Water-saving type coal mine dustproof spraying device

Abstract

The utility model discloses a water-saving type coal mine dustproof spraying device, which belongs to the technical field of spraying and dust falling and comprises a water distribution pipe mounted at the top of a coal mine tunnel, a dust concentration sensor mounted on the water distribution pipe and a plurality of atomization spraying components mounted at intervals. The atomization spraying assembly comprises a four-way pipe, a movable spray head and a plurality of atomization spraying assemblies installed at intervals, the movable spray head comprises an installation ring, a plunger liquid inlet pipe and an atomization spray head, the installation ring is connected with the first installation end, and a liquid inlet is formed in the side face of the bottom of the plunger liquid inlet pipe and is in sealed sliding connection with the installation ring; the atomizing nozzle is rotationally arranged at the top of the plunger liquid inlet pipe, and a control structure for driving the plunger liquid inlet pipe to move is arranged between the plunger liquid inlet pipe and the second mounting end. According to the dustproof spraying device, the dust concentration change in the roadway can be monitored in real time through the dust concentration sensor, unnecessary water resource waste is avoided, and the dual purposes of precise dust falling and energy saving are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of spray dust reduction, and particularly relates to a water-saving coal mine dust-proof spray device. Background Technique

[0002] Coal mine tunneling and transportation, as an important part of the production process of coal mine enterprises, are characterized by narrow working spaces, many mechanical equipment, poor visual environments, relatively high operating temperatures, and relatively large coal (rock) dust. They are prone to coal mine accidents. Coal mine roof accidents, gas explosion accidents, water inrush accidents, coal dust explosion accidents, and coal mine occupational diseases all account for a relatively large proportion in the heading face. To eliminate the hazards of coal (rock) dust and ensure the health and safety of workers, a dust-proof spray device must be installed in the coal mine tunneling roadway to effectively reduce the dust concentration.

[0003] The traditional coal mine tunneling roadway dust-proof spray device mainly uses a water pump to transport water under high pressure into the spray water pipe, and then sprays water mist through multiple nozzles for dust reduction (such as the track comprehensive dust-proof sprinkler disclosed in CN201320846002.3). In the coal mine tunneling roadway, the dust concentration will continuously change with the progress of tunneling operations. Since the traditional dust-proof spray device cannot monitor the dust concentration in the roadway in real time, it cannot perform adaptive spray control according to the actual situation of the dust concentration. This results in the waste of water resources when the dust concentration is relatively low and the spray device still continues to work; while when the dust concentration is relatively high, the spray device may not be able to start in time and needs to be manually turned on, so it cannot effectively reduce the dust concentration.

[0004] Therefore, we propose a water-saving coal mine dust-proof spray device to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to solve the problem in the prior art that when the dust concentration is relatively low, the spray device still continues to work, resulting in the waste of water resources, and to propose a water-saving coal mine dust-proof spray device.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A water-saving coal mine dust-proof spray device includes a water distribution pipe installed along the top of the coal mine roadway. A dust concentration sensor is installed on the water distribution pipe, and atomizing spray components are also installed on the water distribution pipe at intervals. The atomizing spray component includes a four-way pipe and a movable nozzle, where:

[0008] The four-way pipe has a water inlet end, a water outlet end, a first installation end, and a second installation end. The water inlet end and the water outlet end are communicated with the water distribution pipe. The movable nozzle is sealed and installed on the first installation end, and the bottom of the second installation end is closed;

[0009] The movable spray head includes a mounting ring, a plunger liquid inlet pipe, and an atomizing spray head. The mounting ring is threadedly connected to the first mounting end. The plunger liquid inlet pipe is hermetically and slidably connected to the mounting ring, and a liquid inlet is provided on the lower side of the plunger liquid inlet pipe. The atomizing spray head is rotatably arranged at the top of the plunger liquid inlet pipe. A control structure for driving the movement of the plunger liquid inlet pipe is provided between the plunger liquid inlet pipe and the second mounting end.

[0010] Preferably, the control structure includes a spring fixedly arranged between the plunger liquid inlet pipe and the second mounting end. A magnet is fixedly installed at the bottom of the plunger liquid inlet pipe. An electromagnetic iron plate attracted to the magnet correspondingly is installed in the second mounting end. The electromagnetic iron plate is electrically connected to the dust concentration sensor.

[0011] Preferably, the suction force generated between the electromagnetic iron plate and the magnet after the electromagnetic iron plate is electrified is greater than the elastic force of the spring.

[0012] Preferably, an external chamfer is provided at the bottom end of the mounting ring. A sealing boss is provided inside the first mounting end. An internal chamfer adapted to the external chamfer is provided on the sealing boss, and a sealing ring is provided on the conical surface of the internal chamfer.

[0013] Preferably, limiting rings are fixedly connected to both ends of the plunger liquid inlet pipe. The outer diameter of the limiting ring is greater than the inner diameter of the mounting ring, so that the plunger liquid inlet pipe has a first limit position and a second limit position in the axial movement. When in the first limit position, the liquid inlet is closed by the mounting ring. When in the second limit position, the liquid inlet is located inside the four-way pipe.

[0014] Preferably, the input end of the atomizing spray head is communicated with the inside of the plunger liquid inlet pipe. The atomizing spray head has a plurality of position cross-sections and spray heads inclined in the direction of the diameter.

[0015] In summary, the utility model has the following technical effects and advantages:

[0016] The water-saving coal mine dust prevention spray device can, through the dust concentration sensor, monitor the change of the dust concentration in the roadway in real time. When the dust concentration reaches the preset threshold, the spray will be automatically started to ensure timely intervention when the dust concentration increases, effectively suppressing the spread of dust. When the dust concentration is relatively low, the spray will be suspended to avoid unnecessary waste of water resources, achieving the dual goals of accurate dust reduction and energy conservation.

[0017] The atomizing spray component controls the plunger liquid inlet pipe through the control structure to realize spraying. The water distribution pipe can be in an always-open state. The dust concentration sensor controls the atomizing spray component to spray according to the specific layout of the roadway and the dust reduction requirements, without the need for manual monitoring and control of the water distribution pipe switch, reducing the labor intensity. Description of the Drawings

[0018] Figure 1Schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 Schematic diagram of the structure of the liquid inlet pipe of the plunger of the present utility model at the second limit position;

[0020] Figure 3 Schematic diagram of the structure of the liquid inlet pipe of the plunger of the present utility model at the first limit position;

[0021] Figure 4 is Figure 2 Enlarged schematic diagram of part A in

[0022] Figure 5 Schematic diagram of the sectional structure of the atomizing nozzle of the present utility model;

[0023] Figure 6 Schematic diagram of the structure of the four-way pipe of the present utility model.

[0024] In the figure: 1, water distribution pipe; 2, atomizing spray component; 3, four-way pipe; 31, electromagnetic iron plate; 32, spring; 33, sealing boss; 34, sealing ring; 4, movable nozzle; 41, mounting ring; 42, plunger liquid inlet pipe; 421, limiting ring; 43, atomizing nozzle; 431, nozzle; 44, magnet; 5, dust concentration sensor. Specific implementation manner

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0026] Refer to Figures 1-6 , a water-saving coal mine dust suppression spray device, including a plurality of water distribution pipes 1 installed at intervals along the top of the coal mine roadway, a dust concentration sensor 5 is installed on each water distribution pipe 1, and a plurality of atomizing spray components 2 are also installed at intervals on each water distribution pipe 1. The number of atomizing spray components 2 is installed appropriately according to the dust removal requirements. The atomizing spray component 2 includes a four-way pipe 3 and a movable nozzle 4. During installation, it is necessary to connect the water distribution pipe 1 with the four-way pipe 3 and introduce high-pressure water flow into the four-way pipe 3.

[0027] The four-way pipe 3 has a water inlet end, a water outlet end, a first installation end and a second installation end (such as Figure 2 , Figure 3 , Figure 6In the shown position, the first installation end is located at the top of the four-way pipe 3, the second installation end is located at the bottom of the four-way pipe 3, the water inlet end is located on one side of the four-way pipe 3 and is connected to the water distribution pipe 1 on this side, and the water outlet end is located on the other side of the four-way pipe 3 and is connected to the water distribution pipe 1 on the other side. The connection method can be welding or threaded connection). The water flow in the water distribution pipe 1 enters the four-way pipe 3 through the water inlet end and flows to the next atomizing spray assembly 2 through the water outlet end. The movable nozzle 4 is sealed and installed on the first installation end, the bottom of the second installation end is closed, the first installation end is a through end, and water flow can enter the first installation end. The second installation end is a closed end, and water flow cannot be discharged from the second installation end.

[0028] Refer to Figures 2-3 , the movable nozzle 4 includes a mounting ring 41, a plunger liquid inlet pipe 42 and an atomizing nozzle 43. The mounting ring 41 is threadedly connected to the first installation end. When repairing and replacing the movable nozzle 4, by rotating the mounting ring 41, the movable nozzle 4 can be removed. An external chamfer is provided at the bottom end of the mounting ring 41, and a sealing boss 33 is provided inside the first installation end. An internal chamfer adapted to the external chamfer is provided on the sealing boss 33. Through the cooperation of the external chamfer and the internal chamfer, the sealing area is effectively increased, and a sealing ring 34 is provided on the conical surface of the internal chamfer. When the internal chamfer and the external chamfer cooperate, the sealing ring 34 is squeezed to achieve sealing and ensure the airtightness during the installation of the mounting ring 41. Liquid inlet openings 45 are provided on the lower side surface of the plunger liquid inlet pipe 42, and the plunger liquid inlet pipe 42 is in sealed sliding connection with the mounting ring 41 (in addition, sealing gaskets can be installed on the bottom surface of the upper limiting ring 421 and the top surface of the lower limiting ring 421 of the plunger liquid inlet pipe 42). The plunger liquid inlet pipe 42 axially slides on the mounting ring 41 to change its position, controlling the water flow in the four-way pipe 3 to enter the plunger liquid inlet pipe 42, thereby controlling the spraying state of the atomizing nozzle 43. The atomizing nozzle 43 is rotatably arranged on the top of the plunger liquid inlet pipe 42 (the two can be rotatably connected through a plain bearing). After high-pressure water flow enters the plunger liquid inlet pipe 42, it sprays out from the atomizing nozzle 43 and drives the atomizing nozzle 43 to rotate under the action of water pressure, realizing comprehensive spray dust removal in the dust removal area. A control structure for driving the plunger liquid inlet pipe 42 to move is provided between the plunger liquid inlet pipe 42 and the second installation end, so that under different dust concentration states, the water inlet and closing of the plunger liquid inlet pipe 42 are controlled, avoiding unnecessary waste of water resources and achieving the dual goals of precise dust reduction and energy saving.

[0029] Refer to Figures 2-3, the control structure includes a spring 32 fixedly arranged between the plunger liquid inlet pipe 42 and the second installation end. In the initial state, the elastic force of the spring 32 causes the plunger liquid inlet pipe 42 to move upward until the liquid inlet 45 is closed by the installation ring 41. Without affecting the water flow in the water distribution pipe 1, the atomizing nozzle 43 is closed. A magnet 44 is fixedly installed at the bottom of the plunger liquid inlet pipe 42, and an electromagnetic iron plate 31 corresponding to and attracting the magnet 44 is installed in the second installation end. The electromagnetic iron plate 31 is electrically connected to the dust concentration sensor 5, and the energization condition of the electromagnetic iron plate 31 is controlled by the electrical signal of the dust concentration sensor 5. The specific implementation method is a conventional design for those skilled in the field of electrical control and will not be elaborated here. After the electromagnetic iron plate 31 is energized, the suction force generated between it and the magnet 44 is greater than the elastic force of the spring 32. When the electromagnetic iron plate 31 is energized, the electromagnetic iron plate 31 attracts the magnet 44, causing the magnet 44 to drive the plunger liquid inlet pipe 42 to move downward against the elastic force of the spring 32, exposing the liquid inlet 45 in the four-way pipe 3, so that water can enter the plunger liquid inlet pipe 42 and be sprayed out from the atomizing nozzle 43. Through the dust concentration sensor 5, the change of the dust concentration in the roadway can be monitored in real time. When the dust concentration reaches the preset threshold, the spray will be automatically started to ensure timely intervention when the dust concentration increases and effectively inhibit the spread of dust. When the dust concentration is low, the spray will be suspended.

[0030] Refer to Figures 2-3 , both ends of the plunger liquid inlet pipe 42 are fixedly connected with limit rings 421. The outer diameter of the limit rings 421 is greater than the inner diameter of the installation ring 41. The movement of the plunger liquid inlet pipe 42 is limited by the limit rings 421, so that the axial movement of the plunger liquid inlet pipe 42 has a first limit position and a second limit position. At the first limit position, the liquid inlet 45 is closed by the installation ring 41. At the second limit position, the liquid inlet is inside the four-way pipe 3.

[0031] Refer to Figure 5 , the input end of the atomizing nozzle 43 is communicated with the inside of the plunger liquid inlet pipe 42. The atomizing nozzle 43 has a plurality of position cross-sections and nozzles 431 inclined in the diameter direction. When high-pressure water enters the plunger liquid inlet pipe 42, it is sprayed out by the nozzles 431 and generates a reverse pushing force to drive the atomizing nozzle 43 to rotate. In the coal mine driving roadway, the rotating atomizing nozzle 43 can cover the entire roadway space more quickly and effectively inhibit the spread of dust.

[0032] The working process of the present utility model is as follows:

[0033] During use, a plurality of water distribution pipes 1 are installed at intervals along the top of the coal mine roadway. An appropriate number of atomizing spray components 2 are installed on each water distribution pipe 1 according to the dust removal requirements. Through the dust concentration sensor 5, the change of the dust concentration in the roadway can be monitored in real time. The dust concentration sensor 5 in this embodiment can be of the GCG type. The energization condition of the electromagnetic iron plate 31 is controlled by the electrical signal of the dust concentration sensor 5. When the dust concentration reaches the preset threshold, the electromagnetic iron plate 31 is energized, and the electromagnetic iron plate 31 attracts the magnet 44, so that the magnet 44 drives the plunger inlet pipe 42 to move downward against the elastic force of the spring 32 to reach the second limit position (the upper limit ring 421 of the plunger inlet pipe 42 is limited by the mounting ring 41), so that the liquid inlet 45 is exposed in the four-way pipe 3, so that water can enter the plunger inlet pipe 42 and be sprayed out from the atomizing nozzle 43. When the dust concentration is low, the electromagnetic iron plate 31 is de-energized and loses its magnetic force, and the elastic force of the spring 32 makes the plunger inlet pipe 42 move upward to reach the first limit position (the lower limit ring 421 of the plunger inlet pipe 42 is limited by the sealing boss 33), the liquid inlet 45 is closed by the mounting ring 41, the atomizing nozzle 43 is closed, and the water flow in the water distribution pipe 1 can flow to the lower-level water distribution pipe, avoiding unnecessary waste of water resources and achieving the dual goals of precise dust reduction and energy conservation.

[0034] In addition, during actual installation, the atomizing nozzle 43 is installed with a downward inclination, and the position of the dust concentration sensor 5 can be arranged and installed according to the actual situation.

Claims

1. A water-saving coal mine dust suppression spray device, including a water distribution pipe (1) installed on the top of the coal mine roadway. A dust concentration sensor (5) is installed on the water distribution pipe (1), and atomizing spray components (2) are also installed at intervals on the water distribution pipe (1). It is characterized in that, The atomizing spray component (2) includes a four-way pipe (3) and a movable spray head (4), where: The four-way pipe (3) has a water inlet end, a water outlet end, a first mounting end, and a second mounting end. The water inlet end and the water outlet end are communicated with the water distribution pipe (1). The movable spray head (4) is hermetically mounted on the first mounting end, and the bottom of the second mounting end is closed; The movable spray head (4) includes a mounting ring (41), a plunger liquid inlet pipe (42), and an atomizing spray head (43). The mounting ring (41) is threadedly connected to the first mounting end. The plunger liquid inlet pipe (42) is hermetically and slidably connected to the mounting ring (41), and a liquid inlet (45) is provided on the lower side surface of the plunger liquid inlet pipe (42). The atomizing spray head (43) is rotatably arranged on the top of the plunger liquid inlet pipe (42). A control structure for driving the plunger liquid inlet pipe (42) to move is provided between the plunger liquid inlet pipe (42) and the second mounting end.

2. The water-saving coal mine dust-proof spraying device according to claim 1, wherein The control structure includes a spring (32) fixedly arranged between the plunger liquid inlet pipe (42) and the second mounting end. A magnet (44) is fixedly installed at the bottom of the plunger liquid inlet pipe (42). An electromagnetic iron plate (31) attracted to the magnet (44) correspondingly is installed in the second mounting end. The electromagnetic iron plate (31) is electrically connected to the dust concentration sensor (5).

3. The water-saving coal mine dust-proof spray device according to claim 2, characterized in that, The suction force generated between the electromagnetic iron plate (31) and the magnet (44) after the electromagnetic iron plate (31) is electrified is greater than the elastic force of the spring (32).

4. A water-saving coal mine dust suppression spray device according to claim 1, characterized in that, An external chamfer is provided at the bottom end of the mounting ring (41). A sealing boss (33) is provided inside the first mounting end. An internal chamfer adapted to the external chamfer is provided on the sealing boss (33), and a sealing ring (34) is provided on the conical surface of the internal chamfer.

5. The water-saving coal mine dust suppression spray device according to claim 1, characterized in that, Limit rings (421) are fixedly connected to both ends of the plunger liquid inlet pipe (42). The outer diameter of the limit ring (421) is larger than the inner diameter of the mounting ring (41). The limit ring (421) enables the plunger liquid inlet pipe (42) to axially move to have a first limit position and a second limit position. When in the first limit position, the liquid inlet (45) is closed by the mounting ring (41). When in the second limit position, the liquid inlet (45) is located inside the four-way pipe (3).

6. The water-saving coal mine dust suppression spray device according to claim 1, characterized in that, The input end of the atomizing spray head (43) is communicated with the inside of the plunger liquid inlet pipe (42). The atomizing spray head (43) has a plurality of spray heads (431) with cross-sections at positions inclined in the direction of the diameter.

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