Mass concrete proportioning and stirring device

Abstract

The utility model belongs to the technical field of concrete mixing, and particularly relates to a large-volume concrete proportioning and mixing device which comprises a mixing tank, a feeding pipe is mounted at the upper end of the mixing tank, a spiral feeding plate is fixedly mounted in a particle bin, and a feeding port matched with the spiral feeding plate is formed in the upper end of the particle bin. The upper end of the interior of the particle bin is rotatably provided with a dustproof cylinder, the upper end of the particle bin is provided with a driving motor which is in transmission connection with the dustproof cylinder, the side surface of the stirring tank is provided with a suction fan, the interior of the particle bin is fixedly provided with a communication pipeline, and the communication pipeline is communicated with the suction fan and the interior of the dustproof cylinder. Flying dust is sucked and gathered towards the dustproof barrel through suction of the suction fan, dust flying is reduced, the rotating dustproof barrel can further abut against the spiral feeding plate to rotate, then the adsorbed dust is scraped, and the situation that too much dust is gathered, and adsorption of the suction fan is affected is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of concrete mixing technology, specifically relating to a large-volume concrete proportioning and mixing device. Background Technology

[0002] Modern construction frequently involves the construction of large-volume concrete structures, such as high-rise building foundations, large equipment foundations, and hydraulic dams. Its main characteristics are its large volume, with the smallest cross-section having a dimension of at least 1 meter in any direction. It also has a relatively small surface area, resulting in a concentrated release of heat from cement hydration and rapid internal heating.

[0003] Existing concrete mixing equipment typically generates dust when aggregates are added, which then rises and is inhaled by operators. Prolonged exposure to dust can harm operators' health. Therefore, it is necessary to suppress dust generation when adding aggregates. Utility Model Content

[0004] The purpose of this invention is to provide a large-volume concrete mixing device to solve the problems existing in the background art.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:

[0006] A large-volume concrete mix proportioning and mixing device includes a mixing tank, a feed pipe installed at the upper end of the mixing tank, a mixing mechanism installed inside the mixing tank, and a feed mechanism installed at the upper end of the mixing tank.

[0007] The feeding mechanism includes a pellet bin fixedly installed with the mixing tank. A spiral feed plate is fixedly installed inside the pellet bin. A feed port matching the spiral feed plate is opened at the upper end of the pellet bin. A dustproof cylinder is rotatably installed at the upper end of the pellet bin. The dustproof cylinder is rotatably installed with the spiral feed plate. A drive motor connected to the dustproof cylinder is installed at the upper end of the pellet bin. A suction fan is installed on the side of the mixing tank. A connecting pipe is fixedly installed inside the pellet bin. The connecting pipe is connected to the suction fan and the inside of the dustproof cylinder.

[0008] An extension cylinder is installed at the upper end of the feed inlet.

[0009] The connecting pipe is rotatably and sealed to the dustproof cylinder, and the filter holes in the dustproof cylinder are lower than those in the connecting pipe.

[0010] The stirring mechanism includes a stirring shaft fixedly connected to a dustproof cylinder, and several stirring rods are fixedly installed around the stirring shaft.

[0011] The output end of the drive motor is connected to a first conical tooth, and the upper end of the dustproof cylinder is fixedly installed with an annular conical tooth that meshes with the first conical tooth.

[0012] The lower end of the dustproof cylinder is connected to the mixing tank. A sealing cover that abuts against and seals the dustproof cylinder is fixedly installed around the mixing shaft. A limit plate is fixedly installed through the dustproof cylinder. A spring is fixedly installed between the limit plate and the dustproof cylinder. A limit rod that slides up and down with the mixing shaft is fixedly installed at the lower end of the sealing cover.

[0013] A scraper ring is fixedly installed on the periphery of the stirring shaft inside the dustproof cylinder, and the scraper ring abuts against the inner side of the dustproof cylinder.

[0014] This invention can convey granular raw materials through a spiral feeding plate, avoiding dust from directly colliding with the plane and causing it to fly around. At the same time, the suction fan draws the flying dust into the dustproof cylinder, further reducing dust flying around. The rotating dustproof cylinder can also come into contact with the spiral feeding plate and rotate, thereby scraping the adsorbed dust and preventing excessive dust accumulation from affecting the suction fan's adsorption. Attached Figure Description

[0015] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the structure of a large-volume concrete proportioning and mixing device according to the present invention.

[0017] Figure 2 This is a schematic diagram of the first cross-sectional structure of a large-volume concrete proportioning and mixing device according to the present invention.

[0018] Figure 3 This is a schematic diagram of the second cross-sectional structure of a large-volume concrete proportioning and mixing device according to the present invention.

[0019] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0020] Figure 5 This is a schematic diagram of the third cross-sectional structure of a large-volume concrete mixing device according to the present invention.

[0021] The symbols for the main components are explained below:

[0022] 1. Mixing tank, 11. Feed pipe, 12. Particle bin, 13. Spiral feeder plate, 14. Dustproof cylinder, 15. Drive motor, 16. Suction fan, 17. Connecting pipe, 20. Extension cylinder, 21. Mixing shaft, 22. Mixing rod, 23. First conical tooth, 24. Annular conical tooth, 25. Sealing cover, 26. Limiting plate, 27. Spring, 28. Scraper ring, 29. Limiting rod. Detailed Implementation

[0023] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] Example 1: As Figure 1-5 As shown, the present invention provides a large-volume concrete mix proportioning and mixing device, including a mixing tank 1, a feed pipe 11 installed at the upper end of the mixing tank 1, a mixing mechanism installed inside the mixing tank 1, and a feeding mechanism installed at the upper end of the mixing tank 1.

[0025] The feeding mechanism includes a pellet bin 12 fixedly installed with the mixing tank 1. A spiral feeder plate 13 is fixedly installed inside the pellet bin 12. A feed inlet matching the spiral feeder plate 13 is opened at the upper end of the pellet bin 12. A dustproof cylinder 14 is rotatably installed at the upper end of the pellet bin 12. The dustproof cylinder 14 is rotatably installed with the spiral feeder plate 13. A drive motor 15 connected to the dustproof cylinder 14 is installed at the upper end of the pellet bin 12. A suction fan 16 is installed on the side of the mixing tank 1. A connecting pipe 17 is fixedly installed inside the pellet bin 12. The connecting pipe 17 is connected to the suction fan 16 and the dustproof cylinder 14.

[0026] The spiral feed plate 13 has a through-hole for ventilation. This allows the suction fan 16 to draw air from inside the dustproof cylinder 14 without obstructing ventilation. When preparing large volumes of concrete, granular materials such as cement and aggregates, which are prone to generating dust, are fed into the mixing tank 1 through the particle hopper 12. Before the granular materials enter the particle hopper, the suction fan 16 is activated to draw air and airborne dust from the particle hopper 12 towards the dustproof cylinder 14. This process ensures that the airborne dust is effectively controlled as the granular materials continuously enter the particle hopper 12. Adsorption occurs, and the granular raw material moves downward along the spiral feed plate 13 into the mixing tank 1. At the same time, due to the spiral arrangement of the spiral feed plate 13, the granular raw material tends to slide downward, thus reducing the impact and flying of dust. Simultaneously, the drive motor 15 and the stirring mechanism are started to work, so that the granular raw material, water and other additives entering the mixing tank 1 are mixed. When the drive motor 15 is working, it will drive the dustproof cylinder 14 to rotate. The rotation of the dustproof cylinder 14 scrapes the dust attached to its outside through the spiral feed plate 13, avoiding the blockage of the dustproof cylinder 14.

[0027] This invention can convey granular raw materials through a spiral feeding plate, avoiding dust from directly colliding with the plane and causing it to fly around. At the same time, the suction fan draws the flying dust into the dustproof cylinder, further reducing dust flying around. The rotating dustproof cylinder can also come into contact with the spiral feeding plate and rotate, thereby scraping the adsorbed dust and preventing excessive dust accumulation from affecting the suction fan's adsorption.

[0028] An extension tube 20 is installed at the upper end of the feed inlet to facilitate the feeding of granular raw materials into the granule bin 12.

[0029] The connecting pipe 17 is rotatably and sealed to the dustproof cylinder 14, and the filter hole in the dustproof cylinder 14 is lower than that in the connecting pipe 17. The connecting pipe 17 and the dustproof cylinder 14 are rotatably and sealed, so no matter what angle the dustproof cylinder 14 is rotated to, its filter hole will be connected to the connecting pipe 17, and then the suction fan 16 will suck up the inside of the dustproof cylinder 14.

[0030] Example 2: Based on Example 1, a further improvement is made. The stirring mechanism includes a stirring shaft 21 fixedly connected to the dustproof cylinder 14, and several stirring rods 22 are fixedly installed around the stirring shaft 21.

[0031] When the dustproof cylinder 14 rotates, it drives the stirring shaft 21 and stirring rod 22 to rotate, thereby mixing and stirring the raw materials inside the mixing tank 1 to prepare concrete.

[0032] The output end of the drive motor 15 is connected to a first conical tooth 23, and the upper end of the dustproof cylinder 14 is fixedly installed with an annular conical tooth 24 that meshes with the first conical tooth 23. When the drive motor 15 starts, it drives the first conical tooth 23 to rotate, which in turn drives the annular conical tooth 24 that meshes with it to rotate. When the annular conical tooth 24 rotates, it drives the dustproof cylinder 14 to rotate.

[0033] The lower end of the dustproof cylinder 14 is connected to the mixing tank 1. A sealing cover 25 is fixedly installed around the mixing shaft 21, which abuts against and seals the dustproof cylinder 14. A limiting rod 29 is fixedly installed at the lower end of the sealing cover 25, which slides up and down with the mixing shaft 21. A limiting plate 26 is fixedly installed through the dustproof cylinder 14 through the limiting rod 29. A spring 27 is fixedly installed between the limiting plate 26 and the dustproof cylinder 14. A scraper ring 28 is fixedly installed inside the dustproof cylinder 14 around the mixing shaft 21, and the scraper ring 28 abuts against the inner side of the dustproof cylinder 14.

[0034] In the initial state, the spring 27 drives the sealing cover 25 and the limiting rod 29 to move upward and abut against the lower end of the dustproof cylinder 14, thereby sealing the lower end of the dustproof cylinder 14. At this time, the limiting rod 29 is located inside the stirring shaft 21. Thus, when the drive motor 15 drives the dustproof cylinder 14 to rotate, it will drive the limiting rod 29 to rotate, thereby driving the stirring shaft 21 and stirring rod 22 to rotate through the limiting post 29.

[0035] When it is necessary to clean the inside of the dustproof cylinder 14, the limiting plate 26 moves downward against the rebound force of the spring 27, and then the limiting rod 29 and the sealing cover 25 protrude downward from the lower end of the dustproof cylinder 14. Then, the scraper ring 28, which moves up and down, scrapes the inside of the dustproof cylinder 14, and then the dust falls out from the lower end of the dustproof cylinder 14.

[0036] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A large-volume concrete mix design device, comprising a mixing tank, a feed pipe installed at the upper end of the mixing tank, and a mixing mechanism installed inside the mixing tank, characterized in that: The mixing tank is equipped with a feeding mechanism at its upper end; The feeding mechanism includes a pellet bin fixedly installed with the mixing tank. A spiral feed plate is fixedly installed inside the pellet bin. A feed port matching the spiral feed plate is opened at the upper end of the pellet bin. A dustproof cylinder is rotatably installed at the upper end of the pellet bin. The dustproof cylinder is rotatably installed with the spiral feed plate. A drive motor connected to the dustproof cylinder is installed at the upper end of the pellet bin. A suction fan is installed on the side of the mixing tank. A connecting pipe is fixedly installed inside the pellet bin. The connecting pipe is connected to the suction fan and the inside of the dustproof cylinder.

2. The large-volume concrete mixing device according to claim 1, characterized in that: An extension cylinder is installed at the upper end of the feed inlet.

3. The large-volume concrete proportioning and mixing device according to claim 1, characterized in that: The connecting pipe is rotatably and sealed to the dustproof cylinder, and the filter holes in the dustproof cylinder are lower than those in the connecting pipe.

4. The large-volume concrete proportioning and mixing device according to claim 1, characterized in that: The stirring mechanism includes a stirring shaft fixedly connected to a dustproof cylinder, and several stirring rods are fixedly installed around the stirring shaft.

5. A large-volume concrete mixing device according to claim 4, characterized in that: The output end of the drive motor is connected to a first conical tooth, and the upper end of the dustproof cylinder is fixedly installed with an annular conical tooth that meshes with the first conical tooth.

6. The large-volume concrete proportioning and mixing device according to claim 5, characterized in that: The lower end of the dustproof cylinder is connected to the mixing tank. A sealing cover that abuts against and seals the dustproof cylinder is fixedly installed around the mixing shaft. A limit plate is fixedly installed through the dustproof cylinder. A spring is fixedly installed between the limit plate and the dustproof cylinder. A limit rod that slides up and down with the mixing shaft is fixedly installed at the lower end of the sealing cover.

7. A large-volume concrete proportioning and mixing device according to claim 6, characterized in that: A scraper ring is fixedly installed on the periphery of the stirring shaft inside the dustproof cylinder, and the scraper ring abuts against the inner side of the dustproof cylinder.

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