JPH0269083U

JPH0269083U -

Info

Publication number: JPH0269083U
Application number: JP14758088U
Authority: JP
Priority date: 1988-11-14
Filing date: 1988-11-14
Publication date: 1990-05-25

Description

[Brief explanation of the drawing]

第１，２図は従来の非接触ポンプの断面図、第
３，６，７図は本案による非接触ポンプの吸入装
置を示す図、第４，５図は本案におけるローター
２の側面図。１，２はローター、３は基準円筒面、４は羽根
、５は羽根外周部、６は羽根嵌り込み部、７は固
定中心体、８は吐出口、９は作動室、１０は吸入
通路、１１は補助吸入通路、１２は連絡通路であ
る。 1 and 2 are sectional views of a conventional non-contact pump, 3, 6 and 7 are views showing a suction device of the non-contact pump according to the present invention, and 4 and 5 are side views of the rotor 2 according to the present invention. 1 and 2 are rotors, 3 is a reference cylindrical surface, 4 is a blade, 5 is a blade outer periphery, 6 is a blade fitting part, 7 is a fixed center body, 8 is a discharge port, 9 is a working chamber, 10 is a suction passage, 11 is an auxiliary suction passage, and 12 is a communication passage.

Claims

[Claims for Utility Model Registration] (1) Each rotor has a reference cylindrical surface, a blade fitting portion that has a depressed portion from the reference cylindrical surface and communicates with the outer circumference of the blade, and the blade fitting portion The rotors, each configured to have one blade protruding from the reference cylindrical surface while adjacent to the recessed portion, rotate in opposite directions synchronously in a non-contact state, and each rotor has a reference cylindrical surface. The pump is configured such that the cylindrical surfaces are in close contact with each other, and the rotor on the fixed center body side rotates closely around the fixed center body, and further, each rotor and casing Paying attention to the formed working chamber, the fluid in the working chamber sucked in from the suction passage having an opening opening on the inner circumferential surface of the casing is formed in the rotor blade fitting part on the fixed center body side and in the fixed center body. In the pump configured to discharge into the fixed center body through the discharge port, the rotor that meshes with the rotor on the fixed center body side is focused, and the fluid flowing through the auxiliary suction passage formed inside the rotor is A suction device for a non-contact pump, characterized in that suction is sucked into the working chamber through the blade fitting portion of the rotor. (2) In the close contact area between the reference cylindrical surfaces of each rotor, so that the suction passage having an opening on the inner peripheral surface of the casing flows smoothly toward the space on the rotor side on the fixed center body side of the working chamber. A suction device for a non-contact pump according to claim 1, which is a suction passage having a streamline oriented at a considerable angle with respect to a tangent.