CN212856014U

CN212856014U - Ball mill

Info

Publication number: CN212856014U
Application number: CN202021129573.1U
Authority: CN
Inventors: 龙毅
Original assignee: Shaanxi Huifeng High Performance Powder Material Co ltd
Current assignee: Shaanxi Huifeng High Performance Powder Material Co ltd
Priority date: 2020-06-17
Filing date: 2020-06-17
Publication date: 2021-04-02
Anticipated expiration: 2030-06-17

Abstract

The utility model relates to the technical field of concrete processing equipment, and discloses a ball mill, which comprises a frame, a rotary drum arranged on the frame and a driving device for driving the rotary drum to rotate; the rotary drum comprises two hollow shafts rotatably arranged on the rack, an inner drum, an outer drum and a discharging device, wherein the two ends of the inner drum are respectively connected with the two hollow shafts; first through holes are uniformly distributed in the side wall of the inner cylinder, a cavity is formed between the inner cylinder and the outer cylinder, and the first through holes are used for enabling ground materials to enter the cavity; the discharging device comprises a discharging pipe arranged on the outer barrel and a first electromagnet arranged on the cross section of the discharging pipe and used for sucking the steel balls; and second through holes for allowing materials to pass through are uniformly distributed on the first electromagnet. The utility model has the advantage of convenient steel ball recovery.

Description

Ball mill

Technical Field

The utility model belongs to the technical field of the technique of concrete processing equipment and specifically relates to a ball mill is related to.

Background

The ball mill is the key equipment for crushing the materials after the materials are crushed. In this type of ore mill, a certain number of steel balls are loaded into the barrel as grinding media, which are typically steel balls, and the grinding media are loaded into the barrel according to different diameters and a certain proportion. The material is loaded into the cylinder from the feeding end of the ball mill, when the ball mill cylinder rotates, the grinding medium is attached to the lining plate of the cylinder and taken away by the cylinder due to the action of inertia, centrifugal force and friction force, when the grinding medium is taken to a certain height, the grinding medium is thrown off due to the action of gravity of the grinding medium, and the falling grinding medium breaks the material in the cylinder like a projectile.

However, after the grinding medium is used for a long time, the volume of the grinding medium is reduced after the surface of the grinding medium is worn, and the grinding medium can run out of the discharge hole along with the ground material, so that the recovery of the grinding medium is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a ball mill, which has the advantage of convenient steel ball recovery.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a ball mill comprises a frame, a rotary drum arranged on the frame and a driving device for driving the rotary drum to rotate;

the rotary drum comprises two hollow shafts rotatably arranged on the rack, an inner drum, an outer drum and a discharging device, wherein the two ends of the inner drum are respectively connected with the two hollow shafts;

first through holes are uniformly distributed in the side wall of the inner cylinder, a cavity is formed between the inner cylinder and the outer cylinder, and the first through holes are used for enabling ground materials to enter the cavity;

the discharging device comprises a discharging pipe arranged on the outer barrel and a first electromagnet arranged on the cross section of the discharging pipe and used for sucking the steel balls;

and second through holes for allowing materials to pass through are uniformly distributed on the first electromagnet.

By adopting the technical scheme, the rotary drum is divided into two layers and comprises an inner cylinder and an outer cylinder, hollow shafts are connected with two ends of the inner cylinder, raw materials and steel balls are added into the inner cylinder through an opening of the hollow shaft, the hollow shaft drives the inner cylinder to rotate around a horizontal axis at a certain rotating speed under the driving of a driving device, the steel balls and the raw materials in the inner cylinder reach a certain height along with the inner cylinder under the action of centrifugal force and friction force, and when the self gravity is greater than the centrifugal force, the materials are thrown off or roll down from the inner wall of the inner cylinder, and the ores are crushed due to; the utility model discloses a grinding device, including inner tube and urceolus, the urceolus is equipped with first through-hole on the lateral wall of inner tube, the granule that accords with the grinding particle diameter enters into the cavity that forms between inner tube and the urceolus through first through-hole in, inner tube pivoted in-process urceolus does not rotate, be connected with discharging device on the urceolus, the steel ball that grinds the completion and tiny granule enters into in the discharge tube, drop on first electro-magnet, first electro-magnet circular telegram is given birth to magnetism, produce suction, inhale the steel ball on first electro-magnet, the material that grinds the completion falls out through the second.

The present invention may be further configured in a preferred embodiment as: and a second electromagnet is arranged on the inner wall of the discharge pipe and extends spirally along the axis direction of the discharge pipe.

Through adopting above-mentioned technical scheme, be provided with the second electro-magnet on the inner wall of discharging pipe, the second electro-magnet sets up to the bar structure and is the heliciform along the axis direction of discharging pipe and extends, and when steel ball and material entered into the discharging pipe, the second electro-magnet produced the magnetic field of spiral, and the steel ball receives the appeal in magnetic field at the in-process of whereabouts, is adsorbed on the lateral wall of discharging pipe.

The present invention may be further configured in a preferred embodiment as: the inner wall of the discharge pipe is provided with a plurality of connecting plates in a staggered mode, and the surfaces of the connecting plates are provided with third electromagnets.

Through adopting above-mentioned technical scheme, the connecting plate falls into a plurality of regions with the discharging pipe, and the connecting plate sets up the third electro-magnet on the surface, and the steel ball enters into the discharging pipe, and the in-process that descends, when contacting the third electro-magnet, the steel ball can be inhaled to the suction that the third electro-magnet produced, reduces the quantity that drops at first electro-magnet steel ball as far as, prevents that the steel ball from blockking up the second through-hole, influences the passing through of material.

The present invention may be further configured in a preferred embodiment as: the discharge pipe is in threaded connection with the outer barrel.

Through adopting above-mentioned technical scheme, discharging pipe and urceolus screw thread can be dismantled and be connected for the installation of discharging pipe is all comparatively convenient with pulling down, and the discharging pipe is taken off, gives the electro-magnet outage, makes it lose suction, takes out the steel ball in the discharging pipe.

The present invention may be further configured in a preferred embodiment as: the lateral wall slope of urceolus sets up, discharging device is located the one end that the relief is low.

By adopting the technical scheme, when the materials and the steel balls enter the cavity between the inner barrel and the outer barrel, the materials and the steel balls are rolled down into the discharging device at the lower end along the inclined side wall, so that the materials and the steel balls are convenient to collect.

The present invention may be further configured in a preferred embodiment as: two bearing seats are arranged on the frame, and the hollow shaft is rotatably connected in the bearing seats.

By adopting the technical scheme, the hollow shaft is rotatably connected in the bearing seat, the bearing seat can play a role in fixing and supporting the hollow shaft and the inner cylinder, and the bearing in the bearing seat is convenient for the hollow shaft to rotate.

The present invention may be further configured in a preferred embodiment as: the gear ring is arranged on the outer ring of the inner cylinder, and the gear is arranged on the rack;

the gear ring is meshed with the gear.

By adopting the technical scheme, the gear is matched with the gear ring, so that the large rotating speed output by the driving device is converted into the small rotating speed, and the inner cylinder is kept at a proper speed in the rotating process.

The present invention may be further configured in a preferred embodiment as: the driving device is a motor, and the output end of the motor is connected to the gear.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the grinded materials and the steel balls enter the chamber through the inner cylinder and finally enter the discharge pipe, a first electromagnet in the discharge pipe is electrified to generate magnetism for absorbing the steel balls, and the materials fall out of a first through hole formed in the first electromagnet to realize the recovery of the steel balls;

2. the second electromagnet and the third electromagnet arranged in the discharge pipe are used for generating larger suction force, so that the steel balls are adsorbed in the discharge pipe as far as possible, and the recovery efficiency is improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present embodiment.

Fig. 2 is a schematic structural view of the inner cylinder in the present embodiment.

FIG. 3 is a schematic structural diagram of the inner cylinder and the outer cylinder in the present embodiment.

Fig. 4 is a schematic structural diagram of the discharging device in this embodiment.

Fig. 5 is a schematic structural diagram of the driving device in the present embodiment.

In the figure, 1, a frame; 11. a bearing seat; 2. a rotating drum; 21. a hollow shaft; 22. an inner barrel; 221. a first through hole; 23. an outer cylinder; 24. a chamber; 3. a discharging device; 31. a discharge pipe; 32. a first electromagnet; 321. a second through hole; 33. a second electromagnet; 34. a connecting plate; 35. a third electromagnet; 41. a ring gear; 42. a gear; 51. an electric motor.

Detailed Description

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

Referring to fig. 1, for the utility model discloses a ball mill, including frame 1, rotary drum 2 and drive rotary drum 2 pivoted drive arrangement. The side wall of the rotary drum 2 is connected with a discharging device 3, the driving device drives the rotary drum 2 to rotate, the rotary drum 2 rotates, and raw materials and steel balls in the rotary drum 2 are ground. After the grinding is finished, the materials and the steel balls to be recycled enter the discharging device 3, and the discharging device 3 can collect the steel balls when outputting the materials, so that the steel balls are convenient to recycle.

Referring to fig. 2, the drum 2 includes two hollow shafts 21 rotatably connected to the frame 1, and the two hollow shafts 21 are coaxially connected. Two bearing blocks 11 are installed on the frame 1, two hollow shafts 21 are installed on the frame 1 through the bearing blocks 11, and the bearing blocks 11 play a role in supporting and fixing the hollow shafts 21. An inner cylinder 22 is connected between the two hollow shafts 21, and two ends of the inner cylinder 22 are detachably connected to the two hollow shafts 21 through bolts respectively. The hollow shaft 21 has openings through which material and grinding media are introduced into the inner barrel 22. The hollow shaft 21 rotates to drive the inner cylinder 22 to rotate, the steel balls and the raw materials are thrown off or roll off from the inner wall of the inner cylinder when the gravity of the steel balls and the raw materials is greater than the centrifugal force after the steel balls and the raw materials reach a certain height along with the inner cylinder under the action of the centrifugal force and the friction force in the rotating process, the materials are smashed and continuously run in the inner cylinder 22 under the action of the impact force, and the grinding effect is achieved.

Referring to fig. 3, an outer cylinder 23 is covered on the outer portion of the inner cylinder 22, and the outer cylinder 23 is fixedly connected to the frame 1. The outer cylinder 23 may be a square cylinder or a round cylinder, and in this embodiment, the outer cylinder 23 is a square cylinder. A cavity 24 is formed between the outer cylinder 23 and the inner cylinder 22, baffles are arranged at two ends of the outer cylinder 23 and arranged along the side edge of the outer cylinder 23, and one edge of each baffle is abutted against the inner cylinder 22 and used for sealing openings at two ends of the cavity 24. The side wall of the inner cylinder 22 is uniformly provided with first through holes 221, and the aperture or size of the first through holes 221 is the required particle size. During the rotation of the inner cylinder 22, the outer cylinder 23 is stationary. When the steel balls to be ground are smaller than the grain size of the first through holes 221, the steel balls and the ground materials meeting the grain size requirement enter the chamber 24 from the first through holes 221 under the action of centrifugal force.

Referring to fig. 3 and 4, the discharging device 3 is provided on a side wall of the outer cylinder 23. The discharge device 3 comprises a discharge pipe 31 detachably connected to the bottom wall of the outer cylinder 23. The upper end of the discharge pipe 31 is communicated with the chamber 24, and a first electromagnet 32 for sucking the steel ball is arranged in the discharge pipe 31. The first electromagnet 32 is fixedly connected to the inner wall of the tapping pipe 31, and the first electromagnet 32 can be arranged horizontally or obliquely on the cross section of the tapping pipe 31. It is only necessary to ensure that the projection of the first electromagnet 32 on the bottom surface coincides with the projection of the tapping pipe 31 on the bottom surface. The first electromagnet 32 is uniformly provided with second through holes 321, and the aperture of the second through holes 321 is the same as that of the first through holes 221, so that the material can pass through the first electromagnet 32. When materials and steel balls enter the discharge pipe 31 from the cavity 24, the first electromagnet 32 is electrified to generate magnetism, so that attraction is generated, the steel balls are adsorbed on the first electromagnet 32, and meanwhile the materials can pass through the second through hole 321, and the recovery of the steel balls is realized.

Referring to FIG. 4, in order to better recover the steel balls in the discharge pipe 31, the second electromagnets 33 are provided on the inner wall of the discharge pipe 31, the second electromagnets 33 are provided in a strip shape, and the second electromagnets 33 are spirally distributed along the longitudinal direction of the discharge pipe 31. The lowermost end of the second electromagnet 33 is positioned above the first electromagnet 32, and the upper end is positioned near the outer cylinder 23. Therefore, when the steel balls and the ground materials enter the discharge pipe 31, the spiral magnetic field generated after the second electromagnet 33 is electrified can adsorb the steel balls on the second electromagnet 33 in the process of rolling down, so that the steel balls can be conveniently recovered.

In order to further recover the steel balls in the discharge pipe 31, a plurality of connecting plates 34 are arranged on the inner wall of the discharge pipe 31, in this embodiment, six connecting plates 34 are provided, three connecting plates 34 are parallel to each other to form a group, two groups of connecting plates 34 are staggered and perpendicular to each other, and the discharge pipe 31 is divided into a plurality of different areas. Both surfaces of each connecting plate 34 are mounted with third electromagnets 35. When the material and the steel ball fall along the discharging pipe 31, the third electromagnet 35 generates a suction force to the steel ball in the falling process, so that the steel ball is adsorbed on the third electromagnet 35 as much as possible. The connecting plate 34 is also positioned above the first electromagnet 32, and the side edge of the connecting plate 34 is fixed in the gap between the second electromagnets 33, so that when steel balls and materials enter the discharge pipe 31, the third electromagnet 35 on the connecting plate 34 and the second electromagnet 33 arranged on the inner wall of the discharge pipe 31 act together to generate strong suction force, and the steel balls are adsorbed on the third electromagnet 35 or the second electromagnet 33.

When the steel ball is adsorbed in the discharge pipe 31, the steel ball needs to be taken out of the discharge pipe 31. Therefore, an external thread is provided on the side wall of the discharge pipe 31 near one end of the outer cylinder 23, an internal thread hole matched with the external thread is provided on the bottom wall of the outer cylinder 23, and the discharge pipe 31 is screwed on the outer cylinder 23. The threaded detachable connection facilitates detachment and installation of the discharge pipe 31, when the discharge pipe 31 is detached, the first electromagnet 32, the second electromagnet 33 and the third electromagnet 35 are powered off, after the power is off, the electromagnets lose suction force, and after the steel ball falls off from the electromagnets, the steel ball can be taken out from the discharge pipe 31.

Referring to fig. 3, in order to allow both the material and the steel balls to enter the discharging device 3 from the chamber 24, the bottom wall of the outer cylinder 23 is inclined such that the distance from one end of the outer cylinder 23 to the other end thereof from the bottom surface gradually decreases. The discharging device 3 is arranged at the lower end of the outer cylinder 23, so that the material in the chamber 24 slides along the inclined bottom wall towards the discharging device 3 and smoothly enters the discharging device 3.

Referring to fig. 5, in order to facilitate the rotation of the inner cylinder 22 and the hollow shaft 21, a ring gear 41 is provided on the outer peripheral wall of the inner cylinder 22, and the ring gear 41 is provided at a position close to the hollow shaft 21 at one end. A gear 42 is provided on the frame 1, and the gear 42 and the ring gear 41 mesh with each other. The driving device is set as a motor 51, the motor 51 is installed on the rack 1, an output shaft of the motor 51 is connected to the gear 42 through a coupler, the gear 42 is driven to rotate, the gear 42 rotates, the meshing gear ring 41 rotates, the inner cylinder 22 is driven to rotate, and grinding is achieved.

The implementation principle of the embodiment is as follows: the material and the steel ball enter the inner cylinder 22 from one end of the hollow shaft 21, the motor 51 is started, the motor 51 drives the gear 42 to rotate, the gear 42 is meshed with the gear ring 41 to rotate, and therefore the inner cylinder 22 is driven to rotate, and the material is ground. The grinded particles and steel balls enter the chamber 24 between the inner cylinder 22 and the outer cylinder 23 through the first through hole 221. And finally, the steel ball enters the discharge pipe 31, the material entering the discharge pipe 31 can fall from the second through hole 321 on the first electromagnet 32, and the steel ball can be adsorbed up under the action of the suction force of the second electromagnet 33, the third electromagnet 35 and the first electromagnet 32 when entering the discharge pipe 31, so that the steel ball is convenient to recover.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A ball mill characterized in that: comprises a frame (1), a rotating drum (2) arranged on the frame (1) and a driving device for driving the rotating drum (2) to rotate;

the rotary drum (2) comprises two hollow shafts (21) rotatably arranged on the rack (1), an inner drum (22) with two ends respectively connected with the two hollow shafts (21), an outer drum (23) sleeved on the outer ring of the inner drum (22) and a discharging device (3) arranged on the outer drum (23);

first through holes (221) are uniformly distributed in the side wall of the inner cylinder (22), a chamber (24) is formed between the inner cylinder (22) and the outer cylinder (23), and the first through holes (221) are used for enabling ground materials to enter the chamber (24);

the discharging device (3) comprises a discharging pipe (31) arranged on the outer barrel (23) and a first electromagnet (32) arranged on the cross section of the discharging pipe (31) and used for sucking the steel balls;

and second through holes (321) for allowing materials to pass through are uniformly distributed on the first electromagnet (32).

2. A ball mill according to claim 1, wherein: the inner wall of the discharge pipe (31) is provided with a second electromagnet (33), and the second electromagnet (33) extends spirally along the axial direction of the discharge pipe (31).

3. A ball mill according to claim 1, wherein: the inner wall of the discharge pipe (31) is provided with a plurality of connecting plates (34) in a staggered mode, and the surfaces of the connecting plates (34) are provided with third electromagnets (35).

4. A ball mill according to claim 1, wherein: the discharge pipe (31) is in threaded connection with the outer cylinder (23).

5. A ball mill according to claim 1, wherein: the side wall of the outer cylinder (23) is obliquely arranged, and the discharging device (3) is located at one end with a low terrain.

6. A ball mill according to claim 1, wherein: the frame (1) is provided with two bearing seats (11), and the hollow shaft (21) is rotatably connected in the bearing seats (11).

7. A ball mill according to any one of claims 1 to 6, wherein: the gear ring (41) arranged on the outer ring of the inner cylinder (22) and the gear (42) arranged on the rack (1) are also included;

the gear ring (41) and the gear (42) are meshed with each other.

8. A ball mill according to claim 7, wherein: the driving device is a motor (51), and the output end of the motor (51) is connected to the gear (42).