CN109577259A - A kind of sweeping machine and working method with foldable air duct - Google Patents
A kind of sweeping machine and working method with foldable air duct Download PDFInfo
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- CN109577259A CN109577259A CN201811591311.4A CN201811591311A CN109577259A CN 109577259 A CN109577259 A CN 109577259A CN 201811591311 A CN201811591311 A CN 201811591311A CN 109577259 A CN109577259 A CN 109577259A
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- shaft
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- door
- air
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
- E01H1/08—Pneumatically dislodging or taking-up undesirable matter or small objects; Drying by heat only or by streams of gas; Cleaning by projecting abrasive particles
- E01H1/0827—Dislodging by suction; Mechanical dislodging-cleaning apparatus with independent or dependent exhaust, e.g. dislodging-sweeping machines with independent suction nozzles ; Mechanical loosening devices working under vacuum
- E01H1/0836—Apparatus dislodging all of the dirt by suction ; Suction nozzles
-
- 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
- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Ventilation (AREA)
Abstract
A kind of sweeping machine and working method with foldable air duct mainly includes mobile devices, the second vehicle frame, power device, blower, cabinet, collection device, conveyance conduit；Its connection type are as follows: the second vehicle frame is mounted on mobile devices, power device is mounted on mobile devices and the second vehicle frame, blower is installed on second vehicle frame, cabinet and collection device, blower is connect with cabinet, cabinet is connected with collection by conveyance conduit, the sweeping machine drives the device being attached thereto to carry out mobile operation by mobile devices, according to different weather and road conditions when operation, the foldable air-duct apparatus that box house is arranged in is switched over by executing agency, the negative pressure gas flow for generating blower provides negative pressure in different directions to drive rubbish, pavement garbage is collected by collection device, enter cabinet by conveyance conduit.It is mainly used for the vacuum sweeper of the floor cleanings such as road, harbour, plant area, workshop, belongs to environmental sanitation vehicles field.
Description
Technical field
The present invention relates to a kind of special vehicle fields, are related to a kind of round-the-clock sweeping machine with dry and wet switching, especially relate to
And a kind of sweeping machine and working method with foldable air duct, belong to environmental area cleaning outfit class.
Technical background
Municipal environmental sanitation most at present, industrial enterprise, airport harbour etc. are provided with sweeping machine, vacuum sweeper, sweeper
Etc. different types of environmental sanitation vehicles, for the discharge standard for reaching country, the filter device with polyester overlay film filter core is all used,
The maximum feature of this filter core be it is afraid of water, meet water and it is moist be all easy to cause filter cylinder certain damage, and dust meet water it
Being easy blocking filter cylinder afterwards declines pick-up performance, in order to improve working efficiency, so as to can be after in wet and slippery band water route face and rainy day
Continuous operation, it is most of all to install dry and wet switching device additional, but for the sweeping machine for having installed dry and wet switching device additional at present,
The flow direction of air-flow is changed after installing additional, not only device noumenon forms blocking largely to air-flow, but also reduces
The flow area in original air duct increases sweeping machine system pressure loss, substantially reduces pick-up performance, and substantially improves
Energy consumption.
Summary of the invention
The present invention overcomes and solves the deficiencies in the prior art, provides a kind of sweeping machine with foldable air duct, no
Dust suction vehicle is addressed only in the rainy day and has the case where water route face filter core is easily damaged, and makes dust suction vehicle to system resistance
Increase is reduced to zero, maintains original pick-up performance, reduces the power consumption of system, more energy conservation and environmental protection.
What the present invention was achieved through the following technical solutions.The invention mainly comprises mobile devices, the second vehicle frame, power dresses
It sets, blower, cabinet, collection device, conveyance conduit；Its connection type are as follows: the second vehicle frame is mounted on mobile devices, power device
It is mounted on mobile devices and the second vehicle frame, blower, cabinet and collection device, blower is installed on the second vehicle frame and connect with cabinet,
Cabinet is connected with collection by conveyance conduit；
Power device is installed, power device provides power for mobile devices on the mobile devices；
The cabinet include: pulse ash remover, confluence cabin, foldable air-duct apparatus, executing agency, filter device, expansion chamber,
The executing agency is used to drive the movement of foldable air-duct apparatus, and connection type is that blower and confluence cabin are connected, arteries and veins
It rushes deashing device, foldable air-duct apparatus and executing agency to be mounted in confluence cabin, confluence cabin and filter device are connected, mistake
Filter device and expansion chamber are connected up and down, and expansion chamber and collection device are connected by conveyance conduit；
The foldable air-duct apparatus includes that frame, shaft set, shaft one, shaft two, shaft three, power transfer mechanism, a left side are turned over
Door, right overhead door, switching door, sealing device, connection type are that frame front end and bottom are respectively equipped with opening, the sectional area of opening
Not less than the air inlet sectional area of blower, base of frame opening was respectively fixedly connected with two shaft sets, shaft one, shaft on three weeks
Two, shaft three covers coaxially connected with shaft, and shaft one and two one end of shaft are cooperatively connected by power transfer mechanism, and shaft two is another
One end and shaft three are cooperatively connected by power transfer mechanism, are fixedly connected with left overhead door in shaft one, are fixedly connected in shaft two
Switch door, right overhead door is fixedly connected in shaft three, switch fixed connection and sealing device between door and frame, switches and hingedly held on door
Row mechanism, executing agency are hinged on pulse ash remover, and frame front end is connect with blower, and frame lower end is connect with expansion chamber；
Foldable air-duct apparatus is divided into two kinds of working conditions, and in the first working condition, executing agency rotates down switching door,
Switching door drives shaft two to be rotated in shaft set, and shaft two drives shaft one by the power transfer mechanism that both ends connect
Rotated with shaft San Tong method, shaft one drives left overhead door to open outward, and shaft three drives right overhead door to open outward, switching door with
When base of frame opening is fully sealed by sealing device, left overhead door and right overhead door are completely folded at confluence bilge portion, sink at this time
It drops to be formed between room and confluence cabin and seal；In the second working condition, executing agency is rotated up switching door, and switching door drives
Shaft two is rotated in shaft set, and shaft two drives shaft one and shaft three same by the power transfer mechanism that both ends connect
When rotate, shaft one drives left overhead door to close upwards, and shaft three drives right overhead door to close upwards, makes to switch door and left overhead door and the right side
Overhead door forms a seal cavity, communicates between expansion chamber and foldable air-duct apparatus at this time, and confluence cabin and blower are by foldable wind
Road device is completely cut off.
The mobile devices are automobile chassis, control mode behaviour, computer；
The power source of the power device is electric power, diesel oil, gasoline, kerosene, ethyl alcohol or other energy；
The executing agency provides power by electric power, liquid, gas；
The power transfer mechanism is Bevel Gear Transmission, link mechanism；
Sweeping machine provides power by power device at work for mobile devices, and by the operation of personnel or it is unattended into
Every trade is sailed, and to drive the second vehicle frame, blower, cabinet, collection device, conveyance conduit to carry out mobile operation, blower is by power device
Power is provided and generates negative pressure gas flow, in dry pavement operation, foldable air-duct apparatus is the first working condition, what blower generated
Negative pressure gas flow makes the rubbish on road surface and dust be collected device with air-flow to collect, expansion chamber is entered by conveyance conduit, heavy
Under the settlement action for dropping room, the rubbish of bulk is retained in expansion chamber with gravity, and confluence cabin and expansion chamber are filled by foldable air duct
It sets and isolation is fully sealed, remaining muddiness air-flow can only be filtered by filter device, muddy air-flow by filter device, mistake
Clean gas after filter is flowed into confluence cabin, enters blower by the opening of frame front end, clean gas is arranged by blower
Out, since frame front end opening section product is not less than the air inlet sectional area of blower, air-flow flows more in frame front end opening
Smooth, the pressure loss can be preferably minimized, since the left overhead door of foldable air-duct apparatus, right overhead door and switching door fold completely
In confluence bilge portion, ontology, which cannot be formed air-flow, to be stopped, but system resistance increase is zero, and pulse dust cleaning fills at work
Setting also can carry out pulse dust cleaning processing to filter device, to maintain the resistance of system in minimum zone；There is the work of water route face
When, foldable air-duct apparatus is switched to the second working condition, and the rubbish and water that the negative pressure gas flow that blower generates makes road surface are with air-flow
It is collected device collection, expansion chamber is entered by conveyance conduit, under the settlement action of expansion chamber, the rubbish and water droplet of bulk
It is retained in expansion chamber with gravity, confluence cabin completely cuts off blower completely with confluence cabin by foldable air-duct apparatus ontology, water spray haze
Stream can only be flowed into blower by the cavity that foldable air-duct apparatus is formed, and be discharged by blower, and frame front end and bottom opening are cut
Area is all not less than the air inlet sectional area of blower, and air-flow flows more smooth, and the pressure loss can be preferably minimized.
Detailed description of the invention:
Fig. 1 is a kind of sweeping machine the first job state structural schematic diagram with foldable air duct.
Fig. 2 is a kind of sweeping machine the second job state structural schematic diagram with foldable air duct.
Fig. 3 is foldable the first job state of air-duct apparatus schematic perspective view.
Fig. 4 is foldable the second job state of air-duct apparatus schematic perspective view.
Fig. 5 is foldable the second job state of air-duct apparatus structure schematic top plan view.
Fig. 6 is that foldable air-duct apparatus the second job state structure overlooks cut-away illustration.
Fig. 7 is the frame schematic perspective view of the foldable air-duct apparatus.
Specific embodiment
As shown, a kind of sweeping machine with foldable air duct include mobile devices 1, the second vehicle frame 2, power device,
Blower 3, cabinet 4, collection device 5, conveyance conduit 6, mobile devices 1 are used with power device as the automobile chassis of engine,
It is travelled by driver's control, the second vehicle frame 2 is fixedly mounted on mobile devices 1, and blower 3 is fixedly mounted on the second vehicle frame 2
On, by engine as power device, and drive blower 3 to work by belt, blower 3 is connect with cabinet 4, and cabinet 4 hingedly connects
It connects on the second vehicle frame 2, is partitioned into confluence cabin 41 and expansion chamber 45 with partition inside cabinet 4, makes to converge in 4 front opening of cabinet
Stream cabin 41 is communicated with blower 3, communicates confluence cabin 41 with 45 two sides of expansion chamber at confluence 41 rear portion of cabin and lower openings, cabin of converging
41 upper end fixed pulse deashing devices 42, converge 41 lower ending opening of cabin at be fixedly connected with foldable air-duct apparatus 43；
Foldable air-duct apparatus 43 is passed by frame 431, shaft set 432, shaft 1, shaft 2 434, shaft 3 435, power
Pass mechanism, left overhead door 436, right overhead door 437, switching door 438, sealing device 439 form, frame 431 be right angle " L " type, be by
One vertical frame and a horizontal pane composition, 431 front end vertical frame of frame and bottom level frame are equipped with sectional area and are not less than blower 3
The opening of sectional area is entered the wind, frame 431 is fixedly connected at confluence 41 front end of cabin and lower ending opening, 431 bottom opening three of frame
It is respectively fixedly connected with two shafts set 432 on week, shaft 1, shaft 2 434, shaft 3 435 and shaft cover 432 and coaxial connect
It connects, in 90 ° of arrangements, the both ends of shaft 2 434 pass through power transmission point for shaft 2 434 and shaft 1 and shaft 3 435
It not being connected in shaft 1 with the one end fits of shaft 3 435, it is 2 bevel gear that power transfer mechanism, which selects two pairs of transmission ratios,
2 434 one end of shaft and shaft 1 are cooperatively connected by bevel-gear sett, and 2 434 other end of shaft and shaft 3 435 pass through
Another pair bevel gear is cooperatively connected, and is fixedly connected with the left overhead door 436 of isosceles right triangle in shaft 1, in shaft 2 434
It is fixedly connected with switching door 438, the right overhead door 437 of isosceles right triangle is fixedly connected in shaft 3 435, switches door 438 and frame
Fixed connection and sealing device 439 between frame 431, switches hinged executing agency on door 438, and executing agency is hinged on pulse dust cleaning dress
It sets on 42, executing agency selects linear motor, and filter device 44 is connected with confluence 41 open rearward end of cabin, expansion chamber 45 and receipts
Acquisition means 5 are connected by conveyance conduit 6, and collection device 5 is fixedly mounted on the second vehicle frame 2.
Sweeping machine at work by being travelled by the driver chassis that drives a car, come drive the second vehicle frame 2, blower 3,
Cabinet 4, collection device 5, conveyance conduit 6 carry out mobile operation, and in dry pavement operation, foldable air-duct apparatus 43 is first
Working condition, linear motor rotate down switching door 438, and switching door 438 drives shaft 2 434 to carry out in shaft set 432
Rotation, the bevel gear that shaft 2 434 is connected by both ends drive shaft 1 and shaft 3 435 to rotate simultaneously, shaft 1
Left overhead door 436 is driven to open outward, shaft 3 435 drives right overhead door 437 to open outward, in switching door 438 and 431 bottom of frame
When opening is fully sealed by sealing device 439, left overhead door 436 and right overhead door 437 are completely folded at confluence 41 bottom of cabin, at this time
It is formed and is sealed between expansion chamber 45 and confluence cabin 41, engine makes road surface by the negative pressure gas flow that belt drives blower 3 to generate
Rubbish and dust are collected device 5 with air-flow and collect, and expansion chamber 45 are entered by conveyance conduit 6, in the sedimentation of expansion chamber 45
Under effect, the rubbish of bulk is retained in expansion chamber 45 with gravity, and confluence cabin 41 and expansion chamber 45 are by foldable air-duct apparatus 43
Isolation is fully sealed, remaining muddiness air-flow can only be filtered by filter device 44, muddy air-flow by filter device 44,
Filtered clean gas is flowed into confluence cabin 41, blower 3 is entered by the opening of 431 front end vertical frame of frame, by wind
Clean gas is discharged in machine 3, since the opening section product of 431 front end vertical frame of frame is not less than the air inlet sectional area of blower 3, gas
Flow 431 front end vertical frame of frame opening flow it is more smooth, the pressure loss can be preferably minimized, due to foldable wind
Left overhead door 436, right overhead door 437 and the switching door 438 of road device 43 are completely folded at confluence 41 bottom of cabin, and ontology cannot be to gas
Stream, which is formed, to be stopped, but system resistance increase is zero, and pulse ash remover 42 also can carry out pulse to filter device at work
Deashing processing, to maintain the resistance of system in minimum zone；
When there is the work of water route face, foldable air-duct apparatus 43 is switched to the second working condition, linear motor make to switch door 438 to
Upper rotation, switching door 438 drive shaft 2 434 to be rotated in shaft set 432, the cone that shaft 2 434 is connected by both ends
Gear band turn axis 1 and shaft 3 435 rotate simultaneously, and shaft 1 drives left overhead door 436 to close upwards, shaft 3 434
It drives right overhead door 437 to close upwards, makes to switch door 438 and left overhead door 436 and right overhead door 437 forms a seal cavity, sink at this time
It is communicated between drop room 45 and foldable air-duct apparatus 43, confluence cabin 41 is completely cut off with blower 3 by foldable air-duct apparatus 43, is sent out
Motivation drives the negative pressure gas flow of the generation of blower 3 that the rubbish on road surface and water is made to be collected device 5 with air-flow and collects, pass through by belt
Conveyance conduit 6 enters expansion chamber 45, and under the settlement action of expansion chamber 45, it is heavy that the rubbish and water droplet of bulk are retained in gravity
It drops in room 45, confluence cabin 41 completely cuts off blower 3 and confluence cabin 41 completely by foldable 43 ontology of air-duct apparatus, and water mist air-flow can only
It is flowed into blower 3 by the cavity that foldable air-duct apparatus 43 is formed, is discharged by blower 3,431 front end vertical frame of frame and bottom
The opening section product of horizontal pane is all not less than the air inlet sectional area of blower 3, and air-flow flows more smooth, and the pressure loss can drop
To minimum.
Claims (7)
1. a kind of sweeping machine with foldable air duct, including mobile devices (1), the second vehicle frame (2), power device, blower
(3), cabinet (4), collection device (5), conveyance conduit (6)；Its connection type are as follows: second vehicle frame (2) is mounted on the row
It sails on device (1), the power device is mounted on the mobile devices (1) and second vehicle frame (2), second vehicle frame
(2) blower (3), cabinet (4) and collection device (5) are installed, the blower (3) connect with the cabinet (4), the case on
Body (4) is connected with the collection device (5) by the conveyance conduit (6)；
The power device is installed, the power device is the mobile devices (1) and the wind on the mobile devices (1)
Machine (3) provides power；
The cabinet (4) include: pulse ash remover (42), confluence cabin (41), foldable air-duct apparatus (43), executing agency,
Filter device (44), expansion chamber (45), the executing agency are used to drive the movement of foldable air-duct apparatus (42), connection side
Formula are as follows: the blower (3) and the confluence cabin (41) are connected, the pulse ash remover (42), foldable air-duct apparatus
(43), executing agency is mounted in the confluence cabin (41), and the confluence cabin (41) and the filter device (44) are connected,
The filter device (44) is connected with the expansion chamber (45), and the expansion chamber (45) and the collection device (5) pass through institute
Conveyance conduit (6) is stated to be connected；
The foldable air-duct apparatus (43) include frame, shaft set, shaft one, shaft two, shaft three, power transfer mechanism,
Left overhead door, right overhead door, switching door, sealing device, connection type are to be fixedly connected with shaft set on frame, shaft one, shaft two,
Shaft three and shaft set connect, and shaft one is connected with one end of shaft two by power transfer mechanism, two other end of shaft and
Shaft three is connected by power transfer mechanism, and left overhead door is fixedly connected in shaft one, switching door is fixedly connected in shaft two, is turned
It is fixedly connected with right overhead door on axis three, switches fixed connection and sealing device between door and frame, switches hinged executing agency on door, frame
Frame front end is connect with blower (3), and frame lower end is connect with expansion chamber (45).
2. a kind of sweeping machine with foldable air duct according to claim 1, it is characterised in that: the mobile devices (1)
For automobile chassis, control mode behaviour, computer.
3. a kind of sweeping machine with foldable air duct according to claim 1, it is characterised in that: the power device is moved
Power source is electric power, diesel oil, gasoline, kerosene, ethyl alcohol or natural gas.
4. a kind of sweeping machine with foldable air duct according to claim 1, it is characterised in that: the executing agency is by electricity
Power, liquid, gas provide power.
5. a kind of sweeping machine with foldable air duct according to claim 1, it is characterised in that: the power transfer mechanism
For Bevel Gear Transmission, link mechanism.
6. a kind of sweeping machine with foldable air duct according to claim 1, it is characterised in that: foldable air-duct apparatus
(43) by frame (431), shaft set (432), shaft one (433), shaft two (434), shaft three (435), power transfer mechanism,
Left overhead door (436), right overhead door (437), switching door (438), sealing device (439) composition, frame (431) is right angle " L " type, is
It is made of a vertical frame and a horizontal pane, frame (431) front end vertical frame and bottom level frame are not less than equipped with sectional area
Blower (3) enters the wind the opening of sectional area, and frame (431) is fixedly connected at confluence cabin (41) front end and lower ending opening, frame
(431) opening of bottom level frame is respectively fixedly connected with two shaft sets (432), shaft one (433), shaft two on three weeks
(434), shaft three (435) and shaft set (432) are coaxially connected, shaft two (434) and shaft one (433) and shaft three (435)
It is arranged in 90 °, the both ends of shaft two (434) are by power transmission respectively at the one of shaft one (433) and shaft three (435)
End is cooperatively connected, and it is 2 bevel gear, shaft two (434) one end and shaft one (433) that power transfer mechanism, which selects two pairs of transmission ratios,
It is cooperatively connected by bevel-gear sett, shaft two (434) other end and shaft three (435) are connected by the cooperation of another pair bevel gear
It connects, the left overhead door (436) of isosceles right triangle is fixedly connected in shaft one (433), is fixedly connected with switching in shaft two (434)
Door (438) is fixedly connected with the right overhead door (437) of isosceles right triangle in shaft three (435), switches door (438) and frame
(431) fixed connection and sealing device (439) between switch hinged executing agency on door (438), and it is clear that executing agency is hinged on pulse
On apparatus for ash (42), executing agency selects linear motor, and filter device (44) is connected with confluence cabin (41) open rearward end, sinks
Drop room (45) is connected with collection device (5) by conveyance conduit (6), and collection device (5) is fixedly mounted on the second vehicle frame (2)
On.
7. a kind of working method of the sweeping machine with foldable air duct: sweeping machine is in dry pavement operation, foldable air duct
Device (43) is the first working condition, and linear motor rotates down switching door (438), and switching door (438) drives shaft two
(434) rotated in the shaft set (432), bevel gear drive shaft one (433) that shaft two (434) connect by both ends and
Shaft three (435) rotates simultaneously, and shaft one (433) drives left overhead door (436) to open outward, and shaft three (435) drives right overhead door
(437) it opens outward, it is left when switching door (438) and frame (431) bottom opening are fully sealed by sealing device (439)
Overhead door (436) and right overhead door (437) are completely folded at confluence cabin (41) bottom, at this time between expansion chamber (45) and confluence cabin (41)
Sealing is formed, engine drives the negative pressure gas flow of blower (3) generation to receive the rubbish on road surface and dust with air-flow by belt
Acquisition means (5) are collected, and enter expansion chamber (45), under the settlement action of expansion chamber (45), bulk by conveyance conduit (6)
Rubbish is retained in expansion chamber (45) with gravity, and confluence cabin (41) is completely close by foldable air-duct apparatus (43) with expansion chamber (45)
Absolutely, remaining muddiness air-flow can only be filtered by filter device (44), muddy air-flow by filter device (44), mistake for packing
Clean gas after filter is flowed into confluence cabin (41), enters blower (3) by the opening of frame (431) front end vertical frame,
Clean gas is discharged by blower (3), due to frame (431) front end vertical frame opening section product not less than blower (3) into
Wind sectional area, air-flow frame (431) front end vertical frame opening flow it is more smooth, the pressure loss can drop to most
It is low, since the left overhead door (436) of foldable air-duct apparatus (43), right overhead door (437) and switching door (438) are completely folded at confluence
Cabin (41) bottom, ontology, which cannot be formed air-flow, to be stopped, but system resistance increase is zero, at work pulse ash remover
(42) can also pulse dust cleaning processing be carried out to filter device, to maintain the resistance of system in minimum zone；
When there is the work of water route face, foldable air-duct apparatus (43) is switched to the second working condition, and linear motor makes to switch door
(438) it is rotated up, switching door (438) drives shaft two (434) to be rotated in shaft set (432), and shaft two (434) is logical
The bevel gear for crossing both ends connection drives shaft one (433) and shaft three (435) while rotating, and shaft one (433) drives left overhead door
(436) close upwards, shaft three (434) drives right overhead door (437) to close upwards, make to switch door (438) and left overhead door (436) and
Right overhead door (437) forms a seal cavity, communicates between expansion chamber (45) and foldable air-duct apparatus (43) at this time, cabin of converging
(41) completely cut off with blower (3) by foldable air-duct apparatus (43), the negative pressure that engine drives blower (3) to generate by belt
Air-flow make road surface rubbish and water with air-flow be collected device (5) collect, expansion chamber (45) are entered by conveyance conduit (6),
Under the settlement action of expansion chamber (45), the rubbish and water droplet of bulk are retained in expansion chamber (45) with gravity, are converged cabin (41)
Completely cut off blower (3) and confluence cabin (41) completely by foldable air-duct apparatus (43) ontology, water mist air-flow can only be by foldable
The cavity that air-duct apparatus (43) is formed is flowed into blower (3), is discharged by blower (3), frame (431) front end vertical frame and bottom water
The opening section product of flat frame is all not less than the air inlet sectional area of blower (3), and air-flow flows more smooth, and the pressure loss can drop
To minimum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811591311.4A CN109577259A (en) | 2018-12-25 | 2018-12-25 | A kind of sweeping machine and working method with foldable air duct |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811591311.4A CN109577259A (en) | 2018-12-25 | 2018-12-25 | A kind of sweeping machine and working method with foldable air duct |
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| Publication Number | Publication Date |
|---|---|
| CN109577259A true CN109577259A (en) | 2019-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811591311.4A Pending CN109577259A (en) | 2018-12-25 | 2018-12-25 | A kind of sweeping machine and working method with foldable air duct |
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|---|---|---|---|---|
| CN109930532A (en) * | 2019-04-12 | 2019-06-25 | 日照职业技术学院 | A kind of environmental landscape purification cleaning vehicle |
| CN114395963A (en) * | 2021-12-16 | 2022-04-26 | 中北交通建设集团有限公司 | Highway repairing machine |
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