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Corrosion-resistant spray nozzle of vacuum pump

A vacuum pump, corrosion-resistant technology, used in pumps, jet pumps, non-displacement pumps, etc., can solve the problems of shortening the service life of vacuum pumps, being susceptible to corrosion, corroding steam nozzles, etc., to improve the use value, short working cycle, economical The effect of increased income

Inactive Publication Date: 2017-05-10
ANHUI NANFANG CHEM PUMP IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Our commonly used vacuum pumps are steam eruption vacuum pumps, which use supersaturated water vapor as the working medium. Wet steam not only affects the function of the pump, but also corrodes the steam nozzle. The nozzle is an important part that affects the performance of the vacuum pump and is also the main factor that affects the life of the vacuum pump. One of the factors, and the material of the current vacuum pump is easily corroded, which seriously shortens the service life of the vacuum pump

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A corrosion-resistant vacuum pump nozzle, its composition by weight percentage is: 13.2% silicon, 1.3% titanium, 1.1% niobium, 0.7% rhodium, 0.6% chromium, 0.4% antimony, 0.32% yttrium, 0.24% scandium, 0.16 rhenium %, cobalt 0.11%, ruthenium 0.05%, and the rest is aluminum.

[0020] A method for preparing a corrosion-resistant vacuum pump nozzle, specifically comprising the following steps:

[0021] (1) Put waste aluminum and silicon dioxide into the furnace, heat up to 2500°C at 90°C / hour, stir and melt, keep warm for 90 minutes, remove slag, and obtain aluminum-silicon melt;

[0022] (2) Add the remaining raw materials into the aluminum-silicon melt, stir for 30 minutes, cool down to 1400°C at 120°C / hour, keep warm for 60 minutes, remove slag, add refining agent, keep warm and stir for 40 minutes, stand still for 90 minutes, and remove slag, to obtain material casting liquid;

[0023] (3) Pour the material casting liquid into the nozzle mold for casting and reinforc...

Embodiment 2

[0031] A corrosion-resistant vacuum pump nozzle, its composition by weight percentage is: silicon 13.6%, titanium 1.4%, niobium 1.2%, rhodium 0.8%, chromium 0.7%, antimony 0.45%, yttrium 0.34%, scandium 0.26%, rhenium 0.17% %, cobalt 0.12%, ruthenium 0.06%, and the rest is aluminum.

[0032] Preparation method, with embodiment 1.

Embodiment 3

[0034] A corrosion-resistant vacuum pump nozzle, its composition by weight percentage is: silicon 14.1%, titanium 1.5%, niobium 1.3%, rhodium 0.9%, chromium 0.8%, antimony 0.5%, yttrium 0.37%, scandium 0.28%, rhenium 0.18% %, cobalt 0.13%, ruthenium 0.07%, and the rest is aluminum.

[0035] Preparation method, with embodiment 1.

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PUM

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Abstract

The invention relates to the technical field of vacuum pumps, and discloses a corrosion-resistant spray nozzle of a vacuum pump. The corrosion-resistant spray nozzle comprises the following components in percentage by weight: 13.2 to 14.1% of silicon, 1.3 to 1.5% of titanium, 1.1 to 1.3% of niobium, 0.7 to 0.9% of rhodium, 0.6 to 0.8% of chromium, 0.4 to 0.5% of antimony, 0.32 to 0.37% of yttrium, 0.24 to 0.28% of scandium, 0.16 to 0.18% of rhenium, 0.11 to 0.13% of cobalt, 0.05 to 0.07% of ruthenium, and the balance of aluminum. The corrosion-resistant spray nozzle has the advantages that the preparation is simple, the working efficiency is increased by 17.3%, and the economic income is increased by 13.6%; the rich raw materials are provided, the acid and alkaline corrosion-resistant property and the high temperature-resistant property are realized after reinforcing and passivating treatment, the surface is smooth, the color and luster is uniform, the sealing property is good, the service life of the vacuum pump is prolonged by 18.2%, and the use value of the vacuum pump is obviously increased; by adding chitosan and peanut shell extract into a passivating liquid, the antibacterial and anti-oxidizing properties of the spray nozzle are improved.

Description

technical field [0001] The invention mainly relates to the technical field of vacuum pumps, in particular to a corrosion-resistant vacuum pump nozzle. Background technique [0002] Vacuum pumps refer to devices or equipment that use mechanical, physical, chemical or physicochemical methods to pump air from the pumped container to obtain vacuum. According to the working principle of vacuum pumps, they can basically be divided into two types, namely gas capture pumps and Gas transmission pump, which is widely used in metallurgy, chemical industry, food, electronic coating and other industries. [0003] Our commonly used vacuum pumps are steam eruption vacuum pumps, which use supersaturated water vapor as the working medium. Wet steam not only affects the function of the pump, but also corrodes the steam nozzle. The nozzle is an important part that affects the performance of the vacuum pump and is also the main factor that affects the life of the vacuum pump. One of the factor...

Claims

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Application Information

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IPC IPC(8): C22C21/02B22D21/04C23C22/47F04F5/46F04F5/20
CPCC22C21/02B22D21/04C23C22/47F04F5/20F04F5/46
Inventor 潘耀东
Owner ANHUI NANFANG CHEM PUMP IND
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