CN209710982U - A kind of water-saving drip irrigation valve - Google Patents
A kind of water-saving drip irrigation valve Download PDFInfo
- Publication number
- CN209710982U CN209710982U CN201920076333.0U CN201920076333U CN209710982U CN 209710982 U CN209710982 U CN 209710982U CN 201920076333 U CN201920076333 U CN 201920076333U CN 209710982 U CN209710982 U CN 209710982U
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- Prior art keywords
- drip irrigation
- face
- cylinder
- circular
- hole
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- Expired - Fee Related
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- 230000002262 irrigation Effects 0.000 title claims abstract description 52
- 238000003973 irrigation Methods 0.000 title claims abstract description 52
- 230000002093 peripheral effect Effects 0.000 claims abstract description 10
- 125000004122 cyclic group Chemical group 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims 1
- 230000007246 mechanism Effects 0.000 abstract description 23
- 230000001105 regulatory effect Effects 0.000 abstract description 22
- 230000008859 change Effects 0.000 abstract description 5
- 230000008635 plant growth Effects 0.000 abstract description 5
- 239000000203 mixture Substances 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241001365789 Oenanthe crocata Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000017260 vegetative to reproductive phase transition of meristem Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
Landscapes
- Sliding Valves (AREA)
Abstract
The utility model provides a kind of water-saving drip irrigation valve, including cylinder valve body and cone cell spool；The cylinder valve inner offers the cylindrical cavity at one, and the cylinder valve body top end face axis part offers the threaded communication hole being connected at one with the cylindrical cavity；It is fixedly connected to one piece of trapezoidal plate at left and right sides of the disk outer peripheral surface, and the trapezoidal plate top end face size is consistent with the trapezoidal block top end face size.The utility model drip irrigation valve is when not in use or after the adjusting amount of dripping, when the child getting in contact the utility model drip irrigation valve for having naughtiness, when rotating its regulating mechanism, it only can rotate the emulation regulating mechanism for covering cylinder and trapezoidal block composition, the amount of dripping regulating mechanism composed by the stud, rectangle stick and cone cell spool of adjustable the utility model drip irrigation valve amount of dripping will not be touched, to avoid the occurrence of causing the amount of dripping to change because of children's naughtiness rotation trickle irrigation innervalve assembly, influence plant growth.
Description
Technical field
The utility model belongs to drip irrigation valve technical field, more specifically, in particular to a kind of water-saving drip irrigation valve.
Background technique
Trickle irrigation is a kind of irrigation method of water conservation；It as its name suggests, is exactly with a small amount of water, even with drop by drop
Water irrigate, this irrigation method can not only save water, and be similarly able to satisfy the water requirement of crops.Trickle irrigation is derived from
Israel is passed to China in recent years.With the shortage of various regions water resource, trickle irrigation has obtained the extensive attention of people, is not only used for
Field irrigation, and be also used in urban afforestation.
Based on above-mentioned, the inventors discovered that, the amount of the dripping regulating mechanism of existing drip irrigation valve is easily touched by other people, if
By naughty child getting in contact to drip irrigation valve, the amount of the dripping regulating mechanism of drip irrigation valve is arbitrarily rotated, it will cause to have regulated
The amount of dripping change, such as the amount of dripping increase or close drip irrigation valve, to influence plant growth situation.
Then, in view of this, being studied improvement for existing structure and missing, a kind of water-saving drip irrigation valve is provided, with
Phase achievees the purpose that with more more practical value.
Utility model content
In order to solve the above-mentioned technical problem, the utility model provides a kind of water-saving drip irrigation valve, to solve existing drip irrigation valve
The amount of dripping regulating mechanism easily touched by other people, if arbitrarily rotating drip irrigation valve to drip irrigation valve by naughty child getting in contact
The amount of dripping regulating mechanism, it will cause the amount of dripping regulated to change, for example, the amount of dripping increase or close drop
Valve is filled, thus the problem of influencing plant growth situation.
The purpose and effect of the utility model water-saving drip irrigation valve, are reached by technological means in detail below:
A kind of water-saving drip irrigation valve, including cylinder valve body, cylindrical cavity, cyclic annular T-type sliding slot, threaded communication hole, drip irrigation pipe, circle
Through-hole A, connecting tube, circular through hole B, cylinder, trapezoidal block, round limiting slot, circular groove, circular through hole C, arc-shaped are covered
T-type sliding block, disk, trapezoidal plate, limited post, chamfering structure, stud, rectangle stick and cone cell spool；The cylinder valve inner
The cylindrical cavity at one is offered, and the cylinder valve body top end face axis part offers and is connected at one with the cylindrical cavity
The threaded communication hole；The cylinder valve body bottom face axis part is fixedly connected with the drip irrigation pipe, and the drop
It fills tube bottom end face axis part and offers the circular through hole A being connected at one with the cylindrical cavity；The barrel valve is external
Be fixedly connected to the connecting tube at left and right sides of circumferential surface, and two connecting tube axis positions offer at one with
The circular through hole B that the cylindrical cavity is connected；Threaded communication hole internal screw thread is connected with the stud, and described
Stud bottom face is fixedly connected with the cone cell spool；The stud top end face is fixedly connected with one piece of rectangular strip
Block, and the length of the rectangle stick is less than the diameter of the cylinder valve body；Barrel valve external circumferential surface top side position opens up
There is the ring-type T-type sliding slot at one, and the barrel valve external circumferential surface top side position is provided with one piece of coverage cylinder；It is described
It covers cylindrical tip face axis part and offers the circular groove at one；Circular groove inner end bottom surface axis part opens up
There is the circular through hole C at one, and the diameter of the circular through hole C is consistent with the diameter of the cylinder valve body；The circle
Through-hole C inner face circular array shape is fixedly connected with two pieces of arc-shaped T-type sliding blocks not being in contact, and two pieces of circles
Arcuation T-type sliding block is slidably connected in the cyclic annular T-type sliding slot；It is fixedly connected at left and right sides of the coverage cylindrical periphery face
There is one piece of trapezoidal block, and two pieces of trapezoidal block top end face adjacent top edge positions offer the round limit at one
Position slot；The coverage cylindrical tip face is provided with one piece of disk, and the diameter of the disk and the coverage body diameter
It is consistent；One piece of trapezoidal plate, and the trapezoidal plate top end face ruler are fixedly connected at left and right sides of the disk outer peripheral surface
It is very little consistent with the trapezoidal block top end face size.
Further, two pieces of trapezoidal plate bottom face adjacent top edge positions are fixedly connected to the limited post,
When the disk bottom face and the coverage cylindrical tip face fit, two limited posts are plugged on the circle at two
In limiting slot.
Further, when the disk bottom face and the coverage cylindrical tip face fit, the disk bottom face
It is not in contact with the rectangle stick.
Further, the diameter of the circular groove is greater than the diameter of the cylinder valve body.
Further, two pieces of trapezoidal plate bottom face top margin positions offer the chamfering structure at one.
The specifically used mode and effect of the present embodiment
Compared with prior art, the utility model has the following beneficial effects:
When not in use or after the adjusting amount of dripping, two limited posts are plugged on circle at two and limit the utility model drip irrigation valve
In the slot of position, so that disk bottom face fits with cylindrical tip face is covered, to hide the rectangular strip in circular groove
Block, therefore apparently see down outside, the coverage cylinder and the combination of trapezoidal block seem the regulating mechanism of cylinder valve body, therefore ought have naughtiness
Child getting in contact the utility model drip irrigation valve, when rotating its regulating mechanism, only can rotate cover cylinder and trapezoidal block composition
Regulating mechanism is emulated, the stud, rectangle stick and mitre valve of adjustable the utility model drip irrigation valve amount of dripping will not be touched
The regulating mechanism of the amount of dripping composed by core, to avoid causing the amount of dripping to be sent out because children's naughtiness rotates trickle irrigation innervalve assembly
Changing, the occurrence of influencing plant growth.
Detailed description of the invention
Fig. 1 is the axis view structural schematic diagram of the utility model.
Fig. 2 is the internal sectional structure schematic diagram of the utility model.
Fig. 3 is that disk removes state flowering structure schematic diagram in Fig. 1 of the utility model.
Fig. 4 is the cylinder valve inner schematic cross-sectional view of the utility model.
Fig. 5 is the disk bottom face axis view structural schematic diagram of the utility model.
Fig. 6 is the coverage cylindrical shaft view structural schematic diagram of the utility model.
Fig. 7 is the coverage cylindrical inside schematic cross-sectional view of the utility model.
In figure, the corresponding relationship of component names and accompanying drawing number are as follows:
1- cylinder valve body, 101- cylindrical cavity, 102- ring-type T-type sliding slot, 103- threaded communication hole, 2- drip irrigation pipe, 201- circle
Shape through-hole A, 3- connecting tube, 301- circular through hole B, 4- cover cylinder, the trapezoidal block of 401-, 402- circle limiting slot, 403- circle
Connected in star, 404- circular through hole C, 405- arc-shaped T-type sliding block, 5- disk, 501- trapezoidal plate, 502- limited post, 503- chamfering
Structure, 6- stud, 7- rectangle stick, 8- cone cell spool.
Specific embodiment
The embodiments of the present invention is described in further detail with reference to the accompanying drawings and examples.Following embodiment
For illustrating the utility model, but cannot be used to limit the scope of the utility model.
In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more；Term
The orientation of the instructions such as "upper", "lower", "left", "right", "inner", "outside", " front end ", " rear end ", " head ", " tail portion " or position are closed
System is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description, rather than
The device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot
It is construed as a limitation of the present invention.In addition, term " first ", " second ", " third " etc. are used for description purposes only, and cannot
It is interpreted as indication or suggestion relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, it can also be indirectly connected through an intermediary.For this
For the those of ordinary skill in field, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
Embodiment:
As shown in attached drawing 1 to attached drawing 7:
The utility model provides a kind of water-saving drip irrigation valve, including cylinder valve body 1, cylindrical cavity 101, cyclic annular T-type sliding slot 102,
Cylinder 4, trapezoidal block, circular through hole A201, connecting tube 3, circular through hole B301, are covered at drip irrigation pipe 2 in threaded communication hole 103
401, round limiting slot 402, circular groove 403, circular through hole C404, arc-shaped T-type sliding block 405, disk 5, trapezoidal plate 501,
Limited post 502, chamfering structure 503, stud 6, rectangle stick 7 and cone cell spool 8；It is offered at one inside the cylinder valve body 1
The cylindrical cavity 101, and 1 top end face axis part of the cylinder valve body offers and is connected with the cylindrical cavity 101 at one
The threaded communication hole 103；The 1 bottom face axis part of cylinder valve body is fixedly connected with the drip irrigation pipe 2, and described
2 bottom face axis part of drip irrigation pipe offers the circular through hole A201 being connected at one with the cylindrical cavity 101；The circle
It is fixedly connected to the connecting tube 3 at left and right sides of 1 outer peripheral surface of column valve body, and two 3 axis positions of connecting tube are equal
Offer the circular through hole B301 being connected at one with the cylindrical cavity 101；103 internal screw thread of the threaded communication hole connection
There is the stud 6, and 6 bottom face of the stud is fixedly connected with the cone cell spool 8；6 top end face of stud
It is fixedly connected with one piece of rectangle stick 7, and the length of the rectangle stick 7 is less than the diameter of the cylinder valve body 1；It is described
1 outer peripheral surface top side position of cylinder valve body offers the ring-type T-type sliding slot 102 at one, and 1 outer peripheral surface top side of the cylinder valve body
Position is provided with one piece of coverage cylinder 4；The 4 top end face axis part of coverage cylinder offers the circular groove at one
403；The 403 inner end bottom surface axis part of circular groove offers the circular through hole C404 at one, and the circular through hole
The diameter of C404 is consistent with the diameter of the cylinder valve body 1；The circular through hole C404 inner face circular array shape is fixed
Two pieces of arc-shaped T-type sliding blocks 405 not being in contact are connected with, and two pieces of arc-shaped T-type sliding blocks 405 are slidably connected
In the cyclic annular T-type sliding slot 102；One piece is fixedly connected at left and right sides of 4 outer peripheral surface of coverage cylinder described trapezoidal to pull
Block 401, and two pieces of trapezoidal 401 top end face adjacent top edge positions of block offer the circle limiting slot 402 at one；Institute
It states coverage 4 top end face of cylinder and is provided with one piece of disk 5, and the diameter of the disk 5 and the 4 diameter phase one of coverage cylinder
It causes；One piece of trapezoidal plate 501, and 501 top end face of the trapezoidal plate are fixedly connected at left and right sides of 5 outer peripheral surface of disk
Size is consistent with the trapezoidal 401 top end face size of block.
Wherein, two pieces of 501 bottom face adjacent top edge positions of trapezoidal plate are fixedly connected to the limited post
502, when 5 bottom face of disk fits with 4 top end face of coverage cylinder, two limited posts 502 are plugged on two
Locate to hide the rectangle stick in the circular groove 403 by the disk 5 in the round limiting slot 402
7, therefore apparently see down outside, this is described to cover cylinder 4 and the trapezoidal block 401 combination seems the adjusting of the cylinder valve body 1
Mechanism.
Wherein, when 5 bottom face of disk and 4 top end face of coverage cylinder fit, 5 bottom face of disk is not
It is in contact with the rectangle stick 7, therefore howsoever rotates the emulation of the coverage cylinder 4 and the trapezoidal block 401 composition
Regulating mechanism does not all interfere with the amount of dripping tune composed by the stud 6, the rectangle stick 7 and the cone cell spool 8
Save mechanism.
Wherein, the diameter of the circular groove 403 is greater than the diameter of the cylinder valve body 1, therefore howsoever described in rotation
The emulation regulating mechanism for covering cylinder 4 and the trapezoidal block 401 composition, does not all interfere with the stud 6, the rectangle
The amount of dripping regulating mechanism composed by stick 7 and the cone cell spool 8.
Wherein, two pieces of 501 bottom face top margin positions of trapezoidal plate offer the chamfering structure 503 at one, therefore work as
When user needs to adjust this drip irrigation valve amount of dripping, it can be convenient for by 503 position of chamfering structure described in this by the limited post 502
Quickly extracted out of described round limiting slot 402.
The specifically used mode and effect of the present embodiment:
When routine use, the connecting tube 3 of 1 left and right ends of cylinder valve body is connect on the pipeline of system pipe network, logical by circle
Hole B301 is the water supply of cylindrical cavity 101, can be by turning rectangle stick 7, so that stud 6 is threadingly after water enters cylindrical cavity 101
Intercommunicating pore 103 moves up and down, so that cone cell spool 8 be driven to move up and down together, obtains the water section of crossing of circular through hole A201
Change, has served as water section and changed, the amount of dripping also changes therewith；
For the utility model drip irrigation valve when not in use or after the adjusting amount of dripping, two limited posts 502 are plugged on circle at two
In shape limiting slot 402, so that 5 bottom face of disk fits with 4 top end face of cylinder is covered, to hide positioned at circular groove
Rectangle stick 7 in 403, therefore apparently see down outside, the coverage cylinder 4 and the combination of trapezoidal block 401 seem the tune of cylinder valve body 1
Mechanism is saved, therefore when there is naughty child getting in contact the utility model drip irrigation valve, when rotating its regulating mechanism, it only can rotate coverage circle
The emulation regulating mechanism that column 4 and trapezoidal block 401 form, will not touch adjustable the utility model drip irrigation valve amount of dripping
The amount of dripping regulating mechanism composed by stud 6, rectangle stick 7 and cone cell spool 8, to avoid rotating drip irrigation valve because of children's naughtiness
Regulating mechanism and the occurrence of cause the amount of dripping to change, influence plant growth；
Further, the length of rectangle stick 7 is less than the diameter of cylinder valve body 1, and the diameter of circular groove 403 is greater than circle
The diameter of column valve body 1, and when 5 bottom face of disk and cover 4 top end face of cylinder fit when, 5 bottom face of disk not with rectangle
Stick 7 is in contact, therefore the emulation regulating mechanism that howsoever cylinder 4 is covered in rotation and trapezoidal block 401 forms, all will not shadow
It rings to the amount of dripping regulating mechanism composed by stud 6, rectangle stick 7 and cone cell spool 8；
Further, two pieces of 501 bottom face top margin positions of trapezoidal plate offer chamfering structure 503 at one, therefore when use
When person needs to adjust this drip irrigation valve amount of dripping, it can be convenient for quickly limiting limited post 502 from circle by 503 position of chamfering structure
It is extracted in the slot 402 of position.
The embodiments of the present invention are given for the purpose of illustration and description, and are not exhaustively or to incite somebody to action
The utility model is limited to disclosed form.Many modifications and variations are aobvious and easy for the ordinary skill in the art
See.Embodiment was chosen and described in order to better illustrate the principle and practical application of the utility model, and makes this field
Those of ordinary skill it will be appreciated that the utility model to designing various embodiments suitable for specific applications with various modifications.
Claims (5)
1. a kind of water-saving drip irrigation valve, it is characterised in that: the water-saving drip irrigation valve include cylinder valve body, cylindrical cavity, cyclic annular T-type sliding slot,
Cylinder, trapezoidal block, round limiting slot, circle, circular through hole A, connecting tube, circular through hole B, are covered at drip irrigation pipe in threaded communication hole
Connected in star, circular through hole C, arc-shaped T-type sliding block, disk, trapezoidal plate, limited post, chamfering structure, stud, rectangle stick and cone
Shape spool；The cylinder valve inner offers the cylindrical cavity at one, and the cylinder valve body top end face axis part opens up
There is the threaded communication hole being connected at one with the cylindrical cavity；The cylinder valve body bottom face axis part is fixedly connected with
A piece drip irrigation pipe, and the drip irrigation pipe bottom face axis part offers the circle being connected at one with the cylindrical cavity
Shape through-hole A；The connecting tube, and two connecting tubes are fixedly connected at left and right sides of the external circumferential surface of barrel valve
Axis position offers the circular through hole B being connected at one with the cylindrical cavity；Threaded communication hole internal screw thread connects
It is connected to the stud, and the stud bottom face is fixedly connected with the cone cell spool；The stud top end face is solid
Surely it is connected with one piece of rectangle stick, and the length of the rectangle stick is less than the diameter of the cylinder valve body；The cylinder
Valve body outer peripheral surface top side position offers the ring-type T-type sliding slot at one, and the barrel valve external circumferential surface top side position is arranged
There is one piece of coverage cylinder；Coverage cylindrical tip face axis part offers the circular groove at one；The circle
Groove inner end bottom surface axis part offers the circular through hole C at one, and the diameter of the circular through hole C and the barrel valve
The diameter of body is consistent；The circular through hole C inner face circular array shape is fixedly connected with two pieces of circles not being in contact
Arcuation T-type sliding block, and two pieces of arc-shaped T-type sliding blocks are slidably connected in the cyclic annular T-type sliding slot；The coverage cylinder
One piece of trapezoidal block, and two pieces of trapezoidal block top end face adjacent top edge are fixedly connected at left and right sides of outer peripheral surface
Position offers the circle limiting slot at one；The coverage cylindrical tip face is provided with one piece of disk, and the disk
Diameter it is consistent with the coverage body diameter；Be fixedly connected at left and right sides of the disk outer peripheral surface one piece it is described trapezoidal
Plate, and the trapezoidal plate top end face size is consistent with the trapezoidal block top end face size.
2. water-saving drip irrigation valve as described in claim 1, it is characterised in that: two pieces of trapezoidal plate bottom face adjacent top edge positions are equal
It is fixedly connected with the limited post, when the disk bottom face fits with the coverage cylindrical tip face, two institutes
Limited post is stated to be plugged at two in the circle limiting slot.
3. water-saving drip irrigation valve as described in claim 1, it is characterised in that: when the disk bottom face and the coverage cylindrical tip
When face fits, the disk bottom face is not in contact with the rectangle stick.
4. water-saving drip irrigation valve as described in claim 1, it is characterised in that: the diameter of the circular groove is greater than the cylinder valve body
Diameter.
5. water-saving drip irrigation valve as described in claim 1, it is characterised in that: two pieces of trapezoidal plate bottom face top margin positions open up
There is the chamfering structure at one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920076333.0U CN209710982U (en) | 2019-01-18 | 2019-01-18 | A kind of water-saving drip irrigation valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920076333.0U CN209710982U (en) | 2019-01-18 | 2019-01-18 | A kind of water-saving drip irrigation valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209710982U true CN209710982U (en) | 2019-12-03 |
Family
ID=68680210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920076333.0U Expired - Fee Related CN209710982U (en) | 2019-01-18 | 2019-01-18 | A kind of water-saving drip irrigation valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209710982U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113331027A (en) * | 2021-06-11 | 2021-09-03 | 渭南绿盛农业科技有限责任公司 | Drip irrigation device for grape planting and use method thereof |
| CN116906616A (en) * | 2023-09-06 | 2023-10-20 | 福建爱的电器有限公司 | Antifreezing control valve |
-
2019
- 2019-01-18 CN CN201920076333.0U patent/CN209710982U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113331027A (en) * | 2021-06-11 | 2021-09-03 | 渭南绿盛农业科技有限责任公司 | Drip irrigation device for grape planting and use method thereof |
| CN113331027B (en) * | 2021-06-11 | 2024-05-03 | 渭南绿盛农业科技有限责任公司 | Drip irrigation device for grape planting and application method thereof |
| CN116906616A (en) * | 2023-09-06 | 2023-10-20 | 福建爱的电器有限公司 | Antifreezing control valve |
| CN116906616B (en) * | 2023-09-06 | 2023-11-28 | 福建爱的电器有限公司 | Antifreezing control valve |
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| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20191203 |