Segmented helical vane

Abstract

The utility model discloses sectional type spiral blade, including first spiral axle, second spiral axle and two auger blades, two auger blades are welded respectively on the outer surface of first spiral axle and the outer surface of second spiral axle, and one end of first spiral axle is connected with second spiral axle through the shaft part, and the shaft part includes the round table connecting portion, the shell positioning seat, the spline connecting axle and the import part, and one end of second spiral axle is provided with the recessed position, the recessed position is provided with the keyway position in the inside, the spline connecting axle is integrally formed and sets up in the end of round table connecting portion, the end of spline connecting axle installs import part, and the spline connecting axle is connected with the keyway position of recessed position through import part. The utility model discloses a shaft part including the round table connecting portion, the shell positioning seat, the spline connecting axle and the import part, so that the connection of first spiral axle and second spiral axle has good connecting precision, keeps good rotary precision when rotating, and reduces the axial bounce error.

Description

Technical Field

[0001] This utility model relates to segmented helical blades and belongs to the field of helical technology. Background Technology

[0002] The spiral blade is one of the most easily worn parts in a horizontal spiral discharge centrifuge. The spiral blade is usually welded to the spindle. For some products, the lifespan of the spiral blade is the lifespan of the equipment.

[0003] Existing helical blades, such as the segmented helical blade disclosed in patent application CN202321933045.5, include a first helical shaft, a first helical blade, and a first limiting rod. The first helical blade is connected to the outer side of the first helical shaft, and the first limiting rod is connected to the inner side of the first helical shaft. A second helical shaft is disposed on the outer side of the first helical shaft, and a second helical blade is connected to the outer side of the second helical shaft. A first insertion groove is formed on the first helical shaft, and an insertion rod is connected to the first helical shaft. A second insertion groove is formed on the wrapping tube. This segmented helical blade, with its first helical shaft, allows for the disassembly of the threaded rod when a segment of the helical blade is damaged. This facilitates the disassembly and replacement of the damaged segment of the first or second helical shaft, thus avoiding the inconvenience of replacing the entire helical blade during replacement.

[0004] The disadvantages of the aforementioned helical blades are that the disassembly and assembly of the threaded rods are inconvenient, and the first and second helical shafts are set in sections, with no connection between them and the helical mounting housing, which makes the first and second helical shafts prone to axial displacement during rotation. Utility Model Content

[0005] The purpose of this invention is to provide segmented helical blades to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a segmented helical blade, comprising a first helical shaft, a second helical shaft, and two auger blades. The two auger blades are respectively welded to the outer surfaces of the first and second helical shafts. One end of the first helical shaft is connected to the second helical shaft via a coupling component. The coupling component includes a frustum connecting part, a housing positioning seat, a spline connecting shaft, and a guide part. One end of the second helical shaft has a notch, and the inside of the notch has a keyway. The spline connecting shaft is integrally formed at the end of the frustum connecting part, and the guide part is installed at the end of the spline connecting shaft. The spline connecting shaft is connected to the keyway of the notch via the guide part.

[0007] In the above-mentioned segmented helical blade, an annular notch is provided between the spline connecting shaft and the frustum connecting part, and the annular notch is inserted into one end of the second helical shaft.

[0008] In the segmented helical blades described above, a rubber liner is installed inside the recess, and the rubber liner is interlocked with the inlet portion.

[0009] In the above-mentioned segmented spiral blades, the outer surface of each auger blade is coated with a polyurea anti-corrosion coating and an aluminum-silicon anti-corrosion layer.

[0010] In the segmented helical blades described above, the thickness of the polyurea anti-corrosion coating is equal to the thickness of the aluminum-silicon anti-corrosion layer.

[0011] In the above-mentioned segmented helical blade, the polyurea anti-corrosion coating includes a base layer and a top layer, wherein the base layer is an isocyanate-modified epoxy resin and the top layer is polyurea.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model relates to a segmented helical blade. By setting a coupling component including a frustum connecting part, a housing positioning seat, a spline connecting shaft, and a guide part, one end of the second helical shaft has a notch with a keyway inside. The spline connecting shaft is integrally formed at the end of the frustum connecting part, and the guide part is installed at the end of the spline connecting shaft. The spline connecting shaft is connected to the keyway of the notch via the guide part. This ensures good connection accuracy between the first and second helical shafts, maintaining good rotational accuracy during rotation and reducing axial runout error. Simultaneously, the housing positioning seat ensures a firm connection between the first and second helical shafts and the helical mounting housing, guaranteeing the stability of the overall transmission. Attached Figure Description

[0014] Fig. 1 This is a schematic diagram of the segmented spiral blade of this utility model.

[0015] Fig. 2 This is a three-dimensional structural diagram of the first helical shaft of the segmented helical blade of this utility model.

[0016] Fig. 3 This is a schematic diagram of the segmented helical blade polyurea anti-corrosion coating of this utility model.

[0017] In the figure: 1. First spiral shaft; 2. Second spiral shaft; 3. Screw blade; 4. Frustum connecting part; 5. Keyway; 6. Rubber inner liner; 7. Housing positioning seat; 8. Spline connecting shaft; 9. Annular notch; 10. Inlet part; 11. Notch position; 12. Polyurea anti-corrosion coating; 13. Aluminum-silicon anti-corrosion layer. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figs. 1-3 This utility model provides a technical solution for segmented helical blades:

[0020] Example 1: The spiral blades include a first spiral shaft 1, a second spiral shaft 2, and two auger blades 3. The two auger blades 3 are respectively welded to the outer surfaces of the first spiral shaft 1 and the second spiral shaft 2. One end of the first spiral shaft 1 is connected to the second spiral shaft 2 through a coupling component. The coupling component includes a frustum connecting part 4, a housing positioning seat 7, a spline connecting shaft 8, and a guide part 10. One end of the second spiral shaft 2 is provided with a notch 11, and a keyway 5 is provided inside the notch 11. The spline connecting shaft 8 is integrally formed and provided at the end of the frustum connecting part 4. The guide part 10 is installed at the end of the spline connecting shaft 8, and the spline connecting shaft 8 is connected to the keyway 5 of the notch 11 through the guide part 10.

[0021] This design ensures good connection accuracy between the first helical shaft 1 and the second helical shaft 2, maintains good rotational accuracy during rotation, and reduces axial runout error.

[0022] Furthermore, in order to facilitate the connection between the second spiral shaft 2 and the frustum connecting part 4 and further increase the strength of the connection, an annular notch 9 is provided between the spline connecting shaft 8 and the frustum connecting part 4, and the annular notch 9 is inserted into one end of the second spiral shaft 2.

[0023] Furthermore, in order to better maintain a strong connection, a rubber liner 6 is installed inside the recess 11, and the rubber liner 6 is interlocked with the inlet part 10.

[0024] Example 2: The spiral blades include a first spiral shaft 1, a second spiral shaft 2, and two auger blades 3. The two auger blades 3 are respectively welded to the outer surfaces of the first spiral shaft 1 and the second spiral shaft 2. One end of the first spiral shaft 1 is connected to the second spiral shaft 2 through a coupling component. The coupling component includes a frustum connecting part 4, a housing positioning seat 7, a spline connecting shaft 8, and an inlet part 10. One end of the second spiral shaft 2 has a notch 11, and the inside of the notch 11 has a keyway 5. The spline connecting shaft 8 is integrally formed at the end of the frustum connecting part 4. The inlet part 10 is installed at the end of the spline connecting shaft 8, and the spline connecting shaft 8 is connected to the keyway 5 of the notch 11 through the inlet part 10. Each auger blade 3 is coated with a polyurea anti-corrosion coating 12 and an aluminum-silicon anti-corrosion layer 13 on its outer surface. The thickness of the polyurea anti-corrosion coating 12 and the thickness of the aluminum-silicon anti-corrosion layer 13 are equal. The polyurea anti-corrosion coating 12 includes a base layer and a top layer. The base layer is an isocyanate-modified epoxy resin, and the top layer is polyurea.

[0025] This solution utilizes a polyurea anti-corrosion coating 12 and an aluminum-silicon anti-corrosion layer 13 to ensure that each auger blade 3 has good anti-corrosion performance.

[0026] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A segmented helical blade, comprising a first helical shaft (1), a second helical shaft (2), and two auger blades (3), wherein the two auger blades (3) are respectively welded to the outer surface of the first helical shaft (1) and the outer surface of the second helical shaft (2), characterized in that, One end of the first spiral shaft (1) is connected to the second spiral shaft (2) through a coupling component. The coupling component includes a frustum connecting part (4), a housing positioning seat (7), a spline connecting shaft (8), and a guide part (10). One end of the second spiral shaft (2) is provided with a notch (11). A keyway (5) is provided inside the notch (11). The spline connecting shaft (8) is integrally formed and disposed at the end of the frustum connecting part (4). The guide part (10) is installed at the end of the spline connecting shaft (8). The spline connecting shaft (8) is connected to the keyway (5) of the notch (11) through the guide part (10).

2. The segmented helical blade according to claim 1, characterized in that: An annular notch (9) is provided between the spline connecting shaft (8) and the frustum connecting part (4), and the annular notch (9) is inserted into one end of the second spiral shaft (2).

3. The segmented helical blade according to claim 1, characterized in that: A rubber liner (6) is installed inside the recess (11), and the rubber liner (6) is interlocked with the inlet (10).

4. The segmented helical blade according to claim 1, characterized in that: Each of the auger blades (3) has a polyurea anti-corrosion coating (12) and an aluminum-silicon anti-corrosion layer (13) applied to its outer surface.

5. The segmented helical blade according to claim 4, characterized in that: The thickness of the polyurea anti-corrosion coating (12) is equal to the thickness of the aluminum-silicon anti-corrosion layer (13).

6. The segmented helical blade according to claim 5, characterized in that: The polyurea anti-corrosion coating (12) includes a base layer and a top layer, wherein the base layer is an isocyanate-modified epoxy resin and the top layer is polyurea.

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