Separation and recovery device for broken small steel balls of ball mill

Abstract

The utility model belongs to the technical field of ball mills, and particularly relates to a ball mill broken small steel ball separation and recovery device which comprises a ball mill barrel, a frequency converter, an electromagnetic force bar and a belt conveyor. The frequency converter is electrically connected with the electromagnetic force bar, the belt conveyor is located below the electromagnetic force bar, and one end of the electromagnetic force bar and one end of the belt conveyor extend into the ball mill cylinder; a treatment box is arranged below the other end of the drainage groove, a partition plate is arranged in the treatment box and divides the treatment box into a first collection cavity and a second collection cavity, and a screening net plate is arranged on the first collection cavity; the intensity of the magnetic field of the electromagnetic force bar is changed by adjusting the current of the frequency converter, the magnetic field intensity of the electromagnetic force bar is controlled, small broken steel balls with small mass are adsorbed to the screw rod part and conveyed out of the ball mill barrel through the belt conveyor, operation is easy, use is convenient, the separation effect is good, and the labor intensity of workers is greatly relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of ball mills, in particular to a separation and recovery device for crushed small steel balls of a ball mill. Background Art

[0002] The ball mill is an ore grinding system and the core equipment of a mineral processing plant. The ball mill uses a rotating drum to drive the grinding medium (steel balls) in the drum to impact, squeeze and grind the raw ore, and finally grind the ore to a particle size that can be selected. The steel balls in the ball mill are the main medium in the grinding process. The steel balls are constantly worn during the grinding process. When the diameter reaches a certain value, they basically lose their grinding function and become power-consuming components. If they are not removed in time, it will cause useless power consumption. The worn steel balls will also seriously reduce the grinding efficiency. If they are not removed in time, the unit processing capacity of the ball mill will be reduced, and even the ore grinding particle size will not meet the selection requirements. Moreover, when the ball mill grinds materials, the worn or broken steel balls will be sent out from the discharge port together with the materials and mixed into the raw materials, affecting the quality of the raw materials. At the same time, it is easy to cause the impeller and valve of the sand pump in the mineral processing equipment to be blocked.

[0003] At present, the treatment of broken small steel balls inside the ball mill is mainly to use the time of stopping for maintenance and replacing the liner, open the manhole door to pour all the steel balls out of the ground, or the operators manually screen and bag the steel balls that do not meet the requirements in the ball mill cylinder. This operation method has high labor intensity, long operation time, low work efficiency, poor working environment, and certain safety risks. Therefore, a new type of ball mill broken small steel ball separation device is urgently needed to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a ball mill crushed small steel ball separation and recovery device, which is simple to operate, easy to use and has good separation effect.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a ball mill crushed small steel ball separation and recovery device, comprising a ball mill cylinder, and also comprising a frequency converter, an electromagnetic force rod and a belt conveyor; the frequency converter is electrically connected to the electromagnetic force rod, the belt conveyor is located below the electromagnetic force rod, and one end of the electromagnetic force rod and the belt conveyor extends into the ball mill cylinder.

[0006] Furthermore, the electromagnetic force rod is composed of a straight rod portion and a spiral rod portion, and the spiral rod portion is located in the ball mill cylinder, and the spiral rod portion increases the contact area with the steel balls in the ball mill cylinder.

[0007] Preferably, it also includes a drainage trough and a processing box arranged below the drainage trough, the drainage trough is arranged at the other end of the belt conveyor, and a partition plate is vertically arranged in the processing box, and the partition plate divides the processing box into a first collecting chamber and a second collecting chamber. A screening mesh plate is arranged on the first collecting chamber, which can effectively classify the broken small steel balls.

[0008] Preferably, a bracket is provided at the bottom end of the frequency converter, a fixing seat is provided on the bracket, and the electromagnetic force rod is arranged on the bracket through the fixing seat, so that the electromagnetic force rod can be fixed and fixed at a certain height to facilitate entering the ball mill cylinder.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0010] The utility model changes the strength of the magnetic field of the electromagnetic force rod by adjusting the size of the inverter current, controls the strength of the magnetic field of the electromagnetic force rod, adsorbs small steel balls with small mass on the spiral rod, and transports the small steel balls out of the ball mill cylinder through a belt conveyor. The operation is simple, the use is convenient, the separation effect is good, and the labor intensity of the staff is greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model.

[0012] In the figure: 1. ball mill cylinder; 2. frequency converter; 3. electromagnetic force rod; 4. belt conveyor; 5. straight rod; 6. spiral rod; 7. drainage trough; 8. processing box; 9. partition plate; 10. first collecting chamber; 11. second collecting chamber; 12. screening mesh plate; 13. bracket; 14. fixing seat. DETAILED DESCRIPTION

[0013] See also Figure 1 A ball mill crushed small steel ball separation and recovery device comprises a ball mill cylinder 1, a frequency converter 2, an electromagnetic force rod 3 and a belt conveyor 4; the frequency converter 2 is electrically connected to the electromagnetic force rod 3, the belt conveyor 4 is located below the electromagnetic force rod 3, and one end of the electromagnetic force rod 3 and the belt conveyor 4 extends into the ball mill cylinder 1;

[0014] The electromagnetic force rod 3 is composed of a straight rod portion 5 and a spiral rod portion 6, and the spiral rod portion 6 is located in the ball mill cylinder 1;

[0015] It also includes a drainage trough 7 and a processing box 8 arranged below the drainage trough 7. The drainage trough 7 is arranged at the other end of the belt conveyor 4. A partition plate 9 is vertically arranged in the processing box 8. The partition plate 9 divides the processing box 8 into a first collecting chamber 10 and a second collecting chamber 11. A screening mesh plate 12 is arranged on the first collecting chamber 10.

[0016] A bracket 13 is provided at the bottom end of the frequency converter 2 , a fixing seat 14 is provided on the bracket 13 , and the electromagnetic force rod 3 is arranged on the bracket 13 through the fixing seat 14 .

[0017] The specific working process of the utility model is:

[0018] During the overhaul, the ball mill is stopped, and the electromagnetic force rod 3 and one end of the belt conveyor 4 are extended to the inside of the ball mill cylinder 1. The manual turntable is rotated, and the ball mill cylinder 1 rotates slowly, and the internal steel balls rotate accordingly; the inverter 2 is powered on, and the electromagnetic force rod 3 generates magnetism. The strength of the magnetic field of the electromagnetic force rod 3 is changed by adjusting the current of the inverter 2 to control the magnetic field strength of the electromagnetic force rod 3. When the ball mill cylinder 1 rotates, the small steel balls with small mass are adsorbed on the spiral rod 6 (the steel balls with large mass and meeting the requirements of the grinding medium are not adsorbed and are used normally). When a certain amount is reached, the power is disconnected, and the magnetic field of the spiral rod 6 The field disappears, and the broken steel balls also fall onto the belt. The motor on the belt conveyor 4 is started, and the belt conveyor 4 runs. The broken steel balls are transported out of the ball mill cylinder 1, and the transported broken steel balls flow into the screening mesh plate 12 along the drainage groove 7. The screening mesh plate 12 can effectively classify the broken steel balls. The steel balls smaller than the sieve holes fall into the first collecting chamber 10, and the steel balls larger than the sieve holes roll into the second collecting chamber 11. When the steel balls that meet the grinding requirements flow out, the second collecting chamber 11 can collect the steel balls that meet the grinding requirements. Finally, the steel balls in the first collecting chamber 10 are transported and processed at the later stage, and then smelted and processed again.

[0019] The spiral rod portion 6 of the utility model is spiral-shaped, which increases the contact area with the steel balls in the ball mill cylinder 1. The straight rod portion 5 can be manually pulled and extended to move the spiral rod portion 6 into the ball mill cylinder 1. The utility model can install the inverter 2 and the fixing seat 14 on the bracket 13 through the bracket 13, so that the electromagnetic force rod 3 is fixed at a certain height, and the electromagnetic force rod 3 can be extended into the ball mill cylinder 1 to avoid contact with the ball mill cylinder 1. The fixing seat 14 is made of insulating material.

[0020] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A ball mill crushed small steel ball separation and recovery device, comprising a ball mill cylinder (1), characterized in that: It also includes a frequency converter (2), an electromagnetic force rod (3) and a belt conveyor (4); the frequency converter (2) is electrically connected to the electromagnetic force rod (3), the belt conveyor (4) is located below the electromagnetic force rod (3), and one end of the electromagnetic force rod (3) and the belt conveyor (4) extends into the ball mill barrel (1).

2. The device for separating and recovering broken steel balls from a ball mill according to claim 1, characterized in that: The electromagnetic force rod (3) is composed of a straight rod portion (5) and a spiral rod portion (6), and the spiral rod portion (6) is located inside the ball mill barrel (1).

3. The device for separating and recovering broken steel balls from a ball mill according to claim 1, characterized in that: It also comprises a drainage trough (7) and a processing box (8) arranged below the drainage trough (7); the drainage trough (7) is arranged at the other end of the belt conveyor (4); a partition plate (9) is vertically arranged in the processing box (8); the partition plate (9) divides the processing box (8) into a first collecting chamber (10) and a second collecting chamber (11); and a screening mesh plate (12) is arranged on the first collecting chamber (10).

4. The device for separating and recovering broken small steel balls from a ball mill according to claim 1, characterized in that: A bracket (13) is provided at the bottom end of the frequency converter (2), a fixing seat (14) is provided on the bracket (13), and the electromagnetic force rod (3) is arranged on the bracket (13) via the fixing seat (14).

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