CN111705730A - Back-blowing type washing and sweeping vehicle - Google Patents
Back-blowing type washing and sweeping vehicle Download PDFInfo
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- CN111705730A CN111705730A CN202010495439.1A CN202010495439A CN111705730A CN 111705730 A CN111705730 A CN 111705730A CN 202010495439 A CN202010495439 A CN 202010495439A CN 111705730 A CN111705730 A CN 111705730A
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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
- E01H1/10—Hydraulically loosening or dislodging undesirable matter; Raking or scraping apparatus ; Removing liquids or semi-liquids e.g., absorbing water, sliding-off mud
- E01H1/101—Hydraulic loosening or dislodging, combined or not with mechanical loosening or dislodging, e.g. road washing machines with brushes or wipers
- E01H1/103—Hydraulic loosening or dislodging, combined or not with mechanical loosening or dislodging, e.g. road washing machines with brushes or wipers in which the soiled loosening or washing liquid is removed, e.g. by suction
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Abstract
The invention discloses a back-blowing type washing and sweeping vehicle, which comprises: the suction nozzle is internally provided with a suction cavity and a mounting cavity, the suction cavity is communicated with a dustbin, the dustbin is communicated with a suction fan, and the mounting cavity is internally provided with a high-pressure water spraying device and a back blowing device. The high-pressure water spraying device is used for spraying high-pressure water to the road surface close to the suction cavity to wash the road surface. The suction fan is used for sucking gathered garbage and water flow on the corresponding road surface of the mounting cavity into the suction picking cavity to form garbage-containing airflow, enabling the garbage-containing airflow to enter the garbage can again for settlement and filtration, the exhaust end of the suction fan is connected with a dust exhaust pipeline, and the suction fan is also used for enabling dust-containing water vapor to be discharged to the road surface through the dust exhaust pipeline at a low position. The back blowing device is used for supplying back blowing airflow and enabling the back blowing airflow to blow back to the road surface close to the suction cavity, so that sewage flowing from the suction cavity to the installation cavity and flushing water generated after the high-pressure water spraying device flushes the road surface are blown into the covering area of the suction cavity reversely.
Description
Technical Field
The invention relates to the technical field of washing and sweeping vehicles, in particular to a back blowing type washing and sweeping vehicle.
Background
The washing and sweeping vehicle is used as the vehicle type with the best road surface cleaning effect in the environmental sanitation cleaning vehicle, has huge market demand and reserve, and is the most reliable weapon for urban environment protection. Along with social development, people have higher and higher requirements on urban environment, and more concern is given to various problems, such as the problem of comb printing, the problem of secondary dust exhaust and the like.
The existing washing and sweeping vehicle structure mainly comprises a fan, a garbage can, a suction nozzle, a sweeping disc, a high-pressure water spraying device and the like, when the washing and sweeping vehicle works, the sweeping disc firstly gathers garbage right ahead the suction nozzle, then the suction nozzle and the high-pressure water spraying device act simultaneously to convey the garbage into the garbage can, most of the garbage is left in the garbage can, and a small part of dust-containing water vapor enters the fan along with air flow and is finally discharged into the atmosphere at a position higher than the ground. There are the following problems:
1. the dust-containing water vapor is directly discharged into the atmosphere at a higher position away from the ground and drifts away with the wind in the atmosphere, so that secondary pollution to the environment is caused;
2. after the washing and sweeping vehicle operates through the high-pressure water spraying device, a dirty water belt (comb print) can be retained on the road surface, and the washing and sweeping effect of the road surface is seriously influenced.
Disclosure of Invention
The invention provides a back-blowing type washing and sweeping vehicle, which aims to solve the technical problems that the secondary pollution of the environment is caused by the high-temperature discharge of dust-containing water vapor and the comb printing type sewage belt is retained on the road surface after the operation of the washing and sweeping vehicle in the prior washing and sweeping vehicle.
The technical scheme adopted by the invention is as follows:
a blowback type washing and sweeping vehicle comprising: the suction nozzle is internally provided with a suction cavity and a mounting cavity which are sequentially arranged from front to back along the running direction of the vehicle, the suction cavity is also communicated with a garbage can, the garbage can is communicated with a suction fan, the mounting cavity is internally provided with a high-pressure water spraying device and a back blowing device, and the suction fan, the high-pressure water spraying device and the back blowing device are respectively connected with the control device; the high-pressure water spraying device is used for spraying high-pressure water to the road surface close to the suction cavity to wash the road surface and enabling the high-pressure water to carry raised dust to enter a covering area of the suction cavity; the suction fan is used for sucking garbage gathered in front of the suction nozzle and water flow on a road surface corresponding to the mounting cavity into the suction pick-up cavity to form garbage-containing air flow, enabling the garbage-containing air flow to enter the garbage can again for sedimentation and filtration, the air exhaust end of the suction fan is connected with a dust exhaust pipeline, and the suction fan is also used for enabling dust-containing water vapor in the garbage-containing air flow subjected to sedimentation and filtration by the garbage can to be discharged to the road surface at a low position through the dust exhaust pipeline; the back blowing device is used for supplying back blowing airflow and enabling the back blowing airflow to blow back to the road surface close to the suction cavity, so that sewage flowing from the suction cavity to the installation cavity and flushing water generated after the high-pressure water spraying device flushes the road surface are blown into the covering area of the suction cavity reversely.
Further, the suction picking cavity is communicated with the dustbin through a suction conveying pipeline connected to the top of the suction picking cavity; the dustbin is communicated with the suction end of the suction fan through a dust-containing water vapor pipeline; the air exhaust end of the suction fan is communicated with the inlet end of the dust exhaust pipeline, and the outlet end of the dust exhaust pipeline faces the ground so as to ensure that the dust-containing water vapor exhausted by the suction fan reaches the ground.
Furthermore, the high-pressure water spraying device and the back blowing device are arranged in parallel at intervals along the running direction of the vehicle, the back blowing device is positioned behind the high-pressure water spraying device, and the distance between the high-pressure water spraying device and the back blowing device is 30-60 mm; or the output direction of the back blowing device is inclined towards the direction of the suction cavity, so that the back blowing air flow output by the back blowing device and the high-pressure water output by the high-pressure water spraying device are in synergistic action, and further, the sewage flowing from the suction cavity to the installation cavity and the flushing water after the high-pressure water spraying device flushes the road surface are reversely blown into the suction cavity.
Further, the high pressure water spray device includes a plurality of high pressure water nozzles, and a washing water supply tank for supplying washing water; the plurality of high-pressure water nozzles are sequentially arranged at intervals in the width direction of the vehicle, and are respectively connected with the washing water supply tank and the control device.
Furthermore, a high-pressure water spraying water curtain formed by spraying of the high-pressure water nozzle is fan-shaped along the width direction of the vehicle; the road surface coverage width of the single high-pressure water spray curtain in the width direction of the vehicle is L; two adjacent high-pressure water spray water curtains are provided with water flow overlapping areas with the width of B in the width direction of the vehicle.
Furthermore, the back-blowing device comprises a back-blowing fan for supplying back-blowing airflow and a plurality of airflow nozzles which are respectively communicated with the back-blowing fan, the back-blowing fan and the airflow nozzles are respectively connected with the control device, and the airflow nozzles are sequentially arranged at intervals along the width direction of the vehicle; or the back blowing device comprises a back blowing fan used for supplying back blowing airflow and an airflow nozzle communicated with the back blowing fan, the back blowing fan and the airflow nozzle are respectively connected with the control device, and the airflow nozzle is provided with a plurality of airflow nozzles which are sequentially arranged at intervals along the width direction of the vehicle.
Furthermore, a back-blowing airflow air curtain formed by spraying of the back-blowing device through the airflow nozzle or the airflow nozzle is fan-shaped along the width direction of the vehicle; the two adjacent blowback airflow air curtains are provided with airflow superposition areas with the width of D in the width direction of the vehicle, the airflow superposition areas are airflow high-speed areas with high airflow speed, and the areas between the two adjacent airflow superposition areas are airflow low-speed areas with low airflow speed; the airflow high-speed area and the water flow superposition area are correspondingly arranged one by one.
Further, the width B of the water flow overlapping region < the width D of the air flow overlapping region <1/3 road surface coverage width L of the high-pressure water spray curtain.
Further, VVehicle height<VWater is not low<VWater level is high<VQi is not low<VHigh degree of qiWherein: vVehicle height-maximum travel speed of the vehicle during operation; vWater is not low-the minimum water velocity of the non-overlapping zones of water flow (low velocity zones); vWater level is high-the maximum water flow velocity in the non-overlapping regions of water flow (low velocity regions); vQi is not low-the lowest gas flow velocity of the non-overlapping zones of gas flow (low velocity zones); vHigh degree of qi-the highest gas flow velocity of the non-overlapping zones of the gas flow (low velocity zones).
Further, VHigh degree of qi<VThe water stack is low<VHeight of water stack<VAir stack is low<VGas stack heightWherein: vThe water stack is low-minimum water velocity of the water flow superposition zone (high velocity zone); vHeight of water stack-the maximum water velocity of the water flow superposition zone (high velocity zone); vAir stack is low-lowest gas flow velocity in the gas flow overlap zone (high velocity zone); vGas stack height-the highest gas flow velocity in the gas flow overlap zone (high velocity zone).
Furthermore, the back-blowing device comprises a back-blowing fan and an airflow nozzle, the back-blowing fan is used for supplying back-blowing airflow, the airflow nozzle is communicated with the back-blowing fan, the back-blowing fan and the airflow nozzle are respectively connected with the control device, and the airflow nozzle is provided with blowing seams distributed along the width direction of the vehicle.
Further, the length of the back-blowing air curtain blown out from the blowing gap along the width direction of the vehicle is larger than that of the back-blowing air curtainThe sum of the road surface coverage widths of all the high-pressure water spraying water curtains in the width direction of the vehicle; the width of the blowing seam is 0.05 mm-6 mm; average air speed V of back-blowing air curtainMean qi>1.2 times of average water velocity V of middle area of single high-pressure water spray curtainAverage of water。
The invention has the following beneficial effects:
when the back blowing type washing and sweeping vehicle works, the missed sewage and the flushing water can be pushed forwards into the suction and pickup cavity for secondary suction by utilizing higher back blowing airflow, so that comb marks are eliminated, and the suction and pickup capacity of the suction nozzle is improved; meanwhile, the water film retained on the road surface is pushed forward by utilizing the reverse blowing airflow, so that the humidity of a road section operated by the suction nozzle is ensured to be low, and the advancing of vehicles and pedestrians is facilitated; on the other hand, in the back-blowing type washing and sweeping vehicle of the present invention, the dust-containing water vapor is discharged to the road surface at a low level through the dust discharge pipe 120 under the action of the suction fan and adheres to the road surface, thereby solving the problem of secondary environmental pollution caused by the high-level discharge of the dust-containing water vapor to the atmosphere.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of a blowback type scrubber truck according to a preferred embodiment of the present invention;
FIG. 2 is a schematic view of a high pressure water spray curtain formed by the high pressure water spray device of FIG. 1;
FIG. 3 is a schematic view of a reverse blowing air curtain formed by the injection of the reverse blowing device in FIG. 1;
FIG. 4 is a schematic diagram of prior art comb print elimination;
FIG. 5 is a schematic view of the elimination of comb print in the structure of the back-blowing type washing and sweeping vehicle of the present invention.
Description of the figures
10. A suction nozzle; 101. a suction cavity; 102. a mounting cavity; 20. a pavement; 30. a dustbin; 40. a suction fan; 50. a high pressure water spray device; 501. a high-pressure water spraying water curtain; 502. a water flow superposition area; 51. a high pressure water nozzle; 60. a back blowing device; 601. a back-blowing air curtain; 602. a gas flow high velocity zone; 603. a low airflow velocity zone; 61. an air flow nozzle; 62. a back-blowing fan; 70. a suction delivery conduit; 80. a dusty water vapor conduit; 110. sweeping the disc; 120. a dust exhaust pipeline.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the accompanying drawings, but the invention can be embodied in many different forms, which are defined and covered by the following description.
Referring to fig. 1, a preferred embodiment of the present invention provides a blowback type scrubber truck, including: the suction nozzle 10 is internally provided with a suction pickup cavity 101 and a mounting cavity 102 which are sequentially arranged from front to back along the running direction of a vehicle, the ground clearance at the communication part of the suction pickup cavity 101 and the mounting cavity 102 is less than 20mm, the suction pickup cavity 101 is also communicated with a dustbin 30, the dustbin 30 is communicated with a suction fan 40, the mounting cavity 102 is internally provided with a high-pressure water spray device 50 and a back blowing device 60, and the suction fan 40, the high-pressure water spray device 50 and the back blowing device 60 are respectively connected with a control device. The high-pressure water spraying device 50 is used for spraying high-pressure water to the road surface 20 close to the suction and pick-up cavity 101 to wash the road surface 20, and enabling the high-pressure water to carry dust into a covering area of the suction and pick-up cavity 101. The suction fan 40 is used for sucking garbage gathered in front of the suction nozzle 10 and water flow on the road surface 20 corresponding to the mounting cavity 102 into the suction pick-up cavity 101 to form garbage-containing airflow, and enabling the garbage-containing airflow to enter the garbage can 30 for settling and filtering, the air exhaust end of the suction fan 40 is connected with a dust exhaust pipeline 120, and the suction fan 40 is also used for enabling dust-containing water vapor in the garbage-containing airflow after settling and filtering through the garbage can 30 to be discharged onto the road surface 20 through the dust exhaust pipeline 120 at a low position. The reverse blowing device 60 is used for supplying reverse blowing airflow, reversely blowing the reverse blowing airflow to the road surface 20 close to the suction cavity 101, and further reversely blowing the sewage flowing from the suction cavity 101 to the mounting cavity 102 and the washing water of the high-pressure water spraying device 50 after washing the road surface 20 into the coverage area of the suction cavity 101.
When the back blowing type washing and sweeping vehicle works, the control device controls the action of the sweeping disc 110 on the washing and sweeping vehicle, and the sweeping disc 110 gathers the garbage in front of the suction nozzle 10; the control device respectively controls the suction fan 40, the high-pressure water spraying device 50 and the back blowing device 60 to act, the suction fan 40 enables the suction cavity 101 and the dustbin 30 to form a vacuum negative pressure environment, the high-pressure water spraying device 50 sprays high-pressure water to the road surface 20 to wash the road surface 20, and the back blowing device 60 enables back blowing airflow to blow back to the road surface 20 close to the suction cavity 101; under the action of negative pressure, the suction nozzle 10 sucks garbage gathered in front of the suction nozzle and water flow on a road surface corresponding to the mounting cavity 102 into the suction cavity 101 respectively to form garbage-containing air flow (mainly comprising blocks, coarse particles, cement-containing soil, dust-containing water vapor and the like); the garbage-containing airflow enters the garbage can 30 under the action of vacuum negative pressure, the garbage-containing airflow is settled and filtered by the garbage can 30, lumps, coarse particles, cement-containing soil and the like in the garbage-containing airflow are settled and filtered and then retained in the garbage can 30, and a small part of dust-containing water vapor which is not collected in the garbage can 30 enters the dust exhaust pipeline 120 from the air exhaust end of the suction fan 40 and then is discharged to the road surface 20 from the dust exhaust pipeline 120 at a low position and is adhered to the road surface 20; the sewage flowing from the suction cavity 101 to the installation cavity 102 and the washing water after the road surface 20 is washed by the high-pressure water spraying device 50 are reversely blown into the suction cavity 101 by the blowback air flow blown by the blowback device 60, and the blowback air flow is mixed with the lumps, the coarse particles, the cement-containing soil and the like in the suction cavity 101 to form a new garbage flow under the action of suction force, and the new garbage flow enters the garbage can 30 to act.
When current washing and sweeping vehicle operation, inhale and pick up the chamber and aspirate intracavity sewage, the installation cavity can be omitted because of inhaling to pick up inadequately to the fractional sewage, under the high pressure water spray effect of installation cavity, this sewage is mostly washed back again and is inhaled and pick up the chamber and carry out the secondary suction, and simultaneously, because of high pressure water spray water curtain both ends velocity of flow is low, so high pressure water spray water curtain overlap joint region that two adjacent nozzles formed, the washing water that the sewage and the nozzle that the place was left out in the place sprayed here can not impel forward, it forms a dirty hosepipe (comb seal) to detain on the road surface, seriously influence the washing and sweeping effect on road surface, as shown in figure 4. When the back blowing type washing and sweeping vehicle works, the missed sewage and the flushing water can be pushed forwards into the suction and pickup cavity 101 for secondary suction by using higher back blowing airflow, so that comb marks are eliminated, and the suction and pickup capacity of the suction nozzle is improved; meanwhile, the water film retained on the road surface is pushed forward by utilizing the reverse blowing airflow, so that the humidity of a road section operated by the suction nozzle is ensured to be low, and the advancing of vehicles and pedestrians is facilitated, as shown in fig. 5; on the other hand, in the back-blowing type washing and sweeping vehicle of the present invention, the dust-containing water vapor is discharged to the road surface 20 at a low level through the dust discharge pipe 120 under the action of the suction fan 40 and adheres to the road surface, thereby solving the problem of secondary environmental pollution caused by the high-level discharge of the dust-containing water vapor to the atmosphere.
Alternatively, as shown in figure 1, the suction pick-up chamber 101 communicates with the waste bin 30 via a suction delivery conduit 70 connected to the top thereof. The waste bin 30 communicates with the suction end of the suction fan 40 via a dirty water vapour line 80. The discharge end of the suction fan 40 communicates with the inlet end of the dust exhaust duct 120, and the outlet end of the dust exhaust duct 120 faces the floor 20 to ensure that the dust-laden water vapor discharged by the suction fan 40 reaches the floor 20. In the embodiment of this alternative, the inlet end of the dust exhaust pipe 120 is communicated with the exhaust end of the suction fan 40, the outlet end of the dust exhaust pipe 120 is located between the sweeping disc 110 and the suction nozzle and extends perpendicular to the road surface 20, and the height of the outlet end of the dust exhaust pipe 120 from the ground is 200mm to 500mm, so that the dust-laden water vapor can smoothly reach the road surface 20, and the dust pollution caused by the dust-laden water vapor floating in the air is reduced.
Preferably, as shown in fig. 1, the high-pressure water spraying devices 50 and the back blowing devices 60 are arranged in parallel at intervals along the vehicle running direction, and the back blowing devices 60 are located behind the high-pressure water spraying devices 50, so as to avoid interference between back blowing air flow blown by the back blowing devices 60 and high-pressure water sprayed by the high-pressure water spraying devices 50, and further avoid influencing the washing effect of the high-pressure water on the road surface and the back blowing effect of the back blowing air flow. The distance between the high-pressure water spray device 50 and the back blowing device 60 is 30 mm-60 mm. When the height of the air flow is less than 30mm, the impact force of the high-pressure water curtain can be weakened by part of the air flow rebounded after the air flow impacts the ground, so that the flushing effect is influenced; and when the diameter is larger than 60mm, the air flow is pushed along the road surface to consume a large amount, so that the air flow pushing effect is influenced. Or, the output direction of the reverse blowing device 60 is inclined towards the direction of the suction cavity 101, so that the reverse airflow output by the reverse blowing device 60 and the high-pressure water output by the high-pressure water spraying device 50 can cooperate, further, the sewage flowing from the suction cavity 101 to the installation cavity 102 and the flushing water after the high-pressure water spraying device 50 flushes the road surface 20 are reversely blown into the suction cavity 101, meanwhile, the high-pressure water output by the high-pressure water spraying device 50 can form a water curtain, the reverse airflow output by the reverse blowing device 60 can form an air curtain, further, a multi-stage barrier is formed, the water vapor carrying raised dust is prevented from leaking backwards, and further, the road surface cleaning effect is ensured.
Alternatively, as shown in fig. 1, the high pressure water spray device 50 includes a plurality of high pressure water nozzles 51, and a washing water supply tank (not shown) for supplying washing water. The plurality of high-pressure water nozzles 51 are arranged at intervals in the vehicle width direction, and the plurality of high-pressure water nozzles 51 are connected to the washing water supply tank and the control device, respectively, so as to spray high-pressure water toward the road surface under the action of the control device. In this alternative, a plurality of high pressure water spray nozzles 51 are evenly arranged at intervals along the width direction of the vehicle to evenly wash the road surface, and a single high pressure water spray nozzle 51 is obliquely sprayed to the road surface along the direction forming an included angle with the road surface, so that the washing effect on the road surface is improved.
In this alternative, as shown in fig. 2, the high-pressure water spray nozzle 51 sprays a high-pressure water spray curtain 501 having a fan shape in the vehicle width direction. The single high-pressure water spray curtain 501 has a road surface coverage width L in the vehicle width direction. Two adjacent high-pressure water spray water curtains 501 have a water flow overlapping area 502 having a width B in the vehicle width direction.
Alternatively, as shown in fig. 1, the blowback device 60 includes a blowback fan 62 for supplying blowback air, and a plurality of air flow nozzles 61 respectively communicating with the blowback fan 62, the branch blower 62 and the air flow nozzles 61 are respectively connected to the control device, and the plurality of air flow nozzles 61 are sequentially arranged at intervals in the vehicle width direction. In the alternative, a plurality of air flow nozzles 61 are uniformly arranged at intervals along the width direction of the vehicle to uniformly blow back the road surface, and a single air flow nozzle 61 is obliquely sprayed to the road surface along the direction forming an included angle with the road surface to reversely blow the sewage flowing from the suction cavity 101 to the mounting cavity 102 and the flushing water generated after the high-pressure water spraying device 50 flushes the road surface 20 into the suction cavity 101, and meanwhile, the water film remained on the road surface is pushed forward by utilizing the blowback air flow, so that the humidity of the road section where the suction nozzle operates is ensured to be small, and the blowback effect on the road surface is improved. Or, the back-blowing device 60 includes a back-blowing fan 62 for supplying back-blowing airflow and an airflow nozzle communicated with the back-blowing fan 62, the back-blowing fan 62 and the airflow nozzle are respectively connected with the control device, and the airflow nozzle is provided with a plurality of airflow nozzles sequentially arranged at intervals along the width direction of the vehicle. In the alternative, a plurality of airflow nozzles are uniformly distributed at intervals along the width direction of the vehicle so as to uniformly blow back the road surface, and a single airflow nozzle is obliquely sprayed to the road surface along the direction forming an included angle with the road surface.
In this alternative, as shown in fig. 3, the reverse blowing device 60 forms a reverse blowing air curtain 601 by the air jet nozzle 61 or the air jet nozzle jet, and the reverse blowing air curtain is fan-shaped in the width direction of the vehicle. Two adjacent blowback air curtains 601 have an air flow overlapping area with a width D in the vehicle width direction, and the air flow overlapping area is an air flow high speed area 602 with a high air flow speed (an air flow speed greater than 100m/s), and an area between two adjacent air flow overlapping areas is an air flow low speed area 603 with a low air flow speed (an air flow speed greater than 75 m/s). The airflow high-speed areas 602 and the water flow superposition areas 502 are arranged in a one-to-one correspondence manner, and the sewage belt of the correspondingly arranged water flow superposition areas 502 is pushed forwards into the suction cavity 101 for secondary suction by the high-speed airflow of the airflow high-speed areas 602, so that comb marks are eliminated. Further, the airflow low-speed area 603 and the water flow non-overlapping area between the two water flow overlapping areas 502 are arranged in a one-to-one correspondence manner, and the water films of the correspondingly arranged water flow non-overlapping areas are pushed forward by the low-speed airflow of the airflow low-speed area 603, so that the humidity of a road section operated by the suction nozzle is ensured to be low, and convenience is brought to the advancing of vehicles and pedestrians.
Preferably, the width B of the water flow overlap region 502<Width D of the superimposed air flow zone<1/3 high-pressure water spray curtain 501 has a road surface covering width L. Since the airflow high-speed area 602 is arranged corresponding to the water flow superposition area 502, the flow velocity is B<And D, namely when the width of the airflow high-speed area 602 is greater than that of the correspondingly arranged water flow superposition area 502, the corresponding sewage belt can be pushed forwards into the suction pick-up cavity 101 by the high-speed airflow, so that the elimination effect and quality of the comb print are improved. When in use
When the width of the airflow high-speed region 602 is smaller than 1/3 of the width L of the single high-pressure water spray curtain 501, the total amount of the blowback airflow is stable and generally not large, and when D is larger, the smaller the speed of the high-speed airflow of the airflow high-speed region 602 is, the smaller the speed of the high-speed airflow is, and there may be a situation that the sewage belt cannot be pushed forward, so D cannot be too large, and is preferably 1/3 smaller than the width L of the single high-pressure water spray curtain 501.
Preferably, in the embodiment of the present invention, VVehicle height<VWater is not low<VWater level is high<VQi is not low<VHigh degree of qiWherein:
Vvehicle height-maximum travel speed of the vehicle during operation;
Vwater is not low-the minimum water velocity of the non-overlapping zones of water flow (low velocity zones);
Vwater level is high-the maximum water flow velocity in the non-overlapping regions of water flow (low velocity regions);
Vqi is not low-the lowest gas flow velocity of the non-overlapping zones of gas flow (low velocity zones);
Vhigh degree of qi-the highest gas flow velocity of the non-overlapping zones of the gas flow (low velocity zones).
VVehicle height<VWater is not lowAt this time, it is ensured that the high-pressure water jetted from the high-pressure water jet nozzle 51 can be pushed forward against the traveling speed of the vehicle and wash the road surface.
VWater is not low<VWater level is high<VQi is not low<VHigh degree of qiIn the process, the speed of the back-blowing airflow of the airflow non-overlapping area 603 can overcome the speed of high-pressure water spraying flow, so that the water film remained in the flow non-overlapping area is pushed forward, and the humidity of a road section operated by the suction nozzle is ensured to be low.
Further, in the present embodiment, VHigh degree of qi<VThe water stack is low<VHeight of water stack<VAir stack is low<V gasStack heightWherein:
Vthe water stack is low-minimum water velocity of the water flow superposition zone (high velocity zone);
Vheight of water stack-the maximum water velocity of the water flow superposition zone (high velocity zone);
Vair stack is low-lowest gas flow velocity in the gas flow overlap zone (high velocity zone);
Vgas stack height-the highest gas flow velocity in the gas flow overlap zone (high velocity zone).
VThe water stack is low<VHeight of water stack<VAir stack is low<VGas stack heightDuring operation, the speed of the back-blowing airflow of the airflow superposition area 602 is ensured to overcome the high-pressure water-spraying flow speed, so that the water belt retained in the airflow superposition area is pushed forward, and the condition that no digital mark is printed during operation of the suction nozzle is ensured.
Since the impact of the air flow and the water flow is proportional to the speed thereof, and the total amount of the air flow discharged from the discharge end of the suction fan 40 is stable, the larger the speed, the more the amount of air flow passing through per unit time, and when V is setQi is not low<VHigh degree of qi<VThe water stack is low<VHeight of water stackDuring the time, can carry out effective, rational distribution to the tolerance, and then guarantee the effect of the air current in air current high speed district 602 and the effect of air current in air current low speed district 603, the air current utilization ratio is higher, more reasonable.
In another alternative of the present invention, the back-blowing device 60 includes a back-blowing fan 62 for supplying back-blowing airflow, and an airflow nozzle communicated with the back-blowing fan 62, the back-blowing fan 62 and the airflow nozzle are respectively connected with the control device, and the airflow nozzle is provided with blowing slits arranged along the width direction of the vehicle. When the alternative works, the high-speed airflow blown out through the blowing gap synchronously pushes the sewage belt in the water flow overlapping area 502 and the flushing water in the water flow non-overlapping area forwards into the suction cavity 101 for secondary suction, so that comb marks are eliminated, and meanwhile, the water film on the road surface is pushed forwards, so that the humidity of the road section operated by the suction nozzle is ensured to be low, and the convenience is brought to the advancing of vehicles and pedestrians. Compare in adopting air jet nozzle 61 or air current spout to spray the blowback air current, when blowback fan 62 supplies with the blowback air current ability enough, when adopting the seam of blowing to spray the blowback air current, road surface comb seal eliminating effect is better, and the highway section humidity that the suction nozzle operation was crossed is littleer, more is favorable to advancing of vehicle and pedestrian, and the washing and sweeping effect of washing and sweeping vehicle is better.
In the alternative, the length of the back-blowing air curtain 601 blown out from the blowing gap along the width direction of the vehicle is greater than the sum of the road surface covering widths of all the high-pressure water spray curtains 501 in the width direction of the vehicle, so that the back-blowing air curtain 601 blown out from the blowing gap can synchronously push a sewage belt and washing water on the road surface forwards together, further comb marks are eliminated, and the humidity of a road section operated by a suction nozzle is low. The width of the blowing seam is 0.05 mm-6 mm, on one hand, the energy of the back-blowing airflow air curtain 601 blown out by the blowing seam is enough to push the sewage belt and the flushing water forward, and meanwhile, the energy is saved, and the working efficiency and the effect of the back-blowing fan 62 are improved. Average airflow velocity V of reverse blowing airflow curtain 601Mean qi>1.2 times the average water velocity V of the middle region of the single high pressure water spray curtain 501Average of waterTo ensure the speed of the back-blowing air flow to overcome the middle of the high-pressure water-spraying water curtain 501
The average water flow speed of the area further pushes the sewage belt and the washing water on the road surface forward, and the elimination of the comb print and the low humidity of the road section operated by the suction nozzle are ensured.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. A blowback type washing and sweeping vehicle comprising: the suction nozzle (10), a suction pickup cavity (101) and a mounting cavity (102) which are sequentially arranged from front to back along the running direction of a vehicle are arranged in the suction nozzle (10), the suction pickup cavity (101) is also communicated with a garbage can (30), the garbage can (30) is communicated with a suction fan (40), the suction nozzle is characterized in that,
a high-pressure water spraying device (50) and a back blowing device (60) are arranged in the mounting cavity (102), and the suction fan (40), the high-pressure water spraying device (50) and the back blowing device (60) are respectively connected with a control device;
the high-pressure water spraying device (50) is used for spraying high-pressure water to the road surface (20) close to the suction and pickup cavity (101) to wash the road surface (20) and enabling the high-pressure water to carry flying dust into a covering area of the suction and pickup cavity (101);
the suction fan (40) is used for sucking garbage gathered in front of the suction nozzle (10) and water flow on a road surface (20) corresponding to the installation cavity (102) into the suction pick-up cavity (101) to form garbage-containing airflow, enabling the garbage-containing airflow to enter the garbage can (30) again for sedimentation and filtration, the air exhaust end of the suction fan (40) is connected with a dust exhaust pipeline (120), and the suction fan (40) is also used for enabling dust-containing water vapor in the garbage-containing airflow subjected to sedimentation and filtration by the garbage can (30) to be discharged to the road surface (20) at a low position through the dust exhaust pipeline (120);
the back blowing device (60) is used for supplying back blowing airflow and enabling the back blowing airflow to back blow to the road surface (20) close to the suction and pickup cavity (101), and further enabling sewage flowing from the suction and pickup cavity (101) to the installation cavity (102) and flushing water generated after the high-pressure water spraying device (50) flushes the road surface (20) to be reversely blown into a covering area of the suction and pickup cavity (101).
2. The blowback-type washing and sweeping vehicle of claim 1,
the suction pick-up cavity (101) is communicated with the dustbin (30) through a suction conveying pipeline (70) connected to the top of the suction pick-up cavity;
the dustbin (30) is communicated with the suction end of the suction fan (40) through a dust-containing water vapor pipeline (80);
the air exhaust end of the suction fan (40) is communicated with the inlet end of the dust exhaust pipeline (120), and the outlet end of the dust exhaust pipeline (120) faces the ground (20) so as to ensure that the dust-containing water vapor exhausted by the suction fan (40) reaches the ground (20).
3. The blowback-type washing and sweeping vehicle of claim 2,
the high-pressure water spray device (50) and the back blowing device (60) are arranged in parallel at intervals along the running direction of the vehicle, the back blowing device (60) is positioned behind the high-pressure water spray device (50), and the distance between the high-pressure water spray device (50) and the back blowing device (60) is 30-60 mm; or
The output direction of the back blowing device (60) is inclined towards the suction cavity (101), so that the back blowing air flow output by the back blowing device (60) and the high-pressure water output by the high-pressure water spraying device (50) are in synergistic action, and further the sewage flowing from the suction cavity (101) to the installation cavity (102) and the washing water after the high-pressure water spraying device (50) washes the road surface (20) are reversely blown into the suction cavity (101).
4. The blowback-type washing and sweeping vehicle of claim 3,
the high-pressure water spray device (50) comprises a plurality of high-pressure water nozzles (51) and a washing water supply tank for supplying washing water;
the plurality of high-pressure water nozzles (51) are arranged at intervals in the vehicle width direction, and the plurality of high-pressure water nozzles (51) are connected to the flush water supply tank and the control device, respectively.
5. The blowback-type washing and sweeping vehicle of claim 4,
the high-pressure water spray curtain (501) formed by spraying of the high-pressure water nozzles (51) is fan-shaped along the width direction of the vehicle;
the road surface coverage width of the single high-pressure water spray curtain (501) in the width direction of the vehicle is L;
two adjacent high-pressure water spray water curtains (501) are provided with a water flow overlapping area (502) with the width B in the width direction of the vehicle.
6. The blowback-type washing and sweeping vehicle of claim 5,
the back blowing device (60) comprises a back blowing fan (62) used for supplying back blowing airflow and a plurality of airflow nozzles (61) respectively communicated with the back blowing fan (62), the back blowing fan (62) and the airflow nozzles (61) are respectively connected with the control device, and the airflow nozzles (61) are sequentially arranged at intervals along the width direction of the vehicle; or
The back blowing device (60) comprises a back blowing fan (62) used for supplying back blowing airflow and an airflow nozzle communicated with the back blowing fan (62), the back blowing fan (62) and the airflow nozzle are respectively connected with the control device, and the airflow nozzle is provided with a plurality of airflow nozzles which are sequentially arranged at intervals along the width direction of the vehicle.
7. The blowback-type washing and sweeping vehicle of claim 6,
the reverse blowing device (60) forms a reverse blowing air curtain (601) which is formed by jetting through the air flow nozzle (61) or the air flow nozzle and is fan-shaped along the width direction of the vehicle;
two adjacent blowback air curtain air curtains (601) are provided with an air flow overlapping area with the width D in the width direction of the vehicle, the air flow overlapping area is an air flow high-speed area (602) with high air flow speed, and an area between two adjacent air flow overlapping areas is an air flow low-speed area (603) with low air flow speed;
the airflow high-speed areas (602) and the water flow superposition area (502) are arranged in a one-to-one correspondence mode.
8. The blowback-type washing and sweeping vehicle of claim 7,
the width B of the water flow superposition area (502) is less than the width D of the air flow superposition area is less than the road surface coverage width L of the high-pressure water spray water curtain (501) of 1/3.
9. The blowback type internal circulation wash-and-sweep vehicle of claim 7,
Vvehicle height<VWater is not low<VWater level is high<VQi is not low<VHigh degree of qiWherein:
Vvehicle height-maximum travel speed of the vehicle during operation;
Vwater is not low-the minimum water velocity of the non-overlapping zones of water flow (low velocity zones);
Vwater level is high-the maximum water flow velocity in the non-overlapping regions of water flow (low velocity regions);
Vqi is not low-the lowest gas flow velocity of the non-overlapping zones of gas flow (low velocity zones);
Vhigh degree of qi-the highest gas flow velocity of the non-overlapping zones of the gas flow (low velocity zones).
10. The blowback type internal circulation wash-and-sweep vehicle of claim 9,
Vhigh degree of qi<VThe water stack is low<VHeight of water stack<VAir stack is low<V gas stack heightWherein:
Vthe water stack is low-minimum water velocity of the water flow superposition zone (high velocity zone);
Vheight of water stack-the maximum water velocity of the water flow superposition zone (high velocity zone);
Vair stack is low-lowest gas flow velocity in the gas flow overlap zone (high velocity zone);
Vgas stack height-the highest gas flow velocity in the gas flow overlap zone (high velocity zone).
11. The blowback-type washing and sweeping vehicle of claim 5,
the back blowing device (60) comprises a back blowing fan (62) used for supplying back blowing airflow and an airflow nozzle communicated with the back blowing fan (62), the back blowing fan (62) and the airflow nozzle are respectively connected with the control device, and the airflow nozzle is provided with blowing seams distributed along the width direction of the vehicle.
12. The blowback-type washing and sweeping vehicle of claim 11,
the length of a back-blowing airflow air curtain (601) blown out by the blowing seam along the width direction of the vehicle is larger than the sum of the road surface coverage widths of all the high-pressure water spray water curtains (501) in the width direction of the vehicle;
the width of the blowing seam is 0.05 mm-6 mm;
the average air flow speed V of the back-blowing air curtain (601)Mean qi>1.2 times of the middle of a single high-pressure water spraying water curtain (501)
Average water velocity V of a regionAverage of water。
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| CN202010495439.1A CN111705730B (en) | 2020-06-03 | 2020-06-03 | Back-blowing type washing and sweeping vehicle |
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| CN202010495439.1A CN111705730B (en) | 2020-06-03 | 2020-06-03 | Back-blowing type washing and sweeping vehicle |
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| CN111705730A true CN111705730A (en) | 2020-09-25 |
| CN111705730B CN111705730B (en) | 2022-04-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115026086A (en) * | 2022-05-05 | 2022-09-09 | 中国水利水电第三工程局有限公司 | Concrete warehouse surface cleaning method |
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| CN111705730B (en) | 2022-04-05 |
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