Airflow circulation type suction sweeping device for high-speed suction sweeping vehicle

Abstract

The airflow circulation type suction sweeping device comprises an airflow circulation box and a sweeping suction cup assembly, a positive pressure airflow channel and a negative pressure airflow channel are formed in the airflow circulation box, the sweeping suction cup assembly comprises a suction cup shell, and a positive pressure reverse blowing cavity and a negative pressure dust suction cavity are formed in the suction cup shell; the positive pressure airflow channel is communicated with the positive pressure reverse blowing cavity; and the negative pressure airflow channel is communicated with the negative pressure dust collection cavity. Positive-pressure airflow and negative-pressure airflow are output through the airflow circulating box, and a positive-pressure airflow and negative-pressure airflow parallel operation mode is integrated on the sweeping suction cup assembly, so that the positive-pressure airflow is blown to road surface garbage, the road surface garbage is rapidly started and sucked under the action of the negative-pressure airflow, and the sweeping efficiency is improved. Rapid suction and reliable suction of road surface garbage particles are achieved, the rapid suction capacity of the suction cup is improved, and then the sweeping rate of the high-speed suction sweeper is improved.

Description

Technical Field

[0001] The invention relates to the technical field of high-speed suction sweeper vehicles, and in particular to an airflow circulation type suction sweeper device for a high-speed suction sweeper vehicle. Background Art

[0002] Expressways and trunk roads have become the main form of human transportation and material transportation. Various household garbage generated during human transportation will be thrown on the road, and material transportation vehicles will inevitably spill the transported materials on the road during transportation. In addition, transportation vehicles may also have traffic accidents and mechanical failures, resulting in damaged parts scattered on the road.

[0003] These household garbage, transported materials and damaged vehicle parts scattered on the road will not only affect the smoothness of traffic, but also cause unnecessary damage to the road surface, especially have a huge impact on driving safety, and seriously threaten the personal safety, material safety and vehicle safety of operating vehicles. Therefore, timely cleaning of these road garbage is an important measure to ensure the operational efficiency and operational safety of highways and trunk roads and reduce casualties. However, due to the high speed of vehicles on highways and trunk roads, manual cleaning is no longer in line with the development level of modern productivity. First, manual cleaning and maintenance operations on highways and trunk roads where vehicles are traveling at high speeds are very likely to cause personal injury accidents. Second, the efficiency of manual cleaning and maintenance operations is too low, which affects the operational efficiency of highways and trunk roads. Third, the relevant management departments are facing the dual pressure of the increasing shortage of human labor resources and the continuous increase in human labor costs. Therefore, high-speed or fast suction sweepers that can meet the daily cleaning and maintenance operations of highways and trunk roads have become an urgent need.

[0004] In recent years, a number of high-speed vacuum sweepers have emerged, all claiming to have an operating speed of up to 60km / h or even higher to meet user needs. However, the actual effective operating speed of these high-speed vacuum sweepers is far less than 60km / h (the actual cleaning efficiency at this time is only about 50%, and the relevant standards require that it should not be less than 90%).

[0005] The above-mentioned high-speed suction sweeper has two main operating modes. The first is the mechanical pure sweeping mode, that is, the rear of this high-speed sweeper is equipped with a rotating roller brush in contact with the road surface, and a scraper conveyor belt is installed in front of the rotating roller brush to receive the garbage ejected by the roller brush and send it into the garbage bin in front of the scraper conveyor belt. Its structure and working principle determine that this sweeper can only pick up scattered granular garbage, and its ability to pick up fine dust is very poor. The second is the negative pressure suction sweeping mode, that is, this high-speed sweeper is equipped with a centrifugal fan and a garbage bin, and a suction cup buckled on the road surface. The suction cup is connected to the garbage bin through a flexible hose to form a closed channel. When the fan rotates, a negative pressure airflow can be generated in the suction cup, and the garbage under the suction cup is sucked into the negative pressure airflow channel. After entering the garbage bin, the garbage particles settle in the garbage bin by their own gravity, thereby completing the process of cleaning the road garbage. This type of high-speed sweeper has a very powerful fan, and usually uses an upper-mounted auxiliary engine to drive the fan and other operating devices, that is, a dual-engine power system. The use of a dual-engine power system will inevitably result in excessive power configuration of the entire vehicle, high fuel consumption, high noise, and high cost of use.

[0006] In summary, the high-speed vacuum sweepers based on the existing technology all have the problem of substandard cleaning rates. The fundamental reason is that the suction and picking effect during high-speed operation is not ideal. The deeper reason is that the negative pressure airflow acts on the road garbage for too short a time, which is not enough to drive the garbage off the road surface. Summary of the invention

[0007] In view of the above problems in the prior art, the present invention provides an airflow circulation type suction and sweeping device for a high-speed suction and sweeping vehicle, which solves the problem that the cleaning rate of the prior high-speed suction and sweeping vehicle does not meet the standard.

[0008] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0009] Provided is an airflow circulation type suction and sweeping device for a high-speed suction and sweeping vehicle, which comprises an airflow circulation box and a cleaning suction cup assembly, wherein a positive-pressure airflow channel and a negative-pressure airflow channel are provided in the airflow circulation box, and the cleaning suction cup assembly comprises a suction cup shell, wherein a positive-pressure back-blowing chamber and a negative-pressure dust suction chamber are provided in the suction cup shell, wherein the positive-pressure airflow channel is connected to the positive-pressure back-blowing chamber; and the negative-pressure airflow channel is connected to the negative-pressure dust suction chamber.

[0010] The present invention outputs positive-pressure airflow and negative-pressure airflow through an airflow circulation box, and integrates the positive-pressure airflow and negative-pressure airflow parallel operation modes on the cleaning suction cup assembly, so that the positive-pressure airflow blows toward the road garbage, so that the road garbage is quickly started and is sucked under the action of the negative-pressure airflow, thereby achieving rapid and reliable suction of road garbage particles, improving the rapid suction capability of the suction cup, and further improving the cleaning rate of the high-speed suction sweeper.

[0011] Furthermore, a first partition is provided inside the air circulation box, and the first partition is used to divide the inside of the air circulation box into a fan compartment for placing a fan, and a garbage compartment forming a negative pressure air flow channel inside;

[0012] The negative pressure air flow outlet of the garbage compartment is connected with the air inlet of the fan; a vertical dust suction pipe is arranged inside the garbage compartment, and the bottom of the vertical dust suction pipe is connected with the negative pressure dust suction chamber.

[0013] Furthermore, a second baffle is provided on the upper part of the air circulation box, and a positive pressure air flow channel is formed between the second baffle and the top plate of the air circulation box; the positive pressure air flow inlet of the positive pressure air flow channel is connected to the air outlet of the fan;

[0014] Positive pressure air flow vertical pipes are opened on both sides of the rear end of the garbage bin, one end of the positive pressure air flow vertical pipe is connected to the positive pressure air flow channel, and the other end of the positive pressure air flow vertical pipe passes through the bottom plate of the garbage bin and is connected to the positive pressure backblowing chamber.

[0015] Furthermore, a diverter plate is provided on the lower surface of the second partition plate located directly above the vertical dust suction pipe, and a baffle plate is provided between the vertical dust suction pipe and the negative pressure air flow outlet.

[0016] Furthermore, a through groove is provided in the middle of the upper surface of the suction cup shell, and a middle partition is provided in the through groove through two sealing plates, and the middle partition divides the interior of the suction cup shell into a positive pressure back-blowing chamber and a negative pressure dust suction chamber;

[0017] The positive-pressure back-blowing chamber is connected to the positive-pressure airflow channel through the positive-pressure airflow connecting pipe; the negative-pressure dust suction chamber is connected to the negative-pressure airflow channel through the negative-pressure airflow connecting pipe.

[0018] Furthermore, a blowing guide plate is arranged on the rear wall plate of the suction cup housing through a rotating shaft; an adjusting nut seat is arranged on the outer wall of the blowing guide plate, and a fixing nut seat is arranged on the front wall plate of the suction cup housing, and the fixing nut seat and the adjusting nut seat are connected by a swing adjusting screw;

[0019] Furthermore, the front wall plate of the suction cup shell is provided with a suction cup windshield curtain through a core shaft, and the suction cup windshield curtain includes a plurality of windshield sub-curtains with the top sleeved on the core shaft, and the windshield sub-curtains include a first sub-curtain and a second sub-curtain, and the first sub-curtain and the second sub-curtain are relatively staggered.

[0020] In this scheme, when there is no large-sized garbage entering in front of the wind shield curtain, the adjacent wind shield curtains overlap each other and droop naturally to form a normal opening, allowing normal air volume to enter. When large-sized garbage enters in front of the wind shield curtain, the garbage particles push the corresponding limited number of wind shield curtains to swing backward, and the local opening from the ground increases, allowing garbage to enter. After the garbage particles enter the suction cup, the wind shield curtain swings downward under the action of its own gravity, restores the overlapping state, restores the normal opening, and restores the normal air volume to enter.

[0021] The invention discloses an airflow circulation type suction and sweeping device for a high-speed suction and sweeping vehicle, which has the following beneficial effects:

[0022] 1. The airflow circulation box of the present invention outputs positive pressure airflow and negative pressure airflow through the fan, and integrates the positive pressure airflow and negative pressure airflow parallel operation mode on the cleaning suction cup assembly, so that the positive pressure airflow blows to the road garbage, so that the road garbage is quickly started and sucked under the action of the negative pressure airflow, thereby realizing the rapid and reliable suction of road garbage particles, improving the rapid suction ability of the suction cup, and then improving the cleaning rate of the high-speed suction sweeper.

[0023] 2. The flexible, large-opening, limited-range windshield curtain configured with the air circulation suction cup of the present invention not only allows large-particle garbage to enter the suction cup smoothly, but also can restore the normal opening of the windshield curtain in time to ensure normal air intake, thereby ensuring normal and strong suction and picking effect. It is an ideal structure for high-speed vacuum sweepers to deal with non-continuous large-particle garbage. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The present invention is a schematic structural diagram of an airflow circulation type suction and sweeping device for a high-speed suction and sweeping vehicle.

[0025] Figure 2 It is a structural schematic diagram of the airflow circulation box of the present invention.

[0026] Figure 3 It is a schematic diagram of the cross-sectional structure of the airflow circulation box of the present invention.

[0027] Figure 4 It is a schematic diagram of the cross-sectional structure of the airflow circulation box of the present invention at another angle.

[0028] Figure 5 It is a schematic structural diagram of the cleaning suction cup assembly of the present invention.

[0029] Figure 6 It is a schematic diagram of the internal structure of the cleaning suction cup assembly of the present invention.

[0030] Figure 7 It is a bottom view structural schematic diagram of the cleaning suction cup assembly of the present invention.

[0031] Figure 8 It is a schematic structural diagram of the suction cup windshield curtain of the present invention.

[0032] Among them, 1, air circulation box; 101, first partition; 102, fan compartment; 103, garbage compartment; 104, negative pressure air outlet; 105, vertical dust suction pipe; 106, second partition; 107, positive pressure air inlet; 108, positive pressure air vertical pipe; 109, splitter plate; 110, baffle;

[0033] 2. Cleaning suction cup assembly; 201. Suction cup shell; 202. Positive pressure back-blowing chamber; 203. Negative pressure dust suction chamber; 204. Through slot; 205. Sealing plate; 206. Middle partition plate; 207. Positive pressure airflow connecting pipe; 208. Negative pressure airflow connecting pipe; 209. Blowing guide plate; 210. Adjusting nut seat; 211. Fixed nut seat; 212. Swinging adjusting screw; 213. Suction cup wind shield curtain; 214. Wind shield sub-curtain; 215. First sub-curtain; 216. Second sub-curtain; 3. Fan. DETAILED DESCRIPTION

[0034] The specific embodiments of the present invention are described to facilitate those skilled in the art to understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0035] Example 1

[0036] This embodiment provides an airflow circulation type suction and sweeping device for a high-speed suction and sweeping vehicle, the purpose of which is to solve the problem that the cleaning rate of the existing high-speed suction and sweeping vehicle does not meet the standard. Figure 1-Figure 4 , the specific structure of this embodiment will be described in detail below.

[0037] An airflow circulation type suction and sweeping device for a high-speed suction and sweeping vehicle comprises an airflow circulation box 1 and a cleaning suction cup assembly 2.

[0038] Among them, a positive-pressure airflow channel and a negative-pressure airflow channel are opened in the airflow circulation box 1, and the cleaning suction cup assembly 2 includes a suction cup shell 201, and a positive-pressure back-blowing chamber 202 and a negative-pressure dust suction chamber 203 are opened in the suction cup shell 201; the positive-pressure airflow channel is connected to the positive-pressure back-blowing chamber 202; the negative-pressure airflow channel is connected to the negative-pressure dust suction chamber 203.

[0039] In this embodiment, the airflow circulation box 1 is installed on the chassis frame of the high-speed vacuum sweeper, and the cleaning suction cup assembly 2 is installed at the rear of the chassis frame of the high-speed vacuum sweeper. A positive-pressure airflow channel and a negative-pressure airflow channel are formed in the airflow circulation box 1, and both the positive-pressure airflow and the negative-pressure airflow are guided to the cleaning suction cup assembly 2. The positive-pressure airflow and the negative-pressure airflow parallel operation mode are integrated on the cleaning suction cup assembly 2, so that the positive-pressure airflow is blown to the road garbage, so that the road garbage is quickly started and sucked under the action of the negative-pressure airflow, so as to realize the rapid and reliable suction of road garbage particles, improve the rapid suction ability of the suction cup, and then improve the cleaning rate of the high-speed vacuum sweeper.

[0040] Specifically, a first partition 101 is provided inside the airflow circulation box 1, and the first partition 101 is used to partition the interior of the airflow circulation box 1 into a fan compartment 102 for placing the fan 3, and a garbage compartment 103 with a negative pressure airflow channel formed inside; the negative pressure airflow outlet 104 of the garbage compartment 103 is connected to the air inlet of the fan 3; a vertical dust suction pipe 105 is provided inside the garbage compartment 103, and the bottom of the vertical dust suction pipe 105 is connected to the negative pressure dust suction chamber 203.

[0041] In this embodiment, the airflow circulation box 1 is partitioned into a fan compartment 102 and a garbage compartment 103 by a first partition plate 101 inside the airflow circulation box 1 , and the fan compartment 102 is used to place the fan 3 .

[0042] The garbage bin 103 can be used as a negative pressure airflow channel. The negative pressure airflow outlet 104 of the garbage bin 103 is opened above the fan compartment 102 so as to be connected with the air inlet of the fan 3, so that the garbage bin 103 generates a negative pressure airflow. At the same time, a vertical dust suction pipe 105 is arranged inside the garbage bin 103. The negative pressure environment in the garbage bin 103 is transferred to the cleaning suction cup assembly 2 through the vertical dust suction pipe 105 to absorb the road garbage, thereby sucking the road garbage into the garbage bin 103.

[0043] Optionally, the bottom of the garbage bin 103 may be inclined. The inclined bottom of the garbage bin 103 makes it easy to pile the garbage sucked into the garbage bin 103 at the rear outlet of the garbage bin 103 for subsequent cleaning. At the same time, the inclined bottom of the garbage bin 103 may form a recycling space below the garbage bin 103, for example, filling it with clean water to form a subsidiary water tank, thereby increasing the overall clean water load capacity.

[0044] Specifically, a second partition plate 106 is provided on the upper part of the air circulation box 1, and a positive pressure air flow channel is formed between the second partition plate 106 and the top plate of the air circulation box 1; the positive pressure air flow inlet 107 of the positive pressure air flow channel is connected to the air outlet of the fan 3;

[0045] Positive pressure air flow risers 108 are provided on both sides of the rear end of the garbage compartment 103 , one end of the positive pressure air flow riser 108 is connected to the positive pressure air flow channel, and the other end of the positive pressure air flow riser 108 passes through the bottom plate of the garbage compartment 103 and is connected to the positive pressure back-blowing chamber 202 .

[0046] In this embodiment, a second partition 106 is provided above the air circulation box 1, and a positive pressure airflow channel is formed between the second partition 106 and the top plate of the air circulation box 1 to receive the positive pressure airflow blown out by the fan 3. The positive pressure airflow inlet 107 of the positive pressure airflow channel is opened above the fan compartment 102 so as to be connected with the air outlet of the fan 3, so that a positive pressure airflow is formed in the positive pressure airflow channel. At the same time, positive pressure airflow risers 108 are opened on both sides of the rear end of the garbage compartment 103. The positive pressure airflow risers 108 transfer the positive pressure airflow in the positive pressure airflow channel to the cleaning suction cup assembly 2 to back-blow the road garbage, so that the road garbage is lifted under the back-blow of the positive pressure airflow, and starts quickly, and forms a directional reflection to help the reliable suction and pickup of road garbage particles.

[0047] Specifically, a diverter plate 109 is provided on the lower surface of the second partition plate 106 located directly above the vertical dust suction pipe 15 , and a baffle 110 is provided between the vertical dust suction pipe 105 and the negative pressure air flow outlet 104 .

[0048] In this embodiment, a diverter plate 109 is provided on the lower surface of the second partition plate 106 . The cross section of the diverter plate 109 is triangular, so as to divert the garbage sucked up from the vertical vacuum tube 105 and prevent the garbage sucked up from the vertical vacuum tube 105 from directly hitting the second partition plate 106 .

[0049] A baffle 110 is provided between the vertical dust suction pipe 105 and the negative pressure air flow outlet 104 , and the baffle 110 prevents garbage from rushing toward the negative pressure air flow outlet 104 to block the negative pressure air flow outlet 104 .

[0050] Optionally, a filter screen is provided at the negative pressure air flow outlet 104 , and the filter screen can prevent garbage from flowing toward the fan 3 and damaging the fan 3 .

[0051] Example 2

[0052] Based on Example 1, this embodiment provides a further solution of a cleaning suction cup assembly 2 of an air circulation type suction and sweeping device for a high-speed suction and sweeping vehicle, the purpose of which is to solve the problem that the cleaning rate of the existing high-speed suction and sweeping vehicle does not meet the standard, refer to Figure 5-Figure 8 , the specific structure of this embodiment will be described in detail below.

[0053] The cleaning suction cup assembly 2 includes a suction cup shell 201 .

[0054] A through groove 204 is provided in the middle of the upper surface of the suction cup housing 201, and a middle partition plate 206 is provided in the through groove 204 through two sealing plates 205. The middle partition plate 206 divides the interior of the suction cup housing 201 into a positive pressure back-blowing chamber 202 and a negative pressure dust suction chamber 203;

[0055] The positive-pressure back-blowing chamber 202 is connected to the positive-pressure airflow channel via the positive-pressure airflow connecting pipe 207 ; the negative-pressure dust suction chamber 203 is connected to the negative-pressure airflow channel via the negative-pressure airflow connecting pipe 208 .

[0056] In this embodiment, the bottom of the suction cup shell 201 is designed to be open, and a through groove 204 is opened on the upper surface. Inclined flanges are provided on both sides of the inner side of the through groove 204, and a sealing plate 205 is installed on the flange by bolts. The sealing plate 205 is made of flexible material, so that a closed gap is formed by the two sealing plates 205 to clamp and fix the middle partition 206, and the flexible sealing plate 205 can allow the middle partition 206 to swing at a certain angle and slide up and down, thereby providing the necessary degree of freedom for the adjustment of the middle partition 206.

[0057] The middle partition 206 is an arc-shaped plate or a flat plate, and its forward or backward tilt angle and height from the ground can be adjusted through two sealing plates 205 to obtain different forward or backward tilt angles and heights from the ground. The middle partition 206 is not only a space structure partition between the positive pressure back-blowing chamber 202 and the negative pressure dust suction chamber 203, but also an adjustment mechanism for obtaining an ideal suction-assisting effect according to different operating speeds and positive pressure back-blowing airflow speeds.

[0058] Furthermore, the interior of the suction cup housing 201 is partitioned into a positive-pressure back-blowing chamber 202 and a negative-pressure dust suction chamber 203 by the middle partition plate 206. Both the positive-pressure back-blowing chamber 202 and the negative-pressure dust suction chamber 203 are a transversely long and narrow space.

[0059] The positive pressure airflow connecting pipe 207 above the positive pressure back-blowing chamber 202 is connected to the positive pressure airflow riser 108 of the positive pressure airflow channel through a corrugated hose, thereby guiding the positive pressure airflow generated by the fan 3 to the positive pressure back-blowing chamber 202 .

[0060] The negative pressure airflow connecting pipe 208 above the negative pressure dust suction chamber 203 is connected to the vertical dust suction pipe 105 of the negative pressure airflow channel through a corrugated hose, thereby guiding the negative pressure environment generated by the fan 3 in the garbage compartment 103 to the negative pressure dust suction chamber 203.

[0061] The present invention adopts a suction cup structure with positive pressure airflow and negative pressure airflow dual chambers integrated and arranged in parallel, so that the suction cup has positive pressure airflow and negative pressure airflow acting on the road garbage particles at the same time during operation. When positive pressure blowing is formed on the road garbage in the positive pressure back-blowing chamber 202, the positive pressure blowing blows to the road garbage at a high speed and a certain forward angle, and is reflected on the road surface, so that the road garbage starts quickly, and the road garbage will move forward and rise with the high-speed airflow, and enter the negative pressure dust suction chamber 203 at the same time, and rise into the garbage compartment 103 under the action of the negative pressure airflow, so as to realize the rapid and reliable suction and pickup of road garbage particles, and improve the rapid suction and pickup ability of the suction cup.

[0062] Specifically, the rear wall plate of the suction cup shell 201 is provided with a blowing guide plate 209 through a rotating shaft; an adjusting nut seat 210 is provided on the outer wall of the blowing guide plate 209, and a fixing nut seat 211 is provided on the front wall plate of the suction cup shell 201. The fixing nut seat 211 and the adjusting nut seat 210 are connected by a swinging adjusting screw 212.

[0063] In this embodiment, the blowing guide plate 209 is an arc-shaped plate or a flat plate, which is horizontally hinged on the rear wall plate of the suction cup housing 201 through a rotating shaft. The swing adjustment screw 212 is used to adjust the spacing between the fixed nut seat 211 and the adjustable nut seat 210, so that the backward angle of the blowing guide plate 209 can be adjusted. The change of this angle can change the reverse blowing angle. When the operating speed is different, different angles of reverse blowing are required to maintain a proper reflection angle to obtain the best suction-aiding effect. Both the fixed nut seat 211 and the adjustable nut seat 210 are rotatably installed on the nut seat.

[0064] Specifically, the front wall plate of the suction cup shell 201 is provided with a suction cup windshield curtain 213 through a core shaft. The suction cup windshield curtain 213 includes a plurality of windshield sub-curtains 214 with the top sleeved on the core shaft. The windshield sub-curtains 214 include a first sub-curtain 215 and a second sub-curtain 216. The first sub-curtain 215 and the second sub-curtain 216 are relatively staggered.

[0065] In the present embodiment, the suction cup wind shield curtain 213 is composed of a plurality of sections of wind shield sub-curtains 214 arranged across the entire width of the suction cup shell 201. Under normal operating conditions, each section of the wind shield sub-curtain 214 of the suction cup wind shield curtain 213 is in a drooping state or in an inwardly inclined state at a certain angle. When there are larger-sized garbage particles (such as beverage bottles, etc.) in front of the suction cup wind shield curtain 213, the wind shield sub-curtains 214 hit by the garbage particles can swing inward, thereby increasing the ground clearance of the corresponding position of the suction cup shell 201, allowing the garbage particles to enter the interior of the suction cup shell 201 and then be sucked up. When large-sized garbage enters the suction cup shell 201, the inward-swinging wind shield sub-curtains 214 automatically reset to maintain the original ground clearance, thereby preserving the normal air intake and wind speed of the suction cup shell 201.

[0066] Although the specific implementation of the invention is described in detail in conjunction with the drawings, it should not be understood as limiting the scope of protection of this patent. Within the scope described in the claims, various modifications and variations that can be made by those skilled in the art without creative work still fall within the scope of protection of this patent.

Claims

1. An airflow circulation type suction and sweeping device for a high-speed suction and sweeping vehicle, characterized in that: It comprises an airflow circulation box (1) and a cleaning suction cup assembly (2); The air circulation box (1) is provided with a positive pressure air flow channel and a negative pressure air flow channel, the cleaning suction cup assembly (2) comprises a suction cup shell (201), and the suction cup shell (201) is provided with a positive pressure back-blowing chamber (202) and a negative pressure dust suction chamber (203); The positive-pressure airflow channel is in communication with the positive-pressure back-blowing chamber (202); and the negative-pressure airflow channel is in communication with the negative-pressure dust suction chamber (203).

2. The airflow circulation type suction and sweeping device for a high-speed suction and sweeping vehicle according to claim 1, characterized in that: The airflow circulation box (1) is provided with a first partition (101) inside, and the airflow circulation box (1) is divided into a fan compartment (102) for placing a fan (3) and a garbage compartment (103) forming a negative pressure airflow channel inside by the first partition (101); The negative pressure air flow outlet (104) of the garbage compartment (103) is connected to the air inlet of the fan (3); a vertical dust suction pipe (105) is arranged inside the garbage compartment (103), and the bottom of the vertical dust suction pipe (105) is connected to the negative pressure dust suction chamber (203).

3. The airflow circulation type suction and sweeping device for a high-speed suction and sweeping vehicle according to claim 2, characterized in that: A second partition plate (106) is provided on the upper part of the air circulation box (1), and a positive pressure air flow channel is formed between the second partition plate (106) and the top plate of the air circulation box (1); the positive pressure air flow inlet (107) of the positive pressure air flow channel is connected to the air outlet of the fan (3); Positive pressure air flow risers (108) are provided on both sides of the rear end of the garbage compartment (103), one end of the positive pressure air flow riser (108) is connected to the positive pressure air flow channel, and the other end of the positive pressure air flow riser (108) passes through the bottom plate of the garbage compartment (103) and is connected to the positive pressure back-blowing chamber (202).

4. The airflow circulation type suction and sweeping device for a high-speed suction and sweeping vehicle according to claim 3, characterized in that: A diverter plate (109) is provided on the lower surface of the second partition plate (106) located directly above the vertical dust suction pipe (15), and a baffle plate (110) is provided between the vertical dust suction pipe (105) and the negative pressure air flow outlet (104).

5. The airflow circulation type suction and sweeping device for a high-speed suction and sweeping vehicle according to claim 1, characterized in that: A through groove (204) is provided in the middle of the upper surface of the suction cup shell (201), and a middle partition plate (206) is provided in the through groove (204) through two sealing plates (205) and clamped therein, and the middle partition plate (206) divides the interior of the suction cup shell (201) into a positive pressure back-blowing chamber (202) and a negative pressure dust suction chamber (203); The positive-pressure back-blowing chamber (202) is connected to the positive-pressure airflow channel via a positive-pressure airflow connecting pipe (207); and the negative-pressure dust suction chamber (203) is connected to the negative-pressure airflow channel via a negative-pressure airflow connecting pipe (208).

6. The airflow circulation type suction and sweeping device for a high-speed suction and sweeping vehicle according to claim 5, characterized in that: The rear wall plate of the suction cup housing (201) is provided with a blowing guide plate (209) via a rotating shaft; an adjusting nut seat (210) is provided on the outer wall of the blowing guide plate (209); a fixing nut seat (211) is provided on the front wall plate of the suction cup housing (201); the fixing nut seat (211) and the adjusting nut seat (210) are connected via a swing adjusting screw rod (212).

7. The airflow circulation type suction and sweeping device for a high-speed suction and sweeping vehicle according to claim 5, characterized in that: The front wall plate of the suction cup housing (201) is provided with a suction cup wind-shielding curtain (213) via a core shaft. The suction cup wind-shielding curtain (213) comprises a plurality of wind-shielding sub-curtains (214) whose tops are sleeved on the core shaft. The wind-shielding sub-curtains (214) comprise a first sub-curtain (215) and a second sub-curtain (216). The first sub-curtain (215) and the second sub-curtain (216) are arranged in a staggered manner relative to each other.

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