Adsorption tower gas distribution device of medical molecular sieve PSA oxygen generator

Abstract

The invention discloses an adsorption tower gas distribution device of a medical molecular sieve PSA oxygen generator. The device comprises a cylindrical body, wherein the outer layer of the cylindrical body is a sieve plate with vent holes, the inner layer is a metal net, and a baffle is arranged at the bottom end. The top end of the cylindrical body is a threaded structure connected with an adsorption tower. The top end of the cylindrical body is a flange structure connected with the adsorption tower. A gasket for the flange structure is connected with the adsorption tower. The metal net adopts a rhombus structure. The vent holes in the sieve plate are round hole structures which cannot allow molecular sieves to pass. The device has the benefits as follows: the gas distribution device issimple in structure, a process is good to implement, the effect is good, the cost is low, the service life is long and large-scale popularization and use are facilitated.

Description

technical field [0001] The invention relates to the technical field of medical molecular sieve oxygen generators, in particular to a medical molecular sieve PSA oxygen generator adsorption tower gas device. Background technique [0002] At present, there are few gas distribution devices for PSA oxygen generators in China, and the economical and applicable type is even rarer; the existing gas distribution devices (composed of compression mechanism, deflector, diverter plate, gas distribution plate, etc.) are complex in structure and difficult to realize. , high cost, short life, not convenient for commercial promotion and use; the high-speed airflow entering the adsorption tower directly scours the molecular sieve on the airflow channel, and under the scour of the uneven airflow, the friction between the molecular sieve particles causes the surface of the molecular sieve particles to fall off , so that the molecular sieve is easier to pulverize and fail, greatly reducing the ...

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Problems solved by technology

[0002] At present, there are few gas distribution devices for PSA oxygen generators in China, and the economical and applicable type is even rarer; the existing gas distribution devices (composed of compression mechanism, deflector, diverter plate, gas distribution plate, etc.) are complex in structure and difficult to realize. , high cost, short life, not convenient for commercial promotion and use; the high-speed airflow entering the adsorption tower directly scours the molecular sieve on the airflow channel, and under the scour of the uneven airflow, the friction between the molecular sieve particles causes the surface of the molecular sieve particles to fall off , so that the molecular sieve is easier to pulverize and fail, greatly reducing the service life of the molecular sieve, and the pulverized molecular sieve is also easy to block the air inlet; the high-speed airflow entering the adsorption tower directly scours the molecular sieve on the airflow channel, so that the molecular sieve in the adsorption tower It is easier to pulverize and fail, reduce the adsorption performance of molecular sieves, and greatly reduce the gas production and product gas concentration of molecular sieves; the pretreated high-speed raw material air enters the adsorption tower, directly scours the molecular sieves on the air flow channel, and even directly penetrates the bed. Tunnel effect and side wall effect are prone to occur, greatly reducing the gas production and product gas concentration; when the molecular sieve desorbs nitrogen, the nitrogen will be directly discharged from the channel when the air enters, which is not conducive to the complete nitrogen removal of the surrounding molecular sieve in the adsorption tower; in addition The pulverized molecular sieve is easy to block the air flow channel and is not conducive to the complete nitrogen removal of the molecular sieve, resulting in a greatly reduced gas production and product gas concentration

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