CN109012904B - Ball-milling mixing device - Google Patents

Abstract

The invention discloses a ball mill mixing device which comprises a device seat, a roller, a plurality of grinding balls, a cleaning mechanism and a stirring mechanism. The cylinder is the slope form, cuts apart a plurality of mill storehouses in proper order through a plurality of filter screens along the direction of cylinder downward sloping in the cylinder, and the mesh diameter of every filter screen reduces in proper order along the direction of cylinder downward sloping. The grinding balls are divided into a plurality of groups of grinding ball groups, and each group of grinding ball groups is correspondingly distributed in each grinding bin. The cleaning mechanism comprises an inner shaft, a plurality of first extension rods and a plurality of brushes. The stirring mechanism comprises a plurality of stirring rods and stirring blades. According to the invention, the grinding bins and the groups of grinding balls are arranged, the roller rotates after materials are put into the roller, multi-step grinding can be carried out through the groups of grinding balls, and the grinding effect is good. The stirring rod and the stirring blade in the stirring mechanism can fully mix the materials. The brush in the cleaning mechanism can clean the corresponding filter screen, and the filtering efficiency of the filter screen is kept.

Description

Ball mill mixing device

technical field

The invention relates to the technical field of rare earth processing equipment, in particular to a ball mill mixing device.

Background technique

Rare earth is a general term for lanthanide elements, scandium and yttrium in the chemical periodic table, a total of seventeen metal elements. During rare earth processing, materials need to be crushed and mixed, so a ball mill mixing device needs to be used to mix and mix materials. Abrasive work.

The existing ball mill mixing device has a simple structure, only adding grinding balls into the drum. On the one hand, the crushing efficiency is not high, and it cannot filter the material while being crushed, and the filtered material is re-grinded, and the filter residue remains the same. Continue to crush in the drum; on the other hand, during the mixing and abrasive operations, the mixing is not uniform and the crushing efficiency is low, which is not conducive to improving production efficiency.

SUMMARY OF THE INVENTION

Aiming at the problem that the existing processing device cannot perform multi-step layered abrasives on the ground raw materials and the mixing is not uniform, the present invention provides a ball-milling mixing device.

The present invention adopts the following technical solutions to realize: a ball mill mixing device, including:

roller;

a plurality of grinding balls, which are arranged in the drum and grind the materials in the drum when the drum rotates;

The drum is inclined; the drum is divided into multiple grinding chambers in turn along the downward inclination direction of the drum; the two adjacent grinding chambers are separated by a partition plate; The direction of downward inclination decreases in turn, or at least one opening is opened on the edge of each partition, and a filter screen is arranged in each opening. The mesh diameter of the filter screen on each partition is the same, and the filter screen on different partitions The diameter of the mesh decreases in turn along the direction of the downward inclination of the drum;

Multiple grinding balls are divided into multiple grinding ball groups corresponding to multiple grinding chambers, and each grinding ball group is correspondingly distributed in the corresponding grinding chamber. The diameter of the grinding balls in the ball group decreases sequentially along the direction of the downward inclination of the drum;

The ball mill mixing device also includes a cleaning mechanism;

The cleaning mechanism includes: an inner shaft, one end of which extends from one end of the drum and passes through the partition to reach the other end of the drum, the inner shaft is located on the rotation centerline of the drum; Brushes, each brush is used to clean the corresponding filter screen when the inner shaft rotates, and each brush is located on the upward side of the corresponding filter screen along the inclination direction of the drum; Rod 1, one end of which is used to fix the brush, and the other end is fixedly connected to the inner shaft; the driving device 1 for driving the inner shaft to rotate, the driving device 1 includes a motor 1, and the motor shaft of the motor 1 is connected to the inner shaft through a transmission chain. The shaft is located at the end outside the drum.

As a further improvement of the above solution, the rotation direction of the drum is opposite to the rotation direction of the inner shaft.

As a further improvement of the above solution, a vibration motor for generating vibration is provided at the connection part between the brush and the first rod.

As a further improvement of the above scheme, one side of each filter screen is correspondingly provided with a funnel hopper, and each funnel hopper is located on the downward side of the corresponding filter screen along the inclination direction of the drum and is fixed on the partition where the corresponding filter screen is located, The hopper is used to convey the material along the downward slope of the drum and to limit the return of the material.

As a further improvement of the above scheme, one end of the drum is provided with a driving device 2 for driving the drum to rotate; the driving device 2 includes:

motor two;

A reduction box, which is used to reduce the transmission of the second motor;

Transmission chain two;

One end of the driving shaft is fixedly connected to the other end of the drum, and the other end is connected to the reduction box through the second transmission chain, and the driving shaft is located on the rotation center line of the drum.

As a further improvement of the above solution, a feed port for inputting materials is set on the top grinding bin along the downwardly inclined direction of the drum, and a cover 1 for closing the feed port is installed in the feed port; A discharge port for taking out materials is provided on the bottom of the grinding chamber in the downward inclined direction, and a cover 2 for closing the discharge port is installed in the discharge port.

As a further improvement of the above solution, a plurality of stirring rods are fixed on the area of the inner shaft located in each grinding chamber, the other end of the stirring rod is connected to a stirring blade, and a plurality of sieve holes are opened in the stirring blade.

As a further improvement of the above scheme, the ball mill mixing device also includes a scraping mechanism, which is used to scrape up the material at the angle between the baffle and the inner wall of the drum when the inner shaft rotates; the scraping mechanism includes:

a plurality of scrapers corresponding to a plurality of separators respectively, each scraper is located on the upward side of the corresponding separator along the inclination direction of the drum, and the scrapers are close to the inner wall of the drum;

There are a plurality of extension rods 2 corresponding to the plurality of partitions respectively, one end of each extension rod 2 is used for fixing the scraper, and the other end is fixedly connected to the inner shaft.

As a further improvement of the above solution, multiple lifting plates are arranged on the inner wall of the drum, and the multiple lifting plates are divided into multiple groups of lifting plates corresponding to the multiple grinding chambers, and each grinding chamber is provided with a corresponding set of lifting plates. Groups and each group of lifting plates constitutes a spiral structure.

As a further improvement of the above scheme, the ball mill mixing device also includes a device seat, and two brackets for supporting the drum are arranged on the top of the device seat;

One of the brackets is connected to the driving shaft, and the driving shaft is rotatably mounted on the bracket;

The other bracket is connected to a driven shaft, and the driven shaft is rotatably mounted on the bracket. One end of the driven shaft is fixedly connected to the other end of the drum and is located on the rotation center line of the drum. One end extends into the drum from the other end of the driven shaft.

Beneficial effects of the present invention:

1. The ball mill mixing device of the present invention passes through a plurality of grinding chambers separated by partitions in the inclined drum along the downward inclination direction of the drum, and each partition is provided with a filter screen. The hole diameter decreases sequentially in the direction of downward inclination of the drum. In addition, a group of grinding balls are arranged in each grinding chamber, and the diameters of the different groups of grinding balls decrease in turn along the downward inclination direction of the drum, so that the materials can be layered abrasive in multiple grinding chambers and each grinding chamber. Corresponding to the grinding ball, it can carry out targeted abrasive on the material, and the abrasive effect is better.

2. By arranging a cleaning mechanism corresponding to the filter screen in the drum, and the cleaning mechanism includes an inner shaft, a plurality of brushes corresponding to the plurality of filter screens, and an extension rod, the two ends of the extension rod are connected to the inner shaft respectively. and brush. When the inner shaft rotates in the drum, the brush is in contact with one side of the filter screen, and by rubbing the filter screen, the material in the mesh hole of the filter screen is cleaned to maintain the cleaning efficiency of the filter screen. By arranging a vibration motor at the connection part between the brush and the first rod, the brush can generate vibration through the vibration motor, so that the cleaning effect of the brush on the filter screen is better.

3. By arranging a plurality of stirring rods on the inner shaft in the area of each grinding chamber, one end of the stirring rod is connected with a stirring blade. When the inner shaft rotates, the stirring rod and the stirring blade rotate synchronously, so as to fully mix the materials in the drum.

Description of drawings

FIG. 1 is a schematic structural diagram of the ball mill mixing device of the present invention.

FIG. 2 is a side perspective view of the drum according to Embodiment 1 of the present invention.

FIG. 3 is an enlarged view of the region A in FIG. 2 .

FIG. 4 is a schematic structural diagram of a top cover according to Embodiment 1 of the present invention.

FIG. 5 is a side perspective view of the drum according to Embodiment 2 of the present invention.

FIG. 6 is a schematic structural diagram of the scraping mechanism in FIG. 5 .

FIG. 7 is a schematic structural diagram of a ball mill mixing device according to Embodiment 3 of the present invention.

Symbol Description

1 Device base 15 Scraper

2 rollers 16 grinding balls

3 Bracket 17 Extender two

4 motors one 18 brushes

5 Motor two 19 Hopper

6 Top cover 20 Cover one

7 Rubber pad 21 Cover two

8 Bulkhead 22 Filter

9 Grinding chamber 23 Transmission chain one

10 Drive shaft 24 Transmission chain two

11 Inner shaft 25 Vibration motor

12 Stirring bar 26 Lifting plate

13 Stirring blade 28 Gearbox

14 Extension rod one

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

Example 1

Please refer to FIGS. 1 , 2 , 3 and 4 , the ball mill mixing device in this embodiment includes a drum 2 , a plurality of grinding balls 16 , a second driving device, a device seat 1 , a cleaning mechanism, and a stirring mechanism.

The drum 2 is inclined, and a plurality of grinding chambers 9 are sequentially divided in the drum 2 along the downward inclination direction of the drum 2 by the partition plate 8, and the multiple grinding chambers 9 are used for layered grinding of materials. At least one opening is defined on the edge of each partition 8, and a filter screen 22 is arranged in each opening. The mesh diameter of each filter screen 22 decreases sequentially along the downward inclination direction of the drum 2 . One side of each filter screen 22 is correspondingly provided with a funnel hopper 19, and each funnel hopper 19 is located on the downward side of the corresponding filter screen 22 along the inclination direction of the drum 2 and is fixed on the partition 8 where the corresponding filter screen 22 is located, The funnel hopper 19 is used for conveying the material along the downwardly inclined direction of the drum 2 and restricting the backflow of the material. The top grinding chamber 9 of the drum 2 along the downward sloping direction is provided with a feeding port for inputting materials, and a cover 20 for closing the feeding port is installed in the feeding port. A discharge port for taking out materials is provided on the bottom grinding chamber 9 of the drum 2 along the downward sloping direction, and a second cover 21 for closing the discharge port is installed in the discharge port.

In addition, in some embodiments, the separator 8 can be a filter plate, and the mesh diameter of the filter plate decreases sequentially along the downward inclination direction of the drum 2, which can also filter the material in layers.

The plurality of grinding balls 16 are used for grinding the materials in the drum 2 when the drum 2 is rotated. The plurality of grinding balls 16 are divided into a plurality of groups of grinding ball groups corresponding to the plurality of grinding chambers 9, and each group of grinding ball groups is distributed in the corresponding grinding chamber 9, and the diameters of the grinding balls 16 in each group of grinding ball groups are the same and different. The diameters of the grinding balls 16 in the grinding ball group of the group decrease sequentially along the downward inclination direction of the drum 2 . The grinding balls 16 with different diameters can grind the materials in the corresponding grinding chamber 9 in a targeted manner, and the grinding efficiency is high.

The second driving device is used to drive the drum 2 to rotate. The second driving device includes: a second motor 5 , a reduction box 28 , a second transmission chain 24 and a driving shaft 10 . The reduction box 28 is used to reduce the transmission of the second motor 5 . One end of the driving shaft 10 is fixedly connected to the other end of the drum 2 , and the other end of the driving shaft 10 is drivingly connected to the reduction box 28 through the second transmission chain 24 .

Wherein, when the second motor 5 is started, the reduction gear box 28 is used for deceleration transmission, and the torque is increased, and then the driving shaft 10 and the drum 2 are driven to rotate through the second transmission chain 24 . The second motor 5 can provide greater power for the rotation of the drum 2 through the reduction box 28 .

The device seat 1 is used to support the drum 2 , and two brackets 3 for supporting the drum 2 are provided on the top of the device seat 1 . One of the brackets 3 is connected to the driving shaft 10 , and the driving shaft 10 is rotatably mounted on the bracket 3 through a bearing. Another support 3 is connected to a driven shaft, and the driven shaft is rotatably mounted on the support 3 through a bearing, and one end of the driven shaft is fixedly connected to the other end of the drum 2 and is located at the rotation centerline of the drum 2 , one end of the inner shaft 11 extends into the drum 2 from the other end of the driven shaft. The device base 1 firmly supports the drum 2 through the bracket 3 . A top cover 6 is installed on the top of each bracket 3 through fixing bolts. The top cover 6 cooperates with the driving shaft 10 , the driven shaft and the corresponding bearing to fix the corresponding bearing and facilitate the disassembly of the drum 2 .

In addition, an interlayer is provided at the bottom of the device base 1, and a rubber pad 7 is installed in the interlayer. The drum 2 will vibrate when working, and the rubber pad 7 can attenuate the vibration.

To sum up, when the material is processed, the operator opens the cover 1 20 and puts the raw material into the drum 2 . The second motor 5 is started, and the second motor 5 drives the drum 2 to rotate. The material falls into the grinding chamber 9 at the top of the inclined direction of the drum 2 for grinding, and is filtered through the filter screen 22 in sequence, and flows into the grinding chamber 9 of the next layer for multiple grinding. The corresponding grinding balls 16 in the grinding chamber 9 can perform targeted abrasive operations on the materials, and the targeted abrasives can make the abrasive effects better. After the abrasives are completed. Turn off the second motor 5, open the second cover 21, and take out the ground and mixed materials.

The cleaning mechanism is used to clean the mesh holes of the filter screen 22 , and the cleaning mechanism includes: an inner shaft 11 , a driving device 1 , a plurality of brushes 18 and a plurality of extending rods 14 . One end of the inner shaft 11 extends from one end of the drum 2 and reaches the other end of the drum 2 after passing through the partition 8 . The inner shaft 11 is located on the rotation centerline of the drum 2 . A plurality of brushes 18 corresponding to the plurality of filters 22, each brush 18 is used to clean the corresponding filter 22 when the inner shaft 11 rotates, and each brush 18 is located along the roller of the corresponding filter 22. On the upward side of the inclined direction, and the brush 18 is in close contact with the corresponding filter screen 22 . One end of the plurality of extension rods 14 corresponding to the plurality of filter screens 22 is used for fixing the brush 18 , and the other end is fixedly connected to the inner shaft 11 . A driving device 1 for driving the inner shaft 11 to rotate, the driving device 1 includes a motor 1 4 and a transmission chain 1 23 . A vibration motor 25 for generating vibration is arranged at the connection part of the brush 18 and the extension rod 14, and a battery and a switch are arranged inside the extension part of the inner shaft 11. The vibration motor 25 provides power through the battery and is controlled by the switch. The inner shaft 11 is driven by the transmission device 1, and the inner shaft 11 and the driving shaft 10 are coaxially and reversely rotated, so that the rotation directions of the inner shaft 11 and the drum 2 are opposite.

Among them, when the brush 18 passes through the filter screen 22, the bristles will clean the mesh holes of the filter screen 22. Before starting the motor 1 4, the vibration motor 25 is turned on, and the vibration motor 25 drives the brush 18 to carry out the replacement of the filter screen 22. Efficient cleaning.

The stirring mechanism is used to stir and mix the materials in the drum 2 evenly. The stirring mechanism includes a plurality of stirring rods 12 , and the inner shaft 11 is located in the area of each grinding chamber 9 to fix the plurality of stirring rods 12 . The other end of the stirring rod 12 is connected with a stirring blade 13 , and a plurality of sieve holes are provided in the stirring blade 13 . When the inner shaft 11 rotates, the stirring rod 12 and the stirring blade 13 stir and mix the materials.

The ball mill mixing device of this embodiment can use multiple groups of grinding balls 16 in multiple grinding chambers 9 to perform layered grinding of materials, and the material particles can be filtered through the filter screen 22 in layers. During filtration, the stirring mechanism can fully mix the materials. When the filter screen 22 is blocked, it can be cleaned in real time by the cleaning mechanism, the abrasive efficiency is high, and the service life is long.

Example 2

Please refer to Fig. 5 and Fig. 6 , the ball mill mixing device of this embodiment adds a scraping mechanism on the basis of Embodiment 1. When the drum 2 is in the abrasive operation, due to gravity, the material will be on the partition 8 and the inner wall of the drum 2. A certain accumulation is formed at the included angle of the material, and because the extrusion will produce agglomeration, the agglomerated material is not convenient for grinding. The scraping mechanism is used to scrape up the materials accumulated on one side of the filter screen 22 when the drum 2 rotates. One end of the second extension rod 17 is provided with a scraper 15 which is close to the inner wall of the drum 2 , and the other end of the second extension rod 17 is fixedly connected to the inner shaft 11 . When the drum 2 rotates, the scraper 15 can scrape up the materials adhering to the side of the filter screen 22 and the corner formed by the baffle 8 and the inner wall of the drum 2, so that these materials continue to be ground and mixed in the drum 2.

In addition, on the basis of Embodiment 1, the ball mill mixing device of this embodiment also adds a plurality of lifting plates 26 arranged on the inner wall of the drum 2 . plate set. Each group of lifting plates 26 forms a spiral structure in the corresponding grinding chamber 9 .

Among them, when the drum 2 rotates, the lifting plate 26 at the bottom lifts the materials accumulated on the upper surface thereof, and the materials fall from the lifting plate 26 during the rising process, so that the materials are mixed more uniformly. The stirring rod 12 and stirring blade 13 do not come into contact with the lifting plate 26 when rotating.

Example 3

Referring to FIG. 7 , another reduction box 28 is added to the ball mill mixing device of this embodiment on the basis of Embodiment 1. The reduction box 28 is used to reduce the transmission of the motor 1 4 , and the reduction box 28 is connected to the end of the inner shaft 11 located outside the drum 2 through the transmission chain 1 23 .

Among them, when the motor one 4 is started, the reduction box 28 performs deceleration transmission on the motor one 4, and outputs a larger torque, and then drives the inner shaft 11 to rotate through the transmission chain one 23. The reduction box 28 makes the force driving the rotation of the inner shaft 11 larger, so that a larger amount of material can be processed.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.

Claims (7)

1. Ball mill mixing device, including: drum (2); a plurality of grinding balls (16), which are arranged in the drum (2) and grind the material in the drum (2) when the drum (2) rotates; It is characterized in that: the drum (2) is inclined; the drum (2) is divided into a plurality of grinding chambers (9) in turn along the downward inclination direction of the drum (2); The partition plate (8) is isolated; the partition plate (8) adopts filter plates and the mesh diameters of different filter plates are successively reduced along the downwardly inclined direction of the drum, or at least one opening is provided on the edge of each partition plate, and each opening is provided with A filter screen (22), the mesh diameters of the filter screens (22) on each partition (8) are the same, and the mesh diameters of the filter screens (22) on different partitions (8) are along the direction of the drum (2). The direction of the downward slope decreases in turn; The plurality of grinding balls (16) are divided into a plurality of groups of grinding ball groups respectively corresponding to the plurality of grinding chambers (9), and each group of grinding ball groups is correspondingly distributed in the corresponding grinding chamber (9). The diameters of the grinding balls (16) are the same, and the diameters of the grinding balls (16) in the different grinding ball groups decrease in turn along the downward inclination direction of the drum (2); The ball mill mixing device also includes a cleaning mechanism; The cleaning mechanism includes: An inner shaft (11), one end of which extends from one end of the drum (2) and reaches the other end of the drum (2) after passing through the partition plate (8), and the inner shaft (11) is located on the rotation centerline of the drum (2). ; A plurality of brushes (18) corresponding to the plurality of filter screens (22), each brush (18) is used for cleaning the corresponding filter screen (22) when the inner shaft (11) rotates, and each hair brush (18) is used for cleaning the corresponding filter screen (22) The brushes (18) are located on the upward side of the corresponding filter screen (22) along the inclination direction of the drum; A plurality of extension rods (14) corresponding to the plurality of filters (22), one end of which is used to fix the brush (18), and the other end is fixedly connected to the inner shaft (11); the brush (18) and the extension rod one (14) The connection part of 14) is provided with a vibration motor (25) for generating vibration; One side of each filter screen (22) is correspondingly provided with a funnel (19), and each funnel (19) is located on the downward side of the corresponding filter screen (22) along the inclination direction of the drum (2) and is fixed on the corresponding filter screen (22). On the partition (8) where the filter screen (22) is located, the hopper (19) is used for conveying the material along the downwardly inclined direction of the drum (2) and restricting the backflow of the material; The first drive device for driving the inner shaft (11) to rotate, the first drive device includes a motor one (4), and the motor shaft of the motor one (4) is connected to the inner shaft (11) in the drum through a transmission chain one (23). (2) the outer end; A plurality of stirring rods (12) are fixed on the area of the inner shaft (11) located in each grinding chamber (9), and the other end of the stirring rod (12) is connected with a stirring blade (13), and a plurality of stirring blades (13) are opened in the stirring blade (13). sieve. 2 . The ball mill mixing device according to claim 1 , wherein the rotation direction of the drum ( 2 ) is opposite to the rotation direction of the inner shaft ( 11 ). 3 . 3. The ball mill mixing device as claimed in claim 1, characterized in that: one end of the drum (2) is provided with a driving device two that drives the drum (2) to rotate; the driving device two comprises: Motor two (5); a reduction box (28), which is used to reduce the transmission of the second motor (5); Transmission chain two (24); A driving shaft (10), one end of which is fixedly connected to the other end of the drum (2), and the other end of which is connected to the reduction box (28) through a transmission chain two (24), and the driving shaft (10) is located at the rotation center of the drum (2). on-line. 4. The ball mill mixing device as claimed in claim 1, characterized in that: a feeding port for inputting materials is provided on the grinding chamber (9) at the top of the downwardly inclined direction of the drum (2), and the A cover 1 (20) for closing the feeding port is installed in the feeding port; a discharge port for taking out the material is provided on the grinding chamber (9) at the bottom along the downwardly inclined direction of the drum (2). A cover two (21) for closing the discharge opening is installed in the mouth. 5. The ball mill mixing device according to claim 1 is characterized in that: the ball mill mixing device also comprises a scraping mechanism, and the scraping mechanism is used to separate the partition plate (8) and the drum ( 2) The material at the angle of the inner wall is scraped up; the scraping mechanism includes: a plurality of scrapers (15) corresponding to the plurality of separators (8) respectively, each scraper (15) is located on the upward side of the corresponding separator (22) along the inclination direction of the drum, and the scrapers (15) are in close contact with each other the inner wall of the drum (2); A plurality of two extending rods (17) corresponding to the plurality of separators (8) respectively, one end of each two extending rods (17) is used for fixing the scraper (15), and the other end is fixedly connected to the inner shaft (11). 6. The ball mill mixing device according to claim 1, characterized in that: the inner wall of the drum (2) is provided with a plurality of lifting plates (26), and the plurality of lifting plates (16) are divided into a plurality of grinding chambers (9) respectively. ) corresponding to multiple groups of lifting plate groups, each grinding chamber (9) is provided with a corresponding group of lifting plate groups and each group of lifting plate groups constitutes a spiral structure. 7. The ball mill mixing device as claimed in claim 1, characterized in that: the ball mill mixing device further comprises a device seat (1), and two brackets (3) for supporting the drum (2) are arranged at the top of the device seat (1). ); One of the brackets (3) is connected to the driving shaft (10), and the driving shaft (10) is rotatably mounted on the bracket (3); The other bracket (3) is connected to a driven shaft, and the driven shaft is rotatably mounted on the bracket (3), and one end of the driven shaft is fixedly connected to the other end of the drum (2) and located in the drum On the rotation center line of (2), one end of the inner shaft (11) extends into the drum (2) from the other end of the driven shaft.

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