A device for uniformly mixing basalt waste stone powder and fly ash

Abstract

This utility model belongs to the field of basalt processing technology, specifically relating to a device for uniformly mixing basalt waste stone powder and fly ash. It includes: an inclined silo with two parallel stirring shafts rotating inside and a turning paddle installed on the outside of the two stirring shafts; a drive mechanism connected to the stirring shafts outside the silo; a sinking trough located on the bottom wall of the silo, with an elastic inner lining and a rubber airbag arranged vertically inside; an air supply pipe connected to the rubber airbag, which is connected to an air supply mechanism for intermittent expansion of the rubber airbag; and a drive mechanism including a synchronous gearbox, a coupling, and a servo motor connected axially to the stirring shafts. The synchronous gearbox is connected to the two stirring shafts. This utility model utilizes the intermittent expansion of the rubber airbags to briefly impact and lift nearby clumps of raw materials, facilitating the addition of these clumps into the mixing process and promoting their agitation.

Description

Technical Field

[0001] This utility model belongs to the field of basalt processing technology, specifically relating to a device for uniformly mixing basalt waste stone powder and fly ash. Background Technology

[0002] Basalt powder and fly ash are usually waste products from their respective production processes, such as mining and coal-fired power generation. Mixing these two wastes for specific purposes can greatly reduce the amount that needs to be safely landfilled or stockpiled, saving land resources and reducing the environmental burden. Moreover, the mixture is mainly used in environmentally friendly building materials, soil improvement, backfill materials and other fields.

[0003] In both mineral powder processing stages, the mineral powder raw materials are poured into a relatively closed mixing tank, and the stirring blades are driven by a motor to stir and mix. For example, a search reveals a Chinese utility model with announcement number CN208320576U, which describes a mixing device for mineral powder. This device uses a stirring shaft that can be raised and lowered. It rotates horizontally on one side and moves up and down in the tank on the other side to fully mix the mineral powder, ensuring that there are no dead corners in the mixing and guaranteeing the mixing effect.

[0004] When mixing mineral powder, the stirring shaft drives the stirring paddle to rotate and reciprocate up and down under the drive of the motor. However, most of the two mineral powders contain moisture, and after sticking together, they are prone to agglomerate and deposit at the bottom of the mixing tank. This makes it difficult for the agglomerated mineral powder to come into contact with the stirring paddle inside the mixing tank. In addition, the stirring paddle generally does not stick to the wall, making it difficult to turn over the agglomerated mineral powder inside the mixing tank. Utility Model Content

[0005] The purpose of this invention is to provide a device for uniformly mixing basalt waste stone powder and fly ash, which can use intermittently expanding rubber airbags to briefly impact and lift nearby raw material clumps, making it easier to add the raw material clumps into the mixing process and promoting the turning of the raw material clumps.

[0006] The specific technical solution adopted by this utility model is as follows: A device for uniformly mixing basalt waste stone powder and fly ash, comprising: The hopper is tilted, and inside the hopper are two parallel stirring shafts and a tipping paddle installed on the outside of the two stirring shafts. The outside of the hopper is provided with a drive mechanism connected to the stirring shafts. The sinking trough located on the bottom wall of the silo has an elastic inner lining layer and a rubber airbag arranged vertically inside it. An air supply pipe is connected to the rubber airbag, and the air supply pipe is connected to an air supply mechanism for intermittent inflation of the rubber airbag.

[0007] As an optional solution, the drive mechanism includes a synchronous gearbox, a coupling, and a servo motor that are sequentially connected to the stirring shaft along the axial direction; The synchronous gearbox is connected to the two stirring shafts, and the output end of the servo motor is axially connected to the middle of the coupling.

[0008] As an optional solution, the gas supply mechanism includes a main gas pipe, a pressure stabilizing tank, and a gas pump that are sequentially connected to the gas transmission pipe; Both the pressure stabilizing tank and the air pump are located outside the silo.

[0009] As an alternative, the top of the silo is connected to a feed hopper, and the bottom of the silo is connected to a discharge valve spaced apart from the sinking trough.

[0010] As an alternative, a slanted support bracket spaced apart from the gas supply pipe is installed on the outside of the hopper, and a bearing seat is rotatably connected to the end of each of the two stirring shafts away from the drive mechanism.

[0011] As an optional solution, the top of the synchronous gearbox is provided with an oil filling port, and a cooling fan for cooling the synchronous gearbox is installed inside the inclined bracket.

[0012] As an alternative, the port of the gas supply pipe away from the gas supply mechanism is connected to an electric gas valve, and a gap is left between the electric gas valve and the inclined bracket.

[0013] The technical effects achieved by this utility model are as follows: This invention incorporates three sinking troughs to agitate the clumps of raw materials. A controller activates an intermittent air supply mechanism to inflate the rubber airbags. The inflated airbags lift the elastic liner, briefly impacting nearby clumps and using inertia to suspend them in the air. This facilitates the addition of the clumps to the mixing process, promoting agitation. Furthermore, the elastic liner, made of polyurethane rubber, withstands friction within the silo and provides some friction resistance, retaining some material and allowing it to spread evenly on the sloping bottom wall of the silo, thus increasing the mixing area.

[0014] This invention opens the electric air valve at set intervals during the mixing process, allowing air from the pressure tank to flow through the main air pipe, the air delivery pipe, and the rubber air bladder before being discharged from the electric air valve. This airflow carries away the heat from the rubber air bladder, lowering its temperature and creating a temperature difference between the rubber air bladder and the elastic inner lining. This helps dissipate heat from the elastic inner lining and prevents it from aging prematurely due to the high temperature environment during the mixing process. Furthermore, during the feeding stage, the intermittent expansion of the rubber air bladder impacts the elastic inner lining. Under this impact, the mixture slides towards the discharge valve due to its inertia, promoting feeding. Attached Figure Description

[0015] Figure 1 This is a front view of a device for uniformly mixing basalt waste stone powder and fly ash according to this utility model. Figure 2 This is a rear view of the hopper of this utility model; Figure 3 This is a front view of the two stirring shafts of this utility model; Figure 4 This is a cross-sectional view of the hopper of this utility model; Figure 5 This is a system block diagram of the controller of this utility model.

[0016] The attached diagram lists the components represented by each number as follows: 1. Material hopper; 2. Two agitator shafts; 3. Tilting paddle; 4. Feed hopper; 5. Discharge valve; 6. Inclined support bracket; 7. Coupling; 8. Servo motor; 9. Synchronous gearbox; 10. Oil inlet; 11. Cooling fan; 12. Bearing housing; 13. Sinking tank; 14. Elastic inner lining layer; 15. Rubber airbag; 16. Air supply pipe; 17. Air pump; 18. Pressure stabilizing tank; 19. Main air pipe; 20. Electric air valve. Detailed Implementation

[0017] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0018] like Figures 1-5As shown, a device for uniformly mixing basalt waste stone powder and fly ash includes an inclined silo 1. When processing basalt waste stone powder and fly ash, the raw materials are poured into the feed hopper 4 connected to the top of the silo 1. While adding materials, the mixture is stirred. In this embodiment, the stirring operation is carried out by two parallel stirring shafts 2 rotatably arranged inside the silo 1 and a turning paddle 3 installed on the outside of the two stirring shafts 2. The main function is to use a drive mechanism set outside the silo 1 to connect and drive the stirring shafts 2. Under the control of the controller, the two stirring shafts 2 and the auxiliary turning paddle 3 rotate in opposite directions and turn the raw materials, so that the two raw materials are gradually mixed evenly. After a certain period of time, the discharge valve 5 connected to the bottom of the silo 1 and separated from the settling tank 13 can be opened to collect the materials. Because of the silo 1, the evenly mixed product can easily flow to the discharge valve 5 and be collected through bags or containers.

[0019] See attached document Figure 2 , Figure 3 and Figure 5 The drive mechanism used in this embodiment includes a synchronous gearbox 9, a coupling 7, and a servo motor 8 connected axially to the stirring shaft 2 in sequence. The servo motor 8 can be a YEJ series three-phase asynchronous motor. The servo motor 8 is electrically connected to the controller, and the servo motor 8 can be started by operating the controller. Since the output end of the servo motor 8 is axially connected to the middle of the coupling 7, the power is transmitted to one of the stirring shafts 2 along the coupling 7. In addition, the synchronous gearbox 9 is connected to the two stirring shafts 2. Under the transmission action of the two meshing gears inside the synchronous gearbox 9, the two stirring shafts 2 can rotate in opposite directions at the same speed.

[0020] The servo motor 8 is suspended on the top beam by bolts. After the servo motor 8 is connected to the stirring shaft 2, the axial straightness needs to be checked to prevent the skew from causing severe shaking.

[0021] See attached document Figure 1 and Figure 2 To address the heat generated by friction during transmission, this embodiment provides an oil inlet 10 on the top of the synchronous gearbox 9. The oil inlet 10 can be opened periodically to replace the gear lubricating oil in the synchronous gearbox 9, thereby reducing gear clearance friction. A cooling fan 11 for cooling the synchronous gearbox 9 is also installed inside the inclined bracket 6. Since the controller is electrically connected to the cooling fan 11, the controller can be operated to directly start the cooling fan 11 to blow air onto the synchronous gearbox 9 for heat dissipation.

[0022] When the raw materials are mixed, most of the two raw materials contain moisture, and they tend to clump together and deposit at the bottom of the silo 1 after sticking together. In addition, the material turning paddle 3 generally does not stick to the wall, making it difficult for the clumped parts of the raw materials to come into contact with the material turning paddle 3 in the silo 1. Therefore, this embodiment makes improvements to address these clumped parts of the raw materials.

[0023] See attached document Figure 1 and Figure 4 To agitate the clumps of raw materials, this embodiment has three sinkholes 13 on the bottom wall of the silo 1. The number of sinkholes 13 can be increased or decreased according to actual needs. An elastic inner liner 14 and a rubber airbag 15 are vertically arranged inside the sinkholes 13. The rubber airbag 15 is connected to the air supply pipe 16 and the air supply mechanism. The air supply mechanism is activated by the controller to intermittently inflate the rubber airbag 15 along the air supply pipe 16. This intermittent expansion of the rubber airbag 15 allows it to lift the elastic inner liner 14 and briefly impact the nearby clumps of raw materials. The inertia causes the clumps of raw materials to be lifted into the air, making it easier for them to be added to the mixing process and promoting the agitation of the clumps. Then, the inflation is stopped, and the rubber airbag 15 deflates, shrinks, and resets, without obstructing the mixing of the raw materials.

[0024] Furthermore, the elastic inner liner 14 in this embodiment can be made of polyurethane rubber, which can withstand the friction of the raw materials in the hopper 1. The elastic inner liner 14 surface can retain a portion of the raw materials due to a certain degree of friction, so that the raw materials can be laid out in a gradient on the inclined bottom wall of the hopper 1, so as to have a larger mixing area.

[0025] See attached document Figure 1 An inclined support bracket 6 is installed on the outside of the hopper 1, spaced apart from the air supply pipe 16. The inclined support bracket 6 is used to support the hopper 1 to tilt off the ground. Bearing seats 12 are rotatably connected to the ends of the two stirring shafts 2 away from the drive mechanism. The bearing seats 12, together with the synchronous gear box 9, support the stirring shafts 2, so that the stirring shafts 2 can maintain a stable state when rotating and reduce vibration.

[0026] See attached document Figure 1 , Figure 4 and Figure 5 The air supply mechanism in this embodiment includes a main air pipe 19, a pressure stabilizing tank 18, and an air pump 17, which are sequentially connected to the air supply pipe 16. The controller is electrically connected to the air pump 17, which can be operated to start the air pump 17 to intermittently draw in outside air and deliver it into the pressure stabilizing tank 18. Since the controller is electrically connected to the electric valve of the pressure stabilizing tank 18, the electric valve is briefly opened, which can send compressed air along the main air pipe 19 and the air supply pipe 16 into the rubber air bag 15, thereby expanding the rubber air bag 15.

[0027] As an optional embodiment, both the pressure stabilizing tank 18 and the air pump 17 are located outside the silo 1, which facilitates the wiring of the pressure stabilizing tank 18 and the air pump 17, and provides a safe space for inspection personnel to carry out inspection operations.

[0028] See attached document Figure 2 and Figure 5The port of the gas supply pipe 16 away from the gas supply mechanism is connected to an electric gas valve 20. Since the controller is electrically connected to the electric gas valve 20, the electric gas valve 20 can be opened at a time by a preset program in the controller. When the rubber air bag 15 shrinks, the air in the pressure tank 18 flows through the main air pipe 19, the gas supply pipe 16, and the rubber air bag 15, and is then discharged from the electric gas valve 20. This airflow carries away the heat of the rubber air bag 15, lowers the temperature of the rubber air bag 15, and creates a temperature difference between the rubber air bag 15 and the elastic inner lining layer 14, which dissipates heat from the elastic inner lining layer 14 and prevents the elastic inner lining layer 14 from aging faster due to the high temperature environment during the raw material mixing process. In addition, there is a gap between the electric gas valve 20 and the inclined bracket 6, which is used for the wiring of the electric gas valve 20.

[0029] During the feeding stage, the intermittent expansion of the rubber airbag 15 impacts the elastic inner liner 14. Under this impact, the mixture slides down toward the discharge valve 5 due to its own inertia, promoting feeding.

[0030] In this embodiment, the electrical connection method can be implemented using an A / D converter, an RS485 interface, or other interfaces.

[0031] The working principle of this utility model is as follows: During operation, the raw materials are poured into the feed hopper 4 connected to the top of the silo 1, and the servo motor 8 is started by the controller. Since the output end of the servo motor 8 is axially connected to the middle of the coupling 7, the power is transmitted to one of the stirring shafts 2 along the coupling 7. In addition, under the transmission action of two meshing gears inside the synchronous gearbox 9, the two stirring shafts 2 can rotate in opposite directions at the same speed. The two stirring shafts 2 and the attached turning paddle 3 rotate in opposite directions and turn the raw materials, so that the two raw materials are gradually mixed evenly. After a certain period of time, the discharge valve 5 connected to the bottom of the silo 1 and separated from the sink trough 13 can be opened to collect the raw materials.

[0032] During the mixing process, to agitate the clumps of raw materials, three sinkholes 13 are created on the bottom wall of the silo 1 to conceal the elastic inner lining 14 and the rubber airbag 15. The rubber airbag 15 is connected to the air supply pipe 16 and the air supply mechanism. The air supply mechanism is activated by the controller to intermittently inflate the rubber airbag 15 along the air supply pipe 16. This intermittent expansion of the rubber airbag 15 allows it to lift the elastic inner lining 14 and briefly impact the nearby clumps of raw materials. The inertia causes the clumps of raw materials to levitate, allowing them to be incorporated into the mixing process and promoting agitation. Then, the inflation is stopped, causing the rubber airbag 15 to deflate, shrink, and return to its original position, thus preventing obstruction of the mixing of raw materials.

[0033] The above description is merely an optional embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional methods in the field.

Claims

1. A device for uniformly mixing basalt waste stone powder and fly ash, characterized in that, include: The hopper (1) is inclined, and two parallel stirring shafts (2) are rotatably arranged inside the hopper (1) and a material turning paddle (3) is installed on the outside of the two stirring shafts (2). A drive mechanism connected to the stirring shafts (2) is provided outside the hopper (1). The sinking trough (13) located on the bottom wall of the silo (1) has an elastic inner lining layer (14) and a rubber airbag (15) arranged vertically inside the sinking trough (13). An air supply pipe (16) is connected to the rubber airbag (15), and the air supply pipe (16) is connected to an air supply mechanism for intermittent inflation of the rubber airbag (15).

2. The device for uniformly mixing basalt waste stone powder and fly ash according to claim 1, characterized in that: The drive mechanism includes a synchronous gearbox (9), a coupling (7), and a servo motor (8) that are sequentially connected to the stirring shaft (2) along the axial direction. The synchronous gearbox (9) is connected to the two stirring shafts (2), and the output end of the servo motor (8) is axially connected to the middle of the coupling (7).

3. The device for uniformly mixing basalt waste stone powder and fly ash according to claim 1, characterized in that: The gas supply mechanism includes a main gas pipe (19), a pressure stabilizing tank (18), and a gas pump (17) that are sequentially connected to the gas transmission pipe (16). The pressure stabilizing tank (18) and the air pump (17) are both located outside the silo (1).

4. The device for uniformly mixing basalt waste stone powder and fly ash according to claim 1, characterized in that: The top of the silo (1) is connected to a feed hopper (4), and the bottom of the silo (1) is connected to a discharge valve (5) spaced apart from the sinking trough (13).

5. The device for uniformly mixing basalt waste stone powder and fly ash according to claim 2, characterized in that: The hopper (1) is equipped with a slanted support bracket (6) spaced apart from the gas pipe (16) on the outside, and the two stirring shafts (2) are rotatably connected to a bearing seat (12) at the ends away from the drive mechanism.

6. The device for uniformly mixing basalt waste stone powder and fly ash according to claim 5, characterized in that: The synchronous gearbox (9) has an oil inlet (10) on its top, and the inclined bracket (6) is equipped with a cooling fan (11) for cooling the synchronous gearbox (9).

7. The device for uniformly mixing basalt waste stone powder and fly ash according to claim 5, characterized in that: The port of the gas supply pipe (16) away from the gas supply mechanism is connected to an electric gas valve (20), and there is a gap between the electric gas valve (20) and the inclined bracket (6).

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