Screening machine

Abstract

The utility model discloses a screening machine which comprises a machine frame, a box body fixedly arranged at the top of the machine frame, a horizontal screening drum arranged in the box body, a first supporting pipe and a second supporting pipe, wherein the first supporting pipe and the second supporting pipe are fixedly arranged at the two ends of the screening drum respectively. The first supporting pipe and the second supporting pipe are both coaxial with the screen drum and are rotationally connected with the box in a penetrating mode, a feeding hopper is arranged in the first supporting pipe in a penetrating mode, an inclined discharging groove is formed in the second supporting pipe in a penetrating mode, the discharging groove is rotationally connected with the machine frame, and a discharging hopper is arranged at the bottom of the box. And a first motor in transmission connection with the first supporting pipe is fixedly arranged on the rack. During feeding, shutdown is not needed, and the screen drum continuously rotates for screening, so that the working efficiency is improved. In the discharging process, only the discharging groove needs to be turned over, rotation of the screen drum does not need to be stopped, the screen drum does not need to be turned reversely, and the screen drum is kept to rotate continuously in the working process, so that time is saved, and the working efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of material sorting machinery, in particular to a screening machine. Background Art

[0002] A horizontal screening machine is a commonly used material screening device (such as for sorting grain particles). When in use, first open the cover plate on the material inlet of the screen cylinder of the screening machine, and then inject materials from the feed inlet. Then start the screening machine to rotate the screen cylinder. Small-particle materials fall through the screen holes on the screen cylinder, while large-particle materials remain in the screen cylinder. When no more materials fall through the screen holes, reverse the rotation of the screen cylinder, and discharge the large-particle materials in the screen cylinder through the spiral blades at the end of the screen cylinder. Then stop the machine, add materials, and repeat the above process. Therefore, when adding materials, this screening machine needs to stop, resulting in low working efficiency. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a screening machine to solve the problem that the current horizontal screening machine needs to stop when adding materials, resulting in low working efficiency.

[0004] To solve the above technical problem, the technical solution adopted by the utility model is:

[0005] A screening machine includes a frame, a box body fixedly arranged on the top of the frame, a horizontal screen cylinder arranged inside the box body, and a first support pipe and a second support pipe respectively fixedly arranged at both ends of the screen cylinder; the first support pipe and the second support pipe are both coaxial with the screen cylinder, the first support pipe and the second support pipe are respectively connected to the box body through penetration and rotation, a feed hopper is penetrated and arranged inside the first support pipe, an inclined discharge chute is penetrated and arranged inside the second support pipe, the discharge chute extends into the screen cylinder, the feed hopper is fixedly connected to the frame, the discharge chute is rotationally connected to the frame, the bottom of the box body is a blanking hopper, and a first motor fixedly arranged on the frame is in transmission connection with the first support pipe.

[0006] Furthermore, first support members are arranged at both ends of the box body, the first support pipe and the second support pipe are respectively rotationally connected to the box body through corresponding first support members, the first support member includes a bearing box fixedly connected to the box body, at least three bearings surrounding the first support pipe or the second support pipe are arranged inside the bearing box, the outer ring of the bearing abuts against the corresponding first support pipe or second support pipe, and the inner ring of the bearing is fixedly connected to the corresponding bearing box.

[0007] Furthermore, the discharge chute is rotatably connected to the frame through a second support member provided on the frame. The second support member includes a rotating ring sleeved outside the discharge chute and two semi-circular half-rings buckled together outside the rotating ring. The rotating ring is fixedly connected to the discharge chute. There are three rollers between the half-rings and the rotating ring. The rollers are at least three distributed along the circumferential direction of the rotating ring, and the three rollers are respectively rotatably connected to the corresponding half-rings. A rolling groove for cooperating with the three rollers is provided on the outer circle of the rotating ring. The two half-rings are fixedly connected, and both half-rings are fixedly connected to the frame.

[0008] Furthermore, a sprocket is fixedly provided on one side of the rotating ring, and a second motor fixedly connected to the sprocket is provided on the frame.

[0009] Furthermore, there are at least two types of sieve holes on the sieve cylinder. The aperture of the sieve holes becomes larger along the direction from the first support member to the second support member. The number of the hoppers is the same as the number of types of the aperture of the sieve holes, and the hoppers are respectively located below the sieve holes of the corresponding types.

[0010] Furthermore, a spiral band is fixedly provided on the inner wall of the sieve cylinder. When the sieve cylinder rotates, the spiral band drives the materials in the sieve cylinder to move towards the second support pipe.

[0011] Furthermore, a material deflecting plate is fixedly provided on the inner wall of the sieve cylinder near the second support pipe, and the material deflecting plate is axially consistent with the sieve cylinder.

[0012] Furthermore, a dust removal pipe is provided on the box body, and the dust removal pipe is connected to the inlet of the dust collector.

[0013] The positive effects of the present utility model are as follows:

[0014] 1. The present utility model includes a frame, a box body and a sieve cylinder. One end of the sieve cylinder is provided with a feed hopper, and the other end is provided with a discharge chute that can be flipped. When materials are added from the feed hopper and the sieve cylinder rotates, the small-particle materials fall through the sieve holes on the sieve cylinder and are discharged from the hopper, while the large-particle materials remain inside the sieve cylinder and are then discharged through the flipped discharge chute. When feeding materials in the present utility model, there is no need to stop the machine, and the sieve cylinder continuously rotates for screening, thus improving the working efficiency. When discharging materials, only the discharge chute needs to be flipped, there is no need to stop the rotation of the sieve cylinder, and there is no need to reverse the sieve cylinder. The sieve cylinder continuously rotates during work, thus saving time and further improving the working efficiency.

[0015] 2. A spiral band is provided inside the sieve cylinder, there are multiple types of apertures on the sieve cylinder, and there are multiple hoppers, so that materials of multiple particle sizes can be screened out simultaneously. Description of the Drawings

[0016] Figure 1 is a cross-sectional view of the present utility model when the discharge chute discharges materials;

[0017] Figure 2 is Figure 1 A partial enlarged view of part I in

[0018] Figure 3 is Figure 2 A sectional view taken along line A-A in

[0019] Figure 4 is a schematic diagram of the position of the discharge chute during screening of the present utility model;

[0020] In the figure:

[0021] 1. Feed hopper; 2. First support pipe; 3. First support member; 4. Box body; 5. Sieve cylinder; 6. Spiral band; 7. Material distributing plate; 8. Dust removal pipe; 9. Second support member; 10. Discharge chute; 11. Second motor; 12. Frame; 13. Drop hopper; 14. Clevis bolt; 15. Second support pipe; 16. Bearing housing; 17. Bearing; 18. Half ring; 19. Chain; 20. Support column; 21. First motor; 22. Swivel ring; 23. Roller. Specific embodiments

[0022] Embodiment 1

[0023] As Figures 1 to 4 shown, a screening machine includes a frame 12 formed by welding profiles, a box body 4 fixedly arranged at the top of the frame 12, a horizontal sieve cylinder 5 arranged inside the box body 4, and a first support pipe 2 and a second support pipe 15 respectively fixedly connected to the left and right ends of the sieve cylinder 5. The first support pipe 2 and the second support pipe 15 are both coaxial with the sieve cylinder 5, the first support pipe 2 and the second support pipe 15 are respectively connected to the box body 4 through a through rotation connection, a feed hopper 1 is arranged through the first support pipe 2, an inclined discharge chute 10 is arranged through the second support pipe 15, and the left end of the discharge chute 10 extends into the sieve cylinder 5.

[0024] The feed hopper 1 is fixedly connected to the frame 12, the discharge chute 10 is rotationally connected to the frame 12, the bottom of the box body 4 is a drop hopper 13, a pulley is fixedly connected to the first support pipe 2 near the left end, and a first motor 21 is fixedly arranged on the frame 12 and is connected to the pulley through a V-belt drive.

[0025] Both ends of the box body 4 are provided with first support members 3, and the first support pipe 2 and the second support pipe 15 are respectively rotatably connected to the box body 4 through the corresponding first support members 3. The first support member 3 includes a bearing box 16 fixedly connected to the box body 4 by screws. Three bearings 17 evenly distributed around the corresponding first support pipe 2 or second support pipe 15 are provided in each bearing box 16. The outer ring of the bearing 17 abuts against the corresponding first support pipe 2 or second support pipe 15, and the inner ring of the bearing 17 is fixedly connected to the corresponding bearing box 16 through a precision reamed bolt 14 passing through it.

[0026] The discharge chute 10 is rotatably connected to the frame 12 through a second support member 9 provided on the frame 12. The second support member 9 includes a rotating ring 22 sleeved outside the discharge chute 10 and two semi-circular half rings 18 sleeved outside the rotating ring 22 and buckled together up and down. The rotating ring 22 is fixedly connected to the discharge chute 10. Three rollers 23 are provided between the half ring 18 and the rotating ring 22. The three rollers 23 are evenly distributed along the circumferential direction of the rotating ring 22, and the three rollers 23 are respectively rotatably connected to the corresponding half ring 18. A rolling groove is provided on the outer circle of the rotating ring 22. When the rotating ring 22 rotates, the three rollers 23 all roll in the rolling groove. Support columns 20 are respectively provided through both ends of the two half rings 18, and nuts are screwed on the tops of the support columns 20, so as to fixedly connect the support columns 20 to the two half rings 18, and the lower ends of the support columns 20 are fixedly connected to the frame 12.

[0027] A sprocket is fixedly provided on the outer side of the rotating ring 22, and a second motor 11 in transmission connection with the sprocket is fixedly provided on the frame 12. The second motor 11 is a stepping motor.

[0028] The working process of the present utility model is as follows:

[0029] 1. Screening process

[0030] The discharge chute 10 rotates to the position as shown in Figure 4 , the bottom of the discharge chute 10 faces upward, and the discharge chute 10 is inclined from the lower left to the upper right. The first motor 21 drives the first support pipe 2 to rotate, and then drives the sieve drum 5 to rotate. Materials are added from the feed hopper 1, and the materials slide from the feed hopper 1 into the inside of the sieve drum 5. When the sieve drum 5 rotates, small-particle materials fall through the sieve holes on the sieve drum 5 and are discharged from the blanking hopper 13, and large-particle materials remain inside the sieve drum 5.

[0031] 2. Discharging process

[0032] The second motor 11 drives the rotating ring to rotate 180 degrees, and the discharge chute 10 rotates to the position as shown in Figure 1At the position shown, the bottom of the discharge chute 10 faces downward, and the discharge chute 10 is inclined from the upper left to the lower right. The screen cylinder 5 continues to rotate. Driven by the screen cylinder 5, the materials remaining in the right part of the screen cylinder 5 are turned over in the screen cylinder 5 under the drive of the screen cylinder 5. Some of the materials fall into the discharge chute 10 and then slide out along the discharge chute 10.

[0033] When feeding materials in the utility model, there is no need to stop the machine. The screen cylinder 5 rotates continuously for screening, thus improving the working efficiency. When discharging materials, only need to turn over the discharge chute 10, there is no need to stop the rotation of the screen cylinder 5, and there is no need to reverse the screen cylinder 5. Keep the screen cylinder 5 rotating continuously, thus saving time and further improving the working efficiency.

[0034] Embodiment 2

[0035] The difference between this embodiment and Embodiment 1 is as follows:

[0036] There are three kinds of screen holes on the screen cylinder 5. The aperture of the screen holes becomes larger in the direction from left to right. There are three material receiving hoppers 13, and the three material receiving hoppers 13 are respectively located below the three kinds of screen holes. A spiral belt 6 is fixedly arranged on the inner wall of the screen cylinder 5. When the screen cylinder 5 rotates, the spiral belt 6 drives the materials in the screen cylinder 5 to move from left to right.

[0037] After the materials enter the screen cylinder 5, they move from left to right driven by the spiral belt 6 and are successively screened by the screen holes with small, medium and large apertures, and then fall from the material receiving hoppers 13. Therefore, materials with three particle sizes can be screened out in one device. Together with the one discharged from the discharge chute 10, there are four in total, so the adaptability is stronger and the screening efficiency is improved.

[0038] Embodiment 3

[0039] The difference between this embodiment and Embodiment 2 is as follows:

[0040] A material pushing plate 7 is fixedly arranged on the inner wall of the screen cylinder 5 near the right part, and the material pushing plate 7 is axially consistent with the screen cylinder 5.

[0041] Driven by the screen cylinder 5, the material pushing plate 7 rotates around the discharge chute 10 and lifts the materials in the screen cylinder 5, so that more materials can enter the discharge chute 10 and the discharging efficiency is improved.

[0042] In addition, a dust removal pipe 8 is arranged at the top of the box body 4, and the dust removal pipe 8 is connected to the inlet of the dust collector. Thus, the dust generated during the screening process can be sucked out, making the screened materials cleaner.

[0043] The above-described embodiments are described in detail and specifically, expressing the preferred embodiments of the present utility model. They are only used to illustrate the technical ideas and features of the present utility model. The purpose is to enable those skilled in the art to understand the content of the present utility model and implement it accordingly. However, it is not limited to the present utility model alone. The patent scope of the present utility model cannot be limited only by this embodiment. That is, any equivalent changes or modifications made in accordance with the spirit disclosed by the present utility model, for researchers or technicians in the field, within the structure of the present utility model, local improvements within the system and changes and transformations between subsystems, are still within the patent scope of the present utility model.

Claims

1. A screening machine, characterized in that: The invention comprises a frame (12), a box body (4) fixedly arranged on the top of the frame (12), a horizontal screen drum (5) arranged inside the box body (4), and a first support tube (2) and a second support tube (15) respectively fixedly arranged at two ends of the screen drum (5); the first support tube (2) and the second support tube (15) are both coaxial with the screen drum (5); the first support tube (2) and the second support tube (15) are respectively connected to the box body (4) for rotation; a feed hopper (1) is provided through the first support tube (2); an inclined discharge trough (10) is provided through the second support tube (15); the discharge trough (10) extends into the screen drum (5); the feed hopper (1) is fixedly connected to the frame (12); the discharge trough (10) is connected to the frame (12) for rotation; the bottom of the box body (4) is a drop hopper (13); and a first motor (21) is fixedly arranged on the frame (12) for transmission connection with the first support tube (2).

2. A screening machine according to claim 1, characterized in that: Both ends of the housing (4) are provided with first support members (3); the first support tube (2) and the second support tube (15) are rotatably connected to the housing (4) through the corresponding first support members (3); the first support member (3) comprises a bearing box (16) fixedly connected to the housing (4); at least three bearings (17) surrounding the first support tube (2) or the second support tube (15) are provided in the bearing box (16); the outer ring of the bearing (17) abuts against the corresponding first support tube (2) or the second support tube (15); and the inner ring of the bearing (17) is fixedly connected to the corresponding bearing box (16).

3. A screening machine according to claim 1, characterized in that: The discharge chute (10) is rotatably connected to the frame (12) via a second support member (9) arranged on the frame (12); the second support member (9) comprises a swivel (22) sleeved outside the discharge chute (10) and two semicircular half rings (18) sleeved outside the swivel (22) and buckled together; the swivel (22) is fixedly connected to the discharge chute (10); three rollers (23) are arranged between the half ring (18) and the swivel (22); at least three rollers (23) are distributed along the circumferential direction of the swivel (22); the three rollers (23) are rotatably connected to corresponding half rings (18), and rolling grooves for cooperating with the three rollers (23) are arranged on the outer circumference of the swivel (22); the two half rings (18) are fixedly connected; and both half rings (18) are fixedly connected to the frame (12).

4. A screening machine according to claim 3, characterized in that: A sprocket is fixedly arranged on one side of the rotating ring (22), and a second motor (11) drivingly connected to the sprocket is fixedly arranged on the frame (12).

5. A screening machine according to claim 1, characterized in that: The sieve cylinder (5) has at least two types of sieve holes, the apertures of which increase along the direction from the first support member (3) to the second support member (9), the number of the drop hoppers (13) is the same as the number of types of sieve hole apertures, and the drop hoppers (13) are respectively located below the sieve holes of the corresponding types.

6. A screening machine according to claim 5, characterized in that: A spiral belt (6) is fixedly arranged on the inner wall of the screen drum (5); when the screen drum (5) rotates, the spiral belt (6) drives the material in the screen drum (5) to move towards the second support tube (15).

7. A screening machine according to claim 5, characterized in that: A material-shifting plate (7) is fixedly provided on the inner wall of the sieve cylinder (5) at a position close to the second support tube (15), and the axial direction of the material-shifting plate (7) and the sieve cylinder (5) are consistent.

8. A screening machine according to claim 1, characterized in that: The box body (4) is provided with a dust removal pipe (8), and the dust removal pipe (8) is connected to the inlet of the dust collector.

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