JPH02101087U - - Google Patents

Description

[Brief explanation of the drawing]

Figure 1 is a sectional view of a conventional non-contact rotary pump, Figures 2, 4, 5, 6, and 8 are sectional views of a non-contact rotary pump according to the present invention (however, the rotor is omitted in Figures 6 and 8). Figure 3 is a side view of Figure 2, Figure 7 is a side view of Figure 6.
FIG. 9 is a cross-sectional view taken along the line A-A' in the figure, FIG. 9 is a diagram showing another embodiment of FIG. 7, and FIG. 10 is a diagram showing a method for preventing leakage from the end face of the female rotor. 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, 11 is a female rotor outer periphery, 12 is a recessed part, 13 is a working chamber, 14 is a suction passage, 15,
15' is a space, 16 is a passage, and 17 is a groove.

Claims (1)

[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, and a pump in which the outer circumferential portion of the female rotor is brought into close contact with the fixed hollow body, and further, the fluid in the working chamber sandwiched between the blades of the male rotor and the female rotor causes the volume of the working chamber to be reduced. In the pump configured such that after being hermetically compressed, the male material 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. The fluid flowing into the gap between the cylindrical surface of the blade support fixed to the end surface of the blade of the rotor and the wall surface in close contact with the cylindrical surface of the blade support is collected in the space, and is further collected in the space. A non-contact rotary pump characterized in that the pump is configured to discharge fluid into an operating chamber whose communication with the suction side is cut off. (2) Non-contact rotation according to claim 1 of the utility model registration, in which the fluid collected in the space is discharged into the working chamber where the suction process has already been completed, before the compression process of the working chamber begins. pump. (3) The non-contact rotary pump according to claim 2, wherein the working chamber is a recessed portion of the female rotor. (4) The non-contact rotary pump according to any one of claims 1 to 3, wherein the space is formed at a predetermined position of a wall portion that is in close contact with the cylindrical surface of the blade support. (5) Guide the fluid that has flowed into the space formed at a predetermined position on the wall surface that is in close contact with the cylindrical surface of the blade support to the space behind the blade support, and further communicate this with the suction side. A non-contact rotary pump according to any one of claims 1 to 3, which is a utility model registered and is configured to discharge water into an operation chamber that is blocked.