Raw material preparation machine for recycled concrete preparation
By using an inclined screen disc and triangular screen holes, combined with an adjustment mechanism and a vibrating motor, the problem of low screening efficiency and frequent clogging of recycled concrete aggregates is solved, achieving efficient and flexible screening and rapid clogging removal.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-03-13
AI Technical Summary
Existing screening devices for recycled concrete aggregates suffer from the problem of frequent screen replacements and multiple screenings to achieve a single size requirement. Furthermore, uneven aggregates can easily cause screen blockage, increasing the frequency of cleaning and downtime.
The screen uses an inclined screen with triangular mesh, and is equipped with an adjustment mechanism and a filter. The mesh area can be adjusted by an electrically controlled telescopic rod, and combined with a vibrating motor, it can achieve rapid screening and clogging removal. Multi-stage screening can separate particles of different sizes.
It enables rapid and flexible screening of recycled concrete aggregates, reduces the difficulty and time required to clean screen blockages, and improves screening efficiency and equipment operational stability.
Smart Images
Figure CN223988745U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of screening device technology, specifically relating to a raw material preparation machine for recycled concrete preparation. Background Technology
[0002] Recycled concrete refers to the use of waste concrete as a replacement, partially or completely added to concrete for re-preparation. Currently, with the deepening of environmental awareness and the concept of resource reuse, recycled concrete has become one of the main methods of concrete preparation. Recycled concrete mainly involves the reprocessing of aggregate particles from waste concrete, including coarse and fine aggregates. Since the aggregates of recycled concrete are not as uniform as those of natural stone aggregates after crushing and manufacturing, general screening equipment, especially when screening coarse aggregates, is prone to frequent screen replacements and multiple screenings to achieve the requirement of single-size aggregates. On the other hand, such non-uniform aggregates are more likely to cause screen blockage, leading to an increase in the frequency of cleaning and downtime. Utility Model Content
[0003] The purpose of this invention is to provide a raw material preparation machine for recycled concrete, which solves the technical problems mentioned in the background art.
[0004] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:
[0005] A raw material preparation machine for recycled concrete includes a base, a vibrating motor, a sieve plate, and a control panel. The sieve plate is located on the upper end of the base and connected to it by a spring. The vibrating motor is located on the lower end of the sieve plate, and an adjustment mechanism is provided on the lower end of the sieve plate.
[0006] The sieve disc is inclined from top to bottom, and a number of sieve holes are evenly distributed in the inclined area of the sieve disc. The sieve holes are triangular in structure. The adjustment mechanism includes a connecting frame, a shielding rod, and an electrically controlled telescopic rod. The connecting frame is parallel to the inclined area of the sieve disc and is slidably disposed on the lower side of the sieve disc. The shielding rod is evenly disposed in the connecting frame and abuts against the lower end of the sieve disc. Each shielding rod corresponds to a horizontal row of sieve holes. The electrically controlled telescopic rod is disposed on the side of the sieve disc and its output shaft is connected to the connecting frame.
[0007] The adjustment mechanism may be multiple, with a single adjustment mechanism corresponding to a segmented area of the sieve disc, and multiple adjustment mechanisms arranged in a row and corresponding to the sieve hole area of the matching sieve disc.
[0008] The upper side of the screen plate is also provided with several filter media, which are alternately arranged on the left and right sides of the screen plate. Each filter media includes a suspension and a baffle. The suspension is connected to the screen plate and is at a distance from the upper end of the screen plate. There are several baffles evenly arranged at the lower end of the suspension.
[0009] The suspension is set at an angle relative to the tilting direction of the screen plate.
[0010] This application has at least the following advantages compared to the prior art:
[0011] By adjusting the mechanism and the triangular structure of the screen holes, the screened recycled concrete aggregate can be easily and quickly adjusted steplessly, improving the flexibility of the screening process. At the same time, the adjustable characteristics between the screen holes and the shielding rod can also meet the requirement of quick cleaning of the screen holes after screening, reducing the difficulty of cleaning blockages and reducing the time spent. Attached Figure Description
[0012] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings.
[0013] Figure 1 This is a schematic diagram of the structure of this utility model.
[0014] Figure 2 This is a schematic diagram of the structure of this utility model from another angle.
[0015] Figure 3 This is a schematic diagram of the bottom structure of the sieve disc of this utility model.
[0016] Base 1, Vibration motor 11, Screen plate 12, Spring 13, Screen hole 14, Connecting frame 2, Shielding rod 21, Electrically controlled telescopic rod 22, Suspension 3, Stop bar 31. Detailed Implementation
[0017] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.
[0018] like Figure 1-3 As shown, a raw material preparation machine for recycled concrete includes a base 1, a vibrating motor 11, a sieve plate 12 and a control panel. The sieve plate 12 is located on the upper end of the base 1 and is connected to it by a spring 13. The vibrating motor 11 is located on the lower end of the sieve plate 12, and an adjustment mechanism is provided on the lower end of the sieve plate 12.
[0019] The sieve disc 12 is inclined from top to bottom. The inclined area of the sieve disc 12 is evenly provided with a number of sieve holes 14. The sieve holes 14 are triangular in structure. The adjustment mechanism includes a connecting frame 2, a shielding rod 21 and an electrically controlled telescopic rod 22. The connecting frame 2 is parallel to the inclined area of the sieve disc 12 and is slidably disposed on the lower side of the sieve disc 12. The shielding rod 21 is evenly disposed in the connecting frame 2 and abuts against the lower end of the sieve disc 12. Each shielding rod 21 corresponds to a horizontal row of sieve holes 14. The electrically controlled telescopic rod 22 is disposed on the side of the sieve disc 12 and its output shaft is connected to the connecting frame 2.
[0020] During aggregate screening, the position of the connecting frame 2 is adjusted by activating the electrically controlled telescopic rod 22 via the control panel. This allows the exposed area of the screen holes 14 to be adjusted using the shielding rod 21. Since the screen holes 14 are equilateral triangles, their size will proportionally decrease or increase under the translational shielding of the shielding rod 21. Consequently, the area corresponding to the screen holes 14 and the area of the inscribed circle of the equilateral triangle will also change proportionally, thus controlling the particle size screened by the screen holes 14. Then, the vibration motor 11 is activated. Through the spring 13 between the base 1 and the screen plate 12, the kinetic energy generated by the vibration motor 11 drives the screen plate 12 to vibrate, thereby… To meet the needs of material conveying and screening, the raw materials to be screened are finally poured onto the screen plate 12. The material rolls down from top to bottom through the inclined state of the screen plate 12. Under the screening action of the screen holes 14, the aggregates that meet the particle size can be screened out, while the larger particles roll down. The control panel used in this application is common in the current control technology field, such as single-chip microcomputer control. At the same time, this application does not involve complex control. It can also be a common opening and closing circuit to control the on and off of electrical equipment or the extension and retraction control of the electric telescopic rod 22, which can be understood by those skilled in the art. Therefore, the specific control structure or method will not be described in detail here.
[0021] After screening or during intervals, some particles may be similar in size to the diameter of the sieve hole 14, and the sieve hole 14 may be blocked by aggregate. In this case, the sieve hole 14 can be fully opened to expand the diameter of the sieve hole 14, thereby quickly removing such stuck aggregate and clearing the blockage.
[0022] There can be multiple adjustment mechanisms. A single adjustment mechanism corresponds to a segmented area of the sieve plate 12, while multiple adjustment mechanisms are arranged in a row and correspond to the sieve hole 14 area of the sieve plate 12.
[0023] This method can be used to meet the needs of multi-stage screening, allowing aggregates of different particle sizes to be screened out in a single screening operation.
[0024] Several filter media are also provided on the upper side of the screen plate 12. The filter media are alternately arranged on the left and right sides of the screen plate 12. The filter media includes a suspension 3 and a baffle 31. The suspension 3 is connected to the screen plate 12 and has a distance from the upper end of the screen plate 12. There are several baffles 31 and they are evenly arranged at the lower end of the suspension 3.
[0025] The suspension block 3 is tilted relative to the tilting feeding direction of the screen plate 12.
[0026] During screening, the suspension and baffle can further block and guide the aggregate, preventing it from sliding down too quickly due to kinetic energy when poured onto the screen plate, which would result in insufficient screening. The suspended baffle can not completely block the aggregate, ensuring that the screen holes on the lower side of the baffle can screen normally, and at the same time, it can also prevent the aggregate from accumulating and causing insufficient screening.
[0027] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.
Claims
1. A raw material preparation machine for recycled concrete preparation, comprising a base, a vibrating motor, a sieve disc, and a control panel, wherein the sieve disc is disposed on the upper end of the base and connected to it by a spring, and the vibrating motor is disposed on the lower end of the sieve disc, characterized in that: The lower end of the screen disc is provided with an adjusting mechanism; The screen disc is arranged in a downward inclination from top to bottom, the inclination area of the screen disc is uniformly provided with a plurality of screen holes, the screen holes are in a triangular structure, the adjusting mechanism comprises a connecting frame, a shielding rod and an electric control telescopic rod, the connecting frame is parallel to the inclination area of the screen disc and is arranged in sliding on the lower side of the screen disc, the shielding rods are uniformly arranged in the connecting frame and abut against the lower end of the screen disc, a single shielding rod corresponds to a row of screen holes in the transverse direction, and the electric control telescopic rod is arranged on the side of the screen disc and the output shaft is connected with the connecting frame.
2. A raw material preparation machine for producing recycled concrete according to claim 1, characterized in that: The adjusting mechanism can also be multiple, a single adjusting mechanism corresponds to a segmented area of the screen disc, and multiple adjusting mechanisms are distributed in a row and correspond to the screen hole area of the screen disc.
3. A raw material preparation machine for the production of recycled concrete according to claim 2, characterized in that: The upper side of the screen disc is also provided with a plurality of material filters, a plurality of the material filters are alternately arranged on the left and right sides of the screen disc, the material filter comprises a suspension barrier and a blocking rod, the suspension barrier is connected with the screen disc and has a distance from the upper end of the screen disc, and the number of the blocking rods is a plurality and is uniformly arranged at the lower end of the suspension barrier.
4. A raw material preparation machine for producing recycled concrete according to claim 3, characterized in that: The suspension barrier is arranged in an inclination compared with the downward inclination direction of the screen disc.