Tunnel air dust removal vehicle

Abstract

The utility model discloses a tunnel air dust removal vehicle which comprises a vehicle body and a dust removal device arranged on the vehicle body, and an air inlet pipe and an air outlet pipe are arranged on the dust removal device. The dust removal device is of a three-section structure and is composed of an upper barrel, a middle barrel and a lower conical barrel. A filter element is arranged in the upper cylinder; a partition plate is arranged between the middle cylinder and the upper cylinder, a vent hole is formed in the center of the partition plate, an inner cylinder is arranged at the vent hole, the inner cylinder is nested in the middle cylinder and is coaxially arranged with the middle cylinder, and the middle cylinder is communicated with the upper cylinder through the vent hole in the inner cylinder and the partition plate; a dust discharging opening is formed in the bottom of the lower conical cylinder; and an axial flow fan is arranged between the filter element and the air outlet pipe. The dust removal device has the characteristics of high dust removal speed in a small range, convenience and practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal in tunnels, in particular to a tunnel air dust removal vehicle. Background Art

[0002] In recent years, my country's infrastructure construction has developed rapidly, and the amount of road traffic construction is large. Among them, tunnel construction is difficult, the working environment is harsh, and there are many uncertain factors. In tunnel construction, the construction period is long, the working environment is relatively closed, and dust is not easy to discharge and spread. The discharge of dust in the tunnel is a problem, especially when the drilling and blasting method is used for construction. The amount of dust is more serious, but after the blasting, personnel need to enter as soon as possible to carry out subsequent operations, which poses a threat to the health of the workers. Traditional tunnel construction dust removal relies on ventilation methods, but due to the long ventilation air path, the ventilation resistance along the tunnel is obvious, and it is difficult for clean air to enter the working surface. In addition, the dust removal is slow and the timeliness is poor. It cannot meet the requirements of timely subsequent operations after blasting. Workers have health and safety hazards when working in a dusty environment. Utility Model Content

[0003] The utility model is used to overcome the defects of the prior art and provide a tunnel air dust removal vehicle to solve the problems mentioned in the background technology.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A tunnel air dust removal vehicle comprises a vehicle body and a dust collector arranged thereon, wherein the dust collector is provided with an air inlet pipe and an air outlet pipe; the dust collector is a three-section structure, consisting of an upper cylinder, a middle cylinder and a lower cone cylinder, wherein the upper cylinder, the middle cylinder and the lower cone cylinder are connected in sequence and are arranged coaxially; a filter element is arranged in the upper cylinder; the air inlet pipe is arranged on the middle cylinder, and its air inlet direction is tangent to the arc surface of the inner wall of the middle cylinder; the lower cone cylinder is an inverted cone, and a dust exhaust port is arranged at the bottom of the lower cone cylinder; an axial flow fan is arranged between the filter element and the air outlet pipe.

[0006] The above-mentioned tunnel air dust removal vehicle has a partition between the middle cylinder and the upper cylinder, a vent hole is opened at the center of the partition, an inner cylinder is arranged at the vent hole, the inner cylinder is nested in the middle cylinder, and is arranged coaxially with the middle cylinder. The middle cylinder is connected with the upper cylinder through the vent holes on the inner cylinder and the partition.

[0007] In the above-mentioned tunnel air dust removal vehicle, the partition is in the shape of an inverted cone, and the angle θ between the cone surface of the partition and the horizontal plane is 15-25 degrees.

[0008] The above-mentioned tunnel air dust removal vehicle is provided with a water nozzle on the inner wall of the upper cylinder near the partition, and the water nozzle sprays water toward the center of the partition; a water tank is provided on the vehicle body, and the water nozzle is connected to the water tank through a high-pressure water pump.

[0009] The above-mentioned tunnel air dust removal vehicle has one filter element, which is coaxially arranged in the upper cylinder.

[0010] The above-mentioned tunnel air dust removal vehicle has four filter elements, which are symmetrically arranged along the circumferential direction in the upper cylinder.

[0011] In the above-mentioned tunnel air dust removal vehicle, the air inlet of the air inlet pipe is set as a bell mouth, and the air outlet of the air outlet pipe is set as a bell mouth.

[0012] The above-mentioned tunnel air dust removal vehicle is provided with a push-pull handle and a towing hook on the vehicle body, and the vehicle body can be pushed and pulled manually or towed by a vehicle. Beneficial Effects

[0013] Compared with the prior art, the utility model has the following advantages: the dust collector is set as a three-section structure consisting of an upper cylinder, a middle cylinder and a lower cone cylinder. The airflow enters the dust collector from the middle cylinder and then forms a vortex. Under the action of centrifugal force, the heavier dust particles move around and gradually settle down along the side wall of the lower cone cylinder to the bottom of the lower cone cylinder. The airflow continues to pass through the inner cylinder upward through the partition and enters the upper cylinder. When the air flows from the inner cylinder with a smaller cross-sectional area to the upper cylinder with a larger cross-sectional area, it gradually slows down, which is conducive to the further sedimentation of dust particles on the partition. The partition is set at an angle. When there is a lot of dust, the dust accumulated on the partition can be sprayed and flushed through the water nozzle set on the inner wall of the upper cylinder near the partition. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a partial structural schematic diagram of the utility model;

[0017] The symbols in the figure represent:

[0018] 1. vehicle body, 2. dust collector, 201. air inlet pipe, 202. air outlet pipe, 203. filter element, 204. partition, 205. inner cylinder, 206. axial flow fan, 207. water nozzle. DETAILED DESCRIPTION

[0019] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0020] like Figure 1-2 As shown, the utility model aims at the situation that dust in a relatively closed tunnel is difficult to be discharged, dust removal by ventilation takes a long time, the operation efficiency is low, and the timeliness requirements of the operation cannot be met. The dust removal vehicle solution designed can quickly remove dust in a small area to meet the operation requirements.

[0021] The utility model includes a vehicle body 1 and a dust collector 2 arranged thereon, wherein the dust collector 2 is provided with an air inlet pipe 201 and an air outlet pipe 202; the dust collector 2 is a three-section structure, consisting of an upper cylinder, a middle cylinder, and a lower cone cylinder, wherein the upper cylinder, the middle cylinder and the lower cone cylinder are connected in sequence, and the axes of the three are in a straight line, that is, they are arranged coaxially; a filter element 203 is arranged in the upper cylinder; the air inlet pipe 201 is arranged on the middle cylinder, and its air inlet direction is tangent to the arc surface of the inner wall of the middle cylinder, the lower cone cylinder is an inverted cone, and a dust exhaust port is arranged at the bottom of the lower cone cylinder; an axial flow fan 206 is arranged between the filter element 203 and the air outlet pipe 202.

[0022] A partition 204 is provided between the middle tube and the upper tube, a vent hole is provided at the center of the partition 204, an inner tube 205 is provided at the vent hole, the inner tube 205 is nested in the middle tube and is coaxially arranged with the middle tube, and the middle tube is connected with the upper tube through the vent holes on the inner tube 205 and the partition 204.

[0023] After the dusty air enters the annular space between the middle cylinder and the inner cylinder 205 through the air inlet pipe 201, it rotates and flows downward along the inner wall of the middle cylinder and enters the lower cone cylinder. Due to the centrifugal force, the dust moves in all directions, gradually settles downward along the side wall of the lower cone cylinder and settles at the bottom of the lower cone cylinder. The airflow continues upward through the inner cylinder 205 and passes through the partition 204 to enter the upper cylinder. When the air flows from the inner cylinder 205 with a smaller cross-sectional area to the upper cylinder with a larger cross-sectional area, it gradually slows down, which is conducive to the further settlement of dust particles on the partition 204.

[0024] The vehicle body 1 is provided with a push-pull handle and a towing hook. The vehicle body 1 can be pushed and pulled manually and connected to the on-site power supply for operation, or towed by a towing vehicle, and a generator can be set on the towing vehicle for operation. A dust discharge valve is provided on the dust discharge port at the bottom of the lower cone, and dust in the dust collector can be discharged during the operation interval.

[0025] The partition 204 is in an inverted cone shape, and the angle θ between the cone surface of the partition 204 and the horizontal plane is 15-25 degrees. A water nozzle 207 is provided on the inner wall of the upper cylinder near the partition 204, and the water spray direction of the water nozzle 207 is toward the center of the partition 204; a water tank is provided on the vehicle body 1, and the water nozzle 207 is connected to the water tank through a high-pressure water pump. The partition 204 is set in an inverted cone shape so that the dust falling on it can flow to the lower cone through the inner cylinder 205 under the spraying and flushing action of the water nozzle 207.

[0026] In order to make the airflow entering the dust collector 2 rotate more regularly, the air inlet direction of the air inlet pipe 201 is tangent to the arc surface of the inner wall of the middle cylinder to increase the rotation of the airflow along the inner wall of the dust collector 2.

[0027] The number of the filter element 203 can be one or more. When one filter element is provided, it is coaxially provided in the upper cylinder. When multiple filter elements are provided, such as four, they can be symmetrically provided in the upper cylinder along the circumferential direction.

[0028] To facilitate air intake and air outlet, the air inlet of the air inlet pipe 201 is configured as a bell mouth, and the air outlet of the air outlet pipe 202 is configured as a bell mouth.

Claims

1. A tunnel air dust removal vehicle, characterized in that: The vehicle comprises a vehicle body (1) and a dust collector (2) arranged thereon, wherein the dust collector (2) is provided with an air inlet pipe (201) and an air outlet pipe (202); the dust collector (2) is a three-section structure, consisting of an upper cylinder, a middle cylinder and a lower cone cylinder, wherein the upper cylinder, the middle cylinder and the lower cone cylinder are connected in sequence and are arranged coaxially; a filter element (203) is arranged in the upper cylinder; the air inlet pipe (201) is arranged on the middle cylinder, and its air inlet direction is tangent to the arc surface of the inner wall of the middle cylinder; the lower cone cylinder is an inverted cone, and a dust outlet is arranged at the bottom of the lower cone cylinder; an axial flow fan (206) is arranged between the filter element (203) and the air outlet pipe (202).

2. The tunnel air dust removal vehicle according to claim 1, characterized in that: A partition (204) is provided between the middle tube and the upper tube, a vent hole is provided at the center of the partition (204), an inner tube (205) is provided at the vent hole, the inner tube (205) is nested in the middle tube and is arranged coaxially with the middle tube, and the middle tube is connected to the upper tube through the vent holes on the inner tube (205) and the partition (204).

3. The tunnel air dust removal vehicle according to claim 2, characterized in that: The partition (204) is in the shape of an inverted cone, and the angle θ between the cone surface of the partition (204) and the horizontal plane is 15-25 degrees.

4. The tunnel air dust removal vehicle according to claim 2, characterized in that: A water spray nozzle (207) is arranged on the inner wall of the upper cylinder near the partition (204), and the water spray nozzle (207) sprays water towards the center of the partition (204); a water tank is arranged on the vehicle body (1), and the water spray nozzle (207) is connected to the water tank via a high-pressure water pump.

5. The tunnel air dust removal vehicle according to claim 1, characterized in that: The number of the filter element (203) is one, and the filter element is coaxially arranged in the upper cylinder.

6. The tunnel air dust removal vehicle according to claim 1, characterized in that: The number of the filter elements (203) is four, and they are symmetrically arranged along the circumferential direction in the upper cylinder.

7. The tunnel air dust removal vehicle according to claim 1, characterized in that: The air inlet of the air inlet pipe (201) is configured as a bell mouth, and the air outlet of the air outlet pipe (202) is configured as a bell mouth.

8. The tunnel air dust removal vehicle according to claim 1, characterized in that: The vehicle body (1) is provided with a push-pull handle and a towing hook, and the vehicle body (1) can be pushed or pulled manually or towed by a vehicle.

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