Construction waste regeneration machine-made sand preparation device
By using an adjustable-angle screen plate and an auger-type reflux assembly, the problem of incomplete screening in traditional sand making equipment has been solved, enabling efficient recycling of construction waste and improving the quality and production efficiency of manufactured sand.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING TONGLEI HIGH-TECH CONCRETE CO LTD
- Filing Date
- 2025-04-17
- Publication Date
- 2026-05-08
AI Technical Summary
Traditional sand making equipment is difficult to adapt to construction waste with different compositions, resulting in screen blockage or incomplete material screening, which affects the quality of finished sand. In addition, manual or additional equipment is required to handle substandard sand particles, increasing energy consumption and operational complexity.
An adjustable-angle screen plate and an auger-type reflux assembly were designed. Automatic reflux is achieved by adjusting the screen plate angle and the auger rod rotation, ensuring the screening accuracy and efficiency of construction waste. Unqualified sand particles are automatically returned to the crushing assembly for secondary crushing.
It improves screening accuracy, reduces manual intervention, lowers labor intensity, ensures the quality and production efficiency of manufactured sand, and reduces energy consumption.
Smart Images
Figure CN224208084U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of materials processing technology, and in particular to a device for preparing recycled manufactured sand from construction waste. Background Technology
[0002] Currently, the recycling of construction waste has become an important direction for resource recycling. Among them, crushing and screening construction waste to produce recycled manufactured sand can effectively replace natural sand and reduce the environmental burden.
[0003] Traditional sand making equipment has the following problems: fixed-angle screen plates are difficult to adapt to construction waste of different compositions (such as concrete blocks, bricks, mortar, etc.), which can easily lead to screen blockage or incomplete material screening, affecting the quality of finished sand. Substandard sand particles usually need to be manually or with additional conveying equipment to be put back into crushing, increasing energy consumption and operational complexity.
[0004] To address this issue, we propose a device for preparing recycled sand from construction waste. Utility Model Content
[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a device for preparing recycled sand from construction waste.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a device for preparing recycled sand from construction waste, comprising a bottom plate, a screening chamber and a screen plate, wherein the screening chamber is mounted on the bottom plate via support legs, and a crushing component is provided at the top feed inlet of the screening chamber, the crushing component being used to crush and process construction waste;
[0007] The sieve plate is rotatably disposed within the screening chamber, and the screening chamber is provided with an adjustment component for adjusting the tilt angle of the sieve plate.
[0008] The base plate is equipped with a reflux assembly, which is used to guide substandard crushed particles in the screening chamber back to the crushing assembly.
[0009] Preferably, the adjustment assembly consists of a motor, an arc-shaped rack and an arc-shaped slider. The arc-shaped slider is located at one end of the sieve plate and slides on the inner wall of the screening chamber. The arc-shaped rack is located inside the arc-shaped slider.
[0010] Preferably, the motor is located on the outer wall of the screening chamber, and the output end of the motor is provided with a gear, which meshes with the teeth of the arc-shaped rack and pinion.
[0011] Preferably, the arc-shaped rack, the arc-shaped slider, and the sieve plate are coaxial.
[0012] Preferably, the reflux assembly consists of a vertical plate, a reflux pipe, a cylindrical shell, and an auger rod, with the vertical plate disposed on the base plate and the cylindrical shell disposed on the vertical plate.
[0013] Preferably, the auger rod is rotatably disposed inside the cylinder shell, the feed inlet of the cylinder shell is connected to the side return port of the screening chamber, one end of the return pipe is disposed at the discharge port of the cylinder shell and the other end is directly opposite the feed hopper of the crushing assembly.
[0014] Preferably, the crushing assembly consists of a crushing roller, a crushing chamber, and a feeding hopper. The crushing chamber is located at the top feed inlet of the screening chamber, the crushing roller is symmetrically rotated within the crushing chamber, and the feeding hopper is located at the top feed inlet of the crushing chamber.
[0015] Preferably, the lower surface of the base plate is provided with four support seats, and the four support seats are arranged in a rectangular array on the base plate.
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0017] In use, the construction waste recycled sand preparation device of this utility model is connected to an external power source. The construction waste is introduced into the crushing component for crushing. The crushed sand particles fall onto the screen plate of the screening chamber. The sand particles that meet the particle size requirements fall through the screen plate and are finally discharged through the bottom opening of the screening chamber. The sand particles that do not meet the particle size requirements are gathered under the action of the inclined plane and finally enter the return component. Under the operation of the return component, the sand particles are re-entered into the crushing component through the feed hopper for secondary crushing.
[0018] During this process, the tilt angle of the screen plate can be adjusted by adjusting the components according to the screening requirements. Increasing the tilt angle (the screen is steeper) makes the material slide down faster, thereby shortening the residence time, which is suitable for separating fragile materials. Decreasing the tilt angle (the screen is flatter) makes the material slide slower, thereby extending the residence time, which is suitable for processing difficult-to-crush impurities and ensuring thorough crushing.
[0019] When the crushing unit is working, the power unit drives the two crushing rollers to rotate, thereby crushing the material that enters between the two crushing rollers.
[0020] When the adjustment component is working, the motor operates in the gear meshing state, causing the arc-shaped slider to deflect the screen plate, thereby changing the tilt angle of the screen plate.
[0021] When the reflux assembly is working, the power unit drives the auger rod to rotate, and the substandard sand particles retained on the screen plate enter the cylinder. Under the rotation of the auger rod, they are sent back into the crushing assembly through the reflux pipe.
[0022] This invention features an adjustable-angle screen plate design, allowing the tilt angle of the screen plate to be adjusted according to the characteristics of different materials. Increasing the screen plate tilt angle accelerates the material's downward flow and reduces its residence time, making it suitable for separating fragile materials. Decreasing the screen plate tilt angle extends the material's residence time, enhancing the screening effect and making it suitable for handling difficult-to-crush impurities, thereby improving screening accuracy and ensuring the quality of manufactured sand. The auger-type reflux assembly automatically transports substandard sand particles back to the crushing rollers for secondary crushing, forming a closed-loop cycle that requires no manual intervention and reduces labor intensity. Attached Figure Description
[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0024] Figure 2 For the present utility model Figure 1 A schematic diagram of the sectional front view structure;
[0025] Figure 3 This is a schematic diagram of the adjustment component structure of this utility model;
[0026] Figure 4 This is a schematic diagram of the recirculation component structure of this utility model.
[0027] Figure label:
[0028] 1. Base plate; 2. Support base; 3. Support legs; 4. Screening chamber; 5. Crushing assembly; 501. Crushing roller; 502. Crushing chamber; 503. Feed hopper; 6. Return assembly; 601. Vertical plate; 602. Return pipe; 603. Cylinder shell; 604. Screw rod; 7. Adjustment assembly; 701. Motor; 702. Arc-shaped rack; 703. Arc-shaped slider; 8. Screen plate. Detailed Implementation
[0029] 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.
[0030] Example 1
[0031] like Figures 1-4As shown, the present invention proposes a device for preparing recycled sand from construction waste, comprising a base plate 1, a screening chamber 4, and a screen plate 8. The screening chamber 4 is mounted on the base plate 1 via support legs 3. A crushing component 5 is provided at the top feed inlet of the screening chamber 4, which is used to crush the construction waste. The screen plate 8 is rotatably mounted in the screening chamber 4. An adjusting component 7 is provided on the screening chamber 4, which is used to adjust the inclination angle of the screen plate 8. A reflux component 6 is provided on the base plate 1, which is used to guide substandard crushed particles in the screening chamber 4 back to the crushing component 5.
[0032] During use, when connected to an external power source, construction waste is fed into the crushing component 5 for crushing. The crushed sand particles fall onto the screen plate 8 of the screening chamber 4. Sand particles that meet the particle size requirements fall through the screen plate 8 and are finally discharged through the bottom opening of the screening chamber 4. Sand particles that do not meet the particle size requirements are gathered under the action of the inclined plane and finally enter the return component 6. Under the operation of the return component 6, they re-enter the crushing component 5 through the feed hopper 503 for secondary crushing.
[0033] During this process, the inclination angle of the screen plate 8 can be adjusted by adjusting component 7 according to the screening requirements. Increasing the inclination angle (making the screen steeper) makes the material slide down faster, thereby shortening the residence time, which is suitable for separating fragile materials. Decreasing the inclination angle (making the screen flatter) slows down the sliding of the material, thereby extending the residence time, which is suitable for processing difficult-to-crush impurities and ensuring thorough crushing.
[0034] Example 2
[0035] like Figures 1-4 As shown, the present invention proposes a device for preparing recycled sand from construction waste. Compared with Embodiment 1, this embodiment further includes: an adjustment component 7 consisting of a motor 701, an arc-shaped rack 702, and an arc-shaped slider 703. The arc-shaped slider 703 is located at one end of the sieve plate 8 and slides on the inner wall of the screening chamber 4. The arc-shaped rack 702 is located inside the arc-shaped slider 703. The motor 701 is located on the outer wall of the screening chamber 4. The output end of the motor 701 is provided with a gear, which meshes with the gear teeth of the arc-shaped rack 702. The arc-shaped rack 702, the arc-shaped slider 703, and the sieve plate 8 are coaxial. When the adjustment component 7 is working, the motor 701 operates in the gear meshing state, causing the arc-shaped slider 703 to deflect the sieve plate 8, thereby changing the tilt angle of the sieve plate 8.
[0036] The reflux assembly 6 consists of a vertical plate 601, a reflux pipe 602, a cylindrical shell 603, and an auger rod 604. The vertical plate 601 is mounted on the base plate 1, the cylindrical shell 603 is mounted on the vertical plate 601, and the auger rod 604 is rotatably mounted inside the cylindrical shell 603. The feed inlet of the cylindrical shell 603 is connected to the side reflux port of the screening chamber 4. One end of the reflux pipe 602 is located at the discharge port of the cylindrical shell 603, and the other end is directly opposite the feed hopper 503 of the crushing assembly 5. When the reflux assembly 6 is working, the power unit drives the auger rod 604 to rotate, and the substandard sand particles retained on the screen plate 8 enter the cylindrical shell 603. Under the rotation of the auger rod 604, they are fed back into the crushing assembly 5 through the reflux pipe 602.
[0037] The crushing assembly 5 consists of a crushing roller 501, a crushing chamber 502, and a feed hopper 503. The crushing chamber 502 is located at the top feed inlet of the screening chamber 4. The crushing roller 501 is symmetrically rotated inside the crushing chamber 502. The feed hopper 503 is located at the top feed inlet of the crushing chamber 502. When the crushing assembly 5 is working, the power unit drives the two crushing rollers 501 to rotate, thereby crushing the material entering between the two crushing rollers 501.
[0038] The lower surface of the base plate 1 is provided with support seats 2. There are four support seats 2 in total, and the positions of the four support seats 2 are distributed in a rectangular array on the base plate 1.
[0039] It should be noted that the structure of motor 701 is a mature existing technology, and its working principle and internal structure are known to those skilled in the art. This utility model only utilizes its function and does not improve its internal structure. Therefore, it will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.
[0040] The crushing roller 501 and auger rod 604 of this utility model also need to be provided with a power device to enable them to work normally. As is well known to those skilled in the art, the provision of such power is commonplace and is a conventional means or common knowledge. It will not be described in detail here. Those skilled in the art can make any selection according to their needs or convenience.
[0041] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.
[0042] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A device for preparing recycled manufactured sand from construction waste, comprising a bottom plate (1), a screening chamber (4), and a screen plate (8), characterized in that: The screening chamber (4) is mounted on the base plate (1) via a support leg (3). A crushing component (5) is provided at the top feed inlet of the screening chamber (4). The crushing component (5) is used to crush and process construction waste. The sieve plate (8) is rotatably disposed in the sieving chamber (4), and the sieving chamber (4) is provided with an adjustment component (7), which is used to adjust the tilt angle of the sieve plate (8); The base plate (1) is provided with a reflux assembly (6), which is used to guide the substandard crushed particles in the screening chamber (4) back to the crushing assembly (5).
2. The apparatus for preparing recycled manufactured sand from construction waste according to claim 1, characterized in that: The adjustment component (7) consists of a motor (701), an arc rack (702) and an arc slider (703). The arc slider (703) is located at one end of the sieve plate (8) and slides on the inner wall of the screening chamber (4). The arc rack (702) is located inside the arc slider (703).
3. The apparatus for preparing recycled manufactured sand from construction waste according to claim 2, characterized in that: The motor (701) is located on the outer wall of the screening chamber (4), and the output end of the motor (701) is provided with a gear, which meshes with the teeth of the arc-shaped rack (702).
4. The apparatus for preparing recycled manufactured sand from construction waste according to claim 2, characterized in that: The arc-shaped rack (702), the arc-shaped slider (703), and the sieve plate (8) are coaxial.
5. The apparatus for preparing recycled manufactured sand from construction waste according to claim 1, characterized in that: The reflux assembly (6) consists of a vertical plate (601), a reflux pipe (602), a cylindrical shell (603), and an auger rod (604). The vertical plate (601) is mounted on the base plate (1), and the cylindrical shell (603) is mounted on the vertical plate (601).
6. The apparatus for preparing recycled manufactured sand from construction waste according to claim 5, characterized in that: The auger rod (604) is rotatably disposed inside the cylindrical shell (603). The feed inlet of the cylindrical shell (603) is connected to the side return port of the screening chamber (4). One end of the return pipe (602) is disposed at the discharge port of the cylindrical shell (603), and the other end is directly opposite the feed hopper (503) of the crushing assembly (5).
7. The apparatus for preparing recycled manufactured sand from construction waste according to claim 1, characterized in that: The crushing assembly (5) consists of a crushing roller (501), a crushing chamber (502), and a feeding hopper (503). The crushing chamber (502) is located at the top feed inlet of the screening chamber (4). The crushing roller (501) is symmetrically rotated inside the crushing chamber (502). The feeding hopper (503) is located at the top feed inlet of the crushing chamber (502).
8. The apparatus for preparing recycled manufactured sand from construction waste according to claim 1, characterized in that: The lower surface of the base plate (1) is provided with support seats (2), there are four support seats (2) in total, and the positions of the four support seats (2) are distributed in a rectangular array on the base plate (1).