Concrete mixing device with quantitative feeding function

Abstract

The utility model relates to concrete mixing equipment technical field discloses a concrete mixing device with quantitative feeding function, including mixing drum and feed bin, the top of mixing drum is provided with premixing box, is connected through feed pipe between premixing box and feed bin, and the feed end of feed pipe is sealedly connected with the discharge port of feed bin bottom. This concrete mixing device with quantitative feeding function, through setting premixing box and inside guide plate and feeding inclined plate, has realized the preliminary mixing of material before stirring, the material that enters from feed pipe is gathered and guided by guide plate, then the material falls into the cross distribution feeding inclined plate, and the adjacent inclined plate opposite inclination direction makes the material change motion track constantly in the falling process, realizes the preliminary mixing through mutual collision, interpenetration, reduced the stirring time in subsequent mixing drum, improved the uniformity of concrete, solved the problem that traditional device material directly enters the mixing drum and leads to the problem of mixing insufficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of concrete mixing equipment, specifically a concrete mixing device with quantitative feeding function. Background Technology

[0002] In construction engineering, concrete is an important building material, and its quality directly affects the safety and durability of the project. The quality of concrete largely depends on the accuracy of the proportions of various raw materials.

[0003] The existing patent document CN220700027U discloses a concrete mixer with quantitative feeding capability. This concrete mixer can add materials quantitatively and uniformly, and can mix and stir the materials in different directions, thereby improving the efficiency of material mixing and thus improving the processing quality of concrete.

[0004] However, existing concrete mixing devices with quantitative feeding functions are not convenient for preliminary mixing of materials before mixing. During the feeding process, the materials directly enter the mixing drum and cannot be guided by the guide plate or the cross-distributed feeding ramps to change the trajectory of the materials during the fall, or cause them to collide and intersect with each other. This results in insufficient mixing of materials and requires more time to be spent mixing in the mixing drum, making it difficult to improve the uniformity of concrete and meet the requirements of efficient mixing. Utility Model Content

[0005] Technical problems to be solved The purpose of this invention is to provide a concrete mixing device with a quantitative feeding function, so as to solve the problem mentioned in the background art that existing concrete mixing devices with quantitative feeding functions are not convenient for preliminary mixing of materials before mixing.

[0006] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a concrete mixing device with quantitative feeding function, comprising a mixing drum and a feeding hopper. A premixing box is provided on the top of the mixing drum. The premixing box and the feeding hopper are connected by a feeding pipe. The feeding end of the feeding pipe is sealed to the discharge port at the bottom of the feeding hopper. The discharge end extends to the opening on the side of the premixing box. Inclined guide plates are symmetrically fixed on both sides inside the premixing box. Multiple feeding inclined plates are vertically fixed in a crisscrossing manner inside the premixing box, with adjacent feeding inclined plates having opposite inclination directions and gaps left at their lower ends for material to pass through.

[0007] As a further improvement to the above solution, a feeding motor is installed on one side of the feeding pipe, and the transmission end of the feeding motor passes horizontally through the side wall of the feeding pipe and is fixedly connected to a feeding shaft.

[0008] As a further improvement to the above solution, the outer surface of the feed shaft is integrally formed with a continuous feed spiral, and a stirring motor is installed in the middle of the upper surface of the mixing tank.

[0009] As a further improvement to the above solution, the transmission end at the bottom of the stirring motor vertically penetrates the top wall of the stirring tank and is fixedly connected to a vertically arranged stirring shaft.

[0010] As a further improvement to the above solution, the outer surface of the stirring shaft is welded with uniformly distributed stirring blades, and scrapers are symmetrically fixed on both sides of the stirring shaft.

[0011] As a further improvement to the above solution, the outer wall of the scraper is adapted to the curvature of the inner wall of the mixing tank, and a discharge pipe is provided in the middle of the bottom of the mixing tank, with a discharge valve built into the discharge pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This concrete mixing device with quantitative feeding function achieves preliminary mixing of materials before mixing by setting up a premixing box and internal guide plates and feeding sloping plates. The guide plates gather and guide the materials entering from the feed pipe, and then the materials fall into the cross-distributed feeding sloping plates. The adjacent sloping plates have opposite inclination directions, so that the materials continuously change their trajectory during the falling process. Preliminary mixing is achieved through mutual collision and interweaving, which reduces the mixing time in the subsequent mixing tank, improves the uniformity of concrete, and solves the problem of insufficient mixing caused by materials directly entering the mixing tank in traditional devices. 2. This concrete mixing device with quantitative feeding function achieves precise quantitative feeding through a feeding shaft driven by a feeding motor and a feeding screw structure. The feeding motor drives the feeding shaft to rotate, and the feeding screw rotates accordingly. The screw push force is used to stably transport the material in the feeding hopper to the premixing box. By controlling the speed of the feeding motor, the material conveying amount can be precisely adjusted, avoiding the error of manual feeding, ensuring that each material is fed according to the preset ratio, ensuring the accuracy of the concrete mix ratio, improving the stability of concrete quality, and overcoming the defect of traditional devices that are difficult to accurately control the feeding amount. 3. This concrete mixing device with quantitative feeding function improves the mixing effect and the cleanliness of the mixing drum through the cooperation of mixing blades and scrapers on the mixing shaft. The mixing motor drives the mixing shaft to rotate, and the mixing blades fully mix the materials. At the same time, the scrapers on both sides are in close contact with the inner wall of the mixing drum, which can scrape off the materials adhering to the drum wall, avoiding material residue and waste, and ensuring the uniformity of mixing. Compared with traditional mixing devices, it reduces the phenomenon of material sticking to the wall, improves the mixing efficiency and the service life of the device. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the premixing box of this utility model; Figure 3 This is a three-dimensional structural diagram of the feed pipe of this utility model; Figure 4 This is a three-dimensional structural diagram of the mixing tank of this utility model.

[0014] In the diagram: 1. Mixing tank; 2. Feed hopper; 3. Premixing box; 4. Feed pipe; 5. Guide plate; 6. Feeding slant plate; 7. Feeding motor; 8. Feeding shaft; 9. Feeding screw; 10. Mixing motor; 11. Mixing shaft; 12. Mixing blades; 13. Scraper; 14. Discharge pipe. Detailed Implementation

[0015] 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.

[0016] Please see Figure 1 - Figure 4 This utility model provides a technical solution: a concrete mixing device with quantitative feeding function, including a mixing tank 1 and a feeding hopper 2. A premixing box 3 is provided on the top of the mixing tank 1. The premixing box 3 and the feeding hopper 2 are connected by a feeding pipe 4. The feeding end of the feeding pipe 4 is sealed to the discharge port at the bottom of the feeding hopper 2. The discharge end extends to the opening on the side of the premixing box 3. Inclined guide plates 5 are symmetrically fixed on both sides inside the premixing box 3. Inside the premixing box 3, directly below the guide plates 5, multiple feeding inclined plates 6 are fixed vertically in opposite directions. The inclination directions of adjacent feeding inclined plates 6 are opposite, and gaps are left at the lower ends for material to pass through.

[0017] The conveyed material finally enters the opening on the side of the premixing box 3 from the discharge end of the feed pipe 4. After entering the premixing box 3, the material first comes into contact with the symmetrically fixed inclined guide plates 5 on both sides. The guide plates 5 guide the dispersed material to the central area by tilting, avoiding the material from directly impacting the box wall and causing accumulation. Then the material falls naturally to the feeding inclined plate 6 directly below the guide plate 5. Since multiple feeding inclined plates 6 are fixed in a vertical direction and the adjacent inclined plates are tilted in opposite directions, the material first falls on the upper feeding inclined plate 6 and slides downward with the help of the inclined plate. After reaching the edge, it falls into the lower feeding inclined plate 6 with the opposite tilt. During the continuous falling process, the trajectory of movement is constantly changed. Through the collision, interpenetration and gravity diffusion between different material particles, the initial mixing is achieved. The gap reserved at the lower end of each feeding inclined plate 6 ensures that the material can be transferred downward layer by layer and finally converge at the bottom of the premixing box 3 to complete the premixing process.

[0018] A feeding motor 7 is installed on one side of the feeding pipe 4. The transmission end of the feeding motor 7 passes horizontally through the side wall of the feeding pipe 4 and is fixedly connected to the feeding shaft 8. The outer surface of the feeding shaft 8 is integrally formed with a continuous feeding spiral 9. A stirring motor 10 is installed in the middle of the upper surface of the mixing tank 1. The transmission end of the bottom of the stirring motor 10 passes vertically through the top wall of the mixing tank 1 and is fixedly connected to a vertically set stirring shaft 11. The outer surface of the stirring shaft 11 is welded with evenly distributed stirring blades 12. Scrapers 13 are symmetrically fixed on both sides of the stirring shaft 11. The outer wall of the scraper 13 is adapted to the curvature of the inner wall of the mixing tank 1. A discharge pipe 14 is set in the middle of the bottom of the mixing tank 1. The discharge pipe 14 has a built-in discharge valve.

[0019] During concrete mixing, different raw materials such as cement and aggregate are first loaded into their respective feed hoppers 2. The discharge port at the bottom of the feed hopper 2 is sealed to the feed end of the feed pipe 4 to ensure no leakage during material conveying. The feed motor 7 on one side of the feed pipe 4 is started, and the motor drive drives the feed shaft 8 to rotate at a constant speed. The feed auger 9, which is integrally formed on the outer surface, rotates synchronously with the shaft, generating a continuous pushing force to stably convey the material in the feed hopper 2 along the inclined feed pipe 4. The material conveying amount can be precisely adjusted by controlling the speed of the feed motor 7 to achieve quantitative feeding. The premixed material enters the interior of the mixing tank 1 through the connection structure between the premixing box 3 and the mixing tank 1. At this time, the mixing mechanism in the middle of the upper surface of the mixing tank 1 is started. The motor 10, with its drive end vertically penetrating the barrel, drives the mixing shaft 11 to rotate at high speed. The mixing blades 12 welded to the outer surface rotate with the shaft, forming multi-directional shearing and tumbling of the material to ensure uniform mixing. At the same time, the scrapers 13 symmetrically fixed on both sides of the mixing shaft 11 are precisely matched with the curvature of the inner wall of the mixing barrel 1. During rotation, they closely adhere to the barrel wall, scraping off the material adhering to the wall surface to avoid waste of raw materials and local solidification, ensuring a consistent overall mixing effect of the material in the barrel. When the mixing reaches the preset time, the mixing motor 10 stops running, and the discharge valve built into the discharge pipe 14 at the bottom center of the mixing barrel 1 is opened. The uniformly mixed concrete is stably discharged along the discharge pipe 14 under the action of gravity and can be directly used for construction pouring.

[0020] Working Principle: During concrete mixing, different raw materials such as cement and aggregate are first loaded into their respective feed hoppers 2. The discharge port at the bottom of the feed hopper 2 is sealed to the feed end of the feed pipe 4 to ensure no leakage during material conveying. The feed motor 7 on one side of the feed pipe 4 is started, and the motor drive drives the feed shaft 8 to rotate at a constant speed. The feed auger 9, which is integrally formed on its outer surface, rotates synchronously with the shaft, generating a continuous pushing force to stably convey the material in the feed hopper 2 along the inclined feed pipe 4. By controlling the speed of the feed motor 7, the material conveying amount can be precisely adjusted to achieve quantitative feeding. The material finally enters the premixing box 3 through the outlet end of the feed pipe 4. After entering the premixing box 3, the material first contacts the symmetrically fixed downward inclined guide plates 5 on both sides. The guide plates 5 guide the dispersed material to the central area through the inclination angle, avoiding the material from directly impacting the box wall and causing accumulation. Then the material naturally falls to the feeding ramp 6 directly below the guide plates 5. Since multiple feeding ramps 6 are fixed vertically and adjacent ramps are inclined in opposite directions, the material first falls on the upper feeding ramp 6, slides downward with the help of the ramp's inclination force, and falls into the lower ramp in the opposite direction after reaching the edge. The inclined feeding ramp 6 continuously changes its trajectory during its descent, achieving initial mixing through collisions, interpenetration, and gravitational diffusion between different material particles. The gaps at the lower ends of each feeding ramp 6 ensure that the material is transferred downwards layer by layer, eventually converging at the bottom of the premixing tank 3 to complete the premixing process. The premixed material enters the mixing tank 1 through the connection between the premixing tank 3 and the mixing tank 1. At this point, the stirring motor 10 located in the middle of the upper surface of the mixing tank 1 is activated. The motor's drive end vertically penetrates the tank body, driving the stirring shaft 11 to rotate at high speed. The stirring blades 12 are welded to the outer surface. As the shaft rotates, it shears and tumbles the material in multiple directions, ensuring uniform mixing. At the same time, the scrapers 13, which are symmetrically fixed on both sides of the mixing shaft 11, are precisely matched with the curvature of the inner wall of the mixing tank 1. During rotation, they closely adhere to the tank wall, scraping off the material adhering to the wall surface, avoiding waste of raw materials and local solidification, and ensuring that the overall mixing effect of the material in the tank is consistent. When the mixing reaches the preset time, the mixing motor 10 stops running, and the discharge valve built into the discharge pipe 14 at the bottom center of the mixing tank 1 is opened. The uniformly mixed concrete is stably discharged along the discharge pipe 14 under the action of gravity and can be directly used for construction pouring.

[0021] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. A concrete mixing device with quantitative feeding function, comprising a mixing drum (1) and a feeding hopper (2), characterized in that: The top of the mixing tank (1) is provided with a premixing box (3). The premixing box (3) and the feeding bin (2) are connected by a feeding pipe (4). The feeding end of the feeding pipe (4) is sealed to the discharge port at the bottom of the feeding bin (2). The discharge end extends to the opening on the side of the premixing box (3). Inclined guide plates (5) are symmetrically fixed on both sides inside the premixing box (3). Inside the premixing box (3), directly below the guide plates (5), multiple feeding inclined plates (6) are fixed in a vertical direction. The inclination directions of adjacent feeding inclined plates (6) are opposite, and gaps are left at the bottom for material to pass through.

2. A concrete mixing device with quantitative feeding function according to claim 1, characterized in that: A feeding motor (7) is installed on one side of the feeding pipe (4), and the transmission end of the feeding motor (7) passes horizontally through the side wall of the feeding pipe (4) and is fixedly connected to the feeding shaft (8).

3. A concrete mixing device with quantitative feeding function according to claim 2, characterized in that: The outer surface of the feed shaft (8) is integrally formed with a continuous feed spiral (9), and a stirring motor (10) is installed in the middle of the upper surface of the mixing tank (1).

4. A concrete mixing device with quantitative feeding function according to claim 3, characterized in that: The transmission end of the stirring motor (10) is vertically connected to the top wall of the stirring tank (1) and is fixedly connected to a vertically arranged stirring shaft (11).

5. A concrete mixing device with quantitative feeding function according to claim 4, characterized in that: The outer surface of the stirring shaft (11) is welded with uniformly distributed stirring blades (12), and scrapers (13) are symmetrically fixed on both sides of the stirring shaft (11).

6. A concrete mixing device with quantitative feeding function according to claim 5, characterized in that: The outer wall of the scraper (13) is adapted to the curvature of the inner wall of the mixing tank (1). A discharge pipe (14) is provided in the middle of the bottom of the mixing tank (1), and a discharge valve is built into the discharge pipe (14).

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