CN106422914B - Centrifugal powder particle mixing device - Google Patents

Abstract

The utility model provides a centrifugal powder mixing arrangement, be provided with the motor at the base middle part, be provided with on the power output shaft of motor and mix the powder groove, mix the powder inslot from bottom to top and set gradually down the screen cloth, go up the screen cloth, keep off a section of thick bamboo, the center processing of lower screen cloth and last screen cloth and fender section of thick bamboo has the hole that the aperture is the same, it has the slit to keep off a section of thick bamboo and mix between 4 walls in powder groove, mix and be provided with mixed powder capping on the powder groove, mix powder capping surface center and be provided with and mix powder capping minor axis as an organic whole even, be provided with the bracing piece on the base, be provided with the location disc on the bracing piece, the middle part of location disc is provided with minor axis assorted recess. The invention has the advantages of simple operation, low cost, small damage to powder crystals, high mixing efficiency and wide popularization and application in the field of chemical production.

Description

Centrifugal powder mixing device

technical field

The present invention is designed to a separation mixing device, in particular to a powder mixing device with a rotating device in a fixed container.

Background technique

The mixing of powder particles is often encountered in chemical experiments and chemical production processes. The ultimate purpose of mixing is to ensure that the properties of the mixture do not change and the substances cannot react on the basis of uniform mixing. Therefore, the mixing process should try to avoid the powder particles. high-strength rolling. For example, when mixing organic crystals in the laboratory, if there is rolling during the mixing process, it is likely to cause changes in the structure of the crystals. In addition, it is difficult to mix materials with large differences in density evenly at one time, and the existing device needs to be disassembled and recharged for multiple mixing, which is a cumbersome process.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to overcome the shortcomings of the existing powder mixing device, and provide a centrifugal powder mixing device with reasonable design, uniform mixing, simple operation and little abrasion to the powder.

The technical solution adopted to solve the above technical problems is as follows: a motor is arranged in the middle of the base, a powder mixing tank is arranged on the power output shaft of the motor, and a lower screen, an upper screen and a blocking cylinder are arranged in the powder mixing tank from bottom to top. , the center of the lower screen, the upper screen and the blocking cylinder are machined with holes with the same diameter, there is a slit between the blocking cylinder and the wall of the mixing tank, the mixing tank is provided with a mixing tank cover, and the outer surface of the mixing tank cover is The center is provided with a short shaft connected with the powder mixing tank cover, the base is provided with a support rod, the support rod is provided with a positioning disc, and the middle of the positioning disc is provided with a groove matching the short shaft.

The structure of the powder mixing tank of the present invention is that the inverted conical cylinder and the outer convex spherical bottom are connected as a whole, the included angle between the generatrix and the axis of the inverted conical cylinder of the powder mixing tank is 25° to 45°, and the inverted conical cylinder of the powder mixing tank is integrated. The ratio of large caliber to small caliber is 1.5 to 3.

The blocking cylinder of the present invention is in the shape of a conical cylinder, and a small blocking ring is arranged outside the small port of the blocking cylinder. The center line of the small blocking ring coincides with the center line of the blocking cylinder. On the upper screen, fixed slats evenly distributed along the circumferential direction are arranged on the outside of the large port of the blocking cylinder, and the blocking cylinder is fixed on the inner wall of the powder mixing tank through the fixed slats.

The upper screen mesh of the present invention is an annular plane mesh.

The lower screen of the present invention is a conical cylindrical screen, the large port of the lower screen is set at the bottom of the powder mixing tank on top of the lower small port, and the diameter of the large port of the lower screen is the same as the diameter of the small port of the inverted conical cylinder of the powder mixing tank. , the height of the lower screen is equal to the height of the upper screen from the bottom surface of the mixing tank, and the diameter of the small port of the lower screen is the same as the diameter of the small port of the baffle and the central hole of the upper screen.

The angle between the generatrix of the blocking cylinder and the axis of the invention is 35°˜55°, and the ratio of the diameter of the large end face of the blocking cylinder to the diameter of the small end face is 1.5˜3.

The included angle between the bus bar of the lower screen mesh and the axis of the present invention is 45°-65°.

The mesh diameter of the lower screen and the upper screen of the present invention is 2-5 mm.

The beneficial effects of the present invention are as follows:

The power output shaft of the motor of the present invention is connected with a powder mixing tank through a coupling, a lower screen and an upper screen are arranged in the powder mixing tank from bottom to top, the motor drives the powder mixing tank to rotate, and different powders in the powder mixing tank are Under the action of centrifugal force, it passes through the lower screen and the upper screen in turn. The lower screen is used to pulverize powder agglomerates, and the upper screen is used for secondary powder agglomeration. At the same time, the gravitational resistance is also large. The two cancel each other out, and the powder particles of different densities can move at the same speed; after the powder is transferred to the top of the mixing tank, stop the motor rotation, and the powder particles will return to the mixing under the action of gravity. At the bottom of the powder tank, repeated operations of starting and stopping the motor can facilitate the multiple mixing of powder; powder migration is driven by centrifugal force, avoiding high-strength impact and rolling, and the invention has simple operation, low cost, and little damage to powder crystals , high mixing efficiency, can be widely used in the field of chemical production.

Description of drawings

Figure 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic structural diagram of the blocking cylinder 5 in FIG. 1 .

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2 .

Detailed ways

The present invention will be further described in detail below with reference to the accompanying drawings and examples, but the present invention is not limited to the following embodiments.

In Figures 1, 2 and 3, the centrifugal powder mixing device of this embodiment consists of a base 10, a motor 9, a powder mixing tank 4, a lower screen 7, an upper screen 6, a blocking cylinder 5, and a powder mixing tank cover 3 , the short axis 2, the support rod 8, and the positioning disc 1 are connected to form.

A motor 9 is installed in the middle of the base 10. The motor 9 is a speed regulating motor 9. The power output shaft of the motor 9 is connected with a powder mixing tank 4 through a coupling. As a whole, the included angle between the busbar of the powder mixing tank and the axis is 35°, the ratio of the large diameter to the small diameter of the inverted conical cylinder of the powder mixing tank 4 is 2, and the powder mixing tank 4 is sequentially provided with a lower screen 7 from bottom to top , the center line of the upper screen 6, the blocking cylinder 5, the lower screen 7, the upper screen 6 and the blocking cylinder 5 coincide with the center line of the powder mixing tank 4, the lower screen 7 is a conical cylindrical net, and the lower screen 7. The included angle between the busbar and the axis is 55°. The large port of the lower screen 7 is placed at the bottom of the powder mixing tank 4. The large port of the lower screen 7 is placed at the bottom of the powder mixing tank 4. The diameter of the large port of the lower screen 7 is the diameter of the small port of the inverted cone of the powder mixing tank. The same, the height of the lower screen 7 is equal to the height of the upper screen 6 from the bottom surface of the powder mixing tank 4, the lower screen 7 is used for crushing powder agglomeration, the upper screen 6 is an annular plane screen, and the upper screen is used for secondary crushing The powder is agglomerated to make the different powders fully mixed. The diameter of the central hole of the upper screen 6 is equal to the diameter of the small port of the lower screen 7. The mesh diameter of the lower screen 7 and the upper screen 6 is 3mm, and the blocking cylinder 5 is in the shape of a cone. Cylinder-shaped, the angle between the bus bar of the blocking cylinder 5 and the axis is 45°, the ratio of the diameter of the large end face of the blocking cylinder 5 to the diameter of the small end face is 2, the diameter of the small port of the blocking cylinder 5 is equal to the diameter of the small port of the lower screen 7 , a small blocking ring 5-3 is arranged on the outside of the small port of the blocking cylinder 5, the center line of the small blocking ring 5-3 coincides with the center line of the blocking cylinder 5, and the small port of the blocking cylinder 5 is placed in the mixing tank upwards from the lower large port 4, the small baffle ring 5-3 abuts on the upper screen 6, the outer side of the large port of the baffle cylinder 5 is provided with fixed slats 5-2 evenly distributed along the circumferential direction, and the baffle cylinder 5 is fixed on the On the inner wall of the powder mixing tank, a slit is left between the edge of the 5 large ports of the blocking cylinder and the inner wall of the powder mixing tank. The powder mixing tank 4 is connected with the powder mixing tank cover 3 through threads. The powder trough cover 3 is connected with a short shaft 2 , the end of the short shaft 2 extends into the groove of the positioning disc 1 , and the positioning disc 1 is fixed on the base 10 by the support rod 8 .

When in use, open the powder mixing tank cover 3, pour in the powder to be mixed, screw the powder mixing tank cover 3 on the powder mixing tank, close the powder mixing tank, start the motor 9, and the motor 9 rotates to drive the powder mixing tank to rotate, and the powder Under the action of centrifugal force, it will be transferred to the top of the mixing tank through the lower screen, the upper screen and the slit of the blocking cylinder in turn, stop the rotation of the motor 9, and the powder will return to the mixing tank through the port of the guide cylinder under the action of gravity. At the bottom of the powder tank, repeated operations can achieve uniform powder mixing for many times.

Example 2

In this embodiment, the structure of the powder mixing tank 4 is that the inverted conical cylinder and the outer convex spherical bottom are connected as a whole, the included angle between the generatrix and the axis of the inverted conical cylinder of the powder mixing tank 4 is 25°, The ratio of the large diameter to the small diameter of the conical cylinder is 1.5. The powder mixing tank 4 is provided with a lower screen 7, an upper screen 6 and a blocking cylinder 5 in order from bottom to top. The angle between the bus bar of the lower screen 7 and the axis is 45°. , the angle between the bus bar and the axis of the blocking cylinder 5 is 35°, the diameter ratio of the large end face of the blocking cylinder 5 to the diameter of the small end face is 1.5, and the mesh diameter of the lower screen 7 and the upper screen 6 is 2mm .

The other parts and the connection relationship of the parts are the same as those in the first embodiment.

Example 3

In this embodiment, the structure of the powder mixing tank 4 is that the inverted conical cylinder and the outer convex spherical bottom are connected as a whole, the included angle between the generatrix and the axis of the inverted conical cylinder of the powder mixing tank 4 is 45°, The ratio of the large diameter to the small diameter of the conical cylinder is 3. The powder mixing tank 4 is provided with a lower screen 7, an upper screen 6 and a blocking cylinder 5 in order from bottom to top. The angle between the bus bar of the lower screen 7 and the axis is 65°. , the angle between the bus bar and the axis of the blocking cylinder 5 is 55°, the diameter ratio of the diameter of the large end face of the blocking cylinder 5 to the diameter of the small end face is 3, and the mesh diameter of the lower screen 7 and the upper screen 6 is 5mm. . The other parts and the connection relationship of the parts are the same as those in the first embodiment.

Claims (8)

1. A centrifugal powder and particle mixing device, characterized in that: a motor (9) is provided in the middle of the base (10), a powder mixing tank (4) is provided on the power output shaft of the motor (9), and the powder mixing tank ( 4) The lower screen (7), the upper screen (6), the blocking cylinder (5), the lower screen (7), the upper screen (6) and the center of the blocking cylinder (5) are arranged in order from bottom to top. Holes with the same diameter are machined, there is a slit between the blocking cylinder (5) and the wall of the powder mixing tank (4), and the powder mixing tank (4) is provided with a powder mixing tank cover (3) and a powder mixing tank cover (3). The center of the outer surface is provided with a short shaft (2) connected with the powder mixing tank cover (3) as a whole, a support rod (8) is provided on the base (10), and a positioning disc (1) is provided on the support rod (8), The middle of the positioning disc (1) is provided with a groove matching with the short axis (2); the device is used for crystal powder mixing. 2. The centrifugal powder and particle mixing device according to claim 1, characterized in that: the structure of the powder mixing tank (4) is that the inverted conical cylinder and the convex spherical bottom are connected as a whole, and the powder mixing tank (4) ) The included angle between the busbar and the axis of the inverted cone is 25°～45°, and the ratio of the large diameter to the small diameter of the inverted cone (4) is 1.5 to 3. 3. The centrifugal powder mixing device according to claim 1, characterized in that: the blocking cylinder (5) is in the shape of a conical cylinder, and a small blocking ring (5) is provided outside the small port of the blocking cylinder (5). -3), the center line of the small retaining ring (5-3) coincides with the center line of the retaining cylinder (5), the retaining cylinder (5) is inverted in the mixing tank (4), and the small retaining ring (5-3) is against the On the upper screen (6), fixed slats (5-2) evenly distributed in the circumferential direction are arranged on the outside of the large port of the blocking cylinder (5), and the blocking cylinder (5) is fixed on the on the inner wall of the mixing tank (4). 4 . The centrifugal powder and particle mixing device according to claim 1 , wherein the upper screen ( 6 ) is an annular flat screen. 5 . 5. The centrifugal powder mixing device according to claim 2 or 3, characterized in that: the lower screen (7) is a conical cylindrical screen, and the large port of the lower screen (7) is at the lower end of the small port. The upper part is arranged at the inner bottom of the powder mixing tank (4), the diameter of the large port of the lower screen (7) is the same as the diameter of the small port of the inverted conical cylinder of the powder mixing tank (4), and the height of the lower screen (7) is equal to the upper screen (6) The height from the bottom surface of the mixing tank, the diameter of the small port of the lower screen (7) is the same as the diameter of the small port of the blocking cylinder (5) and the central hole of the upper screen (6). 6 . The centrifugal powder mixing device according to claim 3 , wherein the angle between the busbar and the axis of the blocking cylinder ( 5 ) is 35° to 55°, and the diameter of the large end face of the blocking cylinder ( 5 ) is 35° to 55° 6 . The diameter ratio of the small end face is 1.5 to 3. 7 . The centrifugal powder mixing device according to claim 4 , wherein the angle between the bus bar of the lower screen ( 7 ) and the axis is 45° to 65°. 8 . 8 . The centrifugal powder mixing device according to claim 1 , wherein the mesh diameter of the lower screen ( 7 ) and the upper screen ( 6 ) is 2-5 mm. 9 .

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