Multi-stage stirring production device for recycled coarse aggregate concrete

Abstract

The utility model relates to the technical field of constructional engineering, in particular to a recycled coarse aggregate concrete multi-stage stirring production device which comprises a bottom plate and supporting plates, the upper end of the bottom plate is symmetrically and fixedly connected with the supporting plates, and the inner walls of the supporting plates on the two sides are rotationally connected with two first rotating shafts through bearings respectively. A mixing device is arranged at one ends of the first rotating shafts on the two sides. According to the multi-stage stirring production device for the recycled coarse aggregate concrete, through cooperation of a discharging structure and a mixing device, a rotating plate drives a cylinder to synchronously rotate through a second rotating shaft, so that concrete in the cylinder is accumulated towards a discharging pipe, and an electromagnetic valve is opened to enable the concrete in the cylinder to flow out for collection and use; primary mixing is carried out in a manner of turning over multiple groups of recycled aggregates, so that the damage probability is effectively reduced, meanwhile, stirring dead angles are reduced, the stirring effect is improved, meanwhile, discharging can be conveniently carried out, and the device is more convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, specifically to a multi-stage mixing production device for recycled coarse aggregate concrete. Background Technology

[0002] Recycled aggregate from construction waste is aggregate with a nominal particle size of less than 40mm obtained from waste concrete blocks generated during building demolition, road renovation, concrete production, engineering construction, and other situations, after crushing and processing.

[0003] For example, a multi-stage concrete mixing device using recycled coarse aggregate, authorized by publication number "CN219213616U," uses a motor that, upon startup, drives a rotating shaft to rotate in both directions, simultaneously in both directions, along with the rotation of the mixing drum. This results in high mixing efficiency and thorough mixing of materials after multiple stages, leading to good mixing effects. However, this device is inconvenient for initially mixing the recycled aggregate before mixing it with concrete. The horizontally arranged mixing blades create certain dead zones, resulting in poor mixing performance. Furthermore, the device is not convenient for rapid discharge, making its operation somewhat inconvenient. Utility Model Content

[0004] The purpose of this invention is to solve the problems of poor mixing effect and inconvenience of use of the device, and to propose a multi-stage mixing production device for recycled coarse aggregate concrete.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] Design a multi-stage mixing production device for recycled coarse aggregate concrete, including a base plate and a support plate. The upper end of the base plate is symmetrically and fixedly connected to the support plate. The inner walls of the support plates on both sides are rotatably connected to two first rotating shafts through bearings. One end of the first rotating shafts on both sides is provided with a mixing device. The inner walls of the support plates on both sides are provided with a discharge structure. One end of the support plate on one side is fixedly connected to a servo motor through a motor frame.

[0007] Preferably, the discharge structure includes a second rotating shaft and a cylinder. One end of each of the two second rotating shafts is fixedly connected to a support plate on each side via bearings. One end of each of the two second rotating shafts is fixedly connected to the cylinder. One end of the second rotating shaft on one side is fixedly connected to a rotating plate. The rotating plate is slidably connected to a slider via a slide rail on its surface. Both ends of the slider are fixedly connected to a frame. The outer wall of the frame is fixedly connected to the telescopic end of a hydraulic cylinder. One end of the hydraulic cylinder is fixedly connected to a right-angle plate. One end of the right-angle plate is fixedly connected to a support plate on one side. The inner wall of the cylinder is in contact with two stirring plates. The outer wall of the cylinder is fixedly connected to a discharge pipe. A solenoid valve is installed on the outer wall of the discharge pipe.

[0008] Preferably, the lower end of the cylinder is rotatably connected to the stirring rod via a sealed bearing, and stirring plates are symmetrically fixed to the outer wall of the stirring rod.

[0009] Preferably, a reducer is fixedly connected to the lower end of the cylinder, and the lower end of the stirring rod is rotatably connected to the output shaft of the second motor through the reducer. The second motor is fixedly connected to the reducer through a motor frame.

[0010] Preferably, the mixing device includes a rotating drum and a feed pipe. The two ends of the rotating drum are fixedly connected to the first rotating shafts on both sides, the outer wall of the rotating drum is fixedly connected to the feed pipe, and the upper end of the feed pipe is fixedly connected to the cover by two bolts.

[0011] Preferably, the inner wall of the rotating drum is fixedly connected to multiple straight plates, and one end of the first rotating shaft on one side is fixedly connected to the output shaft of the servo motor.

[0012] This utility model proposes a multi-stage mixing and production device for recycled coarse aggregate concrete. The advantages are as follows: Through the coordination of the discharge structure and the mixing device, the servo motor drives the feed pipe at the upper end of the rotating drum to rotate downwards and then stops rotating, opening the cover again to allow the mixed recycled aggregate to pour out into the cylinder. After mixing is complete, the second motor stops, and the hydraulic cylinder is controlled to work, extending its telescopic end to push the rotating plate to rotate. The rotating plate drives the cylinder to rotate synchronously via the second rotating shaft, causing the concrete inside the cylinder to accumulate at the discharge pipe. The solenoid valve is then opened to allow the concrete to flow out for collection and use. The initial mixing of multiple sets of recycled aggregate by turning them over effectively reduces the probability of damage, minimizes mixing dead zones, improves mixing efficiency, and facilitates discharge, making the device more convenient to use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This utility model Figure 1 A front sectional view;

[0015] Figure 3 This utility model Figure 1 Side view;

[0016] Figure 4 This is a three-dimensional schematic diagram of the cylinder and discharge pipe of this utility model;

[0017] Figure 5 This utility model Figure 2 Schematic diagram of part A in the middle;

[0018] Figure 6 This utility model Figure 2 Schematic diagram of Part B;

[0019] Figure 7 This is a side view of the cylindrical tube and the discharge pipe in this utility model.

[0020] In the diagram: 1. Base plate, 2. Discharge structure, 201. Right-angle plate, 202. Rotating plate, 203. Hydraulic cylinder, 204. Second rotating shaft, 205. Cylinder, 206. Stirring plate, 207. Discharge pipe, 208. Frame, 209. Slider, 3. Second motor, 4. Support plate, 5. Stirring rod, 6. Servo motor, 7. First rotating shaft, 8. Straight plate, 9. Mixing device, 901. Rotating cylinder, 902. Feed pipe, 903. Cover, 904. Bolt. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings:

[0022] See attached document Figure 1-7 In this embodiment, a multi-stage mixing production device for recycled coarse aggregate concrete includes a base plate 1 and a support plate 4. The upper end of the base plate 1 is symmetrically and fixedly connected to the support plate 4. The inner walls of the two support plates 4 are rotatably connected to two first rotating shafts 7 respectively through bearings. One end of the two first rotating shafts 7 is provided with a mixing device 9. The inner walls of the two support plates 4 are provided with a discharge structure 2. One end of one support plate 4 is fixedly connected to a servo motor 6 through a motor frame. The servo motor 6 can meet the working requirements according to actual needs.

[0023] The lower end of the cylinder 205 is rotatably connected to the stirring rod 5 via a sealed bearing. The outer wall of the stirring rod 5 is symmetrically and fixedly connected to the stirring plate 206. The lower end of the cylinder 205 is fixedly connected to the reducer. The lower end of the stirring rod 5 is rotatably connected to the output shaft of the second motor 3 via the reducer. The second motor 3 is configured to meet the working requirements as needed. The second motor 3 is fixedly connected to the reducer via a motor frame. Multiple straight plates 8 are fixedly connected to the inner wall of the rotating cylinder 901. One end of the first rotating shaft 7 on one side is fixedly connected to the output shaft of the servo motor 6.

[0024] The discharge structure 2 includes a second rotating shaft 204 and a cylinder 205. One end of each of the two second rotating shafts 204 is fixedly connected to the support plates 4 on both sides via bearings. One end of each of the two second rotating shafts 204 is fixedly connected to the cylinder 205. One end of one second rotating shaft 204 is fixedly connected to a rotating plate 202. The rotating plate 202 is slidably connected to a slider 209 via a slide rail on its surface. Both ends of the slider 209 are fixedly connected to a frame 208. The outer wall of the frame 208 is fixedly connected to the telescopic end of a hydraulic cylinder 203. The hydraulic cylinder 203 is designed to meet the actual working requirements. One end of the hydraulic cylinder 203 is fixedly connected to a right-angle plate 201. One end of the right-angle plate 201 is fixedly connected to the support plate 4 on one side. The inner wall of the cylinder 205 is in contact with two stirring plates 206. The outer wall of the cylinder 205 is fixedly connected to a discharge pipe 207. A solenoid valve is installed on the outer wall of the discharge pipe 207.

[0025] The mixing device 9 includes a rotating drum 901 and a feed pipe 902. The two ends of the rotating drum 901 are fixedly connected to the first rotating shafts 7 on both sides, respectively. The outer wall of the rotating drum 901 is fixedly connected to the feed pipe 902. The upper end of the feed pipe 902 is fixedly connected to the cover 903 by two bolts 904.

[0026] Working principle:

[0027] When recycled coarse aggregate is mixed in multiple stages:

[0028] The operator rotates the bolts 904 on both sides to disconnect them from the feed pipe 902, allowing the cover 903 to be removed. Then, various crushed recycled aggregates (such as concrete, mortar, stone, and bricks) are placed into the inside of the rotating drum 901 through the feed pipe 902. Following the reverse operation, the cover 903 is closed again, and the servo motor 6 is activated. The output shaft of the servo motor 6 rotates, causing the first rotating shaft 7 on one side to rotate synchronously. The first rotating shaft 7 drives the rotating drum 901 to rotate. The rotating drum 901, through the internal straight plate 8, tumbles the various recycled aggregates inside, achieving the initial mixing of the recycled aggregates.

[0029] Secondary mixing process:

[0030] The servo motor 6 drives the feed pipe 902 at the upper end of the rotating drum 901 to rotate to the downward position and then stops rotating. The cover 903 is opened again to pour out the mixed recycled aggregate into the cylinder 205. Cement and a certain amount of water are added to the inside of the cylinder 205. The second motor 3 is controlled to work, so that the output shaft of the second motor 3 rotates and drives the mixing rod 5 to rotate synchronously through the reducer. The mixing rod 5 can drive the mixing plates 206 on both sides to mix the water, cement and recycled aggregate inside, thus completing the multi-stage mixing of concrete.

[0031] Discharge process:

[0032] After mixing is complete, stop the second motor 3 and control the hydraulic cylinder 203 to work. The telescopic end of the hydraulic cylinder 203 extends and drives the slider 209 to slide inside the rotating plate 202 through the frame 208. At the same time, the slider 209 can push the rotating plate 202 to rotate around the second rotating shaft 204. The rotating plate 202 drives the cylinder 205 to rotate synchronously through the second rotating shaft 204, causing the cylinder 205 to tilt at 30 degrees. This causes the concrete inside the cylinder 205 to accumulate at the discharge pipe 207. Open the solenoid valve to let the concrete inside flow out for collection and use. When no longer in use (i.e., without allowing time for the concrete to solidify after each use), the remaining concrete inside can be rinsed clean by flushing with water or using a tool (a hook to loosen the clumps). The wastewater generated during rinsing can be collected and treated.

[0033] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A multi-stage mixing production device for recycled coarse aggregate concrete, comprising a bottom plate (1) and a support plate (4), the upper end of the bottom plate (1) is fixedly connected with the support plate (4) in symmetry, characterized in that: The inner walls of the support plates (4) on both sides are rotatably connected to the two first rotating shafts (7) respectively through bearings. One end of the first rotating shafts (7) on both sides is provided with a mixing device (9). The inner walls of the support plates (4) on both sides are provided with a discharge structure (2). One end of the support plate (4) on one side is fixedly connected to the servo motor (6) through a motor frame.

2. The multi-stage mixing production device for recycled coarse aggregate concrete according to claim 1, characterized in that: The discharge structure (2) includes a second rotating shaft (204) and a cylinder (205). One end of each of the two second rotating shafts (204) is fixedly connected to the support plates (4) on both sides via bearings. One end of each of the two second rotating shafts (204) is fixedly connected to the cylinder (205). One end of one second rotating shaft (204) is fixedly connected to a rotating plate (202). The rotating plate (202) is slidably connected to a slider (209) via a slide rail on its surface. Both ends of the slider (209) are... The cylinder (205) is fixedly connected to the frame (208), the outer wall of the frame (208) is fixedly connected to the telescopic end of the hydraulic cylinder (203), one end of the hydraulic cylinder (203) is fixedly connected to the right angle plate (201), one end of the right angle plate (201) is fixedly connected to the support plate (4) on one side, the inner wall of the cylinder (205) is in contact with the two stirring plates (206), the outer wall of the cylinder (205) is fixedly connected to the discharge pipe (207), and a solenoid valve is installed on the outer wall of the discharge pipe (207).

3. The multi-stage mixing apparatus for producing recycled coarse aggregate concrete according to claim 2, characterized in that: The lower end of the cylinder (205) is rotatably connected to the stirring rod (5) through a sealed bearing, and the outer wall of the stirring rod (5) is symmetrically and fixedly connected with stirring plates (206).

4. The multi-stage mixing apparatus for producing recycled coarse aggregate concrete according to claim 3, wherein: The lower end of the cylinder (205) is fixedly connected to a speed reducer, and the lower end of the stirring rod (5) is rotatably connected to the output shaft of the second motor (3) through the speed reducer. The second motor (3) is fixedly connected to the speed reducer through a motor frame.

5. The multi-stage mixing and production device for recycled coarse aggregate concrete according to claim 1, characterized in that: The mixing device (9) includes a rotating drum (901) and a feed pipe (902). The two ends of the rotating drum (901) are fixedly connected to the first rotating shafts (7) on both sides respectively. The outer wall of the rotating drum (901) is fixedly connected to the feed pipe (902). The upper end of the feed pipe (902) is fixedly connected to the cover (903) by two bolts (904).

6. The multi-stage mixing apparatus for producing recycled coarse aggregate concrete according to claim 5, wherein: The inner wall of the rotating drum (901) is fixedly connected to multiple straight plates (8), and one end of the first rotating shaft (7) on one side is fixedly connected to the output shaft of the servo motor (6).

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