An auxiliary device for airflow mill processing

Abstract

The utility model discloses an auxiliary device for airflow mill processing relates to airflow mill technical field, including the discharge cover, the lower end intercommunication connection of discharge cover has the discharge pipe, the inside intermediate position of discharge cover is equipped with the collecting cover, the outer edge of collecting cover place is equipped with the discharge along bending downwards, the inside intermediate position of discharge cover and at the top of collecting cover is equipped with the circulating pipe, the lower end intercommunication connection of collecting cover has the circulating gas pipe, the lower end of circulating gas pipe and at the inside of discharge pipe is equipped with the output of electric three -way valve one, and the other end output of electric three -way valve is equipped with the discharge pipe, and the input of electric three -way valve is equipped with the air inlet pipe through the lateral wall of discharge pipe, the outside end between discharge along and the inner wall of discharge cover is equipped with the discharge groove, and the material of sinking is blown up and circulates airflow grinding, shortens part material production cycle, reduces equipment operation cycle, prolongs equipment life.

Description

Technical Field

[0001] This utility model relates to the field of air jet milling technology, and specifically to an auxiliary device for air jet milling. Background Technology

[0002] An air jet mill is an advanced piece of equipment that uses high-speed airflow to achieve ultrafine grinding of materials. Its core principle is to create a supersonic airflow within the grinding chamber using compressed air or inert gas. This causes material particles to be pulverized to the micron or even nanometer scale through high-speed collision, shearing, and friction. A typical structure includes nozzles, classifying wheels, and a collection system. By adjusting the airflow pressure and the speed of the classifying wheels, the particle size distribution of the finished product can be precisely controlled. During operation, the high-speed, high-pressure airflow crushes and grinds the raw materials within the mill's inner chamber. Some incompletely crushed materials remain as large particles and settle at the bottom of the mill's inner chamber under gravity. Traditional methods involve circulating and grinding these large particles through a discharge device, resulting in long production cycles for some materials, extended equipment operating cycles, and reduced equipment lifespan. Utility Model Content

[0003] The purpose of this utility model is to provide an auxiliary device for air jet milling, in order to solve the problem mentioned in the background art that the traditional processing method involves cyclically crushing and grinding large particles of material through a discharge device, which results in a long production cycle for some materials, a long equipment operating cycle, and affects the service life of the equipment.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an auxiliary device for air jet milling, comprising a discharge hood, a discharge pipe connected to the lower end of the discharge hood, a collection hood located in the middle of the interior of the discharge hood, a discharge edge bent downwards at the outer edge of the collection hood, a circulation pipe located in the middle of the interior of the discharge hood and above the collection hood, a circulation air pipe connected to the lower end of the collection hood, an output end of an electric three-way valve located at the lower end of the circulation air pipe and inside the discharge pipe, a discharge pipe located at the other output end of the electric three-way valve, an air inlet pipe located at the input end of the electric three-way valve penetrating the side wall of the discharge pipe, and a discharge groove located between the outer end of the discharge edge and the inner wall of the discharge hood.

[0005] Preferably, the lower end of the discharge hood is provided with a variable diameter section, the variable diameter section has a funnel-shaped structure, the collection hood has a funnel-shaped structure with the same slope as the variable diameter section, the discharge hood is connected to the input end of the variable diameter section, and the discharge pipe is connected to the output end of the variable diameter section.

[0006] Preferably, the collecting hood and the discharge edge are arranged at a right angle, and a mounting bracket is provided between the interior of the discharge hood and the circulation pipe. The position where the collecting hood and the discharge edge intersect is fixedly connected to the mounting bracket.

[0007] Preferably, the electric actuator of the electric three-way valve is disposed outside the discharge pipe through the side wall of the discharge pipe.

[0008] Preferably, a connecting flange is provided at the upper outer edge of the discharge hood.

[0009] Compared with the prior art, the beneficial effects of this utility model are: replacing the traditional processing method of circulating crushing and grinding large particles of material through the discharge device, an auxiliary device is set at the lower end of the air jet mill, which uses the same high-pressure air source as the air jet mill. The high-pressure air source is introduced into the interior of the auxiliary device, and through the high-pressure air source and the internal structure of the auxiliary device, the material settled at the bottom of the inner cavity of the air jet mill is blown up and circulated for grinding, which shortens the production cycle of some materials, reduces the equipment operation cycle, and extends the service life of the equipment. Attached Figure Description

[0010] Figure 1 This is an isometric view of the main structure of this utility model; Figure 2 This is an isometric sectional view of the main structure of this utility model; Figure 3 This is a front view schematic diagram of the main structure of this utility model; Figure 4 This is a front sectional view of the main structure of this utility model; Figure 5 This is a top view of the main structure of this utility model.

[0011] In the diagram: 1-Discharge hood, 2-Discharge pipe, 3-Collection hood, 4-Discharge edge, 5-Circulation pipe, 6-Circulation air pipe, 7-Electric three-way valve, 8-Discharge pipe, 9-Inlet pipe, 10-Discharge trough, 11-Reducing diameter section, 12-Mounting bracket, 13-Connecting flange. Detailed Implementation

[0012] 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.

[0013] Please see Figure 1-5This utility model provides an auxiliary device for air jet milling, including a discharge hood 1, a discharge pipe 2 connected to the lower end of the discharge hood 1, a collection hood 3 located in the middle of the interior of the discharge hood 1, a discharge edge 4 bent downward at the outer edge of the collection hood 3, a circulation pipe 5 located in the middle of the interior of the discharge hood 1 and above the collection hood 3, a circulation air pipe 6 connected to the lower end of the collection hood 3, an output end of an electric three-way valve 7 located at the lower end of the circulation air pipe 6 and inside the discharge pipe 2, a discharge pipe 8 located at the other output end of the electric three-way valve 7, an air inlet pipe 9 located at the input end of the electric three-way valve 7 penetrating the side wall of the discharge pipe 2, and a discharge groove 10 located between the outer end of the discharge edge 4 and the inner wall of the discharge hood 1.

[0014] In use, the entire auxiliary device is connected to the lower end of the air jet mill via the discharge hood 1, replacing the original discharge structure of the air jet mill. It uses the same high-pressure air source as the air jet mill, connecting the high-pressure air source to the inlet pipe 9. The high-pressure air is controlled by the electric three-way valve 7 to be input into the discharge hood 1 through the circulating air pipe 6. The high-pressure air is then ejected upwards through the circulating air pipe 6 and input into the circulating pipe 5. A space is left between the circulating pipe 5 and the circulating air pipe 6, and the diameter of the circulating pipe 5 is larger than that of the circulating air pipe 6. Large particles of material settle out and are collected by the collection hood 3, and are attracted towards the center of the collection hood 3 by the airflow. The material is moved and, under the action of high-pressure airflow, is output upward through the circulation pipe 5, allowing the settled large particles to participate in the grinding operation of the air jet mill again. A small portion of the settled, larger particles slide down from the discharge trough 10 along the discharge edge 4 and are output externally through the discharge pipe 2. They are then input back into the air jet mill through an externally installed material circulation device to participate in the grinding operation. When the air jet mill is shut down, the circulation pipe 6 and the discharge pipe 8 are connected by an electric three-way valve 7. Large particles without gas action are collected by the collection hood 3 and output externally through the circulation pipe 6 and the discharge pipe 8 to avoid blockage inside the equipment.

[0015] The lower end of the discharge hood 1 is provided with a variable diameter section 11, which has a funnel-shaped structure. The collection hood 3 has a funnel-shaped structure with the same slope as the variable diameter section 11, which ensures the consistency of the internal structure of the equipment, ensures the smooth flow of materials, and improves the stability of the airflow. The discharge hood 1 is connected to the input end of the variable diameter section 11, and the discharge pipe 2 is connected to the output end of the variable diameter section 11.

[0016] The collecting cover 3 and the discharge edge 4 are arranged at a right angle. An installation bracket 12 is provided between the inside of the discharge cover 1 and the circulation pipe 5. The position where the collecting cover 3 and the discharge edge 4 intersect is fixedly connected to the installation bracket 12. The circulation pipe 5, the collecting cover 3 and the discharge edge 4 are fixedly installed inside the discharge cover 1 by the installation bracket 12.

[0017] The electric actuator of the electric three-way valve 7 is installed outside the discharge pipe 2 through the side wall of the discharge pipe 2, so as to avoid the influence of dust and materials inside the discharge pipe 2 on the electric actuator of the electric three-way valve 7.

[0018] A connecting flange 13 is provided at the upper outer edge of the discharge hood 1, and the discharge hood 1 is connected to the lower end of the air jet mill through the connecting flange 13.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An auxiliary device for air jet milling, characterized in that: The device includes a discharge hood (1), the lower end of which is connected to a discharge pipe (2), a collection hood (3) is provided in the middle of the interior of the discharge hood (1), a discharge edge (4) is provided at the outer edge of the collection hood (3) bent downwards, a circulation pipe (5) is provided in the middle of the interior of the discharge hood (1) and above the collection hood (3), a circulation air pipe (6) is connected to the lower end of the collection hood (3), an output end of an electric three-way valve (7) is provided at the lower end of the circulation air pipe (6) and inside the discharge pipe (2), a discharge pipe (8) is provided at the other output end of the electric three-way valve (7), an air inlet pipe (9) is provided through the side wall of the discharge pipe (2) at the input end of the electric three-way valve (7), and a discharge groove (10) is provided between the outer end of the discharge edge (4) and the inner wall of the discharge hood (1).

2. The auxiliary device for air jet milling according to claim 1, characterized in that: The lower end of the discharge hood (1) is provided with a variable diameter section (11), which has a funnel-shaped structure. The collection hood (3) has a funnel-shaped structure with the same slope as the variable diameter section (11). The discharge hood (1) is connected to the input end of the variable diameter section (11), and the discharge pipe (2) is connected to the output end of the variable diameter section (11).

3. The auxiliary device for air jet milling according to claim 1, characterized in that: The collecting cover (3) is set at a right angle to the discharge edge (4). The inside of the discharge cover (1) is provided with a mounting bracket (12) between it and the circulation pipe (5). The position where the collecting cover (3) and the discharge edge (4) meet is fixedly connected to the mounting bracket (12).

4. The auxiliary device for air jet milling according to claim 1, characterized in that: The electric actuator of the electric three-way valve (7) passes through the side wall of the discharge pipe (2) and is disposed outside the discharge pipe (2).

5. An auxiliary device for air jet milling according to claim 1, characterized in that: The discharge hood (1) is provided with a connecting flange (13) at the upper outer edge.

Images