Float sealing structure for water-saving automatic washer

Abstract

The float sealing structure for water-saving automatic washer includes sealing hood, tray, draining cavity comprising outer tub, sealing hood and tray, and sealing part. It features that the sealing part is made of elastic material and has through hole in the center, outer edge and inner edge around the through hole. Of the edges, one is fixed and connected hermetically with the sealing surface, and the other is suspended with one protrudent lip for pressing the sealing surface under the action of buoyancy. The central through hole of the sealing part is jacketed onto the dewatering shaft, and the sealing part has at least one ring water pressure action surface to form end sealing under the action of the buoyancy of the water draining cavity.

Description

technical field [0001] The invention relates to a sealing structure of a washing machine, in particular to a floating body type sealing structure of a water-saving fully automatic washing machine. Background technique [0002] In the prior art, a water-saving fully automatic washing machine mainly refers to a washing machine in which the outer tub of the washing machine does not store water during washing, but only the inner tub stores water for washing. Fully automatic washing machines can save 20% to 30% of washing water. This water-saving type fully automatic washing machine is referring to Chinese invention patent 95117171.2 "automatic washing machine" and utility model patent 97231435.0 "water-saving type fully automatic washing machine" disclosed content, and its structural feature is that the inner tub (also known as the rotating drum) arranged inside the outer tub Bucket, dehydration bucket), for middle and lower side wall without holes, only the upper part has a ro...

AI Technical Summary

Problems solved by technology

Its disadvantages are: (1) according to the conventional sealing structure of the prior art, that is, the lips and teeth of the sealing member 10 always hold the outer cylindrical surface 6a of the rotating retaining ring that rotates at high speed, and wear will occur when the inner barrel rotates at a high speed. Resulting in a short life of the seal 10, causing the seal to fail

(2) The seal is extremely prone to noise during high-speed dry friction

(3) The friction force is large, which will consume a lot of power of the motor, and in severe cases, it will cause difficulty in starting the motor during the dehydration process

(4) It is difficult to ensure the sealing performance in the process: because the lip teeth of the sealing member 10 and the outer cylindrical surface 6a of the rotating retaining ring should have good concentricity to have good sealing performance, but the outer barrel 1 and the sealing cover 11 are large Plastic parts are easily deformed, and it is difficult to ensure that they have good concentricity; sometimes in order to compensate for installation errors, the assembly interference of the sealing lips and teeth on the outer cylindrical surface 6a of the rotating retaining ring can be increased, but in this way, it will As a result, the friction force of the seal will increase, and the problems of (1) to (3) above will be aggravated.

(5) In order to solve the problem of dynamic sealing, it is necessary to use wear-resistant and corrosion-resistant materials to manufacture the rotating retaining ring 6, and in order to reduce the wear of the sealing pair, the outer cylindrical surface 6a of the rotating retaining ring should also have higher precision and smoothness. All will lead to an increase in cost, and in order to solve the noise generated by dry friction and improve life, the composition of the seal 10 material must also be improved, which will also lead to an increase in cost

Following the development of this technical solution, not only the cost will increase greatly, but also it will be difficult to obtain the ideal technical effect, which limits the development of this kind of water-saving fully automatic washing machine in various ways.

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