Asymmetric variable-speed stirring device driven by variable-tooth-thickness non-circular gear
Through the asymmetric variable speed variable stirring device driven by a variable tooth thickness and non-circular gear, the asymmetric variable speed movement is achieved by using the driving wheel and driven wheel with the curve meshing of the deformation elliptical joint curve, which solves the problem of the mixing isolation area of the low-speed mixer and improves the material mixing effect.
Patent Information
- Application Number
- CN202421181111.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-05-28
AI Technical Summary
Existing low-speed mixers are prone to form a mixing isolation zone in the mixing container, and the material mixing effect is poor.
The asymmetric variable speed stirring device driven by a variable tooth thickness is adopted. The upper bracket and the lower bracket are driven by a large motor, and the driving wheel is driven by a small motor, and the driving wheel is engaged in a deformation elliptical joint curve to achieve asymmetric speed change movement. The agitator blade rotates uniformly around the central axis and rotates asymmetrically about its own axis.
At low speed state, destroy the periodicity of the movement trajectory of fluid particles, induce chaotic mixing, improve mixing efficiency, and improve material uniformity.
Smart Images
Figure CN223042588U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of stirring devices, and particularly relates to an asymmetric variable-speed stirring device driven by a variable tooth thickness non-circular gear. Background Art
[0002] Mechanical stirring is a common material mixing method in the fields of food processing, material processing, chemical industry, etc. A low-speed mixer is an industrial device that rotates stirring blades in a stirring barrel to fully stir materials, so as to achieve uniform mixing of materials. Low-speed stirring has low energy consumption, but there are significant defects. It is easy to form a mixing isolation zone in the stirring container, and the material mixing effect is poor. Content of the Utility Model
[0003] The purpose of the utility model is to provide an asymmetric variable-speed stirring device driven by a variable tooth thickness non-circular gear. The utility model can destroy the periodicity of the movement track of fluid particles in the low-speed state, induce chaotic mixing, improve the mixing effect, and enhance the mixing efficiency.
[0004] To achieve the above purpose, an asymmetric variable-speed stirring device driven by a variable tooth thickness non-circular gear of the utility model includes a large motor. The end of the large motor is movably connected with an upper bracket and a lower bracket that are parallel to each other and can horizontally rotate around the axis. A small motor is installed at the end of the lower bracket. The ends of the small motor and the upper bracket are respectively movably connected with a driving wheel and a driven wheel whose pitch curves are a pair of identical deformed ellipses and can output asymmetric variable-speed motion. The driving wheel and the driven wheel mesh with each other, and a stirring paddle is installed below the driven wheel.
[0005] Further, the radii of the deformed ellipse pitch curves of the driving wheel and the driven wheel are variable at different rotation angles, and are composed of two parts of curves spliced together. The rotation angle change range of the first section of the curve is 0° to 120°, and the rotation angle change range of the second section of the curve is 120° to 360°.
[0006] Further, the driving wheel and the driven wheel adopt the form of variable tooth thickness, and the tooth profile displacement coefficient linearly changes along the axis direction; the positive displacement end face of the driving wheel meshes with the negative displacement end face of the driven wheel to form a variable tooth thickness non-circular gear pair.
[0007] Further, a bearing is connected to the driven wheel, and a gasket is arranged between the driven wheel and the upper bracket and fixed tightly on the bearing through a locking nut.
[0008] Further, a motor bracket capable of fixing the entire stirring device on the stirring container is installed above the large motor.
[0009] Compared with the prior art, the utility model has the following beneficial effects:
[0010] In the present utility model, a driving wheel and a driven wheel with a pair of identical deformed ellipses as pitch curves and capable of outputting an asymmetric variable-speed motion are meshed with each other. A large motor drives the upper bracket and the lower bracket to rotate, and a small motor drives the driving wheel to rotate, driving the driven wheel to output an asymmetric variable-speed motion, so that the stirring paddle performs a uniform circular motion around the central axis of the stirring container and at the same time performs an asymmetric variable-speed self-rotation around its own axis, achieving a better material mixing effect.
[0011] Furthermore, the driving wheel and the driven wheel of the present utility model adopt a form of variable tooth thickness. The positive modified end face of the driving wheel meshes with the negative modified end face of the driven wheel, forming a variable tooth thickness non-circular gear pair. The meshing clearance between the gears is adjusted by slightly moving the axial position, making the transmission process smoother.
[0012] Furthermore, a bearing is connected to the driven wheel of the present utility model. A gasket is arranged between the driven wheel and the upper bracket and is fixed tightly on the bearing through a lock nut. When replacing gaskets with different thicknesses, the meshing clearance between the driving wheel and the driven wheel is adjusted, enabling the driven wheel to output a stable asymmetric variable-speed motion to achieve a better material mixing effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 is a schematic structural diagram of the present utility model;
[0014] Figure 2 is a schematic diagram of the deformed ellipse pitch curves of the driving wheel and the driven wheel of the present utility model;
[0015] Figure 3 is Figure 2 a schematic diagram of the first section curve forming the deformed ellipse in
[0016] Figure 4 is Figure 2 a schematic diagram of the second section curve forming the deformed ellipse in
[0017] Figure 5 is a schematic structural diagram of the variable tooth thickness non-circular gear with a deformed ellipse as the pitch curve in the present utility model;
[0018] Figure 6 is a schematic structural diagram of the variable tooth thickness non-circular gear pair;
[0019] Figure 7 is a schematic installation structural diagram of the present utility model;
[0020] In the figure: 1 - driving wheel; 2 - driven wheel; 3 - lock nut; 4 - bearing; 5 - gasket; 6 - upper bracket; 7 - small motor; 8 - lower bracket; 9 - large motor; 10 - stirring paddle; 11 - stirring container; 12 - motor bracket. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0021] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0022] As Figure 1 shown, an asymmetric variable-speed stirring device driven by a variable tooth thickness non-circular gear according to this embodiment includes a large motor 9. The end of the large motor 9 is movably connected to a parallel upper bracket 6 and a lower bracket 8. The large motor 9 drives the upper bracket 6 and the lower bracket 8 to rotate. A small motor 7 is installed at the end of the lower bracket 8. The small motor 7 is movably connected to a driving wheel 1. A driven wheel 2 is installed at the end of the upper bracket 6. The driving wheel 1 and the driven wheel 2 mesh with each other. As Figure 2 shown, the pitch curves of the driving wheel 1 and the driven wheel 2 are a pair of identical deformed ellipses. The radius vectors of the entire deformed ellipse pitch curve vary at different rotation angles and are composed of two parts of curves spliced together. As Figure 3 shown, the rotation angle change range of the first section of the curve is 0° to 120°; as Figure 4 shown, the rotation angle change range of the second section of the curve is 120° to 360°; the first section of the curve and the second section of the curve that make up the deformed ellipse have different shapes. The entire deformed ellipse is an asymmetric figure. Therefore, a non-circular gear with a deformed ellipse pitch curve can output an asymmetric variable-speed motion. The small motor 7 drives the driving wheel 1 to rotate, driving the driven wheel 2 to rotate and output an asymmetric variable-speed motion.
[0023] As Figure 5 shown, the driving wheel 1 and the driven wheel 2 of the non-circular gear adopt a variable tooth thickness form, and the tooth profile displacement coefficient linearly changes along the axial direction. During assembly, the positive displacement end face of the driving wheel 1 meshes with the negative displacement end face of the driven wheel 2 to form a variable tooth thickness non-circular gear pair. As Figure 6 shown, the meshing clearance between the gears can be adjusted by slightly moving the axial position to make the transmission process smoother.
[0024] A bearing 4 is connected to the driven wheel 2. A gasket 5 is provided between the driven wheel 2 and the upper bracket 6 and is fixed tightly on the bearing 4 through a lock nut 3. When gaskets 5 of different thicknesses are replaced according to the usage conditions, the meshing clearance between the driving wheel 1 and the driven wheel 2 can be adjusted, so that the driven wheel 2 outputs a stable asymmetric variable-speed motion to achieve a better material mixing effect.
[0025] As Figure 7 shown, a motor bracket 12 is installed above the large motor 9, which can fix the entire stirring device on the stirring container 11. A stirring paddle 10 is installed below the driven wheel 2. After the entire stirring device is powered on, the stirring paddle 10 can rotate uniformly around the central axis of the stirring container 11 and rotate asymmetrically and variably around its own axis to achieve a better material mixing effect. By changing the form of the stirring paddle 10, different material properties can be adapted.
[0026] Working principle: When using an asymmetric variable-speed stirring device driven by a variable tooth thickness non-circular gear, the entire stirring device is fixed on the stirring container 11 through the motor bracket 12, and then the power is turned on to start stirring. During the stirring process, the large motor 9 drives the upper bracket 6 and the lower bracket 8 to rotate, and the small motor 7 drives the driving wheel 1 to rotate, driving the driven wheel 2 to output an asymmetric variable-speed motion, so that the stirring paddle 10 installed below the driven wheel 2 makes a uniform revolution around the central axis of the stirring container 11, and at the same time makes an asymmetric variable-speed rotation around its own axis, achieving a better material mixing effect.
Claims
1. An asymmetric variable speed stirring device driven by a non-circular gear with variable tooth thickness, characterized in that: The invention comprises a large motor (9), the end of which is movably connected to an upper bracket (6) and a lower bracket (8) which are parallel to each other and can rotate horizontally around an axis, the end of which is installed with a small motor (7), the ends of which are movably connected to a driving wheel (1) and a driven wheel (2) whose pitch curves are a pair of identical deformed ellipses and can output asymmetric variable speed motion, respectively, the driving wheel (1) and the driven wheel (2) are meshed with each other, and a stirring paddle (10) is installed below the driven wheel (2).
2. The asymmetric variable speed stirring device driven by a variable tooth thickness non-circular gear according to claim 1, characterized in that: The deformed elliptical pitch curves of the driving wheel (1) and the driven wheel (2) have varying radial directions at different rotation angles and are formed by splicing two curve sections, wherein the rotation angle variation range of the first section of the curve is 0° to 120°, and the rotation angle variation range of the second section of the curve is 120° to 360°.
3. The asymmetric variable speed stirring device driven by a variable tooth thickness non-circular gear according to claim 1 or 2, characterized in that: The driving wheel (1) and the driven wheel (2) adopt a variable tooth thickness form, and the tooth profile displacement coefficient changes linearly along the axial direction; the positive displacement end face of the driving wheel (1) meshes with the negative displacement end face of the driven wheel (2) to form a variable tooth thickness non-circular gear pair.
4. The asymmetric variable speed stirring device driven by a variable tooth thickness non-circular gear according to claim 1, characterized in that: The driven wheel (2) is connected to a bearing (4), and a gasket (5) is provided between the driven wheel (2) and the upper bracket (6) and is fixed to the bearing (4) by a locking nut (3).
5. The asymmetric variable speed stirring device driven by a variable tooth thickness non-circular gear according to claim 1, characterized in that: A motor bracket (12) is installed above the large motor (9) and is capable of fixing the entire stirring device on the stirring container (11).