Silicon nitride ceramic impeller framework fixing structure

Abstract

The utility model provides a silicon nitride ceramic impeller framework fixing structure which comprises an upper impeller framework body and a lower impeller framework body. A plurality of positioning grooves are uniformly formed in the surface of the lower impeller framework body in sequence; the bottom of the silicon nitride ceramic impeller is clamped and matched with the positioning groove; wherein the upper impeller framework body and the lower impeller framework body are fixed through welding. The impeller framework has the advantages that a conventional impeller framework body integrated mechanism is broken through, the impeller framework body is divided into the upper section and the lower section, meanwhile, the silicon nitride ceramic front cover plate is added, the limitation of an original impeller framework is solved, challenges on ceramic products under the working condition of strong torsion are overcome, and the service life of the impeller framework is prolonged. And the adaptability of the novel ceramic impeller to extreme working conditions is greatly improved.

Description

Technical Field

[0001] This utility model relates to the impeller of a slurry pump, and more particularly to a silicon nitride ceramic impeller frame fixing structure. Background Technology

[0002] Although ceramic impellers have strong wear resistance, they are easily broken under the high torque conditions of sudden stop and start. In order for ceramic impellers to be used in this condition, it is imperative to strengthen the structural support. Summary of the Invention

[0003] To address the aforementioned issues, this invention discloses a silicon nitride ceramic impeller frame fixing structure, breaking through the limitations of the original sintered ceramic impeller frame and overcoming the challenges posed to ceramic products under high torque conditions, thus greatly improving the adaptability of the new ceramic impeller to extreme conditions.

[0004] A silicon nitride ceramic impeller frame fixing structure includes an upper impeller frame body and a lower impeller frame body; wherein a plurality of positioning grooves are evenly arranged on the surface of the lower impeller frame body; the bottom of the silicon nitride ceramic impeller fits into the positioning grooves; wherein the upper impeller frame body and the lower impeller frame body are fixed together by welding.

[0005] Furthermore, a silicon nitride ceramic front cover plate is installed on the top of the upper impeller frame body to block the metal frame from contacting the corrosive medium.

[0006] Furthermore, a silicon nitride ceramic back cover plate is installed on the top of the lower impeller frame body.

[0007] Furthermore, both the upper impeller frame and the lower impeller frame are made of stainless steel.

[0008] Furthermore, the number of positioning slots is five.

[0009] This utility model breaks away from the conventional one-piece impeller frame body structure, splitting it into upper and lower sections, and adding a silicon nitride ceramic front cover plate.

[0010] During processing, the bottom of the silicon nitride ceramic impeller is first engaged and positioned with the positioning groove on the lower impeller frame body. Then, the upper impeller frame body and the lower impeller frame body are welded together. Finally, the silicon nitride ceramic front cover plate and the silicon nitride ceramic rear cover plate are installed respectively.

[0011] The beneficial effects of this utility model are as follows: It breaks away from the conventional one-piece impeller frame structure, splitting it into upper and lower sections, and adding a silicon nitride ceramic front cover plate, which solves the limitations of the original impeller frame, overcomes the challenges of ceramic products under high torque conditions, and greatly improves the adaptability of the new ceramic impeller to extreme working conditions. Attached Figure Description

[0012] Figure 1 A schematic diagram of the structure of this utility model;

[0013] Figure 2 A bottom-view perspective view of this utility model;

[0014] Figure 3 A bottom view of this utility model;

[0015] Figure 4 ,for Figure 3 Cross-sectional view along direction AA;

[0016] List of reference numerals in the attached diagram:

[0017] 1-Upper impeller frame body; 2-Lower impeller frame body; 3-Positioning groove; 4-Silicon nitride ceramic impeller; 5-Silicon nitride ceramic front cover plate; 6-Silicon nitride ceramic rear cover plate. Detailed Implementation

[0018] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, and the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0019] The silicon nitride ceramic impeller frame structure includes an upper impeller frame body 1 and a lower impeller frame body 2; wherein a plurality of positioning grooves 3 are evenly arranged on the surface of the lower impeller frame body 2; the bottom of the silicon nitride ceramic impeller 4 is fitted with the positioning grooves 3; wherein the upper impeller frame body 1 and the lower impeller frame body 2 are fixed together by welding.

[0020] The top of the upper impeller frame body 1 is equipped with a silicon nitride ceramic front cover plate 5; the top of the lower impeller frame body 1 is equipped with a silicon nitride ceramic rear cover plate 6.

[0021] Both the upper impeller frame body 1 and the lower impeller frame body 2 are made of stainless steel, which increases the strength of the structure.

[0022] The first step is to individually fire and mold all the ceramic parts, including the impeller body, front cover plate, and rear cover plate. The second step is to assemble the metal frame. First, install the rear cover plate frame, and then weld the front cover plate frame and the rear cover plate frame to form a complete structural support. Finally, cover the exposed metal parts with the cover plate to achieve structural reinforcement and wear and corrosion resistance.

[0023] The technical means disclosed in this invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features.

Claims

1. A silicon nitride ceramic impeller skeleton fixing structure, characterized by: It comprises an upper impeller framework body (1) and a lower impeller framework body (2); wherein the surface of the lower impeller framework body (2) is uniformly arranged with a plurality of positioning grooves (3) in sequence; the bottom of a silicon nitride ceramic impeller (4) is adapted by clamping with the positioning grooves (3); wherein the upper impeller framework body (1) and the lower impeller framework body (2) are fixed by welding.

2. The silicon nitride ceramic impeller skeleton fixing structure according to claim 1, characterized in that: The top of the upper impeller framework body (1) is provided with a silicon nitride ceramic front cover plate (5).

3. The silicon nitride ceramic impeller skeleton fixing structure according to claim 1, characterized in that: The top of the lower impeller framework body (2) is provided with a silicon nitride ceramic rear cover plate (6).

4. The silicon nitride ceramic impeller skeleton fixing structure according to claim 1, characterized in that: The upper impeller framework body (1) and the lower impeller framework body (2) are both made of stainless steel.

5. The silicon nitride ceramic impeller skeleton fixing structure according to claim 1, characterized in that: The number of the positioning grooves (3) is five.

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