Axial flow paddle

Abstract

The utility model provides an axial flow paddle, and relates to the technical field of stirring. The multiple first blade assemblies are evenly distributed in the circumferential direction of the rotating shaft, each first blade assembly comprises at least one first blade, and the distance from the end, away from the rotating shaft, of each first blade to the axis of the rotating shaft is a first distance; the multiple second blade assemblies are evenly distributed in the circumferential direction of the rotating shaft, each second blade assembly comprises at least one second blade, and the distance from the end, away from the rotating shaft, of each second blade to the axis of the rotating shaft is a second distance; the first blade assemblies and the second blade assemblies are sequentially distributed in the circumferential direction of the rotating shaft at intervals, and the first distance is larger than the second distance. According to the axial flow paddle, the short blades are introduced on the basis of the long blades, the middle position of the axial flow paddle is reinforced, the thrust of the middle position of the axial flow paddle is enhanced, the thrust of the axial flow paddle is averaged, and fluid friction is reduced.

Description

Technical Field

[0001] The present application relates to the field of stirring technology, and in particular to an axial flow slurry. Background Art

[0002] In the prior art, in the field of stirring, axial flow paddles are often composed of several long blades, which results in the linear velocity of the blades at one end close to the central axis being smaller than the linear velocity at the end far from the central axis, which in turn results in weak thrust in the middle of the axial flow paddle, generating excess friction of the fluid.

[0003] At present, the existing axial flow propellers widen the blades near the central axis or increase the inclination angle. Although this method can reduce excess fluid friction to a certain extent, the extent is limited and the structural space is limited. At the same time, adjusting the inclination angle too much will also cause the blades to be subject to greater resistance. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, the present application aims to provide an axial flow propeller to even out the thrust of the axial flow propeller and reduce fluid friction.

[0005] The present application provides an axial flow propeller, comprising: a rotating shaft, wherein the rotating shaft is cylindrical;

[0006] a plurality of first blade assemblies, wherein the plurality of first blade assemblies are evenly distributed along the circumference of the rotating shaft, and the first blade assembly includes at least one first blade, and a distance between an end of the first blade away from the rotating shaft and the axis of the rotating shaft is a first distance;

[0007] a plurality of second blade assemblies, wherein the plurality of second blade assemblies are evenly distributed along the circumference of the rotating shaft, and the second blade assembly includes at least one second blade, and the distance between the end of the second blade away from the rotating shaft and the axis of the rotating shaft is a second distance;

[0008] The first blade assembly and the second blade assembly are spaced apart in sequence along the circumference of the rotation axis, and the first distance is greater than the second distance.

[0009] According to the technical solutions provided in certain embodiments of the present application, the first blade assembly includes one first blade and the second blade assembly includes multiple second blades.

[0010] According to the technical solution provided in certain embodiments of the present application, the first blade includes a first stirring end away from the rotating shaft and a second stirring end close to the rotating shaft, and the second stirring end is fixedly connected to the rotating shaft.

[0011] According to the technical solution provided in certain embodiments of the present application, the second blade includes a third stirring end away from the rotating shaft and a fourth stirring end close to the rotating shaft, and the fourth stirring end is fixedly connected to the rotating shaft.

[0012] According to the technical solutions provided in certain embodiments of the present application, the relationship between the first distance and the second distance satisfies: Rr≥1 / 3R and 1 / 2≦r / R≦2 / 3; wherein R is the first distance and r is the second distance.

[0013] According to the technical solution provided in certain embodiments of the present application, the first stirring end and the second stirring end are inclined along a first direction and smoothly connected, the first stirring end has a first inclination angle α1, and 15°≦α1≦30°; the second stirring end has a second inclination angle α2, and 30°≦α2≦45°; the inclination angles of the first inclination angle and the second inclination angle satisfy: 15°≦α2-α1≦20°.

[0014] According to the technical solution provided in certain embodiments of the present application, the third stirring end and the fourth stirring end are inclined along the first direction and smoothly connected, the third stirring end has a third inclination angle β1, and 15°≦β1≦30°; the fourth stirring end has a fourth inclination angle β2, and 30°≦β2≦45°; the inclination angles of the third inclination angle and the fourth inclination angle satisfy: 15°≦β2-β1≦20°.

[0015] According to the technical solution provided in certain embodiments of the present application, the width of the second stirring end is greater than the width of the first stirring end, and the relationship between the first stirring end and the second stirring end and the first distance satisfies: 2 / 5R≦L1≦2 / 3R; wherein L1 is the width of the second stirring end or the width of the first stirring end, and R is the first distance.

[0016] According to the technical solution provided in certain embodiments of the present application, the width of the fourth stirring end is greater than the width of the third stirring end, and the relationship between the third stirring end, the fourth stirring end and the second distance satisfies: 2 / 5r≦L2≦2 / 3r; wherein L2 is the width of the fourth stirring end or the width of the third stirring end, and r is the second distance.

[0017] According to the technical solution provided in certain embodiments of the present application, the rotating shaft includes a plurality of columnar connecting members arranged circumferentially and perpendicular to the axis of the rotating shaft, the plurality of connecting members are fixedly connected to the rotating shaft at one end close to the rotating shaft, and the second stirring end and the fourth stirring end are respectively fixedly connected to the end of the plurality of connecting members away from the rotating shaft.

[0018] Compared with the prior art, the present application has the following advantages: multiple first blade assemblies are evenly distributed along the circumference of the rotating shaft, and the first blade assembly includes at least one first blade, and the distance between the end of the first blade away from the rotating shaft and the axis of the rotating shaft is a first distance; multiple second blade assemblies are evenly distributed along the circumference of the rotating shaft, and the second blade assembly includes at least one second blade, and the distance between the end of the second blade away from the rotating shaft and the axis of the rotating shaft is a second distance; the first blade assemblies and the second blade assemblies are sequentially spaced along the circumference of the rotating shaft, and the first distance is greater than the second distance. This axial flow paddle introduces short blades on the basis of long blades. The long blades and the short blades jointly stir the fluid. The short blades reinforce the middle position of the axial flow paddle, strengthen the thrust of the middle position of the axial flow paddle, make the thrust of the axial flow paddle average, and reduce fluid friction.

[0019] It should be understood that the description of technical features, technical solutions, beneficial effects or similar language in this application does not imply that all features and advantages can be realized in any single embodiment. On the contrary, it is understood that the description of a feature or beneficial effect means that a specific technical feature, technical solution or beneficial effect is included in at least one embodiment. Therefore, the description of a technical feature, technical solution or beneficial effect in this specification does not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions and beneficial effects described in the present embodiment can also be combined in any appropriate manner. Those skilled in the art will understand that the embodiment can be implemented without one or more specific technical features, technical solutions or beneficial effects of a specific embodiment. In other embodiments, additional technical features and beneficial effects can also be identified in specific embodiments that do not embody all embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A schematic diagram of a top view of an axial flow slurry provided in an embodiment of the present application;

[0022] Figure 2 This is a schematic diagram of the main structure of an axial flow slurry provided in an embodiment of the present application;

[0023] Figure 3 This is a left-side structural schematic diagram of an axial flow slurry provided in an embodiment of the present application.

[0024] The text annotations in the figure represent:

[0025] 1. Rotating shaft; 2. Connecting piece; 2-1, first connecting piece; 2-2, second connecting piece; 3. First blade; 4. Second blade; 5. First stirring end; 6. Second stirring end; 7. Third stirring end; 8. Fourth stirring end; α1, first inclination angle; α2, second inclination angle; β1, third inclination angle; β2, fourth inclination angle. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. The description in this section is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present application. Specifically, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined or explained in subsequent figures. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0028] As mentioned in the background technology, in order to solve the problems in the prior art, this embodiment provides an axial flow slurry, including:

[0029] A rotating shaft 1, wherein the rotating shaft 1 is cylindrical;

[0030] a plurality of first blade assemblies, wherein the plurality of first blade assemblies are evenly distributed along the circumference of the rotating shaft 1, and the first blade assembly includes at least one first blade 3, and the distance between an end of the first blade 3 away from the rotating shaft 1 and the axis of the rotating shaft 1 is a first distance;

[0031] a plurality of second blade assemblies, wherein the plurality of second blade assemblies are evenly distributed along the circumference of the rotating shaft 1, and the second blade assembly includes at least one second blade 4, and the distance between the end of the second blade 4 away from the rotating shaft 1 and the axis of the rotating shaft 1 is a second distance;

[0032] The first blade assembly and the second blade assembly are spaced apart in sequence along the circumference of the rotating shaft 1 , and the first distance is greater than the second distance.

[0033] Specifically, if Figure 1 As shown, the rotating shaft 1 is a columnar structure extending along a first direction, and has a columnar through hole inside for installing a driving structure. Both ends of the rotating shaft 1 form annular end surfaces.

[0034] A plurality of first blade assemblies and a plurality of second blade assemblies are evenly distributed along the circumference of the rotating shaft 1, and the first blade assemblies and the second blade assemblies are spaced in sequence so that the first blade assembly and the second blade assembly can evenly stir the fluid, and the first blade assembly includes at least one first blade 3, and the second blade assembly includes at least one second blade 4, the first blade 3 and the second blade 4 are both perpendicular to the rotating shaft 1 and extend radially along the rotating shaft 1; the distance from one end of the first blade 3 away from the rotating shaft 1 to the axis of the rotating shaft 1 is a first distance, and the distance from one end of the second blade 4 away from the rotating shaft 1 to the axis of the rotating shaft 1 is a second distance, and the first distance is greater than the second distance; that is, the first blade 3 is a long blade and the second blade 4 is a short blade; preferably, the first blade assembly includes one first blade 3 and the second blade assembly includes multiple second blades 4, that is, two adjacent first blades 3 are provided with multiple second blades 4, and the multiple second blades 4 strengthen the thrust on the middle position of the axial flow paddle to reduce excess friction of the fluid.

[0035] The present application provides an axial flow paddle, comprising a cylindrical rotating shaft; a plurality of first blade assemblies uniformly distributed along the circumference of the rotating shaft, the first blade assembly including at least one first blade, the distance between the end of the first blade away from the rotating shaft and the axis of the rotating shaft being a first distance; a plurality of second blade assemblies uniformly distributed along the circumference of the rotating shaft, the second blade assembly including at least one second blade, the distance between the end of the second blade away from the rotating shaft and the axis of the rotating shaft being a second distance; the first blade assemblies and the second blade assemblies are sequentially spaced along the circumference of the rotating shaft, and the first distance is greater than the second distance. This axial flow paddle introduces short blades on the basis of long blades, and the long blades and the short blades jointly stir the fluid. The short blades reinforce the middle position of the axial flow paddle, thereby strengthening the thrust of the middle position of the axial flow paddle, making the thrust of the axial flow paddle uniform and reducing fluid friction.

[0036] In a preferred embodiment, the first blade assembly includes one first blade 3 and the second blade assembly includes a plurality of second blades 4 .

[0037] Specifically, the number of the first blades 3 in the first blade assembly and the number of the second blades 4 in the second blade assembly can be determined according to specific circumstances, for example:

[0038] The first blade assembly includes a plurality of first blades 3, and the second blade assembly includes a plurality of second blades 4; that is, a plurality of short blades are provided at every interval of a plurality of long blades. It is understood that the number of the first blades and the second blades may be equal or unequal, and may be specifically set and adjusted according to actual conditions, and is not specifically limited here;

[0039] Or the first blade assembly includes a plurality of first blades 3, and the second blade assembly includes a second blade 4; that is, a short blade is provided at every interval of a plurality of long blades;

[0040] Or the first blade assembly includes a first blade 3, and the second blade assembly includes a plurality of second blades 4; that is, a plurality of short blades are provided between two adjacent long blades.

[0041] In a preferred embodiment, the first blade 3 includes a first stirring end 5 away from the rotating shaft 1 and a second stirring end 6 close to the rotating shaft 1 , and the second stirring end 6 is fixedly connected to the rotating shaft 1 .

[0042] Specifically, if Figure 1 As shown, the radial cross-section of the first blade 3 along the rotating shaft 1 is trapezoidal, and the first blade 3 includes a first stirring end 5 away from the rotating shaft 1 and a second stirring end 6 close to the rotating shaft 1; the rotating shaft 1 includes a plurality of circumferentially arranged columnar connecting members 2 perpendicular to the axis of the rotating shaft 1, and the connecting member 2 includes a plurality of first connecting members 2-1, the number of the first connecting members 2-1 is equal to the number of the first blades 3, the end of the first connecting member 2-1 close to the rotating shaft 1 is fixedly connected to the rotating shaft 1, and the second stirring end 6 is fixedly connected to the end of the first connecting member 2-1 away from the rotating shaft, so that the second stirring end 6 is fixedly connected to the rotating shaft 1.

[0043] In a preferred embodiment, the second blade 4 includes a third stirring end 7 away from the rotating shaft 1 and a fourth stirring end 8 close to the rotating shaft 1 , and the fourth stirring end 8 is fixedly connected to the rotating shaft 1 .

[0044] Specifically, if Figure 1As shown, the cross-section of the second blade 4 along the radial direction of the rotating shaft 1 is trapezoidal, and the second blade 4 includes a third stirring end 7 away from the rotating shaft 1 and a fourth stirring end 8 close to the rotating shaft; the rotating shaft 1 circumferentially includes a plurality of columnar connecting members 2 perpendicular to the axis of the rotating shaft 1, and the connecting member 2 includes a plurality of second connecting members 2-2, the number of the second connecting members 2-2 is equal to the number of the second blades 4, the end of the second connecting member 2-2 close to the rotating shaft 1 is fixedly connected to the rotating shaft 1, and the fourth stirring end 8 is fixedly connected to the end of the second connecting member 2-2 away from the rotating shaft, so that the fourth stirring end 8 is fixedly connected to the rotating shaft 1.

[0045] In a preferred embodiment, the relationship between the first distance and the second distance satisfies: Rr≥1 / 3R and 1 / 2≦r / R≦2 / 3; wherein R is the first distance and r is the second distance.

[0046] Specifically, if Figure 1 As shown, the distance between the first stirring end 5 and the axis of the rotating shaft 1 is a first distance, and the distance between the third stirring shaft 7 and the axis of the rotating shaft is a second distance. The relationship between the first distance and the second distance satisfies: Rr ≥ 1 / 3R and 1 / 2 ≤ r / R ≤ 2 / 3; where R is the first distance and r is the second distance. When the axial flow paddle stirs the fluid, the ratio of the second distance to the first distance satisfies 1 / 2 ≤ r / R ≤ 2 / 3, and the second blade 4 reinforces the thrust of the middle portion of the first blade 3.

[0047] In a preferred embodiment, the first stirring end 5 and the second stirring end 6 are inclined along a first direction and smoothly connected, the first stirring end 5 has a first inclination angle α1, and 15°≦α1≦30°; the second stirring end 6 has a second inclination angle α2, and 30°≦α2≦45°; the inclination angles of the first inclination angle and the second inclination angle satisfy: 15°≦α2-α1≦20°.

[0048] Specifically, if Figure 3 As shown, the first stirring end 5 and the second stirring end 6 are inclined relative to the annular end surface and in a direction perpendicular to the annular end surface. The first stirring end 5 and the second stirring end 6 are integrally formed, and the transition between the first stirring end 5 and the second stirring end 6 is flat and smooth.

[0049] The first stirring end 5 has a first inclination angle α1, and the inclination angle range of the first inclination angle α1 is 15°≦α1≦30°. The second stirring end 6 has a second inclination angle α2, and the inclination angle range of the second inclination angle α2 is 30°≦α2≦45°.

[0050] When the first inclination angle α1 of the first stirring end 5 is greater than 30°, the end face of the first stirring end 5 has a large thrust on the fluid, but the resistance it receives from the fluid is too large. Excessive resistance will increase driving power consumption. When the first inclination angle α1 of the first stirring end 5 is less than 15°, the end face of the first stirring end 5 has a relatively small resistance received from the fluid, but the thrust on the fluid is insufficient. Insufficient thrust leads to insufficient stirring of the fluid. Therefore, the first inclination angle α1 of the first stirring end 5 is set to 15°≦α1≦30° to ensure the thrust while minimizing the resistance received from the fluid as much as possible to reduce driving power consumption.

[0051] When the second inclination angle α2 of the second stirring end 6 is greater than 45°, the end face of the second stirring end 6 exerts a greater thrust on the fluid, but the resistance it receives from the fluid is too great. Excessive resistance will increase driving power consumption. When the second inclination angle α2 of the second stirring end 6 is less than 30°, the end face of the second stirring end 6 exerts relatively less resistance on the fluid, but the thrust on the fluid is insufficient. Insufficient thrust results in insufficient stirring of the fluid. Therefore, the second inclination angle α2 of the second stirring end 6 is set to 30°≦α2≦45° to ensure thrust while minimizing the resistance received from the fluid as much as possible to reduce driving power consumption.

[0052] The inclination angles of the first inclination angle α1 and the second inclination angle α2 satisfy: 15°≦α2-α1≦20°, so that the thrust of the second stirring end 6 on the fluid is greater than the thrust of the first stirring end 5 on the fluid, thereby strengthening the thrust of the middle position of the axial flow paddle.

[0053] In a preferred embodiment, the third stirring end 7 and the fourth stirring end 8 are inclined along the first direction and smoothly connected, the third stirring end 7 has a third inclination angle β1, and 15°≦β1≦30°; the fourth stirring end 8 has a fourth inclination angle β2, and 30°≦β2≦45°; the inclination angles of the third inclination angle and the fourth inclination angle satisfy: 15°≦β2-β1≦20°.

[0054] Specifically, if Figure 2 As shown, the third stirring end 7 and the fourth stirring end 8 are inclined along the first direction relative to the annular end surface, the third stirring end 7 and the fourth stirring end 8 are integrally formed, and the transition between the third stirring end 7 and the fourth stirring end 8 is flat and smooth.

[0055] The third stirring end 7 has a third inclination angle β1, and the inclination angle range of the third inclination angle β1 is 15°≦β1≦30°. The fourth stirring end 8 has a fourth inclination angle β2, and the inclination angle range of the fourth inclination angle β2 is 30°≦β2≦45°.

[0056] When the third inclination angle β1 of the third stirring end 7 is greater than 30°, the end face of the third stirring end 7 has a greater thrust on the fluid, but the resistance it receives from the fluid is too large. Excessive resistance will increase driving power consumption. When the third inclination angle β1 of the third stirring end 7 is less than 15°, the end face of the third stirring end 7 has a relatively small resistance received from the fluid, but the thrust on the fluid is insufficient. Insufficient thrust leads to insufficient stirring of the fluid. Therefore, the third inclination angle β1 of the third stirring end 7 is set to 15°≦β1≦30° to ensure the thrust while minimizing the resistance received from the fluid as much as possible to reduce driving power consumption.

[0057] When the fourth inclination angle β2 of the fourth stirring end 8 is greater than 45°, the end face of the fourth stirring end 8 exerts a greater thrust on the fluid, but the resistance it receives from the fluid is too great. Excessive resistance will increase driving power consumption. When the fourth inclination angle β2 of the fourth stirring end 8 is less than 30°, the end face of the fourth stirring end 8 suffers relatively less resistance from the fluid, but the thrust on the fluid is insufficient. Insufficient thrust results in insufficient stirring of the fluid. Therefore, the second inclination angle β2 of the fourth stirring end 8 is set to 30°≦β2≦45° to ensure thrust while minimizing the resistance received from the fluid as much as possible to reduce driving power consumption.

[0058] The inclination angles of the third inclination angle β1 and the fourth inclination angle β2 satisfy: 15°≦β2-β1≦20°, so that the thrust of the fourth stirring end 8 on the fluid is greater than the thrust of the third stirring end 7 on the fluid, thereby strengthening the thrust of the middle position of the axial flow paddle.

[0059] In a preferred embodiment, the width of the second stirring end 6 is greater than the width of the first stirring end 5, and the relationship between the first stirring end 5, the second stirring end 6 and the first distance satisfies: 2 / 5R≦L1≦2 / 3R; wherein L1 is the width of the second stirring end 6 or the width of the first stirring end 5, and R is the first distance.

[0060] Specifically, if Figure 1As shown, the width of the second stirring end 6 is greater than the width of the first stirring end 5, so that the force-bearing area of ​​the second stirring end 6 is greater than the force-bearing area of ​​the first stirring end 5, and the thrust of the second stirring end 6 on the fluid is greater than the thrust of the first stirring end 5 on the fluid, so as to strengthen the thrust of the middle position of the axial flow paddle; preferably, the width difference between the first stirring end 5 and the second stirring end 6 is 1 / 5R, wherein the width difference between the first stirring end 5 and the second stirring end 6 can also be other values, which can be adjusted differently according to specific circumstances and are not specifically limited here. The relationship between the first stirring end 5 and the second stirring end 6 and the first distance satisfies: 2 / 5R≦L1≦2 / 3R; wherein L1 is the width of the second stirring end 6 or the width of the first stirring end 5, and R is the first distance. wherein, the first distance R can be adjusted differently according to specific circumstances and is not limited here. the L1 is adjusted differently according to the length of the first distance R so that the second stirring end 6 and the first stirring end 5 meet different resistance and thrust requirements during the fluid stirring process.

[0061] In a preferred embodiment, the width of the fourth stirring end 8 is greater than the width of the third stirring end 7, and the relationship between the third stirring end 7 and the fourth stirring end 8 and the second distance satisfies: 2 / 5r≦L2≦2 / 3r; wherein L2 is the width of the fourth stirring end 8 or the width of the third stirring end 7, and r is the second distance.

[0062] Specifically, if Figure 1 As shown, the width of the fourth stirring end 8 is greater than the width of the third stirring end 7, so that the force-bearing area of ​​the fourth stirring end 8 is greater than the force-bearing area of ​​the third stirring end 7, and the thrust of the fourth stirring end 8 on the fluid is greater than the thrust of the third stirring end 7 on the fluid, so as to strengthen the thrust of the middle position of the axial flow paddle; preferably, the width difference between the third stirring end 7 and the fourth stirring end 8 is 1 / 5r, wherein the width difference between the third stirring end 7 and the fourth stirring end 8 can also be other values, and different adjustments can be made according to specific circumstances, which are not specifically limited here. The relationship between the third stirring end 7 and the fourth stirring end 8 and the second distance satisfies: 2 / 5r≦L2≦2 / 3r; wherein L2 is the width of the fourth stirring end 8 or the width of the third stirring end 7, and r is the second distance. Among them, the second distance r can be adjusted differently according to specific circumstances, and no further restrictions are made here. The L2 is adjusted differently according to the length of the second distance r so that the fourth stirring end 8 and the third stirring end 7 meet different resistance and thrust requirements during the fluid stirring process.

[0063] In a preferred embodiment, the rotating shaft 1 includes a plurality of columnar connecting members 2 arranged circumferentially and perpendicular to the axis of the rotating shaft 1, and the plurality of connecting members 2 are fixedly connected to the rotating shaft 1 at one end close to the rotating shaft 1, and the second stirring end 6 and the fourth stirring end 8 are respectively fixedly connected to the end of the plurality of connecting members 2 away from the rotating shaft 1.

[0064] Specifically, if Figure 1 As shown, the rotating shaft 1 circumferentially includes a plurality of columnar connecting members 2 perpendicular to the axis of the rotating shaft 1, and the columnar connecting members 2 extend radially along the rotating shaft 1. The columnar connecting members 2 include a first connecting member 2-1 and a second connecting member 2-2. The length of the first connecting member 2-1 is greater than the length of the second connecting member 2-2, and the end of the first connecting member 2-1 away from the rotating shaft 1 is fixedly connected to the second stirring end face 6, and the end of the second connecting member 2-2 away from the rotating shaft 1 is fixedly connected to the fourth stirring end face 8; the end of the first connecting member 2-1 close to the rotating shaft 1 and the end of the second connecting member 2-2 close to the rotating shaft 1 are respectively fixedly connected to the rotating shaft 1. Preferably, the first connecting member 2-1 and the second connecting member 2-2 are provided with a snap-in groove at one end away from the rotating shaft 1, and the opening direction of the snap-in groove is the same as the extension direction of the columnar connecting member 2, so that the second stirring end face 6 and the fourth stirring end face 8 are installed in the snap-in groove and then the second stirring end face 6 and the fourth stirring end face 8 are welded and fixed at the snap-in joint; wherein, the fixing method of the second stirring end face 6 and the fourth stirring end face 8 to the columnar connecting member 2 can also be other types of fixing methods, and different adjustments can be made according to specific circumstances, which are not specifically limited here.

[0065] The present application provides an axial flow paddle, comprising a cylindrical rotating shaft; a plurality of first blade assemblies uniformly distributed along the circumference of the rotating shaft, the first blade assembly including at least one first blade, the distance between the end of the first blade away from the rotating shaft and the axis of the rotating shaft being a first distance; a plurality of second blade assemblies uniformly distributed along the circumference of the rotating shaft, the second blade assembly including at least one second blade, the distance between the end of the second blade away from the rotating shaft and the axis of the rotating shaft being a second distance; the first blade assemblies and the second blade assemblies are sequentially spaced along the circumference of the rotating shaft, and the first distance is greater than the second distance. This axial flow paddle introduces short blades on the basis of long blades, and the long blades and the short blades jointly stir the fluid. The short blades reinforce the middle position of the axial flow paddle, thereby strengthening the thrust of the middle position of the axial flow paddle, making the thrust of the axial flow paddle uniform and reducing fluid friction.

[0066] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can also make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. An axial flow pulp, characterized in that: include: A rotating shaft (1), wherein the rotating shaft (1) is cylindrical; A plurality of first blade assemblies, the plurality of first blade assemblies being evenly distributed along the circumference of the rotating shaft (1), and the first blade assembly comprising at least one first blade (3), the distance between an end of the first blade (3) away from the rotating shaft (1) and the axis of the rotating shaft (1) being a first distance; a plurality of second blade assemblies, the plurality of second blade assemblies being evenly distributed along the circumference of the rotating shaft (1), and the second blade assemblies comprising at least one second blade (4), the distance between an end of the second blade (4) away from the rotating shaft (1) and the axis of the rotating shaft (1) being a second distance; The first blade assembly and the second blade assembly are sequentially spaced apart along the circumference of the rotating shaft (1), and the first distance is greater than the second distance; The relationship between the first distance and the second distance satisfies: Rr≥1 / 3R and 1 / 2≦r / R≦2 / 3; where R is the first distance and r is the second distance.

2. The axial flow slurry according to claim 1, characterized in that: The first blade assembly includes a first blade (3) and the second blade assembly includes a plurality of second blades (4).

3. The axial flow slurry according to claim 1, characterized in that: The first blade (3) comprises a first stirring end (5) away from the rotating shaft (1) and a second stirring end (6) close to the rotating shaft (1), and the second stirring end (6) is fixedly connected to the rotating shaft (1).

4. The axial flow pulp according to claim 3, characterized in that: The second blade (4) comprises a third stirring end (7) away from the rotating shaft (1) and a fourth stirring end (8) close to the rotating shaft (1), and the fourth stirring end (8) is fixedly connected to the rotating shaft (1).

5. The axial flow slurry according to claim 3, characterized in that: The first stirring end (5) and the second stirring end (6) are tilted along a first direction and smoothly transitionally connected, the first stirring end (5) has a first inclination angle α1, and 15°≦α1≦30°; the second stirring end (6) has a second inclination angle α2, and 30°≦α2≦45°; the first inclination angle α1 and the second inclination angle α2 satisfy: 15°≦α2-α1≦20°.

6. The axial flow slurry according to claim 4, characterized in that: The third stirring end (7) and the fourth stirring end (8) are inclined along the first direction and smoothly transitionally connected, the third stirring end (7) has a third inclination angle β1, and 15°≦β1≦30°; the fourth stirring end (8) has a fourth inclination angle β2, and 30°≦β2≦45°; the third inclination angle β1 and the fourth inclination angle β2 satisfy: 15°≦β2-β1≦20°.

7. The axial flow slurry according to claim 3, characterized in that: The width of the second stirring end (6) is greater than the width of the first stirring end (5), and the relationship between the first stirring end (5), the second stirring end (6) and the first distance satisfies: 2 / 5R≦L1≦2 / 3R; wherein L1 is the width of the second stirring end (6) or the width of the first stirring end (5), and R is the first distance.

8. The axial flow slurry according to claim 4, characterized in that: The width of the fourth stirring end (8) is greater than the width of the third stirring end (7), and the relationship between the third stirring end (7), the fourth stirring end (8) and the second distance satisfies: 2 / 5r≦L2≦2 / 3r; wherein L2 is the width of the fourth stirring end (8) or the width of the third stirring end (7), and r is the second distance.

9. The axial flow slurry according to claim 4, characterized in that: The rotating shaft (1) comprises a plurality of columnar connecting members (2) arranged circumferentially and perpendicular to the axis of the rotating shaft (1); one end of the plurality of connecting members (2) close to the rotating shaft (1) is fixedly connected to the rotating shaft (1); and the second stirring end (6) and the fourth stirring end (8) are respectively fixedly connected to one end of the plurality of connecting members (2) away from the rotating shaft (1).

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