CN114226047B

CN114226047B - Pre-grinding device suitable for ball mill and ball mill with pre-grinding device

Info

Publication number: CN114226047B
Application number: CN202111530836.9A
Authority: CN
Inventors: 赵强; 胡孙日
Original assignee: Anhui Weineng Power Technology Co ltd
Current assignee: Anhui Weineng Power Technology Co ltd
Priority date: 2021-12-15
Filing date: 2021-12-15
Publication date: 2023-01-20
Anticipated expiration: 2041-12-15
Also published as: CN114226047A

Abstract

The invention relates to a pre-grinding device suitable for a ball mill, wherein the pre-grinding device is arranged at an inlet of a ball mill feeding pipe of the ball mill and comprises an outer cylinder body and an inner cylinder body which are formed into a fixed structure, a first motor is arranged on the outer cylinder body and connected with a first rotating shaft, the lower end of the first rotating shaft is connected with a linkage arm, the lower end of the first linkage arm is connected with a second motor, the inner cylinder body can be driven by the linkage arm to rotate in a reciprocating mode when the first motor operates, an annular vertical plate is connected to the inner bottom wall of the inner cylinder body, a plurality of first screening holes are formed in the side wall of the annular vertical plate, a plurality of second screening holes are formed in the bottom end of the inner cylinder body and located inside the annular vertical plate, a plurality of grinding rollers are embedded between the inner wall of the inner cylinder body and the outer wall of the annular vertical plate, and the plurality of grinding rollers can perform reciprocating circular motion inside the inner cylinder body when the second motor operates. The invention also relates to a ball mill with the pre-grinding device.

Description

Pre-grinding device suitable for ball mill and ball mill with pre-grinding device

Technical Field

The invention belongs to the technical field of ball mills, and particularly relates to a pre-grinding device suitable for a ball mill and the ball mill with the pre-grinding device.

Background

The lead powder is used as the main raw material of the lead-acid storage battery, and the quality of the lead powder directly influences the quality of the lead-acid storage battery product. The production process of the lead powder comprises the steps of melting and casting electrolytic lead into lead columns, adding the lead columns into a ball mill, grinding the lead columns into lead powder, mixing the lead powder, sulfuric acid and various additives into lead plaster through a plaster mixer, and then coating the lead plaster on a grid to obtain the polar plate. The performance of the lead powder directly influences the quality of the pole plate, so the lead powder manufacturing process is a very key process in the production process of the storage battery.

One particular form of ball mill is a stirred ball mill. Stirred ball mills comprise a vertically or horizontally disposed, usually substantially cylindrical grinding vessel, 70 to 90% of which is filled with grinding bodies. In the case of stirred ball mills, the grinding chamber is usually mounted so as to be stationary and not to rotate. An agitator with suitable agitation elements provides a high intensity movement of the grinding bodies. The grinding stock suspension is continuously pumped through the grinding chamber. The suspended solids are ground or dispersed by impact or shear forces between the milling bodies. The separation of the grinding stock and the grinding bodies is carried out by means of suitable separation devices at the outlet from the mill.

For example, chinese patent CN2019112230454 discloses a ball mill with high milling efficiency, two ends of a ball mill body are connected with a frame for fixing the ball mill body through a coupling, the frame is connected with the coupling through threads, the interior of the ball mill body is hollow, and milling balls are arranged in the ball mill body; this ball mill has higher efficiency of milling, can grind the material into powdered fast, but this ball mill is direct when carrying out the ball-milling to great material, the material need ball-milling longer time just can the ball-milling be powdered in the ball mill, not only the ball-milling time is longer, and when great material carries out the ball-milling in the ball mill, easily cause the damage to ball mill inside, thereby lead to the maintenance cycle of ball mill to shorten, the maintenance cost of ball mill has been improved, and current pre-grinding device all sets up in other places, need transport the material to the ball mill in after pre-grinding, not only can improve the cost of transportation like this, and waste time.

Disclosure of Invention

The invention aims to solve the existing problems and provides a pre-grinding device suitable for a ball mill and the ball mill with the pre-grinding device.

The invention is realized by the following technical scheme:

the utility model provides a pre-grinding device suitable for ball mill, wherein pre-grinding device sets up the ball mill inlet pipe entrance of ball mill to including constituting for fixed outer barrel and the interior barrel that can rotate, the outer diapire of interior barrel with the interior diapire of outer barrel passes through the dwang and connects, be equipped with first motor on the outer barrel, first motor output shaft has first pivot, first pivot lower extreme is connected with the linkage arm, first linkage arm lower extreme is connected with the second motor, interior barrel can pass through when first motor moves the linkage arm drives and is reciprocating rotation, the interior diapire of interior barrel is connected with the ring riser, a plurality of first sieve material holes have been seted up to ring riser lateral wall, interior barrel bottom just is located the inside a plurality of second sieve material holes that have still been seted up of ring riser interior barrel inner wall with it has a plurality of rollers to imbed between the ring riser outer wall, a plurality of roller can be in the second motor moves inside reciprocating circular motion of barrel.

In an embodiment of the present invention, a feeding hopper is disposed at the top end of the outer cylinder, and a discharging pipe is further disposed at the bottom end of the outer cylinder.

In an embodiment of the present invention, the first motor is an inverter motor.

In an embodiment of the invention, the second motor output shaft is fixedly connected with a second rotating shaft, a second sleeve is rotatably sleeved outside the second rotating shaft, the lower end of the second sleeve penetrates through the top end of the inner cylinder and extends into the inner cylinder, the second sleeve is fixedly connected with the top end of the inner cylinder, a second fixing frame is fixedly connected to the circumferential surface of the second sleeve, the second fixing frame is rotatably connected to the outer wall of the inner cylinder, a plurality of rotating frames are fixedly connected to the circumferential surface of the lower end of the first rotating shaft, the lower ends of the plurality of rotating frames are fixedly connected with mounting frames, a connecting rod is fixedly connected between the inner side walls of the mounting frames, and a grinding roller is rotatably sleeved outside the connecting rod.

In an embodiment of the present invention, the lower end of the discharge hopper is communicated with a feed delivery pipe, the feed delivery pipe is made of an elastic material, the top end of the inner cylinder body is provided with an annular groove, the outer side of the lower end of the feed delivery pipe is rotatably sleeved with a hoop, the hoop is rotatably connected with the side wall of the annular groove, and the lower end of the feed delivery pipe penetrates through the hoop and extends into the inner cylinder body.

In an embodiment of the present invention, an elastic member is further disposed between the outer bottom wall of the inner cylinder body and the rotating rod.

In an embodiment of the present invention, the lower end of the rotating lever is disposed to be inclined toward a side close to the first rotating shaft, the second motor is disposed to be inclined toward a side away from the first rotating shaft, and an inclination angle of the second motor is smaller than an inclination angle of the rotating lever.

In an embodiment of the present invention, a conical top is movably connected to a top end of the annular vertical plate.

In one embodiment of the present invention, the first sifter holes are larger in size than the second sifter holes.

In an embodiment of the present invention, the first material sieving hole is a circular truncated cone-shaped hole, the diameter of the first material sieving hole is large at one end, and the diameter of the first material sieving hole is small at the other end, wherein the diameter of the circular hole on the inner wall of the circular upright plate is small, and the diameter of the circular hole on the outer wall of the circular upright plate is large.

In an embodiment of the present invention, the ball mill includes a ball mill feeding pipe, the ball mill feeding pipe is communicated with the blanking pipe, and a ball mill motor is further disposed on one side of the ball mill.

Compared with the prior art, the invention has the following advantages:

according to the invention, the pre-grinding device can be used for grinding the lead blocks with large sizes, so that the size of the lead blocks is reduced, the lead blocks enter the ball mill in the form of small-particle dispersoids, the ball milling efficiency of the ball mill can be effectively improved, and the size of a ball milling medium in the ball mill can be correspondingly reduced as the size of the lead blocks entering the ball mill is reduced, so that the impact strength of the lead blocks and the ball milling medium on the inner wall of the ball mill in the operation process of the ball mill can be reduced, and the loss of the ball mill is correspondingly reduced.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a perspective view of the outer structure of the inner cylinder according to the present invention;

FIG. 3 is a perspective view of the inner cylinder structure of the present invention;

FIG. 4 is a schematic perspective view of the annular vertical plate and the conical top of the present invention;

FIG. 5 is a schematic perspective view of the ring-shaped vertical plate and the bottom end of the inner cylinder according to the present invention;

FIG. 6 is a schematic view of the connection structure of the outer cylinder and the inner cylinder in the present invention;

FIG. 7 is a perspective view of the interior of the outer cylinder according to the present invention;

FIG. 8 is a front view of the inner part of the outer cylinder according to the present invention;

FIG. 9 is a schematic perspective view of the pre-grinding apparatus and the ball mill according to the present invention;

reference numerals: 1. an outer cylinder; 2. a feed hopper; 3. a discharging pipe; 4. a first motor; 41. a first rotating shaft; 42. a first sleeve; 43. a linkage arm; 44. a first fixing frame; 5. a second motor; 51. a second rotating shaft; 52. a second sleeve; 53. a second fixing frame; 6. an inner cylinder; 61. a circular ring vertical plate; 611. a first screen aperture; 612. a conical top; 62. an annular groove; 63. a second screen aperture; 7. a rotating frame; 71. a mounting frame; 72. a connecting rod; 73. rolling; 8. rotating the rod; 81. an elastic member; 9. a delivery pipe; 91. clamping a hoop; 10. a ball mill; 101. a feeding pipe of the ball mill; 102. ball mill motor.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all directional indicators (such as up, down, left, right, front, and back) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly. Furthermore, the terms "mounted," "disposed," "provided," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

Example 1

Referring to fig. 1, a pre-grinding device suitable for ball mill, including outer cylinder 1, be equipped with feeder hopper 2 on outer cylinder 1 top, be equipped with unloading pipe 3 in outer cylinder 1 bottom, feeder hopper 2 and unloading pipe 3 all communicate with outer cylinder 1, at outer cylinder 1 outer wall fixedly connected with first mount 44, fixedly connected with first sleeve 42 on first mount 44, the lower extreme of first sleeve 42 runs through outer cylinder 1 top and extends to the inside of outer cylinder 1, rotate the cover at first sleeve 42 inboard and establish first pivot 41, the length of first pivot 41 is greater than the length of first sleeve 42, make the upper end and the lower extreme of first pivot 41 all extend to first sleeve 42 outsidely, the upper end fixedly connected with first motor 4's of first pivot 41 output shaft, still be equipped with between first motor 4 and the first mount 44 (not drawn in the drawing), make to be fixed connection between first motor 4 and the first mount 44 through the mounting bracket, thereby can improve first motor 4's stability, first motor 4 adopts inverter motor, make when first motor 4 moves, thereby the rotational speed of first motor 4 can take place the periodic change, thereby can make the rotational speed change along with the barrel when rotating.

Referring to fig. 2-5, a linkage arm 43 is fixedly connected to the lower end of the first rotating shaft 41, a second motor 5 is movably connected to the lower end of the linkage arm 43 and a side of the linkage arm 43 away from the first rotating shaft 41, so that the second motor 5 can rotate along the lower end of the linkage arm 43 in multiple angles, a second rotating shaft 51 is fixedly connected to an output shaft of the second motor 5, a second sleeve 52 is rotatably sleeved on the outer side of the second rotating shaft 51, the length of the second rotating shaft 51 is greater than that of the second sleeve 52, so that the upper end and the lower end of the second rotating shaft 51 both extend to the outside of the second sleeve 52, a second fixing frame 53 is fixedly connected to the middle circumferential surface of the second sleeve 52, an inner cylinder 6 is rotatably connected to the second fixing frame 53, the second fixing frame 53 is rotatably connected to the outer wall of the inner cylinder 6, an annular groove 62 is formed at the top end of the inner cylinder 6, the lower end of the second sleeve 52 penetrates through the top end of the inner cylinder 6 and extends to the inside of the inner cylinder 6, the second sleeve 52 is fixedly connected with the top end of the outer cylinder 6, a plurality of rotating frames 7 are fixedly connected on the circumferential surface of the lower end of the first rotating shaft 51, mounting frames 71 are fixedly connected with the lower ends of the plurality of rotating frames 7, connecting rods 72 are fixedly connected between the inner side walls of the mounting frames 71, grinding rollers 73 are rotatably sleeved on the outer sides of the connecting rods 72, a circular vertical plate 61 is fixedly connected in the middle of the inner bottom wall of the inner cylinder 6, the circle center of the circular vertical plate 61 and the circle center of the bottom end of the inner cylinder 6 are on the same vertical line, a plurality of first screening holes 611 are formed in the side end of the circular vertical plate 61, a plurality of second screening holes 63 are formed in the bottom end of the inner cylinder 6 and positioned inside the circular vertical plate 61, the size of the first screening holes 611 is larger than that of the second screening holes 63, materials can be secondarily screened through the arranged first screening holes 611 and the second screening holes 63, so that the particles of the materials entering the ball mill are smaller, help improving the ball-milling efficiency of ball mill, also can reduce the damage that the material caused to the collision of ball mill inner wall when the ball-milling simultaneously, there is circular cone top 612 at circular ring riser 61 top swing joint, circular cone top 612 is detachable swing joint on circular ring riser 61 top, convenient follow-up can dismantle circular cone top 612, thereby can dredge the clearance to first sieve material hole 611 and second sieve material hole 63, above-mentioned roller 73 all imbeds in the spout of being built by 6 inner walls of outer barrel and circular ring riser 61, make roller 73 can be along the spout of building reciprocating circular motion.

Referring to fig. 6, an elastic member 81 is movably connected to the center of the outer bottom wall of the inner cylinder 6, the upper end of the elastic member 81 can rotate along the outer bottom wall of the inner cylinder 6 at multiple angles, a rotating rod 8 is fixedly connected to the lower end of the elastic member 81, and the lower end of the rotating rod 8 is movably connected to the center of the inner bottom wall of the outer cylinder 1, so that the lower end of the rotating rod 8 can rotate along the inner bottom wall of the outer cylinder 1 at multiple angles, and the rotating rod 8 is arranged in an inclined manner, because the first motor 4 adopts a variable frequency motor, the rotating speed of the inner cylinder 6 can change periodically during rotation, and because the outer wall of the inner cylinder 6 is rotatably connected with the second fixing frame 53, when the inner cylinder 6 rotates, the rotating rod 8 and the elastic member 81 are matched, so that the inner cylinder 6 can shake in a reciprocating manner.

Referring to fig. 7, hopper 2 lower extreme intercommunication has conveying pipeline 9 under, conveying pipeline 9 adopts elastic material, make conveying pipeline 9 have fine elasticity, it is equipped with clamp 91 to rotate the cover in the conveying pipeline 9 lower extreme outside, clamp 91 rotates with the lateral wall of ring channel 62 to be connected, conveying pipeline 9 lower extreme passes clamp 91 and extends to inside barrel 6, because clamp 91 rotates with the lateral wall of ring channel 62 to be connected, and conveying pipeline 9 has fine elasticity, consequently, when interior barrel 6 is rotating the in-process, the lower extreme of conveying pipeline 9 can be present inside barrel 6 all the time, can not break away from in barrel 6 in following.

Referring to fig. 8, the second motor 5 is disposed to be inclined toward a side away from the first rotating shaft 41, the lower end of the rotating lever 8 is disposed to be inclined toward a side close to the first rotating shaft 41, and the inclination angle of the second motor 5 is smaller than that of the rotating lever 8.

Referring to fig. 9, the ball mill with the pre-grinding device comprises a ball mill 10, wherein a ball mill feeding pipe 101 is arranged on the ball mill 10, the ball mill feeding pipe 101 is communicated with a discharging pipe 3, and a ball mill motor 102 is further arranged on one side of the ball mill 10.

The working principle is as follows:

materials with larger sizes are added into the inner cylinder 6 through the feed hopper 2, the second motor 5 is started, the driving rotating frame 7 can rotate, so that the materials can be rolled to form small particles, meanwhile, the first motor 4 is started, and the first motor 4 is a variable frequency motor, so that the inner cylinder 6 can shake in a reciprocating mode in the rotating process on the matching line of the elastic part 81, so that the materials rolled by the rolling roller 73 enter the annular vertical plate 61 through the first material drying hole 611, and the materials collide with the inner wall of the annular vertical plate 61 in the reciprocating shaking process of the inner cylinder 6, so that the materials agglomerated after rolling can be broken into independent dispersions, enter the bottom of the outer cylinder 1 through the second material screening hole 63, and then enter the ball mill through the discharging pipe 3; through the pre-grinding device, the material entering the ball mill is a dispersion of small particles, so that the ball milling efficiency of the ball mill can be effectively improved, and the collision of the material on the inner wall of the ball mill is reduced.

Example 2

In order to make the material enter into annular riser 61 through first sieve material hole 611 after, can not rethread first sieve material hole 611 run into outside annular riser 61, the round platform form can be established into to first sieve material hole 611, the aperture of one end is great, the aperture of one end is less, wherein, the round hole diameter that is located on annular riser 61 inner wall is less, the round hole diameter that is located on the annular riser outer wall is great, after the material enters into annular riser 61 along first sieve material hole 611, because the round hole diameter that is located on annular riser 61 inner wall is less, make the material be difficult to run into outside annular riser 61 through first sieve material hole 611, thereby make the material that enters into in annular riser 61 can exist in annular riser 61 for a long time.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a pre-grinding device suitable for ball mill, wherein pre-grinding device sets up ball mill inlet pipe entrance for the ball mill to including constituting for fixed outer barrel and rotatory interior barrel, the outer diapire of interior barrel with the interior diapire of outer barrel passes through the dwang and connects, its characterized in that, be equipped with first motor on the outer barrel, first motor output shaft has first pivot, first pivot lower extreme is connected with the linkage arm, the linkage arm lower extreme is connected with the second motor, interior barrel is in first motor operation is passed through the linkage arm drives and is reciprocating rotation, the interior diapire of interior barrel is connected with the ring riser, a plurality of first sieve material holes have been seted up to ring riser lateral wall, interior barrel bottom just is located the inside a plurality of second sieve material holes that have still been seted up of ring riser interior barrel inner wall with it has a plurality of rollers to imbed between the ring riser outer wall, a plurality of the roller is in the second motor operation is inside reciprocating circular motion including the barrel.

2. The pre-grinding device for the ball mill as claimed in claim 1, wherein the top end of the outer cylinder is provided with a feed hopper, and the bottom end of the outer cylinder is further provided with a discharge pipe.

3. A pre-grinding apparatus for a ball mill according to claim 1, wherein said first motor is a variable frequency motor.

4. The pre-grinding device suitable for the ball mill as claimed in claim 1, wherein the second motor output shaft is fixedly connected with a second rotating shaft, a second sleeve is sleeved on the outer side of the second rotating shaft in a rotating manner, the lower end of the second sleeve penetrates through the top end of the inner cylinder and extends into the inner cylinder, the second sleeve is fixedly connected with the top end of the inner cylinder, a second fixing frame is fixedly connected with the circumferential surface of the second sleeve, the second fixing frame is rotatably connected with the outer wall of the inner cylinder, a plurality of rotating frames are fixedly connected with the circumferential surface of the lower end of the second rotating shaft, a plurality of mounting frames are fixedly connected with the lower ends of the rotating frames, a connecting rod is fixedly connected between the inner side walls of the mounting frames, and a grinding roller is sleeved on the outer side of the connecting rod in a rotating manner.

5. The pre-grinding device of claim 2, wherein the feed hopper has a lower end connected to a feed pipe, the feed pipe is made of elastic material, an annular groove is formed at the top end of the inner cylinder, a collar is rotatably sleeved on the outer side of the lower end of the feed pipe, the collar is rotatably connected to the side wall of the annular groove, and the lower end of the feed pipe passes through the collar and extends into the inner cylinder.

6. The pre-grinding apparatus for a ball mill according to claim 1, wherein an elastic member is further disposed between the outer bottom wall of the inner cylinder and the rotating rod.

7. The pre-grinding apparatus for a ball mill according to claim 6, wherein the lower end of the rotating rod is disposed to be inclined toward a side close to the first rotating shaft, the second motor is disposed to be inclined toward a side away from the first rotating shaft, and an inclination angle of the second motor is smaller than that of the rotating rod.

8. The pre-milling apparatus adapted for use in a ball mill according to claim 1, wherein the first screen openings are of a larger size than the second screen openings.

9. The pre-grinding device suitable for the ball mill according to claim 1, wherein the first screening holes are circular truncated cone-shaped holes, one end has a large hole diameter, the other end has a small hole diameter, the diameter of the circular hole on the inner wall of the circular ring vertical plate is small, and the diameter of the circular hole on the outer wall of the circular ring vertical plate is large.

10. A ball mill using the pre-grinding apparatus of claim 2, wherein the ball mill includes a ball mill feeding pipe, the ball mill feeding pipe is communicated with the discharging pipe, and a ball mill motor is further provided at one side of the ball mill.