CN113786909A - Stirring drum with groove inside and stirring mill - Google Patents

Abstract

The invention discloses a stirring cylinder with a groove arranged inside and a stirring mill, and relates to the technical field of stirring and grinding equipment. The stirring mill comprises the stirring cylinder. When the grinding medium does high-speed centrifugal motion in the stirring cylinder, the grinding medium is easy to smash towards the inner wall of the stirring cylinder at high speed and smash into the groove due to the limited volume of the stirring cylinder; and because the width of the groove is set, when the grinding medium is hammered into the groove, the grinding medium is supported by the side wall of the groove and is fixed in the groove. After the grinding media with the maximum number are clamped into all the grooves, a protective layer is formed on the inner wall of the mixing drum, and other subsequent grinding media collide with the grinding media clamped in the grooves, so that the probability that the grinding media directly collide with the inner wall of the mixing drum is reduced, and the abrasion rate of the inner wall of the mixing drum is reduced.

Description

Stirring drum with groove inside and stirring mill

Technical Field

The invention relates to the technical field of stirring and grinding equipment, in particular to a stirring cylinder with a groove arranged therein and a stirring mill.

Background

The stirring mill is a device for grinding materials, the grinding mode is that a stirrer inside a stirring cylinder is utilized to drive the materials and grinding media to move, the grinding media collide and extrude the materials in the moving process, and coarse materials are ground into fine materials. During the grinding process, the stirrer stirs the materials and the grinding media in the stirring cylinder to enable the materials and the grinding media to do centrifugal motion in the stirring cylinder. At the high-speed rotatory in-process of agitator, grinding medium removes to the direction that is close to the churn inner wall, leads to grinding medium can collide the churn inner wall, and in the long run, the churn inner wall can receive wearing and tearing, influences the grinding effect, still need change the churn when serious, and is very inconvenient.

In view of the above, some agitator mills reduce the direct wear of the agitator drum by adding an inner liner, which is replaced after the material and grinding media directly impact the inner liner. Because the stirring and mixing drum is large in size, the area of the lining for protecting the stirring drum is correspondingly large, and when the lining needs to be replaced, the labor intensity for detaching the old lining and replacing the new lining is also large, so that the problem that the stirring mill is inconvenient to use due to the fact that the stirring drum is protected by the lining alone is solved.

Disclosure of Invention

The invention aims to: aiming at the existing problems, the stirring cylinder with the inner wall provided with the groove and the stirring mill using the stirring cylinder are provided, wherein the grinding medium is clamped into the groove when colliding with the inner wall of the stirring cylinder, and the stirring cylinder is used as a lining to protect the inner wall of the stirring cylinder and is internally provided with the groove.

The technical scheme adopted by the invention is as follows:

the utility model provides an interior churn of establishing recess, the main part is the churn, and its inside splendid attire has grinding medium, and the churn inner wall is provided with a plurality of recesses, and the minimum width and the minimum length of recess are greater than the maximum width of grinding medium, and when the grinding medium was inside at the churn and is centrifugal motion, can block into the recess internal fixation.

By adopting the technical scheme, when the grinding medium does centrifugal motion, the grinding medium moves to collide the inner wall of the stirring cylinder under the action of centrifugal force, and is easy to clamp into the groove as the grinding medium moves at high speed in the grinding process; after all the grinding media are clamped into the grooves in the largest quantity, a protective layer is formed, most of the subsequent grinding media which do centrifugal motion collide with the grinding media clamped in the grooves and fixed on the inner wall of the mixing drum, the probability that the grinding media directly collide with the inner wall of the mixing drum is reduced, and the abrasion rate of the inner wall of the mixing drum is reduced.

Preferably, a plurality of lining plates are arranged on the inner wall of the mixing drum at intervals, the grooves are formed by gaps between the lining plates, and the grooves are arranged along the radial direction and/or the axial direction of the mixing drum.

By adopting the technical scheme, the groove is formed by splicing the lining plates, the installation is simple and convenient, the structure is simple, and the groove does not need to be additionally formed.

Preferably, the inner wall of the mixing drum is provided with a lining plate, the grooves are formed in the lining plate, and the grooves are arranged along the radial direction and/or the axial direction of the mixing drum.

By adopting the technical scheme, the grinding medium and the stirring cylinder are completely isolated, and the lining plate collides firstly before the grinding medium is not clamped into the groove; the lining plate is provided with a groove, the grinding medium is clamped in the groove on the lining plate, and the auxiliary lining plate protects the mixing drum and prevents the mixing drum from being worn; the grinding medium clamped in the groove also protects the lining plate to a certain extent, and the abrasion rate of the lining plate is reduced.

Preferably, several grooves are combined to form a grid shape.

By adopting the technical scheme, a large amount of grinding media can be clamped into the grooves with enough area, and after the grinding media with the largest amount are clamped into the grooves, the probability of collision between the grinding media in other centrifugal motions and the inner wall of the mixing drum or the lining plate is reduced, and the abrasion probability of the inner wall of the mixing drum or the lining plate is reduced again.

A stirring mill comprises a stirring cylinder with a groove arranged therein, wherein materials are contained in the stirring cylinder.

Preferably, the stirring shaft is connected with in the stirring barrel in a rotating mode, the stirring shaft extends along the preset direction to form a stirring part, the stirring shaft rotates relative to the stirring barrel to drive the stirring part to rotate, and the stirring part stirs materials and grinding media in the stirring barrel and enables the materials and the grinding media to do centrifugal motion along the stirring barrel.

By adopting the technical scheme, the stirring piece is used for stirring the materials and the grinding media inside the stirring cylinder to drive the materials and the grinding media to do centrifugal motion, and in the process, the grinding media collide and extrude the materials to realize the grinding function.

Preferably, the stirring part extends along the preset direction to form an enhanced stirring part, the stirring part rotates to drive the enhanced stirring part to rotate, and the enhanced stirring part stirs materials and grinding media at the bottom of the stirring cylinder to lift up and enables the materials and the grinding media to do centrifugal motion along the stirring cylinder.

Adopt above-mentioned technical scheme, in the grinding process, the inside material of churn and grinding media receive gravity easily to pile up in the churn bottom, and the reinforcing stirring piece is used for mixxing material and the grinding media that is located the churn bottom, prevents that the material from piling up in the churn bottom, influences the grinding progress to prevent that grinding media from piling up in the churn bottom, influence the grinding effect, can't merge into in a large number and grind the material, influence the grinding effect of material.

Preferably, the beginning end of the mixing drum is provided with a feeding hole, the tail end of the mixing drum is provided with a discharging hole, and the material enters the inside of the mixing drum from the feeding hole and is output from the discharging hole.

By adopting the technical scheme, the whole grinding process of the materials is from the initial end to the tail end of the mixing drum, the materials enter from the feeding hole, are output from the discharging hole after being ground, the flowing direction of the ground materials is regulated, and the finest materials formed by grinding are output from the position of the discharging hole at the tail end of the mixing drum.

Preferably, a separating device is arranged outside the mixing drum, the separated materials and the grinding media are separated, an inlet of the separating device is communicated with a discharge hole of the mixing drum, and the materials and the grinding media inside the mixing drum are output to the separating device through the discharge hole of the mixing drum to be separated.

By adopting the technical scheme, the materials and the grinding media are output together from the discharge hole, and the grinding media enter the mixing drum together with new materials, so that the grinding media are prevented from being accumulated near the discharge hole under the action of the mixing piece. After a part of grinding media are clamped into the grooves, the quantity of the grinding media in the mixing drum is reduced, at the moment, the materials and the grinding media are output together and are separated through the separating device, and then the separated grinding media and new grinding media or a large quantity of new grinding media are directly placed into the mixing drum, so that the influence on the grinding effect of the materials due to the insufficient quantity of the grinding media is prevented.

Preferably, the mixing drum is provided with an air inlet at the beginning and an air outlet at the end, and the direction of the air blown into the mixing drum from the air inlet is from the beginning to the end of the mixing drum.

By adopting the technical scheme, wind is blown into the stirring cylinder from the air inlet, the blowing force generated by the wind pushes the materials and the grinding media in the stirring cylinder to move, the materials and the grinding media are ensured to move from the initial end to the tail end of the stirring cylinder, the flowability of the materials and the grinding media is increased, and the grinding efficiency is increased.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that: when the grinding medium does high-speed centrifugal motion in the stirring cylinder, the grinding medium is easy to smash towards the inner wall of the stirring cylinder at high speed and smash into the groove due to the limited volume of the stirring cylinder; and because the width of the groove is set, when the grinding medium is hammered into the groove, the grinding medium is supported by the side wall of the groove and is fixed in the groove. After the grinding media with the maximum number are clamped into all the grooves, a protective layer is formed on the inner wall of the mixing drum, and other subsequent grinding media collide with the grinding media clamped in the grooves, so that the probability that the grinding media directly collide with the inner wall of the mixing drum is reduced, and the abrasion rate of the inner wall of the mixing drum is reduced.

Drawings

FIG. 1 is a front perspective view of a stirring mill.

FIG. 2 is a front perspective view of the agitator mill except for the separating apparatus.

FIG. 3 is a partial view showing the development of the inner wall and lining of the mixing drum in example 1 or 2.

FIG. 4 is a sectional view taken along FIG. 3A-A in the case of example 1.

FIG. 5 is a sectional view taken along FIG. 3A-A in the case of example 2.

The labels in the figure are: a mixing drum-1, a lining plate-2, a mixing shaft-3, a mixing piece-4, an enhanced mixing piece-5, a feeding pipe-6, a discharging pipe-7, a separating device-8, a material ball separator-81, an air outlet pipe-9 and a driver-10.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1:

referring to fig. 1 to 4, a mixing drum 1 with grooves therein is a main body of the mixing drum 1, grinding media are contained in the mixing drum 1, a plurality of lining plates 2 are arranged on the inner wall of the mixing drum 1 at intervals, the grooves are formed by gaps between the lining plates 2 and the lining plates 2, the grooves are arranged along the radial direction and the axial direction of the mixing drum 1, and all the grooves are combined to form a grid shape. When the grinding medium does centrifugal motion, the grinding medium moves to collide the inner wall of the stirring cylinder 1 under the action of centrifugal force, and is easy to clamp into the groove due to high-speed movement of the grinding medium in the grinding process; after all the grinding media are clamped into the grooves in the largest quantity, a protective layer is formed, most of the subsequent grinding media which do centrifugal motion collide with the grinding media clamped in the grooves and fixed on the inner wall of the mixing drum 1, the probability that the grinding media directly collide with the inner wall of the mixing drum 1 is reduced, and the abrasion rate of the inner wall of the mixing drum 1 is reduced. The grooves are formed by splicing the lining plates 2, so that the mounting is simple and convenient, the structure is simple, and the grooves do not need to be additionally formed. A large amount of grinding media can be clamped into the grooves with enough area, and after the grinding media with the largest amount are clamped into the grooves, the probability that other grinding media in centrifugal motion collide with the inner wall of the mixing drum 1 or the lining plate 2 is reduced, and the abrasion probability of the inner wall of the mixing drum 1 or the lining plate 2 is reduced again.

The groove is rectangular, the length of the grating is a, the width of the grating is b, the thickness of the lining plate 2 is c, a + c is the maximum distance between the lining plate 2 and the lining plate 2, and b + c is the minimum distance between the lining plate 2 and the lining plate 2; the length of the inner wall of the stirring cylinder 1 is h, the grinding medium is a medium ball, the diameter of the medium ball is d, and all the sizes meet the following requirements: a + c > 5(b + c) > 5 d; d is more than h and less than 3 d. The size is set to ensure that a plurality of grinding media can be clamped into each groove while the grinding media can be clamped into the grooves; the least number of lining plates 2 are arranged to form the most stable combination of lining plates 2, so that the sufficient number and density of the grooves are ensured, and the protective layer with the largest area is formed when the largest number of grinding media are clamped into the grooves.

The mixing drum 1 is any one of or a combination of at least two of a cylinder shape, a cone shape, a polygon shape, a curve shape and a fold line shape. The lining plate 2 is made of a common steel plate or a wear-resistant steel plate and is fixed on the inner wall of the mixing drum 1 in a bolt mode or a welding mode by forming screw holes.

A stirring mill comprises a stirring cylinder 1 with a groove arranged therein, wherein the stirring cylinder 1 is internally provided with materials.

The stirring cylinder 1 is rotationally connected with a stirring shaft 3, and the stirring shaft 3 horizontally penetrates through the stirring cylinder 1 and is rotationally connected with the cylinder wall of the stirring cylinder 1; the stirring shaft 3 is driven to rotate by a driver 10. The stirring shaft 3 extends along the preset direction to be provided with a plurality of stirring pieces 4, the stirring shaft 3 rotates relative to the stirring cylinder 1 to drive the stirring pieces 4 to rotate, and the stirring pieces 4 stir the materials and the grinding media in the stirring cylinder 1 and enable the materials and the grinding media to do centrifugal motion along the stirring cylinder 1. The stirring piece 4 is used for stirring the materials and the grinding media inside the stirring cylinder 1 and driving the materials and the grinding media to do centrifugal motion, and in the process, the grinding media collide and extrude the materials to realize the grinding function. The stirring element 4 is at an angle of between 0 ° and 180 ° to the stirring shaft 3, excluding 0 ° and 180 °, preferably at an angle of 90 °. The stirring member 4 is in the shape of any one of a rod, a disk, a spiral, or a combination of at least two.

Stirring 4 extends along the predetermined direction and has a plurality of reinforcing stirring 5, and stirring 4 rotatory drive reinforcing stirring 5 is rotatory, and reinforcing stirring 5 stirs the material and the grinding medium of 1 bottom of churn and raises to make its both be centrifugal motion along churn 1. In the grinding process, the material and the grinding medium inside the mixing drum 1 are easily accumulated at the bottom of the mixing drum 1 by gravity, the reinforcing stirring piece 5 is used for stirring the material and the grinding medium which are positioned at the bottom of the mixing drum 1, the material is prevented from being accumulated at the bottom of the mixing drum 1, the grinding progress is influenced, the grinding medium is prevented from being accumulated at the bottom of the mixing drum 1, the material cannot be greatly blended and ground, and the grinding effect of the material is influenced. The included angle between the reinforced stirring piece 5 and the stirring piece 4 is 0-180 degrees, excluding 0-180 degrees; the preferred angle is 90 °. The reinforced stirring member 5 is in the shape of any one of a bar, a plate, a strip and a polygon or a combination of at least two of the above. The reinforcing stirring members 5 extending from at least two adjacent stirring members 4 form a squirrel cage structure which ensures that the material can be ground sufficiently.

A feed inlet is formed in the beginning end of the mixing drum 1, a discharge outlet is formed in the tail end of the mixing drum 1, the feed inlet is located at the upper part of the beginning end of the mixing drum 1, the discharge outlet is located at the lower part of the tail end of the mixing drum 1, and materials enter the mixing drum 1 through the feed inlet and are output through the discharge outlet; the feed inlet intercommunication extends there is inlet pipe 6, and the discharge gate intercommunication extends there is discharging pipe 7. The whole grinding process of the materials is from the initial end to the tail end of the mixing drum 1, the materials enter the mixing drum 1 from the feeding hole, are output from the discharging hole after being ground, the flowing direction of the ground materials is regulated, and the finest materials formed by grinding are output from the position of the discharging hole at the tail end of the mixing drum 1.

The outside of the mixing drum 1 is provided with a separating device 8, the separating device 8 comprises a ball separator 81, the separated materials and the grinding media, the inlet of the separating device 8 is communicated with the discharge hole of the mixing drum 1, the materials and the grinding media inside the mixing drum 1 are output to the separating device 8 through the discharge hole of the mixing drum 1 for separation, the separating device 8 is provided with two outlets, the first outlet is used for discharging the materials, the second outlet is used for discharging the grinding media, the second outlet of the separating device 8 is communicated with the feed inlet of the mixing drum 1, and the grinding media separated by the separating device 8 enter the mixing drum 1 through the feed inlet. The material and the grinding medium are together output from the discharge port, and the separated grinding medium enters the mixing drum 1 along with new material, so that the grinding medium is prevented from being accumulated near the discharge port under the action of the mixing piece 4. After a part of grinding media are clamped into the grooves, the quantity of the grinding media in the mixing drum 1 is reduced, at the moment, the materials and the grinding media are output together and are separated through the separating device 8, and then the separated grinding media and new grinding media are placed into the mixing drum 1, so that the influence on the grinding effect of the materials due to the insufficient quantity of the grinding media is prevented. When the separation device 8 is positioned above the mixing drum 1, the grinding medium and the materials in the mixing drum 1 are lifted to the separation device 8 from the outlet of the mixing drum 1; when the separation device 8 is located below the mixing drum 1, the grinding medium and the material in the mixing drum 1 enter the separation device 8 under the action of gravity, and the separated grinding medium is lifted from the separation device 8 into the mixing drum 1.

The starting end of the mixing drum 1 is provided with an air inlet, the tail end of the mixing drum 1 is provided with an air outlet, the direction of air blown into the mixing drum 1 from the air inlet is from the starting end to the tail end of the mixing drum 1, and the air outlet is positioned at the upper part of the tail end of the mixing drum 1; the air inlet and the feed inlet are in the same opening, and the air outlet is communicated and extended with an air outlet pipe 9. Wind blows into the stirring cylinder 1 from the air inlet, and the blowing force generated by the wind pushes the materials and the grinding media in the stirring cylinder 1 to move, so that the materials and the grinding media move from the starting end to the tail end of the stirring cylinder 1, the flowability of the materials and the grinding media is increased, and the grinding efficiency is increased.

Example 2:

referring to fig. 5, the forming manner of the groove is different from that of embodiment 1: the inner wall of the mixing drum 1 is provided with a lining plate 2, grooves are formed in the lining plate 2 and are arranged along the radial direction and the axial direction of the mixing drum 1, and all the grooves are combined to form a grid shape. Completely isolating the grinding medium from the mixing drum 1, and colliding a lining plate 2 before the grinding medium is not clamped into the groove; the lining plate 2 is provided with a groove, the grinding medium is clamped in the groove on the lining plate 2, the auxiliary lining plate 2 protects the mixing drum 1, and the mixing drum 1 is prevented from being worn; the grinding medium clamped in the groove also protects the lining plate 2 to a certain extent, and the abrasion rate of the lining plate 2 is reduced.

Example 3:

unlike the formation of the grooves in examples 1 and 2: the inner wall of the mixing drum 1 is directly provided with a grid-shaped groove, a lining plate 2 does not need to be fixed, and the mixing drum 1 is directly manufactured into a required shape in the previous period.

The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to aid in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims (10)

1. The stirring cylinder with the grooves in the inner part is characterized in that the main body is the stirring cylinder, grinding media are contained in the stirring cylinder, a plurality of grooves are formed in the inner wall of the stirring cylinder, the minimum width and the minimum length of each groove are larger than the maximum width of each grinding media, and the grinding media can be clamped into the grooves to be fixed when performing centrifugal motion in the stirring cylinder.

2. A mixer drum with built-in grooves according to claim 1, wherein the inner wall of the mixer drum is provided with a plurality of lining plates at intervals, the grooves are formed by gaps between the lining plates, and the grooves are arranged along the radial direction and/or the axial direction of the mixer drum.

3. A mixer drum with built-in grooves according to claim 1, wherein the inner wall of the mixer drum is provided with a lining plate, the grooves are formed on the lining plate, and the grooves are arranged along the radial direction and/or the axial direction of the mixer drum.

4. A grooved mixing drum according to any of claims 1 to 3 wherein a plurality of said grooves are combined to form a grid pattern.

5. A stirring mill, characterized by comprising the stirring cylinder with the groove arranged therein according to any one of claims 1 to 4, wherein the stirring cylinder is filled with materials.

6. A mixer mill according to claim 5, wherein a mixer shaft is rotatably connected to the mixer drum, the mixer shaft having a mixer element extending in a predetermined direction, the mixer shaft rotating relative to the mixer drum to drive the mixer element to rotate, the mixer element agitating the material and grinding media in the mixer drum and causing them to move centrifugally along the mixer drum.

7. A mixer according to claim 6, wherein the agitator member has an enhanced agitator member extending in a predetermined direction, rotation of the agitator member driving rotation of the enhanced agitator member, the enhanced agitator member agitating material and grinding media at the bottom of the agitator drum upwardly and causing both to move centrifugally along the agitator drum.

8. The agitator mill of claim 5, wherein the agitator drum has a feed inlet at a beginning end and a discharge outlet at an end, and the material enters the agitator drum through the feed inlet and is discharged through the discharge outlet.

9. The agitator mill of claim 8, wherein a separator is disposed outside the agitator drum for separating the material from the grinding media, an inlet of the separator is connected to the discharge port of the agitator drum, and the material and the grinding media inside the agitator drum are discharged from the discharge port of the agitator drum to the separator for separation.

10. A mixer mill according to claim 5, wherein the mixer drum has an air inlet at a leading end thereof and an air outlet at a trailing end thereof, and the direction of the air blown into the mixer drum from the air inlet is from the leading end to the trailing end of the mixer drum.

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