Connecting structure of a storage tank and a jet mill

Abstract

The application relates to a connecting structure of a storage tank and an air flow pulverizer and relates to the related field of the air flow pulverizer. The connecting structure comprises a feeding barrel body, a feeding barrel feeding port, a feeding barrel discharging port, an air flow pulverizing box body, a raw material conveying pipeline, a mixing barrel body, a conveying pipeline, a mixing barrel discharging port, a recycling fine pipe and a dust removal equipment, and a stirring device is arranged in the feeding barrel body. In the connecting structure of the storage tank and the air flow pulverizer, raw materials enter the feeding barrel body provided with the stirring device through the feeding barrel feeding port, are uniformly mixed, are pulverized through the air flow pulverizing box body, are screened under the action of pulse airflow, enter the mixing barrel body for mixing, are discharged through the mixing barrel discharging port, floating dust is returned to the feeding barrel body through the recycling fine pipe for re-stirring and pulverizing, and the discharged dust is collected by the dust removal equipment.

Description

Technical Field

[0001] This application relates to the technical field of air jet mills, and in particular to a connection structure between a storage tank and an air jet mill. Background Technology

[0002] A related technology, CN216172983U, describes an airflow pulverizer for pretreatment of powder raw materials. The pulverizer includes a main body with a feeder at its top and a storage box at one end. A filter bag dust collector is installed inside the main body. This invention utilizes a storage box, spiral blades, a circular plate, and a feeding trough. Granular raw materials are poured into the storage box. A second motor drives the spiral blades to transport the raw materials from the storage box into the feed hopper. A third motor rotates the circular plate, causing the metering groove inside the circular plate to rotate below the feeding trough. The raw materials from the feed hopper then enter the metering groove. The circular plate continues to rotate, moving the metering groove below the feed hopper, causing the raw materials to fall into the feeder and into the main body of the airflow pulverizer. This effectively solves the problem of high labor intensity associated with manual feeding.

[0003] The existing storage tanks used in the aforementioned technologies generate a large amount of dust during storage and mixing. This dust not only pollutes the workshop environment and reduces the quality of the working environment, but also enters the crusher through airflow, leading to waste of raw materials. Utility Model Content

[0004] To address the issue of existing storage tanks generating significant amounts of dust during storage and mixing, which not only pollutes the workshop environment and reduces the quality of the working environment but also enters the pulverizer with the airflow, leading to material waste, this application provides a connection structure between the storage tank and the airflow pulverizer.

[0005] The connection structure between a storage tank and an air jet mill provided in this application adopts the following technical solution: it includes a feeding tank body, a feeding tank inlet located on one side of the upper end face of the feeding tank body, a feeding tank outlet located on the lower end face of the feeding tank body, an air jet milling box body connected to the feeding tank outlet, a raw material conveying pipe located between the air jet milling box body and the feeding tank outlet, a mixing tank body connected to the air jet milling box body, a conveying pipe located between the mixing tank body and the air jet milling box body, a mixing tank outlet located on the lower end face of the mixing tank body, a recovery pipe located between the mixing tank outlet and the feeding tank inlet, and a dust removal device located on the upper end face of the feeding tank body. A stirring device is provided inside the feeding tank body.

[0006] By adopting the above technical solution, the raw and auxiliary materials enter the feeding barrel with a stirring device through the feeding port of the feeding barrel. After being uniformly mixed, they are crushed by the airflow crushing box. The materials are screened under the action of pulse airflow and then enter the mixing barrel for mixing. At the same time, the materials are discharged through the discharge port of the mixing barrel. The generated floating dust is returned through the recovery fine tube for further stirring and crushing. The emitted dust is collected by the dust removal equipment.

[0007] As a preferred embodiment, a conveying bag is provided between the raw material conveying pipeline and the discharge port of the feed hopper, and the two ends of the conveying bag are respectively connected to the discharge port of the feed hopper and the raw material conveying pipeline through connecting clamps.

[0008] By adopting the above technical solution, a conveying bag is installed between the raw material conveying pipeline and the feed barrel outlet, and the two ends of the conveying bag are connected to the feed barrel outlet and the raw material conveying pipeline respectively by connecting clamps. This effectively prevents static electricity generated during the transmission of raw materials, thereby avoiding equipment failure or safety accidents that may be caused by static electricity.

[0009] As a preferred embodiment, the airflow pulverizing chamber includes a pulverizing chamber connected to the raw material conveying pipeline, a screening chamber disposed above the pulverizing chamber, a screen cylinder disposed in the screening chamber, a gas compressor fixedly disposed outside the pulverizing chamber, and a nozzle connected to the outlet end of the gas compressor, wherein the nozzle is uniformly disposed in the pulverizing chamber.

[0010] By adopting the above technical solution, the airflow pulverizer introduces raw materials into the pulverizing chamber through a raw material conveying pipeline. The working principle of the airflow pulverizer is to use high-pressure gas generated by a gas compressor to be evenly injected into the pulverizing chamber through nozzles, forming a high-speed airflow. Under the action of the high-speed airflow, the raw materials are subjected to violent collisions and shearing, thereby achieving the pulverizing effect. The pulverized material is then classified and filtered through a screen in the screening chamber. Small particles pass through the screen and enter the mixing tank through the conveying pipeline, while coarser materials are further pulverized by the nozzles until the required particle size is achieved. The entire process is carried out in a closed environment, avoiding material contamination and improving production efficiency and product quality.

[0011] As a preferred embodiment, the screen cylinder includes a first filter screen plate disposed at one end of the screening chamber relative to the crushing chamber and a second filter screen plate disposed on the upper surface of the first filter screen plate. The first filter screen plate and the second filter screen plate are respectively made of stainless steel wire, and the inner diameter of the screen hole of the first filter screen cylinder is larger than the inner diameter of the screen hole of the second filter screen plate.

[0012] By adopting the above technical solution, grading filtration is achieved through a screen cylinder within the screening chamber. Specifically, the screen cylinder includes a first filter screen plate located near the crushing chamber end of the screening chamber and a second filter screen plate located on the upper surface of the first filter screen plate, both made of stainless steel wire. The inner diameter of the screen holes on the first filter screen plate is larger than that on the second filter screen plate. This design allows the crushed material to be graded and filtered through the screen cylinder within the screening chamber. Smaller particles pass through the gap between the first and second filter screen plates and enter the mixing tank via the conveying pipe, while larger particles cannot pass through the second filter screen plate and are further pulverized by nozzles until the required particle size is achieved. Through this process, the material is effectively graded.

[0013] As a preferred embodiment, the device further includes crushing blades that are uniformly and fixedly disposed on the inner wall of the crushing chamber, wherein the cross-section of the crushing blades is triangular.

[0014] By adopting the above technical solution, and through uniform distribution and fixed arrangement, the crushing blades, under the action of high-pressure airflow, can effectively increase the shear force between the material and the high-pressure airflow, thereby improving the crushing effect. Its working principle is as follows: when the high-pressure airflow passes through the crushing chamber, it generates a shearing effect with the uniformly distributed triangular crushing blades. This not only improves the kinetic energy transfer efficiency of the airflow but also causes the material to frequently collide and tear under the dual action of the high-speed airflow and the blades, achieving a highly efficient crushing effect.

[0015] As a preferred embodiment, the system also includes one-way valves respectively installed at the outlet of the inlet tank and the outlet of the mixing tank, and the one-way valves are configured as solenoid one-way valves.

[0016] By adopting the above technical solution, one-way valves are installed at the outlets of the inlet tank and the mixing tank, ensuring unidirectional flow of materials and preventing material backflow.

[0017] In summary, this application includes the following beneficial technical effects: 1. The raw and auxiliary materials are evenly mixed by the stirring device in the feeding barrel and sent into the airflow pulverizer for pulverization. The pulverized material rises to the screening chamber for screening under the action of pulse airflow. The qualified material enters the mixing barrel through the conveying pipe for mixing and is then discharged through the discharge port of the mixing barrel. 2. By using the recovery tube installed on the feeding barrel and the connection between the discharge port of the mixing barrel and the inlet of the feeding barrel, the floating dust generated during discharge can be returned to the feeding barrel for continued mixing and crushing, thus avoiding material waste and environmental pollution. 3. In addition, the dust removal equipment on the feed hopper can effectively collect the dust flying during the mixing process, improving production efficiency and the safety of the working environment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the connection between the storage tank and the air jet mill in this application; Figure 2 This is the connection structure between the storage tank and the air jet mill in this application. Figure 1 Another structural diagram from another perspective; Figure 3 This is a schematic diagram of the raw material conveying pipeline in the connection structure between the storage tank and the air jet mill in this application; Figure 4 This is a schematic diagram of the internal structure of the airflow pulverizing chamber in the connection structure between the storage tank and the airflow pulverizer in this application; Figure 5 This is a schematic diagram of the sieve cylinder in the connection structure between the storage tank and the air jet mill of this application.

[0019] Explanation of reference numerals in the attached drawings: 1. Feeding barrel body; 11. Feeding barrel inlet; 12. Feeding barrel outlet; 2. Airflow pulverizing chamber body; 21. Pulverizing chamber; 211. Pulverizing blades; 22. Screening chamber; 221. Screen cylinder; 2211. First filter screen plate; 2212. Second filter screen plate; 3. Mixing barrel body; 31. Mixing barrel outlet; 4. Raw material conveying pipeline; 41. Conveying bag; 5. Conveying pipeline; 6. Recovering capillary tube; 7. Gas compressor; 71. Nozzle; 8. Dust removal equipment. Detailed Implementation

[0020] The present application will be further described in detail below with reference to the accompanying drawings.

[0021] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5This application discloses a connection structure between a storage tank and an airflow pulverizer. It includes a feeding tank body 1, a feeding inlet 11 located on one side of the upper end face of the feeding tank body 1, a feeding outlet 12 located on the lower end face of the feeding tank body 1, an airflow pulverizing chamber connected to the feeding outlet 12, and a raw material conveying pipe 4 located between the airflow pulverizing chamber 2 and the feeding outlet 12. A conveying bag 41 is provided between the raw material conveying pipe 4 and the feeding outlet 12. Both ends of the conveying bag 41 are connected to the feeding outlet 12 and the raw material conveying pipe 4 respectively via connecting clamps. By providing a conveying bag 41 between the raw material conveying pipe 4 and the feeding outlet 12, and connecting both ends of the conveying bag 41 to the feeding outlet 12 and the raw material conveying pipe 4 respectively via connecting clamps, static electricity generated during raw material transmission is effectively prevented, thereby avoiding equipment malfunctions or safety accidents that may be caused by static electricity. The specific working principle is that the raw material enters the conveying bag 41 from the discharge port 12 of the feed hopper, and then is transported to the raw material conveying pipeline 4 through the conveying bag 41. During the entire transmission process, friction and other effects will cause relative movement between materials. The conveying bag 41 reduces the generation of static electricity by increasing the friction path and insulation effect, thus ensuring the safety and stability of raw material transmission.

[0022] refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 The airflow pulverizer 2 includes a mixing tank 3 connected to the airflow pulverizer 2, and a conveying pipe 5 disposed between the mixing tank 3 and the airflow pulverizer 2. The airflow pulverizer 2 includes a pulverizing chamber 21 connected to the raw material conveying pipe 4, a screening chamber 22 disposed above the pulverizing chamber 21, a screen cylinder 221 disposed inside the screening chamber 22, a gas compressor 7 fixedly disposed outside the pulverizing chamber 21, and a nozzle 71 connected to the outlet end of the gas compressor 7. The nozzle 71 is evenly disposed inside the pulverizing chamber 21. The airflow pulverizer 2 introduces the raw material into the pulverizing chamber 21 through the raw material conveying pipe 4. The working principle of the airflow pulverizer 2 is to use the high-pressure gas generated by the gas compressor 7 to be evenly sprayed into the pulverizing chamber 21 through the nozzle 71 to form a high-speed airflow, so that the raw material is subjected to violent collision and shearing under the action of the high-speed airflow, thereby achieving the pulverizing effect. The pulverized material is graded and filtered through the screen cylinder 221 inside the screening chamber 22. Small particles pass through the screen cylinder 221 and enter the mixing tank 3 via the conveying pipe 5, while coarser particles are further pulverized by the nozzle 71 until the required particle size is achieved. The entire process is carried out in a closed environment, which avoids material contamination and improves production efficiency and product quality.

[0023] refer to Figure 1 , Figure 3 , Figure 4 and Figure 5The sieve cylinder 221 includes a first filter screen plate 2211 disposed at one end of the screening chamber 22 relative to the crushing chamber 21, and a second filter screen plate 2212 disposed on the upper surface of the first filter screen plate 2211. The first filter screen plate 2211 and the second filter screen plate 2212 are respectively made of stainless steel wire, and the inner diameter of the screen holes of the first filter screen cylinder 221 is larger than the inner diameter of the screen holes of the second filter screen plate 2212. Grading filtration is performed through the sieve cylinder 221 within the screening chamber 22. Specifically, the sieve cylinder 221 includes a first filter screen plate 2211 disposed at one end of the screening chamber 22 near the crushing chamber 21, and a second filter screen plate 2212 disposed on the upper surface of the first filter screen plate 2211, both made of stainless steel wire. The inner diameter of the screen holes of the first filter screen plate 2211 is larger than the inner diameter of the screen holes of the second filter screen plate 2212. This design allows the crushed material to be graded and filtered through the sieve cylinder 221 within the screening chamber 22. Smaller particles pass through the gap between the first filter screen 2211 and the second filter screen 2212 and enter the mixing tank 3 via the conveying pipe 5. Larger particles, however, cannot pass through the second filter screen 2212 and are further pulverized by the nozzle 71 until they reach the required particle size. Through this process, the material can be effectively classified.

[0024] refer to Figure 4 and Figure 5 To ensure the effective pulverization of materials by the pulverizing chamber 21, it also includes pulverizing blades 211 uniformly and fixedly arranged on the inner wall of the pulverizing chamber 21. The cross-section of the pulverizing blades 211 is triangular. Through uniform distribution and fixed arrangement, the pulverizing blades 211 can effectively increase the shear force between the material and the high-pressure airflow under the action of the high-pressure airflow, thereby improving the pulverization effect of the material. Its working principle is: when the high-pressure airflow passes through the pulverizing chamber 21, it generates a shearing action with the uniformly distributed triangular pulverizing blades 211, which not only improves the kinetic energy transfer efficiency of the airflow, but also causes the material to frequently collide and tear under the dual action of high-speed airflow and blades, achieving a highly efficient pulverization effect.

[0025] refer to Figure 1 , Figure 2 , Figure 3 and Figure 4The mixing drum 3 has a discharge port 31 located on its lower end face, a recovery pipe 6 located between the discharge port 31 and the feed inlet 11, and a dust collector 8 located on its upper end face. The feed drum 1 contains a stirring device. In this invention, the raw materials are uniformly mixed and fed into the airflow pulverizing chamber 2 for pulverization by the stirring device in the feed drum 1. The pulverized material rises to the screening chamber 22 under the action of pulsed airflow for screening. Qualified material enters the mixing drum 3 through the conveying pipe 5 for further mixing and is then discharged through the discharge port 31. Simultaneously, the recovery pipe 6 on the feed drum 1 and the connection between the discharge port 31 and the feed inlet 11 allow the floating dust generated during discharge to return to the feed drum 1 for continued stirring and pulverization, avoiding material waste and environmental pollution. Furthermore, the dust collector 8 on the feed drum 1 effectively collects the dust generated during the mixing process, improving production efficiency and the safety of the working environment. The entire process is as follows: raw materials and auxiliary materials enter the feeding barrel 1 with a stirring device through the feeding port 11 of the feeding barrel. After being mixed evenly, they are crushed through the airflow crushing box 2. The materials are screened under the action of pulse airflow and then enter the mixing barrel 3 for mixing. At the same time, the materials are discharged through the discharge port 31 of the mixing barrel. The generated floating dust is returned through the recovery fine tube 6 for further stirring and crushing. The emitted dust is collected by the dust removal equipment 8.

[0026] refer to Figure 1 and Figure 2 In addition, it also includes one-way valves respectively installed at the discharge port 12 of the feed tank and the outlet of the mixing tank. The one-way valves are set as solenoid one-way valves. One-way valves are set at the outlet of the feed tank and the outlet of the mixing tank respectively to ensure the one-way flow of materials and avoid material backflow.

[0027] The implementation principle of the connection structure between the storage tank and the air jet mill in this embodiment is as follows: During use, the raw material is introduced into the grinding chamber 21 through the raw material conveying pipe 4 by the stirring device of the feeding tank 1. The working principle of the air jet mill 2 is that the high-pressure gas generated by the gas compressor 7 is evenly sprayed into the grinding chamber 21 through the nozzle 71 to form a high-speed airflow. Under the action of the high-speed airflow, the raw material is subjected to violent collision and shearing, thereby achieving the grinding effect. The ground material is graded and filtered through the screen cylinder 221 in the screening chamber 22. The coarser material is sprayed and ground again by the nozzle 71 until the required particle size is reached. The small particles pass through the screen cylinder 221 and enter the mixing tank 3 through the conveying pipe 5, and are then discharged through the discharge port 31 of the mixing tank. At the same time, through the recovery thin pipe 6 set on the feeding tank 1 and the connection between the discharge port 31 of the mixing tank and the inlet 11 of the feeding tank, the floating dust generated during discharge can be returned to the feeding tank 1 for continued stirring and grinding, avoiding material waste and environmental pollution. In addition, the dust removal device 8 on the feed tank 1 can effectively collect the dust flying during the mixing process.

[0028] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A connection structure between a storage tank and an air jet mill, characterized in that: The device includes a feeding barrel (1), a feeding barrel inlet (11) located on one side of the upper end face of the feeding barrel (1), a feeding barrel outlet located on the lower end face of the feeding barrel (1), an airflow pulverizing chamber connected to the feeding barrel outlet, a raw material conveying pipe (4) located between the airflow pulverizing chamber (2) and the feeding barrel outlet, a mixing barrel (3) connected to the airflow pulverizing chamber (2), a conveying pipe (5) located between the mixing barrel (3) and the airflow pulverizing chamber (2), a mixing barrel outlet (31) located on the lower end face of the mixing barrel (3), a recovery pipe (6) located between the mixing barrel outlet (31) and the feeding barrel inlet (11), and a dust removal device (8) located on the upper end face of the feeding barrel (1). The feeding barrel (1) is equipped with a stirring device.

2. The connection structure between the storage tank and the air jet mill according to claim 1, characterized in that: A conveying bag (41) is provided between the raw material conveying pipe (4) and the feed barrel outlet (12). The two ends of the conveying bag (41) are connected to the feed barrel outlet (12) and the raw material conveying pipe (4) respectively through connecting clamps.

3. The connection structure between the storage tank and the air jet mill according to claim 2, characterized in that: The airflow pulverizing chamber (2) includes a pulverizing chamber (21) connected to the raw material conveying pipe (4), a screening chamber (22) disposed above the pulverizing chamber (21), a screen cylinder (221) disposed in the screening chamber (22), a gas compressor (7) fixedly disposed outside the pulverizing chamber (21), and a nozzle (71) connected to the outlet end of the gas compressor (7).

4. The connection structure between the storage tank and the air jet mill according to claim 3, characterized in that: The nozzles (71) are evenly arranged inside the crushing chamber (21).

5. The connection structure between the storage tank and the air jet mill according to claim 4, characterized in that: The sieve cylinder (221) includes a first filter sieve plate (2211) disposed at one end of the sieving chamber (22) relative to the crushing chamber (21) and a second filter sieve plate (2212) disposed on the upper surface of the first filter sieve plate (2211).

6. The connection structure between the storage tank and the air jet mill according to claim 5, characterized in that: The first filter screen plate (2211) and the second filter screen plate (2212) are respectively made of stainless steel, and the inner diameter of the screen hole of the first filter screen cylinder (221) is larger than the inner diameter of the screen hole of the second filter screen plate (2212).

7. The connection structure between a storage tank and an air jet mill according to claim 6, characterized in that: It also includes crushing blades (211) that are uniformly and fixedly disposed on the inner wall of the crushing chamber (21), and the cross-section of the crushing blades (211) is set as a triangle.

8. The connection structure between the storage tank and the air jet mill according to claim 7, characterized in that: It also includes one-way valves respectively installed at the discharge port (12) of the feed tank and the outlet of the mixing tank, and the one-way valves are configured as solenoid one-way valves.

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