Lost foam casting coating anti-settling mixer

Abstract

This utility model relates to the technical field of lost foam casting equipment, specifically, to a coating anti-settling mixer for lost foam casting. It includes a mixing tank with a servo motor externally mounted to drive it to rotate vertically. A conical cylinder is fixedly installed at the bottom of the mixing tank, and a vertical pipe is fixedly installed at the bottom of the conical cylinder. A discharge valve is fixedly installed on the vertical pipe. A detachable top cover is installed on the top of the mixing tank, and a stirring motor is fixedly installed at the center of the top of the top cover. A stirring shaft is fixedly installed at the end of the output shaft of the stirring motor, and stirring blades are fixedly installed on the stirring shaft, located inside the mixing tank. This utility model provides better stirring effect, improves mixing efficiency, and ensures that the coating performance meets requirements.

Description

Technical Field

[0001] This utility model relates to the technical field of lost foam casting equipment, specifically to a coating anti-settling mixer for lost foam casting. Background Technology

[0002] Lost foam casting is widely used in the modern foundry industry. This process requires applying a high-temperature resistant coating to the surface of the white foam to ensure the smooth progress of the casting process and guarantee the quality of the castings. The coating used in lost foam casting is generally a water-based coating, which is made by mixing dry powder coating with a certain proportion of clean water and is a suspension solution.

[0003] Currently, in the lost foam casting process, the equipment used for stirring the coating is often a vertical cylindrical stirring device. On the one hand, during the stirring process, the coating tends to settle to the bottom of the container, resulting in a thinner upper layer coating concentration. This fails to meet the performance and thickness requirements of the white foam coating, greatly affecting the surface quality of the product and reducing the quality of the high-temperature coating on the white foam surface during the lost foam casting process.

[0004] On the other hand, some mixers only employ simple mixing methods, such as a single rotating impeller, which makes it difficult to ensure that the various components of the coating are fully and evenly mixed. This is especially true when mixing highly viscous wet materials with additives, where the additives tend to float on the surface of the wet materials, resulting in low mixing efficiency and poor performance, thus affecting the mixing effect. Therefore, we propose a coating anti-settling mixer for lost foam casting. Utility Model Content

[0005] The purpose of this invention is to provide a coating anti-settling mixer for lost foam casting, so as to solve the defects mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A coating anti-settling mixer for lost foam casting includes a mixing tank. A servo motor is externally mounted on the mixing tank to drive it to rotate vertically. A conical cylinder is fixedly installed at the bottom of the mixing tank, and a vertical pipe is fixedly installed at the bottom of the conical cylinder. A discharge valve is fixedly installed on the vertical pipe. A top cover is detachably installed on the top of the mixing tank. A stirring motor is fixedly installed at the center of the top of the top cover. A stirring shaft is fixedly installed at the end of the output shaft of the stirring motor, and stirring blades are fixedly installed on the stirring shaft. The stirring blades are located inside the mixing tank.

[0007] Preferably, the conical cylinder is funnel-shaped, and the plane containing the inner wall of the conical cylinder is inclined downward at 45°~60°; This setting facilitates unloading operations.

[0008] Preferably, a sealing ring is embedded in the top surface of the mixing tank, and the top cover is detachably installed on the top surface of the mixing tank by a plurality of fastening bolts; This feature improves the sealing effect of the top cover.

[0009] Preferably, the inner wall of the mixing tank is provided with a smooth non-stick layer, the thickness of which is between 0.5mm and 1.2mm; This smooth, non-stick layer helps prevent materials from sticking together.

[0010] Preferably, a mechanical seal is fixedly installed at the center of the top surface of the top cover, the output shaft of the stirring motor passes through the mechanical seal and is rotatably connected to the mechanical seal, and the stirring motor is mounted on the housing of the mechanical seal; This setting enables proper sealing of the part through which the output shaft of the mixing motor passes, preventing leakage.

[0011] Preferably, a feed hood is fixedly installed at the bottom end of the vertical pipe, and the feed hood is funnel-shaped; This setting makes adding raw materials smoother.

[0012] Preferably, a support plate is provided on the outside of the mixing tank, a bearing seat is fixedly installed on the support plate, a rotating shaft is rotatably connected inside the bearing seat, and the output shaft of the servo motor and the end of the rotating shaft are both fixedly installed on the mixing tank; This setting allows the mixing tank to rotate more smoothly.

[0013] Preferably, an arc-shaped fixing plate is fixedly installed at the end of the output shaft of the servo motor and the end of the rotating shaft, and the arc-shaped fixing plate is detachably installed on the mixing tank. Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model uses a servo motor to drive the mixing tank to rotate vertically, while the stirring motor drives the stirring blades on the stirring shaft to stir inside the tank. The two motion modes work together to form a multi-dimensional stirring effect, which allows the components of the coating to be fully and evenly mixed. In particular, it solves the problem that additives tend to float on the surface when mixing highly viscous wet materials with additives, thus improving mixing efficiency and stirring effect and ensuring that the coating performance meets the requirements.

[0014] 2. This utility model, by setting the conical cylinder as a funnel shape and the inner wall inclined, combined with the unloading valve, facilitates the unloading operation of the paint and reduces residue; the smooth non-stick layer on the inner wall of the mixing tank can effectively prevent the paint from sticking to the tank wall, avoid the problem of uneven concentration caused by the paint settling to the bottom of the container, ensure the stability of the upper layer paint concentration, and improve the coating quality of high temperature paint on the white mold surface.

[0015] 3. This utility model enhances the sealing effect of the top cover by setting a sealing ring on the top surface of the mixing tank and by using a detachable installation method for the top cover with fastening bolts; the mechanical seal effectively seals the part through which the output shaft of the mixing motor passes, preventing the leakage of coating during the mixing process, ensuring the airtightness of the mixing environment, and further guaranteeing the mixing quality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is one of the partial structural schematic diagrams of this utility model; Figure 3 This is the second partial structural schematic diagram of the present utility model; Figure 4 This is the third partial structural schematic diagram of the present utility model; The meanings of the labels in the diagram are as follows: 1. Support plate; 10. Servo motor; 11. Rotating shaft; 12. Bearing housing; 13. Arc-shaped fixing plate; 2. Mixing tank; 20. Conical cylinder; 21. Vertical pipe; 22. Discharge valve; 23. Feed hood; 24. Sealing ring; 25. Top cover; 26. Mechanical seal; 27. Mixing motor; 28. Mixing shaft; 281. Mixing blades; 29. ​​Smooth anti-sticking layer. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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. Please see Figures 1-4This utility model provides a technical solution: a coating anti-settling mixer for lost foam casting, including a mixing tank 2. A servo motor 10 is installed outside the mixing tank 2 to drive it to rotate vertically. A conical cylinder 20 is fixedly installed at the bottom of the mixing tank 2, and a vertical pipe 21 is fixedly installed at the bottom of the conical cylinder 20. A discharge valve 22 is fixedly installed on the vertical pipe 21, enabling discharge operations at the vertical pipe 21. A top cover 25 is detachably installed on the top of the mixing tank 2. A stirring motor 27 is fixedly installed at the center of the top of the top cover 25. A stirring shaft 28 is fixedly installed at the end of the output shaft of the stirring motor 27. Stirring blades 281 are fixedly installed on the stirring shaft 28, located inside the mixing tank 2. The servo motor 10 drives the mixing tank 2 to rotate vertically, and the stirring motor 27 drives the stirring blades 281 to stir inside the tank. The two movements work together to make the coating mix more evenly, effectively preventing sedimentation and improving the stirring effect.

[0018] like Figure 2 As shown, the conical cylinder 20 is funnel-shaped, and the plane of the inner wall of the conical cylinder 20 is inclined downward at 45°~60°. Together with the unloading valve 22 on the vertical pipe 21, the unloading process is smoother, the paint residue in the tank is reduced, and the unloading efficiency is improved.

[0019] In this embodiment, a sealing ring 24 is embedded in the top surface of the mixing tank 2, and the top cover 25 is detachably installed on the top surface of the mixing tank 2 by multiple fastening bolts, which enhances the sealing between the top cover 25 and the mixing tank 2, prevents paint leakage during the mixing process, and ensures the stability of the mixing environment.

[0020] like Figure 3 As shown, a smooth anti-stick layer 29 is provided on the inner wall of the mixing tank 2. The thickness of the smooth anti-stick layer 29 is between 0.5mm and 1.2mm, which can effectively reduce the adhesion of the coating to the tank wall, avoid uneven precipitation of the coating due to adhesion to the wall, and ensure the consistency of the coating concentration.

[0021] like Figure 3 As shown, a mechanical seal 26 is fixedly installed at the center of the top surface of the top cover 25. The output shaft of the stirring motor 27 passes through the mechanical seal 26 and is rotatably connected to the mechanical seal 26. The stirring motor 27 is mounted on the housing of the mechanical seal 26 to effectively seal the part where the output shaft of the stirring motor 27 passes through, further preventing paint leakage and ensuring the safety and reliability of the stirring process.

[0022] Specifically, a feed hood 23 is fixedly installed at the bottom of the vertical pipe 21. The feed hood 23 is funnel-shaped, which makes the raw material addition operation more convenient and smooth, reduces the occurrence of raw material spillage, and improves the raw material addition efficiency.

[0023] Furthermore, a support plate 1 is provided on the outside of the mixing tank 2, and a bearing seat 12 is fixedly installed on the support plate 1. A rotating shaft 11 is rotatably connected inside the bearing seat 12. The output shaft of the servo motor 10 and the end of the rotating shaft 11 are both fixedly installed on the mixing tank 2, providing stable support for the rotation of the mixing tank 2, making the rotation of the mixing tank 2 more stable and smooth, and ensuring the stable progress of the mixing process.

[0024] In addition, arc-shaped fixing plates 13 are fixedly installed at the end of the output shaft of the servo motor 10 and the end of the rotating shaft 11. The arc-shaped fixing plates 13 can be detachably installed on the mixing tank 2, which facilitates the installation, disassembly and maintenance of the mixing tank 2, while ensuring the firmness of the connection between the servo motor 10 and the rotating shaft 11 and the mixing tank 2, and ensuring the stability of power transmission.

[0025] Finally, it should be noted that the servo motor 10 is controlled by the corresponding servo system, and the rotation angle of the output shaft of the servo motor 10 is less than 360°. The output shaft of the servo motor 10 rotates in a reciprocating motion. For example, the output shaft of the servo motor 10 first rotates 180° clockwise, then 180° counterclockwise to return to the starting point, then continues to rotate 180° counterclockwise, then 180° clockwise to return to the starting point, and so on, to avoid the servo motor 10's rotation angle being too large and affecting the normal wiring and other operations of the stirring motor 27. The servo motor 10, stirring motor 27, corresponding servo control system, and external power supply components involved in this utility model are all general standard parts or components known to those skilled in the art. Their structures and principles are known to those skilled in the art through technical manuals or conventional experimental methods. In the idle spaces of this device, all the above-mentioned electrical components, referring to power elements, electrical components, and the adapted controller and power supply, are connected by wires. The specific connection methods should refer to the working principle of this utility model. The electrical connections between each electrical component are completed according to the sequential working order, and the detailed connection methods are all technologies known in the art.

[0026] When using the coating anti-settling mixer of the lost foam casting of this utility model, the servo motor 10 first drives the mixing tank 2 to rotate until the feeding hood 23 faces upward. At this time, dry powder coating and water and other raw materials are added into the mixing tank 2 through the feeding hood 23, and the unloading valve 22 is closed. Start the servo motor 10 to drive the mixing tank 2 to rotate in the vertical direction with a rotation angle of less than 360°. At the same time, start the stirring motor 27 on the top cover 25. Its output shaft drives the stirring shaft 28 and stirring blades 281 to rotate through the mechanical seal 26. The two movements work together to stir. During mixing, the smooth anti-stick layer 29 on the inner wall of the mixing tank 2 reduces paint adhesion. After mixing is completed, turn off the two motors and rotate the mixing tank 2 so that the feed hood 23 faces downward. Then open the discharge valve 22 on the vertical pipe 21 and the funnel-shaped cone 20 guides the paint to be discharged. After the discharge is completed, the top cover 25 can be removed to clean the residue inside the tank.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A coating anti-settling mixer for lost foam casting, comprising a mixing tank (2), characterized in that: The mixing tank (2) is provided with a servo motor (10) for driving the mixing tank (2) to rotate in the vertical direction. A conical cylinder (20) is fixedly installed at the bottom end of the mixing tank (2). A vertical pipe (21) is fixedly installed at the bottom end of the conical cylinder (20). A discharge valve (22) is fixedly installed on the vertical pipe (21). A top cover (25) is detachably installed on the top of the mixing tank (2). A stirring motor (27) is fixedly installed at the center of the top of the top cover (25). A stirring shaft (28) is fixedly installed at the end of the output shaft of the stirring motor (27). A stirring blade (281) is fixedly installed on the stirring shaft (28). The stirring blade (281) is located inside the mixing tank (2).

2. The coating anti-settling mixer for lost foam casting according to claim 1, characterized in that: The conical cylinder (20) is funnel-shaped, and the plane of the inner wall of the conical cylinder (20) is inclined downward at 45°~60°.

3. The coating anti-settling mixer for lost foam casting according to claim 1, characterized in that: The top surface of the mixing tank (2) is fitted with a sealing ring (24), and the top cover (25) is detachably installed on the top surface of the mixing tank (2) by a plurality of fastening bolts.

4. The coating anti-settling mixer for lost foam casting according to claim 1, characterized in that: The inner wall of the mixing tank (2) is provided with a smooth anti-stick layer (29), the thickness of which is between 0.5 mm and 1.2 mm.

5. The coating anti-settling mixer for lost foam casting according to claim 1, characterized in that: A mechanical seal (26) is fixedly installed at the center of the top surface of the top cover (25). The output shaft of the stirring motor (27) passes through the mechanical seal (26) and is rotatably connected to the mechanical seal (26). The stirring motor (27) is mounted on the housing of the mechanical seal (26).

6. The coating anti-settling mixer for lost foam casting according to claim 1, characterized in that: The bottom end of the vertical tube (21) is fixedly installed with a feed hood (23), which is horn-shaped.

7. The coating anti-settling mixer for lost foam casting according to claim 1, characterized in that: The mixing tank (2) is provided with a support plate (1) on the outside. A bearing seat (12) is fixedly installed on the support plate (1). A rotating shaft (11) is rotatably connected inside the bearing seat (12). The output shaft of the servo motor (10) and the end of the rotating shaft (11) are both fixedly installed on the mixing tank (2).

8. The coating anti-settling mixer for lost foam casting according to claim 7, characterized in that: Both the output shaft end of the servo motor (10) and the end of the rotating shaft (11) are fixedly mounted with arc-shaped fixing plates (13), which are detachably mounted on the mixing tank (2).

Images