JPH01152084U

JPH01152084U -

Info

Publication number: JPH01152084U
Application number: JP4770388U
Authority: JP
Priority date: 1988-04-11
Filing date: 1988-04-11
Publication date: 1989-10-19

Description

[Brief explanation of the drawing]

第１図は従来の回転ポンプの断面図、第２，６
，７，８図は本案による回転ポンプの断面図、第
３図は第２図の側面図、第４図は第３図の拡大部
分図、第５図は第４図のＡ―Ａ′線断面図、第９
図は第３図の右側の羽根支持体３の回りに本案を
実施した拡大部分図、第１０図は第９図のＢ―Ｂ
′線断面図である。１は雄ローター、２は羽根、３は羽根支持体、
４は羽根外周部、５は固定中空体、６は吐出口、
７は回転中空体、８は開閉口、９は欠円部、１０
は雌ローター、１１は雌ローター外周部、１２は
陥没部、１３は作動室、１４は吸入通路、１５は
回収溝、１６，１６′，１７は導入通路、１８，
２０は連通部、１９，２１は閉鎖部である。 Figure 1 is a sectional view of a conventional rotary pump, Figures 2 and 6 are
, 7, and 8 are cross-sectional views of the rotary pump according to the present invention, FIG. 3 is a side view of FIG. 2, FIG. 4 is an enlarged partial view of FIG. 3, and FIG. Cross section, No. 9
The figure is an enlarged partial view of the blade support 3 on the right side of Figure 3, and Figure 10 is B-B of Figure 9.
FIG. 1 is a male rotor, 2 is a blade, 3 is a blade support,
4 is the outer circumference of the blade, 5 is a fixed hollow body, 6 is a discharge port,
7 is a rotating hollow body, 8 is an opening/closing opening, 9 is a missing circular part, 10
11 is a female rotor outer periphery, 12 is a recessed portion, 13 is an operating chamber, 14 is a suction passage, 15 is a collection groove, 16, 16', 17 is an introduction passage, 18,
20 is a communicating portion, and 19 and 21 are closing portions.

Claims

[Claims for Utility Model Registration] (1) A male rotor having blades that closely surround a fixed hollow body fixed to the outside of the rotating hollow body and rotate integrally with the rotating hollow body, and an inner periphery of the rotor casing. A female rotor outer periphery that is in close contact with the surface and a female rotor that is recessed from the outer periphery of the female rotor and has a recess into which the blades of the male rotor fit are synchronously rotated in opposite directions without contacting each other, The outer peripheral portion of the female rotor is in close contact with a circular cutout formed in the fixed hollow body, and the fluid in the working chamber sandwiched between the blades of the male rotor and the female rotor is the same. After being hermetically compressed by reducing the volume of the working chamber, it is discharged into the rotating hollow body through the discharge port formed in the fixed hollow body and the opening/closing port formed in the rotating hollow body. In the constructed pump, fluid leaked into the gap between the circular notch and the outer circumferential portion of the female rotor is caused to flow into the recovery groove formed in the circular notch, and the fluid that has flowed into the recovery groove is then passed through the introduction passage. and the introduction passage is closed while the collection groove is not covered by the outer circumference of the female rotor. A rotary pump characterized in that the fluid flowing into the recovery groove is prevented from flowing back from the working chamber where it was being discharged. (2) The rotary pump according to claim 1, wherein the fluid flowing into the recovery groove is discharged into the working chamber in which the suction process has already been completed, before the compression process in the working chamber begins. (3) The rotary pump according to claim 2, wherein the working chamber is a recessed portion of the female rotor.