Non-circular gear drive diaphragm pump

Abstract

The invention discloses a non-circular gear drive diaphragm pump and belongs to the technical field of pumps. The structural characteristic that a motive seal is not needed for the diaphragm pump is utilized, so that the problems that a conventional pump leaks, and an infection point effect exists when a crank block structure is adopted for an existing diaphragm are solved; various kinds of corrosive liquid, liquid with particles and liquid which is high in viscosity, volatile, combustible and virulent can be conveyed. When volatile and corrosive media are conveyed, the environment cannot be polluted, and harm to personal safety is avoided. Due to the cooperation of a non-circular gear, the infection point effect of the crank block structure is eliminated. A diaphragm is not provided with a rotating part, passing performance is good, and the diameter of the maximum particle allowed to pass through the diaphragm is 10 mm. In addition, shear flow is avoided for the conveyed liquid, abrasion of parts of the diaphragm pump is small, damage to conveyed objects is small, and mud and life entities such as small fry can be conveyed.

Description

technical field [0001] The invention belongs to the technical field of pumps, and relates to a displacement pump, in particular to a diaphragm pump driven by a non-circular gear. Background technique [0002] Existing ordinary water pumps mostly use propellers to drive liquid or use atmospheric pressure. Ordinary water pumps must have dynamic seals, and the sealing types include packing seals and mechanical seals. Both seals inevitably have leakage, but the leakage of packing seal is larger, and the leakage of mechanical seal is smaller. However, the diaphragm pump is a new type of conveying machine, which can convey the medium completely without leakage, from the medium entering the pump inlet to the outlet being discharged from the pump. The structural design of the pump has no dynamic seal, and the medium and the atmosphere are separated by a diaphragm. [0003] When the existing diaphragm pump converts the rotational kinetic energy of the power source into the kinetic e...

AI Technical Summary

Problems solved by technology

[0003] When the existing diaphragm pump converts the rotational kinetic energy of the power source into the kinetic energy of the back and forth movement of the pull rod, the crank slider structure is often used, but there is an inflection point in the crank slider structure. When the crank slider structure is at the inflection point, the kinetic energy of the slider is the smallest and Close to zero, causing the power of the diaphragm pump to drop sharply

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