A cyclone mixer

Abstract

A cyclone type mixer comprises a motor, a stirring shaft, a connecting shaft, a damping assembly, a paddle, a mounting sleeve and a speed reducer, the output end of the motor is connected with the speed reducer, the output end of the speed reducer is connected with one end of the connecting shaft, the other end of the connecting shaft is connected with one end of the stirring shaft, the other end of the stirring shaft is connected with the mounting sleeve in interference fit, the paddle is connected with the mounting sleeve, the damping assembly comprises a bearing cover, a bearing seat, a bearing, a sealing ring, an oil injection cup and an elastic retainer, the bearing seat is connected with the speed reducer and the bearing cover respectively, the inside of the bearing seat is a through hole structure, and there are a bearing chamber and a lubricating chamber in the inside, the damping assembly reduces the effective arm of the stirring shaft, so that the maximum deflection of the stirring shaft is reduced, thereby reducing the amplitude of the stirring shaft, reducing the noise generated by vibration, reducing the impact friction between parts, prolonging the service life of the equipment, and the stable rotation state of the stirring shaft can also improve the uniformity of the material flow stirring.

Description

Technical Field

[0001] This utility model belongs to the field of mixer technology, specifically relating to a vortex mixer. Background Technology

[0002] The paddle mixer disclosed in reference application number CN202420886578.0 is an easy-to-operate paddle mixer, including a motor, a rotating shaft fixedly connected to the end of the motor shaft, and a bracket fixedly connected to the top of the rotating shaft. The bracket has four equally spaced stirring blades, which are rotatably connected to the bracket via the rotating shaft. In this invention, when the motor is working, it drives the bracket and stirring blades to rotate via the rotating shaft. The stirring blades then stir the materials. When stirring different materials, a knob drives a rotating rod and a second reversing gear to rotate. The second reversing gear meshes with the first reversing gear, causing the four stirring blades to rotate in the same direction. This allows for adjustment of the tilt angle of the stirring blades according to the type of material, facilitating the stirring of different types of materials and effectively improving the practicality of the paddle mixer.

[0003] However, the rotating shaft of this technical solution is directly connected to the motor, which means that the rotating shaft is fixed at a single point on the motor shaft end, while the other end is completely suspended, forming a cantilever beam structure. During stirring, the resistance of the material to the blades will generate lateral force and torque, causing significant bending deformation at the free end of the rotating shaft. This will cause the mixer to vibrate during operation, leading to unstable equipment operation. Utility Model Content

[0004] In order to overcome at least some of the shortcomings of the prior art, the present invention provides a vortex mixer.

[0005] The technical solution provided by this utility model is as follows: A cyclone mixer includes a motor, a stirring shaft, a connecting shaft, a vibration damping assembly, impellers, a mounting sleeve, and a reducer. The output end of the motor is connected to the reducer, and the output end of the reducer is connected to one end of the connecting shaft. The other end of the connecting shaft is connected to one end of the stirring shaft. The stirring shaft passes through the vibration damping assembly, and the other end of the stirring shaft is interference-fitted with the mounting sleeve. A plurality of impellers are connected to the mounting sleeve. The vibration damping assembly includes a bearing cover, a bearing housing, a bearing, a sealing ring, an oil injection cup, and an elastic retaining ring. One end of the bearing housing is the motor surface, and the other end is the mixer surface. The bearing housing and the reducer are connected on the motor surface, and the bearing housing and the bearing cover are... The mixer surface is connected, the bearing housing has an internal through-hole structure and an external frustum shape. The outer diameter of the bearing housing narrows from the mixer surface to the motor surface. The inner wall of the bearing housing has a partition plate with a central opening. The partition plate, the bearing cover, and the bearing housing wall form a bearing chamber. The partition plate, the reducer, and the inner wall of the bearing housing form a lubrication chamber. The bearing is mounted on the outer wall of the bearing chamber on the mixing shaft. One end of the bearing abuts against the bearing cover, and the other end abuts against the elastic retaining ring. The outer wall of the bearing housing has holes for installing the oil injection cup in one section of the bearing chamber and one section of the lubrication chamber. The sealing ring is installed inside the bearing cover.

[0006] Furthermore, the blade is provided with a blade arm fixing plate, a stiffener, a blade arm, blades, and a blade frame. The blade arm fixing plate is connected to the blade arm. A stiffener is connected to the side of the blade arm. The stiffener is connected to the blade arm fixing plate. The blades are connected to the blade arm. Several blade frames are vertically connected to the blade arm. The blade frames are located inside the blade.

[0007] Furthermore, the blade has a root, a tip, and a surface. The blade gradually narrows and thins from the root to the tip, and the surface is a twisted airfoil.

[0008] Furthermore, the bearing is an open double-row self-aligning roller bearing.

[0009] Furthermore, the connecting shaft is flexible.

[0010] Furthermore, the sealing ring is a skeleton-type sealing ring.

[0011] The beneficial effects of this utility model are: a vibration damping component is installed between the motor and the stirring shaft. The vibration damping component reduces the effective lever arm of the stirring shaft, thereby reducing the maximum deflection that the stirring shaft can achieve, thus reducing the amplitude of the stirring shaft. This not only reduces the noise caused by vibration, but also reduces the impact friction between components, extending the service life of the equipment. The stable rotation state of the stirring shaft can also improve the uniformity of material mixing. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the cyclone mixer in this embodiment;

[0013] Figure 2 This is a schematic diagram of the vibration damping component in this embodiment;

[0014] Figure 3 This is a schematic diagram of the blade frame in this embodiment;

[0015] Figure 4 This is a front view of the blade in this embodiment;

[0016] Figure 5 This is an external view of the propeller blade in this embodiment;

[0017] Figure 6 This is a schematic diagram of the propeller blades in this embodiment. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0019] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0020] See Figures 1 to 6A cyclone mixer includes a motor 1, a stirring shaft 2, a connecting shaft 3, a vibration damping component 4, impellers 5, a mounting sleeve 6, and a reducer 7. The output end of the motor 1 is connected to the reducer 7, and the output end of the reducer 7 is connected to the connecting shaft 3. The stirring shaft 2 is connected to the connecting shaft 3 and passes through the vibration damping component 4. One end of the stirring shaft 2 is interference-fitted with the mounting sleeve 6. Several impellers 5 are bolted to the mounting sleeve 6. The structural design of the cyclone mixer is a cantilever beam model. The swaying is mainly caused by the low bending stiffness of the shaft. The lower the bending stiffness of the shaft, the higher the maximum deflection of the shaft. Excessive maximum deflection will cause the shaft to vibrate violently during operation. The function of the vibration damping component 4 is to act as a support point to change the stirring shaft 2 from a cantilever beam to a continuous beam. The effective length of the force is reduced, which can reduce the maximum deflection of the stirring shaft 2 and reduce the vibration degree of the stirring shaft 2, thereby reducing the impact of the vibration of the stirring shaft 2 on the operation of the cyclone mixer.

[0021] In this embodiment, the connecting shaft 3 adopts a hollow shaft design, with one end connected to the output end of the reducer 7 and the other end connected to one end of the stirring shaft 2. This structural design enables the reducer 7 to have overload protection. The connection between the connecting shaft 3 and the stirring shaft 2 is designed as a weak link. In the event of overload or jamming of the stirring shaft 2, the connection will break first, preventing damage to the reducer 7 and reducing subsequent maintenance costs.

[0022] In this embodiment, the vibration damping component 4 includes a bearing cover 41, a bearing seat 42, a bearing 43, a sealing ring 44, an oil injection cup 45, and an elastic retaining ring 46. One end of the bearing seat 42 is a motor surface 421, and the other end is a mixer surface 422. The bearing seat 42 and the reducer 7 are bolted together on the motor surface 421, and the bearing seat 42 and the bearing cover 41 are bolted together on the mixer surface 422. The bearing seat 42 has a through-hole structure inside, allowing the stirring shaft 2 to pass through the vibration damping component 4. The outer shape is frustum-shaped, and the outer diameter of the bearing seat 42 gradually narrows from the mixer surface 422 to the motor surface 421. The inner wall of the bearing seat 42 is provided with a partition plate 423 with a central opening. The partition plate 423, the bearing cover 41, and the wall of the bearing seat 42 form a bearing chamber 47. The partition plate 423, the reducer 7, and the bearing cover 42 are connected together. The inner wall of the bearing housing 42 forms a lubrication chamber 48. The bearing 43 is mounted on the outer wall of the bearing chamber 47 of the stirring shaft 2. One end of the bearing 43 abuts against the bearing cover 41, and the other end abuts against the elastic retaining ring 46. The elastic retaining ring 46 and the bearing cover 41 cooperate to restrict the axial displacement of the bearing 43 on the stirring shaft 2. The outer wall of the bearing housing 42 has holes for the installation of the oil injection cup 45 in one section of the bearing chamber 47 and one section of the lubrication chamber 48. The oil injection cup 45 provides a lubricating oil injection point for the bearing chamber 47 and the lubrication chamber 48, and is used to periodically inject lubricating oil so that the stirring shaft 2 and the bearing 43 can be immersed in lubricating oil during operation to ensure their working efficiency. The sealing ring 44 is installed in the bearing cover 41. The sealing ring 44 can prevent the lubricating oil in the bearing chamber 47 from flowing out and causing oil contamination.

[0023] In this embodiment, the blade 5 is provided with a blade arm fixing plate 51, a stiffener 52, a blade arm 53, a blade 54, and a blade frame 55. The blade arm fixing plate 51 is connected to the blade arm 53. The blade arm 53 is provided with a stiffener 52 on its side to enhance the bending strength of the blade arm 53. The other end of the stiffener 52 is connected to the blade arm fixing plate 51. The blade 54 is connected to the blade arm 53. Several blade frames 55 are vertically connected to the blade arm 53. The blade frames 55 are located inside the blade 5. If a solid structure design is adopted, the weight of the blade 5 will increase. Only materials with low density can be selected to avoid the blade 5 from being too heavy. Low-density metal materials are expensive, and low-density non-metallic materials have low strength. The frame structure formed by the blade frames 55 and the blade arms 53 can enhance the overall structural strength and stability through reasonable stress distribution, so that low-cost but high-density metal materials can be selected, thereby reducing the production cost of the blade 5.

[0024] Preferably, the bearing 43 is an open double-row self-aligning roller bearing. Even if there is a slight deviation in the base support, the bearing can still self-adjust to ensure uniform load distribution. The double-row rollers can provide double the radial load capacity, which can significantly suppress the radial displacement of the stirring shaft 2 under the centrifugal force of the impeller 5.

[0025] Preferably, the blade 54 adopts a propeller-type stirring structure, which consists of 2 to 3 propeller blades. Therefore, the shape of the blade 54 is a twisted airfoil. The blade 54 has a root 541, a tip 542, and a surface 543. The surface 543 gradually narrows and thins from the root 541 to the tip 542. The surface 543 is twisted in a spiral shape. The root 541 has a wide and thick cross section to withstand torque, while the tip 542 is thin and sharp to reduce resistance. The surface 543 has an airfoil-like arched profile, with a flat lower surface and a raised upper surface. It can generate radial flow through high-speed rotation, enhance turbulence, and stir high-viscosity fluids.

[0026] Preferably, the connecting shaft 3 itself is flexible. The motor 1 will inevitably generate vibration during operation. The vibration generated by the motor 1 will be transmitted to the connecting shaft 3 through the reducer 7. The connecting shaft 3 will transmit the vibration to the blade 5 through the stirring shaft 2. Since the blade 5 is sensitive to the vibration of the stirring shaft 2, the flexible connecting shaft 3 can act as a vibration isolator to reduce the impact of the vibration generated by the motor 1 on the blade 5.

[0027] Preferably, the sealing ring 44 is a skeleton-type sealing ring, which does not require a complex built-in spring, making it easy to install and cost-effective.

[0028] The above description is only a preferred embodiment of the present utility model. Any technical solution that achieves the purpose of the present utility model by essentially the same means shall fall within the protection scope of the present utility model.

Claims

1. A cyclone mixer, characterized in that: The device includes a motor (1), a stirring shaft (2), a connecting shaft (3), a vibration damping assembly (4), impellers (5), a mounting sleeve (6), and a reducer (7). The output end of the motor (1) is connected to the reducer (7), and the output end of the reducer (7) is connected to one end of the connecting shaft (3). The other end of the connecting shaft (3) is connected to one end of the stirring shaft (2). The stirring shaft (2) passes through the vibration damping assembly (4), and the other end of the stirring shaft (2) is press-fitted with the mounting sleeve (6). The mounting sleeve (6) is connected to several blades (5). The damping assembly (4) includes a bearing cover (41), a bearing seat (42), a bearing (43), a sealing ring (44), an oil injection cup (45), and an elastic retaining ring (46). One end of the bearing seat (42) is the motor surface (421), and the other end is the mixer surface (422). The bearing seat (42) and the reducer (7) are connected on the motor surface (421). The bearing seat (42) and the bearing cover (41) are in the... The mixer surface (422) is connected, the bearing seat (42) has a through hole structure inside and a frustum shape outside. The outer diameter of the bearing seat (42) narrows from the mixer surface (422) to the motor surface (421). The inner wall of the bearing seat (42) is provided with a partition plate (423) with a central opening. The partition plate (423), the bearing cover (41) and the wall of the bearing seat (42) form a bearing chamber (47). The partition plate (423), the reducer (7) and the bearing seat The inner wall of (42) forms a lubrication chamber (48). The bearing (43) is installed on the outer wall of the bearing chamber (47) of the stirring shaft (2). One end of the bearing (43) abuts against the bearing cover (41), and the other end abuts against the elastic retaining ring (46). The outer wall of the bearing seat (42) is provided with holes for the installation of the pressure injection cup (45) in a section of the bearing chamber (47) and a section of the lubrication chamber (48). The sealing ring (44) is installed inside the bearing cover (41).

2. The cyclone mixer according to claim 1, characterized in that: The blade (5) is provided with a blade arm fixing plate (51), a stiffener plate (52), a blade arm (53), a blade (54), and a blade frame (55). The blade arm fixing plate (51) is connected to the blade arm (53). The blade arm (53) is connected to the side of the stiffener plate (52). The stiffener plate (52) is connected to the blade arm fixing plate (51). The blade (54) is connected to the blade arm (53). Several blade frames (55) are vertically connected to the blade arm (53). The blade frames (55) are located inside the blade (5).

3. A cyclone mixer according to claim 2, characterized in that: The blade (54) is provided with a blade root (541), a blade tip (542) and a blade surface (543). The blade (54) gradually narrows and thins from the blade root (541) to the blade tip (542), and the blade surface (543) is a twisted airfoil surface.

4. A cyclone mixer according to claim 1, characterized in that: The bearing (43) is an open double-row self-aligning roller bearing.

5. A cyclone mixer according to claim 1, characterized in that: The connecting shaft (3) is flexible.

6. A cyclone mixer according to claim 1, characterized in that: The sealing ring (44) is a skeleton-type sealing ring.

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