Guniting device

Abstract

The utility model discloses a guniting device. The guniting device comprises a material storage box; a guniting generator; a negative pressure material pumping assembly; the water and gas conveying assembly comprises a water supply assembly and a gas supply assembly; the bearing vehicle body comprises a vehicle bottom plate and a frame main plate, the frame main plate is connected with the vehicle bottom plate and obliquely extends relative to the vehicle bottom plate in the vertical direction, and at least one part of the water and gas conveying assembly and the material storage box are both fixed to the bearing vehicle body; and the at least one part of the water and gas conveying assembly and the material storage box are located on the two sides of the frame main plate correspondingly. The guniting device is reasonable in structural layout, small in size and convenient to move.

Description

Technical Field

[0001] This utility model relates to the field of coal spontaneous combustion prevention technology, and in particular to a spraying device. Background Technology

[0002] Due to the needs for reinforcement, support, and fire prevention in underground coal mine roadways, shotcreting engineering is indispensable. Shotcreting equipment used in shotcreting projects can integrate shotcreting material storage, material transportation, water-material mixing, and shotcreting functions into one unit, thereby automating the shotcreting operation. However, existing shotcreting equipment suffers from problems such as unreasonable structural layout, large size, and inconvenient movement. 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 shotcrete device with a reasonable structural layout, small size, and convenient mobility.

[0004] A shotcrete device according to an embodiment of the present invention includes: a storage tank, wherein a storage cavity is defined within the storage tank, and the storage tank has a discharge port communicating with the storage cavity; a shotcrete generator, wherein a generating channel and an atomizing chamber are defined within the shotcrete generator, the generating channel having a channel inlet and a channel outlet, the atomizing chamber being arranged circumferentially around the generating channel, the atomizing chamber having an atomizing inlet and a plurality of atomizing outlets spaced apart from each other, the plurality of atomizing outlets being disposed between the atomizing chamber and the generating channel and distributed circumferentially along the generating channel, the atomizing chamber and the generating channel being connected through the atomizing outlets, and the channel inlet being connected to the discharge port; and a negative pressure material extraction component, wherein the negative pressure material extraction component is disposed between the discharge port and the channel inlet. The composite colloidal material in the storage chamber is driven to be conveyed through the outlet toward the channel inlet; a water-air conveying assembly, which includes a water supply assembly and an air supply assembly, wherein the water supply assembly is adapted to connect the atomizing inlet and a high-pressure water source, and the air supply assembly is adapted to connect the atomizing inlet and a high-pressure air source, and to connect the negative pressure material extraction assembly and the high-pressure air source; a carrier vehicle body, which includes a floor plate and a frame main plate, wherein the frame main plate is connected to the floor plate and extends vertically at an inclination relative to the floor plate, and at least a portion of the water-air conveying assembly and the storage tank are fixed to the carrier vehicle body, and the at least a portion of the water-air conveying assembly and the storage tank are respectively located on both sides of the frame main plate.

[0005] According to the shotcrete device of this utility model embodiment, by fixing at least a portion of the water-air conveying component and the storage tank to the carrier body, the water-air conveying component and the storage tank can be moved along with the carrier body, thus facilitating equipment movement. Furthermore, by positioning the portion of the water-air conveying component fixed to the carrier body on one side of the main frame and the storage tank on the other side of the main frame, the main frame spatially separates the water-air conveying component and the storage tank, resulting in a rational layout that facilitates material feeding and operation of the water-air conveying component. Moreover, by extending the main frame at an angle relative to the vehicle floor in the vertical direction, the water-air conveying component and the storage tank located on both sides of the main frame can overlap vertically and horizontally without interfering with each other, thereby reducing the dimensions of the carrier body in both the vertical and horizontal directions, and consequently reducing the overall volume of the carrier body.

[0006] In addition, the shotcrete device according to the embodiments of this utility model may also have the following additional technical features:

[0007] According to one embodiment of the present invention, the lower edge of the frame main board is connected to the front edge of the vehicle floor plate. In the direction from front to back, the frame main board extends from bottom to top and toward the vehicle floor plate. The storage box is located on the front side of the frame main board and is fixed to the frame main board. At least a portion of the water and air conveying assembly is located on the rear side of the frame main board and is fixed to the vehicle floor plate.

[0008] According to one embodiment of the present invention, the vehicle body further includes a first frame side plate and a second frame side plate disposed opposite to each other in the left-right direction. The first frame side plate is connected between the left edge of the vehicle floor plate and the left edge of the frame main plate, and the second frame side plate is connected between the right edge of the vehicle floor plate and the right edge of the frame main plate. The vehicle floor plate, the frame main plate, the first frame side plate and the second frame side plate define a receiving cavity that is open at the top and rear. The at least part of the water and air conveying assembly is housed in the receiving cavity.

[0009] According to one embodiment of the present invention, the carrier body further includes a frame support cover plate, which is connected between the upper edge of the first frame side plate and the upper edge of the second frame side plate, and the frame support cover plate covers the top opening of the accommodating cavity.

[0010] According to one embodiment of the present invention, the negative pressure material extraction assembly includes a material conveying pipe, a first air amplifier, and a second air amplifier. The material conveying pipe includes a material inlet and a material outlet. The material inlet is connected to the discharge port, and the material outlet is connected to the channel inlet. The first air amplifier is disposed between the discharge port and the material inlet. The first air amplifier has a first suction port, a first blowing port, and a first high-pressure gas inlet. The first suction port is connected to the discharge port, and the first blowing port is connected to the material inlet. The second air amplifier is disposed between the material outlet and the channel inlet. The second air amplifier has a second suction port, a second blowing port, and a second high-pressure gas inlet. The second suction port is connected to the material outlet, and the second blowing port is connected to the channel inlet. The gas supply assembly includes a distributor, a first high-pressure gas delivery pipe, a second high-pressure gas delivery pipe, and a third high-pressure gas delivery pipe. The distributor includes an input port, a first output port, a second output port, and a third high-pressure gas delivery pipe. The system has three output ports. The input port is adapted to connect to the high-pressure gas source. The first high-pressure gas delivery pipe is connected between the first output port and the first high-pressure gas inlet. The second high-pressure gas delivery pipe is connected between the second output port and the second high-pressure gas inlet. The third high-pressure gas delivery pipe is connected between the third output port and the atomizing inlet. The distributor is located on the rear side of the frame main board and fixed to the vehicle floor. One end of the first high-pressure gas delivery pipe, one end of the second high-pressure gas delivery pipe, and one end of the third high-pressure gas delivery pipe are all located on the rear side of the frame main board to connect to the first output port, the second output port, and the third output port, respectively. The other ends of the first high-pressure gas delivery pipe, the second high-pressure gas delivery pipe, and the third high-pressure gas delivery pipe all pass through the frame main board to the front side of the frame main board to connect to the first high-pressure gas inlet, the second high-pressure gas inlet, and the atomizing inlet, respectively.

[0011] According to one embodiment of the present invention, the water supply assembly includes a pressure reducing valve, a water supply pipe, and a pressure gauge. The pressure reducing valve has an inlet, an outlet, and a pressure gauge interface. The inlet is adapted to connect to the high-pressure water source. The pressure gauge interface is connected to the pressure gauge. Both the pressure reducing valve and the pressure gauge are located on the rear side of the main frame and fixed to the vehicle floor. One end of the water supply pipe is located on the rear side of the main frame to connect to the outlet, and the other end of the water supply pipe passes through the main frame to the front side of the main frame to connect to the atomizing inlet.

[0012] According to one embodiment of the present invention, the water supply assembly further includes a main water supply control valve, and the air supply assembly further includes a main air supply control valve. The main water supply control valve is located between the water inlet and the high-pressure water source, and the main air supply control valve is located between the input port and the high-pressure air source. Both the main water supply control valve and the main air supply control valve are located on the rear side of the frame main board and fixed to the vehicle floor.

[0013] According to one embodiment of the present invention, the main water supply control valve and the main air supply control valve constitute a dual valve. The water supply assembly further includes a separate water supply control valve, and the air supply assembly further includes a separate air supply control valve. The separate water supply control valve is located between the high-pressure water source and the main water supply control valve, and the separate air supply control valve is located between the high-pressure air source and the main air supply control valve. Both the separate water supply control valve and the separate air supply control valve are located on the rear side of the frame main board and fixed to the vehicle floor.

[0014] According to one embodiment of the present invention, the carrying trolley further includes a push handle, which is disposed on the frame main board and extends toward the rear side of the frame main board.

[0015] 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

[0016] 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:

[0017] Figure 1 This is a perspective view of the shotcrete device according to an embodiment of the present utility model;

[0018] Figure 2 yes Figure 1 A perspective view of the shotcrete device shown from another angle;

[0019] Figure 3 yes Figure 1 A partial structural schematic diagram of the shotcrete device shown;

[0020] Figure 4 yes Figure 1 A perspective view of the shotcrete generator shown in the image;

[0021] Figure 5 yes Figure 4 The front view of the shotcrete generator shown;

[0022] Figure 6 yes Figure 5 A cross-sectional view of the shotcrete generator shown along line AA;

[0023] Figure 7 yes Figure 1 A partial structural schematic diagram of the shotcrete device shown;

[0024] Figure 8 yes Figure 7 A partial structural diagram of the structure shown;

[0025] Figure 9 yes Figure 8 A partial structural diagram of the structure shown.

[0026] Figure label:

[0027] Shotcrete device 100; storage tank 10; storage chamber 11; discharge port 111; feeding port 112; shotcrete generator 20; generating channel 201; channel inlet 2011; channel outlet 2012; atomizing chamber 202; atomizing inlet 2021; atomizing outlet 2022; baffle 23; hanging ring 26; conveying pipe 31; first air amplifier 32; first high-pressure gas inlet 321; second air amplifier 33; second high-pressure gas inlet 331; pressure reducing valve 41; water inlet 411; water outlet 412; pressure gauge interface 413; water supply pipe 42; Pressure gauge 43; distributor 51; first high-pressure gas delivery pipe 52; second high-pressure gas delivery pipe 53; third high-pressure gas delivery pipe 54; tee pipe 60; triangular bracket 71; universal joint 72; carrier body 80; wheel 81; floor plate 82; frame main plate 83; first frame side plate 84; second frame side plate 85; frame support cover plate 86; push handle 87; accommodating cavity 801; branch water supply control valve 91; branch gas supply control valve 92; main water supply control valve 93; main gas supply control valve 94; individual water supply control valve 95; individual gas supply control valve 96. Detailed Implementation

[0028] 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.

[0029] The following is for reference. Figures 1-9 This invention describes a shotcrete apparatus 100 according to an embodiment of the present invention. The shotcrete apparatus 100 includes: a storage tank 10, a shotcrete generator 20, a negative pressure material extraction component, and a water-air conveying component. It should be noted that in the following description of this application, the shotcrete raw material is described as a composite colloidal material (high-resistance hydrogel). Of course, this application is not limited to this, and the shotcrete raw material can also be other suitable materials.

[0030] Please see Figures 1-2 as well as Figures 7-8 The storage tank 10 defines a storage cavity 11 suitable for storing the spraying raw material (composite colloidal material). The storage tank 10 is provided with a feeding port 112 and a discharging port 111 communicating with the storage cavity 11. The composite colloidal material (high-retention hydrogel) is a powder material, which can be added into the storage cavity 11 through the feeding port 112, and the composite colloidal material in the storage cavity 11 can be discharged through the discharging port 111. The feeding port 112 can be located at the top of the storage tank 10, and the discharging port 111 can be located at the bottom of the storage tank 10. Optionally, the top of the storage tank 10 can be provided with a cover (not shown) for sealing the feeding port 112. When adding material, the cover is opened; after adding material, the cover is closed, thereby reducing dust generation. The cover is breathable, which can prevent a negative pressure state in the storage cavity 11 from affecting the material discharge.

[0031] Please see Figures 4-6 The spray generator 20 defines a generating channel 201 and an atomizing chamber 202. The generating channel 201 has a channel inlet 2011 and a channel outlet 2012. The atomizing chamber 202 is arranged circumferentially around the generating channel 201. The atomizing chamber 202 has an atomizing inlet 2021 and a plurality of atomizing outlets 2022 spaced apart from each other. The plurality of atomizing outlets 2022 are located between the atomizing chamber 202 and the generating channel 201 and are distributed circumferentially along the generating channel 201. The atomizing chamber 202 and the generating channel 201 are connected through the atomizing outlets 2022.

[0032] A negative pressure material extraction component is located between the outlet 111 and the channel inlet 2011 to drive the composite colloidal material in the storage chamber 11 to flow from the outlet 111 toward the channel inlet 2011. The water-air conveying component includes a water supply component and an air supply component. The water supply component is adapted to connect the atomizing inlet 2021 and a high-pressure water source. The air supply component is adapted to connect the atomizing inlet 2021 and a high-pressure air source, and also to connect the negative pressure material extraction component and the high-pressure air source. That is, the atomizing inlet 2021 and the high-pressure air source can be connected through the air supply component, and the negative pressure material extraction component and the high-pressure air source are also connected through the air supply component. The high-pressure air source provides high-pressure gas to the negative pressure material extraction component through the air supply component, providing ejection power to the negative pressure material extraction component. The ejection effect of the high-speed airflow forms the driving force that drives the composite colloidal material to flow from the outlet 111 toward the channel inlet 2011.

[0033] Specifically, during the shotcrete operation, the water supply assembly delivers a metered amount of water for shotcreting to the atomization inlet 2021, and the air supply assembly delivers high-pressure gas to the atomization inlet 2021, thereby introducing a high-pressure water-air mixture (high-pressure air-water mist) into the atomization chamber 202. In other words, a high-pressure water source provides a high-pressure water flow to the atomization inlet 2021 through the water supply assembly, and a high-pressure air source provides a high-pressure airflow to the atomization inlet 2021 through the air supply assembly, thus forming a high-pressure water-air mixture (high-pressure air-water mist) within the atomization chamber 202. This high-pressure water-air mixture is then dispersed through multiple atomization outlets 2022 and sprayed into the generation channel 201.

[0034] The negative pressure extraction component quantitatively delivers the composite colloidal material stored in the storage chamber 11 to the generating channel 201. Within the generating channel 201, the composite colloidal material mixes with a high-pressure water-air mixture and is then sprayed from the channel outlet 2012 towards the shotcrete operation area. It should be noted that the high-pressure gas source, supplied by the gas supply component to the negative pressure extraction component as ejector power, mixes with the composite colloidal material and enters the generating channel 201. In other words, the composite colloidal material is mixed in the high-pressure airflow and enters the generating channel 201 under the drive of the high-pressure airflow. Within the generating channel 201, after the water and composite colloidal material react and mix, they are sprayed from the channel outlet 2012 towards the shotcrete operation area under the combined action of water and air pressure. Optionally, the shotcrete operation area can be the corner area of ​​the coal face, the area behind the coal face frame, or other exposed coal bodies (e.g., coal piles).

[0035] The pressure of the water and air flows must meet the requirements for material conveying and shotcreting power. Optionally, the pressure of the high-pressure water flow delivered from the high-pressure water source to the atomizing inlet 2021 through the water supply assembly can be no less than 0.3 MPa, and the pressure of the high-pressure air flow delivered from the high-pressure air source to the atomizing inlet 2021 and the negative pressure material extraction assembly through the air supply assembly can be no less than 0.5 MPa. This ensures the requirements for material conveying and shotcreting power.

[0036] By metering the water required for pulping towards the atomizing inlet 2021 through the water supply component and supplying high-pressure gas towards the atomizing inlet 2021 through the air supply component, the water required for pulping and the high-pressure gas are mixed in the form of a high-pressure water-gas mixture (high-pressure gas-water mist) within the atomizing chamber 202. This mixture is then dispersed through multiple atomizing outlets 2022 and sprayed into the generating channel 201. The composite colloidal material stored in the storage tank 10 is transported to the generating channel 201 under the drive of the high-pressure airflow. There, it mixes with the water-gas mixture (high-pressure gas-water mist) sprayed into the generating channel 201 from the atomizing outlets 2022 and is then sprayed from the channel outlet 2012 into the pulping operation area.

[0037] The driving forces for conveying the shotcrete raw materials (i.e., the composite colloidal material is conveyed from the storage tank 10 into the generating channel 201) and for shotcreting (i.e., the water-based materials are mixed in the generating channel 201 and then sprayed onto the shotcrete operation area) are the air pressure of the high-pressure air source and the water pressure of the high-pressure water source. When the shotcrete device 100 is used in an underground coal mine, the high-pressure water source can be high-pressure water from the underground coal mine water supply network. The atomizing inlet 2021 is connected to the underground coal mine water supply network through the water supply component, thereby conveying the high-pressure water from the underground coal mine water supply network to the atomizing inlet 2021. The high-pressure air source can be compressed air from the underground coal mine compressed air network. The atomizing inlet 2021 and the negative pressure extraction component can both be connected to the underground coal mine compressed air network through the air supply component, thereby conveying the compressed air from the underground coal mine compressed air network to the atomizing inlet 2021 and the negative pressure extraction component, respectively. Therefore, when the shotcrete device 100 of this application embodiment is used in underground coal mines, the pressurized water and compressed air in the underground coal mine water supply network and compressed air network can provide material conveying and shotcrete power for the shotcrete device 100 without the need for electric drive, thereby improving the installability and reliability of mine construction.

[0038] It should be noted that the high-pressure water source of the shotcrete device 100 in this application embodiment is not limited to the pressurized water in the underground water supply network of the coal mine, and the high-pressure air source is not limited to the compressed air in the underground compressed air network of the coal mine. For example, when the shotcrete device 100 in this application embodiment is used for shotcrete fire prevention and extinguishing work on coal piles in coal yards, the high-pressure water source and the high-pressure air source will be selected according to the on-site construction conditions.

[0039] After the composite colloidal material and water react fully, a gel is formed. The composite colloidal material and water mix within the generating channel 201. Before being sprayed out through the channel outlet 2012, the composite colloidal material and water undergo only a preliminary reaction to form a slurry between a powder and a gel state. The viscosity of this slurry is lower than that of the gel, thus allowing it to be smoothly sprayed out through the channel outlet 2012 to the shotcrete operation area under the pressure of compressed air and pressurized water. After being sprayed out of the channel outlet 2012 and before reaching the shotcrete operation area, the composite colloidal material and water undergo further reaction. Upon reaching the shotcrete operation area, the viscosity of the slurry further increases, allowing it to adhere to the surface of the shotcrete operation area. After reaching the surface of the shotcrete operation area, the composite colloidal material and water continue to react, further increasing the viscosity of the slurry and resulting in a more secure adhesion to the wall.

[0040] In other words, the reaction between the composite colloidal material and water is divided into three stages. The first stage is during the mixing process with water in the generating channel 201. At this time, the composite colloidal material and water only undergo a preliminary reaction to form a low-viscosity slurry between powder and gel, which can be sprayed under the action of pressurized water and compressed air. The second stage is before the slurry reaches the surface of the spraying operation area after being sprayed out from the channel outlet 2012 of the generating channel 201. At this time, the composite colloidal material and water react further to form a medium-viscosity slurry that can adhere to the wall. The third stage is after reaching the surface of the spraying operation area. At this time, the composite colloidal material and water react further to form a high-viscosity slurry that adheres more firmly to the wall.

[0041] Understandably, the ratio Q1 / Q2 between the flow rate Q1 of the water supply component conveying the water required for pulping towards the atomizing inlet 2021 and the flow rate Q2 of the composite colloidal material conveying the negative pressure extraction component into the generating channel 201 is the water-material mixing mass ratio within the generating channel. By adjusting the flow rate Q1 of the water supply component conveying the water required for pulping towards the atomizing inlet 2021 and the flow rate Q2 of the negative pressure extraction component conveying the composite colloidal material into the generating channel 201, different water-material mixing mass ratios can be obtained, thereby meeting the slurry spraying requirements of walls with different roughness.

[0042] As can be seen from the above, the shotcrete generator 20 is used for water-material mixing and shotcreting. That is to say, the shotcrete generator 20 provides a place for water-material mixing and shotcreting, and can also be used for shotcreting. The negative pressure extraction assembly is used to transport shotcrete raw materials into the shotcrete generator 20, the water-air conveying assembly is used to transport high-pressure water-air mixed fluid into the shotcrete generator 20, and to transport high-pressure ejector airflow into the negative pressure extraction assembly.

[0043] Optionally, please refer to Figures 1-3 The shotcrete device 100 may further include a tripod bracket 71 and a universal joint 72. The shotcrete generator 20 is supported on the tripod bracket 71, and the shotcrete generator 20 and the tripod bracket 71 are connected by the universal joint 72. In this way, by supporting the shotcrete generator 20 on the tripod bracket 71, the operator does not need to lift the shotcrete generator 20 during shotcreting, making operation easier and more convenient. Furthermore, the shotcrete generator 20 and the tripod bracket 71 are connected by the universal joint 72, allowing the shotcrete generator 20 to rotate relative to the tripod bracket 71. During shotcreting operations, when the shotcrete direction needs to be adjusted, there is no need to move the tripod bracket 71; adjustment can be made simply by rotating the shotcrete generator 20. Please continue reading. Figures 1-3 The shotcrete generator 20 is equipped with hanging rings 26 on both sides. During the shotcrete operation, the shotcrete generator 20 can be operated by holding the hanging rings 26.

[0044] Of course, this application is not limited to this. In some other embodiments, the shotcrete device 100 may not include the above-mentioned triangular bracket 71 and universal joint 72 for support and positioning. The shotcrete generator 20 can be suspended on the coal mining face support by a hoisting strap.

[0045] Understandably, during shotcreting operations, when the shotcreting position changes, it is necessary to move the storage tank 10 and the shotcrete generator 20. Correspondingly, the negative pressure material extraction assembly and the water-air conveying assembly connected between the storage tank 10 and the shotcrete generator 20 will also move along with them. For convenient equipment movement, please refer to [link to relevant documentation]. Figures 1-2 as well as Figures 7-9 The shotcrete device 100 in this embodiment further includes a support vehicle body 80, which includes a floor plate 82 and a frame main plate 83. Wheels 81 are provided at the bottom of the floor plate 82. The frame main plate 83 is connected to the floor plate 82 and extends vertically at an angle relative to the floor plate 82. At least a portion of the water-air conveying assembly and the storage tank 10 are fixed to the support vehicle body 80, and at least a portion of the water-air conveying assembly and the storage tank 10 are located on opposite sides of the frame main plate 83. That is, the portion of the water-air conveying assembly fixed to the support vehicle body 80 is located on one side of the frame main plate 83, and the storage tank 10 is located on the other side of the frame main plate 83.

[0046] According to the embodiment of the present invention, the spraying device 100 fixes at least a portion of the water-air conveying component and the storage tank 10 to the carrier body 80. Moving the carrier body 80 allows the water-air conveying component and the storage tank 10 to move with it, thus facilitating equipment movement. Furthermore, by positioning the portion of the water-air conveying component fixed to the carrier body 80 on one side of the frame main plate 83 and the storage tank 10 on the other side of the frame main plate 83, the frame main plate 83 spatially separates the water-air conveying component and the storage tank 10, resulting in a reasonable layout that facilitates material feeding and operation of the water-air conveying component. Moreover, by extending the frame main plate 83 vertically relative to the chassis 82, the water-air conveying component and the storage tank 10 located on both sides of the frame main plate 83 can overlap vertically and horizontally without interfering with each other. This reduces the vertical and horizontal dimensions of the carrier body 80, thereby reducing its overall volume.

[0047] In one embodiment of this utility model, please refer to Figure 6The spray generator 20 may be equipped with a baffle 23 within its generating channel 201, with at least a portion of the baffle 23 located between the atomization outlet 2022 and the channel outlet 2012. The baffle 23 turbulents the water-material mixing within the generating channel 201, allowing for more uniform and thorough mixing. Optionally, the baffle 23 may comprise a plurality of baffles spaced circumferentially along the generating channel 201.

[0048] In one embodiment of this utility model, please refer to Figures 1-2 as well as Figure 7 The lower edge of the frame main board 83 is connected to the front edge of the vehicle floor 82. In the front-to-back direction, the frame main board 83 extends from bottom to top and toward the vehicle floor 82. The storage box 10 is located on the front side of the frame main board 83 and is fixed to the frame main board 83. At least a part of the water and air conveying assembly is located on the rear side of the frame main board 83 and is fixed to the vehicle floor 82. This not only makes the installation of the storage box 10 and the water and air conveying assembly on the vehicle body 80 convenient, but also facilitates the shotcrete construction operation.

[0049] It should be noted that, as Figure 1 and Figure 7 As shown in this application, in the description of the various components of the carrier trolley 80, the direction of travel of the carrier trolley 80 is the front side of the carrier trolley, the direction of reversal of the carrier trolley 80 is the rear side of the carrier trolley 80, the direction of gravity acting on the carrier trolley 80 is the bottom, and the direction opposite to the direction of gravity is the top. The left and right sides are established based on the above directions, and the left and right directions are the directions perpendicular to the up and down directions and the front and back directions.

[0050] Optionally, the storage box 10 can be connected and fixed to the frame main board 83 by means of welding, threaded connection or integral molding; similarly, the water and air conveying assembly can also be connected and fixed to the vehicle floor 82 by means of welding, threaded connection or integral molding.

[0051] Please continue reading. Figures 1-2 as well as Figure 7The carrier body 80 also includes a first frame side plate 84 and a second frame side plate 85 arranged opposite each other in the left-right direction. The first frame side plate 84 is connected between the left edge of the vehicle bottom plate 82 and the left edge of the frame main plate 83, and the second frame side plate 85 is connected between the right edge of the vehicle bottom plate 82 and the right edge of the frame main plate 83. The vehicle bottom plate 82, the frame main plate 83, the first frame side plate 84 and the second frame side plate 85 define a receiving cavity 801 that is open at the top and rear. At least a portion of the water and air conveying assembly is housed in the receiving cavity 801. By setting the first frame side plate 84 and the second frame side plate 85, not only can the water and air conveying assembly be protected, but the overall structural strength of the carrier trolley 80 can also be improved, and the storage box 10 can be stably supported on the frame main plate 83.

[0052] For further information, please refer to [link / reference]. Figures 1-2 as well as Figure 7 The carrier body 80 also includes a frame support cover plate 86, which is connected between the upper edge of the first frame side plate 84 and the upper edge of the second frame side plate 85. The frame support cover plate 86 covers the top opening of the accommodating cavity 801. By setting the frame support cover plate 86, not only can the water and air conveying components be protected from above, but the overall structural strength of the carrier trolley 80 can also be further improved.

[0053] Please refer to some embodiments of this utility model. Figures 1-2 The negative pressure material extraction assembly includes a material conveying pipe 31, a first air amplifier 32, and a second air amplifier 33. The material conveying pipe 31 includes a material inlet and a material outlet. The material inlet is connected to the discharge port 111, and the material outlet is connected to the channel inlet 2011. In other words, the discharge port 111 and the channel inlet 2011 of the storage tank 10 are connected via the material conveying pipe 31. The first air amplifier 32 is located between the discharge port 111 and the material inlet. The first air amplifier 32 has a first suction port, a first blowing port, and a first high-pressure gas inlet 321. The first suction port is connected to the discharge port 111, and the first blowing port is connected to the material inlet. The second air amplifier 33 is located between the material outlet and the channel inlet 2011. The second air amplifier 33 has a second suction port, a second blowing port, and a second high-pressure gas inlet 331. The second suction port is connected to the material outlet, and the second blowing port is connected to the channel inlet 2011.

[0054] Both the first high-pressure gas inlet 321 and the second high-pressure gas inlet 331 are connected to a high-pressure gas source via a gas supply assembly. The high-pressure gas source delivers high-pressure gas flow towards the first high-pressure gas inlet 321 and the second high-pressure gas inlet 331 through the gas supply assembly, providing ejection power for the first air amplifier 32 and the second air amplifier 33. This causes the composite colloidal material in the storage tank 10, driven by the first air amplifier 32, to be discharged from the outlet 111 and then drawn into the first air amplifier 32 through the first suction port. It is then blown into the conveying pipe 31 through the first blowout port. Driven by the second air amplifier 33, the composite colloidal material blown into the conveying pipe 31 is drawn into the second air amplifier 33 through the second suction port and then blown into the generating channel 201 through the second blowout port. In other words, the negative pressure extraction assembly achieves the extraction and conveying of the composite colloidal material through the suction relay of the first air amplifier 32 and the second air amplifier 33. The structure is simple and the driving force is strong. Of course, this application is not limited to this; at least one more air amplifier can be connected in series between the first air amplifier 32 and the second air amplifier 33. In other words, the negative pressure material extraction assembly can also include three or more air amplifiers connected in series. This makes the overall suction force of the negative pressure material extraction assembly greater, the suction distance longer, and the suction process smoother.

[0055] Further, please refer to Figures 1-2 as well as Figures 7-9 The gas supply assembly may include a distributor 51, a first high-pressure gas delivery pipe 52, a second high-pressure gas delivery pipe 53, and a third high-pressure gas delivery pipe 54. The distributor 51 includes an input port, a first output port, a second output port, and a third output port, with the input port adapted to connect to a high-pressure gas source. The first high-pressure gas delivery pipe 52 connects between the first output port and the first high-pressure gas inlet 321, the second high-pressure gas delivery pipe 53 connects between the second output port and the second high-pressure gas inlet 331, and the third high-pressure gas delivery pipe 54 connects between the third output port and the atomizing inlet 2021. Thus, the first high-pressure gas inlet 321 and the high-pressure gas source can be connected via the first high-pressure gas delivery pipe 52, the second high-pressure gas inlet 331 and the high-pressure gas source can be connected via the second high-pressure gas delivery pipe 53, and the high-pressure gas source and the atomizing inlet 2021 can be connected via the third high-pressure gas delivery pipe 54. By including a distributor 51 with one inlet and three outlets in the gas supply assembly, the connection between the high-pressure gas source and the first high-pressure gas inlet 321, the second high-pressure gas inlet 331 and the atomizing inlet 2021 can be realized, thereby making the overall structure of the spraying device 100 simple and convenient for connection and maintenance.

[0056] Please continue reading. Figures 1-2 as well as Figures 7-9The distributor 51 is located on the rear side of the frame mainboard 83 and fixed to the vehicle floor 82. One end of the first high-pressure gas delivery pipe 52, one end of the second high-pressure gas delivery pipe 53, and one end of the third high-pressure gas delivery pipe 54 are all located on the rear side of the frame mainboard 83 to connect to the first output port, the second output port, and the third output port, respectively. The distributor 51 is located inside the receiving cavity 801. One end of the first high-pressure gas delivery pipe 52, one end of the second high-pressure gas delivery pipe 53, and one end of the third high-pressure gas delivery pipe 54 all extend into the receiving cavity 801 to connect to the distributor 51. The other ends of the first high-pressure gas delivery pipe 52, the second high-pressure gas delivery pipe 53, and the third high-pressure gas delivery pipe 54 all pass through the frame mainboard 83 to the front side of the frame mainboard 83 to connect to the first high-pressure gas inlet 321, the second high-pressure gas inlet 331, and the atomizing inlet 2021, respectively. By placing the distributor 51 on the rear side of the frame main board 83 and fixing it to the vehicle floor 82, not only can the air supply component move with the movement of the carrier trolley 80, but the overall layout of the equipment is also reasonable, making it convenient for operation and maintenance.

[0057] Optionally, please refer to Figures 7-9 The air supply assembly also includes a branch air supply control valve 92, which is located between the first output port and the first high-pressure gas inlet 321. By controlling the opening of the branch air supply control valve 92, the pressure of the high-pressure gas entering the first air amplifier 32 through the first high-pressure gas inlet 321 can be controlled, thereby controlling the suction of the first air amplifier 32, and consequently controlling the flow rate of the composite colloidal material conveyed in the delivery pipe 31. This allows for flexible adjustment of the water-material mixing ratio in the generating channel 201 and the slurry output during shotcreting operations. The branch air supply control valve 92 is also located within the receiving cavity, facilitating operation and maintenance.

[0058] Please see Figures 1-2 as well as Figures 7-9 The water supply assembly includes a pressure reducing valve 41, a water supply pipe 42, and a pressure gauge 43. The pressure reducing valve 41 has an inlet 411, an outlet 412, and a pressure gauge interface 413. The inlet 411 is suitable for connecting to a high-pressure water source. The outlet 412 is connected to one end of the water supply pipe 42. The pressure gauge interface 413 is connected to the pressure gauge 43. The other end of the water supply pipe 42 is connected to the atomizing inlet 2021. The high-pressure water source and the atomizing inlet 2021 are connected through the water supply pipe 42. The pressure reducing valve 41 is used to regulate the water pressure in the water supply pipe 42. On the one hand, it can prevent the pipeline from being damaged by excessive water pressure. On the other hand, it can adjust the water flow rate in the water supply pipe 42 as needed, thereby adjusting the mass ratio of water and composite colloidal material mixed in the generating channel 201.

[0059] The pressure reducing valve 41 and pressure gauge 43 are both located on the rear side of the frame main plate 83 and fixed to the vehicle floor 82. One end of the water supply pipe 42 is located on the rear side of the frame main plate 83 to connect to the water outlet 412. The pressure reducing valve 41 and pressure gauge 43 are both located inside the receiving cavity 801. One end of the water supply pipe 42 extends into the receiving cavity 801 to connect to the water outlet 412, and the other end of the water supply pipe 42 passes through the frame main plate 83 to the front side of the frame main plate 83 to connect to the atomizing inlet 2021. By placing the pressure reducing valve 41 and pressure gauge 43 inside the receiving cavity 801 and fixing them to the vehicle floor 82, not only can the water supply assembly move with the movement of the carrying trolley 80, but the overall layout of the equipment is also reasonable, facilitating operation and maintenance.

[0060] For further information, please refer to [link / reference]. Figures 7-9 The water supply assembly also includes a main water supply control valve 93, and the air supply assembly also includes a main air supply control valve 94. The main water supply control valve 93 is located between the water inlet 411 and the high-pressure water source to control the on / off connection between the water inlet 411 and the high-pressure water source. The main air supply control valve 94 is located between the input port and the high-pressure air source to control the on / off connection between the input port and the high-pressure air source. Both the main water supply control valve 93 and the main air supply control valve 94 are located on the rear side of the frame main plate 83 and fixed on the vehicle floor plate 82. Both the main water supply control valve 93 and the main air supply control valve 94 can be located within the accommodating cavity 801, which is a reasonable layout and convenient for operation.

[0061] Optionally, such as Figures 1-2 as well as Figures 7-9 As shown, the main water supply control valve 93 and the main air supply control valve 94 can form a double valve, allowing them to be opened or closed simultaneously during shotcreting operations, making operation convenient and precise. The water supply assembly may also include a branch water supply control valve 91, located between the other end of the water supply pipe 42 and the atomizing inlet 2021. The branch water supply control valve 91 controls the flow between the water supply pipe 42 and the atomizing inlet 2021. After shotcreting, the branch water supply control valve 91 is closed first, and after an interval of 0.5s to 1s, the main water supply control valve 93 and the main air supply control valve 94 are closed.

[0062] When the branch water supply control valve 91 is closed, water can no longer enter the atomization chamber 202 through the atomization inlet 2021, and the water supply to the shotcrete generator 20 stops. When the main water supply control valve 93 and the main air supply control valve 94, which constitute a double valve, are closed, air can no longer enter the shotcrete generator 20, and the air supply to the shotcrete generator 20 also stops. In other words, after shotcreting is completed, the water and air supply to the shotcrete generator 20 stop asynchronously. The water supply stops for 0.5s to 1s (e.g., 0.5s, 0.6s, 0.7s, 0.8s, or 1.0s) before the air supply stops. In this way, when the branch water supply control valve 91 is closed (water supply is stopped), the water remaining in the atomization chamber 202 and generation channel 201 of the shotcrete generator 20 can be completely discharged through the channel outlet 2012 under pneumatic drive, preventing the water remaining in the shotcrete generator 20 from flowing back into the conveying pipe 31 through the channel inlet 2011. As a result, in the next round of shotcreting operation, the composite colloidal material reacts with water in the conveying pipe 31 to form a gel and block the conveying pipe 31.

[0063] Of course, this application is not limited to this. In some other embodiments, the main water supply control valve 93 and the main air supply control valve 94 may not be a double valve. The main water supply control valve 93 and the main air supply control valve 94 can be controlled separately, thus eliminating the need for the aforementioned branch water supply control valve 91. Based on this, after the shotcreting is completed, the main water supply control valve 93 is closed first, and after an interval of 0.5s to 1s, the main air supply control valve 94 is closed.

[0064] Alternatively, please continue reading Figures 7-9 The water supply assembly also includes a separate water supply control valve 95, and the air supply assembly also includes a separate air supply control valve 96. The separate water supply control valve 95 is located between the high-pressure water source and the main water supply control valve 93, and the separate air supply control valve 96 is located between the high-pressure air source and the main air supply control valve 94. Both the separate water supply control valve 95 and the separate air supply control valve 96 are located on the rear side of the frame main plate and fixed to the vehicle floor plate 82. Both the separate water supply control valve 95 and the separate air supply control valve 96 can be located within the accommodating cavity. Understandably, during equipment maintenance, water supply, and air supply testing, separate water supply or separate air supply is usually required. By setting the separate water supply control valve 95 and the separate air supply control valve 96, separate water supply and separate air supply of the shotcrete device 100 can be achieved. Specifically, when water supply is required separately, the main water supply control valve 93 and the main gas supply control valve 94, which constitute the double valve, are in the open state, the separate water supply control valve 95 is opened, and the separate gas supply control valve 96 is closed; however, when gas supply is required separately, the main water supply control valve 93 and the main gas supply control valve 94, which constitute the double valve, are in the open state, the separate gas supply control valve 96 is opened, and the separate water supply control valve 95 is closed.

[0065] Please refer to some embodiments of this utility model. Figures 1-2as well as Figure 7 The carrier trolley 80 also includes a push handle 87, which is mounted on the frame main board 83 and extends toward the rear of the frame main board 83. By providing the push handle 87, the carrier trolley 80 can be easily pushed.

[0066] In some embodiments, please refer to Figures 1-6 The atomizing inlet 2021 may consist of only one unit. In this case, the water supply component, the air supply component, and the atomizing inlet 2021 can be connected via a three-way pipe 60, thereby achieving connectivity between the water supply component and the atomizing inlet 2021, as well as between the air supply component and the atomizing inlet 2021. Specifically, as... Figures 1-3 As shown, the water supply pipe 42, the third high-pressure gas delivery pipe 54, and the atomization inlet 2021 can be connected by a three-way pipe 60, thereby achieving communication between the water supply pipe 42 and the atomization inlet 2021, as well as between the third high-pressure gas delivery pipe 54 and the atomization inlet 2021. The connection is simple and convenient. Based on this, the water and high-pressure gas required for pulping are already mixed to form a gas-water mist before entering the atomization chamber 202 (within the three-way pipe 60).

[0067] In other embodiments, the atomizing inlet 2021 may include multiple inlets, such as two inlets. One atomizing inlet 2021 is connected to a water supply assembly to deliver water required for pulping into the atomizing chamber 202, and the other atomizing inlet 2021 is connected to a gas supply assembly to deliver high-pressure gas into the atomizing chamber 202. The water required for pulping and the high-pressure gas form a water mist after entering the atomizing chamber 202.

[0068] In the description of this utility model, it should be understood that the terms "inner", "outer", "front", "rear", "upper", "lower", "left", "right", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0069] In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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 shotcrete device, characterized in that, The shotcrete device includes: A storage bin, wherein a storage cavity is defined within the storage bin, and the storage bin is provided with a discharge port communicating with the storage cavity; A shotcrete generator, wherein a generating channel and an atomizing chamber are defined within the shotcrete generator, the generating channel having a channel inlet and a channel outlet, the atomizing chamber being arranged circumferentially around the generating channel, the atomizing chamber having an atomizing inlet and a plurality of atomizing outlets spaced apart from each other, the plurality of atomizing outlets being disposed between the atomizing chamber and the generating channel and distributed circumferentially along the generating channel, the atomizing chamber and the generating channel being connected through the atomizing outlets, and the channel inlet being connected to the discharge port; A negative pressure material extraction component is disposed between the discharge port and the channel inlet to drive the sprayed raw material in the storage chamber to be conveyed from the discharge port toward the channel inlet; A water-air conveying assembly, comprising a water supply assembly and an air supply assembly, wherein the water supply assembly is adapted to connect the atomizing inlet and a high-pressure water source, and the air supply assembly is adapted to connect the atomizing inlet and a high-pressure air source, and to connect the negative pressure material extraction assembly and the high-pressure air source; The vehicle body includes a floor plate and a frame main plate. The frame main plate is connected to the floor plate and extends vertically at an angle relative to the floor plate. At least a portion of the water and air conveying assembly and the storage tank are fixed to the vehicle body, and the at least a portion of the water and air conveying assembly and the storage tank are located on both sides of the frame main plate.

2. The shotcrete device according to claim 1, characterized in that, The lower edge of the frame main board is connected to the front edge of the vehicle floor. In the front-to-back direction, the frame main board extends from bottom to top and toward the vehicle floor. The storage box is located on the front side of the frame main board and is fixed to the frame main board; At least a portion of the water-air transport assembly is located on the rear side of the frame main board and fixed to the vehicle floor.

3. The shotcrete device according to claim 2, characterized in that, The vehicle body also includes a first frame side plate and a second frame side plate arranged opposite to each other in the left-right direction. The first frame side plate is connected between the left edge of the vehicle floor and the left edge of the frame main plate, and the second frame side plate is connected between the right edge of the vehicle floor and the right edge of the frame main plate. The vehicle floor, the frame main plate, the first frame side plate and the second frame side plate define a receiving cavity that is open at the top and rear. The at least part of the water and air conveying assembly is housed in the receiving cavity.

4. The shotcrete device according to claim 3, characterized in that, The carrier body also includes a frame support cover plate, which is connected between the upper edge of the first frame side plate and the upper edge of the second frame side plate, and the frame support cover plate covers the top opening of the accommodating cavity.

5. The shotcrete device according to claim 2, characterized in that, The negative pressure material extraction assembly includes a material conveying pipe, a first air amplifier, and a second air amplifier. The material conveying pipe includes a material conveying inlet and a material conveying outlet. The material conveying inlet is connected to the material outlet, and the material outlet is connected to the channel inlet. The first air amplifier is located between the material outlet and the material inlet. The first air amplifier has a first suction inlet, a first blowing outlet, and a first high-pressure gas inlet. The first suction inlet is connected to the material outlet, and the first blowing outlet is connected to the material inlet. The second air amplifier is located between the material outlet and the channel inlet. The second air amplifier has a second suction inlet, a second blowing outlet, and a second high-pressure gas inlet. The second suction inlet is connected to the material outlet, and the second blowing outlet is connected to the channel inlet. The gas supply assembly includes a distributor, a first high-pressure gas delivery pipe, a second high-pressure gas delivery pipe, and a third high-pressure gas delivery pipe. The distributor includes an input port, a first output port, a second output port, and a third output port. The input port is adapted to connect to the high-pressure gas source. The first high-pressure gas delivery pipe is connected between the first output port and the first high-pressure gas inlet. The second high-pressure gas delivery pipe is connected between the second output port and the second high-pressure gas inlet. The third high-pressure gas delivery pipe is connected between the third output port and the atomizing inlet. The distributor is located on the rear side of the frame main board and fixed to the vehicle floor. One end of the first high-pressure gas delivery pipe, one end of the second high-pressure gas delivery pipe, and one end of the third high-pressure gas delivery pipe are all located on the rear side of the frame main board to connect to the first output port, the second output port, and the third output port, respectively. The other ends of the first high-pressure gas delivery pipe, the second high-pressure gas delivery pipe, and the third high-pressure gas delivery pipe all pass through the frame main board to the front side of the frame main board to connect to the first high-pressure gas inlet, the second high-pressure gas inlet, and the atomizing inlet, respectively.

6. The shotcrete device according to claim 5, characterized in that, The water supply assembly includes a pressure reducing valve, a water supply pipe, and a pressure gauge. The pressure reducing valve has an inlet, an outlet, and a pressure gauge interface. The inlet is adapted to connect to the high-pressure water source, and the pressure gauge interface is connected to the pressure gauge. The pressure reducing valve and the pressure gauge are both located on the rear side of the main frame and fixed to the vehicle floor. One end of the water supply pipe is located on the rear side of the main frame to connect to the water outlet, and the other end of the water supply pipe passes through the main frame to the front side of the main frame to connect to the atomizing inlet.

7. The shotcrete device according to claim 6, characterized in that, The water supply assembly also includes a main water supply control valve, and the air supply assembly also includes a main air supply control valve. The main water supply control valve is located between the water inlet and the high-pressure water source, and the main air supply control valve is located between the input port and the high-pressure air source. Both the main water supply control valve and the main air supply control valve are located on the rear side of the frame main board and fixed to the vehicle floor.

8. The shotcrete device according to claim 7, characterized in that, The main water supply control valve and the main air supply control valve form a dual valve. The water supply assembly also includes a separate water supply control valve, and the air supply assembly also includes a separate air supply control valve. The separate water supply control valve is located between the high-pressure water source and the main water supply control valve, and the separate air supply control valve is located between the high-pressure air source and the main air supply control valve. Both the separate water supply control valve and the separate air supply control valve are located on the rear side of the frame main board and fixed to the vehicle floor.

9. The shotcrete device according to any one of claims 1-8, characterized in that, The carrier body also includes a push handle, which is disposed on the main frame and extends toward the rear of the main frame.

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