CN211948178U - Sweeping machine circulation spraying dust fall system - Google Patents

Abstract

The utility model discloses a sweeping machine circulation spraying dust fall system belongs to sanitation equipment field. The utility model discloses a sweeping machine circulation spraying dust fall system utilizes fan suction to form negative pressure suction in the rubbish collection storehouse to absorb rubbish and dust, and heavier rubbish falls into the rubbish collection storehouse, and part dust gets into the dust settlement passageway through the fan, under the spraying effect of spraying dust filtration unit, cooperates with the filtration of elastic packing, subsides the dust, has avoided the secondary pollution of raise dust; the settled sewage is filtered by the sewage filter box and then is conveyed to the spray dust filtering unit again by the water pump for recycling, so that the water consumption is low; moreover, the elastic filler is adopted, so that the dust spraying sedimentation effect is ensured, meanwhile, the air resistance is reduced, the fan with small full pressure can be selected, the operation energy consumption of the sweeping machine is reduced, and the high-endurance pure electric of the sweeping machine can be realized; and the elastic filler is in a brush-shaped structure, so that the washing and cleaning are convenient.

Description

Sweeping machine circulation spraying dust fall system

Technical Field

The utility model relates to a sanitation is with sweeping machine, more specifically says, relates to a sweeping machine circulation spraying dust fall system.

Background

The sweeping machine is a special vehicle for environmental sanitation, which is used for clearing, collecting and conveying dirt such as road surface garbage, dust and the like, has the advantages of high working efficiency, low cleaning cost, good cleaning effect, high safety performance, high economic return rate and the like, effectively improves the environmental sanitation level of cities, reduces the labor intensity of sanitation workers, improves the health condition of the sanitation workers, and is widely applied to the cleaning work of roads in various large, medium and small cities.

Raise dust in the working process of the sweeping machine mainly appears in the sweeping disc sweeping process and dust enters the collecting box and is discharged from the air outlet, and the raise dust can cause secondary pollution to the environment. The dust in the sweeping process of the sweeping disc is suppressed by installing a nozzle on the chassis of the sweeping vehicle and spraying water mist to the position near the sweeping disc or on the road surface. The dust in the collecting box is mainly filtered through the filter cotton in the collecting box, but the mode of filtering the filter cotton is poor in dust suppression effect, and the filter cotton is troublesome to replace and clean. Aiming at dust suppression of the collecting box, at present, a spray dust reduction mode is also provided, for example, Chinese patent application No. 201811016328.7, the application publication date is 11 and 23 in 2018, and the invention creation name is as follows: the utility model provides a sweeping machine with dust absorption function, this application relates to a sweeping machine with dust absorption function, including the locomotive, the carriage, the wheel, drinking-water pipe and circulating pipe, the connection pad is installed in one side that is close to the locomotive in the bottom in carriage, the bottom of connection pad is provided with a plurality of mechanisms that clean, the inside in carriage is provided with the dust removal case, the bottom of dust removal case is connected with the dust absorption pipeline, the vertical downward setting of the other end of dust absorption pipeline is in the carriage bottom, the one-level suction fan is installed to the bottom mouth position of dust absorption pipeline, the second grade suction fan is installed with the top junction in carriage in the top of dust removal case, the water tank is installed to one side of dust removal case, the drinking-water union coupling is passed through on the upper portion of water tank and the upper portion in dust removal case, install the suction pump on the. This application adopts the mode that the spraying presses down dirt, and usable water circulation removes dust, and rubbish and dust can not effectively be separated, and rubbish blocks up the difficult clearance of filter screen, and utilizes spraying and dust contact to press down dirt completely, has the part not to follow the condition that the suction fan suction was gone out with the raise dust of water smoke contact, and the dust suppression effect is not good enough.

In addition, in order to meet the requirements of energy conservation and environmental protection, the passenger vehicle is developing towards new energy, a plurality of pure electric vehicles appear, and special vehicles are developing towards pure electric. For a road sweeper, the main difficulty of pure electrification is energy consumption in the process of sweeping and dust collection of a vehicle, working energy consumption is not considered in the sweeping and dust collection system of the existing fuel oil road sweeper, the power consumption is very high, the cruising time of the pure electric road sweeper is greatly shortened, and the sweeping requirement of urban roads cannot be met because part of the existing pure electric road sweeper can only work for about 2 hours. Therefore, the dust collection system of the existing sweeping machine needs to be optimally designed, and the running energy consumption is reduced under the condition of effectively inhibiting the dust.

Disclosure of Invention

1. Technical problem to be solved by the utility model

The utility model aims to overcome the defects of poor dust suppression effect, inconvenient cleaning of a filtering device, high operation energy consumption and the like in a garbage collecting box of the existing sweeping machine, and provides a circulating spraying dust suppression system of the sweeping machine, which adopts the technical scheme of the utility model, a fan suction effect forms negative pressure suction force in a garbage collecting bin to absorb garbage and dust, heavier garbage falls into the garbage collecting bin, part of dust enters a dust settling channel through the fan, and under the spraying effect of a spraying dust filtering unit, the contact of the dust, water mist and elastic filler is increased by matching the filtering effect of the elastic filler, the dust is settled, the secondary pollution of raised dust is avoided, the dust is settled more thoroughly, and the dust suppression effect is better; the settled sewage is filtered by the sewage filter box and then is conveyed to the spray dust filtering unit again by the water pump for recycling, so that the water consumption is low; moreover, the elastic filler is adopted, so that the dust spraying sedimentation effect is ensured, meanwhile, the air resistance is reduced, the fan with small full pressure can be selected, the operation energy consumption of the sweeping machine is reduced, and the high-endurance pure electric of the sweeping machine can be realized; and the elastic filler is in a brush-shaped structure, so that the washing is convenient, and the cleaning is convenient and quick.

2. Technical scheme

In order to achieve the above purpose, the utility model provides a technical scheme does:

the utility model discloses a sweeping machine circulation spraying dust fall system installs in the railway carriage of sweeping machine, the railway carriage in have rubbish collection storehouse, fan installation storehouse, dust subside the passageway and go out the wind storehouse, rubbish collection storehouse in be equipped with the suction tube that is connected to the railway carriage bottom, fan installation storehouse in install the fan, the air intake of fan be linked together with rubbish collection storehouse, the air outlet of fan is linked together with the one end that the passageway was subsided to the dust, the other end that the passageway was subsided to the dust is linked together with going out the wind storehouse, go out the wind storehouse and locate the air outlet of railway carriage top and be linked together, dust subside the passageway and locate the below that fan installation storehouse, dust subside the passageway in be equipped with spraying dust filtration unit, spraying dust filtration unit include water spray frame pipe and elastic packing, elastic packing densely distribute on the support body of water spray frame pipe, the spraying frame pipe on be equipped with a plurality of water spray nozzles, the below of spraying dust filtration unit be equipped with sewage rose box, sewage rose box on have a sewage filter screen, sewage rose box pass through wet return and connect spraying frame pipe, and be equipped with on the wet return and be used for sending the water pump in the sewage rose box to the intraductal water pump of spraying frame.

Furthermore, the water return pipe is a hose, and the spraying dust filtering unit is detachably inserted in the dust settling channel.

Furthermore, the water spray nozzles on the water spray frame pipe are fan-shaped nozzles.

Furthermore, the water pump is arranged inside the sewage filtering box, and the water return pipe is also provided with a filter.

Furthermore, a drain valve is arranged at the bottom of the air outlet bin.

Furthermore, a clean water tank is also arranged in the carriage and is connected to a water inlet of the sewage filter tank through a water supply control pipeline.

Furthermore, the garbage collection bin is arranged at the rear part of the carriage, a tail door is further arranged at the tail part of the carriage, the fan installation bin, the dust sedimentation channel, the sewage filter box and the air outlet bin are all arranged at the middle part of the carriage, and the clean water tank is arranged at the front part of the carriage.

Furthermore, the driving motor of the fan is a brushless direct current motor.

Furthermore, an air filter screen is further arranged in the garbage collection bin and separates the garbage collection bin from the fan installation bin.

Furthermore, a baffle plate back to the air inlet of the fan is arranged at the pipe orifice at the upper end of the suction pipe.

3. Advantageous effects

Adopt the technical scheme provided by the utility model, compare with existing well-known technique, have following beneficial effect:

(1) the utility model discloses a sweeping machine circulation spraying dust fall system, it is installed in the railway carriage of sweeping machine, utilize fan suction effect to form negative pressure suction in rubbish collection bin and absorb rubbish and dust, heavier rubbish falls into rubbish collection bin, and part dust gets into dust settlement channel through the fan, under the spraying effect of spraying dust filtration unit, cooperates with the filtering action of elastic packing, has increased the contact of dust with water smoke and elastic packing, subsides the dust, has avoided the secondary pollution of raise dust, and the dust subsides more thoroughly, and the dust suppression effect is better; the settled sewage is filtered by the sewage filter box and then is conveyed to the spray dust filtering unit again by the water pump for recycling, so that the water consumption is low; moreover, the elastic filler is adopted, so that the dust spraying sedimentation effect is ensured, meanwhile, the air resistance is reduced, the fan with small full pressure can be selected, the operation energy consumption of the sweeping machine is reduced, and the high-endurance pure electric of the sweeping machine can be realized; the elastic filler is in a hairbrush-shaped structure, so that the washing is convenient, and the cleaning is convenient and quick;

(2) the utility model discloses a sweeping machine circulation spraying dust fall system, its wet return is the hose, and spraying dust filtration unit detachably cartridge is in the dust settlement passageway, and spraying dust filtration unit easy dismounting can take out spraying dust filtration unit and wash, and it is simple and convenient to wash;

(3) the utility model discloses a sweeping machine circulation spraying dust fall system, the water spout on its water spray frame pipe is fan-shaped nozzle, and the spraying surface is big, and the spraying is dispersed evenly, has effectively inhibited the raise dust;

(4) the utility model discloses a sweeping machine circulation spraying dust fall system, its water pump is installed in the interior of sewage filter tank, still is equipped with the filter on the wet return, utilizes the water pump circulation to spray the dust fall, utilizes the filter further to filter the filth in the sewage filter tank, prevents to block up the water spout on the water spray frame pipe;

(5) the utility model discloses a sweeping machine circulation spraying dust fall system, its bottom that goes out the wind storehouse still is equipped with the blowoff valve, is convenient for the discharge of sewage, and easy operation is convenient;

(6) the utility model discloses a sweeping machine circulation spraying dust fall system, still be equipped with the clear water tank in its railway carriage, the clear water tank is connected to the water inlet of sewage rose box through the water supply control pipeline, utilizes the clear water tank to provide clear water in the sewage rose box, is convenient for the replenishment of circulation spraying water;

(7) the utility model discloses a sweeping machine circulation spraying dust fall system, its rubbish collection storehouse is located the rear portion of railway carriage, still is equipped with the tail-gate at the afterbody of railway carriage, and fan installation storehouse, dust subside the passageway, sewage rose box and go out the wind storehouse and all locate the middle part of railway carriage, and the clean water tank is located the front portion of railway carriage, and structural design is simple compact, arranges rationally, and the operation is nimble convenient;

(8) the utility model discloses a sweeping machine circulation spraying dust fall system, the driving motor of its fan adopts direct current brushless motor, small, light in weight, long service life and energy consumption are low, drive the little fan operation of full pressure, the operation is reliable and stable, the operation energy consumption is low;

(9) the utility model discloses a sweeping machine circulation spraying dust fall system, still be equipped with airstrainer in its rubbish collection storehouse, airstrainer separates rubbish collection storehouse and fan installation storehouse, utilizes airstrainer can effectively filter bigger rubbish such as leaf, prevents that bigger rubbish from getting into fan and spraying dust filtration unit and causing the circumstances such as jam;

(10) the utility model discloses a sweeping machine circulation spraying dust fall system, the upper end mouth of pipe department of its suction tube still is equipped with the baffle back to the fan air intake, can further block rubbish and inhale to the fan direction, effectively subsides great rubbish.

Drawings

Fig. 1 is a schematic view of a top view structure of a circulating spraying dust-settling system of a sweeping machine of the present invention;

FIG. 2 is a schematic sectional view taken along the line A-A in FIG. 1;

fig. 3 is a schematic sectional view in the direction B-B in fig. 2.

The reference numerals in the schematic drawings illustrate:

1. a carriage; 1-1, a garbage collection bin; 1-2, a fan installation bin; 1-3, a dust settling channel; 1-4, an air outlet bin; 2. an air outlet; 3. a tailgate; 4. a suction tube; 4-1, a baffle; 5. an air filter screen; 6. a fan; 7. a spray dust filtration unit; 7-1, spraying water frame pipes; 7-2, elastic filler; 8. a sewage filtering tank; 8-1, sewage filtering net; 8-2 parts of a water inlet; 9. a water return pipe; 10. a filter; 11. a clear water tank; 12. a water pump; 13. a blowoff valve.

Detailed Description

For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples.

Examples

Referring to fig. 1, 2 and 3, the circulating spraying dust-settling system of the sweeping vehicle of the present embodiment is installed in a vehicle box 1 of the sweeping vehicle, the vehicle box 1 is installed on a chassis of the vehicle and is driven by a vehicle driving mechanism to travel, and a rotary-driven sweeper is arranged on the chassis of the vehicle. Different from the prior sweeping machine, the sweeping machine is characterized in that a garbage collection bin 1-1, a fan installation bin 1-2, a dust settling channel 1-3 and an air outlet bin 1-4 are arranged in a carriage 1, a suction pipe 4 connected to the bottom of the carriage 1 is arranged in the garbage collection bin 1-1, a fan 6 is arranged in the fan installation bin 1-2, an air inlet of the fan 6 is communicated with the garbage collection bin 1-1, an air outlet of the fan 6 is communicated with one end of the dust settling channel 1-3, the other end of the dust settling channel 1-3 is communicated with the air outlet bin 1-4, the air outlet bin 1-4 is communicated with an air outlet 2 arranged at the top of the carriage 1, the dust settling channel 1-3 is arranged below the fan installation bin 1-2, a spray dust filtering unit 7 is arranged in the dust settling channel 1-3, the spray dust filtering unit 7 comprises a water spray frame pipe 7-1 and an elastic filler 7, the elastic filler 7-2 can adopt the existing three-dimensional elastic filler for sewage treatment and has an elastic brush structure, the elastic filler 7-2 is densely distributed on the frame body of the water spraying frame pipe 7-1, a ventilating space is formed between the elastic fillers 7-2, and the brush of the elastic filler 7-2 has a blocking effect on dust in air and has a very good sedimentation effect on dust in air in cooperation with a spraying effect; the water spraying frame pipe 7-1 is provided with a plurality of water spraying nozzles, the water spraying nozzles can be uniformly distributed on the water spraying frame pipe 7-1 at intervals, the water spraying frame pipe 7-1 can be designed into an upper layer and a lower layer to form an integral frame structure, the elastic filler 7-2 is uniformly fixed on the frame structure of the water spraying frame pipe 7-1, the water spraying nozzles preferably adopt fan-shaped nozzles, the spraying surface is large, the spraying dispersion is uniform, and the raised dust is effectively inhibited; a sewage filtering box 8 is arranged below the spray dust filtering unit 7, a sewage filtering screen 8-1 is arranged on the sewage filtering box 8, in the embodiment, the sewage filtering box 8 can be assembled into a rectangular box body by adopting the sewage filtering screen 8-1, the sewage filtering screen 8-1 can adopt a 100-mesh steel wire mesh, sewage settled by the spray dust filtering unit 7 is filtered by the sewage filtering screen 8-1 and then stored in the sewage filtering box 8, the sewage flows to the bottom of the air outlet bin 1-4, and in order to facilitate the rapid flow of the sludge, the upper part of the sewage filtering box 8 is preferably designed to be inclined towards the air outlet bin 1-4 direction, so that the sludge can flow conveniently; the sewage filtering tank 8 is connected with the water spraying frame pipe 7-1 through the water return pipe 9, the water return pipe 9 is provided with a water pump 12 for pumping water in the sewage filtering tank 8 to the water spraying frame pipe 7-1, and the water pump 12 is utilized to send the filtered water in the sewage filtering tank 8 to the water spraying frame pipe 7-1 for recycling, so that the water consumption is reduced; when the device works, the horizontal plane at the bottom of the air outlet bin 1-4 slightly submerges the upper side surface of the sewage filter box 8, and the water at the bottom of the air outlet bin 1-4 is communicated with the sewage filter box 8 through the sewage filter screen 8-1, so that the settled sewage is recycled after being filtered. By adopting the scheme, the suction action of the fan is utilized to form negative pressure suction force in the garbage collection bin 1-1 to suck garbage and dust, heavier garbage falls into the garbage collection bin, part of dust enters the dust settling channel 1-3 through the fan, and under the spraying action of the spraying dust filtering unit 7, the contact of the dust with water mist and the elastic filler 7-2 is increased by matching with the filtering action of the elastic filler 7-2, so that the dust is settled, the secondary pollution of raised dust is avoided, the dust settling is more thorough, and the dust suppression effect is better; the settled sewage is filtered by the sewage filter box and then is conveyed to the spray dust filtering unit 7 again by the water pump for recycling, so that the water consumption is low; moreover, the elastic filler is adopted, so that the dust spraying sedimentation effect is ensured, meanwhile, the air resistance is reduced, the fan with small full pressure can be selected, the operation energy consumption of the sweeping machine is reduced, and the high-endurance pure electric of the sweeping machine can be realized; and the elastic filler 7-2 is in a brush-shaped structure, so that the washing is convenient, and the cleaning is convenient and quick.

According to the circulating spraying dust-settling system of the sweeping vehicle, the water return pipe 9 is a hose, the spraying dust-filtering unit 7 is detachably inserted into the dust settling channel 1-3, and the spraying dust-filtering unit 7 can be pulled out from the dust settling channel 1-3 for washing, so that the cleaning is simple and convenient; after cleaning, the dust collector can be directly inserted into the dust settling channels 1-3, and is convenient and fast to install. As shown in fig. 2 and 3, in the present embodiment, a water pump 12 is installed inside the sewage filtering tank 8, a filter 10 is further provided on the water return pipe 9, the water pump 12 circulates to perform spray dust fall, and the filter 10 further filters off dirt in the sewage filtering tank 8 to prevent clogging of the water nozzle on the water spraying frame pipe 7-1. In order to facilitate the cleaning of the sludge, the bottom of the air outlet bin 1-4 is also provided with a blowoff valve 13, the blowoff valve 13 can be arranged at the lowest position of the air outlet bin 1-4, the muddy water can be discharged by opening the blowoff valve 13, the discharge of the sewage is facilitated, and the operation is simple and convenient. As shown in fig. 2, a clean water tank 11 is further arranged in the carriage 1, the clean water tank 11 is connected to a water inlet 8-2 of the sewage filter tank 8 through a water supply control pipeline, before the sweeping machine works, clean water can be injected into the sewage filter tank 8 through the clean water tank 11, the clean water overflows to a position where the water level is slightly higher than the upper surface of the sewage filter tank 8, and the clean water tank 11 is used for providing clean water for the sewage filter tank 8, so that the supplement of circulating spraying water is facilitated. The clean water tank 11 is also used for spraying and dedusting of a sweeping brush on a chassis of the sweeping machine, and the sludge at the bottom of the air outlet bin 1-4 can be washed by clean water in the clean water tank 11. The structural design of the sweeper spray and the clear water washing is the same as that of the existing sweeper truck, and the description is omitted.

Referring to fig. 2, in the present embodiment, the garbage collection bin 1-1 is disposed at the rear portion of the compartment 1, and a tail door 3 is further disposed at the tail portion of the compartment 1, so as to facilitate discharging of garbage in the garbage collection bin 1-1; the blower installation bin 1-2, the dust settling channel 1-3, the sewage filter box 8 and the air outlet bin 1-4 are all arranged in the middle of the carriage 1, and the clean water tank 11 is arranged in the front of the carriage 1. An air filter screen 5 is further arranged in the garbage collection bin 1-1, the garbage collection bin 1-1 is separated from the fan installation bin 1-2 by the air filter screen 5, the air filter screen 5 can be a filter screen with a large aperture and is good in air permeability, larger garbage such as leaves can be effectively filtered by the air filter screen 5, and the larger garbage is prevented from entering the fan and spraying dust filtration units to cause blockage and the like. Furthermore, a baffle 4-1 back to the air inlet of the fan 6 is arranged at the upper end pipe orifice of the suction pipe 4, so that the garbage can be further prevented from being sucked towards the fan, and the larger garbage can be effectively settled.

Because the dust filtering unit 7 is adopted to replace the existing filter cotton to filter dust in the embodiment, the elastic filler 7-2 has good air permeability, and the dust is filtered more thoroughly by matching with the spraying effect, the power of the fan can be reduced while the dust filtering effect is ensured, so that the fan with smaller full pressure can be adopted, the operation energy consumption is reduced, and the dust filtering unit is particularly suitable for pure electric sweeping machines. Further preferably, the driving motor of the fan 6 is a brushless direct current motor, and has the advantages of small size, light weight, long service life, low energy consumption, stable and reliable operation and low operation energy consumption when driving the fan to operate.

The utility model discloses a sweeping machine circulation spraying dust fall system especially is applicable to 2 ~ 3 t's electricelectric sweeping machine, and the operation energy consumption is low, and the time of endurance is long. When the dust-collecting and dust-filtering device works, the fan 6 operates in the dust-collecting bin 1-1 to form negative pressure, swept dust is sucked through the suction pipe 4, the dust and dust enter the dust-collecting bin 1-1, heavier dust and dust are settled at the bottom of the dust-collecting bin 1-1 under the action of gravity, lighter dust is filtered through the air filter screen 5 along with air, enters the dust settling channel 1-3 and is blown to the spray dust-filtering unit 7, the water spray frame pipe 7-1 in the spray dust-filtering unit 7 sprays water mist to the elastic filler 7-2 under the action of the water pump 12, dust-containing air passes through the elastic filler 7-2, the dust is settled through the elastic filler 7-2 and the water mist filtering to form dust, and purified air is discharged from the air outlet bin 1-4 upwards through the air outlet 2; the muddy water is primarily filtered by the sewage filter tank 8, cleaner water and silt after filtering are separated by the sewage filter tank 8, the silt is deposited at the bottom of the air outlet bin 1-4, and the cleaner water is circularly pumped into the water spraying frame pipe 7-1 by the water pump 12 to be sprayed and dusted. After the work is finished, the sludge can be discharged through the blow-down valve 13, the spraying dust filtering unit 7 is drawn out from the dust settling channel 1-3, the spraying dust filtering unit 7 is washed by the spray head, and the washed sewage can be discharged from the blow-down valve 13.

The utility model discloses a sweeping machine circulation spraying dust fall system, it is installed in the railway carriage of sweeping machine, utilize fan suction effect to form negative pressure suction in rubbish collection bin and absorb rubbish and dust, heavier rubbish falls into rubbish collection bin, and part dust gets into dust settlement channel through the fan, under the spraying effect of spraying dust filtration unit, cooperates with the filtering action of elastic packing, has increased the contact of dust with water smoke and elastic packing, subsides the dust, has avoided the secondary pollution of raise dust, and the dust subsides more thoroughly, and the dust suppression effect is better; the settled sewage is filtered by the sewage filter box and then is conveyed to the spray dust filtering unit again by the water pump for recycling, so that the water consumption is low; moreover, the elastic filler is adopted, so that the dust spraying sedimentation effect is ensured, meanwhile, the air resistance is reduced, the fan with small full pressure can be selected, the operation energy consumption of the sweeping machine is reduced, and the high-endurance pure electric of the sweeping machine can be realized; and the elastic filler is in a brush-shaped structure, so that the washing is convenient, and the cleaning is convenient and quick.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

The present invention and its embodiments have been described above schematically, and the description is not intended to be limiting, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without creatively designing the similar structural modes and embodiments to the technical solutions, they should belong to the protection scope of the present invention.

Claims (10)

1. The utility model provides a sweeping machine circulation spraying dust fall system installs in railway carriage (1) of sweeping machine, its characterized in that: the garbage collection device is characterized in that a garbage collection bin (1-1), a fan installation bin (1-2), a dust sedimentation channel (1-3) and an air outlet bin (1-4) are arranged in the truck bed (1), a suction pipe (4) connected to the bottom of the truck bed (1) is arranged in the garbage collection bin (1-1), a fan (6) is arranged in the fan installation bin (1-2), an air inlet of the fan (6) is communicated with the garbage collection bin (1-1), an air outlet of the fan (6) is communicated with one end of the dust sedimentation channel (1-3), the other end of the dust sedimentation channel (1-3) is communicated with the air outlet bin (1-4), the air outlet bin (1-4) is communicated with an air outlet (2) arranged at the top of the truck bed (1), the dust sedimentation channel (1-3) is arranged below the fan installation bin (1-2), a spraying dust filtering unit (7) is arranged in the dust settling channel (1-3), the spraying dust filtering unit (7) comprises a water spraying frame pipe (7-1) and an elastic filler (7-2), the elastic filler (7-2) is densely distributed on the frame body of the water spraying frame pipe (7-1), a plurality of water spraying nozzles are arranged on the water spraying frame pipe (7-1), a sewage filtering box (8) is arranged below the spraying dust filtering unit (7), the sewage filtering tank (8) is provided with a sewage filtering screen (8-1), the sewage filtering tank (8) is connected with a water spraying frame pipe (7-1) through a water return pipe (9), and a water pump (12) for pumping water in the sewage filter tank (8) to the water spraying frame pipe (7-1) is arranged on the water return pipe (9).

2. The circulating spraying dust settling system of the sweeping vehicle of claim 1, wherein: the water return pipe (9) is a hose, and the spraying dust filtering unit (7) is detachably inserted in the dust settling channel (1-3).

3. The circulating spraying dust settling system of the sweeping vehicle of claim 2, wherein: the water spray nozzles on the water spray frame pipes (7-1) are fan-shaped nozzles.

4. The circulating spraying dust settling system of the sweeping vehicle of claim 1, wherein: the water pump (12) is arranged in the sewage filtering tank (8), and the water return pipe (9) is also provided with a filter (10).

5. The circulating spraying dust settling system of the sweeping vehicle of claim 1, wherein: and a blow-down valve (13) is also arranged at the bottom of the air outlet bin (1-4).

6. The circulating spraying dust settling system of the sweeping vehicle of claim 1, wherein: the water purifier is characterized in that a clear water tank (11) is further arranged in the carriage (1), and the clear water tank (11) is connected to a water inlet (8-2) of the sewage filter tank (8) through a water supply control pipeline.

7. The circulating spraying dust settling system of the road sweeper of claim 6, wherein: the garbage collecting bin (1-1) is arranged at the rear part of the carriage (1), the tail part of the carriage (1) is also provided with a tail door (3), the fan mounting bin (1-2), the dust settling channel (1-3), the sewage filtering box (8) and the air outlet bin (1-4) are all arranged in the middle of the carriage (1), and the clean water tank (11) is arranged at the front part of the carriage (1).

8. The circulating spray dedusting system of the road sweeper according to any one of claims 1-7, characterized in that: the driving motor of the fan (6) adopts a direct current brushless motor.

9. The circulating spraying dust settling system of the road sweeper of claim 8, wherein: an air filter screen (5) is further arranged in the garbage collection bin (1-1), and the garbage collection bin (1-1) and the fan installation bin (1-2) are separated by the air filter screen (5).

10. The circulating spray dust settling system of the road sweeper of claim 9, wherein: and a baffle (4-1) back to the air inlet of the fan (6) is also arranged at the upper end pipe orifice of the suction pipe (4).

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