Sanitation vehicle and its dust suppression structure

Abstract

The present invention provides a dust reduction structure for a sanitation vehicle, including a sanitation vehicle body, a garbage suction pipe extending downward from the body, and an exhaust duct arranged on the top thereof; and also including a foam liquid storage box fixedly mounted on the sanitation vehicle body and containing foam liquid, a foam liquid delivery pipe extending into the body of the sanitation vehicle is arranged at the bottom of the foam liquid storage box, and a bubble nozzle for blowing dust reduction bubbles out of the foam liquid is arranged at the delivery end of the foam liquid delivery pipe. The foam liquid storage box is integrated on the sanitation vehicle body, and during the operation of the sanitation vehicle, the foam liquid is delivered into the body of the sanitation vehicle through the foam liquid delivery pipe, and the foam liquid is blown into the body of the sanitation vehicle in the form of water bubbles through the bubble nozzle, and combined with the dust inside to reduce dust, thereby achieving a better dust reduction effect. The present invention also provides a sanitation vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of sanitation vehicles, and more specifically, to a sanitation vehicle and a dust reduction structure thereof. Background Art

[0002] Among sanitation vehicles, especially road sweepers, dust is raised seriously during operation. The current spray dust suppression is difficult to control, and a large amount of dust is still injected into the air. Especially in areas with serious dust accumulation on the ground, once the road sweeper starts the operation mode, the operating vehicle is instantly covered by dust, which has seriously polluted the environment or caused the road sweeper to be unable to operate. At present, the spray dust suppression measures for road sweepers mainly include the following two parts: the first is to spray at the sweeping brush of the road sweeper to suppress dust on the sweeping brush; the second is to arrange an atomizing nozzle in the inner cavity of the suction pipe to spray water to suppress dust. If the amount of water for simple spray dust suppression is too small, the dust suppression effect cannot be achieved. If the amount of water is increased, a large water tank will need to be designed, which will inevitably compress the volume space of other accessories such as garbage bins for the limited vehicle space. Moreover, for sections with serious dust accumulation, spray dust suppression is difficult to achieve dust suppression effect.

[0003] Currently, there are vacuum cleaners and dust-free dry sweepers on the market that use filter cartridges to remove dust. This type of road cleaning equipment with filter cartridges does not require a large number of large filter cartridges, so the capacity of the garbage bin is smaller than that of a sweeper with spray dust reduction. In addition, the specific operating section is a purely dry road surface. Once it encounters accumulated water or a wet road surface, it will cause irreversible damage to the filter cartridge.

[0004] For road sweepers with spray dust suppression, the space for the garbage bin and other accessories must be compressed based on the limited vehicle volume. When the volume of the garbage bin is compressed, the effective volume is reduced, which is not good for the road sweeper. In addition, the road sweeper needs to be filled with a tank of water when going out for operation. For a pure electric road sweeper, the increase in load will lead to an increase in power consumption, reducing the operating range of the road sweeper.

[0005] Similarly, for vacuum cleaners and dust-free dry sweepers, the need to add filter cartridges also compresses the effective volume of the trash bin, increases the curb weight, and reduces the battery life. In addition, road sweepers with filter cartridges cannot operate on wet roads or waterlogged roads, because once the filter element is stained with mud and sand, it cannot be cleaned, resulting in damage to the filter element; and because of the addition of filter elements, in order to achieve a better filtering effect, the pressure loss of the airflow reaches more than 1KPa, which increases the load of the centrifugal fan of the road sweeper and reduces the cleaning operation capacity.

[0006] Therefore, how to achieve effective dust removal for sanitation vehicles is a problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0007] In view of this, the present invention provides a dust reduction structure for a sanitation vehicle to achieve effective dust removal for the sanitation vehicle; the present invention also provides a sanitation vehicle.

[0008] In order to achieve the above object, the present invention provides the following technical solutions:

[0009] A dust reduction structure for a sanitation vehicle comprises a sanitation vehicle box body, a garbage suction pipe extending downward from the box body, and an exhaust air duct arranged on the top of the box body;

[0010] It also includes a foam liquid storage box fixedly mounted on the sanitation vehicle body and containing foam liquid. A foam liquid delivery pipe extending into the sanitation vehicle body is arranged at the bottom of the foam liquid storage box. A bubble nozzle for blowing dust reduction bubbles out of the foam liquid is arranged at the delivery end of the foam liquid delivery pipe.

[0011] Preferably, in the above-mentioned dust reduction structure of the sanitation vehicle, the bubble nozzle is an annular liquid outlet pipe arranged at the delivery end of the foam liquid delivery pipe, and a plurality of liquid outlets are arranged around the inner circle of the annular liquid outlet pipe;

[0012] The invention also comprises an air blowing pipeline which is opposite to the annular liquid outlet pipe and blows air to the annular inner circle thereof.

[0013] Preferably, in the above-mentioned dust reduction structure for sanitation vehicles, the air blowing pipeline includes an air duct connected to the exhaust air duct, and an air flow nozzle arranged at the air outlet end of the air duct and opposite to the inner circle of the annular liquid outlet pipe.

[0014] Preferably, in the above-mentioned dust reduction structure of the sanitation vehicle, the air outlet end of the air duct is provided with an annular air pipe which surrounds and is mounted on the end of the suction pipe of the garbage suction pipe, and the air flow nozzle includes a plurality of nozzles distributed on the annular air pipe;

[0015] The delivery end of the foam liquid delivery pipe is provided with a foam liquid annular outlet pipe which surrounds the suction pipe end of the garbage suction pipe, and a plurality of annular liquid outlet pipes corresponding to the positions of the airflow nozzles are distributed on the foam liquid annular outlet pipe.

[0016] Preferably, in the above-mentioned dust reduction structure for sanitation vehicles, the blowing direction of the airflow nozzle is arranged opposite to the suction direction of the garbage suction pipe.

[0017] Preferably, in the above-mentioned dust reduction structure of the sanitation vehicle, the foam liquid storage box frame is mounted on the outer wall of the sanitation vehicle body, the foam liquid delivery pipe extends downward to the bottom wall plate of the sanitation vehicle body, and is attached to the outer tube wall of the garbage suction pipe.

[0018] Preferably, in the above-mentioned dust reduction structure for sanitation vehicles, the negative pressure of the sanitation vehicle box after the airflow is extracted by the exhaust air duct is -3500Pa to -5200Pa;

[0019] The ratio of the diameter D1 of the air duct to the nozzle diameter D2 of the air flow nozzle is 3 to 4;

[0020] The ratio of the infusion pipe diameter D3 of the foam liquid delivery pipe to the annular pipe diameter D4 of the annular liquid outlet pipe is 1.2-2.

[0021] Preferably, in the above-mentioned dust reduction structure for sanitation vehicles, the ratio of the air duct diameter D1 of the air duct to the nozzle diameter D2 of the air flow nozzle is 10 / 3;

[0022] The ratio of the infusion pipe diameter D3 of the foam liquid delivery pipe to the annular pipe diameter D4 of the annular liquid outlet pipe is 3 / 2.

[0023] Preferably, in the above-mentioned dust reduction structure for sanitation vehicles, the bubbling velocity of the airflow ejected from the airflow nozzle is 28m / s to 35m / s, and the inner diameter of the annular liquid outlet pipe is 5 to 7mm.

[0024] A sanitation vehicle comprises a vehicle body and a sanitation vehicle box body mounted on the vehicle body, wherein the sanitation vehicle box body has the sanitation vehicle dust reduction structure as described in any one of the above items.

[0025] The dust reduction structure of a sanitation vehicle provided by the present invention comprises a sanitation vehicle box body, a garbage suction pipe extending downward from the box body, and an exhaust air duct arranged on the top thereof; and also comprises a foam liquid storage box fixedly mounted on the sanitation vehicle box body and containing foam liquid, a foam liquid delivery pipe extending into the inside of the sanitation vehicle box body is arranged at the bottom of the foam liquid storage box, and a bubble nozzle for blowing dust reduction bubbles out of the foam liquid is arranged at the delivery end of the foam liquid delivery pipe. The foam liquid storage box is integrated on the sanitation vehicle box body, and during the operation of the sanitation vehicle, the foam liquid is delivered into the inside of the sanitation vehicle box body through the foam liquid delivery pipe, and the foam liquid is blown into the sanitation vehicle box body in the form of water bubbles through the bubble nozzle, and is combined with the dust inside to reduce dust, thereby achieving a better dust reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of the dust reduction structure of a sanitation vehicle provided by the present invention;

[0028] Figure 2 for Figure 1 A partial enlarged view of the pipeline layout structure at the end of the medium garbage straw. DETAILED DESCRIPTION

[0029] The invention discloses a dust reduction structure for a sanitation vehicle, which realizes effective dust removal for the sanitation vehicle; the invention also provides a sanitation vehicle.

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] like Figure 1 and Figure 2 As shown, Figure 1 A schematic diagram of the dust reduction structure of a sanitation vehicle provided by the present invention; Figure 2 for Figure 1 A partial enlarged view of the pipeline layout structure at the end of the medium garbage straw.

[0032] The present embodiment provides a dust reduction structure for a sanitation vehicle, including a sanitation vehicle housing 1, a garbage suction pipe 2 extending downward from the housing, and an exhaust air duct 4 arranged on the top thereof; and also including a foam liquid storage box 3 fixedly mounted on the sanitation vehicle housing 1 and containing foam liquid, a foam liquid delivery pipe 8 extending into the interior of the sanitation vehicle housing 1 is arranged at the bottom of the foam liquid storage box 3, and a bubble nozzle 10 for blowing dust reduction bubbles out of the foam liquid is arranged at the delivery end of the foam liquid delivery pipe 8. The foam liquid storage box 3 is integrated on the sanitation vehicle housing 1. During the operation of the sanitation vehicle, the foam liquid is delivered into the interior of the sanitation vehicle housing 1 through the foam liquid delivery pipe 8, and the foam liquid is blown into the sanitation vehicle housing 1 in the form of water bubbles through the bubble nozzle 10, and combined with the dust inside to reduce dust, thereby achieving a better dust reduction effect.

[0033] In a specific embodiment of the present case, the bubble nozzle 10 is an annular liquid outlet pipe arranged at the delivery end of the foam liquid delivery pipe 8, and the inner circle of the annular liquid outlet pipe is surrounded by multiple liquid outlets; it also includes a blowing pipeline that is opposite to the annular liquid outlet pipe and blows airflow to its annular inner circle. The foam liquid adopts an annular liquid outlet pipe with an annular structure and flows out from the inner circle liquid outlet of the annular liquid outlet pipe. The liquid outlet includes multiple inner circles surrounding the annular liquid outlet pipe. The foam liquid in the foam liquid delivery pipe 8 is filled into the annular liquid outlet pipe. After flowing out through the liquid outlet, the airflow blown out of the blowing pipeline passes through the middle of the annular liquid outlet pipe and blows to the foam liquid sprayed from the liquid outlet to generate bubbles, thereby realizing the continuous delivery of bubbles.

[0034] In a specific embodiment of the present case, the blowing pipeline includes an air duct 5 connected to the exhaust air duct 4, and an air flow nozzle 7 arranged at the air outlet end of the air duct 5 and opposite to the inner circle of the annular liquid outlet pipe.

[0035] The foam liquid is sprayed out in liquid form through the annular liquid outlet pipe, and bubbles are generated by the blowing airflow, which requires the problem of airflow supply and the foam liquid delivery pipe 8 providing delivery pressure. A fan is arranged on the top of the sanitation vehicle box 1, and air is drawn through the exhaust duct 4 on the top of the sanitation vehicle box 1, so that the garbage suction pipe 2 can suck the garbage at the bottom of the sanitation vehicle box 1 into the sanitation vehicle box 1. This process makes the inside of the sanitation vehicle box in a negative pressure state.

[0036] By utilizing the negative pressure inside the sanitation vehicle body 1 and the exhaust airflow in the exhaust duct 4, the blowing pipeline draws out the airflow in the exhaust duct 4 through the air duct 5, and blows the airflow to the inner circle of the annular liquid outlet pipe through the airflow nozzle 7, thereby eliminating the need to set up external airflow and simplifying the air supply structure.

[0037] At the same time, by utilizing the negative pressure state in the sanitation vehicle body 1 under working condition, the foam liquid inside the foam box storage box 3 is subjected to the normal atmospheric pressure and the liquid's own gravity, forming a pressure difference with the inside of the sanitation vehicle body 1, so that the foam liquid can be automatically transported and sprayed out through the annular liquid outlet pipe. There is no need to set up an independent power device, thus avoiding the addition of additional power structure in the sanitation vehicle and reducing costs.

[0038] In a specific embodiment of the present case, the air outlet end of the air duct 5 is provided with an annular air pipe 9 which is mounted on a surrounding frame on the end of the suction pipe of the garbage suction pipe, and the air flow nozzle 7 includes a plurality of nozzles distributed on the annular air pipe 9; the delivery end of the foam liquid delivery pipe 8 is provided with an annular foam liquid outlet pipe 11 which is mounted on a surrounding frame on the end of the suction pipe of the garbage suction pipe 2, and a plurality of annular liquid outlet pipes (referring to the bubble nozzle 10) corresponding to the position of the air flow nozzle are distributed on the foam liquid annular outlet pipe 11.

[0039] The foam liquid delivery pipe 8 is fixed by the garbage suction pipe 2. Considering that the amount of bubbles generated by the foam liquid is adapted to the amount of dust in the sanitation vehicle body 1, a plurality of annular liquid outlet pipes are provided so that bubbles can be blown out at multiple points at the same time.

[0040] Specifically, an annular air pipe 9 is provided at the air outlet end of the air duct 5 and mounted on the end of the garbage suction pipe 2. A plurality of airflow nozzles 7 are distributed on the annular air pipe 9, so that a plurality of airflow blowing points can be formed simultaneously.

[0041] Correspondingly, the delivery end of the foam liquid delivery pipe 8 is also provided with a foam liquid annular outlet pipe 11 of an annular structure, which is mounted around the end of the garbage suction pipe 2, and a plurality of annular liquid outlet pipes extend therefrom, corresponding to the air flow nozzle 7. During the foam liquid delivery process, the foam liquid is delivered and filled into the foam liquid annular outlet pipe through the foam liquid delivery pipe, and finally sprayed out through the liquid outlet of the annular liquid outlet pipe.

[0042] In a specific embodiment of the present case, the blowing direction of the airflow nozzle 7 is arranged opposite to the suction direction of the garbage suction pipe 2. The garbage suction pipe is located in the middle of the sanitation vehicle body, and its suction direction is toward the baffle 6 on the top of the sanitation vehicle body. The airflow sucked in by the garbage suction pipe 2 is blown to the baffle 6 so that the airflow direction in the sanitation vehicle is two dust-laden airflows, one forward and one backward. In order to improve the mixing effect of water bubbles and dust in the sanitation vehicle, the blowing direction of the airflow nozzle 7 is opposite to the suction direction of the garbage suction pipe 2. Then, the trajectory of the water bubbles blown out by the airflow nozzle 7 collides with the dust-laden airflow and flows with the dust-laden airflow, thereby improving the combination of water bubbles and dust and improving the dust reduction effect. The flow trajectory of the dust-laden airflow is shown in FIG. Figure 1 As shown by the thick arrow, the bubble trajectory is Figure 1 Indicated by the thin arrow.

[0043] In a specific embodiment of the present case, the foam liquid storage tank 3 is mounted on the outer wall of the sanitation vehicle box 1, and the foam liquid delivery pipe 8 extends downward to the bottom wall of the sanitation vehicle box 1 and is attached to the outer wall of the garbage suction pipe 2. In order to ensure that the negative pressure in the sanitation vehicle box 1 can provide sufficient foam liquid delivery pressure, the foam liquid storage tank 3 is mounted at a higher position of the sanitation vehicle box 1, and the lowest liquid level of the foam liquid storage tank 3 is preferably higher than the height of the foam liquid annular outlet pipe 11. At the same time, to avoid interference of garbage inside the sanitation vehicle box 1 with the foam liquid delivery pipe, the foam liquid delivery pipe is attached to the bottom wall of the sanitation vehicle box and delivered through the outer wall of the garbage suction pipe, thereby improving the layout safety of the foam delivery pipe.

[0044] In a specific embodiment of the present case, the negative pressure of the sanitation vehicle box 1 after the air flow is extracted by the exhaust air duct 4 is -3500Pa to -5200Pa; the ratio of the induced air pipe diameter D1 of the induced air pipe 5 to the nozzle diameter D2 of the air flow nozzle 7 is 3 to 4; the ratio of the infusion pipe diameter D3 of the foam liquid delivery pipe 8 to the annular pipe diameter D4 of the annular liquid outlet pipe (bubble nozzle 10) is 1.2 to 2. The induced air pipe diameter D1 and the nozzle diameter D2 affect the final velocity of the air flow ejected by the air flow nozzle. The ratio of the infusion pipe diameter D3 and the annular pipe diameter D4 determines the ejection rate of the foam liquid, and the ratio of the two determines the final amount of water bubbles generated. By controlling the pipe diameters at different positions, it is ensured that the amount of water bubbles is adapted to the amount of dust in the sanitation vehicle box. The pipe diameter of the garbage suction pipe D5 determines the negative pressure in the sanitation vehicle box 1.

[0045] Preferably, the ratio of the diameter D1 of the air duct 5 to the nozzle diameter D2 of the air flow nozzle 7 is 10 / 3; the ratio of the infusion diameter D3 of the foam liquid delivery pipe 8 to the annular diameter D4 of the annular liquid outlet pipe 11 is 3 / 2.

[0046] The bubbling velocity of the airflow sprayed from the airflow nozzle 7 is set to 28m / s to 35m / s, and the inner diameter of the annular liquid outlet pipe is set to 5 to 7mm, so as to achieve a better dust reduction effect.

[0047] Based on the dust reduction structure for sanitation vehicles provided in the above embodiments, the present invention further provides a sanitation vehicle, including a vehicle body and a sanitation vehicle box body mounted on the vehicle body, the sanitation vehicle box body having the dust reduction structure for sanitation vehicles provided in the above embodiments.

[0048] Since the sanitation vehicle adopts the sanitation vehicle dust reduction structure of the above embodiment, please refer to the above embodiment for the beneficial effects brought by the sanitation vehicle dust reduction structure.

[0049] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dust reduction structure for a sanitation vehicle, characterized in that: It comprises a sanitation vehicle box body, a garbage suction pipe extending downward from the box body, and an exhaust air duct arranged on the top of the box body; It also includes a foam liquid storage box fixedly mounted on the sanitation vehicle body and containing foam liquid, a foam liquid delivery pipe extending into the sanitation vehicle body is provided at the bottom of the foam liquid storage box, and a bubble nozzle for blowing dust-reducing bubbles from the foam liquid is provided at the delivery end of the foam liquid delivery pipe; The bubble nozzle is an annular liquid outlet pipe arranged at the delivery end of the foam liquid delivery pipe, and a plurality of liquid outlets are arranged around the inner circle of the annular liquid outlet pipe; It also includes a blowing pipeline opposite to the annular liquid outlet pipe and blowing air flow to the annular inner circle thereof; A fan is arranged on the top of the sanitation vehicle body for exhausting air from the exhaust air duct to create a negative pressure in the sanitation vehicle body, so that the foam liquid in the foam box storage box is automatically sprayed out from the annular liquid outlet pipe and the blowing pipeline automatically blows airflow.

2. The dust reduction structure for sanitation vehicles according to claim 1, characterized in that: The air blowing pipeline includes an air induction pipe connected to the exhaust air duct, and an air flow nozzle arranged at the air outlet end of the air induction pipe and opposite to the inner circle of the annular liquid outlet pipe.

3. The dust reduction structure for sanitation vehicles according to claim 2, characterized in that: The air outlet end of the air duct is provided with an annular air pipe which surrounds and is mounted on the end of the suction pipe of the garbage suction pipe, and the air flow nozzle includes a plurality of nozzles distributed on the annular air pipe; The delivery end of the foam liquid delivery pipe is provided with a foam liquid annular outlet pipe which surrounds the suction pipe end of the garbage suction pipe, and a plurality of annular liquid outlet pipes corresponding to the positions of the airflow nozzles are distributed on the foam liquid annular outlet pipe.

4. The dust reduction structure for sanitation vehicles according to claim 3, characterized in that: The blowing direction of the airflow nozzle is arranged opposite to the suction direction of the garbage suction pipe.

5. The dust reduction structure for sanitation vehicles according to claim 4, characterized in that: The foam liquid storage box frame is mounted on the outer wall of the sanitation vehicle box body, and the foam liquid delivery pipe extends downward to the bottom wall plate of the sanitation vehicle box body and is attached to the outer pipe wall of the garbage suction pipe.

6. The dust reduction structure for sanitation vehicles according to claim 3, characterized in that: The negative pressure of the sanitation vehicle box after the airflow is extracted by the exhaust duct is -3500Pa to -5200Pa; The ratio of the diameter D1 of the air duct to the nozzle diameter D2 of the air flow nozzle is 3 to 4; The ratio of the infusion pipe diameter D3 of the foam liquid delivery pipe to the annular pipe diameter D4 of the annular liquid outlet pipe is 1.2-2.

7. The dust reduction structure for sanitation vehicles according to claim 6, characterized in that: The ratio of the diameter D1 of the air duct to the nozzle diameter D2 of the air flow nozzle is 10 / 3; The ratio of the infusion pipe diameter D3 of the foam liquid delivery pipe to the annular pipe diameter D4 of the annular liquid outlet pipe is 3 / 2.

8. The dust reduction structure for sanitation vehicles according to claim 3, characterized in that: The bubbling velocity of the airflow ejected from the airflow nozzle is 28m / s to 35m / s, and the inner diameter of the annular liquid outlet pipe is 5 to 7mm.

9. A sanitation vehicle, comprising a vehicle body and a sanitation vehicle box mounted on the vehicle body, characterized in that: The sanitation vehicle box body has the sanitation vehicle dust reduction structure as described in any one of claims 1-8.

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