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Split impeller for large single-shell slurry pump

A single-shell, slurry pump technology, which is applied to the components, pumps, and pump components of pumping devices for elastic fluids, which can solve engineering costs and maintenance waste, limited corrosion resistance, and harsh operating conditions. and other problems, to achieve excellent mechanical properties, good exhaust effect, and improve service life.

Inactive Publication Date: 2018-12-18
SANLIAN PUMP IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Slurry pump is a kind of solid-liquid two-phase flow pump. Because of its harsh working conditions, in order to improve its wear resistance in engineering applications, the flow-passing parts are made of excellent wear-resistant alloys. The abrasiveness is limited, and the flow-passing parts usually have to be replaced within 1-2 months, and even the service life of the flow-passing parts under strong abrasive conditions is less than half a month, which wastes engineering costs and maintenance
[0003] At present, domestic large-scale slurry pumps are mainly imported according to resistance. Imported slurry pump products are not only expensive, but also have a long lead time for accessories, which often delays production. Therefore, research and development of large-scale slurry pump products improve wear resistance and corrosion resistance, and stable operation Slurry pump products with low maintenance cost play a positive role in promoting my country's energy conservation and emission reduction, protection of resources and ecological environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as figure 1 and figure 2 As shown, a split impeller for a large single-case slurry pump includes an impeller body 1, and one end surface of the impeller body 1 close to the pump shaft is provided with a positioning table 2 for positioning and matching with the impeller hub 3, and the impeller hub The disk 3 is embedded in the positioning table 2 and connected and fixed via the connecting piece 5 .

[0042] At present, domestic large-scale slurry pumps are mainly imported according to resistance. Imported slurry pump products are not only expensive, but also have a long lead time for accessories, which often delays production. Therefore, research and development of large-scale slurry pump products can improve wear resistance and corrosion resistance, and run stably Slurry pump products with low maintenance costs play a positive role in promoting energy conservation and emission reduction, resource protection and ecological environment protection in my country. The...

Embodiment 2

[0057] The content of this example is basically the same as that of Example 1, and the similarities will not be repeated. The difference is that the coating slurry includes the following components: 20-35 kg of polyvinylpyrrolidone, 42-54 kg of nanoparticles, High temperature adhesive 30~35kg, surfactant 3~8kg, dispersant 1~2kg,

[0058] The high temperature adhesive is Na 2 O.3.1 SiO 2 Mixed thick colloidal solution with 10-25% epoxy acrylate;

[0059] Surfactant is fatty alcohol polyoxyethylene-3 ether;

[0060] The dispersant is calcium lignosulfonate;

[0061] The nanoparticles include: nano-Al accounting for 30-45% by weight of the nanoparticles 2 o 3 , 50-60% nano-TiC, 10-26% nano-SiO 2 ;

[0062] The coating slurry is prepared through the following steps: put polyvinylpyrrolidone, nanoparticles, dispersant, high-temperature adhesive and surfactant into the disperser to disperse at a line speed faster than 16m / s, and the dispersion time is 20 ~30 minutes, the tem...

Embodiment 3

[0064] As shown in the figure, the structure of this embodiment is basically the same as that of Embodiment 2, and the similarities will not be repeated. The difference is: (4) The quenching and tempering process is adopted, and the heating rate is controlled at 32-35 °C / h, in the temperature range of 600-650°C, step-wise heat preservation for 1-2 hours, quenching temperature of 900-1100°C, heat preservation time of 1-3 hours; tempering temperature of 750°C, heat preservation time of 3-5 hours.

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Abstract

The invention relates to the technical field of slurry pumps, in particular to a split impeller for a large single-shell slurry pump. The split impeller comprises an impeller body. A positioning tableused for being in positioning fit with an impeller hub disc is arranged on the end face, close to a pump shaft, of the impeller body. The impeller hub disc is embedded into the positioning table andconnected and fixed through a connecting piece. In this way, according to the split impeller for the large single-shell slurry pump, the casting performance of the impeller can be improved, casting ismore facilitated through the shape of the split impeller body, the weight of materials of the impeller body is also decreased, the production cost of an enterprise is lowered, the split impeller bodyis convenient to machine and low in weight, the production cost of the enterprise is effectively lowered, the overall strength of the impeller is improved after assembling, the service life of the impeller is prolonged, parts have universality, and thus the split impeller has the advantages of simple structure and high efficiency.

Description

Technical field: [0001] The invention relates to the technical field of slurry pumps, in particular to a split impeller for a large single-case slurry pump. Background technique: [0002] Slurry pump is a kind of solid-liquid two-phase flow pump. Because of its harsh working conditions, in order to improve its wear resistance in engineering applications, the flow-passing parts are made of excellent wear-resistant alloys. The abrasiveness is limited, and the flow-passing parts usually have to be replaced within 1-2 months, and even the service life of the flow-passing parts under strong abrasive conditions is less than half a month, which wastes engineering costs and maintenance [0003] At present, domestic large-scale slurry pumps are mainly imported according to resistance. Imported slurry pump products are not only expensive, but also have a long lead time for accessories, which often delays production. Therefore, research and development of large-scale slurry pump produc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/22F04D29/62F04D29/08
CPCF04D29/086F04D29/2222F04D29/628
Inventor 孙国政
Owner SANLIAN PUMP IND CO LTD
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