An airflow pulverizer cavity material level accurate control device

Abstract

The utility model discloses an accurate control device of airflow pulverizer cavity material position relates to material position control device technical field, including ration tank and ration unit, ration tank: the top fixed feed pipe, the inside of feed pipe is inserted with the outlet of conical material bucket bottom end, the bottom surface of ration tank is linked together with the top of conical shell, the top fixed material shell in ration tank inside, ration unit: contain adjusting block, fixed shaft, backplate, electric telescopic handle and mounting bracket, and backplate hinged mounting is in the bottom surface of material shell, and the rear side end of backplate is installed fixed shaft, and the rear side of mounting bracket is fixed in ration tank inside, this accurate control device of airflow pulverizer cavity material position, through real -time weighing and intelligent feedback, ensure that material position is always in the best state, promote the efficiency of crushing and product consistency, set up the spiral feeding that prevents the blockage, and supplementary airflow device promotes material flow, prevents the loss of in -tank hanging material to reduce.

Description

Technical Field

[0001] This utility model relates to the technical field of material level control devices, specifically a precise material level control device for the cavity of an airflow pulverizer. Background Technology

[0002] Air jet mills are key equipment in modern industry for producing ultrafine powders. Their working principle involves using high-speed airflow to cause material particles to collide and rub against each other, thus achieving pulverization. The material level (i.e., the material accumulation height) within the mill chamber is one of the core parameters affecting pulverization efficiency and product quality. Too low a material level leads to wasted airflow energy, reduced particle collision probability, and decreased output; too high a material level may cause material sedimentation, blockage, or even overload and shutdown of the equipment, while also affecting the particle size and particle size distribution of the powder. A prior art patent application (201320329213.X) discloses a precise material level control device for an airflow pulverizer chamber. The main body of the airflow pulverizer is fixed to a frame. The pulverizer has an air distribution plate, which is connected to an external compressed air source via an air inlet pipe. The compressed air is distributed through the air distribution plate and supplied to the nozzles inside the pulverizer. A weighing module is installed at the connection between the main body and the frame. The feedback electrical signal from the weighing module controls the feeding amount of the feeding mechanism. Flexible bodies with airflow channels are fixedly connected to the upper and lower ends of the air distribution plate. Traditional material level control devices mostly use a separate bolt conveying structure to transport materials. Due to the lack of a detection structure for the amount of material added, excessive physical accumulation leads to a decrease in the crushing efficiency of the air jet mill, and the material is also prone to accumulate inside the device. Therefore, we propose a precise material level control device for the air jet mill cavity. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a precise material level control device for the chamber of an airflow pulverizer. Through real-time weighing and intelligent feedback, it ensures that the material level is always in the optimal state, improves pulverization efficiency and product consistency, and the spiral feeder prevents blockage. The auxiliary airflow device promotes material flow and prevents material from sticking in the chamber to reduce losses. It can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a precise control device for material level in the cavity of an airflow pulverizer, comprising a metering box and a metering unit; Metering box: A feed pipe is fixed on the top surface, and the inside of the feed pipe is connected to the discharge port at the bottom of the conical barrel. The bottom surface of the metering box is connected to the top surface of the conical shell, and a material shell is fixed on the top surface inside the metering box. Quantitative unit: includes an adjusting block, a fixed shaft, a tray, an electric telescopic rod, and a mounting frame. The tray is hinged to the bottom surface of the material shell. The fixed shaft is installed on the rear end of the tray. The mounting frame is fixed to the rear side inside the quantitative box. The electric telescopic rod is installed on the front side of the mounting frame. The top end of the electric telescopic rod is connected to the bottom surface of the adjusting block. The sliding groove on the surface of the adjusting block is slidably installed with the fixed shaft. The system also includes a weighing device and a controller. The weighing device is fixed to the top surface of the pallet, and the controller is installed on the front side of the metering box. The input end of the electric telescopic rod is electrically connected to the output end of the controller, the output end of the weighing device is electrically connected to the input end of the controller, and the input end of the controller is electrically connected to the output end of an external power source.

[0005] Materials are stored in a conical hopper, and a weighing device is installed to weigh the materials inside the hopper. An electric telescopic rod is activated to raise and lower the adjusting block, which works in conjunction with the fixed shaft to adjust the tilt angle of the pallet so that the metered material falls into the conical hopper and connects to the airflow pulverizer for precise metered feeding.

[0006] Furthermore, the quantitative unit also includes a motor frame, a motor, a shaft seat, a top frame, and a threaded conveying rod. The top frame is fixed to the top surface of the conical hopper. A shaft seat is provided in the middle of the top frame. The motor frame is installed on the top surface of the top frame. The motor is installed on the top surface of the motor frame. The output shaft of the motor is connected to the top end of the threaded conveying rod. The outer side of the threaded conveying rod is rotatably connected to the shaft hole in the middle of the shaft seat. The input end of the motor is electrically connected to the output end of the controller. Starting the motor drives the threaded conveying rod to rotate to convey the material at a uniform speed. The shaft seat can increase the stability of the rotation of the threaded conveying rod.

[0007] Furthermore, the metering unit also includes an air pump, an annular air pipe, a connecting rod, a booster nozzle, and a flow regulating valve. The connecting rod is uniformly fixed to the surface of the annular air pipe, and its outer end is connected to the inner wall of the metering chamber. There are two air pumps, fixed to the left and right sides of the metering chamber respectively. The air pump's outlet is connected to the annular air pipe's inlet. The flow regulating valve is fixedly connected to the bottom of the conical shell by bolts. Booster nozzles are uniformly installed on the bottom surface of the annular air pipe. The input ends of the air pump and the flow regulating valve are electrically connected to the output end of the controller. Activating the air pump sprays gas through the booster nozzles on the bottom surface of the annular air pipe onto the inner wall of the conical shell to provide a certain boosting and loosening effect on the falling material, preventing powder accumulation inside the conical shell. It also provides a slight purging effect on the inner wall of the conical shell, reducing fine powder adhesion to the wall surface. Combined with the flow regulating valve, it precisely controls the material flow rate, thereby ensuring the material level inside the airflow pulverizer chamber.

[0008] Furthermore, it also includes a baffle, a T-shaped block, and a breathable drying shell. There are two breathable drying shells, which are fixed on both sides of the top surface inside the metering box and connected to the top surface of the metering box. The bottom surface of the baffle is fixed with a T-shaped block, which is slidably installed with a T-shaped groove on the top surface of the metering box. The T-shaped block slides inside the T-shaped groove to cover the baffle inside the breathable drying shell. The dehumidification bag inside the breathable drying shell can prevent the material from getting damp and clumping.

[0009] Furthermore, it also includes support rods, alarm lights, and a display screen. There are two support rods, which are fixed to the rear side of the metering box on the left and right sides respectively. An alarm light is installed at the top of each of the two support rods. The display screen is fixed to the front side of the metering box. The input terminals of the alarm lights and the display screen are electrically connected to the output terminal of the controller. The display screen can display the material measurement data, and the alarm light flashes to remind personnel to check and adjust when a measurement problem occurs.

[0010] Furthermore, it also includes fixing bolts and fixing holes. The fixing bolts are threaded to the screw holes on the surface of the feed pipe, and the fixing holes are opened on the outside of the discharge port at the bottom of the conical material barrel. The fixing bolts are inserted into the fixing holes to install and fix the conical material barrel, which also facilitates subsequent disassembly and maintenance.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This airflow pulverizer chamber material level precision control device has the following advantages: 1. The conical hopper stores the material and the starting motor drives the threaded conveyor rod to rotate and convey the material at a uniform speed. The weighing device is set up to weigh the material inside the hopper. The electric telescopic rod is started to raise and lower the adjusting block, which works with the fixed shaft to adjust the tilt angle of the pallet to drop the metered material into the conical shell and connect to the airflow pulverizer for precise metered feeding.

[0012] 2. By starting the air pump, the gas is sprayed through the pressurized nozzle at the bottom of the annular air pipe onto the inner wall of the conical shell to provide a certain boost and loosening effect on the falling material, preventing powder from accumulating inside the conical shell. On the other hand, it can also produce a slight sweeping effect on the inner wall of the conical shell, reducing the adhesion of fine powder to the wall surface. In conjunction with the flow regulating valve, the flow rate of the material is precisely controlled, thereby ensuring the material level inside the airflow pulverizer cavity. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the quantitative unit structure of this utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of the quantitative box of this utility model; Figure 4 This utility model Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0014] In the diagram: 1. Metering box, 2. Metering unit, 21. Adjusting block, 22. Fixed shaft, 23. Support plate, 24. Electric telescopic rod, 25. Mounting bracket, 26. Motor frame, 27. Motor, 28. Shaft seat, 29. Top frame, 210. Threaded conveying rod, 211. Air pump, 212. Annular air pipe, 213. Connecting rod, 214. Boosting nozzle, 215. Flow regulating valve, 3. Feed pipe, 4. Conical hopper, 5. Conical shell, 6. Material shell, 7. Weighing device, 8. Baffle, 9. T-block, 10. Breathable drying shell, 11. Support rod, 12. Alarm light, 13. Display screen, 14. Fixing bolt, 15. Fixing hole, 16. Controller. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-4 This embodiment provides a technical solution: a precise control device for material level in the cavity of an airflow pulverizer, comprising a metering box 1 and a metering unit 2; Metering box 1: The top surface is fixed with a feed pipe 3, the inside of the feed pipe 3 is connected to the discharge port at the bottom of the conical barrel 4, the bottom surface of metering box 1 is connected to the top surface of the conical shell 5, and the top surface inside metering box 1 is fixed with a material shell 6. Quantitative unit 2 includes an adjusting block 21, a fixed shaft 22, a support plate 23, an electric telescopic rod 24, and a mounting frame 25. The support plate 23 is hinged to the bottom surface of the material shell 6. The fixed shaft 22 is installed on the rear end of the support plate 23. The mounting frame 25 is fixed to the rear side inside the quantitative box 1. The electric telescopic rod 24 is installed on the front side of the mounting frame 25. The top end of the electric telescopic rod 24 is connected to the bottom surface of the adjusting block 21. The sliding groove on the surface of the adjusting block 21 is slidably installed with the fixed shaft 22. Quantitative unit 2 also includes a motor frame 26, a motor 27, a shaft seat 28, a top frame 29, and a thread. The conveyor rod 210 and the top frame 29 are fixed to the top surface of the conical hopper 4. A shaft seat 28 is located in the middle of the top frame 29, and a motor frame 26 is mounted on the top surface of the top frame 29. A motor 27 is mounted on the top surface of the motor frame 26. The output shaft of the motor 27 is connected to the top end of the threaded conveyor rod 210. The outer side of the threaded conveyor rod 210 is rotatably connected to the shaft hole in the middle of the shaft seat 28. The input end of the motor 27 is electrically connected to the output end of the controller 16. Starting the motor 27 drives the threaded conveyor rod 210 to rotate, thus conveying the material at a uniform speed. The shaft seat 28 can accommodate additional threaded conveyor rods 210. To ensure rotational stability, the metering unit 2 also includes an air pump 211, an annular air pipe 212, a connecting rod 213, a booster nozzle 214, and a flow regulating valve 215. Connecting rods 213 are uniformly fixed to the surface of the annular air pipe 212, with the outer ends of the connecting rods 213 connected to the inner wall of the metering box 1. There are two air pumps 211, fixed to the left and right sides of the metering box 1 respectively. The outlet pipe of the air pump 211 is connected to the inlet of the annular air pipe 212. The flow regulating valve 215 is fixedly connected to the bottom end of the conical shell 5 by bolts. The bottom surface of the annular air pipe 212 is uniformly equipped with... The input end of the device equipped with a booster nozzle 214, an air pump 211, and a flow regulating valve 215 is electrically connected to the output end of the controller 16. When the air pump 211 is started, the air is sprayed through the booster nozzle 214 on the bottom surface of the annular air pipe 212 onto the inner wall of the conical shell 5 to provide a certain boost and loosening effect on the falling material, preventing powder from accumulating inside the conical shell 5. On the other hand, it can also produce a slight sweeping effect on the inner wall of the conical shell 5, reducing the adhesion of fine powder to the wall surface. In conjunction with the flow regulating valve 215, the flow rate of the material is precisely controlled, thereby ensuring the material level inside the airflow pulverizer cavity. The system includes a weighing device 7 and a controller 16. The weighing device 7 is fixed to the top surface of the pallet 23, and the controller 16 is installed on the front side of the metering box 1. The input end of the electric telescopic rod 24 is electrically connected to the output end of the controller 16, the output end of the weighing device 7 is electrically connected to the input end of the controller 16, and the input end of the controller 16 is electrically connected to the output end of an external power supply. The material is stored in the conical hopper 4, and the weighing device 7 is used to quantitatively weigh the material inside the hopper 6. Activating the electric telescopic rod 24 drives the adjusting block 21 to rise and fall, which, in conjunction with the fixed shaft 22, adjusts the pallet 23. The inclined angle is used to drop the metered material into the conical shell 5 and connect it to the airflow pulverizer for precise metering. It also includes a baffle 8, a T-block 9, and a permeable drying shell 10. There are two permeable drying shells 10, fixed on both sides of the top surface inside the metering box 1 and connected to the top surface of the metering box 1. A T-block 9 is fixed to the bottom surface of the baffle 8, and the T-block 9 is slidably installed in the T-slot on the top surface of the metering box 1. The T-block 9 slides inside the T-slot to cover the baffle 8 inside the permeable drying shell 10. The dehumidifier inside the permeable drying shell 10 prevents the material from getting damp and clumping. It also includes support rods 11, an alarm light 12, and a display screen 13. There are two support rods 11, one on each side. It should be fixed on the rear side of the metering box 1. Alarm lights 12 are installed on the top of the two support rods 11. The display screen 13 is fixed on the front side of the metering box 1. The input terminals of the alarm lights 12 and the display screen 13 are electrically connected to the output terminal of the controller 16. The display screen 13 can display the material measurement data, and the alarm lights 12 flash to remind personnel to check and adjust when a measurement problem occurs. It also includes fixing bolts 14 and fixing holes 15. The fixing bolts 14 are threaded to the screw holes on the surface of the feed pipe 3. The fixing holes 15 are opened on the outside of the discharge port at the bottom of the conical material barrel 4. The fixing bolts 14 are inserted into the inside of the fixing holes 15 to install and fix the conical material barrel 4, which also facilitates subsequent disassembly and maintenance.

[0017] The working principle of the precise material level control device for the airflow pulverizer cavity provided by this utility model is as follows: First, the conical hopper 4 is inserted into the feed pipe 3, and the fixing bolt 14 is inserted into the fixing hole 15 to install and fix the conical hopper 4. The material to be added is placed into the conical hopper 4. The motor 27 is started to drive the threaded conveyor rod 210 to rotate and convey the material into the material shell 6 at a uniform speed. The shaft seat 28 can increase the stability of the rotation of the threaded conveyor rod 210. The weighing device 7 is set to quantitatively weigh the material inside the material shell 6. The electric telescopic rod 24 is started to drive the adjusting block 21 to rise and fall in coordination with the fixed shaft 22 to adjust the pallet 23. The tilt angle is used to drop the metered material into the conical shell 5. At this time, the air pump 211 is started to spray gas through the pressurized nozzle 214 on the bottom of the annular air pipe 212 onto the inner wall of the conical shell 5 to provide a certain boost and loosening effect on the falling material, preventing powder from accumulating inside the conical shell 5. On the other hand, it can also produce a slight sweeping effect on the inner wall of the conical shell 5, reducing the adhesion of fine powder to the wall surface. In conjunction with the flow regulating valve 215, the flow rate of the material is precisely controlled, thereby ensuring the material level inside the air jet mill cavity. The outlet of the flow regulating valve 215 is connected to the inlet of the air jet mill, so that the material can be conveyed into the air jet mill cavity at a metered and uniform speed to ensure the stability of the material level inside the air jet mill cavity. The display screen 13 can display the material measurement data, and when a measurement problem occurs, the alarm light 12 flashes to remind personnel to check and adjust.

[0018] It is worth noting that the controller 16 disclosed in the above embodiments is provided with buttons on its surface corresponding to the electric telescopic rod 24, motor 27, air pump 211, flow regulating valve 215, weighing device 7, alarm light 12, and display screen 13. The controller 16 controls the operation of the electric telescopic rod 24, motor 27, air pump 211, flow regulating valve 215, weighing device 7, alarm light 12, and display screen 13 using methods commonly used in the prior art.

[0019] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A device for precise control of material level in the chamber of an airflow pulverizer, characterized in that: It includes a quantitative box (1) and a quantitative unit (2); Quantitative box (1): The top surface is fixed with a feed pipe (3), the inside of the feed pipe (3) is connected to the discharge port at the bottom of the conical barrel (4), the bottom surface of the quantitative box (1) is connected to the top surface of the conical shell (5), and the top surface inside the quantitative box (1) is fixed with a material shell (6). Quantitative unit (2): includes an adjusting block (21), a fixed shaft (22), a tray (23), an electric telescopic rod (24), and a mounting frame (25). The tray (23) is hinged to the bottom surface of the material shell (6). The fixed shaft (22) is installed on the rear end of the tray (23). The mounting frame (25) is fixed to the rear side inside the quantitative box (1). The electric telescopic rod (24) is installed on the front side of the mounting frame (25). The top end of the electric telescopic rod (24) is connected to the bottom surface of the adjusting block (21). The groove on the surface of the adjusting block (21) is slidably installed with the fixed shaft (22). The device also includes a weighing device (7) and a controller (16). The weighing device (7) is fixed on the top surface of the pallet (23). The controller (16) is installed on the front side of the metering box (1). The input end of the electric telescopic rod (24) is electrically connected to the output end of the controller (16). The output end of the weighing device (7) is electrically connected to the input end of the controller (16). The input end of the controller (16) is electrically connected to the output end of an external power supply.

2. The precise material level control device for the chamber of an airflow pulverizer according to claim 1, characterized in that: The quantitative unit (2) also includes a motor frame (26), a motor (27), a shaft seat (28), a top frame (29), and a threaded conveying rod (210). The top frame (29) is fixed on the top surface of the conical bucket (4). The shaft seat (28) is provided in the middle of the top frame (29). The motor frame (26) is installed on the top surface of the top frame (29). The motor (27) is installed on the top surface of the motor frame (26). The output shaft of the motor (27) is connected to the top end of the threaded conveying rod (210). The outer side of the threaded conveying rod (210) is rotatably connected to the shaft hole in the middle of the shaft seat (28). The input end of the motor (27) is electrically connected to the output end of the controller (16).

3. The precise material level control device for the chamber of an airflow pulverizer according to claim 2, characterized in that: The metering unit (2) also includes an air pump (211), an annular air pipe (212), a connecting rod (213), a booster nozzle (214), and a flow regulating valve (215). The connecting rod (213) is uniformly fixed on the surface of the annular air pipe (212). The outer end of the connecting rod (213) is connected to the inner wall of the metering box (1). There are two air pumps (211) and they are fixed on the left and right sides of the metering box (1). The outlet pipe of the air pump (211) is connected to the inlet of the annular air pipe (212). The flow regulating valve (215) is fixedly connected to the bottom end of the conical shell (5) by bolts. The booster nozzle (214) is uniformly installed on the bottom surface of the annular air pipe (212). The input ends of the air pump (211) and the flow regulating valve (215) are electrically connected to the output end of the controller (16).

4. The precise material level control device for the chamber of an airflow pulverizer according to claim 1, characterized in that: It also includes a baffle (8), a T-shaped block (9) and a breathable drying shell (10). There are two breathable drying shells (10) and they are fixed on both sides of the top surface inside the metering box (1) and connected to the top surface of the metering box (1). The bottom surface of the baffle (8) is fixed with a T-shaped block (9), and the T-shaped block (9) is slidably installed with the T-shaped groove on the top surface of the metering box (1).

5. The precise material level control device for the chamber of an airflow pulverizer according to claim 1, characterized in that: It also includes a support rod (11), an alarm light (12) and a display screen (13). There are two support rods (11) and they are fixed to the rear side of the metering box (1) on the left and right sides respectively. An alarm light (12) is installed on the top of each of the two support rods (11). The display screen (13) is fixed to the front side of the metering box (1). The input terminals of the alarm light (12) and the display screen (13) are electrically connected to the output terminal of the controller (16).

6. The precise material level control device for the chamber of an airflow pulverizer according to claim 1, characterized in that: It also includes a fixing bolt (14) and a fixing hole (15), wherein the fixing bolt (14) is threadedly connected to the screw hole on the surface of the feed pipe (3), and the fixing hole (15) is opened on the outside of the discharge port at the bottom of the conical material barrel (4).

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