Lubricating grease for centrifugal pump sliding bearing

A sliding bearing and lubricating grease technology, which is applied in the field of centrifugal pump manufacturing, can solve the problems of large friction loss, easy deterioration of lubricating grease, and difficulty in regular oil supply, etc., achieve low production cost, reduce bearing friction coefficient and surface wear, and prolong service life The effect of longevity

Inactive Publication Date: 2016-02-10
ESKE PUMP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the grease is easy to deteriorate, the friction loss is large, and there is no cooling effect, so it is often used in occasions where the requirements are not high and it is difficult to supply oil frequently, or low-speed heavy loads and infrequent use
The production cost of common lubricating grease is high, and it cannot play a good lubricating effect in harsh environments such as high temperature, heavy load, and strong water spray

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A lubricating grease for a sliding bearing of a centrifugal pump is made of the following raw materials in parts by weight:

[0013] 52 parts of mineral base oil, 20 parts of modified lard, 13 parts of rosin sodium soap, 12 parts of sodium bentonite, 10 parts of rice bran wax, 8 parts of coconut oil fatty acid diethanolamide, 7 parts of cetyl alcohol, hydrogenated styrene diene 6 parts of copolymer, 5 parts of turpentine, 5 parts of anti-oxidant and anti-corrosion agent, 4 parts of N,N'-disalicylidene propylenediamine, 3 parts of maltodextrin.

[0014] Put the above raw materials into the reaction kettle, first heat to 55-60°C and keep stirring for 20 minutes, then continue to heat to 80-85°C and keep stirring for 15 minutes, and then fill it after cooling to room temperature.

[0015] Preparation of modified lard: first heat 92 parts of industrial lard until melted, then add 15 parts of glycerin and 4 parts of nano-alumina, mix evenly, then microwave at microwave frequ...

Embodiment 2

[0018] A lubricating grease for a sliding bearing of a centrifugal pump is made of the following raw materials in parts by weight:

[0019] 55 parts of mineral base oil, 23 parts of modified lard, 15 parts of rosin sodium soap, 14 parts of sodium bentonite, 12 parts of rice bran wax, 10 parts of coconut oil fatty acid diethanolamide, 9 parts of cetyl alcohol, hydrogenated styrene diene 8 parts of copolymer, 6 parts of turpentine, 6 parts of anti-oxidant and anti-corrosion agent, 5 parts of N,N'-disalicylidene propylenediamine, 4 parts of maltodextrin.

[0020] Put the above raw materials into the reaction kettle, first heat to 55-60°C and keep stirring for 20 minutes, then continue to heat to 80-85°C and keep stirring for 15 minutes, and then fill it after cooling to room temperature.

[0021] Preparation of modified lard: first heat 95 parts of industrial lard until melted, then add 18 parts of glycerin and 5 parts of nano-alumina, mix evenly, microwave at microwave frequency...

Embodiment 3

[0024] A lubricating grease for a sliding bearing of a centrifugal pump is made of the following raw materials in parts by weight:

[0025] 60 parts of mineral base oil, 25 parts of modified lard, 16 parts of rosin sodium soap, 15 parts of sodium bentonite, 14 parts of rice bran wax, 10 parts of coconut oil fatty acid diethanolamide, 10 parts of cetyl alcohol, hydrogenated styrene diene 9 parts of copolymer, 7 parts of turpentine, 7 parts of anti-oxidant and anti-corrosion agent, 6 parts of N,N'-disalicylidene propylenediamine, 5 parts of maltodextrin.

[0026] Put the above raw materials into the reaction kettle, first heat to 55-60°C and keep stirring for 20 minutes, then continue to heat to 80-85°C and keep stirring for 15 minutes, and then fill it after cooling to room temperature.

[0027] Preparation of modified lard: first heat 100 parts of industrial lard until it melts, then add 20 parts of glycerin and 5 parts of nano-alumina, mix well, then microwave at microwave fr...

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PUM

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Abstract

The invention discloses a lubricating grease for a centrifugal pump sliding bearing, and relates to the technical field of centrifugal pump manufacturing. The lubricating grease is prepared from the following raw materials in parts by weight: 50-60 parts of mineral base oil, 20-25 parts of modified lard, 13-16 parts of sodium rosin soap, 12-15 parts of sodium bentonite, 10-14 parts of rice bran wax, 7-12 parts of coconut oil fatty acid diethanolamide, 7-12 parts of cetyl alcohol, 6-10 parts of a hydrogenated styrene diene copolymer, 5-8 parts of turpentine oil, 5-8 parts of an oxidation and corrosion inhibitor, 4-7 parts of N, N'-di-salicylidene propanediamine and 3-5 parts of maltodextrin. According to the lubricating grease, mineral base oil and modified lard are used as main raw materials, various functional additives are added in an assistant manner, and the prepared lubricating grease is uniform and transparent and low in manufacturing cost, so that bearing friction coefficients and surface abrasion are greatly reduced, and the service life of the centrifugal pump sliding bearing is prolonged.

Description

Technical field: [0001] The invention relates to the technical field of centrifugal pump manufacturing, in particular to a lubricating grease for a sliding bearing of a centrifugal pump. Background technique: [0002] Sliding bearings refer to bearings that work under sliding friction, and have the characteristics of stable, reliable and noiseless operation. Under the condition of liquid lubrication, the sliding surface is separated by the lubricant without direct contact, which can greatly reduce friction loss and surface wear. Grease is one of the lubricants used in sliding bearings. It is thickened by mixing lubricating oil and various thickeners (such as calcium, sodium, aluminum and other metal soaps). The use of grease creates a thin film that separates the sliding surfaces. The grease seal is simple and does not need to be added frequently, and it is not easy to lose. However, the grease is easy to deteriorate, the friction loss is large, and there is no cooling ef...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/06C10M177/00
Inventor 曹珠明
Owner ESKE PUMP
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