Air drier and method

Abstract

The invention discloses an air drier and a method. The air drier comprises a shell and an inner bladder, wherein a closed cavity is formed between the shell and the inner bladder, a drying agent is filled in the inner bladder, the inner bladder is provided with an air inlet, an air outlet and an exhaust port, and the air outlet is respectively communicated with the exterior of the shell and the cavity. According to the method, the air drier can be used for drying compressed air and can realize regeneration of the drying agent. The air drier has a simple structure, is convenient to maintain, occupies a small space, and can meet actual demands on drying of the compressed air.

Description

technical field [0001] The present invention relates to an air dryer and method. Background technique [0002] All kinds of air equipment on rail vehicles in various countries have strict requirements on the moisture, oil and impurities in the compressed air. In order to ensure that the relative humidity of the compressed air in each air equipment on rail vehicles can reach below 35%, it must The system must be equipped with drying facilities to remove a large amount of moisture in the air. [0003] At present, the drying facilities that use adsorbents for drying are mainly single-tower air dryers and double-tower air dryers. [0004] The double-tower dryer has two working towers, which work in two states at the same time, that is, drying and regeneration are carried out at the same time. The double plug valve is a key component to control the switching of the working conditions of the two working towers. In actual use, due to the damage of the internal rubber of the doubl...

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Problems solved by technology

The double plug valve is a key component to control the switching of the working conditions of the two working towers. In actual use, due to the damage of the internal rubber of the double plug valve or the failure of the spring, it is easy to cause air leakage in the air dryer and a loud exhaust sound; and because It has a complex double-tower structure, and the maintenance workload is relatively large

[0005] Although the single-tower dryer has only one working tower, the structure is simpler than that of the double-tower dryer, but in order to realize the regeneration of the desiccant, the single-tower air dryer needs to be equipped with a regeneration air cylinder, a cut-off plug with exhaust, and an electro-pneumatic valve. And many other peripheral devices, occupying a large space

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