阅读说明：本技术 一种气力输送系统及具有其的扫路机 (Pneumatic conveying system and road sweeper with same ) 是由 程磊 单龙 温玉霜 冯英达 肖晨 邢继婉 于 2021-10-08 设计创作，主要内容包括：本发明公开了一种气力输送系统及具有其的扫路机,包括箱体、吸尘装置和洒水装置；所述箱体内设有垃圾箱,垃圾箱顶部设有风机,底部设有污水箱,所述垃圾箱两侧设有滤窗,通过滤窗与污水箱连通；所述垃圾箱通过主吸管和过渡管连接吸尘装置,所述主吸管由下向上倾斜,其入口连接过渡管,出口伸至垃圾箱内上部,出口处还设有导流挡板；所述箱体尾端顶部设有出口向下的导流罩,与垃圾箱之间形成排气通道；所述污水箱通过循环管路连接至过渡管；所述洒水装置设于吸尘装置前部。本发明能够减少作业过程中的扬尘以及吸拾的细小颗粒粉尘等随气流再次排出,有效避免了作业中对过路行人的影响以及对环境的二次污染,提高了扫路机的清扫质量。(The invention discloses a pneumatic conveying system and a road sweeper with the same, wherein the pneumatic conveying system comprises a box body, a dust collecting device and a water spraying device; a dustbin is arranged in the dustbin body, a fan is arranged at the top of the dustbin, a sewage box is arranged at the bottom of the dustbin, and filter windows are arranged on two sides of the dustbin and are communicated with the sewage box through the filter windows; the garbage can is connected with a dust collection device through a main suction pipe and a transition pipe, the main suction pipe inclines from bottom to top, an inlet of the main suction pipe is connected with the transition pipe, an outlet of the main suction pipe extends to the upper part in the garbage can, and a flow guide baffle is further arranged at the outlet; a guide cover with a downward outlet is arranged at the top of the tail end of the box body, and an exhaust channel is formed between the guide cover and the garbage can; the sewage tank is connected to the transition pipe through a circulating pipeline; the sprinkling device is arranged at the front part of the dust suction device. The invention can reduce the flying dust and the sucked and picked fine particle dust and the like in the operation process to be discharged again along with the air flow, effectively avoids the influence on passers-by in the operation and the secondary pollution to the environment, and improves the cleaning quality of the road sweeper.)

1. A pneumatic conveying system, comprising: the box body, the dust collecting device and the water spraying device; a dustbin is arranged in the dustbin body, a fan is arranged at the top of the dustbin, a sewage box is arranged at the bottom of the dustbin, and filter windows are arranged on two sides of the dustbin and are communicated with the sewage box through the filter windows; the garbage can is connected with a dust collection device through a main suction pipe and a transition pipe, the main suction pipe inclines from bottom to top, an inlet of the main suction pipe is connected with the transition pipe, an outlet of the main suction pipe extends to the upper part in the garbage can, and a flow guide baffle is further arranged at the outlet of the main suction pipe; a guide cover with a downward outlet is arranged at the top of the tail end of the box body, and an exhaust channel is formed between the guide cover and the garbage can; the sewage tank is connected to the transition pipe through a circulating pipeline; the sprinkling device is arranged at the front part of the dust suction device.

2. The pneumatic conveying system of claim 1, wherein the blower and the driving motor thereof are mounted on the top of the dustbin, an air inlet of the blower extends into the dustbin, a filter screen is arranged at the air inlet, a brush is arranged at a rotating part of the volute, an air outlet of the blower is arranged outside the dustbin, a fine filter device with a filter precision of 20 μm to 200 μm is arranged at the air outlet, and the fine filter device is detachable.

3. The pneumatic conveying system of claim 1, wherein the main suction pipe is a double-layer pipe, wherein an outer layer pipe is externally welded on the dustbin, an inner layer pipe is detachably mounted in the outer layer pipe, and the inner layer pipe is a rubber pipe.

4. The pneumatic conveying system of claim 3, wherein the transition pipe comprises a lower connecting pipe, a sealing strip and an upper connecting pipe, the upper connecting pipe is connected with the main suction pipe, and the lower connecting pipe is connected with a dust suction device to form a dust suction air duct; the upper connecting pipe and the outer layer pipe of the main suction pipe hold the inner layer pipe of the main suction pipe in the middle for installation and fastening; the sealing strip is used for sealing the butt joint of the upper connecting pipe and the lower connecting pipe.

5. The pneumatic conveying system of claim 4, wherein an inlet of the circulating waterway is connected to the bottom of the sewage tank, a water outlet is arranged at the upper part of the lower connecting pipe of the transition pipe, and a control valve for controlling the waterway to be connected and disconnected is arranged in the middle of the circulating waterway.

6. The pneumatic conveying system of claim 1, wherein the baffle comprises a rigid plate and a soft paper plate, the top end of the rigid plate is welded on the top of the garbage can, the soft paper plate is installed on the rigid plate, the baffle is integrally inclined downwards, and a diversion plate with a humanoid structure is arranged on one side facing the outlet of the main suction pipe.

7. The pneumatic conveying system of claim 1, wherein the dust suction device comprises a suction cup and a dust suction pipe, the suction cup is of a V-shaped structure, the V-shaped opening end is a suction cup inlet, the V-shaped included angle end is a suction cup outlet, one end of the dust suction pipe is connected with the suction cup outlet, and the other end of the dust suction pipe is connected with the transition pipe.

8. The pneumatic conveying system of claim 7, wherein the suction cup is provided with adjustable baffles around its periphery to adjust the distance between the suction cup and the ground; the opening end of the V-shaped structure is also provided with a turnover plate which can be folded and unfolded.

9. The pneumatic conveying system according to claim 1, further comprising an auxiliary suction pipe, wherein the auxiliary suction pipe is arranged at the front part of the box body, an inlet is communicated with the transition pipe, and an outlet is sealed by a rubber plug; the auxiliary suction pipe and the main suction pipe can be selectively opened or closed.

10. A road sweeper characterized in that the road sweeper is provided with the pneumatic conveying system as claimed in any one of claims 1-9.

Technical Field

The invention belongs to the field of sanitation vehicles, and particularly relates to a pneumatic transmission system and a road sweeper with the same.

Background

The mechanical sweeping of outdoor roads is an important mark of environmental sanitation modernization, and the road sweeper is widely applied to sweeping operation of non-motor vehicle lanes, sidewalks, squares, parks and the like due to the characteristics of small volume, flexible steering and the like. The common road sweeper in the market at present can be divided into a pure sweeping type, a pure suction type and a suction sweeping type according to the operation form. Suction-sweeping type road sweeper mainly relies on sweeping the dish and cleans, and pneumatic conveying system inhales rubbish and picks up, inhales the outside air and the rubbish brought into thereupon through the negative pressure that the fan produced in the dustbin, nevertheless rubbish gets into can appear partly suspended particles, dust etc. in the dustbin, and the back is discharged along with the air together, produces certain raise dust, causes certain influence to pedestrian and all ring edge borders.

Disclosure of Invention

The invention aims to overcome the defects and provides a pneumatic conveying system and a road sweeper with the same so as to realize stable and reliable garbage suction and collection, effectively avoid the phenomenon that sucked fine particles, dust and the like are discharged along with airflow again and reduce the influence on pedestrians and the surrounding environment during the operation of the road sweeper.

In order to realize the purpose, the invention is realized by the following technical scheme:

a pneumatic conveying system comprises a box body, a dust collecting device and a water spraying device; a dustbin is arranged in the dustbin body, a fan is arranged at the top of the dustbin, a sewage box is arranged at the bottom of the dustbin, filter windows are arranged on two sides of the dustbin and are communicated with the sewage box through the filter windows, and a garbage-water mixture sucked into the dustbin enters the sewage box after being filtered by the filter windows; the garbage can is connected with a dust collection device through a main suction pipe and a transition pipe, the main suction pipe inclines from bottom to top, an inlet of the main suction pipe is connected with the transition pipe, an outlet of the main suction pipe extends to the upper part in the garbage can, and a flow guide baffle is further arranged at the outlet; a guide cover with a downward outlet is arranged at the top of the tail end of the box body, an exhaust channel is formed between the guide cover and the garbage can, and the guide cover guides the exhausted air; the sewage tank is connected to the transition pipe through a circulating pipeline; the water spraying device is arranged at the front part of the dust collection device and is mainly used for first dust fall during operation, water sprayed out of the water spraying device can form water mist to wet garbage such as dust on the ground, and dust raising is prevented from occurring during cleaning.

Furthermore, the fan and the driving motor thereof are arranged at the top of the dustbin, and the air inlet of the fan extends into the dustbin and can draw out the gas in the dustbin; a filter screen is arranged at the air inlet to prevent large garbage from being sucked into the fan to damage the fan; the rotating part of the volute is provided with a brush, and the brush rotates when the fan works, so that fine particles, dust and the like in sucked air flow can be filtered, and the fine particles, the dust and the like are settled to the filter screen of the air inlet and then fall into the garbage can; the air outlet of the fan is positioned outside the dustbin, and a fine filtering device with the aperture of 20-200 mu m is arranged at the air outlet and can further filter fine particles, dust and the like brought by airflow; the fine filter device can be detached and adjusted according to the road surface condition, if more usable 20 mu m of earth dust, if more optional great precision of leaf and grass bits, the dust of gathering can also be regularly cleared up, and the excessive influence filter effect of the dust gathering of filtering is prevented.

Further, main straw is the double-deck pipe, and wherein outside pipe outside welding is on the dustbin, and inlayer pipe detachably installs in outer intraductal, can realize quick replacement, inlayer pipe is the rubber tube, and is comparatively wear-resisting.

Furthermore, the transition pipe comprises a lower connecting pipe, a sealing strip and an upper connecting pipe, the upper connecting pipe is connected with the main suction pipe, and the lower connecting pipe is connected with the dust collection device to form a dust collection air channel; the upper connecting pipe and the outer pipe of the main suction pipe hold the inner pipe of the main suction pipe in the middle for installation and fastening, when the upper connecting pipe needs to be replaced, the upper connecting pipe is detached, the inner pipe of the main suction pipe is pulled out, and the upper connecting pipe and the inner pipe are replaced and then installed again; the sealing strip is used for sealing the butt joint of the upper connecting pipe and the lower connecting pipe. Specifically, the lower connecting pipe can be fixed on the frame, a groove is formed in the upper plane of the lower connecting pipe, the sealing strip is fixed in the groove in the upper plane of the lower connecting pipe, the top of the sealing strip is in contact extrusion with the upper connecting pipe, and the upper connecting pipe is fixedly connected with the main suction pipe and lifted along with the box body. When the box body is lifted, the ascending connecting pipe is lifted together with the box body. When the box body falls, the sealing strip is pressed through the upper connecting pipe to realize the sealing of the whole air channel. The sealing strip is internally provided with a cavity, so that the extrusion allowance can be increased.

Furthermore, an inlet of the circulating waterway is connected with the bottom of the sewage tank, and water is discharged from the sewage tank; the delivery port sets up and sprays water in the lower connecting pipe upper portion of transition pipe, forms the water curtain, and it is moist to utilize sewage to carry out the secondary dust fall to the rubbish in the wind channel, reduces the suspended particles dust etc. in the dustbin, and the centre is equipped with the control valve of control water route intercommunication and disconnection, can break off the water route after the fan stop work, prevents that the circulation water route from working always and making sewage flow to ground once more.

Furthermore, the baffle plate comprises a rigid plate and a soft paper plate, the top end of the rigid plate is welded to the top of the garbage can, the soft paper plate is installed on the rigid plate, a groove can be specifically formed in the rigid plate, the soft plate can be inserted into the groove through a wedge-shaped structure, quick replacement can be achieved, the soft plate is generally made of rubber, a certain buffering effect on sucked garbage can be achieved, and certain sound generated when the garbage directly contacts and collides with the rigid part is avoided; the baffle whole downward sloping is equipped with the flow distribution plate of humanoid structure towards the one side of main straw export, and one is with inspiratory rubbish water conservancy diversion to dustbin bottom downwards, controls the reposition of redundant personnel again, prevents that rubbish from gathering in the middle part, flows back to main straw, is convenient for let rubbish distribute in the dustbin comparatively evenly.

Furthermore, the dust suction device comprises a sucker and a dust suction pipe, the sucker is of a V-shaped structure, the V-shaped opening end is a sucker inlet, and the V-shaped included angle end is a sucker outlet, so that garbage is convenient to collect and suck; the dust absorption pipe is a corrugated pipe, one end of the dust absorption pipe is connected with the sucker outlet, and the other end of the dust absorption pipe is connected with the transition pipe.

Furthermore, the periphery of the sucker is provided with an adjustable baffle, the distance between the sucker and the ground can be adjusted according to the condition of the road surface and the abrasion condition of other parts, and the distance is preferably kept within 1cm, so that a better sucking and picking effect is ensured; the opening end of the V-shaped structure is also provided with a foldable turning plate, the suction cup inlet is closed when the vacuum suction cup is put down, a good negative pressure suction effect can be guaranteed, and the suction of large garbage can be realized when the vacuum suction cup is turned over.

Furthermore, the pneumatic conveying system also comprises an auxiliary suction pipe, the auxiliary suction pipe is arranged at the front part of the box body, an inlet is communicated with the transition pipe, and an outlet is sealed by a rubber plug; the auxiliary suction pipe and the main suction pipe can be selectively opened or closed. Preferably, the auxiliary suction pipe is a telescopic corrugated pipe, the large telescopic ratio ensures that the auxiliary suction pipe is convenient to store when compressed, the auxiliary suction pipe can be used for carrying out handheld suction operation in a certain range when stretched, and garbage in an area where a vehicle cannot enter can be picked up.

The invention also provides a road sweeper, and the pneumatic conveying system is arranged on the road sweeper.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, through a series of measures such as cleaning water sprinkling dust fall, circulating water path dust fall in the suction and collection air channel, baffle plate sedimentation, filtration, air channel diversion and the like, the dust flying in the operation process and the sucked and collected fine particle dust are reduced to be discharged again along with the air flow, the influence on passers-by in the operation and the secondary pollution to the environment are effectively avoided, and the cleaning quality of the road sweeper is improved.

The invention utilizes the sewage after the suction and filtration to carry out the wetting and dust reduction again on the picked up garbage, thereby greatly improving the water endurance time of the whole machine and the existence of suspended particles, dust and the like in the garbage, and simultaneously saving resources and cost; and the water outlet of the circulating waterway is arranged at the upper part of the transition pipe, so that secondary pollution caused by sewage flowing to the ground can be effectively prevented.

Drawings

Fig. 1 is a schematic front view of a pneumatic transmission system according to an embodiment of the present invention.

Fig. 2 is a schematic side view of a pneumatic conveying system according to an embodiment.

FIG. 3 is a schematic structural diagram of a transition duct according to an embodiment.

Fig. 4 is a schematic structural diagram of the baffle according to the embodiment.

Fig. 5 is a view taken along direction a of fig. 4.

Fig. 6 is a schematic structural view of the suction device according to the embodiment in a state that the flap of the suction cup is placed down.

Fig. 7 is a schematic structural view of the suction device according to the embodiment in a state that the flap of the suction cup is retracted.

FIG. 8 is a top view of a suction cup of the dust suction apparatus according to the embodiment.

Fig. 9 is a schematic structural diagram of the blower according to the embodiment.

In the figure: 1-box body, 101-dustbin, 102-sewage box, 103-main suction pipe, 1031-outer layer pipe, 1032-inner layer pipe, 104-transition pipe, 1041-upper connecting pipe, 1042-sealing strip, 1043-lower connecting pipe, 105-filter window, 106 baffle, 1061-rigid plate, 1062-soft plate, 1063-flow distribution plate, 107 flow guide cover, 2-dust suction device, 201-suction cup, 202-dust suction pipe, 203-adjustable baffle, 204-turning plate, 3-blower, 301-filter screen, 302-fine filter device, 303-brush, 4-sprinkling device, 5-auxiliary suction pipe and 6-circulation waterway.

Detailed Description

The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The pneumatic conveying system as shown in fig. 1 and 2 comprises a box body 1, a dust suction device 2, a fan 3, a water sprinkling device 4, a secondary suction pipe 5, a circulating waterway 6 and the like, wherein the box body 1 comprises a garbage can 101, a sewage can 102, a primary suction pipe 103, a transition pipe 104, a filter window 105, a baffle 106 and a guide cover 107.

The sewage tank 102 is positioned at the lower part of the garbage tank 101; the filtering window 105 is provided with filtering layers, is positioned on two sides of the dustbin 101, is communicated with the dustbin 101 and the sewage tank 102, and can be used for filtering liquid to a certain extent.

The main suction pipe 103 is a double-layer pipe and is communicated with the 101 garbage can, the outer layer pipe 1031 is welded on the 101 garbage can, the inner layer pipe 1032 is made of wear-resistant materials such as rubber and is arranged on the inner side of the outer layer pipe 1031 and is fixed through the transition pipe 104, and quick-change installation can be achieved; the transition pipe 104 is arranged below the main suction pipe 103, the upper end of the transition pipe is communicated with the main suction pipe 103 and communicated with the garbage can 101 through the main suction pipe 103, and the lower end of the transition pipe is communicated with the dust suction device 2 to form a dust suction air channel.

Specifically, as shown in fig. 3, the transition pipe 104 is not a single pipe, and includes three parts, namely a lower connection pipe 1043, a sealing strip 1042, and an upper connection pipe 1041, wherein the lower connection pipe 1043 is communicated with the dust suction device 2, and a water outlet of the circulation water path 6 is arranged thereon. The upper connecting pipe 1041 is connected with the main suction pipe 3, the rubber inner pipe 1032 of the main suction pipe 3 is clamped between the upper connecting pipe 1041 and the outer pipe 1031 of the main suction pipe 103 for installation and fastening, and the installation interface of the auxiliary suction pipe 5 is arranged on the upper connecting pipe 1041. When it is necessary to replace the tube, the upper connection tube 1041 is removed, and the rubber inner tube 1032 of the main suction tube 103 is pulled out, replaced and then installed again. The sealing strips 1042 are mainly used for sealing the whole dust collection air duct when the box body 1 is lifted and falls down. The lower connecting pipe 1043 is fixed on the frame, the upper plane is provided with a groove, the sealing strip 1042 is fixed in the groove of the upper plane of the lower connecting pipe 1043, and the top of the sealing strip 1042 is in contact extrusion with the upper connecting pipe 1041; when the box body 1 is lifted, the upper connecting pipe 1041 is lifted together with the box body 1. When the box body 1 falls down, the sealing strips 1042 are pressed by the upper connecting pipe 1041 to realize the sealing of the whole air duct. The sealing strip 1042 is internally provided with a cavity, so that the extrusion allowance can be increased.

The baffle 106 is arranged at the upper outlet of the main suction pipe 103 and the upper part in the garbage can 101 and is used for settling the sucked garbage; specifically, as shown in fig. 4 and 5, the baffle 106 can be divided into two parts, one part is a rigid plate 1061, the top of which is directly welded to the garbage can 101, and the other part is a soft plate 1062 made of rubber, and the baffle can be quickly replaced by mounting the wedge structure on the groove of the rigid plate 1061. The soft plate 1062 can play a certain role in buffering the sucked garbage, and further prevent the garbage from directly contacting and colliding with the rigid part to generate certain sound. The baffle plate is integrally downwards inclined, a diversion plate 1063 in a human-shaped structure is arranged on the surface facing the outlet of the main suction pipe 103, and the sucked garbage is guided downwards to the bottom of the garbage can 101 and is diverted left and right to prevent the garbage from accumulating in the middle part and flowing back to the main suction pipe 103, so that the garbage is uniformly distributed in the garbage can 101.

The air guide sleeve 107 is arranged on the upper portion of the garbage can 101 and forms a special exhaust channel with the upper portion of the garbage can to guide exhausted air, the opening of the air guide sleeve is downward, the air exhausted by the fan 3 is guided downward to blow to the ground through the exhaust channel formed by the air guide sleeve, backward direct blowing is avoided, and influence on surrounding pedestrians during operation is reduced.

The dust collection device 2 comprises a suction cup 201 and a dust collection pipe 202, as shown in fig. 6 to 8, the suction cup 201 is of a V-shaped structure, the open end of the V-shape is a suction cup inlet, and the end with a V-shaped included angle is a suction cup outlet, so that garbage can be conveniently sucked and collected; the dust suction pipe 202 is a corrugated pipe, one end of which is communicated with the sucker outlet, and the other end of which is connected with the lower end of the transition pipe 104. The periphery of the sucker 201 is provided with an adjustable baffle 203, the distance between the sucker and the ground can be adjusted according to the road surface condition and the abrasion condition of other parts, and the distance is preferably kept within 1cm, so that a better sucking and picking effect is ensured; the opening end of the V-shaped structure is also provided with a foldable turning plate 204, the suction cup inlet is closed when the folding type vacuum suction cup is put down, a good negative pressure suction effect can be guaranteed, and the suction of large garbage can be carried out when the folding type vacuum suction cup is turned over.

As shown in fig. 1 and 9, the fan 3 is installed at the upper part of the dustbin 101 and can be driven to rotate by a motor, and other structures, an air inlet of the fan 3 extends into the dustbin 1 to draw air in the dustbin 101 out of the dustbin 1, and then negative pressure is formed inside the dustbin 101 to suck and pick up rubbish; the air inlet of the fan 3 is provided with a filter screen 301 which is communicated with the dustbin 101, so that large garbage can be prevented from entering the fan 3 and damaging the fan 3; the air outlet is positioned outside the dustbin 101, a fine filtering device with the aperture of 20-200 mu m is arranged at the air outlet and is communicated with the external space, fine particles, dust and the like brought by airflow can be further filtered, the fine filtering device can be detached and replaced, and accumulated dust can be cleaned regularly; the brush 303 is installed at the rotating part of the volute, and when the fan 3 works, the brush 303 rotates to filter fine particles, dust and the like in the air flow. Further, the fine filtering device 302 can be detached, so that the filtered dust is accumulated too much to influence the filtering effect, and the dust is effectively cleaned.

The inlet of the circulating water path 6 is connected with the bottom of the sewage tank 105, and water is discharged from the sewage tank 105; the delivery port sets up and sprays water in transition pipe 104's lower connecting pipe upper portion, forms fan-shaped water curtain, and it is moist to utilize sewage to carry out the secondary dust fall to the rubbish in the wind channel, reduces suspended particle dust etc. in the dustbin 101, and the centre is equipped with the control valve (not shown in the figure) of control water route intercommunication and disconnection, can break off the water route after fan 3 stop work, prevents that the circulation water route from working always to make sewage flow to ground once more.

In addition, the pneumatic conveying system also comprises a secondary suction pipe 5 mounted on the transition pipe 104. Under normal conditions, the auxiliary suction pipe 5 is arranged at the front part of the box body 1, and the outlet is sealed by a rubber plug, so that the normal suction of the main suction pipe 103 is not influenced. For larger garbage and garbage in the area where vehicles cannot enter, the dust collection device 2 cannot effectively suck, pick and work, and aiming at the situation, the auxiliary suction pipe 5 is additionally arranged, so that the larger garbage can be smoothly sucked and picked, and the garbage suction and pick operation can be carried out in the area where vehicles cannot enter. Furthermore, the auxiliary suction pipe 5 is a telescopic corrugated pipe, is arranged at the front part of the box body 1 in a compression mode in a normal state, and can be extended to perform suction and pickup operations within a certain range when in use. When the auxiliary suction pipe 5 works, the main suction pipe 103 can be selectively opened or closed, and if the suction force is insufficient, the air inlet at the lower part of the transition pipe 104 can be blocked by a partition plate, so that the 5 auxiliary suction pipes can work independently. In particular, when the sub-suction pipe 5 is operated alone, the circulation water path 6 is cut off while the main suction pipe 103 is cut off.

The working principle and the working process of the pneumatic conveying system are as follows:

the sprinkling device 4 is positioned at the front part of the dust suction device 2, and is used for sprinkling water for the first time to reduce dust, so that fan-shaped water mist can be formed, dust and other garbage on the ground can be wetted, and dust can be prevented from flying during sweeping; the blower 3 operates to discharge air in the dustbin 101 to the outside of the case 1, thereby forming a negative pressure in the dustbin 101. Under the action of negative pressure, wetted garbage is sucked from a suction cup 201 into a dust suction pipe 202, is sucked into a garbage can 101 through a transition pipe 104 and a main suction pipe 103, is settled and guided to the bottom of the garbage can after encountering a 106 baffle, internal airflow is discharged to the external environment after passing through a fan 3, after the garbage is settled in the garbage can 101, liquid part of the garbage is filtered through a filter window 105 and then enters a sewage tank 102, the sewage tank 102 is connected with the transition pipe 104 through a circulating water path 6, fan-shaped water mist is sprayed out of the transition pipe 104, the garbage passing through the transition pipe 104 is secondarily wetted and subjected to dust reduction, and existence of suspended particles and dust is reduced; the whole water route utilizes sewage after the suction filtration to carry out wetting dust fall once more to the rubbish of inhaling, greatly improves the water duration of complete machine and the existence of suspended particles, dust etc. in the rubbish, and 6 delivery ports of circulation water route set up on the lower connecting pipe upper portion of transition pipe 104, can prevent effectively that the sewage flow from leading to the fact secondary pollution to ground.

The invention also provides a road sweeper provided with the pneumatic conveying system, and when the road sweeper works, the adjustable baffle 203 on the sucker 201 is adjusted in advance, so that the dust suction device 2 is ensured to be tightly contacted with the ground, and the whole system is ensured to achieve a better operation effect.

Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and technical principles of the described embodiments, and such modifications and variations should also be considered as within the scope of the present invention.