A roller sifter drum

Abstract

A kind of roller screen roller screen, belong to garbage disposal device, it installs screen roller on roller shell, screen roller is evenly arranged with several hemispherical protrusions of slightly smaller diameter than the diameter of roller screen mesh, the hemispherical protrusions correspond to mesh, under the action of gravity and pressure spring pressure of screen roller, its hemispherical protrusions are tangent to the arc surface of roller screen plate, when rotating with screen plate, its hemispherical protrusions of screen roller are embedded in roller screen mesh, and the clogging in mesh is extruded, to achieve the purpose of automatic screen cleaning.The beneficial effects of the utility model are: the device rotates with the roller screen plate, does not need to drive, does not need to stop, does not need manual, can clean the mesh in time and automatically, saves labor, saves time and effort, does not affect the timeliness of garbage disposal.

Description

Technical Field

[0001] This utility model belongs to the field of waste treatment, and specifically relates to a roller cleaning drum screen. Background Technology

[0002] During waste screening, waste with complex composition and high moisture content often contains soil and gravel that can easily clog the screen holes, affecting the screening effect of the drum screen and reducing production efficiency. To ensure screening effect and production efficiency, the screen holes of the drum screen need to be cleaned in a timely manner. Currently, most drum screens require manual cleaning, which necessitates machine downtime, is time-consuming and labor-intensive, and impacts production efficiency. Utility Model Content

[0003] The purpose of this invention is to overcome the above-mentioned defects and provide a roller cleaning drum screen that can automatically and promptly clean the drum screen without stopping the machine or requiring manual labor.

[0004] The purpose of this utility model is achieved through the following technical solution: a roller cleaning drum screen, comprising a drum screen, the drum screen being provided with a material inlet and a material outlet, the drum screen being composed of a drum screen plate and an externally fitted drum screen shell, the drum screen plate being formed into a drum shape by several screen plates with different apertures, characterized in that: it further comprises a cleaning roller, multiple roller supports are installed on the drum shell, the upper end of the roller supports is connected to a cover plate, an axial opening is provided on the drum shell below the cover plate, the cleaning roller is installed in the opening, the two ends of the central shaft inside the cleaning roller are respectively installed on slide seat bearings, the slide seat bearings are installed on bearing slides, the slide seat bearings can slide up and down along the bearing slides within the bearing slides, the bearings The slide rail is installed on the vertical support of the roller bracket. Several hemispherical protrusions with a diameter slightly smaller than the diameter of the drum screen holes are evenly arranged on the cleaning roller. The hemispherical protrusions of the cleaning roller are tangent to the arc-shaped surface of the drum screen plate and can be embedded in the drum screen holes. The cover plate of the roller bracket is provided with bolt holes. Adjusting nuts are installed in the bolt holes and are connected to adjusting sleeves. A connecting rod is inserted into the adjusting sleeve. One end of the connecting rod is fixed to the slide rail seat bearing. A spring sleeve is coaxially fitted outside the adjusting sleeve. The adjusting sleeve and the spring sleeve slide together. A pressure spring is fitted inside the spring sleeve outside the connecting rod. The spring sleeve and the pressure spring press against the slide rail seat bearing, and the adjusting sleeve presses against the pressure spring.

[0005] The lower end of the adjusting nut has a flange, and the upper end is made into a cylindrical nut with a square neck. The flange at the lower end coincides with the lower surface of the roller bracket cover plate, and the adjusting nut is threadedly connected to the adjusting sleeve.

[0006] The axial and circumferential spacing of the hemispherical protrusions are equal to the axial and circumferential hole spacing of the corresponding screen holes on the drum screen plate.

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

[0008] 1. The cleaning roller rotates with the drum screen plate, requiring no drive, no machine stop, and no manual labor. It can clean the screen holes in a timely and automatic manner, saving labor, time and effort, and does not affect the efficiency of waste disposal.

[0009] 2. It utilizes appropriate principles, has a simple composition, is easy to operate, and achieves good results. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] Figure 2 yes Figure 1 Side view.

[0012] Figure 3 yes Figure 1 A magnified view of a portion of the image.

[0013] in:

[0014] 1-Drum screen plate, 2-Drum screen shell, 3-Connecting flange, 4-Roller bracket, 5-Slide seat bearing, 6-Screening roller, 7-Bearing slide, 8-Adjusting nut, 9-Connecting rod, 10-Adjusting sleeve, 11-Spring sleeve, 12-Pressure spring, 13-Cover plate, 14-Vertical support, 15-Hemispherical protrusion. Detailed Implementation

[0015] Example: As shown in the figure, a roller cleaning drum screen includes a drum screen and a cleaning roller 6. The drum screen is provided with a material inlet and a material outlet. The drum screen consists of a drum screen plate 1 and a drum screen shell 2 fitted around it. The drum screen plate 1 is formed by several screen plates with different apertures arranged in a drum shape. Driven by a drive assembly, the drum screen plate 1 rotates inside the drum screen shell 2. Two roller supports 4 are installed at the front end of the drum shell 2 along the axial direction of the drum. Depending on the length of the drum and the composition of the waste being screened, roller supports 4 can also be installed in the middle and rear of the drum shell. The upper end is connected to the cover plate 13 via the connecting flange 3. An axial opening is provided on the drum housing 2 below the cover plate 13. The cleaning roller 6 is installed in the opening. The two ends of the central shaft inside the cleaning roller 6 are respectively installed on the slide seat bearing 5. The slide seat bearing 5 is installed on the bearing slide 7. The slide seat bearing 5 can slide up and down along the bearing slide 7. The bearing slide 7 is installed on the vertical support 14 of the roller bracket 4. Several hemispherical protrusions 15 with a diameter slightly smaller than the diameter of the drum screen holes are evenly arranged on the cleaning roller 6. The axial spacing of the hemispherical protrusions 15 is similar to the circular spacing of the drum screen holes. The circumferential spacing and the axial and circumferential hole spacing of the corresponding drum screen plate 1 are equal. The hemispherical protrusion 15 of the cleaning roller 6 is tangent to the arc-shaped surface of the drum screen plate 1. The hemispherical protrusion 15 can be embedded in the drum screen hole. The cover plate 13 of the roller support 4 is provided with bolt holes. The adjusting nut 8 is installed in the bolt holes. The adjusting nut 8 is a cylindrical nut with a flange at the lower end and a square neck at the upper end. The flange at the lower end coincides with the lower surface of the cover plate of the roller support 4. Its inner circle is threaded and threaded to the adjusting sleeve 10 with an external thread at one end. The connecting rod 9 is inserted into the adjusting sleeve 10. One end of the connecting rod 9 is fixed to the slide seat bearing 5, and the other end of the connecting rod 9 is connected to a large washer and a nut. The adjusting sleeve 10 is coaxially fitted with a spring sleeve 11, and the adjusting sleeve 10 and the spring sleeve 11 are in sliding fit. The spring sleeve 11 is fitted with a pressure spring 12 outside the connecting rod 9. The spring sleeve 11 and the pressure spring 12 press against the slide seat bearing 5 respectively. The unthreaded end of the adjusting sleeve 10 presses against the pressure spring 12. Under the action of its own weight and the pressure of the pressure spring 12, the hemispherical protrusion 15 of the cleaning roller 6 can be embedded into the screen hole of the drum screen.

[0016] Working principle: The hemispherical protrusion 15 of the cleaning roller 6 is tangent to the circumferential surface of the drum screen plate 1. As it rotates with the drum screen plate 1, the hemispherical protrusion, whose diameter is slightly smaller than the screen hole, is pressed into the screen hole, squeezing out the blockage and achieving automatic cleaning. Adjusting the pressure spring 12 can adjust the contact force between the cleaning roller 6 and the drum screen plate 1, thereby adjusting the squeezing force on the blockage.

[0017] Working process: Multiple hemispherical protrusions, slightly smaller in diameter than the screen holes of the drum screen, are evenly arranged on the cleaning roller 6. The axial and circumferential spacing of these hemispherical protrusions is equal to the axial and circumferential hole spacing of the corresponding screen holes on the drum screen plate 1. Their cylindrical surfaces are always tangent to the cylindrical surface of the drum screen plate 1. When the drum screen plate 1 rotates under the drive of the drive assembly, the cleaning roller 6, tangent to it, rotates in the opposite direction. Under the action of its own weight and the pressure of the pressure spring 12, the hemispherical protrusions 15 on the cylindrical surface of the cleaning roller 6, which mesh with the screen holes of the drum screen, are pressed into or out of the screen holes as they rotate. When the cleaning roller 15 is pressed into the screen hole, the blockage in the screen hole is squeezed out. As the rotation continues, the hemispherical protrusion 15 on the cleaning roller 6 is continuously pressed into the screen hole, clearing the blockage. This cleaning action is repeated continuously. By applying a wrench to the square neck of the adjusting nut 8, the upper and lower positions of the adjusting sleeve 10 are adjusted, and the extension and retraction of the pressure spring 12 are adjusted. This allows the cleaning roller 10 to slide up and down on the slide seat bearings 5 ​​at both ends of the cleaning roller 10 within the bearing slide 7. This adjusts the contact force between the cleaning roller 6 and the drum screen plate 1, thus adjusting the pressure of the hemispherical protrusion on the blockage in the screen hole, ensuring sufficient cleaning force. The cleaning roller 6 is mounted on the slide seat bearings 5 ​​and can slide up and down within the bearing slide 7. This not only ensures sufficient cleaning force by receiving pressure from the pressure spring 12, but also ensures that the cleaning roller 6 remains in contact with the screen plate 1 without jamming or being damaged. This device rotates with the drum screen plate, requiring no drive or manual intervention, and can automatically clean the screen holes. It is a timely and automatic screen cleaning device that does not require machine shutdown, manual intervention, or drive.

Claims

1. A roller sifting drum screen, comprising a drum screen provided with a material feeding port and a material outlet, the drum screen being composed of a drum screen plate and a drum screen shell externally sleeved with the drum screen plate, the drum screen plate being surrounded in a drum shape by a plurality of screen plates with different hole diameters, characterized in that: It also includes a cleaning roller. Multiple roller supports are mounted on the drum screen housing. A cover plate is connected to the upper end of each roller support. An axial opening is provided on the drum screen housing below the cover plate. The cleaning roller is installed within the opening. Both ends of the central shaft inside the cleaning roller are respectively mounted on slide rail bearings. The slide rail bearings are mounted on bearing tracks and can slide up and down within the bearing tracks. The bearing tracks are mounted on the vertical supports of the roller supports. Several hemispherical protrusions with a diameter slightly smaller than the diameter of the drum screen apertures are evenly arranged on the cleaning roller. The hemispherical protrusion of the shaft is tangent to the arc-shaped surface of the drum screen plate. The hemispherical protrusion can be embedded in the screen hole of the drum screen. The cover plate of the roller bracket is provided with bolt holes. An adjusting nut is installed in the bolt holes. The adjusting nut is connected to the adjusting sleeve. A connecting rod is inserted into the adjusting sleeve. One end of the connecting rod is fixed to the slide seat bearing. A spring sleeve is coaxially fitted outside the adjusting sleeve. The adjusting sleeve and the spring sleeve are in sliding fit. A pressure spring is fitted inside the spring sleeve outside the connecting rod. The spring sleeve and the pressure spring press against the slide seat bearing, and the adjusting sleeve presses against the pressure spring. ​ 2. The roller screen drum screen of claim 1, wherein: The lower end of the adjusting nut has a flange, and the upper end is made into a cylindrical nut with a square neck. The flange at the lower end coincides with the lower surface of the roller bracket cover plate, and the adjusting nut is threadedly connected to the adjusting sleeve.

3. The roller screen drum screen of claim 1, wherein: The axial and circumferential spacing of the hemispherical protrusions are equal to the axial and circumferential hole spacing of the corresponding screen holes on the drum screen plate.

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