Bathtub overflow drainage apparatus

Abstract

A bathtub overflow drain device used for being connected with a bathtub is composed of a control unit, a water level sensing unit, an operating switch and a sealing unit with a driving device. The sealing unit comprises a sleeve connected to the drain part of the bathtub, a drive shaft driven by the driving device and a shut-off valve in the sleeve and driven to rotate by the drive shaft. The shut-off valve has at least two positions of closing and opening in the sleeve. Due to the structure, the drain device has simple and reliable operation and better flexibility in installation and connection.

Description

【Technical field】 [0001] The invention relates to an overflow and drainage device for a bathtub, in particular to an overflow and drainage device for an overflow and drain outlet of a bathtub. 【Background technique】 [0002] Existing bathtubs generally include a drain at the bottom of the bathtub and an overflow at the side wall of the bathtub. A drain pipe connecting the drain and the overflow is provided outside the bathtub wall. A drain valve is provided at the drain. There is a control knob on the part, and a steel wire is connected between the control knob and the drain valve. The user can rotate the control knob to drive the drain valve to open or close by means of the steel wire to realize drainage or water storage in the bathtub. When reaching the height of the overflow, the water will flow from the overflow into the drain pipe, and then flow to the sewer connected to the drain, so as to prevent the water from soaking over the top or edge of the bathtub equipment whe...

AI Technical Summary

Problems solved by technology

[0003] The problem with the existing technology is that the function of the steel wire is sometimes not very reliable. For example, when the installation position is not ideal, the user needs to rotate the control knob very hard to open the drain valve, which is very inconvenient, or the material of the steel wire Not good, the service life is short and needs to be replaced frequently; in addition, because the overflow of the existing bathtub needs to be connected to the drain pipe, the size of the overflow on the side wall has to be made very large, which relatively reduces the water capacity of the bathtub ; In addition, the installation and maintenance of the existing overflow drainage system of this mechanical structure is relatively complicated, and the length of the overflow pipe and the length of the steel wire stays need to be determined according to the size of the bathtub, and the length of the pipe or stay wire is fixed when leaving the factory. It is not adjustable. The depth of different brands and models of bathtubs on the market can vary as high as 20-30cm. In actual installation, the pipe will not completely match the matching bathtub. If the pipe is too long, the installer will cut off a section, causing Waste; if the pipe is short, you need to ask the supplier to replace the long pipe before installing it, that is, it is difficult to use an overflow drainage structure to other bathtubs, which is very inconvenient

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