Staggered three-dimensional helical ribbon stirring paddle

Abstract

The utility model relates to a staggered three-dimensional helical ribbon stirring paddle. A shaft flange is fixed at the upper end part of a stirring shaft; at least one group of staggered three-dimensional helical ribbon components are mounted in the height direction of the stirring shaft; the staggered three-dimensional helical ribbon assembly comprises first, second, third and fourth upper-layer supporting cross rods, first, second, third and fourth middle-layer supporting cross rods, first, second, third and fourth lower-layer supporting cross rods, a first outer-edge straight helical ribbon blade, a second outer-edge straight helical ribbon blade, a first internal staggered helical ribbon blade and a second internal staggered helical ribbon blade; and a third internal staggered helical ribbon blade and a fourth internal staggered helical ribbon blade. According to the stirring paddle, three-dimensional mixing is enhanced, a mixing dead zone is reduced, the energy transfer efficiency is improved, the energy consumption is reduced, and the high-efficiency performance of the stirring paddle can be kept in a low-viscosity range, a medium-viscosity range and a high-viscosity range.

Description

TECHNICAL FIELD

[0001] The utility model relates to a stirring paddle, and concretely discloses a staggered three-dimensional screw stirring paddle. BACKGROUND

[0002] High viscosity fluid is increasingly applied in industrial production, and many high polymer polymers are high viscosity fluid, and many of them are non-Newtonian fluid. Viscosity changes in the stirring process, so the requirement of the stirrer is higher.

[0003] Although the conventional screw stirring paddle is widely applied in many aspects, the following deficiencies still exist:

[0004] I. mixing efficiency

[0005] 1. local mixing is uneven;

[0006] 2. limited adaptability to complex material system.

[0007] II. energy consumption

[0008] 1. high energy consumption of high viscosity material;

[0009] 2. energy utilization rate needs to be improved. SUMMARY

[0010] The utility model aims at overcoming the deficiencies in the prior art, and provides a staggered three-dimensional screw stirring paddle which can enhance three-dimensional mixing, reduce mixing dead zones, improve energy transmission efficiency, and reduce energy consumption.

[0011] According to the technical scheme provided by the utility model, the staggered three-dimensional screw stirring paddle comprises a shaft flange and a stirring shaft, and a shaft flange is fixed to the upper end of the stirring shaft;

[0012] Characterized in that at least one group of staggered three-dimensional screw assembly is installed in the height direction of the stirring shaft, the staggered three-dimensional screw assembly comprises a first upper layer support cross bar, a second upper layer support cross bar, a third upper layer support cross bar, a fourth upper layer support cross bar, a first middle layer support cross bar, a second middle layer support cross bar, a third middle layer support cross bar, a fourth middle layer support cross bar, a first lower layer support cross bar, a second lower layer support cross bar, a third lower layer support cross bar, a fourth lower layer support cross bar, a first outer edge straight screw blade, a second outer edge straight screw blade, a first inner staggered screw blade, a second inner staggered screw blade, a third inner staggered screw blade and a fourth inner staggered screw blade;

[0013] The first upper layer support crossbar, the second upper layer support crossbar, the third upper layer support crossbar, the fourth upper layer support crossbar, the first middle layer support crossbar, the second middle layer support crossbar, the third middle layer support crossbar, the fourth middle layer support crossbar, the first lower layer support crossbar, the second lower layer support crossbar, the third lower layer support crossbar and the fourth lower layer support crossbar are fixed on the stirring shaft, the first upper layer support crossbar, the second upper layer support crossbar, the third upper layer support crossbar and the fourth upper layer support crossbar are arranged in a cross shape, the first middle layer support crossbar, the second middle layer support crossbar, the third middle layer support crossbar and the fourth middle layer support crossbar are arranged in a cross shape, and the first lower layer support crossbar, the second lower layer support crossbar, the third lower layer support crossbar and the fourth lower layer support crossbar are arranged in a cross shape;

[0014] The first middle layer support crossbar is located directly below the first upper layer support crossbar and has a length smaller than that of the first upper layer support crossbar, the second middle layer support crossbar is located directly below the second upper layer support crossbar and has a length smaller than that of the second upper layer support crossbar, the third middle layer support crossbar is located directly below the third upper layer support crossbar and has a length smaller than that of the third upper layer support crossbar, and the fourth middle layer support crossbar is located directly below the fourth upper layer support crossbar and has a length smaller than that of the fourth upper layer support crossbar;

[0015] The first lower layer support crossbar is located directly below the first middle layer support crossbar and has a length greater than that of the first middle layer support crossbar, the second lower layer support crossbar is located directly below the second middle layer support crossbar and has a length greater than that of the second middle layer support crossbar, the third lower layer support crossbar is located directly below the third middle layer support crossbar and has a length greater than that of the third middle layer support crossbar, and the fourth lower layer support crossbar is located directly below the fourth middle layer support crossbar and has a length greater than that of the fourth middle layer support crossbar;

[0016] The upper end of the first outer straight helical blade is connected to the outer end of the first upper layer support crossbar, the lower end of the first outer straight helical blade is connected to the outer end of the third lower layer support crossbar, the upper end of the second outer straight helical blade is connected to the outer end of the second upper layer support crossbar, and the lower end of the second outer straight helical blade is connected to the outer end of the fourth lower layer support crossbar;

[0017] The upper end of the first inner staggered helical blade is connected to the outer end of the third upper layer support crossbar, the middle of the first inner staggered helical blade is connected to the outer end of the fourth middle layer support crossbar, and the lower end of the first inner staggered helical blade is connected to the fourth lower layer support crossbar close to the stirring shaft;

[0018] The upper end of the second internal staggered spiral blade is connected to the outer end of the fourth upper layer support crossbar, the middle part of the second internal staggered spiral blade is connected to the outer end of the first middle layer support crossbar, and the lower end of the second internal staggered spiral blade is connected to the third lower layer support crossbar near the stirring shaft position;

[0019] The upper end of the third internal staggered spiral blade is connected to the second upper layer support crossbar near the stirring shaft position, the middle part of the third internal staggered spiral blade is connected to the outer end of the third middle layer support crossbar, and the lower end of the third internal staggered spiral blade is connected to the outer end of the first lower layer support crossbar;

[0020] The upper end of the fourth internal staggered spiral blade is connected to the first upper layer support crossbar near the stirring shaft position, the middle part of the fourth internal staggered spiral blade is connected to the outer end of the fourth middle layer support crossbar, and the lower end of the fourth internal staggered spiral blade is connected to the outer end of the second lower layer support crossbar.

[0021] As a preferred, the first upper layer support crossbar, the second upper layer support crossbar, the third upper layer support crossbar, the fourth upper layer support crossbar, the first lower layer support crossbar, the second lower layer support crossbar, the third lower layer support crossbar and the fourth lower layer support crossbar are all perpendicular to the stirring shaft, the lengths of the first upper layer support crossbar, the second upper layer support crossbar, the third upper layer support crossbar, the fourth upper layer support crossbar, the first lower layer support crossbar, the second lower layer support crossbar, the third lower layer support crossbar and the fourth lower layer support crossbar are all equal, and the first upper layer support crossbar and the second upper layer support crossbar are coaxially arranged, the third upper layer support crossbar and the fourth upper layer support crossbar are coaxially arranged, the first lower layer support crossbar and the second lower layer support crossbar are coaxially arranged, and the third lower layer support crossbar and the fourth lower layer support crossbar are coaxially arranged.

[0022] As a preferred, the first middle layer support crossbar, the second middle layer support crossbar, the third middle layer support crossbar and the fourth middle layer support crossbar are all perpendicular to the stirring shaft, the lengths of the first middle layer support crossbar, the second middle layer support crossbar, the third middle layer support crossbar and the fourth middle layer support crossbar are all equal, and the first middle layer support crossbar and the second middle layer support crossbar are coaxially arranged, and the third middle layer support crossbar and the fourth middle layer support crossbar are coaxially arranged.

[0023] The three-dimensional mixing is enhanced, the mixing dead zone is reduced, the energy transmission efficiency is improved, and the energy consumption is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the front view of the utility model.

[0025] Figure 2This is a top view of the present invention.

[0026] Figure 3 This is the left view of this utility model.

[0027] Figure 4 yes Figure 1 Axonometric view. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] A staggered three-dimensional ribbon agitator, such as Figures 1-4 As shown, it includes a shaft flange 1 and a stirring shaft 2, with the shaft flange 1 fixed at the upper end of the stirring shaft 2;

[0030] At least one set of staggered three-dimensional spiral ribbon assemblies is installed in the height direction of the stirring shaft 2. The staggered three-dimensional spiral ribbon assembly includes a first upper support crossbar 3.1, a second upper support crossbar 3.2, a third upper support crossbar 3.3, a fourth upper support crossbar 3.4, a first middle support crossbar 4.1, a second middle support crossbar 4.2, a third middle support crossbar 4.3, a fourth middle support crossbar 4.4, a first lower support crossbar 5.1, a second lower support crossbar 5.2, a third lower support crossbar 5.3, a fourth lower support crossbar 5.4, a first outer straight spiral ribbon blade 6.1, a second outer straight spiral ribbon blade 6.2, a first inner staggered spiral ribbon blade 7.1, a second inner staggered spiral ribbon blade 7.2, a third inner staggered spiral ribbon blade 7.3, and a fourth inner staggered spiral ribbon blade 7.4.

[0031] The first upper layer support crossbar 3.1, the second upper layer support crossbar 3.2, the third upper layer support crossbar 3.3, the fourth upper layer support crossbar 3.4, the first middle layer support crossbar 4.1, the second middle layer support crossbar 4.2, the third middle layer support crossbar 4.3, the fourth middle layer support crossbar 4.4, the first lower layer support crossbar 5.1, the second lower layer support crossbar 5.2, the third lower layer support crossbar 5.3 and the fourth lower layer support crossbar 5.4 are all fixed on the stirring shaft 2, the first upper layer support crossbar 3.1, the second upper layer support crossbar 3.2, the third upper layer support crossbar 3.3 and the fourth upper layer support crossbar 3.4 are arranged in a cross shape, the first middle layer support crossbar 4.1, the second middle layer support crossbar 4.2, the third middle layer support crossbar 4.3 and the fourth middle layer support crossbar 4.4 are arranged in a cross shape, and the first lower layer support crossbar 5.1, the second lower layer support crossbar 5.2, the third lower layer support crossbar 5.3 and the fourth lower layer support crossbar 5.4 are arranged in a cross shape;

[0032] The first middle layer support crossbar 4.1 is located directly below the first upper layer support crossbar 3.1 and the length of the first middle layer support crossbar 4.1 is less than the length of the first upper layer support crossbar 3.1, the second middle layer support crossbar 4.2 is located directly below the second upper layer support crossbar 3.2 and the length of the second middle layer support crossbar 4.2 is less than the length of the second upper layer support crossbar 3.2, the third middle layer support crossbar 4.3 is located directly below the third upper layer support crossbar 3.3 and the length of the third middle layer support crossbar 4.3 is less than the length of the third upper layer support crossbar 3.3, and the fourth middle layer support crossbar 4.4 is located directly below the fourth upper layer support crossbar 3.4 and the length of the fourth middle layer support crossbar 4.4 is less than the length of the fourth upper layer support crossbar 3.4;

[0033] The first lower layer support crossbar 5.1 is located directly below the first middle layer support crossbar 4.1 and the length of the first lower layer support crossbar 5.1 is greater than the length of the first middle layer support crossbar 4.1, the second lower layer support crossbar 5.2 is located directly below the second middle layer support crossbar 4.2 and the length of the second lower layer support crossbar 5.2 is greater than the length of the second middle layer support crossbar 4.2, the third lower layer support crossbar 5.3 is located directly below the third middle layer support crossbar 4.3 and the length of the third lower layer support crossbar 5.3 is greater than the length of the third middle layer support crossbar 4.3, and the fourth lower layer support crossbar 5.4 is located directly below the fourth middle layer support crossbar 4.4 and the length of the fourth lower layer support crossbar 5.4 is greater than the length of the fourth middle layer support crossbar 4.4;

[0034] The upper end of the first outer straight helical blade 6.1 is connected to the outer end of the first upper support crossbar 3.1, the lower end of the first outer straight helical blade 6.1 is connected to the outer end of the third lower support crossbar 5.3, the upper end of the second outer straight helical blade 6.2 is connected to the outer end of the second upper support crossbar 3.2, and the lower end of the second outer straight helical blade 6.2 is connected to the outer end of the fourth lower support crossbar 5.4;

[0035] The upper end of the first inner staggered helical blade 7.1 is connected to the outer end of the third upper support crossbar 3.3, the middle of the first inner staggered helical blade 7.1 is connected to the outer end of the fourth middle support crossbar 4.4, and the lower end of the first inner staggered helical blade 7.1 is connected to the fourth lower support crossbar 5.4 near the position of the stirring shaft 2;

[0036] The upper end of the second inner staggered helical blade 7.2 is connected to the outer end of the fourth upper support crossbar 3.4, the middle of the second inner staggered helical blade 7.2 is connected to the outer end of the first middle support crossbar 4.1, and the lower end of the second inner staggered helical blade 7.2 is connected to the third lower support crossbar 5.3 near the position of the stirring shaft 2;

[0037] The upper end of the third inner staggered helical blade 7.3 is connected to the second upper support crossbar 3.2 near the position of the stirring shaft 2, the middle of the third inner staggered helical blade 7.3 is connected to the outer end of the third middle support crossbar 4.3, and the lower end of the third inner staggered helical blade 7.3 is connected to the outer end of the first lower support crossbar 5.1;

[0038] The upper end of the fourth inner staggered helical blade 7.4 is connected to the first upper support crossbar 3.1 near the position of the stirring shaft 2, the middle of the fourth inner staggered helical blade 7.4 is connected to the outer end of the fourth middle support crossbar 4.4, and the lower end of the fourth inner staggered helical blade 7.4 is connected to the outer end of the second lower support crossbar 5.2.

[0039] The first upper layer support cross bar 3.1, the second upper layer support cross bar 3.2, the third upper layer support cross bar 3.3, the fourth upper layer support cross bar 3.4, the first lower layer support cross bar 5.1, the second lower layer support cross bar 5.2, the third lower layer support cross bar 5.3 and the fourth lower layer support cross bar 5.4 are all perpendicular to the stirring shaft 2, the lengths of the first upper layer support cross bar 3.1, the second upper layer support cross bar 3.2, the third upper layer support cross bar 3.3, the fourth upper layer support cross bar 3.4, the first lower layer support cross bar 5.1, the second lower layer support cross bar 5.2, the third lower layer support cross bar 5.3 and the fourth lower layer support cross bar 5.4 are all equal, and the first upper layer support cross bar 3.1 and the second upper layer support cross bar 3.2 are coaxially arranged, the third upper layer support cross bar 3.3 and the fourth upper layer support cross bar 3.4 are coaxially arranged, the first lower layer support cross bar 5.1 and the second lower layer support cross bar 5.2 are coaxially arranged, and the third lower layer support cross bar 5.3 and the fourth lower layer support cross bar 5.4 are coaxially arranged.

[0040] The first middle layer support cross bar 4.1, the second middle layer support cross bar 4.2, the third middle layer support cross bar 4.3 and the fourth middle layer support cross bar 4.4 are all perpendicular to the stirring shaft 2, the lengths of the first middle layer support cross bar 4.1, the second middle layer support cross bar 4.2, the third middle layer support cross bar 4.3 and the fourth middle layer support cross bar 4.4 are all equal, and the first middle layer support cross bar 4.1 and the second middle layer support cross bar 4.2 are coaxially arranged, and the third middle layer support cross bar 4.3 and the fourth middle layer support cross bar 4.4 are coaxially arranged.

[0041] In the utility model, support cross bar installation hole is set up on stirring shaft 2, support cross bar is installed in support cross bar installation hole and is welded, and the support cross bar that projects out circle of stirring shaft 2 forms first upper layer support cross bar 3.1 and second upper layer support cross bar 3.2, and through this method, third upper layer support cross bar 3.3, fourth upper layer support cross bar 3.4, first lower layer support cross bar 5.1, second lower layer support cross bar 5.2, third lower layer support cross bar 5.3 and fourth lower layer support cross bar 5.4 can be formed and be perpendicular to stirring shaft 2.

[0042] In the utility model, since first outer edge straight screw blade 6.1, second outer edge straight screw blade 6.2, first internal staggered screw blade 7.1, second internal staggered screw blade 7.2, third internal staggered screw blade 7.3 and fourth internal staggered screw blade 7.4 are staggered arrangement, in actual use process, has the following advantages:

[0043] 1. It allows materials to flow not only axially and radially within the mixing container, but also with a stronger tangential flow. When mixing mixtures of solid particles with different sizes and densities and liquids, this three-dimensional mixing mode allows smaller particles to better penetrate into the gaps between larger particles, while ensuring that materials of different densities are evenly distributed in all directions, thereby achieving a more efficient and thorough mixing effect.

[0044] 2. It can break up areas where material flow is slow or even stagnant. The staggered spiral blades change the flow path of the material, allowing materials that would otherwise easily accumulate in the corners or near the walls of the container to be fully agitated. In mixing tanks containing high-viscosity materials, the staggered three-dimensional spiral agitator of this invention can draw high-viscosity materials from the bottom and side walls of the container into the main mixing zone, avoiding the problem of insufficient mixing in certain areas.

[0045] 3. Improves energy transfer efficiency. During the mixing process, the staggered arrangement of the spiral ribbons allows the shear and mixing forces applied by the agitator to the material to be more effectively transferred to all parts of the material. When mixing highly viscous materials, the staggered three-dimensional spiral ribbon agitator of this invention can distribute the energy input from the motor more evenly into the material. Compared with traditional agitators, under the same energy input, more material can receive sufficient mixing energy, thereby improving the mixing effect.

[0046] 4. It can improve energy transfer efficiency and reduce energy consumption while achieving the same stirring effect. In large-scale chemical stirring reactions, ordinary stirrers require high power to maintain stirring speed and effect. However, the staggered three-dimensional spiral ribbon stirring paddle of this invention can achieve the same mixing, heat transfer or reaction promotion effect with lower power due to its more efficient energy utilization method, thereby saving energy costs.

[0047] 5. Excellent adaptability to high-viscosity materials. High-viscosity materials experience greater resistance during stirring, making it difficult for ordinary agitators to achieve sufficient flow and mixing. The powerful stirring action of the staggered three-dimensional spiral ribbon agitator of this invention can create effective flow channels in high-viscosity materials, allowing the materials to be gradually sheared and mixed.

[0048] 6. For materials containing solid particles, the staggered three-dimensional spiral agitator of this invention also shows good adaptability, as it can prevent the sedimentation and agglomeration of solid particles during the agitation process.

[0049] Finally, it should be explained that the above specific embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the examples, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. An interleaved three-dimensional spiral ribbon stirring paddle, comprising a shaft flange (1) and a stirring shaft (2), wherein the shaft flange (1) is fixed on the upper end of the stirring shaft (2); The application is characterized in that in At least one set of interleaved three-dimensional spiral ribbon assemblies is installed on the stirring shaft (2) in the height direction, wherein the interleaved three-dimensional spiral ribbon assemblies comprise a first upper layer support crossbar (3.1), a second upper layer support crossbar (3.2), a third upper layer support crossbar (3.3), a fourth upper layer support crossbar (3.4), a first middle layer support crossbar (4.1), a second middle layer support crossbar (4.2), a third middle layer support crossbar (4.3), a fourth middle layer support crossbar (4.4), a first lower layer support crossbar (5.1), a second lower layer support crossbar (5.2), a third lower layer support crossbar (5.3), a fourth lower layer support crossbar (5.4), a first outer edge straight spiral ribbon blade (6.1), a second outer edge straight spiral ribbon blade (6.2), a first inner interleaved spiral ribbon blade (7.1), a second inner interleaved spiral ribbon blade (7.2), a third inner interleaved spiral ribbon blade (7.3), and a fourth inner interleaved spiral ribbon blade (7.4); The first upper layer support crossbar (3.1), the second upper layer support crossbar (3.2), the third upper layer support crossbar (3.3), the fourth upper layer support crossbar (3.4), the first middle layer support crossbar (4.1), the second middle layer support crossbar (4.2), the third middle layer support crossbar (4.3), the fourth middle layer support crossbar (4.4), the first lower layer support crossbar (5.1), the second lower layer support crossbar (5.2), the third lower layer support crossbar (5.3), and the fourth lower layer support crossbar (5.4) are all fixed on the stirring shaft (2), wherein the first upper layer support crossbar (3.1), the second upper layer support crossbar (3.2), the third upper layer support crossbar (3.3), and the fourth upper layer support crossbar (3.4) are arranged in a cross shape, the first middle layer support crossbar (4.1), the second middle layer support crossbar (4.2), the third middle layer support crossbar (4.3), and the fourth middle layer support crossbar (4.4) are arranged in a cross shape, and the first lower layer support crossbar (5.1), the second lower layer support crossbar (5.2), the third lower layer support crossbar (5.3), and the fourth lower layer support crossbar (5.4) are arranged in a cross shape. The first middle layer support crossbar (4.1) is located directly below the first upper layer support crossbar (3.1) and the length of the first middle layer support crossbar (4.1) is less than that of the first upper layer support crossbar (3.1), the second middle layer support crossbar (4.2) is located directly below the second upper layer support crossbar (3.2) and the length of the second middle layer support crossbar (4.2) is less than that of the second upper layer support crossbar (3.2), the third middle layer support crossbar (4.3) is located directly below the third upper layer support crossbar (3.3) and the length of the third middle layer support crossbar (4.3) is less than that of the third upper layer support crossbar (3.3), and the fourth middle layer support crossbar (4.4) is located directly below the fourth upper layer support crossbar (3.4) and the length of the fourth middle layer support crossbar (4.4) is less than that of the fourth upper layer support crossbar (3.4); The first lower layer support crossbar (5.1) is located directly below the first middle layer support crossbar (4.1) and the length of the first lower layer support crossbar (5.1) is greater than that of the first middle layer support crossbar (4.1), the second lower layer support crossbar (5.2) is located directly below the second middle layer support crossbar (4.2) and the length of the second lower layer support crossbar (5.2) is greater than that of the second middle layer support crossbar (4.2), the third lower layer support crossbar (5.3) is located directly below the third middle layer support crossbar (4.3) and the length of the third lower layer support crossbar (5.3) is greater than that of the third middle layer support crossbar (4.3), and the fourth lower layer support crossbar (5.4) is located directly below the fourth middle layer support crossbar (4.4) and the length of the fourth lower layer support crossbar (5.4) is greater than that of the fourth middle layer support crossbar (4.4); The upper end of the first outer straight helical blade (6.1) is connected to the outer end of the first upper layer support crossbar (3.1), the lower end of the first outer straight helical blade (6.1) is connected to the outer end of the third lower layer support crossbar (5.3), the upper end of the second outer straight helical blade (6.2) is connected to the outer end of the second upper layer support crossbar (3.2), and the lower end of the second outer straight helical blade (6.2) is connected to the outer end of the fourth lower layer support crossbar (5.4); The upper end of the first inner staggered helical blade (7.1) is connected to the outer end of the third upper layer support crossbar (3.3), the middle part of the first inner staggered helical blade (7.1) is connected to the outer end of the fourth middle layer support crossbar (4.4), and the lower end of the first inner staggered helical blade (7.1) is connected to the fourth lower layer support crossbar (5.4) near the stirring shaft (2); The upper end of the second inner staggered helical blade (7.2) is connected to the outer end of the fourth upper layer support crossbar (3.4), the middle part of the second inner staggered helical blade (7.2) is connected to the outer end of the first middle layer support crossbar (4.1), and the lower end of the second inner staggered helical blade (7.2) is connected to the third lower layer support crossbar (5.3) near the stirring shaft (2); The upper end of the third internal staggered spiral blade (7.3) is connected to the second upper layer support crossbar (3.2) near the stirring shaft (2), the middle part of the third internal staggered spiral blade (7.3) is connected to the outer end of the third middle layer support crossbar (4.3), and the lower end of the third internal staggered spiral blade (7.3) is connected to the outer end of the first lower layer support crossbar (5.1); The upper end of the fourth internal staggered spiral blade (7.4) is connected to the first upper layer support crossbar (3.1) near the stirring shaft (2), the middle part of the fourth internal staggered spiral blade (7.4) is connected to the outer end of the fourth middle layer support crossbar (4.4), and the lower end of the fourth internal staggered spiral blade (7.4) is connected to the outer end of the second lower layer support crossbar (5.2).

2. The staggered helical ribbon impeller of claim 1 wherein: The first upper layer support crossbar (3.1), the second upper layer support crossbar (3.2), the third upper layer support crossbar (3.3), the fourth upper layer support crossbar (3.4), the first lower layer support crossbar (5.1), the second lower layer support crossbar (5.2), the third lower layer support crossbar (5.3), and the fourth lower layer support crossbar (5.4) are all perpendicular to the stirring shaft (2), the lengths of the first upper layer support crossbar (3.1), the second upper layer support crossbar (3.2), the third upper layer support crossbar (3.3), the fourth upper layer support crossbar (3.4), the first lower layer support crossbar (5.1), the second lower layer support crossbar (5.2), the third lower layer support crossbar (5.3), and the fourth lower layer support crossbar (5.4) are all equal, and the first upper layer support crossbar (3.1) and the second upper layer support crossbar (3.2) are coaxially arranged, the third upper layer support crossbar (3.3) and the fourth upper layer support crossbar (3.4) are coaxially arranged, the first lower layer support crossbar (5.1) and the second lower layer support crossbar (5.2) are coaxially arranged, and the third lower layer support crossbar (5.3) and the fourth lower layer support crossbar (5.4) are coaxially arranged.

3. The staggered helical ribbon impeller of claim 1 wherein: The first middle layer support crossbar (4.1), the second middle layer support crossbar (4.2), the third middle layer support crossbar (4.3), and the fourth middle layer support crossbar (4.4) are all perpendicular to the stirring shaft (2), the lengths of the first middle layer support crossbar (4.1), the second middle layer support crossbar (4.2), the third middle layer support crossbar (4.3), and the fourth middle layer support crossbar (4.4) are all equal, and the first middle layer support crossbar (4.1) and the second middle layer support crossbar (4.2) are coaxially arranged, the third middle layer support crossbar (4.3) and the fourth middle layer support crossbar (4.4) are coaxially arranged.

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