7 are driven one kind in (linkage) formula structure.Above structure can be such that left and right diaphragm valve 5,8 is respectively separately turned on or together
Shi Kaiqi.Above-mentioned left and right diaphragm valve 5,8 is located at the outside of ball valve, is either located at the inside of ball valve or is located at diverse location
On, or be located on same place position.
When opening ball valve, left and right diaphragm valve 5,8 is opened first, in the presence of left and right valve support chamber pod apertures 4,9,
Medium in left and right valve support chamber 16,23 is leaked into flowing down for ball valve by the inside and outside flow-guiding mouth 18,15,21,24 of left and right valve support chamber
In pipeline, the pressure medium in left and right valve support chamber 16,23 is less than the pressure medium in ball valve upstream line, be then rotated further by
Upper valve rod 7 drive valve ball 20 rotate 90 ° of through holes made on valve ball 20 it is corresponding with the runner hole of ball valve ball valve is opened it is (left and right
The active force in ball valve opening process is small with valve ball 20 for valve seat 13,14, makes ball valve torque of upper valve rod 7 when opening small, left and right valve
Seat sealing surface 17,22 and valve ball 20 be not easy to wear).
When closing ball valve, opposite direction rotates upper valve rod 7 and drives valve ball 20 to rotate 90 °, makes the through hole and ball on valve ball 20
The runner hole of valve, which is staggered, closes ball valve, then again closes left and right diaphragm valve 5,8, make a left side on left and right valve seat 13,14,
Right sealing surface of seat 17,22 is bonded with valve ball 20 reaches satisfactory sealing performance.
A kind of hard seal ball valve of the present invention, due in left and right valve support chamber pod apertures 4,9 and left and right valve support chamber,
In the presence of outer flow-guiding mouth 15,18,21,24, make the torque of ball valve upper valve rod 7 is small to be easy to open ball valve, left and right valve seat 13,14
It is small with active force of the valve ball 20 when ball valve is opened, make that left and right sealing surface of seat 17,22 is not easy to wear with valve ball 20, and work can
Lean on, its is rational in infrastructure, service life length, using and it is easy to maintenance.
Claims (9)
1. a kind of hard seal ball valve, including valve body, bonnet, valve seat, valve ball, upper valve rod and lower valve rod；Band through hole is provided with valve body
Valve ball, the upper end of valve ball is connected with upper valve rod, and the lower end of valve ball is connected with lower valve rod, and upper and lower valve rod is placed on valve body, valve body
Both sides the left and right bonnet with runner hole is housed, left and right valve seat is respectively in the valve support chamber loaded on left and right bonnet, positioned at valve ball
Both sides, the outer end of valve seat are equipped with seating spring, sealing ring are provided between valve seat and valve support chamber；It is characterized in that：With left valve support chamber
Communicate, provided with left valve support chamber pod apertures, one end of left valve support chamber pod apertures is led in the left valve support chamber on the inside of left valve seat insert,
The other end of left valve support chamber pod apertures leads in the left valve support chamber on the outside of left valve seat insert, is provided with left valve support chamber pod apertures
Left diaphragm valve；Communicated with right valve support chamber, provided with right valve support chamber pod apertures, right valve base sealing is led in one end of right valve support chamber pod apertures
Enclosing in the right valve support chamber of inner side, the other end of right valve support chamber pod apertures leads in the right valve support chamber on the outside of right valve seat insert,
Right valve support chamber pod apertures are provided with right diaphragm valve.
A kind of 2. hard seal ball valve according to claim 1, it is characterised in that：It is above-mentioned left valve support chamber and left valve seat it
Between, corresponding to the both sides of left valve seat insert, provided with left valve support chamber Inner guide mouth, the left valve seat communicated with left valve support chamber pod apertures
The outer flow-guiding mouth of chamber；Between right valve support chamber and right valve seat, corresponding to the both sides of right valve seat insert, provided with right valve support chamber water conservancy diversion
The outer flow-guiding mouth of right valve support chamber Inner guide mouth that hole communicates, right valve support chamber.
A kind of 3. hard seal ball valve according to claim 1 or 2, it is characterised in that：Above-mentioned left and right valve support chamber is inside and outside to be led
Head piece is located between left and right valve support chamber and left and right valve seat, is either located on left and right valve seat or is located in left and right valve support chamber,
Either it is located on left and right bonnet or is located on valve body.
A kind of 4. hard seal ball valve according to claim 1, it is characterised in that：The number of above-mentioned left and right valve support chamber pod apertures
Amount is respectively respectively for 1 or more than 1.
A kind of 5. hard seal ball valve according to claim 1, it is characterised in that：Above-mentioned left and right valve support chamber pod apertures are located at
On left and right bonnet, either it is located on valve body or is located on valve body and bonnet.
6. according to a kind of hard seal ball valve described in claim 1,4 or 5, it is characterised in that：Above-mentioned left and right valve support chamber pod apertures
The outside of ball valve can be connected to by short tube.
A kind of 7. hard seal ball valve according to claim 1, it is characterised in that：Above-mentioned left and right valve support chamber pod apertures with it is left,
Short tube can be provided between right diaphragm valve to connect.
A kind of 8. hard seal ball valve according to claim 1, it is characterised in that：Above-mentioned left and right diaphragm valve is left and right each one
Individual formula structure, or be valve group formula structure, multichannel valve type structure, monolithic construction, in upper valve rod transmission (linkage) formula structure
It is a kind of.
A kind of 9. hard seal ball valve according to claim 1 or 8, it is characterised in that：Above-mentioned left and right diaphragm valve is located at ball valve
Outside, be either located at the inside of ball valve or be located on diverse location, or be located on same place position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711108937.0A CN107842627B (en) | 2017-11-02 | 2017-11-02 | Hard seal ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711108937.0A CN107842627B (en) | 2017-11-02 | 2017-11-02 | Hard seal ball valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107842627A true CN107842627A (en) | 2018-03-27 |
| CN107842627B CN107842627B (en) | 2024-03-12 |
Family
ID=61682520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711108937.0A Active CN107842627B (en) | 2017-11-02 | 2017-11-02 | Hard seal ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107842627B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115614498A (en) * | 2022-11-10 | 2023-01-17 | 上海瑞控阀门有限公司 | Low-temperature electric control ball valve reliable in sealing |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050205826A1 (en) * | 2004-03-22 | 2005-09-22 | Scaramucci John P | Valve with pressure adaptable seat |
| CN101629640A (en) * | 2009-08-12 | 2010-01-20 | 昆山维萨阀门有限公司 | Pilot-operated type hard seal fixing ball valve |
| CN102878316A (en) * | 2012-10-23 | 2013-01-16 | 浙江超达阀门股份有限公司 | Ball valve reliable in sealing and low in opening-closing torque |
| CN103375604A (en) * | 2013-07-23 | 2013-10-30 | 浙江石化阀门有限公司 | Superhigh temperature rigidity seal ball valve |
| US20150377366A1 (en) * | 2014-06-30 | 2015-12-31 | Thomas A. Hartman | Ball Valve and Method of Operating the Same |
| CN106286880A (en) * | 2016-09-29 | 2017-01-04 | 江苏神通阀门股份有限公司 | In one, dress declines torque ball valve |
| CN208010963U (en) * | 2017-11-02 | 2018-10-26 | 朱晓丰 | A kind of hard seal ball valve |
-
2017
- 2017-11-02 CN CN201711108937.0A patent/CN107842627B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050205826A1 (en) * | 2004-03-22 | 2005-09-22 | Scaramucci John P | Valve with pressure adaptable seat |
| CN101629640A (en) * | 2009-08-12 | 2010-01-20 | 昆山维萨阀门有限公司 | Pilot-operated type hard seal fixing ball valve |
| CN102878316A (en) * | 2012-10-23 | 2013-01-16 | 浙江超达阀门股份有限公司 | Ball valve reliable in sealing and low in opening-closing torque |
| CN103375604A (en) * | 2013-07-23 | 2013-10-30 | 浙江石化阀门有限公司 | Superhigh temperature rigidity seal ball valve |
| US20150377366A1 (en) * | 2014-06-30 | 2015-12-31 | Thomas A. Hartman | Ball Valve and Method of Operating the Same |
| CN106286880A (en) * | 2016-09-29 | 2017-01-04 | 江苏神通阀门股份有限公司 | In one, dress declines torque ball valve |
| CN208010963U (en) * | 2017-11-02 | 2018-10-26 | 朱晓丰 | A kind of hard seal ball valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115614498A (en) * | 2022-11-10 | 2023-01-17 | 上海瑞控阀门有限公司 | Low-temperature electric control ball valve reliable in sealing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107842627B (en) | 2024-03-12 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20211103 Address after: 224713 No. 161, Yanhe Middle Road, Yanhe Town, Jianhu County, Jiangsu Province Applicant after: JIANHU YUXIANG MACHINERY MANUFACTURING Co.,Ltd. Address before: 224700 No. 30, Qianzhuang group, Qianzhuang neighborhood committee, Baota Town, Jianhu County, Yancheng City, Jiangsu Province Applicant before: Zhu Xiaofeng |
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