A granular inhibitor spraying device for mining

Abstract

The present invention discloses a granular inhibitor spraying device for mining, which relates to the field of spraying devices and mainly includes: a gas conveying unit, an automatic weighing unit, a granular inhibitor stirring unit, an ultrasonic vibration system, and a crushed material extraction system; the automatic weighing unit controls the amount of granular inhibitor entering the granular inhibitor stirring unit; the granular inhibitor stirring unit dispenses a variety of granular inhibitors and stirs the granular inhibitors to form a catalytic material; the gas conveying unit provides gas power in the form of compressed air, so that the catalytic material in the storage bin is transported to the spraying system through a conveying pipeline; the ultrasonic vibration system provides an ultrasonic vibration function to clean the catalytic material deposits inside the spraying system and / or inside the conveying pipeline; and the crushed material extraction system extracts the crushed materials formed under the ultrasonic vibration function. The present invention can timely, effectively, and simply clean blockages, thereby improving the efficiency of coal spontaneous combustion prevention and control work.

Description

Technical Field

[0001] The invention relates to the field of spraying devices, in particular to a granular inhibitor spraying device for mining. Background Art

[0002] Mine fires are one of the major hazards that directly threaten underground coal mine safety and cause significant losses. Due to the complex and diverse conditions and geological structures of coal seams, disasters and accidents are frequent. Fires caused by spontaneous combustion of coal are particularly prominent, accounting for approximately 90% of all mine fires. Spontaneous combustion not only wastes coal resources and poses a serious threat to coal mine safety, but also releases large amounts of toxic and harmful gases, causing serious damage to human health, the economy, the environment, and social development. To strengthen mine fire prevention and control, the use of inhibitors offers significant economic benefits for the coal mining industry.

[0003] There are many types of inhibitors, including solid, liquid, and gas phases. Traditional solid granular inhibitor spraying devices are prone to clogging after prolonged spraying, preventing the inhibitor from flowing quickly into high-temperature areas and directly impacting the effectiveness of coal spontaneous combustion prevention efforts.

[0004] How to clean the blockage in a timely, effective and simple manner is a difficult problem that the solid granular inhibitor spraying device needs to solve. Summary of the Invention

[0005] The purpose of the present invention is to provide a granular inhibitor spraying device for mining, which can timely, effectively and simply clear blockages and improve the efficiency of coal spontaneous combustion prevention and control.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] A granular inhibitor spraying device for mining, comprising: a gas conveying unit, a granular inhibitor stirring and storing unit, a conveying pipeline, a spraying system, an ultrasonic vibration system, and a crushed material extraction system; wherein the granular inhibitor stirring and storing unit is provided with an automatic weighing unit, a granular inhibitor stirring unit, and a storage bin in order from top to bottom;

[0008] The automatic weighing unit is used to obtain the weight of the granular inhibitor to control the usage of the granular inhibitor entering the granular inhibitor stirring unit;

[0009] The granular inhibitor stirring unit is used to stir the granular inhibitor to form an inhibitor material;

[0010] The storage bin is used to store the retardant material;

[0011] The gas outlet of the gas conveying portion is connected to the gas inlet of the storage bin; one end of the conveying pipeline is connected to the discharge port of the storage bin, and the spraying system is installed on the other end area of ​​the conveying pipeline; the gas conveying portion is used to provide gas power in the form of compressed air; the gas power is used to move the retardant material in the storage bin to the spraying system through the conveying pipeline;

[0012] The ultrasonic vibration system and the broken object extraction system are both installed on the conveying pipeline; the ultrasonic vibration system is used to provide an ultrasonic vibration function; the ultrasonic vibration function is used to clean the inhibitor deposits inside the spraying system and / or inside the conveying pipeline; the broken object extraction system is used to extract the broken objects formed under the ultrasonic vibration function.

[0013] Optionally, the granular inhibitor stirring and storing portion further comprises a box; wherein the automatic weighing unit, the granular inhibitor stirring unit and the storage bin are all arranged in the box;

[0014] Several feeding ports are provided on the top of the box body, which are used to feed granular inhibitors; the granular inhibitor stirring unit includes a three-dimensional mixer and a rocker arm connected to the three-dimensional mixer; the rocker arm is used to drive the three-dimensional mixer to shake up and down to achieve uniform mixing of multiple granular inhibitors, thereby forming an inhibitory material.

[0015] Optionally, it further includes a rotating shaft; one end of the rotating shaft is fixed to the top of the box body, and the other end of the rotating shaft passes through the automatic weighing unit and the top of the granular inhibitor stirring unit in sequence, and is fixed to the bottom of the granular inhibitor stirring unit;

[0016] The rotating shaft is used to drive the automatic weighing unit and the granular inhibitor stirring unit to rotate and translate up and down.

[0017] Optionally, the automatic blanking part is a cylindrical cavity structure; a first blanking port is provided at the bottom of the automatic blanking part; the rotating shaft is provided at the center of the cylinder of the automatic blanking part, and a plurality of first partitions rotating around the rotating shaft are provided in the automatic blanking part; the first partition is used to divide the automatic blanking part into a plurality of weighing areas; a feeding port is provided at the top of the weighing area, and a gravity sensor is provided at the bottom of the weighing area.

[0018] Optionally, the interior of the three-dimensional mixer is a cylindrical space, the rotating shaft is provided at the center of the cylindrical space, and a second partition rotating around the rotating shaft is provided in the cylindrical space; the second partition is used to divide the cylindrical space into two parts, namely a stirring space and a blanking space; a plurality of switchable feed ports are provided at the top of the stirring space, and the feed ports are used to connect to the first blanking port of the automatic blanking part; a second blanking port is provided at the bottom of the blanking space; the second blanking port is used to transport the inhibitory material to the storage bin.

[0019] Optionally, the storage bin includes a bin body; the bin body is a cavity structure with two ends open; a liftable tray is provided at the bottom of the bin body, and a rotatable third partition is provided at the top of the bin body;

[0020] During operation, the capacity of the warehouse body is controlled by the liftable tray, and the capacity of the retardant material entering the warehouse body is controlled by the third partition, so that all the retardant materials inside the warehouse body are then transported into the conveying pipeline by the high-pressure gas flow transported by the gas conveying part.

[0021] Optionally, the gas delivery unit is a high-pressure blower; the high-pressure blower includes a power unit, an air duct and an air flow pipeline; wherein the air outlet of the air duct is connected to the air inlet of the air flow pipeline; the air outlet of the air flow pipeline is connected to the air inlet of the storage bin;

[0022] During operation, the air inlet of the air duct absorbs a large amount of external air, and under the action of the power unit, compresses and converts the external air to form high-pressure gas; the high-pressure gas flows into the lower layer of the storage bin through the air duct, the air flow pipeline, and the air inlet of the storage bin in sequence.

[0023] Optionally, the spraying system is a pneumatic rotary nozzle; the pneumatic rotary nozzle includes a nozzle body, a rotating shaft seat and a rotating nozzle; a pneumatic pump and a catalytic material conveying channel are provided in the nozzle body; the catalytic material conveying channel is provided with a first air inlet, a first feed port and a delivery port; the catalytic material conveying channel is connected to the pneumatic pump through the first air inlet; the catalytic material conveying channel is connected to the other port of the conveying pipeline through the first feed port; the rotary nozzle is provided with a second feed port; the second feed port of the rotary nozzle is connected to the delivery port of the catalytic material conveying channel, and the rotary nozzle is installed on the rotating shaft seat; the pneumatic pump is used to provide power for spraying the catalytic material by compressed air; the power for spraying the catalytic material is used to ensure that the catalytic material is sprayed onto the high-temperature coal surface at a longer distance through the rotary nozzle.

[0024] Optionally, the ultrasonic vibration system includes a detection unit, an ultrasonic transducer and a mechanical structure;

[0025] The detection unit is used to detect the blockage status of the spraying system and the delivery pipeline, and output an ultrasonic transducer start instruction when the blockage status meets a preset condition;

[0026] The ultrasonic transducer is used to receive the ultrasonic transducer start-up instruction and start it, and then transmit the ultrasonic energy to the inhibitor deposit deposition area through the mechanical structure; the ultrasonic energy can crush the inhibitor deposits inside the spraying system and / or inside the conveying pipeline to form broken objects.

[0027] Optionally, the crushed material extraction system is a self-priming chemical pump; the self-priming chemical pump is provided with a plurality of suction ports and outlets; wherein, a part of the suction ports is connected to the conveying channel, and another part of the suction ports is connected to the spraying system.

[0028] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0029] The present invention provides a granular inhibitor spraying device for mining, comprising: a gas conveying unit, a granular inhibitor stirring and storage unit, a conveying pipeline, a spraying system, an ultrasonic vibration system, and a crushed material extraction system. The present invention utilizes compressed air provided by the gas conveying unit as power to transport solid granular inhibitor underground in a mine. The spraying system is used to spray the inhibitor, and the ultrasonic vibration system is combined with the crushed material extraction system. This effectively resolves problems with the conveying pipeline and spraying system caused by long-term granular inhibitor spraying. The device offers advantages such as ease of operation and maintenance, high reliability, and a long spraying distance. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 This is a structural block diagram of a granular inhibitor spraying device for mining according to the present invention;

[0032] Figure 2 The figure is a schematic structural diagram of a granular inhibitor spraying device for mining according to the present invention.

[0033] Description of reference numerals:

[0034] 1—High-pressure fan; 2—Air inlet; 3—Air outlet; 4—Air duct; 5—Power unit; 6—Air flow pipeline; 7—Box; 8—Feeding port; 9—Three-dimensional mixer; 10—Rocker arm; 11—Storage bin; 12—Gravity sensor plate; 13—Conveying pipeline; 14—Pneumatic rotary nozzle; 15—Rotating shaft seat; 16—Pneumatic pump; 17—Spraying port; 18—Ultrasonic vibration system; 19—Ultrasonic power supply; 20—Ultrasonic transducer; 21—Mechanical structure (amplifier); 22—Self-priming chemical pump; 23—Suction port; 24—Outlet; 25—First partition; 26—First blanking port; 27—Feeding port; 28—Liftable tray; 29—Automatic weighing unit; 30—Rotating shaft; 31—Second partition; 32—Second blanking port; 33—Third partition. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] In response to the above-mentioned deficiencies in the prior art, the present invention provides a granular inhibitor spraying device for mining, which has a reasonable design, a long inhibitor spraying distance, a wide spraying range, and can effectively avoid the problem of solid inhibitor clogging, and is highly practical.

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] Example 1

[0039] See also Figure 1 This embodiment provides a granular inhibitor spraying device for mining, including: a gas conveying part, a granular inhibitor stirring and storage part, a conveying pipeline, a spraying system, an ultrasonic vibration system and a crushed material extraction system; wherein, the granular inhibitor stirring and storage part is provided with an automatic weighing unit, a granular inhibitor stirring unit and a storage bin in sequence from top to bottom.

[0040] The automatic weighing unit is used to obtain the weight of the granular inhibitor to control the usage of the granular inhibitor entering the granular inhibitor stirring unit.

[0041] The granular inhibitor stirring unit is used to stir the granular inhibitor to form an inhibitor material.

[0042] The storage bin is used to store the resistance material.

[0043] The air outlet of the gas conveying part is connected to the air inlet of the storage bin; one port of the conveying pipeline is connected to the discharge port of the storage bin, and the spraying system is installed on the other port area of ​​the conveying pipeline; the gas conveying part is used to provide gas power in the form of compressed air; the gas power is used to transport the inhibitory material in the storage bin to the spraying system through the conveying pipeline.

[0044] The ultrasonic vibration system and the broken object extraction system are both installed on the conveying pipeline; the ultrasonic vibration system is used to provide an ultrasonic vibration function; the ultrasonic vibration function is used to clean the inhibitor deposits inside the spraying system and / or inside the conveying pipeline; the broken object extraction system is used to extract the broken objects formed under the ultrasonic vibration function.

[0045] As a preferred embodiment, the granular inhibitor stirring and storage part described in this embodiment further includes a box body; wherein the automatic weighing unit, the granular inhibitor stirring unit and the storage bin are all arranged in the box body.

[0046] The top of the box body is provided with a plurality of feeding ports; the feeding ports are used for feeding granular inhibitors; when there are multiple granular inhibitors, different inhibitors can be fed through different feeding ports.

[0047] The granular inhibitor stirring unit includes a three-dimensional mixer and a rocker arm connected to the three-dimensional mixer; the rocker arm is used to drive the three-dimensional mixer to shake up and down to achieve uniform mixing of multiple granular inhibitors, thereby forming an inhibitor material.

[0048] Furthermore, the mining granular inhibitor spraying device described in this embodiment also includes a rotating shaft; one end of the rotating shaft is fixed to the top of the box body, and the other end of the rotating shaft passes through the top of the automatic weighing unit and the granular inhibitor stirring unit in sequence, and is fixed to the bottom of the granular inhibitor stirring unit; the rotating shaft is used to drive the automatic weighing unit and the granular inhibitor stirring unit to perform rotation operations and up and down translation operations.

[0049] The automatic blanking part is a cylindrical cavity structure; a first blanking port is provided at the bottom of the automatic blanking part; the rotating shaft is provided at the center of the cylinder of the automatic blanking part, and a plurality of first partitions rotating around the rotating shaft are provided in the automatic blanking part; the first partitions are used to divide the automatic blanking part into a plurality of weighing areas; a feed port is provided at the top of the weighing area, and a gravity sensor is provided at the bottom of the weighing area. One of the weighing areas is used to place an inhibitor. The weighing area can weigh the weight of the inhibitor so that the device can be used to control the amount of the stored inhibitor to avoid excessive input of the inhibitor and waste of resources.

[0050] The interior of the three-dimensional mixer is a cylindrical space, the rotating shaft is provided at the center of the cylindrical space, and a second partition rotating around the rotating shaft is provided in the cylindrical space; the second partition is used to divide the cylindrical space into two parts, namely a stirring space and a blanking space; a plurality of switchable feed ports are provided at the top of the stirring space, and the feed ports are used to connect to the first blanking port of the automatic blanking part, that is, the top of the stirring space is provided with a feed port corresponding to the position and shape of the first blanking port of the automatic weighing part; a second blanking port is provided at the bottom of the blanking space; the second blanking port is used to transport the inhibitory material to the storage bin.

[0051] An example is: the first partition is a rectangular partition, the second partition is a right-angle L-shaped partition, the first blanking port and the second blanking port are both fan-shaped blanking ports, and preferably, the second blanking port is a fan-shaped blanking port with an angle of 90°.

[0052] In working state, the rocker arm is connected to the box body, driving the mixer to shake to achieve uniform mixing of various inhibitor materials. The stirred inhibitor materials are pushed by the L-shaped partition and fall into the storage bin below through the fan-shaped drop port with an angle of 90°.

[0053] The storage bin includes a bin body; the bin body is a cavity structure with openings at both ends; a liftable tray is provided at the bottom of the bin body, and a rotatable third partition is provided at the top of the bin body.

[0054] When the third partition rotates to the specified position, the feed port of the warehouse body will be formed, so that the feed port of the warehouse body is connected with the second blanking port of the three-dimensional mixer, and the inhibitory material is transported to the storage warehouse. When the blanking is completed, the third partition is closed, which can effectively control the directional flow of the inhibitory material; the warehouse body is composed of the surrounding box walls; the liftable tray is manually controlled by a motor; the liftable tray is used to control the capacity of the warehouse body.

[0055] During operation, the capacity of the warehouse body is controlled by the liftable tray, and the capacity of the inhibitory material entering the warehouse body is controlled by the third partition, so that all the inhibitory materials inside the warehouse body can be sent into the conveying pipeline along with the high-pressure gas flow, and there will be no residual inhibitory materials in the groove part of the storage warehouse (the angle between the lifting tray and the box wall).

[0056] As a preferred embodiment, the gas delivery unit described in this embodiment is a high-pressure blower; the high-pressure blower is connected to the lower level of the storage bin and uses compressed air to provide power for transporting the retardant material. The delivery pipeline is used to transport the retardant material and prevents the retardant material from being affected by the external environment during transportation, which could weaken the retardant effect.

[0057] Furthermore, the high-pressure blower includes a power unit, an air duct and an air flow pipeline; wherein, the air outlet of the air duct is connected to the air inlet of the air flow pipeline; and the air outlet of the air flow pipeline is connected to the air inlet of the storage bin.

[0058] During operation, the air inlet of the air duct absorbs a large amount of external air, and under the action of the power unit, compresses and converts the external air to form high-pressure gas; the high-pressure gas flows into the lower layer of the storage bin through the air duct, the air flow pipeline, and the air inlet of the storage bin in sequence.

[0059] As a preferred embodiment, the spraying system described in this embodiment is a pneumatic rotary sprinkler head fixed to the bottom of the conveying pipe.

[0060] The pneumatic rotary nozzle includes a nozzle body, a rotating shaft seat and a rotating nozzle; the nozzle body is provided with a pneumatic pump and a catalytic material delivery channel; the catalytic material delivery channel is provided with a first air inlet, a first feed port and a delivery port; the catalytic material delivery channel is connected to the pneumatic pump through the first air inlet; the catalytic material delivery channel is connected to another port of the delivery pipeline through the first feed port; the rotary nozzle is provided with a second feed port; the second feed port of the rotary nozzle is connected to the delivery port of the catalytic material delivery channel; the rotary nozzle is installed on the rotating shaft seat, and the rotating shaft seat drives the rotary nozzle to move, thereby increasing the spraying range; the pneumatic pump is used to provide power for spraying the catalytic material using compressed air; the catalytic material spraying power is used to ensure that the catalytic material is sprayed onto the high-temperature coal surface at a distance through the rotary nozzle. The pneumatic rotary nozzle is installed with a rotating shaft seat; the spray port of the rotary nozzle is designed as a shower type, which plays a role in uniform spraying.

[0061] As a preferred embodiment, the ultrasonic vibration system described in this embodiment is used to clean inhibitor deposits formed by long-term spraying, thereby preventing blockage of the delivery pipeline and pneumatic rotary nozzle. Preferably, the ultrasonic vibration system and self-priming chemical pump are both fixed to the top of the delivery pipeline.

[0062] Furthermore, the ultrasonic vibration system includes a detection unit, an ultrasonic transducer and a mechanical structure.

[0063] The detection unit is used to detect the blockage status of the spraying system and the delivery pipeline, and output an ultrasonic transducer start instruction when the blockage status meets a preset condition.

[0064] The ultrasonic transducer is used to receive the ultrasonic transducer start-up instruction and start it, and then transmit the ultrasonic energy to the inhibitor deposit deposition area through the mechanical structure; the ultrasonic energy can crush the inhibitor deposits inside the spraying system and / or inside the conveying pipeline to form broken objects.

[0065] As a preferred embodiment, the crushed material extraction system described in this embodiment is a self-priming chemical pump; the self-priming chemical pump can extract the crushed materials formed under the action of ultrasonic vibration, prevent re-clogging caused by the accumulation of crushed materials, and facilitate the recycling and reuse of the crushed materials.

[0066] Furthermore, the self-priming chemical pump is provided with a plurality of suction ports and outlets; wherein, a portion of the suction ports are connected to the conveying channel, and another portion of the suction ports are connected to the spraying system.

[0067] The implementation process of a granular inhibitor spraying device for mining provided in this embodiment is as follows: after the inhibitor is fed through the feeding port, it is weighed by the automatic weighing part, evenly stirred by the three-dimensional mixer, and then transported to the storage bin. At the same time, the high-pressure fan is turned on. The high-pressure fan uses compressed air to provide power to transport the inhibitor in the storage bin to the spraying system through the conveying pipeline. The pneumatic rotating nozzle increases the spraying range and controls the spraying during the rotation process. The internal pneumatic pump further provides power for the inhibitor spraying in the form of compressed air, thereby effectively preventing large-scale coal spontaneous combustion.

[0068] Example 2

[0069] like Figure 2 As shown, the present embodiment provides a granular inhibitor spraying device for mining, which mainly includes a high-pressure fan 1, a box body 7, a feeding port 8, a three-dimensional mixer 9, a storage bin 11, a conveying pipeline 13, a pneumatic rotary nozzle 14, an ultrasonic vibration system 18, a self-priming chemical pump 24 and an automatic weighing unit 29.

[0070] The operating principle of the high-pressure blower 1 is as follows: after the device is started, the air inlet 2 draws in a large amount of outside air. Under the action of the power unit 5, the outside air is compressed and converted into high-pressure gas, which is the gas power source. The high-pressure gas flows through the air duct 4 to the air outlet 3. The airflow pipeline 6 is used to control the flow direction of the high-pressure gas generated by the high-pressure blower 1, so that the high-pressure gas is introduced into the lower level of the storage bin 11 through the air outlet of the airflow pipeline 6. The air outlet 3 is connected to the air inlet of the airflow pipeline 6.

[0071] The box 7 is provided with a plurality of feeding ports 8 for the convenience of the staff to add a variety of granular inhibitors. If only a single inhibitor is added, multiple feeding ports 8 can be used simultaneously to increase work efficiency.

[0072] An automatic weighing unit 29 and a three-dimensional mixer 9 (the shaded part is the second blanking port 32) are installed inside the box body 7. The feeding port 27 on the top of the automatic weighing unit 29 fits tightly with the feeding port 8. The added inhibitor falls from the feeding port 8 onto the gravity sensor 12. When each inhibitor material is weighed, the feeding port 8 automatically stops feeding. The rotating shaft 30 controls the three-dimensional mixer 9 to rise, so that the top of the three-dimensional mixer 9 and the bottom of the automatic weighing unit 29 are connected. The rotating shaft 30 drives the first partition 25 to rotate, pushing the inhibitor material to fall into the three-dimensional mixer 9 from the first blanking port 26, and then closes the blanking port on the top of the three-dimensional mixer 9; under the action of the rocker arm 10, it is shaken to mix the inhibitor material evenly. After stirring is completed, the rotating shaft 30 is used to drive the second partition 31 to rotate, and the evenly stirred inhibitor material is pushed into the second blanking port 32 at a uniform speed.

[0073] The housing 7 is designed with a storage bin 11. The inhibitor, which is dropped from the second drop-out port 32, falls onto the elevating tray 28. The third partition 33 is closed, and the high-pressure blower 1 is turned on to supply air. Simultaneously, the elevating tray 28 slowly and evenly rises, stopping when the tray is level with the inner wall of the conveying pipe 13. The conveying pipe 13 is primarily used for the transportation of granular inhibitor. The interior of the pipe is coated with a heat-insulating material to prevent the inhibitor from being affected by external environmental factors during the transfer process, which could weaken the inhibitory effect.

[0074] The pneumatic rotary nozzle 14 includes a nozzle body, a rotating shaft seat 15 and a rotating nozzle; a small pneumatic pump 16 and a catalytic material delivery channel are provided in the nozzle body; the catalytic material delivery channel is provided with a first air inlet, a first feed port and a delivery port; the catalytic material delivery channel is connected to the pneumatic pump 16 through the first air inlet; the catalytic material delivery channel is connected to the other end of the delivery pipe 13 through the first feed port, the second feed port of the rotary nozzle is connected to the delivery port of the catalytic material delivery channel, and the rotary nozzle is installed on the rotating shaft seat 15, so that the rotary nozzle can spray the catalytic material in multiple directions. The pneumatic pump 16 is used to provide power for spraying the catalytic material using compressed air; the power provided for spraying the catalytic material is used to ensure that the catalytic material is sprayed onto the surface of the high-temperature coal body at a long distance through the rotary nozzle. The spray port 17 in the rotary nozzle is designed as a shower head, which plays a role of uniform spraying.

[0075] When the retardant material enters the pneumatic rotary nozzle 14, the pneumatic pump 16 starts to work, and further provides power for spraying the retardant material through compressed air, ensuring that the retardant material can be sprayed to the high-temperature coal surface at a long distance.

[0076] The ultrasonic vibration system 18 primarily consists of a detection unit, an ultrasonic power supply 19, an ultrasonic transducer 20, and a mechanical structure (horn) 21. When the detection unit detects a blockage in the pneumatic rotary nozzle 14 or the delivery pipe 13, the ultrasonic transducer 20 activates. Due to its advantages of long-range propagation, good directionality, and concentrated energy, ultrasonic waves can be used to clear inhibitor deposits formed by long-term spraying, thereby preventing blockage in the delivery pipe 13 and the spray port 17.

[0077] The ultrasonic power supply 19 can dynamically adjust the output resonant frequency and power in real time according to the actual load; the ultrasonic transducer 20 provides energy for the crushing of inhibitor deposits by converting the input electrical power into mechanical power and then transmitting it out; the mechanical structure (amplitude transformer) 21 can concentrate the ultrasonic energy at the blockage location, facilitating effective cleaning.

[0078] The self-priming chemical pump 22 has high mechanical strength and strong corrosion resistance. It can extract broken debris formed after ultrasonic vibration. The broken debris is sucked in through the suction port 23 of the self-priming chemical pump 22 under the action of strong suction and discharged from the outlet 24 of the self-priming chemical pump 22, thereby preventing re-clogging caused by the accumulation of broken objects and facilitating the recycling and reuse of resources.

[0079] The method of using the above-mentioned spraying device to spray the granular inhibitor for mining into the coal mine is as follows: the required granular inhibitor is put into the feeding port 8, and then evenly stirred by the three-dimensional mixer 9 and flows into the storage bin 11 and the amount of the inhibitor material is controlled within the required range, and at the same time, the high-pressure blower 1 is turned on, and the high-pressure blower 1 provides power in the form of compressed air to move the inhibitor material into the transmission pipeline 13. During the transportation process, the inhibitor material continuously flows into the pneumatic rotary nozzle 14. At this time, the pneumatic pump 16 starts working and again provides power for the spraying of the inhibitor material in the form of compressed air. A rotating shaft seat 15 is installed on the top of the pneumatic rotary nozzle 14, and the spray port 17 is designed as a shower type, which can expand the spraying range and improve the uniformity of the spraying. When the pneumatic rotary nozzle 14 or the transmission pipeline 13 is blocked, the ultrasonic vibration system 18 and the self-priming chemical pump 22 can effectively clean and recover the blockage, further improving the prevention and control effect of the coal spontaneous combustion phenomenon.

[0080] Compared with the prior art, the present invention has the following advantages:

[0081] The present invention provides a device and method for spraying a granular inhibitor for mining, which mainly includes: a box body, a high-pressure fan, a conveying pipeline, a pneumatic rotary nozzle, an ultrasonic vibration system, and a self-priming chemical pump. The box body is provided with a feeding port, an automatic weighing unit, a three-dimensional mixer, and a storage bin, which are respectively fixed inside the box body; the high-pressure fan is connected to the left end of the storage bin; the conveying pipeline is connected to the right end of the storage bin; the pneumatic rotary nozzle is fixed to the bottom of the conveying pipeline; the ultrasonic vibration system and the self-priming chemical pump are fixed to the top of the conveying pipeline. This device uses the compressed air provided by the high-pressure fan and the pneumatic pump as power, and realizes the whole process of conveying and spraying solid granular inhibitors in the mine. The device is easy to operate and maintain, has high reliability, a long spraying distance, and low clogging, and can effectively prevent and control coal spontaneous combustion.

[0082] 1. The automatic weighing unit installed inside the box of the present invention can control the amount of inhibitor used, avoiding resource waste caused by excessive dosage. The three-dimensional mixer can ensure the uniform mixing of the granular inhibitor. The lifting tray can control the storage bin capacity and ensure that all the inhibitor particles are delivered to the spray port with the wind flow, without leaving any residual inhibitor material in the storage bin groove (the angle between the lifting tray and the box wall).

[0083] 2. The high-frequency waves generated by the ultrasonic vibration system of the present invention can propagate over a sufficiently long distance. Combined with a self-priming chemical pump, it can effectively solve problems such as clogging of the delivery pipeline and nozzle caused by long-term spraying of granular inhibitors.

[0084] 3. The pneumatic rotating nozzle of the present invention can spray the inhibitor to the coal surface at a long distance. The pneumatic rotating nozzle is equipped with a rotating shaft seat and the spraying port is designed as a shower, which can ensure the uniform spraying of the inhibitor in different directions.

[0085] 4. The present invention has a simple structure, is easy to use, has a good use effect, can be used for fire prevention in coal mines, is easy to install and recycle, and can be promoted and applied.

[0086] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0087] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A granular inhibitor spraying device for mining, characterized in that: include: Gas delivery section, granular inhibitor stirring and storage section, delivery pipeline, spraying system, ultrasonic vibration system and crushed material extraction system; wherein, the granular inhibitor stirring and storage section is provided with an automatic weighing unit, a granular inhibitor stirring unit and a storage bin in order from top to bottom; The automatic weighing unit is used to obtain the weight of the granular inhibitor to control the usage of the granular inhibitor entering the granular inhibitor stirring unit; The granular inhibitor stirring unit is used to stir the granular inhibitor to form an inhibitor material; The storage bin is used to store the retardant material; The gas outlet of the gas conveying portion is connected to the gas inlet of the storage bin; one end of the conveying pipeline is connected to the discharge port of the storage bin, and the spraying system is installed on the other end area of ​​the conveying pipeline; the gas conveying portion is used to provide gas power in the form of compressed air; the gas power is used to move the retardant material in the storage bin to the spraying system through the conveying pipeline; The ultrasonic vibration system and the broken object extraction system are both installed on the conveying pipeline; the ultrasonic vibration system is used to provide an ultrasonic vibration function; the ultrasonic vibration function is used to clean the inhibitor deposits inside the spraying system and / or inside the conveying pipeline; the broken object extraction system is used to extract the broken objects formed under the ultrasonic vibration function.

2. A granular inhibitor spraying device for mining according to claim 1, characterized in that: The granular inhibitor stirring and storing portion further comprises a box body; wherein the automatic weighing unit, the granular inhibitor stirring unit and the storage bin are all arranged in the box body; Several feeding ports are provided on the top of the box body, which are used to feed granular inhibitors; the granular inhibitor stirring unit includes a three-dimensional mixer and a rocker arm connected to the three-dimensional mixer; the rocker arm is used to drive the three-dimensional mixer to shake up and down to achieve uniform mixing of multiple granular inhibitors, thereby forming an inhibitory material.

3. A granular inhibitor spraying device for mining according to claim 2, characterized in that: It also includes a rotating shaft; one end of the rotating shaft is fixed to the top of the box body, and the other end of the rotating shaft passes through the automatic weighing unit and the top of the granular inhibitor stirring unit in sequence, and is fixed to the bottom of the granular inhibitor stirring unit; The rotating shaft is used to drive the automatic weighing unit and the granular inhibitor stirring unit to rotate and translate up and down.

4. A granular inhibitor spraying device for mining according to claim 3, characterized in that: The automatic weighing unit has a cylindrical cavity structure; a first drop-out port is provided at the bottom of the automatic weighing unit; the rotating shaft is provided at the center of the cylinder of the automatic weighing unit, and a plurality of first partitions rotating around the rotating shaft are provided inside the automatic weighing unit; the first partitions are used to divide the automatic weighing unit into a plurality of weighing areas; a feed port is provided at the top of the weighing area, and a gravity sensor is provided at the bottom of the weighing area.

5. A granular inhibitor spraying device for mining according to claim 3 or 4, characterized in that: The interior of the three-dimensional mixer is a cylindrical space, the rotating shaft is provided at the center of the cylindrical space, and a second partition rotating around the rotating shaft is provided in the cylindrical space; the second partition is used to divide the cylindrical space into two parts, namely a stirring space and a blanking space; a plurality of switchable feed ports are provided at the top of the stirring space, and the feed ports are used to connect to the first blanking port of the automatic weighing unit; a second blanking port is provided at the bottom of the blanking space; the second blanking port is used to transport the inhibitory material to the storage bin.

6. A granular inhibitor spraying device for mining according to claim 5, characterized in that: The storage bin includes a bin body; the bin body is a cavity structure with two ends open; a liftable tray is provided at the bottom of the bin body, and a rotatable third partition is provided at the top of the bin body; During operation, the capacity of the warehouse body is controlled by the liftable tray, and the capacity of the retardant material entering the warehouse body is controlled by the third partition, so that all the retardant materials inside the warehouse body are then transported into the conveying pipeline by the high-pressure gas flow transported by the gas conveying part.

7. The granular inhibitor spraying device for mining according to claim 1, characterized in that: The gas delivery part is a high-pressure blower; the high-pressure blower includes a power unit, an air duct and an air flow pipeline; wherein the air outlet of the air duct is connected to the air inlet of the air flow pipeline; the air outlet of the air flow pipeline is connected to the air inlet of the storage bin; During operation, the air inlet of the air duct absorbs a large amount of external air, and under the action of the power unit, compresses and converts the external air to form high-pressure gas; the high-pressure gas flows into the lower layer of the storage bin through the air duct, the air flow pipeline, and the air inlet of the storage bin in sequence.

8. The granular inhibitor spraying device for mining according to claim 1, characterized in that: The spraying system is a pneumatic rotary nozzle; the pneumatic rotary nozzle includes a nozzle body, a rotating shaft seat and a rotating nozzle; a pneumatic pump and a chemical material conveying channel are provided in the nozzle body; the chemical material conveying channel is provided with a first air inlet, a first feed port and a delivery port; the chemical material conveying channel is connected to the pneumatic pump through the first air inlet; the chemical material conveying channel is connected to the other port of the conveying pipeline through the first feed port; the rotary nozzle is provided with a second feed port; the second feed port of the rotary nozzle is connected to the delivery port of the chemical material conveying channel, and the rotary nozzle is installed on the rotating shaft seat; the pneumatic pump is used to provide power for spraying the chemical material by compressed air; the power for spraying the chemical material is used to ensure that the chemical material is sprayed onto the high-temperature coal surface at a longer distance through the rotary nozzle.

9. The granular inhibitor spraying device for mining according to claim 1, characterized in that: The ultrasonic vibration system includes a detection unit, an ultrasonic transducer and a mechanical structure; The detection unit is used to detect the blockage status of the spraying system and the delivery pipeline, and output an ultrasonic transducer start instruction when the blockage status meets a preset condition; The ultrasonic transducer is used to receive the ultrasonic transducer start-up instruction and start it, and then transmit the ultrasonic energy to the inhibitor deposit deposition area through the mechanical structure; the ultrasonic energy can crush the inhibitor deposits inside the spraying system and / or inside the conveying pipeline to form broken objects.

10. The granular inhibitor spraying device for mining according to claim 1, characterized in that: The crushed material extraction system is a self-priming chemical pump; the self-priming chemical pump is provided with a plurality of suction ports and outlets; wherein, a part of the suction ports is connected to the conveying pipeline, and another part of the suction ports is connected to the spraying system.

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