Rotary self-cleaning rake

Abstract

The utility model provides a rotary self-cleaning rake which comprises a shaft body and a shifting sleeve, the shaft body is fixedly arranged on the inner wall of a roller, the shifting sleeve is arranged on the shaft body in a sleeved mode and can rotate around the shaft body, and the gravity center of the shifting sleeve deviates from the rotating axis of the shifting sleeve. The shifting sleeve can rotate relative to the shaft body and is of an eccentric structure, when the shaft body rotates around the fixed axis along with the roller, the shifting sleeve can rotate relative to the shaft body, the torque generated when the shifting sleeve rotates around the shaft body and the torque generated when the roller rotates are different in direction, and therefore tobacco leaves are thrown away, separated from a rake and make contact with the tobacco leaves to be wound under the action of centrifugal force.

Description

Technical Field

[0001] The utility model relates to the technical field of tobacco processing equipment, and particularly relates to a rotating self-cleaning rake. Background Art

[0002] In the process of tobacco leaf production, tobacco factories often use drum-type equipment to add materials to tobacco leaves. Rake nails are arranged inside the drum. When the drum rotates, under the action of the rake nails, the tobacco leaves roll in the drum, and the liquid material is sprayed on the rolling tobacco leaves to evenly coat the tobacco leaves. Sugar materials generally exist in the liquid material to improve the adhesion between the liquid material and the tobacco leaves. However, at the same time, after the tobacco leaves are coated with the liquid material, it is easy for the tobacco leaves to stick to each other, between the tobacco leaves and the inner wall of the drum, and between the tobacco leaves and the rake nails. During the rolling process of the tobacco leaves, the tobacco leaves are easily hung and wound on the rake, resulting in tobacco leaf residues on the rake after production contact, causing waste of tobacco leaves, and it is necessary for workers to enter the drum for cleaning. Working in a confined space poses certain safety hazards. Content of the Utility Model

[0003] The purpose of the utility model is to provide a rotating self-cleaning rake for the deficiencies of the above-mentioned existing technologies.

[0004] The utility model provides a rotating self-cleaning rake, which includes a shaft body and a shifting sleeve. The shaft body is fixedly arranged on the inner wall of the drum. The shifting sleeve is sleeved on the shaft body, and the shifting sleeve can rotate around the shaft body. The center of gravity of the shifting sleeve deviates from its rotation axis, and there is an included angle between the rotation axis of the shifting sleeve and the rotation axis of the drum.

[0005] A preferred technical solution of the utility model: Ceramic bearings are arranged at both ends of the shifting sleeve, and the shifting sleeve is rotatably connected to the shaft body through the ceramic bearings.

[0006] A preferred technical solution of the utility model: It further includes a base fixedly arranged on the inner wall of the drum. Threaded holes are arranged on the base. External threads are arranged at the bottom end of the shaft body, and the shaft body is threadedly connected to the base.

[0007] A preferred technical solution of the utility model: A table body is arranged at the top end of the shaft body, and the base and the table body form a limit at both ends of the shifting sleeve.

[0008] A preferred technical solution of the utility model: An internal hexagonal hole is arranged at the top of the table body.

[0009] A preferred technical solution of the utility model: Shifting pieces are arranged on the outer wall of the shifting sleeve, and the shifting pieces extend along the length direction of the shifting sleeve.

[0010] A preferred technical solution of the utility model: Along the length direction of the shifting sleeve, the height of the shifting pieces gradually increases or gradually decreases.

[0011] A preferred technical solution of the present utility model: The edge of the paddle is provided with a rounded corner.

[0012] The rotating self-cleaning rake of the present utility model has the following beneficial effects:

[0013] 1. The shifting sleeve can rotate relative to the shaft body, and the shifting sleeve is an eccentric structure. When the shaft body rotates with the drum around a fixed axis, the shifting sleeve can rotate relative to the shaft body, and the torque generated by its rotation around the shaft body is not in the same direction as the torque generated when the drum rotates. As a result, the tobacco leaves are thrown off under the action of centrifugal force, separated from the rake, and contact with the tobacco leaf entanglement.

[0014] 2. The shifting sleeve is rotatably connected to the shaft body through a ceramic bearing. The ceramic bearing has excellent properties such as wear resistance, corrosion resistance, and does not require the use of lubricating oil, which is suitable for the high-temperature and high-humidity working environment inside the drum and can avoid lubricating oil from contaminating the tobacco leaves. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings incorporated into the specification and constituting a part of the specification illustrate embodiments of the present utility model and, together with the description, are used to explain the principles of the present utility model. In these drawings, like reference numerals are used to represent like elements. The drawings in the following description are some embodiments of the present utility model, but not all embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is an exploded view of an embodiment of the present utility model.

[0017] Figure 2 It is a structural view of an embodiment of the present utility model.

[0018] Figure 3 It is a side view of an embodiment of the present utility model.

[0019] In the figure: 10, shaft body; 11, table body; 111, internal hexagonal hole; 12, base; 13, shifting sleeve; 14, ceramic bearing; 15, paddle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model. It should be noted that, without conflict, the embodiments and features in the present application can be combined with each other arbitrarily.

[0021] Please refer to Figures 1 to 3 。A rotary self-cleaning rake, comprising a shaft body 10 and a shifting sleeve 13. The shaft body 10 is fixedly arranged inside the drum, and the shifting sleeve 13 is rotatably sleeved on the shaft body 10. The center of gravity of the shifting sleeve 13 is offset relative to the rotation axis of the shifting sleeve 13. When the shaft body 10 rotates with the drum around the fixed axis, the shifting sleeve 13 rotates relative to the shaft body 10 under the action of its own center of gravity. The tobacco leaves adhered to the shifting sleeve 13 are subjected to centrifugal force and are thrown off the shifting sleeve 13, thereby reducing the adhesion of tobacco leaves to the shifting sleeve 13 and avoiding waste of tobacco leaf materials.

[0022] The shaft body 10 is cylindrical, and an external thread is provided at one end thereof. A base 12 is fixedly welded on the inner wall of the drum, and a threaded hole is opened on the base 12. The shaft body 10 is threadedly connected to the base 12, thereby fixing the shaft body 10 on the inner wall of the drum. This connection method is firm and convenient for disassembly and assembly.

[0023] The shifting sleeve 13 is movably sleeved on the shaft body 10 so that the shifting sleeve 13 rotates around the shaft body 10. Specifically, the shifting sleeve 13 is cylindrical, and shifting pieces 15 are provided on the outer side wall thereof so that the center of gravity of the shifting sleeve 13 is offset relative to its rotation axis. A through hole is opened in the middle of the shaft sleeve, and the shifting sleeve 13 is sleeved on the shaft body 10 through this through hole. Ceramic bearings 14 are respectively fixedly arranged at both ends inside the through hole. The shifting sleeve 13 is connected to the shaft body 10 through the ceramic bearings 14, and the shifting sleeve 13 can rotate relative to the shaft body 10 through the ceramic bearings 14. The ceramic bearings 14 have excellent characteristics such as high temperature resistance, corrosion resistance, and wear resistance, and are suitable for the tobacco leaf feeding and processing link. Moreover, the ceramic bearings 14 do not require lubricating oil and have good self-lubrication, which can avoid the infiltration of lubricating oil into tobacco leaves during the use of ordinary bearings and cause tobacco leaf pollution.

[0024] A table body 11 is fixedly arranged at the top end of the shaft body 10. When the shifting sleeve 13 is sleeved on the shaft body 10, the table body 11 and the base 12 form a limit at both ends of the shifting sleeve 13 to prevent the shifting sleeve 13 from disengaging from the shaft body 10. Preferably, an internal hexagonal hole 111 is further provided at the top of the table body 11, and the shaft body 10 can be fixed on the base 12 through the internal hexagonal hole 111.

[0025] The shifting pieces 15 are plate-shaped, and one side thereof is fixedly arranged on the outer side wall of the shifting sleeve 13. The shifting pieces 15 extend along the length direction of the shifting sleeve 13, and the height of the shifting pieces 15 gradually increases or gradually decreases along the length direction of the shifting sleeve 13, so that one side surface of the shifting pieces 15 away from the shifting sleeve 13 is inclined relative to the shifting sleeve 13, and the cross section of the shifting pieces 15 is a non-right-angled trapezoid or a triangle. When the shifting sleeve 13 rotates around the shaft body 10, the centrifugal forces received by the same tobacco leaf adhered to different positions on the inclined surface of the shifting pieces 15 are different, and the uneven force on the tobacco leaf makes it easier to disengage from the shifting pieces 15 and release the entanglement of the tobacco leaf.

[0026] Preferably, along the axial direction of the shifting sleeve 13, the cross-sectional dimension of the shifting piece 15 gradually decreases, and the connections between the shifting piece 15 and the shifting sleeve 13 are all provided with rounded corners. The smooth connection facilitates the movement of the tobacco leaves, and the tobacco leaves are more likely to move along the shifting piece 15 and break away from the shifting piece 15.

[0027] Preferably, the edges of the shifting piece 15 are all provided with rounded corners so that during the rotation of the shifting sleeve 13, the tobacco leaves can slide along the shifting piece 15 and then break away from the shifting piece 15, avoiding the tobacco leaves being blocked by the edges and corners of the shifting piece 15 and being difficult to separate from the shifting piece 15.

[0028] The common drum is in a cylindrical shape and rotates around its own central axis. In this application, the shaft body 10 is arranged perpendicular to the central axis of the drum; as another implementation manner, there is an acute angle between the shaft body 10 and the central axis of the drum.

[0029] The specific working principle of this application is as follows: When the drum rotates, the shaft body 10 rotates together with the drum. Under the action of gravity, the shifting sleeve 13 with the center of gravity shifted rotates around the shaft body 10, and the rotation axis of the shaft sleeve is not collinear with the rotation axis of the drum. As the shifting sleeve 13 rotates, the tobacco leaves adhered to the shifting sleeve 13 are thrown off the shifting sleeve 13, solving the problem of tobacco leaf entanglement and reducing the residue of tobacco leaves in the drum.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rotary self-cleaning rake, characterized in that: The invention comprises a shaft body (10) and a shifting sleeve (13), wherein the shaft body (10) is fixedly arranged on the inner wall of a drum, the shifting sleeve (13) is sleeved on the shaft body (10), and the shifting sleeve (13) can rotate around the shaft body (10), the center of gravity of the shifting sleeve (13) deviates from its rotation axis, and an angle exists between the rotation axis of the shifting sleeve (13) and the rotation axis of the drum.

2. A rotary self-cleaning rake according to claim 1, characterized in that: Ceramic bearings (14) are provided at both ends of the shifting sleeve (13), and the shifting sleeve (13) is rotatably connected to the shaft body (10) via the ceramic bearings (14).

3. A rotary self-cleaning rake according to claim 1, characterized in that: It also comprises a base (12) fixedly arranged on the inner wall of the drum, the base (12) being provided with a threaded hole, the bottom end of the shaft body (10) being provided with an external thread, and the shaft body (10) being threadedly connected to the base (12).

4. A rotary self-cleaning rake according to claim 3, characterized in that: A platform (11) is provided at the top end of the shaft body (10), and the base (12) and the platform (11) form a limit position at both ends of the pull sleeve (13).

5. A rotary self-cleaning rake according to claim 4, characterized in that: The top of the platform (11) is provided with a hexagonal hole (111).

6. A rotary self-cleaning rake according to claim 1, characterized in that: A paddle (15) is provided on the outer wall of the paddle sleeve (13), and the paddle (15) extends along the length direction of the paddle sleeve (13).

7. A rotary self-cleaning rake according to claim 6, characterized in that: Along the length direction of the pulling sleeve (13), the height of the pulling piece (15) gradually increases or decreases.

8. The rotary self-cleaning rake according to claim 6, characterized in that: The edges of the plectrum (15) are rounded.

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