Water curtain dust removal system for coal mine

Abstract

The utility model discloses a water curtain dust removal system for coal mine, including spraying portion, water supply pipe, leaked water collection portion, spraying portion is fixed on the top of roadway, the water supply pipe is fixed on the side wall of roadway, spraying portion includes shunt pipe, spraying pipe, tee joint, nozzle, the nozzle is fixedly connected with tee joint main pipe end, the tee joint main pipe end is connected with the spray pipe, and the spray pipe is connected with the tee joint main pipe end. And the spraying pipes are connected end to end through a three-way main pipe to form a spraying section. The spraying pipes comprise the long spraying pipes and the short spraying pipes, the long spraying pipes and the short spraying pipes on each spraying section are connected in a staggered mode, the spraying pipes of different lengths are adopted for the first sections of the adjacent spraying sections, and all the spraying heads on each spraying section are arranged in a staggered array mode. The leaked water collecting part comprises a self-flowing type sewage collecting groove, a bearing beam, a bearing transverse shaft and a water leaking grating. The system is simple in structural arrangement, can adjust the shape of a water curtain and water mist distribution, can automatically collect and discharge sewage, avoids water accumulation in a roadway, can improve the dust removal efficiency, and is convenient for equipment, materials and personnel to pass.

Description

[Technical Field]

[0002] This utility model relates to a dust removal system for underground roadways in coal mines, specifically a water curtain dust removal system for coal mines. [Background Technology]

[0004] The air in underground coal mine roadways contains a large amount of floating coal dust and rock dust, which can seriously endanger the safety and health of underground workers and the safe production of the mine. Therefore, water curtains for purifying airflow are installed in the intake and return airways, main roadways, and tunneling faces of coal mining faces, which can effectively reduce the concentration of dust in the mine and improve and control the working environment.

[0005] However, in the existing technology, the form of the spray pipe is relatively simple and is often fixed to the top of the roadway. Once installed and fixed, the layout of the spray pipe and the number of nozzles are fixed. It cannot be adjusted in a timely manner according to changes in dust in the roadway, changes in the size and shape of the roadway cross-section, etc. The dust suppression effect of spraying is limited, and most of the sprayed water mist falls on the roadway ground and easily forms water accumulation, making the ground muddy, affecting the passage of personnel and equipment, and polluting the working environment. [Utility Model Content]

[0007] The purpose of this invention is to provide a water curtain dust removal system to solve the problems mentioned in the background art.

[0008] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0009] A water curtain dust removal system for coal mines, characterized in that the system comprises:

[0010] The spraying unit is fixed to the top of the roadway and includes a branch pipe, multiple spray pipe sections, multiple tees, and multiple nozzles. The water supply pipe is fixed to the side wall of the roadway. One end of the water supply pipe is spirally connected to the branch pipe, and the upper end of the branch pipe has a branch hole. One end of the spray pipe is spirally connected to the branch hole, and the other end of the spray pipe is spirally connected to the main end of the tee. The branch end of the tee is connected to a nozzle. The spray pipes are connected end to end through the main tee to form a spraying section. The spray pipe includes long spray hoses and short spray hoses. The long spray hoses and short spray hoses are staggered on each spraying section, and the first section of adjacent spraying sections uses spray hoses of different lengths, so that all the nozzles on each spraying section are arranged in a staggered array.

[0011] A water supply pipe is fixed to the side wall of the tunnel, and one end of the water supply pipe is spirally connected to a branch pipe.

[0012] The water collection section includes a gravity-flow sludge collection trough, a load-bearing beam, a load-bearing horizontal shaft, and a water-leaking grille. The gravity-flow sludge collection trough is a wedge-shaped body, and the load-bearing beam is also a wedge-shaped body. The inclined surface of the load-bearing beam coincides with the inclined surface of the gravity-flow sludge collection trough. The load-bearing horizontal shaft is installed in an array through the trapezoidal side of the load-bearing beam. The water-leaking grille is covered and fixedly connected to the load-bearing beam and the load-bearing horizontal shaft.

[0013] A further improvement of this utility model is that: one end of the diversion pipe is open and the other end is closed; multiple diversion holes are provided on the upper surface of the diversion pipe, so that the diversion pipe can connect to multiple spray sections; the diversion holes are in a blocked state when not in use; the number of diversion holes to be used on the diversion pipe is increased or decreased according to the actual working conditions in the roadway.

[0014] A further improvement of this utility model is that: the number of spray sections connected by the diversion pipe can be increased or decreased according to the actual working conditions; the arrangement shape of the spray sections can be adjusted according to the size and shape of the roadway; the number of nozzles on the spray sections can be increased or decreased according to the actual working conditions; and the spray direction of the nozzles on the spray sections can be changed according to the actual working conditions.

[0015] A further improvement of this utility model is that the spray pipe is a flexible hose, which allows the layout and shape of the spray section to be adjusted according to the shape of the tunnel.

[0016] A further improvement of this utility model is that the gravity-flow sludge collection trough is located below the spray section and extends downwind of the roadway, which facilitates the collection of sewage that drifts downwind with the wind. The gravity-flow sludge collection trough is trapezoidal when viewed from the side, and its width is the same as the width of the roadway.

[0017] A further improvement of this utility model is that: the number of load-bearing beams is two, the two load-bearing beams are arranged parallel to each other at a certain distance in the gravity-flow sludge collection tank, the upper surface of the load-bearing beam has a certain width, the length of the load-bearing beam is the same as the length of the collection tank, the load-bearing beam is trapezoidal when viewed from the side, and the load-bearing beam fits into the trapezoidal gravity-flow sludge collection tank.

[0018] A further improvement of this utility model is that the load-bearing horizontal axis through array is installed on the four trapezoidal sides of the two load-bearing beams.

[0019] A further improvement of this utility model is that the material used for the water-leaking grille is stainless steel, and the water-leaking grille covers the load-bearing beam and the load-bearing horizontal axis, and is fixedly connected to the load-bearing beam and the load-bearing horizontal axis.

[0020] A further improvement of this utility model is that a dust-blocking net is vertically installed at a certain distance on the downwind side of the spray section.

[0021] A further improvement of this utility model is that the nozzle is oriented towards the dust-blocking net to form a dust-removing water curtain.

[0022] Due to the adoption of the above technical solution, the technical progress achieved by this utility model compared with the existing technical solution is as follows:

[0023] 1. The water curtain dust removal system for coal mines provided by this utility model has a spray pipe spirally connected to the diversion pipe. The spray pipe is connected end to end through the main tee pipe. The branch pipe end of the tee pipe is connected to the nozzle to form a spray section. The layout of the spray section on the top of the roadway can be adjusted according to the size and shape of the roadway. The spray section connected to the diversion pipe, the number of nozzles, and the direction of the nozzles can be adjusted according to the change of dust amount to achieve the purpose of efficient dust removal.

[0024] 2. The water curtain dust removal system for coal mines provided by this utility model involves excavating a wedge-shaped self-flowing sludge collection trough in the roadway below the spray section. Two load-bearing beams are installed longitudinally in the self-flowing sludge collection trough, and load-bearing horizontal shafts are installed in an array through the trapezoidal sides of the two load-bearing beams. Water-permeable grids are covered and fixedly connected to the load-bearing beams and load-bearing horizontal shafts. The water mist sprayed from the spray section flows to the self-flowing sludge collection trough under the action of gravity, and concentrates on the deeper end of the self-flowing sludge collection trough, flowing out through the drainage ditch. This makes the ground of the roadway where the water curtain dust removal device is located relatively dry and clean, and the ground will not be muddy, and it is convenient for equipment, materials and personnel to pass through. [Attached Image Description]

[0026] Figure 1 This is a three-dimensional structural diagram of a water curtain dust removal system for coal mines according to an embodiment of the present invention;

[0027] Figure 2 for Figure 1 The diagram shows the structure of the spray section in a water curtain dust removal system used in coal mines.

[0028] Figure 3 for Figure 1 The diagram shows the structure of the diversion pipe in a water curtain dust removal system used in coal mines.

[0029] Figure 4 for Figure 1 A comparison diagram of long and short spray hoses in a water curtain dust removal system used in coal mines;

[0030] Figure 5 for Figure 1 The diagram shows the configuration of the spray section and dust barrier in a water curtain dust removal system used in coal mines.

[0031] Figure 6 for Figure 1 The diagram shows the structure of the roadway and the gravity-flow sludge collection trough in the water curtain dust removal system used in coal mines.

[0032] Figure 7 for Figure 1 The diagram shows the structure of the water collection section in a water curtain dust removal system used in coal mines.

[0033] In the diagram: 1. Sprinkler section; 2. Water collection section; 3. Water supply pipe; 4. Diversion pipe; 5. Sprinkler pipe; 501. Short sprinkler hose; 502. Long sprinkler hose; 6. Tee; 7. Sprinkler head; 8. Diversion hole; 9. Sprinkler section; 10. Dust screen; 11. Outer shell of the tunnel model; 12. Gravity-fed sludge collection trough; 13. Load-bearing beam; 14. Load-bearing horizontal axis; 15. Leakage grille.

Detailed Implementation Methods

[0035] The present invention will be further described in detail below with reference to embodiments:

[0036] like Figures 1-7 As shown, this utility model provides a water curtain dust removal system for coal mines, which includes: a spray section 1, a water collection section 2, and a water supply pipe 3.

[0037] The sprinkler section 1 is installed at the top of the tunnel, the water supply pipe 3 is installed on the side wall of the tunnel, and the branch pipe 4 is fixedly installed parallel to the tunnel on the upper end of the side wall of the tunnel. One end of the branch pipe 4 is open and the other end is closed. The water supply pipe 3 is threaded into the open end of the branch pipe 4. The top surface of the branch pipe 4 has multiple branch holes 8 for spirally connecting the sprinkler pipes 5. The branch holes 8 are spirally connected to the sprinkler pipes 5. The sprinkler pipes 5 are connected end to end through the main pipe of the tee 6. The branch pipe ends of the tee 6 are equipped with nozzles 7, thus forming the sprinkler section 9. Dust screens 10 are vertically installed at certain intervals L in the sprinkler section.

[0038] In this embodiment, when installing the water curtain dust removal system, all pipes are fixed to the inner wall of the tunnel using pipe clamps.

[0039] When using the water curtain dust removal system, water flows into the diversion pipe 4 through the water supply pipe 3. The diversion pipe 4 sends the water into the connected spray pipe 5, which then flows through the nozzle 7 and sprays out to form a dust removal water mist. The water mist adsorbs dust and other particles in the air in the tunnel and falls under the action of gravity, concentrating in the water collection section 2. Another part of the water mist is carried by the wind to the dust screen 10, forming a dust removal water curtain with a better dust collection effect. A large amount of water mist and dust are adsorbed and collected on the dust screen 10 and flow downwards, concentrating in the water collection section 2.

[0040] Preferably, the number of diversion holes 8 to be activated on the diversion pipe 4 is increased or decreased based on the actual working conditions in the roadway. When the roadway is large enough, the amount of dust is large enough, and the dust concentration is high, two or more diversion holes 8 can be activated simultaneously. At this time, the other unactivated diversion holes 8 are in a blocked state, which can form multiple spray sections 9 to improve dust removal efficiency. In addition, the number of nozzles on the spray section can also be increased or decreased according to the actual working conditions, and the spray direction of the nozzles can also be changed according to the actual working conditions, which also improves the dust removal effect and efficiency.

[0041] Preferred, such as Figure 4 As shown, the spray pipe 5 has two structures, long and short. The first section of the spray pipe connected to the first diversion hole on the diversion pipe 4 uses a long spray hose 502, while the first section of the spray pipe connected to the second diversion hole on the diversion pipe 4 uses a short spray hose 501. This allows all the nozzles on the first and second spray sections to be arranged in an alternating array, increasing the overall density of the water curtain and improving the adsorption efficiency of the water curtain for dust.

[0042] Preferably, when installing the water curtain dust removal system, the spray pipe 5 is a flexible hose, which allows the layout and shape of the spray section 9 to be changed arbitrarily. When the tunnel is arched, the spray section 9 can be arranged in an arch shape to fit the top of the tunnel arch; when the tunnel is square, the spray section 9 can be arranged in a straight line to fit the top of the tunnel, effectively increasing the distribution of water mist on the tunnel cross section.

[0043] Preferably, when the water curtain dust removal system is started, the layout and shape of the spray section 9 can be flexibly changed due to changes in airflow and dust movement in the tunnel caused by time, air volume and tunnel deformation, so as to form a water mist distribution across the entire cross section of the tunnel, thereby achieving more efficient dust removal.

[0044] Preferably, when starting the water curtain dust removal system, the direction of any section of the spray section 9 nozzle 7 can be changed so that the nozzle 7 faces the dust net 10, forming a dust removal water curtain with higher dust collection efficiency, which significantly improves the dust removal efficiency.

[0045] The water collection section 2 includes a gravity-flow sludge collection trough 12, a load-bearing beam 13, a load-bearing horizontal axis 14, and a water-leaking grid 15. The gravity-flow sludge collection trough 12 is a wedge-shaped groove dug on the leeward side below the spray section 1 in the roadway. One end of the groove is dug deeper and the other end is dug shallower, so that the entire groove is trapezoidal when viewed from the side. The load-bearing beam 13 is designed to fit the trapezoidal groove in a wedge shape. There are two load-bearing beams 13, which are placed in the gravity-flow sludge collection trough 12 at a certain distance from each other on the left and right, so that the inclined surface of the load-bearing beam 13 coincides with the inclined surface of the gravity-flow sludge collection trough 12. It is used to support the weight of passing equipment and materials. The upper surface of the load-bearing beam 13 has a certain length and width so that it can fit the length of the gravity-flow sludge collection trough 12. The load-bearing horizontal axis 14 is installed horizontally through the array on the left and right load-bearing beams 13 to support the weight of the workers passing through. The water-leaking grille 15 is made of stainless steel and is fixedly connected to the load-bearing beams 13 and the load-bearing horizontal axis 14, so that the weight of the workers passing through can be evenly distributed on the load-bearing horizontal axis 14, and water mist and droplets can be leaked down and collected in the gravity-flow sludge collection tank 12.

[0046] In this embodiment, when using the water curtain dust removal system, the spray section 9 sprays water mist through the nozzles 7 to form a water curtain. Dust is adsorbed by the water mist and falls towards the drainage grille 15 under gravity. The drainage grille 15 allows the wastewater carrying the dust to pass through and drips into the gravity-flow sludge collection tank 12. Under the action of the airflow in the tunnel, most of the water mist sprayed by the spray section 9 drifts towards the dust barrier 10, forming a dust removal water curtain, adsorbing a large amount of dust carried by the airflow, and falling to the tunnel floor. The wastewater then flows through the drainage grille 15 into the gravity-flow sludge collection tank 12. The gravity-flow sludge collection tank 12 has a trapezoidal design. The wastewater flowing into the gravity-flow sludge collection tank 12 flows towards the deeper drainage ditch under gravity, and the wastewater in the drainage ditch flows into the longitudinal drainage ditch for discharge. When equipment or materials pass through, they pass through the left and right load-bearing beams 13 respectively. When workers pass through, they can step on the drainage grille 15 to pass through. The drainage grille 15 distributes the workers' weight evenly on the load-bearing horizontal axis 14, and the load-bearing horizontal axis 14 concentrates the weight on the left and right load-bearing beams 13.

Claims

1. A water curtain dust suppression system for use in coal mines characterised in that, The system comprises: The spraying part (1) is fixed to the roof of the tunnel, and comprises a shunt pipe (4), a plurality of spraying pipes (5), a plurality of three-way pipes (6), and a plurality of spray heads (7). The upper end surface of the shunt pipe (4) is provided with a shunt hole (8), one end of the spraying pipe (5) is spirally connected to the shunt hole (8), the other end of the spraying pipe (5) is spirally connected to the main pipe end of the three-way pipe (6), the branch pipe end of the three-way pipe (6) is connected with the spray head (7), the spraying pipes (5) are connected head to tail through the main pipe ends of the three-way pipes (6) to form spraying sections (9), and the spraying pipe (5) comprises long spraying hoses (502) and short spraying hoses (501). The long spraying hoses (502) and the short spraying hoses (501) are alternately connected on each spraying section, and the first section of adjacent spraying sections adopts spraying pipes (5) of different lengths, so that all the spray heads (7) on each spraying section are arranged in an interlaced array. The water supply pipe (3) is fixed to the sidewall of the tunnel, and one end of the water supply pipe (3) is spirally connected to the shunt pipe (4). The water leakage water collecting part (2) comprises a self-flowing sewage collecting tank (12), a load-bearing beam (13), a load-bearing horizontal shaft (14), and a water leakage grille (15). The self-flowing sewage collecting tank (12) is a wedge body, the load-bearing beam (13) is a wedge body, the inclined surface of the load-bearing beam (13) coincides with the inclined surface of the self-flowing sewage collecting tank (12), the trapezoidal side surface of the load-bearing beam (13) penetrates and is installed with the load-bearing horizontal shaft (14), and the water leakage grille (15) is fixedly connected to the load-bearing beam (13) and the load-bearing horizontal shaft (14).

2. A water curtain dust suppression system for use in a coal mine as claimed in claim 1 wherein, One end of the shunt pipe (4) is in an open state, and the other end is in a closed state. A plurality of shunt holes (8) are formed in the upper end surface of the shunt pipe (4), so that the shunt pipe can be connected with a plurality of spraying sections (9). When not in use, the shunt holes (8) are in a blocked state, and the number of shunt holes (8) to be used on the shunt pipe (4) is increased or decreased according to the actual working conditions in the tunnel.

3. A water curtain dust suppression system for use in a coal mine as claimed in claim 1 wherein, The number of spraying sections (9) connected with the shunt pipe (4) can be increased or decreased according to the actual working conditions. The spraying sections (9) can be adjusted in arrangement shape according to the size and shape of the tunnel. The number of spray heads (7) on the spraying sections (9) can be increased or decreased according to the actual working conditions. The water spraying direction of the spray heads (7) on the spraying sections (9) can be adjusted according to the actual working conditions.

4. A water curtain dust suppression system for use in a coal mine as claimed in claim 1 wherein, The spraying pipe (5) is a hose, so that the layout and shape of the spraying section (9) can be adjusted according to the shape of the tunnel.

5. A water curtain dust suppression system for use in a coal mine as claimed in claim 1 wherein, The self-flowing sewage collecting tank (12) is arranged below the spraying part (1) and extends to the downwind side of the tunnel, so as to collect sewage flowing to the downwind side with the wind. The self-flowing sewage collecting tank (12) is trapezoidal when viewed from the side, and the width of the self-flowing sewage collecting tank (12) is equal to the width of the tunnel.

6. A water curtain dust suppression system for use in a coal mine as claimed in claim 1 wherein, The quantity of the load-bearing beams (13) is two, the two load-bearing beams (13) are arranged in parallel at a certain distance in the self-flowing sewage collecting tank (12), the upper surface of the load-bearing beam (13) has a certain width, the length of the load-bearing beam (13) is consistent with the length of the water collecting tank, and the load-bearing beam (13) is trapezoidal when viewed from the side.

7. A water curtain dust suppression system for use in a coal mine as claimed in claim 1 wherein, The load-bearing cross shaft (14) is arranged through the four trapezoidal sides of the two load-bearing beams (13).

8. A water curtain dust suppression system for use in a coal mine as claimed in claim 1 wherein, The water leakage grille (15) is made of stainless steel, the water leakage grille (15) covers the load-bearing beam (13) and the load-bearing cross shaft (14), and the water leakage grille (15) is fixedly connected to the load-bearing beam (13) and the load-bearing cross shaft (14).

9. A water curtain dust suppression system for use in a coal mine as claimed in claim 1 wherein, The dust screen (10) is vertically arranged at a certain distance on the lower wind side of the spraying section (9).

10. A water curtain dust suppression system for use in a coal mine as claimed in claim 9 wherein, The direction of the spray head (7) is opposite to that of the dust screen (10), so that a dust removal water curtain is formed.

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