Adsorption tower for four-tower eight-step oxygen production method

Abstract

The utility model relates to the technical field of adsorption towers, in particular to an adsorption tower for a four-tower eight-step oxygen production method, which comprises an adsorption tower main body, a molecular sieve is fixedly connected inside the adsorption tower main body, one side of the adsorption tower main body is fixedly connected with an air inlet shell, one side of the air inlet shell is fixedly connected with a connecting disc, and the other side of the air inlet shell is fixedly connected with the connecting disc. A quick replacement assembly is inserted into the air inlet shell; compared with the prior art, the water absorbing device has the advantages that by arranging the quick replacement assembly, an operator can conveniently and quickly replace the water absorbing agent when the water absorbing agent needs to be replaced, the problem that the operator is inconvenient to replace the water absorbing agent is solved, the working efficiency of the operator is improved, and the locking assembly is further arranged, so that the water absorbing agent can be conveniently and quickly replaced. The quick replacement assembly is locked and fixed through the locking assembly, so that the problem that the normal work of the adsorption tower is influenced as the quick replacement assembly is not mounted in place by an operator is solved, and the working stability of the adsorption tower is favorably improved.

Description

Technical Field

[0001] This utility model relates to the field of adsorption tower technology, and in particular to an adsorption tower for a four-tower, eight-step oxygen production method. Background Technology

[0002] Oxygen production utilizes the adsorption properties of molecular sieves. Through physical principles, a large-displacement oil-free compressor is used to separate nitrogen and oxygen from the air, ultimately obtaining a high concentration of oxygen. The oxygen production process employs a four-tower, eight-step oxygen production method in conjunction with an adsorption tower, which is a crucial component of the oxygen production process.

[0003] Currently, when the absorbent in an adsorption tower needs to be replaced due to excessive water absorption after prolonged use, it is inconvenient for operators to do so, resulting in low work efficiency. Furthermore, improper installation of quick-change components by operators can affect the normal operation of the adsorption tower, thus impacting its stability.

[0004] To address this issue, this utility model proposes an adsorption tower for a four-tower, eight-step oxygen production method. Utility Model Content

[0005] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0006] Therefore, one objective of this utility model is to provide an adsorption tower for a four-tower eight-step oxygen production method, comprising an adsorption tower body, a molecular sieve fixedly connected inside the adsorption tower body, an air inlet shell fixedly connected to one side of the adsorption tower body, a connecting plate fixedly connected to one side of the air inlet shell, a quick-replacement component inserted inside the air inlet shell, and a locking component fixedly connected to one side of the air inlet shell, the locking component comprising two guide plates and a connecting plate.

[0007] The quick-change assembly includes a replacement block, the outside of which is inserted into the inside of the intake housing. A handle is fixedly connected to one side of the replacement block, and an insert plate is inserted into the inside of the replacement block. A pull handle is fixedly connected to one side of the insert plate, and a first perforated plate is fixedly connected to the inside of the insert plate. A water-absorbing agent is placed on one side of the first perforated plate, and a rubber sealing gasket is fixedly connected to the outside of the replacement block and the insert plate.

[0008] The technical effect achieved by the above scheme is that, under pressure, the molecular sieve absorbs nitrogen from the air and then discharges air with a higher oxygen concentration into the interior of the adsorption tower body below the molecular sieve.

[0009] Preferably, in any of the above embodiments, a second perforated plate is fixedly connected inside the air intake housing, and the second perforated plate is disposed above the replacement block.

[0010] Preferably, as described in any of the above embodiments, an oxygen exhaust pipe is fixedly connected to the bottom of the adsorption tower body, and a nitrogen exhaust pipe is fixedly connected to the top of the adsorption tower body.

[0011] Preferably, one side of each of the two guide plates is fixedly connected to one side of the air intake shell, and one side of the connecting plate is fixedly connected to one side of the air intake shell.

[0012] Preferably, in any of the above embodiments, the connecting plate has an internal threaded connection to a threaded rod, a rotating block is fixedly connected to one side of the threaded rod, and a limiting rotating block is fixedly connected to one side of the threaded rod.

[0013] The technical effect achieved by adopting the above solution is that the operator can rotate the rotating block, which will cause the threaded rod to rotate.

[0014] Preferably, in any of the above embodiments, a movable plate is rotatably connected to the outside of the limiting block, and two limiting rods are fixedly connected to one side of the movable plate. The outside of the two limiting rods is slidably connected to the inside of the connecting plate, and a limiting plate is fixedly connected to one side of each of the two limiting rods.

[0015] Preferably, one side of the movable plate is fixedly connected to a locking plate, and the outside of the locking plate is slidably connected to the inside of the two guide plates.

[0016] The technical effect achieved by adopting the above solution is that the locking plate is restricted by two guide plates, so that the locking plate will be in close contact with one side of the air intake shell and the replacement block when it moves.

[0017] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0018] 1. By incorporating a quick-change component that facilitates the replacement of absorbent, operators can easily and quickly replace the absorbent when needed. Operators pull the handle to move the replacement block, which in turn moves the insert plate and the absorbent on it out of the air intake housing. A collection bag or similar item is then placed below. Pulling the handle again moves the insert plate out of the replacement block, causing it to move the first perforated plate. The absorbent on the first perforated plate then falls through the replacement block into the collection bag or similar item prepared by the operator. This solves the problem of inconvenience when replacing absorbent and improves operator efficiency.

[0019] 2. A locking assembly is also provided to lock and secure the quick-change assembly. When replacing the absorbent, the operator rotates the rotating block, which drives the threaded rod to rotate. The threaded rod moves inside the connecting plate during rotation, causing the moving plate and locking plate to move as well. The operator can then use the quick-change assembly to replace the absorbent in the replacement block. After replacing the absorbent, the locking plate is moved to lock and secure the replacement block and insert plate. This solves the problem of improper installation of the quick-change assembly affecting the normal operation of the adsorption tower, thus improving the stability of the adsorption tower.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic diagram of the overall structure of an adsorption tower for a four-tower, eight-step oxygen production method proposed in this utility model.

[0023] Figure 2 This is a partial cross-sectional view of the adsorption tower used in the four-tower eight-step oxygen production method proposed in this utility model.

[0024] Figure 3 This is a schematic diagram of the working structure of an adsorption tower for a four-tower, eight-step oxygen production method proposed in this utility model.

[0025] Figure 4 This is a schematic diagram of the quick-change component structure of the adsorption tower for the four-tower eight-step oxygen production method proposed in this utility model.

[0026] Figure 5 This is a partial structural diagram of the adsorption tower used in the four-tower eight-step oxygen production method proposed in this utility model.

[0027] Figure 6 This is a schematic diagram of the structure of the adsorption tower locking assembly for the four-tower eight-step oxygen production method proposed in this utility model.

[0028] Figure 7 This is a schematic diagram of the second partial structure of an adsorption tower used in a four-tower, eight-step oxygen production method proposed in this utility model.

[0029] In the diagram: 1. Adsorption tower body; 101. Molecular sieve; 102. Oxygen exhaust pipe; 103. Nitrogen exhaust pipe; 2. Inlet shell; 201. Connecting plate; 202. Second orifice plate; 3. Quick change component; 301. Change block; 302. Handle; 303. Insert plate; 304. Pull handle; 305. First orifice plate; 306. Desiccant; 4. Locking component; 401. Guide plate; 402. Connecting plate; 403. Threaded rod; 404. Rotating block; 405. Limiting rotating block; 406. Moving plate; 407. Limiting rod; 408. Limiting plate; 409. Locking plate. Detailed Implementation

[0030] Example 1: As Figures 1 to 7 As shown, an adsorption tower for a four-tower eight-step oxygen production method includes an adsorption tower body 1. The four-tower eight-step oxygen production method is currently very mature, requiring four adsorption tower bodies 1. Its operating principle is described in reference [reference needed]. Figure 3 As shown:

[0031] Step 1: The air compressor fills the first adsorption tower with air. At the same time, the second adsorption tower is enriched with oxygen and purged with nitrogen. Meanwhile, the third adsorption tower fills the second adsorption tower with oxygen to help it purge nitrogen. The fourth adsorption tower purges oxygen and discharges the treated oxygen into the oxygen storage tank.

[0032] Step 2: The first adsorption tower discharges oxygen and the treated oxygen is discharged into the oxygen storage tank. At this time, the second adsorption tower is enriched with oxygen and pressurized, the third adsorption tower discharges nitrogen, and the fourth adsorption tower fills the second adsorption tower with oxygen to enrich and pressurize the second adsorption tower.

[0033] Step 3: The first adsorption tower continues to remove oxygen. At this time, the air compressor fills the second adsorption tower with air, and the third adsorption tower is enriched with oxygen to remove nitrogen. Meanwhile, the fourth adsorption tower fills the third adsorption tower with oxygen to help it remove nitrogen.

[0034] Step 4: The first adsorption tower fills the third adsorption tower with oxygen, while the second adsorption tower discharges the treated oxygen into the oxygen storage tank. The third adsorption tower is then enriched with oxygen and pressurized, and the fourth adsorption tower is purged with nitrogen.

[0035] Step 5: The first adsorption tower adds oxygen to the fourth adsorption tower to help it remove nitrogen. At this time, the second adsorption tower continues to remove oxygen, the third adsorption tower is filled with gas, and the fourth adsorption tower is enriched with oxygen to remove nitrogen.

[0036] Step 6: The first adsorption tower removes nitrogen, while the second adsorption tower fills the fourth adsorption tower with oxygen. The third adsorption tower discharges the treated oxygen into the oxygen storage tank, and the fourth adsorption tower is then filled with oxygen and pressurized.

[0037] Step 7: The first adsorption tower enriches oxygen and removes nitrogen, while the second adsorption tower fills the first adsorption tower with oxygen to help it remove nitrogen. At this time, the third adsorption tower discharges the treated oxygen into the oxygen storage tank, and the fourth adsorption tower is filled with gas.

[0038] Step 8: The first adsorption tower is pressurized with oxygen, while the second adsorption tower is purging nitrogen. At the same time, the third adsorption tower is purging oxygen into the first adsorption tower, and the fourth adsorption tower is purging oxygen into the oxygen storage tank.

[0039] It is important to note that: air filling refers to the air compressor adding pressurized air into the adsorption tower through the air inlet shell 2; oxygen venting refers to the treatment of oxygen being discharged into the oxygen storage tank; nitrogen venting refers to the normal opening of the nitrogen venting valve to vent nitrogen; oxygen-enriched nitrogen venting refers to the introduction of oxygen during the normal nitrogen venting process to assist the adsorption tower in its nitrogen venting work; and oxygen-enriched pressurization refers to pressurizing the adsorption tower after oxygen-enriched nitrogen venting to maintain the normal internal pressure of the adsorption tower.

[0040] Then repeat the first step to continue the work. Since the structure and working principle of the four towers are the same, this utility model only shows the structure of one tower and will not affect the description of the adsorption tower. A molecular sieve 101 is fixedly connected inside the adsorption tower body 1. Under pressure, the molecular sieve 101 will absorb nitrogen in the air and then discharge the air with a higher oxygen concentration to the adsorption tower body 1 below the molecular sieve 101. The molecular sieve 101 is a known technology and this utility model has not improved it, so it will not be described in detail here. An air inlet shell 2 is fixedly connected to one side of the adsorption tower body 1. A connecting plate 201 is fixedly connected to one side of the air inlet shell 2. The air inlet shell 2 is connected to an external air compressor through the connecting plate 201, so that the air compressor pressurizes the external air and adds it into the adsorption tower body 1 through the air inlet shell 2. A quick replacement component 3 is inserted into the inside of the air inlet shell 2. A locking component 4 is fixedly connected to one side of the air inlet shell 2. The locking component 4 includes two guide plates 401 and a connecting plate 402.

[0041] The quick-change assembly 3 includes a replacement block 301, the outside of which is inserted into the inside of the intake housing 2. A handle 302 is fixedly connected to one side of the replacement block 301. By pulling the handle 302, the operator moves the replacement block 301, causing the replacement block 301 to move the insert plate 303 and the absorbent 306 on the insert plate 303 out of the inside of the intake housing 2. An insert plate 303 is inserted into the inside of the replacement block 301. A pull handle 304 is fixedly connected to one side of the insert plate 303. By pulling the pull handle 304, the operator moves the insert plate 303 out of the inside of the replacement block 301. At this time, the insert plate 303 will move the first perforated plate 30. 5. The insertion plate 303 is moved. A first perforated plate 305 is fixedly connected inside the insertion plate 303. A water absorbent 306 is placed on one side of the first perforated plate 305. When the adsorption tower is working normally, external air is pressurized by an air compressor and introduced into the adsorption tower body 1. At this time, the air will pass through the second perforated plate 202 and enter the interior of the water absorbent 306. The water absorbent 306 absorbs the water molecules in the air. After absorption, the air passes through the first perforated plate 305 and enters the area below the first perforated plate 305. Subsequently, the air will enter the interior of the molecular sieve 101 in the adsorption tower body 1. A rubber sealing gasket is fixedly connected to the outside of the replacement block 301 and the insertion plate 303. The rubber sealing gasket ensures the connection between the replacement block 301 and the insertion plate. When 303 enters the air inlet shell 2, ensure the air inlet shell 2 is sealed. If the adsorption tower absorbs too much moisture after prolonged use by the absorbent 306, stop operating. Operators can loosen the quick-change component 3 using the locking component 4, then pull the handle 302 to move the replacement block 301. This causes the replacement block 301 to move the insert plate 303 and the absorbent 306 on it out of the air inlet shell 2. Then, place collection bags or similar items below, and pull the handle 304. This causes the handle 304 to move the insert plate 303 out of the replacement block 301, which in turn moves the first perforated plate 305. The absorbent 306 on the first perforated plate 305 will fall from the first perforated plate 305 through the replacement block 301 into the collection bag or other items prepared in advance by the operator. After all the absorbent 306 has fallen, the insertion plate 303 and the first perforated plate 305 are similarly returned to their positions and inserted into the interior of the replacement block 301. Then, the operator adds new absorbent 306 into the interior of the replacement block 301 and the first perforated plate 305. Next, the replacement block 301 containing the replaced absorbent 306 is inserted into the interior of the air intake shell 2. Then, the quick replacement assembly 3 is locked by the locking assembly 4 to prevent the operator from not installing the quick replacement assembly 3 in place, and at the same time, to keep the quick replacement assembly 3 fixed.

[0042] A second perforated plate 202 is fixedly connected inside the air intake housing 2, and the second perforated plate 202 is located above the replacement block 301.

[0043] An oxygen discharge pipe 102 is fixedly connected to the bottom of the adsorption tower body 1, and a nitrogen discharge pipe 103 is fixedly connected to the top of the adsorption tower body 1. Both the oxygen discharge pipe 102 and the nitrogen discharge pipe 103 are equipped with valves. After the adsorption tower finishes producing oxygen, the valve of the oxygen discharge pipe 102 is opened, allowing oxygen to be discharged through the oxygen discharge pipe 102 to the oxygen storage tank of the external equipment. Then, the valve of the nitrogen discharge pipe 103 is opened to discharge nitrogen from the nitrogen discharge pipe 103.

[0044] One side of each of the two guide plates 401 is fixedly connected to one side of the air intake shell 2, and one side of the connecting plate 402 is fixedly connected to one side of the air intake shell 2.

[0045] The connecting plate 402 has a threaded rod 403 internally threaded. A rotating block 404 is fixedly connected to one side of the threaded rod 403, and a limiting rotating block 405 is fixedly connected to one side of the threaded rod 403. The operator rotates the rotating block 404, which causes the threaded rod 403 to rotate. Because the threaded rod 403 is externally threaded to the internal thread of the connecting plate 402, the threaded rod 403 moves inside the connecting plate 402 when it rotates.

[0046] A movable plate 406 is rotatably connected to the outside of the limiting rotating block 405. When the threaded rod 403 rotates, it drives the limiting rotating block 405 to rotate inside the movable plate 406. At the same time, when the threaded rod 403 moves inside the connecting plate 402, it drives the movable plate 406 to move through the limiting rotating block 405. Two limiting rods 407 are fixedly connected to one side of the movable plate 406. The outside of the two limiting rods 407 is slidably connected to the inside of the connecting plate 402. A limiting plate 408 is fixedly connected to one side of each of the two limiting rods 407. The two limiting rods 407 restrict the movable plate 406 to prevent it from shaking when the limiting rotating block 405 rotates, thereby improving the stability of the movable plate 406 during movement. The limiting plate 408 limits the movement distance of the movable plate 406 to prevent it from moving excessively.

[0047] A locking plate 409 is fixedly connected to one side of the movable plate 406. The outer side of the locking plate 409 is slidably connected to the inner side of two guide plates 401. The two guide plates 401 restrict and guide the locking plate 409, so that the locking plate 409 will be in close contact with one side of the air intake shell 2 and the replacement block 301 when moving. This locks and fixes the quick-change assembly 3, which not only avoids the problem of the operator not installing the quick-change assembly 3 in place, but also avoids the problem of the quick-change assembly 3 changing position when encountering vibration. When the absorbent 306 is applied... During replacement, the operator rotates the rotating block 404, which causes the threaded rod 403 to rotate. When the threaded rod 403 rotates, it moves inside the connecting plate 402, causing the moving plate 406 and the locking plate 409 to move. Then, the operator can use the quick-change assembly 3 to replace the absorbent 306 in the replacement block 301. After the absorbent 306 is replaced, the locking plate 409 is moved in the same way to lock and fix the replacement block 301 and the insert plate 303.

[0048] An adsorption tower used in a four-tower, eight-step oxygen production process operates on the following principle:

[0049] During normal operation of the adsorption tower, external air is pressurized by an air compressor and introduced into the adsorption tower body 1. The air then passes through the second perforated plate 202 into the absorbent 306, where it absorbs water molecules from the air. After absorption, the air passes through the first perforated plate 305 and then into the molecular sieve 101. Under pressurization, the molecular sieve 101 absorbs nitrogen from the air, and then discharges the air with a higher oxygen concentration into the adsorption tower body 1 below the molecular sieve 101. Valves are installed inside both the oxygen discharge pipe 102 and the nitrogen discharge pipe 103. After the adsorption tower completes its oxygen production process, the oxygen discharge pipe 102... The valve is opened, allowing oxygen to be discharged through the oxygen discharge pipe 102 to the oxygen storage tank of the external equipment. Then, the valve on the nitrogen discharge pipe 103 is opened to discharge nitrogen from the nitrogen discharge pipe 103. When the adsorption tower absorbs too much moisture from the absorbent 306 after prolonged use, the adsorption tower stops operating. The operator can loosen the quick-change component 3 using the locking component 4, then pull the handle 302 to move the replacement block 301, causing the replacement block 301 to move the insert plate 303 and the absorbent 306 on the insert plate 303 out of the air inlet shell 2. Then, a collection bag or similar item is placed below, and then the pull handle 304 is pulled, causing the pull handle 304 to move the insert plate 303. The insert plate 303 moves the first perforated plate 305 after the replacement block 301 is inserted, causing the insert plate 303 to move. At this time, the absorbent 306 on the first perforated plate 305 falls through the replacement block 301 into a collection bag or similar item prepared by the operator. After all the absorbent 306 has fallen, the insert plate 303 and the first perforated plate 305 are returned to their original positions and inserted into the replacement block 301. Then, the operator adds new absorbent 306 to the replacement block 301 and the first perforated plate 305. Next, the replacement block 301 containing the replaced absorbent 306 is inserted into the air intake housing 2. Finally, the locking assembly 4 locks the quick-change assembly 3 to prevent operator interference. Even if the quick-change assembly 3 is not installed in place, it can still be fixed. When replacing the absorbent 306, the operator rotates the rotating block 404, which drives the threaded rod 403 to rotate. At this time, the threaded rod 403 moves inside the connecting plate 402, causing the moving plate 406 and the locking plate 409 to move. Then, the operator can use the quick-change assembly 3 to replace the absorbent 306 in the replacement block 301. After the absorbent 306 is replaced, the locking plate 409 is moved in the same way to lock and fix the replacement block 301 and the insert plate 303.

[0050] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adsorption column for use in a four-column eight-step oxygen process, characterized by: Including the adsorption tower body (1), the inside fixed connection of adsorption tower body (1) has a molecular sieve (101), one side of adsorption tower body (1) is fixedly connected with an air inlet shell (2), one side of air inlet shell (2) is fixedly connected with a connecting disc (201), the inside of air inlet shell (2) is inserted with a quick replacement assembly (3), one side of air inlet shell (2) is fixedly connected with a locking assembly (4), the locking assembly (4) includes two guide plates (401) and a connecting plate (402); The quick replacement assembly (3) includes a replacement block (301), the outside of replacement block (301) is inserted with the inside of air inlet shell (2), one side of replacement block (301) is fixedly connected with a handle (302), the inside of replacement block (301) is inserted with a plug-in plate (303), one side of plug-in plate (303) is fixedly connected with a pull handle (304), the inside of plug-in plate (303) is fixedly connected with a first hole plate (305), one side of first hole plate (305) is placed with a water absorbent (306), the outside of replacement block (301) and plug-in plate (303) is fixedly connected with a rubber sealing gasket.

2. The adsorption column for a four-column eight-step oxygen production method according to claim 1, characterized by: The inside of air inlet shell (2) is fixedly connected with a second hole plate (202), the second hole plate (202) is arranged above the replacement block (301).

3. The adsorption column for a four-column eight-step oxygen production method according to claim 2, characterized by: The bottom of adsorption tower body (1) is fixedly connected with an oxygen discharge pipe (102), and the top of adsorption tower body (1) is fixedly connected with a nitrogen discharge pipe (103).

4. The adsorption column for a four-column eight-step oxygen production method according to claim 1, characterized by: One side of the two guide plates (401) is fixedly connected with one side of the air inlet shell (2), and one side of the connecting plate (402) is fixedly connected with one side of the air inlet shell (2).

5. The adsorption column for a four-column eight-step oxygen production method according to claim 4, characterized by: The inside of the connecting plate (402) is threadedly connected with a threaded rod (403), one side of the threaded rod (403) is fixedly connected with a rotating block (404), and one side of the threaded rod (403) is fixedly connected with a limiting rotating block (405).

6. The adsorption column for a four-column eight-step oxygen production method according to claim 5, characterized by: The outside of the limiting rotating block (405) is rotatably connected with a moving plate (406), one side of the moving plate (406) is fixedly connected with two limiting rods (407), and the outside of the two limiting rods (407) is slidably connected with the inside of the connecting plate (402). One side of the two limiting rods (407) is fixedly connected with a limiting plate (408).

7. The adsorption column for a four-column eight-step oxygen production method according to claim 6, characterized by: One side of the moving plate (406) is fixedly connected with a locking plate (409), and the outside of the locking plate (409) is slidably connected with the inside of the two guide plates (401).

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