Efficient sand mixer for machining castings
By using a rotating body and a motor-driven reverse stirring rod design, combined with automatic proportioning via gravity sensors, the problems of incomplete mixing and proportioning errors in existing sand mixers have been solved, achieving efficient casting molding.
Patent Information
- Application Number
- CN202423304159.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-03-06
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing sand mixers are not effective at mixing sand and binders, resulting in poor casting quality and difficulty in accurately proportioning the sand and binder.
It adopts a rotatable body design, and the control rod and stirring rod are rotated in opposite directions by a separate motor. Combined with a gravity sensor, the ratio of sand and binder is automatically controlled to achieve efficient mixing.
It improves the mixing effect of sand and binder, reduces the ratio error, and improves the forming quality of castings.
Smart Images
Figure CN223970801U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of casting production, specifically a high-efficiency sand mixer for processing castings. Background Technology
[0002] A sand mixer is a type of foundry machinery primarily used to mix sand and binder. In the foundry industry, sand mixers can combine different types and shapes of sand with binders, allowing the binder to fully penetrate the sand, thereby improving the forming accuracy and quality of the castings. Furthermore, sand mixers can mix various sand mold materials to create castings that meet the required shape and size. Existing sand mixers primarily use a motor to drive a stirring rod to mix sand and binder. However, this method is difficult to thoroughly mix the sand and binder, thus affecting the quality of the formed castings. Additionally, the ratio of sand to binder usually needs to be manually measured, which can lead to deviations in specific gravity, further affecting the quality of the castings. Therefore, we provide a high-efficiency sand mixer for processing castings to solve these problems. Utility Model Content
[0003] To address the aforementioned problems, specifically those raised in the background section, this utility model proposes a high-efficiency sand mixer for processing castings. The mixer includes a machine body with a base frame at its bottom. An annular groove is formed at the top of the base frame. A connecting ring, which mates with the annular groove, is integrally formed at the bottom of the machine body. The connecting ring is rotatably connected to the inner cavity of the annular groove via a bearing. A cylindrical body is fixedly installed through the bottom of the machine body and rotatably connected to the inside of the base frame via a bearing. A rod is rotatably installed within the inner cavity of the cylindrical body. A motor is installed inside the base frame. A reducer is fixedly connected to the output end of the motor. A drive wheel is fixedly connected to the output end of the reducer. A driven wheel one and a driven wheel two mesh on opposite sides of the drive wheel. The driven wheel one is fixedly connected to a rotating shaft, and the driven wheel two is fixedly connected to the cylindrical body. A stirring rod is fixedly installed on both the inner wall of the machine body and the outer wall of the rotating shaft. A base plate is located below the base frame, and the base plate is connected to the base frame via a gravity sensor.
[0004] Preferably, the cross-section of the stirring rod is rhomboid, and a control valve is connected to the bottom of the side wall of the machine body.
[0005] Preferably, the gravity sensors are configured as four and are arranged at equal intervals.
[0006] Preferably, a connecting plate is fixedly connected to the support legs of the base frame, the rotating shaft is rotatably connected to the inside of the connecting plate through a bearing, and the motor is installed on the top side of the connecting plate.
[0007] Preferably, the bottom of the inner cavity of the machine body is provided with several bottom rods, and the bottom rods are all fixedly set on the outer wall of the rotating shaft. The cross-section of the bottom rods is set as a triangle.
[0008] The beneficial technical effects of this utility model are as follows: By setting a rotatable machine body and driving it with a separate motor, the mixing rods on the outer wall and the inner wall of the machine body are rotated in opposite directions, thereby improving the mixing effect of sand and binder; at the same time, by setting a gravity sensor at the bottom of the machine body, the ratio of sand and binder can be more conveniently adjusted, reducing the ratio error and thus improving the quality of the mixture. Attached Figure Description
[0009] Figure 1 A cross-sectional structural schematic diagram of the present invention is shown.
[0010] Attached figures: 1. Machine body; 2. Base frame; 3. Annular groove; 4. Connecting ring; 5. Cylinder; 6. Rod; 7. Motor; 8. Reducer; 9. Drive wheel; 10. Driven wheel one; 11. Driven wheel two; 12. Stirring rod; 13. Connecting plate; 14. Base plate; 15. Gravity sensor; 16. Control valve; 17. Base rod. Detailed Implementation
[0011] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.
[0012] This utility model proposes a high-efficiency sand mixer for processing castings, comprising a machine body 1, a control valve 16 connected to the bottom of the side wall of the machine body 1, a base frame 2 at the bottom of the machine body 1, an annular groove 3 at the top of the base frame 2, a connecting ring 4 integrally formed at the bottom of the machine body 1 to mate with the annular groove 3, the connecting ring 4 being rotatably connected to the inner cavity of the annular groove 3 via a bearing, a cylindrical body 5 fixedly installed through the bottom of the machine body 1, the cylindrical body 5 being rotatably connected to the inside of the base frame 2 via a bearing, and a rod 6 rotatably installed in the inner cavity of the cylindrical body 5, a connecting plate 13 fixedly connected to the support legs of the base frame 2, a rotating shaft being rotatably connected to the inside of the connecting plate 13 via a bearing, a motor 7 installed on the top side of the connecting plate 13, the motor 7 being installed inside the base frame 2, a reducer 8 fixedly connected to the output end of the motor 7, and a drive wheel 9 fixedly connected to the output end of the reducer 8. Driven wheel 10 and driven wheel 2 11 are respectively engaged on both sides of the drive wheel 9. Driven wheel 10 is fixedly connected to the rotating shaft, and driven wheel 2 11 is fixedly connected to the cylinder 5. Stirring rods 12 are fixedly installed on both the inner wall of the machine body 1 and the outer wall of the rotating shaft. The size of driven wheel 10 is smaller than that of driven wheel 2 11, thereby reducing the rotation speed of the machine body 1 and ensuring overall stability. The cross-section of the stirring rod 12 is rhomboid. A base plate 14 is provided below the base frame 2. The base plate 14 is connected to the base frame 2 through a gravity sensor 15. Four gravity sensors 15 are configured and are evenly distributed. Several bottom rods 17 are provided at the bottom of the inner cavity of the machine body 1. Several bottom rods 17 are fixedly installed on the outer wall of the rotating shaft. The cross-section of the bottom rod 17 is triangular, and one side is attached to the bottom surface of the machine body 1 to facilitate cleaning of the mixture at the bottom of the machine body 1.
[0013] For those skilled in the art, all electrical components and parts in this case are general standard parts or parts known to those skilled in the art. Their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods. All models are compatible with this solution and can operate normally. All electrical components in this case are connected to their compatible power supplies through wires. According to the actual situation, a suitable controller is selected to meet the control requirements. The specific connection and control sequence should refer to the working principle below, and the electrical connection is completed by the sequential operation of each electrical component. The detailed connection method is a well-known technology in the art, and the electrical control will not be described further.
[0014] Working principle: When mixing sand and adhesive, four synchronously controlled gravity sensors 15 can be activated, and sand is poured into the inner cavity of the machine body 1. When the gravity sensor 15 displays the required value, the sand filling stops. At this time, the adhesive is poured into the machine body 1, and the amount of adhesive is controlled according to the value displayed by the gravity sensor 15. After the mixing ratio is completed, the motor 7 can be activated. The operation of the motor 7 can reduce the output speed through the reducer 8 and transmit the power to the drive wheel 9. The drive wheel 9 can simultaneously drive the driven wheel 10 and the driven wheel 11 to rotate, which in turn drives the rod 6 and the cylinder 5 to rotate in opposite directions. The cylinder 5 can drive the machine body 1 to rotate, which in turn makes the stirring rod 12 on the outer wall of the rod 6 rotate, realizing the mixing of sand and adhesive in the inner cavity of the machine body 1. After the mixing is completed, the control valve 16 can be opened. At the same time, the rod 6 can drive the bottom rod 17 to rotate, which generates centrifugal force in the mixture in the inner cavity of the machine body 1, thereby causing the mixture to be discharged from the inner cavity of the machine body 1.
[0015] Although the present invention has been described with reference to preferred embodiments, various modifications can be made to it and components can be replaced with equivalents without departing from the scope of the present invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
[0016] In the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0017] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0018] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.
[0019] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.
Claims
1. A high efficiency sand muller for processing foundry castings, comprising a housing, characterized in that: The bottom of the machine body is provided with a chassis, the top of the chassis is provided with an annular groove, the bottom of the machine body is integrally formed with a connecting ring matched with the annular groove, the connecting ring is rotatably connected to the inner cavity of the annular groove through a bearing, the bottom of the machine body is fixedly provided with a cylinder in a penetrating mode, the cylinder is rotatably connected to the inside of the chassis through a bearing, and the inner cavity of the cylinder is rotatably provided with a rod body, the inside of the chassis is provided with a motor, the output end of the motor is fixedly connected with a speed reducer, the output end of the speed reducer is fixedly connected with a driving wheel, the two sides of the driving wheel are respectively meshed with a driven wheel one and a driven wheel two, the driven wheel one is fixedly connected with the rotating shaft, the driven wheel two is fixedly connected with the cylinder, the inner wall of the machine body and the outer wall of the rotating shaft are both fixedly provided with stirring rods, the bottom of the chassis is provided with a bottom plate, and the bottom plate and the chassis are connected through a gravity sensor.
2. A high efficiency sand muller for processing foundry castings as defined in claim 1 wherein: The cross section of the stirring rod is rhombic, and the bottom of the side wall of the machine body is provided with a control valve.
3. A high efficiency sand muller for processing foundry castings as defined in claim 1 wherein: The gravity sensor is arranged in four and is arranged in equidistant distribution.
4. A high efficiency sand muller for processing foundry castings as defined in claim 1 wherein: The leg of the chassis is fixedly connected with a connecting plate, the rotating shaft is rotatably connected to the inside of the connecting plate through a bearing, and the motor is installed on one side of the top of the connecting plate.
5. A high efficiency sand muller for processing foundry castings as defined in claim 1 wherein: The inner cavity of the machine body is provided with a plurality of bottom rods, and the plurality of bottom rods are fixedly arranged on the outer wall of the rotating shaft. The cross section of the bottom rod is triangular.