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Anticorrosive wear-resistant centrifugal pump volute casing

A centrifugal pump and volute technology, applied in the field of corrosion-resistant and wear-resistant centrifugal pump casings, can solve problems such as difficulty in forming and processing, and achieve the effects of high cost performance, prolonging maintenance period and reducing manufacturing costs.

Inactive Publication Date: 2012-03-14
宜兴市宙斯泵业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In today's highly developed science, although the aforementioned problems seem simple, they have not achieved low-cost breakthroughs.
And due to the unresolved lining method, some high-performance materials (such as glass-ceramics, silicon carbide, etc.) that have good wear resistance but are difficult to form and process have not been effectively used as linings for wear-resistant centrifugal pumps so far.

Method used

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  • Anticorrosive wear-resistant centrifugal pump volute casing
  • Anticorrosive wear-resistant centrifugal pump volute casing
  • Anticorrosive wear-resistant centrifugal pump volute casing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1: see Figure 5 -8. The volute of the corrosion-resistant and wear-resistant centrifugal pump of the present invention ， It includes a plastic volute 4 with an opening on one side and a complete liquid outlet pipe section formed by an asymmetrical side section. A metal embedded part 8 for connection is pre-embedded in the plastic volute, and there is a shaft hole on the bottom of the volute. The outer circumference of the lining aluminum oxide cap-shaped inlay 5 is slightly smaller than the inner wall of the volute, the surrounding wall has a liquid outlet 9 and no pipe section of the liquid outlet, and the bottom surface has a shaft hole 7, and the ceramic inlay is inserted into the rear end of the volute from the opening side of the volute Shrink the end face of the volute by 2mm. 6.1 ( Image 6 ), after the ceramic inlay is embedded in the plastic volute, a castable solid material (such as cement mortar) filled with solid mineral particles is poured in the...

Embodiment 2

[0035] Example 2: see Figure 10 , as mentioned above, the thickness of the surrounding surface of the plastic volute 4 is axially inward, and the pressure-resistant (pull) metal squirrel cage skeleton pressure-bearing support 12 with connecting nuts 11 is embedded in the bottom surface, which is for the axial alignment when the pump is assembled and clamped. Provide rigid anti-compression support to the clamping force, which can prevent the compression deformation of the volute when the pump cover is assembled, enhance the anti-deformation performance of the plastic volute, and improve the structural strength and mechanical stability. The axial width of the squirrel cage framework is slightly smaller than that of the pump casing, so that it is retracted into the plastic pump casing to prevent the transmission medium from corroding the metal support.

Embodiment 3

[0036] Embodiment 3: see Figure 11 , as in Example 1, wherein the centrifugal pump volute is a plastic-lined volute with a metal casing 1 lined with a plastic layer 13, and the ceramic wear-resistant inlay 5 as in Example 1 is inlaid in the plastic-lined layer.

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Abstract

The invention relates to an improved anticorrosive wear-resistant centrifugal pump volute casing, which is characterized in that: a pump casing an all-plastic or plastic-lined pump casing, and a sectioning pump casing is a volute casing which is formed by asymmetrically lateral sectioning and provided with a complete liquid outlet pipe section; an integral wear-resistant inlay is in a shape of a cover or basis which is provided with a liquid outlet hole and not provided with a liquid outlet pipe section and is provided with a through axle hole at the bottom; an involution end surface of a lining in the volute casing does not exceed an involution end surface of the volute casing; and a casting-type hardened combining layer is arranged between the volute casing and the wear-resistant inlay. By adoption of the structure and the lining mode, the lining manufacturing difficulty of ceramics, microcrystal glass and the like which are low in cost and difficult to mold is greatly decreased, the manufacturing cost is reduced, the lining is simple, the two historic difficulties of lining body molding and manufacturing and easiness of crazing of high-brittleness lining body during installation and maintenance are solved with low cost, the comprehensive service life is prolonged by more than one time, the overall cost is higher than that of the original all iron pump casing lining ceramic inlay. The invention creates a precedent that the silicon carbide and microcrystal glass materials which are difficult to mold and machine, high in brittleness and extremely good in abrasive resistance are applied to a wear-resisting lining of a centrifugal pump.

Description

technical field [0001] The invention is an improvement to the corrosion-resistant and wear-resistant centrifugal pump casing, and particularly relates to a corrosion-resistant and wear-resistant centrifugal pump with simple structure, convenient lining production, simple assembly, manufacturing cost not higher than the existing corrosion-resistant and wear-resistant centrifugal pump, and high cost performance. Pump volute. Background technique [0002] Ordinary corrosion-resistant and wear-resistant centrifugal pump casings widely used in industry are extremely particular about product prices and operating consumption costs, which have largely become the primary considerations for pump selection. Existing uses such as wet smelting and leaching sections, pumping corrosive solid-containing slurry with both corrosion-resistant and wear-resistant centrifugal pumps, from the perspective of economy, most of them adopt the form of ceramic inserts with linings inlaid in metal pump c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/42F04D29/02
Inventor 蒋龙福闵锡君
Owner 宜兴市宙斯泵业有限公司
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