Mixing device for preparing high-strength concrete from natural sand

Abstract

The utility model relates to the technical field of concrete mixing, and discloses a mixing device for preparing high-strength concrete from natural sand, which comprises a concrete mixing tank, a water inlet pipe is arranged at the front position of the top end of the concrete mixing tank, and a discharge valve port is arranged at the front position of the bottom end of the concrete mixing tank. A premixing assembly is arranged at the top end of the concrete mixing tank, the premixing assembly is provided with a premixing box, the premixing box is fixedly installed at the top end of the concrete mixing tank, and a feeding box is fixedly installed at the top end of the premixing box; by means of the premixing assembly, natural sand grains can be conveniently smashed, the situation that the mixing quality is affected due to mutual adhesion of the natural sand grains is avoided, the dust flying probability can be reduced by spraying water to the feeding port, feeding dust falling is facilitated, the multiple raw materials enter the concrete mixing tank after being mixed subsequently, the probability of layering caused by sequential adding is reduced, and the mixing quality is improved. And the processing continuity can be improved.

Description

Technical Field

[0001] This utility model relates to the technical field of concrete mixing, specifically a mixing device for preparing high-strength concrete using natural sand. Background Technology

[0002] Natural sand refers to rock particles with a diameter of about 5mm formed by natural conditions. Concrete is a building material made by mixing cement as a binder, sand, stone and other particles as aggregates with water in a certain proportion.

[0003] Chinese patent provides a high-strength concrete mixing device, publication number CN215241747U, which includes a box body. The box body includes a mixing chamber formed by the overlapping of two cylindrical mixing spaces. The horizontal cross-section of the mixing chamber is peanut-shaped. Each mixing space is provided with a mixing body. The mixing body includes a base, a main shaft, a bushing, a mixing shaft, an arc-shaped groove, and a scraper.

[0004] The above-mentioned device uses a mixing chamber formed by the overlapping mixing spaces of two cylinders, which can use a small rotational force to mix concrete mortar evenly and quickly. The scraper blade is a hollow triangular pyramid formed by the intersection of two inclined planes, which plays a good scraping role inside the mixing chamber during the mixing process.

[0005] However, when using natural sand to make concrete, the sand particles may stick together. At the same time, the size of the sand raw materials is different. Direct mixing will affect the quality of subsequent concrete processing and the mixing effect will be poor. In addition, during mixing, multiple raw materials are usually metered and added in sequence and then mixed, which results in poor continuous production. Furthermore, adding materials in sequence can easily cause stratification. Utility Model Content

[0006] The purpose of this invention is to provide a mixing device for preparing high-strength concrete using natural sand, which can effectively solve the problems in the prior art where sand particles may stick together, the sand particles are of different sizes, and direct mixing affects the quality of subsequent concrete processing, resulting in poor continuous production, and the problem that sequential feeding easily causes stratification.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A mixing device for preparing high-strength concrete using natural sand includes a concrete mixing tank, a water inlet pipe is provided at the front of the top of the concrete mixing tank, a discharge valve is provided at the front of the bottom of the concrete mixing tank, and a premixing component is provided at the top of the concrete mixing tank.

[0009] The premixing component includes a premixing box, which is fixedly installed at the top of the concrete mixing tank. A feeding box is fixedly installed at the top of the premixing box. A feeding baffle is fixedly installed in the center of the inside of the feeding box. A crushing roller is rotatably installed inside the feeding box and on one side of the feeding baffle via a rotating shaft. A crushing motor is installed at the rear end of the feeding box, and the drive shaft of the crushing motor passes through the feeding box and is fixedly connected to the rotating shaft of the crushing roller. A dustproof spray pipe is provided at the upper part of the inside of the feeding box, and a water supply pipe is connected to the front end of the dustproof spray pipe.

[0010] Preferably, a mixing roller is rotatably mounted inside the mixing motor via a rotating rod, and the mixing motor is mounted on the side of the premixing box away from the crushing roller. The drive shaft of the mixing motor passes through the premixing box and is fixedly connected to the rotating rod of the mixing roller.

[0011] Preferably, there is a gap between the mixing roller and the inner wall of the feeding box, and a gap between the crushing roller and the feeding box, the feeding partition and the guide block.

[0012] Preferably, a discharge port is provided at the connection between the premix box and the concrete mixing tank, and discharge baffles are slidably installed on both sides of the premix box at the lower position. Two electric discharge telescopic rods are installed at the lower front end of the premix box, and the push rod ends of the two electric discharge telescopic rods are respectively connected to the discharge baffles.

[0013] Preferably, a bearing is provided at the connection between the drive shaft of the crushing motor and the feed box, and the drive shaft of the crushing motor is rotatably connected to the feed box through the bearing.

[0014] Preferably, a bearing 2 is provided at the connection between the drive shaft of the mixing motor and the premixing box, and the drive shaft of the mixing motor is rotatably connected to the premixing box through the bearing 2.

[0015] Preferably, a mixing roller is rotatably mounted inside the concrete mixing tank via a rotating shaft, and a mixing motor is installed at the center of the bottom of the concrete mixing tank. The drive shaft of the mixing motor passes through the bottom of the concrete mixing tank and is connected to the mixing roller. The drive shaft of the mixing motor is rotatably connected to the concrete mixing tank via a bearing.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This invention, by setting up a premixing component in conjunction with a concrete mixing tank, facilitates the crushing of natural sand particles during concrete mixing through the cooperation of the crushing roller, crushing motor, and feeding box, preventing the natural sand particles from sticking together and affecting the mixing quality. Furthermore, the feeding box is separated by a feeding baffle, which facilitates classified feeding. In addition, the dustproof spray pipe and water supply pipe, in conjunction with the feeding box, reduce the probability of dust flying by spraying water at the feeding port, which is beneficial for dust control during feeding.

[0018] By using a premixing tank, mixing rollers, and mixing motor in coordination, natural sand, aggregates, and cement can be premixed to improve the uniformity of feeding. This allows multiple raw materials to be mixed and then added to the concrete mixing tank later, reducing the probability of stratification caused by sequential addition and improving the mixing effect. Premixing during the concrete mixing process in the mixing tank also improves the continuity of the processing. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a mixing device for preparing high-strength concrete using natural sand, as described in an embodiment of this utility model.

[0020] Figure 2 This is a top view of the structure of the crushing roller in this embodiment of the present invention;

[0021] Figure 3 This is a cross-sectional view of the internal structure of the premix box and the feed box in an embodiment of this utility model.

[0022] In the diagram: 1. Concrete mixing tank; 2. Water inlet pipe; 3. Premixing component; 4. Premixing box; 5. Mixing roller; 6. Mixing motor; 7. Feed box; 8. Crushing motor; 9. Crushing roller; 10. Guide block; 11. Feed baffle; 12. Dustproof spray pipe; 13. Water supply pipe; 14. Discharge baffle; 15. Electric telescopic discharge rod; 16. Discharge valve port. Detailed Implementation

[0023] 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.

[0024] Example 1

[0025] Combination Figures 1-3 A mixing device for preparing high-strength concrete using natural sand includes a concrete mixing tank 1, a water inlet pipe 2 located at the front of the top of the concrete mixing tank 1, a discharge valve port 16 located at the front of the bottom of the concrete mixing tank 1, and a premixing component 3 located at the top of the concrete mixing tank 1.

[0026] See Figure 2 and Figure 3Furthermore, the premixing component 3 has a premixing box 4, which is fixedly installed at the top of the concrete mixing tank 1. A feeding box 7 is fixedly installed at the top of the premixing box 4. A feeding baffle 11 is fixedly installed in the center of the inside of the feeding box 7. A crushing roller 9 is rotatably installed inside the feeding box 7 and on one side of the feeding baffle 11 via a rotating shaft. A crushing motor 8 is installed at the rear end of the feeding box 7, and the drive shaft of the crushing motor 8 passes through the feeding box 7 and is fixedly connected to the rotating shaft of the crushing roller 9. A dustproof spray pipe 12 is provided at the upper part of the inside of the feeding box 7. A water supply pipe 13 is connected to the front end of the dustproof spray pipe 12. A gap is left directly between the mixing roller 5 and the inner wall of the feeding box 7. A gap is left between the crushing roller 9 and the feeding box 7, the feeding baffle 11 and the guide block 10. A bearing is provided at the connection between the drive shaft of the crushing motor 8 and the feeding box 7, and the drive shaft of the crushing motor 8 is rotatably connected to the feeding box 7 via the bearing.

[0027] Specifically, by starting the crushing motor 8, the crushing roller 9 can be driven to rotate continuously. Then, natural sand raw material can be added into the feed box 7 from above the crushing roller 9. At the same time, the guide block 10 guides the raw material. The crushing roller 9 can crush and grind the natural sand raw material. After grinding, the natural sand raw material will fall below the crushing roller 9. Then, as needed, aggregates such as cement, gravel or ceramsite can be added into the feed box 7 from a position away from the crushing roller 9 for classified feeding. If there are raw materials that need to be crushed among the above aggregates, they can be put in from the crushing roller 9 for crushing.

[0028] Example 2

[0029] See Figure 3 Furthermore, based on Embodiment 1, the mixing motor 6 has a mixing roller 5 rotatably mounted inside via a rotating rod. The mixing motor 6 is mounted on the side of the premixing box 4 away from the crushing roller 9. The drive shaft of the mixing motor 6 passes through the premixing box 4 and is fixedly connected to the rotating rod of the mixing roller 5. A discharge port is provided at the connection between the premixing box 4 and the concrete mixing tank 1. Discharge baffles 14 are slidably installed on both sides of the premixing box 4 at lower positions. Two electric discharge telescopic rods 15 are installed at the lower front end of the premixing box 4. The push rod ends of the retractable rod 15 are connected to the discharge baffle 14 respectively. A bearing 2 is provided at the connection between the drive shaft of the mixing motor 6 and the premix box 4. The drive shaft of the mixing motor 6 is rotatably connected to the premix box 4 through the bearing 2. A mixing roller is rotatably installed inside the concrete mixing tank 1 through a rotating shaft. A mixing motor is installed at the center of the bottom of the concrete mixing tank 1. The drive shaft of the mixing motor passes through the bottom of the concrete mixing tank 1 and is connected to the mixing roller. The drive shaft of the mixing motor is rotatably connected to the concrete mixing tank 1 through the bearing 3.

[0030] Specifically, after cement, gravel, or ceramsite and crushed natural sand are mixed together in the mixing motor 6, the driving shaft of the mixing motor 6 is rotated by starting the mixing motor 6, which in turn rotates the mixing roller 5 to premix the various raw materials. After mixing, the electric discharge telescopic rod 15 can be activated. By extending the push rod of the electric discharge telescopic rod 15, the discharge baffle 14 can be moved away from the premix box 4, thereby adding the initially mixed raw materials into the concrete mixing tank 1, so as to achieve the effect of simultaneous feeding and reduce the probability of material stratification caused by sequentially pouring raw materials.

[0031] In actual operation, by starting the crushing motor 8, the crushing roller 9 can be driven to rotate continuously. Then, the natural sand raw material can be added into the feed box 7 from above the crushing roller 9. At the same time, the guide block 10 guides the raw material. The natural sand raw material can be crushed and ground by the continuous rotation of the crushing roller 9. After grinding, the natural sand raw material will fall below the crushing roller 9.

[0032] Then, as needed, aggregates such as cement, gravel, or ceramsite can be added to the feed box 7 from a position away from the crushing roller 9 for classified feeding. If there are raw materials that need to be crushed among the above aggregates, they can be put in from the crushing roller 9 for crushing.

[0033] Furthermore, during the raw material addition process, the water supply pipe 13 can be connected to the external water supply pipe as needed to deliver water to the dust suppression spray pipe 12 for spraying. Continuous water spraying through the dust suppression spray pipe 12 can suppress dust and prevent dust from flying during the material addition process. At the same time, continuous water spraying can help wash down any raw materials that may stick together, thereby improving the material feeding effect.

[0034] After cement, gravel, or ceramsite and crushed natural sand are mixed together in the mixing motor 6, the driving shaft of the mixing motor 6 is rotated by starting the mixing motor 6, which drives the mixing roller 5 to rotate, so as to premix the various raw materials. After mixing, the feeding electric telescopic rod 15 can be started. The push rod of the feeding electric telescopic rod 15 extends and drives the feeding baffle 14 away from the premix box 4, so as to add the raw materials after the initial mixing into the concrete mixing tank 1, so as to achieve the function of simultaneous feeding.

[0035] This reduces the probability of material stratification caused by sequentially pouring in raw materials. At the same time, when the raw materials enter the concrete mixing tank 1 for mixing, they can be pre-mixed in advance according to the above steps, and can be directly discharged later to improve the continuity of mixing.

[0036] After the raw materials are added, an appropriate amount of water can be added to the concrete mixing tank 1 through the water inlet pipe 2 according to the existing technology, and the mixing motor can be started to drive the mixing rollers in the concrete mixing tank 1 to rotate, so as to mix the various raw materials in the concrete mixing tank 1. After the mixing is completed, the discharge valve port 16 can be opened to release the processed concrete out of the interior of the concrete mixing tank 1.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mixing device for preparing high-strength concrete using natural sand, comprising a concrete mixing tank (1), wherein a water inlet pipe (2) is provided at the front position of the top of the concrete mixing tank (1), and a discharge valve port (16) is provided at the front position of the bottom of the concrete mixing tank (1), characterized in that: The premixing component (3) is provided at the top of the concrete mixing tank (1); The premixing component (3) has a premixing box (4), which is fixedly installed at the top of the concrete mixing tank (1). A feeding box (7) is fixedly installed at the top of the premixing box (4). A feeding baffle (11) is fixedly installed in the center of the inside of the feeding box (7). A crushing roller (9) is installed inside the feeding box (7) and on one side of the feeding baffle (11) via a rotating shaft. A crushing motor (8) is installed at the rear end of the feeding box (7), and the drive shaft of the crushing motor (8) passes through the feeding box (7) and is fixedly connected to the rotating shaft of the crushing roller (9). A dustproof spray pipe (12) is provided at the upper part of the inside of the feeding box (7), and a water supply pipe (13) is connected to the front end of the dustproof spray pipe (12).

2. The mixing device for preparing high-strength concrete using natural sand according to claim 1, characterized in that: The mixing motor (6) has a mixing roller (5) mounted inside it via a rotating rod. The mixing motor (6) is mounted on the side of the premix box (4) away from the crushing roller (9). The drive shaft of the mixing motor (6) passes through the premix box (4) and is fixedly connected to the rotating rod of the mixing roller (5).

3. A mixing device for preparing high-strength concrete using natural sand according to claim 2, characterized in that: There is a gap between the mixing roller (5) and the inner wall of the feed box (7), and there is a gap between the crushing roller (9) and the feed box (7), the feed partition (11) and the guide block (10).

4. A mixing device for preparing high-strength concrete using natural sand according to claim 1, characterized in that: A discharge port is provided at the connection between the premix box (4) and the concrete mixing tank (1). Discharge baffles (14) are slidably installed on both sides of the premix box (4) at the lower position. Two discharge electric telescopic rods (15) are installed at the lower front end of the premix box (4). The push rod ends of the two discharge electric telescopic rods (15) are respectively connected to the discharge baffles (14).

5. A mixing device for preparing high-strength concrete using natural sand according to claim 1, characterized in that: A bearing is provided at the connection between the drive shaft of the crushing motor (8) and the feed box (7), and the drive shaft of the crushing motor (8) is rotatably connected to the feed box (7) through the bearing.

6. A mixing device for preparing high-strength concrete using natural sand according to claim 2, characterized in that: The drive shaft of the mixing motor (6) is provided with a bearing 2 at the connection between it and the premixing box (4), and the drive shaft of the mixing motor (6) is rotatably connected to the premixing box (4) through the bearing 2.

7. A mixing device for preparing high-strength concrete using natural sand according to claim 1, characterized in that: The concrete mixing tank (1) is equipped with a mixing roller that is rotatably mounted inside via a rotating shaft. A mixing motor is installed at the center of the bottom of the concrete mixing tank (1). The drive shaft of the mixing motor passes through the bottom of the concrete mixing tank (1) and is connected to the mixing roller. The drive shaft of the mixing motor is rotatably connected to the concrete mixing tank (1) via a bearing.

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