A rolling screen device

Abstract

The utility model provides a kind of roll screen device, including horizontal and fixedly arranged outer cylinder, screen cylinder coaxially arranged in the outer cylinder, the both ends of the outer cylinder are equipped with end cap, the screen cylinder includes respectively the feed cylinder, discharge cylinder of the end cap of two ends, the feed cylinder, the discharge cylinder extends to the inside of the outer cylinder and is drivingly connected with driving mechanism, the feed cylinder, the discharge cylinder between fixedly connected with sieve cylinder, the outer cylinder is fixedly connected with the material collecting mechanism below the sieve cylinder in, the outer cylinder is equipped with two groups respectively in the sieve cylinder two sides and above the material collecting mechanism in the water curtain dust removal mechanism, the top of the outer cylinder is equipped with suction mechanism with its inside intercommunication.The utility model can effectively handle dust in screening process, and reduce manual operation, improve screening efficiency.

Description

Technical Field

[0001] This utility model relates to the field of rotary screen equipment technology, and in particular to a rotary screen device. Background Technology

[0002] A rotary screen is an industrial screening device. It is generally equipped with a rotating screen cylinder. It can classify and screen granular fertilizers after granulation, drying and cooling by rotating the cylinder and using different grades of screens. Products with qualified particle size enter the packaging process, and products with unqualified particle size enter the return process.

[0003] The rotary screen with transmission is equipped with a single exposed screen cylinder. The dust generated during the screening process is not easy to handle, and it is inconvenient to collect the screened material. The screen holes in the screen cylinder are also prone to clogging, requiring frequent manual collection and impurity removal. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a rotary screen device that has a good dust removal and reduction effect, reduces manual operation, and ensures work efficiency.

[0005] According to an embodiment of this utility model, a rotary screen device includes a horizontally and fixedly arranged outer cylinder and a screen cylinder coaxially arranged inside the outer cylinder. The outer cylinder has end caps at both ends. The screen cylinder includes a feed cylinder and a discharge cylinder that pass through the end caps at both ends respectively. The feed cylinder and the discharge cylinder extend into the outer cylinder and are connected to a drive mechanism. A screen cylinder is fixedly connected between the feed cylinder and the discharge cylinder. A receiving mechanism located below the screen cylinder is fixedly connected inside the outer cylinder. Two sets of water curtain dust removal mechanisms are provided inside the outer cylinder, located on both sides of the screen cylinder and above the receiving mechanism. A suction mechanism communicating with the interior of the outer cylinder is provided at the top of the outer cylinder.

[0006] Preferably, the driving mechanism includes two sets of driving wheels disposed below the screen cylinder, a power assembly connected to the driving wheels, and the two sets of driving wheels abutting against the bottom of the feed cylinder and the discharge cylinder.

[0007] More preferably, the feed cylinder and the discharge cylinder are provided with annular transmission grooves, the drive wheel is installed in the transmission grooves and abuts against them, and the inner wall of the screen cylinder is fixed with spirally arranged pusher blades.

[0008] More preferably, at least one set of driven wheels is provided above the screen cylinder, the driven wheels abut against the top of the feed cylinder and the discharge cylinder, the driven wheels are coaxially connected to a rotating shaft parallel to the axis of the screen cylinder, and an elastic striking plate is fixedly connected to the rotating shaft.

[0009] More preferably, the receiving mechanism includes an arc-shaped plate coaxially arranged with the screen cylinder, a discharge trough disposed at the bottom of the arc-shaped plate, and an auger assembly coaxially disposed in the discharge trough, wherein the outlet end of the discharge trough passes through the end cap.

[0010] More preferably, the bottom two sides of the arc-shaped plate are fixedly connected to the inner wall of the outer cylinder by support members.

[0011] More preferably, the water curtain dust removal mechanism includes a water curtain plate whose two ends are fixedly connected to the end caps on both sides, a water pipe fixed in the outer cylinder, and a nozzle connected to the water pipe and arranged toward the water curtain plate.

[0012] In a further preferred embodiment, the nozzle faces the side of the water curtain plate near the screen cylinder, and multiple sets of the water curtain plates are respectively provided on both sides of the screen cylinder, each of the water curtain plates being an arc panel with a different inclination angle.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] An outer cylinder is installed outside the screen cylinder, and a suction mechanism is installed on the outer cylinder. Water curtain dust removal mechanisms are installed on both sides of the screen cylinder. The suction mechanism generates airflow to accelerate the discharge of dust. During the airflow, it comes into contact with the water curtain dust removal mechanism, which effectively improves the dust reduction effect. At the same time, a material collection mechanism is installed at the bottom of the screen cylinder, which can accelerate the discharge of screened materials and ensure that the screening work is carried out continuously and efficiently. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of a rotary screen device according to the present invention.

[0016] Figure 2 This is a schematic diagram of the right-side cross-sectional structure of a rotary screen device according to the present invention.

[0017] In the above figures: 1. Outer cylinder; 101. End cap; 2. Screen cylinder; 201. Feed cylinder; 202. Discharge cylinder; 203. Screening cylinder; 204. Transmission groove; 205. Pushing blade; 3. Drive mechanism; 301. Drive wheel; 302. Power assembly; 303. Driven wheel; 304. Rotating shaft; 305. Elastic striking plate; 4. Receiving mechanism; 401. Arc plate; 402. Discharge chute; 403. Screw assembly; 404. Support component; 5. Water curtain dust removal mechanism; 501. Water curtain plate; 502. Water pipe; 503. Nozzle; 6. Suction mechanism. Detailed Implementation

[0018] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0019] This utility model provides an embodiment, such as Figure 1 , Figure 2 As shown, a rotary screen device includes a horizontally and fixedly arranged outer cylinder 1 and a screen cylinder 2 coaxially arranged inside the outer cylinder 1. End caps 101 are provided at both ends of the outer cylinder 1, and the end caps 101 have through holes that can be clearance-fitted with the screen cylinder 2. The screen cylinder 2 includes a feed cylinder 201 and a discharge cylinder 202 that respectively penetrate the end caps 101 at both ends. The feed cylinder 201 and the discharge cylinder 202 extend through the through holes into the interior of the outer cylinder 1 and are connected to a drive mechanism 3 for transmission. Mechanism 3 is used to drive the screen cylinder 2 to rotate. A screen cylinder 203 is fixedly connected between the feed cylinder 201 and the discharge cylinder 202. The screen cylinder 203 is provided with uniformly distributed screen holes. A material receiving mechanism 4 located below the screen cylinder 203 is fixedly connected inside the outer cylinder 1. Two sets of water curtain dust removal mechanisms 5 are provided inside the outer cylinder 1, located on both sides of the screen cylinder 203 and above the material receiving mechanism 4. A suction mechanism 6 communicating with the interior of the outer cylinder 1 is provided at the top of the outer cylinder 1.

[0020] During the screening process, the material passing through the screen holes falls into the receiving mechanism 4 and is discharged from the outside of the outer cylinder 1 by the receiving mechanism 4. The suction mechanism 6 drives the airflow inside the outer cylinder 1 to carry out the generated dust. At the same time, the airflow comes into contact with the water curtain dust removal mechanism 5 on both sides, which can further improve the dust reduction effect.

[0021] Specifically, the drive mechanism 3 includes two sets of drive wheels 301 disposed below the screen cylinder 2 and a power assembly 302 connected to the drive wheels 301. The two sets of drive wheels 301 abut against the bottom of the feed cylinder 201 and the discharge cylinder 202. Each set of drive wheels 301 has two wheels and is coaxially arranged. The two sets of drive wheels 301 are disposed on both sides of the screen cylinder 2 and have a supporting effect.

[0022] The power assembly 302 includes a servo motor and a reducer fixed to the outside of the end cover 101. The power assembly 302 is connected to the drive shaft of the drive wheel 301 to drive it to rotate.

[0023] To improve stability during transmission, in a further embodiment, the feed cylinder 201 and the discharge cylinder 202 are provided with annular transmission grooves 204, and the drive wheel 301 is installed inside the transmission grooves 204 and contacts them.

[0024] In order to improve the efficiency of axial movement of materials, in a further embodiment, a spirally arranged pusher blade 205 is fixedly provided on the inner wall of the screen cylinder 2;

[0025] To prevent the screen holes of the screen cylinder 203 from clogging, in a further embodiment, at least one set of driven wheels 303 is provided above the screen cylinder 2. In this embodiment, two sets are provided, each set having two coaxial driven wheels 303. The two sets of driven wheels 303 are arranged on both sides of the screen cylinder 2. The driven wheels 303 abut against the top of the feed cylinder 201 and the discharge cylinder 202. The driven wheels 303 are coaxially connected to a rotating shaft 304 parallel to the axis of the screen cylinder 2. An elastic striking plate 305 is fixedly connected to the rotating shaft 304.

[0026] When the screen cylinder 2 rotates, it drives the rotating shaft 304 to rotate. The rotating shaft 304 drives the elastic striking plate 305 to strike the outside of the screen cylinder 203, which helps the material in the screen hole to fall off.

[0027] In order to accelerate the discharge of materials, in a further embodiment, the receiving mechanism 4 includes an arc plate 401 coaxially arranged with the screen cylinder 2, a discharge trough 402 arranged at the bottom of the arc plate 401, and an auger assembly 403 coaxially arranged in the discharge trough 402, wherein the outlet end of the discharge trough 402 passes through the end cover 101.

[0028] To improve the stability of the arc plate 401, the bottom sides of the arc plate 401 are fixedly connected to the inner wall of the outer cylinder 1 through support members 404.

[0029] Specifically, the water curtain dust removal mechanism 5 includes a water curtain plate 501 with both ends fixedly connected to the end caps 101 on both sides, a water pipe 502 fixed inside the outer cylinder 1, and a nozzle 503 connected to the water pipe 502 and facing the water curtain plate 501.

[0030] To improve the dust suppression effect, in a further embodiment, the nozzle 503 faces the side of the water curtain plate 501 near the screen cylinder 2, and multiple sets of the water curtain plates 501 are respectively provided on both sides of the screen cylinder 2. Each water curtain plate 501 is an arc panel with a different tilt angle.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A rotary screen device, comprising a horizontally and fixedly arranged outer cylinder (1) and a screen cylinder (2) coaxially arranged within the outer cylinder (1), characterized in that, The outer cylinder (1) is provided with end caps (101) at both ends. The screen cylinder (2) includes a feed cylinder (201) and a discharge cylinder (202) that pass through the end caps (101) at both ends respectively. The feed cylinder (201) and the discharge cylinder (202) extend into the outer cylinder (1) and are connected to a drive mechanism (3). A screen cylinder (203) is fixedly connected between the feed cylinder (201) and the discharge cylinder (202). A receiving mechanism (4) located below the screen cylinder (203) is fixedly connected inside the outer cylinder (1). Two sets of water curtain dust removal mechanisms (5) are provided inside the outer cylinder (1) located on both sides of the screen cylinder (203) and above the receiving mechanism (4). A suction mechanism (6) communicating with the interior of the outer cylinder (1) is provided at the top of the outer cylinder (1).

2. The rotary screen device according to claim 1, characterized in that, The drive mechanism (3) includes two sets of drive wheels (301) disposed below the screen cylinder (2) and a power assembly (302) connected to the drive wheels (301). The two sets of drive wheels (301) abut against the bottom of the feed cylinder (201) and the discharge cylinder (202).

3. The rotary screen device according to claim 2, characterized in that, The feed cylinder (201) and the discharge cylinder (202) are provided with annular transmission grooves (204), the drive wheel (301) is installed in the transmission grooves (204) and abuts against them, and the inner wall of the screen cylinder (2) is fixed with spirally arranged pusher blades (205).

4. A rotary screen device according to claim 2, characterized in that, At least one set of driven wheels (303) are provided above the screen cylinder (2). The driven wheels (303) abut against the top of the feed cylinder (201) and the discharge cylinder (202). The driven wheels (303) are coaxially connected to a rotating shaft (304) parallel to the axis of the screen cylinder (2). An elastic striking plate (305) is fixedly connected to the rotating shaft (304).

5. A rotary screen device according to any one of claims 1-4, characterized in that, The receiving mechanism (4) includes an arc-shaped plate (401) coaxially arranged with the screen cylinder (2), a discharge trough (402) arranged at the bottom of the arc-shaped plate (401), and an auger assembly (403) coaxially arranged in the discharge trough (402). The outlet end of the discharge trough (402) passes through the end cap (101).

6. A rotary screen device according to claim 5, characterized in that, The bottom sides of the arc plate (401) are fixedly connected to the inner wall of the outer cylinder (1) by support members (404).

7. A rotary screen device according to claim 5, characterized in that, The water curtain dust removal mechanism (5) includes a water curtain plate (501) with both ends fixedly connected to the end caps (101) on both sides, a water pipe (502) fixed inside the outer cylinder (1), and a nozzle (503) connected to the water pipe (502) and facing the water curtain plate (501).

8. A rotary screen device according to claim 7, characterized in that, The nozzle (503) faces the side of the water curtain plate (501) close to the screen cylinder (2). Multiple sets of water curtain plates (501) are provided on both sides of the screen cylinder (2). Each water curtain plate (501) is an arc panel with a different tilt angle.

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