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Low-temperature deep cooling bearing

A low-temperature cryogenic, ball bearing technology, used in ball bearings, bearing components, shafts and bearings, etc., can solve the problem that bearings are not suitable for high-speed refrigerator equipment, etc., and achieve long service life, strong load capacity, and improved service life. Effect

Active Publication Date: 2012-09-19
WUXI NO 2 BEARING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Bearings must have certain lubricating conditions when running at high speed. Usually, the lubricating economy of bearings is lubricated with oil or grease. Due to low temperature conditions, no grease or lubricating oil can have a normal lubricating function under this condition. Therefore, Ordinary bearings are not suitable for high-speed refrigerator equipment

Method used

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Embodiment Construction

[0015] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0016] Figure 1~Figure 4 , including outer ring 1, inner ring 2, rolling element 3, cage 4, ball lock 5, rib 6, raceway 7, rib 8, rib 9, raceway 10, cylindrical surface 11, lock Ball hole 12, lock ball mouth 13 etc.

[0017] Such as figure 1 As shown, the present invention is a low-temperature cryogenic ball bearing for high-speed freezing equipment, especially for liquid nitrogen pumps therein, including an outer ring 1 , an inner ring 2 , rolling elements 3 and a cage 4 .

[0018] The outer ring 1 and the inner ring 2 are made of stainless steel, preferably 9Cr18 stainless steel, which can prevent the bearing from rusting in a low-temperature and cryogenic environment. The raceway 7 of the outer ring 1 and the raceway 10 of the inner ring 2 are super-finished and treated with tungsten disulfide surface, so that the bearing has a self-l...

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Abstract

The invention relates to high-speed refrigeration equipment, in particular to a low-temperature deep cooling bearing which is applied to a liquid nitrogen pump. The low-temperature deep cooling bearing comprises an outer ring, an inner ring, a rolling body and a retainer; the outer ring and the inner ring adopt stainless steel materials; a rolling path of the outer ring and a rolling path of the inner ring are both sequentially subjected to superfinishing and tungsten disulfide surface treatment; the rolling body is a ceramic ball; and the retainer adopts a PEEK (polyether-ether-ketone) material. According to the low-temperature deep cooling bearing, the outer ring and the inner ring adopt the stainless steel materials, the rolling body adopts the ceramic ball, and the retainer adopts the PEEK material, so that the bearing can meet requirements on shape change and rust prevention under deep cooling condition; and the rolling paths of the inner and outer rings are sequentially subjected to the superfinishing and the tungsten disulfide surface treatment, so that the bearing has self-lubricating function, and the service life of the bearing under low temperature condition can be prolonged.

Description

technical field [0001] The invention relates to a bearing, in particular to a low-temperature cryogenic ball bearing used in high-speed freezing equipment. Background technique [0002] The temperature of liquid nitrogen is below -186°C, which is the best medium for high-speed cryogenic and quick-freezing. High-speed cryogenic equipment is generally used for rapid refrigeration, quick freezing, product cold treatment, mechanical installation, etc. Its working principle is to pump liquid nitrogen into the evaporator through a liquid nitrogen pump, and then suck the vaporized nitrogen into the compression pump. High-speed operation does not stop working, so as to realize the function of refrigeration. The liquid nitrogen pump is the heart of the refrigeration equipment and the mechanical device for processing liquid nitrogen, and the bearing used in the liquid nitrogen pump is the heart of the liquid nitrogen pump. Because the temperature of liquid nitrogen is extremely low,...

Claims

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Application Information

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IPC IPC(8): F16C19/02F16C33/62F16C33/64F16C33/32F16C33/44
Inventor 谭义银
Owner WUXI NO 2 BEARING
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