A nitrogen generating device with oxygen recovery function

Abstract

The present invention discloses a nitrogen making device with oxygen recovery function, which specifically relates to the technical field of gas preparation equipment, including a base frame, two support frames located on the front side, each of which has an argon storage component and an oxygen storage component, and a support frame located on the rear side, each of which has a nitrogen storage component. A separation component is provided at the right rear side of the upper end of the base frame, and a purification mechanism is provided at the right lower side of the separation component. The nitrogen making device with oxygen recovery function described in the present invention compresses and liquefies dust, oil stains and water molecules in the air while filtering them through the purification mechanism, and transports them to the separation component. Through the coordinated use of the separation component and the argon storage component, the oxygen storage component and the nitrogen storage component, the rare gases such as argon, nitrogen and oxygen in the liquefied air are separated and stored in stages, and the filter component is easy to install and disassemble, and the filter component can be cleaned with water collected in the water storage tank, which does not need to waste extra water and reduces costs.

Description

Technical Field

[0001] The invention relates to the technical field of gas preparation equipment, and in particular to a nitrogen making device with an oxygen recovery function. Background Art

[0002] In the process of nitrogen production, a large amount of oxygen will be separated and discharged as exhaust gas. If it is not recovered, the oxygen will be directly discharged into the atmosphere, causing waste of resources. Through the oxygen recovery function, the oxygen can be collected and used in other industrial processes or used as energy, thereby improving resource utilization. By recycling and utilizing oxygen resources, enterprises can reduce production costs and improve economic benefits. Therefore, a nitrogen production device with oxygen recovery function is needed.

[0003] Chinese patent announcement number CN105152145B discloses a nitrogen production device with an oxygen recovery system, including a first adsorption tower, a second adsorption tower and a finished product tank, the top and bottom of the first adsorption tower and the second adsorption tower are connected by a gas pipeline, and valves are provided on each pipeline, the top gas pipeline of the first adsorption tower and the second adsorption tower is connected to the finished product tank, the middle of the first adsorption tower and the middle of the second adsorption tower are connected with a median pipeline, the bottom gas pipeline between the first adsorption tower and the second adsorption tower is connected with the median pipeline, a valve is also provided on the median pipeline, and the bottom gas pipeline between the first adsorption tower and the second adsorption tower is connected with an oxygen recovery device. Based on the structural setting of the above-mentioned nitrogen production device, an unequal-time step-type pressure equalization process can be executed, the purity and efficiency of nitrogen production can be improved during operation, and the high-oxygen gas separated in the nitrogen production process can be recovered to reduce the waste of beneficial resources; however, the following defects still exist in the implementation process:

[0004] During the implementation of the above patent document, although oxygen can be collected while producing nitrogen, the device has the problem of being unable to recycle rare gases such as argon in the air, resulting in a waste of resources. Summary of the invention

[0005] The main purpose of the present invention is to provide a nitrogen production device with an oxygen recovery function, which can effectively solve the problem of being unable to recycle rare gases such as argon in the air.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A nitrogen production device with an oxygen recovery function comprises a base frame, wherein three support frames are provided at the upper end of the base frame, and the inner cavities of the two support frames located at the front side are respectively provided with an argon storage component and an oxygen storage component, and the argon storage component is located just to the right of the oxygen storage component, and the inner cavity of the support frame located at the rear side is provided with a nitrogen storage component, a separation component is provided at the rear right part of the upper end of the base frame, and a purification mechanism is provided at the lower right part of the separation component.

[0008] Preferably, the purification mechanism includes a casing one, a control component is provided at the front end of the casing one, an air inlet is provided on the upper side of the right end of the casing one, a filtering mechanism is provided on the upper side of the right wall of the inner cavity of the casing one, a water outlet is provided at the middle part of the front side of a lower end of the casing, the upper end of the water outlet passes through the middle part of the front side of a lower end of the casing and is provided with a water storage tank, a condensation group is provided at the upper end of the water storage tank, an air compressor is provided at the upper left part of the condensation group, and a refrigeration component is provided at the output end of the air compressor.

[0009] Preferably, the lower end of the condensation group is fixedly connected to the middle of the bottom wall of an inner cavity of the casing, the upper right part of the condensation group is fixedly connected to the upper left part of the filtering mechanism, and the rear end of the air compressor is fixedly connected to the middle of the upper side of the rear wall of an inner cavity of the casing.

[0010] Preferably, the filtering mechanism comprises an arc-shaped pipe, a fixing frame is provided at the upper end of the arc-shaped pipe, sliding strips are symmetrically provided on the upper and lower left walls of the inner cavity of the fixing frame, a mounting sleeve is provided on the upper right part of the inner cavity of the arc-shaped pipe, a filtering component is jointly provided on the inner cavity of the fixing frame and the outer surfaces of the two sliding strips, and a filtering component is jointly provided on the inner cavity of the fixing frame, the inner cavity of the mounting sleeve and the outer surfaces of the two sliding strips.

[0011] Preferably, the right end of the fixing frame is fixedly connected to the upper side of the right wall of an inner cavity of the casing, and the inner cavity of the air inlet is communicated with the inner cavity of the fixing frame.

[0012] Preferably, the filter assembly includes a handle, a mounting plate is provided on the upper side of the rear end of the handle, a filter frame is provided on the rear end of the mounting plate, a slide groove symmetrically arranged up and down is provided on the left end of the filter frame, an inner sleeve frame is provided on the lower side of the rear end of the handle, and a filter screen is provided in the inner cavity of the inner sleeve frame.

[0013] Preferably, the inner cavities of the two slide grooves are respectively slidably connected to the outer surfaces of the two slide bars, the outer surface of the filter frame is slidably connected to the inner cavity of the fixing frame, and the outer surface of the inner sleeve frame is slidably connected to the inner cavity of the mounting sleeve.

[0014] Preferably, the condensation group includes a casing 2 fixedly connected to the left end of the arc-shaped pipe, a conduit 1 is provided in the middle of the upper left end of the casing 2, and the end of the conduit 1 away from the casing 2 is fixedly connected to the input end of the air compressor, two condensation components are provided on the top wall of the inner cavity of the casing 2, and steel grids are provided on the upper right ends of the two condensation components, an inclined guide plate is provided in the middle of the left wall of the inner cavity of the casing 2, a support frame 2 is provided on the lower side of the outer surface of the casing 2, and the lower end of the support frame 2 is fixedly connected to the middle of the bottom wall of the inner cavity of the casing 1, a conduit 2 is provided in the middle of the bottom wall of the inner cavity of the casing 2, and the lower end of the conduit 2 is fixedly connected to the upper side of the water storage tank.

[0015] Preferably, the separation assembly includes a support frame three fixedly connected to the right rear portion of the upper end of the base frame, the inner cavity of the support frame three is provided with a tank body, the inner cavity of the tank body is provided with six layered components, a spherical cover is provided in the middle of the inner cavity of the tank body, and the spherical cover is located directly above the two layered components on the lower side, a return pipe is commonly provided on the upper and lower sides of the tank body, a gas delivery component two is provided on the upper left portion of the outer surface of the tank body, an end of the gas delivery component two away from the tank body is fixedly connected to the nitrogen storage component, a gas delivery component one is provided in the middle of the front side of the outer surface of the tank body, an end of the gas delivery component one away from the tank body is fixedly connected to the argon storage component, a gas delivery component three and a gas delivery component four are respectively provided in the middle of the left side of the outer surface of the tank body, and the gas delivery component three is located above the gas delivery component four, an end of the gas delivery component three away from the tank body is fixedly connected to the oxygen storage component, an end of the gas delivery component four away from the tank body is fixedly connected to the nitrogen storage component, and the output end of the refrigeration component is fixedly connected to the lower right portion of the outer surface of the tank body.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention has a purification mechanism and a separation component. The dust, oil stains and water molecules in the air are filtered by the purification mechanism while being compressed and liquefied, and transported to the separation component. Through the tank body, spherical cover and layering component in the separation component, and in the coordinated use of the reflux pipe, the gas transmission component 1, the gas transmission component 2, the gas transmission component 3 and the gas transmission component 4, the rare gases such as argon, nitrogen and oxygen in the liquefied air are separated in stages, and the rare gases such as argon, nitrogen and oxygen are collected and stored by the argon storage component, the oxygen storage component and the nitrogen storage component, thereby achieving the purpose of producing nitrogen and recovering oxygen, and collecting rare gases such as argon, and further improving the purity of nitrogen and oxygen by collecting rare gases such as argon.

[0018] In the specific use process of the present invention, dust and oil stains in the air are filtered through the filtering mechanism, water molecules in the air are condensed and filtered through the condensation group and collected through the water storage tank, so that the purity of subsequent nitrogen and oxygen collection is improved, and the filtering component in the filtering mechanism is easy to install and disassemble with the coordinated use of the arc pipe, the fixing frame and the installation sleeve, and the filtering component can be cleaned with water collected in the water storage tank, which does not need to waste additional water resources and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of another viewing angle of the overall structure of the present invention;

[0021] Figure 3 It is a partial cross-sectional schematic diagram of the purification mechanism of the present invention;

[0022] Figure 4 It is a schematic diagram of the internal structure of the purification mechanism of the present invention;

[0023] Figure 5 It is a partial cross-sectional schematic diagram of the filtering mechanism of the present invention;

[0024] Figure 6 It is a schematic diagram of a partial cross-section of the filtering mechanism of the present invention from another viewing angle;

[0025] Figure 7 For the present invention Figure 6 The enlarged schematic diagram at A in the middle;

[0026] Figure 8 It is a schematic diagram of the filter mechanism of the present invention;

[0027] Fig. 9 is a schematic diagram of a filter assembly of the present invention;

[0028] Fig.10 It is a schematic diagram of the filter assembly of the present invention from another perspective;

[0029] Fig.11 It is a schematic diagram of the condensation group of the present invention;

[0030] Fig.12 It is a schematic diagram of the separation assembly of the present invention;

[0031] Fig.13 For the present invention Fig.12 Enlarged schematic diagram of point B in the middle.

[0032] In the figure: 1, bottom frame; 2, support frame 1; 3, oxygen storage component; 4, argon storage component; 5, purification mechanism; 51, casing 1; 52, water outlet; 53, water storage tank; 54, condensation group; 541, support frame 2; 542, casing 2; 543, conduit 1; 544, condensation component; 545, inclined guide plate; 546, steel grid; 547, conduit 2; 55, filtering mechanism; 551, arc pipe; 552, filtering assembly; 5521, handle; 5522, inner sleeve frame; 5523 , filter screen; 5524, filter frame; 5525, mounting plate; 5526, slide; 553, fixing frame; 554, mounting sleeve; 555, slide bar; 56, air inlet; 57, air compressor; 58, refrigeration component; 59, control component; 6, separation component; 61, support frame three; 62, tank body; 63, return pipe; 65, spherical cover; 66, gas transmission component one; 67, layering component; 68, gas transmission component two; 69, gas transmission component three; 690, gas transmission component four; 7, nitrogen storage component. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0034] Embodiment 1, as Figure 1-2 As shown, a nitrogen making device with oxygen recovery function comprises a base frame 1, three support frames 2 are arranged on the upper end of the base frame 1, an argon storage component 4 and an oxygen storage component 3 are respectively arranged in the inner cavities of the two support frames 2 located on the front side, and the argon storage component 4 is located right to the oxygen storage component 3, and a nitrogen storage component 7 is arranged in the inner cavity of the support frame 2 located on the rear side, a separation component 6 is arranged on the right part of the rear side of the upper end of the base frame 1, and a purification mechanism 5 is arranged on the right part of the lower side of the separation component 6. By installing the base frame 1, it is convenient for a forklift to transport the device.

[0035] Firstly, the oxygen storage component 3, the argon storage component 4 and the nitrogen storage component 7 are all installed on the upper end of the base frame 1 through the three support frames 1. By starting the forklift and using it in conjunction with the base frame 1, the oxygen storage component 3, the argon storage component 4, the nitrogen storage component 7 and the separation component 6 can be moved to a suitable position, and the purification mechanism 5 is transported separately. After arriving at the suitable position, the purification mechanism 5 is connected to the separation component 6. At this moment, the device can be used normally, and the purification mechanism 5 is started to filter the dust, moisture and oil stains in the air, and compress and liquefy the purified air. The liquefied air enters the separation component 6, and the nitrogen in the liquefied air is transported to the nitrogen storage component 7 for storage through the separation component 6, and the oxygen in the liquefied air is transported to the oxygen storage component 3 for storage, and the rare gases such as argon in the liquefied air are transported to the argon storage component 4 for storage. While achieving the purpose of producing nitrogen and recovering oxygen, the rare gases such as argon can also be collected, and the purity of nitrogen and oxygen is further improved by collecting rare gases such as argon.

[0036] In order to filter out dust, moisture and oil in the air and compress and liquefy the purified air, Figure 3 and Figure 4 As shown, the purification mechanism 5 includes a casing 51, a control component 59 is provided at the front end of the casing 51, an air inlet 56 is provided on the upper right side of the casing 51, a filtering mechanism 55 is provided on the upper right side of the inner cavity wall of the casing 51, a water outlet 52 is provided at the middle of the front side of the lower end of the casing 51, the upper end of the water outlet 52 penetrates the middle of the front side of the lower end of the casing 51 and is provided with a water storage tank 53, a condensation group 54 is provided at the upper end of the water storage tank 53, an air compressor 57 is provided at the upper left side of the condensation group 54, a refrigeration component 58 is provided at the output end of the air compressor 57, the lower end of the condensation group 54 is fixedly connected to the middle of the bottom wall of the inner cavity of the casing 51, the upper right side of the condensation group 54 is fixedly connected to the upper left side of the filtering mechanism 55, and the rear end of the air compressor 57 is fixedly connected to the middle of the upper side of the rear wall of the inner cavity of the casing 51.

[0037] It should be noted that the specific installation method, circuit connection method and control method of the air compressor 57, refrigeration component 58 and control component 59 in the present invention are all conventional designs, which are conventional design means of designers. The control component 59 includes components such as cabinet doors and controllers, and the refrigeration component 58 includes a deep-freeze component cold box and a duct. The controller in the start-up control component 59 controls the air compressor 57 to extract and compress the air in the environment and send it into the refrigeration component 58. The compressed air is liquefied by the refrigeration component 58. The air compressor 57, refrigeration component 58 and control component 59 only need to meet the purpose of compressing and liquefying the air.

[0038] First, after the device can be used normally, the air compressor 57 is controlled by starting the control component 59 to extract air from the surrounding environment, so that the air in the environment enters the filter mechanism 55 through the air inlet 56, and the dust and oil stains in the air are filtered by the filter mechanism 55. The filtered air enters the condensation group 54, and is cooled by the condensation group 54, so that the moisture in the air is filtered and the filtered moisture enters the water storage tank 53 for collection. The air after the moisture is filtered enters the air compressor 57 for compression and is sent to the refrigeration component 58, and the refrigeration component 58 liquefies the incoming air, finally achieving the purpose of filtering the dust, moisture and oil stains in the air and compressing and liquefying the purified air. After the device stops being used, the collected water can also be used to clean the filter device in the filter mechanism 55 without wasting additional water, thereby reducing costs.

[0039] Further explanation, such as Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the filtering mechanism 55 includes an arc-shaped pipe 551, a fixing frame 553 is provided at the upper end of the arc-shaped pipe 551, and sliding bars 555 are symmetrically provided on the upper and lower left walls of the inner cavity of the fixing frame 553, a mounting sleeve 554 is provided at the upper right part of the inner cavity of the arc-shaped pipe 551, a filtering component 552 is provided on the inner cavity of the fixing frame 553 and the outer surfaces of the two sliding bars 555, and a filtering component 552 is provided on the inner cavity of the fixing frame 553, the inner cavity of the mounting sleeve 554, and the outer surfaces of the two sliding bars 555, the right end of the fixing frame 553 is fixedly connected to the upper side of the right wall of the inner cavity of the casing 51, and the inner cavity of the air inlet 56 is communicated with the inner cavity of the fixing frame 553.

[0040] In detail, when the device starts the control component 59 to control the air compressor 57 to extract air from the environment, the air in the environment enters the filter component 552 in the inner cavity of the fixed frame 553 through the air inlet 56, and the dust and oil stains in the air are filtered by the filter component 552. The filtered air enters the condensation group 54 through the arc pipe 551, so as to achieve the purpose of filtering the dust and oil stains in the air, and the filter component 552 can slide back and forth in the inner cavity of the fixed frame 553 and the installation sleeve 554, so as to facilitate the rapid installation and removal of the filter component 552. When the filter component 552 needs to be cleaned, it can be cleaned with the water collected in the water storage tank 53, without wasting extra water, thereby reducing costs.

[0041] Further explanation, such as Fig. 9 and Fig.10 As shown, the filter assembly 552 includes a handle 5521, a mounting plate 5525 is provided on the upper side of the rear end of the handle 5521, a filter frame 5524 is provided on the rear end of the mounting plate 5525, a symmetrical slide groove 5526 is provided on the left end of the filter frame 5524, an inner sleeve frame 5522 is provided on the lower side of the rear end of the handle 5521, a filter screen 5523 is provided in the inner cavity of the inner sleeve frame 5522, the inner cavities of the two slide grooves 5526 are respectively slidably connected to the outer surfaces of the two slide bars 555, the outer surface of the filter frame 5524 is slidably connected to the inner cavity of the fixing frame 553, and the outer surface of the inner sleeve frame 5522 is slidably connected to the inner cavity of the mounting sleeve 554.

[0042] In detail, it should be explained that the filter frame 5524 is composed of five layers of filter screen plates. When air enters the filter assembly 552 in the inner cavity of the fixed frame 553 through the air inlet 56, the dust in the air is filtered by the filter frame 5524 in the filter assembly 552, and the oil stains in the air are filtered by the filter screen 5523, so as to achieve the purpose of filtering the dust and oil stains in the air, and the slide groove 5526 can slide back and forth on the slide bar 555. When the handle 5521 is pulled, the inner sleeve frame 5522 can drive the filter screen 5523 to be pulled out from the inner cavity of the installation sleeve 554, and the filter frame 5524 can be driven by the installation plate 5525 to be pulled out from the inner cavity of the fixed frame 553 and the slide bar 555, so that the filter frame 5524 and the filter screen 5523 can be cleaned by the water collected in the water storage tank 53, and the filter screen 5523 can be quickly replaced, so that the dust and oil stains in the air can be effectively filtered, and it is convenient for quick installation, disassembly and cleaning.

[0043] In order to achieve the purpose of filtering the moisture in the filtered air, Fig.11As shown, the condensation group 54 includes a casing 542 fixedly connected to the left end of the arc-shaped pipe 551, a conduit 543 is provided in the middle of the upper left end of the casing 542, and the end of the conduit 543 away from the casing 542 is fixedly connected to the input end of the air compressor 57, two condensation components 544 are provided on the top wall of the inner cavity of the casing 542, and steel grids 546 are provided on the upper right ends of the two condensation components 544, an inclined guide plate 545 is provided in the middle of the left wall of the inner cavity of the casing 542, a support frame 541 is provided on the lower side of the outer surface of the casing 542, and the lower end of the support frame 541 is fixedly connected to the middle of the bottom wall of the inner cavity of the casing 1 51, a conduit 547 is provided in the middle of the bottom wall of the inner cavity of the casing 542, and the lower end of the conduit 547 is fixedly connected to the upper side of the water storage tank 53.

[0044] It should be noted that the specific installation method of the installation sleeve 554, the circuit connection method and the control method in the present invention are all conventional designs, which are conventional design means of designers. In addition, a temperature detection device is provided on the installation sleeve 554, and a certain degree of cooling is performed through the installation sleeve 554. It is only necessary to ensure that the temperature around the condensation component 544 is significantly lower than the temperature of the inner cavity of the arc pipe 551.

[0045] First, after the air enters the inner cavity of the second casing 542 through the arc duct 551, the temperature of the steel grid 546 and the inclined guide plate 545 is significantly lower than the inner cavity temperature of the arc duct 551 due to the refrigeration of the condensation component 544. When the water molecules in the air hit the steel grid 546, they will be cooled and liquefied and condensed into water droplets attached to the steel grid 546 and the inclined guide plate 545, and fall to the bottom of the inner cavity of the second casing 542 under the action of gravity, and enter the water storage tank 53 through the second conduit 547 for collection, and the inclined guide plate 545 will be cooled and condensed into water droplets attached to the steel grid 546 and the inclined guide plate 545. The flow plate 545 is composed of an arc-shaped densely woven fine mesh and densely inclined fine steel wires, which can filter the water molecules in the air to the maximum extent. The water collected in the water storage tank 53 can be effectively used to clean the filter frame 5524 and the filter screen 5523, which can not only condense, filter and collect the water molecules in the air, but also reuse the collected water, reduce the waste of additional water resources, and filter and separate the water molecules in the air to the maximum extent, so that the purity of subsequent oxygen, nitrogen and rare gases can be improved.

[0046] Example 2: Based on Example 1, this example is used for the purpose of separating and storing rare gases such as nitrogen, oxygen and argon in liquefied air. Fig.12 and Fig.13As shown, the separation assembly 6 includes a support frame 3 61 fixedly connected to the rear right side of the upper end of the base frame 1, a tank body 62 is provided in the inner cavity of the support frame 3 61, six layered components 67 are provided in the inner cavity of the tank body 62, a spherical cover 65 is provided in the middle of the inner cavity of the tank body 62, and the spherical cover 65 is located directly above the two layered components 67 on the lower side, and a return pipe 63 is provided on the upper and lower sides of the tank body 62, a gas delivery component 2 68 is provided on the upper left part of the outer surface of the tank body 62, and the end of the gas delivery component 2 68 away from the tank body 62 is fixedly connected to the nitrogen storage component 7, a gas delivery component 1 66 is provided in the middle of the front side of the outer surface of the tank body 62, and the end of the gas delivery component 1 66 away from the tank body 62 is fixedly connected to the argon storage component 4, and the tank body 62 A gas delivery component three 69 and a gas delivery component four 690 are respectively provided in the middle of the left side of the outer surface, and the gas delivery component three 69 is located above the gas delivery component four 690, the end of the gas delivery component three 69 away from the tank body 62 is fixedly connected to the oxygen storage component 3, the end of the gas delivery component four 690 away from the tank body 62 is fixedly connected to the nitrogen storage component 7, and the output end of the refrigeration component 58 is fixedly connected to the lower right part of the outer surface of the tank body 62. By arranging a spherical cover 65 in the middle of the inner cavity of the tank body 62, the inner cavity of the tank body 62 is divided into two spaces, so that a space A is formed below the spherical cover 65, and a space B is formed above the spherical cover 65, and there are two layered components 67 in the space A, and four layered components 67 in the space B.

[0047] It should be noted that the specific installation method and circuit connection method and control method of the stratified component 67 in the present invention are all conventional designs, which are conventional design means of designers. A temperature detection device is provided inside the tank body 62, and the stratified component 67 is controlled by the control component 59. The stratified component 67 can be controlled by the control component 59 to accurately control the temperature, so that liquefied argon and other rare gases, nitrogen and oxygen can be separated according to their different boiling points. The gas transmission component 1 66, the gas transmission component 2 68, the gas transmission component 3 69 and the gas transmission component 4 690 are all composed of components such as conduits and one-way valves, and will not cause reflux or storage failure due to other reasons. At the same time, with the cooperation of the argon storage component 4, the oxygen storage component 3 and the nitrogen storage component 7, the collection and storage of argon and other rare gases, nitrogen and oxygen are realized.

[0048] First, it is cooled to about -173°C in the refrigeration component 58, and part of the air begins to turn into liquid. Then the air is transported to the lower part of the tank body 62, i.e., the lower part of space A, along the conduit in the refrigeration component 58. The air enters from the lower part of space A for low-temperature multi-stage distillation. The oxygen condenses and falls from space A in liquid form. At the same time, the liquid nitrogen vaporizes and rises in gaseous form. When the temperature reaches -180°C, it reaches the boiling point of nitrogen. Part of the nitrogen is separated from the top of space A through the gas transmission component 4690 and enters the nitrogen storage component 7 for storage and is discharged from the liquid air. The oxygen content in the liquid air at the bottom of space A accumulates and increases continuously to form oxygen-rich liquid air. The oxygen-rich liquid air is transported to the upper part of space B through the reflux pipe 63. When the temperature reaches -196°C, it reaches the boiling point of nitrogen. The liquid at the top of the space is separated through the gas delivery component 2 68 and enters the nitrogen storage component 7 for storage. The liquid continues to heat up downward, and when the temperature reaches -186°C, it reaches the boiling point of argon. Argon is separated from the middle of space B through the gas delivery component 1 66 and enters the argon storage component 4 for storage. The liquid continues to flow downward, and when the temperature reaches -183°C, oxygen and liquid oxygen are separated from the bottom of space B through the gas delivery component 3 69 and enter the oxygen storage component 3 for storage. Finally, while nitrogen is being produced and oxygen is being collected, rare gases such as argon can also be collected. The purity of nitrogen and oxygen is further improved by collecting rare gases such as argon, making the use of the device more reliable. The operation is simple and convenient as a whole, and the purity of the collected gas can be improved while reducing costs.

[0049] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A nitrogen production device with oxygen recovery function, comprising a base frame (1), characterized in that: The upper end of the base frame (1) is provided with three support frames (2), the inner cavities of the two support frames (2) located at the front side are provided with an argon storage component (4) and an oxygen storage component (3), respectively, and the argon storage component (4) is located directly to the right of the oxygen storage component (3), and the inner cavity of the support frame (2) located at the rear side is provided with a nitrogen storage component (7), and a separation component (6) is provided at the right portion of the rear side of the upper end of the base frame (1), and a purification mechanism (5) is provided at the right portion of the lower side of the separation component (6); The purification mechanism (5) comprises a casing (51), a control component (59) is provided at the front end of the casing (51), an air inlet (56) is provided at the upper right end of the casing (51), a filtering mechanism (55) is provided at the upper right wall of the inner cavity of the casing (51), a water outlet (52) is provided at the middle of the front side of the lower end of the casing (51), the upper end of the water outlet (52) passes through the middle of the front side of the lower end of the casing (51) and is provided with a water storage tank (53), a condensation group (54) is provided at the upper end of the water storage tank (53), an air compressor (57) is provided at the upper left end of the condensation group (54), and a refrigeration component (58) is provided at the output end of the air compressor (57); The filtering mechanism (55) comprises an arc-shaped pipe (551), a fixing frame (553) is provided at the upper end of the arc-shaped pipe (551), sliding strips (555) are symmetrically provided on the left wall of the inner cavity of the fixing frame (553) at the upper right side, a mounting sleeve (554) is provided at the upper right side of the inner cavity of the arc-shaped pipe (551), a filtering component (552) is provided on the inner cavity of the fixing frame (553) and the outer surfaces of the two sliding strips (555), and a filtering component (552) is provided on the inner cavity of the fixing frame (553), the inner cavity of the mounting sleeve (554) and the outer surfaces of the two sliding strips (555); The filter assembly (552) comprises a handle (5521), a mounting plate (5525) is provided on the upper side of the rear end of the handle (5521), a filter frame (5524) is provided on the rear end of the mounting plate (5525), a symmetrical slide groove (5526) is provided on the left end of the filter frame (5524), an inner sleeve frame (5522) is provided on the lower side of the rear end of the handle (5521), and a filter screen (5523) is provided in the inner cavity of the inner sleeve frame (5522); The separation assembly (6) comprises a support frame 3 (61) fixedly connected to the rear right side of the upper end of the base frame (1); a tank body (62) is provided in the inner cavity of the support frame 3 (61); six layered components (67) are provided in the inner cavity of the tank body (62); a spherical cover (65) is provided in the middle of the inner cavity of the tank body (62); and the spherical cover (65) is located directly above the two layered components (67) at the lower side; a return pipe (63) is provided on the upper and lower sides of the tank body (62); a gas delivery component 2 (68) is provided on the upper left side of the outer surface of the tank body (62); an end of the gas delivery component 2 (68) away from the tank body (62) is fixedly connected to the nitrogen storage component (7); and the tank body (6 2) A gas delivery component (66) is provided in the middle of the front side of the outer surface, and the end of the gas delivery component (66) away from the tank body (62) is fixedly connected to the argon storage component (4). A gas delivery component (69) and a gas delivery component (690) are provided in the middle of the left side of the outer surface of the tank body (62), and the gas delivery component (69) is located above the gas delivery component (690). The end of the gas delivery component (69) away from the tank body (62) is fixedly connected to the oxygen storage component (3), and the end of the gas delivery component (690) away from the tank body (62) is fixedly connected to the nitrogen storage component (7). The output end of the refrigeration component (58) is fixedly connected to the lower right side of the outer surface of the tank body (62).

2. A nitrogen generator with oxygen recovery function according to claim 1, characterized in that: The lower end of the condensation group (54) is fixedly connected to the middle part of the bottom wall of the inner cavity of the casing (51), the upper right part of the condensation group (54) is fixedly connected to the upper left part of the filtering mechanism (55), and the rear end of the air compressor (57) is fixedly connected to the middle part of the upper side of the rear wall of the inner cavity of the casing (51).

3. The nitrogen generator with oxygen recovery function according to claim 1, characterized in that: The right end of the fixing frame (553) is fixedly connected to the upper side of the right wall of the inner cavity of the housing (51), and the inner cavity of the air inlet (56) is in communication with the inner cavity of the fixing frame (553).

4. The nitrogen generating device with oxygen recovery function according to claim 1, characterized in that: The inner cavities of the two slide grooves (5526) are respectively slidably connected to the outer surfaces of the two slide bars (555), the outer surface of the filter frame (5524) is slidably connected to the inner cavity of the fixing frame (553), and the outer surface of the inner sleeve frame (5522) is slidably connected to the inner cavity of the mounting sleeve (554).

5. The nitrogen generator with oxygen recovery function according to claim 1, characterized in that: The condensation group (54) comprises a second casing (542) fixedly connected to the left end of the arc-shaped pipe (551), a first conduit (543) is provided in the middle of the upper left end of the second casing (542), an end of the first conduit (543) away from the second casing (542) is fixedly connected to the input end of the air compressor (57), and two condensation components (544) are provided on the top wall of the inner cavity of the second casing (542), and the upper right ends of the two condensation components (544) are both provided with A steel grid (546) is provided, an inclined guide plate (545) is provided in the middle of the left wall of the inner cavity of the second housing (542), a support frame (541) is provided on the lower side of the outer surface of the second housing (542), the lower end of the support frame (541) is fixedly connected to the middle of the bottom wall of the inner cavity of the first housing (51), a conduit (547) is provided in the middle of the bottom wall of the inner cavity of the second housing (542), and the lower end of the conduit (547) is fixedly connected to the upper side of the water storage tank (53).

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