Building waste crushing device

Abstract

The utility model discloses a building waste crushing device which comprises a shell, a primary crushing mechanism, a screening assembly and a secondary crushing mechanism, the primary crushing mechanism, the screening assembly and the secondary crushing mechanism are arranged in the shell, the primary crushing mechanism is arranged on the upper portion in one end of the screening assembly, and the secondary crushing mechanism is arranged on the lower portion of the other end of the screening assembly. The screening assembly comprises a plurality of screening plates connected end to end, and each screening plate can rotate in the shell so as to adjust the inclination angle between the screening plate and the horizontal plane. When crushed building waste falls at the feeding end of the screening plate in a free falling mode in a concentrated mode, the local material accumulation phenomenon can be formed, the downward flowing speed of the building waste is controlled by adjusting the inclination angles of the screening faces of the first screening plate and the second screening plate, the material retention time is prolonged, and therefore the screening efficiency can be improved.

Description

Technical Field

[0001] This application relates to the field of crushing technology, specifically to a crushing device for construction waste. Background Technology

[0002] Utility model announcement CN222000007U discloses a construction waste crushing device, relating to the field of construction waste crushing technology. It includes a fixed box, with a primary crushing mechanism on the top of the fixed box for crushing construction waste. In this utility model, starting a motor causes two crushing rollers (one and two) to rotate in opposite directions. The two crushing rollers crush the construction waste, which falls onto a screening plate. Due to the impact of the falling waste, the screening plate slides within a rectangular groove, compressing a spring. The spring's restoring force returns the plate to its original position, generating a vibration frequency that screens the crushed construction waste on the screening plate. Larger particles of construction waste, due to the tilt angle of the screening plate, slide between the two crushing rollers (two). The two crushing rollers then rotate to further crush the larger particles of construction waste.

[0003] In construction waste processing systems, materials are first crushed by primary crushing rollers and then enter the feed end of the screening plate. This process presents a technical challenge: when the crushed material falls freely onto the feed end of the screening plate, localized material accumulation occurs. To ensure that the accumulated material can smoothly slide and disperse along the screen surface, current solutions typically increase the screen inclination angle. However, this design strategy has significant process defects: an excessively large screen inclination angle leads to the following problems: the material on the surface of the screen falls too quickly, while the material at the bottom is compressed and forced to flow downwards, resulting in insufficient effective screening time on the screen surface. This prevents the completion of the vibration separation process required for particle size classification, leading to a decrease in screening efficiency. Utility Model Content

[0004] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a construction waste crushing device, the technical solution of which includes:

[0005] A construction waste crushing device includes a housing and a primary crushing mechanism, a screening assembly, and a secondary crushing mechanism disposed within the housing. The primary crushing mechanism is disposed above one end of the screening assembly, and the secondary crushing mechanism is disposed below the other end of the screening assembly. The screening assembly includes a plurality of screen plates connected end to end, and each screen plate can be rotated within the housing to adjust its inclination angle with the horizontal plane.

[0006] The technical solution adopted by one embodiment of this utility model to solve its technical problem is as follows: the screening component includes a first screen plate and a second screen plate. One end of the first screen plate and the second screen plate are rotatably mounted on the outer shell and close to each other. The other ends of the two screen plates are movably connected to the outer shell. The outer shell is provided with two first driving members. The two first driving members are used to drive the other ends of the first screen plate and the second screen plate to rotate around the rotatable connection point with the outer shell.

[0007] The technical solution adopted by one embodiment of this utility model to solve its technical problem is as follows: the first driving member is a telescopic rod, the outer shell is provided with two arc-shaped grooves, the other ends of the first sieve plate and the second sieve plate are respectively installed in the arc-shaped grooves and can move in the arc-shaped grooves respectively, the first driving member is rotatably installed on the outer shell, and the telescopic end of the first driving member is rotatably connected to the first sieve plate or the second sieve plate.

[0008] The technical solution adopted by one embodiment of this utility model to solve its technical problem is as follows: one end of the first sieve plate and the second sieve plate are respectively connected to the outer shell through the first elastic element, and the other end of the two are respectively connected to the first driving element through the second elastic element. Vibrators are respectively installed on the first sieve plate and the second sieve plate.

[0009] The technical solution adopted by one embodiment of this utility model to solve its technical problem is as follows: it further includes a third sieve plate, which is installed on the outer shell and located on the side of the second sieve plate away from the first sieve plate. One end of the third sieve plate is hinged to the second sieve plate, and the other end of the third sieve plate is movably installed on the outer shell. The second driving member is connected to the other end of the third sieve plate through a connecting rod assembly.

[0010] The technical solution adopted by one embodiment of this utility model to solve its technical problem is as follows: the outer shell is provided with a movable groove, the other end of the third sieve plate is provided with a coupling, the coupling passes through the movable groove, the connecting rod assembly includes two connecting rods that are hinged to each other, one end of the connecting rod assembly is connected to the coupling, and the other end is connected to the second driving member.

[0011] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: the other end of the third screen plate is connected to the connecting rod assembly through a third elastic element, and a vibrator is installed on the third screen plate.

[0012] The beneficial effects of this utility model are as follows: When crushed construction waste falls freely onto the feed end of the screening plate, local material accumulation occurs. By adjusting the rotation of the first screen plate to make the angle of the screen surface of the first screen plate larger, the material accumulated on the screening component can fall quickly, avoiding material accumulation at the feed end of the screening plate. After the construction waste flows down to the second screen plate, by adjusting the inclination angle of the screen surface of the second screen plate to be smaller than that of the first screen plate, the downward flow velocity of the construction waste falling to the second screen plate is reduced, and the material residence time is extended, thereby improving the screening efficiency. Attached Figure Description

[0013] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0014] Fig. 1 This is a schematic diagram of the construction waste crushing device described in the embodiments of this application;

[0015] Fig. 2 This is a cross-sectional view of the construction waste crushing device described in the embodiments of this application. Detailed Implementation

[0016] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0017] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0018] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0020] Reference Figs. 1-2 According to an embodiment of this application, the construction waste crushing device includes a housing 10 and a primary crushing mechanism 20, a screening assembly 40, and a secondary crushing mechanism 30 disposed within the housing 10. The primary crushing mechanism 20 is disposed above one end of the screening assembly 40, and the secondary crushing mechanism 30 is disposed below the other end of the screening assembly 40. The screening assembly 40 includes a plurality of screen plates connected end to end, and each screen plate can be rotated within the housing 10 to adjust its inclination angle with the horizontal plane.

[0021] The outer shell 10 has a construction waste inlet distributed above the primary crushing mechanism 20 and a construction waste outlet distributed at the lower end of the outer shell 10. Construction waste is fed in through the waste inlet and falls onto the primary crushing mechanism 20. Referring to the attached drawings, the primary crushing mechanism 20 includes two crushing rollers. After being crushed by the primary crushing mechanism 20, the construction waste falls onto the screening assembly 40.

[0022] The screening assembly 40 includes at least two screen plates connected end-to-end. When crushed construction waste falls freely onto the feed end of the screen plates, localized material accumulation occurs. By adjusting the rotation of the first screen plate to make its screen surface angle larger, the accumulated material on the screening assembly 40 can fall quickly, preventing material accumulation at the feed end of the screen plates. After the construction waste flows down to the second screen plate, the tilt angle of the second screen plate is adjusted to be smaller than that of the first screen plate, reducing the downward flow velocity of the construction waste falling onto the second screen plate and prolonging the material residence time, thereby improving screening efficiency. Different compositions of construction waste have different angles of repose. In this application, the tilt angle of each screen plate is adjustable, allowing for adjustment of the screen surface tilt angle for different compositions of construction waste, thus adapting to the rapid screening of different types of construction waste.

[0023] Specifically, the screening assembly 40 includes a first screen plate 41 and a second screen plate 42. One end of the first screen plate 41 and the second screen plate 42 are rotatably mounted on the outer casing 10 and close to each other. The other ends of the two screen plates are movably connected to the outer casing. The outer casing 10 is provided with two first driving members 50. The two first driving members 50 are used to drive the other ends of the first screen plate 41 and the second screen plate 42 to rotate around the rotatable connection point with the outer casing 10.

[0024] One end of the first screen plate 41 and the second screen plate 42 are brought close to each other, and the other ends of the first screen plate 41 and the second screen plate 42 are moved away from each other to adjust the tilt angle of the screen surface of the first screen plate 41 and the second screen. This allows the first screen plate 41 and the second screen plate 42 to be connected end to end while the tilt angle of the screen surface can be adjusted, thus preventing construction waste from flowing down from the gap between the first screen plate 41 and the second screen plate 42.

[0025] Based on the above, the first driving member 50 is a telescopic rod, and the outer shell 10 is provided with two arc-shaped grooves 11. The other ends of the first sieve plate 41 and the second sieve plate 42 are respectively installed in the arc-shaped grooves 11 and can move in the arc-shaped grooves 11 respectively. The first driving member 50 is rotatably installed on the outer shell 10, and the telescopic end of the first driving member 50 is rotatably connected to the first sieve plate 41 or the second sieve plate 42. The first sieve plate 41 and the second sieve plate 42 are rotated by the extension and retraction of the telescopic rod to adjust their tilt angle with the horizontal plane respectively.

[0026] One end of the first screen plate 41 and the second screen plate 42 are respectively connected to the outer shell 10 through the first elastic element 60, and the other end of the two are respectively connected to the first driving element 50 through the second elastic element 90. Vibrators are respectively installed on the first screen plate 41 and the second screen plate 42. After the vibrator generates vibration, the first screen plate 41 and the second screen plate 42 vibrate relative to the outer shell 10 and the first driving element 50, thereby realizing the rapid screening of construction waste on the first screen plate 41 and the second screen plate 42.

[0027] Preferably, the screening assembly 40 in this application further includes a third screen plate 43, which is mounted on the housing 10 and located on the side of the second screen plate 42 away from the first screen plate 41. One end of the third screen plate 43 is hinged to the second screen plate 42, and the other end of the third screen plate 43 is movably mounted on the housing 10. The second drive member 80 is connected to the other end of the third screen plate 43 through the connecting rod assembly 70.

[0028] The inclination angle of the horizontal plane of the third sieve plate 43 is smaller than that of the second sieve plate. This prevents bottom particles from not being screened through due to excessive flow rate, ensuring that the remaining material on the sieve is fully screened, which is beneficial to further improving screening efficiency.

[0029] In order to ensure that the third screen plate 43 and the second screen plate 42 are connected end to end and to prevent construction waste from flowing down through the gap between the second screen plate 42 and the third screen plate 43, one end of the third screen plate 43 is hinged to the second screen plate 42. After the second screen plate 42 drives the third screen plate 43 to rotate synchronously, the second driving member 80 drives the third screen plate 43 to rotate to adjust the tilt angle of the screen surface of the third screen plate 43.

[0030] Specifically, the outer casing 10 is provided with a movable groove 12, the other end of the third sieve plate 43 is provided with a coupling, the coupling passes through the movable groove 12, and the connecting rod assembly 70 includes two connecting rods that are hinged to each other. One end of the connecting rod assembly 70 is connected to the coupling, and the other end is connected to the second driving member 80.

[0031] Referring to the accompanying drawings, when the second screen plate 42 rotates, it drives the third screen plate 43 to rotate synchronously. The third screen plate 43 rotates relative to the second driving member 80 through the connecting rod assembly 70, thus preventing the second driving member 80 from restricting the rotation of the third screen plate 43. After the second screen plate 42 has finished rotating, the second driving member 80 then drives the other end of the third screen plate 43 to rotate.

[0032] Preferably, the other end of the third screen plate 43 is connected to the connecting rod assembly 70 via a third elastic element 100. A vibrator is installed on the third screen plate 43. The second screen plate 42 and the third screen plate 43 are connected to each other, so that the construction waste on the third screen plate 43 can be vibrated and screened under the action of the vibrator (not shown in the figure). The vibrator is a prior art in this application. The installation position and working distance of the vibrator are not described in detail in this application.

[0033] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A construction waste crushing device, characterized in that, The device includes a housing (10) and a primary crushing mechanism (20), a screening assembly (40), and a secondary crushing mechanism (30) disposed within the housing (10). The primary crushing mechanism (20) is disposed above one end of the screening assembly (40), and the secondary crushing mechanism (30) is disposed below the other end of the screening assembly (40). The screening assembly (40) includes several screen plates connected end to end, and each screen plate can be rotated within the housing (10) to adjust its inclination angle with the horizontal plane.

2. The construction waste crushing device according to claim 1, characterized in that, The screening assembly (40) includes a first screen plate (41) and a second screen plate (42). One end of the first screen plate (41) and the second screen plate (42) are rotatably mounted on the outer shell (10) and close to each other. The other ends of the two are movably connected to the outer shell. The outer shell (10) is provided with two first driving members (50). The two first driving members (50) are used to drive the other ends of the first screen plate (41) and the second screen plate (42) to rotate around the rotatable connection point with the outer shell (10).

3. The construction waste crushing device according to claim 2, characterized in that, The first driving member (50) is a telescopic rod. The outer shell (10) is provided with two arc-shaped grooves (11). The other ends of the first sieve plate (41) and the second sieve plate (42) are respectively installed in the arc-shaped grooves (11) and can move in the arc-shaped grooves (11). The first driving member (50) is rotatably installed on the outer shell (10), and the telescopic end of the first driving member (50) is rotatably connected to the first sieve plate (41) or the second sieve plate (42).

4. The construction waste crushing device according to claim 2 or 3, characterized in that, One end of the first sieve plate (41) and the second sieve plate (42) are respectively connected to the outer shell (10) through the first elastic element (60), and the other end of the two are respectively connected to the first driving element (50) through the second elastic element (90). Vibrators are respectively installed on the first sieve plate (41) and the second sieve plate (42).

5. The construction waste crushing device according to claim 2, characterized in that, It also includes a third sieve plate (43), which is mounted on the housing (10) and located on the side of the second sieve plate (42) away from the first sieve plate (41). One end of the third sieve plate (43) is hinged to the second sieve plate (42), and the other end of the third sieve plate (43) is movably mounted on the housing (10). The second drive member (80) is connected to the other end of the third sieve plate (43) through a connecting rod assembly (70).

6. The construction waste crushing device according to claim 5, characterized in that, The outer casing (10) is provided with a movable groove (12), and the other end of the third sieve plate (43) is provided with a coupling. The coupling passes through the movable groove (12). The connecting rod assembly (70) includes two connecting rods that are hinged to each other. One end of the connecting rod assembly (70) is connected to the coupling, and the other end is connected to the second driving member (80).

7. The construction waste crushing device according to claim 5, characterized in that, The other end of the third sieve plate (43) is connected to the connecting rod assembly (70) via a third elastic element (100), and a vibrator is installed on the third sieve plate (43).

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