CN209942869U - A annular atomizing water curtain dust fall ware for tunnel engineering construction - Google Patents
A annular atomizing water curtain dust fall ware for tunnel engineering construction Download PDFInfo
- Publication number
- CN209942869U CN209942869U CN201920420394.4U CN201920420394U CN209942869U CN 209942869 U CN209942869 U CN 209942869U CN 201920420394 U CN201920420394 U CN 201920420394U CN 209942869 U CN209942869 U CN 209942869U
- Authority
- CN
- China
- Prior art keywords
- water
- pipe
- annular
- atomizing
- fixed
- 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
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The utility model discloses an annular atomizing water curtain dust fall ware for tunnel engineering construction, including the water pipe, still include atomizing all-in-one, annular water pipe, flexible alignment jig, the atomizing all-in-one include the box, locate in the box with the integrative electrical control device, the water supercharging device who sets up of box, the atomizing all-in-one still is equipped with a pair of rotatable gimbal of symmetry, the water supercharging device include the booster pump, water supercharging device water inlet and water pipe intercommunication, annular water pipe and tunnel inner wall cooperation set up, annular water pipe one end and water supercharging device delivery port intercommunication, annular water pipe other end is sealed and is fixed with flexible alignment jig, annular water pipe is equipped with a plurality of atomizer of equidistance distribution and spout direction orientation annular water pipe ring heart. The utility model discloses it is rational in infrastructure, can effectively reduce the tunnel raise dust exhaust influence, reduce the injury of dust to the operation personnel that advance the hole, control the emergence of lung silicosis occupational disease.
Description
Technical Field
The utility model relates to a construction auxiliary assembly technical field especially relates to an annular atomizing water curtain dust fall ware for tunnel engineering construction.
Background
The tunnel excavation is to carry out drilling, blasting, slag clearing and guniting support in a limited space, and various construction machines and transport vehicles in the tunnel can generate a large amount of dust and smoke to permeate into the tunnel, so that the tunnel excavation is a high-risk place where operators are prone to pneumoconiosis. At present, the common ventilation of domestic and foreign tunnel construction adopts a high-power ventilation motor arranged at a tunnel opening, air is conveyed into the tunnel through a soft plastic pipe, and dust is discharged outwards through the tunnel according to the air pressure difference between the inside and the outside of the tunnel. The ventilation period is long, the power consumption rate is high, the pollution is serious, the effect is poor, the occupational health is difficult to guarantee, and the like. Through investigation, the section with serious dust-raising pile number is between the excavated tunnel face and the second lining, and then the second lining is arranged at the section of the opening. According to similar engineering investigation, if a double-pipe 'one blowing and one pumping' ventilation mode is adopted, the effect is good, but the cost is doubled, and the arrangement of ventilation pipelines in the holes is limited by space, so that the difficulty of maintenance, engineering management and the like is increased.
Disclosure of Invention
The utility model aims at eliminating the problem of dust when solving in the tunnel construction, provide a structure rationally, can effectively reduce the tunnel raise dust and arrange the dirt influence, reduce the injury of dust to the operation personnel of advancing the hole, the annular atomizing water curtain dust fall ware that is used for the tunnel engineering construction of the emergence of control lung silicosis occupational disease.
In order to realize the above-mentioned purpose, the utility model discloses a following technical scheme, an annular atomizing water curtain dust fall ware for tunnel engineering construction, including the water pipe, still include atomizing all-in-one, annular water pipe, flexible alignment jig, the atomizing all-in-one include the box, locate in the box with integrative electric control device, the water supercharging device who sets up of box, the atomizing all-in-one still is equipped with a pair of rotatable balancing stand of symmetry, the water supercharging device include the booster pump, water supercharging device water inlet and water pipe intercommunication, annular water pipe and tunnel inner wall cooperation set up, annular water pipe one end and water supercharging device delivery port intercommunication, the annular water pipe other end seals and is fixed with flexible alignment jig, annular water pipe is equipped with a plurality of atomizer that equidistance distributes and spout direction orientation annular water pipe ring heart. The booster pump of this scheme is connected with electrical control device.
Preferably, the panel of the electrical control device is provided with an emergency stop button, a start button, a water pressure gauge, an overpressure flashing lamp and a standby state lamp, and the panel of the electrical control device is also provided with a dust detection display observation hole. According to the dust detection sensor, in order to facilitate workers to monitor dust concentration in a section of a tunnel section, a handheld mobile detector is adopted and is usually arranged in a clamping groove behind a control panel, an observation window is reserved for a display screen and the control panel to be overlapped, the workers can conveniently observe dust concentration parameters, and accordingly an atomized water curtain is started at any time to reduce the dust content in the section, occupational health of workers entering the tunnel is ensured, and the lung-silicon disease prevalence rate is reduced; the water pressure gauge displays the water pressure after pressurization, the overpressure flashing lamp gives an alarm after the water pressure exceeds a certain degree, and the standby state lamp displays the working state of the current equipment.
Preferably, the electric control device is provided with a dust detection terminal connection socket, and the electric control device is further provided with a far infrared detection terminal connection socket. In the scheme, a reserved dust detection terminal connecting socket is arranged on the inner panel of the shell and is used for detecting the dust content of each section at multiple points; the panel is provided with a far infrared dynamic detection terminal connecting socket, and is used for automatically stopping spraying when personnel, vehicles and machinery pass through a water curtain, the stopping and starting time is adjustable, and the starting is generally recovered within 1 minute.
As preferred, water supercharging device water inlet and water pipe pass through the hose connection, the water inlet include the hard tube of intaking, with the fixed locating pad, the filter of using of atomizing all-in-one, intake hard tube one end fixed with the hose intercommunication, the hard tube other end of intaking is intake end intercommunication fixed with the booster pump, the water supercharging device delivery port includes the hard tube of play water, with the fixed flange, the water pressure inductor of using of atomizing all-in-one, hard tube one end of play water fixed with the annular water pipe intercommunication, the hard tube other end of play water is fixed with booster pump play water end intercommunication, locating pad, flange fixed with the atomizing all-in-one box respectively. The hydraulic pressure sensor is connected with the electric control device.
Preferably, a safety valve and a return pipeline are arranged between the water inlet hard pipe and the water outlet hard pipe, two ends of the return pipeline are respectively communicated with the water inlet hard pipe and the water outlet hard pipe, and the safety valve is arranged in the middle of the return pipeline. After the water pressure exceeds the safety limit, the safety valve is automatically opened, and the water inlet end and the water outlet end of the booster pump are communicated, so that the water pressure is reduced.
Preferably, the water outlet of the water pressurizing device is communicated with the annular water pipe and fixedly adopts a connector, the connector comprises an upper connector flange, a connecting pipe, a connecting hose and an elastic flange connecting rod, the annular water pipe is provided with a connecting flange which is fixed with the upper flange of the connector and is communicated with the connecting pipe, one end of the connecting pipe is fixed on the upper flange of the connector, the other end of the connecting pipe is communicated with the water outlet of the water supercharging device through a connecting hose, the elastic flange connecting rod comprises a threaded rod, a hollow tube and a spring, the threaded rod penetrates through the hollow tube, two ends of the threaded rod are respectively connected with the flange and the upper flange of the connector, one end of the hollow pipe is abutted against the flange, the hollow tube other end is equipped with the gasket, the spring locate the threaded rod outside, the spring is located between hollow tube gasket and the connector upper flange. The elastic flange connecting rod of connector can have one or more, and this scheme connector can be used to the angle of connection of adjustment ring water pipe and water supercharging device delivery port, because ring water pipe is the arc, according to the tunnel variation in size, its radian has the change, and the coupling hose of connector can adapt to angular adjustment, and the rigidity of connection can be guaranteed to the elastic flange connecting rod, guarantees that adjustment back angle degree is unchangeable promptly.
Preferably, the pair of rotatable balancing stands are respectively arranged on two sides of the box body, each rotatable balancing stand comprises a tripod and a right-angle stand, the tripod is rotatably fixed with the box body, one end of the right-angle stand is telescopically fixed with the tripod in the horizontal direction, the other end of the right-angle stand is provided with an adjusting rod which is telescopically fixed in the vertical direction, and the adjusting rod is fixed with the ground.
Preferably, the annular water pipe is formed by connecting a plurality of sections of water distribution pipes, and the water distribution pipes are connected through flanges.
Preferably, the telescopic adjusting frame comprises a sleeve fixedly connected with the annular water pipe and a ground rod telescopically fixed with the sleeve in the vertical direction, and the ground rod is fixed with the ground.
According to the scheme, the annular water pipe of the annular atomizing water curtain dust settling device is formed by adopting a phi 33mm common galvanized running water steel pipe and is connected in a bent and segmented flange mode according to the radian of a tunnel, atomizing spray heads are arranged on a pipeline at equal intervals towards the direction of an annular inner core, the selection of the spray heads such as the distance, the direction, the single spray and the multiple spray heads can be determined and adjusted according to test results, an atomizing water curtain is generated on a full section according to effect requirements, a laser with variable colors or safety warning characters can be projected on the water curtain, and the visual propaganda effect is increased; the first path of the annular atomized water curtain dust settling device is arranged at a tunnel primary support and waterproof cloth hanging trolley (primary support section), and the visual dust settling effect is added at a tunnel face and the primary support (excavation section); the second path is arranged at the position where the second lining is finished (a second lining construction section), and is additionally provided with one path in the finishing section according to the condition in order to enhance the dust settling effect and prevent the discharged dust from polluting the finished second lining; a water pressure booster pump of the annular atomizing water curtain dust settling device is provided with a water pressure monitoring, alarming and pressure relief safety valve; the method can also be improved, for example, a dust detector terminal is additionally arranged at each construction section, a display screen is arranged at the opening to display the dust concentration and the level of each section, red, yellow and green lamps are adopted for early warning, the early warning prompt of red early warning is realized through sound and light, and voice automatic broadcasting is carried out to prompt personnel to correctly wear a mask or a protective tool; by simulating a raindrop forming theory, the air humidity in the tunnel is increased, water mist is wrapped on the surface of dust, the dust floating in the air in the tunnel is forced to fall on the ground, the air humidity of the section can be increased, the moisture-preserving maintenance efficiency of the primary support and the secondary lining is facilitated, and the maintenance quality of the primary support concrete and the secondary lining concrete is improved. And the raised dust is reduced to the minimum level step by step according to the dust fall systems arranged at different positions. Daily management should be according to district's ground dust fall and dust fall system clean and maintain, give full play to the function. The innovative measure is a unique new idea and technology in the tunnel dust prevention and reduction measure.
The beneficial effect of this scheme is: 1) the dust fall method during tunnel construction is scientifically improved, the dust emission influence of tunnel raise dust is effectively reduced, the operation environment condition harming the lung disease of operators caused by dust during tunnel excavation operation is improved from the source, the dust damage of the operators entering the tunnel is comprehensively reduced, and the occupational disease of the lung disease is controlled; 2) the secondary pollution of the secondary lining surface of the tunnel is reduced, the surface of the waterproof cloth is protected, and the dust adhesion on the surfaces of various trolleys and appliances is reduced; 3) the high power consumption of the high-power air compressor is reduced, and the construction cost is saved; 4) the tunnel ventilation time is effectively shortened, the time wasted due to ventilation is reduced, the time arrangement of working procedures is facilitated, and precious time is strived for engineering construction; 5) and the standardized construction of the construction site is effectively implemented.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the atomization all-in-one machine of the present invention.
Fig. 3 is a schematic structural diagram of the water supercharging device of the present invention.
Fig. 4 is a schematic structural diagram of the connector of the present invention.
Fig. 5 is a schematic diagram of the distribution structure of the present invention during tunnel construction.
1. Water pipe 2, atomizing all-in-one 3, annular water pipe 4, flexible alignment jig
5. Rotatable balancing stand 6, booster pump 7, atomizer 8, emergency stop button
9. A shutdown button 10, a start button 11, a water pressure gauge 12 and an overpressure flashing light
13. Standby state lamp 14, observation hole 15, hose 16 and water inlet hard tube
17. Positioning pad 18, filter 19, water outlet hard pipe 20, flange 21 and water pressure sensor
22. Safety valve 23, return pipeline 24, connector upper flange 25 and connecting pipe
26. Connecting hose 27, connecting flange 28, threaded rod 29, hollow tube 30 and spring
31. Tripod 32, right-angle stand 33, adjusting rod 34, sleeve 35 and ground rod
36. And (4) a box body.
Detailed Description
The invention is further explained below with reference to the drawings:
as shown in fig. 1 to 4, an annular atomized water curtain dust fall device for tunnel engineering construction comprises a water pipe 1, an atomization integrated machine 2, an annular water pipe 3 and a telescopic adjusting frame 4, wherein the atomization integrated machine 2 comprises a box body 36, an electrical control device and a water pressurizing device, the electrical control device and the water pressurizing device are arranged in the box body 36 and integrated with the box body 36, the atomization integrated machine 2 is further provided with a pair of symmetrical rotatable balance frames 5, the water pressurizing device comprises a pressurizing pump 6, a water inlet of the water pressurizing device is communicated with the water pipe 1, the annular water pipe 3 is matched with the inner wall of a tunnel, one end of the annular water pipe 3 is communicated with a water outlet of the water pressurizing device, the other end of the annular water pipe 3 is closed and fixed with the telescopic adjusting frame 4, the annular water pipe 3 is provided with a plurality of atomization spray nozzles 7 which;
an emergency stop button 8, a stop button 9, a start button 10, a water pressure gauge 11, an overpressure flashing lamp 12 and a standby state lamp 13 are arranged on the panel of the electric control device, and a dust detection display observation hole 14 is also arranged on the panel of the electric control device;
the water inlet of the water supercharging device is connected with the water pipe 1 through a hose 15, the water inlet comprises a water inlet hard pipe 16, a positioning pad 17 for fixing with the atomization all-in-one machine 2 and a filter 18, one end of the water inlet hard pipe 16 is fixedly communicated with the hose 15, the other end of the water inlet hard pipe 16 is fixedly communicated with the water inlet end of the booster pump 6, the water outlet of the water supercharging device comprises a water outlet hard pipe 19, a flange 20 for fixing with the atomization all-in-one machine 2 and a water pressure sensor 21, one end of the water outlet hard pipe 19 is fixedly communicated with the annular water pipe 3, the other end of the water outlet hard pipe 19 is fixedly communicated with the water outlet end of the booster pump 6;
a safety valve 22 and a return pipeline 23 are arranged between the water inlet hard pipe 16 and the water outlet hard pipe 19, two ends of the return pipeline 23 are respectively communicated with the water inlet hard pipe 16 and the water outlet hard pipe 19, and the safety valve 22 is arranged in the middle of the return pipeline 23;
the water outlet of the water supercharging device is communicated and fixed with the annular water pipe 3 by adopting a connector, the connector comprises a connector upper flange 24, a connecting pipe 25, a connecting hose 26 and an elastic flange connecting rod, the annular water pipe 3 is provided with a connecting flange 27 and is fixed with the connector upper flange 24, the annular water pipe 3 is communicated with the connecting pipe 25, one end of the connecting pipe 25 is fixed on the connector upper flange 24, the other end of the connecting pipe 25 is communicated with the water outlet of the water supercharging device through the connecting hose 26, the elastic flange connecting rod comprises a threaded rod 28, a hollow pipe 29 and a spring 30, the threaded rod 28 penetrates through the hollow pipe 29, two ends of the threaded rod 28 are respectively connected with the flange 20 and the connector upper flange 24, one end of the hollow pipe 29 abuts against the flange 20, the other end of the hollow pipe 29 is provided with a gasket 31;
the pair of rotatable balance frames 5 are respectively arranged at two sides of the box body 36, each rotatable balance frame 5 comprises a tripod 31 and a right-angle frame 32, the tripod 31 and the box body 36 can be rotatably fixed, one end of each right-angle frame 32 and the tripod 31 can be fixed in a telescopic mode in the horizontal direction, the other end of each right-angle frame 32 is provided with an adjusting rod 33 which can be fixed in a telescopic mode in the vertical direction, and the adjusting rods 33 are fixed to the ground;
the annular water pipe 3 is formed by connecting a plurality of sections of water distribution pipes, and the water distribution pipes are connected by flanges;
the telescopic adjusting frame 4 comprises a sleeve 34 fixedly connected with the annular water pipe 3 and an anchor rod 35 telescopically fixed with the sleeve 34 in the vertical direction, and the anchor rod 35 is fixed with the ground.
In the specific implementation process, as shown in fig. 5, after the connection of each part of the annular atomizing water curtain dust settling device is completed, a plurality of annular atomizing water curtain dust settling devices can be arranged in a construction tunnel, for example, the first annular atomizing water curtain dust settling device is arranged at a tunnel primary support and waterproof cloth hanging trolley (primary support section), and one annular atomizing water curtain dust settling device can be additionally arranged at a tunnel face and a primary support (excavation section) according to the dust settling effect; the second path is arranged at the position where the second lining is finished (a second lining construction section), and is additionally provided with one path in the finishing section according to the condition in order to enhance the dust settling effect and prevent the discharged dust from polluting the finished second lining;
after the setting is finished, according to the display of the dust detector, if dust removal work is required, a starting button 10 is turned on, a booster pump 6 starts to work, water is introduced from a water pipe 1 and a water inlet of a water booster device for boosting and then is pumped into an annular water pipe 3 from a water outlet of the water booster device, the water is sprayed in a mist form from an atomizing nozzle 7 of the annular water pipe 3 to form a water curtain, and dust is adsorbed and falls down;
in the water pressurization process, if the water pressure exceeds the standard, the safety valve 22 is automatically opened, the water inlet end and the water outlet end of the booster pump 6 are communicated, and the water pressure is reduced; if the water pressure continues to exceed the standard, the overpressure flashing lamp 12 gives an alarm to remind the staff to shut down, and the emergency shutdown button 8 can be pressed to perform emergency shutdown.
Claims (9)
1. The utility model provides an annular atomizing water curtain dust fall ware for tunnel engineering construction, includes the water pipe, its characterized in that still includes atomizing all-in-one, annular water pipe, flexible alignment jig, the atomizing all-in-one include the box, locate in the box with integrative electrical control device, the water supercharging device who sets up of box, the atomizing all-in-one still is equipped with a pair of rotatable gimbal of symmetry, the water supercharging device include the booster pump, water supercharging device water inlet and water pipe intercommunication, annular water pipe and tunnel inner wall cooperation set up, annular water pipe one end and water supercharging device delivery port intercommunication, the annular water pipe other end is sealed and is fixed with flexible alignment jig, the annular water pipe is equipped with a plurality of atomizer of equidistance distribution and spout direction orientation annular water pipe ring heart.
2. The annular atomized water curtain dust remover for tunnel engineering construction according to claim 1, wherein the panel of the electrical control device is provided with an emergency stop button, a start button, a water pressure gauge, an overpressure flashing lamp and a standby state lamp, and the panel of the electrical control device is further provided with a dust detection display observation hole.
3. The annular atomizing water curtain dust settling device for tunnel engineering construction as claimed in claim 1, wherein the electrical control device is provided with a dust detection terminal connection socket and a far infrared detection terminal connection socket.
4. The annular atomizing water curtain dust settling device for tunnel engineering construction is characterized in that a water inlet of the water pressurizing device is connected with a water pipe through a hose, the water inlet comprises a water inlet hard pipe, a positioning pad and a filter which are fixed to the atomizing all-in-one machine, one end of the water inlet hard pipe is fixed to the hose, the other end of the water inlet hard pipe is fixed to the water inlet end of the booster pump, a water outlet of the water pressurizing device comprises a water outlet hard pipe, a flange and a water pressure sensor which are fixed to the atomizing all-in-one machine, one end of the water outlet hard pipe is fixed to the annular water pipe, the other end of the water outlet hard pipe is fixed to the water outlet end of the booster pump, and the positioning pad and the flange are fixed to the atomizing all-in-one machine box.
5. The annular atomizing water curtain dust remover for tunnel engineering construction as claimed in claim 4, wherein a safety valve and a return pipeline are arranged between the water inlet hard pipe and the water outlet hard pipe, both ends of the return pipeline are respectively communicated with the water inlet hard pipe and the water outlet hard pipe, and the safety valve is arranged in the middle of the return pipeline.
6. The annular atomized water curtain dust settling device for tunnel engineering construction according to claim 1 or 3, wherein the water outlet of the water pressurizing device is communicated with the annular water pipe and fixedly adopts a connector, the connector comprises a connector upper flange, a connecting pipe, a connecting hose and an elastic flange connecting rod, the annular water pipe is provided with the connecting flange to be fixed with the connector upper flange, the annular water pipe is communicated with the connecting pipe, one end of the connecting pipe is fixed on the connector upper flange, the other end of the connecting pipe is communicated with the water outlet of the water pressurizing device through the connecting hose, the elastic flange connecting rod comprises a threaded rod, a hollow pipe and a spring, the threaded rod penetrates through the hollow pipe, the two ends of the threaded rod are respectively connected with the flange and the connector upper flange, one end of the hollow pipe abuts against the flange, and the other end of the hollow pipe is provided with, the spring is arranged on the outer side of the threaded rod and is positioned between the hollow tube gasket and the upper flange of the connector.
7. The annular atomizing water curtain dust remover for tunnel engineering construction according to claim 1, wherein the pair of rotatable balance frames are respectively arranged on two sides of the box body, each rotatable balance frame comprises a tripod and a right-angle frame, the tripod and the box body are rotatably fixed, one end of the right-angle frame and the tripod are telescopically fixed in the horizontal direction, the other end of the right-angle frame is provided with an adjusting rod which is telescopically fixed in the vertical direction, and the adjusting rod is fixed with the ground.
8. The annular atomized water curtain dust remover for tunnel engineering construction according to claim 1, wherein the annular water pipe is formed by connecting a plurality of sections of water distribution pipes, and the water distribution pipes are connected through flanges.
9. The annular atomized water curtain dust collector for tunnel engineering construction according to claim 1, wherein the telescopic adjusting frame comprises a sleeve fixedly connected with the annular water pipe and a ground rod telescopically fixed with the sleeve in a vertical direction, and the ground rod is fixed with the ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920420394.4U CN209942869U (en) | 2019-03-29 | 2019-03-29 | A annular atomizing water curtain dust fall ware for tunnel engineering construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920420394.4U CN209942869U (en) | 2019-03-29 | 2019-03-29 | A annular atomizing water curtain dust fall ware for tunnel engineering construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209942869U true CN209942869U (en) | 2020-01-14 |
Family
ID=69125970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920420394.4U Active CN209942869U (en) | 2019-03-29 | 2019-03-29 | A annular atomizing water curtain dust fall ware for tunnel engineering construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209942869U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113175343A (en) * | 2021-04-30 | 2021-07-27 | 华能云南滇东能源有限责任公司 | Coal mining dustproof system and using method thereof |
| CN114136578A (en) * | 2021-11-04 | 2022-03-04 | 安徽理工大学环境友好材料与职业健康研究院(芜湖) | Simulation device for dust falling test |
-
2019
- 2019-03-29 CN CN201920420394.4U patent/CN209942869U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113175343A (en) * | 2021-04-30 | 2021-07-27 | 华能云南滇东能源有限责任公司 | Coal mining dustproof system and using method thereof |
| CN114136578A (en) * | 2021-11-04 | 2022-03-04 | 安徽理工大学环境友好材料与职业健康研究院(芜湖) | Simulation device for dust falling test |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209942869U (en) | A annular atomizing water curtain dust fall ware for tunnel engineering construction | |
| CN107524338A (en) | A kind of construction isolated wall plate | |
| CN212077769U (en) | Building site dust device for construction | |
| CN109026127A (en) | A kind of tunnel construction dust controlling, anti-pernicious gas equipment | |
| CN210585590U (en) | Automobile shell coating system with dynamic coating device | |
| CN210543033U (en) | Indoor fire hydrant with water leakage alarm function | |
| CN115539833A (en) | Underground pipe gallery intelligent detection alarm system based on artificial intelligence | |
| CN215052578U (en) | Detachable spraying equipment for building engineering construction | |
| CN206167692U (en) | Novel fire extinguishing system | |
| CN205422804U (en) | Portable atomizer | |
| CN109225771A (en) | A kind of feedwater piping epoxide powder coating spray-finishing construction method | |
| CN211328675U (en) | Highway engineering construction dust device | |
| CN211513203U (en) | Tunnel intelligent fire-fighting system | |
| CN209324404U (en) | Automatic moving type depositing dust, pressure wind and water supply integrated apparatus | |
| CN210660180U (en) | Spraying device for mine | |
| CN209438884U (en) | A kind of high efficiency continuously support rod primary colors paint spraying apparatus | |
| CN208437074U (en) | Combined type air draft spraying device | |
| CN110860056A (en) | Hand-push type high-pressure fine water mist fireproof isolation device | |
| CN216198231U (en) | Automatic dust device of strip mine working face | |
| CN217067500U (en) | Fire hose device with a plurality of fire control shower nozzles | |
| CN213699338U (en) | Automatic dust-raising-prevention spraying device for construction site | |
| CN109404037A (en) | Automatic moving type depositing dust, pressure wind and water supply integrated apparatus | |
| CN219399465U (en) | Environment-friendly dust removal device for building decoration | |
| CN205117746U (en) | Spray pump of wide range sprays | |
| CN213590021U (en) | Movable indoor atomization dust removal device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |