JPS6129082U

JPS6129082U - screw pump

Info

Publication number: JPS6129082U
Application number: JP11341284U
Authority: JP
Inventors: 邦治近藤; 和夫田島
Original assignee: 日本碍子株式会社; 株式会社小坂研究所
Priority date: 1984-07-27
Filing date: 1984-07-27
Publication date: 1986-02-21

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 drawings]

第１図は、本願考案のスクリューポンプの断面図、第２
１は、セラミックスクリューの半裁断面図、第３図は、
従来の金属性スクリューポンプの断面図である。１・・・・・・スクリュー、２・・・・・・ケース、３
・・・・・・シャフト、４・・・・・・．吸込口、５・
・・・・・吐出口、６・・・・・・空間、７′・・・・
・・スクリュー同士の隙間、８・・・・・・スクリュー
とケースとの隙間、９・・・・・・軸受、１０・・・・
・・ライナー、１１・・・・・．・セラミック製スクリ
ュー、Ｗ・・・・・・ピツチ円歯巾、Ｗ２・・・・・・
金属スクリュー歯元山、Ｗ２′・・・・・・セラミック
スクリュー歯元山。Figure 1 is a sectional view of the screw pump of the present invention;
1 is a half-cut sectional view of the ceramic screw, and FIG.
FIG. 2 is a cross-sectional view of a conventional metallic screw pump. 1...screw, 2...case, 3
...Shaft, 4... Suction port, 5.
...Discharge port, 6...Space, 7'...
...Gap between screws, 8...Gap between screw and case, 9...Bearing, 10...
...Liner, 11...・Ceramic screw, W...Pitch circular tooth width, W2...
Metal screw tooth base, W2'...Ceramic screw tooth base.

Claims

[Scope of Claim for Utility Model Registration] 1. A screw pump for transporting liquid, which has one or more screws fitted and fixed to a rotating shaft provided in a case having a suction port and a discharge port, A screwdriver characterized in that one or more screws are made of a ceramic member, and the cross-sectional shape of the tooth profile of the ceramic screw is such that the tooth width at the root of the teeth is wider than the tooth width on the pitch circumference of the teeth. pump. 2. The screw pump according to claim 1, wherein the ceramic screw of the screw pump is made of either zirconia or alumina. 3. The screw pump according to claim 1, wherein the case portion facing one or more ceramic screws inserted into the case of the ceramic screw pump is covered with a ceramic liner. 4. The screw pump according to claim 3, wherein the liner disposed opposite to the ceramic screw of the screw pump is made of either zirconia or halumina.