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CN-224221135-U - Efficient axial flow stirrer

CN224221135UCN 224221135 UCN224221135 UCN 224221135UCN-224221135-U

Abstract

The utility model belongs to the field of stirrers, and particularly relates to a high-efficiency axial-flow stirrer, which comprises a shaft sleeve, wherein a plurality of paddles are arranged on the peripheral wall of the shaft sleeve in an annular array, one end of each paddle is provided with a paddle root connected with the shaft sleeve, the other end of each paddle is provided with a paddle tail end far away from the shaft sleeve, the included angle between each paddle and a horizontal line is gradually reduced from the paddle root to the paddle tail end, the included angle between each paddle and the horizontal line adopts a gradual-change angle design, the included angle between each paddle and the horizontal line is gradually reduced from the paddle root to the paddle tail end, the local fluid stress is actively regulated and controlled, the speed gradient is reduced, the axial flow and the radial flow are balanced, the power consumption is favorably reduced, the projected area of each paddle can be effectively increased, the rising of gas is more favorably prevented in biological fermentation, the gas holding rate of the stirrer is increased, 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.

Inventors

  • SU TIANWU
  • WU WEIPING
  • TU XIAOMIN
  • YE YUANZHOU

Assignees

  • 浙江江南搅拌设备有限公司

Dates

Publication Date
20260512
Application Date
20250530

Claims (10)

  1. 1. A high-efficiency axial-flow stirrer is characterized by comprising a shaft sleeve, wherein a plurality of paddles are arranged on the peripheral wall of the shaft sleeve in an annular array, one end of each paddle is provided with a paddle root connected with the shaft sleeve, the other end of each paddle is provided with a paddle tail end far away from the shaft sleeve, and the included angle between each paddle and a horizontal line is gradually reduced from the paddle root to the paddle tail end.
  2. 2. The efficient axial-flow stirrer according to claim 1, wherein the width of the blades increases gradually from the root of the blades to the tip of the blades.
  3. 3. The efficient axial-flow stirrer according to claim 2, wherein a cambered surface transition part is connected between the blade root and the blade tail end in a transition manner.
  4. 4. The efficient axial-flow stirrer according to claim 1 or 2, wherein the angle alpha between the root of the blade and the horizontal line is 30-45 degrees, and the angle beta between the tail end of the blade and the horizontal line is 5-20 degrees.
  5. 5. The efficient axial-flow stirrer according to claim 1 or 2, wherein both sides of the blade ends are rounded.
  6. 6. The efficient axial-flow stirrer according to claim 1 or 2, wherein a plurality of fixing members connected with a plurality of blades are respectively arranged on the shaft sleeve, and a plurality of fasteners connected with the root parts of the blades are arranged on one end of the fixing members.
  7. 7. The efficient axial-flow stirrer according to claim 6, wherein the other end of the fixing member is provided with a contact cambered surface connected to the outer peripheral wall of the shaft sleeve.
  8. 8. The efficient axial-flow stirrer according to claim 7, wherein the fixing member is provided with reinforcing ribs connected with the outer peripheral wall of the shaft sleeve.
  9. 9. The efficient axial-flow stirrer according to claim 8, wherein the plurality of fasteners are respectively arranged at two sides of the reinforcing rib.
  10. 10. The efficient axial-flow stirrer according to claim 1 or 2, wherein the number of the blades is 4.

Description

Efficient axial flow stirrer Technical Field The utility model belongs to the technical field of stirrers, and particularly relates to a high-efficiency axial-flow stirrer. Background The axial flow stirrer is one kind of stirrer comprising impeller with blades, and is used widely in stirring system in mixing, heat transfer, reaction and other technological requirements. At present, the existing axial-flow stirrer generally comprises a shaft sleeve and a plurality of paddles arranged on the periphery of the shaft sleeve, the paddles are more in types, such as straight plates, arc forms, fan shapes and the like, most of conditions are fixed in angles (such as an included angle between the paddles and the horizontal surface, the root of each paddle is 45 degrees, the tail end of each paddle is 45 degrees), when the width of each paddle is fixed by the included angle, the discharge speed of each paddle is gradient (the fluid speed is uneven in the radial or axial direction), the outside is large, the inside is small, the mixing efficiency is low, the power consumption is large, and the energy-saving effect is unsatisfactory. Disclosure of Invention The utility model aims to overcome the defects and shortcomings of the prior art and provides a high-efficiency axial flow stirrer with low power consumption. The efficient axial flow stirrer comprises a shaft sleeve, wherein a plurality of paddles are arranged on the peripheral wall of the shaft sleeve in an annular array, one end of each paddle is provided with a paddle root connected with the shaft sleeve, the other end of each paddle is provided with a paddle tail end far away from the shaft sleeve, and the included angle between each paddle and a horizontal line is gradually reduced from the paddle root to the paddle tail end. In some embodiments, the blade increases in width from the blade root to the blade tip. In some embodiments, a cambered surface transition is connected between the blade root and the blade tail end. In some embodiments, the blade root has an angle α of 30 ° to 45 ° with respect to the horizontal, and the blade tip has an angle β of 5 ° to 20 ° with respect to the horizontal. In some embodiments, both sides of the blade tip are rounded. In some embodiments, the shaft sleeve is respectively provided with a plurality of fixing pieces connected with a plurality of paddles, and one end of each fixing piece is provided with a plurality of fasteners connected with the root parts of the paddles. In some embodiments, the other end of the fixing member has a contact cambered surface connected to the outer peripheral wall of the shaft sleeve. In some embodiments, the fixing member is provided with a reinforcing rib connected with the outer peripheral wall of the shaft sleeve. In some embodiments, the plurality of fasteners are disposed on each side of the stiffener. In some embodiments, the number of paddles is 4. The utility model has the beneficial effects that the included angle between the blade and the horizontal line is designed to be gradually changed, the included angle between the blade and the horizontal line is gradually reduced from the blade root to the blade tail end, the local fluid stress is actively regulated and controlled, the speed gradient is reduced, the axial and radial flow is balanced, the power consumption is reduced, the blade is designed to be gradually widened, the projection area of the blade can be effectively increased, the rising of gas is prevented in biological fermentation, the gas holding rate of the stirrer is increased, 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. Drawings In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that it is within the scope of the utility model to one skilled in the art to obtain other drawings from these drawings without inventive faculty. FIG. 1 is a perspective view of an embodiment of the present utility model; FIG. 2 is a top view of an embodiment of the present utility model; FIG. 3 is a front view of an embodiment of the present utility model; fig. 4 is a front view of a blade according to an embodiment of the present utility model. Detailed Description In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. Unless defined otherwise, all technical and scien