CN118454824A - An automatic grading feeding device for ball mill - Google Patents

Abstract

The present invention relates to the technical field of ball mills, and in particular to an automatic grading and feeding device for a ball mill. Through the cooperation of a magnetic separation component, a screening component and a feeding component, a second conveyor belt is used to screen raw materials. Large particles are transmitted to a crushing box through the second conveyor belt for crushing, and then the crushed raw materials are transmitted to a storage bin again for recycling through a recovery component. Small particle raw materials enter the feeding component through a guide mechanism and are transmitted to a ball mill through the feeding component, so that the raw materials entering the ball mill are all small particles, which greatly shortens the crushing time of the ball mill. While screening, the metal raw materials on the second conveyor belt are adsorbed by an electromagnet sheet in a first conveyor belt, and the metal substances adsorbed on the first conveyor belt are collected by a collecting component, so as to achieve the effect of removing metal impurities from the raw materials transmitted on the second conveyor belt, thereby improving the automation of feeding the ball mill.

Description

An automatic grading feeding device for ball mill

Technical Field

The invention belongs to the technical field of ball mills, and in particular relates to an automatic grading feeding device for a ball mill.

Background Art

The automatic feeding equipment of the ball mill usually includes an electromagnetic suction device, an electric one-way control valve, an automatic pipeline lifting device, and a ball mill feed control component. The electromagnetic suction device and the electric one-way control valve are located at the feed port at the top of the ball mill to control the time and amount of slurry entering the ball mill. The automatic pipeline lifting device is connected to the electromagnetic suction device and can adjust the height of the pipeline as needed to match the feeding or discharging process. The ball mill feed control component is connected to the automatic pipeline lifting device and is responsible for controlling the feeding of the slurry and the feeding process of the positive pressure gas.

For example, the patent document application number is 202020444107.6, which discloses an automatic feeding ball mill, including an automatic feeding mechanism and a ball mill, the automatic feeding mechanism includes a conveying device and a hopper located above one end of the conveying device, the conveying device includes a conveyor belt support, a conveyor belt, rollers and a driving motor, the conveyor belt is located on the conveyor belt support, the rollers are located at both ends of the conveyor belt, the driving motor drives and connects the rollers, the outer surface of the upper roller is wrapped with a magnetic layer, and the oblique lower part of the upper roller is fixed on the conveyor belt support to provide a material guide trough; the device can automatically and evenly feed raw materials into the ball mill, improve the process quality, and at the same time, there is no need for workers to stay by the equipment to add materials, saving labor costs and improving production efficiency. A magnetic layer is provided to recover metal substances in the raw materials, a screen is provided to grade and crush the materials, increase the crushing efficiency, and prevent incompletely crushed materials from entering the discharge port, so that the materials are crushed more thoroughly.

However, although the above-mentioned ball mill can recover metal substances in the raw materials during automatic feeding, it does not grade and screen the raw materials before entering the ball mill, resulting in large differences in the size of the raw materials entering the ball mill. Since the large-sized raw materials after entering the ball mill have a long crushing interval, the overall crushing time of the ball mill is prolonged. Therefore, we need to propose an automatic grading and feeding device for a ball mill to solve the above-mentioned problems.

Summary of the invention

In view of the above problems, the present invention provides an automatic grading feeding device for a ball mill, comprising: a storage bin, a discharge port is provided on one side of the storage bin, and a discharge assembly for limiting the outflow rate of raw materials is installed at the discharge port;

A fixed plate is obliquely arranged on both sides of the discharging assembly, a supporting mechanism is installed at the lower end of the fixed plate, a magnetic separation assembly and a screening assembly are installed between the two fixed plates, and the magnetic separation assembly is located above the screening assembly;

The magnetic separation assembly includes a first conveyor belt and two first driving rods for driving the first conveyor belt to move, a plurality of electromagnet sheets are evenly distributed inside the first conveyor belt, the first driving rod is installed between two fixed plates, the first conveyor belt is sleeved on the outside of the two first driving rods, and one of the first driving rods is driven by a first motor;

A collecting assembly located on the upper surface of the first conveyor belt and used for collecting metal substances, wherein both ends of the collecting assembly are respectively connected to the fixing plate;

The screening assembly includes a second conveyor belt arranged in a grid shape and two second driving rods for driving the second conveyor belt to move, the two second driving rods are rotatably connected between two fixed plates, and the second conveyor belt is sleeved on the outside of the two second driving rods, and one of the second driving rods is driven by a second motor;

A flow guide mechanism installed on the inner side of the second conveyor belt, wherein a material conveying component for automatically conveying the raw materials collected by the flow guide mechanism to the inlet of the ball mill is arranged at the outlet of the flow guide mechanism;

The installation direction of the first conveyor belt is not parallel to the installation direction of the second conveyor belt, and the angle between the first conveyor belt and the second conveyor belt is 15-30°;

A crushing assembly is installed at one end of the fixed plate, one end of the second conveyor belt is provided with a drainage mechanism connected to the crushing assembly, and one side of the crushing assembly is connected to a recovery assembly connected to the storage bin.

Furthermore, the discharging assembly includes a fixed seat fixed at the discharging port, the internal rotation of the fixed seat is connected to a rotating shaft, the external sleeve of the rotating shaft is fixed with a fixed shaft, the outer wall of the fixed shaft is provided with a plurality of baffle plates at equal angles, and a third motor is installed at one end of the rotating shaft.

Furthermore, a connecting plate is fixed at the lower ends of the two fixing plates, and an attached vibrator is installed on the connecting plate.

Furthermore, the support mechanism includes support rods installed at both ends of the fixing plate, and the upper ends of the support rods are connected to the fixing plate via rubber pads.

Furthermore, the collecting assembly includes a collecting box installed between two fixed plates and a guide plate located on the upper surface of the first conveyor belt, one end of the collecting box is open, and the opposite sides of the guide plate are rotatably connected to the fixed plates through round rods, one end of the guide plate is provided with an inclined surface that fits the upper surface of the first conveyor belt, and the other end of the guide plate extends to the interior of the collecting box through the opening of the collecting box, one of the fixed plates is installed with an angle adjustment mechanism for adjusting the inclination angle of the collecting box, and one side of the collecting box is connected to the first discharge pipe.

Furthermore, the angle adjustment mechanism includes two support plates respectively fixed on the fixed plates, the support plates are rotatably connected with connecting rods, one end of one of the connecting rods is fixed with a driven wheel, the support plate containing the driven wheel is rotatably connected with a sleeve, the interior of the sleeve is slidably connected with an inner rod, one end of the inner rod is fixed with a driving wheel, the side walls of the driving wheel and the driven wheel are equidistantly provided with a plurality of arc-shaped protrusions, and the protrusions on the driving wheel and the protrusions on the driven wheel are staggered and meshed, a limiting block is fixed to the outer wall of the inner rod, a plurality of limiting holes for inserting the limiting blocks are equidistantly provided on the support plate, a giving way groove for the limiting blocks to move and give way is provided on the sleeve, and an adjustment block for adjusting the rotation of the driving wheel is fixed to one end of the driving wheel.

Furthermore, the guide mechanism includes an inclined plate located between two second driving rods, the inclined plate is installed on the inner side of the second conveyor belt, and the opposite sides of the inclined plate are fixed to the outer wall of the fixed plate, a baffle rod is fixed to one end of the inclined plate, and an inclined rod is fixed to the other end of the inclined plate, and a guide cavity is formed between the inclined rod, the inclined plate, the baffle rod and the two fixed plates, and a second discharge pipe is connected to the oblique angle of the guide cavity, and the second discharge pipe is connected to the feed port of the feeding assembly.

Furthermore, the feeding assembly includes a feeding auger and a second support rod for obliquely supporting the feeding auger. A second feed hopper is provided at one end of the feeding auger. The second feed hopper is located directly below the outlet of the second discharge pipe. The other end of the feeding auger is provided with a guide pipe connected to the inlet of the ball mill.

Furthermore, the drainage mechanism includes a feed pipe arranged in a funnel shape and a limit plate located between two fixed plates, the limit plate is fixed to the fixed plate between the first conveyor belt and the second conveyor belt, away from one end of the storage bin, the feed pipe is installed on the fixed plate below the second conveyor belt, and the lower end of the feed pipe extends to the interior of the crushing box, and there is a gap between the second conveyor belt and the limit plate.

Furthermore, the crushing assembly includes a crushing box and two crushing rollers installed inside the crushing box, both ends of the crushing rollers are rotatably connected to the inner wall of the crushing box through connecting shafts, one end of the crushing rollers is driven by a driving mechanism, the upper end of the crushing box is provided with a first feed hopper docked with a drainage mechanism, and the lower end of the crushing box is connected with a third discharge pipe; the recovery assembly includes a recovery auger and a first support rod for supporting the recovery auger to be inclined, one end of the third discharge pipe is connected to one end of the recovery auger, and the other end of the recovery auger is provided with a discharge pipe connected to the inside of the storage bin.

The beneficial effects of the present invention are:

1. The present invention uses the second conveyor belt to screen the raw materials through the cooperation of the magnetic separation component, the screening component and the feeding component. The large particles are transmitted to the crushing box through the second conveyor belt for crushing, and then the crushed raw materials are transmitted to the storage bin again for recycling through the recovery component. The small particle raw materials enter the feeding component through the guide mechanism and are transmitted to the ball mill by the feeding component, so that the raw materials entering the ball mill are all small particles, which greatly shortens the crushing time of the ball mill. While screening, the metal raw materials on the second conveyor belt are adsorbed by the electromagnet sheet in the first conveyor belt, and the metal substances adsorbed on the first conveyor belt are collected by the collecting component, so as to achieve the effect of removing metal impurities from the raw materials transmitted on the second conveyor belt. Through this equipment, the ball mill can automatically classify the raw materials before working, thereby improving the automation of feeding the ball mill.

2. The present invention can automatically and quantitatively load the raw materials in the storage bin through the cooperation of the discharging component and the screening component, thereby improving the uniformity of the second conveyor belt in conveying the raw materials.

3. The present invention can adjust the guide angle of the collecting component according to the particle size of the screened metal raw materials through the cooperation of the collecting component and the magnetic separation component, so that the screened metal raw materials can be effectively collected and transmitted through the guide plate for direction, thereby avoiding leakage of the metal raw materials during collection. When the metal raw materials are large or the amount is large, the gap becomes larger and the collecting box is tilted vertically more, so that the metal raw materials fall into the collecting box quickly. When the metal raw materials are small or the amount is small, the gap becomes smaller and the collecting box is relatively horizontal, so that such metal raw materials fall smoothly into the collecting box to prevent leakage.

Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

FIG1 shows a schematic structural diagram of an embodiment of the present invention;

FIG2 shows a schematic cross-sectional structure diagram according to an embodiment of the present invention;

FIG3 shows a schematic structural diagram of a discharging assembly according to an embodiment of the present invention;

FIG4 shows a schematic diagram of the structure of a collection component according to an embodiment of the present invention;

FIG5 shows a schematic structural diagram of a flow guiding mechanism according to an embodiment of the present invention;

FIG6 shows a schematic structural diagram of a recycling assembly according to an embodiment of the present invention;

FIG7 shows a schematic structural diagram of a material feeding assembly according to an embodiment of the present invention;

FIG8 shows a schematic structural diagram of a crushing assembly according to an embodiment of the present invention;

FIG. 9 shows a schematic diagram of the installation structure of the collection assembly and the fixing plate according to an embodiment of the present invention.

FIG. 10 shows a schematic structural diagram of an angle adjustment assembly according to an embodiment of the present invention.

In the figure: 1, storage bin; 2, fixed plate; 3, magnetic separation assembly; 31, first conveyor belt; 32, first drive rod; 4, screening assembly; 41, second conveyor belt; 42, second drive rod; 43, flow guide mechanism; 431, inclined plate; 432, blocking rod; 433, inclined rod; 434, second discharge pipe; 5, crushing assembly; 51, first feed hopper; 52, crushing box; 53, third discharge pipe; 54, drive mechanism; 55, crushing roller; 56, connecting shaft; 6, feeding assembly; 61, second feed hopper; 62, feeding auger; 63, second support rod; 64, flow guide pipe; 7, collecting assembly; 71, collecting box; 72, first discharge pipe; 7 3. Guide plate; 74. Socket; 75. Baffle; 76. Angle adjustment mechanism; 761. Driven wheel; 762. Connecting rod; 763. Driving wheel; 764. Inner rod; 765. Sleeve; 766. Limit block; 767. Make way groove; 768. Adjustment block; 769. Limit hole; 77. Round rod; 78. Support plate; 8. Recovery component; 81. Recovery auger; 82. Discharge pipe; 83. First support rod; 9. Discharge component; 91. Fixed seat; 92. Fixed shaft; 93. Rotating shaft; 94. Third motor; 95. Baffle plate; 10. Limit plate; 11. Discharge pipe; 12. Support rod; 13. Attached vibrator; 14. Connecting plate.

DETAILED DESCRIPTION

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

An embodiment of the present invention provides an automatic grading and feeding device for a ball mill, as shown in Figures 1-10, comprising: a storage bin 1, a discharge port is provided on one side of the storage bin 1, and a discharge assembly 9 for limiting the outflow rate of raw materials is installed at the discharge port; the lower end of the storage bin 1 is arranged in a conical shape, so that the raw materials stored in the storage bin 1 can be guided to the discharge port by the conical inclined surface, and then quantitatively discharged through the discharge assembly 9.

As shown in Figure 3, the discharging component 9 includes a fixed seat 91 fixed at the discharging port, the internal rotation of the fixed seat 91 is connected to a rotating shaft 93, the external sleeve of the rotating shaft 93 is fixed with a fixed shaft 92, and the outer wall of the fixed shaft 92 is provided with a plurality of baffle plates 95 at equal angles, and a third motor 94 is installed at one end of the rotating shaft 93, and the rotating shaft 93 is driven to rotate by the third motor 94, so that the rotating shaft 93 drives the fixed shaft 92 to rotate, and the fixed shaft 92 is rotated to drive the baffle plate 95 to move in a circle, and the raw materials in the storage bin 1 enter between two adjacent baffle plates 95, and then are pushed into the screening component 4 for screening operation by the movement of the baffle plate 95.

The fixed plates 2 are obliquely arranged on both sides of the discharging assembly 9, the lower end of the fixed plates 2 is installed with a supporting mechanism, and the magnetic separation assembly 3 and the screening assembly 4 are installed between the two fixed plates 2, and the magnetic separation assembly 3 is located above the screening assembly 4;

A connecting plate 14 is fixed to the lower ends of the two fixed plates 2, and an attached vibrator 13 is installed on the connecting plate 14. The supporting mechanism includes support rods 12 installed at both ends of the fixed plates 2. The upper ends of the support rods 12 are connected to the fixed plates 2 via rubber pads. The use of rubber pads allows the fixed plates 2 to have a certain buffer space. The vibration force generated by the attached vibrator 13 is used to make the fixed plates 2 vibrate in a small range, and then the screening component 4 and the magnetic separation component 3 are driven to vibrate through the fixed plates 2 to increase the screening efficiency of the screening component 4 and the magnetic separation component 3.

The magnetic separation component 3 includes a first conveyor belt 31 and two first driving rods 32 for driving the first conveyor belt 31 to move. A plurality of electromagnet sheets are evenly distributed inside the first conveyor belt 31. The first driving rod 32 is installed between the two fixed plates 2. The first conveyor belt 31 is sleeved on the outside of the two first driving rods 32, and one of the first driving rods 32 is driven by the first motor. The magnetism of the first conveyor belt 31 is increased by turning on or off the electromagnet sheets. When the screening component 4 screens and transmits the raw materials flowing out of the storage bin 1, the electromagnet sheets in the first conveyor belt 31 close to the side of the screening component 4 are energized, while the electromagnet sheets in the first conveyor belt 31 away from the side of the screening component 4 are de-energized. The metal substances on the screening component 4 are adsorbed by the magnetic adsorption principle. When the metal substances are transmitted to the side away from the screening component 4 through the first conveyor belt 31, the collecting component 7 is used to collect the metal substances.

A collecting assembly 7 located on the upper surface of the first conveyor belt 31 and used for collecting metal substances, wherein both ends of the collecting assembly 7 are respectively connected to the fixing plate 2;

The collecting assembly 7 includes a collecting box 71 installed between the two fixed plates 2 and a guide plate 73 located on the upper surface of the first conveyor belt 31. One end of the collecting box 71 is open, and the opposite sides of the guide plate 73 are rotatably connected to the fixed plate 2 through round rods 77. One end of the guide plate 73 is provided with an inclined surface that fits the upper surface of the first conveyor belt 31. The inclined surface is used to scrape and guide the metal substances adsorbed on the surface of the first conveyor belt 31, so that the metal substances can flow into the interior of the collecting box 71 through the guide plate 73 for collection. The other end of the guide plate 73 extends to the interior of the collecting box 71 through the opening of the collecting box 71. An angle adjustment device for adjusting the inclination angle of the collecting box 71 is installed on one of the fixed plates 2. The angle adjustment mechanism 76 is used to adjust the inclination angle of the guide plate 73 according to the particle size of the screened metal raw materials, so that the metal raw materials can flow into the collection box 71 along the guide plate 73, so as to directional transmit and collect the metal raw materials and prevent the metal raw materials from leaking during collection; one side of the collection box 71 is connected to the first discharge pipe 72, and a socket 74 is provided on one side of the first discharge pipe 72. A baffle 75 is movably inserted in the socket 74. When the baffle 75 is located in the socket 74, the inner cavity of the first discharge pipe 72 is blocked. When the baffle 75 is away from the first discharge pipe 72, the metal material collected in the collection box 71 is discharged through the first discharge pipe 72, thereby improving the convenience of discharging the metal material collected in the collection box 71.

The angle adjustment mechanism 76 includes two support plates 78 respectively fixed on the fixed plate 2, and the support plates 78 are rotatably connected with connecting rods 762, one end of which is fixed with a driven wheel 761, and the support plate 78 containing the driven wheel 761 is rotatably connected with a sleeve 765, the interior of the sleeve 765 is slidably connected with an inner rod 764, one end of the inner rod 764 is fixed with a driving wheel 763, and the driving wheel 763 and the driven wheel 761 are rotatably connected with each other. The side walls are evenly spaced with a plurality of arc-shaped protrusions, and the protrusions on the driving wheel 763 and the protrusions on the driven wheel 761 are staggered and meshed, the outer wall of the inner rod 764 is fixed with a limit block 766, the support plate 78 is evenly spaced with a plurality of limit holes 769 for inserting the limit blocks 766, the sleeve 765 is provided with a clearance groove 767 for the limit blocks 766 to move and make way, and one end of the driving wheel 763 is fixed with an adjustment block 768 for adjusting the rotation of the driving wheel 763;

When adjusting, the driving wheel 763 is pulled outward toward the end away from the support plate 78, so that the limit block 766 is away from the yield groove and the limit hole 769. The driving wheel 763 is always engaged with the protrusion on the driven wheel 761 when moving. The driving wheel 763 is rotated by the adjustment block 768, so that the driving gear drives the driven wheel 761 to rotate, so that the collection box 71 is rotated around the connecting rod 762 as the axis to adjust the installation angle of the collection box 71. Since one end of the guide plate 73 is rotatably connected to the fixed plate 2 through the round rod 77, and the other end of the guide plate 73 is located inside the collection box 71, when the installation angle of the collection box 71 changes, the guide plate 73 is also tilted by the push of the open part of the collection box 71 The change in angle can adjust the gap between the guide plate 73 and the inner wall of the collection box 71, so that the metal raw materials can pass through the gap and enter the interior of the collection box 71. By adjusting the gap between the guide plate 73 and the inner wall of the collection box 71, the metal raw materials can be guided, so that flexible adjustments can be made according to the size and amount of different metal raw materials. When the metal raw materials are large or the amount is large, the gap becomes larger, and the collection box 71 is tilted vertically more, so that the metal raw materials fall into the collection box 71 quickly. When the metal raw materials are small or the amount is small, the gap becomes smaller, and the collection box 71 is more horizontal, so that such metal raw materials fall smoothly into the collection box 71 to prevent leakage. At the same time, it can also prevent the metal raw materials collected in the collection box 71 from flowing back.

The screening component 4 includes a second conveyor belt 41 arranged in a grid shape and two second driving rods 42 for driving the second conveyor belt 41 to move, the two second driving rods 42 are rotatably connected between the two fixed plates 2, and the second conveyor belt 41 is sleeved on the outside of the two second driving rods 42, one of the second driving rods 42 is driven by a second motor; the raw materials flowing out of the storage bin 1 are screened and filtered by the grid-shaped second conveyor belt 41, and the large-particle raw materials are transmitted to the crushing component 5 for crushing through the second conveyor belt 41, and the small-particle raw materials pass through the second conveyor belt 41 and fall onto the guide mechanism 43, and then are transmitted to the ball mill for processing through the feeding component 6, which effectively shortens the time for the ball mill to crush the raw materials, and the magnetic separation mechanism is used to screen the metal substances of the large-particle substances transmitted by the second conveyor belt 41. In this way, the graded screening of the raw materials during the feeding process is achieved, which improves the processing efficiency of the ball mill to a certain extent.

A flow guide mechanism 43 installed on the inner side of the second conveyor belt 41, wherein a material conveying component 6 for automatically conveying the raw materials collected by the flow guide mechanism 43 to the inlet of the ball mill is provided at the outlet of the flow guide mechanism 43;

The guide mechanism 43 includes an inclined plate 431 located between the two second driving rods 42, the inclined plate 431 is installed on the inner side of the second conveyor belt 41, and the opposite sides of the inclined plate 431 are fixed to the outer wall of the fixed plate 2, one end of the inclined plate 431 is fixed with a baffle rod 432, and the other end of the inclined plate 431 is fixed with an inclined rod 433, and the inclined rod 433, the inclined plate 431, the baffle rod 432 and the two fixed plates 2 form a guide cavity, and the oblique angle of the guide cavity is connected to a second discharge pipe 434, and the second discharge pipe 434 is connected to the feed port of the feed assembly 6. When the second conveyor belt 41 transports the raw materials, the small particle raw materials pass through the mesh on the second conveyor belt 41 and fall into the inside of the guide cavity, and then the inclined surface of the guide cavity is used to transport the small particle raw materials through the second discharge pipe 434 to the feed assembly 6, and then the feed assembly 6 is used to automatically load the ball mill, without the need for additional personnel to guard, thus saving personnel usage.

The feeding assembly 6 includes a feeding auger 62 and a second support rod 63 for obliquely supporting the feeding auger 62. A second feed hopper 61 is provided at one end of the feeding auger 62. The second feed hopper 61 is located directly below the outlet of the second discharge pipe 434. The other end of the feeding auger 62 is provided with a guide pipe 64 connected to the inlet of the ball mill. The guide pipe 64 is configured as an arc pipe or an L-shaped bend pipe. The feeding auger 62 realizes transportation by pushing the material forward along the casing through the rotation of the spiral blades. This is a prior art and will not be described in detail here.

The installation direction of the first conveyor belt 31 is not parallel to the installation direction of the second conveyor belt 41, and the angle between the first conveyor belt 31 and the second conveyor belt 41 is 15-30°; as shown in Figure 2, the distance between the first conveyor belt 31 and the second conveyor belt 41 near the storage bin 1 is small, so that the raw materials in the storage bin 1 first pass through the discharging component 9 and enter the second conveyor belt 41. Then, shortening the distance between the first conveyor belt 31 and the second conveyor belt 41 helps to make the electromagnet sheet in the first conveyor belt 31 adsorb metal substances at a closer distance, and the distance between the first conveyor belt 31 and the second conveyor belt 41 away from the storage bin 1 is large, so that the metal substances adsorbed on the first conveyor belt 31 gradually move away from the second conveyor belt 41, so as to facilitate metal impurity removal of large particle substances transmitted on the second conveyor belt 41.

A crushing assembly 5 is installed at one end of the fixed plate 2, and one end of the second conveyor belt 41 is provided with a drainage mechanism connected to the crushing assembly 5, and one side of the crushing assembly 5 is connected to a recovery assembly 8 connected to the storage bin 1.

The drainage mechanism includes a feed pipe 11 arranged in a funnel shape and a limit plate 10 located between two fixed plates 2. The limit plate 10 is fixed to the fixed plate 2 between the first conveyor belt 31 and the second conveyor belt 41 at one end away from the storage bin 1. The feed pipe 11 is installed on the fixed plate 2 located below the second conveyor belt 41, and the lower end of the feed pipe 11 extends to the interior of the crushing box 52. There is a gap between the second conveyor belt 41 and the limit plate 10. The material on the second conveyor belt 41 falls into the feed pipe 11 through the gap between the limit plate 10 and the second conveyor belt 41, and then is drained to the crushing assembly 5 through the feed pipe 11 for crushing.

The crushing assembly 5 includes a crushing box 52 and two crushing rollers 55 installed inside the crushing box 52. Both ends of the crushing rollers 55 are rotatably connected to the inner wall of the crushing box 52 through a connecting shaft 56. One end of the crushing roller 55 is driven by a driving mechanism 54. The upper end of the crushing box 52 is provided with a first feeding hopper 51 connected to the drainage mechanism. The lower end of the crushing box 52 is connected with a third discharge pipe 53. The driving mechanism 54 can be directly driven by a driving motor, or a transmission gear can be installed at one end of the connecting shaft 56 to mesh the transmission gears on the two crushing rollers 55. Then, the driving motor is used to drive one of the connecting shafts 56. The two crushing rollers 55 are driven to rotate in relative directions through the driving mechanism 54. Large particle raw materials enter the crushing box 52 through the drainage mechanism and pass between the two crushing rollers 55 to crush the large particle raw materials. The crushed raw materials enter the recovery assembly 8 through the third discharge pipe 53 to transfer the crushed raw materials to the storage bin 1 for cyclic feeding and use.

The recovery component 8 includes a recovery auger and a first support rod 83 for supporting the recovery auger 81 at an inclined installation. One end of the third discharge pipe 53 is connected to one end of the recovery auger 81. The third discharge pipe 53 is arranged at an inclined position. The other end of the recovery auger 81 is provided with a discharge pipe 82 connected to the interior of the storage bin 1. The recovery auger 81 promotes the material to move forward along the casing to achieve transportation through the rotation of the spiral blades. The crushed raw materials enter the interior of the recovery auger through the discharge pipe 82 and then are transferred to the interior of the storage bin 1 for use through the recovery auger 81.

When the ball mill is automatically fed, the raw materials are first stored in the storage bin 1, and the fixed shaft 92 is driven to rotate by the third motor 94, so that the fixed shaft 92 drives the plurality of baffle plates 95 to move in a circular motion, so as to automatically and quantitatively feed the second conveyor belt 41, thereby improving the uniformity of the second conveyor belt 41 in conveying the raw materials. The raw materials are screened by the second conveyor belt 41, and the large particles are transmitted to the crushing box 52 through the second conveyor belt 41 for crushing, and then the crushed raw materials are transmitted to the storage bin 1 again for recycling through the recovery component 8, and the small particles of raw materials enter the conveyor belt 43 through the guide mechanism 43. The material component 6 is used to transmit the material to the ball mill, so that the raw materials entering the ball mill are all small particles, which greatly shortens the crushing time of the ball mill. While screening, the metal raw materials on the second conveyor belt 41 are adsorbed by the electromagnet sheet in the first conveyor belt 31, and the metal substances adsorbed on the first conveyor belt 31 are collected by the collecting component 7, so as to achieve the effect of removing metal impurities from the raw materials transmitted on the second conveyor belt 41. Through this equipment, the ball mill can automatically grade the raw materials before working, and does not need to occupy personnel to guard, thereby improving the automation of feeding the ball mill.

Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. An automatic grading feeding device for a ball mill, characterized in that it comprises: a storage bin (1), a discharge port is provided on one side of the storage bin (1), and a discharge assembly (9) for limiting the outflow rate of raw materials is installed at the discharge port; A fixed plate (2) is obliquely arranged on both sides of the discharge assembly (9), a support mechanism is installed at the lower end of the fixed plate (2), a magnetic separation assembly (3) and a screening assembly (4) are installed between the two fixed plates (2), and the magnetic separation assembly (3) is located above the screening assembly (4); The magnetic separation component (3) comprises a first conveyor belt (31) and two first driving rods (32) for driving the first conveyor belt (31) to move, a plurality of electromagnet sheets are evenly distributed inside the first conveyor belt (31), the first driving rods (32) are installed between two fixed plates (2), the first conveyor belt (31) is sleeved on the outside of the two first driving rods (32), and one of the first driving rods (32) is driven by a first motor; A collecting component (7) located on the upper surface of the first conveyor belt (31) and used for collecting metal substances, wherein both ends of the collecting component (7) are respectively connected to the fixing plate (2); The screening assembly (4) comprises a second conveyor belt (41) arranged in a grid shape and two second driving rods (42) for driving the second conveyor belt (41) to move, the two second driving rods (42) are rotatably connected between the two fixed plates (2), and the second conveyor belt (41) is sleeved on the outside of the two second driving rods (42), and one of the second driving rods (42) is driven by a second motor; A flow guiding mechanism (43) installed on the inner side of the second conveyor belt (41), wherein a material conveying component (6) is provided at the outlet of the flow guiding mechanism (43) for automatically conveying the raw materials collected by the flow guiding mechanism (43) to the inlet of the ball mill; The installation direction of the first conveyor belt (31) is not parallel to the installation direction of the second conveyor belt (41), and the angle between the first conveyor belt (31) and the second conveyor belt (41) is 15-30°; A crushing assembly (5) is mounted on one end of the fixed plate (2); one end of the second conveyor belt (41) is provided with a drainage mechanism connected to the crushing assembly (5); one side of the crushing assembly (5) is connected to a recovery assembly (8) connected to the storage bin (1). 2. An automatic grading and feeding device for a ball mill according to claim 1, characterized in that: the discharge assembly (9) includes a fixed seat (91) fixed at the discharge port, the fixed seat (91) is internally rotatably connected to a rotating shaft (93), the rotating shaft (93) is externally sleeved and fixed with a fixed shaft (92), the outer wall of the fixed shaft (92) is provided with a plurality of baffle plates (95) at equal angles, and a third motor (94) is installed at one end of the rotating shaft (93). 3. An automatic grading and feeding device for a ball mill according to claim 2, characterized in that: a connecting plate (14) is fixed to the lower ends of the two fixed plates (2), and an attached vibrator (13) is installed on the connecting plate (14). 4. An automatic grading and feeding device for a ball mill according to claim 3, characterized in that: the supporting mechanism includes supporting rods (12) installed at both ends of the fixed plate (2), and the upper ends of the supporting rods (12) are connected to the fixed plate (2) through rubber pads. 5. An automatic grading and feeding device for a ball mill according to claim 4, characterized in that: the collecting assembly (7) includes a collecting box (71) installed between two fixed plates (2) and a guide plate (73) located on the upper surface of the first conveyor belt (31), one end of the collecting box (71) is open, and the opposite sides of the guide plate (73) are rotatably connected to the fixed plate (2) through round rods (77), one end of the guide plate (73) is provided with an inclined surface that fits the upper surface of the first conveyor belt (31), and the other end of the guide plate (73) extends through the opening of the collecting box (71) to the interior of the collecting box (71), one of the fixed plates (2) is installed with an angle adjustment mechanism (76) for adjusting the inclination angle of the collecting box (71), and one side of the collecting box (71) is connected to the first discharge pipe (72). 6. An automatic grading and feeding device for a ball mill according to claim 5, characterized in that: the angle adjustment mechanism (76) comprises two support plates (78) respectively fixed on the fixed plate (2), the support plates (78) are rotatably connected with connecting rods (762), one end of one of the connecting rods (762) is fixed with a driven wheel (761), the support plate (78) containing the driven wheel (761) is rotatably connected with a sleeve (765), the interior of the sleeve (765) is slidably connected with an inner rod (764), one end of the inner rod (764) is fixed with a driving wheel (763), The side walls of the driving wheel (763) and the driven wheel (761) are both equidistantly provided with a plurality of arc-shaped protrusions, and the protrusions on the driving wheel (763) and the protrusions on the driven wheel (761) are arranged in a staggered meshing manner. A limiting block (766) is fixed to the outer wall of the inner rod (764). A plurality of limiting holes (769) for inserting the limiting blocks (766) are equidistantly provided on the support plate (78). A giving way groove (767) for the limiting blocks (766) to move and give way is provided on the sleeve (765). An adjusting block (768) for adjusting the rotation of the driving wheel (763) is fixed to one end of the driving wheel (763). 7. An automatic grading and feeding device for a ball mill according to claim 6, characterized in that: the guide mechanism (43) includes an inclined plate (431) located between the two second driving rods (42), the inclined plate (431) is installed on the inner side of the second conveyor belt (41), and the opposite sides of the inclined plate (431) are fixed to the outer wall of the fixed plate (2), one end of the inclined plate (431) is fixed with a blocking rod (432), and the other end of the inclined plate (431) is fixed with an inclined rod (433), the inclined rod (433), the inclined plate (431), the blocking rod (432) and the two fixed plates (2) form a guide cavity, and the second discharge pipe (434) is connected to the oblique angle of the guide cavity, and the second discharge pipe (434) is connected to the feed inlet of the feeding assembly (6). 8. An automatic grading feeding device for a ball mill according to claim 7, characterized in that: the feeding assembly (6) includes a feeding auger (62) and a second support rod (63) for obliquely supporting the feeding auger (62), a second feed hopper (61) is provided at one end of the feeding auger (62), and the second feed hopper (61) is located directly below the outlet of the second discharge pipe (434), and the other end of the feeding auger (62) is provided with a guide pipe (64) connected to the inlet of the ball mill. 9. An automatic grading and feeding device for a ball mill according to claim 8, characterized in that: the drainage mechanism includes a feed pipe (11) arranged in a funnel shape and a limit plate (10) located between two fixed plates (2), the limit plate (10) is fixed to the fixed plate (2) between the first conveyor belt (31) and the second conveyor belt (41) away from one end of the storage bin (1), the feed pipe (11) is installed on the fixed plate (2) located below the second conveyor belt (41), and the lower end of the feed pipe (11) extends to the interior of the crushing box (52), and there is a gap between the second conveyor belt (41) and the limit plate (10). 10. An automatic grading and feeding device for a ball mill according to claim 9, characterized in that: the crushing component (5) includes a crushing box (52) and two crushing rollers (55) installed inside the crushing box (52), both ends of the crushing rollers (55) are rotatably connected to the inner wall of the crushing box (52) through a connecting shaft (56), one end of the crushing roller (55) is driven by a driving mechanism (54), the upper end of the crushing box (52) is provided with a first feeding hopper (51) connected to a drainage mechanism, and the lower end of the crushing box (52) is connected to a third discharge pipe (53); the recovery component (8) includes a recovery auger and a first support rod (83) for supporting the recovery auger (81) to be inclined, one end of the third discharge pipe (53) is connected to one end of the recovery auger (81), and the other end of the recovery auger (81) is provided with a discharge pipe (82) connected to the inside of the storage bin (1).