Screening device for hard alloy steel balls

Abstract

The utility model discloses a hard alloy steel ball screening device which comprises a shell, an outer cylinder, a middle cylinder and an inner cylinder, the outer cylinder, the middle cylinder and the inner cylinder are sequentially distributed in the shell from outside to inside at intervals, a power mechanism used for driving the outer cylinder, the middle cylinder and the inner cylinder to rotate is arranged outside the shell, and the outer cylinder and the middle cylinder as well as the middle cylinder and the inner cylinder are all rotationally connected. The middle cylinder and the inner cylinder are each provided with a plurality of screen holes, the screen holes in the middle cylinder are larger than the screen holes in the inner cylinder, a hopper is arranged at one end of the shell, a one-way feeding port communicated with the hopper is formed in one end of the outer cylinder, and the other end, opposite to the hopper, of the inner cylinder extends out of the middle cylinder to form a fine material discharging part. The other end, opposite to the hopper, of the middle cylinder extends out of the outer cylinder to form a middle material discharging part, and the other end, opposite to the hopper, of the outer cylinder is provided with a large material discharging part. Steel balls placed in the hopper enter the outer cylinder from the one-way feeding port, the outer cylinder, the middle cylinder and the inner cylinder rotate through the power mechanism, the steel balls with the largest size are left in the outer cylinder, the steel balls with the middle size and the steel balls with the small size enter the middle cylinder, and then the steel balls with the small size enter the inner cylinder from the middle cylinder. Screened steel balls are discharged from the large material discharging part, the medium material discharging part and the fine material discharging part respectively, due to the fact that the screen is arranged in a split mode and is arranged to be in a rotatable barrel shape, in addition, the steel balls are sequentially screened out from large sizes to small sizes, and the problem that the screening efficiency is affected due to the fact that the steel balls block drying holes is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of screening devices, and more specifically, to a screening device for hard alloy steel balls. Background Art

[0002] After the carbide steel balls are produced, their surfaces need to be polished and ground to make the surface of the steel balls smooth. In order to improve the polishing efficiency of the steel balls, steel balls of different sizes are uniformly placed in the roller of the grinder. After the surfaces of all the steel balls are polished, the steel balls of different sizes are screened.

[0003] The screening efficiency of the traditional steel ball screening device is low, because the screening net is set in a flat shape, and there are sieve holes of different sizes on the screening net. The aperture of the holes gradually increases according to the movement trajectory of the steel balls. However, steel balls larger than the aperture of the sieve holes are easily stuck in the sieve holes, resulting in a decrease in the number of sieve holes of the same size. Therefore, the screening efficiency will continue to decrease. Therefore, it is necessary to improve the traditional steel ball screening device. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the screening efficiency of the traditional steel ball screening device is relatively low, and thus a screening device for hard alloy steel balls is provided to solve the above problem.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A screening device for carbide steel balls comprises a shell and an outer cylinder, a middle cylinder and an inner cylinder arranged in the shell and spaced from the outside to the inside in sequence. A power mechanism for driving the outer cylinder, the middle cylinder and the inner cylinder to rotate is arranged outside the shell. The outer cylinder is rotatably connected to the middle cylinder, and the middle cylinder is rotatably connected to the inner cylinder. A plurality of sieve holes are provided on the middle cylinder and the inner cylinder. The sieve holes on the middle cylinder are larger than the sieve holes on the inner cylinder. A hopper is provided at one end of the shell, and a one-way feed port communicated with the hopper is provided at one end of the outer cylinder. The other end of the inner cylinder relative to the hopper extends out of the middle cylinder to form a fine material discharging portion, the other end of the middle cylinder relative to the hopper extends out of the outer cylinder to form a medium material discharging portion, and the other end of the outer cylinder relative to the hopper is set as a large material discharging portion.

[0007] Preferably, the outer cylinder is spaced apart from the inner wall of the shell, and the distance is smaller than the radius of the smallest steel ball.

[0008] Preferably: the outer cylinder is arranged obliquely upward from the feed end to the discharge end, the generatrix of the outer cylinder is arranged parallel to the generatrix of the middle cylinder and the generatrix of the inner cylinder, and spiral blades are arranged on the inner circumferential surface of the middle cylinder, the inner circumferential surface of the middle cylinder, and the inner circumferential surface of the inner cylinder.

[0009] Preferably: the power mechanism includes a rotating motor, a main shaft, a driving wheel, a first driven wheel and a second driven wheel, one end of the main shaft is coaxially fixedly connected to the output shaft of the rotating motor, the other end of the main shaft is coaxially fixedly connected to the inner cylinder, the other end of the outer cylinder relative to the large material discharging portion is transmission connected to the first driven wheel, the other end of the middle cylinder relative to the middle material discharging portion is transmission connected to the second driven wheel, the driving wheel is coaxially fixedly connected to the main shaft, and the first driven wheel, the second driven wheel and the driving wheel are connected by belt or chain transmission.

[0010] Preferably: a first reinforcing plate is installed at the other end of the outer cylinder relative to the large material discharge portion, and a second reinforcing plate is installed at the other end of the middle cylinder relative to the medium material discharge portion, the first reinforcing plate and the second reinforcing plate are both arranged in an annular shape, and the inner ring of the first reinforcing plate is slidably connected with the outer ring of the second reinforcing plate;

[0011] A first annular tooth groove is provided on the outer wall of the first reinforcing plate, and a second annular tooth groove is provided on the outer wall of the second reinforcing plate coaxially arranged with the first annular tooth groove. A first gear shaft coaxially fixedly connected to the first driven wheel is meshed in the first annular tooth groove, and a second gear shaft coaxially fixedly connected to the second driven wheel is meshed in the second annular tooth groove.

[0012] The utility model has the following beneficial effects: the steel balls placed in the hopper enter the outer cylinder from the one-way feed port, the outer cylinder, the middle cylinder and the inner cylinder are all rotated by the power mechanism, the largest-sized steel balls remain in the outer cylinder, the medium-sized and small-sized steel balls enter the middle cylinder, and then the small-sized steel balls enter the inner cylinder from the middle cylinder, and the screened steel balls are discharged from the large material discharging part, the medium material discharging part and the fine material discharging part respectively, because the screens are separately arranged and are all arranged in a rotatable cylindrical shape, in addition, the steel balls are screened out in order from large size to small size, which also avoids the problem of steel balls blocking the drying holes and affecting the screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Schematic diagram of the screening device for carbide steel balls Figure 1 ;

[0014] Figure 2 Schematic diagram of the screening device for carbide steel balls Figure 2 ;

[0015] Figure 3 for Figure 1 The enlarged view of point A in the middle;

[0016] In the figure: 1. Shell; 11. Hopper; 2. Outer cylinder; 21. One-way feed port; 22. Large material discharge section; 23. First reinforcement plate; 231. First gear shaft; 3. Middle cylinder; 31. Middle material discharge section; 32. Second reinforcement plate; 321. Second gear shaft; 4. Inner cylinder; 41. Fine material discharge section; 5. Power mechanism; 51. Rotating motor; 52. Main shaft; 53. Driving wheel; 54. First driven wheel; 55. Second driven wheel; 6. Spiral blades. DETAILED DESCRIPTION

[0017] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0018] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0019] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0020] according to Figure 1-3As shown, a screening device for carbide steel balls comprises a shell 1 and an outer cylinder 2, a middle cylinder 3 and an inner cylinder 4 which are arranged in the shell 1 and spaced from the outside to the inside in sequence. A power mechanism 5 for driving the outer cylinder 2, the middle cylinder 3 and the inner cylinder 4 to rotate is arranged outside the shell 1. The outer cylinder 2 and the middle cylinder 3, the middle cylinder 3 and the inner cylinder 4 are all rotatably connected. A plurality of sieve holes are opened on the middle cylinder 3 and the inner cylinder 4. The sieve holes on the middle cylinder 3 are larger than the sieve holes on the inner cylinder 4. A hopper 11 is arranged at one end of the shell 1, a one-way feed port 21 communicated with the hopper 11 is arranged at one end of the outer cylinder 2, the other end of the inner cylinder 4 relative to the hopper 11 extends out of the middle cylinder 3 to form a fine material discharge portion 41, the other end of the middle cylinder 3 relative to the hopper 11 extends out of the outer cylinder 2 to form a medium material discharge portion 31, and the other end of the outer cylinder 2 relative to the hopper 11 is arranged as a large material discharge portion 22. The steel balls placed in the hopper 11 enter the outer cylinder 2 from the one-way feed port 21, and the outer cylinder 2, the middle cylinder 3 and the inner cylinder 4 are all rotated by the power mechanism 5. The largest-sized steel balls remain in the outer cylinder 2, the medium-sized and small-sized steel balls enter the middle cylinder 3, and then the small-sized steel balls enter the inner cylinder 4 from the middle cylinder 3. The screened steel balls are discharged from the large material discharge part 22, the medium material discharge part 31 and the fine material discharge part 41 respectively. Because the screen mesh is separately set and is all set to a rotatable cylindrical shape, in addition, the steel balls are screened out in order from large size to small size, which also avoids the problem of steel balls clogging the drying holes and affecting the screening efficiency.

[0021] according to Figure 1-3 As shown, the outer cylinder 2 is spaced apart from the inner wall of the shell 1, and the space is smaller than the radius of the smallest steel ball. A one-way feed port 21 is provided on the wall of the outer cylinder 2, and the one-way feed port 21 is arranged in a ring, so that the outer cylinder 2 can continuously allow the steel ball to enter the inner cylinder 4 while rotating. Since the spacing between the outer cylinder 2 and the shell 1 is small, it is also avoided that the steel ball will be stuck in the gap. The outer cylinder 2 is arranged obliquely upward from the feeding end to the discharging end, and the generatrix of the outer cylinder 2 is arranged parallel to the generatrix of the middle cylinder 3 and the generatrix of the inner cylinder 4. The inner circumferential surface of the middle cylinder 3, the inner circumferential surface of the middle cylinder 3, and the inner circumferential surface of the inner cylinder 4 are all provided with spiral blades 6.

[0022] according to Figure 1-3As shown, the power mechanism 5 includes a rotating motor 51, a main shaft 52, a driving wheel 53, a first driven wheel 54 and a second driven wheel 55. One end of the main shaft 52 is coaxially fixedly connected to the output shaft of the rotating motor 51, and the other end of the main shaft 52 is coaxially fixedly connected to the inner cylinder 4. The other end of the outer cylinder 2 relative to the large material discharge portion 22 is transmission-connected to the first driven wheel 54, and the other end of the middle cylinder 3 relative to the middle material discharge portion 31 is transmission-connected to the second driven wheel 55. The driving wheel 53 is coaxially fixedly connected to the main shaft 52, and the first driven wheel 54, the second driven wheel 55 and the driving wheel 53 are transmission-connected by belts or chains. A first reinforcing plate 23 is installed on the other end of the outer cylinder 2 relative to the large material discharge portion 22, and a second reinforcing plate 32 is provided on the other end of the middle cylinder 3 relative to the middle material discharge portion 31. The first reinforcing plate 23 and the second reinforcing plate 32 are both arranged in a ring shape, and the inner ring of the first reinforcing plate 23 is slidably connected to the outer ring of the second reinforcing plate 32; a first annular tooth groove is provided on the outer wall of the first reinforcing plate 23, and a second annular tooth groove coaxially arranged with the first annular tooth groove is provided on the outer wall of the second reinforcing plate 32, a first gear shaft 231 coaxially fixedly connected with the first driven wheel 54 is meshed in the first annular tooth groove, and a second gear shaft 321 coaxially fixedly connected with the second driven wheel 55 is meshed in the second annular tooth groove.

[0023] according to Figure 1-3 As shown, the first driven wheel 54, the second driven wheel 55 and the driving wheel 53 are distributed in a triangle and are connected by a belt drive. The outer cylinder 2, the middle cylinder 3 and the inner cylinder 4 can be rotated simultaneously by a rotating motor 51. In addition, the other end of the main shaft 52 relative to the rotating motor 51 penetrates into the inner cylinder 4 and is fixedly connected to the inner wall of the inner cylinder 4 through a star-shaped shaft frame, thereby ensuring the stability of the inner cylinder 4 during rotation.

[0024] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0026] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A screening device for cemented carbide steel balls, characterized in that: The invention comprises a shell (1) and an outer cylinder (2), a middle cylinder (3) and an inner cylinder (4) which are arranged in the shell (1) and are spaced from the outside to the inside in sequence. A power mechanism (5) for driving the outer cylinder (2), the middle cylinder (3) and the inner cylinder (4) to rotate is arranged outside the shell (1). The outer cylinder (2) and the middle cylinder (3), and the middle cylinder (3) and the inner cylinder (4) are all rotatably connected. The middle cylinder (3) and the inner cylinder (4) are each provided with a plurality of sieve holes. The sieve holes on the middle cylinder (3) are larger than the sieve holes on the inner cylinder (4). A hole is provided at one end of the shell (1), a hopper (11) is provided at one end of the outer cylinder (2), a one-way feed port (21) communicating with the hopper (11) is provided, the other end of the inner cylinder (4) relative to the hopper (11) extends out of a middle cylinder (3) to form a fine material discharge portion (41), the other end of the middle cylinder (3) relative to the hopper (11) extends out of the outer cylinder (2) to form a medium material discharge portion (31), and the other end of the outer cylinder (2) relative to the hopper (11) is provided as a large material discharge portion (22).

2. The screening device for cemented carbide steel balls according to claim 1, characterized in that: The outer cylinder (2) and the inner wall of the shell (1) are spaced apart, and the space is smaller than the radius of the smallest steel ball.

3. The screening device for cemented carbide steel balls according to claim 2, characterized in that: The outer cylinder (2) is arranged obliquely upward from the feed end to the discharge end, the generatrix of the outer cylinder (2) is arranged parallel to the generatrix of the middle cylinder (3) and the generatrix of the inner cylinder (4), and spiral blades (6) are arranged on the inner circumferential surface of the middle cylinder (3), the inner circumferential surface of the middle cylinder (3), and the inner circumferential surface of the inner cylinder (4).

4. The screening device for cemented carbide steel balls according to claim 1, characterized in that: The power mechanism (5) comprises a rotating motor (51), a main shaft (52), a driving wheel (53), a first driven wheel (54) and a second driven wheel (55); one end of the main shaft (52) is coaxially fixedly connected to the output shaft of the rotating motor (51); the other end of the main shaft (52) is coaxially fixedly connected to the inner cylinder (4); the other end of the outer cylinder (2) relative to the large material discharge portion (22) is transmission-connected to the first driven wheel (54); the other end of the middle cylinder (3) relative to the middle material discharge portion (31) is transmission-connected to the second driven wheel (55); the driving wheel (53) is coaxially fixedly connected to the main shaft (52); and the first driven wheel (54), the second driven wheel (55) and the driving wheel (53) are transmission-connected via a belt or a chain.

5. The screening device for cemented carbide steel balls according to claim 4, characterized in that: A first reinforcing plate (23) is installed at the other end of the outer cylinder (2) relative to the large material discharge portion (22), and a second reinforcing plate (32) is installed at the other end of the middle cylinder (3) relative to the medium material discharge portion (31), the first reinforcing plate (23) and the second reinforcing plate (32) are both arranged in an annular shape, and the inner ring of the first reinforcing plate (23) is slidably connected to the outer ring of the second reinforcing plate (32); A first annular tooth groove is formed on the outer wall of the first reinforcing plate (23), and a second annular tooth groove is formed on the outer wall of the second reinforcing plate (32) and is coaxially arranged with the first annular tooth groove. A first gear shaft (231) coaxially fixedly connected to the first driven wheel (54) is meshed in the first annular tooth groove, and a second gear shaft (321) coaxially fixedly connected to the second driven wheel (55) is meshed in the second annular tooth groove.

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