Series diaphragm pump with non-return and anti-seepage functions

Abstract

The invention discloses a series diaphragm pump with non-return and anti-leakage functions, and relates to the technical field of diaphragm pumps. The diaphragm pump comprises a shell mechanism, a diaphragm mechanism, a driving mechanism and a non-return mechanism; specifically, the shell mechanism comprises a supporting component, a diaphragm seat and an upper cover, wherein a first accommodatingcavity, a second accommodating cavity and a third accommodating cavity are clamped between the upper cover and the diaphragm seat, and the diaphragm seat is provided with a first channel, a second channel and a third channel; the diaphragm mechanism comprises a diaphragm, and a first movable bag and a second movable bag which are connected in series, wherein the diaphragm is provided with a firstdiaphragm body and a second diaphragm body, the first movable bag comprises a first bag cavity, the second movable bag is provided with a second bag cavity, the first channel and the second channel communicate with the first bog cavity, and the third channel and the third cavity communicate with the second bag cavity; the driving mechanism is used for driving the first movable bag and the secondmovable bag to move up and down in a staggered mode; and the non-return mechanism is used for preventing external solution from flowing back to the second bag cavity.

Description

technical field [0001] The invention relates to the technical field of diaphragm pumps, in particular to a serial diaphragm pump with check and anti-leakage functions. Background technique [0002] Diaphragm liquid pumps provide circular motion by the motor, and then the diaphragm in the liquid pump is reciprocated by a mechanical device, thereby compressing and stretching the air in the pump cavity. There is a pressure difference between the water inlet and the external atmospheric pressure. Under the action of the pressure difference, water is pressed into the water inlet and then discharged from the water outlet. This diaphragm liquid pump has been well applied in occasions such as small household appliances and medical equipment. [0003] An existing diaphragm pump consisting of a motor, an eccentric wheel, a steel needle, a curved rod, a lower seat, a bell seat, a bell, a middle plate, an umbrella, a diaphragm, an upper cover, and a circlip; , drives the eccentric whe...

AI Technical Summary

Problems solved by technology

[0005] (1): The existing diaphragm pump itself does not have a check system, and a single check valve needs to be connected externally, which results in large volume, high cost and low assembly efficiency

[0006] (2): The existing diaphragm pump uses 2 umbrella valves and 1 diaphragm as the water inlet and outlet system. The umbrella valve is easy to stick, which may cause the opening pressure of the pump to be too high or the umbrella valve cannot be opened; and the umbrella valve The ability to pass foreign matter is poor. In the actual use process, foreign matter particles of various sizes will be mixed in the water. When the water pump passes through the water, the umbrella valve is easy to absorb particles, causing the inlet and outlet to be blocked, so that the diaphragm pump cannot work.

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