Urban road flying dust treatment device

Abstract

The utility model discloses an urban road raised dust treatment device, which relates to the technical field of raised dust treatment and comprises a support frame and a fog gun device fixedly connected with the support frame, the fog gun device comprises a gun barrel section and a heating pipe section used for heating water flow, and the heating pipe section comprises a first pipe fitting and a second pipe fitting. Runners are arranged between the outer wall of the second pipe fitting and the inner wall of the first pipe fitting and in the second pipe fitting, and a heating piece is arranged in the second pipe fitting; the heating device is additionally arranged on the fog gun, hot air formed by sprayed water mist after heating flows to the upper air of a city, rising hot air transports air containing flying dust to the upper air and then takes away the flying dust by atmospheric circulation, clean air is exchanged in, and compared with a mode of temporarily restraining the flying dust through water spraying for dust falling, the dust falling efficiency is improved. And cleaning and removing of the flying dust in the flying dust treatment area are achieved.

Description

Technical Field

[0001] The utility model relates to the field of dust control, and in particular to a device for controlling dust on urban roads. Background Art

[0002] Road dust is one of the important pollution sources that affect urban air quality and is also the main target of urban air pollution control.

[0003] Existing dust reduction devices usually use water sprinkling to achieve dust reduction. The dust adheres to the ground with the water. After the water evaporates, the dust will float in the air again under the influence of pedestrians and vehicles. The dust in the corresponding space after water sprinkling is not cleaned and removed. Utility Model Content

[0004] The utility model aims to provide a device for controlling dust on urban roads, so as to solve the problem that the existing water sprinkling and dust reduction device can only temporarily suppress dust but cannot clean and remove dust in the control area.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A device for controlling dust on urban roads comprises a support frame and a fog cannon device fixedly connected to the support frame, the fog cannon device is connected to a water pump, the fog cannon device comprises a gun tube section and a heating tube section for heating water flow, the heating tube section comprises a first pipe fitting and a second pipe fitting, flow channels are arranged between the outer wall of the second pipe fitting and the inner wall of the first pipe fitting and in the second pipe fitting, and a heating element is arranged in the second pipe fitting.

[0007] The utility model provides a device for controlling dust on urban roads. By adding a heating device to the fog cannon, a hot air flow is formed by the water mist sprayed out after heating and flows toward the sky above the city. The rising hot air flow transports the air containing dust to high altitude and is then taken away by the atmospheric circulation, exchanging clean air. Compared with the method of temporarily suppressing dust by sprinkling water to reduce dust, the dust in the dust control area is cleaned and removed. At the same time, by adopting the form of a double-layer casing, a heating tube is arranged in the second casing of the inner layer to heat the water flow to be sprayed out, and there is no need to arrange a device for storing hot water. The structure of the device can also be simplified while reducing the energy consumption of the device. At the same time, high-pressure gas is introduced between the first pipe fitting and the second pipe fitting, and the high-pressure air flow produces a strong tearing and shearing effect on the water flow, further improving the atomization effect of the water flow, thereby improving the rising rate of the water mist after spraying, and accelerating the control efficiency.

[0008] Furthermore, a stirring member for stirring the water flow is rotatably connected inside the second pipe member.

[0009] The rotation of the stirring element drives the water flow to rotate, so that the water mist has a certain spiral motion state, and combines with the high-pressure gas in the first pipe to form a spiral airflow, so that the water mist is more evenly distributed in the air, achieving a wider coverage range, and the water mist will diffuse and spread faster under the action of wind, increasing the spraying distance of the fog cannon, thereby improving the dust reduction effect; at the same time, the negative pressure generated in the center of the spiral water mist helps to absorb the surrounding dust, which rises together with the water mist and is carried away.

[0010] Furthermore, the heating element includes a protective layer and a resistance wire built into the protective layer and connected to a power source. The resistance wires are in a plurality and are evenly distributed along the radial direction of the second pipe to form a resistance wire mesh.

[0011] In order to make the water mist sprayed by the device reach the specified temperature to meet the dust removal effect, it is necessary to ensure that the water flow is heated evenly after entering the heating pipe section. By adopting resistance wire and fixing it into a mesh structure along the cross-section of the second pipe, the water flow can be heated more evenly when passing through the heating element. At the same time, the heating element made of resistance wire has little obstruction to the water flow, thereby reducing the kinetic energy loss of the water flow.

[0012] Furthermore, there are a plurality of resistance wire meshes, which are evenly distributed along the axial direction of the second pipe.

[0013] By arranging a plurality of resistance wire meshes in the axial direction in the second pipe, it is ensured that the heating element fully heats the water flow.

[0014] Furthermore, the stirring member includes blades and a rotating shaft arranged on the axis of the second pipe, the rotating shaft is rotatably connected to the second pipe through a conductive slip ring, the blades are multiple and evenly distributed around the axis of the second pipe, the direction of the blades is consistent with the flow direction of water in the second pipe, and the resistance wire mesh is fixedly connected to the blades.

[0015] Since the internal space of the second pipe is limited, the stirring element and the heating element will occupy a large space if they are set separately, which will produce greater resistance to the water flow to be heated. By designing the stirring element and the heating element together, the space occupied can be reduced, thereby reducing the kinetic energy loss of the water flow.

[0016] Furthermore, a first through hole is formed in the side wall of the gun barrel section, and an air supply device for providing wind force tangentially along the inner wall of the gun barrel section is fixedly connected to the first through hole.

[0017] An external air supply device is used to provide tangential wind force for the water mist, thereby increasing the spiral strength of the water mist, further increasing the kinetic energy of the water mist, and increasing the range of the water mist.

[0018] Furthermore, the air supply device includes a fan and a ventilation duct connected to the fan outlet, a partition piece is provided in the ventilation duct along the cross-section of the duct, the partition piece includes a movable plate and a partition plate with a plurality of second through holes and fixedly connected to the inner wall of the ventilation duct, the movable plate is provided with a plurality of third through holes and a plurality of protrusions matching the second through holes, the movable plate is fitted with the partition plate and the movable plate is connected to the partition plate by an elastic piece.

[0019] After the device is deactivated, some water mist will enter the fan through the ventilation duct, which may easily cause corrosion or short circuit to the fan. By setting a partition as an anti-backflow device, the passage between the fan and the duct can be cut off after the device is deactivated, thereby protecting the fan and extending its service life.

[0020] Furthermore, the movable plate is a sheet-like plastic part.

[0021] A plastic sheet-like structural member is used as the movable plate to ensure that no large energy loss occurs when the fan blows the movable plate to bring wind force into the gun barrel section.

[0022] Furthermore, the first pipe fitting includes a first pipe section, a second pipe section and a third pipe section connected to the gun barrel section, the inlet of the first pipe section is connected to a water pump, the inner diameter of the second pipe section is smaller than the inner diameter of the first pipe section, the inner diameter at the inlet of the third pipe section is greater than or equal to the inner diameter of the second pipe section, and the inner diameter of the third pipe section gradually expands in the direction toward the gun barrel section.

[0023] The structure of the pipeline has a great influence on the subsequent water mist spraying effect. By designing the structure of the heating pipe section to reduce the inner diameter first and then increase it, the inner diameter of the pipe is reduced, which can increase the flow rate of the fluid, improve the kinetic energy, make the interaction force between the high-pressure airflow and the water flow greater when they come into contact, and improve the atomization effect. Secondly, the part of the pipe section with an enlarged inner diameter close to the muzzle reduces the fluid velocity and increases the pressure, which helps to reduce the fluid turbulence at the outlet, making the fluid flow smoother, reducing the fluid energy loss and reducing the noise.

[0024] One or more technical solutions provided by the utility model have at least the following technical effects or advantages:

[0025] (1) The utility model provides a device for controlling dust on urban roads. By adding a heating device to the fog cannon, the hot air flow formed by the water mist sprayed out after heating flows toward the sky above the city. The rising hot air flow transports the dust-containing air to high altitudes and is then taken away by the atmospheric circulation, exchanging clean air for it. Compared with the method of temporarily suppressing dust by sprinkling water to reduce dust, the device can clean and remove dust from the dust control area.

[0026] (2) The utility model provides an urban road dust control device, which adopts a double-layer casing, and a heating tube is arranged in the second inner casing to heat the water flow to be sprayed. There is no need to set up a device for storing hot water, which simplifies the structure of the device and reduces the energy consumption of the device. At the same time, high-pressure gas is introduced between the first pipe and the second pipe. The high-pressure gas flow produces a strong tearing and shearing effect on the water flow, further improving the atomization effect of the water flow, thereby increasing the rising rate of the water mist after spraying, and accelerating the control efficiency;

[0027] (3) The utility model provides an urban road dust control device, which drives the water flow to rotate by rotating the stirring element, so that the water mist has a certain spiral motion state, which forms a spiral airflow after combining with the high-pressure gas in the first pipe, so that the water mist is more evenly distributed in the air, achieving a wider coverage range, and the water mist will diffuse and spread faster under the action of wind, thereby increasing the spraying distance of the fog cannon and improving the dust reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of the present utility model, and do not constitute a limitation on the embodiments of the present utility model;

[0029] Figure 1 It is a structural schematic diagram of the urban road dust control device in the utility model;

[0030] Figure 2 This utility model Figure 1 The structural diagram of the middle heating pipe section;

[0031] Figure 3 It is a schematic structural diagram of a heating pipe section including a stirring member and a resistance wire mesh in the utility model;

[0032] Figure 4 It is the gun barrel section of the utility model that includes the air supply device;

[0033] Figure 5 It is a schematic diagram of the structure of the partition member in the separated state in the utility model;

[0034] Among them, 1-support frame, 2-mist cannon device, 201-heating pipe section, 202-gun pipe section, 210-first pipe fitting, 211-second pipe fitting, 214-first pipe section, 215-second pipe section, 216-third pipe section, 3-heating element, 301-resistance wire, 4-stirring element, 401-blade, 402-rotating shaft, 5-air supply device, 501-ventilation duct, 502-fan, 530-partition plate, 531-movable plate, 532-second through hole, 533-protrusion, 534-third through hole. DETAILED DESCRIPTION

[0035] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0036] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those within the scope of this description. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0037] Embodiment 1

[0038] Please refer to Figure 1-Figure 2 An urban road dust control device provided by an embodiment of the utility model comprises a support frame 1 and a fog cannon device 2 fixedly connected to the support frame 1. The material of the support frame 1 can be alloy or plastic. The device provided by the utility model can be directly fixed to a building or the ground through the support frame 1, or installed on a vehicle for easy transfer. The fog cannon device 2 can utilize an existing fog cannon machine, and achieve the effect of spraying water mist after connecting the fog cannon device through an external heating and pressurizing device. As a preferred embodiment, the fog cannon device 2 comprises a gun tube section 202 and a heating pipe section 201 for heating water flow. The fog cannon device 2 is connected to a water pump. The heating pipe section 201 comprises a first pipe fitting 210 and a second pipe fitting 211. The outer wall of the second pipe fitting 211 and the inner wall of the first pipe fitting 210 as well as The second pipe fitting 211 is provided with a flow channel, and the second pipe fitting 211 is provided with a heating element 3, wherein a pressurized airflow is passed through the flow channel between the first pipe fitting 210 and the second pipe fitting 211, and water is passed through the second pipe fitting 211. The heating element 3 may be an electric heating plate or an electric heating rod. By adopting a double-layer casing, a heating tube is arranged in the inner second casing to heat the water flow to be sprayed out, and part of the pipe section of the fog cannon device 2 is directly set as a heating section, without the need for an external device for storing hot water, which simplifies the device structure and reduces the energy consumption of the device. At the same time, high-pressure gas is passed between the first pipe fitting and the second pipe fitting, and the high-pressure airflow produces a strong tearing and shearing effect on the water flow, further improving the atomization effect of the water flow, thereby increasing the rising rate of the water mist after spraying, and accelerating the treatment efficiency.

[0039] As a preferred solution, the first pipe member 210 includes a first pipe section 214, a second pipe section 215 and a third pipe section 216 connected to the gun barrel section 202. The inlet of the first pipe section 214 is connected to a water pump. The inner diameter of the second pipe section 215 is smaller than the inner diameter of the first pipe section 214. The inner diameter of the inlet of the third pipe section 216 is greater than or equal to the inner diameter of the second pipe section 215. The inner diameter of the third pipe section (216) gradually increases in the direction toward the gun barrel section 202. The third pipe section 216 is as follows: Figure 2 The bell-mouth shape shown in the figure increases the flow rate of the fluid and improves the kinetic energy by designing the structure of the heating pipe section so that the inner diameter first decreases and then increases. The inner diameter of the pipe is reduced, which makes the interaction force between the high-pressure airflow and the water flow greater when they come into contact, and the atomization effect is better. Secondly, the part of the pipe section with an enlarged inner diameter close to the muzzle reduces the fluid velocity and increases the pressure, which helps to reduce the fluid turbulence at the outlet, making the fluid flow smoother, reducing the fluid energy loss and reducing the noise.

[0040] The urban road dust removal device provided in this embodiment also includes a fan, the fan blades of which include a plurality of blades spirally wound around the fan shaft and fixedly connected to the shaft to provide spiral wind, and the fan outlet is located directly behind the fog cannon device 2, wherein the outlet diameter of the barrel section 202 of the fog cannon device 2 is smaller than the diameter of the spiral fan, and the sprayed water mist and spiral wind are distributed in an inner and outer double-layer form, and the internal environment of the spiral vortex is in a low-pressure or negative-pressure state with a small amount of air, thereby reducing the turbulence generated after the sprayed water mist contacts the air, and providing a smoother flow environment for the spraying of the water mist, that is, utilizing the spiral wind to reduce the influence of the air resistance on the sprayed water mist, thereby reducing the energy loss of the water mist, and thus increasing the water mist spraying distance of the fog cannon.

[0041] Embodiment 2

[0042] Please refer to Figure 3-Figure 5The utility model provides a device for controlling dust on urban roads based on the first embodiment. A stirring member 4 for stirring water flow is rotatably connected in the second pipe 211. The water flow is driven to rotate by the rotation of the stirring member, so that the water mist has a certain spiral motion state, and forms a spiral airflow after combining with the high-pressure gas in the first pipe, so that the water mist is more evenly distributed in the air, achieving a wider coverage range, and the water mist will diffuse and spread faster under the action of wind, increasing the spraying distance of the fog cannon, thereby improving the dust reduction effect; at the same time, the negative pressure generated in the center of the spiral water mist helps to absorb the surrounding dust, which rises together with the water mist and is taken away; as a preferred embodiment, the heating member 3 includes a protective layer and a built-in protective layer and The resistance wire 301 connected to the power supply, the resistance wire 301 is in a plurality and is evenly distributed along the radial direction of the second pipe 211 to form a resistance wire mesh. The protective layer can be an anti-corrosion coating or a metal shell, which is used to prevent the resistance wire 301 from directly contacting the water flow, which may cause corrosion after a long time and affect its normal use. The resistance wire 301 is used and fixedly set as a mesh structure along the cross-section of the second pipe 211, so that the water flow is heated more evenly when passing through the heating element. At the same time, the heating element made of the resistance wire 301 has little obstruction to the water flow and reduces the kinetic energy loss of the water flow. At the same time, in order to ensure sufficient heating of the water flow and prevent the outlet water mist temperature from failing to meet the requirements, the resistance wire mesh is in a plurality and is evenly distributed along the axial direction of the second pipe 211. Since the internal space of the second pipe is limited, the stirring element and the heating element will occupy a large space if they are set separately, which will produce a large resistance to the water flow to be heated. As a preferred solution, the stirring element 4 includes blades 401 and a rotating shaft 402 arranged on the axis of the second pipe 211. The number of the blades 401 is several and they are evenly distributed around the axis of the second pipe 211. The direction of the blades 401 is consistent with the flow direction of the water in the second pipe 211. The resistance wire mesh is fixedly connected to the blades (401). By designing the stirring element and the heating element together, the space occupied is reduced, thereby reducing the kinetic energy loss of the water flow. In order to prevent the resistance wire mesh connected to the power supply from being entangled with the power cord when it rotates with the stirring element, the rotating shaft 402 is rotatably connected to the second pipe 211 by using a conductive slip ring.

[0043] A first through hole is formed in the side wall of the barrel section 202, and an air supply device 5 for providing tangential wind along the inner wall of the barrel section 202 is fixedly connected to the first through hole. The air supply device 5 may be a small blower or a small fan, and the fixed connection may be a welding or a threaded connection. The air supply device 5 is fixedly arranged on the outer wall of the barrel section 202, and air flow is blown into the water mist from the first through hole to provide tangential wind for the water mist, thereby increasing the spiral strength of the water mist, further increasing the kinetic energy of the water mist, and increasing the range of the water mist. The air supply device 5 includes a fan 502 and a ventilation duct 501 connected to the air outlet of the fan 502. After the device is stopped, part of the water mist will enter the fan 502 through the ventilation duct 501, which may cause corrosion or short circuit to the fan 502. As a preferred solution, a partition is provided along the cross section of the ventilation duct 501. The partition includes a movable plate 531 and a partition plate 530 having a plurality of second through holes 532 and fixedly connected to the inner wall of the ventilation duct 501. The side of the partition plate 530 is fixedly arranged to fit with the inner wall of the duct 501. The movable plate 531 is provided with a plurality of third through holes 534 and a plurality of protrusions 533 matching the second through holes 532. The movable plate 531 fits with the partition plate 530 and is connected to the partition plate 530 by an elastic member. The elastic member may be a spring, a spring slider member or a rubber rope. When the air supply device 5 is not in operation, The protrusion 533 is inserted into the second through hole 532. When the elastic member is in a contracted state, the movable plate 531 fits with the partition plate 530, the fan 502 and the barrel section 202 are isolated from each other, and the water mist cannot flow back into the fan 502. When the air supply device 5 is running, the movable plate 531 and the partition plate 530 are separated, and the wind blown by the fan 502 flows out from the third through hole 534 through the gap between the protrusion 533 and the second through hole 532 and enters the barrel section 202. In this case, the elastic member is stretched. After the blowing is finished, under the elastic force of the elastic member, the movable plate 531 and the partition plate 530 are re-attached to form a partition effect. In addition, in order to reduce the excessive wind loss when the fan 502 blows the movable plate 531, which affects the use effect of the device, the movable plate 531 is a sheet plastic member, which is made of polypropylene plastic or hard polyvinyl chloride with a thickness of 1mm-0.5mm and the same shape as the partition member.

[0044] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0045] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An urban road dust control device, comprising a support frame (1) and a fog cannon device (2) fixedly connected to the support frame (1), wherein the fog cannon device (2) is connected to a water pump, and is characterized in that: The mist cannon device (2) comprises a cannon tube section (202) and a heating tube section (201) for heating water flow, the heating tube section (201) comprises a first tube member (210) and a second tube member (211), flow channels are provided between the outer wall of the second tube member (211) and the inner wall of the first tube member (210) and inside the second tube member (211), and a heating element (3) is provided inside the second tube member (211).

2. The urban road dust control device according to claim 1 is characterized in that: A stirring member (4) for stirring the water flow is rotatably connected inside the second pipe member (211).

3. The urban road dust control device according to claim 2 is characterized in that: The heating element (3) comprises a protective layer and a resistance wire (301) built into the protective layer and connected to a power source. The resistance wires (301) are in a plurality and are evenly distributed radially along the second tube (211) to form a resistance wire mesh.

4. The urban road dust control device according to claim 3 is characterized in that: The resistance wire meshes are in multiple numbers and are evenly distributed along the axial direction of the second tube (211).

5. The urban road dust control device according to claim 3 is characterized in that: The stirring member (4) comprises blades (401) and a rotating shaft (402) arranged on the axis of the second pipe member (211); the rotating shaft (402) is rotatably connected to the second pipe member (211) via a conductive slip ring; the blades (401) are in a plurality and are evenly distributed around the axis of the second pipe member (211); the direction of the blades (401) is consistent with the flow direction of water in the second pipe member (211); and the resistance wire mesh is fixedly connected to the blades (401).

6. The urban road dust control device according to claim 1, characterized in that: A first through hole is formed on the side wall of the gun barrel section (202), and a wind supply device (5) for providing wind force tangentially along the inner wall of the gun barrel section (202) is fixedly connected to the first through hole.

7. The urban road dust control device according to claim 6, characterized in that: The air supply device comprises a fan (502) and a ventilation duct (501) connected to an air outlet of the fan (502); a partition member is provided in the ventilation duct (501) along the duct cross section; the partition member comprises a movable plate (531) and a partition plate (530) having a plurality of second through holes (532) and fixedly connected to the inner wall of the ventilation duct (501); the movable plate (531) is provided with a plurality of third through holes (534) and a plurality of protrusions (533) matching the second through holes (532); the movable plate (531) fits the partition plate (530) and the movable plate (531) and the partition plate (530) are connected via an elastic member.

8. The urban road dust control device according to claim 7, characterized in that: The movable plate (531) is a sheet-like plastic part.

9. The urban road dust control device according to claim 1, characterized in that: The first pipe member (210) comprises a first pipe section (214), a second pipe section (215) and a third pipe section (216) connected to the gun barrel section (202); the inlet of the first pipe section (214) is connected to a water pump; the inner diameter of the second pipe section (215) is smaller than the inner diameter of the first pipe section (214); the inner diameter at the inlet of the third pipe section (216) is greater than or equal to the inner diameter of the second pipe section (215), and the inner diameter of the third pipe section (216) gradually increases in a direction toward the gun barrel section (202).

Images