A protective device for the solid phase end of a centrifuge drum

Abstract

The present invention discloses a protective device for the solid phase end of a centrifuge drum, comprising a protective sleeve positioned at the solid phase end of the centrifuge drum; wherein the protective sleeve has a plurality of through holes distributed around the circumference, and each through hole corresponds to a plurality of outlets distributed around the circumference of the solid phase end of the drum. This embodiment can solve the problem of abrasion of the solid phase end of the existing centrifuge drum.

Description

Technical Field

[0001] The present invention relates to the field of automated production technology, in particular to a protective device for the solid phase end of a centrifuge drum. Background Art

[0002] A horizontal spiral centrifuge is a type of spiral discharge sedimentation centrifuge. It primarily consists of a high-speed drum, a spiral conveyor with a hollow shaft that rotates in the same direction as the drum but at a slightly lower speed, and a differential. When the slurry to be separated is fed into the drum via the hollow shaft, it is immediately flung into the drum cavity by the centrifugal force generated by the high-speed rotation. The high-speed rotation of the drum generates a powerful centrifugal force that pushes solid particles, which are denser than the liquid phase, against the inner wall of the drum, forming a solid layer (called the solid ring layer because of its ring shape). Water, due to its lower density and the weaker centrifugal force, forms a liquid layer inside the solid ring layer, called the liquid ring layer. Due to the different speeds of the spiral and drum, there is relative motion between them (i.e., a speed difference). This relative motion slowly pushes the solid particles in the solid ring layer to the solid phase end of the drum, where they are continuously discharged through outlets distributed around the solid phase end of the drum. The liquid in the liquid ring layer, by gravity, overflows from the weir at the liquid phase end and flows out of the drum, forming the separated liquid.

[0003] In the process of implementing the present invention, the inventors discovered that the prior art has at least the following problems:

[0004] When the screw conveyor pushes the solid particles in the solid ring layer of the separation chamber inside the centrifuge to the outlets distributed around the solid phase end of the drum for continuous discharge, the slurry produced during the polysilicon production process contains a large amount of metal chloride and polymer. During the hydrolysis treatment in the previous system, a large amount of colloidal material is formed, which has a certain viscosity. This is prone to agglomeration at the solid phase end of the centrifuge discharge port. The current discharge port uses a funnel-shaped discharge pipe to transport the material, which further causes the material to agglomerate and clog at the discharge port. Since the separated solid phase is mostly silicon powder particles, which are harder than metal, when the solid phase end agglomerates due to the viscosity of the material, the silicon powder and the rotor produce friction, gradually wearing away the metal at the solid phase end of the drum, thereby damaging the centrifuge. Summary of the Invention

[0005] In view of this, an embodiment of the present invention provides a protective device for the solid phase end of a centrifuge drum, which can solve the problem of abrasion of the solid phase end of the existing centrifuge drum.

[0006] To achieve the above-mentioned purpose, according to an embodiment of the present invention, a protective device for the solid phase end of a centrifuge drum is provided, comprising a protective sleeve positioned at the solid phase end of the centrifuge drum; wherein the protective sleeve has a plurality of through holes distributed circumferentially, and each through hole corresponds to a plurality of outlets distributed circumferentially at the solid phase end of the drum.

[0007] Optionally, the protective sleeve includes a body and a plurality of key bodies, the key bodies are inserted into through holes distributed around the body, and the protrusions on the key bodies are matched with key grooves processed on the inner edges of the through holes of the body.

[0008] Optionally, the keyway shape processed on the inner edge of the through hole of the body is processed according to the shape of the protrusion on the body.

[0009] Optionally, the method includes machining a 3-4 mm keyway on the inner edge of the through hole of the body using a machine tool.

[0010] Optionally, the gap between the protective sleeve and the solid phase end ring of the drum is controlled to be 2-3 mm.

[0011] Optionally, the method includes: using an adhesive to adhere the protective sleeve to the solid phase end of the drum.

[0012] Optionally, the protective sleeve has a thickness of 3-15 mm.

[0013] Optionally, the method further comprises a discharge pipe installed at the solid phase end of the centrifuge drum.

[0014] Optionally, it includes: the discharge pipe includes a straight pipe, a widened straight pipe and a tapered pipe, the upper end of the straight pipe corresponds to the outlet distributed circumferentially at the solid phase end of the centrifuge drum, the lower end of the straight pipe is inserted into the upper end of the widened straight pipe, the lower end of the widened straight pipe is connected to the tapered pipe, and the width of the widened straight pipe is greater than the width of the straight pipe.

[0015] One embodiment of the above invention has the following advantages or beneficial effects: the present invention effectively solves the abrasion problem caused by the agglomerates and the drum by installing a wear-resistant protective sleeve and a discharge pipe at the solid phase end of the centrifuge drum, so that the centrifuge can operate effectively and stably.

[0016] The further effects of the above-mentioned non-conventional optional manner will be described below in conjunction with specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are provided for a better understanding of the present invention and are not intended to limit the present invention.

[0018] Figure 1 2 is a schematic structural diagram of a centrifuge equipped with a solid phase end protection device for a rotary drum according to an embodiment of the present invention;

[0019] Figure 2 is a schematic diagram of the main body structure of the protective cover according to an embodiment of the present invention;

[0020] Figure 3 is a top view of a key body of a protective cover according to an embodiment of the present invention;

[0021] Figure 4 Schematic diagram of the structure of the discharge pipe at the solid phase end of the centrifuge drum according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The following description of exemplary embodiments of the present invention is made in conjunction with the accompanying drawings, in which various details of the embodiments of the present invention are included to facilitate understanding. These details should be considered as merely exemplary. Therefore, it should be appreciated by those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present invention. Similarly, for the sake of clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description.

[0023] At least one embodiment of the present invention provides a protective device for the solid phase end of a centrifuge drum, the protective device for the solid phase end of a centrifuge drum comprising a protective sleeve positioned at the solid phase end of the centrifuge drum; the protective sleeve has a plurality of through holes distributed circumferentially, each through hole corresponding to a plurality of outlets distributed circumferentially at the solid phase end of the drum.

[0024] As an example, Figure 1 As shown, a solid phase end bearing 3 is installed at the left end of the drum 1, and a liquid phase end bearing 4 is installed at the right end of the drum 1. In addition, a protective sleeve 2 is installed at the solid phase end on the left side of the drum 1. The protective sleeve 2 has multiple through holes distributed around the circumference, each of which corresponds to a plurality of outlets distributed around the circumference of the solid phase end of the drum 1.

[0025] Preferably, the thickness of the protective cover is 3-15 mm. Of course, the thickness of the protective cover can be changed according to the speed of different types of centrifuges.

[0026] In a further embodiment, the protective cover 2 includes a body ( Figure 2 shown) and multiple key bodies ( Figure 3 As shown, the strong body is inserted into the through-holes distributed around the circumference of the main body, and the protrusions on the strong body mate with the keyways machined into the inner edges of the through-holes of the main body. Thus, the strong body on the protective sleeve 2 can be inserted into the outlets distributed around the circumference of the solid phase end of the bowl, so that the protective sleeve 2 is positioned at the solid phase end of the bowl.

[0027] Furthermore, the keyway shape machined into the inner edge of the through hole of the body can be machined according to the shape of the protrusion on the body. Preferably, the 3-4 mm keyway is machined into the inner edge of the through hole of the body. In addition, the protrusion on the body is provided at the end of the body.

[0028] Preferably, the gap between the protective sleeve and the solid phase end of the drum is controlled to be 2-3 mm. Furthermore, the protective sleeve is adhered to the solid phase end of the drum using an adhesive, and the adhesive is cured by a hot air blower to ensure that the protective sleeve and the solid phase end of the drum are fully adhered.

[0029] It can be seen that the protective sleeve prevents direct contact between silicon powder particles and the drum, which could cause abrasion, thereby ensuring stable operation of the centrifuge. Furthermore, the protective sleeve must be precisely machined to fit the circumferentially distributed outlets at the solid phase end of the drum and maintain dynamic balance at different speeds to prevent excessive vibration of the unit due to dynamic balance issues. In other words, the protective sleeve's machining accuracy must ensure a good fit with the solid phase end of the drum, and the through-holes of the protective sleeve must fit tightly during installation.

[0030] It is also worth mentioning that the protective device for the solid phase end of the centrifuge bowl can be made of steel, or other materials according to different needs, so as to more effectively solve the abrasion problem.

[0031] Other embodiments of the present invention provide a protective device for the solid phase end of a centrifuge bowl, such as Figure 4 As shown, the protection device for the solid phase end of the centrifuge drum also includes a discharge pipe installed at the solid phase end of the centrifuge drum.

[0032] In a further embodiment, the feed pipe includes a straight pipe, a widened straight pipe, and a tapered pipe. The upper end of the straight pipe corresponds to the outlets distributed circumferentially at the solid phase end of the centrifuge bowl. The lower end of the straight pipe is inserted into the upper end of the widened straight pipe, and the lower end of the widened straight pipe is connected to the tapered pipe. The width of the widened straight pipe is greater than that of the straight pipe. Thus, the present invention can achieve the technical effect of reducing resistance during material conveying and preventing clogging of the feed pipe due to adhesion and accumulation of sticky materials.

[0033] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may occur depending on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A protective device for the solid phase end of a centrifuge drum, characterized in that: It includes a protective sleeve positioned at the solid phase end of the centrifuge drum and a feed pipe installed at the solid phase end of the centrifuge drum; The protective sleeve has a plurality of through holes distributed around the circumference, and each through hole corresponds to a plurality of outlets distributed around the circumference of the solid phase end of the drum; The protective sleeve comprises a body and a plurality of key bodies, the key bodies are inserted into through holes distributed on the circumference of the body, and the protrusions on the key bodies are matched with key grooves processed on the inner edges of the through holes of the body.

2. The protective device for the solid phase end of the centrifuge drum according to claim 1, characterized in that: include: The keyway shape processed on the inner edge of the through hole of the main body is processed according to the protrusion shape on the key body.

3. The protective device for the solid phase end of the centrifuge drum according to claim 1, characterized in that: include: The inner edge of the through hole of the body is machined with a 3-4 mm keyway.

4. The protective device for the solid phase end of a centrifuge drum according to claim 1, characterized in that: include: The gap between the protective sleeve and the solid phase end ring of the drum is controlled to be 2-3 mm.

5. The protective device for the solid phase end of a centrifuge drum according to claim 1, characterized in that: include The protective sleeve is adhered to the solid phase end of the drum using an adhesive.

6. The protective device for the solid phase end of a centrifuge drum according to claim 1, characterized in that: include: The thickness of the protective sleeve is 3-15 mm.

7. The protective device for the solid phase end of a centrifuge drum according to claim 1, characterized in that: include: The feed pipe includes a straight pipe, a widened straight pipe and a tapered pipe. The upper end of the straight pipe corresponds to the outlets distributed circumferentially at the solid phase end of the centrifuge drum. The lower end of the straight pipe is inserted into the upper end of the widened straight pipe. The lower end of the widened straight pipe is connected to the tapered pipe. The width of the widened straight pipe is greater than that of the straight pipe.

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