Multi-stage vibrating screen for construction waste treatment

Abstract

The utility model discloses a multi-stage vibrating screen for construction waste treatment. The multi-stage vibrating screen comprises a base, a supporting column, a vibrating mechanism, a box body, a discharging hopper, a first screen, a second screen, a third screen, a first material receiving box, a second material receiving box, a third material receiving box and a fourth material receiving box. The first screen, the second screen and the third screen are arranged, the hole diameters of the screens are set from large to small, the screens are divided into the coarse screen, the medium screen and the fine screen, and multi-stage screening is achieved; a plurality of layers of transverse flow guide plates are sequentially arranged on the first screen, the second screen and the third screen from high to low, and the flow guide plates are sequentially distributed on the screens in a staggered mode, so that construction waste can slide on the screens for a longer time, and sufficient screening can be conducted on the screens many times. According to the multi-stage screening device, the multi-stage screening function is achieved, and meanwhile sufficient screening is carried out.

Description

Technical Field

[0001] The utility model relates to the technical field of construction waste treatment, in particular to a multi-stage vibrating screen for construction waste treatment. Background Technique

[0002] Construction waste refers to the broken bricks and tiles, floor bricks, concrete, waste steel and iron materials, muck, waste soil, waste materials, silt and other waste generated during the construction, laying or demolition, repair, and renovation of various buildings, structures, pipe networks, etc. by construction, construction units or individuals. With the acceleration of the industrialization and urbanization processes, the construction industry has also developed rapidly, and the accompanying construction waste has increased day by day. The amount of construction waste in China has accounted for more than 1 / 3 of the total urban waste; if not processed and utilized in time, it will surely have an adverse impact on society, the environment and resources. The treatment process of construction waste is as follows: First, the construction waste is fed into a jaw crusher for coarse crushing, and then conveyed to a counterattack crusher for fine crushing; then conveyed to a vibrating screen to screen out aggregates of different specifications; the aggregates that meet the particle size requirements of customers are conveyed to the finished material pile, and the aggregates larger than the upper screen mesh size are returned to the counterattack crusher through a belt conveyor for re-crushing, forming a closed-loop cycle to complete the processing of the aggregates. In the process, the vibrating screen is one of the important equipment for sorting and screening, and it is necessary to screen out aggregates of different specifications, and even requires multiple screening processes.

[0003] For example, the Chinese patent with the publication number CN115971051A discloses a vibrating screen for screening construction waste, including a screen box, and also including a number of screen plate assemblies. The number of screen plate assemblies is arranged in the screen box with a certain height difference, and the screen plate assemblies are provided with mesh holes. The number of screen plate assemblies is a mesh hole stepped screen surface that slopes downward from the material receiving plate to the discharge port, and the mesh holes of the mesh hole stepped screen surface gradually expand from the material receiving plate to the discharge port. The vibrating screen provided by the invention can perform grading screening according to the shape of the construction waste material, effectively improve the screening efficiency, and can accelerate the loose stratification of the material to the greatest extent; it can meet the screening requirements of materials with complex and diverse components such as decoration waste and construction waste. There are various modular screen plate combination forms to choose from, with strong screening adaptability, and can be flexibly configured according to the material requirements to improve the classification and recycling utilization rate of materials such as decoration waste and improve the screening accuracy of the materials.

[0004] As disclosed in the Chinese patent with the publication number CN218691340U, a vibrating screen in construction waste treatment is provided, which includes a vibrating box. A knob is movably installed at the top end of the vibrating box. First grooves and second grooves are formed on both inner walls of the vibrating box. The same first screening plate is slidably installed inside each first groove. Two first fixing blocks are fixedly installed at the lower end of the first screening plate. The same second screening plate is slidably installed inside each second groove. Through the screening of the second screening plate, the waste powder is vibrated onto the surface of the discharge chute. The waste screened and vibrated into the discharge chute is discharged through the discharge port. In specific operations, the discharge plate can be pulled to one side by pressing the second button. Through the discharge plate, the waste screened out at different positions can be effectively prevented from piling up together after vibration screening, increasing the functions during use.

[0005] Although the above invention realizes the function of multi-stage screening, the residence time of construction waste on each screen is short and the screening process is fast, so a sufficient screening process cannot be carried out and completed. Summary of the Invention

[0006] The purpose of the present utility model is to solve the deficiencies of the prior art and provide a multi-stage vibrating screen for construction waste treatment.

[0007] To achieve the above purpose, the present utility model provides the following technical solutions:

[0008] A multi-stage vibrating screen for construction waste treatment includes a base, support columns, a vibration mechanism, a box body, a feeding hopper, a first screen, a second screen, a third screen, a first collection box, a second collection box, a third collection box, and a fourth collection box.

[0009] The base is a rectangular matrix welded by 4 pipes in the horizontal direction. 4 support columns are erected upward at the four corner edges of the base. The lower ends of the support columns are respectively fixedly connected to the base. The upper ends of each support column are respectively connected to the box body through a vibration mechanism. The vibration mechanism includes a spring and a cushion plate. The lower end of the spring is embedded in the support column, and the upper end of the spring is connected to the cushion plate. The box body is installed on the cushion plate. The box body is a cuboid box. A feeding hopper is arranged at the upper right of the top of the box body. The feeding hopper is funnel-shaped. An inclined guide plate is arranged at the bottom of the feeding hopper. The tail end of the guide plate is connected to the first screen. The second screen and the third screen are sequentially arranged below the first screen. The first screen, the second screen, and the third screen are all inclined rectangular screens. The first collection box, the second collection box, and the third collection box are sequentially arranged at the edges of the first screen, the second screen, and the third screen. A discharge hopper is arranged directly below the third screen. A fourth collection box is arranged below the discharge hopper.

[0010] Preferably, the screen apertures of the first screen, the second screen, and the third screen are set from large to small.

[0011] By adopting the above technical solution, the first screen, the second screen, and the third screen are divided into three screens: a coarse screen, a medium screen, and a fine screen, realizing multi-stage screening.

[0012] Preferably, on the first screen, the second screen, and the third screen, multiple layers of horizontal flow guiding plates are arranged in sequence from high to low. The flow guiding plates are inclined baffles and are alternately distributed on the screen.

[0013] By adopting the above technical solution, the multiple layers of flow guiding plates can prevent construction waste from directly falling from the top to the bottom of the screen. Instead, through the multiple layers of flow guiding plates, the construction waste can slide on the screen for a longer time and can be fully screened on the screen multiple times.

[0014] Preferably, the first screen, the second screen, and the third screen are alternately and inclinedly arranged with each other in sequence.

[0015] By adopting the above technical solution, the inclined screen facilitates the free sliding of construction waste from high to low along the inclined angle, and the alternately arranged screens facilitate the construction waste to sequentially pass through the first screen, the second screen, and the third screen from top to bottom.

[0016] Preferably, a plurality of foot pads are arranged at the bottom of the base, and anti-slip pads are arranged at the lower ends of the plurality of foot pads.

[0017] By adopting the above technical solution, vibration is reduced during the operation of the multi-stage vibrating screen, making the operation of the multi-stage vibrating screen more stable.

[0018] The beneficial effects of the present utility model are as follows:

[0019] 1. The first screen, the second screen, and the third screen are provided, and the screen apertures are set from large to small. The screens are divided into three screens: a coarse screen, a medium screen, and a fine screen, realizing multi-stage screening;

[0020] 2. On the first screen, the second screen, and the third screen, multiple layers of horizontal flow guiding plates are arranged in sequence from high to low. The flow guiding plates are alternately distributed on the screen, enabling the construction waste to slide on the screen for a longer time and allowing for multiple full screenings on the screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, other implementation drawings can be obtained by extension based on the provided drawings without creative efforts.

[0022] The structures, proportions, sizes, etc. shown in this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the implementation conditions of the present invention. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention.

[0023] Figure 1 It is a schematic structural diagram of a multi-stage vibrating screen for construction waste treatment proposed by the present utility model.

[0024] Figure 1 As shown in the figure: 1. Base, 2. Support column, 3. Vibration mechanism, 4. Box body, 5. Feeding hopper, 6. First screen, 7. Second screen, 8. Third screen, 9. First receiving box, 10. Second receiving box, 11. Third receiving box, 12. Fourth receiving box.

[0025] Figure 2 It is a schematic structural diagram of the screen of the multi-stage vibrating screen proposed by the present utility model. Specific embodiments

[0026] To make the purposes, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model to be protected, but only represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the scope of protection of the present utility model.

[0028] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0029] It should be noted that similar reference numerals and letters are likely to represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0030] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present utility model. In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "linked" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] Refer to Figure 1 , a multi-stage vibrating screen for construction waste treatment disclosed by the present utility model includes a base 1, support columns 2, a vibration mechanism 3, a box body 4, a feeding hopper 5, a first screen 6, a second screen 7, a third screen 8, a first collection box 9, a second collection box 10, a third collection box 11, and a fourth collection box 12.

[0033] Four support columns 2 are erected upward at the edge of the rectangular base body of the base 1. The base 1 and the support columns 2 are used to support the box body 4; the upper ends of each support column 2 are respectively connected to the box body 4 through the springs and pads of the vibration mechanism 3; a feeding hopper 5 is arranged at the upper right of the top of the box body 4; an inclined guide plate is arranged at the bottom of the feeding hopper 5. On the one hand, the inclined guide plate can slow down the impact speed of the construction waste during feeding, and on the other hand, it can make the construction waste slide down along the inclined angle for screening; the end of the guide plate is connected to the first screen 6. The second screen 7 and the third screen 8 which are arranged alternately are arranged below the first screen 6 in sequence to form a coarse screen, a medium screen, and a fine screen in sequence; the first collection box 9, the second collection box 10, and the third collection box 11 are arranged at the edges of the first screen 6, the second screen 7, and the third screen 8 in sequence to form collection boxes for the coarse screen, the medium screen, and the fine screen in sequence; a fourth collection box 12 is arranged below the storage hopper below the third screen 8 to form an ultra-fine collection box.

[0034] In an alternative embodiment, the first screen 6, the second screen 7, and the third screen 8 are inclined to facilitate the sliding of construction waste from a high place to a low place due to its own gravity; when the multi-stage vibrating screen is working, the construction waste generates impact and vibration when falling along the feeding hopper 5, causing the springs of the vibration mechanism 3 to compress, and at the same time causing the box body 4 and the screen to vibrate, facilitating the sliding of the construction waste on the screen.

[0035] In an alternative embodiment, multiple layers of transverse diversion plates are arranged on the first screen 6, the second screen 7, and the third screen 8 from high to low in sequence. The inclined diversion plates are alternately distributed on each screen in sequence. The construction waste changes its sliding trajectory according to the direction of the diversion plates from top to bottom on each screen, from the high place to the low place of the first layer of diversion plate, and then falls to the second layer of diversion plate from the high place to the low place, passing through multiple layers of diversion plates in sequence and reaching the bottom of each screen.

[0036] This embodiment takes the screening process of the multi-stage vibrating screen as an example to illustrate its working principle and process.

[0037] When the construction waste falls from the feeding hopper 5 onto the inclined guide plate, it changes its falling direction and slides along the guide plate onto the coarse screening screen, the first screen 6. It slides from the high place to the low place of the first layer of diversion plate of the first screen 6, and then onto the second layer of diversion plate of the first screen 6 from the high place to the low place, passing through multiple layers of diversion plates of the first screen 6 in sequence. During the sliding process of the construction waste on the first screen 6, the particles smaller than the mesh aperture of the first screen 6 pass through the screen and fall onto the medium screening screen, the second screen 7. The particles larger than the mesh aperture of the first screen 6 cannot pass through the screen and slide to the edge of the screen and fall into the coarse screening collection box, the first collection box 9.

[0038] On the second screen 7, the construction waste slides from the high place to the low place of the first layer of diversion plate of the second screen 7, and then onto the second layer of diversion plate of the second screen 7 from the high place to the low place, passing through multiple layers of diversion plates of the second screen 7 in sequence. During the sliding process of the construction waste on the second screen 7, the particles smaller than the mesh aperture of the second screen 7 pass through the screen and fall onto the fine screening screen, the third screen 8. The particles larger than the mesh aperture of the second screen 7 cannot pass through the screen and slide to the edge of the screen and fall into the medium screening collection box, the second collection box 10.

[0039] On the third screen 8, the construction waste slides from the high place to the low place of the first layer of diversion plate of the third screen 8, and then onto the second layer of diversion plate of the third screen 8 from the high place to the low place, passing through multiple layers of diversion plates of the third screen 8 in sequence. During the sliding process of the construction waste on the third screen 8, the particles smaller than the mesh aperture of the third screen 8 pass through the screen and then fall into the ultra-fine collection box, the fourth collection box 12 through the discharge hopper. The particles larger than the mesh aperture of the third screen 8 cannot pass through the screen and slide to the edge of the screen and fall into the fine screening collection box, the third collection box 11.

[0040] Certainly, the embodiments of this specific implementation manner are all preferred embodiments of the present utility model, and do not limit the protection scope of the present utility model accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present utility model shall be covered within the protection scope of the present utility model.

Claims

1. A multi-stage vibrating screen for construction waste treatment, characterized in that: It includes a base (1), support columns (2), a vibration mechanism (3), a box body (4), a feeding hopper (5), a first screen (6), a second screen (7), a third screen (8), a first material collecting box (9), a second material collecting box (10), a third material collecting box (11), and a fourth material collecting box (12). The base (1) is formed by welding 4 pipes horizontally into a rectangular matrix. At the four corner edges of the base (1), 4 support columns (2) stand upright. The lower ends of the support columns (2) are respectively fixedly connected to the base (1), and the upper ends of each support column (2) are respectively connected to the box body (4) through the vibration mechanism (3). The vibration mechanism (3) includes a spring and a backing plate. The lower end of the spring is embedded in the support column (2), the upper end of the spring is connected to the backing plate, and the box body (4) is connected and installed on the backing plate. The box body (4) is a cuboid box body, and a feeding hopper (5) is arranged at the upper right of the top of the box body (4). The feeding hopper (5) is funnel-shaped, and an inclined material guiding plate is arranged at the bottom of the feeding hopper (5), and the tail end of the material guiding plate is connected to the first screen (6). The second screen (7) and the third screen (8) are sequentially arranged below the first screen (6). The first screen (6), the second screen (7), and the third screen (8) are all inclined rectangular screens, and the first screen (6), the second screen (7), and the third screen (8) are sequentially arranged obliquely and staggered with each other. On the first screen (6), the second screen (7), and the third screen (8), multiple layers of transverse flow guiding plates are sequentially arranged from high to low. The flow guiding plates are inclined baffles and are sequentially arranged in a staggered manner on the screens. At the edges of the first screen (6), the second screen (7), and the third screen (8), a first material collecting box (9), a second material collecting box (10), and a third material collecting box (11) are sequentially arranged. A discharge hopper is arranged directly below the third screen (8), and a fourth material collecting box (12) is arranged below the discharge hopper.

2. The multi-stage vibrating screen for construction waste treatment according to claim 1, wherein: The screen apertures of the first screen (6), the second screen (7), and the third screen (8) are set from large to small.

3. The multi-stage vibrating screen for construction waste treatment according to claim 1, characterized in that: A number of cushion feet are arranged at the bottom of the base (1), and anti-slip pads are arranged at the lower ends of the number of cushion feet.

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