JPH0280787U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a diagram of a non-contact pump, FIG. 3 is a sectional view of a conventional non-contact pump, and FIGS. 2, 4, 5, and 6 are sectional views of a non-contact pump according to the present invention. 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
1 is a female rotor, 11 is a male rotor outer periphery, 12 is a recessed portion, 13 is an operating chamber, 14 is a suction passage, 15 is a female rotor support, 16 is an occluded body, 17 is an occluded portion, and 18 is a blade outer periphery. Close contact part, 19 is stepped groove, 20
is an introduction passage, and C1, C2, C3, C4, and C5 are lines showing tooth-shaped cross sections.

Claims (1)

[Claims for Utility Model Registration] (1) A male rotor having a plurality of blades that rotates integrally with the rotating hollow body while closely surrounding the fixed hollow body fixed to the outside of the rotating hollow body, and a casing. A female rotor outer peripheral portion that is in close contact with the inner peripheral surface and a female rotor having a recessed portion into which the blades of the male rotor fit while recessing from the female rotor outer peripheral portion rotate synchronously in opposite directions without contacting each other. and the female rotor rotates in close contact with the periphery of an occluded circular body having an occluded circular part having a vane outer circumferential close contact portion with which the outer circumferential portion of the blade of the male rotor is in close contact, and the outer circumferential portion of the female rotor is rotated closely. In addition, the gap between the side surface of the blade of the male rotor blade and the wall surface of the recessed portion of the female rotor is such that even at the closest portion, the outer circumferential portion of the female rotor and the inner circumferential surface of the casing are in close contact with the fixed hollow body. If there is no close contact between the outer circumference of the female rotor and the fixed hollow body, the outer circumference of the blade of the male rotor and the It is constructed so that there is a part that is in close contact or almost close contact with the outer peripheral close contact part of the blade, and furthermore, paying attention to the working chamber sandwiched between the male rotor blade and the female rotor, A non-contact pump characterized in that the fluid is discharged into the rotating hollow body through a discharge port formed in the fixed hollow body and an opening/closing port formed in the rotating hollow body. (2) In the process of discharging the fluid in the working chamber to the outside after the moment when the leading end of the wall on the advancing side of the depressed portion of the female rotor separates from the inner peripheral surface of the casing,
2. The non-contact pump according to claim 1, which discharges air through a discharge port of a fixed hollow body for at least a medium period. (3) Fluid flows into the space between the advancing side wall of the female rotor's recess and the male rotor's blades fitted into the recess through the introduction passage formed in the truncated circular body. A non-contact pump according to claim 1 or 2 of the utility model registration claim, which incorporates the following. (4) The non-contact pump according to claim 3 of the utility model registration, wherein the fluid is introduced into the introduction passage through the recessed part of the female rotor into which the blades are not fitted. (5) The non-contact pump according to claim 3 or 4 of the utility model registration claim, wherein the introduction path is groove-shaped.