Atomization powder making rotating shaft feeding device
By adopting a triangular roller assembly and a spiral propulsion convex design in the plasma rotary atomizing equipment, the problems of rotational shaft speed and stability were solved, achieving efficient rod rotation and atomization effects and reducing equipment maintenance costs.
Patent Information
- Application Number
- CN202520464281.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-17
AI Technical Summary
Existing plasma rotary atomization equipment suffers from problems such as difficulty in increasing the rotation speed and poor stability when the rotating shaft rotates at high speed, which affects the atomization effect and production efficiency, and also results in high equipment maintenance costs.
The bar stock is held by three roller sets arranged in a triangular pattern. Two drive motors drive the roller sets to rotate in opposite directions. Combined with spiral propulsion ridges and wear-resistant coating, the bar stock can be rotated at high speed and stably. The roller sets are directly mounted on the roller shaft, reducing cooling and stress issues.
It achieves high-speed rotation of bar stock at speeds exceeding 40,000 rpm, maintains good rotational stability, improves atomization effect and production efficiency, and reduces equipment maintenance costs.
Smart Images
Figure CN223862869U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to plasma rotating atomization equipment, concretely relates to a kind of atomization powder spinning shaft feeding device. BACKGROUND
[0002] In modern industrial production, plasma rotating atomization technology is concerned because it can produce high-quality, high-performance metal powder. However, in the practical application of plasma rotating atomization equipment, the performance of its rotating shaft has many problems. Because the existing bar is designed to be directly connected to the rotating shaft of the driving motor, it often cannot meet the requirements of high-speed rotation, and the speed is difficult to improve to the ideal level, usually in the lower speed range. Bottleneck is encountered. At the same time, the stability of the speed is difficult to guarantee, which will lead to uneven atomization effect and affect product quality.
[0003] The reasons for this situation are many. First, the traditional bar has no support structure, which is not reasonable, causing the longer bar to shake and deviate during high-speed rotation, and also unable to effectively disperse stress and heat during rotation, thereby limiting the increase of rotation speed. Second, the design of the driving system is not optimized, and the power transmission efficiency is low, which makes it difficult to provide enough torque to push the bar to a higher speed. In addition, the manufacturing process and material selection of the bar are also insufficient, which cannot withstand the huge centrifugal force and friction force brought by high-speed rotation, and is prone to wear, deformation and even breakage. These problems not only affect production efficiency, but also increase equipment maintenance cost and downtime, causing great economic losses to enterprises.
[0004] Therefore, due to the difficulty of dynamic balance and the complexity of the structure, the rotation speed of the current rotating plasma atomization powder production equipment has been maintained below 20000 rpm, without breakthrough in higher speed. INVENTION CONTENTS
[0005] The technical problem to be solved by the utility model is to provide an atomization powder spinning shaft feeding device that can effectively improve the rotation speed and its stability.
[0006] To solve the above technical problems, the utility model adopts the following technical solutions:
[0007] An atomization powder spinning shaft feeding device, comprising three roller groups arranged in a triangular shape and clamping the bar, three roller shafts for passing through each roller group, two driving motors connected to the lower two roller shafts, each roller group has several rollers arranged at the front section of the roller shaft and several rollers arranged at the middle and rear section of the roller shaft, each roller has a spiral propelling ridge on the wheel surface, the contact surface of the propelling ridge is a circular arc surface, and the distance between the several rollers arranged at the front section of the roller shaft is smaller than the distance between the several rollers arranged at the middle and rear section of the roller shaft.
[0008] It also includes a support base and an upper cover plate located above the support base and hinged to the support base on one side. The two lower roller shafts are fixed to the support base by bearings, and the upper roller shaft is fixed to the upper cover plate by bearings.
[0009] The roller surface is also provided with a wear-resistant coating.
[0010] The spacing between the rollers located at the front end of the roller shaft ranges from 5 to 20 mm.
[0011] The spacing between the rollers located in the middle and rear section of the roller shaft ranges from 15 to 55 mm.
[0012] The drive motor is connected to the corresponding roller shaft via a coupling.
[0013] This invention discloses a rotary shaft feeding device for atomizing powder production. It employs three roller groups arranged in a triangular pattern to clamp the bar stock. Two high-speed, counter-rotating drive motors rotate the two lower roller groups in opposite directions and the upper roller group in a driven manner, thus driving the middle bar stock to rotate at high speed and propel it into the atomization chamber. Several small-pitch rollers at the front of the roller shaft clamp and rotate the bar stock at high speed, while several large-pitch rollers at the middle and rear support, balance, and propel the bar stock, reducing swaying and offset caused by high-speed rotation. Furthermore, the roller groups are directly mounted on the roller shaft, eliminating the need for bearings and other accessories, thus reducing the need to consider cooling and stress issues. Attached Figure Description
[0014] The utility model will now be described in detail with reference to the accompanying drawings and specific embodiments:
[0015] Figure 1 This is a three-dimensional schematic diagram of the atomizing powder rotary shaft feeding device of this utility model;
[0016] Figure 2 This is an axial view of the atomizing powder-making rotary shaft feeding device of this utility model.
[0017] Figure 3 This is a cross-sectional view of the atomizing powder rotary shaft feeding device of this utility model.
[0018] Figure 4 This is another cross-sectional view of the atomizing powder rotary shaft feeding device of this utility model.
[0019] Figure 5 This is a schematic diagram of the height adjustment structure of the feeding device of this utility model. Detailed Implementation
[0020] This utility model provides a rotary shaft feeding device for atomizing powder production, such as...Figures 1-4 As shown, the device includes three roller groups arranged in a triangular pattern and radially clamping the bar stock 7 (at 120° angles to each other), three roller shafts 1 for passing through each roller group, and two drive motors 5 arranged side-by-side and correspondingly connected to the two lower roller shafts 1. Each roller group has several rollers 8 located at the front section of the roller shaft 1 and several rollers 8 located at the middle and rear section of the roller shaft 1. Each roller 8 has helical propulsion grooves 2 on its surface (which can be machined), and the contact surface of the propulsion grooves 2 is an arc surface, i.e., point contact with the bar stock 7. Furthermore, the spacing between the rollers 8 located at the front section of the roller shaft 1 is much smaller than the spacing between the rollers 8 located at the middle and rear section of the roller shaft 1. Figure 1 As shown, there are three rollers 8 at the front of the roller shaft 1. Based on the diameter and length of the bar stock, generally for bars with a diameter of 30-70mm, the spacing between them is designed to be 5-20mm. Their main function is to clamp the bar stock 7 and drive it to rotate at high speed. There are four rollers 8 at the rear of the roller shaft 1. Based on the diameter and length of the bar stock, generally for bars with a diameter of 30-70mm, the spacing between them is designed to be 15-55mm. Their main function is to support and balance the bar stock 7 and propel it forward. Of course, the number and spacing of the rollers 8 can be adjusted accordingly based on the different diameter and length specifications of the bar stock 7.
[0021] The feeding device also includes a support base 4 and an upper cover plate 3 located above the support base 4 and hinged to the support base 4 on one side. Two lower roller shafts 1 are fixed to the support base 4 via bearings 10, while one upper roller shaft 1 is fixed to the upper cover plate 3 via a bearing 10. The opening and closing of the upper cover plate 3 facilitates the loading of bar stock 7 and presses the upper roller assembly onto the bar stock 7. Furthermore, the upper cover plate 3 can be height-adjusted via a structure (such as...). Figure 5 The height is adjusted by combining a vertical waist-shaped hole 9 with a hinge 11 to accommodate bars 7 of different diameters.
[0022] The roller 8 is also provided with a wear-resistant coating such as polytetrafluoroethylene on its surface (including the spiral propulsion ridge 2) to reduce frictional wear with the bar stock 7.
[0023] The motor shaft of the aforementioned drive motor 5 is connected to the corresponding roller shaft 1 via a coupling.
[0024] During installation and commissioning, high-precision measuring instruments can be used to ensure the positional accuracy of the three roller sets and the uniform distribution of contact pressure with the bar stock 7. Precise adjustments ensure the entire system maintains stable operation even at high speeds.
[0025] When the feeding device of this invention is running, the drive motor 5 transmits power to the bar stock 7 through the roller shaft 1 and the roller assembly. The bar stock 7 rotates at high speed under the clamping of the three roller assemblies. Due to the uniform distribution and stable support of the rollers 8, the bar stock 7 can smoothly reach a speed of over 40,000 rpm and maintain good speed stability.
[0026] However, those skilled in the art should recognize that the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Any changes or modifications to the above embodiments within the scope of the essential spirit of the present utility model will fall within the scope of the claims of the present utility model.
Claims
1. A rotary shaft feeding device for atomizing powder production, characterized in that: It includes three roller sets arranged in a triangular pattern to clamp the bar stock, three roller shafts for passing through each roller set, and two drive motors connected to the two roller shafts at the bottom. Each roller set has several rollers at the front section of the roller shaft and several rollers at the middle and rear section of the roller shaft. Each roller has a spiral propulsion ridge on its surface. The contact surface of the propulsion ridge is an arc surface. The distance between the rollers at the front section of the roller shaft is smaller than the distance between the rollers at the middle and rear section of the roller shaft.
2. The atomizing powder rotary shaft feeding device according to claim 1, characterized in that: It also includes a support base and an upper cover plate located above the support base and hinged to the support base on one side. The two lower roller shafts are fixed to the support base by bearings, and the upper roller shaft is fixed to the upper cover plate by bearings.
3. The atomizing powder rotary shaft feeding device according to claim 1, characterized in that: The roller surface is also provided with a wear-resistant coating.
4. The atomizing powder rotary shaft feeding device according to claim 1, characterized in that: The spacing between the rollers located at the front end of the roller shaft ranges from 5 to 20 mm.
5. The atomizing powder rotary shaft feeding device according to claim 1, characterized in that: The spacing between the rollers located in the middle and rear section of the roller shaft ranges from 15 to 55 mm.
6. The atomizing powder rotary shaft feeding device according to claim 1, characterized in that: The drive motor is connected to the corresponding roller shaft via a coupling.