Foam fire extinguishing spraying device for fully mechanized coal mining face of coal mine

Abstract

The utility model discloses a foam fire extinguishing jet device for a fully mechanized coal mining face of a coal mine, which comprises a material conveying pipe and a material mixing device, the material conveying pipe is used for conveying a mixture of foam and water, the bottom end of the material conveying pipe is symmetrically and fixedly provided with mounting columns, the mounting columns are fixedly arranged on a hydraulic support, and the material mixing device is arranged on the hydraulic support. A branch pipe is fixedly installed in the middle of the conveying pipe, foam liquid and pressure water are mixed through the mixing device, finally, mixed liquid with a certain proportion is obtained, when the mixed liquid with certain pressure flows to the spray head through the conveying pipe, a certain amount of air can be sucked due to the performance of the spray head, the foam mixed liquid is foamed, and the foam is sprayed out. Accordingly, synchronous water body fire extinguishing and foam fire extinguishing are conducted on the fully mechanized coal mining face of the coal mine, the fire extinguishing efficiency is improved, the fire extinguishing range of a coal seam area can be widened by changing the horizontal discharging angle and the vertical spraying angle of the mixture of the foam liquid and the high-speed water flow, and then the fire extinguishing effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of coal mining, specifically is a foam fire extinguishing injection device for fully mechanized coal mining face. BACKGROUND

[0002] As one of the main ways of mine exploitation, the fully mechanized coal mining face is divided into three parts: main roadway, auxiliary roadway and cutting roadway. The cutting roadway is the coal mining site where coal mining machines, hydraulic supports and bendable scraper conveyors are installed. It is the area for mining coal. The movable hydraulic supports are composed of hydraulic rods installed on each hydraulic support and other components such as support plates. The hydraulic supports can be moved individually.

[0003] During the coal mining process in the cutting roadway, relative cutting operations occur between the coal mining machine and the coal body. When the coal seam contains combustible gas, the combustible gas may catch fire, causing the fully mechanized coal mining face to catch fire. Therefore, fire extinguishing operations need to be performed on the fully mechanized coal mining face. In the prior art, when extinguishing fires on the fully mechanized coal mining face, a water pipe installed on the hydraulic support is used to spray water on the fire location to extinguish the fire. Sometimes, the fire cannot be effectively extinguished by simply spraying water, and sometimes a foam fire extinguisher needs to be used manually to extinguish the fire. The fire extinguishing efficiency is low. In addition, during the water spraying process, the spray angle of the pipe for conveying the fire extinguishing liquid is fixed, which cannot extinguish fires in a large area of coal seam. The fire extinguishing effect is poor. SUMMARY

[0004] The utility model aims to provide a foam fire extinguishing injection device for fully mechanized coal mining face to solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a foam fire extinguishing injection device for fully mechanized coal mining face, comprising a material conveying pipe and a mixing device. The material conveying pipe is used to convey the mixture of foam and water. The bottom end of the material conveying pipe is symmetrically fixedly installed with a mounting column. The mounting column is fixedly installed on the hydraulic support. The middle part of the material conveying pipe is fixedly installed with a branch pipe. The top part of the branch pipe is fixedly installed with a discharging spring pipe. The end part of the discharging spring pipe is fixedly installed with a spray head. The end part of the spray head is rotatable and inclined. The mixing device is used to mix and convey the mixture of foam liquid and water.

[0006] As a further improvement of the technical scheme, the material conveying pipe comprises a fixed pipe and a material conveying spring pipe. The mounting column is fixedly installed on the fixed pipe. The two ends of the fixed pipe are both installed with a material conveying spring pipe.

[0007] As a further preferred aspect of the present technical solution, the outer side of the fixed pipe is provided with a fixed plate, both ends of the fixed plate are provided with a clamp, the clamp is installed on the outer side of the fixed pipe, the bottom end of the fixed plate is fixedly provided with a motor, the output end of the motor is fixedly provided with a rotating disc through the fixed plate, the middle part of the rotating disc is fixedly provided with a vertical column, the top of the vertical column is fixedly provided with a first fixing ring, the discharge spring pipe passes through the first fixing ring and is fixed in the middle part of the first fixing ring.

[0008] As a further preferred aspect of the present technical solution, the end of the discharge spring pipe is fixedly provided with a second fixing ring, and a hydraulic rod is rotatably installed between the outer side of the second fixing ring and the upper surface of the rotating disc.

[0009] As a further preferred aspect of the present technical solution, the mixing device comprises a water storage tank, a water outlet pipe, a water pump, a foam liquid storage tank and a mixing chamber, the water outlet end of the water storage tank is fixedly provided with a water outlet pipe, the water outlet pipe is provided with a water pump, the discharge end of the foam liquid storage tank is communicatively arranged with the water outlet pipe, the end of the water outlet pipe away from the water storage tank is fixedly provided with a mixing chamber, and the discharge end of the mixing chamber is communicatively arranged with the feeding pipe.

[0010] As a further preferred aspect of the present technical solution, the mixing chamber is provided with an air compressor for providing power to the mixture of foam and water in the mixing chamber.

[0011] The utility model provides a kind of foam fire extinguishing injection device for coal mine fully mechanized working face, with following

[0012] Beneficial effects:

[0013] (1) the utility model discloses a little water in water storage tank is entered mixing chamber with high flow rate through water outlet pipe by water pump, and is sprayed from the nozzle on feeding pipe, due to the diffusion effect of transverse movement of jet particle, vacuum (negative pressure) is formed in the chamber of proportional mixer, then the foam liquid in foam liquid storage tank enters mixing chamber under the action of atmospheric pressure through water outlet pipe, and mixes with pressure water, finally reaches the mixing liquid of certain proportion, simultaneously, air compressor provides power for foam liquid and high-speed water flow in mixing chamber, when the mixing liquid with certain pressure flows to nozzle through feeding pipe, because the performance of nozzle can suck a certain amount of air, foam mixing liquid is foamed, to reach the synchronous water body fire extinguishing and foam fire extinguishing of coal mine fully mechanized working face, improve fire extinguishing efficiency.

[0014] (2) the utility model discloses rotating disc is driven to rotate by motor, and the connection of vertical column and first fixing ring can drive discharge spring pipe to rotate, can adjust the horizontal discharge angle of the mixture of foam liquid and high-speed water flow, while, the vertical spraying angle of discharge spring pipe can be changed by the operation of hydraulic rod, can improve the fire extinguishing range of coal seam area, to improve fire extinguishing effect.BRIEF DESCRIPTION OF DRAWINGS BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the whole structure schematic diagram of the material conveying pipe of the utility model;

[0016] Figure 2 It is the local structure schematic diagram of the material conveying pipe of the utility model;

[0017] Figure 3 It is the local explosion structure schematic diagram of the material conveying pipe of the utility model;

[0018] Figure 4 It is the flow chart of the mixing device of the utility model;

[0019] In the drawing: 1, material conveying pipe; 2, mounting column; 3, branch pipe; 4, discharge spring pipe; 5, spray head; 6, fixed pipe; 7, material conveying spring pipe; 8, fixed plate; 9, clamp; 10, motor; 11, rotary disc; 12, stand column; 13, first fixed ring; 14, second fixed ring; 15, hydraulic rod; 16, mixing device; 17, water storage tank; 18, water outlet pipe; 19, water pump; 20, foam liquid storage tank; 21, mixing chamber; 22, air compressor. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0021] The utility model provides technical scheme: as Figures 1 to 4 As shown in the drawing, in the embodiment, a foam fire extinguishing spraying device for fully mechanized coal mining face, including material conveying pipe 1 and mixing device 16, the material conveying pipe 1 is used to transport the mixture of foam and water body, the bottom end of the material conveying pipe 1 is fixedly installed with mounting column 2, the mounting column 2 is fixedly installed on hydraulic support by bolt, the middle part of the material conveying pipe 1 is fixedly installed with branch pipe 3, the top of the branch pipe 3 is fixedly installed with discharge spring pipe 4 by flange plate, the end of the discharge spring pipe 4 is fixedly installed with spray head 5, the end of the spray head 5 can rotate and be inclined, the mixing device 16 is used to mix and transport the mixture of foam liquid and water body, the foam liquid is mixed with pressure water by mixing device 16, and finally reaches the mixing liquid of certain proportion, when the mixing liquid with certain pressure flows to spray head 5 through material conveying pipe 1, because the performance of spray head 5 can suck in a certain amount of air, makes the foam mixing liquid foam, thereby reaches the synchronous water body fire extinguishing and foam fire extinguishing to fully mechanized coal mining face, when carrying out fire extinguishing, can drive discharge spring pipe 4 to rotate, adjusts the discharge horizontal angle of the mixture of foam liquid and high-speed water flow, simultaneously, can change the spray angle of discharge spring pipe 4, can spray the vertical angle of the mixture of foam liquid and high-speed water flow, improves the fire extinguishing range to coal seam area, improves fire extinguishing effect.

[0022] As Figures 1 to 4 shown, the feeding pipe 1 comprises a fixed pipe 6 and a feeding spring pipe 7, the mounting column 2 is fixedly installed on the fixed pipe 6, and the feeding spring pipe 7 is fixedly installed on both ends of the fixed pipe 6 through flanges, and the feeding spring pipe 7 is used for connecting the fixed pipes 6 on the adjacent two hydraulic supports.

[0023] When moving a single hydraulic support, the fixed pipes 6 on the adjacent two hydraulic supports can be connected at all times through the feeding spring pipe 7.

[0024] As Figures 1 to 4 shown, the outer side of the fixed pipe 6 is provided with a fixed plate 8, the both ends of the fixed plate 8 are provided with a clamp 9, the clamp 9 is fixedly installed on the outer side of the fixed pipe 6 through bolts, the bottom end of the fixed plate 8 is fixedly provided with a motor 10, the output end of the motor 10 is fixedly provided with a rotating disc 11 through the fixed plate 8, the middle part of the rotating disc 11 is fixedly provided with a vertical column 12, the top of the vertical column 12 is fixedly provided with a first fixing ring 13, and the feeding spring pipe 4 passes through the first fixing ring 13 and is fixed in the middle part of the first fixing ring 13.

[0025] The rotating disc 11 is driven to rotate by the motor 10, and the connection of the feeding spring pipe 4 through the vertical column 12 and the first fixing ring 13 can drive the feeding spring pipe 4 to rotate, so as to adjust the horizontal angle of the mixture of the foam liquid and the high-speed water flow.

[0026] As Figures 1 to 4 shown, the end of the feeding spring pipe 4 is fixedly provided with a second fixing ring 14, and the outer side of the second fixing ring 14 is rotatably installed with a hydraulic rod 15 through an axle pin between the upper surface of the rotating disc 11.

[0027] The vertical angle of the feeding spring pipe 4 can be changed through the operation of the hydraulic rod 15.

[0028] As Figures 1 to 4 shown, the mixing device 16 comprises a water storage tank 17, a water outlet pipe 18, a water pump 19, a foam liquid storage tank 20 and a mixing chamber 21, the water outlet pipe 18 is fixedly installed on the water outlet end of the water storage tank 17, a first control valve for controlling the flow and cutting off of water is installed on the water outlet pipe 18, the water pump 19 is communicatively installed on the water outlet pipe 18, a second control valve is installed on the pipeline of the discharge end of the foam liquid storage tank 20, the discharge end of the foam liquid storage tank 20 is communicatively arranged with the water outlet pipe 18, the mixing chamber 21 is fixedly installed on the end of the water outlet pipe 18 away from the water storage tank 17, and the discharge end of the mixing chamber 21 is communicatively arranged with the feeding pipe 1.

[0029] A small amount of water in the water storage tank 17 is pumped by the water pump 19 into the mixing chamber 21 through the water outlet pipe 18 at a high flow rate, and is sprayed from the spray head 5 on the material conveying pipe 1.

[0030] As shown in Figures 1 to 4 The mixing chamber 21 is provided with an air compressor 22 for providing power to the mixture of foam and water in the mixing chamber 21.

[0031] The air compressor 22 provides power to the mixture of foam and high-speed water flow in the mixing chamber 21.

[0032] The utility model provides a kind of foam fire extinguishing injection device for coal mine fully mechanized working face, specific working principle as follows:

[0033] When the device is used, a small amount of water in the water storage tank 17 is pumped by the water pump 19 into the mixing chamber 21 through the water outlet pipe 18 at a high flow rate, and is sprayed from the spray head 5 on the material conveying pipe 1. Due to the diffusion effect of the lateral movement of the jet flow particles, a vacuum (negative pressure) is formed in the mixing chamber. Therefore, the foam in the foam storage tank 20 enters the mixing chamber 21 through the water outlet pipe 18 under the action of atmospheric pressure, and mixes with the pressurized water. Finally, a mixture with a certain proportion is obtained. At the same time, the air compressor 22 provides power to the mixture of foam and high-speed water flow in the mixing chamber 21. When the mixture with a certain pressure flows to the spray head 5 through the material conveying pipe 1, a certain amount of air is sucked into the spray head 5 due to its performance, causing the foam mixture to foam. Thus, simultaneous water extinguishing and foam extinguishing of the coal mine fully mechanized working face are achieved.

[0034] When extinguishing fire, the motor 10 drives the rotating disc 11 to rotate. The connection of the vertical column 12 and the first fixed ring 13 to the discharge spring pipe 4 drives the discharge spring pipe 4 to rotate, so that the discharge horizontal angle of the mixture of foam and high-speed water flow can be adjusted. At the same time, the operation of the hydraulic rod 15 can change the discharge vertical angle of the discharge spring pipe 4.

[0035] Although embodiments of the utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the utility model. The scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A foam fire extinguishing spray device for fully mechanized coal mining faces, characterized in that: The utility model provides a kind of foam liquid and water body mixing device, including feed pipe (1) and mixing device (16), the feed pipe (1) is used to transport the mixture of foam and water body, the bottom end of the feed pipe (1) is symmetrically fixedly installed with mounting column (2), the mounting column (2) is fixedly installed on hydraulic support, the middle part of the feed pipe (1) is fixedly installed with branch pipe (3), the top of the branch pipe (3) is fixedly installed with discharge spring pipe (4), the end of the discharge spring pipe (4) is fixedly installed with spray head (5), the end of the spray head (5) is rotatable and inclined, and the mixing device (16) is used to mix and transport the mixture of foam liquid and water body.

2. The foam fire extinguishing spraying device for fully mechanized coal mining face according to claim 1, characterized in that: The feed pipe (1) includes fixed pipe (6) and feed spring pipe (7), the mounting column (2) is fixedly installed on the fixed pipe (6), and the fixed pipe (6) is provided with the feed spring pipe (7) at both ends.

3. The foam fire extinguishing spraying device for fully mechanized coal mining face according to claim 2, characterized in that: The outer side of the fixed pipe (6) is provided with a fixed plate (8), the both ends of the fixed plate (8) are provided with a clamp (9), the clamp (9) is installed on the outer side of the fixed pipe (6), the bottom end of the fixed plate (8) is fixedly installed with a motor (10), the output end of the motor (10) is fixedly installed with a rotating disc (11) through the fixed plate (8), the middle part of the rotating disc (11) is fixedly installed with a vertical column (12), the top of the vertical column (12) is fixedly installed with a first fixed ring (13), the discharge spring pipe (4) passes through the first fixed ring (13) and is fixed in the middle part of the first fixed ring (13).

4. The foam fire extinguishing spraying device for fully mechanized coal mining face according to claim 3, characterized in that: The end of the discharge spring pipe (4) is fixedly installed with a second fixed ring (14), and the hydraulic rod (15) is rotatably installed between the outer side of the second fixed ring (14) and the upper surface of the rotating disc (11).

5. The foam fire extinguishing spraying device for fully mechanized coal mining face according to claim 1, characterized in that: The mixing device (16) includes a water storage tank (17), a water outlet pipe (18), a water pump (19), a foam liquid storage tank (20) and a mixing chamber (21), the water outlet end of the water storage tank (17) is fixedly installed with the water outlet pipe (18), the water pump (19) is installed on the water outlet pipe (18), the discharge end of the foam liquid storage tank (20) is communicated with the water outlet pipe (18), one end of the water outlet pipe (18) away from the water storage tank (17) is fixedly installed with the mixing chamber (21), and the discharge end of the mixing chamber (21) is communicated with the feed pipe (1).

6. The foam fire extinguishing spraying device for fully mechanized coal mining face according to claim 5, characterized in that: The mixing chamber (21) is provided with an air compressor (22) for providing power to the mixture of foam and water body in the mixing chamber (21).

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