Nitrogen-oxygen separation device based on molecular sieve

Abstract

The nitrogen-oxygen separation device comprises an air compressor, an air compression tank is arranged on one side of the air compressor, a plurality of molecular sieve tanks are arranged on one side of the air compression tank, and a molecular sieve cylinder is arranged between every two adjacent molecular sieve tanks. One side of the bottom of the molecular sieve tank is communicated with a butt joint pipe through an opening, a first flange plate is fixedly arranged on the outer wall of one side of the butt joint pipe, first butt joint holes distributed at equal intervals are formed in the outer wall of the first flange plate, and second flange plates are fixedly arranged on the outer walls of the two ends of the molecular sieve cylinder. The molecular sieve tanks are communicated with the molecular sieve cylinders, and the molecular sieve cylinders are communicated with one another, so that air sequentially passes through the interiors of the molecular sieve tanks and the molecular sieve cylinders, the air can be filtered in the molecular sieve tanks and the molecular sieve cylinders for a long time, and the air filtering effect is greatly improved; therefore, the air input speed can be increased, and the oxygen preparation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oxygen production, in particular to a nitrogen and oxygen separation device based on molecular sieves. Background Art

[0002] As nitrogen and oxygen are used in increasingly diverse applications, research on their separation is also deepening. Currently, several methods are being used to separate nitrogen and oxygen from the air: distillation, chemical reaction, water electrolysis, membrane separation, and molecular sieve separation.

[0003] Existing devices that use molecular sieves to separate nitrogen and oxygen mainly use molecular sieve towers equipped with zeolite molecular sieves to adsorb nitrogen in the gas and then produce oxygen. However, existing nitrogen and oxygen separation devices use a single molecular sieve tower to adsorb nitrogen in the air. In order to improve the purity of oxygen, the only way is to reduce the flow rate of air in the molecular sieve tower, thereby reducing the oxygen production rate. In order to increase the oxygen preparation rate and improve the oxygen purity, we propose a nitrogen and oxygen separation device based on molecular sieves. Utility Model Content

[0004] The purpose of the utility model is to provide a nitrogen and oxygen separation device based on molecular sieves to solve the above-mentioned deficiencies in the technology.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a nitrogen and oxygen separation device based on molecular sieve, comprising an air compressor, an air compression tank is provided on one side of the air compression tank, several molecular sieve tanks are provided on one side of the air compression tank, and a molecular sieve cylinder is provided between adjacent molecular sieve tanks, and a docking pipe is connected to one side of the bottom of the molecular sieve tank through an opening, a first flange is fixedly provided on the outer wall of one side of the docking pipe, and first docking holes are equally distributed on the outer wall of the first flange, and second flanges are fixed on the outer walls of both ends of the molecular sieve cylinder, and second docking holes are equally distributed on the outer wall of one side of the second flange, and the inner walls of the first docking hole and the second docking hole are equipped with matching bolts, the top outer wall of the molecular sieve tank is connected to a first pipe joint through an opening, and a second air duct is connected between adjacent first pipe joints.

[0006] Preferably, the output end of the air compressor is connected to the air compression tank through a pipeline, and the air can be compressed and input into the air compression tank through the air compressor.

[0007] Preferably, one side outer wall of the air compression tank is connected to a first air duct through an opening, a heat exchanger is installed on the outer wall of the first air duct, the other end of the first air duct is connected to a first pipe joint provided on the top of the molecular sieve tank, air can be input into the first pipe joint through the first air duct, and the heat exchanger provided on the outer wall of the first air duct can cool the passing gas.

[0008] Preferably, one end of the top of the molecular sieve tank is connected to an oxygen storage tank via a first pipe joint using a pipeline, and one side of the bottom of the oxygen storage tank is connected to an oxygen storage tank via an opening, and the outer wall of one end is fixedly provided with oxygen, and the prepared oxygen can be stored through the oxygen storage tank.

[0009] Preferably, the inner walls of the molecular sieve tank and the molecular sieve cylinder are filled with zeolite molecular sieve, and the zeolite molecular sieve can adsorb and filter nitrogen in the air.

[0010] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0011] Through a number of molecular sieve tanks and molecular sieve cartridges, the molecular sieve tanks and molecular sieve cartridges are interconnected, so that the air passes through the inside of the molecular sieve tanks and molecular sieve cartridges in turn. The air can be filtered inside the molecular sieve tanks and molecular sieve cartridges for a long time, which greatly improves the filtering effect of the air. For this reason, the air input speed can be increased, and the oxygen preparation efficiency is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of a molecular sieve-based nitrogen and oxygen separation device of the present invention;

[0014] Figure 2 This is a schematic structural diagram of an air compression tank of a nitrogen and oxygen separation device based on molecular sieves in the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of a molecular sieve tank of a nitrogen and oxygen separation device based on molecular sieves in the utility model;

[0016] Figure 4 This is a schematic diagram of the structure of a storage tank for a nitrogen and oxygen separation device based on molecular sieves in the utility model;

[0017] Figure 5 The utility model is a schematic diagram of the molecular sieve cartridge structure of a nitrogen and oxygen separation device based on molecular sieve.

[0018] Description of reference numerals:

[0019] 1 air compressor, 2 air compression tank, 3 molecular sieve tank, 4 molecular sieve cartridge, 5 first air duct, 6 heat exchanger, 7 first pipe joint, 8 second air duct, 9 docking pipe, 10 first flange, 11 first docking hole, 13 second flange, 14 second docking hole, 15 oxygen storage tank. DETAILED DESCRIPTION

[0020] The following diagrams illustrate various embodiments of the present invention. For clarity, many practical details will be included in the following description. However, it should be understood that these practical details are not intended to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not essential. Furthermore, to simplify the drawings, some commonly used structures and components are depicted in simplified schematic form.

[0021] In addition, in the present invention, descriptions such as "first" and "second" are only used for descriptive purposes and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0022] Example 1

[0023] Refer to the instruction manual Figure 1-5 A nitrogen and oxygen separation device based on molecular sieves includes an air compressor 1, an air compression tank 2 is provided on one side of the air compression tank 2, several molecular sieve tanks 3 are provided on one side of the air compression tank 2, and a molecular sieve cylinder 4 is provided between adjacent molecular sieve tanks 3. A docking pipe 9 is connected to one side of the bottom of the molecular sieve tank 3 through an opening, and a first flange 10 is fixedly provided on the outer wall of one side of the docking pipe 9. The outer wall of the first flange 10 is provided with first docking holes 11 distributed at equal distances. Second flanges 13 are fixedly provided on the outer walls of both ends of the molecular sieve cylinder 4, and second docking holes 14 distributed at equal distances are opened on the outer wall of one side of the second flange 13. The inner walls of the first docking holes 11 and the second docking holes 14 are provided with matching bolts. The top outer wall of the molecular sieve tank 3 is connected to a first pipe joint 7 through an opening, and a second air guide pipe 8 is connected between adjacent first pipe joints 7.

[0024] Example 2

[0025] Based on Example 1, the output end of the air compressor 1 is connected to the air compression tank 2 through a pipe, and the air can be compressed and input into the air compression tank 2 through the air compressor 1. The outer wall of one side of the air compression tank 2 is connected to a first air duct 5 through an opening, and a heat exchanger 6 is installed on the outer wall of the first air duct 5. The other end of the first air duct 5 is connected to the first pipe joint 7 provided on the top of the molecular sieve tank 3. Air can be input into the first pipe joint 7 through the first air duct 5, and the heat exchanger 6 provided on the outer wall of the first air duct 5 can cool the passing gas.

[0026] Example 3

[0027] Based on the first embodiment, one end of the top of the molecular sieve tank 3 is connected to the oxygen storage tank 15 by a pipeline through the first pipe joint 7, and one side of the bottom of the oxygen storage tank 15 is connected to 16 through an opening. One end of the outer wall of 16 is fixed with 17. The prepared oxygen can be stored through the oxygen storage tank 15, and the inner walls of the molecular sieve tank 3 and the molecular sieve cylinder 4 are filled with zeolite molecular sieves, which can adsorb and filter nitrogen in the air.

[0028] Working principle of this utility model:

[0029] Refer to the instruction manual Figure 1-5 When the utility model is used, the outside air is filtered and sucked into the air compression tank 2 through the air compressor 1. The compressed gas in the air compression tank 2 is input into the molecular sieve tank 3 through the first air duct 5. The gas passing through the first air duct 5 is cooled by the heat exchanger 6 provided on the first air duct 5. The air with low temperature is input into the molecular sieve tank 3 after cooling, and the air is input into the molecular sieve cylinder 4 through the docking pipe 9. The gas in the molecular sieve cylinder 4 is input into the next molecular sieve tank 3 again. The air passes through the interior of the molecular sieve tank 3 and the molecular sieve cylinder 4 in turn, which greatly improves the filtering effect of the air. For this reason, the air input speed can be increased, the oxygen preparation efficiency is increased, and the use effect is good. The air adsorbed by the molecular sieve tank 3 and the molecular sieve cylinder 4 prepares oxygen, and the oxygen is input into the oxygen storage tank 15 through a pipeline for storage.

[0030] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A nitrogen and oxygen separation device based on molecular sieves, comprising an air compressor (1), characterized in that: An air compression tank (2) is provided on one side of the air compressor (1), and a plurality of molecular sieve tanks (3) are provided on one side of the air compression tank (2). A molecular sieve cartridge (4) is provided between adjacent molecular sieve tanks (3). A docking pipe (9) is connected to one side of the bottom of the molecular sieve tank (3) through an opening. A first flange (10) is fixedly provided on the outer wall of one side of the docking pipe (9). The outer wall of the first flange (10) is provided with first docking holes (11) distributed at equal distances. Second flanges (13) are fixedly provided on the outer walls of both ends of the molecular sieve cartridge (4). The outer wall of one side of the second flange (13) is provided with second docking holes (14) distributed at equal distances. The inner walls of the first docking holes (11) and the second docking holes (14) are provided with matching bolts. A first pipe joint (7) is connected to the top outer wall of the molecular sieve tank (3) through an opening. A second air guide pipe (8) is connected between adjacent first pipe joints (7).

2. The nitrogen and oxygen separation device based on molecular sieve according to claim 1, characterized in that: The output end of the air compressor (1) is connected to the air compression tank (2) through a pipeline.

3. The nitrogen and oxygen separation device based on molecular sieve according to claim 1, characterized in that: One side outer wall of the air compression tank (2) is connected to a first air duct (5) through an opening, a heat exchanger (6) is installed on the outer wall of the first air duct (5), and the other end of the first air duct (5) is connected to a first pipe joint (7) provided on the top of the molecular sieve tank (3).

4. The nitrogen and oxygen separation device based on molecular sieve according to claim 1, characterized in that: One end of the top of the molecular sieve tank (3) is connected to an oxygen storage tank (15) via a first pipe joint (7) using a pipeline, and one side of the bottom of the oxygen storage tank (15) is connected to (16) through an opening, and one end of the outer wall of the (16) is fixedly provided with (17).

5. The nitrogen and oxygen separation device based on molecular sieve according to claim 1, characterized in that: The inner walls of the molecular sieve tank (3) and the molecular sieve cylinder (4) are filled with zeolite molecular sieve.

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