Self-restoring flow controller

Abstract

The invention relates to a self-restoring flow controller, which mainly comprises a jet mixer with a Venturi structure, a hydraulic control valve, and an air pressure control valve. When water flows in the jet mixer, negative pressure is generated in an air sucker and a liquid sucker, at the moment, a button is pushed, so that an air hole communicates with an air outlet and a bypass passage, the negative pressure maintains the communicating state, and upwardly contracts an air pressure bag to lift a needle valve, and thereby detergent flows into the jet mixer via the gap between the needle valve and a needle valve seat and is mixed with water into laundry detergent in appropriate concentration and flowing into a washing tub.

Description

technical field [0001] The invention relates to a self-resetting flow control device for continuously adding detergent to form a laundry liquid with a suitable concentration during the water intake stage when the washing machine needs to add detergent, which belongs to the detergent feeding technology of the washing machine. Background technique [0002] The principle of washing clothes: Whether machine washing or hand washing, the ideal way is to make a washing liquid with a suitable concentration and uniformity first, and then put the clothes to be washed into the machine and stir them evenly. After soaking in the washing liquid, use the tension of the detergent to The dirt is separated from the clothes so that the clothes can be cleaned. [0003] The correct way to wash clothes with a washing machine should be: first turn on the machine and turn on the water, put in enough detergent and mix it with water, then put the clothes into the washing machine for soaking and washi...

AI Technical Summary

Problems solved by technology

Because the washing liquid with uniform concentration is not prepared in advance and then the clothes are soaked, after the clothes are saturated with water, it is difficult for the detergent to blend into the fibers of the clothes, so it is often not clean enough, and some clothes Discoloration may even occur due to prolonged contact with high-concentration detergents

[0005] Although some washing machines with the function of adding detergent put undiluted detergent directly into the washing bucket during the water intake process, it is easy to damage the clothes

In the patent application number 200820034740.7, an automatic washing powder adding device for washing machine is disclosed. The advantage is that it can automatically add washing powder, and overcome the problem of washing powder caking and clogging. The disadvantage is that directly putting washing powder into the washing bucket will easily damage the clothes.

[0006] Some fully automatic washing machines are fully airtight when they are working. It is very inconvenient to prepare the washing liquid before putting in the clothes.

[0007] In the patent application number 201010179091.1, a detergent and disinfectant automatic adding device for washing machines is disclosed. The advantage is that it can be controlled relatively accurately. It is impossible to ensure that all the washing liquids that enter the washing bucket are of uniform concentration, and the structure is relatively complicated.

[0008] In the patent document No. 201110120512.8, a detergent injection and mixing device is disclosed. A duckbill-shaped discharge nozzle is placed in the discharge port of the bucket, and the detergent is squeezed into the turbine for stirring under the action of the motor. The advantage is that it can mix uniform washing liquid. The disadvantage is that the elasticity of the duckbill-shaped discharge nozzle will weaken after a long time of use, so that when the motor does not work, the detergent may automatically remain in the turbine agitator.

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