Multi-angle automatic fixed-point dust falling device

Abstract

The utility model relates to tunnel engineering technical field, concretely provides a kind of multi-angle automatic fixed-point dust-settling device, including water supply slide rail, water pipe framework, monitoring equipment component and controller, the water supply slide rail includes guide rail, gyro wheel group and water delivery pipe, the guide rail is installed on tunnel top wall, the water delivery pipe is located inside the guide rail along the length direction of the guide rail, the gyro wheel group is adapted to be installed in the guide rail, the water pipe framework includes vertical pipe, horizontal pipe and two inclined pipes, the upper end of the vertical pipe is connected to the water delivery pipe, the guide rail is opened with the through slot for the vertical pipe to pass through along the axial direction the lower end of the vertical pipe is connected to the horizontal pipe, two inclined pipes are connected to the both ends of the horizontal pipe respectively, the inclined pipe is telescopic pipe, water mist spray head is all equipped on the inclined pipe and the horizontal pipe. The utility model solves the technical problem that the dust-settling of prior art setting affects the normal passage of construction vehicle or construction equipment in tunnel.

Description

Technical Field

[0001] This utility model relates to the field of tunnel engineering technology, specifically to a multi-angle automatic fixed-point dust suppression device. Background Technology

[0002] The main construction method for mountain tunnel excavation is drill and blasting. However, the drilling and blasting dust and harmful gases generated during the process seriously pollute the construction environment. Long-term inhalation of fine dust by workers entering the tunnel can lead to pulmonary fibrosis, which in turn causes breathing difficulties and hypoxia. Existing tunnel dust suppression devices are large in size and occupy a large cross-sectional area of ​​the tunnel, thus affecting the normal passage of construction vehicles or equipment inside the tunnel and greatly impacting the efficiency of normal tunnel construction. Utility Model Content

[0003] The purpose of this utility model is to provide a multi-angle automatic fixed-point dust suppression device to solve the technical problem that existing dust suppression devices affect the normal passage of construction vehicles or equipment in tunnels. The specific technical solution is as follows:

[0004] This utility model provides a multi-angle automatic fixed-point dust suppression device, including a water supply slide rail, a water pipe frame, a monitoring equipment assembly, and a controller. The water supply slide rail includes a guide rail, a roller assembly, and a water supply pipe. The guide rail is installed on the tunnel roof wall, and the water supply pipe is located inside the guide rail along its length. The roller assembly is adapted to be installed inside the guide rail. The water pipe frame includes a vertical pipe, a horizontal pipe, and two inclined pipes. The upper end of the vertical pipe is connected to the water supply pipe. The guide rail has an axially oriented groove for the vertical pipe to pass through, and the width of the groove is smaller than the diameter of the water supply pipe. The lower end of the vertical pipe is connected to the horizontal pipe, and the two inclined pipes are respectively connected to the two ends of the horizontal pipe. The inclined pipes are telescopic pipes. Water mist nozzles are provided on both the inclined pipes and the horizontal pipe. The controller and the monitoring equipment are installed on the vertical pipe, and the controller is connected to the roller assembly, the water mist nozzles, and the monitoring equipment assembly.

[0005] A further improvement of this utility model's multi-angle automatic fixed-point dust suppression device is that the inclined tube is connected to the horizontal tube via a flexible pipe joint.

[0006] A further improvement of this utility model of multi-angle automatic fixed-point dust suppression device is that the roller group includes at least one set of rollers and a drive motor, the drive motor drives at least one set of rollers to rotate, and the drive motor is connected to the controller.

[0007] A further improvement of this utility model's multi-angle automatic fixed-point dust suppression device is that the monitoring equipment component includes a dust detector and a four-in-one gas monitor, both of which are connected to the controller.

[0008] A further improvement of this utility model of multi-angle automatic fixed-point dust suppression device is that the included angle between the inclined tube and the horizontal tube is between 135° and 145°.

[0009] A further improvement of this utility model's multi-angle automatic fixed-point dust suppression device is that the number of water mist nozzles is multiple, and the multiple water mist nozzles are arranged axially at intervals on the inclined pipe and the horizontal pipe.

[0010] The application of the technical solution of this utility model has the following beneficial effects:

[0011] This utility model relates to a multi-angle automatic fixed-point dust suppression device. By shortening the length of a retractable inclined tube, it reduces the cross-sectional area of ​​the tunnel, solving the technical problem in existing dust suppression systems that hinder the normal passage of construction vehicles or equipment within the tunnel. The device advances continuously along a water-supply slide rail as the tunnel is excavated. When the monitoring equipment detects that the air quality exceeds a preset value, it promptly sprays water mist to suppress dust, effectively reducing the concentration of harmful gases such as drilling and blasting dust and carbon monoxide within the tunnel, improving the air quality of the tunnel construction environment, and effectively ensuring the health and safety of workers.

[0012] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0013] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0014] Figure 1 This is a schematic diagram of the structure of the multi-angle automatic fixed-point dust suppression device of this utility model;

[0015] Figure 2 This is a schematic diagram of the water supply slide rail structure of the multi-angle automatic fixed-point dust suppression device of this utility model.

[0016] The components include: 1. Water pipe frame; 2. Dust detector; 3. Four-in-one gas monitor; 4. Controller; and 5. Water supply slide rail. Detailed Implementation

[0017] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0018] See Figure 1 and Figure 2A multi-angle automatic fixed-point dust suppression device includes a water supply slide rail 5, a water pipe frame 1, a monitoring equipment assembly, and a controller 4. The water supply slide rail 5 includes a guide rail, a roller assembly, and a water supply pipe. The guide rail is installed on the tunnel roof. The water supply pipe is located inside the guide rail along its length. The roller assembly is adapted to be installed inside the guide rail. The water pipe frame 1 includes a vertical pipe, a horizontal pipe, and two inclined pipes. The upper end of the vertical pipe is connected to the water supply pipe. The guide rail has an axial groove for the vertical pipe to pass through. The width of the groove is smaller than the diameter of the water supply pipe. The lower end of the vertical pipe is connected to the horizontal pipe. The two inclined pipes are respectively connected to the two ends of the horizontal pipe. The inclined pipes are telescopic pipes. Water mist nozzles are provided on both the inclined pipes and the horizontal pipe. The controller 4 and the monitoring equipment are installed on the vertical pipe. The controller 4 is connected to the roller assembly, the water mist nozzles, and the monitoring equipment assembly.

[0019] Specifically, the telescopic pipe has a mother-and-child rod structure, with the mother rod sleeved on the outer circumference of the child rod. The significant friction between the mother and child rods ensures the inclined pipe remains stable at the required length. Each child rod is equipped with a water mist nozzle, and the diameter of the child rod after the nozzles are installed is still smaller than the inner diameter of the mother rod. In this embodiment, the fully extended length of the inclined pipe is 5m, and the length of the horizontal pipe is 3.6m. The water supply pipe can be a telescopic pipe or a corrugated pipe to meet the maximum length requirement. The water supply pipe can be selectively connected to a water pipe inside the tunnel via a pipe joint, depending on the travel distance. An electric valve is installed on the vertical pipe, and the controller 4 is connected to and controls this electric valve to control the on / off state of the dust suppression spray.

[0020] Preferably, the inclined tube is connected to the horizontal tube via a flexible pipe joint. This flexible pipe joint allows the inclined tube to rotate at multiple angles, thereby meeting various spraying requirements.

[0021] Preferably, the roller assembly includes at least one set of rollers and a drive motor, which drives the at least one set of rollers to rotate. The drive motor is connected to the controller 4. One set of rollers includes two rollers connected to a rotating shaft. The two rollers are rotatably connected to both ends of the rotating shaft. The drive motor and the vertical tube are mounted on the rotating shaft.

[0022] Preferably, the monitoring equipment component includes a dust detector 2 and a four-in-one gas detector 3, both of which are connected to the controller 4.

[0023] The main factors affecting the efficiency of atomization dust suppression include dust concentration, concentration of harmful gases, relative velocity and relative particle size between droplets and dust particles, and the effective area of ​​droplets. The expression for the amount of droplets collected per unit distance and unit time is shown in Equation 1):

[0024] δ M =f(v,η) g,C,A,q,S,V) / V 1);

[0025] Where: δ M η represents the dustfall rate per unit length per unit time, in g·m / t; f is the functional relationship; v is the relative velocity between the droplets and the dust, in m / s; η g C represents the collection efficiency of a single droplet; C represents the dust concentration, in g / m³. 3 A represents the cross-sectional area of ​​the capture zone, in meters. 2 q represents the volumetric water content, in cubic meters (m³). 3 / m 3 S represents the droplet cross-sectional area, in meters. 2 V represents the droplet volume, in cubic meters (m³). 3 .

[0026] The collection efficiency η of a single droplet g The expression is shown in Equation 2):

[0027]

[0028] Where: Stokes number s t It can be calculated as d p ρ represents the particle size of the dust particles, in meters (m). p Dust density, unit: kg / m³ 3 μ g D is the gas density, with units of Pa·s. c The droplet diameter is expressed in meters (m).

[0029] The calculation principle expression for the on-site environment (dust and harmful gas concentration) classification index is shown in Equation 3):

[0030]

[0031] In the formula: a is the volume content, b is the gas content; c is the noise level in decibels; T is the ambient temperature; SiO2 is sulfur dioxide; CO is carbon monoxide; CO2 is carbon dioxide; NO2 is nitrogen dioxide; O2 is oxygen.

[0032] Based on the actual needs of the site, the above-mentioned grading indicators are divided into several levels. When the concentration of harmful gases in the air is greater than the level that needs to be reduced, the controller 4 issues a dust reduction command to make the water mist nozzles reduce dust.

[0033] Specifically, the angle between the inclined tube and the horizontal tube is between 135° and 145°, preferably 140°.

[0034] Preferably, there are multiple water mist nozzles, which are arranged axially at intervals on the inclined pipe and the horizontal pipe. In this embodiment, four water mist nozzles are provided on the inclined pipe and three water mist nozzles are provided on the horizontal pipe.

[0035] This utility model relates to a multi-angle automatic fixed-point dust suppression device. By shortening the length of a retractable inclined tube, it reduces the cross-sectional area of ​​the tunnel, solving the technical problem in existing dust suppression systems that hinder the normal passage of construction vehicles or equipment within the tunnel. The device advances continuously along the water supply slide rail 5 as the tunnel is excavated. When the monitoring equipment detects that the air quality exceeds a preset value, it promptly sprays water mist to suppress dust, effectively reducing the concentration of harmful gases such as drilling and blasting dust and carbon monoxide within the tunnel, improving the air quality of the tunnel construction environment, and effectively ensuring the health and safety of workers.

[0036] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multi-angle automatic fixed-point dust-settling device, characterized in that, The system includes a water supply slide rail (5), a water pipe frame (1), a monitoring equipment assembly, and a controller (4). The water supply slide rail (5) includes a guide rail, a roller assembly, and a water supply pipe. The guide rail is installed on the tunnel roof. The water supply pipe is located inside the guide rail along its length. The roller assembly is adapted to be installed inside the guide rail. The water pipe frame (1) includes a vertical pipe, a horizontal pipe, and two inclined pipes. The upper end of the vertical pipe is connected to the water supply pipe. The guide rail has an axial groove for the vertical pipe to pass through. The width of the groove is smaller than the diameter of the water supply pipe. The lower end of the vertical pipe is connected to the horizontal pipe. The two inclined pipes are respectively connected to the two ends of the horizontal pipe. The inclined pipes are telescopic pipes. Water mist nozzles are provided on both the inclined pipes and the horizontal pipe. The controller (4) and the monitoring equipment are installed on the vertical pipe. The controller (4) is connected to the roller assembly, the water mist nozzles, and the monitoring equipment assembly.

2. The multi-angle automatic spot dust-settling device according to claim 1, characterized in that, The inclined tube is connected to the horizontal tube via a flexible pipe joint.

3. The multi-angle automatic spot dust-settling device according to claim 1, characterized in that, The roller assembly includes at least one set of rollers and a drive motor, the drive motor drives at least one set of rollers to rotate, and the drive motor is connected to the controller (4).

4. The multi-angle automatic spot dust-settling device according to claim 1, characterized in that, The monitoring equipment components include a dust detector (2) and a four-in-one gas monitor (3), both of which are connected to the controller (4).

5. The multi-angle automatic spot dust-settling device according to claim 1, characterized in that, The angle between the inclined tube and the horizontal tube is between 135° and 145°.

6. The multi-angle automatic spot dust-settling device according to claim 1, characterized in that, The number of water mist nozzles is multiple, and the multiple water mist nozzles are arranged axially at intervals on the inclined pipe and the horizontal pipe.

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