Rotor blades and rotor-stator systems used in mixer rotors

Abstract

[Solution] The present disclosure describes a rotor blade (1) for use in a mixer rotor, comprising a main body (2) and a plurality of rotor vanes (3) extending from a side surface of the main body (2), with a gap (10) between each pair of the rotor vanes (3), the gap (10) extending outward toward the periphery of the rotor blade (1) on a surface (100) that is angled or curved relative to the horizontal plane of the main body (2) of the rotor blade (1). The present disclosure also describes a rotor-stator system.

Description

[Technical Field]

[0001] The present disclosure relates to rotor blades used in mixer rotors and mixer rotor-stator systems. Summary of the Invention

[0002] The present disclosure is directed to a rotor blade for use in a mixer rotor, the rotor blade comprising a body and a plurality of rotor vanes extending from a side of the body, with a gap between each pair of rotor vanes, the gap extending outward toward the periphery of the rotor blade at a surface that is angled or curved relative to a horizontal plane of the rotor blade body. Preferably, each gap extends outward toward the periphery of the rotor blade at an angled or curved surface.

[0003] The rotor blades of the present disclosure are used in the rotor of a rotor-stator system of a mixer. The mixer may be used for many different types of ingredients, such as mixing ingredients with different phases, for example, one liquid phase and one solid phase. Furthermore, the rotor blades of the present disclosure are also suitable for mixing and processing different ingredients, such as mixing powders and liquids to create granules. One of the targets of the present disclosure is ingredients containing starch.

[0004] The present disclosure is directed to providing an optimal geometry between rotor blades that ensures a suitable transfer of material processed within the rotor from the rotor to the stator and then out of the mixer. By way of example only, the concepts of the present disclosure will be further understood from the embodiments provided below and the accompanying drawings. [Brief explanation of the drawings]

[0005] [Figure 1A] 1 illustrates one embodiment of a rotor-stator system according to the present disclosure.

[0006] [Figure 1B]1 illustrates one embodiment of a rotor-stator system according to the present disclosure.

[0007] [Figure 2A] 1 is a cross-section of a portion of a rotor-stator system according to one embodiment of the present disclosure.

[0008] [Figure 2B] FIG. 10 illustrates another view of a small portion of a rotor-stator system according to one embodiment of the present disclosure.

[0009] [Figure 3] 1 shows a rotor vane 3, which is a potential part of a rotor blade, according to one embodiment of the present disclosure.

[0010] Below, some specific embodiments of the present disclosure are provided.

[0011] According to one embodiment, each gap extends outwardly towards the periphery of the rotor blade in an angled or curved surface.

[0012] According to one embodiment, the angled or curved surface extends to an overlap surface that is used to overlap between the rotor blades when connected to a stator section that comprises a conical or cylindrical section.

[0013] According to yet another embodiment, the overlap surface has a length in the range of 0 mm to 55 mm, preferably in the range of 0 mm to 20 mm, and more preferably in the range of 0 mm to 10 mm. This length can be understood from the accompanying drawings. In this context, the rotor-stator slot length (see SlotL in FIG. 2B) can be considered as the corresponding length of the underside of the overlap surface.

[0014] Additionally, there may be other means for allowing the addition of water or other solutions. Accordingly, according to one embodiment, the overlapping surfaces are provided with channels, preferably near the edges of the angled or curved surfaces. The channels are provided to allow the addition of water. Additionally, water may be added via rotor-stator slots.

[0015] Furthermore, according to one embodiment, the angled or curved surface is angled or curved upward relative to the horizontal plane of the body of the rotor blade. This may be to ensure a more perpendicular spray angle from the rotor blade. Note that the relationship between this spray angle and the corresponding angle on the stator side is an important aspect, as will be explained further below.

[0016] Furthermore, according to yet another embodiment, the angled or curved surface has at least a recess adjacent the overlap surface, again to define a more perpendicular spray angle.

[0017] The rotor blade is also one aspect of the rotor blade according to the present disclosure.

[0018] According to one embodiment, each of the plurality of rotor blades has a protrusion provided along the extension of the at least one rotor blade, and at the front side of the rotor blade in the direction of rotation, the at least one rotor blade extends upward through point A2, which is the point furthest from the direction of rotation, and extends to point A1, which is the point closest to the direction of rotation, and point A1 is provided as the vertically highest point of the end of the protrusion, or at least is provided on the horizontal plane above the end of the protrusion.

[0019] Furthermore, the rotor blades may have different shapes. According to one embodiment, the at least one rotor blade extends through point A2, which is the point farthest from the direction of rotation, and extends to point A1, which is the point closest to the direction of rotation, with a distance A between points A1 and A2 being a distance A, where A>0. According to yet another embodiment, a protrusion is located at the end of the at least one rotor blade. According to yet another embodiment, the end of the protrusion has a thickness C extending from a base point B2 to an apex, preferably an apex A1, which is the point closest to the direction of rotation, and preferably C is in the range of 3 mm to 30 mm. According to yet another embodiment, the apex A1 is closer to the direction of rotation than the base point B2 of the end of the protrusion, which means that the end of the protrusion is inclined or curved outward in the direction of rotation from the base point B2 to the apex A1. According to yet another embodiment, the base point B2 and the apex A1 define an imaginary vertical end of the protrusion with an angle B°, which is in the range of -15° to 60°. According to yet another embodiment, an end surface is provided, the end surface being disposed from the apex A1 to the base B2 of the end, the end surface being inclined or concave, preferably inclined. Furthermore, according to yet another embodiment, the height H of the at least one rotor blade extends from the side of the rotor blade body to the apex of the at least one rotor blade, preferably at point A1, the point closest to the direction of rotation, and H is at least 2×A, preferably A / H is in the range of 1 / 50 to 2 / 5, more preferably A / H is in the range of 1 / 25 to 1 / 5, and most preferably A is at most 300 mm. According to yet another embodiment of the present disclosure, the height H of the at least one rotor blade extends from the side of the rotor blade body to the apex of the at least one rotor blade, H is less than D, where D is the diameter of the rotor blade body, and preferably H is at most D / 2.

[0020] Furthermore, according to yet another embodiment, the protrusion is provided at an end of the at least one rotor blade as a hook extension that extends from the main body of the at least one rotor blade at a non-perpendicular angle, away from the direction of rotation, to somewhere along the extension of the at least one rotor blade, and then curves back towards the direction of rotation to provide a hook extension in the direction of rotation.

[0021] Furthermore, according to one embodiment, the rotor blades extend from the outer periphery of a body, which is preferably circular. According to yet another embodiment, the rotor blades extend perpendicularly from a geometric XY coordinate plane of the side of the body, or at an angle ax in the X direction and / or an angle ay in the Y direction relative to a perfectly perpendicular extension from the geometric XY coordinate plane of the side of the body.

[0022] The present disclosure is also directed to a rotor-stator system comprising a rotor blade for use in a mixer rotor, the rotor blade comprising a body and a plurality of rotor vanes extending from a side of the body, with a gap between each pair of rotor vanes, the gap providing a surface extending in an overlapping surface that functions as a separate but overlapping surface for the conical or cylindrical portion of the stator portion of the rotor-stator system.

[0023] According to one embodiment, the overlapping surfaces have a length in the range of 0 mm to 55 mm, preferably in the range of 0 mm to 20 mm, more preferably in the range of 0 mm to 10 mm. Furthermore, according to yet another embodiment, the overlapping surfaces comprise channels, preferably the channels are provided near the edges of the angled or curved surfaces.

[0024] The present disclosure is also directed to a rotor-stator system comprising a rotor blade for use in a mixer rotor, the rotor blade comprising a body and a plurality of rotor vanes extending from one side of the body, with a gap between each pair of rotor vanes, the gap providing a surface extending at an overlapping surface that functions as a separate but overlapping surface for a conical or cylindrical portion of the stator portion of the rotor-stator system, S being the spray angle from the overlapping surface, K being the direction angle of the conical or cylindrical portion, the difference between angle S and angle K relative to each other being at most 60 degrees, preferably at most 45 degrees, more preferably at most 30 degrees, and most preferably at most 20 degrees.

[0025] As can be seen from the above, it is an important aspect of the present disclosure that the angles S from the overlapping surfaces to the orientation angles of the conical or cylindrical portions correspond or at least do not differ significantly. It is further understood that the difference between angles S and K is absolute, i.e., one or both of these angles may be negative relative to a given reference. Also, because the relationship between these angles is important, the receiving portion of the stator portion may be above or below vertical, i.e., anything from a cone to a cylinder. Furthermore, the angle may be set so that the spray is directed upward or downward, depending on the compatibility of the rest of the system. The difference in angle may also vary based on the ingredients being mixed.

[0026] According to yet another embodiment, V is the angular difference when the material being mixed leaves the angled or curved surface of the rotor blade and enters the conical or cylindrical surface of the stator section, V=KS, and -30° <V<30°である。

[0027] Furthermore, according to one embodiment, a rotor-stator slot is disposed between the underside of the overlapping surfaces of the rotor blades and the conical or cylindrical portion of the stator section, and preferably the rotor-stator slot has a length of 20 mm, preferably a maximum length of 15 mm, and most preferably a maximum length of 10 mm, which length is shown as "SlotL" in Figure 2B.

[0028] Furthermore, according to yet another embodiment, the rotor-stator slots are arranged so as to extend to a geometrical extension. Short rotor-stator slots extending to a certain geometrical extension are intended to minimize the risk of material fouling or hardening on the surface. Such accumulation of material on the surface is a risk, for example, when starch material is being processed or mixed. This means that the slots may become clogged and thus processing may be impaired. Providing a geometrical extension in the slots is intended to minimize the risk of clogging.

[0029] According to one embodiment, the rotor blade has a central unit that is used to connect the rotor blade to the rotor of the mixer.

[0030] 1A and 1B show one embodiment of a rotor-stator system according to the present disclosure. The rotor blade 1 comprises a body 2 and a plurality of rotor vanes 3 extending from the side of the body. A gap 10 is provided between each pair of rotor vanes 3, and the gap 10 extends outward toward the periphery of the rotor blade 1 in an angled or curved surface. The system also includes a conical or cylindrical portion 20 of the stator portion of the rotor-stator system. Note that the rotor-stator should be connected to other parts of the system, such as a framework that defines the exhaust used. This exhaust can be of many different types, such as a grid with only one opening or multiple openings.

[0031] 2A is a cross-section of a portion of a rotor-stator system according to one embodiment of the present disclosure, in this case showing rotor blade 3. Gap 10 has a surface 100 extending at overlap surface 101 that functions as a separate but overlapping surface for the conical or cylindrical portion of the stator portion of the rotor-stator system.

[0032] FIG. 2B shows another view of a small portion of a rotor-stator system according to one embodiment of the present disclosure. In this case, only a small portion of the gap 10 between a pair of rotor blades 3 is shown. The gap 10 has a surface 100 extending at an overlap surface 101 of the rotor blade 1 that overlaps the conical or cylindrical portion 20 of the stator portion of the rotor-stator system (see FIG. 2A). A slot is provided between the overlap surface 101 and another portion of the stator portion, the conical or cylindrical portion 20. As can be seen, the slot has a length indicated as SlotL. Furthermore, S is the spray angle from the overlap surface 100, and K is the direction angle of the conical or cylindrical portion 20. According to the present disclosure, the difference between the angle S and the angle K relative to each other is a maximum of 60 degrees.

[0033] FIG. 3 shows a rotor blade 3, a potential part of a rotor blade, according to one embodiment of the present disclosure. The rotor blade 3 has a protrusion provided along the extension of the at least one rotor blade 3. As can be seen, at the front side of the rotor blade 3 in the direction of rotation, the at least one rotor blade 3 extends upward through point A2, which is the point furthest from the direction of rotation, to point A1, which is the point closest to the direction of rotation, which in this case is provided as the vertically highest point of the end of the protrusion 4. Furthermore, in this case, the distance between points A2 and A1 is a distance A, where A>0. Furthermore, the rotor blade also has a peak. Furthermore, according to this embodiment, the end 5 of the protrusion 4 has a thickness C extending from the base point B2 to the apex, preferably the apex A1, which is the point closest to the direction of rotation.

[0034] Furthermore, in this embodiment, the base point B2 and the apex A1 define an imaginary vertical end of the protrusion 4 with an angle B°. Furthermore, the height H of the at least one rotor blade 3 extends from one side of the body 2 of the rotor blade 1 to the apex 6 of the at least one rotor blade, and H is at least 2×A.

Claims

1. A rotor blade (1) used in a mixer rotor, A main body (2), a plurality of rotor blades (3) extending from the side of the main body (2); Equipped with A gap (10) is provided between each pair of the rotor blades (3), the gaps (10) extend outwardly towards the periphery of the rotor blade (1) at surfaces (100) that are angled or curved relative to the horizontal plane of the body (2) of the rotor blade (1); Rotor blade (1).

2. 2. The rotor blade (1) of claim 1, wherein each said gap (10) extends outwardly towards the periphery of said rotor blade (1) at said angled or curved surface (100).

3. 3. The rotor blade (1) of claim 1 or 2, wherein the angled or curved surface (100) extends into an overlap surface (101) that is used to overlap with the rotor blade (1) when connected to a stator section comprising a conical or cylindrical section (20).

4. The rotor blade (1) of claim 3, wherein said overlap surface (101) has a length in the range of 0 mm to 55 mm, preferably in the range of 0 mm to 20 mm, more preferably in the range of 0 mm to 10 mm.

5. said overlapping surface (101) comprises a channel; Preferably, said channels are provided near the edges of said angled or curved surface (100). A rotor blade (1) according to claim 3 or 4.

6. 6. The rotor blade (1) of any one of claims 1 to 5, wherein the angled or curved surface (100) is angled or curved upwards relative to a horizontal plane of the body (2) of the rotor blade (1).

7. A rotor blade (1) according to any one of claims 3 to 6, wherein the angled or curved surface (100) has at least a recess in the vicinity of the overlap surface (101).

8. Each of the plurality of rotor blades (3) has a protrusion (4) provided along an extension of at least one of the rotor blades (3); At the front side of the rotor blade (3) in the direction of rotation, the at least one rotor blade (3) is at a point A, which is the farthest point from the direction of rotation. ２ Point A extends upward through the １ Extends to Point A １ is provided as the vertically highest point of the end of said protrusion (4), or at least on a horizontal plane above the end of said protrusion (4), A rotor blade (1) according to any one of claims 1 to 7.

9. The at least one rotor blade (3) is located at point A, which is the farthest point from the direction of rotation. ２ point A, which is the point closest to the direction of rotation. １ Extends to Point A １ and A ２ The distance between and is a distance A, where A>0. The rotor blade (1) of claim 8.

10. The rotor blade (1) of claim 8 or 9, wherein the protrusion (4) is at an end (5) of the at least one rotor vane (3).

11. The end (5) of the protrusion (4) is at the bottom point B ２ to a vertex, preferably a vertex A which is the closest point in the direction of rotation １ and has a thickness C extending to Preferably, C is in the range of 3 mm to 30 mm. The rotor blade (1) of claim 10.

12. The vertex A １ is the bottom point B of the end of the protrusion ２ The end (5) of the protrusion (4) is closer to the rotation direction than the bottom point B. ２ Viewed from the above, the vertex A １ 12. The rotor blade (1) of claim 11, wherein the blade is inclined or curved outward in the direction of rotation.

13. The bottom point B ２ and the vertex A １ defines an imaginary vertical edge of said projection (4) with an angle B°, The angle B° is in the range of −15° to 60°. A rotor blade (1) according to claim 11 or 12.

14. The apex A of the end (5) １ From the bottom point B ２ an end surface disposed at The end surface is inclined or recessed, preferably inclined. A rotor blade (1) according to any one of claims 8 to 13.

15. a height H of the at least one rotor vane (3) extending from the side of the body (2) of the rotor blade (1) to a top (6) of the at least one rotor vane (3); Preferably, the apex (6) is the point A, which is the closest point in the direction of rotation. １ Located in H is at least 2×A, preferably A / H is in the range of 1 / 50 to 2 / 5, more preferably A / H is in the range of 1 / 25 to 1 / 5, and most preferably A is at most 300 mm; A rotor blade (1) according to any one of claims 8 to 14.

16. a height H of the at least one rotor vane (3) extending from the side of the body (2) of the rotor blade (1) to a top (6) of the at least one rotor vane (3); said H being less than D, said D being the diameter of the rotor blade body (2), preferably said H being at most D / 2; A rotor blade (1) according to any one of claims 8 to 15.

17. the protrusion (4) is provided as a hook extension at the end (5) of the at least one rotor blade (3); the hook extension extends from the body (2) at a non-perpendicular angle such that the at least one rotor blade (3) extends away from the direction of rotation to anywhere along the extension of the at least one rotor blade (3) and then curves back towards the direction of rotation to provide the hook extension in the direction of rotation; A rotor blade (1) according to any one of claims 8 to 16.

18. The rotor blades (3) extend from the outer periphery of the body (2); The body (2) is preferably circular. A rotor blade (1) according to any one of claims 1 to 17.

19. 19. A rotor blade (1) according to any one of claims 1 to 18, wherein the rotor vanes (3) extend perpendicularly from a geometrical XY coordinate plane of the side surface of the body (2) or extend at an angle ax in the X direction and / or an angle ay in the Y direction relative to a state of extending completely perpendicularly from the geometrical XY coordinate plane of the side surface of the body (2).

20. A rotor-stator system comprising a rotor blade (1) for use in a mixer rotor, The rotor blade (1) comprises a main body (2) and a plurality of rotor blades (3) extending from the side of the main body (2); A gap (10) is provided between each pair of the rotor blades (3), the gap (10) provides a surface (100) extending in an overlapping surface (101) that functions as a separate but overlapping surface for the conical or cylindrical portion (20) of the stator portion of the rotor-stator system; Rotor-stator system.

21. The rotor-stator system of claim 20, wherein said overlapping surfaces (101) have a length in the range of 0 mm to 55 mm, preferably in the range of 0 mm to 20 mm, more preferably in the range of 0 mm to 10 mm.

22. said overlapping surface (101) comprises a channel; Preferably, said channels (101) are provided near the edges of an angled or curved surface (100).

22. A rotor-stator system according to claim 20 or 21.

23. S is the spray angle from the overlap surface (101), K is the orientation angle of the conical or cylindrical portion (20), the difference between the angle S and the angle K relative to each other is at most 60 degrees, preferably at most 45 degrees, more preferably at most 30 degrees, and most preferably at most 20 degrees; 23. A rotor-stator system according to any one of claims 20 to 22.

24. A rotor-stator system according to any one of claims 20 to 23, comprising a rotor blade (1) according to any one of claims 1 to 19.

25. 25. The rotor-stator system of claims 20 to 24, wherein V is the angular difference for when the material being mixed leaves the angled or curved surface (100) of the rotor blade (1) and enters the surface of the conical or cylindrical section (20) of the stator section, V=K-S, and -30°<V<30°.

26. a rotor stator slot is disposed between the underside of the overlap surface (101) of the rotor blade (1) and the conical or cylindrical part (20) of the stator part; Preferably, the rotor-stator slot has a length of 20 mm, preferably a maximum length of 15 mm, most preferably a maximum length of 10 mm.

26. A rotor-stator system according to any one of claims 20 to 25.

27. 27. The rotor-stator system of claim 26, wherein the rotor-stator slots are arranged to extend to a geometric extension.

28. 28. Rotor-stator system according to any one of claims 20 to 27, wherein the rotor blade (1) comprises a central unit used to connect the rotor blade (1) to the rotor of the mixer.

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