Construction waste screening machine

Abstract

The utility model discloses a construction waste screening machine, belongs to the technical field of construction waste screening machines, and adopts the technical scheme that the construction waste screening machine comprises a bottom plate, and a screening barrel is arranged at the top of the bottom plate. The crushed construction waste can be classified and screened by matching with the screening net with the screening holes with the diameters from small to large, micro materials, fine materials, medium materials and coarse materials are accurately classified, the driving structure drives the screening net and the internal spiral conveying blades to synchronously rotate, and the crushed construction waste enters from the left side of the screening net and then enters the screening net. The materials are gradually pushed rightwards by the rotating spiral conveying blades, the materials pass through the screening holes with different hole diameters in the moving process and fall into the discharging hoppers corresponding to the material cavities to be discharged, screening and classification are completed, and meanwhile the situation that crushed construction waste blocks the screening holes can be reduced through inertia generated when the screening net rotates.

Description

A construction waste screening machine Technical Field

[0001] This utility model relates to the technical field of construction waste screening machines, and in particular to a construction waste screening machine. Background Technology

[0002] Construction projects refer to all kinds of buildings and engineering facilities that provide the material and technical foundation for human life and production. A large amount of construction waste is generated during construction projects. When recycling construction waste, it is necessary to crush the waste first, and then classify the waste through a waste screening machine to facilitate subsequent processing.

[0003] However, when this device is used, it is mostly screened by vibrating screen or drum screen. When using drum screen, because the crushed construction waste is of different sizes, the screening machine is difficult to screen the construction waste of different sizes in detail, and secondary sorting is required. This is inconvenient for people to reuse, and is time-consuming and labor-intensive.

[0004] An existing patent (publication number: CN219377460U) discloses a construction waste screening machine. This utility model starts a motor, which drives the rotating shaft on the output end of the motor to rotate, and causes the auger fixed on the rotating shaft to rotate. When the waste is poured into the feeding box, the crushing roller is driven by the sprocket and chain on the output end of the motor to crush it. The crushed waste enters the screening cylinder and is transported into the device by the auger. During the movement, the waste falls through the screening holes of different sizes on the screening screen and is collected by the collection box.

[0005] To address the aforementioned issues, existing patents have provided solutions. However, in the construction waste screening machine proposed in the aforementioned patents, the screening screen of the screening cylinder is used to screen the crushed waste conveyed by the auger. As the construction waste is crushed, it will be irregularly shaped. Due to the lack of a cleaning structure, long-term operation will inevitably lead to material jamming or clogging in the screening holes, resulting in a decrease in screening efficiency and the need for frequent maintenance.

[0006] Therefore, a construction waste screening machine is proposed. Summary of the Invention

[0007] The purpose of this utility model is to provide a construction waste screening machine that can solve the problem in the construction waste screening machine proposed in the above-mentioned patent. During the screening process of crushed waste conveyed by the auger, the construction waste is crushed and then becomes irregularly shaped. Due to the lack of a cleaning structure, the screening holes will inevitably become stuck or clogged after long-term operation, resulting in a decrease in screening efficiency and the need for frequent maintenance.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a construction waste screening machine, including a base plate, a screening cylinder arranged on the top of the base plate, a controller arranged on the top of the base plate, a screening mechanism arranged inside the screening cylinder, and a crushing structure arranged on the left side of the screening cylinder;

[0009] The screening mechanism includes a screen rotatably connected inside a screening cylinder. Partitions are fixedly connected to both sides and the middle of the screen surface. These partitions are rotatably connected inside the screening cylinder, and adjacent partitions divide the screening cylinder into a micro-material chamber, a fine material chamber, a medium material chamber, and a coarse material chamber. Screening holes are provided on the periphery of the screen corresponding to the micro-material chamber, fine material chamber, medium material chamber, and coarse material chamber, with the hole diameter increasing from small to large according to the discharge direction. A drive structure is provided on the right side of the screen. Spiral conveyor blades are fixedly connected inside the screen. A cleaning brush is bolted to the top side inside the screening cylinder, with its bottom located at the top of the screen. A discharge hopper is connected to the bottom of the screening cylinder.

[0010] Preferably, the crushing structure includes a feed pipe connected to the left side of the screening cylinder, the feed pipe being located in the middle of the left side of the screening cylinder, and a hopper being connected to the top of the feed pipe.

[0011] Preferably, a crushing motor is bolted to both sides of the rear side of the hopper, the crushing motor is electrically connected to the controller, and the output end of the crushing motor passes through the rear side of the hopper.

[0012] Preferably, the output end of the crushing motor is fixedly connected to a crushing roller, which is located on both sides inside the hopper.

[0013] Preferably, the drive structure includes a support sleeve bolted to the top right side of the base plate, and a variable frequency motor is installed inside the support sleeve. The variable frequency motor is electrically connected to the controller.

[0014] Preferably, a drive rod is fixedly connected to the output end of the variable frequency motor, and the left side of the drive rod is fixedly connected to the right side of the screening screen.

[0015] Preferably, receiving hoppers are provided on both sides of the top of the base plate, and the receiving hoppers are located at the bottom of the discharge hopper.

[0016] Preferably, inclined slide plates are welded to both sides inside the hopper, and the inclined slide plates are located on top of the crushing roller.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This application, by setting up a screening mechanism, uses a partition plate to divide the screening cylinder into micro-material chambers, fine material chambers, medium material chambers, and coarse material chambers. With the help of a screening screen with screen apertures ranging from small to large, it can classify and screen the crushed construction waste, achieving precise classification of micro-materials, fine material, medium material, and coarse material. The drive structure drives the screening screen and the internal spiral conveyor blades to rotate synchronously. After the crushed construction waste enters from the left side of the screening screen, it is gradually pushed to the right by the rotating spiral conveyor blades. During the movement, the material falls into the discharge hopper corresponding to each material chamber through the screening holes of different apertures, completing the screening and classification. At the same time, the inertia generated by the rotation of the screening screen can reduce the clogging of the screening holes by the crushed construction waste. In addition, the cleaning brush on the top side of the screen cylinder continuously cleans the outside of the screening holes when the screening screen rotates. The combination of rotational inertia and cleaning further reduces the risk of material jamming and blockage, ensures stable screening efficiency, and reduces maintenance frequency.

[0019] 2. By setting up a crushing structure, this application can pre-crush construction waste, reduce the particle size of the construction waste, reduce the risk of large pieces of construction waste directly entering the screening mesh and causing the screening holes to become clogged, and at the same time provide construction waste of suitable particle size for subsequent grading and screening, ensuring the smoothness of the screening process. Attached Figure Description

[0020] Figure 1 is an overall structural diagram of the construction waste screening machine of this utility model;

[0021] Figure 2 is a structural diagram of the screening cylinder of this utility model;

[0022] Figure 3 is a structural diagram of the crushing structure of this utility model;

[0023] Figure 4 is a structural diagram of the screening mechanism of this utility model;

[0024] Figure 5 is a structural diagram of the drive structure of this utility model.

[0025] In the diagram, 1. Base plate; 2. Screening cylinder; 3. Controller; 4. Screening mechanism; 41. Screening screen; 42. Partition plate; 43. Screening hole; 44. Drive structure; 441. Support sleeve; 442. Variable frequency motor; 443. Drive rod; 45. Spiral conveyor blades; 46. Cleaning brush; 47. Discharge hopper; 5. Crushing structure; 51. Feed pipe; 52. Hopper; 53. Crushing motor; 54. Crushing roller; 6. Receiving hopper; 7. Inclined slide plate. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please refer to Figures 1-5. The technical solution provided by this utility model is as follows:

[0028] A construction waste screening machine includes a base plate 1, a screening cylinder 2 is provided on the top of the base plate 1, a controller 3 is provided on the top of the base plate 1, a screening mechanism 4 is provided inside the screening cylinder 2, and a crushing structure 5 is provided on the left side of the screening cylinder 2.

[0029] The screening mechanism 4 includes a screening screen 41 rotatably connected inside the screening cylinder 2. Partitions 42 are fixedly connected to both sides and the middle of the screening screen 41. The partitions 42 are rotatably connected inside the screening cylinder 2. Adjacent partitions 42 divide the screening cylinder 2 into a micro-material chamber, a fine material chamber, a medium material chamber, and a coarse material chamber. Screening holes 43 are provided on the periphery of the screening screen 41 corresponding to the positions of the micro-material chamber, fine material chamber, medium material chamber, and coarse material chamber. The diameter of the screening holes 43 is arranged from small to large according to the discharge direction. A drive structure 44 is provided on the right side of the screening screen 41. A spiral conveyor blade 45 is fixedly connected inside the screening screen 41. A cleaning brush 46 is bolted to the top side inside the screening cylinder 2. The bottom of the cleaning brush 46 is located at the top of the screening screen 41. A discharge hopper 47 is connected to the bottom of the screening cylinder 2.

[0030] In this embodiment: by setting up a screening cylinder 2, a controller 3, a crushing structure 5, and a screening mechanism 4, construction waste is first pre-crushed to a suitable particle size by the left crushing structure 5 to reduce particle size differences and reduce the risk of screen clogging. Then, the material enters the screening screen 41 inside the screening cylinder 2. The controller 3 controls the drive structure 44 to drive the screening screen 41 and the internal spiral conveyor blades 45 to rotate. The rotating spiral conveyor blades 45 are fixed inside the screening screen 41 in a spiral shape. The spiral surface generates axial thrust through rotation. The rotational motion is converted into the axial movement force of the material by the inclination angle of the spiral line. At the same time, the friction between the material and the spiral conveyor blades 45, the inner wall of the screening screen 41, and the blocking effect of the screening holes 43 cause the material that has not passed through the screening holes 43 to move along the spiral. The direction moves continuously from the left side of the screening screen 41 to the right, realizing simultaneous conveying and screening. This ensures that the material passes evenly through the screening holes 43 of different diameters. During the process, the micro-material chamber, fine material chamber, medium material chamber, and coarse material chamber are separated by the partition plate 42. In conjunction with the screening screen 41 with the increasing diameter of the screening holes 43, the material is graded and screened. Particles of different sizes fall into the bottom discharge hopper 47 through the corresponding screening holes 43 and are discharged, completing the classification. At the same time, the inertia of the rotating screening screen 41 helps to reduce material jamming. The cleaning brush 46 on the top side inside the screening cylinder 2 continuously cleans the outside of the screening holes 43 of the rotating screening screen 41. The double anti-clogging design ensures stable screening efficiency, reduces maintenance frequency, and the overall process is smooth and efficient, improving the accuracy and reliability of construction waste screening.

[0031] Specifically, as shown in Figure 3, the crushing structure 5 includes a feed pipe 51 connected to the left side of the screening cylinder 2. The feed pipe 51 is located in the middle of the left side of the screening cylinder 2, and the top of the feed pipe 51 is connected to a hopper 52.

[0032] Specifically, as shown in Figure 3, crushing motors 53 are bolted to both sides of the rear side of the hopper 52. The crushing motors 53 are electrically connected to the controller 3, and the output end of the crushing motors 53 passes through the rear side of the hopper 52.

[0033] Specifically, as shown in Figure 3, the output end of the crushing motor 53 is fixedly connected to the crushing roller 54, which is located on both sides inside the hopper 52.

[0034] In this embodiment: by setting the crushing structure 5, construction waste is poured into the top of the hopper 52 and falls between the crushing rollers 54 inside the hopper 52. The controller 3 controls the crushing motor 53 to drive the crushing rollers 54 to rotate, crushing large pieces of material. The crushed material is then conveyed to the screening screen 41 in the screening cylinder 2 through the feed pipe 51. The pre-crushing process can reduce the difference in material particle size and reduce the risk of large pieces of material directly entering the screening screen 41 and causing the screening holes 43 to become blocked. At the same time, it provides uniformly sized material for subsequent grading and screening, ensuring the smoothness and efficiency of the screening process.

[0035] Specifically, as shown in Figure 5, the drive structure 44 includes a support sleeve 441 bolted to the top right side of the base plate 1. A variable frequency motor 442 is installed inside the support sleeve 441, and the variable frequency motor 442 is electrically connected to the controller 3.

[0036] Specifically, as shown in Figure 5, a drive rod 443 is fixedly connected to the output end of the variable frequency motor 442, and the left side of the drive rod 443 is fixedly connected to the right side of the screen 41.

[0037] In this embodiment: by setting up a drive structure 44, the controller 3 controls the variable frequency motor 442 to output power, and the drive rod 443 drives the screening screen 41 and the internal spiral conveyor blades 45 to rotate synchronously. The spiral surface of the spiral conveyor blades 45 generates axial thrust through rotation. Combined with the friction between the material and the spiral conveyor blades 45, the inner wall of the screening screen 41, and the blocking effect of the screening holes 43, the material is continuously pushed from the left side of the screening screen 41 to the right, realizing simultaneous conveying and screening. The variable frequency motor 442 can adjust the speed to adapt to the screening requirements of different materials, ensuring that the material passes evenly through the screening holes 43 of different diameters, improving the accuracy and flexibility of grading and screening.

[0038] Specifically, as shown in Figure 2, receiving hoppers 6 are provided on both sides of the top of the base plate 1, and the receiving hoppers 6 are located at the bottom of the discharge hopper 47.

[0039] Specifically, as shown in Figure 3, inclined slide plates 7 are welded to both sides inside the hopper 52, and the inclined slide plates 7 are located on the top of the crushing roller 54.

[0040] In this embodiment: by setting up receiving hopper 6 and inclined slide plate 7, materials of different particle sizes discharged from bottom discharge hopper 47 of screening cylinder 2 fall directly into receiving hopper 6 at different positions below, realizing classified collection, avoiding material scattering, facilitating subsequent reprocessing, improving the practicality and ease of operation of the equipment. In addition, the inclined slide plate 7 is inclinedly set on the top of crushing roller 54, guiding the material poured into hopper 52 to slide towards the middle, ensuring that the material falls accurately between crushing rollers 54, and improving crushing efficiency.

[0041] Working Principle: During the operation of the construction waste screening machine, construction waste is first poured into the top of the hopper 52. The inclined slide plates 7 on both sides inside the hopper 52 guide the material to slide towards the center, precisely falling between the crushing rollers 54. The controller 3 controls the crushing motor 53 to start, driving the crushing rollers 54 to rotate, crushing large pieces of construction waste. The crushed material is then conveyed through the feed pipe 51 to the screening screen 41 inside the screening cylinder 2. At this time, the controller 3 controls the variable frequency motor 442 to drive the screening screen 41 and the internal spiral conveying blades 45 to rotate synchronously via the drive rod 443. The spiral conveying blades 45 are fixed inside the screening screen 41 in a spiral shape. When the spiral surface rotates, it generates axial thrust. Combined with the friction between the material and the blades, the inner wall of the screening screen 41, and the blocking effect of the screening holes 43, the material is continuously pushed from the left side of the screening screen 41 to the right, realizing simultaneous conveying and screening. The partition plate 42 on the surface of the screen 41 divides the screening cylinder 2 into a micro material chamber, a fine material chamber, a medium material chamber, and a coarse material chamber. The screening holes 43 on the periphery of the screen 41 are set from small to large according to the discharge direction. As the material moves to the right, particles of different sizes pass through the corresponding screening holes 43 in sequence, fall into the bottom discharge hopper 47 and are discharged, and finally fall into the receiving hopper 6 below to complete the classification and collection. During the screening process, the inertia generated by the rotation of the screen 41 can help reduce the material from blocking the screening holes 43. At the same time, the cleaning brush 46 on the top side inside the screening cylinder 2 continuously cleans the outside of the screening holes 43 of the rotating screen 41. The double anti-clogging design avoids screen hole blockage and ensures stable screening efficiency. The entire process, through pre-crushing, grading screening and rotating brush anti-clogging design, realizes the continuous and efficient processing of construction waste from crushing to grading, anti-clogging and collection, improving the screening accuracy and equipment practicality.

[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A construction waste screening machine, comprising a base plate (1), characterized in that: A sieve cylinder (2) is provided on the top of the base plate (1), a controller (3) is provided on the top of the base plate (1), a sieve mechanism (4) is provided inside the sieve cylinder (2), and a crushing structure (5) is provided on the left side of the sieve cylinder (2); the sieve mechanism (4) includes a screen (41) rotatably connected to the inside of the sieve cylinder (2), and partitions (42) are fixedly connected to both sides and the middle of the surface of the screen (41). The partitions (42) are rotatably connected to the inside of the sieve cylinder (2), and adjacent partitions (42) divide the sieve cylinder (2) into a micro material chamber, a fine material chamber, and a medium material chamber. The screening screen (41) has screening holes (43) on its periphery corresponding to the micro material chamber, fine material chamber, medium material chamber and coarse material chamber. The size of the screening holes (43) is set from small to large according to the discharge direction. A driving structure (44) is provided on the right side of the screening screen (41). A spiral conveyor blade (45) is fixedly connected inside the screening screen (41). A cleaning brush (46) is bolted to the top side inside the screening cylinder (2). The bottom of the cleaning brush (46) is located at the top of the screening screen (41). The bottom of the screening cylinder (2) is connected to a discharge hopper (47).

2. The construction waste screening machine according to claim 1, characterized in that: The crushing structure (5) includes a feed pipe (51) connected to the left side of the screening cylinder (2), the feed pipe (51) being located in the middle of the left side of the screening cylinder (2), and the top of the feed pipe (51) being connected to a hopper (52).

3. A construction waste screening machine according to claim 2, characterized in that: Crushing motors (53) are bolted to both sides of the rear side of the hopper (52). The crushing motors (53) are electrically connected to the controller (3). The output end of the crushing motors (53) passes through the rear side of the hopper (52).

4. A construction waste screening machine according to claim 3, characterized in that: The output end of the crushing motor (53) is fixedly connected to a crushing roller (54), which is located on both sides inside the hopper (52).

5. A construction waste screening machine according to claim 1, characterized in that: The drive structure (44) includes a support sleeve (441) bolted to the top right side of the base plate (1), and a variable frequency motor (442) is installed inside the support sleeve (441). The variable frequency motor (442) is electrically connected to the controller (3).

6. A construction waste screening machine according to claim 5, characterized in that: The output end of the variable frequency motor (442) is fixedly connected to a drive rod (443), and the left side of the drive rod (443) is fixedly connected to the right side of the screening screen (41).

7. A construction waste screening machine according to claim 1, characterized in that: The bottom plate (1) is provided with receiving hoppers (6) on both sides of the top, and the receiving hoppers (6) are located at the bottom of the discharge hopper (47).

8. A construction waste screening machine according to claim 2, characterized in that: Both sides of the hopper (52) are welded with inclined slide plates (7), which are located on top of the crushing roller (54).

Images