CN209622272U - A kind of intake valve that can share water hammer pressure - Google Patents
A kind of intake valve that can share water hammer pressure Download PDFInfo
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- CN209622272U CN209622272U CN201920284522.7U CN201920284522U CN209622272U CN 209622272 U CN209622272 U CN 209622272U CN 201920284522 U CN201920284522 U CN 201920284522U CN 209622272 U CN209622272 U CN 209622272U
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- flap valve
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 125
- 230000009471 action Effects 0.000 claims abstract description 14
- 238000007599 discharging Methods 0.000 claims description 3
- 239000000696 magnetic material Substances 0.000 claims description 3
- 230000005484 gravity Effects 0.000 abstract description 5
- 230000001681 protective effect Effects 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000002262 irrigation Effects 0.000 description 5
- 238000003973 irrigation Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The utility model provides a kind of intake valve that can share water hammer pressure, including valve body, the first flap valve and the second flap valve；The lower end of the valve body is equipped with water inlet, and the upper end of valve body is equipped with water outlet, and the side of valve body is equipped with air inlet；First flap valve is rotatably arranged in valve body, can be faced away from the direction rotation of air inlet when the first flap valve is cut off the water under the action of negative pressure, is connected to air inlet with valve body, can prevent liquid from flowing out air inlet sealing in the presence of hydraulic pressure when water supply.Second flap valve is rotatably arranged in valve body, and the second flap valve can rotate when supplying water under flow action towards water outlet direction, is connected to inlet and outlet, is closed water outlet under the action of Shi Shui gravity of cutting off the water and is shared the water hammer pressure of top water body generation.The utility model is used to drop the water hammer pressure of bottom pipeline bottom, while can also prevent pipeline inside from generating negative pressure and extend the service life of pipeline so that protective conduit is not damaged.
Description
Technical field
The utility model relates to pipeline valve technical fields, and in particular to a kind of intake valve that can share water hammer pressure.
Background technique
Water hammer effect be a kind of figuratively method it refer to feed pump when starting and stopping, water impact pipeline generates
A kind of serious water attack.Due to inside water pipe, inside pipe wall be it is smooth, water flowing is freely.When open valve is closed suddenly
Or feed pump stops, water flow can generate a pressure to valve and tube wall, mainly valve or pump.It is subsequent since tube wall is smooth
Under the action of inertia, waterpower is rapidly reached maximum to water flow, and generates destruction, and implement piping transportation water irrigation, trickle irrigation,
During the water-saving irrigation such as sprinkling irrigation, it often will appear remote or high lift water delivery, since the longer or height difference of water delivery distance is excessive,
The damage that biggish water hammer pressure causes water pump or bottom pipe can be produced in the moment of termination of pumping.Since height difference is excessive, in gravity
It acts on water in lower pipeline to flow back rapidly, also will cause inside pipeline and vacuum occur, negative pressure is generated, by Pipeline damage.
Utility model content
In view of the drawbacks of the prior art, the utility model provides a kind of intake valve that can share water hammer pressure, for dropping bottom
The water hammer pressure of duct bottom, while can also prevent from generating negative pressure inside pipeline, so that protective conduit is not damaged, extend pipeline
Service life.
The utility model provides a kind of intake valve that can share water hammer pressure, including valve body, the first flap valve and second count
Door；
The lower end of the valve body is equipped with water inlet, and the upper end of valve body is equipped with water outlet, and the side of valve body is equipped with air inlet；
First flap valve is rotatably arranged in valve body, can be faced away under the action of negative pressure when the first flap valve is cut off the water into
The direction of port rotates, and is connected to air inlet with valve body；In the presence of hydraulic pressure can seal air inlet when water supply prevents liquid
Outflow.
Second flap valve is rotatably arranged in valve body, and the second flap valve can be towards water outlet side under flow action when supplying water
To rotation, it is connected to inlet and outlet；Cut off the water and closes water outlet under the action of Shi Shui gravity and share the production of top water body
Raw water hammer pressure.
In the above-mentioned technical solutions, the utility model can also do following improvement.
Preferred technical solution, additional technical feature are: the valve body include shell, water inlet pipe, outlet pipe and into
Tracheae, the shell include upper and lower part, and the upper end of lower part is arranged in the top, and the water inlet pipe is fixed at lower part
Lower end, the water inlet direction of water inlet pipe is the water inlet, and the upper end on top, the water side of outlet pipe is arranged in the outlet pipe
To for the water outlet, the air inlet pipe is two and is symmetricly set on the side of lower part, and the airintake direction of air inlet pipe is described
Air inlet.
Preferred technical solution, additional technical feature are: the upper and lower part is rectangular, and the top is solid
The hollow structure that the middle upper end of lower part makes shell form T-shaped is set calmly.
Preferred technical solution, additional technical feature are: the vertical section product of the lower part is greater than the air inlet pipe
Orifice area.
Preferred technical solution, additional technical feature are: the horizontal sectional area on the top is greater than the outlet pipe
Orifice area.
Preferred technical solution, additional technical feature are: the side of the lower part be symmetrically arranged with it is convex stupefied, described first
One end of flap valve and described convex stupefied hinged, the other end of the first flap valve is movable end.
Preferred technical solution, additional technical feature are: the side of the lower part is symmetrically arranged with positioned at described convex stupefied
The magnetic patch of underface, first flap valve are made of magnetic material, and the movable end of the first flap valve can attract each other with the magnetic patch.
Preferred technical solution, additional technical feature are: under one end of second flap valve and the interior of the top
End rotation connection, the other end of the second flap valve are movable end, and the surface area of the second flap valve is greater than the area of top lower ending opening.
Preferred technical solution, additional technical feature are: the first rubber mat is fixed on first flap valve, it is described
The second rubber mat is fixed on second flap valve.
Preferred technical solution, additional technical feature are: the nozzle of the water inlet pipe and outlet pipe is fixed with
Connecting flange.
Compared with prior art, the utility model has the beneficial effects that the utility model passes through setting valve body, the first flap valve
With the second flap valve；By the way that valve body to be connected on pipeline, in normal water supply, the second flap valve is opened, and the first flap valve is closed, and is being stopped
The moment of pump, the second flap valve are closed under the action of self gravity and water pressure, and the first flap valve is fast under negative-pressure sucking effect
Speed is opened, and air, which enters pipeline, prevents pipeline because negative pressure is damaged, and at this moment water pump and bottom pipe are solely subjected to from valve body to lower tube
The water hammer pressure that road water body generates, plays the protective effect to pipeline, and the utility model structure is simple, easy for installation, and work
Work is corresponding rapid, can protect for a long time to pipeline, extend the service life of pipeline.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described.In all the appended drawings, similar
Element or part are generally identified by similar appended drawing reference.In attached drawing, each element or part might not be according to actual ratios
It draws.
Fig. 1 is a kind of structural schematic diagram of intake valve that can share water hammer pressure of the utility model embodiment.
Fig. 2 is that a kind of intake valve that can share water hammer pressure of the utility model embodiment works signal in piped water supply
Figure.
Fig. 3 is the partial enlargement diagram of Fig. 2.
Fig. 4 is that a kind of intake valve that can share water hammer pressure of the utility model embodiment works signal when pipeline is cut off the water
Figure.
Fig. 5 is the partial enlargement diagram of Fig. 4.
Specific embodiment
For the utility model content, feature and effect that can further appreciate that the utility model, the following examples are hereby given, and
Detailed description are as follows:
Fig. 1 is a kind of structural schematic diagram of intake valve that can share water hammer pressure of the utility model embodiment.
Fig. 2 is that a kind of intake valve that can share water hammer pressure of the utility model embodiment works signal in piped water supply
Figure.
Fig. 3 is the partial enlargement diagram of Fig. 2.
Fig. 4 is that work is shown when a kind of intake valve that can share water hammer pressure of the utility model embodiment is cut off the water in the duct
It is intended to.
Fig. 5 is the partial enlargement diagram of Fig. 4.
In figure, the expression meaning of each label is as follows:
1, valve body；11, shell；111, top；112, lower part；113, convex stupefied；114, magnetic patch；12, water inlet pipe；13, it is discharged
Pipe；14, air inlet pipe；15, connecting flange；2, the first flap valve；21, the first rubber mat；3, the second flap valve；31, the second rubber mat.
Fig. 1 to Fig. 5 is please referred to, a kind of intake valve that can share water hammer pressure, including valve body 1, are present embodiments provided
One flap valve 2 and the second flap valve 3；
The lower end of the valve body 1 is equipped with water inlet, and the upper end of valve body 1 is equipped with water outlet, and the side of valve body 1 is equipped with air inlet
Mouthful；
First flap valve 2 is rotatably arranged in valve body 1, and the first flap valve 2 can face away from air inlet under the action of negative pressure
The direction rotation of mouth, is connected to air inlet with valve body 1；
Second flap valve 3 is rotatably arranged in valve body 1, and the second flap valve 3 can be towards water outlet direction under flow action
Rotation, is connected to inlet and outlet.
The present embodiment passes through setting valve body 1, the first flap valve 2 and the second flap valve 3；By the way that valve body 1 is connected on pipeline, In
When normal water supply, the second flap valve 3 is rotated under flow action towards water outlet direction, so that water outlet and water inlet are opened, the
One flap valve 2 is closed, and in the moment of termination of pumping, the second flap valve 3 is closed under the action of self gravity and hydraulic pressure, valve body 1 and anchor block point
The water hammer pressure that water discharging direction water body generates is carried on a shoulder pole, and the first flap valve 2 faces away from rapidly air inlet under negative-pressure sucking effect
Direction rotation, air enters in pipeline from air inlet, prevents pipeline because negative pressure is damaged, at this moment water pump and positioned at 1 lower section of valve body
Pipeline is solely subjected to the water hammer pressure generated from valve body 1 to the pipeline water body of 1 lower section of valve body, plays the protective effect to pipeline.
Referring to Fig. 1, the valve body 1 includes shell 11, water inlet pipe 12, outlet pipe 13 and air inlet pipe 14, the shell 11
Including top 111 and lower part 112, the upper end of lower part 112 is arranged in the top 111, and the water inlet pipe 12 is fixed at down
The water inlet direction of the lower end in portion 112, water inlet pipe 12 is the water inlet, and the upper end on top 111 is arranged in the outlet pipe 13, out
The water discharging direction of water pipe 13 is the water outlet, and the air inlet pipe 14 is two and is symmetricly set on the side of lower part 112, air inlet
The airintake direction of pipe 14 is the air inlet.
By setting shell 11, water inlet pipe 12, outlet pipe 13 and air inlet pipe 14, shell 11 respectively with water inlet pipe 12, water outlet
Pipe 13 and air inlet pipe 14 are integrally formed manufacture, and water inlet pipe 12 and outlet pipe 13 are connect with pipeline respectively, and shell 11 includes top 111
With lower part 112, top 111 and lower part 112 are hollow structure, and effect is formed and reserved for the first flap valve 2 and the second flap valve 3
Installation space, while it is connected to water inlet pipe 12, outlet pipe 13 with air inlet pipe 14.
Other quantity also can be set into other than for two in 14 quantity of air inlet pipe in the present embodiment, here can root
It is designed according to the watt level of water pump, the power of water pump and the quantity of air inlet pipe 14 are positively correlated.
Referring to Fig. 1, the top 111 and lower part 112 are rectangular, the top 111 is fixed at lower part 112
Middle upper end make shell 11 formed fall T-shaped hollow structure.
Here top 111 and lower part 112 are arranged to cuboid shape, and manufacture is more convenient while more attractive, after also facilitating
The installation of continuous first flap valve 2 and the second flap valve 3.
The vertical section product of the lower part 112 is greater than the orifice area of the air inlet pipe 14 referring to FIG. 1 to FIG. 4,.
Lower part 112 can be allowed to leave enough pre-installation spaces to the first flap valve 2 in this way, so that the first flap valve 2 is being arranged
Behind lower part 112, the orifice area of air inlet pipe 14 can be greater than, the first flap valve 2 can close air inlet pipe under initial situation
14, avoid water flow from flowing out from air inlet pipe 14.
Fig. 1, Fig. 2, Fig. 4 and Fig. 5 are please referred to, the horizontal sectional area on the top 111 is greater than the nozzle of the outlet pipe 13
Area.
Lower part 112 can be allowed to leave enough pre-installation spaces, while but also the second flap valve 3 to the second flap valve 3 in this way
After being rotatably arranged on top 111,13 orifice area of outlet pipe can be greater than, the second flap valve 3 can be closed thoroughly after revolution
Firmly outlet pipe 13 prevent the aqueous reflux of outlet pipe 13 into water inlet pipe 12.
Please refer to Fig. 2 and Fig. 3, the side of the lower part 112 is symmetrically arranged with convex stupefied 113, one end of first flap valve 2 with
Described convex stupefied 113 is hinged, and the other end of the first flap valve 2 is movable end.
Convex stupefied 113, convex stupefied 113 first flap valve 2 is hinged in lower part 112 by setting, the first flap valve 2 can be with
It is hinged with convex stupefied 113 by articulation pieces such as hinge, hinges.
Fig. 3 and Fig. 4 are please referred to, the side of the lower part 112 is symmetrically arranged with the magnetic patch immediately below described convex stupefied 113
114, first flap valve 2 is made of magnetic material, and the movable end of the first flap valve 2 can attract each other with the magnetic patch 114.
By the way that magnetic patch 114 is arranged, so that valve body 1, in normal water flowing, the movable end of the first flap valve 2 can be with magnetic patch
114 have attracted, and further avoid water flow and flow out from air inlet pipe 14, the first flap valve 2 can be made by magnet here.
Fig. 4 and Fig. 5 are please referred to, one end of second flap valve 3 and the interior lower end on the top 111 are rotatablely connected, and second
The other end of flap valve 3 is movable end, and the surface area of the second flap valve 3 is greater than the area of 111 lower ending opening of top.
Due to the second flap valve 3 surface area be greater than 111 lower ending opening of top area, the second flap valve 3 return back to it is upper
After the interior lower end in contact in portion 111, the aqueous reflux in top 111 can be effectively prevent into lower part 112.
Fig. 3 and Fig. 5 are please referred to, the first rubber mat 21 is fixed on first flap valve 2, is fixed on second flap valve 3
Equipped with the second rubber mat 31.
The first rubber mat 21 and the second rubber mat 31 being arranged play the role of sealing and buffering percussive force, here the first rubber mat
21 are arranged in the inner face of the first flap valve 2, and the lower end surface of the second flap valve 3 is arranged in the second rubber mat 31.
Please refer to Fig. 1, Fig. 2 and Fig. 4, the nozzle of the water inlet pipe 12 and outlet pipe 13 is fixed with connecting flange 15.
The connecting flange 15 of setting with pipeline for connecting respectively with water inlet pipe 12 and outlet pipe 13 is made.
The middle part of pipeline is arranged in the present embodiment, can be arranged when the longer and/or difference in height of pipeline distance is larger several more
It is a.
Simultaneously as the first flap valve 2 is not to be fully sealed, therefore can have part sundries and can enter in valve body 1, it is dirty
The water body in pipeline is contaminated, therefore the utility model is suitable for the water conveyance pipeline projects not high to water quality requirement such as field irrigation, it is right
Human livestock drinking water etc. then needs to be used with caution to the higher engineering of water quality requirement.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " suitable
The orientation or positional relationship of the instructions such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " is orientation based on the figure
Or positional relationship, be merely for convenience of describing the present invention and simplifying 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 should not be understood as the limit to the utility model
System.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.The meaning of " plurality " is two or more in the description of the present invention, remove
It is non-separately to have clearly specific restriction.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be
Mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside element.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature is in the second feature " on " or " down "
It can be that the first and second features directly contact or the first and second features are by intermediary mediate contact.Moreover, first is special
Sign can be fisrt feature above the second feature " above ", " above " and " above " and be directly above or diagonally above the second feature, or only
Indicate that first feature horizontal height is higher than second feature.Fisrt feature under the second feature " below ", " below " and " below " can be with
It is that fisrt feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
It states and is necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with
It can be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this field
Technical staff can by the feature of different embodiments or examples described in this specification and different embodiments or examples into
Row combination and combination.Although the embodiments of the present invention have been shown and described above, it is to be understood that above-mentioned implementation
Example is exemplary, and should not be understood as limiting the present invention, those skilled in the art are in the utility model
It can make changes, modifications, alterations, and variations to the above described embodiments in range.
Claims (10)
1. a kind of intake valve that can share water hammer pressure, it is characterised in that: including valve body, the first flap valve and the second flap valve；
The lower end of the valve body is equipped with water inlet, and the upper end of valve body is equipped with water outlet, and the side of valve body is equipped with air inlet；
First flap valve is rotatably arranged in valve body, and the first flap valve can face away from the direction of air inlet under the action of negative pressure
Rotation, is connected to air inlet with valve body；
Second flap valve is rotatably arranged in valve body, and the second flap valve can rotate under flow action towards water outlet direction, is made
Inlet and outlet connection.
2. a kind of intake valve that can share water hammer pressure according to claim 1, it is characterised in that: the valve body includes shell
Body, water inlet pipe, outlet pipe and air inlet pipe, the shell include upper and lower part, and the upper end of lower part is arranged in the top, described
Water inlet pipe is fixed at the lower end of lower part, and the water inlet direction of water inlet pipe is the water inlet, and the outlet pipe is arranged on top
Upper end, the water discharging direction of outlet pipe is the water outlet, and the air inlet pipe is two and is symmetricly set on the side of lower part, into
The airintake direction of tracheae is the air inlet.
3. a kind of intake valve that can share water hammer pressure according to claim 2, it is characterised in that: the upper and lower part
It is rectangular, the middle upper end that the top is fixed at lower part make shell formed fall T-shaped hollow structure.
4. a kind of intake valve that can share water hammer pressure according to claim 3, it is characterised in that: the lower part it is vertical
Sectional area is greater than the orifice area of the air inlet pipe.
5. a kind of intake valve that can share water hammer pressure according to claim 3, it is characterised in that: the level on the top
Sectional area is greater than the orifice area of the outlet pipe.
6. a kind of intake valve that can share water hammer pressure according to claim 4, it is characterised in that: the side of the lower part
It is symmetrically arranged with convex stupefied, one end of first flap valve and described convex stupefied hinged, the other end of the first flap valve is movable end.
7. a kind of intake valve that can share water hammer pressure according to claim 6, it is characterised in that: the side of the lower part
It is symmetrically arranged with the magnetic patch positioned at the convex stupefied underface, first flap valve is made of magnetic material, the movable end of the first flap valve
It can attract each other with the magnetic patch.
8. a kind of intake valve that can share water hammer pressure according to claim 5, it is characterised in that: second flap valve
The interior lower end on one end and the top is rotatablely connected, and the other end of the second flap valve is movable end, and the surface area of the second flap valve is greater than
The area of top lower ending opening.
9. a kind of intake valve that can share water hammer pressure according to claim 1, it is characterised in that: on first flap valve
It is fixed with the first rubber mat, is fixed with the second rubber mat on second flap valve.
10. a kind of intake valve that can share water hammer pressure according to claim 2, it is characterised in that: the water inlet pipe and
The nozzle of outlet pipe is fixed with connecting flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920284522.7U CN209622272U (en) | 2019-03-06 | 2019-03-06 | A kind of intake valve that can share water hammer pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920284522.7U CN209622272U (en) | 2019-03-06 | 2019-03-06 | A kind of intake valve that can share water hammer pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209622272U true CN209622272U (en) | 2019-11-12 |
Family
ID=68455953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920284522.7U Expired - Fee Related CN209622272U (en) | 2019-03-06 | 2019-03-06 | A kind of intake valve that can share water hammer pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209622272U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111156337A (en) * | 2019-12-30 | 2020-05-15 | 安徽舜禹水务股份有限公司 | Adjustable automatic pressure relief device for waterproof hammer |
| CN112212064A (en) * | 2020-09-18 | 2021-01-12 | 西安航天自动化股份有限公司 | Water outlet control valve, water supply control system and control method |
| CN114517866A (en) * | 2022-04-21 | 2022-05-20 | 艾肯（江苏）工业技术有限公司 | Pipeline is with multistage resistance to compression absorbing waterproof hammer device |
-
2019
- 2019-03-06 CN CN201920284522.7U patent/CN209622272U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111156337A (en) * | 2019-12-30 | 2020-05-15 | 安徽舜禹水务股份有限公司 | Adjustable automatic pressure relief device for waterproof hammer |
| CN112212064A (en) * | 2020-09-18 | 2021-01-12 | 西安航天自动化股份有限公司 | Water outlet control valve, water supply control system and control method |
| CN112212064B (en) * | 2020-09-18 | 2022-06-03 | 西安航天自动化股份有限公司 | Water outlet control valve, water supply control system and control method |
| CN114517866A (en) * | 2022-04-21 | 2022-05-20 | 艾肯（江苏）工业技术有限公司 | Pipeline is with multistage resistance to compression absorbing waterproof hammer device |
| CN114517866B (en) * | 2022-04-21 | 2022-07-01 | 艾肯（江苏）工业技术有限公司 | Pipeline is with multistage resistance to compression absorbing waterproof hammer device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191112 |