Self-cleaning cylinder precleaner

Abstract

The utility model provides a self-cleaning cylinder precleaner, and belongs to the technical field of grain and oil machinery. Comprising a machine box, the machine box is rotationally connected with a pair of supporting rollers, and the included angle between the axis of each supporting roller and the horizontal plane ranges from 10 degrees to 30 degrees; a screen drum is arranged between the two supporting rollers, a plurality of groove rings are fixed to the peripheral face of the screen drum, and first transmission wheels corresponding to the groove rings one to one are fixed to the supporting rollers. Each first transmission wheel is connected into the corresponding groove ring in a rolling mode. A motor is arranged on the case, and a belt pulley is arranged between an output shaft of the motor and one of the supporting rollers for transmission connection; a feeding hopper and a plurality of discharging ports are further fixed to the machine box, the feeding hopper is located above the higher end of the screen drum, and all the discharging ports are located below the screen drum. The utility model has the advantages of firm and durable structure, stable operation, good environmental protection performance and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of grain and oil machinery and relates to a self-cleaning cylindrical primary cleaning screen. Background Art

[0002] Drum primary cleaning screens are widely used in the grain and oil processing industry due to their compact structure and excellent sealing and dustproof properties. However, since grain and oil materials often contain large amounts of dust and other fine particles, dust easily adheres to the screen drum during actual use, and fine particles often get stuck in the mesh of the screen drum, thus affecting the screening efficiency. These dust and debris must be cleaned promptly to ensure the normal operation of the equipment. Utility Model Content

[0003] The purpose of the utility model is to provide a self-cleaning drum primary cleaning screen to solve the above problems in the existing technology, so as to automatically clean the screen drum to ensure its screening effect.

[0004] The purpose of the utility model can be achieved through the following technical solutions: A self-cleaning drum primary cleaning screen, characterized in that the primary cleaning screen includes a chassis, the chassis is rotatably connected to a pair of support rollers, and the angle between the axis of each support roller and the horizontal plane is between 10° and 30°; a screen drum is provided between the two support rollers, a plurality of groove rings are fixed on the outer circumference of the screen drum, and a first transmission wheel corresponding to each groove ring is fixed on the support roller; each first transmission wheel is rotatably connected in the corresponding groove ring; a motor is provided on the chassis, and a pulley is provided between the output shaft of the motor and one of the support rollers for transmission connection; an inlet hopper and a plurality of outlets are also fixed on the chassis, the inlet hopper is located above the higher end of the screen drum, and each outlet is located below the screen drum; a cleaning box is detachably mounted on the top of the chassis, the bottom of the cleaning box is open, and the inner bottom of the cleaning box is rotatably connected to a rotating shaft, and a plurality of second transmission wheels and a plurality of brush rollers are fixed on the rotating shaft; each second transmission wheel is rotatably connected in the corresponding groove ring; and a plurality of air duct interfaces are opened on the top of the cleaning box.

[0005] The utility model has the advantages:

[0006] 1. In the primary cleaning, a brush roller is installed inside, which can clean the screen drum when it is running, thereby removing the dust adhering to the screen and the granular debris stuck in the screen holes, ensuring the screening efficiency of the primary cleaning.

[0007] 2. In the initial screening, the brush roller is set in the cleaning box, and the top of the cleaning box is provided with an air duct interface, so that it can be connected to the negative pressure exhaust equipment to extract and collect the swept dust in time, avoiding a large amount of dust generated by the operation of the equipment, making it more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the three-dimensional structure of the primary screening.

[0009] Figure 2 This is a schematic diagram of the internal structure of the primary screening machine.

[0010] Figure 3 It is a schematic diagram of the three-dimensional structure of the cleaning box.

[0011] In the figure, 1. chassis; 2. support roller; 21. first transmission wheel; 3. screen drum; 31. groove ring; 4. motor; 5. pulley; 6. feed hopper; 7. discharge port; 8. cleaning box; 81. rotating shaft; 82. second transmission wheel; 83. brush roller; 84. air duct interface. DETAILED DESCRIPTION

[0012] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0013] like Figure 1 、 Figure 2 and Figure 3 As shown, a self-cleaning drum primary cleaning screen includes a chassis 1, which is rotatably connected to a pair of support rollers 2, and the angle between the axis of each support roller 2 and the horizontal plane is between 10° and 30°; a screen drum 3 is provided between the two support rollers 2, and a plurality of groove rings 31 are fixed on the outer circumference of the screen drum 3, and a first transmission wheel 21 corresponding to each groove ring 31 is fixed on the support roller 2; each first transmission wheel 21 is rollingly connected to the corresponding groove ring 31; a motor 4 is provided on the chassis 1, and a belt is provided between the output shaft of the motor 4 and one of the support rollers 2. The pulley 5 is connected for transmission; a feed hopper 6 and several discharge ports 7 are also fixed on the chassis 1, the feed hopper 6 is located above the higher end of the screen drum 3, and each discharge port 7 is located below the screen drum 3; a cleaning box 8 is detachably installed on the top of the chassis 1, the bottom of the cleaning box 8 is open, and the inner bottom of the cleaning box 8 is rotatably connected to a rotating shaft 81, and several second transmission wheels 82 and several brush rollers 83 are fixed on the rotating shaft 81; each second transmission wheel 82 is rollingly connected in the corresponding groove ring 31; a number of air duct interfaces 84 are opened on the top of the cleaning box 8.

[0014] Working Principle: During the initial cleaning, the motor 4 drives one of the support rollers 2 to rotate via the pulley 5, which in turn drives the screen drum 3 to rotate via the transmission wheels and groove ring 31. Grain and oil enter the screen drum 3 from the feed hopper 6 and then roll down in the tilted rotating screen drum 3, completing the material screening. At the same time, the rotation of the screen drum 3 can drive the brush roller 83 to rotate via the secondary transmission, thereby completing the cleaning operation of the screen drum 3. While cleaning, the air duct interface 84 at the top of the cleaning box 8 can be connected to other negative pressure exhaust equipment to promptly remove the cleaned dust, reducing the dust generated by the operation of the equipment and making it more environmentally friendly.

[0015] In this primary cleaning process, the sieve drum 3 is equipped with several grooved rings 31. These not only cooperate with the drive wheels for transmission, but also serve as reinforcement ribs for the sieve drum 3, making the overall structure of the sieve drum 3 more durable and robust. The coordinated transmission between the drive wheels and the grooved rings 31 provides a good deceleration effect (the outer diameter of the grooved rings 31 is much larger than that of the drive wheels). Furthermore, in this primary cleaning process, several secondary drive wheels 82 are mounted on the top rotating shaft 81, which limit and secure the sieve drum 3 from above, ensuring smoother operation.

[0016] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A self-cleaning cylindrical primary cleaning screen, characterized in that: The primary cleaning screen comprises a chassis (1), wherein the chassis (1) is rotatably connected to a pair of support rollers (2), and the angle between the axis of each support roller (2) and the horizontal plane is between 10° and 30°; a screen drum (3) is provided between the two support rollers (2), a plurality of groove rings (31) are fixed on the outer peripheral surface of the screen drum (3), and a first transmission wheel (21) corresponding to each groove ring (31) is fixed on the support roller (2); each first transmission wheel (21) is rollingly connected in the corresponding groove ring (31); a motor (4) is provided on the chassis (1), and a pulley (5) is provided between the output shaft of the motor (4) and one of the support rollers (2) for transmission. connection; a feed hopper (6) and a plurality of discharge ports (7) are also fixed on the chassis (1); the feed hopper (6) is located above the higher end of the screen drum (3), and each discharge port (7) is located below the screen drum (3); a cleaning box (8) is detachably mounted on the top of the chassis (1); the bottom of the cleaning box (8) is open, and the inner bottom of the cleaning box (8) is rotatably connected to a rotating shaft (81), and a plurality of second transmission wheels (82) and a plurality of brush rollers (83) are fixed on the rotating shaft (81); each of the second transmission wheels (82) is rollingly connected in the corresponding groove ring (31); a plurality of air duct interfaces (84) are opened on the top of the cleaning box (8).

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