Multi-cavity molecular sieve for air separation device

Abstract

The utility model discloses a multi-cavity molecular sieve for an air separation device. The multi-cavity molecular sieve comprises a screen drum main body and a main shaft, the utility model has the beneficial effects that by adopting the partition plates and the microporous plates, when air is separated, the air inlet pipe is communicated with the air inlet, the air outlet pipe is communicated with the air outlet, and the air enters the screen drum main body through the air inlet and enters the space between the partition plates; when the sodium-based molecular sieve, the lithium-based molecular sieve and the calcium-based molecular sieve are saturated, a worker can rotate a crank, further rotate a main shaft and further rotate a partition plate, so that the saturated sodium-based molecular sieve, the lithium-based molecular sieve and the calcium-based molecular sieve are rotated to be aligned to a discharge pipe; the new sodium-based molecular sieve, the new lithium-based molecular sieve and the new calcium-based molecular sieve are aligned to the air inlet and the air outlet, separation is continued, rapid switching is completed, and the use convenience and the working efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of molecular sieve oxygen production equipment, in particular to a multi-cavity molecular sieve for an air separation device. Background Art

[0002] The process of molecular sieve oxygen production includes passing pressurized raw air into an oxygen separator equipped with molecular sieves, and the molecular sieves adsorb nitrogen, carbon dioxide and other gases in the air. The adsorbed gas is high-concentration oxygen.

[0003] After searching, it was found that the publication number is CN216909755U, and the name is a molecular sieve adsorption oxygen separator with a multi-cavity structure. The application proposes that the oxygen separator in the prior art generally uses a single type of molecular sieve for adsorption, and the oxygen concentration in the gas after adsorption is not ideal. By setting different cavities and filling large-diameter calcium-based molecular sieves, small-diameter calcium-based molecular sieves, sodium-based molecular sieves, and lithium-based molecular sieves in different cavities, the compressed air passes through the above-mentioned molecular sieves in sequence to improve the oxygen concentration in the gas after adsorption separation; and the large-diameter calcium-based molecular sieve and small-diameter calcium-based molecular sieve, as well as the sodium-based molecular sieve and the lithium-based molecular sieve are separated by a filter mesh and a filter cotton, on the one hand, to avoid mixing between different molecular sieves to affect the adsorption effect, and on the other hand, to absorb moisture in the compressed air to further increase the oxygen concentration. However, the application cannot quickly switch after the calcium-based molecular sieve, sodium-based molecular sieve and lithium-based molecular sieve are saturated. The replacement process is more troublesome and time-consuming. The separation work cannot be performed synchronously during replacement, which affects the work efficiency and the continuity and convenience of use. Further improvements can be made.

[0004] Currently, no effective solutions have been proposed for the problems in related technologies. Utility Model Content

[0005] (1) Technical problems solved

[0006] In view of the deficiencies in the prior art, the present invention provides a multi-cavity molecular sieve for an air separation device, which has the advantages of being easy to use and having high working efficiency, thereby solving the problems in the above-mentioned background technology.

[0007] (2) Technical solution

[0008] In order to achieve the above advantages of convenient use and high working efficiency, the specific technical solutions adopted by the utility model are as follows:

[0009] A multi-cavity molecular sieve for an air separation device comprises a sieve drum body and a main shaft, wherein the main shaft is rotatably connected to the interior of the sieve drum body, and a microporous plate is fixedly sleeved on the outer wall of the main shaft, and partition plates are fixedly connected to the surfaces of the microporous plates on both sides of the main shaft. There are multiple partition plates, and there are multiple microporous plates. The microporous plates divide the interior of the sieve drum body into different spaces, and the spaces are respectively filled with sodium-based molecular sieves, lithium-based molecular sieves and calcium-based molecular sieves. An air inlet and an air outlet are respectively provided at both ends of the sieve drum body, and a first filter screen and a second filter screen are fixedly connected to the inner sides of the air inlet and the air outlet, respectively. A feed pipe is connected to the top surface of the sieve drum body, and a discharge pipe is connected to the bottom surface of the sieve drum body.

[0010] Furthermore, the number of the feed pipes and the discharge pipes corresponds to the number of the internal spaces of the screen drum body, and the top opening of the feed pipe and the bottom opening of the discharge pipe are respectively threadedly sleeved with a top cover and a bottom cover.

[0011] Furthermore, a plurality of partition plates are arranged at equal angles along the central axis of the main shaft, and a sealing edge strip is fixedly connected to the edge of the other end of the partition plate, and the sealing edge strip is in sliding contact with the inner wall of the screen drum body.

[0012] Furthermore, a sealing ring is fixedly connected to the outer edge of the microporous plate, and the outer wall of the sealing ring is in sliding contact with the inner wall of the screen drum body.

[0013] Furthermore, the surface of the microporous plate is densely provided with micropores, and the pore size of the micropores is smaller than the minimum particle size of the sodium-based molecular sieve, the lithium-based molecular sieve and the calcium-based molecular sieve.

[0014] Furthermore, one end of the main shaft is fixedly connected to a crank, and the main shaft and the screen drum body are coaxially arranged.

[0015] Furthermore, the air inlet and the air outlet are coaxially arranged, and the air inlet and the air outlet are staggered with respect to the main shaft.

[0016] Furthermore, the main shaft is rotatably connected to both ends of the screen drum body through sealed bearings.

[0017] (3) Beneficial effects

[0018] Compared with the prior art, the present invention provides a multi-cavity molecular sieve for air separation device, which has the following beneficial effects:

[0019] (1) The utility model adopts a partition plate and a microporous plate. There are multiple microporous plates arranged to divide the interior of the sieve drum into spaces with different spacings. The spaces with different spacings are filled with sodium-based molecular sieves, lithium-based molecular sieves and calcium-based molecular sieves from left to right respectively. When separating the air, the air inlet pipe is connected to the air inlet, and the air outlet pipe is connected to the air outlet. The air enters the interior of the sieve drum through the air inlet and enters between the partition plates. After being separated by the sodium-based molecular sieve, lithium-based molecular sieve and calcium-based molecular sieve, it flows out of the air outlet. When the sodium-based molecular sieve, lithium-based molecular sieve and calcium-based molecular sieve are saturated, the staff can turn the crank, then turn the main shaft, and then turn the partition plate to rotate the saturated sodium-based molecular sieve, lithium-based molecular sieve and calcium-based molecular sieve to align with the discharge pipe, align the new sodium-based molecular sieve, lithium-based molecular sieve and calcium-based molecular sieve with the air inlet and outlet, continue the separation work, complete the rapid switching, and improve the convenience of use and work efficiency.

[0020] (2) The present invention adopts a feed pipe located on the top surface of the sieve drum body and a discharge pipe located on the bottom surface of the sieve drum. The staff can open the bottom cover, and the saturated sodium-based molecular sieve, lithium-based molecular sieve and calcium-based molecular sieve can flow out of the sieve drum body to complete the discharge. At the same time, the staff can open the top cover and reload new sodium-based molecular sieve, lithium-based molecular sieve and calcium-based molecular sieve between the partition plates. The replacement of the sodium-based molecular sieve, lithium-based molecular sieve and calcium-based molecular sieve is completed during the separation process, avoiding the problem that traditional equipment cannot separate the air synchronously when replacing the sodium-based molecular sieve, lithium-based molecular sieve and calcium-based molecular sieve, thereby improving work efficiency and convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention 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 of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic diagram of the internal structure of a multi-cavity molecular sieve for an air separation device proposed in the present invention;

[0023] Figure 2 This is a cross-sectional view of a multi-cavity molecular sieve for an air separation device proposed by the present invention;

[0024] Figure 3 This is a schematic diagram of the external structure of the front elevation of the multi-cavity molecular sieve for the air separation device proposed by the present invention;

[0025] Figure 4 The utility model is a schematic diagram of the rear elevation external structure of a multi-cavity molecular sieve for an air separation device.

[0026] In the picture:

[0027] 1. Screen drum body; 2. Main shaft; 3. Partition plate; 4. Sealing edge strip; 5. Microporous plate; 6. Sealing ring; 7. Crank handle; 8. Feed pipe; 9. Top cover; 10. Discharge pipe; 11. Bottom cover; 12. Air inlet; 13. First filter; 14. Air outlet; 15. Second filter. DETAILED DESCRIPTION

[0028] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. By referring to these contents, ordinary technicians in this field should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0029] According to an embodiment of the present invention, a multi-cavity molecular sieve for an air separation device is provided.

[0030] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. Figure 1-4As shown, according to the embodiment of the utility model, a multi-cavity molecular sieve for an air separation device includes a sieve drum body 1 and a main shaft 2. The main shaft 2 is rotatably connected to the inside of the sieve drum body 1, and a microporous plate 5 is fixedly sleeved on the outer wall of the main shaft 2. The two sides of the microporous plate 5 are located on the outer wall of the main shaft 2 and are fixedly connected to the partition plate 3. There are multiple partition plates 3 and multiple microporous plates 5. The microporous plates 5 divide the inside of the sieve drum body 1 into different spaces, and the spaces are respectively filled with sodium-based molecular sieves, lithium-based molecular sieves and calcium-based molecular sieves. Molecular sieve is a common material in this field and will not be described in detail here. An air inlet 12 and an air outlet 14 are respectively provided at both ends of the sieve drum body 1, and a first filter screen 13 and a second filter screen 15 are fixedly connected to the inside of the air inlet 12 and the air outlet 14, respectively. A feed pipe 8 is connected to the top surface of the sieve drum body 1, and a discharge pipe 10 is connected to the bottom surface of the sieve drum body 1. The pore size of the first filter screen 13 and the second filter screen 15 are smaller than the particle size of the sodium-based molecular sieve, the lithium-based molecular sieve and the calcium-based molecular sieve to avoid the sodium-based molecular sieve. The sieve, lithium-based molecular sieve and calcium-based molecular sieve enter the air inlet pipe and the exhaust pipe. A plurality of microporous plates 5 are arranged to divide the interior of the sieve drum body 1 into spaces with different spacings. The spaces with different spacings are filled with sodium-based molecular sieves, lithium-based molecular sieves and calcium-based molecular sieves from left to right. When separating the air, the air inlet pipe is connected to the air inlet 12, and the air outlet pipe is connected to the air outlet 14. The air enters the interior of the sieve drum body 1 through the air inlet 12, enters between the partition plates 3, passes through the sodium-based molecular sieve, lithium-based molecular sieve and calcium-based molecular sieve, and enters the exhaust pipe. After the sodium-based molecular sieve and the calcium-based molecular sieve are separated, they flow out of the air outlet 14. When the sodium-based molecular sieve, the lithium-based molecular sieve and the calcium-based molecular sieve are saturated, the staff can rotate the crank 7, and then rotate the main shaft 2, and then rotate the partition plate 3 to align the saturated sodium-based molecular sieve, the lithium-based molecular sieve and the calcium-based molecular sieve with the discharge pipe 10, and align the new sodium-based molecular sieve, the lithium-based molecular sieve and the calcium-based molecular sieve with the air inlet 12 and the air outlet 14, and continue the separation work to complete the rapid switching, thereby improving the convenience of use and work efficiency.

[0031] In one embodiment, the number of feed pipes 8 and discharge pipes 10 corresponds to the number of internal spaces of the sieve drum body 1, and the top opening of the feed pipe 8 and the bottom opening of the discharge pipe 10 are respectively threadedly connected with a top cover 9 and a bottom cover 11. The staff can open the bottom cover 11, and the saturated sodium-based molecular sieve, lithium-based molecular sieve and calcium-based molecular sieve can flow out of the sieve drum body 1, completing the discharge. At the same time, the staff can open the top cover 9 and reload new sodium-based molecular sieve, lithium-based molecular sieve and calcium-based molecular sieve between the partition plates 3. The replacement of the sodium-based molecular sieve, lithium-based molecular sieve and calcium-based molecular sieve is completed during the separation process, avoiding the problem that traditional equipment cannot separate the air synchronously when replacing the sodium-based molecular sieve, lithium-based molecular sieve and calcium-based molecular sieve, thereby improving work efficiency and convenience of use.

[0032] In one embodiment, multiple partition plates 3 are arranged at equal angles along the central axis of the main shaft 2, and a sealing edge strip 4 is fixedly connected to the edge of the other end of the partition plate 3, and the sealing edge strip 4 is in sliding contact with the inner wall of the sieve drum body 1. The sealing edge strip 4 plays a role of sealing and isolation to prevent air from entering the interior of other non-working sodium-based molecular sieves, lithium-based molecular sieves and calcium-based molecular sieves.

[0033] In one embodiment, a sealing ring 6 is fixedly connected to the outer edge of the microporous plate 5, and the outer wall of the sealing ring 6 slides against the inner wall of the sieve cylinder body 1. The sealing ring 6 plays a role of sealing and isolation to prevent air from entering the interior of other non-working sodium-based molecular sieves, lithium-based molecular sieves and calcium-based molecular sieves.

[0034] In one embodiment, the surface of the microporous plate 5 is densely provided with micropores, and the pore size of the micropores is smaller than the minimum particle size of the sodium-based molecular sieve, the lithium-based molecular sieve and the calcium-based molecular sieve, thereby avoiding the doping disorder of the sodium-based molecular sieve, the lithium-based molecular sieve and the calcium-based molecular sieve while ventilating.

[0035] In one embodiment, a crank 7 is fixedly connected to one end of the main shaft 2 , and the main shaft 2 is coaxially arranged with the screen drum body 1 , and the staff rotates the main shaft 2 at the edge of the crank 7 .

[0036] In one embodiment, the air inlet 12 and the air outlet 14 are coaxially arranged, and the air inlet 12 and the air outlet 14 are staggered with respect to the main shaft 2 , and the air inlet 12 and the air outlet 14 are arranged between the partition plates 3 .

[0037] In one embodiment, the main shaft 2 is rotatably connected to both ends of the screen drum body 1 through sealed bearings to avoid air leakage.

[0038] Working principle:

[0039] When separating the air, the air inlet pipe is connected to the air inlet 12, and the air outlet pipe is connected to the air outlet 14. The air enters the interior of the sieve drum body 1 through the air inlet 12, enters between the partition plates 3, and flows out of the air outlet 14 after being separated by the sodium-based molecular sieve, the lithium-based molecular sieve and the calcium-based molecular sieve. When the sodium-based molecular sieve, the lithium-based molecular sieve and the calcium-based molecular sieve are saturated, the staff can rotate the crank 7, and then rotate the main shaft 2, and then rotate the partition plate 3 to rotate the saturated sodium-based molecular sieve, the lithium-based molecular sieve and the calcium-based molecular sieve to align with the discharge pipe 10, and align the new sodium-based molecular sieve, the lithium-based molecular sieve and the calcium-based molecular sieve with the air inlet 12 and the air outlet 14. , continue the separation work, complete the rapid switching, improve the convenience of use and work efficiency, at the same time, the staff can open the bottom cover 11, the saturated sodium-based molecular sieve, lithium-based molecular sieve and calcium-based molecular sieve can flow out of the sieve drum body 1, completing the discharge, at the same time, the staff can open the top cover 9, and reload the new sodium-based molecular sieve, lithium-based molecular sieve and calcium-based molecular sieve between the partition plates 3, and complete the replacement of the sodium-based molecular sieve, lithium-based molecular sieve and calcium-based molecular sieve during the separation process, avoiding the problem that traditional equipment cannot separate the air synchronously when replacing the sodium-based molecular sieve, lithium-based molecular sieve and calcium-based molecular sieve, thereby improving work efficiency and convenience of use.

[0040] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multi-cavity molecular sieve for an air separation device, characterized in that: The invention comprises a sieve drum body (1) and a main shaft (2), wherein the main shaft (2) is rotatably connected to the inside of the sieve drum body (1), and a microporous plate (5) is fixedly sleeved on the outer wall of the main shaft (2), and partition plates (3) are fixedly connected to the outer wall of the main shaft (2) on both sides of the microporous plate (5), wherein a plurality of partition plates (3) are arranged, and a plurality of microporous plates (5) are arranged, and the microporous plates (5) divide the inside of the sieve drum body (1) into different spaces, and the spaces are The interior is filled with sodium-based molecular sieve, lithium-based molecular sieve and calcium-based molecular sieve respectively. An air inlet (12) and an air outlet (14) are respectively opened at both ends of the sieve drum body (1), and a first filter screen (13) and a second filter screen (15) are respectively fixedly connected to the inner sides of the air inlet (12) and the air outlet (14). A feed pipe (8) is connected to the top surface of the sieve drum body (1), and a discharge pipe (10) is connected to the bottom surface of the sieve drum body (1).

2. The multi-cavity molecular sieve for air separation device according to claim 1, characterized in that: The number of the feed pipes (8) and the discharge pipes (10) corresponds to the number of spaces inside the screen drum body (1), and the top opening of the feed pipe (8) and the bottom opening of the discharge pipe (10) are respectively threadedly sleeved with a top cover (9) and a bottom cover (11).

3. The multi-cavity molecular sieve for air separation device according to claim 1, characterized in that: A plurality of partition plates (3) are arranged at equal angles along the central axis of the main shaft (2), and a sealing edge strip (4) is fixedly connected to the edge of the other end of the partition plate (3), and the sealing edge strip (4) is in sliding contact with the inner wall of the screen drum body (1).

4. The multi-cavity molecular sieve for air separation device according to claim 1, characterized in that: A sealing ring (6) is fixedly connected to the outer edge of the microporous plate (5), and the outer wall of the sealing ring (6) is in sliding contact with the inner wall of the sieve drum body (1).

5. The multi-cavity molecular sieve for air separation device according to claim 1, characterized in that: The surface of the microporous plate (5) is densely provided with micropores, and the pore diameter of the micropores is smaller than the minimum particle diameter of the sodium-based molecular sieve, the lithium-based molecular sieve and the calcium-based molecular sieve.

6. The multi-cavity molecular sieve for air separation device according to claim 1, characterized in that: One end of the main shaft (2) is fixedly connected to a crank (7), and the main shaft (2) and the screen drum body (1) are coaxially arranged.

7. The multi-cavity molecular sieve for air separation device according to claim 1, characterized in that: The air inlet (12) and the air outlet (14) are coaxially arranged, and the air inlet (12) and the air outlet (14) are staggered with respect to the main shaft (2).

8. The multi-cavity molecular sieve for air separation device according to claim 1, characterized in that: The main shaft (2) is rotatably connected to both ends of the screen drum body (1) via sealed bearings.

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