Material conveying assembly capable of reducing material agglomeration risk and fire preventing and extinguishing device for coal yard

Abstract

The utility model discloses a material conveying assembly capable of reducing the risk of material agglomeration and a fire preventing and extinguishing device in a coal yard, the material conveying assembly comprises an air amplifier, the air amplifier is provided with an inlet end, an outlet end and an injection inlet end, the inlet end is suitable for being connected with a material storage device, and the outlet end is suitable for being connected with a material inlet of a stirring bin; the air compressor is connected with the injection inlet end so as to convey high-pressure injection gas into the air amplifier; the material control valve is suitable for being arranged between the material storage device and the inlet end; and the weighing device is suitable for being arranged at the bottom of the material storage device to weigh the weight of the material storage device, and the weighing device is electrically connected with the air compressor and the material control valve so as to control opening and closing of the air compressor and the material control valve according to a weight signal detected by the weighing device. According to the material conveying assembly, materials can be gradually added, so that the risk of material agglomeration can be reduced, the quality of finished slurry is high, and the fire preventing and extinguishing performance is good.

Description

Technical Field

[0001] This utility model relates to the field of fire prevention and extinguishing technology, and in particular to a material conveying component that can reduce the risk of material agglomeration and a coal yard fire prevention and extinguishing device having the material conveying component. Background Technology

[0002] Currently, in power plants, steel mills, ports, and other locations where coal is stored, spontaneous combustion is prone to occur due to oxidation, leading to reduced calorific value, environmental pollution, and fire hazards. To address this issue, shotcrete equipment is typically used to create an oxygen barrier layer on the surface of the coal pile, cutting off air leakage and oxygen supply channels, slowing down the coal oxidation process, and thus providing fire prevention and extinguishing effects. However, during the mixing and preparation of the shotcrete, material agglomeration often occurs in the shotcrete equipment, resulting in uneven finished slurry and consequently affecting its fire prevention and extinguishing performance. Utility Model Content

[0003] 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 material conveying assembly that reduces the risk of material agglomeration. This assembly allows for the gradual addition of materials, thus reducing the risk of agglomeration and resulting in more uniform mixing of materials during the pulping process, leading to higher quality finished pulp and better fire resistance.

[0004] This utility model also proposes a coal yard fire prevention and extinguishing device having the above-mentioned material conveying components.

[0005] A material conveying assembly for reducing the risk of material agglomeration according to a first aspect embodiment of the present invention includes: an air amplifier having an inlet end, an outlet end, and an ejector inlet end, the inlet end being adapted to connect to a storage device, and the outlet end being adapted to connect to a material inlet of a mixing chamber; an air compressor connected to the ejector inlet end to deliver high-pressure ejector gas into the air amplifier; a material control valve adapted to be disposed between the storage device and the inlet end; and a weighing device adapted to be disposed at the bottom of the storage device to weigh the storage device, the weighing device being electrically connected to the air compressor and the material control valve to control the opening and closing of the air compressor and the material control valve based on the weight signal detected by the weighing device.

[0006] The material conveying component according to the present invention can reduce the risk of material agglomeration. It can realize the gradual addition of materials, thereby reducing the risk of material agglomeration, making the material mixing more uniform during the pulping process, resulting in high-quality finished pulp with good fire-fighting performance.

[0007] In addition, the material conveying assembly according to the embodiments of the present invention, which can reduce the risk of material agglomeration, may also have the following additional technical features:

[0008] According to one embodiment of the present invention, the mixing chamber includes a first mixing chamber and a second mixing chamber, the material inlet formed on the first mixing chamber is a first material inlet, the material inlet formed on the second mixing chamber is a second material inlet, and the outlet end can be selectively connected to at least one of the first material inlet and the second material inlet.

[0009] According to one embodiment of the present invention, the material conveying assembly further includes a first control valve, the first control valve including a first valve port, a second valve port and a third valve port, the third valve port being selectively connected to at least one of the first valve port and the second valve port, the third valve port being connected to the outlet end, the first valve port being connected to the first material inlet, and the second valve port being connected to the second material inlet.

[0010] According to one embodiment of the present invention, the air amplifier includes two separate air amplifiers, namely a first air amplifier and a second air amplifier. The inlet end, outlet end, and ejector inlet end of the first air amplifier are respectively a first inlet end, a first outlet end, and a first ejector inlet end. The inlet end, outlet end, and ejector inlet end of the second air amplifier are respectively a second inlet end, a second outlet end, and a second ejector inlet end. Both the first inlet end and the second inlet end are connected to the storage device via a material control valve. The material control valve is configured to allow the storage device to selectively communicate with at least one of the first inlet end and the second inlet end. The first outlet end is connected to the first material inlet, and the second outlet end is connected to the second material inlet. The air compressor is selectively connected to at least one of the first ejector inlet end and the second ejector inlet end.

[0011] According to one embodiment of the present invention, the material conveying assembly further includes a second control valve, the second control valve including a fourth valve port, a fifth valve port and a sixth valve port, the sixth valve port being selectively connected to at least one of the fourth valve port and the fifth valve port, the sixth valve port being connected to the air compressor, the fourth valve port being connected to the first ejector inlet end, and the fifth valve port being connected to the second ejector inlet end.

[0012] According to one embodiment of the present invention, the material control valve includes a seventh valve port, an eighth valve port, and a ninth valve port. The ninth valve port can be selectively connected to at least one of the seventh valve port and the eighth valve port. The ninth valve port is connected to the material storage device. The seventh valve port is connected to the first inlet end, and the eighth valve port is connected to the second inlet end.

[0013] According to one embodiment of the present invention, the air amplifier includes two separate air amplifiers, namely a first air amplifier and a second air amplifier. The inlet end, outlet end, and ejector inlet end of the first air amplifier are respectively a first inlet end, a first outlet end, and a first ejector inlet end. The inlet end, outlet end, and ejector inlet end of the second air amplifier are respectively a second inlet end, a second outlet end, and a second ejector inlet end. The air compressor includes two separate air compressors, namely a first air compressor and a second air compressor. The first air compressor is connected to the first ejector inlet end, and the second air compressor is connected to the second ejector inlet end. Both the first air compressor and the second air compressor are electrically connected to the weighing device. Both the first inlet end and the second inlet end are connected to the storage device via a material control valve. The material control valve is configured to allow the storage device to selectively communicate with at least one of the first inlet end and the second inlet end. The first outlet end is connected to the first material inlet, and the second outlet end is connected to the second material inlet.

[0014] A coal yard fire prevention and extinguishing device according to a second aspect of the present invention includes a fire prevention and extinguishing part, the fire prevention and extinguishing part comprising: a storage device for storing materials; a mixing assembly, the mixing assembly comprising a mixing chamber and a mixing element, the mixing chamber defining a mixing cavity, the mixing element being rotatably disposed within the mixing cavity, the mixing chamber having a water inlet, a material inlet, and a slurry outlet communicating with the mixing cavity, the slurry outlet having a slurry outlet control valve; a slurry pump, the slurry pump having a slurry inlet and a slurry outlet, the slurry inlet being connected to the slurry outlet control valve, the slurry outlet being adapted to connect to a spray gun or a grouting pipe; and a material conveying assembly according to any of the first aspects of the present invention, wherein the inlet end is connected to the storage device, and the outlet end is connected to the material inlet.

[0015] The coal yard fire prevention and extinguishing device according to the embodiment of the present utility model, by setting the material conveying component 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 material conveying component, 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, when the mixing chamber includes a first mixing chamber and a second mixing chamber, the mixing cavity formed in the first mixing chamber is the first mixing cavity, and the mixing cavity formed in the second mixing chamber is the second mixing cavity. The first mixing cavity and the second mixing cavity can switch between a connected state in which they are connected to each other and a disconnected state in which they are separated from each other.

[0018] According to one embodiment of the present invention, the mixing assembly further includes a connecting chamber and a switch door. The connecting chamber is connected between the first mixing chamber and the second mixing chamber. A communicating cavity is defined within the connecting chamber, and the communicating cavity communicates with both the first mixing chamber and the second mixing chamber. The switch door is movably disposed on the connecting chamber between a first position and a second position. When the switch door is in the first position, the first mixing chamber and the second mixing chamber communicate through the connecting cavity. When the switch door is in the second position, the switch door divides the communicating cavity into a first connecting cavity and a second connecting cavity that are not communicating with each other. The first connecting cavity communicates with the first mixing chamber, and the second connecting cavity communicates with the second mixing chamber.

[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 1 This 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 This is a partial structural schematic diagram of the fire prevention and extinguishing part according to an embodiment of the present utility model;

[0023] Figure 3 This is a partial structural schematic diagram of the fire prevention and extinguishing part according to another embodiment of the present invention;

[0024] Figure 4 This is a partial structural schematic diagram of the fire prevention and extinguishing part according to another embodiment of the present utility model;

[0025] Figure 5 This is a cross-sectional view of a portion of the structure of the mixing assembly according to an embodiment of the present utility model, wherein the opening and closing door body is in the first position;

[0026] Figure 6This is a cross-sectional view of a portion of the structure of the mixing assembly according to an embodiment of the present utility model, wherein the switch door is in the second position.

[0027] Figure label:

[0028] Coal yard fire prevention and extinguishing device 100; fire prevention and extinguishing section 10; first mixing chamber 101; first water inlet 1011; first material inlet 1013; first mixing chamber 1014; second mixing chamber 102; second water inlet 1021; second material inlet 1023; second mixing chamber 1024; connecting chamber body 103; connecting cavity 1031; first connecting cavity 10311; second connecting cavity 10312; opening and closing door body 1032; material storage device 104; material conveying assembly 105; air amplifier 1051; inlet end 10511; outlet end 10512; ejector inlet end 10513; first air amplifier 1051a; first inlet end 1051a1; first outlet end 1051a 2; First ejector inlet 1051a3; Second air amplifier 1051b; Second inlet 1051b1; Second outlet 1051b2; Second ejector inlet 1051b3; Air compressor 1052; First air compressor 1052a; Second air compressor 1052b; Material control valve 1053; Seventh valve port 10531; Eighth valve port 10532; Ninth valve port 10533; Weighing device 1054; First control valve 1055; First valve port 10551; Second valve port 10552; Third valve port 10553; Second control valve 1056; Fourth valve port 10561; Fifth valve port 10562; Sixth valve port 10563; Motor vehicle body 20; Box body 30. Detailed Implementation

[0029] 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.

[0030] 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.

[0031] refer to Figures 1-4 As shown, the coal yard fire prevention and extinguishing device 100 according to an embodiment of the present invention may include: a fire prevention and extinguishing section 10, a vehicle body 20, and a compartment 30. The compartment 30 is disposed on the vehicle body 20, the fire prevention and extinguishing section 10 is disposed on the vehicle body 20, and at least a portion of the fire prevention and extinguishing section 10 is located inside the compartment 30. The fire prevention and extinguishing section 10 includes a material storage device 104 for storing materials, a mixing assembly, a spray pump, and a material conveying assembly 105 for reducing the risk of material agglomeration.

[0032] The mixing assembly includes a mixing chamber and a mixing element. The mixing chamber defines a mixing cavity, and the mixing element is rotatably disposed within the mixing cavity. The mixing chamber has a water inlet, a material inlet, and a slurry outlet communicating with the mixing cavity. The slurry outlet is equipped with a slurry control valve. The water inlet is used to add water into the mixing cavity, the material inlet is used to add material into the mixing cavity, the mixing element is used to mix the material to form a slurry, and the slurry outlet is used to discharge the slurry from the mixing cavity. The slurry control valve controls the opening and closing of the slurry outlet. During material addition and slurry forming, the slurry control valve is in the closed state; when slurry forming is completed and spraying is performed, the slurry control valve can be opened, allowing the slurry in the mixing cavity to be discharged through the slurry outlet.

[0033] The material conveying assembly 105 connects the storage device 104 and the material inlet to quantitatively convey the material stored in the storage device 104 into the mixing chamber. In other words, the material conveying assembly 105 can automatically add material quantitatively into the mixing chamber, thus eliminating the need for manual material proportioning and the use of other vehicles (such as ash tank trucks or forklifts) for material addition. This not only saves labor but also results in better consistency of the finished slurry.

[0034] The shotcrete pump has a shotcrete inlet and a shotcrete outlet. The shotcrete inlet is connected to a slurry control valve, and the shotcrete outlet is suitable for connecting a spray gun or a grouting pipe. That is, the shotcrete inlet is connected to the slurry outlet through the slurry control valve. When the slurry control valve is open, the slurry in the mixing chamber can be conveyed from the slurry outlet toward the shotcrete inlet. Then, driven by the shotcrete pump, the slurry is pumped from the shotcrete inlet toward the shotcrete outlet, and then sprayed onto the surface of the coal pile through the spray gun or injected into the coal pile through the grouting pipe.

[0035] The material conveying assembly 105 includes an air amplifier 1051, an air compressor 1052, a material control valve 1053, and a weighing device 1054. The air amplifier 1051 has an inlet end 10511, an outlet end 10512, and an ejector inlet end 10513. The inlet end 10511 is connected to the storage device 104, so that the material stored in the storage device 104 can enter the air amplifier 1051 through the inlet end 10511. The air compressor 1052 is connected to the ejector inlet end 10513 to deliver high-pressure ejector gas into the air amplifier 1051, and the outlet end 10512 is connected to the material inlet. Driven by the high-pressure ejector gas, the material stored in the storage device 104 can enter the air amplifier 1051 through the inlet end 10511 and flow out of the air amplifier 1051 through the outlet end 10512. After flowing out of the air amplifier 1051 through the outlet end 10512, the material enters the mixing chamber through the material inlet.

[0036] Material control valve 1053 is located between storage device 104 and inlet end 10511. Material control valve 1053 is used to control the on / off connection between storage device 104 and inlet end 10511, that is, to control the on / off connection between storage device 104 and air amplifier 1051. Optionally, material control valve 1053 can be located at the outlet of storage device 104, and the on / off connection between storage device 104 and inlet end 10511 is controlled by controlling the opening and closing of the outlet of storage device 104.

[0037] Specifically, when the material control valve 1053 is closed, the storage device 104 and the inlet end 10511 are disconnected, that is, the storage device 104 and the air amplifier 1051 are not connected; when the material control valve 1053 is open, the storage device 104 and the inlet end 10511 are connected, that is, the storage device 104 and the air amplifier 1051 are connected.

[0038] A weighing device 1054 is located at the bottom of the storage device 104 to weigh the storage device 104. The weighing device 1054 is electrically connected to the air compressor 1052 and the material control valve 1053, so as to control the opening and closing of the air compressor 1052 and the material control valve 1053 according to the weight signal detected by the weighing device 1054. That is, the weighing device 1054 is electrically connected to the air compressor 1052 and also electrically connected to the material control valve 1053. Specifically, the weighing device 1054, the air compressor 1052, and the material control valve 1053 can all be electrically connected to the control device of the coal yard fire prevention and extinguishing device 100. The control device controls the opening and closing of the air compressor 1052 and the material control valve 1053 according to the change in the weight of the storage device 104 fed back by the weighing device 1054. Optionally, the weighing device 1054 can be a subtraction scale.

[0039] According to the material conveying assembly 105 of this utility model embodiment, the material conveying is driven by an air amplifier 1051 to convey the material stored in the storage device 104 to the mixing chamber. During this process, the material is gradually added to the mixing chamber. During the addition of the material, the agitator stirs the material and water added to the mixing chamber. That is, the material can be added and stirred at the same time, and the material is added gradually. Therefore, the risk of material agglomeration can be reduced, so that the material is stirred more evenly during the pulping process, the finished pulp has high quality and good fire resistance.

[0040] Furthermore, by including a vehicle body 20 in the coal yard fire prevention and extinguishing device 100, and mounting the fire prevention and extinguishing component 10 on the vehicle body 20, the fire prevention and extinguishing component 10 can move freely during material addition, slurry preparation, and spraying. Therefore, the coal yard fire prevention and extinguishing device 100 is highly flexible and convenient to use, thereby improving work efficiency and significantly shortening the spraying pipeline, thus saving costs.

[0041] In addition, by setting up the compartment 30 and ensuring that at least a portion of the fire prevention and extinguishing section 10 is located inside the compartment 30, the fire prevention and extinguishing section 10 can be protected and kept warm.

[0042] 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 30.

[0043] In some other embodiments, the coal yard fire prevention and extinguishing device 100 may not include the aforementioned motor vehicle body 20.

[0044] It should be noted that the types of materials that the material conveying component 105 of this application can convey can be arbitrarily selected according to the actual application scenario and actual needs. For example, in some application scenarios, when the coal yard fire prevention and extinguishing device 100 is carrying out fire prevention and extinguishing work, the materials required for slurry preparation include material A and material B, where material A is powdered fly ash and material B is a powdered flame-retardant chemical composite material (powdered flame-retardant chemical material). In this case, the material conveying component 105 of this application can convey material B.

[0045] Understandably, during pulping, the amount of flame retardant (B material) added is much smaller than that of fly ash (A material). If agglomeration occurs during the addition of flame retardant (B material), it will significantly impact the quality of the finished pulp. By employing the material conveying assembly 105 of the above embodiments of this application, the risk of agglomeration of flame retardant (B material) during the addition process can be greatly reduced, ensuring the quality of the finished pulp.

[0046] Optionally, when the change in weight of the storage device 104 fed back by the weighing device 1054 reaches the set demand, the control device can first control the material control valve 1053 to close, and then delay for a certain period of time (e.g., 10s or 15s) before controlling the air compressor 1052 to close so that the supply of high-pressure ejector gas to the air amplifier 1051 is cut off.

[0047] When the change in weight of the storage device 104, as indicated by the weighing device 1054, meets the pulping requirements, the material control valve 1053 is immediately closed to prevent excess material from entering the pipeline. Additionally, the control device delays the shutdown of the air compressor 1052 to prevent material accumulation in the pipeline. This combination of measures ensures better proportioning accuracy of the pulping material components and guarantees optimal fire-fighting performance of the sprayed slurry.

[0048] In some applications, the mixing component consists of only one mixing chamber.

[0049] In some applications, the mixing assembly includes multiple mixing chambers, each with a discharge control valve connected to the shotcrete pump's inlet. This allows multiple mixing chambers to supply shotcrete slurry to the pump. In this application, "multiple" refers to two or more, such as three, four, or five. By connecting the shotcrete pump to multiple mixing chambers, mixing and slurry preparation can be performed simultaneously within each chamber, meeting the demand for large-volume shotcreting in emergency situations. Alternatively, only some mixing chambers can perform mixing and slurry preparation while others remain on standby, or the mixing chambers can alternately perform mixing and slurry preparation. This avoids interruptions in the supply of shotcrete slurry to the pump due to equipment failure or pipeline blockage, ensuring the continuity of shotcreting operations and improving shotcreting efficiency.

[0050] The following description uses two mixing chambers, namely the first mixing chamber 101 and the second mixing chamber 102, as an example. It should be noted that the first mixing chamber 101 and the second mixing chamber 102 can simultaneously perform mixing and pulping operations, in which case the coal yard fire prevention and extinguishing device 100 operates in a dual-chamber pulping mode; or only one of the first mixing chamber 101 and the second mixing chamber 102 performs mixing and pulping operations, in which case the coal yard fire prevention and extinguishing device 100 operates in a single-chamber pulping mode. In other words, the coal yard fire prevention and extinguishing device 100 of this application has both a dual-chamber pulping mode and a single-chamber pulping mode, and it can switch between these two modes.

[0051] Please see Figures 1-6 The mixing chamber includes two, namely the first mixing chamber 101 and the second mixing chamber 102. Correspondingly, the mixing components also include two, namely the first mixing component and the second mixing component. The mixing chamber formed in the first mixing chamber 101 is the first mixing chamber 1014, and the mixing chamber formed in the second mixing chamber 102 is the second mixing chamber 1024. The water inlet, material inlet, and slurry outlet formed on the first mixing chamber 101 are the first water inlet 1011, the first material inlet 1013, and the first slurry outlet, respectively. The water inlet, material inlet, and slurry outlet formed on the second mixing chamber 102 are the second water inlet 1021, the second material inlet 1023, and the second slurry outlet, respectively. The slurry outlet control valve includes a first slurry outlet control valve and a second slurry outlet control valve. The first slurry outlet control valve is located at the first slurry outlet, and the second slurry outlet control valve is located at the second slurry outlet. The outlet end 10512 can be selectively connected to at least one of the first material inlet 1013 and the second material inlet 1023, so as to meet the material addition requirements of the coal yard fire prevention and extinguishing device 100 in the single-chamber slurry preparation mode and the double-chamber slurry preparation mode, respectively.

[0052] Specifically, when the outlet end 10512 is only connected to the first material inlet 1013, the material discharged from the outlet end 10512 is only transported to the first mixing chamber 101 through the first material inlet 1013, thereby realizing the addition of material to the coal yard fire prevention and extinguishing device 100 in single-chamber slurry preparation mode (slurry preparation only in the first mixing chamber 101); when the outlet end 10512 is only connected to the second material inlet 1023, the material discharged from the outlet end 10512 is only transported to the second mixing chamber 102 through the second material inlet 1023. This enables the addition of materials to the coal yard fire prevention and extinguishing device 100 in single-compartment pulping mode (pulping only in the second mixing compartment 102); when the outlet end 10512 is connected to both the first material inlet 1013 and the second material inlet 1023, the material discharged from the outlet end 10512 can not only enter the first mixing compartment 101 through the first material inlet 1013, but also enter the second mixing compartment 102 through the second material inlet 1023, thus enabling the addition of materials to the coal yard fire prevention and extinguishing device 100 in dual-compartment pulping mode.

[0053] In one optional embodiment of this utility model, please refer to Figure 2 The material conveying assembly 105 also includes a first control valve 1055, which includes a first valve port 10551, a second valve port 10552, and a third valve port 10553. The third valve port 10553 can be selectively connected to at least one of the first valve port 10551 and the second valve port 10552. The third valve port 10553 is connected to the outlet end 10512. The first valve port 10551 is connected to the first material inlet 1013, and the second valve port 10552 is connected to the second material inlet 1023. By setting the first control valve 1055, the connection between the outlet end 10512 and the first material inlet 1013 and the second material inlet 1023 can be realized. The connection structure is simple, which simplifies the overall structure of the coal yard fire prevention and extinguishing device 100 and facilitates maintenance. Optionally, the first control valve 1055 is a three-way directional valve; further, the first control valve 1055 is a manual three-way ball valve, which is easy to operate and has low cost. Of course, this application is not limited to this, and the first control valve 1055 can also be an electric three-way directional valve.

[0054] Please refer to some embodiments of this utility model. Figure 3The air amplifier 1051 includes two separate air amplifiers, namely a first air amplifier 1051a and a second air amplifier 1051b. The inlet end 10511, outlet end 10512, and ejector inlet end 10513 of the first air amplifier 1051a are respectively the first inlet end 1051a1, the first outlet end 1051a2, and the first ejector inlet end 1051a3. The inlet end 10511, outlet end 10512, and ejector inlet end 10513 of the second air amplifier 1051b are respectively the second inlet end 1051b1, the second outlet end 1051b2, and the second ejector inlet end 1051b3. Both the first inlet end 1051a1 and the second inlet end 1051b1 are connected to the storage device 104 via a material control valve 1053. The material control valve 1053 is configured to allow the storage device 104 to selectively connect to at least one of the first inlet end 1051a1 and the second inlet end 1051b1. The first outlet end 1051a2 is connected to the first material inlet 1013, the second outlet end 1051b2 is connected to the second material inlet 1023, and the air compressor 1052 can be selectively connected to at least one of the first ejector inlet end 1051a3 and the second ejector inlet end 1051b3.

[0055] Specifically, when the storage device 104 is only connected to the first inlet end 1051a1, the air compressor 1052 is correspondingly only connected to the first ejector inlet end 1051a3. In this case, the storage device 104 only conveys material into the first mixing chamber 101 through the first air amplifier 1051a, thereby enabling the addition of material to the coal yard fire prevention and extinguishing device 100 in single-chamber slurry preparation mode (slurry preparation only in the first mixing chamber 101). When the storage device 104 is only connected to the second inlet end 1051b1, the air compressor 1052 is correspondingly only connected to the second ejector inlet end 1051b3. In this case, the storage device 104 only conveys material into the first mixing chamber 101 through the second air amplifier 1051a, thereby enabling the addition of material to the coal yard fire prevention and extinguishing device 100 in single-chamber slurry preparation mode (slurry preparation only in the first mixing chamber 101). The air amplifier 1051b conveys material into the second mixing chamber 102, thereby enabling the addition of material to the coal yard fire prevention and extinguishing device 100 in the single-chamber slurry preparation mode (slurry preparation only in the second mixing chamber 102). When the storage device 104 is connected to both the first inlet end 1051a1 and the second inlet end 1051b1, the storage device 104 can convey material not only into the first mixing chamber 101 through the first air amplifier 1051a, but also into the second mixing chamber 102 through the second air amplifier 1051b, thereby enabling the addition of material to the coal yard fire prevention and extinguishing device 100 in the dual-chamber slurry preparation mode.

[0056] For further information, please refer to [link / reference]. Figure 3The material conveying assembly 105 also includes a second control valve 1056, which includes a fourth valve port 10561, a fifth valve port 10562, and a sixth valve port 10563. The sixth valve port 10563 can be selectively connected to at least one of the fourth valve port 10561 and the fifth valve port 10562. The sixth valve port 10563 is connected to the air compressor 1052. The fourth valve port 10561 is connected to the first ejector inlet end 1051a3, and the fifth valve port 10562 is connected to the second ejector inlet end 1051b3. By setting the second control valve 1056, the connection between the air compressor 1052 and the first ejector inlet end 1051a3 and the second ejector inlet end 1051b3 is realized. The connection structure is simple, which simplifies the overall structure of the coal yard fire prevention and extinguishing device 100 and facilitates maintenance. Optionally, the second control valve 1056 is a three-way directional valve; further, the second control valve 1056 is a manual three-way ball valve, which is convenient to operate and low in cost. Of course, this application is not limited to this, and the second control valve 1056 can also be an electric three-way directional valve.

[0057] For further information, please refer to [link / reference]. Figure 3 The material control valve 1053 includes a seventh valve port 10531, an eighth valve port 10532, and a ninth valve port 10533. The ninth valve port 10533 can be selectively connected to at least one of the seventh valve port 10531 and the eighth valve port 10532. The ninth valve port 10533 is connected to the storage device 104. The seventh valve port 10531 is connected to the first inlet end 1051a1, and the eighth valve port 10532 is connected to the second inlet end 1051b1. This allows for the connection between the storage device 104 and the first inlet end 1051a1 and the second inlet end 1051b1. The connection structure is simple, thus simplifying the overall structure of the coal yard fire prevention and extinguishing device 100 and facilitating maintenance. Optionally, the material control valve 1053 can be an electrically operated three-way directional valve.

[0058] Please refer to some embodiments of this utility model. Figure 4 This embodiment is consistent with the one described above. Figure 3The difference in the described embodiment is that the air compressor 1052 includes two compressors, namely a first air compressor 1052a and a second air compressor 1052b. The first air compressor 1052a is connected to the first ejector inlet 1051a3, and the second air compressor 1052b is connected to the second ejector inlet 1051b3. Both the first air compressor 1052a and the second air compressor 1052b are electrically connected to the weighing device 1054. That is, in this embodiment, by setting two air compressors 1052, the two air compressors 1052 are used to deliver high-pressure ejector gas to the first ejector inlet 1051a3 and the second ejector inlet 1051b3 respectively. The control device can control the start and stop of the first air compressor 1052a and the second air compressor 1052b according to the weight signal fed back by the weighing device 1054, that is, the control device controls the on and off of the high-pressure ejector gas in the first air amplifier 1051a and the second air amplifier 1051b. It should be noted that the control device controls the start and stop of the first air compressor 1052a and the second air compressor 1052b not only based on the weight signal fed back by the weighing device 1054, but also in combination with the working mode of the coal yard fire prevention and extinguishing device 100.

[0059] Specifically, when the coal yard fire prevention and extinguishing device 100 is in a single-compartment pulping mode where pulping only occurs in the first mixing chamber 101, regardless of changes in the weight signal fed back by the weighing device 1054, the control device always keeps the second air compressor 1052b in a closed state, and the weight signal fed back by the weighing device 1054 is only used to control the start and stop of the first air compressor 1052a; similarly, when the coal yard fire prevention and extinguishing device 100 is in a single-compartment pulping mode where pulping only occurs in the second mixing chamber 102 .... Regardless of changes in the weight signal fed back by the weighing device 1054, the control device always keeps the first air compressor 1052a in a closed state. The weight signal fed back by the weighing device 1054 is only used to control the start and stop of the second air compressor 1052b. When the coal yard fire prevention and extinguishing device 100 is in a dual-compartment slurry preparation mode where slurry preparation is carried out in both the first mixing chamber 101 and the second mixing chamber 102, the start and stop of the first air compressor 1052a and the second air compressor 1052b are controlled by the weight signal fed back by the weighing device 1054. As can be seen from the above, in this embodiment, by setting two air compressors 1052, the second control valve 1056 mentioned above can be omitted, and when the coal yard fire prevention and extinguishing device 100 is in the dual-compartment slurry preparation mode, the ejector driving force is greater, and the material conveying is faster and smoother.

[0060] In one embodiment of this utility model, the first stirring chamber 1014 and the second stirring chamber 1024 can be in a connected state (see [link]). Figure 5 ) and disconnected states that are separated from each other (see Figure 6The operation mode of the coal yard fire prevention and extinguishing device 100 is switched between two modes. That is, the first mixing chamber 1014 and the second mixing chamber 1024 can be connected to each other or isolated from each other. When the coal yard fire prevention and extinguishing device 100 is in the dual-chamber slurry preparation mode, the first mixing chamber 1014 and the second mixing chamber 1024 can be in a connected state, allowing them to share slurry raw materials. This avoids uneven distribution of raw materials within the two chambers, thereby improving the proportioning accuracy of each component in the slurry prepared in each mixing chamber. When the coal yard fire prevention and extinguishing device 100 is in the single-chamber slurry preparation mode, the first mixing chamber 1014 and the second mixing chamber 1024 can be in a disconnected state, isolating each other.

[0061] Further, please refer to Figures 5-6 The mixing assembly also includes a connecting chamber 103 and a door 1032. The connecting chamber 103 is connected between the first mixing chamber 101 and the second mixing chamber 102. A communicating cavity 1031 is defined within the connecting chamber 103, which communicates with both the first mixing chamber 1014 and the second mixing chamber 1024. That is, the communicating cavity 1031 communicates with both the first mixing chamber 1014 and the second mixing chamber 1024, thus enabling communication between the first mixing chamber 1014 and the second mixing chamber 1024 through the communicating cavity 1031.

[0062] The door 1032 is in the first position (see [link]). Figure 5 ) and second position (see Figure 6 It is movably disposed on the connecting compartment 103 between the two. Optionally, such as Figures 5-6 As shown, the switch door 1032 is detachably mounted on the connecting compartment 103, meaning that the switch door 1032 switches between a first position and a second position by being plugged in and out. Specifically, the switch door 1032 can be switched by being inserted downwards. Figure 5 The first position shown is moved to Figure 6 The second position shown; the door body 1032 can also be opened by pulling upwards. Figure 6 The second position shown is moved to Figure 5 The first position shown.

[0063] In the first position of the door opening / closing body 1032 (e.g.) Figure 5 When (as shown in the diagram), the first stirring chamber 1014 and the second stirring chamber 1024 can be connected through the connecting chamber; when the switch door 1032 is in the second position (as shown in the diagram), the first stirring chamber 1014 and the second stirring chamber 1024 can be connected through the connecting chamber; Figure 6When the switch door 1032 divides the connecting cavity 1031 into a first connecting cavity 10311 and a second connecting cavity 10312 that are not connected to each other, the first connecting cavity 10311 is connected to the first stirring cavity 1014, the second connecting cavity 10312 is connected to the second stirring cavity 1024, and the first stirring cavity 1014 and the second stirring cavity 1024 are not connected to each other.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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 material conveying assembly that can reduce the risk of material agglomeration, characterized in that, include: An air amplifier is provided with an inlet end, an outlet end and an ejector inlet end, the inlet end being adapted to connect to a storage device and the outlet end being adapted to connect to the material inlet of a mixing chamber; An air compressor connected to the ejector inlet to deliver high-pressure ejector gas toward the air amplifier; A material control valve, the material control valve being adapted to be disposed between the storage device and the inlet end; A weighing device is provided, which is adapted to be disposed at the bottom of the storage device to weigh the weight of the storage device. The weighing device is electrically connected to the air compressor and the material control valve to control the opening and closing of the air compressor and the material control valve according to the weight signal detected by the weighing device.

2. The material conveying assembly for reducing the risk of material agglomeration according to claim 1, characterized in that, The mixing chamber includes a first mixing chamber and a second mixing chamber. The material inlet formed on the first mixing chamber is a first material inlet, and the material inlet formed on the second mixing chamber is a second material inlet. The outlet end can be selectively connected to at least one of the first material inlet and the second material inlet.

3. The material conveying assembly for reducing the risk of material agglomeration according to claim 2, characterized in that, It also includes a first control valve, which includes a first valve port, a second valve port and a third valve port. The third valve port can be selectively connected to at least one of the first valve port and the second valve port. The third valve port is connected to the outlet end. The first valve port is connected to the first material inlet and the second valve port is connected to the second material inlet.

4. The material conveying assembly for reducing the risk of material agglomeration according to claim 2, characterized in that, The air amplifier includes two separate air amplifiers, designated as a first air amplifier and a second air amplifier. The inlet, outlet, and ejector inlet of the first air amplifier are respectively designated as a first inlet, a first outlet, and a first ejector inlet. Similarly, the inlet, outlet, and ejector inlet of the second air amplifier are respectively designated as a second inlet, a second outlet, and a second ejector inlet. Both the first inlet and the second inlet are connected to the storage device via the material control valve, which is configured to allow the storage device to be selectively connected to at least one of the first inlet and the second inlet. The first outlet is connected to the first material inlet, and the second outlet is connected to the second material inlet. The air compressor may be selectively connected to at least one of the first ejector inlet and the second ejector inlet.

5. The material conveying assembly for reducing the risk of material agglomeration according to claim 4, characterized in that, It also includes a second control valve, which includes a fourth valve port, a fifth valve port, and a sixth valve port. The sixth valve port can be selectively connected to at least one of the fourth valve port and the fifth valve port. The sixth valve port is connected to the air compressor. The fourth valve port is connected to the first ejector inlet end, and the fifth valve port is connected to the second ejector inlet end.

6. The material conveying assembly for reducing the risk of material agglomeration according to claim 4, characterized in that, The material control valve includes a seventh valve port, an eighth valve port, and a ninth valve port. The ninth valve port can be selectively connected to at least one of the seventh valve port and the eighth valve port. The ninth valve port is connected to the material storage device. The seventh valve port is connected to the first inlet end, and the eighth valve port is connected to the second inlet end.

7. The material conveying assembly for reducing the risk of material agglomeration according to claim 2, characterized in that, The air amplifier includes two separate air amplifiers, designated as a first air amplifier and a second air amplifier. The inlet, outlet, and ejector inlet of the first air amplifier are respectively designated as a first inlet, a first outlet, and a first ejector inlet. Similarly, the inlet, outlet, and ejector inlet of the second air amplifier are respectively designated as a second inlet, a second outlet, and a second ejector inlet. The air compressor includes two compressors, namely a first air compressor and a second air compressor. The first air compressor is connected to the first ejector inlet end, and the second air compressor is connected to the second ejector inlet end. Both the first air compressor and the second air compressor are electrically connected to the weighing device. Both the first inlet and the second inlet are connected to the storage device via the material control valve, which is configured to allow the storage device to be selectively connected to at least one of the first inlet and the second inlet. The first outlet is connected to the first material inlet, and the second outlet is connected to the second material inlet.

8. A fire prevention and extinguishing device for coal yards, characterized in that, Includes a fire prevention and extinguishing component, wherein the fire prevention and extinguishing component includes: 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 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; The material conveying assembly according to any one of claims 1-7, wherein the inlet end is connected to the storage device and the outlet end is connected to the material inlet.

9. The coal yard fire prevention and extinguishing device according to claim 8, characterized in that, When the mixing chamber includes a first mixing chamber and a second mixing chamber, the mixing cavity formed in the first mixing chamber is the first mixing cavity, and the mixing cavity formed in the second mixing chamber is the second mixing cavity. The first mixing cavity and the second mixing cavity can switch between a connected state where they are connected to each other and a disconnected state where they are separated from each other.

10. The coal yard fire prevention and extinguishing device according to claim 9, characterized in that, The mixing assembly further includes a connecting chamber and a switch door. The connecting chamber is connected between the first mixing chamber and the second mixing chamber, and a communicating cavity is defined within the connecting chamber. The communicating cavity communicates with both the first and second mixing chambers. The switch door is movably disposed on the connecting chamber between a first position and a second position. When the switch door is in the first position, the first stirring chamber and the second stirring chamber are connected through the connecting chamber; when the switch door is in the second position, the switch door divides the connecting chamber into a first connecting chamber and a second connecting chamber that are not connected to each other, the first connecting chamber is connected to the first stirring chamber, and the second connecting chamber is connected to the second stirring chamber.

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