CN-117861788-B - Method for starting ball mill in low electric quantity

CN117861788BCN 117861788 BCN117861788 BCN 117861788BCN-117861788-B

Abstract

The invention provides a method for starting a ball mill in a low electric quantity, which comprises the following steps of turning off an electric appliance irrelevant to test run, starting a hydraulic system to enable lubricating oil to enter a journal position of the ball mill to form an oil film, enabling a ball mill cylinder body to be in a suspension state above the oil film and to be static for a certain time, marking the lowest point position of the end face of the ball mill after the ball mill is static for a certain time, turning the ball mill cylinder body, and placing a wood plate between teeth of a large gear on the cylinder body and the ground after the cylinder body rotates for a certain angle.

Inventors

Lv Dewei
ZHAO LONG
FENG BOWEN
QIAN FENG
CHEN TAO
CHEN YANHONG

Assignees

中实洛阳重型机械有限公司
中实洛阳重工有限公司

Dates

Publication Date: 20260505
Application Date: 20240125

Claims (1)

1. A method for low-power starting of a ball mill, comprising the steps of: Step one, closing an electrical appliance irrelevant to test run; Starting a hydraulic system to enable lubricating oil to enter the journal position of the ball mill to form an oil film, so that the ball mill cylinder is in a suspension state above the oil film and is stationary for a certain time; Thirdly, after the ball mill is stationary for a certain time, marking the lowest point position of the end face of the ball mill; step four, rotating the ball mill cylinder, after the cylinder rotates by a certain angle, placing a wood plate between teeth of a large gear on the cylinder and the ground, and using the wood plate as a supporting piece to enable the cylinder to be static under the angle; And fifthly, starting the pneumatic clutch of the main motor to enable the pneumatic clutch to hold the pinion for rotation, simultaneously, pulling out the support wood board in the fourth step, and enabling the main motor to drive the pneumatic clutch to hold the pinion for rotation while the cylinder rotates, so that the ball mill is started under the condition of small current load.

Description

Method for starting ball mill in low electric quantity Technical Field The invention belongs to the technical field of ball mills, and particularly relates to a method for starting a ball mill in a low electric quantity. Background The ball mill is a key device for crushing materials after the materials are crushed. The ball mill consists of horizontal cylinder, hollow feeding and discharging shaft, grinding head, etc. the cylinder is long cylinder made of steel plate, steel lining board is fixed to the cylinder, and steel balls in certain amount are installed inside the cylinder and the cylinder is installed in different diameters and in certain proportion. The material is selected according to the granularity of the ground material, the material is filled into the cylinder body by the hollow shaft at the feeding end of the ball mill, when the ball mill cylinder body rotates, the grinding body is attached to the cylinder liner plate and taken away by the cylinder body under the action of inertia and centrifugal force, and when the ball mill cylinder body is taken to a certain height, the ground material in the cylinder body is thrown down under the action of gravity of the grinding body, and the fallen grinding body breaks up the material in the cylinder body like a projectile. At present, most occasions are provided with power distribution stations matched with the ball mill, but in some special occasions, such as near mines, the power distribution stations cannot be built because high-voltage electricity is not timely led to the scene, so that the problem that tripping and power failure are caused when the ball mill is started during test after the ball mill is installed in place is caused, and the ball mill cannot be started normally is caused. Disclosure of Invention In order to solve the technical problems, the invention provides a method for starting the ball mill with low electric quantity, which is characterized in that after the gravity center of the ball mill is offset by a certain angle, the cylinder body is rotated under the action of gravity and inertia force, and the main motor is matched to drive the pneumatic clutch to drive the pinion to rotate at the same time, so that the effect that the main motor drives the cylinder body to rotate is finally realized, the test rotation work of the ball mill is realized under the condition of small current load, and the tripping and power failure problem is avoided. The technical scheme adopted by the invention is that the method for starting the ball mill in low electric quantity comprises the following steps: Step one, closing an electrical appliance irrelevant to test run; Starting a hydraulic system to enable lubricating oil to enter the journal position of the ball mill to form an oil film, so that the ball mill cylinder is in a suspension state above the oil film and is stationary for a certain time; Thirdly, after the ball mill is stationary for a certain time, marking the lowest point position of the end face of the ball mill; Step four, rotating the ball mill cylinder, after the cylinder rotates by a certain angle, placing a wood plate between teeth of a large gear on the cylinder and the ground, and using the wood plate as a supporting piece to enable the cylinder to be stationary under the angle; And fifthly, starting the pneumatic clutch of the main motor to enable the pneumatic clutch to hold the pinion for rotation, simultaneously, pulling out the support wood board in the fourth step, and enabling the main motor to drive the pneumatic clutch to hold the pinion for rotation while the cylinder rotates, so that the ball mill is started under the condition of small current load. In the fourth step, the crown block is used as a power source to drive the ball mill cylinder to rotate, and the rotation direction of the cylinder is the opposite direction of the normal working rotation direction of the cylinder. In the fourth step, the rotation angle of the cylinder body relative to the static state of the third step is 170-175 degrees. The beneficial effects of the invention are as follows: After the gravity center of the ball mill is offset by a certain angle, the cylinder body is enabled to rotate under the action of gravity and inertia force, the main motor is matched at the same time to drive the pneumatic clutch to drive the pinion to rotate, then the effect that the main motor drives the cylinder body to rotate is finally achieved, the trial rotation work of the ball mill is achieved under the condition of small current load, and the problem of tripping and power failure is avoided. Drawings FIG. 1 is a perspective view of a ball mill according to the present invention; FIG. 2 is a schematic view of the bowl mill cartridge of the present invention in a suspended stationary state; FIG. 3 is a schematic view of the ball mill bowl of the present invention rotated a certain angle and supported by a wood plate. The drawing is marked with 1, a cyl