CN220090942U - Oxygen production adsorption tower - Google Patents

Abstract

The utility model relates to the field of oxygen production equipment, in particular to an oxygen production adsorption tower, which comprises a tank body, wherein an air inlet pipe is fixed at the lower end of the tank body, an air outlet pipe is fixed at the upper end of the tank body, an inner pipe is arranged in the tank body, a baffle is spirally arranged between the inner pipe and the tank body, a guide plate is arranged on the tank body at the lower end of the inner pipe, the bottom of the inner pipe is sealed by the guide plate, a plurality of air inlet holes are further arranged on the guide plate below the baffle, a limiting plate is further fixed in the tank body above the inner pipe, a current limiting pipe is further fixed on the limiting plate, and the bottom of the current limiting pipe is arranged in the inner pipe. After entering the tank body, the compressed gas rises in the molecular sieve in a spiral path, moves in the molecular sieve in an S-shaped path, and is discharged and collected, so that the moving path of the compressed gas in the molecular sieve can be effectively prolonged, the contact time of the compressed gas and the molecular sieve is prolonged, and nitrogen in the air is fully absorbed.

Description

Oxygen production adsorption tower

[ field of technology ]

The utility model relates to the field of oxygen production equipment, in particular to an oxygen production adsorption tower.

[ background Art ]

The RDO oxygenerator is mainly composed of two adsorption towers filled with molecular sieves, compressed air is filtered, dehydrated, dried and purified at normal temperature and then enters the adsorption towers, nitrogen and the like in the air in the adsorption towers are adsorbed by the molecular sieves, so that oxygen is enriched in gas phase, flows out from an outlet and is stored in an oxygen buffer tank, the adsorbed molecular sieves in the other tower are rapidly depressurized, adsorbed components are analyzed, and the two towers are alternately circulated, so that the low-cost oxygen with the purity of more than or equal to 90% can be obtained. The automatic switching of the valves of the whole system is automatically controlled by a computer.

The air inlet structure of the existing adsorption tower mostly adopts a porous plate structure, and air flow with the pressure of up to 0.6 megaPa directly enters from the bottom, directly flows upwards in parallel through an air inlet pipe, and passes through a molecular sieve through the porous plate to reach an air outlet pipe of the adsorption tower. As patent application number CN201520646680.4 discloses an adsorption tower for low dew point pressure swing adsorption nitrogen making machine, air current enters from the bottom of the adsorption tower and is discharged through the top of the adsorption tower after being adsorbed by molecular sieve, the molecular sieve adsorbs nitrogen in air and shunts oxygen out, because the length of the adsorption tower is limited and the flow speed of compressed air is faster, the contact time of air and the molecular sieve is very short, the molecular sieve can not fully adsorb nitrogen in air, thereby causing the concentration of oxygen to be lower and failing to reach the standard.

The utility model is researched and proposed for overcoming the defects of the prior art.

[ utility model ]

The utility model aims to overcome the defects of the prior art and provides an oxygen generation adsorption tower.

The utility model can be realized by the following technical scheme:

the utility model discloses an oxygen-making adsorption tower, which comprises a tank body, wherein an air inlet pipe is fixed at the lower end of the tank body, an air outlet pipe is fixed at the upper end of the tank body, an inner pipe is arranged in the tank body, a baffle is spirally arranged between the inner pipe and the tank body, a guide plate is arranged on the tank body at the lower end of the inner pipe, the bottom of the inner pipe is sealed by the guide plate, a plurality of air inlets are further arranged on the guide plate below the baffle, a limiting plate is further fixed in the tank body above the inner pipe, a current-limiting pipe is further fixed on the limiting plate, the bottom of the current-limiting pipe is arranged in the inner pipe, an air outlet penetrating through the limiting plate is further arranged on the limiting plate inside the current-limiting pipe, and a porous plate is further fixed on the limiting plate at the air outlet position. The tank body between the guide plate and the limiting plate is internally filled with the molecular sieve, compressed gas enters the tank body through the air inlet pipe, then reaches the molecular sieve position through the air inlet hole on the guide plate, nitrogen and oxygen are separated through adsorption of the molecular sieve, as the baffle is spirally arranged between the inner pipe and the tank body, the compressed gas spirally rises along the gap between the baffle and the inner pipe and between the inner pipe and the tank body after passing through the air inlet hole, after the gas reaches the upper part of the baffle, the gas enters the inner pipe through a gap between the top of the inner pipe and the limiting plate, the compressed gas descends along the gap between the inner pipe and the limiting pipe, after reaching the bottom of the limiting pipe, the compressed gas enters the limiting pipe, rises in the limiting pipe, oxygen in the compressed gas is discharged and collected through the air outlet pipe after finally passing through the porous plate, after entering the tank body, the compressed gas moves in the molecular sieve in an S-shaped path after rising in the molecular sieve, then is discharged and collected, so that the movement path of the compressed gas in the molecular sieve can be effectively prolonged, the contact time of the compressed gas and the molecular sieve is prolonged, and the nitrogen in the air is fully absorbed.

Preferably, a pressing plate is further arranged in the flow limiting pipe below the porous plate, through holes are uniformly formed in the pressing plate, and a spring is further fixed between the pressing plate and the porous plate. The pressing plate is pushed by the spring to press the molecular sieve below the pressing plate, so that the molecular sieve is further prevented from being impacted and flying by compressed air, and the molecular sieve is prevented from being mutually collided and pulverized.

Preferably, a conical guide block is also fixed in the tank body below the guide plate. The guide block is arranged at the position, which is right opposite to the air inlet pipe, in the tank body, compressed air is dispersed by the guide block and then enters the tank body, so that impact of the compressed air on the molecular sieve is further avoided.

Compared with the prior art, the utility model has the following advantages:

1. after entering the tank body, the compressed gas rises in the molecular sieve in a spiral path, moves in the molecular sieve in an S-shaped path, and is discharged and collected, so that the moving path of the compressed gas in the molecular sieve can be effectively prolonged, the contact time of the compressed gas and the molecular sieve is prolonged, and nitrogen in the air is fully absorbed.

2. Air enters the tank body and then enters the molecular sieve from an air inlet hole at one side of the tank body, so that impact to the molecular sieve can be effectively avoided, the molecular sieve is filled in a spiral baffle plate, and when the air impacts to the molecular sieve, the top of the molecular sieve is blocked by the baffle plate, so that the molecular sieve is further prevented from being crashed and pulverized mutually due to impact and galloping.

[ description of the drawings ]

The utility model is described in further detail below with reference to the attached drawing figures, wherein:

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a front view of the structure of the present utility model;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;

in the figure: 1. a tank body; 2. an inner tube; 3. a deflector; 4. a limiting plate; 5. a baffle; 6. an air inlet hole; 7. an air outlet pipe; 8. an air inlet pipe; 9. a flow guiding block; 10. a flow limiting pipe; 11. a porous plate; 12. a pressing plate; 13. a spring;

[ detailed description ] of the utility model

Embodiments of the present utility model will be described in detail below with reference to the attached drawings:

example 1:

as shown in fig. 1 to 3, this embodiment discloses an oxygen-generating adsorption tower, including a tank body 1, tank body 1 lower extreme is fixed with intake pipe 8, tank body 1 upper end is fixed with outlet duct 7, be provided with inner tube 2 in the tank body 1, spiral is provided with baffle 5 between inner tube 2 and the tank body 1, be provided with guide plate 3 on tank body 1 of inner tube 2 lower extreme, guide plate 3 seals inner tube 2 bottom, still be provided with a plurality of inlet port 6 on the guide plate 3 of baffle 5 below, still be fixed with limiting plate 4 in the tank body 1 of inner tube 2 top, still be fixed with limited flow tube 10 on the limiting plate 4, limited flow tube 10 bottom sets up in inner tube 2, still be provided with the gas outlet that runs through limiting plate 4 on the limiting plate 4 of limited flow tube 10 inside, still be fixed with perforated plate 11 on the limiting plate 4 of gas outlet position. After the compressed gas enters the tank body 1 through the air inlet pipe 8 and reaches the molecular sieve position, the compressed gas spirally rises along the gap between the baffle 5, the inner pipe 2 and the tank body 1 after passing through the air inlet pipe 6 on the air inlet pipe 3, the compressed gas spirally rises along the gap between the baffle 5, the inner pipe 2 and the tank body 1 after passing through the air inlet pipe 6, the gas enters the inner pipe 2 through the gap between the top of the inner pipe 2 and the limiting plate 4 after reaching the upper part of the baffle 5, the compressed gas descends along the gap between the inner pipe 2 and the limiting pipe 10, the compressed gas enters the limiting pipe 10 after reaching the bottom of the limiting pipe 10, the compressed gas rises in the limiting pipe 10, the compressed gas finally passes through the porous plate 11 and is discharged and collected by the air outlet pipe 7, the compressed gas firstly moves in the molecular sieve in an S-shaped path after entering the tank body 1, the compressed gas is discharged and collected after moving in the molecular sieve in the S-shaped path, the contact time of the compressed gas and the nitrogen in the air can be effectively prolonged.

Example 2:

the embodiment discloses an oxygen generation adsorption tower, on the basis of the structure and principle of embodiment 1, a pressing plate 12 is further arranged in a flow limiting pipe 10 below a porous plate 11 of the embodiment, through holes are uniformly formed in the pressing plate 12, and a spring 13 is further fixed between the pressing plate 12 and the porous plate 11. The pressing plate 12 is pushed by the spring 13 to press the molecular sieve below the pressing plate 12, so that the molecular sieve is further prevented from being impacted and flying by compressed air, and the molecular sieve is prevented from being mutually collided and pulverized.

Example 3:

the embodiment discloses an oxygen generation adsorption tower, and on the basis of the structure and principle of embodiment 1 or embodiment 3, a conical flow guide block 9 is also fixed in the tank body 1 below the flow guide plate 3 in the embodiment. The guide block 9 is arranged in the tank body 1 opposite to the air inlet pipe 8, and compressed air is dispersed by the guide block 9 and then enters the tank body 1, so that impact of the compressed air on the molecular sieve is further avoided.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that various changes, modifications, substitutions and alterations can be made herein by those skilled in the art without departing from the technical principles of the present utility model, and such changes, modifications, substitutions and alterations are also to be regarded as the scope of the utility model.

Claims (3)

1. The utility model provides an oxygen generation adsorption tower, includes a jar body, jar body lower extreme is fixed with the intake pipe, jar body upper end is fixed with the outlet duct, its characterized in that: an inner pipe is arranged in the tank body, a baffle is arranged between the inner pipe and the tank body in a spiral way, a guide plate is arranged on the tank body at the lower end of the inner pipe, the guide plate seals the bottom of the inner pipe, a plurality of air inlets are also arranged on the guide plate below the baffle, the utility model discloses a jar of internal still be fixed with the limiting plate in the jar body of inner tube top, still be fixed with the current-limiting pipe on the limiting plate, current-limiting pipe bottom sets up in the inner tube, still be provided with the gas outlet that runs through the limiting plate on the limiting plate of current-limiting pipe inside, still be fixed with the perforated plate on the limiting plate of gas outlet position.

2. The oxygen-generating adsorption tower according to claim 1, wherein: a pressing plate is further arranged in the flow limiting pipe below the porous plate, through holes are uniformly formed in the pressing plate, and a spring is further fixed between the pressing plate and the porous plate.

3. The oxygen-generating adsorption tower according to claim 1, wherein: a conical guide block is also fixed in the tank body below the guide plate.