JPS5884389U

JPS5884389U - Rotor in screw compressor or screw blower

Info

Publication number: JPS5884389U
Application number: JP17781081U
Authority: JP
Inventors: 石田　政雄
Original assignee: 北越工業株式会社
Priority date: 1981-12-01
Filing date: 1981-12-01
Publication date: 1983-06-08

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図はスクリュー圧縮機の要部断面図、第２図は、従
来のロータを示すもので、同図Ａは両ロータの噛合状態
を示す断面図、同図Ｂは雄ロータの部分拡大図、第３図
は、従来のロータによるランドと中間溝の噛み合い時に
おける間隙を示す部分拡大図、第４図は本考案の一実施
例を示すロータの断面図である。１０・・・圧縮機、１１．１２・・・端壁、１３・・・
ケーシング、１５・・・軸受等、２０．２１・・・ラン
ド、２２．２３・・・中間溝、２４．２５・・・ロータ
、３゜・・・シールストリップ部、３１・・・間隙、４
０・・・被覆部。２υ　　ｔ１Figure 1 is a sectional view of the main parts of a screw compressor, Figure 2 shows a conventional rotor, Figure A is a sectional view showing the meshing state of both rotors, and Figure B is a partially enlarged view of the male rotor. 3 is a partially enlarged view showing a gap when a land and an intermediate groove are engaged with each other in a conventional rotor, and FIG. 4 is a sectional view of a rotor showing an embodiment of the present invention. 10... Compressor, 11.12... End wall, 13...
Casing, 15... Bearing, etc., 20.21... Land, 22.23... Intermediate groove, 24.25... Rotor, 3°... Seal strip portion, 31... Gap, 4
0... Covering part. 2υ t1

Claims

[Scope of utility model registration request]

(1) A parallel cylinder consisting of two mutually intersecting inner diameters, a casing forming an outer wall of a working space by end walls provided at both ends of the cylinder, and an outer diameter substantially inscribed in the cylinder, and mutually intersecting. A screw compressor or a screw blower comprising two rotors having male and female helical lands journalled in the cylinders so as to mesh with each other, the casing material forming the cylinder at the tips of the helical lands of the male and female rotors. A rotor characterized in that a covering part made of a softer synthetic resin material or a self-lubricating material is fixed by adhesion or welding, and the covering part is replaceable when attached.

(2) The screw compressor or screw compressor according to claim 1, wherein the material of the seal chip is a synthetic resin that becomes softer than the casing material when the casing and rotor come into galling contact. Rotor in a blower. (,3) The seal tip is made of an anti-friction alloy, an oil-impregnated sintered metal,
A rotor for a screw compressor or screw blower according to claim 1, characterized in that the rotor is made of a self-lubricating material such as a carbon material.