Fixing device and fixing method of oxygen generator molecular sieve

Abstract

The invention discloses a fixing device and a fixing method of an oxygen generator molecular sieve. The fixing device comprises a cylinder, a top cover and a spring, wherein the cylinder is vertically arranged; an opening is formed in the top part of the cylinder; the cylinder is horizontally provided with an upper filter plate and a lower filter plate from top to bottom; the lower filter plate is fixedly arranged relative to the cylinder; the upper filter plate is movably arranged relative to the cylinder; a molecular sieve cavity which is used for containing the molecular sieve is defined by the upper filter plate, the lower filter plate and the inner wall of the cylinder; the top cover is fixedly arranged at the top part of the cylinder; the spring is arranged between the top cover and the upper filter plate; the upper end of the spring is in contact with the inner part of the top cover, and the lower end is in contact with the top part of the upper filter plate; the molecular sieve cavity is internally provided with a fixing frame; the fixing frame comprises a main pipe which is vertically arranged and a plurality of branch rods which are connected to the main pipe and are radially arranged by taking the main pipe as an axis. According to the fixing device disclosed by the invention, the possibility of lateral shift appearing in molecular sieve particles and the abrasive degree are reduced under the situations of jolting and tilting.

Description

technical field [0001] The invention relates to a molecular sieve fixing device applied to a medical oxygen generator, and also relates to a method for fixing the molecular sieve. Background technique [0002] In the existing molecular sieve oxygen generator, as the gas is filled and rolled, friction and damage will occur between the granular molecular sieves inside. On the one hand, the damaged powder will cause the gas filter to lose its function; The oxygen pipeline enters the oxygen storage tank, which affects the safety of oxygen use for patients in the ward. Thirdly, the excessive wear of the molecular sieve will seriously affect the oxygen production efficiency and service life of the oxygen generator. [0003] In order to solve the above problems, spring devices and filter screens are usually used in this field to fix molecular sieves. However, in scenarios such as mobile oxygen generators, the oxygen generator is in a state of violent bumps when it is working, and t...

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Problems solved by technology

[0002] In the existing molecular sieve oxygen generator, as the gas is filled and rolled, friction and damage will occur between the granular molecular sieves inside. On the one hand, the damaged powder will cause the gas filter to lose its function; The oxygen pipeline enters the oxygen storage tank, which affects the safety of oxygen use for patients in the ward. Thirdly, the excessive wear of the molecular sieve will seriously affect the oxygen production efficiency and service life of the oxygen generator.

[0003] In order to solve the above problems, spring devices and filter screens are usually used in this field to fix molecular sieves. However, in scenarios such as mobile oxygen generators, the oxygen generator is in a state of violent bumps when it is working, and the molecular sieve will instantly push the spring and filter screen due to inertia. At this time, the molecular sieve is no longer constrained by the filter screen. If the oxygen generator is in a tilted state due to bumps, the particles are prone to sideways movement. When the spring returns and the filter screen is pressed against the molecular sieve again, the surface of the molecular sieve is no longer parallel to the filter screen. The filter screen will force the molecular sieve particles to be parallel to the filter screen under the action of the spring, thus increasing the wear of the molecular sieve

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