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Spindle bearing device of rotary screw rod compressor

A technology of screw compressor and main shaft support, which is applied to parts of pumping devices for elastic fluid, pump parts of rotary piston type/oscillating piston type, mechanical equipment, etc. Problems such as low bearing capacity and poor motion stiffness of roller bearings can achieve the effect of improving running accuracy and its working life, good working stability and improving running accuracy

Active Publication Date: 2010-07-14
NINGBO BAOSI ENERGY EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main shaft support device of CF1000 type rotary screw compressor mentioned above has the advantages of simple structure and convenient installation and adjustment; Its running accuracy and service life

Method used

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  • Spindle bearing device of rotary screw rod compressor
  • Spindle bearing device of rotary screw rod compressor
  • Spindle bearing device of rotary screw rod compressor

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Embodiment Construction

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0018] figure 1 An embodiment of the present invention is shown, which includes a housing 1 configured with a pair of intermeshed rotors; the front end of one of the rotors can be driven by a motor or various internal combustion engines to form the main shaft 2 of the screw compressor, and the other The rotor forms the driven shaft 11 of the screw compressor.

[0019] The rear end of the main shaft 2 is provided with two journal bearing surfaces of different diameters, of which the journal bearing surface of the large diameter is arranged in sequence with heavy-duty radial roller bearings 4 and four-point contact ball bearings 5, while the journal bearing surfaces of small diameter An angular contact ball bearing 9 is arranged on the supporting surface; the outer diameter of the heavy radial roller bearing 4 is fixed in the matching hole of ...

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Abstract

The invention relates to a spindle bearing device of a rotary screw rod compressor, which comprises a shell and a pair of rotors which are mutually meshed, wherein one rotor forms a spindle, and the rear end thereof is provided with two journal bearing surfaces with different diameters, wherein a heavy radial roller bearing and a four-point contact ball bearing are sequentially lined and deployed on the large-diameter journal bearing surface and the outer diameters thereof are fixed on a shell supporting hole, and an angle contact ball bearing is deployed on the small-diameter journal bearing surface; the outer side of the outer diameter of the four-point contact ball bearing is provided with an isolation cover; the outer side of the isolation cover is provided with a butterfly spring; the angle contact ball bearing is arranged on the outer side of the butterfly spring, and is connected with the spindle of the screw rod compressor through a second set nut; the device has the advantages of good structural rigidity and motion rigidity, higher radial and axial integrated bearing capability, and good work stability; and secondly, the operation efficiency is higher, and the operation precision and the service life can be significantly improved.

Description

technical field [0001] The invention relates to the technical field of a compressor main shaft structure, in particular to a rotary screw compressor main shaft support device. Background technique [0002] At present, most of the rotary screw compressors at home and abroad adopt the structure of a pair of intermeshing rotors with a special screw shape installed in a shell; among them, the front end of one rotor is driven by the driving machine to form the main shaft of the screw compressor. , the rear end of the screw compressor main shaft is provided with a main shaft support device; the main shaft support device is used to bear the radial force and axial force under the operating condition of the screw compressor main shaft; therefore, the screw compressor main shaft support device The structure will directly affect the running precision and working life of the screw compressor. [0003] For example, the main shaft support device of the CF1000 rotary screw compressor prod...

Claims

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Application Information

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IPC IPC(8): F04C29/00
Inventor 张炯焱吴常洪陈刚
Owner NINGBO BAOSI ENERGY EQUIP
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