CN112173005B - Water blocking tank discharge valve - Google Patents
Water blocking tank discharge valve Download PDFInfo
- Publication number
- CN112173005B CN112173005B CN202011012369.6A CN202011012369A CN112173005B CN 112173005 B CN112173005 B CN 112173005B CN 202011012369 A CN202011012369 A CN 202011012369A CN 112173005 B CN112173005 B CN 112173005B
- Authority
- CN
- China
- Prior art keywords
- valve
- valve plate
- plate
- frame
- fastening piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B13/00—Conduits for emptying or ballasting; Self-bailing equipment; Scuppers
-
- 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
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/204—Keeping clear the surface of open water from oil spills
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Lift Valve (AREA)
- Valve Housings (AREA)
Abstract
The invention relates to the technical field of a drainage opening and closing device of a water retaining groove of a ship deck, and discloses a water retaining groove discharge valve, which comprises: the valve frame is suitable for being fixedly connected with the oil containment boom, and a U-shaped water outlet is formed in the lower end of the valve frame; the water blocking groove discharge valve comprises a valve frame fixedly connected to an oil fence, a U-shaped water outlet is formed in the lower end of the valve frame, water in the water blocking groove can be emptied through the U-shaped water outlet, the U-shaped water outlet is blocked through the valve plate after accumulated water is emptied, and the first limiting assemblies arranged on the left side and the right side of the valve plate and the second limiting assemblies arranged above the valve plate can apply pressure to the valve plate, so that the valve plate has a good sealing effect on the U-shaped water outlet, and oil leakage is avoided.
Description
Technical Field
The invention relates to the technical field of drainage opening and closing devices of ship deck water blocking tanks, in particular to a water blocking tank discharge valve.
Background
An oil containment boom is arranged on a deck of an existing ship, and the oil containment boom and the deck enclose to form a water blocking tank, so that leakage oil overflowing everywhere due to faults of equipment or machine connecting pipelines is prevented, the sea is polluted, and generally, the water blocking tank does not contain oil when the equipment is normal, and the water blocking tank is full of seawater due to raining or upsurfing instead. In order to drain water, a threaded cock is usually arranged on the oil containment boom and used for draining water, but when the threaded cock seat is welded with the oil containment boom, a weld joint height must be reserved, so that water in the water retaining tank cannot be drained completely, and the experience of ship workers is poor.
Disclosure of Invention
In view of this, the invention aims to provide a water blocking tank discharge valve to solve the technical problems that water in the existing water blocking tank cannot be drained completely and staff of a ship experience is poor.
In order to solve the above technical problem, the present invention provides a drain valve of a water blocking tank, comprising: the valve frame is suitable for being fixedly connected with the oil containment boom, and a U-shaped water outlet is formed in the lower end of the valve frame; the valve plate is attached to the U-shaped water outlet and used for plugging the U-shaped water outlet; the first limiting assemblies are arranged on the left side and the right side of the valve plate, the valve plate is clamped in the first limiting assemblies, and the first limiting assemblies are used for applying pressure to the valve plate to enable the valve plate to be tightly attached to the valve frame; and the second limiting assembly is arranged above the valve plate and used for applying pressure to the valve plate to enable the valve plate to be tightly attached to a deck.
Optionally, the first limiting assembly comprises a stud, a clamping seat and a first screwing piece, the stud, the clamping seat and the first screwing piece are arranged on the valve frame, the side edge of the valve plate is suitable for being clamped in the clamping seat, the first screwing piece penetrates through the clamping seat and is fixedly connected with the stud, and the first screwing piece is used for realizing the pressing or loosening of the valve plate by the clamping seat through rotation.
Optionally, a notch extending in the vertical direction is formed in one side, close to the valve plate, of the clamping seat, and the valve plate is suitable for being clamped in the notch.
Optionally, the second limiting assembly comprises a fixing seat, a pressing plate and a second screwing piece, the fixing seat, the pressing plate and the second screwing piece are arranged on the valve frame, the pressing plate is suitable for being arranged above the valve plate, the second screwing piece penetrates through the pressing plate and the fixing seat and is fixedly connected with the fixing seat, and the second screwing piece is rotated to compress or loosen the valve plate.
Optionally, the pressing plate includes a pressing head portion and a connecting portion, the pressing head portion is fixedly connected with the connecting portion, the connecting portion has a screw hole matched with the second screwing piece, the pressing head portion is suitable for abutting against the valve plate, and the pressing head portion is arranged in a protruding mode downwards relative to the connecting portion.
Optionally, the valve further comprises a groove arranged around the U-shaped water discharge port, a sealing ring protruding out of a notch of the groove is arranged in the groove, and the sealing ring is located between the valve plate and the valve frame.
Optionally, the lower terminal surface of valve plate is provided with the opening draw-in groove down, the sealing washer is suitable for the inlay to be established in the draw-in groove.
Optionally, the valve plate includes a valve plate body and a combined plate disposed at a lower end of the valve plate body, and the combined plate and the valve plate body enclose to form the clamping groove.
Optionally, the first tightening member and the second tightening member are each wing nuts.
Compared with the prior art, the embodiment of the invention provides the drain valve of the water blocking tank, which has the beneficial effects that:
the water blocking groove discharge valve comprises a valve frame fixedly connected to an oil fence, a U-shaped water discharge opening is formed in the lower end of the valve frame, water in the water blocking groove can be drained through the U-shaped water discharge opening, the U-shaped water discharge opening is sealed through a valve plate after accumulated water is drained, and the valve plate can be pressed by first limiting assemblies arranged on the left side and the right side of the valve plate and a second limiting assembly arranged above the valve plate, so that the valve plate has a good sealing effect on the U-shaped water discharge opening, and oil leakage is avoided.
Drawings
FIG. 1 is a front view of a water dam sink drain valve according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of a drain valve of a water retaining trough in accordance with an embodiment of the present invention;
FIG. 3 is a schematic illustration of the construction of the valve plate of the water dam tank bleed valve in accordance with an embodiment of the present invention;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
FIG. 5 is a cross-sectional view B-B of FIG. 3;
fig. 6 is a schematic structural view of a valve cage of a water dam sink drain valve according to an embodiment of the present invention.
In the figure, 100, an oil containment boom, 200, a deck, 1, a valve frame, 2, a U-shaped water outlet, 3, a valve plate, 31, a valve plate body, 32, a combined plate, 4, a first limiting component, 41, a stud, 42, a clamping seat, 43, a first fastening piece, 5, a second limiting component, 51, a fixed seat, 52, a pressing plate, 521, a pressure head part, 522, a connecting part, 53, a second fastening piece, 6, a sealing ring, 7 and a clamping groove are arranged.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
An XYZ coordinate system is provided herein wherein a forward direction of the X axis represents the right direction, a reverse direction of the X axis represents the left direction, a forward direction of the Y axis represents the upper direction, a reverse direction of the Y axis represents the lower direction, a forward direction of the Z axis represents the front direction, and a reverse direction of the Z axis represents the rear direction.
In addition, the following description will be briefly made with reference to the orientation: the following directional or positional relationships, as indicated in the context of "front", "rear", "upper", "lower", "left", "right", etc., with respect to each structural member, are intended to refer to the orientation or positional relationship as shown in the drawings; these positional relationships are merely for convenience and simplicity of description and do not indicate or imply that the device referred to must have a particular orientation, be constructed and operated in a particular orientation and therefore should not be construed as limiting the invention.
If there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
As shown in fig. 1 and 6, an embodiment of the present invention provides a water blocking groove drain valve, including: the valve frame 1 is of a plate-shaped structure, specifically, the valve frame is made of a steel plate with the thickness of 8mm, the external dimension is 180mm multiplied by 100mm multiplied by 8mm, and a U-shaped notch is arranged at the lower middle position of the valve frame and is used as a water outlet. The valve frame 1 is adapted to be fixedly connected to the oil containment boom 100, in particular, the valve frame is adapted to be welded to the oil containment boom, so that the valve frame forms a part of the oil containment boom. U type outlet 2 has been seted up to the lower extreme of valve frame 1, can understand ground, and the opening in U type outlet is laminated in the deck to can block the ponding evacuation in the basin, improve staff's on the boats and ships operational environment, improve and use experience. The valve plate 3 is attached to the U-shaped water discharge port 2, and the valve plate 3 is used for plugging the U-shaped water discharge port 2; after accumulated water is emptied, the valve plate can plug the U-shaped water outlet, so that the function of blocking oil in the water blocking groove is realized. The valve plate 3 is clamped in the first limiting assemblies 4, the first limiting assemblies 4 are used for applying pressure to the valve plate 3 to enable the valve plate 3 to be tightly attached to the valve frame 1, and the first limiting assemblies enable the valve plate to seal the U-shaped water outlet in the front and back directions. Set up in the spacing subassembly of second 5 above the valve plate 3, the spacing subassembly of second sets up to two, sets up the top in the valve plate left and right sides respectively to be convenient for to the balanced application of force of valve plate in vertical direction, make between valve plate and the deck sealed good, avoid oil leakage. The second limiting assembly 5 is used for applying pressure to the valve plate 3 to enable the valve plate to be tightly attached to the deck 200, the second limiting assembly seals between the valve plate and the deck in the vertical direction, and the arrangement of the first limiting assembly and the second limiting assembly ensures that the valve plate has a better sealing effect on the U-shaped water outlet, so that oil leakage is avoided. The valve plate is used for being matched with the valve frame to form a gate type valve piece.
As shown in fig. 2, the first limiting component 4 includes a stud 41, a clamping seat 42 and a first fastening member 43, which are disposed on the valve frame 1, the stud and the valve frame are integrally formed, so that the connection strength is high, and when the first fastening member is screwed to press the clamping seat against the valve plate, the stud can provide sufficient support. The side of the valve plate 3 is suitable for being clamped in the clamping seat 42, specifically, a notch extending in the vertical direction is formed in one side, close to the valve plate 3, of the clamping seat 42, the valve plate 3 is suitable for being clamped in the notch, the valve plate is enabled to be wholly attached to the valve frame by applying pressure to the left side edge and the right side edge of the valve plate, and the valve plate seals the U-shaped water outlet in the valve frame. The first screwing piece 43 penetrates through the clamping seat 42 and is fixedly connected with the stud 41, the first screwing piece 43 is rotated to press or loosen the valve plate 3 through the clamping seat 42, when water needs to be drained, the first screwing piece is rotated to loosen the valve plate, when oil needs to be blocked, the first screwing piece is rotated to press the valve plate through the clamping seat, and the valve plate seals the U-shaped water outlet.
As shown in fig. 1, the second position-limiting assembly 5 includes a fixing seat 51, a pressing plate 52 and a second fastening member 53, which are disposed on the valve frame 1, and the fixing seat and the valve frame are integrally formed, so that the valve frame has high connection strength. When the second screwing piece enables the pressing plate to be pressed on the valve plate through screwing, the fixed seat can provide enough support. The clamp plate 52 is suitable for the setting to be in the top of valve plate 3, second spiral shell piece 53 has passed through the clamp plate 52 with fixing base 51 fixed connection, second spiral shell piece 53 is through rotating the realization the clamp plate 52 is right valve plate 3 compress tightly or loosen, and when needs carried out the drainage, the tight piece of second spiral shell rotates and realizes the clamp plate to the unclamping of valve plate, and when needs blocked oil, the tight piece rotation of second spiral shell made the clamp plate to compress tightly the valve plate, and the lower extreme and the deck sealing connection of valve plate avoid oil leakage.
As shown in fig. 2, the pressure plate 52 includes a head portion 521 and a connecting portion 522, the head portion 521 and the connecting portion 522 are fixedly connected, specifically, the head portion and the connecting portion are integrally formed, the connecting portion 522 has a screw hole adapted to the second fastening member 53, the head portion 521 is adapted to abut against the valve plate 3, the head portion 521 is disposed to protrude downward relative to the connecting portion 522, and the head portion presses the valve plate simultaneously when the second fastening member is tightened to connect the connecting portion and the fixing base. Preferably, in this embodiment, the working surface of the pressure head portion pressing against the valve plate is an inclined surface, so as to achieve a better pressing effect.
As shown in fig. 1 and 4, the water retaining tank discharge valve further comprises a groove arranged around the U-shaped water discharge port 2, a sealing ring 6 protruding out of the groove opening of the groove is arranged in the groove, the sealing ring 6 is positioned between the valve plate 3 and the valve frame 1, and the sealing effect between the valve plate and the valve frame is better realized by arranging the sealing ring between the valve plate and the valve frame.
As shown in fig. 3 and 5, a clamping groove 7 with a downward opening is formed in the lower end surface of the valve plate 3, the sealing ring 6 is suitable for being embedded in the clamping groove 7, and a better sealing effect between the valve plate and the deck is achieved by arranging the sealing ring between the valve plate and the deck.
As shown in fig. 1 and 5, the valve plate 3 includes a valve plate body 31 and a combination plate 32 disposed at a lower end of the valve plate body 31, and the combination plate is fixedly connected to the valve plate body by bolts. The combined plate 32 and the valve plate body 31 are enclosed to form the clamping groove 7, the machining process is simple, and the production cost is reduced.
As shown in fig. 1 and 2, the first fastening member 43 and the second fastening member 53 are wing nuts, which facilitate manual tightening or loosening of the first fastening member and the second fastening member.
Specifically, during the use, through screwing first spiral shell spare and the tight cassette of second spiral shell spare fastening cassette and clamp plate, realize that the valve plate is sealed to the U-shaped outlet, during the discharge, through loosening first spiral shell spare and the tight cassette of second spiral shell spare pine of spiral shell and clamp plate, use second spiral shell spare to be the rotatory clamp plate of axle again, make the clamp plate break away from the valve plate, just can lift the valve plate in the cassette and spill U type outlet completion discharge.
Through this kind of water blocking tank bleeder valve, very convenient solution water blocking tank release unclean, the problem of depositing water, this valve simple structure, the preparation is easy, installation convenient to use.
To sum up, the water blocking tank discharge valve provided by the embodiment of the invention comprises a valve frame fixedly connected to an oil fence, wherein a U-shaped water outlet is formed in the lower end of the valve frame, water in the water blocking tank can be drained through the U-shaped water outlet, after accumulated water is drained, the U-shaped water outlet is blocked through a valve plate, the valve plate can be pressed by first limiting assemblies arranged on the left side and the right side of the valve plate and a second limiting assembly arranged above the valve plate, so that the valve plate has a good sealing effect on the U-shaped water outlet, and oil leakage is avoided.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (6)
1. A water dam drain valve comprising:
the oil containment boom comprises a valve frame (1), wherein the valve frame (1) is suitable for being fixedly connected with an oil containment boom (100), and a U-shaped water outlet (2) is formed in the lower end of the valve frame (1);
the valve plate (3) is attached to the U-shaped water outlet (2), and the valve plate (3) is used for plugging the U-shaped water outlet (2);
the valve plate (3) is clamped in the first limiting assembly (4), and the first limiting assembly (4) is used for applying pressure to the valve plate (3) to enable the valve plate (3) to be tightly attached to the valve frame (1);
the second limiting assembly (5) is arranged above the valve plate (3), and the second limiting assembly (5) is used for applying pressure to the valve plate (3) to enable the valve plate to be tightly attached to a deck (200);
the first limiting assembly (4) comprises a stud (41), a clamping seat (42) and a first fastening piece (43) which are arranged on the valve frame (1), the side edge of the valve plate (3) is suitable for being clamped in the clamping seat (42), the first fastening piece (43) penetrates through the clamping seat (42) and is fixedly connected with the stud (41), and the first fastening piece (43) realizes the pressing or loosening of the valve plate (3) by the clamping seat (42) through rotation; the second limiting assembly (5) comprises a fixed seat (51), a pressure plate (52) and a second fastening piece (53), wherein the fixed seat (51), the pressure plate (52) and the second fastening piece (53) are arranged on the valve frame (1), the pressure plate (52) is suitable for being arranged above the valve plate (3), the second fastening piece (53) penetrates through the pressure plate (52) and is fixedly connected with the fixed seat (51), and the second fastening piece (53) realizes the pressing or loosening of the valve plate (3) by the pressure plate (52) through rotation; the pressure plate (52) comprises a pressure head part (521) and a connecting part (522), the pressure head part (521) is fixedly connected with the connecting part (522), the connecting part (522) is provided with a screw hole matched with the second fastening piece (53), the pressure head part (521) is suitable for being abutted against the valve plate (3), and the pressure head part (521) is arranged in a downward protruding mode relative to the connecting part (522).
2. The gutter discharge valve according to claim 1, characterised in that the side of the seat (42) close to the valve plate (3) is provided with a vertically extending notch in which the valve plate (3) is adapted to snap fit.
3. The water trap bleeder valve according to claim 1, further comprising a groove arranged at the periphery of said U-shaped drain opening (2), wherein a sealing ring (6) protruding from the notch of said groove is arranged in said groove, said sealing ring (6) being positioned between said valve plate (3) and said valve frame (1).
4. The water-stop tank bleed valve according to claim 1, characterised in that the lower end face of the valve plate (3) is provided with a clamping groove (7) with a downward opening, the sealing ring (6) being suitable for being embedded in the clamping groove (7).
5. The gutter discharge valve according to claim 4, characterised in that said valve plate (3) comprises a valve plate body (31) and a combined plate (32) arranged at the lower end of said valve plate body (31), said combined plate (32) and said valve plate body (31) enclosing to form said clamping groove (7).
6. The water dam discharge valve of claim 1 wherein said first fastening member (43) and said second fastening member (53) are wing nuts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011012369.6A CN112173005B (en) | 2020-09-23 | 2020-09-23 | Water blocking tank discharge valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011012369.6A CN112173005B (en) | 2020-09-23 | 2020-09-23 | Water blocking tank discharge valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112173005A CN112173005A (en) | 2021-01-05 |
| CN112173005B true CN112173005B (en) | 2022-07-05 |
Family
ID=73956215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011012369.6A Active CN112173005B (en) | 2020-09-23 | 2020-09-23 | Water blocking tank discharge valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112173005B (en) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11255180A (en) * | 1998-03-13 | 1999-09-21 | Niikura Kogyo Kk | Closure device for deck drain port or the like |
| KR20050086096A (en) * | 2004-02-25 | 2005-08-30 | 주식회사 두양 | Board of block sea water for a vessel sea chest |
| US7451717B1 (en) * | 2004-05-21 | 2008-11-18 | Conocophillips Company | Systems and processes for covering openings of marine vessel hulls |
| CN202345883U (en) * | 2011-10-22 | 2012-07-25 | 李志宏 | Marine drained-water rushing blocking device |
| KR101454377B1 (en) * | 2012-07-25 | 2014-10-23 | 삼성중공업 주식회사 | Drain plug of coaming unit |
| CN209064303U (en) * | 2018-09-28 | 2019-07-05 | 中船黄埔文冲船舶有限公司 | A kind of drainage plug peculiar to vessel |
| CN110015379A (en) * | 2019-04-24 | 2019-07-16 | 上海外高桥造船有限公司 | Drain plug device and discharge outlet open method and method for closing using it |
| CN110159865A (en) * | 2019-06-06 | 2019-08-23 | 上海外高桥造船有限公司 | Plugging device and oil fence iron |
| CN110254615A (en) * | 2019-06-27 | 2019-09-20 | 广船国际有限公司 | A kind of kingston valve changes method and applies the closure tooling at it under water |
-
2020
- 2020-09-23 CN CN202011012369.6A patent/CN112173005B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112173005A (en) | 2021-01-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112173005B (en) | Water blocking tank discharge valve | |
| CN213512512U (en) | Sealing connection device for drainage pipelines | |
| CN215408579U (en) | Oil production wellhead oil extraction device convenient to install | |
| CN105730614A (en) | Sealing device and test method for watertight test of bottom of ship | |
| CN213109687U (en) | Ship deck water leakage port | |
| CN213954485U (en) | Gate valve body with good sealing effect | |
| JP5740205B2 (en) | Saddle faucet | |
| CN113187967A (en) | Connecting piece for high-sealing drainage pipe fitting | |
| CN209841567U (en) | Hydraulic test block valve | |
| CN216643430U (en) | Stainless steel clamp with locking function | |
| CN217760207U (en) | Anti-leakage hole plugging structure | |
| CN215795974U (en) | Novel safe type has glass steel storage tank of secondary prevention of seepage function | |
| CN218431608U (en) | Quick drainage device of deck mouth of a river | |
| CN112107897B (en) | Corrosion-resistant covering device additionally arranged on retaining plate and thrust plate of filter press | |
| CN216520129U (en) | Anti-burst safety valve for chemical industry | |
| CN217234724U (en) | Convenient to use's jar body presss from both sides cover interface | |
| CN217153183U (en) | Pipeline relief valve that leakproofness is strong | |
| CN210461349U (en) | Waterproof nut | |
| CN212156154U (en) | Pipeline connecting device for hydraulic engineering | |
| CN213512648U (en) | Chemical pipeline is with leaking stoppage ware of being convenient for installation fixed | |
| CN212034283U (en) | Loudspeaker mounting structure of leak protection water | |
| CN209959959U (en) | Valve pipe fitting connection sealing structure | |
| CN217088519U (en) | Water-cooling plate | |
| CN211976262U (en) | Sealing blind plate flange | |
| CN213954449U (en) | Deck plane valve with non-return device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20210105 Assignee: GUANGZHOU WENCHONG SHIPYARD Co.,Ltd. Assignor: CSSC HUANGPU WENCHONG SHIPBUILDING Co.,Ltd. Contract record no.: X2023980037695 Denomination of invention: A drainage valve for a water retention tank Granted publication date: 20220705 License type: Common License Record date: 20230706 |
|
| EE01 | Entry into force of recordation of patent licensing contract |