Solid-liquid mixing spraying device

Abstract

The application relates to the technical field of material conveying, and discloses a solid-liquid mixed spraying device, which comprises a liquid storage bin, a powder storage bin, a solid-liquid mixing bin and a spray head. The powder storage bin and the liquid storage bin are connected with each other through a first communication channel, and the solid-liquid mixing bin and the powder storage bin are connected with each other through a second communication channel. A control shaft valve is arranged, which comprises a flow control part and a driving part. The flow control part is arranged in the first communication channel, and the driving part is arranged in the second communication channel. When the driving part is driven by a liquid solvent, the driving part rotates to drive the flow control part to rotate, so that the solid powder in the second communication channel moves towards the third storage space. A compressed gas bin is arranged, which comprises a fourth storage space. The fourth storage space is connected with the second storage space and the third storage space. The solid-liquid mixed spraying device does not need to use electric energy, and the solid-liquid mixed spraying device can output a solution with uniform concentration.

Description

Technical Field

[0001] This application relates to the field of material conveying technology, and in particular to a solid-liquid mixing spraying device. Background Technology

[0002] Coal mine fires are one of the major hazards threatening safe production in mines, with spontaneous combustion of coal accounting for over 60% of these fires. The root cause of spontaneous combustion lies in the oxidation reaction between exposed coal seams and oxygen. This oxidation releases heat, causing the coal seam temperature to gradually accumulate to its ignition point, leading to a fire. To inhibit the oxidation reaction between coal seams and oxygen, chemical inhibitors (such as magnesium chloride and silicates) can be sprayed onto the coal seam surface. These inhibitors form an inert insulating film on the coal surface, blocking contact between oxygen and coal and absorbing the heat released by the oxidation reaction, thus delaying or preventing spontaneous combustion.

[0003] In related technologies, there are several existing methods for preparing and spraying chemical inhibitors into mines. The first method is to mix the solute and solvent of the chemical inhibitor outside the mine and then transport it into the mine for spraying. However, during the long-distance transportation of the solution in the pipeline, the solute in the liquid is prone to sedimentation, resulting in uneven solution concentration, which affects the inhibitory effect of the solution.

[0004] The second method involves transporting the liquid solvent and solid powder into the mine through separate pipelines, and then spraying the mixture. This method can cause the solid powder to clump due to changes in humidity within the mine, while the liquid solvent may experience flow imbalances due to pressure fluctuations, resulting in uneven concentrations of the chemical inhibitor.

[0005] The third method involves using a solid-liquid mixing spraying device to prepare chemical inhibitors on-site in the mine. However, existing solid-liquid mixing spraying devices rely on electricity for components such as powder conveyors and liquid pumps. In scenarios with abundant flammable materials (e.g., coal and methane gas in the mine), the electrical appliances can easily ignite these materials during use, resulting in poor safety. Therefore, all three existing technical solutions have shortcomings, necessitating improvements to the preparation and spraying methods of chemical inhibitors. Utility Model Content

[0006] The purpose of this application is to deliver and spray a uniformly concentrated liquid into a hazardous area and to improve the safety of the solution preparation and spraying methods.

[0007] To achieve the above objectives, this application provides a solid-liquid mixing spraying device.

[0008] The solid-liquid mixing spraying device according to this application includes: a liquid storage chamber having a first storage space therein for storing a liquid solvent; a powder storage chamber having a second storage space therein for storing solid powder; a solid-liquid mixing chamber and a spray head having a third storage space therein, the third storage space being interconnected with the first storage space via a first connecting channel, and the third storage space being interconnected with the second storage space via a second connecting channel; the liquid storage chamber and the powder storage chamber being located on the same side of the solid-liquid mixing chamber; and the third storage space also being interconnected with the first storage space via a second connecting channel. The nozzle is connected; a control shaft valve is provided with a flow control unit at one end and a drive unit at the other end. The drive unit extends into the first connecting channel, and the flow control unit extends into the second connecting channel. When the drive unit is driven by the liquid solvent in the first connecting channel, it rotates to drive the flow control unit to rotate, so that the solid powder in the second connecting channel moves toward the direction closer to the third storage space; a compressed gas chamber is provided with a fourth storage space. The fourth storage space is connected to both the first storage space and the third storage space. The compressed gas chamber is used to store compressed gas.

[0009] According to the solid-liquid mixing spraying device of this application, the internal energy of the compressed gas during expansion drives the liquid solvent to be input into the solid-liquid mixing chamber. The kinetic energy of the liquid solvent during flow can drive the control shaft valve to control the input of solid powder into the solid-liquid mixing chamber. The expansion of the compressed gas agitates the solid powder and liquid solvent to be uniformly mixed in the solid-liquid mixing chamber. Compared with the prior art, the solid-liquid mixing spraying device of this application does not require the use of electrical energy, can safely prepare a solution with uniform concentration in a hazardous area, and spray the solution into the hazardous area.

[0010] In some examples of this application, the control shaft valve further includes a shaft body spanning between the first connecting channel and the second connecting channel. The flow control unit and the drive unit are both located on the outer periphery of the shaft body. The drive unit includes a plurality of impeller plates, which are fixedly connected to the outer periphery of the shaft body. The plurality of impeller plates are arranged sequentially along the circumference of the shaft body, and a water storage gap is formed between any two adjacent impeller plates. The liquid storage chamber is located above the solid-liquid mixing chamber. Along the circumference of the control shaft valve, the impeller plate has a first sidewall adapted to be opposite the liquid storage chamber.

[0011] In some examples of this application, the flow control unit includes blades, which are spirally disposed on the outer peripheral wall of the shaft. When the drive unit is driven to rotate the control shaft valve, along the spiral feeding direction of the blades, the feeding end of the blades is disposed near the discharge port of the powder storage bin, and the discharging end of the blades is disposed near the feeding port of the solid-liquid mixing bin. The powder storage bin is disposed above the solid-liquid mixing bin.

[0012] In some examples of this application, a partition block is fixedly installed on the inner wall of the powder storage bin. The partition block divides the powder storage bin into a second storage space and a second connecting channel along the height direction of the powder storage bin. One side wall of the partition block is spaced apart from the inner peripheral wall of the powder storage bin to form the discharge port of the powder storage bin. The upper end wall of the partition block is constructed as a feeding ramp, which is inclined downward from the end of the partition block away from the discharge port to the end closer to the discharge port.

[0013] In some examples of this application, a guide block is also fixedly installed on the inner wall of the powder storage bin. The guide block is located above the discharge port and is spaced apart from the discharge port. The bottom wall of the guide block is constructed as a guide slope, which is inclined downwards from the end of the guide block away from the discharge port to the end closer to the discharge port.

[0014] In some examples of this application, the side wall of the powder storage bin is provided with a discharge port, the top wall of the solid-liquid mixing bin is provided with the inlet, the powder storage bin is located on the outer periphery of the inlet, and the discharge port is adjacent to the inlet; a connecting valve is provided at the inlet, the connecting valve is used to open or close the inlet, the connecting valve includes a sliding plate and a sealing element, the sliding plate is adapted to slide relative to the inlet in the radial direction of the inlet, and the sealing element is sealed between the sliding plate and the side wall of the inlet.

[0015] In some examples of this application, a first air inlet pipe is provided between the compressed gas chamber and the liquid storage chamber, the first air inlet pipe is provided with a first air inlet valve, and the top wall of the liquid storage chamber is provided with a first air inlet connecting the first air inlet pipe and the second storage space; a second air inlet pipe is provided between the compressed gas chamber and the solid-liquid mixing chamber, the second air inlet pipe is provided with a second air inlet valve, the second air inlet pipe passes into the solid-liquid mixing chamber, the second air inlet pipe is provided with an exhaust port, the exhaust port is located near the bottom wall of the solid-liquid mixing chamber, and the solid-liquid mixing chamber is also provided with a vent connecting to the external environment.

[0016] In some examples of this application, a third air inlet pipe is provided between the compressed gas chamber and the solid-liquid mixing chamber. The third air inlet pipe is provided with a third air inlet valve. The top wall of the solid-liquid mixing chamber is provided with a second air inlet that connects the third air inlet pipe and the third storage space. When one of the second air inlet valve and the third air inlet valve is in the open state, the other of the second air inlet valve and the third air inlet valve is in the closed state.

[0017] In some examples of this application, the second air intake pipe includes a longitudinal air intake branch pipe and a transverse air intake branch pipe disposed in the solid-liquid mixing chamber, the longitudinal air intake branch pipe and the transverse air intake branch pipe being arranged crosswise, and at least one of the longitudinal air intake branch pipe and the transverse air intake branch pipe being provided with the exhaust port.

[0018] In some examples of this application, the solid-liquid mixing spraying device further includes: a replenishment tank, wherein the replenishment tank is provided with a fifth storage space, the fifth storage space is connected to the first storage space, and the fourth storage space is connected to the fifth storage space, and the replenishment tank is used to store liquid solvent. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a solid-liquid mixing spraying device according to an embodiment of this application; Figure 2 This is a front view of the control shaft valve according to an embodiment of this application; Figure 3 This is a cross-sectional view of the control shaft valve installed in the first communication channel according to an embodiment of this application; Figure 4 This is a cross-sectional view of the solid-liquid mixing chamber according to an embodiment of this application; Figure 5 This is a cross-sectional view of the powder storage bin according to an embodiment of this application.

[0020] In the diagram, 100 represents a solid-liquid mixing spraying device. 1. Liquid storage compartment; 11. First storage space; 2. Powder storage bin; 21. Second storage space; 22. Divider block; 221. Feeding ramp; 23. Guide block; 231. Guide ramp; 24. Discharge port; 25. Discharge outlet; 3. Solid-liquid mixing chamber; 31. Third storage space; 32. Connecting valve; 41. First connecting channel; 42. Second connecting channel; 5. Control shaft valve; 51. Flow control unit; 52. Drive unit; 521. Impeller plate; 53. Shaft body; 6. Compressed gas chamber; 61. Fourth storage space; 62. First intake pipe; 63. First intake valve; 64. Second intake pipe; 641. Exhaust port; 642. Longitudinal intake branch pipe; 643. Lateral intake branch pipe; 65. Second intake valve; 7. Vehicle body; 8. Liquid replenishment tank; 81. Fifth storage space; 9. Nozzle. Detailed Implementation

[0021] The specific embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but are not intended to limit the scope of this application.

[0022] like Figures 1-5 As shown in the figure, this application discloses a solid-liquid mixing spraying device 100, which is used to prepare and spray large doses of solution on-site in different situations. For example, the solid-liquid mixing spraying device 100 of this application can be used to prepare and spray chemical inhibitors in coal mines.

[0023] like Figures 1-5 As shown, the solid-liquid mixing spraying device 100 according to an embodiment of this application includes: a liquid storage chamber 1, a powder storage chamber 2, a solid-liquid mixing chamber 3, a nozzle 9, a control shaft valve 5, a compressed gas chamber 6, and a vehicle body 7. The liquid storage chamber 1, the powder storage chamber 2, the solid-liquid mixing chamber 3, and the compressed gas chamber 6 are all mounted on the vehicle body 7. The vehicle body 7 can serve as a support carrier for each component of the solid-liquid mixing spraying device 100, and the vehicle body 7 has wheels, which allows the solid-liquid mixing spraying device 100 to move easily between different areas, thereby improving the flexibility of use of the solid-liquid mixing spraying device 100.

[0024] The liquid storage chamber 1 has a first storage space 11 for storing liquid solvents, such as water. It also has a water inlet, allowing workers to inject liquid solvents into the liquid storage chamber 1 for solution mixing. The powder storage chamber 2 has a second storage space 21 for storing solid powders, such as magnesium chloride or silicates. It also has a filling port, allowing workers to inject solid powders into the powder storage chamber 2 for solution mixing.

[0025] Furthermore, a third storage space 31 is provided within the solid-liquid mixing chamber 3. The third storage space 31 is interconnected with the first storage space 11 via a first connecting channel 41. Liquid solvent in the liquid storage chamber 1 can be injected into the solid-liquid mixing chamber 3 through the first connecting channel 41. The third storage space 31 is interconnected with the second storage space 21 via a second connecting channel 42. Solid powder in the powder storage chamber 2 can be injected into the solid-liquid mixing chamber 3 through the second connecting channel 42. The solid powder and liquid solvent are mixed in the solid-liquid mixing chamber 3 to form a solution. Both the liquid storage chamber 1 and the powder storage chamber 2 are located on the same side of the solid-liquid mixing chamber 3, for example, both the liquid storage chamber 1 and the powder storage chamber 2 are located on the outer periphery or upper side of the solid-liquid mixing chamber 3.

[0026] The third storage space 31 is also connected to the nozzle 9, allowing the prepared solution to be sprayed onto a preset area. In some specific embodiments, an output pipe is provided between the solid-liquid mixing chamber 3 and the nozzle 9. This output pipe extends the spray radius of the solid-liquid mixing spraying device 100, thereby improving its ease of use. Furthermore, the output pipe is positioned near the bottom of the solid-liquid mixing chamber 3 at its output end to ensure that as much solution as possible is output to the nozzle 9. Additionally, a control valve is provided on the output pipe to control the connection or disconnection of the output pipe, allowing the solid-liquid mixing spraying device 100 to selectively spray the solution according to spraying requirements.

[0027] A flow control unit 51 is provided at one end of the control shaft valve 5. A drive unit 52 is provided at the other end of the control shaft valve 5. The flow control unit 51 extends into the second connecting channel 42, and the drive unit 52 extends into the first connecting channel 41. When the drive unit 52 is driven by the liquid solvent in the first connecting channel 41, it rotates around the central axis of the control shaft valve 5 to drive the flow control unit 51 to rotate, so that the solid powder in the second connecting channel 42 moves toward the direction closer to the third storage space 31. Furthermore, the drive unit 52 also controls the flow rate of the solid powder in the second connecting channel 42 through the flow control unit 51.

[0028] Specifically, the compressed gas chamber 6 has a fourth storage space 61. The compressed gas chamber 6 is used to store compressed gas, which can be compressed air. Of course, in some applications, to prevent the compressed gas from reacting chemically with solid powders or liquid solvents, the compressed gas can also be compressed carbon dioxide, compressed helium, etc. The fourth storage space 61 is connected to the first storage space 11. When the compressed gas in the compressed gas chamber 6 is input into the liquid storage chamber 1 under its own pressure, the compressed gas expands and increases the pressure inside the liquid storage chamber 1. The compressed gas can then output the liquid solvent in the liquid storage chamber 1 to the solid-liquid mixing chamber 3.

[0029] When the liquid solvent flows in the first connecting channel 41, the kinetic energy of the liquid solvent drives the drive unit 52 to rotate around the central axis of the control shaft valve 5. In turn, the drive unit 52 drives the flow control unit 51 to rotate around the central axis of the control shaft valve 5. The flow control unit 51 controls the solid powder in the second connecting channel 42 to flow from the powder storage chamber 2 to the solid-liquid mixing chamber 3. Since the drive unit 52 and the flow control unit 51 are respectively located at both ends of the control shaft valve 5, the drive unit 52 and the flow control unit 51 rotate at the same speed. When the drive unit 52 and the flow control unit 51 are at the same speed, by keeping the ratio of the flow rate in the first connecting channel 41 to the flow rate in the second storage space 21 a fixed value, it is possible to achieve the technical effect that when the drive unit 52 is at any speed, the flow rate of the liquid solvent and the flow rate of the solid powder input into the solid-liquid mixing chamber 3 are both at a preset ratio. Thus, the solution concentration in the solid-liquid mixing chamber 3 can be controlled to a fixed value, so that the solution concentration meets the spraying requirements.

[0030] Furthermore, the fourth storage space 61 is also connected to the third storage space 31. After the compressed gas in the compressed gas chamber 6 is input into the solid-liquid mixing chamber 3, the volume of the compressed gas increases and the pressure decreases. The compressed gas generates bubbles in the liquid in the solid-liquid mixing chamber 3. During the expansion of the bubbles, the liquid can be stirred, which promotes the solid powder to dissolve more evenly in the liquid solvent, thereby improving the concentration uniformity of the solution output by the solid-liquid mixing spraying device 100.

[0031] Therefore, by utilizing the internal energy of the compressed gas during expansion to drive the liquid solvent into the solid-liquid mixing chamber 3, the kinetic energy of the liquid solvent during flow can drive the control shaft valve 5 to control the solid powder to be input into the solid-liquid mixing chamber 3 at a preset ratio. Moreover, the expansion of the compressed gas agitates the solid powder and liquid solvent to mix evenly in the solid-liquid mixing chamber 3. Compared with the prior art, the solid-liquid mixing spraying device 100 of this application does not require the use of electrical energy, can safely prepare a solution with uniform concentration in a dangerous area, and spray the solution into the dangerous area.

[0032] like Figure 1 , Figure 2 As shown, in some embodiments of this application, the control shaft valve 5 further includes a shaft 53, which spans between the first connecting channel 41 and the second connecting channel 42. The flow control unit 51 and the drive unit 52 are both located on the outer periphery of the shaft 53. The drive unit 52 includes a plurality of impeller plates 521, which are fixedly connected to the outer periphery of the shaft 53. The plurality of impeller plates 521 are arranged sequentially along the circumference of the shaft 53, and a water storage gap is formed between any two adjacent impeller plates 521. The liquid storage chamber 1 is located above the solid-liquid mixing chamber 3, and the liquid solvent in the liquid storage chamber 1 can flow from top to bottom along the circumference of the control shaft valve 5. The impeller plate 521 has a first sidewall that is suitable to be opposite to the inlet of the first connecting channel 41.

[0033] like Figure 3 As shown, when the liquid solvent flows in the first connecting channel 41, the liquid solvent can wash the first side wall. The kinetic energy and gravitational potential energy of the liquid solvent drive the impeller plate 521 to rotate around the central axis of the control shaft valve 5, thereby driving the shaft body 53 to rotate around the central axis of the control shaft valve 5. In turn, the shaft body 53 drives the flow control unit 51 to rotate. The rotation speed of the drive unit 52 is positively correlated with the flow rate of the liquid solvent in the first connecting channel 41. This can achieve the technical effect of controlling the flow rate of solid powder in the second connecting channel 42 through the flow control unit 51 when the drive unit 52 is driven.

[0034] like Figure 1 , Figure 2 As shown, in some embodiments of this application, the flow control unit 51 includes blades, which are spirally disposed on the outer peripheral wall of the shaft 53. That is, the blades and the sidewall of the second connecting channel 42 form a spiral feeder. Thus, the drive unit 52 can serve as the drive source of the spiral feeder, and the feed rate of the spiral feeder is linearly related to the rotational speed of the blades.

[0035] When the drive unit 52 is driven and drives the control shaft valve 5 to rotate, along the spiral feeding direction of the blades, the feeding end of the blades is positioned close to the discharge port 24 of the powder storage bin 2, and the discharge end of the blades is positioned close to the inlet of the solid-liquid mixing bin 3. This allows the solid powder to be transported from the discharge port 24 of the powder storage bin 2 to the inlet of the solid-liquid mixing bin 3 along the spiral feeding direction of the blades. The powder storage bin 2 is positioned above the solid-liquid mixing bin 3, and the solid powder can be transported towards the solid-liquid mixing bin 3 under the action of gravity, which reduces the difficulty of transporting the powder from the powder storage bin 2 to the solid-liquid mixing bin 3.

[0036] like Figure 5 As shown, in some embodiments of this application, a partition block 22 is fixedly installed on the inner wall of the powder storage bin 2. The partition block 22 divides the powder storage bin 2 into a second storage space 21 and a second connecting channel 42 along the height direction of the powder storage bin 2. By simultaneously forming the second storage space 21 and the second connecting channel 42 within the powder storage bin 2, no additional pipeline is required between the powder storage bin 2 and the solid-liquid mixing bin 3, making the structure of the solid-liquid mixing spraying device 100 more compact. One side wall of the partition block 22 is spaced apart from the inner peripheral wall of the powder storage bin 2 to form the discharge port 24 of the powder storage bin 2. The powder in the second storage space 21 can fall from the discharge port 24 into the second connecting channel 42.

[0037] The upper wall of the separator 22 is constructed as a feeding ramp 221, which is inclined downwards from the end of the separator 22 furthest from the outlet 24 to the end closest to the outlet 24. Under the action of gravity, the solid powder can slide down the feeding ramp 221 to the outlet 24, and the feeding ramp 221 can reduce the difficulty of the solid powder sliding to the outlet 24.

[0038] like Figure 5 As shown, in some embodiments of this application, a guide block 23 is also fixedly installed on the inner wall of the powder storage bin 2. The guide block 23 is located above the discharge port 24 and is spaced apart from the discharge port 24. The bottom wall of the guide block 23 is constructed as a guide slope 231. From the end of the guide block 23 away from the discharge port 24 to the end near the discharge port 24, the guide slope 231 is inclined downward. The guide block 23 can prevent excessive solid powder from accumulating above the discharge port 24 and clogging the discharge port 24.

[0039] Furthermore, such as Figure 5 As shown, the side wall of the powder storage bin 2 is provided with a discharge port 25, which can be used as the output port of the second connecting channel 42. The top wall of the solid-liquid mixing bin 3 is provided with a feed port. The powder storage bin 2 is located on the outer periphery of the feed port, and the discharge port 25 is adjacent to the feed port. After the solid powder is discharged from the discharge port 25, it falls into the feed port.

[0040] A connecting valve 32 is provided at the feed inlet, which is used to open or close the feed inlet. When the feed inlet is open, solid powder can enter the solid-liquid mixing chamber 3. The connecting valve 32 includes a sliding plate and a sealing element. The sliding plate is adapted to slide radially relative to the feed inlet. It should be noted that the sliding plate can be pushed by an operator or by an electric push rod. By pushing the sliding plate forward, it blocks the feed inlet, preventing solid powder from passing through, thus achieving the technical effect of closing the feed inlet. Conversely, by pushing the sliding plate backward, it no longer blocks the feed inlet, no longer preventing solid powder from passing through, thus achieving the technical effect of opening the feed inlet. It should be understood that the forward and reverse movement directions of the sliding plate only represent opposite directions, and the specific movement direction of the sliding plate can be set according to the actual structure of the solid-liquid mixing spraying device 100.

[0041] Furthermore, the seal is installed between the sliding plate and the side wall of the inlet. The seal can be constructed as a rubber ring or an airtight ring. By sealing the gap between the sliding plate and the side wall of the inlet, when the connecting valve 32 closes the inlet, a sealed space can be formed inside the solid-liquid mixing chamber 3, which can reduce the leakage of compressed gas inside the solid-liquid mixing chamber 3 and thus maintain the pressure inside the solid-liquid mixing chamber 3.

[0042] like Figure 1 As shown, in some embodiments of this application, a first air inlet pipe 62 is provided between the compressed gas chamber 6 and the liquid storage chamber 1. The first air inlet pipe 62 may be equipped with a first air inlet valve 63, which is used to control the opening and closing of the first air inlet pipe 62 to achieve the selective connection effect between the compressed gas chamber 6 and the liquid storage chamber 1. Specifically, when it is necessary to inject liquid solvent into the solid-liquid mixing chamber 3, the first air inlet valve 63 can be switched to the open state, connecting the first air inlet pipe 62 with the compressed gas chamber 6 and the liquid storage chamber 1. Compressed gas enters the liquid storage chamber 1 and drives the liquid in the liquid storage chamber 1 to flow into the solid-liquid mixing chamber 3. After the liquid solvent has been injected into the solid-liquid mixing chamber 3, the first air inlet valve 63 can be switched to the closed state, blocking the first air inlet pipe 62 from entering the compressed gas chamber 6 and the liquid storage chamber 1, preventing compressed gas from entering the liquid storage chamber 1.

[0043] Furthermore, the top wall of the liquid storage chamber 1 is provided with a first air inlet that connects the first air inlet pipe 62 and the second storage space 21. By setting the first air inlet on the top wall of the liquid storage chamber 1, after the compressed gas enters the liquid storage chamber 1 from the first air inlet, the compressed gas does not pass through the liquid solvent in the liquid storage chamber 1. This can prevent the compressed gas from generating bubbles in the liquid solvent, which would increase the turbulence in the liquid solvent. In this way, the liquid supply from the liquid storage chamber 1 to the solid-liquid mixing chamber 3 can be avoided.

[0044] Furthermore, such as Figure 1 As shown, a second air inlet pipe 64 is provided between the compressed gas chamber 6 and the solid-liquid mixing chamber 3. The second air inlet pipe 64 is equipped with a second air inlet valve 65, which controls the opening and closing of the second air inlet pipe 64 to achieve selective connection between the compressed gas chamber 6 and the solid-liquid mixing chamber 3. Specifically, when the liquid solvent and solid powder in the solid-liquid mixing chamber 3 need to be mixed to form a solution, or when the pressure in the solid-liquid mixing chamber 3 needs to be increased so that the solution can be sprayed from the nozzle 9, the second air inlet valve 65 can be switched to the open state, connecting the second air inlet pipe 64 to the compressed gas chamber 6 and the solid-liquid mixing chamber 3. Compressed gas enters the solid-liquid mixing chamber 3 and expands in the liquid within it, agitating the liquid and dissolving the solid powder in the liquid solvent. When the solution concentration in the solid-liquid mixing chamber 3 becomes uniform, or when the pressure in the solid-liquid mixing chamber 3 reaches a preset pressure, the second air inlet valve 65 can be switched to the closed state to reduce leakage of compressed gas from the compressed gas chamber 6.

[0045] Furthermore, the second air inlet pipe 64 extends into the solid-liquid mixing chamber 3. The second air inlet pipe 64 is provided with an exhaust port 641, which is located near the bottom wall of the solid-liquid mixing chamber 3. This arrangement ensures that the exhaust port 641 is positioned below the liquid surface in the solid-liquid mixing chamber 3, allowing compressed gas to enter the solid-liquid mixing chamber 3 from below the liquid surface. This allows the compressed gas to expand and form bubbles in the liquid, thereby agitating the liquid and enabling the solid powder to dissolve fully in the liquid solvent.

[0046] In addition, the solid-liquid mixing chamber 3 can also be equipped with a vent that connects to the external environment. The vent is used to release the gas inside the solid-liquid mixing chamber 3 to balance the air pressure between the solid-liquid mixing chamber 3 and the external environment. The vent can be located near the top wall of the solid-liquid mixing chamber 3 to prevent liquid leakage. By using the vent to reduce the pressure inside the solid-liquid mixing chamber 3, it is possible to avoid excessive pressure inside the solid-liquid mixing chamber 3, which would make it difficult for liquid solvents and solid powders to flow into the solid-liquid mixing chamber 3. At the same time, it can be ensured that the solid-liquid mixing chamber 3 can be reset to the initial pressure value before the solid-liquid mixing spraying device 100 is used.

[0047] In some other embodiments, a third air inlet pipe can be provided between the compressed gas chamber 6 and the solid-liquid mixing chamber 3. The third air inlet pipe is equipped with a third air inlet valve. The top wall of the solid-liquid mixing chamber 3 is provided with a second air inlet connecting the third air inlet pipe and the third storage space 31. That is, the compressed gas chamber 6 can inject compressed gas into the solid-liquid mixing chamber 3 from the top. When one of the second air inlet valve 65 and the third air inlet valve is in the open state, the other of the second air inlet valve 65 and the third air inlet valve is in the closed state. Specifically, when the second air inlet valve 65 is in the open state and the third air inlet valve is in the closed state, the vent of the solid-liquid mixing chamber 3 is in the open state. The compressed gas chamber 6 injects compressed gas into the solid-liquid mixing chamber 3 from the bottom end of the solid-liquid mixing chamber 3. The compressed gas expands in the liquid at the bottom of the solid-liquid mixing chamber 3 to agitate the liquid, thereby mixing the solid powder and the liquid solvent.

[0048] When the second air inlet valve 65 is closed and the third air inlet valve is open, the vent of the solid-liquid mixing chamber 3 is closed. The compressed gas chamber 6 injects compressed gas into the solid-liquid mixing chamber 3 from the top. The compressed gas can increase the pressure inside the solid-liquid mixing chamber 3. When the pressure inside the solid-liquid mixing chamber 3 reaches the preset pressure, the solution inside the solid-liquid mixing chamber 3 can be sprayed out from the nozzle 9 under pressure by opening the control valve between the solid-liquid mixing chamber 3 and the nozzle 9.

[0049] like Figure 4As shown, in some embodiments of this application, the second air intake pipe 64 includes a longitudinal air intake branch pipe 642 and a transverse air intake branch pipe 643 disposed within the solid-liquid mixing chamber 3. The longitudinal air intake branch pipe 642 and the transverse air intake branch pipe 643 are arranged intersectingly and are located in the same plane, such as... Figure 4 As shown, the transverse air intake branch pipe 643 is along the length direction of the solid-liquid mixing spraying device 100 (i.e., Figure 4 The longitudinal air intake branch pipe 642 extends along the width direction of the solid-liquid mixing spraying device 100 (i.e., in the left-right direction). Figure 4 (Extend settings in the front and back directions).

[0050] At least one of the longitudinal intake branch pipe 642 and the transverse intake branch pipe 643 is provided with an exhaust port 641. It should be noted that the one of the longitudinal intake branch pipe 642 and the transverse intake branch pipe 643 that is not provided with an exhaust port 641 can be used as the air guide pipe of the other. Preferably, both the longitudinal intake branch pipe 642 and the transverse intake branch pipe 643 are provided with an exhaust port 641.

[0051] Furthermore, at least one of the longitudinal air intake branch pipes 642 and the transverse air intake branch pipes 643 can be configured as multiple. For example, multiple longitudinal air intake branch pipes 642 can be configured, with multiple longitudinal air intake branch pipes 642 arranged sequentially at intervals along the length direction of the solid-liquid mixing spray device 100; or multiple transverse air intake branch pipes 643 can be configured, with multiple transverse air intake branch pipes 643 arranged sequentially at intervals along the width direction of the solid-liquid mixing spray device 100; or both longitudinal air intake branch pipes 642 and transverse air intake branch pipes 643 can be configured as multiple. By extending the longitudinal air intake branch pipes 642 and the transverse air intake branch pipes 643 in different directions, the exhaust ports 641 can be evenly distributed at the bottom of the solid-liquid mixing chamber 3. Compressed gas can enter the solid-liquid mixing chamber 3 from different areas, thereby increasing the diffusion area of ​​compressed gas in the solid-liquid mixing chamber 3. This can improve the mixing uniformity of solid powder and liquid solvent and prevent powder agglomeration in local areas of the solid-liquid mixing chamber 3.

[0052] like Figure 1 As shown, in some embodiments of this application, the solid-liquid mixing spraying device 100 may further include: a replenishment tank 8, which has a fifth storage space 81 for storing liquid solvent. The fifth storage space 81 is connected to the first storage space 11. In some embodiments, the fifth storage space 81 and the first storage space 11 are connected via a replenishment pipeline. The liquid solvent in the replenishment tank 8 can be input into the liquid storage tank 1. Furthermore, the fourth storage space 61 is connected to the fifth storage space 81, and the compressed gas tank 6 can inject compressed gas into the replenishment tank 8. The pressure generated by the compressed gas can drive the liquid solvent in the replenishment tank 8 to flow into the liquid storage tank 1.

[0053] As the area to be sprayed with the solution varies, the solid-liquid mixing spraying device 100 can be equipped with one or more replenishment chambers 8. By replenishing the liquid storage chamber 1 with liquid through the replenishment chamber 8, the solid-liquid mixing spraying device 100 can meet the needs of mixing and producing a larger dose of solution in one working cycle. This eliminates the need for frequent start-ups and shutdowns of the solid-liquid mixing spraying device 100, thereby improving the user experience of the solid-liquid mixing spraying device 100.

[0054] According to some specific embodiments of this application, the components of the above embodiments can be made of the following materials: The vehicle body 7 can be composed of a Q345B low-alloy steel frame and a carburized and quenched ZG40CrMnMo wheel set, so that the vehicle body 7 can balance structural strength and wear resistance. The portion of the structure forming the second storage space 21 in the powder storage bin 2 can be made of 304 stainless steel lined with a tungsten carbide coating, and the portion of the structure forming the second connecting channel 42 in the powder storage bin 2 can be made of 304 stainless steel lined with high-purity alumina ceramic, thus enabling the powder storage bin 2 to effectively resist chloride corrosion and particle wear. The replenishment bin 8 is made of 316L stainless steel and electropolished, or lined with PTFE (Polytetrafluoroethylene- polytetrafluoroethylene The carbon steel used in the liquid replenishment chamber 8 is designed to prevent the liquid replenishment chamber 8 from being corroded by the solution and to reduce the residual liquid on the inner wall of the liquid storage chamber 1.

[0055] The solid-liquid mixing chamber 3 is made of duplex stainless steel 2205 with an internal silicon carbide wear-resistant lining. This ensures that the solid-liquid mixing chamber 3 meets the requirements for stress corrosion resistance under chloride ion environment and can withstand the high-speed erosion of the solid-liquid mixture. The main structure of the nozzle 9 uses Hastelloy C-276, and the nozzle of the nozzle 9 uses dense silicon carbide material to ensure that the nozzle 9 can withstand high-temperature, high-speed droplet impact and halide ion corrosion. The compressed gas chamber 6 is mainly made of Q345R pressure vessel steel, and the inner wall is coated with an epoxy ceramic coating for insulation and corrosion protection. The liquid storage chamber 1 is made of 316L stainless steel, and the inner wall of the liquid storage chamber 1 is hard chrome plated to reduce the surface roughness of the liquid storage chamber 1, thereby resisting turbulent cavitation.

[0056] The shaft 53 of the control valve 5 is made of 17-4PH precipitation-hardening stainless steel plated with nickel-phosphorus alloy, which ensures high fatigue strength of the control valve 5 while reducing fretting wear. The flow control unit 51 is made of high-vanadium high-speed steel with laser-clad tungsten carbide cobalt coating to significantly improve the red hardness and abrasive wear resistance of the control valve 5.

[0057] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of this application, and these improvements and substitutions should also be considered within the scope of protection of this application.

Claims

1. A solid-liquid mixing spraying device, characterized in that, include: A liquid storage chamber, which has a first storage space, is used to store liquid solvents; A powder storage bin, which has a second storage space, is used to store solid powder. The solid-liquid mixing chamber and the nozzle have a third storage space inside. The third storage space is connected to the first storage space through a first connecting channel and to the second storage space through a second connecting channel. The liquid storage chamber and the powder storage chamber are located on the same side of the solid-liquid mixing chamber. The third storage space is also connected to the nozzle. A control shaft valve is provided at one end with a flow control unit and at the other end with a drive unit. The drive unit extends into the first connecting channel and the flow control unit extends into the second connecting channel. When the drive unit is driven by the liquid solvent in the first connecting channel, it rotates to drive the flow control unit to rotate, so that the solid powder in the second connecting channel moves toward the direction closer to the third storage space. A compressed gas chamber has a fourth storage space inside, which is connected to both the first and third storage spaces. The compressed gas chamber is used to store compressed gas.

2. The solid-liquid mixing spraying device according to claim 1, characterized in that, The control shaft valve also includes a shaft body, which spans between the first connecting channel and the second connecting channel, and the flow control unit and the drive unit are both located on the outer periphery of the shaft body; The drive unit includes multiple impeller plates, which are fixedly connected to the outer peripheral wall of the shaft. The multiple impeller plates are arranged sequentially along the circumference of the shaft, and a water storage gap is formed between any two adjacent impeller plates. The liquid storage chamber is located above the solid-liquid mixing chamber. Along the circumference of the control shaft valve, the impeller plate has a first side wall adapted to be opposite to the liquid storage chamber.

3. The solid-liquid mixing spraying device according to claim 2, characterized in that, The flow control unit includes blades, which are spirally disposed on the outer peripheral wall of the shaft. When the drive unit is driven to rotate the control shaft valve, along the spiral feeding direction of the blades, the feeding end of the blades is located near the discharge port of the powder storage bin, and the discharge end of the blades is located near the feeding port of the solid-liquid mixing bin. The powder storage bin is located above the solid-liquid mixing bin.

4. The solid-liquid mixing spraying device according to claim 3, characterized in that, A partition block is fixedly installed on the inner wall of the powder storage bin. The partition block divides the powder storage bin into a second storage space and a second connecting channel along the height direction of the powder storage bin. One side wall of the partition block is spaced apart from the inner peripheral wall of the powder storage bin to form the discharge port of the powder storage bin. The upper wall of the partition block is constructed as a feeding ramp, which is inclined downwards from the end of the partition block furthest from the outlet to the end closest to the outlet.

5. The solid-liquid mixing spraying device according to claim 4, characterized in that, The inner wall of the powder storage silo is also fixedly installed with a guide block. The guide block is located above the discharge port and is spaced apart from the discharge port. The bottom wall of the guide block is constructed as a guide slope. The guide slope is inclined downward from the end of the guide block away from the discharge port to the end closer to the discharge port.

6. The solid-liquid mixing spraying device according to claim 4, characterized in that, The side wall of the powder storage silo is provided with a discharge port, the top wall of the solid-liquid mixing silo is provided with the inlet, the powder storage silo is located on the outer periphery of the inlet, and the discharge port is adjacent to the inlet. A connecting valve is provided at the feed inlet. The connecting valve is used to open or close the feed inlet. The connecting valve includes a sliding plate and a sealing element. The sliding plate is adapted to slide relative to the feed inlet in the radial direction. The sealing element is sealed between the sliding plate and the side wall of the feed inlet.

7. The solid-liquid mixing spraying device according to claim 1, characterized in that, A first air inlet pipe is provided between the compressed gas chamber and the liquid storage chamber. The first air inlet pipe is equipped with a first air inlet valve. The top wall of the liquid storage chamber is provided with a first air inlet that connects the first air inlet pipe and the second storage space. A second air inlet pipe is provided between the compressed gas chamber and the solid-liquid mixing chamber. The second air inlet pipe is equipped with a second air inlet valve. The second air inlet pipe passes through the solid-liquid mixing chamber and is equipped with an exhaust port. The exhaust port is located near the bottom wall of the solid-liquid mixing chamber. The solid-liquid mixing chamber is also equipped with a vent that connects to the external environment.

8. The solid-liquid mixing spraying device according to claim 7, characterized in that, A third air inlet pipe is provided between the compressed gas chamber and the solid-liquid mixing chamber. The third air inlet pipe is equipped with a third air inlet valve. The top wall of the solid-liquid mixing chamber is provided with a second air inlet that connects the third air inlet pipe and the third storage space. When one of the second air inlet valve and the third air inlet valve is in the open state, the other of the second air inlet valve and the third air inlet valve is in the closed state.

9. The solid-liquid mixing spraying device according to claim 7, characterized in that, The second air intake pipe includes a longitudinal air intake branch pipe and a transverse air intake branch pipe disposed in the solid-liquid mixing chamber. The longitudinal air intake branch pipe and the transverse air intake branch pipe are arranged in a cross manner, and at least one of the longitudinal air intake branch pipe and the transverse air intake branch pipe is provided with the exhaust port.

10. The solid-liquid mixing spraying device according to claim 1, characterized in that, Also includes: The replenishment tank has a fifth storage space, which is connected to the first storage space, and the fourth storage space is connected to the fifth storage space. The replenishment tank is used to store liquid solvents.

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