Rotary screen device with efficient self-cleaning function

Abstract

The drum screen device with the efficient self-cleaning function comprises a box body, a base and a self-cleaning unit, the box body and the base are obliquely arranged, the box body comprises a shell, a drum and a screen, the drum is arranged in the shell, the screen is arranged between the drum and the shell, and the self-cleaning unit comprises three cleaning brushes. The cleaning brush comprises a brush plate and a plurality of bristles, the brush plate is in an inverted U shape, one side of the U-shaped brush plate is fixed to the inner wall of the shell, the other side of the U-shaped brush plate is arranged in the roller, and the bristles are fixed to the side, in the roller, of the brush plate and tightly attached to the screen. According to the drum screen device with the efficient self-cleaning function, particulate matter clamped in holes of the screen mesh and sticking substances attached to the surface of the screen mesh are removed through friction between the cleaning brush and the screen mesh, energy does not need to be additionally added, manual cleaning after equipment shutdown is not needed, the screening efficiency can be greatly improved, and the project operation cost can be reduced; the structure is simple, the price is low, and durability is achieved.

Description

Technical Field

[0001] The utility model relates to the field of construction waste screening equipment, in particular to a drum screen device with a high-efficiency self-cleaning function. Background Art

[0002] As my country's urbanization process continues to accelerate, the production of construction waste continues to increase, accounting for 30%-40% of urban waste, and the annual production of construction waste in the country is about 3.5 billion tons. As a renewable resource, construction waste can be converted into recycled coarse aggregate, fine aggregate, redundant soil and other recycled materials after sorting, removal or crushing. Recycled materials can be used to prepare recycled concrete and mortar, non-burning recycled products and other resource utilization products. Screening equipment is one of the essential core equipment in the process of resource disposal of construction waste. Among them, the drum screen is applied to multiple resource disposal projects and treatments due to its advantages of large processing capacity, efficient screening and compact structural design.

[0003] During the actual application of the drum screen device, the screen is prone to blockage. On the one hand, because there are many stone particles in the crushed construction waste, the flaky stones or stones with the same aperture as the screen cannot be screened smoothly, which hinders the screening of materials and causes blockage. On the other hand, the construction waste has a certain humidity. After running for a period of time, the soil particles stick to each other and stick to the screen surface, causing blockage. At present, the method of manually cleaning after stopping the machine to solve the problem of screen blockage is mostly adopted. The problem of screen blockage will not only reduce the screening efficiency, but also increase the equipment load, increase the operation and maintenance cost, and shorten the equipment life. Utility Model Content

[0004] In order to solve the technical problems existing in the prior art, the utility model provides a drum screen device with a high-efficiency self-cleaning function to solve the problem of hole blockage of the drum screen in the prior art.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A drum screen device with high-efficiency self-cleaning function comprises a box body, a base and a self-cleaning unit, the box body and the base are placed at an angle, the box body comprises an outer shell, a drum and a screen, the drum is arranged in the outer shell, the screen is arranged between the drum and the outer shell, the self-cleaning unit comprises a plurality of cleaning brushes, the cleaning brush comprises a bottom plate and a plurality of bristles, the bottom plate is an inverted U-shape, one side of the U-shaped bottom plate is fixed to the inner wall of the outer shell, the other side of the U-shaped bottom plate is arranged in the drum, the bristles are fixed to one side of the bottom plate located in the drum and the bristles are arranged close to the screen.

[0007] As a preferred technical solution, a screened material discharge port is provided at the lower part of the base, and the screened material discharge port is communicated with the outer shell.

[0008] As a preferred technical solution, a conveyor belt and a foundation are provided below the screen material discharge port, and the conveyor belt is installed on the foundation.

[0009] As a preferred technical solution, the drum is driven by a driving assembly, which includes a motor and gears, and the motor is transmission-connected to the drum via the gears.

[0010] As a preferred technical solution, the driving assembly includes two sets of motors and driving gears, the motors are connected to the driving gears, the outer circumference of the drum is provided with circumferentially evenly distributed driven teeth, the driving gears are meshed with the driven teeth, and the two motors drive the driving gears to rotate in the same direction.

[0011] As a preferred technical solution, there are three cleaning brushes, in which multiple bristles are gathered into brush bundles, and the multiple brush bundles are fixed on the bottom plate, and each brush bundle contains no less than six bristles.

[0012] As a preferred technical solution, the brush bundles are staggered in a plum blossom shape.

[0013] As a preferred technical solution, the diameter of the bristles is not less than 1 mm, and the length of the brush bundle is not less than 5 cm.

[0014] As a preferred technical solution, the cleaning brush is made of stainless steel.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] (1) The utility model has a drum screen device with efficient self-cleaning function. The friction between the self-cleaning unit and the screen is used to remove particles stuck in the pores of the screen and adhesives attached to the surface of the screen. The particles are removed in real time during operation without the need for additional energy or manual cleaning after the equipment is shut down. This can greatly increase the screening efficiency and reduce the project operating costs.

[0017] (2) The drum screen device with efficient self-cleaning function of the utility model has a simple structure, is economical, and is durable. It can also be used as a separate component for upgrading and modifying similar drum screen devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a drum screen device with a high-efficiency self-cleaning function of the utility model;

[0019] Figure 2 It is a structural schematic diagram of a driving assembly in a drum screen device with a high-efficiency self-cleaning function of the utility model;

[0020] Figure 3 It is a structural schematic diagram of a cleaning brush in a drum screen device with a high-efficiency self-cleaning function of the utility model.

[0021] In the figure: 1. Shell; 2. Drum; 3. Screen; 4. Base; 5. Screen discharge port; 6. Cleaning brush; 7. Conveyor belt; 8. Foundation; 9. Motor; 10. Driving gear; 11. Driven gear. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further described below in conjunction with specific implementation methods:

[0023] like Figure 1 As shown, a drum 2 screen device with efficient self-cleaning function includes a box body, a base 4 and a self-cleaning unit. The box body and the base 4 are placed obliquely, a feed port is provided at the upper part of the box body, and a screen discharge port 5 is provided at the lower part of the base 4. The screen discharge port 5 is connected to the outer shell 1. It is convenient for the material to move toward the screen discharge port 5 under the action of gravity. The box body includes an outer shell 1, a drum 2 and a screen 3. The drum 2 is arranged in the outer shell 1, and the screen 3 is arranged between the drum 2 and the outer shell 1. The self-cleaning unit includes three cleaning brushes 6, and the cleaning brush 6 includes a bottom plate and a plurality of bristles. The bottom plate is an inverted U-shape, one side of the U-shaped bottom plate is fixed to the inner wall of the outer shell 1, and the other side of the U-shaped bottom plate is arranged in the drum 2. The top of the bottom plate is mounted on the upper edge of the drum 2, and the bristles are fixed to the side of the bottom plate located in the drum 2 and the bristles are arranged close to the screen 3. When the drum 2 rotates, the bristles rub against the inner side of the screen 3, thereby removing the particles stuck in the pores of the screen 3 and the adhesives attached to the surface of the screen 3. In this embodiment, three cleaning brushes 6 are provided to sweep the screen 3 multiple times to thoroughly clean the particles, so that the particles are swept out of the gaps of the screen 3 and fall off due to gravity.

[0024] A conveyor belt 7 and a foundation 8 are provided below the undersize material discharge port 5 . The conveyor belt 7 is installed on the foundation 8 . The undersize material falling out of the undersize material discharge port 5 is conveyed away by the conveyor belt 7 .

[0025] like Figure 2 As shown, the drum 2 is driven by a driving assembly, which includes two groups of motors 9 and a driving gear 10. The drum 2 is powered by the motor 9 to rotate. Specifically, each group of motors 9 is connected to the driving gear 10 in a transmission manner. The outer periphery of the drum 2 is provided with driven teeth 11 evenly distributed in the circumference. Both driving gears 10 are meshed with the driven gears 11. The two motors 9 drive the driving gears 10 to rotate in the same direction. The motor 9 drives the driving gear 10 to rotate, driving the drum 2 to rotate. A chain drive can also be used. Three cleaning brushes 6 are arranged on the side of the drum 2 away from the driving assembly.

[0026] like Figure 3As shown, multiple bristles in the cleaning brush 6 are gathered into a brush bundle, and multiple brush bundles are fixed on the bottom plate, and each brush bundle contains no less than six bristles. The diameter of the bristles is not less than 1mm, and the length of the brush bundle is not less than 5cm. The number of bristles in each brush bundle cannot be too small, and the diameter of the bristles cannot be too short, both to prevent the brush bundle from being too soft and causing inadequate cleaning. The length of the brush bundle cannot be too short to prevent the brush plate from being stuck by particulate matter and adhesives. In this embodiment, a single bundle of bristles is formed by 10 stainless steel wires with a diameter of 1mm gathered into a brush bundle, and the length of the brush bundle is 5cm.

[0027] The brush bundles are staggered in a plum blossom shape so that the bristles can sweep the screen more comprehensively.

[0028] The cleaning brush 6 is made entirely of stainless steel and is more wear-resistant.

[0029] This embodiment is only a further explanation of the present invention, not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed, but as long as it is within the scope of the claims of the present invention, it will be protected by the patent law.

Claims

1. A drum screen device with efficient self-cleaning function, characterized in that: It includes a box body, a base and a self-cleaning unit, the box body and the base are placed at an angle, the box body includes an outer shell, a drum and a screen, the drum is arranged in the outer shell, the screen is arranged between the drum and the outer shell, the self-cleaning unit includes a plurality of cleaning brushes, the cleaning brush includes a bottom plate and a plurality of bristles, the bottom plate is an inverted U-shape, one side of the U-shaped bottom plate is fixed to the inner wall of the outer shell, the other side of the U-shaped bottom plate is arranged in the drum, the bristles are fixed to one side of the bottom plate located in the drum and the bristles are arranged close to the screen.

2. A drum screen device with efficient self-cleaning function according to claim 1, characterized in that: A screen under material discharge port is provided at the lower part of the base, and the screen under material discharge port is communicated with the outer shell.

3. A drum screen device with efficient self-cleaning function according to claim 2, characterized in that: A conveyor belt and a foundation are provided below the screen under material discharge port, and the conveyor belt is installed on the foundation.

4. The drum screen device with high-efficiency self-cleaning function according to claim 1, characterized in that: The roller is driven by a driving assembly, which includes a motor and a gear. The motor is connected to the roller through the gear.

5. The drum screen device with high-efficiency self-cleaning function according to claim 4, characterized in that: The driving assembly includes two groups of motors and driving gears. The motors are connected to the driving gears in a transmission manner. The outer circumference of the drum is provided with circumferentially evenly distributed driven teeth. The driving gears mesh with the driven teeth. The two motors drive the driving gears to rotate in the same direction.

6. The drum screen device with high-efficiency self-cleaning function according to claim 1, characterized in that: There are three cleaning brushes, and multiple bristles in the cleaning brushes are gathered into brush bundles. The multiple brush bundles are fixed on the bottom plate, and each brush bundle contains no less than six bristles.

7. The drum screen device with high-efficiency self-cleaning function according to claim 6, characterized in that: The brush bundles are staggered and distributed in a plum blossom shape.

8. The drum screen device with high-efficiency self-cleaning function according to claim 6, characterized in that: The diameter of the bristles is not less than 1 mm, and the length of the brush bundle is not less than 5 cm.

9. The drum screen device with high-efficiency self-cleaning function according to claim 1, characterized in that: The cleaning brush is made of stainless steel.

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