Coal mine underground fire extinguishing device
By installing multiple atomizing nozzles and using universal joints in conjunction with motor drives in underground coal mines, the problem of poor water spraying fire extinguishing effect in existing technologies has been solved, achieving more comprehensive water mist coverage and more efficient fire extinguishing effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XUZHOU HAOBO FIRE PREVENTION & EXTINGUISHING IND TECH RES INST CO LTD
- Filing Date
- 2025-05-07
- Publication Date
- 2026-04-21
AI Technical Summary
In existing technologies, the water-spraying method for extinguishing fires in coal mines is not very effective, as it is difficult to fully cover the fire source, especially the fire source in a hidden corner, resulting in poor fire extinguishing effect.
Design a fire extinguishing device for underground coal mines. It adopts multiple ring-shaped atomizing nozzles and universal joints in conjunction with a cross shaft. The pump body is triggered by a smoke detector to draw water, forming a wide-angle spray coverage. The atomizing nozzles are driven by a motor to swing in different directions to ensure sufficient water mist coverage.
It achieves the formation of a uniform water curtain or water mist layer in underground coal mines, improving fire extinguishing effect and dust settling efficiency, enhancing contact with fire sources and dust, and further improving fire extinguishing effect.
Smart Images
Figure CN224149624U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of underground fire extinguishing devices in coal mines, and more specifically, to an underground fire extinguishing device for coal mines. Background Technology
[0002] A mine shaft is a general term for the shafts, tunnels, equipment, surface buildings, and structures that form an underground coal mine production system. With the rapid development of society, the demand for coal mines is increasing, so many mine shafts have been built for coal mining. Because there is a large amount of coal in the mine shaft, if a fire occurs and cannot be extinguished in time, it will have incalculable serious consequences.
[0003] In existing technologies, common water-spraying fire extinguishing methods are ineffective in the complex fire scenarios of underground coal mines. Firstly, the spraying range cannot fully cover the fire source, and some fire sources are hidden in corners, making them difficult to reach, resulting in poor extinguishing effects. How to invent a fire extinguishing device for underground coal mines to solve these problems has become an urgent issue for those skilled in the art. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides a coal mine underground fire extinguishing device, which aims to solve the problem of poor fire extinguishing effect of common water spraying fire extinguishing methods.
[0005] This utility model is implemented as follows:
[0006] This utility model provides a coal mine underground fire extinguishing device, including a mine shaft and an installation block installed on the mine shaft. The mine shaft has a water tank inside, and an installation groove is opened inside the lower end of the mine shaft. One end of the installation groove has a water hole communicating with the water tank. The side wall of the installation groove has a penetrating water inlet. A pump body is installed inside the installation groove. An electrical box is installed inside the mine shaft. A smoke detector is installed on one side of the mine shaft.
[0007] Multiple mounting blocks are respectively installed on the inner wall of the mine. A water collection trough is provided on one side of each mounting block. An atomizing nozzle is installed on the inner wall of the water collection trough. A telescopic hose is installed on the upper end of each mounting block.
[0008] Preferably, the input pipe of the pump body and the mounting groove are fixedly connected on the side near the water inlet, the outer wall of the water inlet is connected to an external water supply pipe, and the output pipe of the pump body and the mounting groove are fixedly connected on the side near the water hole.
[0009] Preferably, the electrical box is electrically connected to the smoke detector and the pump body respectively, and a plurality of holes communicating with the telescopic hose are opened on one side of the inner wall of the water tank. The two ends of the telescopic hose are fixedly connected to the outer wall of the mine near the water tank and one end of the mounting block respectively.
[0010] Preferably, multiple sets of ear plates are fixedly connected to the side walls of the outer wall of the mine near both ends of the mounting block. Each set of ear plates consists of two pieces, and the two ends of the mounting block are fixedly connected to a rotating shaft that is rotatably connected to the inner wall of the ear plate.
[0011] Preferably, two sets of fixing plates are fixedly connected to both ends of the rotating shaft, and a cross shaft is rotatably connected between each set of fixing plates. Universal joints are rotatably connected to the other two ends of the cross shaft.
[0012] Preferably, multiple sets of the rotating shafts are connected by universal joints, and a motor is installed on one side of the outer wall of one of the ear plates. The output end of the motor is fixedly connected to one end of the rotating shaft on the inner wall of the ear plate, and the motor and the electrical box are electrically connected.
[0013] The beneficial effects of this utility model are:
[0014] Multiple ring-shaped atomizing nozzles installed around the mine can form a wide-angle spray coverage. The spray range of each nozzle overlaps and complements each other, thus forming a uniform water curtain or water mist layer in the area, improving the fire extinguishing effect. At the same time, the universal joints and cross shafts, together with the fixing plate on one side of the mounting plate, enable the atomizing nozzles to swing, thereby further realizing water mist spraying in different directions, increasing the water mist coverage range, and allowing the water mist to come into more thorough contact with the fire and dust, improving the dust settling efficiency, and further enhancing the fire extinguishing effect. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the structure of an underground fire extinguishing device for coal mines provided by an embodiment of this utility model;
[0017] Figure 2 This is a cross-sectional view of the structure of an underground fire extinguishing device for coal mines provided by an embodiment of this utility model;
[0018] Figure 3 This utility model provides an underground fire extinguishing device for coal mines. Figure 2 Enlarged view of the structure of region A in the middle;
[0019] Figure 4 This is a half-sectional view of the structure of an underground fire extinguishing device for coal mines provided by an embodiment of this utility model;
[0020] Figure 5 This is a schematic diagram of another perspective of the structure of an underground fire extinguishing device for coal mines provided by an embodiment of this utility model;
[0021] Figure 6 This utility model provides an underground fire extinguishing device for coal mines. Figure 5 Enlarged view of the structure of region B in the middle.
[0022] In the diagram: 1. Mine shaft; 11. Water tank; 12. Mounting slot; 121. Water hole; 122. Water inlet; 13. Electrical box; 14. Motor; 15. Smoke detector; 16. Ear plate; 2. Pump body; 3. Mounting block; 31. Water collection tank; 32. Atomizing nozzle; 33. Telescopic hose; 34. Rotating shaft; 35. Fixing plate; 4. Cross shaft; 5. Universal joint. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0024] Example, refer to Figures 1-6 A coal mine underground fire extinguishing device includes a mine shaft 1 and an installation block 3 installed on the mine shaft 1. A water tank 11 is provided inside the mine shaft 1. An installation groove 12 is provided inside the lower end of the mine shaft 1. A water hole 121 communicating with the water tank 11 is provided at one end of the installation groove 12. A penetrating water inlet 122 is provided on the side wall of the installation groove 12. A pump body 2 is installed inside the installation groove 12. An electrical box 13 is installed inside the mine shaft 1. A smoke detector 15 is installed on one side of the mine shaft 1.
[0025] Multiple mounting blocks 3 are installed on the inner wall of the mine 1. A water collection trough 31 is provided on one side of the mounting block 3. An atomizing nozzle 32 is installed on the inner wall of the water collection trough 31. A telescopic hose 33 is installed on the upper end of the mounting block 3.
[0026] Furthermore, the input pipe of the pump body 2 is fixedly connected to the side of the mounting groove 12 near the water inlet 122, the outer wall of the water inlet 122 is connected to the external water supply pipe, the output pipe of the pump body 2 is fixedly connected to the side of the mounting groove 12 near the water hole 121, the electrical box 13 is electrically connected to the smoke detector 15 and the pump body 2 respectively, and a plurality of holes communicating with the telescopic hose 33 are opened on one side of the inner wall of the water tank 11, and the two ends of the telescopic hose 33 are fixedly connected to the outer wall of the mine 1 near the water tank 11 and one end of the mounting block 3 respectively.
[0027] It should be noted that when a fire occurs underground, the smoke detector 15 detects that the smoke concentration in the air is higher than normal and transmits a signal to the electrical box 13. At this time, the control system in the electrical box 13 receives the signal and transmits a command to the pump body 2, causing the pump body 2 to start working and draw water from the outside through the water inlet 122. The water is then filled into the water tank 11 through the output pipe on one side of the pump body 2 along the water hole 121. As water is continuously supplied to the water tank 11, the pressure inside the water tank 11 gradually increases, and the water enters the water collection tank 31 inside the mounting block 3 through the hole on one side of the water tank 11 along the telescopic hose 33. Then, under the action of pressure, the water is sprayed outward through the atomizing nozzle 32. The multiple ring-shaped atomizing nozzles 32 set around the mine 1 can form a large-angle spray coverage. The spray range of each nozzle overlaps and complements each other, thereby forming a uniform water curtain or water mist layer in the area, which improves the fire extinguishing effect.
[0028] Furthermore, multiple sets of ear plates 16 are fixedly connected to the side walls of the outer wall of the mine 1 near both ends of the mounting block 3. Each set of ear plates 16 consists of two parts. The two ends of the mounting block 3 are fixedly connected to a rotating shaft 34 that is rotatably connected to the inner wall of the ear plate 16. The two ends of the rotating shaft 34 are fixedly connected to two sets of fixing plates 35. A cross shaft 4 is rotatably connected between each set of fixing plates 35. Universal joints 5 are rotatably connected to the other two ends of the cross shaft 4. The multiple sets of rotating shafts 34 are connected through universal joints 5. A motor 14 is installed on one side of the outer wall of one ear plate 16. The output end of the motor 14 is fixedly connected to one end of the rotating shaft 34 on the inner wall of the ear plate 16. The motor 14 is electrically connected to the electrical box 13.
[0029] It should be noted that after the electrical box 13 receives a fire signal, the motor 14 and the pump body 2 simultaneously receive command signals. At this time, the motor 14 starts working and drives the rotating shaft 34 on one side to rotate the mounting block 3 at one end. During the operation of the motor 14, its output shaft is controlled by the system to swing back and forth at a certain angle, so that the mounting block 3 continuously drives the inner atomizing nozzle 32 to swing. At the same time, the fixing plate 35 at one end cooperates with the cross shaft 4 to rotate the universal joint 5 at one end. The universal joint 5 then controls the mounting block 3 at the other end to rotate in the same way, thereby realizing the swing of all atomizing nozzles 32, thereby further realizing water mist spraying in different directions, increasing the coverage of water mist, allowing water mist to come into full contact with the fire and dust, improving the dust settling efficiency, and further improving the fire extinguishing effect.
[0030] It should be noted that the specific model and specifications of the motor need to be selected and determined based on the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be described in detail here.
[0031] 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 coal mine underground fire extinguishing device, comprising a mine shaft (1) and a mounting block (3) arranged on the mine shaft (1), characterized in that, The mine shaft (1) has a water tank (11) inside, and an installation groove (12) is provided inside the lower end of the mine shaft (1). One end of the installation groove (12) has a water hole (121) that communicates with the water tank (11). The side wall of the installation groove (12) has a penetrating water inlet (122). A pump body (2) is installed inside the installation groove (12). An electrical box (13) is installed inside the mine shaft (1). A smoke detector (15) is installed on one side of the mine shaft (1). Multiple mounting blocks (3) are respectively installed on the inner wall of the mine (1). A water collection trough (31) is provided on one side of the mounting block (3). An atomizing nozzle (32) is installed on the inner wall of the water collection trough (31). A telescopic hose (33) is installed on the upper end of the mounting block (3).
2. A coal mine underground fire extinguishing device according to claim 1, characterised in that, The input pipe of the pump body (2) and the mounting groove (12) are fixedly connected on the side near the water inlet (122). The outer wall of the water inlet (122) is connected to an external water supply pipe. The output pipe of the pump body (2) and the mounting groove (12) are fixedly connected on the side near the water hole (121).
3. A coal mine fire extinguishing device according to claim 2, characterised in that, The electrical box (13) is electrically connected to the smoke detector (15) and the pump body (2) respectively. The inner wall of one side of the water tank (11) has multiple holes that communicate with the telescopic hose (33). The two ends of the telescopic hose (33) are fixedly connected to the outer wall of the mine (1) near the water tank (11) and one end of the mounting block (3) respectively.
4. The coal mine underground fire extinguishing device according to claim 1, characterized in that, The outer wall of the mine (1) is fixedly connected to the side wall near both ends of the mounting block (3) with multiple sets of ear plates (16). Each set of ear plates (16) consists of two parts. The two ends of the mounting block (3) are fixedly connected to a rotating shaft (34) that is rotatably connected to the inner wall of the ear plate (16).
5. A coal mine underground fire extinguishing device according to claim 4, characterized in that, Two sets of fixing plates (35) are fixedly connected to both ends of the rotating shaft (34), and a cross shaft (4) is rotatably connected between each set of fixing plates (35). Universal joints (5) are rotatably connected to the other two ends of the cross shaft (4).
6. A coal mine underground fire extinguishing device according to claim 5, characterized in that, Multiple sets of the rotating shafts (34) are connected by universal joints (5). A motor (14) is installed on one side of the outer wall of one of the ear plates (16). The output end of the motor (14) is fixedly connected to one end of the rotating shaft (34) on the inner wall of the ear plate (16). The motor (14) and the electrical box (13) are electrically connected.