CN210411105U

CN210411105U - Self-returning ore grinding device

Info

Publication number: CN210411105U
Application number: CN201920169543.4U
Authority: CN
Inventors: 林顺芝; 谯良; 汪庭峰; 张凤霞
Original assignee: Panzhihua Dongli Phosphorus Products Co ltd
Current assignee: Panzhihua Dongli Phosphorus Products Co ltd
Priority date: 2019-01-31
Filing date: 2019-01-31
Publication date: 2020-04-28
Anticipated expiration: 2029-01-31

Abstract

The utility model discloses a from returning charge ore grinding device relates to wet process ore grinding device field, provides one kind and can sieve the ball-milling back material and return the material to the ore grinding device of ball-milling once more. The self-returning ore grinding device comprises a ball mill main body with a material output port; the device also comprises a filtering and returning device; the filtering and returning device comprises a filtering screen cylinder, a returning spiral, a returning chute and a bracket; the filtering screen cylinder comprises a screen cylinder main body, a screen cylinder near end plate and a screen cylinder far end plate, the filtering screen cylinder and the ball mill main body are coaxially arranged and connected, the material output port is communicated with the filtering screen cylinder, and the filtering screen cylinder is provided with filtering holes; the material returning spiral is positioned in the filtering screen cylinder and connected with the filtering screen cylinder, and the conveying direction of the material returning spiral is opposite to the conveying direction of the ball mill main body; the support comprises a cylindrical support connector coaxially arranged with the filtering screen drum, and a far-end plate of the screen drum is sleeved on the support connector; the material returning chute is connected with the bracket connecting body and obliquely and downwardly extends into the ball mill main body.

Description

Self-returning ore grinding device

Technical Field

The utility model relates to a wet process ore grinding device field especially relates to a grind ore device from returning charge.

Background

Wet ball mills are common wet grinding devices. When the wet ball mill works, materials are ball-milled by the ball mill main body and then are output through the material output port. The materials milled by the wet ball mill have uneven thickness, so the coarse materials are required to be returned to the wet ball mill for ball milling again. At present, the conventional coarse material returning mode is that the coarse material needs to be manually connected or a plurality of belts are externally connected to return the coarse material after being sieved. The manual coarse material returning increases the labor intensity of workers undoubtedly, and the working efficiency is low. The material returning device for returning the plurality of belts has a complex structure, large occupied area and large energy consumption.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: provides an ore grinding device which can screen the materials after ball milling and return the materials to the ball milling again.

The technical scheme adopted for solving the problems is as follows: the self-returning ore grinding device comprises a ball mill main body with a material output port; the device also comprises a filtering and returning device; the filtering and returning device comprises a filtering screen cylinder, a returning spiral, a returning chute and a bracket; the filtering screen cylinder comprises a screen cylinder main body, a screen cylinder near end plate and a screen cylinder far end plate, the filtering screen cylinder and the ball mill main body are coaxially arranged and connected, the material output port is communicated with the filtering screen cylinder, and the filtering screen cylinder is provided with filtering holes; the material returning spiral is positioned in the filtering screen cylinder and connected with the filtering screen cylinder, and the conveying direction of the material returning spiral is opposite to the conveying direction of the ball mill main body; the support comprises a cylindrical support connector which is coaxial with the filtering screen drum, and the far end plate of the screen drum is sleeved on the support connector and a seal is arranged between the support connector and the support connector; the material returning chute is connected with the bracket connecting body and obliquely and downwardly extends into the ball mill main body.

Further, the method comprises the following steps: the filtering material returning device comprises a supporting rod, and the supporting rod is connected with the support connector and supports the material returning chute.

Further, the method comprises the following steps: the filtering and returning device comprises a flushing device, the flushing device comprises a flushing main pipe and a plurality of flushing branch pipes, the flushing main pipe enters a filtering screen cylinder through a support connector outside the filtering screen cylinder, the flushing branch pipes are located in the filtering screen cylinder and arranged along the length direction of the filtering screen cylinder at intervals, the flushing branch pipes are connected with the flushing main pipe, and water outlets of the flushing branch pipes face a screen cylinder main body.

Further, the method comprises the following steps: the main flushing pipe is connected with the supporting rod, and the branch flushing pipe is connected to the side face of the material returning chute.

The utility model has the advantages that: the material ball-milling back is exported in filtering the returning charge device through the material delivery outlet, and the ball mill main part drives when realizing the ball-milling and filters the returning charge device (remove the support) and rotate. In the filtering and returning device, fine materials leak out through the filtering holes, and coarse materials are left in the filtering screen drum; the material returning spiral rotation not only enables the coarse materials to move to the ball mill body, but also enables the coarse materials to be lifted; the coarse materials fall into a material returning chute after being lifted, and flow back to the ball mill body along the material returning chute for ball milling again. Therefore, the utility model has the effects of filtering the ball-milled materials and returning the coarse materials to the ball mill for ball milling again; and the structure is simple, and no extra power is needed.

Drawings

FIG. 1 is a schematic structural diagram of a self-returning ore grinding device;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a schematic structural diagram of a self-returning ore grinding device and its associated equipment;

labeled as: the material output port 1, the ball mill main body 11, the filtering material returning device 2, the filtering screen drum 21, the screen drum main body 211, the screen drum near end plate 212, the screen drum far end plate 213, the filtering hole 214, the material returning spiral 22, the material returning chute 23, the support 24, the support connecting body 241, the flushing device 25, the flushing main pipe 251, the flushing branch pipe 252, the supporting rod 26, the material collecting tank 3 and the material stirring tank 4.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

As shown in fig. 1 and 2: the self-returning ore grinding device comprises a ball mill main body 11 with a material output port 1; the device also comprises a filtering and returning device 2; the filtering and returning device 2 comprises a filtering screen drum 21, a returning spiral 22, a returning chute 23 and a bracket 24; the filtering screen cylinder 21 comprises a screen cylinder main body 211, a screen cylinder near end plate 212 and a screen cylinder far end plate 213, the filtering screen cylinder 21 and the ball mill main body 11 are coaxially arranged and connected, the material output port 1 is communicated with the filtering screen cylinder 21, and the filtering screen cylinder 21 is provided with filtering holes 214; the material returning screw 22 is positioned in the filtering screen cylinder 21 and connected with the filtering screen cylinder 21, and the conveying direction of the material returning screw 22 is opposite to the conveying direction of the ball mill main body 11; the support 24 comprises a cylindrical support connecting body 241 coaxially arranged with the filtering screen drum 21, and the screen drum far end plate 213 is sleeved on the support connecting body 241 and is sealed between the support connecting body 241 and the support connecting body 241; the return chute 23 is connected to the support connection body 241 and extends obliquely downward into the ball mill main body 11.

After the materials are ball-milled, the materials are output to the filtering and returning device 2 through the material output port 11, and the ball mill body 1 drives the filtering and returning device 2 (except the bracket 24) to rotate while realizing ball milling. In the filtering and returning device 2, fine materials leak out through the filtering holes 214, and coarse materials are left in the filtering screen drum 21; the material returning screw 22 rotates to move the coarse material to the ball mill body 1 and lift the coarse material; the coarse materials fall into the material returning chute 23 after being lifted up, and flow back to the ball mill body 1 along the material returning chute 23 for ball milling again.

The carriage 24 does not rotate. The support 24 functions to support the filtering screen drum 21 and prevent the filtering screen drum 21 from becoming a cantilever beam, and the support 24 also functions to connect a non-rotating structure (such as the material returning chute 23) in the filtering screen drum 21. A seal is provided between the distal plate 213 of the screen cylinder and the frame 24 to prevent material from escaping.

The returning charge chute 23 length is longer, and structural strength is relatively poor, and in order to improve the intensity of returning charge chute 23, filter returning charge device 2 includes bracing piece 26, bracing piece 26 and support connector 241 and support returning charge chute 23.

Wet materials are easily adhered to the filtering screen drum 21 and the material returning screw 22, so that the filtering holes 214 are blocked, and normal conveying and material lifting of the material returning screw 22 are affected. For this reason, the filtering and returning device 2 comprises a flushing device 25, the flushing device 25 comprises a flushing main pipe 251 and a plurality of flushing branch pipes 252, the flushing main pipe 251 enters the filtering screen drum 21 from the outside of the filtering screen drum 21 through a support connecting body 241, each flushing branch pipe 252 is located in the filtering screen drum 21 and is arranged at intervals along the length direction of the filtering screen drum 21, the flushing branch pipes 252 are connected with the flushing main pipe 251, and the water outlets of the flushing branch pipes 252 face the screen drum main body 211.

The washing water enters the washing branch pipe 252 through the washing main pipe 251 and is sprayed to the screen drum main body 211, so that the washing effect of avoiding a large amount of adhesion of materials is achieved. The plurality of flushing branch pipes 252 are arranged at intervals along the length direction of the filtering screen drum 21 and are used for ensuring that the filtering screen drum 21 and the return material spiral 22 can be flushed in the whole length direction; while the rotation of the filter screen cylinder 21 ensures that the entire circumferential direction of the filter screen cylinder 21 and the return screw 22 can be flushed.

The flushing device 25 can be fixed in the following way: the main flushing pipe 251 is connected to the support bar 26, and the branch flushing pipe 252 is connected to the side of the return chute 23.

The utility model discloses the material that spills through filtration pore 214 obviously need be collected, consequently the utility model discloses corresponding supporting device is as shown in fig. 3, filters returning charge device 2 and sets up material collecting tank 3 under, during the wet ball-milling, the ore pulp during the material, in order to avoid the ore pulp to precipitate, still should set up material agitator tank 4.

Claims

1. The self-returning ore grinding device comprises a ball mill main body (11) with a material output port (1); the method is characterized in that: comprises a filtering and returning device (2); the filtering and returning device (2) comprises a filtering screen cylinder (21), a returning spiral (22), a returning chute (23) and a bracket (24); the filtering screen cylinder (21) comprises a screen cylinder main body (211), a screen cylinder near end plate (212) and a screen cylinder far end plate (213), the filtering screen cylinder (21) is coaxially arranged and connected with the ball mill main body (11), the material output port (1) is communicated with the filtering screen cylinder (21), and the filtering screen cylinder (21) is provided with filtering holes (214); the return material screw (22) is positioned in the filtering screen cylinder (21) and connected with the filtering screen cylinder (21), and the conveying direction of the return material screw (22) is opposite to the conveying direction of the ball mill main body (11); the support (24) comprises a cylindrical support connecting body (241) which is coaxial with the filtering screen drum (21), and a screen drum far end plate (213) is sleeved on the support connecting body (241) and is sealed between the support connecting body and the support connecting body; the material returning chute (23) is connected with the support connecting body (241) and extends downwards into the ball mill main body (11) in an inclined mode.

2. The self-returning ore grinding device according to claim 1, wherein: the filtering material returning device (2) comprises a support rod (26), and the support rod (26) is connected with a support connecting body (241) and supports the material returning chute (23).

3. The self-returning ore grinding device according to claim 2, wherein: filter returning charge device (2) including washing unit (25), washing unit (25) are responsible for (251) and a plurality of washing branch pipe (252) including washing, wash and be responsible for (251) and enter into in filtering sieve section of thick bamboo (21) through support connector (241) from filtering sieve section of thick bamboo (21) outward, each washes branch pipe (252) and is located filtering sieve section of thick bamboo (21) and along filtering sieve section of thick bamboo (21) length direction interval setting, wash branch pipe (252) and wash and be responsible for (251) and be connected, wash the delivery port of branch pipe (252) towards sieve section of thick bamboo main part (211).

4. The self-returning ore grinding device according to claim 3, wherein: the main flushing pipe (251) is connected with the supporting rod (26), and the branch flushing pipe (252) is connected to the side surface of the material returning chute (23).