A Structure of Electric Water Pump and Water Gun with Stroke Changing Mechanism

Abstract

The invention relates to the technical field of liquid pumps, in particular to an electric water pump with a travel change mechanism. The electric water pump comprises a motor, a gear set, a transmission mechanism, a piston mechanism and the travel change mechanism; an output shaft of the motor is connected to the transmission mechanism through the gear set; the transmission mechanism is connectedto the piston mechanism; the piston mechanism comprises a piston cylinder; a piston body is arranged in the piston cylinder, and is connected to the transmission mechanism through a piston rod; the transmission mechanism drives the piston body to move up and down through the piston rod; the piston cylinder is provided with a water outlet and a water inlet; the water outlet is provided with a water outlet valve; a water inlet valve is arranged in the water inlet; a water flow buffer cavity communicates to the piston cylinder through a communicating channel; the travel change mechanism comprises the water flow buffer cavity and a control mechanism; the control mechanism comprises an electromagnetic driving module and an electromagnetic valve; the electromagnetic valve is arranged in the communicating channel communicating with the piston cylinder; and the electromagnetic driving module controls the electromagnetic valve to realize control over opening and closing of the water flow buffer cavity. Through change of the structure of the piston module, the output water pressure of the electric water pump is increased.

Description

technical field [0001] The invention relates to the technical field of liquid pumps, in particular to an electric water pump and a water gun structure with a stroke changing mechanism. Background technique [0002] An electric water pump generally includes a motor, a gear set, a transmission mechanism and a piston assembly, wherein the motor is connected to the transmission mechanism through the gear set, and the transmission mechanism is connected to the piston assembly, so that the motor drives the piston assembly to move the piston. During the working process of the electric water pump, its piston assembly includes a water suction stroke and a discharge stroke. Wherein, the water suction stroke is the distance moved by the piston during the process of sucking the external water into the piston assembly; the drainage stroke is the distance moved by the piston during the process of discharging the water inside the piston assembly. In practical applications, the electric wa...

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Problems solved by technology

[0003] In the existing technology, the only way to increase the output water pressure of the electric water pump is to increase the power of the motor of the electric water pump. The direct way is to use a high-power motor, and the high-power motor has high price, large volume, and high requirements for power supply equipment. characteristics, resulting in a great increase in the cost, volume and quality of electric water pumps, which directly limits the application range of electric water pumps

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