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CN-224207797-U - Multistage bending type axial flow stirring paddle and solid-liquid stirring equipment

CN224207797UCN 224207797 UCN224207797 UCN 224207797UCN-224207797-U

Abstract

The application provides a multi-section bending type axial flow stirring paddle and solid-liquid stirring equipment, wherein the multi-section bending type axial flow stirring paddle comprises 2 to 5 paddles and a hub, and the paddles are uniformly distributed along the circumferential direction of the hub. The blade comprises a first blade area, a second blade area, a third blade area and a fourth blade area which are sequentially connected, wherein the first blade area, the second blade area, the third blade area and the fourth blade area are all in a flat plate shape. And included angles of more than 160 degrees and less than 180 degrees are formed among the first blade area, the second blade area, the third blade area and the fourth blade area. The center of the first blade area, the center of the second blade area, the center of the third blade area and the center of the fourth blade area are sequentially close to the bottom of the stirring paddle. The intersection line of the first blade area and the second blade area, the intersection line of the second blade area and the third blade area, and the intersection line of the third blade area and the fourth blade area are parallel to each other.

Inventors

  • ZHAN XIAOQIANG
  • HE HAO
  • ZHANG JIANXIN
  • WEI MINGLI
  • YANG TAO
  • XIAO HONGHAI

Assignees

  • 上海森永工程设备股份有限公司

Dates

Publication Date
20260508
Application Date
20250526

Claims (10)

  1. 1. A multi-section bending type axial flow stirring paddle is characterized by comprising 2 to 5 paddles and a hub, wherein the paddles are uniformly distributed along the circumferential direction of the hub, The blade comprises a first blade zone, a second blade zone, a third blade zone and a fourth blade zone which are connected in sequence, The first blade area, the second blade area, the third blade area and the fourth blade area are all flat plates, The first blade region and the second blade region, the second blade region and the third blade region, and the third blade region and the fourth blade region all form an included angle which is more than 160 degrees and less than 180 degrees, The centers of the first blade area, the second blade area, the third blade area and the fourth blade area are gradually close to the bottom of the stirring paddle, The intersection line of the first blade area and the second blade area, the intersection line of the second blade area and the third blade area, and the intersection line of the third blade area and the fourth blade area are parallel to each other, The radial cross section of the hub perpendicular to the axial direction is at an angle of 10 to 60 degrees relative to the third blade zone.
  2. 2. The multi-segment bending axial flow stirring paddle of claim 1 wherein the outer edges of the first and fourth blade regions each comprise an outwardly convex arcuate portion, The radius of the arcuate portion of the first blade region is less than the radius of the arcuate portion of the fourth blade region.
  3. 3. The multi-segment bending axial flow stirring paddle of claim 1, wherein, The third blade area is connected with the hub, The third blade zone extends in a radial direction of the hub.
  4. 4. The multi-segment bending axial flow stirring paddle of claim 1, wherein, The diameter of the circumcircle of the stirring paddle is D, The furthest distance of the edge of the first blade zone of the hub parallel to the axial cross-section of each of the intersections of the blades is 0.1D to 0.36D.
  5. 5. The multi-segment bending axial flow stirring paddle of claim 1, wherein, The diameter of the circumcircle of the stirring paddle is D, The third blade region has a width of 0.07D to 0.14D in a direction perpendicular to each of the intersecting lines of the blades.
  6. 6. The multi-segment bending axial flow stirring paddle of claim 1, wherein, The diameter of the circumcircle of the stirring paddle is D, The furthest distance from the edge of the first blade zone to the edge of the fourth blade zone in a direction perpendicular to each of the intersection lines of the blades is from 0.2D to 0.55D.
  7. 7. The multi-segment bending axial flow stirring paddle of claim 1, wherein, The diameter of the circumcircle of the stirring paddle is D, The distance between adjacent intersecting lines of the paddles is 0.08 to 0.16D.
  8. 8. The multi-segment bent axial flow stirrer blade of claim 1, wherein the blade is connected to the hub via one or more connections.
  9. 9. A solid-liquid stirring apparatus, characterized by comprising: stirring kettle, stirring shaft and motor, and The multi-section bending axial flow stirring paddle of any one of claim 1 to 8, The stirring shaft is arranged in the stirring kettle, the multistage bending type axial flow stirring paddles are connected with the stirring shaft, and the motor is connected with the stirring shaft.
  10. 10. The solid-liquid stirring apparatus according to claim 9, wherein the stirring shaft is provided with a plurality of the multi-section bending type axial flow stirring paddles, The interlayer spacing between two adjacent multi-section bending type axial flow stirring paddles is 0.75 to 1.5 times of the diameter of the circumscribed circle of the multi-section bending type axial flow stirring paddles.

Description

Multistage bending type axial flow stirring paddle and solid-liquid stirring equipment Technical Field The application relates to the technical field of stirring equipment, in particular to a multi-section bending type axial flow stirring paddle and solid-liquid stirring equipment. Background In the current industrial field, the stirring technology plays an irreplaceable role as a key link for realizing efficient production and reaction. The stirring paddle is a key component of the stirring device, and can provide energy required by a mixing process for materials in the stirring device through the stirring process and keep the materials in a proper flowing state, so that two or more materials are uniformly mixed and well contacted. Meanwhile, the stirring paddles can also strengthen the mass transfer and heat transfer effects of materials in the stirring equipment. Solid-liquid stirring equipment is an important type of stirring equipment, and has wide and deep application in various industries such as chemical metallurgy, biopharmaceutical industry, food production and the like. In a solid-liquid stirring system, the effective contact area and the contact efficiency of solid-liquid two-phase materials are directly determined by the material mixing efficiency and the suspension state of solid particles in stirring equipment, and are main factors influencing the phase mass transfer, heat transfer and chemical reaction in the whole stirring process. CN202087287U provides an axial flow stirrer consisting of blades, blade supports and a stirring hub. The paddle is fixed on the paddle support piece through the fastener, and the paddle support piece is connected with the stirring hub. The blade is formed by bending a steel plate according to a special bending process, the blade is connected to a blade supporting plate by bolts, nuts and other fasteners, the supporting plate forms a certain angle with the vertical direction, and the supporting plate is directly welded to the stirring hub. The axial flow stirrer and the blades of the traditional axial flow stirrer provided by the utility model all comprise at least part of variable-curvature cambered surfaces, and the production and processing processes of the variable-curvature cambered surfaces are complex and have higher production cost. And the large-scale manufacturing difficulty of the blade is further improved, which is not beneficial to the expansion of the production scale. Meanwhile, when the axial flow stirrer is applied to a solid-liquid two-phase mixed operation scene, the suspension capability of the axial flow stirrer on solid material particles is insufficient, and the solid material particles are easy to accumulate at the bottom of stirring equipment. Disclosure of utility model The present application has been made in view of the above state of the art. The application aims to provide a multi-section bending type axial flow stirring paddle which is simple in manufacturing process and low in production cost and can improve the suspension capacity of solid material particles in solid-liquid two-phase mixing operation. The application also provides solid-liquid stirring equipment comprising the multi-section bending type axial flow stirring paddle. The application provides a multi-section bending type axial flow stirring paddle which comprises 2 to 5 paddles and a hub, wherein the paddles are uniformly distributed along the circumferential direction of the hub, The blade comprises a first blade zone, a second blade zone, a third blade zone and a fourth blade zone which are connected in sequence, The first blade area, the second blade area, the third blade area and the fourth blade area are all flat plates, The first blade region and the second blade region, the second blade region and the third blade region, and the third blade region and the fourth blade region all form an included angle which is more than 160 degrees and less than 180 degrees, The centers of the first blade area, the second blade area, the third blade area and the fourth blade area are gradually close to the bottom of the stirring paddle, The intersection line of the first blade area and the second blade area, the intersection line of the second blade area and the third blade area, and the intersection line of the third blade area and the fourth blade area are parallel to each other, The radial cross section of the hub perpendicular to the axial direction is at an angle of 10 to 60 degrees relative to the third blade zone. In at least one possible embodiment, the outer edges of the first and fourth blade regions each comprise a convex arc, The radius of the arcuate portion of the first blade region is less than the radius of the arcuate portion of the fourth blade region. In at least one possible embodiment, the third blade zone is connected to the hub, The third blade zone extends in a radial direction of the hub. In at least one possible embodiment, the diameter of the circumcir