Odor-resistant floor drain

Abstract

An odor-resistant floor drain comprises a casing, wherein openings are formed in the upper end and the lower end of the casing respectively, an annular water storage cavity is formed in the periphery of the opening in the lower end of the casing and located on the inner side of the casing, the top surface of the annular water storage cavity is open, a floating component is arranged on the upper side of the annular water storage cavity, the opening in the lower end of the casing is covered with the bottom surface of the floating component, an annular bulged part is downwards formed on the periphery of the bottom surface of the floating component and extends into the annular water storage cavity, and the axial length of the floating component is smaller than that of the casing; the floating component is pressed on the upper end surface of the inner circle side wall of the annular water storage cavity under the action of self-weight of the floating component to block a gas channel between a lower pipeline of the casing and the indoor space, so that mechanical seal is achieved; and meanwhile, the annular bulged part on the periphery of the bottom surface of the floating component is pressed into water stored in the annular water storage cavity to form a water sealing structure. According to the odor-resistant floor drain, the mechanical seal is achieved through weight, the opening manner depends on buoyant force, and accordingly, work reliability is guaranteed.

Description

Technical field: [0001] The invention relates to the mechanical field, in particular to a drainage device, in particular to an odor-proof floor drain. Background technique: [0002] In the prior art, the floor drain installed in the building is sealed with a water seal to prevent the gas in the pipeline from escaping into the room. In the case of long-term non-use, the water will evaporate and the seal will fail. Therefore, some floor drains are sealed mechanically, such as using spring force, or magnetic force, or levers. However, after long-term use of metal springs in sewage, problems such as spring corrosion and hair winding will lead to failure; magnets will fail due to magnetic attenuation, The guide is dirty and other reasons lead to failure; the lever also cannot be effectively sealed due to the increased friction of the rotating shaft. Invention content: [0003] The object of the present invention is to provide an odor-proof floor drain, which solves the technic...

AI Technical Summary

Problems solved by technology

Therefore, some floor drains are sealed mechanically, such as using spring force, or magnetic force, or levers. However, after long-term use of metal springs in sewage, problems such as spring corrosion and hair winding will lead to failure; magnets will fail due to magnetic attenuation, The guide is dirty and other reasons lead to failure; the lever also cannot be effectively sealed due to the increased friction of the rotating shaft

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