CN103982683B - Valve checking and switching mechanism - Google Patents
Valve checking and switching mechanism Download PDFInfo
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- CN103982683B CN103982683B CN201410228777.3A CN201410228777A CN103982683B CN 103982683 B CN103982683 B CN 103982683B CN 201410228777 A CN201410228777 A CN 201410228777A CN 103982683 B CN103982683 B CN 103982683B
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- return
- valve
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- switching mechanism
- rod
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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
- F16K15/00—Check valves
- F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention provides a valve checking and switching mechanism and belongs to the technical field of valves. The mechanism solves the problem that the existing valve cannot achieve switching of opening and closing of a checking function. The mechanism is arranged at the water inlet end of a valve body and comprises a spring and a check valve element. Two ends of the spring are connected at the inner end of the check valve element and on the inner wall of the valve body. The mechanism further comprises an annular sealing sleeve and a switching rod which are fixed in the valve body close to a water inlet end port, the outer end of the check valve element abuts against the inner end of the annular sealing sleeve under the effect of elasticity of the spring to form sealing, the switching rod is perpendicular to the water inlet direction, the upper end of the switching rod stretches out of the valve body, a protruding strip is arranged on the lateral portion of the switching rod, and the protruding strip can be in contact with the outer end of the check valve element when the switching rod rotates to enable the check valve element to overcome the elasticity of the spring to move inwards. Due to the fact that the switching rod is arranged in the valve body, the protruding strip is arranged on the switching rod, the switching rod rotates to drive the protruding strip to change the direction, and switching of the valve checking function is achieved.
Description
Technical field
The invention belongs to valve technology field, it is related to a kind of non-return switching mechanism of valve.
Background technology
In order that fluid reaches the purpose of one-way flow in valve, non-return structure is often set up on valve.
For example, Chinese utility model patent (application number：201320025962.3；Authorization Notice No.：CN203036028U)
Disclose one kind and block check-valves, including valve body, valve body includes cut through and non-return portion, cut through includes cut-out cock and blocks
Chamber, cut-out cock be connected with valve body and be located at block above chamber；Non-return portion includes spring, flap and check cavity, spring and flap
It is placed in non-return intracavity, spring one end is connected with flap.Non-return and cut-out are integrated on a valve this valve, and structure is more tight
Gather, this valve can reach the effect of one-directional fluid flow.
In actual applications, when fluid situation is poor, in order to prevent reverse flow of fluids, valve need to possess check function；When
When fluid situation is relatively stable always, valve does not need check function.But in above-mentioned check-valves, but the setting due to spring,
Even if when valve does not need check function, fluid flows through and nevertheless suffers from certain resistance during valve, and impact fluid flows through valve
Circulation that is to say, that above-mentioned valve cannot realize check function switch switching.
Content of the invention
The purpose of the present invention is the problems referred to above existing for prior art it is proposed that one kind is capable of check function opens
Close the non-return switching mechanism of the valve of switching.
The purpose of the present invention can be realized by following technical proposal：A kind of non-return switching mechanism of valve, is arranged at valve
At the water inlet end of body, this non-return switching mechanism includes a spring and non-return valve core, and the two ends of described spring are connected to non-return
It is characterised in that this non-return switching mechanism also includes being fixed in valve body near water inlet on the inwall of the inner of valve element and valve body
The ring-shaped sealing sleeve of end port and changer lever, the outer end of described non-return valve core is resisted against annular under the elastic force effect of spring
Sealing is formed on sealing shroud the inner, described changer lever stretches out outside valve body with water inlet perpendicular and changer lever the upper end in direction, described
The sidepiece of changer lever has raised line, and described raised line can be contacted with non-return valve core outer end when changer lever rotates and make check-valves
Core overcomes spring force effect to move inward.
Valve body is stretched out in changer lever upper end, and operator can be opened with switching non-return in the valve body external rotating changer lever of valve
Close.When needing the check function of Open valve, rotate changer lever and make the raised line on changer lever depart from non-return valve core.In spring
In the presence of, non-return valve core can be resisted against ring packing and put to realize check function.Ring-shaped sealing sleeve also rises in valve body
Sealing function.When the check function needing to close valve, rotate changer lever and make the raised line on changer lever be resisted against check-valves
On core, non-return valve core overcomes spring force to move inward, and now, the check function of valve is closed.
Therefore, in the presence of this switching mechanism, the check function of valve mutually can switch under opening and closing two states.?
The check function of valve when not needing check function, can be closed, flow through, to reduce fluid, the resistance that fluid during valve is subject to, increase
The circulation of valve.
Valve body is stretched out so that operator are also more convenient to the operation of this switching mechanism in the upper end of changer lever.
In the non-return switching mechanism of above-mentioned valve, described changer lever includes the body of rod and is sheathed on the company on the body of rod
Female connector, described raised line is located at the sidepiece of adapter sleeve, and described adapter sleeve is circumferentially fixed with the body of rod, and the middle part of the described body of rod is solid
Surely there is split washer, the bottom of described adapter sleeve is resisted against on split washer.During assembling, first adapter sleeve is placed on valve body
Interior, body of rod insertion valve body outside valve body, and the body of rod passes through adapter sleeve.After the completion of the body of rod wears, split washer is fixed on
In the middle part of the body of rod, adapter sleeve is positioned on the body of rod.Adapter sleeve is circumferentially fixed with the body of rod, just can drive in the valve body external rotating body of rod
Adapter sleeve rotates, thus changing the orientation of raised line, realizes the switching effect of check function.
In the non-return switching mechanism of above-mentioned valve, the inside bottom of described adapter sleeve has the limited block of protrusion,
Described body of rod sidepiece correspondence has the limited mouth with limited block mating shapes, and described limited block is located at limited mouth.?
Limited block and limited mouth are respectively provided with adapter sleeve and the body of rod, realize the circumferentially fixed of adapter sleeve and the body of rod, add split washer
Setting, adapter sleeve mutually positions so that the structure of mechanism is relatively stable with the body of rod.
In the non-return switching mechanism of above-mentioned valve, the quantity of described raised line is two and two raised lines are symmetrical
Sidepiece in adapter sleeve.That is, two raised lines are located on the same line.During mechanism work, only need to rotate 90 °, just
Valve can be made to realize switching between the opening and closing of check function, operation is more convenient.
In the non-return switching mechanism of above-mentioned valve, the described body of rod passes through ring-shaped sealing sleeve, described valve inleting water
Installing hole is had on end, the upper end of the described body of rod is located at installing hole and has for being connected with instrument in the upper end of the body of rod
Connecting portion.The connecting portion of the body of rod, at the installing hole of valve body, facilitates operator to rotate the body of rod so that originally cutting by instrument
The operation of converting mechanism is more convenient.The body of rod passes through ring-shaped sealing sleeve so that ring-shaped sealing sleeve also plays positioning action to the body of rod, makes
The structure obtaining mechanism is more stable.
In the non-return switching mechanism of above-mentioned valve, described non-return valve core is in round table-like and non-return valve core from its outer end
Inboard end is gradually increased, and the inner inner side of described ring-shaped sealing sleeve has the sealing surface matching with non-return valve core outer end, institute
The non-return valve core sidepiece stated is provided with O-ring at its outer end, and described O-ring is resisted against on above-mentioned sealing surface.Check-valves
The sealing surface of core and ring-shaped sealing sleeve match and on non-return valve core setting O-ring so that non-return valve core and ring-shaped sealing sleeve
Between sealing effectiveness preferable.Certainly, except round table-like, the shape of non-return valve core can also be other being suitable for and ring-shaped sealing sleeve
Between can form the shape of sealing.
In the non-return switching mechanism of above-mentioned valve, described non-return valve core the inner is evenly equipped with the positioning of some protrusions
Block, described locating piece has stepped locating surface, and one end of described spring is set on locating piece and spring
This end is resisted against the bottom of locating surface.It is provided for the locating piece of sheathed spring one end in non-return valve core the inner so that spring
Connection and non-return valve core between is relatively stable.
In the non-return switching mechanism of above-mentioned valve, the outer end of described non-return valve core is evenly equipped with the guiding of some protrusions
Bar, described gib block stretches in ring-shaped sealing sleeve.During switching mechanism runs, it is close that gib block abuts in annular always
So that moving direction in moving process for the non-return valve core is more steady inside big envelope, so that the non-return work(of only mechanism
Enable relatively stable.
In the non-return switching mechanism of above-mentioned valve, described valve interior wall has in ladder near water inlet end port
The installed surface of shape, the described side of the outer end of ring-shaped sealing sleeve is fitted with above-mentioned installed surface, close in described valve body
Water inlet end port is further fixed on a hole back-up ring, and the outer end of described ring-shaped sealing sleeve is resisted against on the back-up ring of hole.Install
When, ring-shaped sealing sleeve is loaded in valve body, then hole back-up ring is fixed to water inlet end port, hole back-up ring is by ring-shaped sealing sleeve
It is positioned in valve body.
In the non-return switching mechanism of above-mentioned valve, between described ring-shaped sealing sleeve and valve body, it is provided with sealing ring one.?
So that mechanism is close when playing check function under the collective effect of sealing ring one, ring-shaped sealing sleeve, non-return valve core and O-ring
Envelope property is preferable.
In the non-return switching mechanism of above-mentioned valve, between described changer lever and valve body, it is provided with sealing ring two.Sealing ring
Two not only seal between the body of rod and valve body, after the body of rod turns an angle, rubbing between sealing ring two and valve body
Wiping power can also make the body of rod position relative to valve body.
In the non-return switching mechanism of above-mentioned valve, described changer lever lower end is located in ring packing and puts.Changer lever
Lower end and the cooperation of ring-shaped sealing sleeve, realize changer lever lower end positioning so that changer lever is relatively stable when rotating.
In the non-return switching mechanism of above-mentioned valve, described raised line is used for have on one end of contacting with non-return valve core
Arc surface.On raised line, setting arc surface, so that the contact between raised line and non-return valve core is more smooth, facilitates operator couple
The operation of changer lever.
Compared with prior art, the non-return switching mechanism of this valve is due to setting changer lever and in changer lever in valve body
Upper setting raised line, changer lever rotates and drives raised line to change orientation, realizes the effect to the switching of valve check function.
Brief description
Fig. 1 is the axonometric chart that this switching mechanism is located on a kind of valve；
Fig. 2 is the sectional view that this switching mechanism is in switching state one；
Fig. 3 is the sectional view that this switching mechanism is in switching state two；
Fig. 4 is the detonation configuration figure at non-return valve core in this switching mechanism；
Fig. 5 is the detonation configuration figure at changer lever in this switching mechanism.
In figure, 1, valve body；1a, installing hole；1b, convex shoulder one；2nd, spring；3rd, non-return valve core；3a, locating piece；3b, guiding
Bar；3c, locating surface；4th, ring-shaped sealing sleeve；4a, sealing surface；5th, changer lever；5a, the body of rod；5b, adapter sleeve；5c, limited block；5d、
Limited mouth；5e, connecting portion；5f, raised line；7th, split washer；8th, O-ring；9th, hole back-up ring；10th, sealing ring one；11st, sealing ring
Two.
Specific embodiment
The following is the specific embodiment of the present invention and combine accompanying drawing, technical scheme is further described,
But the present invention is not limited to these embodiments.
As shown in figure 1, the non-return switching mechanism of this valve is arranged at the water inlet end of valve 1.
As shown in Figure 1 to Figure 3, this non-return switching mechanism includes a spring 2 and non-return valve core 3.There is in valve body 1 convex shoulder one
1b, the two ends of spring 2 are connected on convex shoulder one 1b in the inner of non-return valve core 3 and valve body 1, and the effect in spring 2
Under, non-return valve core 3 has the trend being displaced outwardly.As shown in figure 3, when mechanism is in non-return state, non-return valve core 3 against
On ring-shaped sealing sleeve 4.
Valve body 1 inwall has stepped installed surface, the side of the outer end of ring-shaped sealing sleeve 4 near water inlet end port
Face is fitted with above-mentioned installed surface, is further fixed on a hole back-up ring 9 near water inlet end port in valve body 1, ring-shaped sealing sleeve 4
Outer end is resisted against on hole back-up ring 9.It is provided with sealing ring 2 11 between ring-shaped sealing sleeve 4 and valve body 1.
During installation, ring-shaped sealing sleeve 4 is loaded in valve body 1, then hole back-up ring 9 is fixed to water inlet end port, Kong Yong
Ring-shaped sealing sleeve 4 is positioned in valve body 1 back-up ring 9.Setting installed surface, prevents ring-shaped sealing sleeve 4 from moving to the inside of valve body 1, if
Put hole back-up ring 9, prevent ring-shaped sealing sleeve 4 to be displaced outwardly, under the installed surface and hole style of work with back-up ring 9, ring packing
Circle is positioned in the water inlet end port of valve body 1.
Non-return valve core 3 is gradually increased from its outer end inboard end in round table-like and non-return valve core 3, ring-shaped sealing sleeve 4 the inner
Inner side has the sealing surface 4a matching with non-return valve core 3 outer end, and non-return valve core 3 sidepiece is provided with O-ring 8, O at its outer end
Type circle 8 is resisted against on above-mentioned sealing surface 4a.Non-return valve core 3 is matched and in check-valves with the sealing surface 4a of ring-shaped sealing sleeve 4
On core 3, setting O-ring 8 is so that the sealing effectiveness between non-return valve core 3 and ring-shaped sealing sleeve 4 is preferable.
As shown in figure 4, non-return valve core 3 the inner is evenly equipped with four being uniformly distributed and inwardly projecting locating piece 3a, locating piece
Stepped locating surface 3c is had on 3a, one end of spring 2 be set on four locating piece 3a and spring 2 this end against
Bottom in locating surface 3c.So, the connection between spring 2 and non-return valve core 3 is relatively stable.
In order to prevent raised line 5f from promoting non-return valve core 3 after non-return valve core 3 to deflect, uniform in the outer end of non-return valve core 3
Four outwardly gib block 3b, gib block 3b is had to stretch in ring-shaped sealing sleeve 4.During switching mechanism runs, lead
Abut in ring-shaped sealing sleeve 4 inner side to bar 3b always so that moving direction in moving process for the non-return valve core 3 is more steady,
So that only the check function of mechanism realize relatively stable.
Changer lever 5 includes the body of rod 5a being vertically arranged and is sheathed on the adapter sleeve 5b on body of rod 5a.On valve body 1 water inlet end
There is installing hole 1a, body of rod 5a from the top down pass through valve body 1 on installing hole 1a and ring-shaped sealing sleeve 4 side wall, under body of rod 5a
End penetrates the side wall of ring-shaped sealing sleeve 4 that is to say, that body of rod 5a lower end is positioned on ring-shaped sealing sleeve 4.So, body of rod 5a
Upper and lower ends be all positioned it is ensured that changer lever 5 can be stable rotation.The upper end of body of rod 5a is located at installing hole 1a and in the body of rod
The upper end of 5a has the connecting portion 5e for being connected with instrument.The connecting portion 5e of body of rod 5a is provided with a word fluting.During switching,
Straight screwdriver insertion one word is slotted and rotated just can make this switching mechanism switch under two states.
As shown in figure 5, the inside bottom of adapter sleeve 5b has two limited block 5c that are symmetrical and protruding, body of rod 5a sidepiece pair
Should have two limited mouth 5d with limited block 5c mating shapes, limited block 5c is reclined with limited mouth 5d phase, adapter sleeve 5b and
Pass through the effect axial restraint of limited block 5c and limited mouth 5d between body of rod 5a.When body of rod 5a rotates, body of rod 5a can the company of drive
Female connector 5b rotates together.
Adapter sleeve 5b lower end sidepiece has two raised line 5f that are symmetrical and protruding, and two raised line 5f are located at same straight line
On.Paralleled with the setting direction of raised line 5f in the direction that one word opens up, so, being capable of clear indication outside valve body 1
The orientation of raised line 5f, convenient operation.The one end being contacted with non-return valve core 3 is used on the outer end of raised line 5f, that is, raised line 5f
There is arc surface so that the contact between raised line 5f and non-return valve core 3 more smooths so that mechanism action is more smooth.
In assembling, after adapter sleeve 5b is set on body of rod 5a, split washer 7 is fixed on the middle part of body of rod 5a, even
The bottom of female connector 5b is resisted against on split washer 7, and adapter sleeve 5b is positioned on the body of rod 5a split washer 7.
It is provided with sealing ring 1 between the connecting portion 5e of body of rod 5a and valve body 1.Sealing ring 1 body of rod 5a and valve body 1 it
Between not only act as sealing function, also increase resistance when changer lever 5 rotates, prevent changer lever 5 freely rotatable so that mechanism
Structure is relatively stable.
Now the work process of this switching mechanism is described below：
Raised line 5f can be contacted with non-return valve core 3 outer end when changer lever 5 rotates and make non-return valve core 3 overcome spring 2
Elastic force acts on and moves inward.
Valve body 1 is stretched out in changer lever 5 upper end, and operator can be in the valve body 1 external rotating changer lever 5 of valve to switch non-return
Opening and closing.When needing the check function of Open valve, rotate changer lever 5 and make the raised line 5f on changer lever 5 depart from non-return valve core
3.In the presence of spring 2, non-return valve core 3 can be resisted against on ring-shaped sealing sleeve 4 to realize check function.When needing shutoff valve
When the check function of door is to realize valve bigger circulation, rotates changer lever 5 and the raised line 5f on changer lever 5 is only resisted against
Return on valve element 3, non-return valve core 3 overcomes spring 2 elastic force to move inward, and now, the check function of valve is closed.
In the presence of this switching mechanism, the check function of valve mutually can switch under opening and closing two states.It is being not required to
The check function of valve when wanting check function, can be closed, flow through, to reduce fluid, the resistance that fluid during valve is subject to, increase valve
Circulation.
The replacement scheme being readily apparent that as another kind, the medial wall of valve body 1 has convex shoulder two, non-return valve core 3 with convex
Shoulder two forms sealing after leaning.
Specific embodiment described herein is only explanation for example to present invention spirit.The affiliated technology of the present invention is led
The technical staff in domain can be made various modifications or supplement or replaced using similar mode to described specific embodiment
Generation, but the spirit without departing from the present invention or surmount scope defined in appended claims.
Claims (10)
1. the non-return switching mechanism of a kind of valve, is arranged at the water inlet end of valve body (1), and this non-return switching mechanism includes a spring
(2) and non-return valve core (3), the two ends of described spring (2) are connected to the inner of non-return valve core (3) and the inwall of valve body (1)
Above it is characterised in that this non-return switching mechanism also includes being fixed on the ring-shaped sealing sleeve near water inlet end port in valve body (1)
(4) and changer lever (5), the outer end of described non-return valve core (3) is resisted against ring-shaped sealing sleeve under the elastic force effect of spring (2)
(4) sealing is formed on the inner, described changer lever (5) stretches out valve body (1) with water inlet perpendicular and changer lever (5) the upper end in direction
Outward, the sidepiece of described changer lever (5) has raised line (5f), and described raised line (5f) can be with check-valves when changer lever (5) rotates
Core (3) outer end contacts and makes non-return valve core (3) overcome the effect of spring (2) elastic force to move inward.
2. the non-return switching mechanism of valve according to claim 1 is it is characterised in that described changer lever (5) includes bar
Body (5a) and be sheathed on adapter sleeve (5b) on the body of rod (5a), described raised line (5f) is located at the sidepiece of adapter sleeve (5b), institute
The adapter sleeve (5b) stated is circumferentially fixed with the body of rod (5a), the described body of rod (5a) be fixedly arranged in the middle of split washer (7), described
The bottom of adapter sleeve (5b) is resisted against on split washer (7).
3. the non-return switching mechanism of valve according to claim 2 is it is characterised in that the inner side of described adapter sleeve (5b)
Bottom has the limited block (5c) of protrusion, and the described body of rod (5a) sidepiece correspondence has the limit with limited block (5c) mating shapes
Position mouth (5d), described limited block (5c) is located at limited mouth (5d) place.
4. the non-return switching mechanism of the valve according to Claims 2 or 3 is it is characterised in that the number of described raised line (5f)
Measure the sidepiece being symmetrically distributed in adapter sleeve (5b) for two and two raised lines (5f).
5. the non-return switching mechanism of the valve according to Claims 2 or 3 is it is characterised in that the described body of rod (5a) passes through
Ring-shaped sealing sleeve (4), described valve body (1) water inlet end has installing hole (1a), and the upper end of the described body of rod (5a) is located at peace
Fill hole (1a) place and in the upper end of the body of rod (5a), be there is the connecting portion (5e) for being connected with instrument.
6. the non-return switching mechanism of the valve according to claim 1 or 2 or 3 is it is characterised in that described non-return valve core
(3) be in round table-like and non-return valve core (3) is gradually increased from its outer end inboard end, the inner inner side of described ring-shaped sealing sleeve (4)
There is the sealing surface (4a) matching with non-return valve core (3) outer end, described non-return valve core (3) sidepiece is provided with its outer end
O-ring (8), described O-ring (8) can be resisted against on above-mentioned sealing surface (4a).
7. the non-return switching mechanism of the valve according to claim 1 or 2 or 3 is it is characterised in that described non-return valve core
(3) the inner is evenly equipped with the locating piece (3a) of some protrusions, and described locating piece (3a) has stepped locating surface (3c),
One end of described spring (2) is set in that locating piece (3a) is upper and this end of spring (2) is resisted against the bottom of locating surface (3c).
8. the non-return switching mechanism of the valve according to claim 1 or 2 or 3 is it is characterised in that described non-return valve core
(3) outer end is evenly equipped with the gib block (3b) of some protrusions, and described gib block (3b) stretches in ring-shaped sealing sleeve (4).
9. the non-return switching mechanism of the valve according to claim 1 or 2 or 3 is it is characterised in that in described valve body (1)
Wall has a stepped installed surface near water inlet end port, the described side of outer end of ring-shaped sealing sleeve (4) with upper
State installed surface to fit, in described valve body (1), be further fixed on a hole back-up ring (9) near water inlet end port, described ring
The outer end of shape sealing shroud (4) is resisted against on hole back-up ring (9).
10. the non-return switching mechanism of the valve according to claim 1 or 2 or 3 is it is characterised in that under described changer lever (5)
End is located on ring-shaped sealing sleeve (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410228777.3A CN103982683B (en) | 2014-05-27 | 2014-05-27 | Valve checking and switching mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410228777.3A CN103982683B (en) | 2014-05-27 | 2014-05-27 | Valve checking and switching mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103982683A CN103982683A (en) | 2014-08-13 |
| CN103982683B true CN103982683B (en) | 2017-02-15 |
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ID=51274771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410228777.3A Active CN103982683B (en) | 2014-05-27 | 2014-05-27 | Valve checking and switching mechanism |
Country Status (1)
| Country | Link |
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| CN (1) | CN103982683B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5590679A (en) * | 1993-07-08 | 1997-01-07 | Wcm Industries, Inc. | Wall water hydrant having backflow and back siphonage preventor |
| CN1333191C (en) * | 2003-03-20 | 2007-08-22 | 李金友 | Novel controllable non-return valve |
| CN202327262U (en) * | 2011-11-26 | 2012-07-11 | 重庆市智能水表有限责任公司 | Drip-proof check valve |
| CN202852090U (en) * | 2012-09-28 | 2013-04-03 | 宝钢不锈钢有限公司 | Integral valve capable of controlling and automatically cutting out flow |
| CN203868434U (en) * | 2014-05-27 | 2014-10-08 | 浙江博民机电股份有限公司 | Non-return switching mechanism of valve |
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2014
- 2014-05-27 CN CN201410228777.3A patent/CN103982683B/en active Active
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| CN103982683A (en) | 2014-08-13 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Check switch mechanism of valve Effective date of registration: 20210528 Granted publication date: 20170215 Pledgee: Industrial Commercial Bank of China Ltd. Yuhuan branch Pledgor: ZHEJIANG BEST AND HONEST ELECTROMECHANICS Co.,Ltd. Registration number: Y2021330000481 |
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