CN101629633A - Manual and automatic integrated passenger train water-feeding valve - Google Patents
Manual and automatic integrated passenger train water-feeding valve Download PDFInfo
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- CN101629633A CN101629633A CN200910148305A CN200910148305A CN101629633A CN 101629633 A CN101629633 A CN 101629633A CN 200910148305 A CN200910148305 A CN 200910148305A CN 200910148305 A CN200910148305 A CN 200910148305A CN 101629633 A CN101629633 A CN 101629633A
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Abstract
The invention relates to a manual and automatic integrated passenger train water-feeding valve, comprising a valve body, a valve cover, a water inlet and a water outlet. The valve cover is installed on the valve body and covers the valve body in a sealing mode, the water inlet is arranged at the bottom of the valve body, and the water outlet is arranged at the sidewall of the valve body. The water-feeding valve further comprises a water intake valve head, a water return opening, a water return valve head, a valve rod, a limit steel ball and a tension opening spring, wherein the water intake valve head is arranged in the valve body and located at the upper part of the water inlet, and the water return opening is arranged at any side of the valve cover; and the valve rod is arranged in the valve body and is a whole rod. The water-feeding valve has the advantages of high strength, good performance, attractive appearance, light weight, high level, simple operation, non-leakage while feeding water, synchronous water-feeding operation for two carriages, largely simplified water-feeding operation, and shorter water-feeding time.
Description
Technical field:
The present invention relates to a kind of passenger train water-feeding valve, relate in particular to a kind of manual and automatic integrated passenger train water-feeding valve.
Background technique:
Wetting system is not from the backwater function on present most of passenger vehicle, and the remaining water in the water inlet can freeze to cause to be water on the passing passenger vehicle so in the winter time.The station in many areas causes the water source significant wastage for preventing that winter, water inlet freezed to carry out the normally open valve running water.Because the filling pipe end size disunity of every kind of passenger vehicle, with being difficult to be connected with the filling pipe end of passenger vehicle during water on the existing common sebific duct, often The water splash in all directions and difficultly, it is more difficult particularly to go up glue pipe adfreezing in the winter time.Water mustn't leak in spill-over on the regulation, and freezed in winter directly jeopardizes traffic safety because leaked water flow to the rail railway roadbed.But because the defective that the function of last wetting system own falls behind, watertight when upward the water personnel can't guarantee water, therefore the symbolic water of going up appear, cause often anhydrous on the passenger vehicle, the toilet can't wash, the passenger is anhydrous drinks, particularly the coach problem is even more serious.Passenger vehicle is all shortening, is wanting to be difficult to reach whose requirement for passenger vehicle filling up water, existing old equipment greatly owing to complicated operation labor intensity in the limited time all in significantly speed-raising in the dead time at each station now.Existing old equipment all is that its scale that grows of ironcasting is harmful, does not meet the requirement to potable water equipment of the Ministry of Construction and the Ministry of Public Health.
Summary of the invention:
The object of the present invention is to provide a kind of intensity height, performance is good, outward appearance is beautiful, in light weight, standard is high, easy and simple to handle, do not have when going up water to leak and overflow, can be manually, automatically switch and go up water synchronously for simultaneously two joints or more piece passenger vehicle railway carriage, simplify greatly and go up water work procedure, the whole upward manual and automatic integrated passenger train water-feeding valve of water time of shortening.
Purpose of the present invention is implemented by the following technical programs: a kind of manual and automatic integrated passenger train water-feeding valve, include valve body, valve gap, water intake and water outlet, described valve bonnet seal is fastened on described valve body top, described water intake is located at described valve body bottom, be provided with described water outlet on described body wall, it also includes valve rod, water inlet valve head, backwater valve head, backwater mouth, spacing steel ball, tensioning aperture spring and electric driving mechanism; Described valve rod places in the described valve body, described valve rod is a whole bar, in the upper valve body of described valve body, be provided with the threaded stem pilot hole, the upper end of described valve rod is assemblied in the described threaded stem pilot hole, play the helical pitch effect of open and close water inlet valve head, be provided with seal ring between described threaded stem pilot hole bottom and the described valve rod; Described water inlet valve head places the following valve inner of described valve body and is positioned at described water intake top; Described back-water valve (BWV) headgear is contained in the backwater valve head limit dais bottom of described valve rod; Described backwater mouth places described upper valve body either side; The circular arc bottom that has the described valve rod of valve head annular steel ball restraining groove places the inlet valve head main body inside grooves of described water inlet valve head, is provided with inlet valve head main body annular sidewall groove on described inlet valve head main body recess sidewall; In described inlet valve head main body annular sidewall groove and described valve head annular steel ball restraining groove, be provided with described spacing steel ball, described valve rod and described water inlet valve head are realized flexibly connecting, avoid described water inlet valve head and described valve body hard friction, improve the working life of water supply valve; Described valve rod is provided with described tensioning aperture spring, and described tensioning aperture both ends of the spring is connected with described water inlet valve head, described backwater valve head respectively.
In described electric driving mechanism placed described upper valve body, described electric driving mechanism included clutch, reducing motor, driving gear, driven gear and described threaded stem pilot hole; The live axle of described reducing motor is coaxial with described driving gear; Be sleeved on the described valve rod with the described driven gear of described driving gear engagement; Described driving gear and described clutch are by the clutch engaging tooth engagement of described driving gear top and described clutch bottom; The square top of described valve rod places in the square trepanning of the described clutch that matches; On described clutch sidewall, on described clutch sidewall, be provided with annular electronic switching restraining groove and annular manual switchover restraining groove; Electric and manual manipulation on the described upper valve body sidewall switches snubber and switches restraining groove and the corresponding clamping of described annular manual switchover restraining groove with described annular electric and manual manipulation.
Described valve body comprises upper valve body and following valve body, and described upper valve body is sealingly fastened on described valve body top down, and described valve bonnet seal is fastened on described upper valve body top.
Described upper valve body sidewall is provided with described backwater mouth and described electric and manual manipulation switches snubber, is provided with clutch, reducing motor, driving gear, driven gear and described threaded stem pilot hole in the described upper valve body; The square top of described clutch places described valve gap outside, described clutch is connected with described valve gap movable sealing, be provided with the square trepanning of described clutch that the square top with described valve rod matches in the bottom of described clutch, the square trepanning of described clutch is corresponding with described threaded stem pilot hole, is provided with described clutch on-off engaging tooth in the bottom of described clutch; Described driving gear fixing on the described reducing motor live axle meshes with the described driven gear that is sleeved on the described valve rod; Described driven gear top is provided with driven gear clutch engaging tooth, described clutch on-off engaging tooth and the engagement of described driven gear clutch engaging tooth.
Described valve rod is a whole bar, and the upper end is square top, and described valve rod is provided with and the into a single integrated structure described backwater valve head limit dais of described valve rod, is provided with described valve head annular steel ball restraining groove on the above top, circular arc bottom of described valve rod.
Described water inlet valve head includes described inlet valve head main body, valve head pressing plate and water inlet valve pad, described valve head pressing plate is circular arc and is fixed on described inlet valve head main body bottom, between described inlet valve head main body and described valve head pressing plate, be provided with described water inlet valve pad, the sealing of described water intake when guaranteeing to close described water inlet valve head; Described inlet valve head main body top is provided with described inlet valve head main body groove, on described inlet valve head main body recess sidewall, be provided with described inlet valve head main body annular sidewall groove, in described inlet valve head main body annular sidewall groove, be provided with described spacing steel ball, with the corresponding described inlet valve head main body cell wall of described spacing steel ball on be provided with through hole, be used to assemble described spacing steel ball, make to flexibly connect between described valve rod and the described water inlet valve head, prolong the working life of water supply valve.
Described backwater valve head includes back-water valve (BWV) head main body, backwater valve pad, described back-water valve (BWV) head main body top is provided with described backwater valve pad, described backwater valve pad can guarantee when described water inlet valve head is opened, the sealing of described backwater mouth and described water intake is leaked water from described backwater mouth when being unlikely to make described water inlet valve head to be opened.
Described water outlet is one or more.
Described water outlet is two, and two described water outlets place described body wall the same side or place described body wall either side respectively.
Advantage: employ new technology on the structure, new process, new equipment, on material, adopt nontoxic, rustless, no burn into odorlessness, safety durable, meet the ABS engineering plastics of the Ministry of Public Health fully to Drinking Water equipment related request.Can control a plurality of water outlets by a valve rod, go up water synchronously for simultaneously more piece passenger vehicle railway carriage, easy and simple to handle, simplify greatly and go up water work procedure, whole upward water time of shortening.Be provided with back-water valve (BWV), when last water finishes when closing valve, the surplus water in the water inlet with fast automatic backwater to well, effectively avoid freeze because of water pipe on the northern area can not be in time on the phenomenon of water.
Description of drawings:
Fig. 1 is embodiment's 1 overall structure sectional drawing.
Fig. 2 is embodiment 1 a upper valve body overall structure sectional drawing.
Fig. 3 is embodiment 1 an electric driving mechanism schematic representation.
Fig. 4 is the plan view of clutch.
Fig. 5 is the worm's eye view of clutch.
Fig. 6 is the overall structure schematic representation of valve rod.
Fig. 7 is the plan view of driven gear.
Fig. 8 is the plan view of driven gear.
Fig. 9 is the overall structure schematic representation of water inlet valve head.
Figure 10 is the overall structure schematic representation of backwater valve head.
Figure 11 is another kind of water supply valve plan view.
Embodiment:
Embodiment 1: as shown in Figure 1, a kind of manual and automatic integrated passenger train water-feeding valve, include valve body 1, valve gap 2, water intake 3 and water outlet 4, valve gap 2 is sealingly fastened on valve body 1 top, water intake 3 is located at valve body 1 bottom, be provided with water outlet 4 on valve body 1 sidewall, it also includes valve rod 5, water inlet valve head 6, backwater valve head 7, backwater mouth 8, spacing steel ball 9, tensioning aperture spring 10 and electric driving mechanism 38; Valve rod 5 places in the valve body 1, valve rod 5 is a whole bar, in the upper valve body 11 of valve body 1, be provided with threaded stem pilot hole 12, the upper end of valve rod 5 is assemblied in threaded stem pilot hole interior 12, play the helical pitch effect of open and close water inlet valve head 6, be provided with seal ring 37 between threaded stem pilot hole 12 bottoms and the valve rod 5; Water inlet valve head 6 places following valve body 13 inside of valve body 1 and is positioned at water intake 3 tops; Backwater valve head 7 is sleeved on backwater valve head limit dais 14 bottoms of valve rod 5; Backwater mouth 4 places upper valve body 11 either sides; The circular arc bottom 16 that has the valve rod 5 of valve head annular steel ball restraining groove 15 places into inlet valve head main body groove 17 inside of water valve head 6, is provided with inlet valve head main body annular sidewall groove 18 on inlet valve head main body groove 17 sidewalls; Be provided with spacing steel ball 9 in the annular steel ball restraining groove 15 of inlet valve head main body annular sidewall groove 18 and valve head, valve rod 5 is realized flexibly connecting with water inlet valve head 6, avoids into water valve head 6 and valve body 1 hard friction, the working life of raising water supply valve; Valve rod 5 is provided with tensioning aperture spring 10, and tensioning aperture spring 10 two ends are connected with water inlet valve head 6, backwater valve head 7 respectively;
As Fig. 3, Fig. 4, shown in Figure 5, electric driving mechanism 38 includes clutch 19, reducing motor 20, driving gear 21, driven gear 22; The square top 28 of clutch places valve gap 2 outsides, clutch 19 is connected with valve gap 2 movable sealings, on clutch 19 sidewalls, annular manual switchover restraining groove 39 places annular electronic switching restraining groove 26 bottoms, be provided with the square trepanning 25 of clutch that matches with the square top 24 of valve rod in the bottom of clutch 19, the square trepanning 25 of clutch is corresponding with threaded stem pilot hole 12, is provided with clutch on-off engaging tooth 29 in the bottom of clutch 19; The driving gear 21 and driven gear 22 engagements that are sleeved on valve rod 5 on coaxial with reducing motor 20; As Fig. 7, shown in Figure 8, driven gear 22 tops are provided with driven gear clutch engaging tooth 30, clutch on-off engaging tooth 29 and 30 engagements of driven gear clutch engaging tooth.
As shown in Figure 6, valve rod 5 is a whole bar, and the upper end is square top, and valve rod 5 is provided with valve rod 5 into a single integrated structure backwater valve head limit daiss 14 and is provided with valve head annular steel ball restraining groove 15 on 16 tops, valve rod circular arc bottom.
As shown in Figure 9, water inlet valve head 6 includes inlet valve head main body 31, valve head pressing plate 32 and water inlet valve pad 33, valve head pressing plate 32 is circular arc and is fixed on inlet valve head main body 31 bottoms, between inlet valve head main body 31 and valve head pressing plate 32, be provided with into water valve pad 33, the sealing of water intake 3 when guaranteeing to close water valve head 6 into; Inlet valve head main body 31 tops are provided with inlet valve head main body groove 17, on inlet valve head main body groove 17 sidewalls, be provided with inlet valve head main body annular sidewall groove 18, in inlet valve head main body annular sidewall groove 18, be provided with spacing steel ball 9, with spacing steel ball 9 corresponding inlet valve head main body 31 cell walls on be provided with through hole 34, be used to assemble spacing steel ball 9, make to flexibly connect between valve rod 8 and the water inlet valve head 5, prolong the working life of water supply valve.
As shown in figure 10, backwater valve head 7 includes back-water valve (BWV) head main body 35, backwater valve pad 36, back-water valve (BWV) head main body 35 tops are provided with backwater valve pad 36, backwater valve pad 36 can guarantee when water inlet valve head 6 is opened, the sealing of backwater mouth 8 and water intake 3 is unlikely to make when into water valve head 6 is opened and leakes water from backwater mouth 8.
Be provided with seal ring 37 between threaded stem pilot hole 12 bottoms and the valve rod 5.
Embodiment 2: as shown in figure 11, as embodiment's 1 described a kind of auto-manual manual and automatic integrated passenger train water-feeding valve, water outlet 4 is two, and two water outlets 4 place valve body 1 sidewall either side respectively.
Working principle: water inlet valve head 6 in valve body 1 and backwater valve head 7 are implemented interlock by the rotation of valve rod 5.Water inlet valve head 6 is opened and is implemented to go up water when being rotated counterclockwise valve rod 5, the backwater valve head 7 that links is closed backwater mouth 8 simultaneously.Water inlet valve head 6 is closed water intake 3 when dextrorotation rotating valve rod 5, the backwater valve head 7 that links opens, realizes that with backwater mouth 8 the remaining water in the water inlet is back in the well automatically, avoids water inlet to freeze in the winter time simultaneously.
When working automatically: the electric and manual manipulation on upper valve body 11 sidewalls switches snubber 27 and is connected in the annular electronic switching restraining groove 26, make clutch on-off engaging tooth 29 and 30 engagements of driven gear clutch engaging tooth, reducing motor 20 in upper valve body 11, driving driving gear 21 rotates, driving gear 21 drives driven gear 22 and rotates, driven gear 22 drives clutch 19 by intermeshing driven gear clutch engaging tooth 30 and clutch on-off engaging tooth 29 and rotates, and clutch 19 drives the square top 24 of valve rod and places the valve rod 5 in the square trepanning 25 of clutch to rotate.
During manual work: the electric and manual manipulation on upper valve body 11 sidewalls switches snubber 27 and is connected in the annular manual switchover restraining groove 39, clutch on-off engaging tooth 29 is separated with driven gear clutch engaging tooth 30, rotate the square top 24 of 28 drive valve rods, the square top of clutch and place the valve rods 5 in the square trepanning 25 of clutch to rotate.
Claims (9)
1, a kind of manual and automatic integrated passenger train water-feeding valve, include valve body, valve gap, water intake and water outlet, described valve bonnet seal is fastened on described valve body top, described water intake is located at described valve body bottom, on described body wall, be provided with described water outlet, it is characterized in that it also includes valve rod, water inlet valve head, backwater valve head, backwater mouth, spacing steel ball, tensioning aperture spring and electric driving mechanism; Described valve rod places in the described valve body, described valve rod is a whole bar, be provided with the threaded stem pilot hole in the upper valve body of described valve body, the upper end of described valve rod is assemblied in the described threaded stem pilot hole, is provided with seal ring between described threaded stem pilot hole bottom and the described valve rod; Described water inlet valve head places the following valve inner of described valve body and is positioned at described water intake top; Described back-water valve (BWV) headgear is contained in the backwater valve head limit dais bottom of described valve rod; Described backwater mouth places described upper valve body either side; The circular arc bottom that has the described valve rod of valve head annular steel ball restraining groove places the inlet valve head main body inside grooves of described water inlet valve head, is provided with inlet valve head main body annular sidewall groove on described inlet valve head main body recess sidewall; Be provided with described spacing steel ball in described inlet valve head main body annular sidewall groove and described valve head annular steel ball restraining groove, described valve rod and described water inlet valve head are realized flexibly connecting; Described valve rod is provided with described tensioning aperture spring, and described tensioning aperture both ends of the spring is connected with described water inlet valve head, described backwater valve head respectively;
Described electric driving mechanism places in the described upper valve body, and described electric driving mechanism includes clutch, reducing motor, driving gear, driven gear; The live axle of described reducing motor is coaxial with described driving gear; Be sleeved on the described valve rod with the described driven gear of described driving gear engagement; Described driven gear and described clutch are by the clutch engaging tooth engagement of described driven gear top and described clutch bottom; The square top of described valve rod places in the square trepanning of the described clutch that matches; On described clutch sidewall, be provided with annular electronic switching restraining groove and annular manual switchover restraining groove; Electric and manual manipulation on the described upper valve body sidewall switches snubber and electronic switching restraining groove of described annular and the corresponding clamping of described annular manual switchover restraining groove.
2, manual and automatic integrated passenger train water-feeding valve according to claim 1 is characterized in that: described valve body comprises upper valve body and following valve body, and described upper valve body is sealingly fastened on described valve body top down, and described valve bonnet seal is fastened on described upper valve body top.
3, manual and automatic integrated passenger train water-feeding valve according to claim 2, it is characterized in that: described upper valve body sidewall is provided with described backwater mouth and described electric and manual manipulation switches spacing hole, be equipped with described electric and manual manipulation in the described electric and manual manipulation switching spacing hole and switch snubber, be provided with described threaded stem pilot hole in the described upper valve body.
4, manual and automatic integrated passenger train water-feeding valve according to claim 1 is characterized in that: described electric driving mechanism includes described clutch, described reducing motor, described driving gear, described driven gear; The square top of described clutch places described valve gap outside, described clutch is connected with described valve gap movable sealing, on described clutch sidewall, described annular manual switchover restraining groove places the electronic switching restraining groove of described annular bottom, be provided with the square trepanning of described clutch that the square top with described valve rod matches in the bottom of described clutch, the square trepanning of described clutch is corresponding with described threaded stem pilot hole, is provided with described clutch on-off engaging tooth in the bottom of described clutch; The described driving gear and the described driven gear engagement that be sleeved on described valve rod on coaxial with described reducing motor live axle; Described driven gear top is provided with driven gear clutch engaging tooth, described clutch on-off engaging tooth and the engagement of described driven gear clutch engaging tooth.
5, manual and automatic integrated passenger train water-feeding valve according to claim 1, it is characterized in that: described valve rod is a whole bar, the upper end is square top, described valve rod is provided with and the into a single integrated structure described backwater valve head limit dais of described valve rod, is provided with described valve head annular steel ball restraining groove on the above top, circular arc bottom of described valve rod.
6, manual and automatic integrated passenger train water-feeding valve according to claim 1, it is characterized in that: described water inlet valve head includes described inlet valve head main body, valve head pressing plate and water inlet valve pad, described valve head pressing plate is circular arc and is fixed on described inlet valve head main body bottom, is provided with described water inlet valve pad between described inlet valve head main body and described valve head pressing plate; Described inlet valve head main body top is provided with described inlet valve head main body groove, on described inlet valve head main body recess sidewall, be provided with described inlet valve head main body annular sidewall groove, with the corresponding described inlet valve head main body cell wall of described spacing steel ball on be provided with through hole.
7, manual and automatic integrated passenger train water-feeding valve according to claim 1 is characterized in that: described backwater valve head includes back-water valve (BWV) head main body, backwater valve pad, and described back-water valve (BWV) head main body top is provided with described backwater valve pad.
8, manual and automatic integrated passenger train water-feeding valve according to claim 1 is characterized in that: described water outlet is one or more.
9, manual and automatic integrated passenger train water-feeding valve according to claim 8 is characterized in that: described water outlet is two, and two described water outlets place described body wall the same side or place described body wall either side respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101483056A CN101629633B (en) | 2009-06-15 | 2009-06-15 | Manual and automatic integrated passenger train water-feeding valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101483056A CN101629633B (en) | 2009-06-15 | 2009-06-15 | Manual and automatic integrated passenger train water-feeding valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101629633A true CN101629633A (en) | 2010-01-20 |
| CN101629633B CN101629633B (en) | 2011-09-14 |
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ID=41574855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101483056A Withdrawn - After Issue CN101629633B (en) | 2009-06-15 | 2009-06-15 | Manual and automatic integrated passenger train water-feeding valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101629633B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102709085A (en) * | 2012-05-02 | 2012-10-03 | 美的集团有限公司 | Switch structure |
| CN104613224A (en) * | 2015-02-10 | 2015-05-13 | 江西南洋电子科技有限公司 | Electronic temperature control valve |
| CN104633258A (en) * | 2015-02-10 | 2015-05-20 | 江西南洋电子科技有限公司 | Electronic thermostat valve control device |
| CN106246954A (en) * | 2016-08-31 | 2016-12-21 | 呼和浩特铁路局科研所 | The electronic water supply valve of passenger train |
| CN113236843A (en) * | 2021-05-19 | 2021-08-10 | 郭梦媚 | Manual-automatic integrated self-holding electromagnetic valve and use method thereof |
| CN113898750A (en) * | 2021-09-16 | 2022-01-07 | 浙江胜得龙阀门有限公司 | Intelligent gate valve and gate valve control method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2184831Y (en) * | 1993-08-19 | 1994-12-07 | 马富才 | Micro valve electric driving device |
| CN2170231Y (en) * | 1993-09-06 | 1994-06-29 | 呼和浩特铁路局科研所 | Double-valve type self-water return water supply valve for passenger train |
| CN201028086Y (en) * | 2006-12-27 | 2008-02-27 | 李兴 | Water supply-adjustable and automatic closing control valve |
| CN201475357U (en) * | 2009-06-15 | 2010-05-19 | 呼和浩特铁路局科学技术研究所 | Manual and automatic integral railway carriage water supply valve |
-
2009
- 2009-06-15 CN CN2009101483056A patent/CN101629633B/en not_active Withdrawn - After Issue
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102709085A (en) * | 2012-05-02 | 2012-10-03 | 美的集团有限公司 | Switch structure |
| CN102709085B (en) * | 2012-05-02 | 2016-04-20 | 美的集团股份有限公司 | A kind of construction of switch |
| CN104613224A (en) * | 2015-02-10 | 2015-05-13 | 江西南洋电子科技有限公司 | Electronic temperature control valve |
| CN104633258A (en) * | 2015-02-10 | 2015-05-20 | 江西南洋电子科技有限公司 | Electronic thermostat valve control device |
| CN106246954A (en) * | 2016-08-31 | 2016-12-21 | 呼和浩特铁路局科研所 | The electronic water supply valve of passenger train |
| CN106246954B (en) * | 2016-08-31 | 2019-03-12 | 呼和浩特铁路局科研所 | The electronic water supply valve of passenger train |
| CN113236843A (en) * | 2021-05-19 | 2021-08-10 | 郭梦媚 | Manual-automatic integrated self-holding electromagnetic valve and use method thereof |
| CN113236843B (en) * | 2021-05-19 | 2023-05-09 | 高砂电气(苏州)有限公司 | Manual-automatic integrated self-holding electromagnetic valve and use method thereof |
| CN113898750A (en) * | 2021-09-16 | 2022-01-07 | 浙江胜得龙阀门有限公司 | Intelligent gate valve and gate valve control method |
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|---|---|
| CN101629633B (en) | 2011-09-14 |
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Granted publication date: 20110914 Effective date of abandoning: 20180601 |