A foam dust suppression device and a sanitation vehicle

Abstract

The present invention discloses a foam dust suppression device and a sanitation vehicle. The foam dust suppression device includes a dust collection hood, a bubble blowing nozzle, and a foam liquid supply device. The dust collection hood is connected to a negative pressure device; the bubble blowing nozzle includes a foaming agent nozzle and a nozzle body. The foaming agent nozzle is sleeved outside the nozzle body, and a pore communicating with the inner cavity of the dust collection hood is formed between the foaming agent nozzle and the nozzle body. The nozzle body communicates the inner cavity of the dust collection hood with the outside; the foam liquid supply device is communicated with the pore. The above-mentioned foam dust removal device can effectively reduce the dust concentration in the air flow, fundamentally prevent dust diffusion. Compared with the existing spray dust suppression, since the water consumption is greatly reduced, the water tank volume of the foam liquid supply device is correspondingly greatly reduced, the effective volume of the garbage bin can be increased, the vehicle load can be reduced, which helps to increase the operation endurance mileage of the electric sanitation vehicle; at the same time, since there is no need to install a filter element, space can also be saved, the capacity of the garbage bin can be enlarged, and the defect that the filter element cannot operate on a wet road surface or a waterlogged road surface is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental sanitation equipment, and particularly relates to a foam dust suppression device and an environmental sanitation vehicle. Background Art

[0002] Among environmental sanitation vehicle products, especially road sweepers, serious dust is generated 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 ground dust accumulation, once the road sweeper starts the operation mode, the operation vehicle is instantly obscured by the dust, which has seriously polluted the environment or caused the road sweeper to be unable to operate. Currently, the spray dust suppression measures for road sweepers mainly include the following three points. First, spray at the sweeping brush of the road sweeper to control the dust suppression of the sweeping brush. Second, arrange atomizing nozzles in the inner cavity of the suction pipe to spray water for dust suppression. 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 very large water tank needs to be designed, which will inevitably compress the volume space of other accessories such as the garbage bin for the limited on-vehicle space. Moreover, for sections with serious dust accumulation, it is difficult to achieve the dust suppression effect by spray dust suppression. Third, filter element dust removal is adopted. This road cleaning operation equipment with filter elements has a smaller garbage bin capacity compared to the road sweeper with spray dust suppression because a large number of large-volume filter elements need to be arranged. And the operation section is limited and must be used on dry roads. Once it encounters water accumulation or a wet road surface, irreversible damage will be caused to the filter elements. Summary of the Invention

[0003] In view of this, one of the purposes of the present invention is to provide a foam dust suppression device to improve the dust suppression effect, prevent dust diffusion, reduce water consumption, and make the environmental sanitation vehicle applying the foam dust suppression device more adaptable and not restricted by road conditions.

[0004] Another purpose of the present invention is to provide an environmental sanitation vehicle based on the above foam dust suppression device.

[0005] To achieve the above purposes, the present invention provides the following technical solutions:

[0006] A foam dust suppression device, comprising:

[0007] A dust collection cover, which is connected to a negative pressure device;

[0008] A bubble blowing nozzle, including a foam agent nozzle and a nozzle. The foam agent nozzle is sleeved outside the nozzle, and a pore communicating with the inner cavity of the dust collection cover is formed between the foam agent nozzle and the nozzle. The nozzle communicates the inner cavity of the dust collection cover with the outside;

[0009] A foam liquid supply device communicating with the pore.

[0010] Preferably, the foam agent nozzle is coaxially arranged with the air nozzle, and the pores are arranged in a ring around the outlet of the air nozzle.

[0011] Preferably, the inner diameter D1 of the air nozzle, the outer diameter D2 of the air nozzle, and the inner diameter D3 of the foam agent nozzle satisfy D3 - D2 < D1.

[0012] Preferably, the inner diameter D1 of the air nozzle, the outer diameter D2 of the air nozzle, and the inner diameter D3 of the foam agent nozzle satisfy D1:D2:D3 = 2:4:5.

[0013] Preferably, a plurality of the bubble blowing nozzles are provided, and the pores of each of the bubble blowing nozzles are respectively communicated with the foam liquid supply device.

[0014] Preferably, the plurality of bubble blowing nozzles are arranged along the circumferential direction of the dust collection hood. A liquid distribution ring is arranged above each of the bubble blowing nozzles. The liquid distribution ring is communicated with the pores of each of the bubble blowing nozzles through connecting pipes corresponding to each of the bubble blowing nozzles one by one, and the liquid distribution ring is communicated with the foam liquid supply device.

[0015] Preferably, the foam liquid supply device includes a foam agent water tank and a conveying water pipe, and the conveying water pipe is used to communicate the foam agent water tank with the bubble blowing nozzle.

[0016] Preferably, the liquid level in the foam agent water tank is higher than the outlet of the foam agent nozzle.

[0017] Preferably, the dust collection hood includes a suction nozzle part and a suction pipe part. The suction nozzle part is connected to the negative pressure device through the suction pipe part. One end of the suction nozzle part away from the suction pipe part is in a flared funnel shape, and the bubble blowing nozzle is arranged on at least one of the suction nozzle part and the suction pipe part.

[0018] A sanitation vehicle includes the foam dust reduction device as described in any one of the above.

[0019] To achieve the above-mentioned purpose, the present invention provides a foam dust reduction device, which comprises a dust collecting hood, a bubble blowing nozzle and a foam liquid supply device, wherein the dust collecting hood is connected to a negative pressure device; the bubble blowing nozzle comprises a foam agent nozzle and an air nozzle, the foam agent nozzle is sleeved outside the air nozzle, a gap connected to the inner cavity of the dust collecting hood is formed between the foam agent nozzle and the air nozzle, and the air nozzle connects the inner cavity of the dust collecting hood with the outside; the foam liquid supply device is connected to the gap; when in use, the inlet of the dust collecting hood is close to the ground, the negative pressure device is turned on, part of the external air flow enters the dust collecting hood through the air nozzle, and the foam liquid supply device continuously injects foam liquid into the gap between the foam agent nozzle and the air nozzle, and the foam liquid and the air flow entering the dust collecting hood through the air nozzle are mixed at the outlet end of the bubble blowing nozzle to continuously form bubbles; the bubbles and the dust-containing air flow are continuously mixed in the dust collecting hood, and since the foam fills the entire Dust collecting hood, so the dust carried by the airflow is in full contact with the foam, and the surface of the dust becomes wet and sticky after contacting the foam, so that a large amount of dust sticks to each other in the airflow, and finally forms lumps of soil and falls into the garbage bin to achieve the purpose of efficient dust removal; the above-mentioned foam dust removal device can effectively reduce the dust concentration in the airflow and fundamentally prevent the spread of dust. Compared with spray dust suppression, the water consumption can be reduced by up to 90%, and the dust suppression efficiency is increased by 3 to 5 times. Compared with the existing spray dust suppression, the water consumption is greatly reduced, and the water tank volume of the foam liquid supply device is greatly reduced accordingly, which can increase the effective volume of the garbage bin, reduce the vehicle weight, and help increase the operating range of the electric sanitation vehicle; at the same time, since there is no need to install a filter element, it can also save space, expand the capacity of the garbage bin, and avoid the defect that the filter element cannot operate on wet or flooded roads.

[0020] The present invention also provides a sanitation vehicle, which includes the above-mentioned foam dust reduction device. Since the foam dust reduction device has the above-mentioned beneficial effects, the sanitation vehicle using the foam dust reduction device should also have the same beneficial effects, which will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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.

[0022] Figure 1 An axonometric diagram of a foam dust suppression device provided in an embodiment of the present invention;

[0023] Figure 2 A front view of a foam dust suppression device provided by an embodiment of the present invention;

[0024] Figure 3The side view of the foam dust suppression device provided by the embodiment of the present invention;

[0025] Figure 4 The partial enlarged view of the bubble blowing nozzle of the foam dust suppression device provided by the embodiment of the present invention.

[0026] In the figure:

[0027] 1 is a dust collection hood; 101 is a suction nozzle part; 102 is a suction pipe part; 2 is a bubble blowing nozzle; 201 is a foam agent nozzle; 202 is a nozzle; 3 is a liquid distribution ring; 4 is a foam agent water tank; 5 is a water delivery pipe; 6 is a connecting pipe. Detailed implementation manners

[0028] One of the cores of the present invention is to provide a foam dust suppression device. The structural design of the foam dust suppression device enables it to have a good dust suppression effect, can prevent dust diffusion, reduce water consumption, and its application is not limited by road surface conditions.

[0029] Another core of the present invention is to provide a sanitation vehicle based on the above-mentioned foam dust suppression device.

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Please refer to Figures 1 - 4 , Figure 1 The axonometric view of the foam dust suppression device provided by the embodiment of the present invention, Figure 2 The front view of the foam dust suppression device provided by the embodiment of the present invention, Figure 3 The side view of the foam dust suppression device provided by the embodiment of the present invention, Figure 4 The partial enlarged view of the bubble blowing nozzle of the foam dust suppression device provided by the embodiment of the present invention.

[0032] A foam dust suppression device provided by an embodiment of the present invention, the foam dust suppression device includes a dust collection hood 1, a bubble blowing nozzle 2 and a foam liquid supply device.

[0033] Among them, the dust collection hood 1 is connected to a negative pressure device; the bubble blowing nozzle 2 includes a foam agent nozzle 201 and a nozzle 202. The foam agent nozzle 201 is sleeved outside the nozzle 202, and a pore communicating with the inner cavity of the dust collection hood 1 is formed between the foam agent nozzle 201 and the nozzle 202. The nozzle 202 communicates the inner cavity of the dust collection hood 1 with the outside; the foam liquid supply device is communicated with the pore.

[0034] Compared with the prior art, the foam dust suppression device provided by the embodiment of the present invention uses foam instead of water or filters for dust removal. During application, the inlet of the dust collection hood 1 is close to the ground. The negative pressure device is turned on, and part of the external air flow enters the dust collection hood 1 through the air nozzle 202. The foam liquid supply device continuously injects foam liquid into the gap between the foam agent nozzle 201 and the air nozzle 202. The foam liquid and the air flow entering the dust collection hood 1 through the air nozzle 202 are mixed at the outlet end of the bubble blowing nozzle 2 to continuously form bubbles; the bubbles and the dust-containing air flow are continuously mixed in the dust collection hood 1. Since the foam fills the entire dust collection hood 1, the dust carried by the air flow comes into full contact with the foam. After the dust contacts the foam, its surface becomes wet and sticky, so that a large amount of dust adheres to each other in the air flow and finally forms a lump of soil and falls into the dustbin to achieve the purpose of efficient dust removal; the above-mentioned foam dust removal device can effectively reduce the dust concentration in the air flow, fundamentally prevent dust diffusion, compared with spray dust suppression, the water consumption can be reduced by up to 90%, and the dust suppression efficiency is increased by 3 to 5 times. Compared with the existing spray dust suppression, due to the significant reduction in water consumption, the volume of the water tank of the foam liquid supply device is correspondingly greatly reduced, the effective volume of the dustbin can be increased, the vehicle load can be reduced, which helps to increase the operating range of the electric sanitation vehicle; at the same time, since there is no need to install a filter, space can also be saved, the capacity of the dustbin can be expanded, and the defect that the filter cannot operate on wet or waterlogged roads is avoided.

[0035] As Figure 4 shown, in an embodiment of the present invention, the foam agent nozzle 201 and the air nozzle 202 are coaxially arranged, and the gap is arranged in a ring around the outlet of the air nozzle 202. In this way, the bubble blowing air flow is in the central position, and the foam liquid flows out from the annular gap, ensuring that each drop of foam liquid can form uniform bubbles as expected without waste, so as to achieve a better bubble blowing effect.

[0036] The generation rate and size of the foam can be pre-designed according to the pressure difference, the diameter of the foam agent nozzle 201, the diameter of the air nozzle 202, and the diameter of the gap. In the embodiment of the present invention, the inner diameter D1 of the air nozzle 202, the outer diameter D2 of the air nozzle 202, and the inner diameter D3 of the foam agent nozzle 201 satisfy D3 - D2 < D1. Further, the inner diameter D1 of the air nozzle 202, the outer diameter D2 of the air nozzle 202, and the inner diameter D3 of the foam agent nozzle 201 satisfy D1:D2:D3 = 2:4:5 to ensure a better bubble blowing effect.

[0037] A plurality of bubble blowing nozzles 2 can be arranged on the dust collection hood 1. The gaps of the respective bubble blowing nozzles 2 are respectively communicated with the foam liquid supply device. The respective bubble blowing nozzles 2 can be arranged according to a certain order rule or can be arranged irregularly. Specifically, as Figure 1As shown, a plurality of bubble blowing nozzles 2 are circumferentially and uniformly distributed around the dust collection hood 1. Of course, the plurality of bubble blowing nozzles 2 can also be arranged axially along the dust collection hood 1, or the plurality of bubble blowing nozzles 2 are divided into multiple groups, each group is arranged circumferentially along the dust collection hood 1, and each group is arranged axially along the dust collection hood 1. Alternatively, the plurality of bubble blowing nozzles 2 can be spirally distributed around the dust collection hood 1.

[0038] To further optimize the above technical solution, the plurality of bubble blowing nozzles 2 are arranged circumferentially along the dust collection hood 1. A liquid distribution ring 3 is provided above each bubble blowing nozzle 2. The liquid distribution ring 3 is communicated with the pores of each bubble blowing nozzle 2 through a connecting pipe 6 corresponding to each bubble blowing nozzle 2 one by one. The liquid distribution ring 3 is communicated with the foam liquid supply device. In this way, when in use, the foaming agent first enters the liquid distribution ring 3, and after filling the liquid distribution ring 3, it flows into the bubble blowing nozzle 2 through the connecting pipe 6. By providing the liquid distribution ring 3, the pressure at both ends of each bubble blowing nozzle 2 can tend to be consistent, making the foam in the dust collection hood 1 more uniform.

[0039] Preferably, the foam liquid supply device includes a foaming agent water tank 4 and a conveying water pipe 5. The conveying water pipe 5 is used to communicate the foaming agent water tank 4 with the bubble blowing nozzle 2. The liquid level in the foaming agent water tank 4 is higher than the outlet of the foaming agent nozzle 201. In this way, the foaming agent is pushed to flow from the foaming agent water tank 4 to the bubble blowing nozzle 2 by using the liquid level difference and gravity, without adding an additional pumping device, saving space and cost. At the same time, during the working process, no energy needs to be provided, which helps to reduce energy consumption.

[0040] Of course, the foam liquid supply device can also include a pumping device to convey the foaming agent, which is not limited herein.

[0041] Preferably, in the embodiment of the present invention, as Figures 1 - 3 shown, the dust collection hood 1 includes a suction nozzle part 101 and a suction pipe part 102. The suction nozzle part 101 is connected to a negative pressure device through the suction pipe part 102. The suction nozzle part 101 and the suction pipe part 102 can be an integral structure or a separable and detachable connection structure. One end of the suction nozzle part 101 away from the suction pipe part 102 is in a flared funnel shape, and the bubble blowing nozzle 2 is arranged on at least one of the suction nozzle part 101 and the suction pipe part 102.

[0042] To further optimize the above technical solution, as Figure 3 shown, the suction nozzle part 101 is triangular, with the small end connected to the suction pipe part 102 and the large end forming an inlet, and the large end is in a constricted shape with the width gradually decreasing from the small end to the large end of the suction nozzle part 101 to increase the air flow velocity at the inlet of the dust collection hood 1 and improve the dust collection effect.

[0043] Based on the above foam dust reduction device, the embodiment of the present invention also provides a sanitation vehicle. Since the sanitation vehicle adopts the foam dust reduction device in the above embodiment, the technical effects of the sanitation vehicle can be referred to the above embodiment.

[0044] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other.

[0045] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can 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 will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A foam dust suppression device, characterized in that, Comprising: A dust collection hood, which is connected to a negative pressure device; A bubble blowing nozzle, including a foaming agent nozzle and a nozzle. The foaming agent nozzle is sleeved outside the nozzle, and a pore communicating with the inner cavity of the dust collection hood is formed between the foaming agent nozzle and the nozzle. The nozzle communicates the inner cavity of the dust collection hood with the outside; A foam liquid supply device communicating with the pore; the foaming agent nozzle and the nozzle are coaxially arranged, and the pore is arranged in a ring around the outlet of the nozzle; A plurality of the bubble blowing nozzles are provided, and the pores of each of the bubble blowing nozzles are respectively communicated with the foam liquid supply device; The plurality of bubble blowing nozzles are arranged along the circumferential direction of the dust collection hood. A liquid distribution ring is arranged above each of the bubble blowing nozzles. The liquid distribution ring is communicated with the pores of each of the bubble blowing nozzles through connecting pipes corresponding to each of the bubble blowing nozzles one by one. The liquid distribution ring is communicated with the foam liquid supply device.

2. The foam dust suppression device according to claim 1, characterized in that, The inner diameter D1 of the nozzle, the outer diameter D2 of the nozzle, and the inner diameter D3 of the foaming agent nozzle satisfy D3 - D2 < D1.

3. The foam dust suppression device according to claim 2, characterized in that, The inner diameter D1 of the nozzle, the outer diameter D2 of the nozzle, and the inner diameter D3 of the foaming agent nozzle satisfy D1:D2:D3 = 2:4:

5.

4. The foam dust suppression device according to any one of claims 1-3, characterized in that, The foam liquid supply device includes a foaming agent water tank and a conveying water pipe. The conveying water pipe is used to communicate the foaming agent water tank with the bubble blowing nozzle.

5. The foam dust suppression device according to claim 4, characterized in that, The liquid level in the foaming agent water tank is higher than the outlet of the foaming agent nozzle.

6. The foam dust suppression device according to any one of claims 1-3, characterized in that, The dust collection hood includes a suction nozzle part and a suction pipe part. The suction nozzle part is connected to the negative pressure device through the suction pipe part. One end of the suction nozzle part away from the suction pipe part is in a flared funnel shape. The bubble blowing nozzle is arranged on at least one of the suction nozzle part and the suction pipe part.

7. A sanitation vehicle, characterized in that, Including the foam dust reduction device according to any one of claims 1 - 6.

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