A mixer for the preparation of recycled concrete
By introducing a spiral belt mixer and multiple mixing mechanisms into the recycled concrete mixer, the problem of uneven mixing was solved, enabling the crushing and uniform mixing of concrete blocks, thus improving mixing efficiency and quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHIJIANG JINTAIYUAN CONCRETE CO LTD
- Filing Date
- 2025-06-29
- Publication Date
- 2026-06-05
AI Technical Summary
Existing recycled concrete mixers are prone to uneven mixing during the mixing process, especially when mixing concrete blocks.
A mixer for preparing recycled concrete was designed, employing a spiral belt mixer and a multi-stage mixing mechanism, including lifting and translating components. The mixer blades shred the concrete blocks to ensure uniform mixing.
It achieves uniform mixing of recycled concrete, avoids uneven mixing, and improves mixing efficiency and quality.
Smart Images
Figure CN224323313U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of concrete preparation technology, specifically to a mixer for preparing recycled concrete. Background Technology
[0002] Recycled concrete is usually made by crushing, cleaning, and grading waste concrete blocks and mixing them with graded aggregates in a certain proportion to partially or completely replace natural aggregates such as sand and gravel. Then, cement, water and other raw materials are added and mixed in a mixer to make new concrete.
[0003] The prior art patent number CN202222327938.7 discloses a special mixer for preparing recycled concrete, including legs, a support plate, a recycled concrete mixing tank, a mixing component, and a cleaning component. The support plate is disposed on the legs, the recycled concrete mixing tank is disposed on the support plate, the mixing component is disposed on the recycled concrete mixing tank, and the cleaning component is disposed on the recycled concrete mixing tank. The mixing component includes a mixing shaft, a mixing sleeve, a mixing rod, a stirring scraper, a first gear, a second gear, a first rotating shaft, a second rotating shaft, a third gear, and a fourth gear.
[0004] The aforementioned patent also has some shortcomings. For example, when mixing concrete, the presence of concrete blocks can easily lead to uneven mixing. Therefore, the existing technology needs to be improved. Utility Model Content
[0005] The purpose of this invention is to provide a mixer for preparing recycled concrete, so as to solve the problem mentioned in the background art that uneven mixing is easy to occur during the mixing process due to the presence of concrete blocks in the concrete.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a mixer for preparing recycled concrete, comprising a mixing drum, a lifting frame mounted on the rear side wall of the mixing drum, a U-shaped frame mounted on the drive end of the lifting frame, and a spiral belt agitator mounted on the bottom of the mixing drum; sliders mounted on the left and right ends of the U-shaped frame, and a support rod mounted on the front end of the sliders; a bearing plate mounted on the bottom end of the support rod, and a mixing mechanism mounted on the bearing plate; the mixing mechanism includes a rotating shaft, a fixed cylinder, a fixed sleeve, a mixing blade, and a motor; rotating holes are opened on both sides of the top of the bearing plate, and bearing seats are installed in the rotating holes, with the rotating shaft installed in the bearing seats; the fixed cylinder is fitted outside the rotating shaft, and three fixed sleeves are installed on the outside of the fixed cylinder from top to bottom, with a mixing blade mounted on the outer wall of each fixed sleeve in a triangular shape; the motor is mounted on the upper end of the bearing plate via a support frame, and the rotating shaft is connected to the drive end of the motor.
[0007] As a preferred embodiment of the mixer for preparing recycled concrete according to this utility model, the bearing housing includes a shaft cylinder a and a shaft cylinder b arranged opposite to each other. Rotating cavities are evenly and equidistantly opened on the inner walls of the shaft cylinder a and shaft cylinder b along their axis. Ball bearings are installed inside the rotating cavities and are arranged in contact with the outer wall of the rotating shaft.
[0008] As a preferred embodiment of the mixer for preparing recycled concrete according to this utility model, connecting plates are installed on both outer walls of the shaft cylinder a and shaft cylinder b, and threaded holes are opened on the side walls of the connecting plates, and bolts are threaded into the threaded holes.
[0009] As a preferred embodiment of the mixer for preparing recycled concrete according to this utility model, the rear sidewalls of the shaft cylinders a and b are equipped with fixing plates, and the outer walls of the shaft cylinders a and b are provided with oil injection holes.
[0010] As a preferred embodiment of the mixer for preparing recycled concrete according to this utility model, a water tank is fitted on the outside of the mixing drum, and a water pipe is fitted between the water tank and the mixing drum.
[0011] As a preferred embodiment of the mixer for preparing recycled concrete according to this utility model, a sliding rod is installed at the upper inner end of the U-shaped frame, and a through hole is opened at the upper side wall of the slider, through which the slider is installed on the outside of the sliding rod.
[0012] As a preferred embodiment of the mixer for preparing recycled concrete according to this utility model, a dual-shaft electric push rod is installed at the center of the lower end of the U-shaped frame, and the drive end of the dual-shaft electric push rod is connected to a slider.
[0013] As a preferred embodiment of the mixer for preparing recycled concrete according to this utility model, the top of the lifting frame is equipped with an electric push rod, and the drive end of the electric push rod is connected to the U-shaped frame.
[0014] Compared with the prior art, the beneficial effects of this utility model are: the mixer for preparing recycled concrete has a reasonable structural design;
[0015] By installing a spiral belt mixer inside the mixing drum, recycled concrete can be mixed. By installing two sets of mixing mechanisms inside the mixing drum, and by using lifting and translating components, multiple mixing processes are carried out inside the mixing drum. The mixing blades in the mixing mechanism can chop the concrete blocks, thus avoiding uneven mixing. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the stirring mechanism of this utility model;
[0018] Figure 3 This is a schematic diagram of the bearing housing of this utility model;
[0019] Figure 4 This is a schematic diagram of part A of the present invention.
[0020] In the diagram: 1. Mixing drum; 2. Water tank; 3. Water pipe; 4. Bearing seat; 41. Shaft a; 42. Shaft b; 43. Fixing plate; 5. Mixing mechanism; 51. Motor; 52. Rotating shaft; 53. Fixing cylinder; 54. Fixing sleeve; 55. Mixing blade; 6. Bearing plate; 7. Dual-shaft electric push rod; 8. Support rod; 9. Slide rod; 10. Through hole; 11. Sliding block; 12. U-shaped frame; 13. Electric push rod; 14. Lifting frame; 15. Connecting plate; 16. Bolt; 17. Screw hole; 18. Oil injection hole; 19. Ball bearing; 20. Rotating cavity. Detailed Implementation
[0021] 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.
[0022] Please see Figure 1-4 This utility model provides a technical solution:
[0023] In this technical solution, a mixer for preparing recycled concrete includes a mixing drum 1. A lifting frame 14 is mounted on the rear side wall of the mixing drum 1. A U-shaped frame 12 is mounted on the drive end of the lifting frame 14. Spiral belt agitators are mounted on the bottom of the interior of the mixing drum 1. Slider blocks 11 are mounted on both the left and right ends of the interior of the U-shaped frame 12. A support rod 8 is mounted on the front end of the slider 11. A bearing plate 6 is installed at the bottom end of the support rod 8. A mixing mechanism 5 is mounted on the bearing plate 6. The mixing mechanism 5 includes a rotating shaft 52, a fixed cylinder 53, a fixed sleeve 54, a mixing blade 55, and a motor 51. Rotating holes are opened on both sides of the top of the bearing plate 6. Bearing seats 4 are installed in the rotating holes. The rotating shaft 52 is installed in the bearing seats 4. The fixed cylinder 53 is fitted outside the rotating shaft 52. Three fixed sleeves 54 are installed from top to bottom on the outside of the fixed cylinder 53. The outer wall of each fixed sleeve 54 is triangular and a mixing blade 55 is installed. The motor 51 is mounted on the upper end of the bearing plate 6 through the support frame. The rotating shaft 52 is connected to the drive end of the motor 51.
[0024] In this technical solution, the recycled concrete can be mixed inside the mixing drum 1 by a spiral belt mixer, while the U-shaped frame 12 can be raised and lowered within the lifting 14. The two sliders 11 inside the U-shaped frame 12 can move laterally within the U-shaped frame 12, thereby driving the bearing plate 6 to rise and fall and move left and right, which in turn drives the mixing mechanism 5 to rise and fall and move left and right within the mixing drum 1. The mixing mechanism 5 can perform multiple mixing on the mixing drum 1, and the mixing blade 55 in the mixing mechanism 5 can chop the concrete blocks.
[0025] In some technical solutions, the bearing housing 4 includes a shaft cylinder a41 and a shaft cylinder b42 arranged opposite to each other. Rotating cavities 20 are evenly and equidistantly opened on the inner walls of the shaft cylinder a41 and the shaft cylinder b42 along their axis. Ball bearings 19 are installed inside the rotating cavities 20 and are arranged to fit against the outer wall of the rotating shaft 52.
[0026] In this technical solution, after the shaft cylinders a41 and b42 in the bearing housing 4 are combined, the cylinder body is inserted into the fixing hole, and the internal ball bearings 19 are in contact with the rotating shaft 52 and roll in the rotating cavity 20, thereby avoiding the accumulation of impurities that may enter and affect the rotation of the rotating shaft.
[0027] In some technical solutions, connecting plates 15 are installed on both outer walls of shaft cylinders a41 and b42. The side walls of the connecting plates 15 are provided with screw holes 17, and bolts 16 are screwed into the screw holes 14.
[0028] In this technical solution, connecting plates 15 are installed at both ends of the combined shaft cylinders a41 and b42, and the fitting connecting plates 15 are connected and fixed by bolts 16.
[0029] In some technical solutions, a fixing plate 43 is installed on the rear side wall of shaft cylinder a41 and shaft cylinder b42, and an oil injection hole 18 is opened on the outer wall of shaft cylinder a41 and shaft cylinder b42.
[0030] In this technical solution, after the fixed shaft cylinders a41 and b42 are inserted into the fixing hole, the fixing plate 43 is attached to the upper end of the bearing plate 6 and fixed by external screws. The oil injection hole 18 is connected to the rotating cavity, and lubricating oil can be added into it.
[0031] In some technical solutions, a water tank 2 is installed on the outside of the mixing drum 1, and a water pipe 3 is installed between the water tank 2 and the mixing drum 1.
[0032] In this technical solution, a water pump is installed inside the water tank 2, and a water pipe 3 is connected to the drive end of the water pump 3, thereby adding water into the inside of the mixing drum 1.
[0033] In some technical solutions, a slide rod 9 is installed at the upper end of the inside of the U-shaped frame 12, and a through hole 10 is opened at the upper end of the side wall of the slider 11. The slider 11 is installed on the outside of the slide rod 9 through the through hole 10.
[0034] In this technical solution, the slider 11 can move outside the slide rod 9 through the through hole 10.
[0035] In some technical solutions, a dual-axis electric push rod 7 is installed at the center of the lower end inside the U-shaped frame 12, and the drive end of the dual-axis electric push rod 7 is connected to the slider 11.
[0036] In this technical solution, the left and right ends of the dual-column electric push rod 7 are provided with driving ends, thereby driving the slider 11 to move left and right.
[0037] In some technical solutions, the top of the lifting frame 14 is equipped with an electric push rod 13, and the drive end of the electric push rod 13 is connected to the U-shaped frame 12.
[0038] In this technical solution, the U-shaped frame 12 in the lifting frame 14 can be raised and lowered by the electric push rod 13.
[0039] Working principle: When using it, first, the concrete to be mixed needs to be added into the mixing drum 1, and water is added into it through the water tank 2 to prevent dust from being stirred up. The concrete is mixed by the internal spiral belt agitator. At the same time, the mixing mechanism 5 is inserted into the mixing drum 1 and started to perform multiple mixing. The concrete blocks are cut by the mixing blade 55.
[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0041] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
Claims
1. A mixer for preparing recycled concrete, comprising a mixing drum (1), characterized in that, The rear side wall of the stirring drum (1) is equipped with a lifting frame (14), the driving end of the lifting frame (14) is equipped with a U-shaped frame (12), and the bottom of the inside of the stirring drum (1) is equipped with a spiral ribbon stirrer. The U-shaped frame (12) is equipped with sliders (11) at both the left and right ends, and the front end of the sliders (11) is equipped with a support rod (8). The bottom end of the support rod (8) is equipped with a bearing plate (6), and a stirring mechanism (5) is mounted on the bearing plate (6). The stirring mechanism (5) includes a rotating shaft (52), a fixed cylinder (53), a fixed sleeve (54), a stirring blade (55), and a motor (51). Rotating holes are provided on both sides of the top of the bearing plate (6), and bearing seats (4) are installed in the rotating holes. The rotating shaft (52) is installed in the bearing seats (4). The fixed cylinder (53) is fitted onto the outside of the rotating shaft (52). Three fixed sleeves (54) are installed on the outside of the fixed cylinder (53) from top to bottom. Each fixed sleeve (54) has a triangular outer wall and a stirring blade (55) is installed thereon. The motor (51) is mounted on the upper end of the support plate (6) via a support frame, and the rotating shaft (52) is connected to the drive end of the motor (51).
2. The mixer for preparing recycled concrete according to claim 1, characterized in that, The bearing housing (4) includes a shaft cylinder a (41) and a shaft cylinder b (42) arranged opposite to each other. Rotary cavities (20) are evenly spaced along the axis of the inner walls of the shaft cylinder a (41) and the shaft cylinder b (42). Ball bearings (19) are installed inside the rotary cavities (20) and are arranged in contact with the outer wall of the rotating shaft (52).
3. The mixer for preparing recycled concrete according to claim 2, characterized in that, Both sides of the outer walls of the shaft cylinder a (41) and shaft cylinder b (42) are equipped with connecting plates (15), and the side walls of the connecting plates (15) are provided with screw holes (17), and bolts (16) are screwed into the screw holes (17).
4. A mixer for preparing recycled concrete according to claim 3, characterized in that, The rear sidewalls of the shaft cylinders a (41) and b (42) are fitted with fixing plates (43), and the outer walls of the shaft cylinders a (41) and b (42) are provided with oil injection holes (18).
5. A mixer for preparing recycled concrete according to claim 1, characterized in that, A water tank (2) is fitted on the outside of the stirring drum (1), and a water pipe (3) is fitted between the water tank (2) and the stirring drum (1).
6. The mixer for preparing recycled concrete according to claim 1, characterized in that, The upper part of the U-shaped frame (12) is equipped with a slide rod (9), and the upper part of the side wall of the slider (11) is provided with a through hole (10). The slider (11) is installed on the outside of the slide rod (9) through the through hole (10).
7. A mixer for preparing recycled concrete according to claim 6, characterized in that, A dual-axis electric push rod (7) is installed at the center of the lower end of the U-shaped frame (12), and the drive end of the dual-axis electric push rod (7) is connected to the slider (11).
8. A mixer for preparing recycled concrete according to claim 1, characterized in that, The top of the lifting frame (14) is equipped with an electric push rod (13), and the drive end of the electric push rod (13) is connected to the U-shaped frame (12).