White corundum multilayer screening device

Abstract

The utility model is suitable for the technical field of white corundum screening, and provides a white corundum multi-layer screening device which comprises a base, a plurality of screening shells which are arranged in a stacked mode are arranged on the base, screens for screening white corundum micro powder are arranged in the screening shells, built-in shells are arranged in the screening shells, and the built-in shells are arranged in the screening shells. A plurality of supporting plates are arranged between the outer surface of the built-in shell and the inner wall of the screening shell, a rotating shaft is rotationally connected to the lower surface of the built-in shell, a plurality of follow-up plates arranged in a circumferential array mode are arranged on the outer surface of the rotating shaft, and nylon brushes making contact with the surface of the screening net are arranged on the lower surfaces of the follow-up plates. According to the white corundum micro-powder screening device, the problem that part of white corundum micro-powder is accumulated together is avoided as much as possible, the white corundum micro-powder screening efficiency is guaranteed, and the time spent on white corundum micro-powder screening is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of white corundum screening, and more specifically, to a white corundum multi-layer screening device. Background Art

[0002] White corundum is made of industrial alumina powder, which is melted at a high temperature of more than 2000 degrees in an electric arc and then cooled. It is crushed and shaped, and then magnetically separated to remove iron. However, the particle size of the white corundum powder is inconsistent after magnetic separation, which will affect the use of the white corundum powder. Therefore, a multi-layer screening device is needed to screen the white corundum powder into a variety of particle sizes for the manufacture of ceramics, resin-bonded abrasives, as well as grinding, polishing, sandblasting, precision casting (special corundum for precision casting), etc.

[0003] However, the existing multi-layer screening device has the following problems when screening white corundum micropowder: when the existing white corundum micropowder is poured into the multi-layer screening device, it usually piles up. In this way, when the multi-layer screening device screens the piled white corundum micropowder, it is impossible to quickly separate the white corundum micropowder. It takes a certain amount of time to shake off the piled white corundum micropowder before the white corundum micropowder can be effectively screened, which affects the screening efficiency and speed of the white corundum micropowder. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a white corundum multi-layer screening device which avoids the problem of some white corundum powders piling up as much as possible, ensures the screening efficiency of the white corundum powders, and reduces the time required for screening the white corundum powders.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A white corundum multi-layer screening device comprises a base, a plurality of stacked screening shells are arranged on the base, a screen for screening white corundum powder is arranged in the screening shell, an inner shell is arranged in the screening shell, a plurality of support plates are arranged between the outer surface of the inner shell and the inner wall of the screening shell, a rotating shaft is rotatably connected to the lower surface of the inner shell, a plurality of follower plates arranged in a circular array are arranged on the outer surface of the rotating shaft, a nylon brush in contact with the screen surface is arranged on the lower surface of the follower plate, the upper end of the rotating shaft rotates and penetrates into the inner shell, and a trigger mechanism for controlling the rotating shaft to rotate back and forth is arranged on the upper end of the rotating shaft.

[0007] The utility model is further configured as follows: a vibration motor is arranged on the lower side of the bottom screening shell, a plurality of dampers are arranged between the lower surface of the bottom screening shell and the upper surface of the base, a top cover is arranged on the top screening shell, a feeding port is arranged on the top cover, and a discharge port for discharging materials is arranged on the outer surface of the screening shell.

[0008] The utility model is further configured as follows: the upper side of the built-in shell is conical.

[0009] The utility model is further configured as follows: the trigger mechanism includes a gear, the gear sleeve is arranged on the outer surface of one end of the rotating shaft located in the built-in shell, the side of the gear is meshingly connected with a rack, a push rod is arranged on the right side of the rack, and the other end of the push rod slides through the outer surface of the built-in shell and the screening shell respectively.

[0010] The utility model is further configured as follows: a contact head is arranged on one end of the push rod outside the screening shell, and a return spring movably sleeved on the outer surface of the push rod is arranged between the contact head and the outer surface of the screening shell.

[0011] The utility model is further configured as follows: an extrusion block is arranged on the outer side of the screening shell, the shape of the extrusion block is a right triangle, the contact head contacts and slides with the inclined surface of the extrusion block, an adjustable telescopic rod is arranged on the lower surface of the extrusion block, and the lower side of the adjustable telescopic rod is arranged on the outer surface of the base.

[0012] The utility model is further configured as follows: the adjustable telescopic rod includes a connecting rod, the upper end of the connecting rod is arranged on the lower surface of the extrusion block, the lower end of the connecting rod is provided with a mounting rod, the lower end of the mounting rod is also mounted on the outer surface of the base through a bolt, the lower surface of the connecting rod is rotatably connected with a screw rod, the upper surface of the mounting rod is provided with a threaded groove threadedly connected to the screw rod, the outer surface of the connecting rod is sleeved with a sleeve plate, the lower surface of the sleeve plate is provided with a limiting rod, the upper surface of the mounting rod is provided with a sliding hole, the lower end of the limiting rod extends into the sliding hole, and slides in the sliding hole.

[0013] The advantages of the utility model are:

[0014] The utility model uses a nylon brush to brush back and forth on the screen, so the nylon brush can push away the white corundum micro-powder that falls on the screen, thereby avoiding the problem of some white corundum micro-powder piling up as much as possible, ensuring the screening efficiency of the white corundum micro-powder, and reducing the time required for screening the white corundum micro-powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of a white corundum multi-layer screening device of the utility model;

[0016] Figure 2 This is a schematic diagram of the connection structure of the screening shell of the utility model;

[0017] Figure 3 This is a schematic cross-sectional view of the built-in housing of the utility model;

[0018] Figure 4 for Figure 1 Enlarged view of point A in the middle;

[0019] Figure 5 for Figure 1 Enlarged view of point B in the middle.

[0020] In the figure: 1. base; 2. screening shell; 3. damper; 4. vibration motor; 5. discharge port; 6. top cover; 7. screen; 8. trigger mechanism; 801. gear; 802. rack; 803. push rod; 804. contact head; 805. reset spring; 806. extrusion block; 9. adjustable telescopic rod; 901. connecting rod; 902. mounting rod; 903. screw rod; 904. sleeve plate; 905. limiting rod; 10. built-in shell; 11. support plate; 12. rotating shaft; 13. follower plate; 14. nylon brush. DETAILED DESCRIPTION

[0021] See also Figure 1-5 , the utility model provides the following technical solutions:

[0022] Specifically, it refers to a white corundum multi-layer screening device, including a base 1, on which a plurality of stacked screening shells 2 are arranged, two adjacent screening shells 2 are fixed by bolts, a vibration motor 4 is arranged on the lower side of the bottom screening shell 2, a plurality of dampers 3 are arranged between the lower surface of the bottom screening shell 2 and the upper surface of the base 1, the screening shell 2 is in the shape of a ring, a screen 7 for screening white corundum micropowder is arranged in the screening shell 2, and the mesh apertures of the plurality of screens 7 from top to bottom gradually become smaller, a top cover 6 is arranged on the top screening shell 2, a feeding port is arranged on the top cover 6, and a discharge port 5 for discharging is arranged on the outer surface of the screening shell 2. When in use, the white corundum micropowder is fed into the top screening shell 2 through the feeding port on the top cover 6, and then the vibration motor 4 is started, so that the plurality of screening shells 2 vibrate, so that the white corundum micropowder passes through the plurality of screens 7 to achieve the purpose of multi-layer screening.

[0023] A built-in shell 10 is provided in the screening shell 2, and a plurality of support plates 11 are provided between the outer surface of the built-in shell 10 and the inner wall of the screening shell 2. The lower surface of the built-in shell 10 is rotatably connected with a rotating shaft 12, and the outer surface of the rotating shaft 12 is provided with a plurality of follower plates 13 arranged in a circular array, and the lower surface of the follower plate 13 is provided with a nylon brush 14 in contact with the surface of the screen 7. The upper end of the rotating shaft 12 rotates and penetrates into the built-in shell 10, and the upper end of the rotating shaft 12 is provided with a trigger mechanism 8 for controlling the rotating shaft 12 to rotate back and forth. Therefore, when in use, the rotating shaft 12 is controlled to rotate back and forth by the trigger mechanism 8, so that the rotating shaft 12 can drive the follower plate 13 to rotate back and forth, so that the nylon brush 14 brushes back and forth on the screen 7, so that the nylon brush 14 can be used to brush away the white corundum powder dropped on the screen 7, thereby avoiding the problem of some white corundum powder piling up in one piece as much as possible, ensuring the screening efficiency of the white corundum powder, and reducing the time required for screening the white corundum powder.

[0024] The upper side of the inner housing 10 is conical, so that the white fused alumina powder falling on the inner housing 10 can slide out along the inclined surface at the top of the inner housing 10, which can avoid as much as possible the problem that too much white fused alumina powder falls on the inner housing 10 and affects the screening effect of the white fused alumina powder.

[0025] The triggering mechanism 8 includes a gear 801 sleeved on the outer surface of one end of the rotating shaft 12 located in the inner housing 10. A rack 802 is meshed and connected to the side surface of the gear 801. A push rod 803 is arranged on the right side of the rack 802. The other end of the push rod 803 respectively slides through the outer surfaces of the inner housing 10 and the screening housing 2. A contact head 804 is arranged at one end of the push rod 803 located outside the screening housing 2. A return spring 805 sleeved on the outer surface of the push rod 803 is arranged between the contact head 804 and the outer surface of the screening housing 2. When the return spring 805 is not squeezed, the return spring 805 will form a thrust on the contact head 804, so that the initial position of the contact head 804 is on the side away from the screening housing 2.

[0026] An extrusion block 806 is arranged outside the screening housing 2. The shape of the extrusion block 806 is a right triangle. The contact head 804 contacts and slides on the inclined surface of the extrusion block 806. An adjustable telescopic rod 9 is arranged on the lower surface of the extrusion block 806. The lower side of the adjustable telescopic rod 9 is arranged on the outer surface of the base 1. When the vibration motor 4 is started, the distance between the screening housing 2 and the base 1 will change. Therefore, the screening housing 2 floats up and down on the base 1, and the contact head 804 moves synchronously with the screening housing 2. Since the position of the extrusion block 806 remains unchanged, the inclined surface of the extrusion block 806 will form an extrusion on the contact head 804 during the movement of the contact head 804, so that the contact head 804 displaces towards the side close to the screening housing 2. At the same time, the return spring 805 is stressed and contracts. Therefore, the push rod 803 pushes the rack 802 to move, and the rack 802 drives the gear 801 to rotate synchronously, and the rotating shaft 12 rotates synchronously with the gear 801.

[0027] The adjustable telescopic rod 9 includes a connecting rod 901. The upper end of the connecting rod 901 is arranged on the lower surface of the extrusion block 806. The lower end of the connecting rod 901 is provided with a mounting rod 902. The lower end of the mounting rod 902 is also installed on the outer surface of the base 1 by bolts. A screw rod 903 is rotatably connected to the lower surface of the connecting rod 901. A threaded groove threadedly connected to the screw rod 903 is opened on the upper surface of the mounting rod 902. Therefore, by rotating the screw rod 903, the screw rod 903 drives the connecting rod 901 to move up or down under the transmission of the threaded groove, so as to adjust the position of the extrusion block 806, so that the extrusion block 806 can be applicable to screening housings 2 of different heights.

[0028] A sleeve plate 904 is sleeved on the outer surface of the connecting rod 901. A limiting rod 905 is arranged on the lower surface of the sleeve plate 904. A sliding hole is formed in the upper surface of the mounting rod 902. The lower end of the limiting rod 905 extends into the sliding hole and slides in the sliding hole. Therefore, the connecting rod 901 is restricted by the limiting rod 905, so that the connecting rod 901 can only move up and down and cannot rotate, ensuring the use effect of the extrusion block 806.

[0029] The working principle of the white fused alumina multi-layer screening device provided by the present utility model is as follows: The white fused alumina micropowder is put into the top screening housing 2 through the feeding port on the top cover 6. At this time, the vibration motor 4 is started, so that a plurality of screening housings 2 vibrate. The screening housings 2 float up and down on the base 1, and the contact head 804 moves synchronously with the screening housing 2. Since the position of the extrusion block 806 remains unchanged, the inclined surface of the extrusion block 806 will squeeze the contact head 804 during the movement of the contact head 804, so that the contact head 804 displaces toward the side close to the screening housing 2. At the same time, the return spring 805 is stressed and contracts. Therefore, the push rod 803 pushes the rack 802 to move, and the rack 802 synchronously drives the gear 801 to rotate, and the rotating shaft 12 rotates synchronously with the gear 801. The rotating shaft 12 can drive the follower plate 13 to rotate back and forth, so that the nylon brush 14 brushes back and forth on the screen 7.

Claims

1. A white fused alumina multi-layer screening device, comprising a base (1), wherein a plurality of stacked screening shells (2) are arranged on the base (1), and a screen mesh (7) for screening white fused alumina fine powder is arranged in the screening shell (2), and it is characterized in that: Inside the screening housing (2), there is an inner housing (10). Between the outer surface of the inner housing (10) and the inner wall of the screening housing (2), there are multiple support plates (11). The lower surface of the inner housing (10) is rotatably connected to a rotating shaft (12). On the outer surface of the rotating shaft (12), there are multiple follower plates (13) arranged in a circumferential array. On the lower surface of the follower plate (13), there is a nylon brush (14) that contacts the surface of the sieve mesh (7). The upper end of the rotating shaft (12) rotatably penetrates into the inner housing (10), and at the upper end of the rotating shaft (12), there is a triggering mechanism (8) for controlling the back-and-forth rotation of the rotating shaft (12).

2. The white fused alumina multi-layer screening device according to claim 1, characterized in that: At the lower side of the bottom screening housing (2), there is a vibration motor (4). Between the lower surface of the bottom screening housing (2) and the upper surface of the base (1), there are multiple dampers (3). On the top screening housing (2), there is a top cover (6). On the top cover (6), there is a feeding port. On the outer surface of the screening housing (2), there is a discharge port (5) for discharging materials.

3. The white fused alumina multi-layer screening device according to claim 1, characterized in that: The upper side of the inner housing (10) is conical.

4. A white fused alumina multi-layer screening device according to claim 1, characterized in that: The triggering mechanism (8) includes a gear (801). The gear (801) is sleeved on the outer surface of one end of the rotating shaft (12) located inside the inner housing (10). The side of the gear (801) is meshed with a rack (802). On the right side of the rack (802), there is a push rod (803). The other end of the push rod (803) respectively slides through the outer surfaces of the inner housing (10) and the screening housing (2).

5. The white fused alumina multi-layer screening device according to claim 4, characterized in that: At one end of the push rod (803) located outside the screening housing (2), there is a contact head (804). Between the contact head (804) and the outer surface of the screening housing (2), there is a return spring (805) movably sleeved on the outer surface of the push rod (803).

6. The white fused alumina multi-layer screening device according to claim 5, characterized in that: On the outer side of the screening housing (2), there is an extrusion block (806). The shape of the extrusion block (806) is a right triangle. The contact head (804) contacts and slides on the inclined surface of the extrusion block (806).

7. The white fused alumina multi-layer screening device according to claim 6, characterized in that: On the lower surface of the extrusion block (806), there is an adjustable telescopic rod (9). The lower side of the adjustable telescopic rod (9) is arranged on the outer surface of the base (1).

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