Water outlet device for cleaning machine and column/piston pump

Abstract

The invention provides a water outlet device of a plunger / piston pump. A flow passage switching pipeline structure is added between a water inlet passage and a water outlet passage, a first slider which is fixedly connected with a Venturi pipe device and slides synchronously is arranged in the flow passage switching pipeline structure, an elastic return device guiding along a guide slideway in the return direction and a liquid suction pipeline are arranged between the first slider and the guide slideway, and a second slider which is butted against the Venturi pipe device is arranged at the other end of a flow passage switching pipeline and is in sliding seal with the guide slideway. In a liquid suction working condition, a passage of the Venturi pipe device is communicated with the water inlet passage and the water outlet passage; and in a normal working condition, the Venturi pipe device is pushed to a stagger position of the water inlet passage and the water outlet passage, passage area between the water inlet passage and the water outlet passage is enlarged, local pressure loss of constant-pressure working media flowing through the position between the water inlet passage and the water outlet passage is reduced greatly, and accordingly water outlet pressure is increased with wasted work not increased. The invention further provides a cleaning machine.

Description

technical field [0001] The invention relates to the technical field of pumps, and more specifically, to a washing machine and a column / piston pump water outlet device. Background technique [0002] Existing cleaning machines are generally required to have two working conditions: one is the normal cleaning working condition, which requires the working pressure of the unit to be as high as possible to improve the cleaning effect; the other is the liquid suction (cleaning agent) working condition, which requires the jet sprayed by the machine to be mixed with Cleaning agent, in order to remove the special dirt attached to the cleaning object. [0003] In order to meet the requirements of liquid suction conditions, the existing cleaning machines all use Venturi tube devices (such as figure 1 as shown, figure 1 It is a structural schematic diagram of the Venturi tube device in the existing cleaning machine), the working medium enters the outlet pipe 02 through the inlet pipe 01...

AI Technical Summary

Problems solved by technology

Although the device has the function of washing liquid, due to the small diameter of the throat pipe 04 and the diffuser pipe 05, under normal circumstances, the working medium will produce a certain local pressure loss here, thereby reducing the water outlet pressure and the cleaning effect of the equipment.

[0004] On the premise of selecting the above-mentioned traditional device, if you want to make up for the local pressure loss at this place, you must increase the water inlet pressure at the front of the Venturi tube, which will lead to an increase in the manufacturing cost and power consumption of the pump.

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