Electric water pump and water gun structure with water flow buffer chamber

Abstract

The invention relates to the technical field of liquid pumps, in particular to an electric water pump with a water flow buffer cavity. The electric water pump comprises a motor, a gear set, a transmission mechanism, a piston mechanism and the water flow buffer cavity; an output shaft of the motor is connected to the transmission mechanism through the gear set, the transmission mechanism is connected to the piston mechanism, and the piston mechanism comprises a piston cylinder; a piston body is arranged in the piston cylinder and connected to the transmission mechanism through a piston rod, thetransmission 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, and the water inlet is provided with a water inlet valve; and the water flow buffer cavity communicates with the piston cylinder through a communicating channel, and the resistance of the water flow buffer cavity to the water flow drained by the piston cylinder is smaller than the resistance of the water outlet to the water flow drained by the piston cylinder. The water flow buffer cavity communicates with the piston cylinder of the electric water pump, thus the electric water pump can accumulate energy before a piston enters into the effective drainage stoke, the accumulatedenergy is released when the piston enters into the effective drainage stoke, and the output pressure is increased.

Description

technical field [0001] The invention relates to the technical field of liquid pumps, in particular to an electric water pump and water gun structure with a water flow buffer chamber. 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 wate...

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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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