Low-energy-consumption drum screen for recycled concrete

Abstract

The low-energy-consumption drum screen for the recycled concrete relates to the field of screening equipment, and comprises a supporting frame, a screen drum, a driving assembly, a cleaning assembly and a lifting assembly, a plurality of evenly-distributed screen holes are formed in the surface of the screen drum in a penetrating mode, a feeding port and a discharging port are formed in the two ends of the screen drum respectively, and the screen drum is rotationally connected with the supporting frame; the driving assembly is located on the supporting frame and used for driving the screen drum to rotate. The cleaning assembly comprises a cross rod and cleaning rods, the cross rod is connected with the supporting frame through the lifting assembly, the lifting assembly is used for driving the cross rod to do lifting motion, the multiple cleaning rods are evenly distributed in the axial direction of the cross rod at intervals, and the cleaning rods are used for cleaning materials blocked in the screen holes. The screening device has the effect of conveniently cleaning the screening holes of the screening drum.

Description

Technical Field

[0001] This application relates to the field of screening equipment, and in particular to a low-energy consumption drum screen for recycled concrete. Background Art

[0002] Recycled concrete is a kind of concrete made from waste building materials and bonding powders such as concrete. With the large-scale construction of new cities and renovation of old cities, the amount of construction waste is increasing day by day. Construction waste refers to the waste generated during the construction, repair, and demolition of buildings, usually including waste bricks and tiles, waste stones, concrete blocks, and sandy loam. At present, most construction waste is directly stacked or landfilled without treatment, which not only occupies a large amount of land, pollutes the environment, but also causes a large waste of resources. Since waste concrete contains a large amount of sand and gravel aggregates, recycling waste concrete and using it to prepare recycled concrete can not only reduce costs, save natural aggregate resources, but also alleviate the aggregate supply, protect the ecological environment of the aggregate production areas, and solve the problems of stacking, land occupation, and environmental pollution of construction waste. Therefore, the production and utilization of recycled concrete have developed rapidly. During the production and preparation process of recycled concrete, it is necessary to screen and recycle recycled aggregates for utilization.

[0003] In related technologies, for example, the application document with the application number CN202222174093.2 discloses a drum screen, which includes a frame, a supporting wheel set, a screen cylinder, and a driving member. The supporting wheel set is rotatably connected to the frame. The screen cylinder is provided with at least two screen cylinders, and the screen cylinder abuts against the supporting wheel set. The supporting wheel set supports the screen cylinder. At least two screen cylinders are sleeved in sequence. The side wall of the screen cylinder is provided with screen holes, and the sizes of the screen holes of at least two screen cylinders gradually decrease from the inside to the outside. The driving member is arranged on the frame, and the driving member is in transmission connection with the supporting wheel set. The driving member is used to drive the supporting wheel set to rotate, so as to drive the screen cylinder to rotate. Through the above structure, production personnel do not need to be equipped with at least two drum screens, and at least three kinds of materials can be screened out from the mixture, so the cost of screening materials can be reduced.

[0004] In view of the above related technologies, during actual use, the screen holes of the screen cylinder are easily blocked by materials, thereby resulting in poor screening effects. Summary of the Invention

[0005] In order to improve the problem that the screen holes of the screen cylinder in related technologies are easily blocked by materials, this application provides a low-energy consumption drum screen for recycled concrete.

[0006] The low-energy consumption drum screen for recycled concrete provided by this application adopts the following technical solutions:

[0007] A low-energy consumption drum screen for recycled concrete, comprising a support frame, a screen drum, a driving assembly, a cleaning assembly and a lifting assembly, wherein a plurality of evenly distributed screen holes are formed through the surface of the screen drum, a feed port and a discharge port are respectively provided at both ends of the screen drum, the screen drum is rotatably connected to the support frame, the driving assembly is located on the support frame, and the driving assembly is used to drive the screen drum to rotate;

[0008] The cleaning assembly includes a cross bar and a cleaning rod. The cross bar is connected to the support frame through a lifting assembly. The lifting assembly is used to drive the cross bar to move up and down. A plurality of cleaning rods are provided. The plurality of cleaning rods are evenly spaced along the axial direction of the cross bar. The cleaning rods are used to clean the materials blocked in the sieve holes.

[0009] Optionally, the driving assembly includes a driving motor and a reducer, the housing of the driving motor is fixedly connected to a support frame, and the output shaft of the driving motor is fixedly connected to an end of the screen drum via the reducer.

[0010] Optionally, the lifting assembly includes a guide block, a sliding rod, a driving rod and a transmission part, one end of the sliding rod is fixedly connected to the guide block, a sliding bracket is fixedly connected to the support frame, one end of the sliding rod away from the guide block is vertically slidably connected to the sliding bracket, one end of the sliding rod away from the guide block is fixedly connected to the cross bar, and side walls of the guide block are respectively provided with connected arc slide grooves and linear slide grooves, the driving rod is connected to a driving motor through a transmission part, and the transmission part is used to drive the driving rod to rotate, and a sliding block is fixedly connected to the end of the driving rod, and the sliding block is slidably connected in the arc slide groove or the linear slide groove.

[0011] Optionally, the transmission part includes a belt and two pulleys, one pulley is coaxially fixedly connected to the output shaft of the driving motor, the end of the driving rod is fixedly connected to a rotating shaft, the driving rod is rotatably connected to the support frame via the rotating shaft, the other pulley is coaxially fixedly connected to the rotating shaft, and the belt tensioning sleeve is arranged on the two pulleys.

[0012] Optionally, the screen drum is arranged to be inclined downward along the direction from the feed inlet to the discharge outlet.

[0013] Optionally, the aperture of the sieve holes on the sieve cylinder gradually increases along the direction from the feed inlet to the discharge outlet.

[0014] Optionally, a plurality of annular convex strips distributed at intervals are fixedly connected to the inner wall of the screen cylinder.

[0015] In summary, the present application includes at least one of the following beneficial technical effects:

[0016] 1. When the screening cylinder of the present application rotates driven by the driving component, materials enter the screening cylinder from the feeding port. Through the screening effect of the screening holes, materials with different particle sizes are separated. At the same time, the cleaning rods in the cleaning component move up and down with the cross bar to clean the screening holes and prevent the screening holes from being blocked. The design of automatically cleaning the screening holes in the present application can effectively avoid the problem of poor screening effect caused by blocked screening holes, improve the screening efficiency, and reduce the cost and difficulty of manual cleaning.

[0017] 2. In the present application, the lifting component is connected to the driving motor through the transmission part. When the driving motor works, it not only drives the screening cylinder to rotate, but also drives the driving rod in the lifting component to rotate through the transmission part, thereby driving the cross bar and the cleaning rods to move up and down. Through the linkage design, the rotation of the screening cylinder and the cleaning of the screening holes can be carried out synchronously without an additional driving source, reducing energy consumption and improving the overall efficiency of the equipment. And the transmission part of the present application drives the cleaning rods to move up and down intermittently, thus avoiding interfering with the self-rotation of the screening cylinder and also avoiding the problem of excessive wear of the cleaning rods.

[0018] 3. The screening cylinder of the present application is inclined downward along the direction from the feeding port to the discharging port, so that the materials flow naturally under the combined action of gravity and the rotation of the screening cylinder. At the same time, the aperture of the screening holes on the screening cylinder gradually increases along the direction from the feeding port to the discharging port to meet the screening requirements of materials with different particle sizes. The combined design of inclination and gradual change of aperture can optimize the screening process, enable the materials to be fully screened and separated in the screening cylinder, improve the screening effect and product quality. At the same time, due to the gradual increase of the aperture of the screening holes, it can also effectively prevent the blockage and accumulation of materials during the screening process. Description of the Drawings

[0019] Figure 1 is the overall structural schematic diagram of a low-energy consumption drum screen for recycled concrete in an embodiment of the present application;

[0020] Figure 2 is the partial structural schematic diagram of the lifting component of a low-energy consumption drum screen for recycled concrete in an embodiment of the present application;

[0021] Figure 3 is the cross-sectional view of the screening cylinder of a low-energy consumption drum screen for recycled concrete in an embodiment of the present application.

[0022] Description of reference numerals: 1, support frame; 11, sliding bracket; 2, sieve drum; 21, feed inlet; 22, discharge outlet; 23, sieve holes; 24, annular rib; 3, drive assembly; 31, drive motor; 32, reducer; 4, cleaning assembly; 41, cross bar; 42, cleaning rod; 5, lifting assembly; 51, guiding block; 511, arc-shaped chute; 512, linear chute; 52, sliding rod; 53, drive rod; 531, rotating shaft; 532, slider; 54, transmission part; 541, belt; 542, pulley. Detailed implementation mode

[0023] The following is a further detailed description of the present application in conjunction with the attached Figures 1-3 drawings.

[0024] An embodiment of the present application discloses a low-energy consumption drum sieve for recycled concrete. Refer to Figure 1 FIGs.

[0025] Refer to Figure 1 and Figure 3 FIGs.

[0026] Refer to Figure 1 and Figure 2 FIGs.

[0027] Refer to Figure 1 and Figure 2The cleaning assembly 4 is located above the screen drum 2. The cleaning assembly 4 includes a cross bar 41 and a cleaning rod 42. The cross bar 41 is connected to the support frame 1 through a lifting assembly 5. The lifting assembly 5 is used to drive the cross bar 41 to move up and down. There are multiple cleaning rods 42, and the multiple cleaning rods 42 are evenly distributed along the axial direction of the cross bar 41. The cleaning rods 42 are used to clean the materials blocked in the screen holes 23. The cleaning rods 42 are made of rubber material with a certain hardness, which can ensure the cleaning effect while avoiding damage to the screen drum 2.

[0028] Reference Figure 1 and Figure 2 There are two lifting assemblies 5, which are located at both ends of the screen drum 2. The lifting assemblies 5 include a guide block 51, a sliding rod 52, a driving rod 53 and a transmission part 54. One end of the sliding rod 52 is fixedly connected to the guide block 51, and a sliding bracket 11 is fixedly connected to the support frame 1. One end of the sliding rod 52 away from the guide block 51 is vertically slidably connected to the sliding bracket 11, and one end of the sliding rod 52 away from the guide block 51 is fixedly connected to the cross bar 41.

[0029] Reference Figure 1 and Figure 2 The side walls of the guide block 51 are provided with connected arc-shaped slide grooves 511 and linear slide grooves 512, respectively. The driving rod 53 is connected to the driving motor 31 through a transmission part 54. The transmission part 54 includes a belt 541 and two pulleys 542. One pulley 542 is coaxially fixedly connected to the output shaft of the driving motor 31. The end of the driving rod 53 is fixedly connected to a rotating shaft 531. The driving rod 53 is rotatably connected to the support frame 1 through the rotating shaft 531. The other pulley 542 is coaxially fixedly connected to the rotating shaft 531. The belt 541 is tensioned and sleeved on the two pulleys 542. A D-shaped through hole for the driving rod 53 to move is provided inside the guide block 51. The transmission part 54 is used to drive the driving rod 53 to rotate. The end of the driving rod 53 is fixedly connected to a slider 532. The slider 532 is slidably connected in the arc-shaped slide groove 511 or the linear slide groove 512.

[0030] The implementation principle of a low-energy consumption drum screen for recycled concrete in an embodiment of this application is as follows: When the screen cylinder 2 is working, the driving motor 31 drives the screen cylinder 2 to rotate so as to achieve the screening effect. The driving motor 31 simultaneously drives the belt pulley 542 to rotate, and then drives the rotating shaft 531 at the top of the support frame 1 to rotate through the transmission of the belt 541. When rotating, it drives the driving rod 53 to rotate. When the driving rod 53 rotates, it drives the slider 532 to slide in the arc-shaped chute 511 or the linear chute 512. During the sliding process of the slider 532, it drives the guiding block 51 to rise and fall, and then drives the sliding rod 52 to slide in the sliding support 11, thereby driving the cross bar 41 to rise and fall. When the slider 532 slides in the linear chute 512, the cross bar 41 makes a lifting motion, and then drives the cleaning rod 42 to clean the sieve holes 23 on the screen cylinder 2. When the slider 532 continues to slide into the arc-shaped chute 511, the cross bar 41 rises and stops moving. The above-mentioned transmission part 54 can achieve intermittent cleaning of the screen cylinder 2, thus avoiding damage to the cleaning rod 42 and the screen cylinder 2, and also avoiding affecting the rotation of the screen cylinder 2. During the process of driving the screen cylinder 2 to rotate by the driving motor 31, the cleaning assembly 4 can be driven to work intermittently without an additional driving source, reducing energy consumption and improving the overall efficiency of the equipment.

[0031] The above are all the preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A low energy consumption drum screen for recycled concrete, characterized in that: The invention comprises a support frame (1), a screen drum (2), a driving assembly (3), a cleaning assembly (4) and a lifting assembly (5); a plurality of evenly distributed screen holes (23) are provided on the surface of the screen drum (2); a feed port (21) and a discharge port (22) are provided at both ends of the screen drum (2); the screen drum (2) and the support frame (1) are rotatably connected; the driving assembly (3) is located on the support frame (1); and the driving assembly (3) is used to drive the screen drum (2) to rotate; The cleaning assembly (4) comprises a cross bar (41) and a cleaning rod (42); the cross bar (41) is connected to the support frame (1) via a lifting assembly (5); the lifting assembly (5) is used to drive the cross bar (41) to move up and down; a plurality of cleaning rods (42) are provided; the plurality of cleaning rods (42) are evenly spaced along the axial direction of the cross bar (41); the cleaning rods (42) are used to clean the material blocked in the sieve hole (23); the cleaning rods (42) are made of rubber material.

2. The low energy consumption drum screen for recycled concrete according to claim 1, characterized in that: The drive assembly (3) comprises a drive motor (31) and a reducer (32); the housing of the drive motor (31) is fixedly connected to the support frame (1); and the output shaft of the drive motor (31) is fixedly connected to the end of the screen drum (2) via the reducer (32).

3. The low energy consumption drum screen for recycled concrete according to claim 2, characterized in that: The lifting assembly (5) comprises a guide block (51), a slide rod (52), a driving rod (53) and a transmission part (54); one end of the slide rod (52) is fixedly connected to the guide block (51); a sliding bracket (11) is fixedly connected to the support frame (1); one end of the slide rod (52) away from the guide block (51) is vertically slidably connected to the sliding bracket (11); and one end of the slide rod (52) away from the guide block (51) is fixedly connected to the cross bar (41). The guide block (51) has a side wall formed with a connected arc-shaped slide groove (511) and a linear slide groove (512). The drive rod (53) is connected to the drive motor (31) via a transmission part (54). The transmission part (54) is used to drive the drive rod (53) to rotate. The end of the drive rod (53) is fixedly connected with a slider (532). The slider (532) is slidably connected in the arc-shaped slide groove (511) or the linear slide groove (512).

4. The low energy consumption drum screen for recycled concrete according to claim 3, characterized in that: The transmission part (54) comprises a belt (541) and two pulleys (542); one pulley (542) is coaxially fixedly connected to the output shaft of the driving motor (31); the end of the driving rod (53) is fixedly connected to a rotating shaft (531); the driving rod (53) is rotatably connected to the support frame (1) via the rotating shaft (531); the other pulley (542) is coaxially fixedly connected to the rotating shaft (531); and the belt (541) is tensionedly sleeved on the two pulleys (542).

5. The low energy consumption drum screen for recycled concrete according to claim 1, characterized in that: The screen drum (2) is arranged to be inclined downward along the direction from the feed port (21) to the discharge port (22).

6. The low energy consumption drum screen for recycled concrete according to claim 1, characterized in that: The aperture of the sieve holes (23) on the sieve drum (2) gradually increases in the direction from the feed inlet (21) to the discharge outlet (22).

7. The low energy consumption drum screen for recycled concrete according to claim 1, characterized in that: A plurality of annular convex strips (24) distributed at intervals are fixedly connected to the inner wall of the screen cylinder (2).

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