Slurry stirring device for precision casting

Abstract

The utility model relates to a slurry stirring device for precision casting, and aims to solve the problems in the aspects of scattering refractory powder, preventing caking and controlling the temperature of slurry in the conventional stirring technology. The device comprises a slurry barrel, an internal stirring device and an external cooler, the stirring device is provided with three independently rotating stirring wheels, stirring is carried out at different speeds, refractory powder is effectively scattered and prevented from caking, and meanwhile it is guaranteed that no powder is deposited at the bottom and on the side wall of the slurry barrel. The external cooler adopts a water cooling mode to stabilize the temperature of the slurry and ensure the chemical and physical properties of the material to be stable. The device improves the slurry quality, reduces the temperature influence in the production process, and is suitable for the field of precision casting shell making.

Description

Technical Field

[0001] The utility model relates to the field of precision casting shell making, in particular to a slurry stirring device for precision casting. Background Art

[0002] In the field of precision casting shell making, slurry preparation is a crucial link. However, there are several significant problems in the existing mixer technology. First, the traditional mixer design is usually equipped with only pure stirring blades. This design easily leads to powder deposition at the bottom and side walls during the stirring process. This is because the traditional stirring method cannot effectively break up the refractory powder and dissolve it in the silica sol, which makes the powder easy to agglomerate, which not only affects the quality of the slurry, but also reduces production efficiency.

[0003] Secondly, the existing mixers tend to generate a lot of heat when stirring at high speed, which increases the temperature of the slurry. The increase in temperature may affect the stability of the slurry and the performance of the refractory material, which is extremely unfavorable for the precision casting process. The existing technology has not effectively solved this problem, making the slurry easy to heat up during the preparation process, thus affecting the quality and performance of the final product.

[0004] In order to solve the above problems, we urgently need a new type of slurry stirring device, which needs to be able to effectively break up the refractory powder, prevent the powder from agglomerating, and ensure that the powder is not easily deposited on the bottom and side walls of the slurry mixing barrel. At the same time, this new stirring device also needs to have a cooling structure to solve the problem of heating during the slurry preparation process. Utility Model Content

[0005] The utility model aims to provide a slurry stirring device for precision casting, which can break up refractory powder, prevent powder from agglomerating, ensure that powder is not easily deposited on the bottom and side walls of a slurry mixing barrel, and ensure a suitable temperature during stirring to stabilize the relevant chemical and physical properties of the material.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the utility model is to design a slurry stirring device for precision casting, including a slurry barrel, a stirring device and a cooler. The stirring device is arranged inside the slurry barrel and stirs the material inside the slurry barrel by rotation. The cooler is arranged outside the slurry barrel to cool down the material stirred by the slurry barrel.

[0007] Furthermore, the stirring device includes a stirring shaft, a first stirring wheel, a second stirring wheel, a third stirring wheel and a bracket. The first stirring wheel, the second stirring wheel and the third stirring wheel are installed on the stirring shaft from top to bottom, and the material is rotated and stirred by the stirring shaft. The bracket is connected to the uppermost end of the stirring shaft to provide support for the stirring shaft and connect the rotating motor.

[0008] Furthermore, the first stirring wheel and the second stirring wheel are wheel-shaped stirring devices, and rectangular stirring blades that are staggered up and down are arranged around the wheels.

[0009] Furthermore, the third stirring wheel is composed of a stirring rod in an "L" shape.

[0010] Furthermore, the first stirring wheel and the second stirring wheel can rotate independently of the third stirring wheel, and the stirring speed of the first stirring wheel and the second stirring wheel is greater than that of the third stirring wheel.

[0011] Preferably, the rotation speed of the first stirring wheel and the second stirring wheel is 200-3000RPM.

[0012] Preferably, the third stirring wheel has a rotation speed of 15-100RPM.

[0013] Furthermore, the cooler is a water cooling device.

[0014] Preferably, the cooler is a spiral water pipe coiled around the outside of the pulp barrel 1, and cooling water flows through the water pipe, and the temperature of the cooling water can be adjusted.

[0015] Preferably, the water temperature of the cooler is 11-19°C.

[0016] The advantages and beneficial effects of the utility model are as follows: the slurry stirring device for precision casting designed by the utility model realizes the full stirring of materials of different depths by setting three stirring wheels on the stirring device, and the powder is not easy to be deposited on the bottom and side wall of the slurry barrel. By setting different speeds of the three stirring wheels, the refractory powder is fully dissolved in the silica sol, and the powder can be fully dispersed and not easy to agglomerate; by adding a cooling device outside the slurry barrel, the problem of slurry heating during slurry preparation is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a cross-sectional view of the utility model.

[0019] Figure 2 It is an overall schematic diagram of the utility model.

[0020] Among them, 1-slurry barrel, 2-stirring device, 21-stirring shaft, 22-first stirring wheel, 23-second stirring wheel, 24-third stirring wheel, 25-bracket, 26-stirring blade, 27-stirring rod, 3-cooler. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model. In the utility model, unless otherwise stated, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0022] like Figure 1 and Figure 2 As shown, a slurry stirring device for precision casting includes a slurry barrel 1, a stirring device 2 and a cooler 3.

[0023] Slurry barrel 1: As the main part for holding the slurry, its structure is stable and can withstand various forces generated during the mixing process. The shape and size of the slurry barrel are designed according to actual needs to ensure that it can hold enough slurry and provide enough mixing space.

[0024] Stirring device 2: The stirring shaft 21 is the core component of the stirring device. It runs through the entire stirring device and provides stable rotation support for each stirring wheel. The first stirring wheel 22 and the second stirring wheel 23 are designed as flat wheels, and rectangular stirring blades 26 are installed around them. This design can ensure that the slurry is fully stirred in the vertical direction, effectively break up the powder and prevent agglomeration. The third stirring wheel 24 is composed of an "L"-shaped stirring rod 27, which can touch the bottom and side walls of the slurry barrel to prevent the powder from depositing in these places. The speed of the stirring wheel can be controlled independently. The speed range of the first and second stirring wheels is 200-3000RPM, which is used for rapid stirring and breaking up the powder; the speed of the third stirring wheel is slower, ranging from 15-100RPM, to prevent the powder from depositing.

[0025] The stirring device 2 also includes a bracket 25, which is connected to the uppermost end of the stirring shaft 21 to provide a stable support for the stirring shaft and ensure a stable and reliable connection between the stirring shaft and the rotating motor. The design of the bracket takes into account the stability and durability of the structure and can withstand long-term high-intensity stirring work.

[0026] Cooler 3: Cooler 3 is designed as a spiral water pipe surrounding the outside of the slurry barrel 1, and the water pipe is filled with cooling water that can adjust the temperature. The temperature of the cooling water is usually controlled at 11-19°C to ensure that the temperature of the slurry will not be too high during the stirring process, thereby stabilizing the chemical and physical properties of the material. The design of cooler 3 is compact and efficient, and can quickly take away the heat generated by the slurry to maintain the stability of the slurry.

[0027] In actual application, first add silica sol to the slurry barrel 1, then start the cooler 3, and control the temperature of the slurry by adjusting the temperature of the cooling water in the spiral water pipe, usually maintained at 11-19°C. Subsequently, start the mixer and gradually increase the stirring speed as the refractory powder is added. In order to fully blend the powder and silica sol and prevent agglomeration, the first stirring wheel 22 and the second stirring wheel 23 rotate at a high speed of 200-3000RPM, while the third stirring wheel 24 rotates at a slower speed of 15-100RPM to prevent the powder from depositing on the bottom and side walls of the slurry barrel. This combined stirring method not only improves the stirring efficiency, but also effectively solves the problem of heating of the slurry during the stirring process, thereby ensuring the quality and stability of the slurry.

[0028] The above is a detailed introduction to a slurry stirring device for precision casting provided by the utility model. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present utility model and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present utility model.

Claims

1. A slurry stirring device for precision casting, comprising a slurry barrel (1), a stirring device (2) and a cooler (3), characterized in that: The stirring device (2) is arranged inside the pulp barrel (1) and stirs the material inside the pulp barrel (1) by rotating. The cooler (3) is arranged outside the pulp barrel (1). The stirring device (2) comprises a stirring shaft (21), a first stirring wheel (22), a second stirring wheel (23), a third stirring wheel (24) and a bracket (25). The first stirring wheel (22), the second stirring wheel (23) and the third stirring wheel (24) are installed on the stirring shaft (21) from top to bottom, and the stirring shaft (21) is used to achieve rotational stirring of the material. The bracket (25) is connected to the uppermost end of the stirring shaft (21) to provide support for the stirring shaft (21) and to connect a rotating motor.

2. A slurry stirring device for precision casting according to claim 1, characterized in that: The first stirring wheel (22) and the second stirring wheel (23) are wheel-shaped stirring devices, and rectangular stirring blades (26) are arranged on the periphery of the wheel and are staggered in an upper and lower manner.

3. A slurry stirring device for precision casting according to claim 2, characterized in that: The third stirring wheel (24) is composed of a stirring rod (27) in an L-shape.

4. A slurry stirring device for precision casting according to claim 3, characterized in that: The first stirring wheel (22) and the second stirring wheel (23) can rotate independently of the third stirring wheel (24), and the stirring speed of the first stirring wheel (22) and the second stirring wheel (23) is greater than that of the third stirring wheel (24).

5. A slurry stirring device for precision casting according to claim 4, characterized in that: The rotation speed of the first stirring wheel (22) and the second stirring wheel (23) is 200-3000RPM.

6. A slurry stirring device for precision casting according to claim 4, characterized in that: The rotation speed of the third stirring wheel (24) is 15-100 RPM.

7. A slurry stirring device for precision casting according to any one of claims 1 to 6, characterized in that: The cooler (3) is a water cooling device.

8. A slurry stirring device for precision casting according to claim 7, characterized in that: The cooler (3) is a spiral water pipe coiled around the outside of the pulp barrel (1), and cooling water flows through the water pipe.

9. A slurry stirring device for precision casting according to claim 7, characterized in that: The water temperature of the cooler (3) is 11-19°C.

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