Diaphragm pump with a rail to restrict rotation and a piston cavity to engage with a guiding member at the end of the suction stroke
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United States of America Patent
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-
Nov 10, 2020
Grant Date -
Sep 22, 2016
app pub date -
Oct 31, 2014
filing date -
Nov 20, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A diaphragm pump has: a housing; a piston; a shaft; a rolling diaphragm, which is configured so that a lid portion reciprocally moves integrally with the piston; a driving device, which can convert rotational movement of a motor section to linear movement, and output the linear movement from an output axle to the shaft; a guiding member; and a restricting mechanism. The guiding member is placed on another axial end side of an interior of the housing with respect to the piston, attached to the housing, and able to guide the shaft movably in the axial direction. The restricting member is disposed in the housing and between the guiding member and the shaft, and able to restrict rotation of the shaft about the axis while allowing reciprocal movement in the axial direction.
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