Drum screen

Abstract

The utility model discloses a drum screen, which relates to the technical field of material screening, aims to solve the problems of short service life and high operation noise of riding wheels of the drum screen, and comprises a bottom frame, a drum core barrel is mounted on the bottom frame, a pair of driving riding wheels is arranged at one end of the drum core barrel, and the other end of the drum core barrel is provided with a pair of driven riding wheels. A driving riding wheel is arranged at one end of the roller core cylinder, the driving riding wheel is connected with a driving device so as to drive the driving riding wheel to rotate, a pair of driven riding wheels is arranged at the other end of the roller core cylinder, no less than one pair of middle riding wheels are further arranged between the driving riding wheel and the driven riding wheels, and the middle riding wheels are arranged in an elastic mode. And the middle riding wheel can always abut against the roller core cylinder.

Description

Technical Field

[0001] This utility model relates to the technical field of material screening, specifically to a drum screen. Background Technology

[0002] A drum screen is a mechanical device used for material grading and screening. Through its rotating drum structure, it can efficiently separate materials of different particle sizes.

[0003] Currently, in the recycled aluminum crushing and sorting industry, after material crushing, particle size screening is required to ensure the accuracy of subsequent material sorting. Most recycled aluminum manufacturers currently use drum screens to classify materials. However, with the increase in production volume, the required size and length of drum screens are also increasing. This leads to increasingly higher requirements for the concentricity of drum screens. Current processes make it difficult to guarantee the concentricity of larger and longer drum screens. While drum screens with concentricity deviations do not affect material screening during operation, they experience greater friction with the rollers, resulting in greater wear and tear on the rollers, requiring frequent roller replacements. Furthermore, the noise level during operation is relatively high, as the rollers collide with the drum. Utility Model Content

[0004] To address the aforementioned problems, namely the short lifespan and high operating noise of the drum screen's support rollers, this utility model proposes a drum screen comprising a base frame on which a drum core is mounted. A pair of active support rollers are provided at one end of the drum core, and each active support roller is connected to a drive device to drive its rotation. A pair of driven support rollers are provided at the other end of the drum core. At least one pair of intermediate support rollers are also provided between the active and driven support rollers, and these intermediate support rollers are elastically configured.

[0005] A further feature of this invention is that it includes a roller support seat, the intermediate roller is rotatably connected to the roller support seat, the side of the roller support seat near the drum core is rotatably connected to the base frame, a spring is provided below the roller support seat, the bottom end of the spring abuts against the base frame, and the top end of the spring abuts against the roller support seat.

[0006] A further feature of this invention is that both the roller support and the base frame are provided with spring seats, and the two ends of the spring abut against the two spring seats respectively.

[0007] The beneficial effects of this utility model are as follows:

[0008] By setting the intermediate support roller elastically, it can always be in contact with the drum core, providing continuous support. Even if the drum core has a large concentricity, the intermediate support roller can still maintain contact with it due to its elasticity. This avoids the drum core colliding with the support roller due to large concentricity, further reducing friction between the intermediate support roller and the drum core, reducing wear and tear on the intermediate support roller, and extending its service life. At the same time, avoiding collisions between the intermediate support roller and the drum core also reduces operating noise. Attached Figure Description

[0009] Figure 1 A schematic diagram of the structure of this utility model is shown.

[0010] Figure 2 A schematic diagram of the structure of this utility model after the outer cover is removed is shown.

[0011] Figure 3 It shows Figure 2 A magnified view of a portion of point A in the middle.

[0012] Figure 4 A partial magnification of the intermediate support roller is shown. Figure 1 .

[0013] Figure 5 A partial magnification of the intermediate support roller is shown. Figure 2 .

[0014] Reference numerals in the attached drawings: 1. Base frame; 2. Drum core cylinder; 21. Outer cover; 3. Driving support roller; 31. Drive device; 4. Driven support roller; 5. Intermediate support roller; 51. Support roller seat; 52. Spring; 521. Spring seat. Detailed Implementation

[0015] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0016] Reference Appendix Figure 1-5 This utility model proposes a drum screen, including a base frame 1, which is welded from several square tubes. A drum core 2 is rotatably connected to the base frame 1. A feed hopper is installed at one end of the drum core 2 for adding materials into the drum core 2. The outside of the drum core 2 is also covered by an outer cover 21, which includes a lower cover and an upper cover. The lower cover is fixedly connected to the base frame 1 by bolts, and the upper cover is fixedly connected to the lower cover by bolts, so as to achieve the purpose of covering the drum core 2. The upper cover and the lower cover can form a complete prismatic shape and are coaxially arranged with the drum core 2.

[0017] A pair of active support rollers 3 are installed at one end of the drum core 2 near the feed hopper. The two active support rollers 3 are symmetrically arranged about the drum core 2. The side surfaces of the drum core 2 abut against the two active support rollers 3 respectively to support the drum core 2. The active support rollers 3 are connected to the base frame 1 through a mounting bracket, that is, the mounting bracket is fixed to the base frame 1 by bolts. The active support rollers 3 are rotatably connected to the mounting bracket through a rotating shaft. A drive device 31 is also installed on the base frame 1 corresponding to the active support rollers 3. The drive device 31 is a reducer. The drive device 31 is fixed to the base frame 1 by bolts. The output shaft of the drive device 31 is coaxially fixedly connected to the active support rollers 3 to drive the active support rollers 3 to rotate. Thus, under the drive of the two active support rollers 3, the drum core 2 can be driven to rotate.

[0018] Multiple pairs of driven rollers 4 are installed at the end of the drum core 2 away from the feed hopper. The two driven rollers 4 are symmetrically arranged about the drum core 2. The side surface of the drum core 2 abuts against the two driven rollers 4 respectively to support the drum core 2. The driven rollers 4 are also connected to the base frame 1 through the mounting bracket. That is, the mounting bracket is fixed to the base frame 1 by bolts. The driven rollers 4 are rotatably connected to the mounting bracket through the rotating shaft. That is, when the driving roller 3 drives the drum core 2 to rotate, the drum core 2 can also drive the driven rollers 4 to rotate at the same time.

[0019] An intermediate support roller 5 is also installed in the middle of the drum core cylinder 2. The intermediate support roller 5 is located between the driving support roller 3 and the driven support roller 4. In this application, a pair of intermediate support rollers 5 are also provided. The two intermediate support rollers 5 are also symmetrically arranged about the drum core cylinder 2, and the intermediate support roller 5 is elastically arranged.

[0020] It should be noted that the number of pairs of intermediate support rollers 5 can be adjusted appropriately according to the length of the roller core 2, but at least one pair should be set. This application only uses the setting of one pair as an example.

[0021] It also includes a roller support seat 51. The side of the roller support seat 51 closest to the drum core 2 is rotatably connected to the base frame 1 via a bearing seat, so that the roller support seat 51 can rotate relative to the base frame 1. The middle roller 5 is rotatably connected to the roller support seat 51. A spring 52 is provided below the roller support seat 51. A spring seat 521 is installed on the base frame 1 corresponding to the spring 52. The spring 52 is fixedly connected to the base frame 1 by bolts. The bottom end of the spring 52 abuts against the spring seat 521 connected to the base frame 1. A spring seat 521 is also bolted to the roller support seat 51 and is installed on the upper surface of the roller support seat 51. A rectangular hole is opened on the roller support seat 51 corresponding to the spring 52. The top end of the spring 52 passes through the rectangular hole and abuts against the spring seat 521 connected to the roller support seat 51.

[0022] In use, under the action of the elastic force of the spring 52, the spring 52 can press the intermediate support roller 5 against the drum core 2. Under the action of the elastic force of the spring 52, the position of the intermediate support roller 5 can also be adjusted appropriately as the drum core 2 is compressed or relaxed, so that the intermediate support roller 5 can always maintain the state of being against the drum core 2.

[0023] In summary, by elastically setting the intermediate support roller 5, this utility model ensures that the intermediate support roller 5 always abuts against the drum core 2, providing continuous support to the drum core 2. Even if the concentricity of the drum core 2 is large, the intermediate support roller 5 can still abut against the drum core 2 under the action of elasticity. This avoids the problem of the drum core 2 colliding with the support roller due to large concentricity, further reducing the friction between the intermediate support roller 5 and the drum core 2, reducing the wear and tear of the intermediate support roller 5, and extending the service life of the intermediate support roller 5. At the same time, avoiding the collision between the intermediate support roller 5 and the drum core 2 can also reduce operating noise.

[0024] Although the present invention has been described with reference to preferred embodiments, various modifications can be made to it and components can be replaced with equivalents without departing from the scope of the present invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0025] In the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A drum screen comprising a chassis (1) on which a drum core (2) is mounted, one end of the drum core (2) is provided with a pair of driving idlers (3), the driving idlers (3) are connected with a driving device (31) for driving the driving idlers (3) to rotate, the other end of the drum core (2) is provided with a pair of driven idlers (4), and not less than one pair of intermediate idlers (5) are further provided between the driving idlers (3) and the driven idlers (4). The intermediate roller (5) is elastically arranged.

2. The trommel of claim 1, wherein: The intermediate roller (5) is rotatably connected to a roller seat (51), which is rotatably connected to the chassis (1) near one side of the drum core (2). A spring (52) is arranged below the roller seat (51), with the bottom end of the spring (52) abutting the chassis (1) and the top end of the spring (52) abutting the roller seat (51).

3. The trommel of claim 2, wherein: The roller seat (51) and the chassis (1) are both provided with spring seats (521), and the two ends of the spring (52) abut the two spring seats (521) respectively.

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