A magnetic impurity removal and feeding device for a grain mill

Abstract

This utility model relates to a magnetic impurity removal and feeding device for a grain mill, which effectively solves the problems of difficult cleaning of magnetic impurity removal devices and easy re-mixing of metal impurities. The technical solution includes a feeding pipe, inside which is installed a magnetic impurity removal component. The magnetic impurity removal component includes an inner cylinder and an outer cylinder, with the outer cylinder coaxially sleeved outside the inner cylinder. Several sets of magnetic units are axially evenly distributed on the outer wall of the inner cylinder. Each set of magnetic units includes several bar magnets evenly distributed around the circumference, and the number of bar magnets in each set of magnetic units increases from top to bottom. This utility model, through the setting of magnetic force difference and the flushing of grain particles, causes metal particles to gradually collect at the lower end face of the outer cylinder, which not only prevents metal impurities from being flushed back into the grain, but also makes it easier to clean them when they are collected in one place.

Description

Technical Field

[0001] This utility model relates to the field of grain processing equipment, specifically a magnetic impurity removal and discharge device for a grain mill. Background Technology

[0002] Before grains enter the mill, impurities are removed. This is typically done by using air sieving to remove light impurities like straw and dead leaves, using screens to remove stones and branches of varying sizes, and using magnets to remove metallic impurities. For example, utility model patent application number CN202120804475.1 discloses a grain mill that uses multiple radially distributed support rods on the outer wall of a disc, with magnets mounted on the rods. The rotation of the disc causes the magnets to rotate, adsorbing metallic impurities from the grain. However, this mechanism disperses the metallic impurities onto the support rods, making centralized cleaning difficult. Furthermore, during rotation, the metallic impurities adsorbed on the support rods are frequently impacted by the grain grains and re-infiltrated. Summary of the Invention

[0003] This utility model provides a magnetic impurity removal and discharge device for a grain mill, which aims to solve the problems of magnetic impurity removal devices being difficult to clean and metal impurities being easily mixed in again.

[0004] The technical solution includes a discharge pipe, which is equipped with a magnetic impurity removal component. The magnetic impurity removal component includes an inner cylinder and an outer cylinder. The outer cylinder is coaxially sleeved outside the inner cylinder. Several sets of magnetic units are axially evenly distributed on the outer wall of the inner cylinder. Each set of magnetic units includes several bar magnets evenly distributed around the circumference. The number of bar magnets in each set of magnetic units increases from top to bottom.

[0005] The inner cylinder has an installation groove, and the bar magnet is embedded in the installation groove.

[0006] The magnetic impurity removal assembly also includes a mandrel, with the inner cylinder fixed on the mandrel. The upper end of the mandrel passes through a discharge pipe and is connected to a drive motor. Several unblocking rods are provided on the outer wall of the outer cylinder.

[0007] The unblocking rod is made of magnetic metal material.

[0008] The outer end of the unblocking rod is higher than the inner end.

[0009] A circular magnet is installed at the lower end of the inner cylinder, and the circular magnet maximizes the magnetic force at the lower end of the outer cylinder.

[0010] The lower end of the outer cylinder is machined with rounded corners.

[0011] The discharge pipe is provided with a slag removal port located below the magnetic impurity removal component, and the slag removal port is sealed by a screw plug.

[0012] This invention uses a magnetic difference and the washing action of grain particles to gradually collect metal particles on the lower end face of the outer cylinder. This not only prevents metal impurities from being washed back into the grain, but also makes it easier to clean them by collecting them in one place. Attached Figure Description

[0013] Figure 1 This is the front view of the present invention.

[0014] Figure 2 This is the front sectional view of the present invention.

[0015] Figure 3 This is a schematic diagram of the assembly of the magnetic impurity removal component.

[0016] Figure 4 for Figure 3 A magnified view of position A in the middle. Detailed Implementation

[0017] Referring to the accompanying drawings, this utility model includes a discharge pipe 1, which contains a magnetic impurity removal component. The magnetic impurity removal component includes an inner cylinder 2 and an outer cylinder 3. The outer cylinder 3 is coaxially sleeved outside the inner cylinder 2. Several sets of magnetic units are evenly distributed axially on the outer wall of the inner cylinder 2. Each set of magnetic units includes several bar magnets 4 evenly distributed circumferentially. The number of bar magnets 4 in each set of magnetic units increases from top to bottom, so that the magnetic force of the magnetic impurity removal component is greater towards the bottom. When grain particles pass through the discharge pipe 1, the metal impurities therein will be adsorbed onto the outer cylinder 3. Under the action of the difference in magnetic force between the upper and lower parts, the metal impurities adsorbed on the outer wall of the outer cylinder 3 will gradually migrate downward and eventually collect at the lower end of the outer cylinder 3.

[0018] The inner cylinder 2 has an installation groove 5, and the bar magnet 4 is embedded in the installation groove 5.

[0019] The magnetic impurity removal assembly also includes a spindle 6, with the inner cylinder 2 fixed on the spindle 6. The upper end of the spindle 6 extends through the discharge pipe 1 and is connected to a drive motor 7. Several unblocking rods 8 are provided on the outer wall of the outer cylinder 3. The drive motor 7 drives the inner cylinder 2 and the outer cylinder 3 to rotate through the spindle 6. The unblocking rods 8 agitate the grain particles, which can prevent the discharge pipe 1 from becoming blocked.

[0020] The unblocking rod 8 is made of magnetic metal material. When the unblocking rod 8 is magnetized, it can expand the adsorption range of metal impurities.

[0021] The outer end of the unclogging rod 8 is higher than the inner end, and the impurities adsorbed on the unclogging rod 8 will slide to the inner end and transfer to the outer cylinder 3.

[0022] A circular magnet 9 is installed at the lower end of the inner cylinder 2. The circular magnet 9 maximizes the magnetic force at the lower end of the outer cylinder 3, so that metal impurities will eventually be attracted to the lower end of the outer cylinder 3 and will not be washed away by the falling grain particles.

[0023] The lower end of the outer cylinder 3 is machined with rounded corners, which allows metal impurities to be smoothly transferred from the side wall of the outer cylinder 3 to the lower end face of the outer cylinder 3.

[0024] The discharge pipe 1 is provided with a slag removal port 10 located below the magnetic impurity removal component. The slag removal port 10 is sealed by a screw plug 11. By unscrewing the screw plug 11, metal impurities on the outer cylinder 3 can be cleaned through the slag removal port 10.

[0025] In use, grain particles enter from the upper end of the discharge pipe 1 and are discharged from the lower end of the discharge pipe 1 into the grinding mill. When the grain particles pass through the magnetic impurity removal component inside the discharge pipe 1, the metal impurities in the grain particles are attracted by the magnetized outer cylinder 3 and the unblocking rod 8. The metal impurities attracted on the unblocking rod 8 gradually slide towards the inner end of the unblocking rod 8 under the action of the flushing of the grain particles and the magnetic difference between the inner and outer ends, and are then attracted to the outer wall of the outer cylinder 3. Continuing to be flushed by the grain particles and under the action of the magnetic difference between the upper and lower ends of the outer cylinder 3, they slide down the outer cylinder 3 to the lower end of the side wall of the outer cylinder 3, and are then attracted to the lower end face of the outer cylinder 3 by the circular magnet 9. The metal particles finally gather at the lower end face of the outer cylinder 3 and are no longer flushed by the grain particles, thus preventing them from being mixed into the grain particles again.

[0026] This invention uses the magnetic difference and the washing action of grain particles to gradually collect metal particles on the lower end face of the outer cylinder 3. This not only prevents metal impurities from being washed back into the grain, but also makes it easier to clean them by collecting them in one place.

Claims

1. A magnetic impurity removal and feeding device for a grain mill, comprising a feeding pipe (1), wherein the feeding pipe (1) is equipped with a magnetic impurity removal component, characterized in that, The magnetic impurity removal assembly includes an inner cylinder (2) and an outer cylinder (3). The outer cylinder (3) is coaxially sleeved outside the inner cylinder (2). Several sets of magnetic units are evenly distributed axially on the outer wall of the inner cylinder (2). Each set of magnetic units includes several bar magnets (4) evenly distributed around the circumference. The number of bar magnets (4) in each set of magnetic units increases from top to bottom.

2. The magnetic impurity removal and feeding device for a grain mill according to claim 1, characterized in that, The inner cylinder (2) is provided with an installation groove (5), and the bar magnet (4) is embedded in the installation groove (5).

3. The magnetic impurity removal and feeding device for a grain mill according to claim 1, characterized in that, The magnetic impurity removal assembly also includes a mandrel (6), the inner cylinder (2) is fixed on the mandrel (6), the upper end of the mandrel (6) passes through the discharge pipe (1) and is connected to a drive motor (7), and several unblocking rods (8) are provided on the outer wall of the outer cylinder (3).

4. The magnetic impurity removal and feeding device for a grain mill according to claim 3, characterized in that, The unblocking rod (8) is made of magnetic metal material.

5. A magnetic impurity removal and feeding device for a grain mill according to claim 4, characterized in that, The outer end of the unblocking rod (8) is higher than the inner end.

6. A magnetic impurity removal and feeding device for a grain mill according to claim 1, characterized in that, A circular magnet (9) is installed at the lower end of the inner cylinder (2), and the circular magnet (9) maximizes the magnetic force at the lower end of the outer cylinder (3).

7. A magnetic impurity removal and feeding device for a grain mill according to claim 6, characterized in that, The lower end of the outer cylinder (3) is machined with rounded corners.

8. A magnetic impurity removal and feeding device for a grain mill according to claim 1, characterized in that, The material discharge pipe (1) is provided with a slag removal port (10) located below the magnetic impurity removal component, and the slag removal port (10) is sealed by a screw plug (11).

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