Fire preventing and extinguishing system and fire preventing and extinguishing device for coal yard

Abstract

The utility model discloses a coal yard fire preventing and extinguishing system and a coal yard fire preventing and extinguishing device. The coal yard fire preventing and extinguishing system comprises a storage device, the mixing and stirring assembly comprises a stirring bin and a stirring piece, a stirring cavity is defined in the stirring bin, the stirring bin is provided with a water inlet, a material inlet and a slurry outlet which are communicated with the stirring cavity, and a slurry outlet control valve is arranged at the slurry outlet; the stirring water supply assembly is suitable for being connected with a water source and the water inlet; the material conveying assembly is connected with the material storage device and the material inlet; the slurry spraying pump is provided with a slurry spraying inlet and a slurry spraying outlet, and the slurry spraying inlet is connected with the slurry outlet control valve; and the control device is electrically connected with the stirring piece, the slurry outlet control valve, the stirring water supply assembly, the material conveying assembly and the slurry spraying pump. According to the fire preventing and extinguishing system for the coal yard, storage, feeding, stirring and guniting are integrated, automatic proportioning feeding, stirring and guniting can be achieved, and the automation degree is high.

Description

Technical Field

[0001] This utility model relates to the field of fire prevention and extinguishing technology, and in particular to a coal yard fire prevention and extinguishing system and a coal yard fire prevention and extinguishing device having the coal yard fire prevention and extinguishing system. Background Technology

[0002] Nowadays, in places where coal is stored, such as power plants, steel mills, and ports, coal is prone to spontaneous combustion due to oxidation, which can lead to adverse effects such as reduced calorific value, environmental pollution, and fires. To solve this problem, a spraying method is generally used to form an oxygen barrier layer on the surface of the coal pile, which blocks the air leakage and oxygen supply channels, slows down the oxidation process of the coal, and thus plays a role in preventing and extinguishing fires in the coal pile.

[0003] Understandably, the aforementioned fire prevention and extinguishing work requires multiple rounds of mixing and slurry preparation to meet the spraying needs. However, in related technologies, the raw materials (water and other materials) required for slurry preparation are all manually proportioned and added, and the addition of materials usually requires the assistance of other vehicles (such as ash tank trucks or forklifts). This is not only time-consuming and labor-intensive, but also results in significant deviations in the consistency of the finished slurry due to errors in manual proportioning, leading to unsatisfactory spraying results. Summary of the Invention

[0004] This utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this utility model is to provide a coal yard fire prevention and extinguishing system that integrates material storage, feeding, mixing, and spraying, enabling automatic proportioning, feeding, mixing, and spraying with a high degree of automation.

[0005] This utility model also proposes a coal yard fire prevention and extinguishing device having the above-mentioned coal yard fire prevention and extinguishing system.

[0006] A coal yard fire prevention and extinguishing system according to a first aspect of the present invention includes: a storage device for storing materials; a mixing assembly comprising a mixing chamber and a mixing element, wherein the mixing chamber defines a mixing cavity, the mixing element is rotatably disposed within the mixing cavity, the mixing chamber is provided with a water inlet, a material inlet, and a slurry outlet communicating with the mixing cavity, and a slurry outlet is provided at the slurry outlet for controlling the opening and closing of the slurry outlet; a mixing water supply assembly adapted to be connected to a water source and the water inlet for quantitatively adding water into the mixing cavity; a material conveying assembly connected to the storage device and the material inlet for quantitatively conveying the material stored in the storage device to the mixing cavity; a slurry pump having a slurry inlet and a slurry outlet, the slurry inlet being connected to the slurry outlet control valve, and the slurry outlet being adapted to be connected to a spray gun or a grouting pipe; and a control device electrically connected to the mixing element, the slurry outlet control valve, the mixing water supply assembly, the material conveying assembly, and the slurry pump.

[0007] The coal yard fire prevention and extinguishing system according to the present invention integrates material storage, feeding, mixing and spraying, and can realize automatic proportioning, feeding, mixing and spraying. It has a high degree of automation, which can not only save manpower and improve efficiency, but also ensure the accuracy of material proportioning and the consistency of finished slurry.

[0008] In addition, the coal yard fire prevention and extinguishing system according to the embodiments of this utility model may also have the following additional technical features:

[0009] According to one embodiment of the present invention, the stirring water supply assembly includes: a stirring water supply pipe, the stirring water supply pipe including a first stirring water supply section and a second stirring water supply section connected to each other; a flow metering device, the flow metering device being connected between the first stirring water supply section and the second stirring water supply section, the end of the first stirring water supply section away from the flow metering device being adapted to be connected to the water source, and the end of the second stirring water supply section away from the flow metering device being connected to the water inlet; and a stirring water inlet control valve, the stirring water inlet control valve being disposed between the second stirring water supply section and the water inlet, the stirring water inlet control valve and the flow metering device being electrically connected to the control device.

[0010] According to one embodiment of the present invention, a backwashing interface is provided on the connecting pipeline between the slurry inlet and the slurry outlet control valve. The coal yard fire prevention and extinguishing system further includes a backwashing water supply component, which includes a backwashing water supply pipe and a backwashing water supply control valve. One end of the backwashing water supply pipe is connected to the backwashing interface, and the other end of the backwashing water supply pipe is connected to the outlet end of the backwashing water supply control valve. The inlet end of the backwashing water supply control valve is adapted to be connected to a water source, and the backwashing water supply control valve is electrically connected to the control device.

[0011] According to one embodiment of the present invention, the connecting pipeline between the slurry inlet and the slurry outlet control valve includes: a slurry outlet pipe, one end of which is connected to the slurry outlet control valve; a connecting joint, the connecting joint including a slurry outlet pipe connecting end and a slurry inlet connecting end that are connected to each other, the slurry outlet pipe connecting end being connected to the other end of the slurry outlet pipe, the slurry inlet connecting end being connected to the slurry inlet, and the backwashing interface being provided on the side peripheral wall of the slurry inlet connecting end.

[0012] According to one embodiment of the present invention, the connecting joint further includes a slurry discharge port that is connected to both the slurry outlet pipe connection end and the slurry injection inlet connection end, and the slurry discharge port is provided with a slurry discharge control valve for controlling the opening and closing of the slurry discharge port.

[0013] According to one embodiment of the present invention, the material inlet includes an A-material inlet, the storage device includes an A-material storage device for storing A-material, the material conveying assembly includes an A-material conveying assembly, the A-material conveying assembly includes: a screw conveyor having an A-material conveying inlet and an A-material conveying outlet, the A-material conveying inlet being located below and communicating with the outlet of the A-material storage device, the A-material conveying outlet being located above the mixing chamber and connected to the A-material inlet; and an A-material weighing device for detecting the weight of the A-material storage device, both the A-material weighing device and the screw conveyor being electrically connected to the control device.

[0014] According to one embodiment of the present invention, the material inlet includes a B material inlet, the storage device includes a B material storage device for storing B material, the material conveying assembly includes a B material conveying assembly, the B material conveying assembly includes: a vacuum suction machine, the vacuum suction machine includes a negative pressure vacuum pump, a vacuum hopper, a suction pipe, an extraction pipe and a B material control valve, the vacuum hopper is provided with a B material conveying inlet, a B material conveying outlet and an extraction port, the B material conveying outlet is connected to the B material inlet, the suction pipe is connected to the B material storage device and the B material conveying inlet, the extraction pipe is connected to the negative pressure vacuum pump and the extraction port, the B material control valve is used to control the opening and closing of the B material conveying outlet; a B material weighing device, the B material weighing device is located at the bottom of the B material storage device to weigh the B material storage device, the B material weighing device and the negative pressure vacuum pump are both electrically connected to the control device.

[0015] According to one embodiment of the present invention, the mixing chamber is provided with an overflow port communicating with the mixing cavity, and the coal yard fire prevention and extinguishing system further includes an overflow component, the overflow component including: an overflow pipe, one end of which is connected to the slurry outlet, and the other end of which is connected to the overflow port; a pressure relief valve, which is disposed between the overflow pipe and the overflow port; and a pressure detection device, which is used to detect the pressure at the slurry outlet, and both the pressure detection device and the pressure relief valve are electrically connected to the control device.

[0016] A coal yard fire prevention and extinguishing device according to a second aspect of the present invention includes: a motor vehicle body; and a coal yard fire prevention and extinguishing system according to the first aspect of the present invention, wherein the coal yard fire prevention and extinguishing system is disposed on the motor vehicle body.

[0017] The coal yard fire prevention and extinguishing device according to the embodiments of the present utility model, by setting up the coal yard fire prevention and extinguishing system according to the first aspect embodiment of the present utility model, enables the coal yard fire prevention and extinguishing device to have all the advantages of the coal yard fire prevention and extinguishing system of the first aspect embodiment, which will not be repeated here.

[0018] Optionally, the vehicle body is provided with a compartment, and at least a portion of the coal yard fire prevention and extinguishing system is located inside the compartment.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1This is a perspective view of a coal yard fire prevention and extinguishing device according to an embodiment of the present utility model;

[0022] Figure 2 yes Figure 1 A schematic diagram of the coal yard fire prevention and extinguishing device from another angle;

[0023] Figure 3 yes Figure 1 A schematic diagram of part of the structure of the coal yard fire prevention and extinguishing device shown;

[0024] Figure 4 yes Figure 3 The structure shown is a cross-sectional view along line AA;

[0025] Figure 5 yes Figure 1 A schematic diagram of the internal structure of the fire prevention and extinguishing device for a coal yard shown in the figure;

[0026] Figure 6 yes Figure 5 A partial structural diagram of the structure shown;

[0027] Figure 7 yes Figure 6 A partial structural diagram of the structure shown.

[0028] Figure label:

[0029] 100 coal yard fire prevention and extinguishing system;

[0030] Storage device 10; Material A storage device 11; Main body of silo 111; Inlet 1111; Outlet 1112; Vent 1113; Silo support leg 112;

[0031] Material B storage device 12;

[0032] Mixing assembly 20; mixing chamber 21; water inlet 211; material inlet 212; A material inlet 2121; B material inlet 2122; slurry outlet 213; slurry outlet control valve 2131; overflow outlet 214;

[0033] Agitator water supply assembly 30; agitator water supply pipe 31; first agitator water supply section 311; second agitator water supply section 312; flow metering device 32; agitator water inlet control valve 33; water supply control valve 34;

[0034] Backwash water supply assembly 40; backwash water supply pipe 41; backwash water supply control valve 42;

[0035] Material conveying assembly 50; Material A conveying assembly 51; Screw conveyor 511; Material A conveying inlet 5111; Material A conveying outlet 5112; Material A weighing device 512;

[0036] Material B conveying assembly 52; negative pressure vacuum pump 521; vacuum hopper 522; material B weighing device 523;

[0037] 60 shotcrete pump; 61 shotcrete inlet; 62 shotcrete outlet;

[0038] Control device 70;

[0039] Overflow assembly 80; Overflow pipe 81; Pressure relief valve 82;

[0040] Connecting pipe 90; slurry outlet pipe 91; connecting joint 92; slurry outlet pipe connection end 921; slurry inlet connection end 922; backwashing interface 9221; slurry discharge port 923; slurry discharge control valve 9231;

[0041] Main water supply pipe 101; main water supply tee pipe 102; slurry transmission pipe 103; shotcrete control valve 104;

[0042] 200 Fire prevention and extinguishing devices for coal yards; 201 Motor vehicle body; 202 Box body. Detailed Implementation

[0043] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0044] The following is for reference. Figures 1-7 Description of a coal yard fire prevention and extinguishing device 200 according to an embodiment of the present utility model.

[0045] Please see Figures 1-5 The coal yard fire prevention and extinguishing device 200 may include a vehicle body 201, a cargo box 202, and a coal yard fire prevention and extinguishing system 100. The cargo box 202 is mounted on the vehicle body 201, and the coal yard fire prevention and extinguishing system 100 is mounted on the vehicle body 201, with at least a portion of the system located within the cargo box 202. The coal yard fire prevention and extinguishing system 100 includes: a material storage device 10 for storing materials, a mixing assembly 20, a mixing and water supply assembly 30, a material conveying assembly 50, a shotcrete pump 60, and a control device 70.

[0046] The mixing assembly 20 includes a mixing chamber 21 and a mixing element. The mixing chamber 21 defines a mixing cavity, and the mixing element is rotatably disposed in the mixing cavity. The mixing chamber 21 is provided with a water inlet 211, a material inlet 212 and a slurry outlet 213 communicating with the mixing cavity. A slurry outlet control valve 2131 is provided at the slurry outlet 213 for controlling the opening and closing of the slurry outlet 213.

[0047] The water inlet 211 is used to add water into the mixing chamber, the material inlet 212 is used to add materials into the mixing chamber, the agitator is used to agitate the materials for pulping, and the slurry outlet 213 is used to discharge the pulp from the mixing chamber. The slurry outlet control valve 2131 is used to control the opening and closing of the slurry outlet 213. During material addition and pulping, the slurry outlet control valve 2131 is in the closed state; when the pulping is completed and spraying is performed, the slurry outlet control valve 2131 can be opened so that the slurry in the mixing chamber can be discharged through the slurry outlet 213.

[0048] The mixing and water supply assembly 30 is adapted to connect a water source and an inlet 211 for metering water supply into the mixing chamber. In other words, the mixing and water supply assembly 30 is used to meterly deliver water from the water source into the mixing chamber. It should be noted that the "water source" mentioned in this application can be arbitrarily selected according to actual needs. For example, the water source can be fire-fighting water for the fire prevention and extinguishing operation area. By using fire-fighting water for the fire prevention and extinguishing operation area as the water source, water can be directly obtained at the spraying site, which is convenient and efficient, and helps improve the efficiency of fire prevention and extinguishing spraying operations. Of course, this application is not limited to this; the water source can also be filtered rinsing water, etc.

[0049] The material conveying assembly 50 connects the storage device 10 and the material inlet 212 to quantitatively convey the material stored in the storage device 10 into the mixing chamber. In other words, the material conveying assembly 50 can automatically add the required materials for pulping into the mixing chamber in a quantitative manner. This eliminates the need for manual material proportioning and the use of other vehicles (such as ash tank trucks or forklifts) for material addition, thereby saving labor and resulting in better consistency of the finished pulp.

[0050] The material inlet 212 may include only one or multiple inlets. For example, when the slurry required for spraying is a multi-component slurry, such as when the slurry components include component A and component B, the material inlet 212 may include component A inlet 2121 for adding component A and component B inlet 2122 for adding component B. Component A and component B can be arbitrarily selected according to actual needs. In the following description of this application, component A is powdered fly ash, and component B is a powdered flame-retardant chemical composite material (powdered material) as an example for illustrative purposes. However, it is understood that this application is not limited to this; in some other embodiments, component A may also be a powdered material such as stone powder or bentonite, and component B may also be a liquid flame-retardant material (liquidized material).

[0051] Understandably, when the material inlet 212 includes the aforementioned material A inlet 2121 for adding material A and material B inlet 2122 for adding material B, the corresponding material storage device 10 includes a material A storage device 11 for storing material A and a material B storage device 12 for storing material B; the material conveying assembly 50 includes a material A conveying assembly 51 for quantitatively conveying material A stored in the material A storage device 11 to the mixing chamber and a material B conveying assembly 52 for quantitatively conveying material B stored in the material B storage device 12 to the mixing chamber.

[0052] Of course, in some other embodiments, material inlet 212 may only include material A inlet 2121 or material B inlet 2122 as described above. When material inlet 212 only includes material A inlet 2121, storage device 10 only includes material A storage device 11, and material conveying assembly 50 only includes material A conveying assembly 51; when material inlet 212 only includes material B inlet 2122, storage device 10 only includes material B storage device 12, and material conveying assembly 50 only includes material B conveying assembly 52.

[0053] The shotcrete pump 60 has a shotcrete inlet 61 and a shotcrete outlet 62. The shotcrete inlet 61 is connected to a slurry control valve 2131, and the shotcrete outlet 62 is suitable for connecting a spray gun or a grouting pipe. That is, the shotcrete inlet 61 is connected to the slurry outlet 213 through the slurry control valve 2131. When the slurry control valve 2131 is open, the slurry in the mixing chamber can be conveyed towards the shotcrete inlet 61 through the slurry outlet 213. Then, driven by the shotcrete pump 60, the slurry is pumped from the shotcrete inlet 61 towards the shotcrete outlet 62, and then sprayed onto the surface of the coal pile through the spray gun or injected into the coal pile through the grouting pipe, thereby achieving fire prevention and extinguishing of the coal pile.

[0054] The control device 70 is electrically connected to the mixing components, the slurry discharge control valve 2131, the mixing water supply assembly 30, the material conveying assembly 50, and the shotcrete pump 60. This allows the control device 70 to control the automatic start and stop of the mixing components, the automatic opening and closing of the slurry discharge control valve 2131, the automatic metered water supply from the mixing water supply assembly 30 to the mixing chamber, the automatic metered material conveying from the material conveying assembly 50 to the mixing chamber, and the automatic start and stop of the shotcrete pump 60. This enables the coal yard fire prevention and extinguishing system 100 to achieve automated operation of automatic metered water addition, automatic metered material addition, automatic mixing and slurry preparation, and automatic shotcrete application. During this process, no manual proportioning or addition of slurry raw materials is required, nor is the use of other vehicles (such as ash tank trucks or forklifts) necessary. This not only saves manpower and improves efficiency but also ensures the accuracy of material proportioning and the consistency of the finished slurry.

[0055] Specifically, the control device 70 controls the mixing and water supply assembly 30 to add a set amount of water into the mixing chamber, and controls the material conveying assembly 50 to add a set amount of material into the mixing chamber. After the water and material are added, the control device 70 controls the mixing component to mix the water and material added to the mixing chamber to form the slurry required for spraying. After the mixing is completed, the control device 70 controls the slurry outlet control valve 2131 and the spraying pump 60 to open for spraying or grouting.

[0056] Optionally, the amount of material that can be stored in the storage device 10 can meet the needs of multiple pulping processes. In this way, after one material is taken from the silo, the needs of multiple pulping processes can be met, without the need to frequently return to the silo (e.g., fly ash silo) to retrieve material.

[0057] By incorporating a vehicle body 201 into the coal yard fire prevention and extinguishing device 200, and housing the coal yard fire prevention and extinguishing system 100 within the vehicle body 201, the coal yard fire prevention and extinguishing device 200 can be freely moved during material addition, slurry preparation, and spraying processes. For example, when fly ash needs to be added, the coal yard fire prevention and extinguishing device 200 can be driven to the ash silo to collect the ash, and then driven to the spraying site for slurry preparation and spraying. Therefore, the coal yard fire prevention and extinguishing device 200 is highly flexible and convenient to use, thereby improving work efficiency and significantly shortening the spraying pipeline, thus saving costs.

[0058] In addition, by setting up the compartment 202 and ensuring that at least a portion of the coal yard fire prevention and extinguishing system 100 is located inside the compartment 202, the coal yard fire prevention and extinguishing system 100 can be protected and kept warm.

[0059] Of course, this application is not limited to this. In some other embodiments, the coal yard fire prevention and extinguishing device 200 may not include the aforementioned compartment 202.

[0060] In some other embodiments, the coal yard fire prevention and extinguishing device 200 may not include the aforementioned motor vehicle body 201.

[0061] The coal yard fire prevention and extinguishing system 100 according to this utility model integrates material storage, feeding, mixing and spraying, and can realize automatic proportioning, feeding, mixing and spraying. It has a high degree of automation, which can not only save manpower and improve efficiency, but also ensure the accuracy of material proportioning and ensure the consistency of the finished slurry.

[0062] In one embodiment of this utility model, please refer to Figures 5-6The material inlet 212 includes an A-material inlet 2121. The storage device 10 includes an A-material storage device 11 for storing A-material. The material conveying assembly 50 includes an A-material conveying assembly 51, which includes a screw conveyor 511 and an A-material weighing device 512. The screw conveyor 511 has an A-material conveying inlet 5111 and an A-material conveying outlet 5112. The A-material conveying inlet 5111 is located below and connected to the outlet 1112 of the A-material storage device 11. The A-material conveying outlet 5112 is located above the mixing chamber 21 and connected to the A-material inlet 2121. The A-material weighing device 512 is used to detect the weight of the A-material storage device 11. Both the A-material weighing device 512 and the screw conveyor 511 are electrically connected to the control device 70. The control device 70 controls the start and stop of the screw conveyor 511 based on the weight detected by the A-material weighing device 512. Specifically, when the change in weight detected by the A-material weighing device 512 reaches the amount of A-material required for one pulping cycle, the control device 70 controls the screw conveyor 511 to shut down, thereby completing the addition of A-material. Optionally, the A-material weighing device 512 can be a weighing sensor.

[0063] Please continue reading. Figures 4-5 The material A storage device 11 can be a storage silo, comprising a silo body 111 and silo support legs 112. The silo body 111 defines a material A storage cavity for storing material A. An inlet 1111 and an outlet 1112 are respectively located on the top and bottom walls of the silo body 111. The silo support legs 112 support the silo body 111, and a material A weighing device 512 is located at the bottom of the silo support legs 112. An exhaust vent 1113 is provided on the top wall of the silo body 111. When adding fly ash into the silo, the exhaust vent 1113 can balance the air pressure inside and outside the silo, preventing the generation of large amounts of dust at the inlet 1111 during fly ash addition. The material A storage device 11 can have an overload alarm function to prevent overfilling and overflow, thus preventing environmental pollution.

[0064] Optionally, the storage silo is equipped with a silo wall vibrator (not shown) to drive the fly ash in the silo through the discharge port 1112 into the screw conveyor 511, thereby preventing the fly ash from being obstructed or agglomerated. The silo wall vibrator can be an electric vibrator or a pneumatic air hammer. The silo wall vibrator is electrically connected to the screw conveyor 511. When the screw conveyor 511 starts, the silo wall vibrator also starts; when the screw conveyor 511 stops, the silo wall vibrator also stops. That is to say, the silo wall vibrator and the screw conveyor 511 are linked.

[0065] As can be seen from the above embodiments, the screw conveyor 511 and the A-material weighing device 512 work together to achieve quantitative ash addition. Of course, this application is not limited to this; in other embodiments, it can be achieved by pneumatic conveying and the A-material weighing device 512 working together.

[0066] In one embodiment of the utility model, the material inlet 212 includes a B material inlet 2122, the storage device 10 includes a B material storage device 12 for storing B material, and the material conveying assembly 50 includes a B material conveying assembly 52, which includes a vacuum feeder and a B material weighing device 523. The vacuum feeder includes a negative pressure vacuum pump 521, a vacuum hopper 522, a suction pipe (not shown), an extraction pipe (not shown), and a B material control valve. The vacuum hopper 522 is provided with a B material conveying inlet, a B material conveying outlet, and an extraction port. The B material conveying outlet is connected to the B material inlet 2122. The suction pipe connects the B material storage device 12 and the B material conveying inlet. The extraction pipe connects the negative pressure vacuum pump 521 and the extraction port. The B material control valve is used to control the opening and closing of the B material conveying outlet. The material B weighing device 523 is located at the bottom of the material B storage device 12 to weigh the material B storage device 12. The material B weighing device 523 is electrically connected to the negative pressure vacuum pump 521. The control device 70 controls the start and stop of the negative pressure vacuum pump 521 based on the signal fed back by the material B weighing device 523. For example, when the control device 70 receives feedback from the material B weighing device 523 that the change in the weight of the material B storage device 12 reaches the set requirement, the control device 70 controls the negative pressure vacuum pump 521 to shut down. Optionally, the material B weighing device 523 can be a subtraction scale.

[0067] The negative pressure vacuum pump 521 draws air through the air extraction pipe, so that the B material conveying inlet is in a negative pressure state. In this way, the B material stored in the B material storage device 12 is sucked into the vacuum silo 522 through the suction pipe. In the vacuum silo 522, the gas and material are separated. The separated material (B material) enters the mixing chamber through the B material conveying outlet.

[0068] The B material control valve may include a counterweight and a blocking plate. When the negative pressure vacuum pump 521 is working, the counterweight drives the blocking plate to block the B material delivery outlet, creating a vacuum in the vacuum silo 522. The B material stored in the B material storage device 12 is sucked into the vacuum silo 522 through the suction pipe. When the weight change of the B material storage device 12 fed back by the B material weighing device 523 reaches the set requirement, the control device 70 controls the negative pressure vacuum pump 521 to shut down. At this time, the B material sucked into the vacuum silo 522 drives the blocking plate to open the B material delivery outlet through its own gravity. The B material in the vacuum silo 522 will enter the mixing chamber in sequence through the B material delivery outlet and the B material inlet 2122, thereby realizing the quantitative addition of B material in the mixing chamber.

[0069] Of course, this application is not limited to this. For example, in some other embodiments, the B material conveying assembly 52 may also include an air amplifier, an air compressor, a B material control valve, and a B material weighing device 523. The air amplifier has a B material inlet end, a B material outlet end, and an ejector end. The air compressor is connected to the ejector end to deliver high-pressure ejector gas toward the air amplifier. The B material inlet end is connected to the B material storage device 12, and the B material outlet end is connected to the B material inlet 2122. That is, the B material outlet end is connected to the B material inlet 2122. Under the ejection action of the high-pressure ejector gas, the air amplifier can drive the B material in the B material storage device 12 to enter the air amplifier from the B material inlet end and flow out of the air amplifier through the B material outlet end. The B material flowing out from the B material outlet end can enter the mixing chamber through the B material inlet 2122.

[0070] The B-material control valve is located between the B-material inlet and the B-material storage device 12 to control the connection between the B-material inlet and the B-material storage device 12. Optionally, the B-material control valve is located at the outlet of the B-material storage device 12 to control the opening and closing of the outlet of the B-material storage device 12, thereby controlling the connection between the B-material inlet and the B-material storage device 12. The B-material weighing device 523 is located at the bottom of the B-material storage device 12 to weigh the weight of the B-material storage device 12. The B-material weighing device 523, the air compressor, and the B-material control valve are all electrically connected to the control device 70 of the coal yard fire prevention and extinguishing device 200. The control device 70 controls the opening and closing of the air compressor and the B-material control valve based on the change in the weight of the B-material storage device 12 fed back by the B-material weighing device 523.

[0071] Optionally, when the change in weight of the B material storage device 12, as fed back by the B material weighing device 523, reaches the set required amount, the control device 70 can first control the B material control valve to close, and then, after a certain delay (e.g., 10s or 15s), control the air compressor to shut down, thereby disconnecting the supply of high-pressure ejector gas to the air amplifier. When the change in weight of the B material storage device 12, as fed back by the B material weighing device 523, meets the pulping requirements, the B material control valve is immediately closed, thus preventing excess B material from entering the pipeline. Additionally, the delayed shutdown of the air compressor by the control device 70 prevents material accumulation in the pipeline. By combining these two methods, the proportioning accuracy between the pulping material components can be better guaranteed, ensuring the optimal fire-fighting performance of the sprayed slurry.

[0072] In the above embodiments, the quantitative addition of material B in the mixing chamber is achieved through the cooperation of the air amplifier, air compressor, material B control valve and material B weighing device. Furthermore, material B is added gradually during the addition process, which reduces the risk of material B agglomeration and makes the material mixing more uniform during the pulping process.

[0073] In some other embodiments, the B material conveying assembly 52 may also use a screw conveyor (e.g., a soft screw conveyor) to convey the B material stored in the B material storage device 12 to the mixing chamber.

[0074] When material B is a liquid, the material B conveying assembly 52 further includes a liquid conveying pump, a flow meter, and a control valve, which work together to achieve quantitative addition of liquid material B. Alternatively, in some embodiments, the material B conveying assembly 52 also includes a metering pump, which is used to achieve quantitative addition of liquid material B.

[0075] In one embodiment of this utility model, the stirring water supply assembly 30 includes: a stirring water supply pipe 31, a flow metering device 32, and a stirring water inlet control valve 33. The stirring water supply pipe 31 includes a first stirring water supply section 311 and a second stirring water supply section 312 connected to each other. The flow metering device 32 is connected between the first stirring water supply section 311 and the second stirring water supply section 312. The end of the first stirring water supply section 311 furthest from the flow metering device 32 is adapted to connect to a water source. The end of the second stirring water supply section 312 furthest from the flow metering device 32 is connected to an inlet 211. The stirring water inlet control valve 33 is located between the second stirring water supply section 312 and the inlet 211. That is, the second stirring water supply section 312 is connected to the inlet 211 through the stirring water inlet control valve 33. Both the stirring water inlet control valve 33 and the flow metering device 32 are electrically connected to the control device 70. The control device 70 controls the opening and closing of the stirring water inlet control valve 33 according to the flow rate detected by the flow metering device 32. Optionally, the flow metering device 32 can be a flow meter.

[0076] When water is needed for pulping in the mixing chamber, the control device 70 controls the mixing water inlet control valve 33 to open. Water from the water source then sequentially enters the mixing chamber through the first mixing water supply section 311, the flow metering device 32, the second mixing water supply section 312, and the mixing water inlet control valve 33. During the water addition process, the flow metering device 32 measures the amount of water added to the mixing chamber. When the flow rate detected by the flow metering device 32 reaches the required amount, the control device 70 controls the mixing water inlet control valve 33 to close based on the flow signal fed back from the flow metering device 32, thereby achieving a quantitative water addition to the mixing chamber.

[0077] Optionally, please refer to Figures 6-7 The mixing and water supply assembly 30 also includes a water supply control valve 34. The inlet end of the water supply control valve 34 is adapted to connect to a water source, and the outlet end of the water supply control valve 34 is connected to the end of the first mixing and water supply section 311 furthest from the flow metering device 32. In other words, the connection between the water source and the first mixing and water supply section 311 is controlled by the water supply control valve 34. The water supply control valve 34 can be a manually controlled ball valve, which is simple in structure, easy to operate, and low in cost.

[0078] When water supply is not required, the water supply control valve 34 is in the closed state. When water supply is required, the inlet end of the water supply control valve 34 is first connected to a water source pipeline (such as a fire water pipe), and then the water supply control valve 34 is opened to supply water. After the water supply is completed, the water supply control valve 34 is closed, and then the connection between the water source pipeline (such as a fire water pipe) and the water supply control valve 34 can be disconnected. The coal yard fire prevention and extinguishing device 200 can then automatically move to perform shotcrete operations. By using fire-fighting water from the fire prevention and extinguishing operation area as the water source, water can be directly obtained at the shotcrete site, making water collection convenient and efficient.

[0079] Understandably, the coal yard fire prevention and extinguishing device 200 needs to undergo multiple rounds of mixing and slurry preparation and spraying during fire prevention and extinguishing operations. Due to the viscous and easily solidified characteristics of the slurry, the equipment is usually flushed promptly after spraying to prevent residual slurry from solidifying and clogging the pipes. However, in the existing technology, during flushing operations, flushing water is added through the inlet 211 of the mixing chamber 21 to flush the equipment. This method has a weak flushing force on the connecting pipe 90 between the slurry outlet control valve 2131 and the spraying inlet 61, resulting in insufficient flushing of residual slurry in this part of the pipe and a high frequency of clogging in this part of the pipe.

[0080] To address the aforementioned issues, in one embodiment of this application, please refer to... Figures 6-7 The connecting pipe 90 between the shotcrete inlet 61 and the slurry outlet control valve 2131 is equipped with a backwash interface 9221. The coal yard fire prevention and extinguishing system 100 also includes a backwash water supply component 40. The backwash water supply component 40 includes a backwash water supply pipe 41 and a backwash water supply control valve 42. One end of the backwash water supply pipe 41 is connected to the backwash interface 9221, and the other end of the backwash water supply pipe 41 is connected to the outlet end of the backwash water supply control valve 42. The inlet end of the backwash water supply control valve 42 is suitable for connecting to a water source. The backwash water supply control valve 42 is electrically connected to the control device 70.

[0081] It should be noted that the "water source" used to provide rinsing water in this application (i.e., the "water source" connected to the backwash water supply component 40) can be the same as the "water source" used to provide water for mixing and pulping as described above (i.e., the "water source" connected to the mixing water supply component 30), thus facilitating water supply at the work site and eliminating the need to prepare two different water supply pipelines. Of course, this application is not limited to this; the "water source" used to provide rinsing water and the "water source" used to provide water for mixing and pulping can also be different.

[0082] By placing the backwash port 9221 on the connecting pipe 90 between the slurry inlet 61 and the slurry outlet control valve 2131, the backwash water supply assembly 40 delivers flushing water quantitatively or periodically from the downstream side of the slurry outlet 213 into the mixing chamber. This method of flushing by supplying water in reverse from the downstream side of the slurry outlet 213 into the mixing chamber results in a high flushing pressure in the connecting pipe 90 between the slurry outlet control valve 2131 and the slurry inlet 61, leading to a more thorough flushing of residual slurry in this part of the pipe and thus reducing the frequency of clogging in this part of the pipe.

[0083] The backwash water supply control valve 42 is electrically connected to the control device 70, which controls the opening and closing of the backwash water supply control valve 42. The backwash water supply assembly 40 may also include a timing device to measure the duration the backwash water supply control valve 42 is open. The timing device is electrically connected to the control device 70, allowing the control device 70 to control the opening and closing of the backwash water supply control valve 42 based on whether the time signal fed back by the timing device has reached the set duration. Alternatively, the backwash water supply assembly 40 may also include a flow meter to detect the flow rate of water passing through the backwash water supply pipe 41. The flow meter is electrically connected to the control device 70, allowing the control device 70 to control the opening and closing of the backwash water supply control valve 42 based on whether the flow signal detected by the flow meter has reached the set flow rate.

[0084] In one embodiment of this application, please refer to Figures 6-7 The connecting pipe 90 between the shotcrete inlet 61 and the shotcrete control valve 2131 includes a shotcrete pipe 91 and a connecting joint 92. One end of the shotcrete pipe 91 is connected to the shotcrete control valve 2131. The connecting joint 92 includes a shotcrete pipe connection end 921 and a shotcrete inlet connection end 922, which are connected to each other. The shotcrete pipe connection end 921 is connected to the other end of the shotcrete pipe 91. The shotcrete inlet connection end 922 is connected to the shotcrete inlet 61. A backwashing interface 9221 is located on the side wall of the shotcrete inlet connection end 922. By locating the backwashing interface 9221 on the side wall of the shotcrete inlet connection end 922, the connecting pipe 90 between the shotcrete control valve 2131 and the shotcrete inlet 61 is flushed more thoroughly.

[0085] Optionally, please refer to Figure 7 The connecting joint 92 also includes a slurry discharge port 923 that communicates with both the slurry outlet pipe connection end 921 and the slurry inlet connection end 922. The slurry discharge port 923 is equipped with a slurry discharge control valve 9231. By providing the slurry discharge port 923, in the event of a malfunction of the slurry pump 60, the slurry discharge control valve 9231 can be opened to promptly discharge the slurry from the mixing chamber and the slurry outlet pipe 91, preventing the slurry from solidifying within the device. Optionally, the slurry discharge control valve 9231 can be a manually controlled ball valve, which is simple to operate and low in cost.

[0086] Furthermore, a slurry discharge port 923 communicating with the mixing chamber can also be provided on the mixing chamber 21. This slurry discharge port 923 is also equipped with a slurry discharge control valve 9231 for controlling its opening and closing. Optionally, the slurry discharge port 923 can be located on the bottom wall of the mixing chamber 21. By providing a slurry discharge port 923 on the mixing chamber 21, and by opening the corresponding slurry discharge control valve 9231, the slurry in the mixing chamber 21 can be directly discharged through the slurry discharge port 923, without needing to go through the slurry discharge control valve 2131 and the slurry discharge pipe 91. This not only allows for more timely discharge of the slurry in the mixing chamber 21, but also avoids the slurry not being discharged in a timely manner due to a malfunction in the slurry discharge control valve 2131.

[0087] Optionally, the mixing chamber 21 is provided with a slurry discharge port 923, and the connecting joint 92 is also provided with a slurry discharge port 923. This provides more slurry discharge paths and faster discharge efficiency, while also preventing the slurry from not being discharged in time due to a malfunction of the slurry control valve 2131.

[0088] Of course, this application is not limited to this. In some other embodiments, the slurry discharge port 923 may be formed only on the mixing chamber 21, and the slurry discharge port 923 may not be provided on the connection joint 92.

[0089] In one embodiment of this utility model, please refer to Figure 7 The coal yard fire prevention and extinguishing system 100 also includes a main water supply pipe 101. One end of the main water supply pipe 101 is adapted to connect to a water source, and the other end of the main water supply pipe 101 is connected to both the backwash water supply control valve 42 and the end of the first mixing water supply section 311 furthest from the flow metering device 32. That is, the other end of the main water supply pipe 101 is connected to the backwash water supply control valve 42, so that the backwash water supply control valve 42 and the water source are connected through the main water supply pipe 101; the other end of the main water supply pipe 101 is also connected to the end of the first mixing water supply section 311 furthest from the flow metering device 32, so that the water source and the first mixing water supply section 311 are also connected through the main water supply pipe 101. In other words, the water source can be split into two streams after passing through the main water supply pipe 101. One stream flows to the mixing water supply pipe 31, and the other stream flows to the backwash water supply pipe 41. In this way, the water source can simultaneously supply water to the mixing water supply pipe 31 and the backwash water supply pipe 41 through the main water supply pipe 101, thereby simplifying the overall pipeline connection of the coal yard fire prevention and extinguishing device 200, facilitating maintenance, and reducing costs.

[0090] Optionally, please refer to Figure 7The other end of the main water supply pipe 101 is connected to the backwash water supply control valve 42 and the end of the first stirring water supply section 311 away from the flow metering device 32 through the main water supply tee pipe 102, which can further simplify the connection between the pipelines.

[0091] Based on the above embodiments, the outlet end of the water supply control valve 34 described in the above embodiments is connected to one end of the main water supply pipe 101. When water needs to be supplied to the stirring water supply pipe 31 or the backwash water supply pipe 41, first connect the water supply pipe to the inlet end of the water supply control valve 34, and then open the water supply control valve 34; when neither the stirring water supply pipe 31 nor the backwash water supply pipe 41 needs to be supplied with water, close the water supply control valve 34, and after closing the water supply control valve 34, the connection between the water supply pipe and the inlet end of the water supply control valve 34 can be disconnected.

[0092] In one embodiment of this utility model, the mixing chamber 21 is provided with an overflow port 214 communicating with the mixing chamber. The coal yard fire prevention and extinguishing system 100 also includes an overflow assembly 80, which includes an overflow pipe 81, a pressure relief valve 82, and a pressure detection device (not shown in the figure). One end of the overflow pipe 81 is connected to the slurry outlet 62, and the other end of the overflow pipe 81 is connected to the overflow port 214. The pressure relief valve 82 is located between the overflow pipe 81 and the overflow port 214. That is, the slurry outlet 62 and the overflow port 214 are connected through the overflow pipe 81, and the pressure relief valve 82 is located between the overflow port 214 and the overflow pipe 81 to control the opening and closing of the overflow port 214 and the overflow pipe 81. The pressure detection device is used to detect the pressure at the slurry outlet 62. The pressure detection device is electrically connected to the pressure relief valve 82 to control the opening and closing of the pressure relief valve 82 according to the pressure value detected by the pressure detection device. Specifically, when the pressure value detected by the pressure detection device exceeds the set pressure value, the control device 70 controls the pressure relief valve 82 to open for pressure relief. Specifically, when the pressure value detected by the pressure detection device exceeds the set pressure value, the pressure relief valve 82 opens, thereby connecting the slurry outlet 62 to the mixing chamber through the overflow pipe 81, and transporting the slurry at the slurry outlet 62 back into the mixing chamber, thus achieving pipeline pressure relief. By setting the overflow component 80, pressure can be relieved in a timely manner when the pipeline is blocked, avoiding the risk of pipe bursting. Optionally, the pressure detection device can be a pressure sensor.

[0093] Please see Figures 6-7The coal yard fire prevention and extinguishing system 100 also includes a slurry transmission pipe 103. One end of the slurry transmission pipe 103 is connected to a slurry outlet 62, and the other end of the slurry transmission pipe 103 is adapted to be connected to a spray gun (not shown) or a grouting pipe (not shown). When the other end of the slurry transmission pipe 103 is connected to a spray gun, the slurry at the spray outlet 62 is transported to the spray gun through the slurry transmission pipe 103, and then sprayed onto the surface of the coal pile by the spray gun. When the other end of the slurry transmission pipe 103 is connected to a grouting pipe, the slurry at the spray outlet 62 is transported to the grouting pipe located at the coal pile through the slurry transmission pipe 103, thereby injecting the slurry into the interior of the coal pile.

[0094] Alternatively, please continue reading Figure 6 A grouting control valve 104 is provided at the end of the grouting transmission pipe 103 furthest from the grouting outlet 62. The grouting control valve 104 is suitable for connecting to a spray gun or grouting pipe. That is, the grouting transmission pipe 103 is connected to the spray gun or grouting pipe through the grouting control valve 104. In this way, the on / off connection between the grouting outlet 62 and the spray gun, or between the grouting outlet 62 and the grouting pipe, can be controlled by the grouting control valve 104. The grouting control valve 104 can be a manually controlled ball valve, which is simple in structure and low in cost. The shape of the nozzle of the spray gun can be arbitrarily selected according to actual needs, such as a jet nozzle or an umbrella nozzle.

[0095] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0096] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0097] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0098] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A coal yard fire prevention and extinguishing system, characterized in that, include: Storage devices for storing materials; A mixing assembly, comprising a mixing chamber and a mixing element, wherein a mixing cavity is defined within the mixing chamber, and the mixing element is rotatably disposed within the mixing cavity; the mixing chamber is provided with a water inlet, a material inlet, and a slurry outlet communicating with the mixing cavity; and a slurry outlet control valve is provided at the slurry outlet for controlling the opening and closing of the slurry outlet. A stirring and water supply assembly, the stirring and water supply assembly being adapted to connect a water source and the water inlet for metering water to be added into the stirring chamber; A material conveying assembly, which connects the storage device and the material inlet for quantitatively conveying the material stored in the storage device to the mixing chamber; A shotcrete pump having a shotcrete inlet and a shotcrete outlet, the shotcrete inlet being connected to the slurry outlet control valve, and the shotcrete outlet being adapted to be connected to a spray gun or a grouting pipe; The control device is electrically connected to the agitator, the slurry discharge control valve, the agitator water supply assembly, the material conveying assembly, and the shotcrete pump.

2. The coal yard fire prevention and extinguishing system according to claim 1, characterized in that, The stirring water supply assembly includes: A stirring water supply pipe, wherein the stirring water supply pipe includes a first stirring water supply section and a second stirring water supply section connected to each other; A flow metering device is connected between the first stirring water supply section and the second stirring water supply section. The end of the first stirring water supply section away from the flow metering device is adapted to be connected to the water source, and the end of the second stirring water supply section away from the flow metering device is connected to the water inlet. A stirring water inlet control valve is provided between the second stirring water supply section and the water inlet. Both the stirring water inlet control valve and the flow metering device are electrically connected to the control device.

3. The coal yard fire prevention and extinguishing system according to claim 1 or 2, characterized in that, A backwashing interface is provided on the connecting pipeline between the slurry inlet and the slurry outlet control valve. The coal yard fire prevention and extinguishing system also includes a backwashing water supply assembly, which includes a backwashing water supply pipe and a backwashing water supply control valve. One end of the backwashing water supply pipe is connected to the backwashing interface, and the other end of the backwashing water supply pipe is connected to the outlet end of the backwashing water supply control valve. The inlet end of the backwashing water supply control valve is adapted to be connected to a water source, and the backwashing water supply control valve is electrically connected to the control device.

4. The coal yard fire prevention and extinguishing system according to claim 3, characterized in that, The connecting pipeline between the shotcrete inlet and the slurry outlet control valve includes: A slurry outlet pipe, one end of which is connected to the slurry outlet control valve; The connecting joint includes a slurry outlet pipe connecting end and a slurry inlet connecting end that are connected to each other. The slurry outlet pipe connecting end is connected to the other end of the slurry outlet pipe, and the slurry inlet connecting end is connected to the slurry inlet. The backwashing interface is located on the side wall of the slurry inlet connecting end.

5. The coal yard fire prevention and extinguishing system according to claim 4, characterized in that, The connection joint also includes a slurry discharge port that is connected to both the slurry outlet pipe connection end and the slurry inlet connection end, and the slurry discharge port is provided with a slurry discharge control valve for controlling the opening and closing of the slurry discharge port.

6. The coal yard fire prevention and extinguishing system according to claim 1, characterized in that, The material inlet includes an A-material inlet; the storage device includes an A-material storage device for storing A-material; the material conveying assembly includes an A-material conveying assembly, which includes: A screw conveyor, the screw conveyor having an A-material conveying inlet and an A-material conveying outlet, the A-material conveying inlet being located below and connected to the discharge port of the A-material storage device, and the A-material conveying outlet being located above the mixing chamber and connected to the A-material inlet; The material A weighing device is used to detect the weight of the material A storage device. Both the material A weighing device and the screw conveyor are electrically connected to the control device.

7. The coal yard fire prevention and extinguishing system according to claim 1 or 6, characterized in that, The material inlet includes a B material inlet, the storage device includes a B material storage device for storing B material, and the material conveying assembly includes a B material conveying assembly, which includes: A vacuum material feeder includes a negative pressure vacuum pump, a vacuum hopper, a suction pipe, an air extraction pipe, and a B-material control valve. The vacuum hopper is provided with a B-material conveying inlet, a B-material conveying outlet, and an air extraction port. The B-material conveying outlet is connected to the B-material inlet. The suction pipe is connected to the B-material storage device and the B-material conveying inlet. The air extraction pipe is connected to the negative pressure vacuum pump and the air extraction port. The B-material control valve is used to control the opening and closing of the B-material conveying outlet. The material B weighing device is located at the bottom of the material B storage device to weigh the material B storage device. Both the material B weighing device and the negative pressure vacuum pump are electrically connected to the control device.

8. The coal yard fire prevention and extinguishing system according to claim 1, characterized in that, The mixing chamber is provided with an overflow port communicating with the mixing cavity, and the coal yard fire prevention and extinguishing system further includes an overflow component, which includes: An overflow pipe, one end of which is connected to the shotcrete outlet, and the other end of which is connected to the overflow port; A pressure relief valve is provided between the overflow pipe and the overflow port; A pressure detection device is provided to detect the pressure at the spray outlet. Both the pressure detection device and the pressure relief valve are electrically connected to the control device.

9. A fire prevention and extinguishing device for coal yards, characterized in that, include: Motor vehicle body; The coal yard fire prevention and extinguishing system according to any one of claims 1-8 is installed on the vehicle body.

10. The coal yard fire prevention and extinguishing device according to claim 9, characterized in that, The vehicle body is equipped with a compartment, and at least a portion of the coal yard fire prevention and extinguishing system is located inside the compartment.

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