CN112058375A - Screening machine for semiconductor graphite production and processing and screening method thereof - Google Patents

Abstract

The invention discloses a screening machine for producing and processing semiconductor graphite, which comprises a screening box and a crushing box, wherein a feed hopper with an upward opening is fixedly arranged on the top surface of the crushing box; a pushing assembly is arranged on the top surface of the motor box; a crushing assembly is arranged in the crushing box; a rectangular equipment box is fixedly arranged at the rear end of the crushing box, and a driving assembly is arranged in the equipment box; a screening assembly is arranged at the upper part in the screening box, and a screening assembly is arranged at the lower part in the screening box; the semiconductor graphite crushing device is convenient to operate, and solves the problem that the conventional semiconductor graphite crushing efficiency is poor through the crushing assembly and the driving assembly; the problem that the sieve pores are easily blocked when the conventional semiconductor graphite is screened is solved through the screening component and the pushing component; through screening subassembly and vibrations subassembly, solve the lower problem of screening efficiency of current semiconductor graphite sieving mechanism.

Description

Screening machine for semiconductor graphite production and processing and screening method thereof

Technical Field

The invention relates to the technical field of semiconductor graphite production and processing, in particular to a screening machine for semiconductor graphite production and processing and a screening method thereof.

Background

Smelting is a refining technology, which refers to extracting metals in ores by roasting, smelting, electrolysis, using chemical agents and other methods; reducing impurities contained in the metal or increasing certain components in the metal to smelt the metal into the required metal; before graphite is smelted, impurities in the graphite need to be removed, and when the graphite is screened manually, time and labor are wasted, and the screening efficiency of the semiconductor graphite is low; the screened graphite also contains other impurities, so that the quality of the product is influenced, wherein crushing is an important process, however, the particle size range of the crushed particles of the conventional crushing device is large, in the later screening process, a plurality of particles do not meet the production requirement and need to be reprocessed, and the crushing efficiency needs to be improved.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides a screening machine for producing and processing semiconductor graphite.

In order to achieve the purpose, the invention adopts the following technical scheme: a screening machine for semiconductor graphite production and processing comprises a screening box and a crushing box, wherein the screening box is a horizontally arranged rectangular box body, and the bottom of the crushing box is in a rectangular funnel shape; four corners of the bottom surface of the screening box are vertically and fixedly provided with supporting legs; the crushing box is horizontally arranged on the top surface of the screening box, the four corners of the bottom surface of the crushing box are respectively provided with a fixed seat, and the bottom surface of each fixed seat is fixedly connected with the top surface of the screening box; a feed hopper with an upward opening is fixedly arranged on the top surface of the crushing box, a discharge hopper is fixedly arranged in the middle of the bottom end of the crushing box, and the bottom end of the discharge hopper penetrates into the screening box; a motor box is fixedly arranged at the lower part of one side of the screening box, and a first motor and a storage battery are respectively and vertically arranged at two sides in the motor box; a pushing assembly is arranged on the top surface of the motor box; a crushing assembly is arranged in the crushing box; a rectangular equipment box is fixedly arranged at the rear end of the crushing box, and a driving assembly is arranged in the equipment box; a screening assembly is arranged at the upper part in the screening box, and a screening assembly is arranged at the lower part in the screening box; the opening of the feeding hopper and the opening of the discharging hopper are respectively and horizontally fixedly provided with a first screen and a second screen.

Preferably, the crushing assembly comprises a rotating shaft, crushing rollers, crushing teeth and a crushing cone, the rotating shaft is longitudinally and horizontally arranged in the middle and at two sides in the crushing box, first bearings are fixedly arranged on the inner walls of the crushing boxes at two ends of each rotating shaft, and two ends of each rotating shaft are fixedly connected in the inner ring of each first bearing; the shaft body of each rotating shaft is fixedly sleeved with a crushing roller, the surface of each crushing roller is provided with strip-shaped crushing teeth at equal intervals along the length direction, and a plurality of cone-shaped crushing cones are fixedly arranged on the surface of each crushing roller between every two crushing teeth at equal intervals.

Preferably, the driving assembly comprises a second motor, a driving gear and a driven gear, the second motor is transversely and fixedly arranged at the rear end in the equipment box, and the rear end of each rotating shaft penetrates into the equipment box; the rear end of the rotating shaft positioned in the middle of the equipment box is coaxially and fixedly connected with a motor shaft of a second motor through a coupler; the driving gear is fixedly sleeved on the rotating shaft body positioned in the middle of the equipment box, the driven gears are fixedly sleeved on the rotating shaft bodies positioned on two sides of the equipment box, and the driving gear is in meshing transmission with the driven gears on two sides respectively.

Preferably, the screening assembly comprises a first screening box, a push rod, a slide rod, a return spring and screening holes, the first screening box with an upward opening is horizontally and movably arranged at the upper part in the screening box, the push rod and the slide rod are respectively and transversely and fixedly arranged at the middle parts of two sides of the first screening box, the outer ends of the push rod and the slide rod movably penetrate through the outside of the screening box, the return spring is movably sleeved on a slide rod body at one side of the first screening box, and two ends of the return spring are respectively and fixedly connected with one side surface of the first screening box and the inner wall at one side of the screening box; a plurality of circular shape screening holes, every are seted up to the equidistance on the interior bottom surface of first screening box all the fixed screen cloth that is equipped with in the screening hole.

Preferably, the pushing assembly comprises a rotating rod, a rotating disc, a pin column, a connecting rod, a push plate and a hinge base, a second bearing is fixedly arranged in the middle of one side of the top surface of the motor box, the rotating rod is vertically and fixedly arranged in an inner ring of the second bearing, and the rotating rod penetrates into the motor box and is coaxially and fixedly connected with a motor shaft of the first motor through a coupler; the fixed rolling disc that is equipped with of top level of dwang the vertical fixed round pin post that is equipped with in top surface one side of rolling disc movable sleeve is equipped with the one end of connecting rod on the cylinder of round pin post the vertical fixed push pedal that is equipped with in outer end of push rod one side middle part of push pedal is fixed and is equipped with the articulated seat of notch outwards, just the other end of connecting rod is articulated with the round pin axle activity in the articulated seat notch.

Preferably, the screening assembly comprises a second screening box, a third screen and a discharge pipe, the second screening box is horizontally and movably arranged at the lower part in the screening box, and the diameter of the second screening box is larger than that of the first screening box; a rectangular funnel is arranged in the second screening box, a third screen is fixedly installed at an opening at the top of the rectangular funnel, the middle of the third screen is concave, a discharge pipe is vertically and fixedly arranged at the bottom in the rectangular funnel, and the bottom end of the discharge pipe movably penetrates through the bottom surface of the screening box; rectangular boxes are fixedly arranged on the inner bottom surfaces of the screening boxes below the four corners of the bottom surface of the second screening box, and each rectangular box is internally provided with a vibration assembly.

Preferably, the vibration assembly comprises support rods, support springs, a third motor, an incomplete gear and a driven rack, the support rods are vertically and movably arranged on the outer side of each rectangular box, and the top ends of the support rods movably penetrate through the rectangular boxes and are fixedly connected with the bottom surfaces of the second screening boxes; the bottom ends of the supporting rods movably penetrate through the bottom surface of the screening box; a support spring is movably sleeved on the support rod body above each rectangular box, and two ends of the support spring are fixedly connected with the bottom surface of the second screening box and the top surface of the rectangular box respectively; every inboard all vertical level in the rectangle case is equipped with the third motor the motor shaft front end of third motor all fixes the cover and is equipped with incomplete gear the body of rod middle part that the bracing piece is located the rectangle box all cooperates the vertical fixed driven rack that is equipped with of incomplete gear, just incomplete gear all with driven rack meshing transmission.

The invention also provides a screening method of the screening machine for producing and processing the semiconductor graphite, which comprises the following steps:

firstly, a first motor, a second motor and a third motor are respectively and electrically connected with a storage battery through leads, then screened semiconductor graphite is poured into a crushing box from a feed hopper, and larger impurities in the semiconductor graphite are removed through a first screen in the feed hopper;

step two, the driving assembly is controlled to drive each rotating shaft to rotate so as to drive the crushing roller to rotate, the semiconductor graphite is crushed through the crushing teeth and the crushing cone on the crushing roller, and when the particle size of the crushed semiconductor graphite is smaller than the diameter of the mesh of the second screen, the semiconductor graphite falls into the screening box through the second screen in the discharge hopper;

step three, the semiconductor graphite falls into a first screening box in a screening box through a discharge hopper, the pushing assembly is controlled to push the first screening box at the inner end of a push rod to perform transverse reciprocating movement, and the semiconductor graphite with smaller particle size falls into a second screening box through a screening hole through the reciprocating movement of the first screening box;

fourthly, finally screening the semiconductor graphite through a third screen in a second screening box, driving the second screening box to descend and extrude a supporting spring by controlling a vibration assembly, lifting the second screening box under the elastic action of the supporting spring and driving a supporting rod to ascend, and then continuously driving the second screening box to do up-and-down reciprocating motion through an incomplete gear, so that the semiconductor graphite meeting the requirements can fall into a rectangular funnel in the second screening box conveniently, and then the semiconductor graphite is discharged out of the screening box through a discharge pipe;

and step five, after the screening operation is finished, the power supply is turned off.

Compared with the prior art, the invention has the beneficial effects that:

1. through the crushing assembly and the driving assembly, the usage amount of the motor is effectively reduced, and the consumption of electric energy is effectively saved; the crushing effect on the semiconductor graphite is effectively improved through the crushing teeth and the crushing cone on the crushing roller, the time consumption required by the semiconductor graphite during crushing is effectively reduced, and the working efficiency of the semiconductor graphite during crushing is effectively improved; the problem that the crushing efficiency of the conventional semiconductor graphite is poor is solved;

2. the screening component and the pushing component are used for facilitating primary screening of the crushed semiconductor graphite, effectively increasing the falling speed of the semiconductor graphite, facilitating effective prevention of blockage of the screening holes in the screening component by the semiconductor graphite, and solving the problem that the screening holes are easy to be blocked by the existing semiconductor graphite during screening; the screening assembly and the vibration assembly are used for increasing the collection efficiency of the semiconductor graphite; the semiconductor graphite powder is prevented from being bonded on the inner wall of the second filter box, so that the cleaning labor of workers is reduced; the working efficiency of the semiconductor graphite screening is effectively improved; the problem of current semiconductor graphite sieving mechanism's screening efficiency is lower is solved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic cross-sectional front view of the present invention;

FIG. 3 is a schematic top sectional view of the crushing box and the equipment box of the present invention;

FIG. 4 is a schematic view of the structure of the portion A in FIG. 2 according to the present invention;

FIG. 5 is a schematic diagram of a screening method of the present invention;

number in the figure: screening case 1, crushing case 2, feeder hopper 3, play hopper 4, motor case 5, first motor 6, axis of rotation 7, crushing roller 8, broken tooth 9, broken awl 10, equipment box 11, second motor 12, driving gear 13, driven gear 14, first screen cloth 15, second screen cloth 16, first screening box 17, push rod 18, slide bar 19, reset spring 20, screening hole 21, dwang 22, rolling disc 23, round pin post 24, connecting rod 25, push pedal 26, articulated seat 27, second screening box 28, third screen cloth 29, discharging pipe 30, rectangular box 31, bracing piece 32, supporting spring 33, third motor 34, incomplete gear 35, driven rack 36.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example 1: referring to fig. 1-4, the screening machine for semiconductor graphite production and processing comprises a screening box 1 and a crushing box 2, wherein the screening box 1 is a horizontally arranged rectangular box body, and the bottom of the crushing box 2 is in a rectangular funnel shape; four corners of the bottom surface of the screening box 1 are vertically and fixedly provided with supporting legs; the crushing box 2 is horizontally arranged on the top surface of the screening box 1, the four corners of the bottom surface of the crushing box 2 are respectively provided with a fixed seat, and the bottom surface of each fixed seat is fixedly connected with the top surface of the screening box 1; a feed hopper 3 with an upward opening is fixedly arranged on the top surface of the crushing box 2, a discharge hopper 4 is fixedly arranged in the middle of the bottom end of the crushing box 2, and the bottom end of the discharge hopper 4 penetrates into the screening box 1; a motor box 5 is fixedly arranged at the lower part of one side of the screening box 1, a first motor 6 and a storage battery are respectively and vertically arranged at two sides in the motor box 5, and the model of the first motor 6 is YCTL 160-4A; a pushing assembly is arranged on the top surface of the motor box 5; a crushing assembly is arranged in the crushing box 2; a rectangular equipment box 11 is fixedly arranged at the rear end of the crushing box 2, and a driving assembly is arranged in the equipment box 11; a screening assembly is arranged at the upper part in the screening box 1, and a screening assembly is arranged at the lower part in the screening box 1; a first screen 15 and a second screen 16 are respectively and horizontally fixed in the openings of the feed hopper 3 and the discharge hopper 4.

In the invention, the crushing assembly comprises a rotating shaft 7, crushing rollers 8, crushing teeth 9 and a crushing cone 10, the rotating shaft 7 is longitudinally and horizontally arranged in the middle and at two sides in the crushing box 2, a first bearing is fixedly arranged on the inner wall of the crushing box 2 at two ends of each rotating shaft 7, and two ends of each rotating shaft 7 are fixedly connected in the inner ring of the first bearing; a crushing roller 8 is fixedly sleeved on the shaft body of each rotating shaft 7, strip-shaped crushing teeth 9 are equidistantly arranged on the surface of each crushing roller 8 along the length direction, and a plurality of cone-shaped crushing cones 10 are fixedly arranged on the surface of each crushing roller 8 between every two adjacent crushing teeth 9 at equal intervals; the driving assembly comprises a second motor 12, a driving gear 13 and a driven gear 14, wherein the model of the second motor 12 is T63B 4; a second motor 12 is transversely and fixedly arranged at the rear end in the equipment box 11, and the rear end of each rotating shaft 7 penetrates into the equipment box 11; the rear end of the rotating shaft 7 positioned in the middle of the equipment box 11 is coaxially and fixedly connected with a motor shaft of a second motor 12 through a coupler; the driving gear 13 is fixedly sleeved on the shaft body of the rotating shaft 7 positioned in the middle of the equipment box 11, the driven gears 14 are fixedly sleeved on the shaft bodies of the rotating shafts 7 positioned on two sides of the equipment box 11, and the driving gear 13 is respectively in meshed transmission with the driven gears 14 on two sides.

In the invention, the screening assembly comprises a first screening box 17, a push rod 18, a slide rod 19, a return spring 20 and screening holes 21, the first screening box 17 with an upward opening is horizontally and movably arranged at the upper part in the screening box 1, the push rod 18 and the slide rod 19 are respectively and transversely and fixedly arranged at the middle parts of two sides of the first screening box 17, the outer ends of the push rod 18 and the slide rod 19 movably penetrate out of the screening box 1, the return spring 20 is movably sleeved on a rod body of the slide rod 19 at one side of the first screening box 17, two ends of the return spring 20 are respectively and fixedly connected with one side surface of the first screening box 17 and the inner wall at one side of the screening box 1, and the stability of the first screening box 17 during transverse movement is improved conveniently through the return spring 20; a plurality of circular screening holes 21 are equidistantly formed in the inner bottom surface of the first screening box 17, and a screen is fixedly arranged in each screening hole 21; the pushing assembly comprises a rotating rod 22, a rotating disc 23, a pin 24, a connecting rod 25, a push plate 26 and a hinge base 27, a second bearing is fixedly arranged in the middle of one side of the top surface of the motor box 5, the rotating rod 22 is vertically and fixedly arranged in the inner ring of the second bearing, and the rotating rod 22 penetrates through the motor box 5 and is coaxially and fixedly connected with a motor shaft of the first motor 6 through a coupler; the fixed rolling disc 23 that is equipped with of top level of dwang 22 the vertical fixed round pin post 24 that is equipped with in top surface one side of rolling disc 23 the movable sleeve is equipped with the one end of connecting rod 25 on the cylinder of round pin post 24 the vertical fixed push pedal 26 that is equipped with in outer end of push rod 18 the fixed articulated seat 27 that is equipped with the notch outwards in one side middle part of push pedal 26, just the other end of connecting rod 25 is articulated with articulated seat 27 notch intraoral round pin axle activity.

In the present invention, the screen assembly includes a second screen box 28, a third screen 29 and a discharge pipe 30, the second screen box 28 is horizontally movably provided in the lower portion of the inside of the screen box 1, and the diameter of the second screen box 28 is larger than that of the first screen box 17; a rectangular funnel is arranged in the second screening box 28, a third screen 29 is fixedly installed at an opening at the top of the rectangular funnel, the middle of the third screen 29 is concave, a discharge pipe 30 is vertically and fixedly arranged at the bottom in the rectangular funnel, and the bottom end of the discharge pipe 30 movably penetrates through the bottom surface of the screening box 1; rectangular boxes 31 are fixedly arranged on the inner bottom surfaces of the screening boxes 1 below the four corners of the bottom surface of the second screening box 28, and a vibration assembly is arranged in each rectangular box 31; the vibration component comprises a support rod 32, a support spring 33, a third motor 34, an incomplete gear 35 and a driven rack 36, wherein the model of the third motor 34 is YZS-20-2; a support rod 32 is vertically and movably arranged on the outer side in each rectangular box 31, and the top end of each support rod 32 movably penetrates out of the rectangular box 31 and is fixedly connected with the bottom surface of the second screening box 28; the bottom ends of the support rods 32 movably penetrate through the bottom surface of the screening box 1; a support spring 33 is movably sleeved on the rod body of the support rod 32 above each rectangular box 31, and two ends of the support spring 33 are fixedly connected with the bottom surface of the second screening box 28 and the top surface of the rectangular box 31 respectively; a third motor 34 is longitudinally and horizontally arranged on the inner side of each rectangular box 31, an incomplete gear 35 is fixedly sleeved at the front end of a motor shaft of each third motor 34, a driven rack 36 is vertically and fixedly arranged in the middle of a rod body of the support rod 32 positioned in the rectangular box 31 in a manner of being matched with the incomplete gear 35, and the incomplete gear 35 is in meshing transmission with the driven rack 36.

Example 2: referring to fig. 5, in this embodiment, the present invention further provides a screening method of a screening machine for semiconductor graphite production and processing, including the following steps:

firstly, respectively and electrically connecting a first motor 6, a second motor 12 and a third motor 34 with a storage battery through leads, pouring screened semiconductor graphite into a crushing box 2 from a feed hopper 3, and removing larger impurities in the semiconductor graphite through a first screen 15 in the feed hopper 3;

step two, a driving gear 13 on the shaft body of a rotating shaft 7 in the middle is driven to rotate by controlling a second motor 12, the rotating shafts 7 on two sides are driven to rotate by the meshing transmission of the driving gear 13 and driven gears 14 on two sides, a crushing roller 8 is driven to rotate by the rotation of each rotating shaft 7, semiconductor graphite is crushed by crushing teeth 9 and crushing cones 10 on the crushing roller 8, and when the particle size of the crushed semiconductor graphite is smaller than the diameter of meshes of a second screen 16, the semiconductor graphite falls into a screening box 1 through the second screen 16 in a discharge hopper 4;

step three, the semiconductor graphite falls into a first screening box 17 in a screening box 1 through a discharge hopper 4, a rotating rod 22 is driven to rotate by controlling a first motor 6, a pin 24 on the top surface of a rotating disc 23 is driven to rotate by the rotation of the rotating rod 22, a connecting rod 25 is driven to reciprocate to push a push plate 26 to move transversely by the circumferential motion of the rotating disc 23 of the pin 24, the first screening box 17 at the inner end of a push rod 18 is pushed to move transversely and reciprocally by the transverse movement of the push rod 26, and the semiconductor graphite with smaller particle size falls into a second screening box 18 through a screening hole 21 by the reciprocating movement of the first screening box 17;

fourthly, finally screening the semiconductor graphite through a third screen 29 in the second screening box 18, controlling a third motor 34 to drive an incomplete gear 35 to rotate, driving a support rod 32 to move downwards through meshing transmission of the incomplete gear 35 and a driven rack 36, driving a second screening box 28 to descend and extrude a support spring 33 through descending of the support rod 32, enabling the second screening box 28 to ascend under the elastic action of the support spring 33 and drive the support rod 32 to ascend through continuous transmission of the incomplete gear 35 when the incomplete gear 35 rotates to one side without teeth, enabling the semiconductor graphite reaching the requirement to fall into a rectangular funnel in the second screening box 18 conveniently, and then discharging the semiconductor graphite out of the screening box 1 through a discharge pipe 30;

and step five, after the screening operation is finished, the power supply is turned off.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (8)

1. The utility model provides a sieve separator is used in semiconductor graphite production and processing, includes screening case (1) and broken case (2), its characterized in that: the screening box (1) is a rectangular box body which is horizontally arranged, and the bottom of the crushing box (2) is in a rectangular funnel shape; four corners of the bottom surface of the screening box (1) are vertically and fixedly provided with supporting legs; the crushing box (2) is horizontally arranged on the top surface of the screening box (1), four corners of the bottom surface of the crushing box (2) are respectively provided with a fixed seat, and the bottom surface of each fixed seat is fixedly connected with the top surface of the screening box (1); a feed hopper (3) with an upward opening is fixedly arranged on the top surface of the crushing box (2), a discharge hopper (4) is fixedly arranged in the middle of the bottom end of the crushing box (2), and the bottom end of the discharge hopper (4) penetrates into the screening box (1); a motor box (5) is fixedly arranged at the lower part of one side of the screening box (1), and a first motor (6) and a storage battery are respectively and vertically arranged at two sides in the motor box (5); a pushing assembly is arranged on the top surface of the motor box (5); a crushing assembly is arranged in the crushing box (2); a rectangular equipment box (11) is fixedly arranged at the rear end of the crushing box (2), and a driving assembly is arranged in the equipment box (11); a screening component is arranged at the upper part in the screening box (1), and a screening component is arranged at the lower part in the screening box (1); a first screen (15) and a second screen (16) are respectively and horizontally fixed in openings of the feed hopper (3) and the discharge hopper (4).

2. The screening machine for semiconductor graphite production and processing according to claim 1, wherein: the crushing assembly comprises a rotating shaft (7), crushing rollers (8), crushing teeth (9) and a crushing cone (10), the rotating shaft (7) is longitudinally and horizontally arranged in the middle and at two sides of the inside of the crushing box (2), first bearings are fixedly arranged on the inner walls of the crushing boxes (2) at two ends of each rotating shaft (7), and two ends of each rotating shaft (7) are fixedly connected in the inner ring of each first bearing; the shaft body of each rotating shaft (7) is fixedly sleeved with a crushing roller (8), strip-shaped crushing teeth (9) are arranged on the surface of each crushing roller (8) at equal intervals along the length direction, and a plurality of cone-shaped crushing cones (10) are fixedly arranged on the surface of each crushing roller (8) between every two crushing teeth (9) at equal intervals.

3. The screening machine for semiconductor graphite production and processing according to claim 2, wherein: the driving assembly comprises a second motor (12), a driving gear (13) and a driven gear (14), the second motor (12) is transversely and fixedly arranged at the rear end in the equipment box (11), and the rear end of each rotating shaft (7) penetrates into the equipment box (11); the rear end of a rotating shaft (7) positioned in the middle of the inside of the equipment box (11) is coaxially and fixedly connected with a motor shaft of a second motor (12) through a coupler; the driving gear (13) is fixedly sleeved on the shaft body of the rotating shaft (7) positioned in the middle of the inside of the equipment box (11), the driven gears (14) are fixedly sleeved on the shaft bodies of the rotating shaft (7) positioned on two sides of the inside of the equipment box (11), and the driving gear (13) is respectively in meshing transmission with the driven gears (14) on two sides.

4. The screening machine for semiconductor graphite production and processing according to claim 1, wherein: the screening assembly comprises a first screening box (17), a push rod (18), a sliding rod (19), a return spring (20) and screening holes (21), the first screening box (17) with an upward opening is horizontally and movably arranged at the upper part in the screening box (1), the push rod (18) and the sliding rod (19) are transversely and fixedly arranged in the middle of two sides of the first screening box (17) respectively, the outer ends of the push rod (18) and the sliding rod (19) movably penetrate out of the screening box (1), the return spring (20) is movably sleeved on a rod body of the sliding rod (19) at one side of the first screening box (17), and two ends of the return spring (20) are fixedly connected with one side surface of the first screening box (17) and the inner wall at one side of the screening box (1) respectively; a plurality of circular shape screening holes (21) are seted up to the equidistance on the interior bottom surface of first screening box (17), every all fixed screen cloth that is equipped with in screening hole (21).

5. The screening machine for semiconductor graphite production and processing according to claim 4, wherein: the pushing assembly comprises a rotating rod (22), a rotating disc (23), a pin column (24), a connecting rod (25), a push plate (26) and a hinge base (27), a second bearing is fixedly arranged in the middle of one side of the top surface of the motor box (5), the rotating rod (22) is vertically and fixedly arranged in the inner ring of the second bearing, and the rotating rod (22) penetrates into the motor box (5) and is coaxially and fixedly connected with a motor shaft of the first motor (6) through a coupler; the fixed rolling disc (23) that is equipped with of top level of dwang (22) the vertical fixed round pin post (24) that is equipped with in top surface one side of rolling disc (23) the movable sleeve is equipped with the one end of connecting rod (25) on the cylinder of round pin post (24) the vertical fixed push pedal (26) that is equipped with in outer end of push pedal (18) one side middle part of push pedal (26) is fixed and is equipped with notch articulated seat (27) outwards, just the other end of connecting rod (25) is articulated with articulated seat (27) intraoral round pin axle activity of notch.

6. The screening machine for semiconductor graphite production and processing according to claim 1, wherein: the screening assembly comprises a second screening box (28), a third screen (29) and a discharge pipe (30), the second screening box (28) is horizontally and movably arranged at the lower part in the screening box (1), and the diameter of the second screening box (28) is larger than that of the first screening box (17); a rectangular funnel is arranged in the second screening box (28), a third screen (29) is fixedly installed at an opening at the top of the rectangular funnel, the middle of the third screen (29) is concave, a discharge pipe (30) is vertically and fixedly arranged at the bottom in the rectangular funnel, and the bottom end of the discharge pipe (30) movably penetrates through the bottom surface of the screening box (1); all fixedly on the screening case (1) of second screening box (28) bottom surface four corners below the bottom surface on the bottom surface rectangle box (31), every all be equipped with vibrations subassembly in rectangle box (31).

7. The screening machine for semiconductor graphite production and processing according to claim 6, wherein: the vibration assembly comprises support rods (32), support springs (33), a third motor (34), an incomplete gear (35) and a driven rack (36), the support rods (32) are vertically and movably arranged on the outer side in each rectangular box (31), and the top ends of the support rods (32) movably penetrate out of the rectangular boxes (31) and are fixedly connected with the bottom surfaces of the second screening boxes (28); the bottom ends of the supporting rods (32) movably penetrate through the bottom surface of the screening box (1); a support spring (33) is movably sleeved on the rod body of the support rod (32) above each rectangular box (31), and two ends of the support spring (33) are fixedly connected with the bottom surface of the second screening box (28) and the top surface of the rectangular box (31) respectively; every inboard in rectangle case (31) is all vertically the level be equipped with third motor (34) the motor shaft front end of third motor (34) is all fixed the cover and is equipped with incomplete gear (35) body of rod middle part that bracing piece (32) are located rectangle box (31) all cooperates incomplete gear (35) vertical fixed driven rack (36) of being equipped with, just incomplete gear (35) all with driven rack (36) meshing transmission.

8. The screening method of the screening machine for the production and processing of semiconductor graphite according to any one of claims 1 to 7, characterized by comprising the steps of:

firstly, a first motor (6), a second motor (12) and a third motor (34) are respectively and electrically connected with a storage battery through leads, then screened semiconductor graphite is poured into a crushing box (2) from a feed hopper (3), and larger impurities in the semiconductor graphite are removed through a first screen (15) in the feed hopper (3);

secondly, driving each rotating shaft (7) to rotate by controlling a driving assembly to drive a crushing roller (8) to rotate, crushing the semiconductor graphite by crushing teeth (9) and crushing cones (10) on the crushing roller (8), and when the particle size of the crushed semiconductor graphite is smaller than the diameter of meshes of a second screen (16), dropping the semiconductor graphite into a screening box (1) through the second screen (16) in a discharge hopper (4);

step three, the semiconductor graphite falls into a first screening box (17) in a screening box (1) through a discharge hopper (4), the pushing assembly is controlled to push the first screening box (17) at the inner end of a push rod (18) to perform transverse reciprocating movement, and the semiconductor graphite with smaller particle size falls into a second screening box (18) through a screening hole (21) through the reciprocating movement of the first screening box (17);

fourthly, finally screening the semiconductor graphite through a third screen (29) in the second screening box (18), driving the second screening box (28) to descend and extrude a supporting spring (33) by controlling a vibration assembly, lifting the second screening box (28) under the elastic action of the supporting spring (33) and driving a supporting rod (32) to ascend, and then continuously transmitting through an incomplete gear (35) to enable the second screening box (28) to reciprocate up and down, so that the semiconductor graphite meeting the requirement falls into a rectangular funnel in the second screening box (18), and then discharging the semiconductor graphite out of the screening box (1) through a discharging pipe (30);

and step five, after the screening operation is finished, the power supply is turned off.

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