CN107243211B - A kind of construction site dust purification method - Google Patents
A kind of construction site dust purification method Download PDFInfo
- Publication number
- CN107243211B CN107243211B CN201710514369.8A CN201710514369A CN107243211B CN 107243211 B CN107243211 B CN 107243211B CN 201710514369 A CN201710514369 A CN 201710514369A CN 107243211 B CN107243211 B CN 107243211B
- Authority
- CN
- China
- Prior art keywords
- prefabricated fence
- fence unit
- construction site
- arc end
- prefabricated
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2247/00—Details relating to the separation of dispersed particles from gases, air or vapours by liquid as separating agent
- B01D2247/08—Means for controlling the separation process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2273/00—Operation of filters specially adapted for separating dispersed particles from gases or vapours
- B01D2273/28—Making use of vacuum or underpressure
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Fencing (AREA)
Abstract
The invention discloses a kind of construction site dust purification methods, are based on a kind of enclosure wall, and enclosure wall includes multiple prefabricated fence units, multiple prefabricated fence units, are coupled are fixed into bulk enclosure wall between any two；The two sides side wall of each prefabricated fence unit is equipped with retaining ring, and pitching pile is fixed after passing through the retaining ring with ground；There is air inlet, gas outlet on each prefabricated fence unit, the airflow channel to be connected to the air inlet and air outlet is equipped in the prefabricated fence unit；Filter cloth bag is set on airflow channel in hanging like, and the air inlet of prefabricated fence unit is against filter cloth bag；Airflow line, one end are connected on the gas outlet of prefabricated fence unit, and the other end is connect with the first negative pressure device；The device of water curtain or/and water mist can be generated.Dust purification method in construction site of the present invention can on building site noise pollution and dust pollution play good barrier action, and convenient disassembly, be suitble to storage and transport.
Description
Technical field
The invention discloses a kind of construction site dust purification methods, belong to industrial building construction field.
Background technique
At present the building height of common construction enclosure wall can only simply by construction site be environmentally isolated out outside the venue, but to week
Dust pollution in the noise pollution enclosed and construction site does not have good barriering effect, especially close on residential building,
Generated noise, fugitive dust can also produce serious influence to the life of resident and surrounding enviroment when public place construction.Also,
Common construction enclosure wall is typically all to be formed using concrete block masonry, and after the completion of construction, reusable rate is low, is also easy to produce building rubbish
The problem of environmental pollutions such as rubbish, fugitive dust.
Therefore a kind of construction enclosure wall that can better solve the above problem is needed at present.
Summary of the invention
In view of the above technical problems, the present invention proposes a kind of construction site dust purification method, can be to making an uproar on building site
Good barrier action, and convenient disassembly are played in sound pollution and dust pollution, are suitble to storage and transport.
In order to achieve the above technical purposes, the present invention adopts the following technical scheme:
A kind of construction site dust purification method is based on a kind of enclosure wall, and enclosure wall includes multiple prefabricated fence units, Duo Gesuo
Prefabricated fence unit is stated, is coupled is fixed into bulk enclosure wall between any two；The two sides side wall of each prefabricated fence unit is equipped with button
Ring, pitching pile are fixed after passing through the retaining ring with ground；There is air inlet, gas outlet on each prefabricated fence unit, it is described prefabricated
The airflow channel to be connected to the air inlet and air outlet is equipped in fence unit；Filter cloth bag is set to gas in hanging like
On circulation road, the air inlet of prefabricated fence unit is against filter cloth bag；Airflow line, one end are connected to going out for prefabricated fence unit
On port, the other end is connect with the first negative pressure device；The device of water curtain or/and water mist, including water tank, water pipe, water can be generated
Pump and sprinkler head, the water pump setting are connect by water pipe with sprinkler head in water tank bottom, the water outlet of water pump, the sprinkling
Head is set on prefabricated fence unit close to the top of side in construction site；Close to construction site on the prefabricated fence unit
Air openings are equipped with positioned at the lower section of air inlet on the inner wall of side, the rear end of the air openings is negative by air pipeline and second
Pressure device connection, air pipeline is interior to be equipped with dust detector；The outer wall of the prefabricated fence unit is equipped with solar panel,
The solar panel is connect by power supply line with battery；The battery, water pump, the first negative pressure device, the second negative pressure
Device and dust detector are connect with controller respectively；
It is characterized in that, foundation enclosure wall height and length requirement select suitably prefabricated enclose firstly, selecting suitable place
Pitching pile is passed through retaining ring hole, squeezes into pitching pile in suitable position, be fixed on prefabricated fence unit by wall element number and pitching pile quantity
On ground；First negative pressure device is connect by pipeline with gas outlet；
Secondly, controller controls the starting of the second negative pressure device, by the dust detector that is arranged in air pipeline to building site
Interior air is measured in real time, and be will test data-signal and be sent to controller, the data-signal that controller will test with
Pre-set first threshold is compared, if being less than first threshold, controller does not send instruction；
If being more than first threshold, controller sends instructions to the first negative pressure device, starts the first negative pressure device to air
It is dusted suction operation；
If being more than second threshold, controller sends instructions to water pump, and the water in water tank is absorbed into sprinkler head by water pump, spray
It spills head fugitive dust direction into construction site and forms water curtain or/and water mist.
First negative pressure device is air blower, and second negative pressure device is fan；Water pipe includes general pipeline and several
One end of branch pipe, the general pipeline is connected with water pump, and the other end is connect with several branch pipes, and the water outlet of each branch pipe is connected with
One sprinkler head.
Multiple prefabricated fence units are connected with pulling eye by drag hook be combined into bulk enclosure wall between any two；It is each prefabricated to enclose
Wall unit all has a concave arc end and convex arc end, and the concave arc end is mutually agreed with convex arc end, and the concave arc end is equipped with pulling eye,
The convex arc end is equipped with the drag hook for connecting the pulling eye.
The inner wall of the water tank is equipped with liquid level sensor, and the liquid level sensor is connect with the controller.
It further include alarm, the signal output end connection of the alarm and controller.
There is puigging in the materials for wall of each prefabricated fence unit.
The pressurization guide pipe of taper is equipped between air inlet and filter cloth bag.
It is located at air inlet and air openings on the prefabricated fence unit wall and is equipped with baffling cover device, baffling cover device includes
Lid and driving lid open or close the lid driving mechanism of the air inlet and air openings, by prefabricated fence unit
Airflow channel be isolated from the outside world；
The lid driving mechanism includes: motor, gear and arc-shaped rack, wherein is connected in the drive shaft of the motor
Gear is connect, gear and arc-shaped rack are sequentially connected, and one end of arc-shaped rack is fixedly connected with cover board, cover board and prefabricated fence unit
Wall it is hinged.
It further include a Corner Link, for one will to be connected between two prefabricated fence units in an angle of 90 degrees arrangement
It rises, the Corner Link is equipped with a concave arc end and convex arc end, the convex arc end company at the concave arc end and prefabricated fence unit
It connects, the convex arc end is connect with the concave arc end of prefabricated fence unit.
Each prefabricated fence unit all has a concave arc end and convex arc end, and the concave arc end is mutually agreed with convex arc end, institute
Concave arc end is stated equipped with electromagnetism suction piece, the convex arc end is equipped with the sheet metal for connecting the electromagnetism suction piece, multiple prefabricated
Fence unit is combined into bulk enclosure wall by electromagnetic force between any two.
The utility model has the advantages that
The first, a kind of construction site dust purification method of the present invention, is formed by multiple prefabricated fence unit combination of two, can
It is with strong applicability according to the length and height for needing any increase enclosure wall；
The second, a kind of construction site dust purification method of the present invention not only has the institute of common construction enclosure wall functional, together
When there is dust-absorbing function, the fugitive dust in building site can be taken away in time, prevent what dust from construction sites from flying upward everywhere to have to the greatest extent
Beneficial effect.
Detailed description of the invention
Fig. 1 is the schematic diagram of internal structure of the prefabricated fence unit of the present invention；
Fig. 2 is the connection schematic diagram of the prefabricated fence unit of every two of the present invention；
Fig. 3 is the structural schematic diagram of the multiple prefabricated fence unit combinations of the present invention；
Fig. 4 is the structural schematic diagram of baffling cover device；
Fig. 5 is control function block diagram of the present invention；
Wherein, 1 is air inlet；2 be gas outlet；3 be filter cloth bag；4 be water tank；5 be water pump；6 be water pipe；7 be sprinkling
Head；8 be controller；9 be ash collecting box；10 be retaining ring；11 be pitching pile；12 be Corner Link；13 be air openings；14 be second
Negative pressure device；15 be cover board；16 be solar panel；17 be battery.
Specific embodiment
With reference to the accompanying drawings of the specification and specific embodiment is to a kind of skill of construction site dust purification method of the present invention
Art scheme is described in further detail.
Embodiment 1
As shown in Figure 1, being based on a kind of enclosure wall, enclosure wall includes multiple prefabricated fence units, multiple prefabricated fence units,
It is coupled between any two and is fixed into bulk enclosure wall；The two sides side wall of each prefabricated fence unit is equipped with retaining ring, and pitching pile passes through described
It is fixed after retaining ring with ground；There is air inlet, gas outlet on each prefabricated fence unit, be equipped with and use in the prefabricated fence unit
To be connected to the airflow channel of the air inlet and air outlet；Filter cloth bag is set on airflow channel in hanging like, prefabricated enclosure wall
The air inlet of unit is against filter cloth bag；Airflow line, one end are connected on the gas outlet of prefabricated fence unit, the other end and
The connection of one negative pressure device；The device of water curtain or/and water mist, including water tank can be generated, water pipe, water pump and sprinkler head are described
Water pump setting is connect by water pipe with sprinkler head in water tank bottom, the water outlet of water pump, and the sprinkler head is set to prefabricated enclosure wall
Close to the top of side in construction site on unit；Be located on the inner wall of construction site side on the prefabricated fence unit into
The lower section of port is equipped with air openings, and the rear end of the air openings is connect by air pipeline with the second negative pressure device, air
Dust detector is equipped in pipeline；The outer wall of the prefabricated fence unit is equipped with solar panel, the solar battery
Plate is connect by power supply line with battery；The battery, water pump, the first negative pressure device, the second negative pressure device and dust inspection
Instrument is surveyed to connect with controller respectively；
First, suitable place is selected, selects suitable prefabricated fence unit quantity according to enclosure wall height and length requirement
With pitching pile quantity, pitching pile is passed through into retaining ring hole, pitching pile is squeezed into suitable position, is fixed on prefabricated fence unit on ground；It will
First negative pressure device is connect by pipeline with gas outlet；
Secondly, controller controls the starting of the second negative pressure device, by the dust detector that is arranged in air pipeline to building site
Interior air is measured in real time, and be will test data-signal and be sent to controller, the data-signal that controller will test with
Pre-set first threshold is compared, if being less than first threshold, controller does not send instruction；
If being more than first threshold, controller sends instructions to the first negative pressure device, starts the first negative pressure device to air
It is dusted suction operation；
If being more than second threshold, controller sends instructions to water pump, and the water in water tank is absorbed into sprinkler head by water pump, spray
It spills head fugitive dust direction into construction site and forms water curtain or/and water mist.
As the further preferred of technical solution of the present invention, liquid level biography is provided in the water tank in each prefabricated fence unit
Sensor, when the water level in water tank is lower than the height of liquid level sensor, liquid level sensor sends a signal to controller, controller hair
It send alarm command to alarm to alarm, reminds staff in water tank plus water.
As the further preferred of technical solution of the present invention, the water pipe includes general pipeline and several branch pipes, the general pipeline
One end be connected with water pump, the other end is connect with several branch pipes, and the water outlet of each branch pipe is connected with a sprinkler head.
As the further preferred of technical solution of the present invention, there is sound insulation in the materials for wall of each prefabricated fence unit
Layer, the setting of puigging is so that enclosure wall of the present invention has better soundproof effect than common construction enclosure wall, to surrounding resident building, public affairs
Noise pollution caused by field greatly reduces altogether.
As the further preferred of technical solution of the present invention, the pressurization between air inlet and filter cloth bag equipped with taper is led
Xiang Guan.
As the further preferred of technical solution of the present invention, air inlet and air are located on the prefabricated fence unit wall
Opening is equipped with baffling cover device, and baffling cover device includes that lid and driving lid open or close the air inlet and air openings
Lid driving mechanism, the airflow channel of prefabricated fence unit is isolated from the outside world；The lid driving mechanism includes: electricity
Machine, gear and arc-shaped rack, wherein connection gear in the drive shaft of the motor, gear and arc-shaped rack are sequentially connected, arc
One end of shape rack gear is fixedly connected with cover board, and the wall of cover board and prefabricated fence unit is hinged.The setting of baffling cover device herein is
In order to prefabricated fence unit be isolated from the outside world by baffling cover device when rainy day, prevent rainwater from entering prefabricated fence unit
It is interior, cause to generate ponding in prefabricated fence unit.
The invention also includes a Corner Links, for will connect between two prefabricated fence units in an angle of 90 degrees arrangement
Together, the Corner Link is equipped with a concave arc end and convex arc end, the convex arc at the concave arc end and prefabricated fence unit
End connection, the convex arc end is connect with the concave arc end of prefabricated fence unit.
Dust purification method in construction site of the present invention, when being used for chemical plant workshop enclosure wall, chemistry has in order to prevent
Malicious reagent leaks, and can also contain other chemical liquid reagents in the water tank in the prefabricated fence unit and be passed through with substituting water
Sprinkler head at the top of enclosure wall is sprayed, and prevents chemical reagent to plant area's external diffusion to greatest extent.
Embodiment 2
Difference between embodiment 2 and embodiment 1 is only the connection structure between prefabricated fence unit horizontally
It is changed by original drag hook with pulling eye and is connected by calutron magnetic, compared to the composite construction for connecting of embodiment 1, implemented
The connection speed of example 2 is very fast, and construction efficiency is higher.
Claims (10)
1. a kind of construction site dust purification method is based on a kind of enclosure wall, enclosure wall includes multiple prefabricated fence units, multiple described
Prefabricated fence unit is coupled is fixed into bulk enclosure wall between any two；The two sides side wall of each prefabricated fence unit is equipped with retaining ring,
Pitching pile is fixed after passing through the retaining ring with ground；There is air inlet, gas outlet, the prefabricated enclosure wall on each prefabricated fence unit
The airflow channel to be connected to the air inlet and air outlet is equipped in unit；It is logical to be set to air-flow in hanging like for filter cloth bag
On road, the air inlet of prefabricated fence unit is against filter cloth bag；Airflow line, one end are connected to the gas outlet of prefabricated fence unit
On, the other end is connect with the first negative pressure device；Can generate the device of water curtain or/and water mist, including water tank, water pipe, water pump with
And sprinkler head, the water pump setting are connect by water pipe with sprinkler head in water tank bottom, the water outlet of water pump, the sprinkler head is set
It is placed on prefabricated fence unit close to the top of side in construction site；Close to construction site side on the prefabricated fence unit
Air openings are equipped with positioned at the lower section of air inlet on inner wall, the rear end of the air openings is filled by air pipeline and the second negative pressure
Connection is set, is equipped with dust detector in air pipeline；The outer wall of the prefabricated fence unit is equipped with solar panel, described
Solar panel is connect by power supply line with battery；The battery, water pump, the first negative pressure device, the second negative pressure device
And dust detector is connect with controller respectively；
It is characterized in that, firstly, suitable place is selected, according to enclosure wall height and the suitable prefabricated enclosure wall list of length requirement selection
Pitching pile is passed through retaining ring hole, squeezes into pitching pile in suitable position, prefabricated fence unit is made to be fixed on ground by first quantity and pitching pile quantity
On；First negative pressure device is connect by pipeline with gas outlet；
Secondly, controller controls the starting of the second negative pressure device, by the dust detector that is arranged in air pipeline in building site
Air is measured in real time, and be will test data-signal and be sent to controller, the data-signal that controller will test and in advance
The first threshold of setting is compared, if being less than first threshold, controller does not send instruction；
If being more than first threshold, controller sends instructions to the first negative pressure device, and the first negative pressure device of starting carries out air
Dedusting suction operation；
If being more than second threshold, controller sends instructions to water pump, and the water in water tank is absorbed into sprinkler head, sprinkler head by water pump
Into construction site, fugitive dust direction forms water curtain or/and water mist；
It is located at air inlet and air openings on the prefabricated fence unit wall and is equipped with baffling cover device, baffling cover device includes lid
And driving lid opens or closes the lid driving mechanism of the air inlet and air openings, by the gas of prefabricated fence unit
Circulation road is isolated from the outside world.
2. dust purification method in construction site according to claim 1, which is characterized in that first negative pressure device is drum
Blower, second negative pressure device are fan；Water pipe includes general pipeline and several branch pipes, one end and the water pump phase of the general pipeline
Even, the other end is connect with several branch pipes, and the water outlet of each branch pipe is connected with a sprinkler head.
3. dust purification method in construction site according to claim 1, which is characterized in that multiple prefabricated fence units, two
It is connected by drag hook with pulling eye between two and is combined into bulk enclosure wall；Each prefabricated fence unit all has a concave arc end and convex arc
End, the concave arc end are mutually agreed with convex arc end, and the concave arc end is equipped with pulling eye, and the convex arc end is equipped with described for connecting
The drag hook of pulling eye.
4. dust purification method in construction site according to claim 1, which is characterized in that the inner wall of the water tank is equipped with
Liquid level sensor, the liquid level sensor are connect with the controller.
5. dust purification method in construction site according to claim 1, which is characterized in that it further include alarm, the report
The signal output end of alert device and controller connects.
6. dust purification method in construction site according to claim 1, which is characterized in that the wall of each prefabricated fence unit
There is puigging in body material.
7. dust purification method in construction site according to claim 1, which is characterized in that air inlet and filter cloth bag it
Between be equipped with taper pressurization guide pipe.
8. dust purification method in construction site according to claim 1, which is characterized in that the prefabricated fence unit wall
Upper that baffling cover device is equipped at air inlet and air openings, baffling cover device includes that lid and driving lid open or close institute
The lid driving mechanism for stating air inlet and air openings, the airflow channel of prefabricated fence unit is isolated from the outside world；
The lid driving mechanism includes: motor, gear and arc-shaped rack, wherein tooth connection in the drive shaft of the motor
Wheel, gear and arc-shaped rack are sequentially connected, and one end of arc-shaped rack is fixedly connected with cover board, the wall of cover board and prefabricated fence unit
Wall is hinged.
9. dust purification method in construction site according to claim 1, which is characterized in that it further include a Corner Link,
For that will link together between two prefabricated fence units in an angle of 90 degrees arrangement, the Corner Link is recessed equipped with one
Arc end and convex arc end, the concave arc end are connect with the convex arc end of prefabricated fence unit, the convex arc end and prefabricated fence unit
The connection of concave arc end.
10. dust purification method in construction site according to claim 1, which is characterized in that each prefabricated fence unit is equal
With a concave arc end and convex arc end, the concave arc end is mutually agreed with convex arc end, and the concave arc end is equipped with electromagnetism suction piece, described
Convex arc end is equipped with the sheet metal for connecting the electromagnetism suction piece, and multiple prefabricated fence units pass through electromagnetic force between any two
It is combined into bulk enclosure wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710514369.8A CN107243211B (en) | 2017-06-29 | 2017-06-29 | A kind of construction site dust purification method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710514369.8A CN107243211B (en) | 2017-06-29 | 2017-06-29 | A kind of construction site dust purification method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107243211A CN107243211A (en) | 2017-10-13 |
| CN107243211B true CN107243211B (en) | 2019-04-30 |
Family
ID=60013622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710514369.8A Active CN107243211B (en) | 2017-06-29 | 2017-06-29 | A kind of construction site dust purification method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107243211B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108867463B (en) * | 2018-07-17 | 2020-09-25 | 泰州市天宇交通器材有限公司 | Isolation pile with automatic dust removal function |
| CN108798206B (en) * | 2018-08-29 | 2019-11-19 | 温州博旺联科建筑工程有限公司 | A kind of site wall unit |
| CN110453978B (en) * | 2019-07-08 | 2021-07-09 | 南京宁政工程咨询有限公司 | Wisdom building site management system based on municipal works |
| CN113020725B (en) * | 2021-03-18 | 2022-03-01 | 林嘉瑞 | Scrap removing device for bolt production |
| CN113648750B (en) * | 2021-07-30 | 2023-05-26 | 青岛海尔空调器有限总公司 | Method and device for controlling dust removing equipment, equipment and readable storage medium |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002320813A (en) * | 2001-04-27 | 2002-11-05 | Gorin Sangyo:Kk | Dust removing method and apparatus for the same |
| CN204001978U (en) * | 2014-06-16 | 2014-12-10 | 深圳市华鲁工程有限公司 | A kind of can dust suction Urban Building Construction partition wall |
| CN205370115U (en) * | 2016-02-26 | 2016-07-06 | 杜好伟 | But city construction dust absorption divider wall |
| CN106149610A (en) * | 2016-07-06 | 2016-11-23 | 武汉科技大学 | A kind of atomizing de-dusting apparatus of construction site |
-
2017
- 2017-06-29 CN CN201710514369.8A patent/CN107243211B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107243211A (en) | 2017-10-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107243211B (en) | A kind of construction site dust purification method | |
| CN107119981B (en) | One kind is based on industrial filter bag cleaning type construction enclosure wall | |
| CN204543857U (en) | A kind of multi-functional dust falling device | |
| CN203791800U (en) | Smoke-discharging and dust-removing system for flame cutting machine with large cutting thickness | |
| CN103587505A (en) | Water-saving pollution-free automatic car washing system utilizing air | |
| CN107269112B (en) | A kind of construction enclosure wall for detecting and purifying for dust | |
| CN107761612A (en) | A kind of greening wire mesh grating device | |
| CN214486187U (en) | Dust collector for building engineering | |
| CN206755432U (en) | Combined purifier | |
| CN206619390U (en) | Noise elimination Despumation device | |
| CN111528052A (en) | Gardens construction is with spraying irrigation equipment | |
| KR20180046926A (en) | Equipments needed to reduce of (ultra)fine Dust | |
| CN206769362U (en) | A kind of construction protection device for curtain wall alien invasion | |
| CN206868789U (en) | A kind of dust collection cover car | |
| CN206190310U (en) | Air purification device for mining industry | |
| CN209144872U (en) | A kind of well bore for fire-fighting detection of water supply and drainage | |
| CN107316556A (en) | Aqueous slope and land slide monitoring model | |
| CN104764681B (en) | The settling flux device and its application method of dirt | |
| CN208390521U (en) | A kind of efficient wallboard cleaning device | |
| CN209349238U (en) | A kind of construction site fugitive dust processing unit | |
| CN203271643U (en) | Pile bottom cleaning machine | |
| CN206934939U (en) | Dust collecting hood in a kind of factory | |
| CN207174583U (en) | One kind is gone out cigarette dustbin | |
| CN206464718U (en) | A kind of exhaust device for welding fume in steel box-girder casing | |
| CN206951692U (en) | A kind of Airshower chamber of integrated form |
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 |