Recovery device for oxygen diffused by oxygen tank

Abstract

The utility model provides an oxygen tank diffused oxygen recovery device, which belongs to the technical field of oxygen recovery, and comprises a liquid oxygen storage tank, a heat exchanger, a buffer tank and a compressor which are sequentially connected through a plurality of connecting pipelines, and further comprises an exhaust component, a plurality of groups of drainage components and a drying component, the exhaust assembly is correspondingly communicated with the last connecting pipeline on the oxygen circulation path, and an exhaust port with an upward opening is formed in the exhaust assembly; the multiple groups of drainage assemblies are in one-to-one correspondence with the multiple connecting pipelines and are communicated with the multiple connecting pipelines, and each group of drainage assembly is provided with a drainage opening with a downward opening; the drying assembly is arranged at the exhaust end of the liquid oxygen storage tank and communicates with a connecting pipeline between the liquid oxygen storage tank and the heat exchanger. The exhaust port is used for exhausting pre-stored gas; and the water outlet is used for discharging condensate water. According to the oxygen tank diffused oxygen recovery device, reserved gas in the device can be conveniently discharged, condensate water generated in the recovery process can be timely discharged, and the quality of oxygen recovery is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of oxygen recovery, and more specifically relates to an oxygen recovery device for dispersing oxygen from an oxygen tank. Background Art

[0002] Liquid oxygen storage tanks are mainly used to store liquid oxygen, but such liquid oxygen storage tanks are usually atmospheric pressure storage tanks with low working pressure. Therefore, part of the liquid oxygen inside will be vaporized to form oxygen, and the excess oxygen needs to be discharged for safety reasons. However, directly releasing the high-purity oxygen stored in the liquid oxygen storage tank into the air will cause a waste of resources, and the subsequent use of oxygen will require re-production to make up for the deficit.

[0003] In the prior art, a recovery device is often used to recover the released oxygen. However, since air is usually pre-stored in the recovery device, the concentration of the recovered oxygen will decrease, resulting in a decrease in the quality of the oxygen. In addition, after the released low-temperature oxygen comes into contact with the room-temperature pre-stored gas in the recovery device, condensation water is easily formed in the pipeline. The accumulation of condensation water can easily cause bacteria to grow inside the pipeline, thereby reducing product quality. Utility Model Content

[0004] The utility model aims to provide an oxygen recovery device for dispersing oxygen from an oxygen tank, aiming to solve the technical problem that the pre-stored gas in the existing oxygen recovery device is mixed with the recovered oxygen, resulting in reduced quality of the recovered oxygen product.

[0005] To achieve the above object, the technical solution adopted by the utility model is: to provide an oxygen recovery device for dispersing oxygen from an oxygen tank, comprising a liquid oxygen storage tank, a heat exchanger, a buffer tank and a compressor connected in sequence through a plurality of connecting pipes, wherein the compressor is used to deliver pressurized oxygen to a user end; the oxygen recovery device for dispersing oxygen from an oxygen tank also includes:

[0006] A plurality of exhaust components are connected to the last connecting pipeline on the oxygen flow path, and the exhaust components are provided with an exhaust port opening upward;

[0007] A plurality of sets of drainage components, corresponding to and connected to the plurality of connecting pipes one by one, each set of the drainage components being provided with a drainage port opening downward; and

[0008] A drying component is arranged at the exhaust end of the liquid oxygen storage tank and is connected to the connecting pipeline between the liquid oxygen storage tank and the heat exchanger; the drying component is used to introduce a hot air flow into the connecting pipeline;

[0009] Among them, the exhaust port is used to discharge the pre-stored gas in the oxygen recovery device of the oxygen tank; the drain port is used to discharge the condensed water between the corresponding connecting pipeline and the previous connecting pipeline.

[0010] In a possible implementation, the exhaust assembly includes:

[0011] An exhaust pipe, one end of which is connected to the connecting pipeline, and the other end of which extends upward and is provided with the exhaust port;

[0012] a stop valve, disposed on the exhaust pipe and close to the exhaust port; and

[0013] The detection tube has one end connected to the end of the exhaust pipe away from the exhaust port; and the other end is provided with an oxygen concentration detector.

[0014] In some embodiments, the exhaust pipe is connected to the corresponding connecting pipeline via a buffer, and a dehumidification filter layer is provided inside one end of the buffer connected to the exhaust pipe.

[0015] Exemplarily, the dehumidification filter layer includes:

[0016] Two air-permeable plates are spaced apart along the axial direction of the exhaust pipe and clamped on the inner wall of the buffer; each of the air-permeable plates is provided with a plurality of air-permeable holes penetrating along the axial direction of the exhaust pipe;

[0017] Dehumidification cotton is filled between the two breathable panels.

[0018] In a possible implementation, the drainage component includes:

[0019] A drain pipe, one end of which is connected to the corresponding connecting pipe, and the other end of which extends downward and is provided with the drain outlet;

[0020] A recovery tank is arranged at the extended end of the drain pipe and is communicated with the drain port.

[0021] In some embodiments, the drainage assembly further comprises:

[0022] A conical block is sealed at the drain outlet, and the cross-sectional size of the conical block gradually increases from top to bottom;

[0023] An elastic member, one end of which is fixed to the bottom of the conical block, and the other end of which extends downward and is connected to the bottom wall of the recovery tank;

[0024] When the water flow in the drainage pipe reaches a preset height, the conical block moves downward to form an annular drainage gap between the outer peripheral wall of the conical block and the drainage port.

[0025] Exemplarily, a guide column extending downward is further provided at the bottom of the conical block, and a limiting sleeve extending upward is further provided on the bottom wall of the recovery tank;

[0026] Among them, the guide column extends downward into the limiting sleeve, and a first lifting gap is left between the guide column and the bottom wall of the recovery tank; a second lifting gap is left between the limiting sleeve and the bottom of the conical block; the elastic member is sleeved on the guide column, and the lower end is connected downward to the bottom wall of the limiting sleeve.

[0027] In some embodiments, a first control valve is provided on each of the drainage pipes; wherein, when the drying component is opened, the first control valve is in a closed state.

[0028] In some embodiments, a second control valve is correspondingly provided on each of the connecting pipelines.

[0029] In a possible implementation, the drying component includes:

[0030] an air compressor, disposed at the exhaust end of the liquid oxygen storage tank;

[0031] an air inlet pipeline, one end of which is connected to the air compressor, and the other end of which is connected to the connecting pipeline between the liquid oxygen storage tank and the heat exchanger; and

[0032] The third control valve is arranged on the air intake pipeline.

[0033] Compared with the prior art, the solution shown in the embodiment of the present application can firstly exhaust the reserved gas between adjacent connecting pipelines through the exhaust port, and discharge the condensed water generated when the reserved gas in the adjacent pipelines contacts with the low-temperature oxygen through the drain port, so as to reduce the influence of the reserved gas on the quality of recovered oxygen; and, after the oxygen in the liquid oxygen storage tank is discharged, a hot air flow can be introduced into each component in the oxygen recovery device to release the oxygen tank through the drying component, so as to carry out drying and hot air purging in time, avoid the condensed water residue in the connecting pipeline to cause bacterial growth, and further ensure the quality of subsequent oxygen collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative work.

[0035] Figure 1 A schematic diagram of the structure of an oxygen tank oxygen recovery device provided in an embodiment of the utility model;

[0036] Figure 2 For attachment Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0037] Figure 3 For attachment Figure 1 Schematic diagram of the enlarged structure at point B in the middle.

[0038] In the figure:

[0039] 1. Liquid oxygen storage tank; 2. Heat exchanger; 3. Buffer tank; 4. Compressor; 5. Exhaust assembly; 51. Exhaust pipe; 511. Exhaust port; 52. Air check valve; 53. Detection tube; 531. Oxygen concentration detector; 54. Buffer; 55. Dehumidification filter layer; 551. Breathable plate; 552. Dehumidification cotton; 6. Drainage assembly; 61. Drain pipe; 62. Recovery tank; 63. Conical block; 64. Elastic part; 65. Guide column; 66. Limit sleeve; 67. First control valve; 7. Drying assembly; 71. Air compressor; 72. Inlet pipeline; 73. Third control valve; 8. Liquefaction pressurization device; 9. Second control valve; 10. Connecting pipeline. DETAILED DESCRIPTION

[0040] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0041] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or indirectly on the other element. It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0043] Please also read Figures 1 to 3Now, the oxygen tank releasing oxygen recovery device provided by the utility model is described. The oxygen tank release oxygen recovery device comprises a liquid oxygen storage tank 1, a heat exchanger 2, a buffer tank 3 and a compressor 4 which are sequentially connected through a plurality of connecting pipes 10, and the compressor 4 is used to deliver the pressurized oxygen to the user end; the oxygen tank release oxygen recovery device also comprises an exhaust component 5, a plurality of drainage components 6 and a drying component 7; the plurality of exhaust components 5 are correspondingly connected to the last connecting pipe 10 on the oxygen flow path, and the exhaust component 5 is provided with an exhaust port 511 opening upward; the plurality of drainage components 6 are correspondingly connected to and connected to the plurality of connecting pipes 10 one by one, and each drainage component 6 is provided with a drainage port opening downward; the drying component 7 is arranged at the exhaust end of the liquid oxygen storage tank 1, and is connected to the connecting pipe 10 between the liquid oxygen storage tank 1 and the heat exchanger 2; the drying component 7 is used to introduce a hot air flow into the connecting pipe 10; wherein the exhaust port 511 is used to discharge the pre-stored gas in the oxygen tank release oxygen recovery device; the drainage port is used to discharge the condensed water between the corresponding connecting pipe 10 and the previous connecting pipe 10.

[0044] For the convenience of explanation, the term "recovery device" is used in this application to refer to the "oxygen tank oxygen recovery device".

[0045] It should be understood that in order to balance the pressure in the liquid oxygen storage tank, the excess low-temperature oxygen in the liquid oxygen storage tank is discharged and heat exchanged through the heat exchanger 2, so that the low-temperature oxygen and the normal temperature air can exchange heat and form corresponding normal temperature oxygen and low-temperature air. The low-temperature air enters the air separation for reproduction, and the normal temperature oxygen enters the buffer tank 3 for buffering, is compressed by the compressor 4, and is transported to the user end for recycling, thereby realizing the recycling of the low-temperature oxygen.

[0046] It should be understood that the oxygen flow path in the present application is the liquid oxygen storage tank 1, the heat exchanger 2, the buffer tank 3 and the compressor 4, and then the user end, and the last connecting pipe 10 on the oxygen flow path refers to the connecting pipe 10 connected between the compressor 4 and the user end. For the convenience of explanation, the front and rear referred to in the present application refer to the front side and the rear side along the oxygen flow path.

[0047] Optionally, an exhaust component 5 is provided, and the exhaust component 5 is correspondingly arranged on the connecting pipeline 10 between the compressor 4 and the user end. After the pre-stored gas in the heat exchanger 2, the buffer tank 3 and the compressor 4, as well as the intermediate connecting pipeline 10 is emptied through the exhaust component 5, oxygen is collected to ensure the final delivery quality.

[0048] Optionally, multiple groups of exhaust components 5 are provided, and a group of exhaust components 5 is provided on each connecting pipe. Each group of exhaust components 5 is used to discharge the pre-stored gas between two connected connecting pipes 10, so as to improve the exhaust efficiency and facilitate the inspection of the air tightness between each connecting component.

[0049] In addition, it should be understood that when low-temperature oxygen comes into contact with pre-stored gas, condensed water will be produced. When condensed water accumulates in the pipeline for a long time, it is easy to breed bacteria. Therefore, a set of drainage components 6 is set on each connecting pipeline 10 to discharge the condensed water in time.

[0050] Furthermore, when the recovery device is not in operation, a hot air flow can be blown into the recovery device through the drying component 7 to dry the internal pipes in time to avoid residual condensed water.

[0051] Compared with the prior art, the oxygen recovery device for dispersing oxygen from an oxygen tank provided by the utility model can firstly exhaust the reserved gas between adjacent connecting pipelines 10 through the exhaust port 511, and discharge the condensed water generated when the reserved gas in the adjacent pipelines contacts with the low-temperature oxygen through the drain port, so as to reduce the influence of the reserved gas on the quality of the recovered oxygen; and, after the oxygen in the liquid oxygen storage tank 1 is discharged, a hot air flow can be introduced into each component in the oxygen recovery device for dispersing oxygen from the oxygen tank through the drying component 7, so as to perform drying and hot air purging in time, so as to avoid the condensed water residue in the connecting pipeline 10 causing bacterial growth, and further ensure the quality of subsequent oxygen collection.

[0052] See also Figure 2 In some possible embodiments, the exhaust assembly 5 includes an exhaust pipe 51, a stop valve 52 and a detection tube 53; one end of the exhaust pipe 51 is connected to the connecting pipeline 10, and the other end extends upward and is provided with an exhaust port 511; the stop valve 52 is arranged on the exhaust pipe 51 and is arranged close to the exhaust port 511; one end of the detection tube 53 is connected to one end of the exhaust pipe 51 away from the exhaust port 511; and the other end is provided with an oxygen concentration detector 531.

[0053] The exhaust pipe 51 is used to discharge the reserved gas in the adjacent connecting pipeline 10, and the air stop valve 52 is used to control the on-off of the exhaust pipe 51, so as to close the air stop valve 52 during the oxygen recovery process to prevent oxygen leakage; the detection tube 53 and the oxygen concentration detector 531 are used to detect the concentration of the exhaust gas in the exhaust pipe 51 and record the oxygen concentration at any time to ensure that the reserved gas is emptied.

[0054] See also Figure 2 In some embodiments, the exhaust pipe 51 is connected to the corresponding connecting pipeline 10 via a buffer 54 , and a dehumidification filter layer 55 is provided inside one end of the buffer 54 that is connected to the exhaust pipe 51 .

[0055] The buffer member 54 is provided to achieve communication between the exhaust pipe 51 and the connecting pipeline 10 , and the dehumidification filter layer 55 is provided to remove water vapor in the exhaust pipe 51 .

[0056] Specifically, the buffer component 54 is a three-way structure, and the connecting pipeline 10 includes at least two sub-pipelines connected in sequence, and two adjacent sub-pipelines are respectively connected to two of the passages of the buffer component 54, and the other passage of the buffer component 54 is connected to the exhaust pipe 51; further, in order to avoid gas leakage in the pipeline, a sealing ring is provided at the end of the buffer component 54 connected to the sub-pipeline and the exhaust pipe 51.

[0057] See also Figure 2 Exemplarily, the dehumidification filter layer 55 includes two air permeable plates 551 and dehumidification cotton 552; the two air permeable plates 551 are arranged at intervals along the axial direction of the exhaust pipe 51 and are clamped on the inner wall of the buffer 54; each air permeable plate 551 is provided with a plurality of air permeable holes that pass through the axial direction of the exhaust pipe 51; the dehumidification cotton 552 is filled between the two air permeable plates 551.

[0058] The air holes on the air permeable plate 551 are used to facilitate the air flow into the exhaust pipe 51. When the air flow passes through the dehumidification cotton 552, the water vapor in the air flow is absorbed by the dehumidification cotton 552, and the dry gas enters the oxygen concentration detector 531 for detection to avoid damage to the oxygen concentration monitor.

[0059] See also Figure 3 In some possible embodiments, the drainage assembly 6 includes a drainage pipe 61 and a recovery tank 62; one end of the drainage pipe 61 is connected to the corresponding connecting pipe 10, and the other end extends downward and is provided with a drainage port; the recovery tank 62 is arranged at the extended end of the drainage pipe 61 and is connected to the drainage port.

[0060] The drain pipe 61 is provided to discharge the condensed water from the connecting pipe 10 in time, and the recovery tank 62 is used to collect the condensed water, so as to avoid the condensed water being directly discharged to the ground, causing the ground to be slippery and affecting the passage of pedestrians.

[0061] See also Figure 3 In some embodiments, the drainage assembly 6 also includes a conical block 63 and an elastic member 64; the conical block 63 is blocked at the drainage outlet, and the cross-sectional size of the conical block 63 gradually increases from top to bottom; one end of the elastic member 64 is fixed to the bottom of the conical block 63, and the other end extends downward and is connected to the bottom wall of the recovery tank 62; wherein, when the water flow in the drainage pipe 61 reaches a preset height, the conical block 63 moves downward to form an annular drainage gap between the outer peripheral wall of the conical block 63 and the drainage outlet.

[0062] By setting a conical block 63 at the drain outlet, when the condensed water accumulates to a preset height, the conical block 63 is driven to move downward, thereby forming the above-mentioned drainage gap between the conical block 63 and the drain outlet, so that the condensed water in the drain pipe 61 can be discharged; after the condensed water is discharged, the elastic member 64 is used to drive the conical block 63 to reset upward to close the drainage gap and seal the drain pipe 61, thereby ensuring the sealing of the drain pipe 61.

[0063] See also Figure 3 , illustratively, a guide column 65 extending downward is further provided at the bottom of the conical block 63, and a limiting sleeve 66 extending upward is further provided on the bottom wall of the recovery tank 62; wherein, the guide column 65 extends downward into the limiting sleeve 66, and a first lifting gap is left between the limiting sleeve 66 and the bottom wall of the recovery tank 62; a second lifting gap is left between the limiting sleeve 66 and the bottom of the conical block 63; the elastic member 64 is sleeved on the guide column 65, and the lower end is downwardly connected to the bottom wall of the limiting sleeve 66.

[0064] By setting a limiting sleeve 66 and a guide column 65, when the conical block 63 slides up and down, the guide column 65 always moves up and down in the limiting sleeve 66, thereby ensuring that the conical block 63 does not deviate from the preset track when sliding, avoiding the problem of reduced sealing of the drain pipe 61 caused by the deviation of the conical block 63.

[0065] It should be understood that by setting the first lifting gap and the second lifting gap, space is ensured for the conical block 63 and the guide column 65 to slide up and down, avoiding interference between the conical block 63 and the upper end of the limiting sleeve 66, and avoiding interference between the guide column 65 and the bottom wall of the recovery tank 62, while ensuring the guidance of the guide column 65 in the limiting sleeve 66.

[0066] See also Figure 3 In some embodiments, a first control valve 67 is provided on each drain pipe 61; wherein, when the drying component 7 is opened, the first control valve 67 is in a closed state.

[0067] By setting the first control valve 67 and closing the drain pipe 61 in time, when the recovery device is dried by the drying component 7, the hot air flow is prevented from entering the drain pipe 61 and affecting the discharge of condensed water. At the same time, the hot air flow is prevented from entering the recovery tank 62, causing the air pressure in the recovery tank 62 to increase.

[0068] See also Figure 1 In some embodiments, a second control valve 9 is correspondingly provided on each connecting pipeline 10 .

[0069] By providing the second control valve 9, the on-off of each connecting pipeline 10 is specifically controlled, so as to facilitate the air tightness detection between adjacent connecting pipelines in the recovery device.

[0070] See also Figure 1 In some possible embodiments, the drying component 7 includes an air compressor 71, an air intake pipeline 72 and a third control valve 73; the air compressor 71 is arranged at the exhaust end of the liquid oxygen storage tank 1; one end of the air intake pipeline 72 is connected to the air compressor 71, and the other end is connected to the connecting pipeline 10 between the liquid oxygen storage tank 1 and the heat exchanger 2; the third control valve 73 is arranged on the air intake pipeline 72.

[0071] The air compressor 71 is used to provide a hot air flow into the recovery device, the air intake pipe 72 is used to transport the hot air flow to the connecting pipe 10, and the third control valve 73 is used to control the on-off of the hot air flow; when it is not necessary to recover oxygen through the recovery device, the compressed hot air flow is regularly introduced into the air intake pipe 72 through the air compressor 71, and then enters each connecting component in turn to achieve regular internal drying, avoid residual condensed water, and ensure the recovery quality of oxygen.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An oxygen tank release oxygen recovery device, comprising a liquid oxygen storage tank (1), a heat exchanger (2), a buffer tank (3) and a compressor (4) connected in sequence through a plurality of connecting pipes (10), wherein the compressor (4) is used to transport pressurized oxygen to a user end; characterized in that: The oxygen tank release oxygen recovery device also includes: An exhaust component (5) is correspondingly connected to the last connecting pipeline (10) on the oxygen flow path, and the exhaust component (5) is provided with an exhaust port (511) opening upward; A plurality of sets of drainage components (6) corresponding to and connected to the plurality of connecting pipes (10) one by one, each set of the drainage components (6) being provided with a drainage port opening downward; and a drying component (7), which is arranged at the exhaust end of the liquid oxygen storage tank (1) and is connected to the connecting pipeline (10) between the liquid oxygen storage tank (1) and the heat exchanger (2); the drying component (7) is used to introduce a hot air flow into the connecting pipeline (10); The exhaust port (511) is used to discharge the pre-stored gas in the oxygen recovery device of the oxygen tank; and the drain port is used to discharge the condensed water between the corresponding connecting pipeline (10) and the previous connecting pipeline (10).

2. The oxygen tank oxygen recovery device according to claim 1, characterized in that: The exhaust assembly (5) comprises: An exhaust pipe (51), one end of which is in communication with the connecting pipe (10), and the other end of which extends upward and is provided with the exhaust port (511); a stop valve (52) disposed on the exhaust pipe (51) and close to the exhaust port (511); and The detection tube (53) has one end connected to an end of the exhaust pipe (51) away from the exhaust port (511); and the other end is provided with an oxygen concentration detector (531).

3. The oxygen recovery device for releasing oxygen from an oxygen tank as claimed in claim 2, characterized in that: The exhaust pipe (51) is connected to the corresponding connecting pipeline (10) via a buffer (54), and a dehumidification filter layer (55) is provided inside one end of the buffer (54) that is connected to the exhaust pipe (51).

4. The oxygen tank oxygen recovery device as claimed in claim 3, characterized in that: The dehumidification filter layer (55) comprises: Two air permeable plates (551) are arranged at intervals along the axial direction of the exhaust pipe (51) and are clamped on the inner wall of the buffer member (54); each of the air permeable plates (551) is provided with a plurality of air permeable holes penetrating along the axial direction of the exhaust pipe (51); Dehumidification cotton (552) is filled between the two air-permeable plates (551).

5. The oxygen tank oxygen recovery device according to claim 1, characterized in that: The drainage assembly (6) comprises: A drainage pipe (61), one end of which is in communication with the corresponding connecting pipe (10), and the other end of which extends downward and is provided with the drainage port; The recovery tank (62) is arranged at the extended end of the drainage pipe (61) and is communicated with the drainage port.

6. The oxygen tank oxygen recovery device according to claim 5, characterized in that: The drainage component (6) further comprises: A conical block (63) is sealed at the drain outlet, and the cross-sectional size of the conical block (63) gradually increases from top to bottom; An elastic member (64), one end of which is fixed to the bottom of the conical block (63), and the other end of which extends downward and is connected to the bottom wall of the recovery tank (62); When the water flow in the drainage pipe (61) reaches a preset height, the conical block (63) moves downward to form an annular drainage gap between the outer peripheral wall of the conical block (63) and the drainage port.

7. The oxygen tank oxygen recovery device according to claim 6, characterized in that: The bottom of the conical block (63) is also provided with a guide column (65) extending downward, and the bottom wall of the recovery tank (62) is also provided with a limiting sleeve (66) extending upward; The guide column (65) extends downward into the limiting sleeve (66), and a first lifting gap is left between the guide column (65) and the bottom wall of the recovery tank (62); a second lifting gap is left between the limiting sleeve (66) and the bottom of the conical block (63); the elastic member (64) is sleeved on the guide column (65), and the lower end is connected downward to the bottom wall of the limiting sleeve (66).

8. The oxygen recovery device for releasing oxygen from an oxygen tank according to any one of claims 5 to 7, characterized in that: A first control valve (67) is provided on each of the drainage pipes (61); wherein, when the drying assembly (7) is opened, the first control valve (67) is in a closed state.

9. The oxygen tank oxygen recovery device according to claim 1, characterized in that: A second control valve (9) is correspondingly arranged on each of the connecting pipelines (10).

10. The oxygen tank oxygen recovery device according to claim 1, characterized in that: The drying component (7) comprises: An air compressor (71) is arranged at the exhaust end of the liquid oxygen storage tank (1); an air inlet pipeline (72), one end of which is in communication with the air compressor (71), and the other end of which is in communication with the connecting pipeline (10) between the liquid oxygen storage tank (1) and the heat exchanger (2); and The third control valve (73) is arranged on the air intake pipeline (72).

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