JPS61144283U

JPS61144283U -

Info

Publication number: JPS61144283U
Application number: JP2649085U
Authority: JP
Priority date: 1985-02-27
Filing date: 1985-02-27
Publication date: 1986-09-05

Description

[Brief explanation of the drawing]

第１，２図は従来の非接触ポンプの図、第３，
５図は本案による非接触ポンプの図、第４図は羽
根の図、第６図は陥没部の遅れ側の部分の外周部
との交わり部により創成される線の図である。１は羽根、２は羽根支持体、３は欠円体、４は
ポンプ室、５は雌ローター、６は外周部、７は陥
没部、８はローターケーシング、９は吸入通路、
１０は吐出通路、１１，１２は溝、１３は欠円部
、１４は密接面、１５は放出通路、１６は節部、
１′は羽根外周部、ｃ_１，ｃ_２，ｌ_１，ｌ_２は線
である。 Figures 1 and 2 are diagrams of conventional non-contact pumps, Figure 3,
FIG. 5 is a diagram of a non-contact pump according to the present invention, FIG. 4 is a diagram of a vane, and FIG. 6 is a diagram of a line created by the intersection of the lagging side portion of the depression with the outer circumference. 1 is a blade, 2 is a blade support body, 3 is an occluded body, 4 is a pump chamber, 5 is a female rotor, 6 is an outer peripheral part, 7 is a recessed part, 8 is a rotor casing, 9 is a suction passage,
10 is a discharge passage, 11 and 12 are grooves, 13 is a missing circular portion, 14 is a close contact surface, 15 is a discharge passage, 16 is a joint,
1' is the outer periphery of the blade, and c ₁ , c ₂ , l ₁ , and l ₂ are lines.

Claims

[Claims for Utility Model Registration] (1) A female rotor having an outer circumferential portion that is in close contact with the inner circumferential surface of the rotor casing and a depressed portion that is depressed from the outer circumferential portion, and a blade that fits into the depressed portion of the female rotor. A pump in which a male rotor and a male rotor synchronously rotate in opposite directions in a non-contact state; In a pump configured such that the blades of the rotor rotate, and in which the pump chamber communicates with the discharge passage without reducing its volume, the blade is in close contact with the outer peripheral part of the blade, which is in close contact with the inner peripheral surface of the rotor casing. a surface is formed in the recessed part of the female rotor, and when the blades of the male rotor are fitted into the recessed part of the female rotor, a gap between the blade and the other part of the recessed part other than the close contact surface is formed. Further, at the moment when the intersection of the advancing side portion of the recessed portion with the outer peripheral portion leaves the leading end of the missing circular portion, the outer peripheral portion of the blade is brought into close contact with the recessed portion. The blades are in close contact with each other, and at the moment when the blade outer circumferential portion of the blade separates from the close contact surface of the recessed portion, the intersection of the lagging side portion of the recessed portion with the outer circumferential portion reaches the lagging end of the missing circular portion. 1. A non-contact pump characterized in that the non-contact pump is configured such that the missing circular portion is completely covered by the blade. (2) By forming a discharge passage in the notch body with an opening formed near the leading end of the notch part, the gas in the space between the notch part and the blade can be removed from the discharge passage. into a sealed pump chamber that does not communicate with the discharge passage, and the communication between this pump chamber and the discharge passage is established by the intersection of the lagging side part of the recessed part with the outer circumference of the female rotor. The non-contact pump according to claim 1, which is configured to shut off near the time when the delayed end of the missing circular portion is reached.