CN114768155A - Fire control shower nozzle of self-interacting water spray volume - Google Patents
Fire control shower nozzle of self-interacting water spray volume Download PDFInfo
- Publication number
- CN114768155A CN114768155A CN202210522166.4A CN202210522166A CN114768155A CN 114768155 A CN114768155 A CN 114768155A CN 202210522166 A CN202210522166 A CN 202210522166A CN 114768155 A CN114768155 A CN 114768155A
- Authority
- CN
- China
- Prior art keywords
- water
- spray head
- main body
- head main
- shower nozzle
- 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.)
- Granted
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
- A62C31/03—Nozzles specially adapted for fire-extinguishing adjustable, e.g. from spray to jet or vice versa
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/28—Accessories for delivery devices, e.g. supports
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Nozzles (AREA)
Abstract
The invention provides a fire control spray head capable of automatically adjusting water spraying quantity, which comprises a water pipe and a spray head, wherein the water pipe is used for conveying water with constant instantaneous flow, the spray head is communicated with the water pipe, the opening of the spray head is gradually reduced, the water pipe is used for conveying the water with the constant instantaneous flow, a water quantity driving device drives a water quantity flap to rotate so as to enable the water with the preset instantaneous flow to be controlled by the water quantity flap to pass through a spray head main body and be sprayed out through the spray head, when the included angle between the water quantity flap and the axis of the spray head main body is larger than 0 degree and smaller than or equal to 45 degrees, a pressurizing and stable driving device drives a moving ball to move for a preset distance along the direction close to the spray head main body so as to improve the stability when the water passes through the spray head, when the included angle between the water quantity flap and the axis of the spray head main body is larger than 45 degrees and smaller than or equal to 90 degrees, the pressurizing and stable driving device drives the moving ball to move for the preset distance along the direction far away from the spray head main body so as to improve the water spraying pressure of the spray head, is beneficial to the fire control of the fire control nozzle.
Description
Technical Field
The invention relates to the technical field of fire-fighting nozzles, in particular to a fire-fighting nozzle capable of automatically adjusting water spraying quantity.
Background
The spray head is a main part which is manufactured by using stainless steel or brass and is used for equipment such as spraying, atomizing, oil spraying, sand blasting and the like, and is widely applied to different fields, such as cleaning equipment, paint spraying, cooling, fire prevention and other different places.
The existing fire-fighting nozzle comprises a water pipe for conveying water with constant instantaneous flow, a nozzle which is communicated with the water pipe and has a gradually reduced opening, a nozzle main body which is communicated between the water pipe and the nozzle, a water flap which is rotatably arranged in the nozzle main body and is used for controlling the water with preset instantaneous flow to pass through, and a water quantity driving device which is arranged on the nozzle main body and is used for driving the water flap to rotate so as to control the water with preset instantaneous flow to pass through.
The water pipe conveys water with constant instantaneous flow, and the water quantity driving device drives the water quantity flap to rotate so that the water with the preset instantaneous flow controlled by the water quantity flap passes through the nozzle body and is sprayed out through the nozzle.
Although the above can solve the corresponding technical problems, certain disadvantages still exist:
the water pipe conveys water with constant instantaneous flow, the water quantity driving device drives the water quantity flap to rotate, the stability of the water passing through the spray head cannot be improved when the included angle between the water quantity flap and the axis of the spray head main body is larger than 0 degree and smaller than or equal to 45 degrees, the water spray pressure of the spray head cannot be improved when the included angle between the water quantity flap and the axis of the spray head main body is larger than 45 degrees and smaller than or equal to 90 degrees, and the fire control use of the fire control spray head is not facilitated.
Disclosure of Invention
The invention aims to provide a fire fighting spray head capable of automatically adjusting the water spraying amount aiming at the defects and shortcomings of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a fire nozzle capable of automatically adjusting water spraying quantity comprises a water pipe for conveying water with constant instantaneous flow, a nozzle main body, a water quantity flap, a water quantity driving device, a moving ball and a moving ball, wherein the nozzle is communicated between the water pipe and the nozzle, the water quantity flap is rotatably arranged in the nozzle main body and used for controlling the preset instantaneous flow, the water quantity driving device is arranged on the nozzle main body and used for driving the water quantity flap to rotate so as to control the preset instantaneous flow, the moving ball is arranged in the nozzle and can move along the axial direction of the nozzle, the moving ball is arranged on the nozzle main body and used for driving the moving ball to move for a preset distance along the direction close to the nozzle main body when the included angle between the water quantity flap and the axial line of the nozzle main body is larger than 0 degree and smaller than or equal to 45 degrees so as to improve the stability of water when the water passes through the nozzle, and the included angle between the water quantity flap and the axial line of the nozzle main body is larger than 45 degrees and smaller than 45 degrees And the pressurizing and stabilizing driving device drives the moving ball to move a preset distance along the direction away from the spray head main body when the angle is equal to 90 degrees so as to improve the water spraying pressure of the spray head.
The further improvement is that: water yield drive arrangement including set up in the outside water yield drive casing of shower nozzle main part, rotatable set up in water yield drive casing with be used for the drive between the water yield lamella pivoted axis of rotation, set up in the axis of rotation outside is used for driving axis of rotation pivoted rotating gear, set up in lie in the shower nozzle main part be used for the drive in the water yield drive casing rotating gear pivoted piece of rotating.
The further improvement is that: the rotating part comprises two gear rows which are arranged side by side and are engaged with the rotating gear, and a first telescopic motor which is arranged on the sprayer body and is used for driving the two gear rows to move simultaneously and is positioned in the water volume driving shell.
The further improvement is that: and a stabilizing device which is arranged in the water quantity driving shell on the spray head main body and improves the meshing stability of the two tooth rows and the rotating gear when the two tooth rows move simultaneously is arranged in the water quantity driving shell.
The further improvement is that: the stabilizing device comprises a stabilizing seat arranged on the sprayer body and positioned in the water quantity driving shell, and stabilizing holes which are arranged on the stabilizing seat and matched with the tooth rows.
The further improvement is that: the pressurizing and stabilizing driving device comprises a supporting plate arranged in the sprayer body and a plurality of connecting plates for connecting the supporting plate and the inner wall of the sprayer body, set up in be used for in the backup pad the water yield lamella with the contained angle of the axis of shower nozzle main part drive when being greater than 0 less than or equal to 45 remove the ball along being close to the direction of shower nozzle main part removes predetermined distance and passes through with improvement water stability during the shower nozzle and the water yield lamella with the contained angle of the axis of shower nozzle main part drive when being greater than 45 less than or equal to 90 remove the ball along keeping away from the direction of shower nozzle main part removes predetermined distance in order to improve the flexible motor of second of the water spray pressure of shower nozzle, set up in the backup pad with remove between the ball and be located the flexible motor outside of second is used for preventing that water damage the flexible cover of loss prevention of motor of second.
The further improvement is that: and a reinforcing part for improving the connection strength between the second telescopic motor and the moving ball is arranged between the second telescopic motor and the moving ball.
The further improvement is that: the inner wall of the spray head main body is provided with a filter screen which is used for filtering the water conveyed from the water conveying pipe so as to prevent impurities in the water from passing through the spray head main body.
The further improvement is that: and a steady flow ring plate for performing steady flow treatment on the water passing through the filter screen is arranged on the inner wall of the spray head main body.
After the technical scheme is adopted, the invention has the beneficial effects that: the constant instantaneous flow water is conveyed by the water conveying pipe, the water quantity driving device drives the water quantity flap to rotate so that the water with the preset instantaneous flow quantity controlled by the water quantity flap passes through the spray head main body and is sprayed out through the spray head, when the included angle between the water quantity flap and the axis of the spray head main body is larger than 0 degree and smaller than or equal to 45 degrees, the pressurizing and stably driving device drives the moving ball to move for a preset distance along the direction close to the spray head main body so as to improve the stability of the water passing through the spray head, and when the included angle between the water quantity flap and the axis of the spray head main body is larger than 45 degrees and smaller than or equal to 90 degrees, the pressurizing and stably driving device drives the moving ball to move for a preset distance along the direction far away from the spray head main body so as to improve the water spraying pressure of the spray head, so that the fire-fighting spray head is favorable for fire fighting. The water quantity driving device drives the water quantity valve to rotate, so that the water spraying quantity can be automatically adjusted.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of the present invention.
Detailed Description
The invention will now be further described with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, the technical solution adopted by the present embodiment is:
a fire control nozzle capable of automatically adjusting water spraying quantity comprises a water conveying pipe 1 used for conveying water with constant instantaneous flow, a nozzle 2 communicated with the water conveying pipe 1 and with a gradually reduced opening, a nozzle main body 3 communicated between the water conveying pipe 1 and the nozzle 2, a water quantity flap 4 rotatably arranged in the nozzle main body 3 and used for controlling the water with preset instantaneous flow to pass through, a water quantity driving device arranged on the nozzle main body 3 and used for driving the water quantity flap 4 to rotate and used for controlling the water with preset instantaneous flow to pass through by the water quantity flap 4, a moving ball 5 arranged in the nozzle 2 and capable of moving along the axial direction of the nozzle 2, and a moving ball 5 arranged on the nozzle main body 3 and used for driving the moving ball 5 to move for a preset distance along the direction close to the nozzle main body 3 when the included angle between the water quantity flap 4 and the axial line of the nozzle main body 3 is larger than 0 degrees and smaller than or equal to 45 degrees so as to improve the stability of the water passing through the nozzle 2 and improve the stability of the water quantity when the water passes through the nozzle 2 And when the included angle between the flap 4 and the axis of the sprayer main body 3 is greater than 45 degrees and less than or equal to 90 degrees, the movable ball 5 is driven to move for a preset distance along the direction away from the sprayer main body 3 so as to improve the water spraying pressure of the sprayer 2.
Water yield drive arrangement including set up in 3 outside water yield drive casing 6 of shower nozzle main part, rotatable set up in water yield drive casing 6 with be used for the drive between the water yield lamella 4 pivoted axis of rotation 7, set up in 7 outside being used for of axis of rotation drives 7 pivoted running gear 8 of axis of rotation, set up in lie in the water yield drive casing 6 be used for the drive rotate 8 gear revolve's rotation piece.
The rotating part comprises two tooth rows 9 which are arranged side by side and are all meshed with the rotating gear 8, and a first telescopic motor 10 which is arranged on the sprayer main body 3 and is positioned in the water volume driving shell 6 and is used for driving the two tooth rows 9 to move simultaneously. The first telescopic motor 10 is connected with the two tooth rows 9 through a connecting seat 11.
A stabilizing device which improves the meshing stability of the two tooth rows 9 and the rotating gear 8 when the two tooth rows 9 move simultaneously is arranged in the water volume driving shell 6 on the nozzle body 3.
The stabilizing device comprises a stabilizing seat 12 arranged on the nozzle body 3 and positioned in the water quantity driving shell 6, and a stabilizing hole 13 arranged on the stabilizing seat 12 and matched with the tooth row 9.
The pressurizing stable-communicating driving device comprises a supporting plate 14 arranged in the spray head main body 3 and a plurality of connecting plates 15 connecting the supporting plate 14 and the inner wall of the spray head main body 3, set up in be used for in on the backup pad 14 water yield lamella 4 with the contained angle of the axis of shower nozzle main part 3 is drive when being greater than 0 less than or equal to 45 remove ball 5 along being close to shower nozzle main part 3's direction removes predetermined distance in order to improve water and pass through stability during shower nozzle 2 and water yield lamella 4 with the contained angle of the axis of shower nozzle main part 3 is drive when being greater than 45 less than or equal to 90 remove ball 5 along keeping away from shower nozzle main part 3's direction removes predetermined distance in order to improve shower nozzle 2's water spray pressure's the flexible motor 16 of second, set up in backup pad 14 with remove between the ball 5 and be located the flexible motor 16 outside of second is used for preventing that water from damaging the flexible telescope 17 of preventing of second of motor 16.
A reinforcing part 18 for improving the connection strength between the second telescopic motor 16 and the moving ball 5 is provided between the two.
The inner wall of the nozzle body 3 is provided with a filter screen 19 for filtering the water delivered from the water delivery pipe 1 to prevent impurities in the water from passing through the nozzle body 3.
And a steady flow ring plate 20 for performing steady flow treatment on the water passing through the filter screen 19 is arranged on the inner wall of the spray head main body 3.
The working principle of the invention is as follows: the water conveying pipe 1 conveys water with constant instantaneous flow, the water quantity driving device drives the water quantity valve 4 to rotate so that the water with the preset instantaneous flow controlled by the water quantity valve 4 passes through the nozzle main body 3 and is sprayed out through the nozzle 2, when the included angle between the water quantity valve 4 and the axis of the nozzle main body 3 is larger than 0 degree and smaller than or equal to 45 degrees, the pressurizing stable-flowing driving device drives the moving ball 5 to move for a preset distance along the direction close to the nozzle main body 3 so as to improve the stability of the water when the water passes through the nozzle 2, and when the included angle between the water quantity valve 4 and the axis of the nozzle main body 3 is larger than 45 degrees and smaller than or equal to 90 degrees, the pressurizing stable-flowing driving device drives the moving ball 5 to move for a preset distance along the direction far away from the nozzle main body 3 so as to improve the water spraying pressure of the nozzle 2, so that the fire-fighting use of the fire-fighting nozzle is facilitated.
While there have been shown and described what are at present considered to be the fundamental and essential features of the invention and its advantages, it will be understood by those skilled in the art that the invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (9)
1. The utility model provides a self-interacting water spray's fire control shower nozzle which characterized in that: the constant instantaneous flow water delivery device comprises a water delivery pipe for delivering water with constant instantaneous flow, a spray head main body, a water quantity flap, a water quantity driving device, a moving ball and a moving ball, wherein the spray head main body is communicated between the water delivery pipe and the spray head, the water quantity flap is rotatably arranged in the spray head main body and is used for controlling the preset instantaneous flow water to pass through, the water quantity driving device is arranged on the spray head main body and is used for driving the water quantity flap to rotate so as to control the preset instantaneous flow water to pass through, the moving ball is arranged in the spray head and can move along the axial direction of the spray head main body when the included angle between the water quantity flap and the axial line of the spray head main body is larger than 0 degree and smaller than or equal to 45 degrees, the moving ball is driven to move along the direction close to the spray head main body for a preset distance so as to improve the stability of water when the water passes through the spray head, and the moving ball is driven to move along the far direction when the included angle between the water quantity flap and the axial line of the spray head main body is larger than 45 degrees and smaller than or equal to 90 degrees And the pressurizing and stable driving device moves a preset distance away from the direction of the spray head main body so as to improve the water spraying pressure of the spray head.
2. A self-regulating fire sprinkler according to claim 1, and further comprising: water yield drive arrangement including set up in the outside water yield drive casing of shower nozzle main part, rotatable set up in water yield drive casing with be used for the drive between the water yield lamella pivoted axis of rotation, set up in the axis of rotation outside is used for driving axis of rotation pivoted rotating gear, set up in lie in the shower nozzle main part be used for the drive in the water yield drive casing rotating gear pivoted piece of rotating.
3. A self-regulating fire sprinkler according to claim 2, and further comprising: the rotating part comprises two gear rows which are arranged side by side and are engaged with the rotating gear, and a first telescopic motor which is arranged on the sprayer body and is used for driving the two gear rows to move simultaneously and is positioned in the water volume driving shell.
4. A self-regulating fire sprinkler according to claim 3, comprising: and the nozzle body is provided with a stabilizing device which is arranged in the water volume driving shell and used for improving the meshing stability of the two tooth rows and the rotating gear when the two tooth rows move simultaneously.
5. A self-regulating fire sprinkler according to claim 4, and further comprising: the stabilizing device comprises a stabilizing seat arranged on the sprayer body and positioned in the water quantity driving shell, and stabilizing holes which are arranged on the stabilizing seat and matched with the tooth rows.
6. A self-regulating fire sprinkler according to claim 1, and further comprising: the pressurizing and stabilizing driving device comprises a supporting plate arranged in the sprayer body and a plurality of connecting plates for connecting the supporting plate and the inner wall of the sprayer body, set up in be used for in the backup pad the water yield lamella with the contained angle of the axis of shower nozzle main part drive when being greater than 0 less than or equal to 45 remove the ball along being close to the direction of shower nozzle main part removes predetermined distance and passes through with improvement water stability during the shower nozzle and the water yield lamella with the contained angle of the axis of shower nozzle main part drive when being greater than 45 less than or equal to 90 remove the ball along keeping away from the direction of shower nozzle main part removes predetermined distance in order to improve the flexible motor of second of the water spray pressure of shower nozzle, set up in the backup pad with remove between the ball and be located the flexible motor outside of second is used for preventing that water damage the flexible cover of loss prevention of motor of second.
7. A self-regulating fire sprinkler as claimed in claim 6, wherein: and a reinforcing part for improving the connection strength between the second telescopic motor and the moving ball is arranged between the second telescopic motor and the moving ball.
8. A self-regulating fire sprinkler according to claim 1, and further comprising: the inner wall of the spray head main body is provided with a filter screen which is used for filtering the water conveyed from the water conveying pipe so as to prevent impurities in the water from passing through the spray head main body.
9. A self-regulating fire sprinkler according to claim 8, wherein: and a steady flow ring plate for performing steady flow treatment on the water passing through the filter screen is arranged on the inner wall of the spray head main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210522166.4A CN114768155B (en) | 2022-05-13 | 2022-05-13 | Fire control shower nozzle of self-interacting water spray |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210522166.4A CN114768155B (en) | 2022-05-13 | 2022-05-13 | Fire control shower nozzle of self-interacting water spray |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114768155A true CN114768155A (en) | 2022-07-22 |
| CN114768155B CN114768155B (en) | 2023-09-12 |
Family
ID=82437409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210522166.4A Active CN114768155B (en) | 2022-05-13 | 2022-05-13 | Fire control shower nozzle of self-interacting water spray |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114768155B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117446200A (en) * | 2023-12-25 | 2024-01-26 | 四川航空股份有限公司 | Atomizing spray decontamination plant for aircraft maintenance |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204815477U (en) * | 2015-07-29 | 2015-12-02 | 泉州市晋源消防水暖有限公司 | Dedicated nozzle of fire control hose |
| CN205084261U (en) * | 2015-09-24 | 2016-03-16 | 杨攀 | Novel fire control automatic sprinkler |
| CN209577073U (en) * | 2018-12-29 | 2019-11-05 | 宁波佳音机电科技股份有限公司 | Changeable ejecting device |
| US20210094051A1 (en) * | 2017-12-20 | 2021-04-01 | Senju Sprinkler Co., Ltd. | Sprinkler Head |
| WO2021206205A1 (en) * | 2020-04-10 | 2021-10-14 | 주식회사 파이어시스 | Collision-type fine spray fire-fighting fog nozzle |
| CN214808056U (en) * | 2021-01-15 | 2021-11-23 | 闽南消防科技有限公司 | Fire control shower nozzle of convenient regulation flow |
-
2022
- 2022-05-13 CN CN202210522166.4A patent/CN114768155B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204815477U (en) * | 2015-07-29 | 2015-12-02 | 泉州市晋源消防水暖有限公司 | Dedicated nozzle of fire control hose |
| CN205084261U (en) * | 2015-09-24 | 2016-03-16 | 杨攀 | Novel fire control automatic sprinkler |
| US20210094051A1 (en) * | 2017-12-20 | 2021-04-01 | Senju Sprinkler Co., Ltd. | Sprinkler Head |
| CN209577073U (en) * | 2018-12-29 | 2019-11-05 | 宁波佳音机电科技股份有限公司 | Changeable ejecting device |
| WO2021206205A1 (en) * | 2020-04-10 | 2021-10-14 | 주식회사 파이어시스 | Collision-type fine spray fire-fighting fog nozzle |
| CN214808056U (en) * | 2021-01-15 | 2021-11-23 | 闽南消防科技有限公司 | Fire control shower nozzle of convenient regulation flow |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117446200A (en) * | 2023-12-25 | 2024-01-26 | 四川航空股份有限公司 | Atomizing spray decontamination plant for aircraft maintenance |
| CN117446200B (en) * | 2023-12-25 | 2024-02-23 | 四川航空股份有限公司 | Atomizing spray decontamination plant for aircraft maintenance |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114768155B (en) | 2023-09-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111821632B (en) | Spraying equipment for fire control | |
| CN114768155A (en) | Fire control shower nozzle of self-interacting water spray volume | |
| CN113231412A (en) | Pipeline inner wall strikes off mechanism and water conservancy pipeline desilting equipment | |
| CN107926618A (en) | A kind of municipal administration gard watering atomization injection water sprinkler | |
| CN211818057U (en) | Spray cooling and dust settling equipment for building construction | |
| CN204350773U (en) | Reel sprinkling irrigation machine reel anti-reverse-rotation device | |
| CN212184533U (en) | Modern gardens irrigation equipment of efficient | |
| CN212464631U (en) | Liquid medicine sprinkler is used in gardens | |
| CN206838705U (en) | Container inner wall automatic flushing device and cleaning container system | |
| CN214206964U (en) | Multi-angle rotary pesticide spraying device for rice planting | |
| CN111420822B (en) | Material spraying assembly and environment-friendly coating spraying equipment | |
| CN209549793U (en) | A kind of new energy fire fighting truck tank outer wall spray equipment | |
| CN111282752A (en) | Self-cleaning paint spraying device capable of customizing patterns | |
| CN208694545U (en) | A kind of architectural engineering environmental protection drop dust removing sprayer | |
| CN207211787U (en) | A kind of watering device of concrete construction | |
| CN220759601U (en) | Aviation static spouts medicine shower nozzle structure | |
| CN207641686U (en) | A kind of swivel nozzle for pipeline disinfection | |
| CN215715623U (en) | Excavating device with forearm externally connected with water spraying and dust removing device | |
| CN220916070U (en) | Irrigation device for landscaping irrigation | |
| CN220757863U (en) | Novel fire control metal collapsible tube sprays device | |
| CN221017725U (en) | Fire control maintenance monitoring device | |
| CN214787509U (en) | Spraying dust-settling device for coal mining | |
| CN217012117U (en) | Intelligent water-saving irrigation device | |
| CN216149312U (en) | Dust fall fog gun device for building | |
| CN110178697B (en) | Pipeline pressure converter device for sprinkler irrigation system and sprinkler irrigation system |
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 |