Mixing device for precoated sand

Abstract

The utility model relates to the technical field of precoated sand processing, and discloses a mixing device for precoated sand, which comprises a barrel body, the upper end of the inner wall of the barrel body is fixedly connected with a gear ring, the top end of the barrel body is provided with a cover, the inner wall of the cover is rotatably connected with a rotating shaft, the outer wall of the rotating shaft is fixedly connected with a plurality of stirring plates I, and the stirring plates I are fixedly connected with the stirring plates II. A mixing assembly used for improving the stirring efficiency is arranged on the outer wall of the rotating shaft, a control panel is installed on the outer wall of the rear side of the barrel body, a heating pipe is fixedly connected to the inner wall of the control panel, and the mixing assembly comprises three connecting plates located on the outer wall of the top end of the rotating shaft. According to the utility model, the stirring structure driven by the motor enables the material stirring track to be complicated and the mixing uniformity and efficiency to be obviously improved through the cooperative movement of various stirring plates, and the scraping plate driven by the rotating shaft scrapes along the barrel wall, so that not only can the material adhesion be prevented from influencing the performance, but also the material can be fully mixed, and the mixing quality is ensured.

Description

A mixing apparatus for coated sand Technical Field

[0001] This utility model relates to the field of coated sand processing technology, and in particular to a mixing device for coated sand. Background Technology

[0002] As a crucial foundation of the manufacturing industry, the foundry sector has wide and critical applications in numerous fields, such as automobile manufacturing, machinery equipment, and aerospace. Coated sand, with its excellent formability, collapsibility, and high strength, has become an indispensable molding and core-making material in modern casting processes. With the increasing demands for casting quality in the manufacturing industry, such as more stringent standards for dimensional accuracy, surface quality, and internal microstructure, the quality of coated sand, which is closely related to these aspects, is receiving increasing attention.

[0003] Existing mixing methods are mostly limited to conventional structures and motion patterns. Common single-shaft mixers can only drive materials in simple circular motions, failing to create complex and thorough flow trajectories. This makes it difficult to achieve comprehensive and deep uniform mixing within the mixing vessel. Simultaneously, material adhesion issues significantly negatively impact the quality of coated sand. During the mixing process, viscous materials such as resins easily adhere to the inner walls of the mixing equipment. Over time, the amount of adhered material increases, hindering normal heat conduction within the device. This results in uneven heating of materials at different locations, affecting the coating reaction between the resin and sand particles, leading to unstable quality of the final coated sand and difficulty in meeting high production standards. Summary of the Invention

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a mixing device for coated sand, which solves the problems of poor mixing effect, material adhesion affecting quality, and insufficient raw material ratio accuracy in existing coated sand mixing technologies.

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

[0006] A mixing device for coated sand includes a barrel body, a toothed ring fixedly connected to the upper end of the inner wall of the barrel body, a cover provided at the top of the barrel body, a rotating shaft rotatably connected to the inner wall of the cover, a plurality of stirring plates fixedly connected to the outer wall of the rotating shaft, a mixing component for improving stirring efficiency provided on the outer wall of the rotating shaft, a control panel installed on the rear outer wall of the barrel body, and a heating tube fixedly connected to the inner wall of the control panel.

[0007] Furthermore, the mixing assembly includes three connecting plates located on the outer wall of the top of the rotating shaft. Each connecting plate is rotatably connected to a rotating rod at its end, and each rotating rod is fixedly connected to a plurality of stirring plates.

[0008] Furthermore, each of the rotating rods is fixedly connected to a gear at its top end, and the gear meshes with the gear ring.

[0009] Furthermore, connecting rods are fixedly connected to both the left and right sides of the lower end of the outer wall of the rotating shaft, and a scraper is fixedly connected to one end of each connecting rod. The outer wall of the scraper is in close contact with the inner wall of the barrel.

[0010] Furthermore, a motor is installed at the top of the cover, and the drive end of the motor is fixedly connected to the top of the rotating shaft.

[0011] Furthermore, a feed pipe is fixedly connected to the left outer wall of the barrel, and a feed inlet is fixedly connected to the top of the feed pipe.

[0012] Furthermore, a fixing plate is fixedly connected to the right outer wall of the barrel, a metering container is fixedly connected to the top of the fixing plate, a conveying pipe is fixedly connected to the top of the metering container, a valve is provided on the outer wall of the conveying pipe, and the conveying pipe is connected to the barrel.

[0013] Furthermore, a discharge port is fixedly connected to the lower end of the rear outer wall of the barrel, and a valve is provided on the outer wall of the discharge port.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the stirring structure driven by the motor makes the material stirring trajectory complex through the coordinated movement of multiple stirring plates, which significantly improves the uniformity and efficiency of mixing. The scraper driven by the rotating shaft scrapes along the barrel wall, which can not only avoid the material adhering and affecting the performance, but also allow the material to fully participate in the mixing, thus ensuring the mixing quality.

[0016] 2. In this utility model, the metering bucket can accurately store materials, providing a precise ratio of raw materials for the coating sand mixing process, ensuring stable product quality. The conveying pipe connects the metering bucket to the bucket body, which can efficiently transport materials to the mixing area, avoid raw material waste, improve production efficiency, and enhance the smoothness of the production process. Attached Figure Description

[0017] Figure 1 is a perspective view of a mixing device for coated sand proposed in this utility model;

[0018] Figure 2 is a schematic diagram of the connecting plate of a mixing device for coated sand proposed in this utility model;

[0019] Figure 3 is a schematic diagram of the connecting rod of a mixing device for coated sand proposed in this utility model.

[0020] Legend:

[0021] 1. Barrel body; 2. Lid; 3. Motor; 4. Rotating shaft; 5. Stirring plate one; 6. Connecting plate; 7. Rotating rod; 8. Stirring plate two; 9. Gear; 10. Gear ring; 11. Connecting rod; 12. Scraper; 13. Control panel; 14. Heating element; 15. Feed pipe; 16. Feed inlet; 17. Fixing plate; 18. Metering barrel; 19. Conveying pipe; 20. Valve one; 21. Discharge port; 22. Valve two. Detailed Implementation

[0022] 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.

[0023] Referring to Figures 1-3, one embodiment of this utility model provides a mixing device for coated sand, including a barrel 1. A toothed ring 10 is fixedly connected to the upper end of the inner wall of the barrel 1. A cover 2 is provided at the top of the barrel 1. A rotating shaft 4 is rotatably connected to the inner wall of the cover 2. A plurality of stirring plates 5 are fixedly connected to the outer wall of the rotating shaft 4. A mixing component for improving stirring efficiency is provided on the outer wall of the rotating shaft 4. A control panel 13 is installed on the rear outer wall of the barrel 1. A heating tube 14 is fixedly connected to the inner wall of the control panel 13. The mixing component includes a heating tube 14 located on the rotating shaft 1. Three connecting plates 6 are attached to the outer wall of the top of the shaft 4. Each connecting plate 6 is rotatably connected to a rotating rod 7. Multiple stirring plates 8 are fixedly connected to the outer wall of the rotating rod 7. A gear 9 is fixedly connected to the top of the rotating rod 7. The gear 9 meshes with the gear ring 10. Connecting rods 11 are fixedly connected to the left and right sides of the lower end of the outer wall of the rotating shaft 4. A scraper 12 is fixedly connected to one end of each connecting rod 11. The outer wall of the scraper 12 is in close contact with the inner wall of the barrel 1. A motor 3 is installed at the top of the cover 2. The drive end of the motor 3 is fixedly connected to the top of the rotating shaft 4.

[0024] A feed pipe 15 is fixedly connected to the left outer wall of the barrel 1, and a feed inlet 16 is fixedly connected to the top of the feed pipe 15. A fixing plate 17 is fixedly connected to the right outer wall of the barrel 1, and a metering tank 18 is fixedly connected to the top of the fixing plate 17. A conveying pipe 19 is fixedly connected to the top of the metering tank 18. A valve 20 is provided on the outer wall of the conveying pipe 19. The conveying pipe 19 is connected to the barrel 1. An outlet 21 is fixedly connected to the lower end of the rear outer wall of the barrel 1. A valve 22 is provided on the outer wall of the outlet 21.

[0025] Specifically, the entire device uses a barrel 1 as its main structure, with a lid 2 positioned at the top. Together, they form a relatively enclosed mixing space for containing coated sand materials for mixing. A motor 3 is mounted at the top of the lid 2. The drive end of the motor 3 is fixedly connected to the top of a rotating shaft 4 located on and passing through the inner wall of the lid 2. This allows the motor 3 to provide rotational power to the rotating shaft 4, driving it to rotate. Multiple stirring plates 5 are fixedly connected to the outer wall of the rotating shaft 4. As the rotating shaft 4 rotates, the stirring plates 5 rotate synchronously, stirring the materials inside the barrel 1 and promoting initial mixing. Three connecting plates 6 are fixedly connected to the outer wall at the top of the rotating shaft 4. They extend outwards from the rotating shaft 4, providing support for subsequent mixing. The installation of the components provides basic structural support. Each connecting plate 6 has a rotating rod 7 rotatably connected to its end, allowing the rotating rod 7 to rotate relative to its connection point with the connecting plate 6, thereby achieving a specific motion trajectory and stirring function. Multiple stirring plates 8 are fixedly connected to the outer wall of the rotating rod 7. When the rotating rod 7 moves, the stirring plates 8 will rotate accordingly, participating in the stirring process of the material and further enhancing the stirring effect. A gear 9 is fixedly connected to the top of the rotating rod 7, and the gear 9 meshes with the gear ring 10 fixedly connected to the upper end of the inner wall of the barrel 1. This meshing relationship means that when the rotating shaft 4 drives the rotating rod 7 to rotate around the connecting plate 6, under the action of the gear ring 10, the rotating rod 7 itself will also rotate around its connection point with the connecting plate 6, thus making the motion trajectory of the stirring plates 8 more complex and greatly improving the stirring efficiency.

[0026] Connecting rods 11 are fixedly connected to both the left and right sides of the lower end of the outer wall of the rotating shaft 4, and scraper 12 is fixedly connected to one end of the connecting rods 11, with the outer wall of scraper 12 in close contact with the inner wall of the barrel 1. In this way, as the rotating shaft 4 rotates, scraper 12 will scrape along the inner wall of the barrel 1. On the one hand, this can prevent material from adhering to the inner wall of the barrel 1 and affecting heat transfer, and on the other hand, it can help to bring the material adhering to the wall back to the mixing area, ensuring thorough mixing of the material.

[0027] The control panel 13 is installed on the rear outer wall of the barrel 1, and the heating tube 14 is fixedly connected to its inner wall. As the control center, the control panel 13 can set and adjust the heating power, heating time and other parameters of the heating tube 14, thereby providing heat to the material in the barrel 1, meeting the temperature requirements in the coating sand mixing process, and enabling the resin and other components to be better mixed and coated with the sand particles.

[0028] The feed pipe 15 is fixedly connected to the left outer wall of the barrel 1. It provides a channel for materials to enter the barrel 1, allowing external materials to flow into the barrel 1 through the feed pipe 15. The feed port 16 is fixedly connected to the top of the feed pipe 15. The feed port 16 guides the materials into the feed pipe 15. Usually, the opening of the feed port 16 is relatively large to facilitate the feeding of materials.

[0029] The fixing plate 17 is fixedly connected to the outer right side of the barrel 1, providing a basic structure for the installation and support of the metering barrel 18. The metering barrel 18 is fixedly connected to the top of the fixing plate 17. The metering barrel 18 is used to store materials that need to be accurately measured, such as resin and additives. One end of the conveying pipe 19 is fixedly connected to the top of the metering barrel 18, and the other end is connected to the barrel 1. Its function is to convey the material in the metering barrel 18 to the barrel 1. The valve 20 is set on the outer wall of the conveying pipe 19. By controlling the opening and closing of the valve 20 and the degree of opening, the flow rate and timing of the material conveyed from the metering barrel 18 to the barrel 1 can be adjusted, thereby realizing the function of metered feeding.

[0030] The discharge port 21 is fixedly connected to the lower end of the rear outer wall of the barrel 1. After the mixing is completed, the coated sand in the barrel 1 can be discharged through the discharge port 21. The valve 22 is set on the outer wall of the discharge port 21. The operator can control the state of the valve 22 to decide whether to carry out the discharge operation and the discharge speed.

[0031] Working principle: The barrel 1 and the lid 2 form a relatively enclosed mixing space for mixing coated sand materials. The motor 3 provides rotational power to the rotating shaft 4, causing it to rotate. The rotation of the rotating shaft 4 drives the mixing plate 5 to rotate synchronously, performing initial mixing of the materials. The three connecting plates 6 on the rotating shaft 4 extend outwards, providing support for the installation of subsequent components. The rotating rods 7, rotatably connected to the ends of the connecting plates 6, can rotate relative to each other, achieving a specific motion trajectory for mixing. The rotation of the rotating rods 7 drives the mixing plate 8 to rotate accordingly, enhancing the mixing effect. The gear 9 at the top of the rotating rod 7 meshes with the gear ring 10 on the inner wall of the barrel 1, causing the rotating rod 7 to rotate, further improving the mixing efficiency. The connecting rod 11 at the lower end of the rotating shaft 4 drives the scraper 12 to scrape along the inner wall of the barrel 1, preventing material from adhering and helping the material return to the mixing zone. The control panel 13 adjusts the heating power, time and other parameters of the heating tube 14 to heat the material to meet the mixing temperature requirements. The material enters the feed pipe 15 through the feed inlet 16 and then flows into the barrel 1. The metering tank 18 stores precisely measured materials, such as resin and additives. The conveying pipe 19 conveys the material in the metering tank 18 to the barrel 1. Valve 1 20 adjusts the conveying flow rate and timing to achieve quantitative feeding. After mixing is completed, the coated sand in the barrel 1 is discharged through the discharge port 21. Valve 2 22 controls the discharge operation and speed.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mixing apparatus for coated sand, characterized in that, The container includes a barrel (1), a toothed ring (10) is fixedly connected to the upper end of the inner wall of the barrel (1), a lid (2) is provided at the top of the barrel (1), a rotating shaft (4) is rotatably connected to the inner wall of the lid (2), a plurality of stirring plates (5) are fixedly connected to the outer wall of the rotating shaft (4), a mixing component for improving stirring efficiency is provided on the outer wall of the rotating shaft (4), a control panel (13) is installed on the rear outer wall of the barrel (1), and a heating tube (14) is fixedly connected to the inner wall of the control panel (13).

2. The mixing apparatus for coated sand according to claim 1, characterized in that: The mixing assembly includes three connecting plates (6) located on the outer wall of the top of the rotating shaft (4). Each connecting plate (6) is rotatably connected to a rotating rod (7), and each rotating rod (7) is fixedly connected to a plurality of stirring plates (8) on its outer wall.

3. The mixing apparatus for coated sand according to claim 2, characterized in that: The top of each rotating rod (7) is fixedly connected to a gear (9), and the gear (9) meshes with the gear ring (10).

4. The mixing apparatus for coated sand according to claim 1, characterized in that: The lower left and right sides of the outer wall of the rotating shaft (4) are fixedly connected to connecting rods (11), and one end of each connecting rod (11) is fixedly connected to a scraper (12). The outer wall of the scraper (12) is in close contact with the inner wall of the barrel (1).

5. The mixing apparatus for coated sand according to claim 1, characterized in that: A motor (3) is installed at the top of the cover (2), and the drive end of the motor (3) is fixedly connected to the top of the rotating shaft (4).

6. The mixing device for coated sand according to claim 1, characterized in that: A feed pipe (15) is fixedly connected to the left outer wall of the barrel (1), and a feed inlet (16) is fixedly connected to the top of the feed pipe (15).

7. The mixing device for coated sand according to claim 1, characterized in that: A fixing plate (17) is fixedly connected to the right outer wall of the barrel (1). A metering barrel (18) is fixedly connected to the top of the fixing plate (17). A conveying pipe (19) is fixedly connected to the top of the metering barrel (18). A valve (20) is provided on the outer wall of the conveying pipe (19). The conveying pipe (19) is connected to the barrel (1).

8. The mixing device for coated sand according to claim 1, characterized in that: The lower end of the rear outer wall of the barrel (1) is fixedly connected to a discharge port (21), and a valve (22) is provided on the outer wall of the discharge port (21).

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