Slurry conveying assembly and fire preventing and extinguishing device for coal yard

Abstract

The utility model discloses a slurry conveying assembly and a coal yard fire preventing and extinguishing device, the slurry conveying assembly comprises a slurry conveying pipe, one end of the slurry conveying pipe is suitable for being connected with a slurry spraying outlet of a slurry spraying pump, and the other end of the slurry conveying pipe is suitable for being connected with a spraying gun or a grouting pipe; a high-pressure gas inlet is formed in the pipe wall of one end of the slurry conveying pipe; the high-pressure gas control valve is arranged at the high-pressure gas inlet and used for controlling opening and closing of the high-pressure gas inlet, and the high-pressure gas inlet is suitable for being communicated with a high-pressure gas source through the high-pressure gas control valve. According to the slurry conveying assembly disclosed by the embodiment of the utility model, the slurry conveying pipe can be purged by utilizing high-pressure gas after flushing is finished, so that residual water in the slurry conveying pipe can be discharged in time, and further blockage caused by freezing in the slurry conveying pipe is avoided.

Description

Technical Field

[0001] This utility model relates to the field of fire prevention and extinguishing technology, and in particular to a slurry conveying component and a coal yard fire prevention and extinguishing device having the slurry conveying component. 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 shotcrete fire suppression work requires equipment with functions such as mixing and spraying slurry. This equipment needs to be used for multiple rounds of mixing, spraying, and mixing. Due to the viscous and easily solidified nature of the slurry, to prevent residual slurry from solidifying and clogging the pipes after spraying, the equipment is typically flushed promptly after spraying. After flushing, the spraying pump is activated to discharge the flushing water and washed-off slurry residue through the slurry transfer pipe.

[0004] In related technologies, after the equipment finishes rinsing, a large amount of rinsing water usually remains in the slurry transfer pipe. In colder climates, this residual rinsing water in the slurry transfer pipe will freeze into ice, causing blockage when the slurry transfer pipe is transporting slurry. Utility Model Content

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide a slurry transfer assembly that, after rinsing, uses high-pressure gas to purge the slurry transfer pipe, thereby promptly removing residual water from the slurry transfer pipe and preventing freezing and blockage.

[0006] This utility model also proposes a coal yard fire prevention and extinguishing device with the slurry conveying component.

[0007] According to a first aspect of the present invention, a slurry transport assembly includes: a slurry transport pipe, one end of which is adapted to be connected to the slurry outlet of a shotcrete pump, and the other end of which is adapted to be connected to a spray gun or a grouting pipe, wherein a high-pressure gas inlet is provided on the wall of the pipe at the one end of the slurry transport pipe; and a high-pressure gas control valve, which is located at the high-pressure gas inlet for controlling the opening and closing of the high-pressure gas inlet, wherein the high-pressure gas inlet is adapted to be connected to a high-pressure gas source through the high-pressure gas control valve.

[0008] According to the slurry transfer assembly of this utility model embodiment, by providing a high-pressure gas inlet on the slurry transfer pipe, high-pressure gas can be introduced into the slurry transfer pipe through the high-pressure gas inlet after the equipment is flushed, and the high-pressure gas is used to purge the slurry transfer pipe, thereby timely removing the water remaining in the slurry transfer pipe, and thus avoiding freezing and blockage in the slurry transfer pipe.

[0009] In addition, the slurry transfer assembly according to the embodiments of this utility model may also have the following additional technical features:

[0010] According to one embodiment of the present invention, the slurry transport assembly further includes a high-pressure gas generating assembly for generating high-pressure gas, the high-pressure gas generating assembly being adapted to communicate with the high-pressure gas inlet via the high-pressure gas control valve to deliver high-pressure gas toward the slurry transport pipe.

[0011] According to one embodiment of the present invention, the high-pressure gas generating assembly includes a high-pressure gas generator, which is an air compressor. The air compressor has an intake port and an exhaust port, and the exhaust port is adapted to be connected to the high-pressure gas control valve.

[0012] According to one embodiment of the present invention, the high-pressure gas generating assembly further includes a gas storage tank, which has a gas storage inlet and a gas storage outlet. The gas storage inlet is connected to the exhaust port, and the gas storage outlet is adapted to be connected to the high-pressure gas control valve.

[0013] According to one embodiment of the present invention, the high-pressure gas generating assembly further includes a dryer, the dryer including a drying inlet and a drying outlet, the drying inlet being connected to the gas storage outlet, and the drying outlet being adapted to be connected to the high-pressure gas control valve.

[0014] A coal yard fire prevention and extinguishing device according to a second aspect of the present invention includes: 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 the slurry outlet is provided with a slurry outlet control valve; 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 slurry transmission assembly according to the first aspect of the present invention, wherein one end of the slurry transmission pipe is connected to the slurry outlet, and the other end of the slurry transmission pipe is adapted to be connected to the spray gun or the grouting pipe.

[0015] According to the coal yard fire prevention and extinguishing device of the present invention, by setting the slurry transmission component of the first aspect embodiment, the coal yard fire prevention and extinguishing device of the present invention has all the advantages of the slurry transmission component of the first aspect embodiment, which will not be repeated here.

[0016] In addition, the coal yard fire prevention and extinguishing device according to the embodiments of this utility model may also have the following additional technical features:

[0017] According to one embodiment of the present invention, the coal yard fire prevention and extinguishing device further includes a motor vehicle body and a non-motor vehicle body. The mixing component, the spraying pump and the slurry transmission pipe are all disposed on the motor vehicle body, and the high-pressure gas generating component is disposed on the non-motor vehicle body. The non-motor vehicle body is adapted to be connected to the motor vehicle body.

[0018] 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 device further includes an overflow assembly, the overflow assembly 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 connected to the other end of the overflow pipe and the overflow port; and a pressure detection device, which is used to detect the pressure at the slurry outlet, and is electrically connected to the pressure relief valve to control the opening and closing of the pressure relief valve according to the pressure value detected by the pressure detection device.

[0019] According to one embodiment of the present invention, the coal yard fire prevention and extinguishing device further includes: a first connecting joint, the first connecting joint including a first connecting port, a second connecting port and a third connecting port that are interconnected with each other, the first connecting port being connected to the slurry outlet and the second connecting port being connected to the pressure detection device; and a second connecting joint, the second connecting joint including a fourth connecting port, a fifth connecting port and a sixth connecting port that are interconnected with each other, the fourth connecting port being connected to the third connecting port, the fifth connecting port being connected to the slurry transmission pipe and the sixth connecting port being connected to the overflow pipe.

[0020] 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, and the coal yard fire prevention and extinguishing device further includes a backwashing water supply pipe, one end of which is adapted to be connected to a water source, and the other end of which is connected to the backwashing interface.

[0021] 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

[0022] 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:

[0023] Figure 1 This is a perspective view of a coal yard fire prevention and extinguishing device according to an embodiment of the present utility model;

[0024] Figure 2 yes Figure 1 A partial structural schematic diagram of the coal yard fire prevention and extinguishing device shown in the image;

[0025] Figure 3 yes Figure 2 A partial structural schematic diagram of the coal yard fire prevention and extinguishing device shown in the image;

[0026] Figure 4 yes Figure 3 The diagram shows the connection structure between the slurry transfer pipe and the high-pressure gas generating component.

[0027] Figure 5 yes Figure 1 The diagram shows a coal yard fire prevention and extinguishing device connected to a high-pressure gas generating assembly via a non-motorized vehicle body. A dryer is not shown in the high-pressure gas generating assembly.

[0028] Figure 6 yes Figure 5 The diagram shows the structure of the high-pressure gas generating assembly and the non-motorized vehicle body.

[0029] Figure label:

[0030] Coal yard fire prevention and extinguishing device 100; mixing assembly 10; mixing chamber 101; water inlet 1011; material inlet 1012; A material inlet 10121; B material inlet 10122; slurry outlet 1013; slurry outlet control valve 10131; overflow outlet 1014; shotcrete pump 20; shotcrete inlet 201; shotcrete outlet 202; slurry transfer assembly 30; slurry transfer pipe 301; high-pressure gas inlet 3011; slurry transfer control valve 3012; high-pressure gas control valve 302; high-pressure gas generating assembly 303; air compressor 3031; air tank 3032; dryer 30 33; Motor vehicle body 41; Hook 411; Box body 42; Non-motor vehicle body 43; Chassis 431; Towing rope 4311; Hanging ring 43111; Overflow pipe 51; Pressure relief valve 52; First connecting joint 61; First connecting port 611; Second connecting port 612; Third connecting port 613; Second connecting joint 62; Fourth connecting port 621; Fifth connecting port 622; Sixth connecting port 623; Backwash water supply pipe 70; Slurry outlet pipe 80; Third connecting joint 90; Slurry outlet pipe connection end 901; Slurry inlet connection end 902; Backwash interface 9021. Detailed Implementation

[0031] 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.

[0032] The following is for reference. Figures 1-6 Description of a coal yard fire prevention and extinguishing device 100 according to an embodiment of the present utility model.

[0033] refer to Figures 1-3 As shown, the coal yard fire prevention and extinguishing device 100 according to an embodiment of the present invention may include a mixing assembly 10, a spray pump 20, a slurry conveying assembly 30, a vehicle body 41, and a compartment 42. The compartment 42 is provided on the vehicle body 41, and the mixing assembly 10 and the spray pump 20 are provided on the vehicle body 41 and located inside the compartment 42.

[0034] The mixing assembly 10 includes a mixing chamber 101, which defines a mixing cavity. The mixing chamber 101 is provided with a water inlet 1011, a material inlet 1012, and a slurry outlet 1013 communicating with the mixing cavity. A slurry outlet control valve 10131 is provided at the slurry outlet 1013 to control the opening and closing of the slurry outlet 1013. The water inlet 1011 is used to add water into the mixing cavity, the material inlet 1012 is used to add material into the mixing cavity, the mixing element is used to mix the material to make slurry, and the slurry outlet 1013 is used to discharge the slurry that has been made in the mixing cavity. The slurry outlet control valve 10131 is used to control the opening and closing of the slurry outlet 1013. During the material addition and slurry making process, the slurry outlet control valve 10131 is in a closed state; when the slurry is made and spraying is performed, the slurry outlet control valve 10131 can be controlled to open, so that the slurry in the mixing cavity can be discharged through the slurry outlet 1013.

[0035] The material inlet 1012 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 1012 may include component A inlet 10121 for adding component A and component B inlet 10122 for adding component B. Component A and component B can be arbitrarily selected according to actual needs. For example, component A may be powdered fly ash, and component B may be a powdered flame-retardant chemical composite material (powdered material). 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).

[0036] The shotcrete pump 20 has a shotcrete inlet 201 and a shotcrete outlet 202. The shotcrete inlet 201 is connected to a slurry control valve 10131, and the shotcrete outlet 202 is adapted to connect to a spray gun (not shown) or a grouting pipe (not shown). That is, the shotcrete inlet 201 is connected to the slurry outlet 1013 through the slurry control valve 10131. When the slurry control valve 10131 is open, the slurry in the mixing chamber can be conveyed towards the shotcrete inlet 201 through the slurry outlet 1013. Then, driven by the shotcrete pump 20, the slurry is pumped from the shotcrete inlet 201 towards the shotcrete outlet 202, and then sprayed onto the surface of the fire prevention and extinguishing area (e.g., a coal pile) through the spray gun or injected into the fire prevention and extinguishing area (e.g., a coal pile) through the grouting pipe.

[0037] The slurry transfer assembly 30 includes a slurry transfer pipe 301 and a high-pressure gas control valve 302. One end of the slurry transfer pipe 301 is connected to the slurry outlet 202, and the other end of the slurry transfer pipe 301 is adapted to connect to a spray gun or grouting pipe. That is, the slurry outlet 202 is connected to the spray gun or grouting pipe through the slurry transfer pipe 301, and the length of the slurry transfer pipe 301 can be arbitrarily selected according to actual needs.

[0038] Understandably, due to the viscous and easily solidified properties of the slurry, the equipment is usually flushed promptly after spraying to prevent residual slurry from solidifying and clogging the pipes. After flushing, the spraying pump 20 is turned on to discharge the flushing water and washed-off slurry residue through the slurry transfer pipe 301. In other words, in practical applications, the slurry transfer pipe 301 not only transports the slurry but also transports the flushing water and residue.

[0039] In practical applications, the applicant found that after rinsing, a large amount of rinsing water usually remains in the slurry transfer pipe 301. In colder climates, this residual rinsing water in the slurry transfer pipe 301 will freeze into ice, causing the slurry transfer pipe 301 to become blocked when transporting slurry.

[0040] To resolve the above technical issues, please refer to Figure 2 and Figure 3 In this application, a high-pressure gas inlet 3011 is provided on the pipe wall at one end of the slurry transmission pipe 301 that is connected to the slurry outlet 202. A high-pressure gas control valve 302 for controlling the opening and closing of the high-pressure gas inlet 3011 is provided at the high-pressure gas inlet 3011. The high-pressure gas inlet 3011 is adapted to be connected to a high-pressure gas source through the high-pressure gas control valve 302.

[0041] Specifically, after the equipment flushing is completed, by opening the high-pressure gas control valve 302, high-pressure gas can enter the slurry transfer pipe 301 through the high-pressure gas inlet 3011, forming a high-pressure airflow flowing away from the spray outlet 202 within the slurry transfer pipe 301. During the flow of the high-pressure airflow within the slurry transfer pipe 301, it blows away the accumulated water in the slurry transfer pipe 301 towards the end away from the spray outlet 202, thereby draining the water from the slurry transfer pipe 301 and preventing the water from freezing inside the slurry transfer pipe 301. Furthermore, while blowing away residual water in the slurry transfer pipe 301, the high-pressure airflow also has a purging effect on any remaining slurry residue in the slurry transfer pipe 301, resulting in a more thorough cleaning of the slurry residue within the slurry transfer pipe 301.

[0042] Optionally, the high-pressure gas can be high-pressure air, high-pressure nitrogen, or high-pressure carbon dioxide, etc. Alternatively, the high-pressure gas can be high-pressure steam. During the purging process of the slurry transfer pipe 301, the high-pressure steam can also heat the slurry transfer pipe 301, thereby not only purging the accumulated water and slurry residue in the slurry transfer pipe 301, but also melting and discharging the ice formed in the slurry transfer pipe 301.

[0043] Optionally, the gauge pressure of the "high-pressure gas" described in this application is not less than 10 MPa, which allows for better purging of the slurry transfer pipe 301. Of course, this application is not limited to this; in some other embodiments, the gauge pressure of the "high-pressure gas" may be less than 10 MPa.

[0044] Both the slurry transfer pipe 301 and the high-pressure gas control valve 302 can be located inside the chamber 42. The end of the slurry transfer pipe 301 furthest from the slurry outlet 202 extends outside the chamber 42 to facilitate connection with the spray gun or grouting pipe during operation. Optionally, a slurry transfer control valve 3012 is provided at the end of the slurry transfer pipe 301 furthest from the slurry outlet 202, and the slurry transfer pipe 301 is connected to the spray gun or grouting pipe through the slurry transfer control valve 3012.

[0045] In this way, when grouting or spraying is required, opening the grout transfer control valve 3012 connects the grout transfer pipe 301 to the spray gun or grouting pipe. At this time, the grout in the grout transfer pipe 301 can be sprayed onto the coal pile surface through the spray gun or injected into the coal pile through the grouting pipe. When grouting or spraying is not required, closing the grout transfer control valve 3012 disconnects the grout transfer pipe 301 from the spray gun or grouting pipe. Optionally, the grout transfer control valve 3012 can be a manual ball valve, which not only simplifies the structure but also reduces costs.

[0046] Of course, this application is not limited to this. In some other embodiments, the slurry transmission control valve 3012 may not be provided at the end of the slurry transmission pipe 301 away from the slurry outlet 202. The end of the slurry transmission pipe 301 away from the slurry outlet 202 may be directly connected to the spray gun or the grouting pipe.

[0047] By setting up a vehicle body 41 and installing both the mixing component 10 and the shotcrete pump 20 on the vehicle body 41, the coal yard fire prevention and extinguishing device 100 can move freely during the slurry preparation and shotcrete processes, making it flexible and convenient to use. This not only improves work efficiency but also greatly shortens the shotcrete pipeline, thereby saving costs.

[0048] In addition, by setting up the chamber 42 and placing the mixing assembly 10, the shotcrete pump 20 and the slurry transmission pipe 301 inside the chamber 42, the mixing assembly 10, the shotcrete pump 20 and the slurry transmission pipe 301 can be protected and kept warm.

[0049] Of course, this application is not limited to this. In some other embodiments, the coal yard fire prevention and extinguishing device 100 may not include the aforementioned compartment 42.

[0050] In some other embodiments, the coal yard fire prevention and extinguishing device 100 may not include the aforementioned motor vehicle body 41.

[0051] According to the coal yard fire prevention and extinguishing device 100 of this utility model embodiment, a high-pressure gas inlet 3011 is provided on the pipe wall of the slurry transmission pipe 301 near the slurry outlet 202. After the equipment is flushed, high-pressure gas is introduced into the slurry transmission pipe 301 through the high-pressure gas inlet 301. The high-pressure gas is used to purge the slurry transmission pipe 301, thereby timely discharging the water remaining in the slurry transmission pipe 301 and preventing freezing and blockage in the slurry transmission pipe 301.

[0052] In some embodiments of this application, please refer to Figure 4 The coal yard fire prevention and extinguishing device 100 also includes a high-pressure gas generating assembly 303 for generating high-pressure gas. The high-pressure gas generating assembly 303 is adapted to be connected to the high-pressure gas inlet 3011 via a high-pressure gas control valve 302 to deliver high-pressure gas into the slurry transmission pipe 301. The high-pressure gas generating assembly 303 is used to generate high-pressure gas and can serve as a high-pressure gas source.

[0053] Alternatively, please continue reading Figure 4The high-pressure gas generating assembly 303 includes a high-pressure gas generator, which can be an air compressor 3031. The air compressor 3031 has an intake port and an exhaust port. Free air enters the air compressor 3031 through the intake port, is compressed into high-pressure gas within the air compressor 3031, and then discharged through the exhaust port. The exhaust port is adapted to be connected to a high-pressure gas control valve 302, so that when the high-pressure gas control valve 302 is open, the high-pressure gas discharged from the exhaust port enters the slurry transmission pipe 301 through the high-pressure gas inlet 3011. Of course, this application is not limited to this; the high-pressure gas generator can also be a compressor, a pneumatic high-pressure pump, a pneumatic gas pump, a nitrogen high-pressure booster, or a high-pressure steam generator, etc.

[0054] Alternatively, please continue reading Figure 4 The high-pressure gas generating assembly 303 also includes a gas storage tank 3032, which has a gas storage inlet and a gas storage outlet. The gas storage inlet is connected to the exhaust port, and the gas storage outlet is adapted to be connected to the high-pressure gas control valve 302. That is, the air compressor 3031 is connected to the high-pressure gas control valve 302 through the gas storage tank 3032. The high-pressure gas generated by the air compressor 3031 first enters and is stored in the gas storage tank 3032 through the gas storage inlet. When the high-pressure gas control valve 302 is opened, the high-pressure gas stored in the gas storage tank 3032 enters the slurry transmission pipe 301 in sequence through the gas storage outlet and the high-pressure gas inlet 3011.

[0055] The air receiver 3032 acts as a buffer, effectively balancing air pressure fluctuations, reducing the impact of airflow on the system, and protecting the equipment. When the amount of gas produced by the air compressor 3031 exceeds the system's consumption, the excess gas is stored in the air receiver 3032. When the system requires more gas, the air receiver 3032 releases the stored gas to meet the system's needs. Furthermore, the air receiver 3032 reduces the number of times the air compressor 3031 starts and stops. Understandably, frequent starts and stops of the air compressor 3031 increase energy consumption and accelerate equipment wear. The air receiver 3032 allows the air compressor 3031 to stably provide compressed air without frequent starts and stops, thereby reducing energy consumption and extending the service life of the air compressor 3031. Furthermore, the compressed air entering the air storage tank 3032 will stay in the air storage tank 3032 for a period of time. During this period, impurities, moisture and other foreign objects in the air will settle down, thereby filtering out the liquid water in the high-pressure gas and preventing the liquid water in the high-pressure gas from being carried into the slurry conveying pipeline and affecting the drainage effect of the slurry conveying pipe 301.

[0056] Alternatively, please continue reading Figure 4The high-pressure gas generating assembly 303 also includes a dryer 3033, which has a drying inlet and a drying outlet. The drying inlet is connected to the gas storage outlet, and the drying outlet is adapted to be connected to the high-pressure gas control valve 302. In other words, the gas storage tank 3032 is connected to the high-pressure gas inlet 3011 via the dryer 3033. The high-pressure gas in the gas storage tank 3032 is dried by the dryer 3033 before entering the slurry transfer pipe 301. Drying the high-pressure gas by the dryer 3033 further removes moisture from the high-pressure gas, thus better preventing water from the high-pressure gas from being carried into the slurry transfer pipe 301 and affecting its drainage effect.

[0057] In one embodiment of this application, please refer to Figure 5 The high-pressure gas generating component 303 is located outside the compartment 42. The coal yard fire prevention and extinguishing device 100 also includes a non-motorized vehicle body 43, on which the high-pressure gas generating component 303 is mounted. The non-motorized vehicle body 43 is adapted to be connected to the motorized vehicle body 41. By connecting the non-motorized vehicle body 43 to the motorized vehicle body 41, the motorized vehicle body 41 can drive the non-motorized vehicle body 43 to move. This not only reduces costs but also allows the motorized vehicle body 41 and the non-motorized vehicle body 43 to form an integrated unit and move synchronously. The high-pressure gas generating component 303 is carried independently by the non-motorized vehicle body 43, which avoids it occupying space in the motorized vehicle body 41 and the compartment 42, while also making the overall structural design and layout of the equipment more flexible.

[0058] The connection method between the non-motorized vehicle body 43 and the motorized vehicle body 41 can be arbitrarily selected as needed. For example, please refer to [link to example]. Figures 5-6 The chassis 431 of the non-motorized vehicle body 43 is equipped with a towing rope 4311, the towing rope 4311 is equipped with a hanging ring 43111, and the rear of the motorized vehicle body 41 is equipped with a hook 411. By hanging the hanging ring 43111 onto the hook 411, the non-motorized vehicle body 43 is connected to the motorized vehicle body 41, and the connection operation is convenient.

[0059] Of course, this application is not limited to this. In some other embodiments, the high-pressure gas generating component 303 can also be provided on the motor vehicle body 41, which can eliminate the need for the non-motor vehicle body 43.

[0060] In some embodiments of this application, please refer to Figures 2-3The mixing chamber 101 is provided with an overflow port 1014 communicating with the mixing chamber. The coal yard fire prevention and extinguishing device 100 also includes an overflow assembly, which includes an overflow pipe 51, a pressure relief valve 52, and a pressure detection device (not shown in the figure). One end of the overflow pipe 51 is connected to the slurry outlet 202, and the other end of the overflow pipe 51 is connected to the overflow port 1014. The pressure relief valve 52 is connected to the other end of the overflow pipe 51 and the overflow port 1014. That is, the slurry outlet 202 and the overflow port 1014 are connected through the overflow pipe 51, and the pressure relief valve 52 is located between the overflow port 1014 and the overflow pipe 51 to control the opening and closing of the overflow port 1014 and the overflow pipe 51. The pressure detection device is used to detect the pressure at the slurry outlet 202. The pressure detection device is electrically connected to the pressure relief valve 52 to control the opening and closing of the pressure relief valve 52 according to the pressure value detected by the pressure detection device. Specifically, when the pressure detected by the pressure detection device exceeds the set pressure value, the pressure relief valve 52 opens, allowing the slurry outlet 202 to connect with the mixing chamber through the overflow pipe 51, thus transporting the slurry at the slurry outlet 202 back into the mixing chamber and achieving pipeline pressure relief. By setting up the overflow component, pressure can be relieved in time when the pipeline is blocked, avoiding the risk of pipe bursting.

[0061] Further, please refer to Figure 3 The coal yard fire prevention and extinguishing device 100 also includes a first connecting joint 61 and a second connecting joint 62. The first connecting joint 61 includes a first connecting port 611, a second connecting port 612, and a third connecting port 613 that are interconnected. The first connecting port 611 is connected to the slurry outlet 202, and the second connecting port 612 is connected to the pressure detection device. The second connecting joint 62 includes a fourth connecting port 621, a fifth connecting port 622, and a sixth connecting port 623 that are interconnected. The fourth connecting port 621 is connected to the third connecting port 613, the fifth connecting port 622 is connected to the slurry transmission pipe 301, and the sixth connecting port 623 is connected to the overflow pipe 51. Both the first connecting joint 61 and the second connecting joint 62 can be tee pipes. By setting the first connecting joint 61 and the second connecting joint 62, the connection between the slurry outlet 202 and the slurry transmission pipe 301, the connection between the slurry outlet 202 and the overflow pipe 51, and the connection between the slurry outlet 202 and the pressure detection device can be realized. The connection structure is simple, the internal connection structure of the equipment is neat and orderly, and it is convenient for maintenance.

[0062] In the prior art, during the flushing operation, flushing water is added through the inlet 1011 of the mixing chamber 101. This is not enough to thoroughly flush the residual slurry in the connecting pipe between the mixing chamber 101 and the shotcrete pump 20, resulting in a high frequency of blockage in this part of the pipe.

[0063] To address the aforementioned issues, in one embodiment of this application, please refer to... Figures 2-4The connecting pipe between the slurry inlet 201 and the slurry control valve 10131 is equipped with a backwashing interface 9021. The coal yard fire prevention and extinguishing device 100 also includes a backwashing water supply pipe 70. One end of the backwashing water supply pipe 70 is adapted to be connected to a water source, and the other end of the backwashing water supply pipe 70 is connected to the backwashing interface 9021.

[0064] It should be noted that the "water source" mentioned here 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 to 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.

[0065] By placing the backwash port 9021 on the connecting pipeline between the slurry inlet 201 and the slurry discharge control valve 10131, the backwash water supply pipe 70 delivers flushing water from the downstream side of the slurry outlet 1013 toward the mixing chamber. This method of flushing by supplying water in reverse from the downstream side of the slurry outlet 1013 toward the mixing chamber allows residual slurry in the connecting pipeline between the mixing chamber 101 and the slurry pump 20 to be flushed more cleanly and thoroughly, greatly reducing the occurrence of blockage in this part of the pipeline.

[0066] For further information, please refer to [link / reference]. Figures 2-4 The connecting pipeline between the shotcrete inlet 201 and the slurry control valve 10131 includes a slurry outlet pipe 80 and a third connecting joint 90. One end of the slurry outlet pipe 80 is connected to the slurry control valve 10131. The third connecting joint 90 includes a slurry outlet pipe connecting end 901 and a shotcrete inlet connecting end 902 that are connected to each other. The slurry outlet pipe connecting end 901 is connected to the other end of the slurry outlet pipe 80. The shotcrete inlet connecting end 902 is connected to the shotcrete inlet 201. The backwashing interface 9021 is located on the side wall of the shotcrete inlet connecting end 902, so that the connecting pipeline between the shotcrete inlet 201 and the slurry control valve 10131 can be flushed more thoroughly.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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 slurry transfer assembly, characterized in that, include: A slurry transmission pipe, one end of which is adapted to be connected to the slurry outlet of a shotcrete pump, and the other end of which is adapted to be connected to a spray gun or grouting pipe, and a high-pressure gas inlet is provided on the pipe wall at the one end of the slurry transmission pipe. A high-pressure gas control valve is provided at the high-pressure gas inlet for controlling the opening and closing of the high-pressure gas inlet, and the high-pressure gas inlet is adapted to be connected to a high-pressure gas source through the high-pressure gas control valve.

2. The slurry transfer assembly according to claim 1, characterized in that, It also includes a high-pressure gas generating assembly for generating high-pressure gas, the high-pressure gas generating assembly being adapted to communicate with the high-pressure gas inlet via the high-pressure gas control valve to deliver high-pressure gas toward the slurry transfer pipe.

3. The slurry transfer assembly according to claim 2, characterized in that, The high-pressure gas generating assembly includes a high-pressure gas generator, which is an air compressor. The air compressor has an intake port and an exhaust port, and the exhaust port is adapted to be connected to the high-pressure gas control valve.

4. The slurry transfer assembly according to claim 3, characterized in that, The high-pressure gas generating assembly also includes a gas storage tank, which has a gas storage inlet and a gas storage outlet. The gas storage inlet is connected to the exhaust port, and the gas storage outlet is adapted to be connected to the high-pressure gas control valve.

5. The slurry transfer assembly according to claim 4, characterized in that, The high-pressure gas generating assembly also includes a dryer, which has a drying inlet and a drying outlet. The drying inlet is connected to the gas storage outlet, and the drying outlet is adapted to be connected to the high-pressure gas control valve.

6. A fire prevention and extinguishing device for coal yards, characterized in that, include: 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 the slurry outlet is provided with a slurry outlet control valve; 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; According to any one of claims 1-5, one end of the slurry transport assembly is connected to the slurry outlet, and the other end of the slurry transport assembly is adapted to connect to the spray gun or the grouting pipe.

7. The coal yard fire prevention and extinguishing device according to claim 6, characterized in that, The coal yard fire prevention and extinguishing device also includes a motor vehicle body and a non-motor vehicle body. The mixing component, the spraying pump and the slurry transmission pipe are all located on the motor vehicle body, and the high-pressure gas generating component is located on the non-motor vehicle body. The non-motor vehicle body is adapted to be connected to the motor vehicle body.

8. The coal yard fire prevention and extinguishing device according to claim 6, 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 device further includes an overflow assembly, 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, wherein the pressure relief valve is connected to the other end of the overflow pipe and the overflow port; A pressure detection device is provided to detect the pressure at the sprayed slurry outlet. The pressure detection device is electrically connected to the pressure relief valve to control the opening and closing of the pressure relief valve based on the pressure value detected by the pressure detection device.

9. The coal yard fire prevention and extinguishing device according to claim 8, characterized in that, Also includes: The first connecting joint includes a first connecting port, a second connecting port, and a third connecting port that are interconnected with each other. The first connecting port is connected to the shotcrete outlet, and the second connecting port is connected to the pressure detection device. The second connection connector includes a fourth connection port, a fifth connection port, and a sixth connection port that are interconnected. The fourth connection port is connected to the third connection port, the fifth connection port is connected to the slurry transfer pipe, and the sixth connection port is connected to the overflow pipe.

10. The coal yard fire prevention and extinguishing device according to claim 6, characterized in that, The connecting pipeline between the slurry inlet and the slurry outlet control valve is provided with a backwashing interface. The coal yard fire prevention and extinguishing device also includes a backwashing water supply pipe. One end of the backwashing water supply pipe is adapted to be connected to a water source, and the other end of the backwashing water supply pipe is connected to the backwashing interface.

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