Rotary screen

Abstract

The utility model provides a drum screen which comprises a drum and a driving gear arranged outside the drum, and further comprises a plurality of supporting rods, a plurality of sliding rods and two fixing plates, the supporting rods are sequentially arranged inside the drum at intervals in the axial direction of the drum, the supporting rods are perpendicularly intersected with the center line of the drum, and the sliding rods are arranged on the supporting rods. The two ends of the supporting rod are fixedly connected with the inner wall of the roller, the sliding rod is perpendicular to the supporting rod, the middle point position of the sliding rod and the middle point position of the supporting rod are in sliding connection, the fixing plates are long strip plates, the long sides of the fixing plates are parallel to the axis of the roller, and the fixing plates are fixedly arranged at the two ends of the sliding rod respectively. The end of the sliding rod is fixedly connected with the center of the fixing plate, and a plurality of steel needles are evenly and fixedly arranged on the face, away from the sliding rod, of the fixing plate. The problem that materials are too large in size and cannot be split or fragmented in the roller is solved, and the screening effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sorting equipment especially relates to a drum screen. BACKGROUND

[0002] The drum screen is a kind of machinery that is widely used in sorting technology, is controlled by the particle size of granule to garbage sorting, and has high sorting precision.The cylinder of the drum screen is generally divided into several sections, which can be determined according to specific conditions, and the screen holes are arranged from small to large, and the screen hole diameters on each section are the same.When the material enters the inside of the drum, the drum will make small particles fall from the screen hole through continuous rotation.But when the material inside the drum is hard and solidifies into a large block structure, the rotation of the drum is generally slow, and the material cannot be broken or crushed during the rotation process, or it takes a long time for the material to gradually separate during the rotation process of the drum, and if the material is processed by a crusher before entering the drum screen, the production cost is increased, so the drum screen needs to be optimized. SUMMARY

[0003] In view of the deficiencies in the prior art, the utility model provides a drum screen, which solves the problem that the material volume is too large in the prior art, cannot be broken or crushed in the drum, and affects the screening effect.

[0004] According to the embodiment of the utility model, a kind of drum screen, including drum and the drive gear being set at the outside of drum, including several support rods, several sliding rods and two fixed plates, the support rod is sequentially spaced apart in the axial direction of the drum and is arranged in the inside of drum, support rod and the center line of the drum are perpendicular to intersect, the both ends of support rod and the inner wall of drum are fixedly connected, the sliding rod and the support rod are perpendicular, and the midpoint position of sliding rod and support rod is slidably connected, the fixed plate is long strip board, the long side of fixed plate and the axis of the drum are parallel, and fixed plate is fixedly arranged at the both ends of the sliding rod respectively, and the end of sliding rod and the central position of fixed plate are fixedly connected, and the side of fixed plate away from sliding rod is uniformly provided with several steel needles.

[0005] The technical principle of the utility model is as follows: after the material is put into the drum, the drum continuously rotates, the sliding rod reciprocates in the process of rotation, the fixed plate at both ends of the sliding rod is sequentially opened and closed with the inner wall of the drum, the steel needle is inserted into the material when the fixed plate falls, so as to accelerate the speed of material breaking or crushing, thereby improving the screening efficiency.

[0006] Preferably, the fixed plate is an arc-shaped strip, and the arc of the fixed plate is less than ninety degrees.

[0007] Preferably, a sliding sleeve is fixedly arranged at the middle part of the support rod, and the sliding sleeve is matched with the sliding rod.

[0008] Preferably, a counterweight is provided on the side of the fixing plate near the sliding rod.

[0009] Preferably, the inner side of the fixing plate is provided with an arc-shaped cover plate.

[0010] Preferably, the steel needle and the sliding rod are parallel.

[0011] Preferably, the fixing plate is located near the feed section of the roller.

[0012] Compared with the prior art, the present invention has the following advantages: The present invention has a simple structure. When the drum rotates, the sliding rod will slide relative to the support rod. Under the action of gravity, the fixed plate will move up and down. The steel needles on the bottom surface of the fixed plate will come into contact with large pieces of material. After the steel needles are mixed into the material, they will accelerate the speed of material splitting or crushing, thereby allowing the particles that were originally clumped together to be discharged from the screen holes, thus improving the quality and speed of screening. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] In the above attached diagram: 1. Roller; 2. Support rod; 3. Fixing plate; 4. Steel needle; 5. Counterweight; 6. Arc-shaped cover plate; 7. Sliding rod; 8. Drive gear; 9. Sliding sleeve. Detailed Implementation

[0015] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0016] like Figure 1 As shown in the figure, this utility model embodiment proposes a rotary screen, including a drum 1 and a drive gear 8 disposed outside the drum 1. A driven gear is sleeved at the middle position of the drum 1, and the drive gear 8 meshes with the driven gear. The drive gear 8 is driven by a motor. Several support wheels are symmetrically arranged on both sides below the drum 1 to prevent displacement when the drum 1 rotates. It includes several support rods 2, several sliding rods 7, and two fixed plates 3. The support rods 2 are arranged sequentially and spaced apart inside the drum 1 along the axial direction of the drum 1. The support rods 2 and the center line of the drum 1 are perpendicularly intersecting. The two ends of the support rods 2 are fixedly connected to the inner wall of the drum 1. The sliding rods 7 are perpendicular to the support rods 2 and are slidably connected to the midpoint of the support rods 2. The fixed plate 3 is a long strip plate. The long side of the fixed plate 3 is parallel to the axis of the drum 1. The fixed plate 3 is fixedly disposed at both ends of the sliding rods 7. The end of the sliding rod 7 is fixedly connected to the center position of the fixed plate 3. Several steel needles 4 are uniformly fixedly disposed on the side of the fixed plate 3 away from the sliding rods 7. In this embodiment, three support rods 2 and three sliding rods 7 are provided, and the sliding rods 7 are fixedly connected to the two ends and the middle of the fixed plate 3.

[0017] As a preferred, the fixed plate 3 is an arc-shaped plate in strip shape, and the arc of the fixed plate 3 is less than ninety degrees. The arc of the arc-shaped plate should not be too large to avoid affecting the moving space of the material in the roller 1.

[0018] As a preferred, the middle part of the supporting rod 2 is fixedly provided with a sliding sleeve 9, and the sliding sleeve 9 is matched with the sliding rod 7. The sliding sleeve 9 increases the length of the sliding fit of the sliding rod 7 and the supporting rod 2, and improves the stability of the structure. A gap is arranged between the sliding sleeve 9 and the sliding rod 7 to avoid affecting the sliding between the sliding sleeve 9 and the sliding rod 7 by the material.

[0019] As a preferred, one side of the fixed plate 3 close to the sliding rod 7 is provided with a counterweight 5, and the counterweight 5 makes the fixed plate 3 quickly drop and increases the impact force of the steel needle 4 to crush the material.

[0020] As a preferred, the inner side of the fixed plate 3 is provided with an arc-shaped cover plate 6 to avoid the rotating material staying on the back of the fixed plate 3 and affecting the screening effect. The sliding rod 7 passes through the arc-shaped cover plate 6.

[0021] As a preferred, the steel needle 4 and the sliding rod 7 are parallel to each other, so that the end of the steel needle 4 can face the material to ensure the crushing efficiency.

[0022] As a preferred, the fixed plate 3 is close to the feeding section of the roller 1, so that the fixed plate 3 can crush the large material when the material enters the inside of the rotating sleeve to improve the screening efficiency.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the present application. The technical solutions of the present application should be covered in the scope of the claims of the present application.

Claims

1. A trommel comprising a drum (1) and a drive gear (8) provided externally of the drum (1), characterised in that: The application relates to a supporting device for a rolling cylinder (1), which comprises a plurality of supporting rods (2), a plurality of sliding rods (7) and two fixed plates (3), the supporting rods (2) are arranged in the rolling cylinder (1) in sequence and are spaced apart along the axial direction of the rolling cylinder (1), the supporting rods (2) and the center line of the rolling cylinder (1) are perpendicular to each other, the two ends of the supporting rods (2) are fixedly connected with the inner wall of the rolling cylinder (1), the sliding rods (7) are perpendicular to the supporting rods (2), the midpoint positions of the sliding rods (7) and the supporting rods (2) are slidingly connected, the fixed plates (3) are long strip plates, the long edges of the fixed plates (3) are parallel to the axis of the rolling cylinder (1), the fixed plates (3) are fixedly arranged at the two ends of the sliding rods (7) respectively, the end portions of the sliding rods (7) are fixedly connected with the central positions of the fixed plates (3), and a plurality of steel needles (4) are uniformly fixedly arranged on the side of the fixed plates (3) away from the sliding rods (7).

2. A trommel as claimed in claim 1, wherein: The fixed plate (3) is an arc-shaped strip plate, and the arc of the fixed plate (3) is less than 90 degrees.

3. A trommel as claimed in claim 1, wherein: The middle part of the supporting rod (2) is fixedly provided with a sliding sleeve (9), and the sliding sleeve (9) is matched with the sliding rod (7).

4. A trommel as claimed in claim 1, wherein: The side of the fixed plate (3) close to the sliding rod (7) is provided with a counterweight (5).

5. A trommel as claimed in claim 1, wherein: The inner side of the fixed plate (3) is provided with an arc-shaped cover plate (6).

6. A trommel as claimed in claim 1, wherein: The steel needle (4) is parallel to the sliding rod (7).

7. A trommel according to claim 1, wherein: The fixed plate (3) is close to the feeding section of the rolling cylinder (1).

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