Steel ball magnetic separation screening equipment of ball mill

Abstract

The invention discloses magnetic separation screening equipment for steel balls of a ball mill. The magnetic separation screening equipment comprises a screening box, an upper-layer screening frame, a lower-layer screening frame, a magnetic separation screening mechanism and a vibration exciter, the upper-layer screening frame and the lower-layer screening frame are obliquely arranged in the screening box from top to bottom; a steel ball inlet is formed in the higher end, corresponding to the upper-layer screening frame, of the screening box. A first collecting tank is arranged at the lower end of the upper-layer screening frame, and a first screening outlet is formed in one side of the first collecting tank; a second collecting tank is arranged at the lower end of the lower-layer screening frame, and a second screening outlet is formed in one side of the second collecting tank; a discharging channel communicated with the lower layer is arranged behind the second collecting tank, one end of the magnetic separation screening mechanism is installed above the second collecting tank, and the other end of the magnetic separation screening mechanism stretches across the position above the discharging channel. The vibration exciter is installed at the bottom of the screening box. The special-shaped steel balls can be removed, and the quality of the reused steel balls is improved, so that the working efficiency of the ball mill is improved, the energy consumption is reduced, and the efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of ball mill steel ball screening equipment, in particular to a ball mill steel ball magnetic separation and screening equipment. Background Art

[0002] Enterprises in various industries that use steel ball mills need to select steel balls with qualified size and shape for reuse when replacing steel balls, and steel balls with unqualified size or shape need to be selected and recycled as scrap iron. At present, when most companies select steel balls, they need to empty the materials in the mill and then pour out the steel balls inside the ball mill from the cleaning port, and then select them manually. A small number of companies will use steel ball screening machines for steel ball screening. The main principle is to screen the steel balls through a screen with a certain inclination angle or a multi-layer screen plate composed of multiple steel pipes and steel bars with different spacings. The steel balls are screened layer by layer under the dual effects of gravity and steel pipe spacing. When this type of screening device is screening, the diameter of the selected steel balls is partially qualified, which means that steel balls with diameters that meet the screening requirements but with irregular shapes will be reused as qualified steel balls. For example, after screening, the rod-shaped and cake-shaped irregular iron blocks formed by the mutual squeezing of steel balls in the ball mill during operation will cause the diameter of such steel balls to change. If the maximum ball diameter of a certain steel ball just meets the requirements, but the minimum ball diameter does not meet the requirements, such steel balls cannot be screened out by the existing screening device, and often flow directly into the qualified steel ball area, and then are repeatedly added to the mill to work, affecting the working quality and work efficiency of the ball mill, resulting in increased energy consumption and cost of the ball mill. In order to solve the above technical problems, the present application provides a ball mill steel ball magnetic separation and screening equipment. Summary of the invention

[0003] The invention provides a ball mill steel ball magnetic separation and screening device, which can remove special-shaped steel balls with changed ball diameters, improve the quality of reused steel balls, thereby improving the working efficiency of the ball mill, reducing energy consumption and improving efficiency.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A magnetic separation and screening device for steel balls in a ball mill comprises a screening box, an upper screening frame, a lower screening frame, a magnetic separation and screening mechanism and a vibrator; the upper screening frame and the lower screening frame are arranged obliquely from top to bottom in the screening box; the screening box is provided with a steel ball inlet at the higher end corresponding to the upper screening frame; a first collecting trough is provided at the lower end of the upper screening frame, and a first screening outlet is provided on one side of the first collecting trough; a second collecting trough is provided at the lower end of the lower screening frame, and a second screening outlet is provided on one side of the second collecting trough; a material drop channel connected to the lower layer is provided at the rear of the second collecting trough, the magnetic separation and screening mechanism is located at the rear of the first collecting trough, one end of the magnetic separation and screening mechanism is installed above the second collecting trough, and the other end of the magnetic separation and screening mechanism spans to the top of the material drop channel; the vibrator is installed at the bottom of the screening box.

[0006] Furthermore, the upper screening frame and the lower screening frame each include a plurality of cylindrical screening rods arranged side by side, one end of each screening rod located below the steel ball inlet is set as a head end, and the other end is set as a tail end; the screening spacing between each two adjacent screening rods is equal; the screening spacing of the lower screening frame is slightly smaller than the screening spacing of the upper screening frame.

[0007] Furthermore, the magnetic separation and screening mechanism includes a mounting frame, an electromagnetic adsorption component, an active roller, a driven roller, a plurality of guide rollers, a conveyor belt and a driving motor; the active roller and the driven roller are arranged in parallel and spaced apart at the bottom of the mounting frame and are rotatably connected to the mounting frame, and a plurality of guide rollers are installed in parallel and spaced apart at the top of the mounting frame and are rotatably connected to the mounting frame; the conveyor belt is wound around the active roller, the driven roller and each of the guide rollers to form a circle; the driving motor is fixedly connected to the mounting frame and is transmission-connected to the active roller, and the driving motor drives the active roller to rotate to drive the conveyor belt to rotate from front to back; the electromagnetic adsorption component is fixedly connected to the mounting frame and is located in the circle of the conveyor belt, and the bottom of the electromagnetic adsorption component is flush with the lowest ends of the active roller and the driven roller, so that the inner side of the conveyor belt is close to the bottom of the electromagnetic adsorption component; a scraper is fixedly connected to the rear end of the mounting frame, and a gap is set between one side of the scraper and the outer side of the conveyor belt; the magnetic force of the electromagnetic adsorption component is adjustable.

[0008] Furthermore, the electromagnetic adsorption component includes an electromagnet, a magnetic force controller and a magnet shell; the bottom of the shell is a flat surface, the electromagnet is arranged in the shell, the electromagnet is electrically connected to the magnetic force controller, and the magnetic force controller is used to control the magnetic force of the electromagnet.

[0009] Furthermore, the ball mill steel ball magnetic separation and screening equipment also includes a spiral pushing mechanism, which is installed in the first collecting tank, and the pushing direction is toward the first screening outlet.

[0010] Furthermore, the ball mill steel ball magnetic separation and screening equipment also includes a discharge detection mechanism; the discharge detection mechanism includes two infrared gratings, and the two infrared gratings are distributed on both sides of the first screening outlet in a one-to-one correspondence.

[0011] Furthermore, the screening box comprises a steel ball feeding funnel, a screening box body, two front supporting legs and two rear supporting legs; the steel ball feeding funnel is fixedly connected to the front end top of the screening box body; the upper screening frame and the lower screening frame are obliquely arranged in the screening box body from top to bottom to separate the screening box body from top to bottom into an upper layer, a middle layer and a lower layer; the lengths of the upper layer, the middle layer and the lower layer are extended in sequence, the first collecting trough is located at the end of the upper layer, the second collecting trough is located at the end of the middle layer, the end of the middle layer is adjacent to the lower layer The material dropping channel is formed between the ends of the layers; the lower layer is provided with a waste outlet, and the front end bottom surface of the lower layer and the rear end bottom surface of the lower layer are both inclined toward the waste outlet; the vibrator is installed at the bottom of the front end of the screening box; the two front supporting legs are arranged one by one at both sides of the front end of the screening box, and the tops are connected to the screening box through a buffer spring; the two rear supporting legs are arranged one by one at both sides of the rear end of the screening box, and the tops are hinged to the screening box; the vibrator is installed at the bottom of the front end of the screening box.

[0012] The beneficial effects of the present invention are:

[0013] 1) The present invention performs two-layer screening through the upper screening frame and the lower screening frame to select steel balls suitable for reuse, and then uses the irregular steel balls, which are lighter than normal steel balls, to use the magnetic separation and screening mechanism to suck out the irregular shaped steel balls and collect them in a centralized manner; compared with the existing steel ball screening machine, the shaped steel balls with changed diameters can be removed, and the quality of the reused steel balls can be improved, thereby improving the working efficiency of the ball mill, reducing energy consumption, and improving efficiency.

[0014] 2) The upper screening rack can perform coarse screening to directly screen out qualified steel balls, and the lower screening rack can perform secondary screening on the steel balls in the critical qualified state to screen out the reusable steel balls in the critical qualified state. The magnetic separation and screening mechanism above the second collecting tank can screen out the steel balls with lighter weight through magnetic adsorption, and retain the qualified steel balls. In order to prevent selection errors, the steel balls coming out of the second collecting tank 31 can be put back into the steel ball inlet for secondary or even multiple screening.

[0015] 3) The electromagnetic adsorption component can adjust the magnetic force to be slightly less than the weight of the lowest qualified steel ball, and can adsorb the steel balls with smaller weight through the conveyor belt through the magnetic force, and transport the adsorbed steel balls to the rear end of the mounting frame during the conveying movement. After the steel balls hit the scraper, they are subjected to resistance and inertia and thus detach from the conveyor belt and fall from the blanking channel, while the qualified steel balls are retained in the second collecting trough and discharged from the second screening outlet.

[0016] 4) The spiral pushing mechanism can prevent the steel balls from accumulating in the first collecting tank 21 to form a blockage, and assist the steel balls to move quickly to the first screening outlet for discharge.

[0017] 5) The discharge detection mechanism can detect whether there are steel balls discharged from the first screening outlet. Under normal circumstances, the steel balls are continuously discharged, and the signal detected by the infrared grating is intermittent. If there is no signal or the signal is continuous and uninterrupted, it means that blockage has formed in the upper screening frame or there is a shortage of materials, which needs to be dealt with in time.

[0018] 6) The vibrator can make the screening box vibrate, and when vibrating, the front end shakes more, so that the steel balls can be thrown to the rear end. During the vibration process, the steel balls fall randomly on the screening rod in different directions, reducing the probability of irregular and unqualified steel balls being unable to be screened out, reducing screening errors, and improving screening effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings, wherein:

[0020] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0021] Figure 2 It is a top view of the overall structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure cut along a vertical bisecting plane in the present invention;

[0023] Figure 4 It is a three-dimensional diagram of the magnetic separation and screening mechanism of the present invention;

[0024] Figure 5 It is a side view of the magnetic separation and screening mechanism of the present invention;

[0025] Figure ID:

[0026] 1-screening box, 2-upper screening frame, 3-lower screening frame, 4-magnetic separation and screening mechanism, 5-vibrator, 6-screw pushing mechanism, 7-discharging detection mechanism, 11-steel ball feeding funnel, 12-screening box, 13-front supporting legs, 14-rear supporting legs, 15-waste outlet, 16 buffer spring, 21-first collecting trough, 22-first screening outlet, 31-second collecting trough, 32-second screening outlet, 41-mounting frame, 42-electromagnetic adsorption component, 43-active roller, 44-driven roller, 45-guide roller, 46-conveyor belt, 47-driving motor, 61-push rod driving motor, 62-screw push rod. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is referred to as being "set in the middle", it does not only mean being set in the middle, as long as it is not set at both ends within the range defined by the middle. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0030] Reference Figures 1 to 5As shown, a ball mill steel ball magnetic separation and screening device comprises a screening box 1, an upper screening frame 2, a lower screening frame 3, a magnetic separation and screening mechanism 4 and an exciter 5; the upper screening frame 2 and the lower screening frame 3 are arranged obliquely from top to bottom in the screening box 1; the screening box 1 is provided with a steel ball inlet at a higher end corresponding to the upper screening frame 2; the upper screening frame 2 is provided with a first collecting tank 21 at a lower end, and a first screening outlet 22 is provided on one side of the first collecting tank 21; the lower screening frame 2 is provided with a ... upper screening frame 2 is provided with a first collecting tank 21; the lower screening frame 2 is provided with a first collecting tank 21; the upper screening frame 2 is provided with a first collecting tank 21; the lower screening frame 2 is provided with a first collecting tank 21; the upper screening frame 2 is provided with a first collecting tank 21; the lower screening frame 2 is provided with a first collecting tank 21; the upper screening frame 2 is provided with a first collecting tank 21; the lower screening frame 2 is provided with a first collecting tank 21; the upper screening frame 2 A second collecting trough 31 is provided at the lower end of the screening frame 3, and a second screening outlet 32 ​​is provided at one side of the second collecting trough 31; a material drop channel connected to the lower layer is provided at the rear of the second collecting trough 21, and the magnetic separation screening mechanism 4 is located at the rear of the first collecting trough 21, and one end of the magnetic separation screening mechanism 4 is installed above the second collecting trough 31, and the other end of the magnetic separation screening mechanism 4 spans to the top of the material drop channel; the vibrator 5 is installed at the bottom of the screening box 1. The present invention performs two-layer screening through the upper screening frame 2 and the lower screening frame 3 to select steel balls with suitable ball diameters, and then uses the irregular steel balls that are lighter than normal steel balls to absorb irregular shaped steel balls with the magnetic separation screening mechanism 4 and collect them in a centralized manner; compared with the existing steel ball screening machine, it can remove shaped steel balls with changed ball diameters, improve the quality of reused steel balls, thereby improving the working efficiency of the ball mill, reducing energy consumption, and improving efficiency.

[0031] The upper screening frame 2 and the lower screening frame 3 both include a plurality of cylindrical screening rods arranged side by side, one end of each screening rod located below the steel ball inlet is set as a head end, and the other end is set as a tail end; the screening spacing between each two adjacent screening rods is equal; the screening spacing of the lower screening frame 3 is slightly smaller than the screening spacing of the upper screening frame 2. For example, if the screening benchmark for the diameter of steel balls is r=a, and the minimum ball diameter allowed for reuse is r>ab, the screening spacing of the upper screening frame 2 is a, and the upper screening frame 2 can screen out the steel balls with r>a, and the steel balls with r≤a will fall to the lower screening frame; the screening spacing of the lower screening frame 3 is set to ab, then the lower screening frame can screen out the steel balls with ab<r≤a, and the steel balls with r≤ab will fall down; the steel balls screened by the lower screening frame 3 may have some special shapes, for example, the ball diameter of a certain position of the same steel ball is r>ab, but a certain part of the ball diameter is r<ab, which just passes the screening of the lower screening frame 3 and flows into When entering the second collecting tank 31, the weight of these steel balls is less than that of the qualified steel balls with a lower limit diameter due to their different shapes. Therefore, the upper screening rack can perform coarse screening to directly screen out the qualified steel balls, and the lower screening rack can perform secondary screening on the steel balls in a critical qualified state to screen out the reusable steel balls in the critical qualified state. The magnetic separation and screening mechanism 4 above the second collecting tank 31 can screen out the steel balls with lighter weight through magnetic adsorption, and retain the qualified steel balls. In order to prevent selection errors, the steel balls coming out of the second collecting tank 31 can be put back into the steel ball entrance for secondary or even multiple screenings.

[0032] The magnetic separation and screening mechanism 4 includes a mounting frame 41, an electromagnetic adsorption assembly 42, an active roller 43, a driven roller 44, a plurality of guide rollers 45, a conveyor belt 46 and a drive motor 47; the active roller 43 and the driven roller 42 are arranged in parallel and spaced apart at the bottom of the mounting frame 41 and are rotatably connected to the mounting frame 41, and a plurality of guide rollers 45 are installed in parallel and spaced apart at the top of the mounting frame 41 and are rotatably connected to the mounting frame 41; the conveyor belt 46 is wound around the active roller 43, the driven roller 44 and each of the guide rollers 45 to form a circle; the drive motor 47 is fixedly connected to the mounting frame 41 and is connected to the driving roller 43 and driven roller 44. The active roller 43 is transmission connected, and the driving motor 47 drives the active roller 43 to rotate to drive the conveyor belt 46 to rotate from front to back; the electromagnetic adsorption component 42 is fixedly connected to the mounting frame 41, and is located in the circle of the conveyor belt 46. The bottom of the electromagnetic adsorption component 42 is flush with the lowest ends of the active roller 43 and the driven roller 44, so that the inner side of the conveyor belt 46 is close to the bottom of the electromagnetic adsorption component 42; a scraper 48 is fixedly connected to the rear end of the mounting frame 41, and a gap is set between one side of the scraper 48 and the outer side of the conveyor belt 46; the magnetic force of the electromagnetic adsorption component 42 is adjustable. The electromagnetic adsorption assembly 42 includes an electromagnet, a magnetic force controller and a magnet housing; the bottom of the housing is a flat surface, the electromagnet is arranged in the housing, the electromagnet is electrically connected to the magnetic force controller, and the magnetic force controller is used to control the magnetic force of the electromagnet. The magnetic force can be adjusted to be slightly less than the weight of the lowest qualified steel ball through multiple tests, and the steel ball with a smaller weight can be adsorbed through the conveyor belt by magnetic force, and the adsorbed steel ball is transported to the rear end of the mounting frame during the movement of the conveyor. After the steel ball hits the scraper, it is subjected to resistance and inertia and thus detaches from the conveyor belt and falls from the material drop channel, while the qualified steel ball is retained in the second collection tank 31 and discharged from the second screening outlet 32. In this embodiment, the mounting frame includes two connecting plates arranged in parallel along the vertical direction, and the two connecting plates are connected and fixed by a plurality of cross beams. The side wall of the magnet housing is fixedly connected to a corresponding connecting portion, and the active roller 43, the driven roller 44, and the plurality of guide rollers 45 are all rotatably connected between the two connecting plates.

[0033] Since the upper screening frame 2 receives a large number of steel balls, a large number of steel balls go out from the first screening outlet 22 of the first collecting tank 21. In order to prevent the steel balls from accumulating in the first collecting tank 21 to form a blockage, the bottom surface of the first collecting tank 21 should be inclined toward the first screening outlet 22. In addition, in order to assist the steel balls to move quickly toward the first screening outlet, the ball mill steel ball magnetic separation and screening equipment is further provided with a spiral pushing mechanism 6. The spiral pushing mechanism 6 is installed in the first collecting tank 31, and the pushing direction is toward the first screening outlet. In this embodiment, the spiral pushing mechanism 6 includes a push rod driving motor 61 and a spiral push rod 62. A pushing hole is opened in the first collecting tank 21 along the extension direction of the first screening outlet 22. The spiral push rod 62 is rotatably connected to the bottom of the first collecting tank 21. The top of the spiral push rod 62 is located in the mounting hole and protrudes from the mounting hole to the bottom surface of the first collecting tank 21. It should be noted that the spiral push rod 62 is matched with the mounting hole gap, and the gap should be much smaller than the ball diameter of the steel ball. The diameter of the spiral sheet of the spiral push rod also needs to be smaller than the ball diameter of the steel ball to avoid the steel ball from being stuck in the gap; the push rod driving motor 6 is fixedly connected to the outside of the first collecting tank 21 and is transmission connected to the spiral push rod 62. The pushing direction of the spiral push rod 62 is toward the first screening outlet 22.

[0034] The ball mill steel ball magnetic separation and screening equipment also includes a discharge detection mechanism 7; the discharge detection mechanism 7 includes two infrared gratings, which are respectively distributed on both sides of the first screening outlet and are used to detect whether steel balls are discharged from the first screening outlet. Under normal circumstances, steel balls are continuously discharged, and the signal detected by the infrared grating is continuously alternating. If no object is detected passing through or the signal is continuous and uninterrupted, it means that blockage has formed in the upper screening frame 2 or no material has come down, and timely processing is required.

[0035] The screening box 1 comprises a steel ball feeding funnel 11, a screening box body 12, two front supporting legs 13 and two rear supporting legs 14; the steel ball feeding funnel 11 is fixedly connected to the front end top of the screening box body 12, and the top of the steel ball feeding funnel is a steel ball inlet; the upper screening frame 2 and the lower screening frame 3 are arranged obliquely from top to bottom in the screening box body 12 to separate the screening box body 12 from top to bottom into an upper layer, a middle layer and a lower layer; the lengths of the upper layer, the middle layer and the lower layer are extended successively, the first collecting trough 21 is located at the end of the upper layer, the second collecting trough 31 is located at the end of the middle layer, and the material dropping channel is formed between the end of the middle layer and the end of the lower layer; the lower layer is provided with a waste outlet 15, and the front end bottom surface of the lower layer is connected to the rear end of the lower layer The bottom surfaces are all arranged inclined toward the waste outlet 15; the vibrator 5 is installed at the bottom of the front end of the screening box 12; the two front supporting legs 13 are arranged one by one on both sides of the front end of the screening box 12, and the tops are connected to the screening box 12 through a buffer spring 16; the two rear supporting legs 14 are arranged one by one on both sides of the rear end of the screening box 12, and the tops are hinged to the screening box 12; the vibrator 5 is installed at the bottom of the front end of the screening box, the vibrator 5 can make the screening box 12 in a vibrating state, and when vibrating, the front end shakes more, so that the steel balls can be thrown to the rear end. During the vibration process, the steel balls are randomly dropped on the screening rod in different directions, reducing the probability that the irregular unqualified steel balls cannot be distinguished and screened out, reducing the screening error, and improving the screening effect.

[0036] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Any modification or equivalent substitution that does not depart from the spirit and scope of the present invention shall be included in the scope of the technical solution of the present invention.

Claims

1. A ball mill steel ball magnetic separation and screening equipment, characterized in that: It includes a screening box, an upper screening frame, a lower screening frame, a magnetic separation screening mechanism and an exciter; the upper screening frame and the lower screening frame are arranged obliquely from top to bottom in the screening box; a steel ball inlet is provided at the higher end of the screening box corresponding to the upper screening frame; a first collecting trough is provided at the lower end of the upper screening frame, and a first screening outlet is provided on one side of the first collecting trough; a second collecting trough is provided at the lower end of the lower screening frame, and a second screening outlet is provided on one side of the second collecting trough; a material drop channel connected to the lower layer is provided at the rear of the second collecting trough, the magnetic separation screening mechanism is located at the rear of the first collecting trough, one end of the magnetic separation screening mechanism is installed above the second collecting trough, and the other end of the magnetic separation screening mechanism spans to the top of the material drop channel; the exciter is installed at the bottom of the screening box.

2. A ball mill steel ball magnetic separation and screening equipment according to claim 1, characterized in that: The upper screening frame and the lower screening frame both include a plurality of cylindrical screening rods arranged side by side, one end of each screening rod located below the steel ball inlet is set as a head end, and the other end is set as a tail end; the screening spacing between each two adjacent screening rods is equal; the screening spacing of the lower screening frame is slightly smaller than the screening spacing of the upper screening frame.

3. The ball mill steel ball magnetic separation and screening equipment according to claim 1, characterized in that: The magnetic separation and screening mechanism includes a mounting frame, an electromagnetic adsorption component, an active roller, a driven roller, a plurality of guide rollers, a conveyor belt and a driving motor; the active roller and the driven roller are arranged at a parallel interval at the bottom of the mounting frame and are rotatably connected to the mounting frame, and a plurality of guide rollers are installed at a parallel interval on the top of the mounting frame and are rotatably connected to the mounting frame; the conveyor belt is wound around the active roller, the driven roller and each of the guide rollers to form a circle; the driving motor is fixedly connected to the mounting frame and is transmission-connected to the active roller, and the driving motor drives the active roller to rotate to drive the conveyor belt to rotate from front to back; the electromagnetic adsorption component is fixedly connected in the mounting frame and is located in the circle of the conveyor belt, and the bottom of the electromagnetic adsorption component is flush with the lowest ends of the active roller and the driven roller, so that the inner side of the conveyor belt is close to the bottom of the electromagnetic adsorption component; a scraper is fixedly connected to the rear end of the mounting frame, and a gap is set between one side of the scraper and the outer side of the conveyor belt; the magnetic force of the electromagnetic adsorption component is adjustable.

4. The ball mill steel ball magnetic separation and screening equipment according to claim 3, characterized in that: The electromagnetic adsorption component includes an electromagnet, a magnetic force controller and a magnet shell; the bottom of the shell is a flat surface, the electromagnet is arranged in the shell, the electromagnet is electrically connected to the magnetic force controller, and the magnetic force controller is used to control the magnetic force of the electromagnet.

5. The ball mill steel ball magnetic separation and screening equipment according to claim 1, characterized in that: The ball mill steel ball magnetic separation and screening equipment also includes a spiral pushing mechanism, which is installed in the first collecting tank and has a pushing direction toward the first screening outlet.

6. The ball mill steel ball magnetic separation and screening equipment according to claim 5, characterized in that: The ball mill steel ball magnetic separation and screening equipment also includes a discharge detection mechanism; the discharge detection mechanism includes two infrared gratings, and the two infrared gratings are distributed on both sides of the first screening outlet in a one-to-one correspondence.

7. The ball mill steel ball magnetic separation and screening equipment according to claim 2, characterized in that: The screening box comprises a steel ball feeding funnel, a screening box body, two front supporting legs and two rear supporting legs; the steel ball feeding funnel is fixedly connected to the front end top of the screening box body; the upper screening frame and the lower screening frame are arranged obliquely from top to bottom in the screening box body to separate the screening box body from top to bottom into an upper layer, a middle layer and a lower layer; the lengths of the upper layer, the middle layer and the lower layer are extended in sequence, the first collecting trough is located at the end of the upper layer, the second collecting trough is located at the end of the middle layer, the end of the middle layer is adjacent to the end of the lower layer The material dropping channel is formed between the two ends; the lower layer is provided with a waste outlet, and the front end bottom surface of the lower layer and the rear end bottom surface of the lower layer are both inclined toward the waste outlet; the vibrator is installed at the front end bottom of the screening box; the two front supporting legs are arranged one by one at both sides of the front end of the screening box, and the tops are connected to the screening box through a buffer spring; the two rear supporting legs are arranged one by one at both sides of the rear end of the screening box, and the tops are hinged to the screening box; the vibrator is installed at the bottom of the front end of the screening box.

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