Efficient axial flow type stirrer

Abstract

The utility model belongs to the field of stirrers, and particularly relates to a high-efficiency axial flow type stirrer which comprises a shaft sleeve, a plurality of paddles are arranged on the peripheral wall of the shaft sleeve in an annular array mode, one end of each paddle is provided with a paddle root connected with the shaft sleeve, and the other end of each paddle is provided with a paddle tail end far away from the shaft sleeve. The included angle between the paddle and the horizontal line is gradually reduced from the root of the paddle to the tail end of the paddle; the included angle between the paddle and the horizontal line is designed to be gradually changed, the included angle between the paddle and the horizontal line is gradually reduced from the root of the paddle to the tail end of the paddle, local fluid stress is actively regulated and controlled, the speed gradient is reduced, axial and radial flow is balanced, power consumption can be reduced, the paddle is designed to be of a gradually-widened structure, the projection area of the paddle can be effectively increased, and power consumption is reduced. And in biological fermentation, gas rising is more favorably prevented, the gas holdup of the stirrer is increased, meanwhile, the discharge flow of the stirrer is increased, the mixing effect is better, the power consumption is lower, and the energy-saving effect is better.

Description

Technical Field

[0001] This utility model belongs to the field of agitator technology, specifically relating to a high-efficiency axial flow agitator. Background Technology

[0002] An axial flow agitator is a type of agitator that includes an impeller composed of blades. In agitation systems, axial flow agitators are widely used in various processes such as mixing, heat transfer, and reaction.

[0003] Currently, existing axial flow agitators generally include a shaft sleeve and multiple blades set on the outer periphery of the shaft sleeve. There are many types of blades, such as straight plate type, arc type, fan type, etc. At the same time, in most cases, the angle is fixed (such as the angle between the blade and the horizontal surface, which is 45 degrees at the root of the blade and 45 degrees at the tip of the blade). When the blade angle is fixed and the blade width is constant, the discharge velocity of the blade is gradient (the fluid velocity is non-uniform in the radial or axial direction), which is larger on the outside and smaller on the inside. This results in low mixing efficiency, high power consumption, and unsatisfactory energy saving effect. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide a high-efficiency axial flow stirrer with low power consumption.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a high-efficiency axial flow mixer, including a bushing, wherein multiple blades are arranged in a ring array on the outer peripheral wall of the bushing, one end of each blade has a blade root connected to the bushing, and the other end of each blade has a blade tip away from the bushing, and the angle between the blade and the horizontal line gradually decreases from the blade root to the blade tip.

[0006] In some embodiments, the width of the blade gradually increases from the root of the blade to the tip of the blade.

[0007] In some embodiments, an arc-shaped transition section is provided between the blade root and the blade tip.

[0008] In some embodiments, the angle α between the blade root and the horizontal line is 30° to 45°, and the angle β between the blade tip and the horizontal line is 5° to 20°.

[0009] In some embodiments, both ends of the blade are rounded.

[0010] In some embodiments, the bushing is provided with a plurality of fasteners that are connected to a plurality of blades, and one end of each fastener is provided with a plurality of fasteners that are connected to the root of the blade.

[0011] In some embodiments, the other end of the fastener has a contact arc surface connected to the outer peripheral wall of the bushing.

[0012] In some embodiments, the fastener is provided with reinforcing ribs that are connected to the outer peripheral wall of the bushing.

[0013] In some embodiments, the plurality of fasteners are respectively disposed on both sides of the reinforcing rib.

[0014] In some embodiments, the number of blades is four.

[0015] The beneficial effects of this utility model are as follows: The angle between the blade and the horizontal line is designed with a gradual angle, which gradually decreases from the root of the blade to the tip of the blade. This actively regulates the local fluid force, reduces the velocity gradient, and balances the axial and radial flow, which helps to reduce power consumption. In addition, the blade adopts a gradually widening structure design, which can effectively increase the projected area of ​​the blade. In biological fermentation, this is more conducive to preventing the rise of gas, increasing the gas holding rate of the stirrer, and increasing the discharge flow of the stirrer. This results in better mixing, lower power consumption, and better energy saving. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0017] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0018] Figure 2 This is a top view of an embodiment of the present utility model;

[0019] Figure 3 This is a front view of an embodiment of the present utility model;

[0020] Figure 4 This is a front view of the blade in an embodiment of the present invention. Detailed Implementation

[0021] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0023] The directional and positional terms used in this utility model, such as up, down, front, back, left, right, inside, outside, top, bottom, side, etc., are only for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0024] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments:

[0025] like Figure 1-4 As shown, a high-efficiency axial flow mixer includes a bushing 1. Multiple blades 2 are arranged in a ring array on the outer peripheral wall of the bushing 1. One end of each blade 2 has a root 21 connected to the bushing 1, and the other end has a tip 22 away from the bushing 1. The angle between the blade 2 and the horizontal line gradually decreases from the root 21 to the tip 22. This gradual angle design actively regulates the local fluid force, reduces velocity gradients, balances axial and radial flow, and helps reduce power consumption. The width of the blades 2 gradually increases from the root 21 to the tip 22. This gradually widening blade design effectively increases the projected area of ​​the blades, which is more effective in preventing gas rise during bio-fermentation, increasing the gas holding capacity of the mixer, and simultaneously increasing the discharge flow rate, resulting in better mixing, lower power consumption, and better energy saving. A curved transition section 23 connects the blade root 21 and the blade tip 22. The angle between the blade and the horizontal line adopts a gradually changing angle structure design, which is simple to manufacture, low in cost, and can achieve the purpose of controlling the velocity gradient, improving the uniformity of the flow field, and helping to reduce power consumption. The angle α between the blade root and the horizontal line ranges from 30° to 45°, and the angle β between the blade tip and the horizontal line ranges from 5° to 20°. Figure 4 As shown, the angle α between the blade root 21 and the horizontal line is 35°, and the angle β between the blade tip 22 and the horizontal line is 6°. The larger angle design at the blade root enhances axial thrust and compensates for the flow energy in the low-speed region; the smaller angle design at the blade tip reduces centrifugal effect and suppresses the formation of the high-speed region, thereby achieving the purpose of balancing the radial velocity gradient.

[0026] like Figure 1 and 2As shown, both sides of the blade tip 22 are rounded. The rounded corner design of the blades helps reduce fluid resistance and eddy current losses, thus reducing energy consumption. There are four blades 2. This four-blade design provides better symmetry, more even force distribution, and reduced shaft vibration, which helps extend the service life of the agitator. It also provides a wider mixing coverage, reduces flow blind spots, and results in more stable flow.

[0027] like Figure 1 , 2 As shown in Figure 3, the bushing 1 is provided with multiple fasteners 3 that are connected to multiple blades 2. One end of each fastener 3 is provided with multiple fasteners 4 that are connected to the root 21 of the blades. The bushing is connected to the multiple blades through multiple fasteners, facilitating assembly and improving assembly efficiency. The other end of the fastener 3 has a contact arc surface 31 connected to the outer peripheral wall of the bushing 1. The fasteners are connected to the outer peripheral wall of the bushing through the contact arc surface, ensuring a more secure connection between the fastener and the bushing. The fastener 3 is provided with reinforcing ribs 32 that are connected to the outer peripheral wall of the bushing 1. The reinforcing ribs enhance the overall strength of the fasteners and ensure a more secure connection between the fasteners and the bushing. Multiple fasteners 4 are respectively provided on both sides of the reinforcing rib 32. Distributing multiple fasteners on both sides of the reinforcing rib ensures a more secure connection between the fastener and the blades.

[0028] The above description is only one embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model; the scope of protection of the present utility model is defined by the claims in the claims, and all equivalent changes and modifications made in accordance with the utility model are within the scope of protection of the present utility model patent.

Claims

1. A high-efficiency axial flow agitator, characterized in that: Includes a bushing, on which multiple blades are arranged in a ring array on the outer peripheral wall of the bushing. One end of each blade has a blade root connected to the bushing, and the other end of each blade has a blade tip away from the bushing. The angle between the blade and the horizontal line gradually decreases from the blade root to the blade tip.

2. The high-efficiency axial flow stirrer according to claim 1, characterized in that: The width of the blade gradually increases from the root of the blade to the tip of the blade.

3. The high-efficiency axial flow stirrer according to claim 2, characterized in that: The blade root and blade tip are connected by an arc-shaped transition section.

4. The high-efficiency axial flow stirrer according to claim 1 or 2, characterized in that: The angle α between the root of the blade and the horizontal line is 30° to 45°, and the angle β between the tip of the blade and the horizontal line is 5° to 20°.

5. The high-efficiency axial flow stirrer according to claim 1 or 2, characterized in that: Both ends of the blades are rounded.

6. The high-efficiency axial flow stirrer according to claim 1 or 2, characterized in that: The bushing is provided with multiple fixing parts that are connected to multiple blades, and one end of each fixing part is provided with multiple fasteners that are connected to the root of the blade.

7. The high-efficiency axial flow stirrer according to claim 6, characterized in that: The other end of the fastener has a contact arc surface that connects to the outer peripheral wall of the bushing.

8. The high-efficiency axial flow stirrer according to claim 7, characterized in that: The fastener is provided with reinforcing ribs that are connected to the outer peripheral wall of the bushing.

9. The high-efficiency axial flow stirrer according to claim 8, characterized in that: The aforementioned fasteners are respectively installed on both sides of the reinforcing rib.

10. The high-efficiency axial flow stirrer according to claim 1 or 2, characterized in that: The number of blades is four.

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