Concrete premixing device

Abstract

The utility model discloses a concrete premixing device which comprises a belt conveyor, two baffles are fixedly connected to the top of the belt conveyor, four inclined plates are fixedly connected between the two baffles, the same supporting plate is fixedly connected between the two inclined plates, and a double-shaft motor is fixedly connected to the top of the supporting plate. The double-shaft motor is adopted to drive the U-shaped stirring rod to mix in the premixing cavity, cement, aggregate and additives are ensured to be uniformly distributed, the V-shaped pipe and the air pipe are matched with the dust removal fan to form negative pressure suction, dust generated in the mixing process is effectively collected, and the dust is filtered through the filter bag, so that the working environment is remarkably improved, and the working efficiency is improved. The dust removal effect is ensured, aggregate is prevented from entering the pipeline, and stable operation is ensured; the L-shaped discharging plate structure driven by the oil cylinder is matched with the guiding effect of the arc-shaped guide plate, so that the bottom of the premixing cavity is opened stably, material clamping stagnation and accumulation are avoided, smooth discharging is ensured, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of ready-mixed concrete technology, and in particular to a concrete premixing device. Background Technology

[0002] Ready-mixed concrete is divided into two types: wet-mixed and dry-mixed. It should be clearly stated that dry-mixed concrete is a material in which cement, aggregates (such as sand and gravel), and other additives are pre-mixed in a certain proportion. This mixture is usually transported to the construction site in bulk or bagged form, and then water is added and stirred before use. Wet-mixed concrete, on the other hand, is made by adding water and other possible additives to a dry-mixed concrete mixture.

[0003] In existing technologies, during the dry mixing process, cement and fine aggregates easily generate a large amount of dust, resulting in a harsh working environment and potentially endangering workers' health. Some premixing equipment is prone to aggregate jamming or mixture accumulation during unloading due to unreasonable structural design (such as straight-through discharge ports), requiring manual intervention to clean up and affecting production efficiency. Therefore, we propose a concrete premixing device to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a concrete premixing device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A premixed concrete device includes a belt conveyor. Two baffles are fixedly connected to the top of the belt conveyor, and four inclined plates are fixedly connected between the two baffles. A common support plate is fixedly connected between two of the inclined plates. A dual-shaft motor is fixedly connected to the top of the support plate. A transmission rod is fixedly connected to one end of each of the two output shafts of the dual-shaft motor. Two U-shaped mixing rods are fixedly connected to the outer walls of each of the two transmission rods. Hydraulic cylinders are fixedly connected to the outer walls of the outer walls of the two inclined plates. L-shaped feeding plates are fixedly connected to the outer walls of the output ends of the two hydraulic cylinders. Arc-shaped guide plates are fixedly connected to the outer walls of the other two inclined plates, and the arc-shaped guide plates contact the L-shaped feeding plates. Dust collection components are provided on the outer walls of the inclined plates.

[0007] Preferably, the dust removal assembly includes a duct, wherein the outer walls of the two inclined plates are provided with mounting holes, the inner walls of the two mounting holes are fixedly connected to the same V-shaped pipe, the bottom of the V-shaped pipe is fixedly connected to one end of the duct, one of the baffles is provided with a docking hole on its outer wall, the inner wall of the docking hole is fixedly connected to the outer wall of the duct, and the other end of the duct is fixedly connected to a dust removal fan, thereby removing dust during dry mixing by setting up the dust removal assembly.

[0008] Preferably, the bottom of the belt conveyor is fixedly connected to multiple legs, and multiple crossbars are fixedly connected between the multiple legs. The conveyor belt is rotatably connected inside the belt conveyor. The overall support strength is increased by setting multiple legs and multiple crossbars.

[0009] Preferably, the outer walls of both inclined plates are provided with circular holes, and the inner walls of the two circular holes are rotatably connected to the outer walls of the two output shafts of the dual-axis motor. By setting the dual-axis motor to drive the transmission rod connected thereto to rotate, the rotation of the U-shaped stirring rod is achieved for dry mixing.

[0010] Preferably, the outer walls of the other two inclined plates are provided with through holes, and the inner walls of the two through holes are rotatably connected to the outer walls of the two transmission rods respectively.

[0011] Preferably, one end of each of the two transmission rods is fixedly fitted with a bearing, and the outer rings of the two bearings are respectively fixedly connected to the outer walls of the two inclined plates, so that the rotating rods can be stably rotated by setting the bearings to assist in rotation.

[0012] Preferably, the outer walls of both inclined plates are provided with rectangular holes, and the inner walls of the two rectangular holes are slidably connected to the outer walls of the two L-shaped cutting plates, thereby assisting the linear movement of the L-shaped cutting plates by setting the rectangular holes.

[0013] Compared with the prior art, the advantages of this utility model are:

[0014] This solution employs a dual-shaft motor-driven U-shaped mixing rod to mix materials within the premixing chamber, ensuring uniform distribution of cement, aggregates, and additives. A V-shaped pipe, in conjunction with an air duct and a dust-collecting fan, creates negative pressure suction, effectively collecting dust generated during mixing. This dust is then filtered through filter bags, significantly improving the working environment. This ensures effective dust removal while preventing aggregates from entering the pipes, guaranteeing stable operation. A hydraulically driven L-shaped discharge plate structure, combined with an arc-shaped guide plate, ensures smooth opening of the premixing chamber bottom, preventing material jamming and accumulation, ensuring smooth unloading, and improving production efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of a concrete premixing device proposed in this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of a concrete premixing device proposed in this utility model;

[0018] Figure 3 This utility model proposes a concrete premixing device. Figure 2 A magnified structural diagram of part A in the diagram.

[0019] In the diagram: 1. Belt conveyor; 2. Leg frame; 3. Cross frame; 4. Conveyor belt; 5. Baffle; 6. Inclined plate; 7. Support plate; 8. Dual-shaft motor; 9. Transmission rod; 10. U-shaped stirring rod; 11. Hydraulic cylinder; 12. L-shaped feeding plate; 13. Arc-shaped guide plate; 14. V-shaped pipe; 15. Air duct. Detailed Implementation

[0020] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] Depend on Figures 1-3 As shown, a concrete premixing device is disclosed, including a belt conveyor 1. Multiple legs 2 are bolted to the bottom of the belt conveyor 1, and multiple crossbars 3 are welded to the legs 2 to form a stable support frame. A conveyor belt 4 is rotatably connected inside the belt conveyor 1. The conveyor belt 4 is made of wear-resistant rubber and has anti-slip texture on the surface. Two baffles 5 are fixedly connected to the top of the belt conveyor 1, and four inclined plates 6 are fixedly connected between the two baffles 5. The inclined plates 6 are made of wear-resistant steel plate, and the four inclined plates 6 form two trapezoidal premixing chambers in pairs.

[0022] The two inclined plates 6 are fixedly connected to the same support plate 7. The top of the support plate 7 is fixedly connected to a dual-axis motor 8. The outer walls of the two inclined plates 6 are provided with round holes with sealing rings to ensure transmission sealing. The inner walls of the two round holes are rotatably connected to the outer walls of the two output shafts of the dual-axis motor 8.

[0023] The two output shafts of the dual-shaft motor 8 are fixedly connected to one end of each transmission rod 9. Two U-shaped stirring rods 10 are welded and fixedly connected to the outer walls of the two transmission rods 9. The outer walls of the two inclined plates 6 are provided with through holes. The inner walls of the two through holes are rotatably connected to the outer walls of the two transmission rods 9 respectively. One end of each transmission rod 9 is fixedly fitted with a bearing. The outer rings of the two bearings are fixedly connected to the outer walls of the two inclined plates 6 respectively. The bearings are made of steel.

[0024] Two inclined plates 6 are fixedly connected to hydraulic cylinders 11 on their outer walls. L-shaped unloading plates 12 are fixedly connected to the outer walls of the output ends of the two hydraulic cylinders 11. The working surface of the L-shaped unloading plates 12 is lined with wear-resistant plates. Rectangular holes are opened on the outer walls of the two inclined plates 6. The inner walls of the two rectangular holes are slidably connected to the outer walls of the two L-shaped unloading plates 12. Arc-shaped guide plates 13 are fixedly connected to the outer walls of the other two inclined plates 6. The arc-shaped guide plates 13 play an arc-shaped guiding role for the unloading of concrete above the contact surface, reducing material jamming. The arc-shaped guide plates 13 are in contact with the L-shaped unloading plates 12. The contact surface between the arc-shaped guide plates 13 and the L-shaped unloading plates 12 is provided with a polytetrafluoroethylene wear-resistant layer.

[0025] The outer wall of the inclined plate 6 is equipped with a dust removal component, which includes a duct 15. The outer walls of both inclined plates 6 are provided with mounting holes. The inner walls of the two mounting holes are fixedly connected to the same V-shaped tube 14. The two dust suction ports of the V-shaped tube 14 are equipped with replaceable stainless steel wire mesh, which can effectively capture dust and prevent aggregate from entering. The bottom of the V-shaped tube 14 is fixedly connected to one end of the duct 15. The outer wall of one of the baffles 5 is provided with a docking hole. The inner wall of the docking hole is fixedly connected to the outer wall of the duct 15. The other end of the duct 15 is fixedly connected to a dust removal fan.

[0026] Working principle: In dry-mixing concrete, cement, aggregates (such as sand and gravel), and other additives are added in a certain proportion to two premixing chambers composed of four inclined plates 6. As the dual-shaft motor 8 operates, it drives two transmission rods 9 to rotate, which in turn drives four U-shaped mixing rods 10 to rotate, thus achieving a mixing effect. Simultaneously, the dust removal fan operates, creating negative pressure within the duct 15, and the ends of the V-shaped pipe 14 suck away the dust from the mixture. The inclined ends of the V-shaped pipe 14 prevent aggregates from entering the V-shaped pipe. Inside the tube 14, and with the addition of existing wire mesh at both ends for blocking, dust is filtered through the filter bag installed at the air inlet of the dust removal fan. After premixing, when unloading and use are required, the cylinder 11 operates to drive the L-shaped discharge plate 12 to move to the right. After the L-shaped discharge plate 12 moves to the right, the bottom of the premixing chamber is opened, and the premixed concrete is discharged downward from the bottom of the premixing chamber and enters the conveyor belt 4 inside the belt conveyor 1. As the external motor of the belt conveyor 1 operates, it drives the conveyor belt 4 to move to the right, discharging the premixed concrete.

[0027] It should be noted that, in actual use, an existing PLC controller can be added. The PLC controller is electrically connected to the belt conveyor 1, the dual-axis motor 8, the hydraulic cylinder 11, and the dust removal fan to facilitate overall control. The specific data analysis and processing involved to further realize the control function are methods that can be implemented by technical personnel based on common knowledge. These methods are not within the scope of this solution. The above description is only to illustrate the beneficial effects that can be achieved by this hardware structure improvement in conjunction with common knowledge.

[0028] All standard parts used in this utility model can be purchased from the market. Irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. Furthermore, the structure and principle of the components known to those skilled in the art can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0029] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A concrete premixing device, comprising a belt conveyor (1), characterized in that, The belt conveyor (1) has two baffles (5) fixedly connected to its top, and four inclined plates (6) fixedly connected between the two baffles (5). The same support plate (7) is fixedly connected between the two inclined plates (6). A dual-shaft motor (8) is fixedly connected to the top of the support plate (7). A transmission rod (9) is fixedly connected to one end of each of the two output shafts of the dual-shaft motor (8). Two U-shaped stirring rods (10) are fixedly connected to the outer walls of the two transmission rods (9). A hydraulic cylinder (11) is fixedly connected to the outer walls of the two inclined plates (6). An L-shaped feeding plate (12) is fixedly connected to the outer walls of the output ends of the two hydraulic cylinders (11). An arc-shaped guide plate (13) is fixedly connected to the outer walls of the other two inclined plates (6). The arc-shaped guide plate (13) is in contact with the L-shaped feeding plate (12). A dust removal component is provided on the outer walls of the inclined plates (6).

2. The concrete premixing device according to claim 1, characterized in that, The dust removal assembly includes a duct (15), wherein the outer walls of the two inclined plates (6) are provided with mounting holes, and the inner walls of the two mounting holes are fixedly connected to the same V-shaped pipe (14). The bottom of the V-shaped pipe (14) is fixedly connected to one end of the duct (15). One of the baffles (5) has a docking hole on its outer wall, and the inner wall of the docking hole is fixedly connected to the outer wall of the duct (15). The other end of the duct (15) is fixedly connected to a dust removal fan.

3. A concrete premixing device according to claim 1, characterized in that, The bottom of the belt conveyor (1) is fixedly connected to multiple legs (2), and multiple crossbars (3) are fixedly connected between the multiple legs (2). The belt conveyor (1) is rotatably connected to the inside of the belt conveyor (1).

4. A concrete premixing device according to claim 1, characterized in that, The outer walls of the two inclined plates (6) are provided with round holes, and the inner walls of the two round holes are rotatably connected to the outer walls of the two output shafts of the dual-axis motor (8).

5. A concrete premixing device according to claim 1, characterized in that, The outer walls of the other two inclined plates (6) are provided with through holes, and the inner walls of the two through holes are rotatably connected to the outer walls of the two transmission rods (9).

6. A concrete premixing device according to claim 1, characterized in that, Bearings are fixedly fitted at one end of each of the two transmission rods (9), and the outer rings of the two bearings are fixedly connected to the outer walls of the two inclined plates (6).

7. A concrete premixing device according to claim 1, characterized in that, The outer walls of the two inclined plates (6) are provided with rectangular holes, and the inner walls of the two rectangular holes are slidably connected to the outer walls of the two L-shaped feed plates (12).

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