Spiral scraper of centrifugal machine

Abstract

The utility model provides a spiral scraper of a centrifugal machine. The spiral scraper of the centrifugal machine comprises a bottom plate, a spiral scraper body and a spiral scraper body, the scraper body is of a cylindrical structure with an internal through hole, the cylindrical structure is arranged on the bottom plate, the mounting through hole is communicated with the internal through hole of the cylindrical structure, spiral blades are arranged on the periphery of the scraper body, and the bottom plate and the spiral blades are arranged at intervals in the axial direction of the cylindrical structure; and the wear-resistant blocking structure comprises a blocking component and wear-resistant components, the wear-resistant blocking structure is connected between the spiral blade and the bottom plate, and the wear-resistant components are arranged on the two opposite sides of the blocking component in the circumferential direction of the cylindrical structure. According to the technical scheme, the problem that in the prior art, a bottom plate of a spiral scraper of a centrifugal machine is prone to abrasion is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifuges, in particular to a spiral scraper of a centrifuge. Background Art

[0002] Spiral screen centrifuge is mainly used for continuous solid-liquid separation. It mainly includes a base, a rotating part with a differential (screen structure and spiral scraper), a product chamber and an oil supply system. Since there is a speed difference between the spiral scraper located in the screen and the screen, in the process of solid-liquid separation, the solid particles remaining on the screen can pass through the gap between the screen and the spiral scraper, and be transported from the small diameter end of the spiral scraper to the large diameter end and dehydrated at the same time.

[0003] In the prior art, a barrier component is provided at the root of each spiral blade to block solid particles, so that solid particles flowing from the inside of the spiral scraper to between the spiral scraper and the screen can flow between two adjacent spiral blades. However, since the solid particles directly impact the barrier component after flowing out of the spiral scraper, it is easy to cause the barrier component connected to the root of each spiral blade to wear and wear through, thereby causing the solid particles between the bottom plate and the spiral blade to move along the circumference of the spiral scraper, which will cause wear of the bottom plate and easily lead to the scrapping of the entire spiral scraper. Utility Model Content

[0004] The main purpose of the utility model is to provide a spiral scraper for a centrifuge to solve the problem that the bottom plate of the spiral scraper for the centrifuge in the prior art is easy to wear.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a spiral scraper for a centrifuge, comprising: a bottom plate, on which a mounting through hole is provided; a scraper body, which is a cylindrical structure with an internal through hole, the cylindrical structure is arranged on the bottom plate, the mounting through hole is communicated with the internal through hole of the cylindrical structure, the outer periphery of the scraper body is provided with a spiral blade, and along the axial direction of the cylindrical structure, the bottom plate and the spiral blade are arranged at intervals; a wear-resistant barrier structure, comprising a barrier component and a wear-resistant component, the wear-resistant barrier structure is connected between the spiral blade and the bottom plate, and along the circumference of the cylindrical structure, wear-resistant components are provided on opposite sides of the barrier component.

[0006] Further, at least one of the scraper body and the bottom plate is detachably connected to the blocking member.

[0007] Furthermore, the blocking component includes: a blocking plate, one end of which is connected to the bottom plate, and the other end of which extends to the spiral blade along the axial direction of the cylindrical structure; a reinforcing plate, which is connected to the blocking plate and is located on one side of the blocking plate along the circumferential direction of the cylindrical structure.

[0008] Furthermore, the reinforcing plate and the blocking plate are arranged at an angle, one end of the reinforcing plate is connected to the other end of the blocking plate, and the other end of the reinforcing plate is supported on the bottom plate.

[0009] Further, a side of the baffle plate facing away from the reinforcing plate is provided with a wear-resistant component; and / or a side of the reinforcing plate facing away from the baffle plate is provided with a wear-resistant component.

[0010] Furthermore, a mounting plate is provided on one side of the bottom plate facing the scraper body, and the blocking plate is detachably connected to the mounting plate.

[0011] Furthermore, the wear-resistant barrier structure further includes a connecting member connected to the barrier member, and the connecting member is detachably connected to the scraper body.

[0012] Furthermore, the connecting member is an arc-shaped connecting plate arranged around the axis of the cylindrical structure, the first end of the arc-shaped connecting plate is connected to the blocking plate, the second end of the arc-shaped connecting plate is connected to the reinforcing plate, and the connection position of the arc-shaped connecting plate and the scraper body is located between the first end and the second end.

[0013] Furthermore, the spiral scraper of the centrifuge also includes: a supporting blade, which is spirally arranged around the cylindrical structure, and along the radial direction of the cylindrical structure, the supporting blade is connected to the end of the spiral blade away from the scraper body; an anti-wear component, which is arranged on the supporting blade, and the anti-wear component is located on the side of the supporting blade away from the bottom plate.

[0014] Furthermore, a plurality of positioning members are provided on the supporting blade, and the plurality of positioning members are arranged at intervals along the spiral direction of the supporting blade. The anti-wear component includes a plurality of anti-wear sheets, and each anti-wear sheet is provided with a positioning groove, and the positioning members are positioned and matched with the positioning groove.

[0015] By applying the technical solution of the utility model, when the spiral scraper conveys materials, the materials flowing through the interior of the scraper body to between the spiral scraper and the screen can flow along between two adjacent spiral blades. This embodiment arranges wear-resistant components on opposite sides of the barrier component, thereby improving the wear resistance of the wear-resistant barrier structure. In this way, the barrier component can be protected, thereby preventing the barrier component from being worn through by the material, thereby preventing the material from moving circumferentially along the scraper body in the interval between the spiral blades and the bottom plate, and further preventing the material from wearing the bottom plate, thereby protecting the bottom plate and preventing the spiral scraper from being irreparably damaged due to damage to the bottom plate, thereby extending the overall service life of the spiral scraper. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1A structural schematic diagram of an embodiment of a spiral scraper of a centrifuge of the utility model is shown;

[0018] Figure 2 Shows Figure 1 A schematic structural diagram of a wear-resistant barrier structure of a spiral scraper;

[0019] Figure 3 Shows Figure 1 A schematic diagram of the assembly structure of the supporting blades and the anti-wear component of the spiral scraper;

[0020] Figure 4 Shows Figure 1 A schematic diagram of the structure of the anti-wear component of the spiral scraper; and

[0021] Figure 5 Shows Figure 4 A cross-sectional view of the anti-wear component of the spiral scraper.

[0022] The above drawings include the following reference numerals:

[0023] 1. Bottom plate; 2. Mounting through hole; 3. Scraper body; 4. Spiral blade; 5. Blocking member; 51. Blocking plate; 52. Reinforcement plate; 6. Wear-resistant member; 7. Mounting plate; 8. Connecting member; 9. Support blade; 10. Anti-wear member; 11. Positioning piece; 12. Positioning groove. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] like Figures 1 to 5 As shown, an embodiment of the utility model provides a spiral scraper for a centrifuge. The spiral scraper of the centrifuge includes a base plate 1, a scraper body 3 and a wear-resistant barrier structure. Among them, a mounting through hole 2 is provided on the base plate 1; the scraper body 3 is a cylindrical structure with an internal through hole, the cylindrical structure is arranged on the base plate 1, the mounting through hole 2 is connected with the internal through hole of the cylindrical structure, the outer periphery of the scraper body 3 is provided with a spiral blade 4, and along the axial direction of the cylindrical structure, the base plate 1 and the spiral blade 4 are spaced apart; the wear-resistant barrier structure includes a barrier component 5 and a wear-resistant component 6, the wear-resistant barrier structure is connected between the spiral blade 4 and the base plate 1, and along the circumference of the cylindrical structure, wear-resistant components 6 are provided on opposite sides of the barrier component 5.

[0026] In the above technical scheme, when the spiral scraper conveys material, the material flowing through the inside of the scraper body 3 to the space between the spiral scraper and the screen can flow along between two adjacent spiral blades. In this embodiment, wear-resistant components 6 are provided on the opposite sides of the barrier component 5, so as to improve the wear resistance of the wear-resistant barrier structure. In this way, the barrier component 5 can be protected, thereby preventing the barrier component 5 from being worn through by the material, so as to prevent the material from moving circumferentially along the scraper body 3 in the interval between the spiral blades 4 and the bottom plate 1, and further preventing the material from wearing the bottom plate 1, so as to protect the bottom plate 1 and avoid irreparable damage to the spiral scraper due to damage to the bottom plate 1, so as to extend the overall service life of the spiral scraper.

[0027] Specifically, in an embodiment of the utility model, a plurality of flow holes are provided on the circumferential side wall of the cylindrical structure, the plurality of flow holes are arranged along the circumference of the cylindrical structure, and the flow holes are located at one end of the cylindrical structure close to the bottom plate 1, so that the material inside the cylindrical structure can flow from the inside of the cylindrical structure through the flow channel to between the outer wall of the cylindrical structure and the screen.

[0028] like Figure 1 As shown, in the embodiment of the utility model, at least one of the scraper body 3 and the bottom plate 1 is detachably connected to the blocking member 5 .

[0029] In the above technical solution, the barrier component 5 is detachably connected to at least one of the scraper body 3 and the base plate 1, so that the wear-resistant barrier structure can be easily replaced. When the wear-resistant barrier structure is worn due to long-term use, the wear-resistant barrier structure can be removed from the scraper body 3 and / or the base plate 1 and repaired, thereby extending the overall service life of the spiral scraper.

[0030] like Figure 2 As shown, in the embodiment of the utility model, the blocking member 5 includes a blocking plate 51 and a reinforcing plate 52. One end of the blocking plate 51 is connected to the bottom plate 1, and the other end of the blocking plate 51 extends to the spiral blade 4 along the axial direction of the cylindrical structure; the reinforcing plate 52 is connected to the blocking plate 51, and along the circumferential direction of the cylindrical structure, the reinforcing plate 52 is located on one side of the blocking plate 51.

[0031] In the above technical solution, the barrier member 5 is composed of a barrier plate 51 and a reinforcing plate 52. The reinforcing plate 52 is connected to the barrier plate 51 and is located on one side of the barrier plate 51. In this way, the bending strength of the barrier member 5 can be improved, thereby preventing the barrier plate 51 from bending or shaking due to the impact and friction of the material, so that the wear-resistant barrier structure can be more stably installed on the base plate 1.

[0032] Preferably, in the embodiment of the present invention, the blocking plate 51 and the reinforcing plate 52 are integrally formed; or, the blocking plate 51 and the reinforcing plate 52 are welded to each other.

[0033] like Figure 2 As shown, in the embodiment of the utility model, the reinforcing plate 52 is arranged at an angle to the blocking plate 51 , one end of the reinforcing plate 52 is connected to the other end of the blocking plate 51 , and the other end of the reinforcing plate 52 is supported on the bottom plate 1 .

[0034] In the above technical scheme, the reinforcing plate 52 and the blocking plate 51 are arranged at an angle, so that the reinforcing plate 52 can be inclined relative to the bottom plate 1, and along the axis of the cylindrical structure, from the bottom plate 1 to the cylindrical structure, the distance between the reinforcing plate 52 and the blocking plate 51 gradually decreases. In this way, on the one hand, the reinforcing plate 52 can play a guiding role for the material, and reduce the impact of the material on the blocking component 5 to a certain extent, so as to reduce the wear on the blocking component 5; on the other hand, the reinforcing plate 52 can support the blocking plate 51 to prevent the blocking plate 51 from shaking under the impact of the material, thereby reducing the probability of damage to the blocking component 5.

[0035] In one embodiment, the reinforcing plate 52 and the blocking plate 51 may also be arranged in parallel and in close contact with each other. Compared with the blocking plate 51 being arranged alone, this may increase the thickness of the blocking member 5 to increase the bending strength of the blocking member 5 .

[0036] In one embodiment, the reinforcing plate 52 and the blocking plate 51 may also be arranged in parallel, and the blocking member 5 further includes a connecting plate for connecting the reinforcing plate 52 and the blocking plate 51 so that the blocking member 5 forms a U-shaped structure, thereby also increasing the bending strength of the blocking member 5.

[0037] like Figure 2 As shown, in the embodiment of the present invention, a wear-resistant component 6 is provided on the side of the baffle plate 51 away from the reinforcing plate 52. In this way, the baffle plate 51 can be prevented from being worn by materials, so as to increase the wear resistance of the baffle plate 51.

[0038] like Figure 2 As shown, in the embodiment of the present invention, a wear-resistant component 6 is provided on the side of the reinforcing plate 52 that is away from the blocking plate 51. In this way, the reinforcing plate 52 can be prevented from being worn by the material, so as to increase the wear resistance of the reinforcing plate 52.

[0039] Preferably, in the embodiment of the present invention, the wear-resistant component 6 is a wear-resistant ceramic sheet to achieve the anti-wear effect.

[0040] In one embodiment, the wear-resistant component 6 may also be made of metal material.

[0041] like Figure 1As shown, in the embodiment of the utility model, a mounting plate 7 is provided on one side of the bottom plate 1 facing the scraper body 3, and the blocking plate 51 is detachably connected to the mounting plate 7. In this way, a detachable connection between the bottom plate 1 and the blocking plate 51 can be achieved, so as to facilitate replacement and maintenance of the wear-resistant blocking structure.

[0042] Specifically, in the embodiment of the present invention, the spiral scraper further includes a locking member, which passes through the mounting plate 7 and is threadedly connected to the blocking plate 51 to achieve a detachable connection between the blocking plate 51 and the mounting plate 7. Of course, the locking member includes but is not limited to bolts, screws, etc.

[0043] In one embodiment, the spiral scraper may further include a locking bolt and an anti-dropping nut connected to the locking bolt. The locking bolt passes through the mounting plate 7 and the blocking plate 51 and is threadedly connected to the anti-dropping nut.

[0044] Preferably, in an embodiment of the present invention, the bottom plate 1 and the mounting plate 7 are an integral structure, or the bottom plate 1 and the mounting plate 7 are connected by welding.

[0045] like Figure 2 As shown, in the embodiment of the utility model, the wear-resistant barrier structure further includes a connecting member 8 connected to the barrier member 5, and the connecting member 8 is detachably connected to the scraper body 3. In this way, not only can the barrier plate 51 be installed on the bottom plate 1 through the mounting plate 7, but the barrier member 5 can also be connected to the scraper body 3, thereby increasing the installation stability of the barrier member 5.

[0046] Preferably, in the embodiment of the utility model, the spiral scraper further comprises a locking member, which passes through the connecting member 8 and is threadedly connected to the scraper body 3, thereby realizing a detachable connection between the connecting member 8 and the scraper body 3. Of course, the locking member includes but is not limited to bolts, screws, etc.

[0047] like Figure 2 As shown, in an embodiment of the utility model, the connecting member 8 is an arc-shaped connecting plate arranged around the axis of the cylindrical structure, the first end of the arc-shaped connecting plate is connected to the blocking plate 51, the second end of the arc-shaped connecting plate is connected to the reinforcing plate 52, and the connection position between the arc-shaped connecting plate and the scraper body 3 is located between the first end and the second end.

[0048] Through the above arrangement, on the one hand, the connecting member 8 can be fitted with the scraper body 3 to increase the connection area between the connecting member 8 and the scraper body 3, thereby making the connection between the connecting member 8 and the scraper body 3 more stable; on the other hand, the blocking plate 51 and the reinforcing plate 52 are both connected to the scraper body 3 through the arc-shaped connecting plate, so that the purpose of a more secure connection between the scraper body 3 and the blocking member 5 can be achieved.

[0049] Preferably, in the embodiment of the present invention, the connecting member 8, the blocking plate 51 and the reinforcing plate 52 are an integrated structure; or, the connecting member 8 is welded to the blocking plate 51 and the reinforcing plate 52 respectively.

[0050] like Figure 3 and Figure 4 As shown, in the embodiment of the utility model, the spiral scraper of the centrifuge further includes a supporting blade 9 and an anti-wear component 10. The supporting blade 9 is spirally arranged around the cylindrical structure, and along the radial direction of the cylindrical structure, the supporting blade 9 is connected to the end of the spiral blade 4 away from the scraper body 3; the anti-wear component 10 is arranged on the supporting blade 9, and the anti-wear component 10 is located on the side of the supporting blade 9 away from the bottom plate 1.

[0051] In the above technical solution, by arranging supporting blades 9 and anti-wear components 10 on the outer edge of the spiral blade 4, the spiral blade 4 can be protected from wear, thereby reducing the degree of wear of the spiral blade 4 during material transportation, and further improving the wear resistance of the spiral scraper to extend its service life.

[0052] Preferably, in the embodiment of the present invention, the inclination angle A at the edge of the wear-resistant component 10 is 10° to 30°, wherein the inclination angle A is preferably 20°.

[0053] Preferably, in the embodiment of the utility model, the thickness of the spiral blade 4 is 5mm to 15mm, so that the spiral blade 4 can have a certain anti-extrusion strength to support the material and achieve the purpose of weight reduction. Among them, the thickness of the spiral blade 4 is preferably 10mm.

[0054] Preferably, in the embodiment of the present invention, the supporting blade 9 and the spiral blade 4 are connected by welding.

[0055] In one embodiment, the supporting blade 9 and the spiral blade 4 may also be integrally formed.

[0056] like Figure 3 and Figure 5 As shown, in the embodiment of the utility model, a plurality of positioning members 11 are provided on the supporting blade 9, and the plurality of positioning members 11 are arranged at intervals along the spiral direction of the supporting blade 9. The anti-wear component 10 includes a plurality of anti-wear plates, each of which is provided with a positioning groove 12, and the positioning members 11 are positioned and matched with the positioning groove 12.

[0057] In the above technical solution, a positioning piece 11 is provided on the supporting blade 9, and the positioning piece 11 can be positioned and matched with the positioning groove 12 on the anti-wear plate. In this way, it is convenient to install multiple anti-wear plates to the supporting blade 9. The positioning piece 11 and the positioning groove 12 cooperate to increase the contact area between the anti-wear plate and the supporting blade 9, thereby making the connection between the supporting blade 9 and the anti-wear component 10 more firmly.

[0058] Specifically, in the embodiment of the present utility model, the anti-wear sheet is bonded to the supporting blade 9, and two adjacent anti-wear sheets are bonded to each other.

[0059] Specifically, in the embodiment of the utility model, the anti-wear sheet is a wear-resistant ceramic sheet with a thickness of 5 mm to 8 mm. In this way, the wear-resistant effect is achieved while increasing the weight as little as possible. The thickness of the wear-resistant ceramic sheet is preferably 6.5 mm.

[0060] Specifically, in an embodiment of the utility model, a plurality of positioning members 11 are arranged one-to-one corresponding to a plurality of anti-wear plates, and the positioning member 11 includes two protrusions, and the two protrusions are arranged along the radial direction of the cylindrical structure. Each anti-wear plate is provided with two positioning grooves 12 cooperating with the two protrusions to position the plurality of anti-wear plates.

[0061] In one embodiment, two or more positioning grooves 12 can also be set on each anti-wear plate in the circumferential direction of the cylindrical structure. The positioning member 11 includes a plurality of protrusions, and the plurality of protrusions are arranged along the circumferential direction of the cylindrical structure and cooperate with the two or more positioning grooves 12, as long as a plurality of anti-wear plates can be installed on the supporting blade 9.

[0062] In one embodiment, the positioning member 11 may also include a protrusion, and each anti-wear plate is provided with a positioning groove 12, which cooperates with the protrusion.

[0063] Preferably, in the embodiment of the present utility model, the positioning groove 12 includes but is not limited to a circular groove or a rectangular groove and the like.

[0064] It should be noted that the service life of the spiral scraper in the embodiment of the utility model is greatly increased, the wear-resistant barrier structure can protect the base plate, and avoid irreparable damage to the spiral scraper due to damage to the base plate. Moreover, the wear-resistant barrier structure is simple and convenient to replace, and is easy to replace in time to increase the service life of the entire spiral scraper.

[0065] It should be noted that the spiral scraper in the embodiment of the utility model is installed on a large bearing seat, and a screen basket is provided on the outer periphery of the spiral scraper. The bearing seat is used to support the entire spiral scraper and the screen basket. The screen basket and the spiral scraper extend to the product chamber, and the product chamber is installed at the front end of the bearing seat through a large diameter flange.

[0066] An embodiment of the utility model provides a centrifuge, which comprises a body and the above-mentioned spiral scraper of the centrifuge arranged on the body.

[0067] From the above description, it can be seen that the above-mentioned embodiments of the utility model achieve the following technical effects: when the spiral scraper conveys material, the material flowing through the inside of the scraper body to between the spiral scraper and the screen can flow along between two adjacent spiral blades. This embodiment arranges wear-resistant components on the opposite sides of the barrier component, which can improve the wear resistance of the wear-resistant barrier structure. In this way, the barrier component can be protected, thereby preventing the barrier component from being worn through by the material, and preventing the material from moving circumferentially along the scraper body in the interval between the spiral blades and the bottom plate, thereby preventing the material from wearing the bottom plate, so as to protect the bottom plate and avoid irreparable damage to the spiral scraper due to damage to the bottom plate, thereby extending the overall service life of the spiral scraper.

[0068] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A spiral scraper for a centrifuge, characterized in that: include: A bottom plate (1), wherein the bottom plate (1) is provided with a mounting through hole (2); The scraper body (3) is a cylindrical structure with an internal through hole, the cylindrical structure is arranged on the bottom plate (1), the mounting through hole (2) is connected to the internal through hole of the cylindrical structure, a spiral blade (4) is arranged on the outer periphery of the scraper body (3), and along the axial direction of the cylindrical structure, the bottom plate (1) and the spiral blade (4) are arranged at intervals; A wear-resistant barrier structure comprises a barrier component (5) and a wear-resistant component (6), wherein the wear-resistant barrier structure is connected between the spiral blade (4) and the base plate (1), and the wear-resistant components (6) are provided on opposite sides of the barrier component (5) along the circumference of the cylindrical structure.

2. The spiral scraper of the centrifuge according to claim 1, characterized in that: At least one of the scraper body (3) and the base plate (1) is detachably connected to the blocking member (5).

3. The spiral scraper of a centrifuge according to claim 1, characterized in that: The blocking member (5) comprises: a baffle plate (51), one end of the baffle plate (51) being connected to the bottom plate (1), and the other end of the baffle plate (51) extending along the axial direction of the cylindrical structure to the spiral blade (4); A reinforcing plate (52) is connected to the blocking plate (51), and is located on one side of the blocking plate (51) along the circumference of the cylindrical structure.

4. The spiral scraper of the centrifuge according to claim 3, characterized in that: The reinforcing plate (52) and the blocking plate (51) are arranged at an angle, one end of the reinforcing plate (52) is connected to the other end of the blocking plate (51), and the other end of the reinforcing plate (52) is supported on the bottom plate (1).

5. The spiral scraper of a centrifuge according to claim 3, characterized in that: The side of the blocking plate (51) facing away from the reinforcing plate (52) is provided with the wear-resistant component (6); and / or, The wear-resistant component (6) is provided on the side of the reinforcing plate (52) facing away from the blocking plate (51).

6. The spiral scraper for a centrifuge according to claim 3, characterized in that: A mounting plate (7) is provided on one side of the bottom plate (1) facing the scraper body (3), and the blocking plate (51) is detachably connected to the mounting plate (7).

7. The spiral scraper of a centrifuge according to claim 3, characterized in that: The wear-resistant barrier structure further comprises a connecting member (8) connected to the barrier member (5), and the connecting member (8) is detachably connected to the scraper body (3).

8. The spiral scraper for a centrifuge according to claim 7, characterized in that: The connecting member (8) is an arc-shaped connecting plate arranged around the axis of the cylindrical structure, the first end of the arc-shaped connecting plate is connected to the blocking plate (51), the second end of the arc-shaped connecting plate is connected to the reinforcing plate (52), and the connection position between the arc-shaped connecting plate and the scraper body (3) is located between the first end and the second end.

9. The spiral scraper for a centrifuge according to any one of claims 1 to 8, characterized in that: The spiral scraper of the centrifuge also includes: A supporting blade (9) is spirally arranged around the cylindrical structure, and along the radial direction of the cylindrical structure, the supporting blade (9) is connected to an end of the spiral blade (4) away from the scraper body (3); An anti-wear component (10) is arranged on the supporting blade (9), and the anti-wear component (10) is located on a side of the supporting blade (9) facing away from the bottom plate (1).

10. The spiral scraper for a centrifuge according to claim 9, characterized in that: The supporting blade (9) is provided with a plurality of positioning members (11), and the plurality of positioning members (11) are arranged at intervals along the spiral direction of the supporting blade (9); the anti-wear component (10) comprises a plurality of anti-wear sheets, each of the anti-wear sheets is provided with a positioning groove (12), and the positioning members (11) are positioned and matched with the positioning grooves (12).

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