Ball mill for hard alloy powder processing

Abstract

The invention discloses a ball mill for hard alloy powder processing, which is characterized in that the ball mill comprises a grinding roller, the grinding roller is divided into a plurality of material grinding areas through corresponding isolation filter plates, and a plurality of corresponding grinding balls are respectively arranged in each material grinding area of the grinding roller; the material storage fixing cylinder is transversely provided with a corresponding material distribution cavity, and the material distribution cavity is divided into a plurality of material storage areas through corresponding grading plates; the grading scattering mechanism comprises a scattering shaft piece rotationally mounted in the storage fixing barrel, and a plurality of scattering rod pieces located in all the storage areas are evenly distributed and fixedly connected to the scattering shaft piece; the discharging mechanism comprises a discharging hopper fixedly connected to the material storage fixing barrel and discharging pipes connected to the bottom ends of the material storage areas. In the ball milling process of the materials, the materials can be directly screened in a grading mode, the materials obtained after grading screening can be automatically fed in place according to needs, and reasonable grinding operation can be synchronously conducted on the materials in different particle size ranges.

Description

Technical Field

[0001] The invention relates to the technical field of equipment for processing cemented carbide powder, and in particular to a ball mill for processing cemented carbide powder, which can effectively grind cemented carbide powder. Background Art

[0002] When processing cemented carbide powder, it needs to be ground by a corresponding ball mill. After being ground by a ball mill, the uniformity and density of the cemented carbide powder can be significantly improved, and the pores, inclusions and defects of the cemented carbide powder material can be reduced to improve the density and strength of the material.

[0003] The existing ball mills for processing cemented carbide powder mostly adopt conventional ball mills, which mostly include a fixed grinding drum and grinding balls arranged in the grinding drum. The grinding drum is driven by a rotating drive mechanism to rotate at a moderate speed, so as to drive the grinding balls arranged in the grinding drum to ball-mill the material. Since there are large differences in particle sizes of cemented carbide materials before grinding, the existing practice is to directly feed the entire batch of cemented carbide materials into the grinding drum of the ball mill, and then carry out continuous grinding operations. As the grinding process progresses, the materials that meet the fineness are filtered and discharged.

[0004] Directly feeding all cemented carbide materials with large particle size differences into the grinding operation will have a negative impact on the grinding effect and grinding efficiency. In order to improve the grinding effect and grinding efficiency, some manufacturers have begun to try to classify the cemented carbide materials to be ground, and then feed the materials with larger and smaller particle sizes in order according to the progress of the grinding process. This not only requires the installation of corresponding grading equipment, but also the overall grading and feeding operation process is extremely complicated, which does not meet the needs of modern production and processing at all.

[0005] Therefore, the research and development purpose of the present invention is to design a ball mill for processing carbide powder that can directly grade and screen the materials during the ball milling process, and can automatically feed the graded and screened materials into place as needed, so as to simultaneously perform reasonable grinding operations on materials of different particle size ranges, thereby effectively and significantly improving the grinding effect and grinding efficiency of the materials.‌ Summary of the invention

[0006] In view of the technical problems existing in the above-mentioned prior art, the present invention provides a ball mill for processing cemented carbide powder, which can effectively solve the technical problems existing in the above-mentioned prior art.

[0007] The technical solution of the present invention is: A ball mill for processing cemented carbide powder, comprising A grinding drum is rotatably mounted on a corresponding bracket and driven by a corresponding rotation driving mechanism. A corresponding discharge pipe is provided at the discharge end of the grinding drum to connect outwards. The grinding drum is divided into a plurality of abrasive areas by corresponding isolation filter plates. A plurality of corresponding grinding balls are provided in each abrasive area of ​​the grinding drum. Between two adjacent abrasive areas, the filter holes on the isolation filter plate in the abrasive area close to the discharge end of the grinding drum are smaller than the filter holes on the isolation filter plate in the abrasive area away from the discharge end of the grinding drum, and the ball diameter of the grinding balls in the abrasive area close to the discharge end of the grinding drum is smaller than the ball diameter of the grinding balls in the abrasive area away from the discharge end of the grinding drum. A material storage fixed cylinder, with closed ends and transversely fixedly installed on a bracket on the upper side of the grinding drum, a corresponding material dividing cavity is transversely arranged in the material storage fixed cylinder, the aperture of the material dividing cavity is arranged in an increasing state toward the side of the discharge end of the grinding drum, and the material dividing cavity is divided into storage areas equal in number to the abrasive areas by corresponding grading plates; between two adjacent storage areas, the grading holes on the grading plate in the storage area close to the discharge end of the grinding drum are smaller than the grading holes on the grading plate in the storage area away from the discharge end of the grinding drum; The grading and breaking up mechanism comprises a breaking up shaft rotatably mounted in the material storage fixed cylinder, the breaking up shaft is transmission-connected to the end of the grinding drum which is not provided with a material discharge pipe, and a plurality of breaking up rods located in each material storage area are evenly distributed and fixedly connected to the breaking up shaft; A material discharge mechanism, wherein a corresponding material discharge hopper is fixedly connected to the material storage fixed cylinder, and the discharge end of the material discharge hopper is connected to the top end of the material distribution chamber. The material discharge mechanism comprises a material discharge pipe connected to the bottom end of each material storage area, and the upper end of the material discharge pipe is respectively fixedly connected to the corresponding solenoid valve, and the lower end of the material discharge pipe is respectively connected downward to the corresponding electromagnet through a retractable elastic pipe fitting; the grinding roller is provided with a feeding hole corresponding to the position of the material discharge pipe, and the bottom side of the feeding hole is respectively provided with a corresponding plug body which can be lifted and lowered, and the periphery of the plug body is respectively fixedly connected upward with a plurality of guide shafts which are installed through the grinding roller, and the guide shaft and the grinding roller are fixed by a corresponding coil spring, and under the elastic force of the coil spring, the plug body is respectively fixed and pressed in the corresponding feeding hole, and the guide shaft and the coil spring are respectively made of non-magnetic metal materials, and the grinding roller is made of magnetic metal material.

[0008] A photoelectric sensor for detecting the position of the grinding roller is fixedly mounted on the bracket, and a label matched with the photoelectric sensor is fixedly mounted on the grinding roller at a position corresponding to the feed hole.

[0009] The outer ends of the guide shafts are respectively fixedly connected with corresponding pressing plates, and the coil spring is fixedly connected between the pressing plates and the grinding roller.

[0010] The grinding rollers are respectively provided with countersunk holes corresponding to the guide shafts, and the coil springs are respectively fixed between the pressing plates and the countersunk holes of the grinding rollers.

[0011] When material unloading is required, the grinding roller rotates until the photoelectric sensor detects the label, and the rotation drive mechanism stops; then, the electromagnet is energized and adsorbed to the grinding roller, the electromagnet exerts downward pressure on the pressure plate, the coil spring is squeezed into the countersunk hole of the grinding roller, and the guide shaft pushes the plug body to leave the corresponding feed hole, and the material is unloaded into the corresponding abrasive area along the gap between the plug body and the feed hole.

[0012] One end of the grinding drum which is not provided with a discharge pipe is fixedly connected with a mounting pipe which is rotatably mounted on the bracket, and a corresponding liquid inlet pipe is rotatably mounted outwardly on the mounting pipe.

[0013] The breaking shaft is connected to the installation pipe by belt transmission.

[0014] The rotary drive mechanism comprises a driving rack fixedly mounted on the grinding drum, and a group of transmission gears supported and meshedly connected to the driving rack are fixedly mounted on the bracket, wherein one transmission gear is fixedly connected to the output shaft end of the corresponding driving motor.

[0015] A corresponding supporting flange is fixedly mounted on one end of the grinding drum which is not provided with the rotating driving mechanism, and a group of supporting rollers which are supported and connected to the supporting flange are fixedly mounted on the bracket.

[0016] Advantages of the present invention: 1) The grinding drum of the present invention rotates under the drive of the rotary drive mechanism to drive the grinding balls to grind the materials. During this process, the scattering shaft located in the material storage fixed cylinder is synchronously driven to scatter the materials in the material distribution chamber entering the material storage fixed cylinder, which can not only form a preliminary crushing operation on the materials, but also scatter the materials entering the material distribution chamber. Since the aperture of the material distribution chamber is set in an increasing state toward the side of the discharge end of the grinding drum, during the material scattering process, the materials with small particle sizes can be transferred outward step by step, thereby forming a sufficient classification; the classified materials are directly fed into the corresponding abrasive area of ​​the grinding drum through the feeding mechanism, and directly pass through the grinding balls with large ball diameters to grind the materials with large particle sizes. In addition, during the grinding process, as the particle size of the materials decreases, they are gradually discharged to the discharge end of the grinding drum, thereby greatly improving the grinding effect and grinding efficiency of the materials of the present invention.

[0017] Thus, the following can be achieved: during the ball milling process, the materials can be directly graded and screened, and the graded and screened materials can be automatically fed into place as needed, so as to perform reasonable grinding operations on materials in different particle size ranges simultaneously, thereby effectively and significantly improving the grinding effect and efficiency of the materials.

[0018] 2) The unloading mechanism of the present invention comprises an unloading pipe connected to the bottom end of each material storage area, the upper end of the unloading pipe is respectively fixedly connected with an electromagnetic valve, and the lower end of the unloading pipe is respectively connected downwardly with a corresponding electromagnet through a retractable elastic pipe. When unloading, the grinding drum rotates until the photoelectric sensor detects the label, and the rotation drive mechanism stops; then, the electromagnet is energized and adsorbed to the grinding drum, the electromagnet exerts downward pressure on the pressure plate (guide shaft), the coil spring is squeezed, and the guide shaft pushes the plug body to leave the corresponding feed hole, so that the material can be unloaded into the corresponding abrasive area along the gap between the plug body and the feed hole. Thereby, without affecting the normal operation of the equipment, it is effectively ensured that the on-demand feeding of the present invention can be smoothly realized, so as to ensure the practical effect of the present invention.

[0019] 3) The grinding drum of the present invention is not provided with a discharge pipe, but is fixedly connected to one end thereof with a mounting pipe rotatably mounted on a bracket, and a corresponding liquid inlet pipe is rotatably mounted outwardly on the mounting pipe, through which wet grinding media can be pumped into the grinding drum to grind the material, thereby effectively improving the adaptability of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention.

[0021] Figure 2 It is a cross-sectional view of the present invention.

[0022] Figure 3 for Figure 1 A partial enlarged view of part A.

[0023] Figure 4 for Figure 2 A partial enlarged view of part B.

[0024] In the accompanying drawings: grinding roller 1, discharge pipe 101, bracket 2, driving mechanism 3, driving rack 301, transmission gear 302, driving motor 303, isolation filter plate 4, grinding balls 5, storage fixed cylinder 6, material distribution chamber 601, grading plate 7, grading and breaking up mechanism 8, breaking up shaft 801, breaking up rod 802, unloading mechanism 9, unloading pipe 901, solenoid valve 902, retractable elastic pipe 903, electromagnet 904, unloading hopper 10, feed hole 11, plug body 12, guide shaft 13, coil spring 14, photoelectric sensor 15, label 16, pressure plate 17, countersunk hole 18, mounting pipe 19, liquid inlet pipe 20, supporting convex edge 21, supporting roller 22. DETAILED DESCRIPTION

[0025] In order to facilitate understanding by those skilled in the art, the structure of the present invention is further described in detail with reference to the embodiments in conjunction with the accompanying drawings: refer to Figure 1-4 , a ball mill for processing cemented carbide powder, comprising A grinding drum 1 is rotatably mounted on a corresponding bracket 2 and is rotatably driven by a corresponding rotation driving mechanism 3. A corresponding discharge pipe 101 is provided at the discharge end of the grinding drum 1 to the outside. The grinding drum 1 is divided into a plurality of abrasive areas by corresponding isolation filter plates 4. A plurality of corresponding grinding balls 5 are provided in each abrasive area of ​​the grinding drum 1. Between two adjacent abrasive areas, the filter holes on the isolation filter plates 4 in the abrasive area close to the discharge end of the grinding drum 1 are smaller than the filter holes on the isolation filter plates 4 in the abrasive area away from the discharge end of the grinding drum 1, and the ball diameter of the grinding balls 5 in the abrasive area close to the discharge end of the grinding drum 1 is smaller than the ball diameter of the grinding balls 5 in the abrasive area away from the discharge end of the grinding drum 1. A material storage fixed cylinder 6 is closed at both ends and transversely fixedly installed on the bracket 2 on the upper side of the grinding drum 1. A corresponding material distribution cavity 601 is transversely arranged in the material storage fixed cylinder 6. The aperture of the material distribution cavity 601 is arranged in an increasing state toward the side of the discharge end of the grinding drum 1. The material distribution cavity 601 is divided into storage areas equal in number to the abrasive areas by corresponding grading plates 7. Between two adjacent storage areas, the grading holes on the grading plate 7 in the storage area close to the discharge end of the grinding drum 1 are smaller than the grading holes on the grading plate 7 in the storage area away from the discharge end of the grinding drum 1. The grading and breaking up mechanism 8 comprises a breaking up shaft 801 rotatably mounted in the material storage fixed cylinder 6, the breaking up shaft 801 is transmission-connected to the end of the grinding drum 1 where the discharge pipe 101 is not provided, and a plurality of breaking up rods 802 located in each material storage area are evenly distributed and fixedly connected to the breaking up shaft 801; The material discharging mechanism 9 includes a corresponding material discharging hopper 10 fixedly connected to the material storage fixed cylinder 6, the material discharging end of the material discharging hopper 10 is connected to the top end of the material distributing chamber 601, and the material discharging mechanism 9 includes a material discharging pipe 901 connected to the bottom end of each material storage area, the upper end of the material discharging pipe 901 is respectively fixedly connected to a corresponding solenoid valve 902, and the lower end of the material discharging pipe 901 is respectively connected downwardly to a corresponding electromagnet 904 through a retractable elastic pipe 903; the grinding drum 1 is provided with a feeding hole 1 corresponding to the position of the material discharging pipe 901 1, the bottom side of the feed hole 11 is respectively provided with a corresponding plug body 12 which can be lifted and lowered, and the periphery of the plug body 12 is respectively fixedly connected with a plurality of guide shafts 13 which are installed through the grinding drum 1, and the guide shaft 13 and the grinding drum 1 are fixed by corresponding coil springs 14, and under the elastic force of the coil springs 14, the plug body 12 is respectively fixed and pressed in the corresponding feed hole 11, and the guide shaft 13 and the coil spring 14 are respectively made of non-magnetic metal materials, and the grinding drum 1 is made of magnetic metal materials.

[0026] The bracket 2 is fixedly mounted with a photoelectric sensor 15 for detecting the position of the grinding drum 1, and the grinding drum 1 is fixedly mounted with a label 16 adapted to the photoelectric sensor 15 at a position corresponding to the feed hole 11. The outer ends of the guide shaft 13 are respectively fixedly connected with corresponding pressing plates 17, and the coil spring 14 is fixedly connected between the pressing plates 17 and the grinding drum 1.

[0027] The grinding drum 1 is provided with countersunk holes 18 corresponding to the guide shaft 13, and the coil spring 14 is fixed between the pressing plate 17 and the countersunk holes 18 of the grinding drum 1. When unloading is required, the grinding drum 1 rotates until the photoelectric sensor 15 detects the label 16, and the rotation drive mechanism 3 stops; then, the electromagnet 904 is energized and adsorbed to the grinding drum 1, and the electromagnet 904 forms a downward pressure on the pressing plate 17, and the coil spring 14 is squeezed into the countersunk hole 18 of the grinding drum 1, and the guide shaft 13 pushes the plug body 12 to leave the corresponding feed hole 11, and the material is unloaded into the corresponding abrasive area along the gap between the plug body 12 and the feed hole 11.

[0028] The grinding drum 1 of the present invention is driven by the rotating drive mechanism 3 to rotate to drive the grinding balls 5 to grind the materials. During this process, the scattering shaft 801 located in the material storage fixed cylinder 6 is synchronously driven to scatter the materials in the material distribution chamber 601 entering the material storage fixed cylinder 6, which can not only form a preliminary crushing operation on the materials, but also scatter the materials entering the material distribution chamber 601. Since the aperture of the material distribution chamber 601 is set in an increasing state toward the side of the discharge end of the grinding drum 1, during the material scattering process, the materials with small particle sizes can be transferred outward step by step, thereby forming a sufficient classification; the classified materials are directly fed into the corresponding abrasive area of ​​the grinding drum 1 through the feeding mechanism 9, and directly pass through the grinding balls 5 with large ball diameters to grind the materials with large particle sizes, and during the grinding process, as the particle size of the materials decreases, they are gradually discharged to the discharge end of the grinding drum 1, thereby greatly improving the grinding effect and grinding efficiency of the materials of the present invention.

[0029] When the graded materials are fed to the various abrasive areas of the grinding drum 1 through the feeding mechanism 9, first, the grinding drum 1 rotates until the photoelectric sensor 15 detects the label 16, and the rotating drive mechanism 3 stops operating; then, the electromagnet 904 is energized and adsorbed and connected to the grinding drum 1, and the electromagnet 904 exerts downward pressure on the pressure plate 17 and the guide shaft 13, the coil spring 14 is squeezed, and the guide shaft 13 pushes the plug body 12 to leave the corresponding feed hole 11, so that the material can be fed into the corresponding abrasive area along the gap between the plug body 12 and the feed hole 11.

[0030] The end of the grinding drum 1 not provided with the discharge pipe 101 is fixedly connected with a mounting pipe 19 rotatably mounted on the bracket 2, and the mounting pipe 19 is rotatably mounted with a corresponding liquid inlet pipe 20, and the scattering shaft 801 is connected to the mounting pipe 19 by belt transmission. Wet grinding media can be driven into the grinding drum 1 through the liquid inlet pipe 20 to grind the material, thereby effectively improving the adaptability of the present invention.

[0031] The rotation drive mechanism 3 comprises a driving rack 301 fixedly mounted on the grinding drum 1, and a group of transmission gears 302 supported and meshedly connected to the driving rack 301 are fixedly mounted on the bracket 2, wherein one of the transmission gears 302 is fixedly connected to the output shaft end of the corresponding driving motor 303. A corresponding supporting flange 21 is fixedly mounted on the end of the grinding drum 1 not provided with the rotation drive mechanism 3, and a group of supporting rollers 22 supported and connected to the supporting flange 21 are fixedly mounted on the bracket 2.

[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A ball mill for processing cemented carbide powder, characterized in that: include A grinding drum (1) is rotatably mounted on a corresponding bracket (2) and is rotatably driven by a corresponding rotation driving mechanism (3); a corresponding discharge pipe (101) is provided at the discharge end of the grinding drum (1) to connect to the outside; the grinding drum (1) is divided into a plurality of abrasive zones by corresponding isolation filter plates (4); and a plurality of corresponding grinding balls (5) are provided in each abrasive zone of the grinding drum (1); between two adjacent abrasive zones, the filter holes on the isolation filter plates (4) in the abrasive zone close to the discharge end of the grinding drum (1) are smaller than the filter holes on the isolation filter plates (4) in the abrasive zone away from the discharge end of the grinding drum (1); and the ball diameter of the grinding balls (5) in the abrasive zone close to the discharge end of the grinding drum (1) is smaller than the ball diameter of the grinding balls (5) in the abrasive zone away from the discharge end of the grinding drum (1); A material storage fixed cylinder (6) is closed at both ends and is transversely fixedly mounted on a bracket (2) on the upper side of the grinding roller (1); a corresponding material dividing cavity (601) is transversely arranged in the material storage fixed cylinder (6); the aperture of the material dividing cavity (601) is arranged in an increasing state toward the discharge end of the grinding roller (1); the material dividing cavity (601) is divided into material storage areas equal in number to the abrasive areas by corresponding grading plates (7); between two adjacent material storage areas, the grading holes on the grading plates (7) in the material storage area close to the discharge end of the grinding roller (1) are smaller than the grading holes on the grading plates (7) in the material storage area away from the discharge end of the grinding roller (1); The grading and breaking up mechanism (8) comprises a breaking up shaft (801) rotatably mounted in the material storage fixed cylinder (6), the breaking up shaft (801) being transmission-connected to the end of the grinding drum (1) not provided with the discharge pipe (101), and a plurality of breaking up rods (802) located in each material storage area are evenly distributed and fixedly connected to the breaking up shaft (801); A material discharge mechanism (9), wherein a corresponding material discharge hopper (10) is fixedly connected to the material storage fixed cylinder (6), the discharge end of the material discharge hopper (10) is connected to the top end of the material distribution chamber (601), the material discharge mechanism (9) comprises a material discharge pipe (901) connected to the bottom end of each material storage area, the upper end of the material discharge pipe (901) is respectively fixedly connected to a corresponding solenoid valve (902), and the lower end of the material discharge pipe (901) is respectively connected downwardly to a corresponding electromagnet (904) through a retractable elastic pipe (903); the grinding drum (1) is provided with a feeding hole (10) corresponding to the position of the material discharge pipe (901). 1), corresponding plug bodies (12) are respectively installed on the bottom sides of the feed holes (11) in a liftable manner, and a plurality of guide shafts (13) are respectively fixedly connected upwardly to the periphery of the plug bodies (12) and are installed through the grinding roller (1), and the guide shafts (13) and the grinding roller (1) are fixed by corresponding coil springs (14). Under the elastic force of the coil springs (14), the plug bodies (12) are respectively fixed and pressed in the corresponding feed holes (11), and the guide shafts (13) and the coil springs (14) are respectively made of non-magnetic metal materials, and the grinding roller (1) is made of magnetic metal materials.

2. A ball mill for processing cemented carbide powder according to claim 1, characterized in that: A photoelectric sensor (15) for detecting the position of the grinding roller (1) is fixedly mounted on the bracket (2), and a label (16) compatible with the photoelectric sensor (15) is fixedly mounted on the grinding roller (1) at a position corresponding to the feed hole (11).

3. A ball mill for processing cemented carbide powder according to claim 2, characterized in that: The outer ends of the guide shafts (13) are respectively fixedly connected to corresponding pressure plates (17), and the coil spring (14) is fixedly connected between the pressure plates (17) and the grinding roller (1).

4. A ball mill for processing cemented carbide powder according to claim 3, characterized in that: The grinding roller (1) is provided with countersunk holes (18) corresponding to the guide shaft (13), and the coil spring (14) is fixedly connected between the pressing plate (17) and the countersunk holes (18) of the grinding roller (1).

5. A ball mill for processing cemented carbide powder according to claim 4, characterized in that: When material unloading is required, the grinding roller (1) rotates until the photoelectric sensor (15) detects the label (16), and the rotation drive mechanism (3) stops operating; then, the electromagnet (904) is energized to be adsorbed and connected to the grinding roller (1), and the electromagnet (904) exerts downward pressure on the pressure plate (17), and the coil spring (14) is squeezed into the counterbore (18) of the grinding roller (1), and the guide shaft (13) pushes the plug body (12) away from the corresponding feed hole (11), and the material is unloaded into the corresponding abrasive area along the gap between the plug body (12) and the feed hole (11).

6. A ball mill for processing cemented carbide powder according to claim 1, characterized in that: One end of the grinding drum (1) not provided with a discharge pipe (101) is fixedly connected to a mounting pipe member (19) rotatably mounted on the bracket (2), and a corresponding liquid inlet pipe (20) is rotatably mounted on the mounting pipe member (19) outwardly.

7. A ball mill for processing cemented carbide powder according to claim 6, characterized in that: The breaking-up shaft (801) is connected to the mounting pipe (19) via a belt drive.

8. The ball mill for processing cemented carbide powder according to claim 1, characterized in that: The rotation drive mechanism (3) comprises a driving rack (301) fixedly mounted on the grinding drum (1), and a group of transmission gears (302) supported and meshedly connected to the driving rack (301) are fixedly mounted on the bracket (2), wherein one of the transmission gears (302) is fixedly connected to the output shaft end of the corresponding driving motor (303).

9. A ball mill for processing cemented carbide powder according to claim 8, characterized in that: A corresponding supporting flange (21) is fixedly mounted on one end of the grinding drum (1) that is not provided with the rotating drive mechanism (3), and a group of supporting rollers (22) that are supported and connected to the supporting flange (21) are fixedly mounted on the bracket (2).

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