CN216045456U - Electric stop valve with backflow prevention control - Google Patents
Electric stop valve with backflow prevention control Download PDFInfo
- Publication number
- CN216045456U CN216045456U CN202121627851.0U CN202121627851U CN216045456U CN 216045456 U CN216045456 U CN 216045456U CN 202121627851 U CN202121627851 U CN 202121627851U CN 216045456 U CN216045456 U CN 216045456U
- Authority
- CN
- China
- Prior art keywords
- cavity
- diaphragm
- diaphragm control
- connecting hole
- control
- 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
Landscapes
- Fluid-Driven Valves (AREA)
Abstract
The utility model discloses an electric stop valve with backflow prevention control, which comprises an electric valve body, wherein the electric valve body comprises a liquid inlet cavity and a liquid outlet cavity, the bottom surfaces of the liquid inlet cavity and the liquid outlet cavity are cambered surfaces, the lower end of the electric valve body is provided with an installation block, a diaphragm control upper cavity channel communicated with the liquid inlet cavity and a diaphragm control lower cavity channel communicated with the liquid outlet cavity are arranged in a water discharge block, the diaphragm control upper cavity channel and the diaphragm control lower cavity channel are both communicated with the diaphragm control cavity, and a sealing diaphragm is arranged in the diaphragm control cavity. The lower connecting hole of the liquid inlet cavity communicated with the lower position of the liquid inlet cavity is arranged in the liquid outlet cavity, the lower connecting hole of the liquid outlet cavity communicated with the higher position of the liquid outlet cavity is arranged in the liquid inlet cavity, so that water pressure can be conveniently connected to two sides of the sealing diaphragm in the mounting block, the positioning of the mounting block is facilitated through the positioning boss, the mounting of the mounting block is realized through the connecting bolt and the flange structure, and the fixing of the upper block body, the lower block body and the sealing diaphragm is realized through the lower bolt.
Description
Technical Field
The utility model belongs to the technical field of electric control valves, and particularly relates to an electric stop valve with backflow prevention control.
Background
The electric stop valve is a valve body with remote control, which is commonly used in a waterway pipe network, and has the advantages of simple structure, more convenient manufacture and maintenance, small working stroke and short opening and closing time in operation, and in the pipe network design, the electric stop valve is an indispensable valve component.
At present, a backflow prevention design is required to be added into an urban pipe network, and an electric stop valve with the backflow prevention design is not arranged at the present stage.
Disclosure of Invention
The utility model is provided for solving the problems in the prior art, and aims to provide an electric stop valve with backflow prevention control.
The technical scheme of the utility model is as follows: the utility model provides an electric stop valve with prevent backflow control, includes the electric valve body, the electric valve body includes feed liquor chamber and goes out the liquid chamber, feed liquor chamber, play liquid chamber bottom surface are the cambered surface, the electric valve body lower extreme is provided with the installation piece, be provided with in the installation piece with the diaphragm control epicoele passageway of feed liquor chamber intercommunication and with the diaphragm control cavity of going out the liquid chamber intercommunication passageway of resorption, diaphragm control epicoele passageway, diaphragm control cavity of resorption passageway all communicate with the diaphragm control chamber, be provided with sealed diaphragm in the diaphragm control chamber.
Furthermore, the diaphragm control upper cavity channel comprises a liquid inlet cavity lower connecting hole and a liquid outlet cavity lower connecting hole in the electric valve body, and the liquid inlet cavity lower connecting hole and the liquid outlet cavity lower connecting hole are both inclined.
Furthermore, the lower connecting hole of the liquid inlet cavity is communicated with the lower position of the arc-shaped surface at the bottom in the liquid inlet cavity, and the lower connecting hole of the liquid outlet cavity is communicated with the higher position of the arc-shaped surface at the bottom in the liquid outlet cavity.
Still further, the mounting block includes an upper block and a lower block, and the sealing diaphragm is disposed between the upper block and the lower block.
Furthermore, the lower extreme of going up the block forms lower cell body, the upper end of block forms the cell body down, go up the cell body, lower cell body encloses to close and forms the diaphragm control chamber.
Furthermore, the sealing diaphragm divides the diaphragm control cavity into a diaphragm control upper cavity and a diaphragm control lower cavity, the diaphragm control upper cavity is communicated with the diaphragm control upper cavity, and the diaphragm control lower cavity is communicated with the diaphragm control lower cavity.
Furthermore, a water drainage channel is formed in the lower block body and is communicated with the lower diaphragm control cavity.
Furthermore, the lower end of the sealing membrane forms a sealing end which can block the water drainage channel.
Furthermore, the mounting block and the bottom of the electric valve body are fixed through a plurality of connecting bolts.
The lower connecting hole of the liquid inlet cavity communicated with the lower position of the liquid inlet cavity is arranged in the liquid outlet cavity, the lower connecting hole of the liquid outlet cavity communicated with the higher position of the liquid outlet cavity is arranged in the liquid inlet cavity, so that water pressure can be conveniently connected to two sides of the sealing diaphragm in the mounting block, the positioning of the mounting block is facilitated through the positioning boss, the mounting of the mounting block is realized through the connecting bolt and the flange structure, and the fixing of the upper block body, the lower block body and the sealing diaphragm is realized through the lower bolt.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged view of a portion of the present invention;
wherein:
1 upstream pipe for urban water supply and 2 downstream pipe for urban water supply
3 electric valve body 4 diaphragm control upper cavity channel
5 diaphragm control upper chamber 6 sealing diaphragm
7 sealing end and 8 diaphragm control lower cavity channel
9 diaphragm control lower cavity 10 water drainage channel
11 flow sensor 12 acquisition box
13 data network 14 city water supply control upper computer
15 wireless network 16 handles mobile terminals
31 liquid inlet cavity and 32 liquid outlet cavity
33 lower connecting hole of liquid inlet cavity and 34 lower connecting hole of liquid outlet cavity
41 liquid inlet upper cavity connecting hole 42 liquid inlet transverse connecting hole
43 liquid inlet side plug 44 positioning boss
45 connecting bolt 81 liquid outlet lower cavity connecting hole
82 liquid outlet transverse connecting holes 83 are provided with liquid outlet side plugs.
Detailed Description
The present invention is described in detail below with reference to the accompanying drawings and examples:
as shown in fig. 1-2, an electronic stop valve with prevent backflow control, including electronic valve body 3, electronic valve body 3 includes feed liquor chamber 31 and play liquid chamber 32, feed liquor chamber 31, play liquid chamber 32 bottom surface are the cambered surface, 3 lower extremes of electronic valve body are provided with the installation piece, be provided with in the installation piece with feed liquor chamber 31 intercommunication diaphragm control epicoele passageway 4 and with play liquid chamber 32 intercommunication diaphragm control cavity of resorption passageway 8, diaphragm control epicoele passageway 4, diaphragm control cavity of resorption passageway 8 all communicate with diaphragm control chamber, be provided with sealed diaphragm 6 in the diaphragm control chamber.
The diaphragm control upper cavity channel 4 comprises a liquid inlet cavity lower connecting hole 33 and a liquid outlet cavity lower connecting hole 34 in the electric valve body 3, and the liquid inlet cavity lower connecting hole 33 and the liquid outlet cavity lower connecting hole 34 are inclined.
The lower connecting hole 33 of the liquid inlet cavity is communicated with the lower position of the arc-shaped surface of the bottom part in the liquid inlet cavity 31, and the lower connecting hole 34 of the liquid outlet cavity is communicated with the higher position of the arc-shaped surface of the bottom part in the liquid outlet cavity 32.
The mounting block comprises an upper block body and a lower block body, and the sealing diaphragm 6 is arranged between the upper block body and the lower block body.
The lower extreme of going up the block forms lower cell body, the upper end of block forms the cell body down, go up the cell body, lower cell body encloses to close and forms diaphragm control chamber.
The sealing diaphragm 6 divides the diaphragm control cavity into a diaphragm control upper cavity 5 and a diaphragm control lower cavity 9, the diaphragm control upper cavity 5 is communicated with the diaphragm control upper cavity channel 4, and the diaphragm control lower cavity 9 is communicated with the diaphragm control lower cavity channel 8.
A water drainage channel 10 is also formed in the lower block body, and the water drainage channel 10 is communicated with the lower diaphragm control cavity 9.
The lower end of the sealing membrane 6 forms a sealing end 7, and the sealing end 7 can block the water drainage channel 10.
The mounting block is fixed to the bottom of the electric valve 3 by a plurality of connecting bolts 45.
Diaphragm control upper chamber passageway 4 includes feed liquor upper chamber connecting hole 41, the horizontal connecting hole 42 of feed liquor, feed liquor upper chamber connecting hole 41 is vertical hole, the horizontal connecting hole 42 of feed liquor is horizontal hole, feed liquor upper chamber connecting hole 41, the horizontal connecting hole 42 intercommunication of feed liquor, feed liquor upper chamber connecting hole 41 and feed liquor chamber lower connecting hole 33 intercommunication.
Further, a connecting counter bore corresponding to the position of the drainage channel 10 is formed in the upper tank body, and the connecting counter bore is communicated with the liquid inlet transverse connecting hole 42.
The connecting counter bore and the water drainage channel 10 are coaxial and have the same size.
The diaphragm-controlled lower cavity channel 8 comprises a lower liquid outlet cavity connecting hole 81 and a horizontal liquid outlet connecting hole 82, the lower liquid outlet cavity connecting hole 81 is a vertical hole, the horizontal liquid outlet connecting hole 82 is a horizontal hole, the lower liquid outlet cavity connecting hole 81 is communicated with the horizontal liquid outlet connecting hole 82, and the lower liquid outlet cavity connecting hole 81 is communicated with the lower liquid outlet cavity connecting hole 34.
The lower tank body is provided with a communicating hole which is communicated with a liquid outlet transverse connecting hole 82.
The axes of the communication hole and the water drainage channel 10 are parallel.
Flanges are formed on the upper block body and the outer wall of the electric valve body 3, and the connecting bolt 45 penetrates through the flanges to fix the upper block body and the electric valve body.
And a through hole is formed in the lower block body, a thread counter bore is formed at the lower end of the upper block body, and a lower bolt penetrates through the through hole and is screwed into the thread counter bore, so that the upper block body and the lower block body are fixed.
The upper end of the mounting block forms a positioning boss 44, the lower end of the electric valve body 1 forms a positioning groove, and the positioning boss 44 is inserted into the positioning groove.
The liquid inlet upper connecting hole 41, the liquid inlet transverse connecting hole 42, the liquid outlet lower connecting hole 81 and the liquid outlet transverse connecting hole 82 are casting holes.
Yet another embodiment
The utility model provides an electric stop valve with prevent flowing backwards control, includes electric valve body 3, electric valve body 3 includes feed liquor chamber 31 and play liquid chamber 32, feed liquor chamber 31, play liquid chamber 32 bottom surface are the cambered surface, 3 lower extremes of electric valve body are provided with the installation piece, be provided with in the installation piece with feed liquor chamber 31 intercommunication the diaphragm control epicoele passageway 4 and with play liquid chamber 32 intercommunication the diaphragm control cavity of resorption passageway 8, diaphragm control epicoele passageway 4, diaphragm control cavity of resorption passageway 8 all communicate with the diaphragm control chamber, be provided with sealed diaphragm 6 in the diaphragm control chamber.
The diaphragm control upper cavity channel 4 comprises a liquid inlet cavity lower connecting hole 33 and a liquid outlet cavity lower connecting hole 34 in the electric valve body 3, and the liquid inlet cavity lower connecting hole 33 and the liquid outlet cavity lower connecting hole 34 are inclined.
The lower connecting hole 33 of the liquid inlet cavity is communicated with the lower position of the arc-shaped surface of the bottom part in the liquid inlet cavity 31, and the lower connecting hole 34 of the liquid outlet cavity is communicated with the higher position of the arc-shaped surface of the bottom part in the liquid outlet cavity 32.
The mounting block comprises an upper block body and a lower block body, and the sealing diaphragm 6 is arranged between the upper block body and the lower block body.
The lower extreme of going up the block forms lower cell body, the upper end of block forms the cell body down, go up the cell body, lower cell body encloses to close and forms diaphragm control chamber.
The sealing diaphragm 6 divides the diaphragm control cavity into a diaphragm control upper cavity 5 and a diaphragm control lower cavity 9, the diaphragm control upper cavity 5 is communicated with the diaphragm control upper cavity channel 4, and the diaphragm control lower cavity 9 is communicated with the diaphragm control lower cavity channel 8.
A water drainage channel 10 is also formed in the lower block body, and the water drainage channel 10 is communicated with the lower diaphragm control cavity 9.
The lower end of the sealing membrane 6 forms a sealing end 7, and the sealing end 7 can block the water drainage channel 10.
The mounting block is fixed to the bottom of the electric valve 3 by a plurality of connecting bolts 45.
Diaphragm control upper chamber passageway 4 includes feed liquor upper chamber connecting hole 41, the horizontal connecting hole 42 of feed liquor, feed liquor upper chamber connecting hole 41 is vertical hole, the horizontal connecting hole 42 of feed liquor is horizontal hole, feed liquor upper chamber connecting hole 41, the horizontal connecting hole 42 intercommunication of feed liquor, feed liquor upper chamber connecting hole 41 and feed liquor chamber lower connecting hole 33 intercommunication.
Further, a connecting counter bore corresponding to the position of the drainage channel 10 is formed in the upper tank body, and the connecting counter bore is communicated with the liquid inlet transverse connecting hole 42.
The connecting counter bore and the water drainage channel 10 are coaxial and have the same size.
The diaphragm-controlled lower cavity channel 8 comprises a lower liquid outlet cavity connecting hole 81 and a horizontal liquid outlet connecting hole 82, the lower liquid outlet cavity connecting hole 81 is a vertical hole, the horizontal liquid outlet connecting hole 82 is a horizontal hole, the lower liquid outlet cavity connecting hole 81 is communicated with the horizontal liquid outlet connecting hole 82, and the lower liquid outlet cavity connecting hole 81 is communicated with the lower liquid outlet cavity connecting hole 34.
The lower tank body is provided with a communicating hole which is communicated with a liquid outlet transverse connecting hole 82.
The axes of the communication hole and the water drainage channel 10 are parallel.
Flanges are formed on the upper block body and the outer wall of the electric valve body 3, and the connecting bolt 45 penetrates through the flanges to fix the upper block body and the electric valve body.
And a through hole is formed in the lower block body, a thread counter bore is formed at the lower end of the upper block body, and a lower bolt penetrates through the through hole and is screwed into the thread counter bore, so that the upper block body and the lower block body are fixed.
The upper end of the mounting block forms a positioning boss 44, the lower end of the electric valve body 1 forms a positioning groove, and the positioning boss 44 is inserted into the positioning groove.
The liquid inlet upper connecting hole 41, the liquid inlet transverse connecting hole 42, the liquid outlet lower connecting hole 81 and the liquid outlet transverse connecting hole 82 are processing counter bores.
The liquid inlet side plug 43 for plugging the liquid inlet transverse connecting hole 42 is arranged at the free end of the liquid inlet transverse connecting hole, and the liquid outlet side plug 83 for plugging the liquid outlet transverse connecting hole 82 is arranged at the free end of the liquid outlet transverse connecting hole.
The liquid inlet cavity 31 is communicated with an upstream pipe 1 of the urban water supply, and the liquid outlet cavity 32 is communicated with a downstream pipe 2 of the urban water supply.
A flow sensor 11 for collecting the flow of liquid in the drainage channel 10 is arranged in the drainage channel. The flow sensor 11 is communicated with an acquisition box 12 for acquiring information, the acquisition box 12 transmits the acquired information to an upper urban water supply control computer 14 through a data network 13, and the upper urban water supply control computer 14 transmits the data to a processing mobile terminal 16 through a wireless network 15.
The working process of the utility model is as follows:
in a normal operation state, the urban water supply upstream pipe 1 (high pressure) → the electric valve body 3 → the urban water supply downstream pipe 2 (low pressure), at this time, the diaphragm control upper cavity channel 4 (pressure water) → the diaphragm control upper cavity 5 (high pressure water pressure) is higher than the diaphragm control lower cavity channel 8 (low pressure water) → the diaphragm control lower cavity 9 (low pressure water); the diaphragm control upper cavity 5 presses the sealing diaphragm 6 → seals the water discharge channel 10 → blocks the diaphragm control lower cavity channel 8 (low pressure water) → the diaphragm control lower cavity 9 (low pressure water) → the flow direction to the water discharge channel 10 → at this time the backflow prevention electric stop valve 3 normally operates.
When no water drainage occurs, the flow sensor 11 (sending out a water-free flow signal) → the acquisition box 12 (providing the electric valve body 3 with normal water supply network working state data) → the data network 13 → the city water supply control upper computer 14 (storing data and performing data analysis and management) → the wireless network 15 → the processing mobile terminal 16.
When the pollution backflow occurs, the urban water supply downstream pipe 2 (high pressure) → the electric valve body 3 → the urban water supply upstream end 1 (low pressure), at this time, the diaphragm control lower cavity channel 8 (pressure water) → the diaphragm control lower cavity 9 (high pressure water pressure) is higher than the diaphragm control upper cavity channel 4 (low pressure water) → the diaphragm control upper cavity 5 (low pressure water); the diaphragm control lower cavity 9 jacks up the sealing diaphragm 6 → the water discharge channel 10 is opened, and the diaphragm control lower cavity channel 8 (pressure water) → the diaphragm control lower cavity 9 (pressure water) → the flow direction of the water discharge channel 10 → the polluted water flows out from the water discharge opening.
Meanwhile, the flow sensor 11 (with a water flow signal) is → the collection box-12 → at this time, the electric valve body 3 is controlled by the collection box 12 to be closed emergently; meanwhile, the backflow prevention working state data of the backflow prevention electric stop valve-3 → the data network 13 → the city water supply control upper computer 14 (stores the data and gives a backflow pollution diffusion alarm) → the wireless network 15 → the mobile processing terminal 16.
The lower connecting hole of the liquid inlet cavity communicated with the lower position of the liquid inlet cavity is arranged in the liquid outlet cavity, the lower connecting hole of the liquid outlet cavity communicated with the higher position of the liquid outlet cavity is arranged in the liquid inlet cavity, so that water pressure can be conveniently connected to two sides of the sealing diaphragm in the mounting block, the positioning of the mounting block is facilitated through the positioning boss, the mounting of the mounting block is realized through the connecting bolt and the flange structure, and the fixing of the upper block body, the lower block body and the sealing diaphragm is realized through the lower bolt.
Claims (9)
1. An electric stop valve with backflow prevention control, comprising an electric valve body (3), characterized in that: electric valve body (3) are including feed liquor chamber (31) and play sap cavity (32), feed liquor chamber (31), play sap cavity (32) bottom surface are the cambered surface, electric valve body (3) lower extreme is provided with the installation piece, be provided with in the installation piece with feed liquor chamber (31) intercommunication on diaphragm control cavity passageway (4) and with the diaphragm control cavity of resorption passageway (8) that goes out sap cavity (32) intercommunication, diaphragm control cavity of resorption passageway (4), diaphragm control cavity of resorption passageway (8) all communicate with diaphragm control cavity, be provided with sealed diaphragm (6) in the diaphragm control cavity.
2. An electric stop valve with backflow prevention control as defined in claim 1, wherein: the diaphragm control upper cavity channel (4) comprises a liquid inlet cavity lower connecting hole (33) and a liquid outlet cavity lower connecting hole (34) in the electric valve body (3), and the liquid inlet cavity lower connecting hole (33) and the liquid outlet cavity lower connecting hole (34) are inclined.
3. An electric stop valve with backflow prevention control as defined in claim 2, wherein: the lower connecting hole (33) of the liquid inlet cavity is communicated with the lower position of the arc-shaped surface of the bottom of the liquid inlet cavity (31), and the lower connecting hole (34) of the liquid outlet cavity is communicated with the high position of the arc-shaped surface of the bottom of the liquid outlet cavity (32).
4. An electric stop valve with backflow prevention control as defined in claim 1, wherein: the mounting block comprises an upper block body and a lower block body, and the sealing diaphragm (6) is arranged between the upper block body and the lower block body.
5. An electric stop valve with backflow prevention control as defined in claim 4, wherein: the lower extreme of going up the block forms lower cell body, the upper end of block forms the cell body down, go up the cell body, lower cell body encloses to close and forms diaphragm control chamber.
6. An electric stop valve with backflow prevention control as defined in claim 5, wherein: the sealing diaphragm (6) divides the diaphragm control cavity into a diaphragm control upper cavity (5) and a diaphragm control lower cavity (9), the diaphragm control upper cavity (5) is communicated with the diaphragm control upper cavity channel (4), and the diaphragm control lower cavity (9) is communicated with the diaphragm control lower cavity channel (8).
7. An electric stop valve with backflow prevention control as defined in claim 6, wherein: and a water drainage channel (10) is also formed in the lower block body, and the water drainage channel (10) is communicated with the diaphragm control lower cavity (9).
8. An electric stop valve with backflow prevention control as defined in claim 7, wherein: the lower end of the sealing membrane (6) forms a sealing end (7), and the sealing end (7) can block the water drainage channel (10).
9. An electric stop valve with backflow prevention control as defined in claim 1, wherein: the mounting block is fixed with the bottom of the electric valve body (3) through a plurality of connecting bolts (45).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121627851.0U CN216045456U (en) | 2021-07-18 | 2021-07-18 | Electric stop valve with backflow prevention control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121627851.0U CN216045456U (en) | 2021-07-18 | 2021-07-18 | Electric stop valve with backflow prevention control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216045456U true CN216045456U (en) | 2022-03-15 |
Family
ID=80616821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121627851.0U Active CN216045456U (en) | 2021-07-18 | 2021-07-18 | Electric stop valve with backflow prevention control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216045456U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114658862A (en) * | 2022-04-13 | 2022-06-24 | 中恒水务科技有限公司 | Resistance-free backflow preventer with double stop valves |
-
2021
- 2021-07-18 CN CN202121627851.0U patent/CN216045456U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114658862A (en) * | 2022-04-13 | 2022-06-24 | 中恒水务科技有限公司 | Resistance-free backflow preventer with double stop valves |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110323470B (en) | Fuel cell hydrogen inlet regulating device and fuel cell system using same | |
| CN216045456U (en) | Electric stop valve with backflow prevention control | |
| CN215673697U (en) | Electric ball valve with backflow prevention control function | |
| CN215673630U (en) | Electric butterfly valve with backflow prevention control | |
| CN215673674U (en) | Electric gate valve with backflow prevention control function | |
| CN202812291U (en) | Hydraulic membrane two-way valve | |
| CN210224185U (en) | Fuel cell hydrogen supply system and fuel cell system applying same | |
| CN201137956Y (en) | Air source box dispensers | |
| CN216045575U (en) | Electronic anti-backflow semi-ball valve | |
| CN212775590U (en) | High-pressure concentrated water regulating valve | |
| CN214466381U (en) | Integrated air compensating valve with check valve | |
| CN204984818U (en) | Diaphragm compressor flow automatic regulating apparatus | |
| CN215950489U (en) | Backflow-preventing check valve | |
| CN205502170U (en) | Modularization negative pressure station | |
| CN215950516U (en) | Electric anti-backflow plug valve | |
| CN211852961U (en) | Building pressure regulating box intelligent connector | |
| CN2665480Y (en) | Proportional pressure-reducing valve | |
| CN112857485A (en) | Electromagnetic flowmeter with water quality monitoring function | |
| CN2348024Y (en) | Full-automatic intermittent water supply valve | |
| CN219978719U (en) | Unmanned on duty pump station remote early warning system | |
| CN214571096U (en) | Integrated underground sewage treatment device | |
| CN212226715U (en) | High-precision filtering device for pressure regulating pry and pressure regulating pry | |
| CN212432408U (en) | Pipeline water pressure measuring device with online replaceable water pressure measuring element | |
| CN217505838U (en) | Prefabricated water quality instrument on-line monitoring cabinet | |
| CN220453040U (en) | Portable connector for penetrating through box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |