The utility model relates to the technical field of application of chemical equipment, in particular to a
piston type pressing device for
bed materials of a
pressure swing adsorption tower, and aims to solve the problem that in the process of pressing
bed material adsorbents in the
pressure swing adsorption tower at present, a rigid pressing structure of a
sieve plate and an air cylinder is generally adopted; and generally, the
sieve plate is extremely easy to roll under the
impact of the air flow, and finally, the
bed layer material is leaked. According to the device,
piston guide frames are additionally arranged on the circumferential sides of an upper
sieve plate and a lower sieve plate, and a plurality of rubber
piston rings which are tightly arranged are arranged between the
piston guide frames and the inner wall of an adsorption
tower, so that the upper sieve plate, the lower sieve plate and a sieve mesh are integrally compressed into a bed layer material when being impacted by relatively large air flow; the upper sieve plate, the lower sieve plate and the whole sieve mesh can flexibly shake along with the extension and retraction of the rubber
piston ring, so that the phenomena of
rollover and the like caused by rigid
extrusion and collision of the whole sieve plates and the whole sieve mesh are effectively avoided, and the whole application efficiency of the
pressure swing adsorption tower is further improved.