A nitrogen and oxygen combined production device

Abstract

The utility model discloses a nitrogen and oxygen combined preparation device, including an air buffer tank, a connecting pipe is fixedly installed on the surface of the air buffer tank, the connecting pipe is in two groups, an air compressor and a freeze dryer are fixedly installed on opposite sides of the connecting pipe, a pretreatment structure is fixedly installed on the upper surface of the air compressor, a cleaning structure is embedded and installed on the front surface of the pretreatment structure, a filter assembly is fixedly installed on one side surface of the freeze dryer, a nitrogen generator and an oxygen generator are fixedly connected to one side of the filter assembly, the pretreatment structure includes a buffer plate, a first air inlet, an outer shell, a filter screen, an activated carbon adsorption layer, a first air outlet, a baffle, and a sealing gasket, and the first air inlet is embedded and installed on one side surface of the outer shell. The nitrogen and oxygen combined preparation device described in the utility model can pretreat air, thereby improving preparation efficiency, and can quickly clean the filter to reduce the replacement frequency.

Description

Technical Field

[0001] The utility model relates to the technical field of nitrogen and oxygen preparation, in particular to a nitrogen and oxygen combined preparation device. Background Art

[0002] Nitrogen and oxygen are colorless and odorless gases contained in the air. When preparing nitrogen and oxygen, pressure swing adsorption is usually used. It has the advantages of high product purity, can generally work at room temperature and not high pressure, different heating during bed regeneration, energy saving and economy, convenient operation, continuous cycle operation, etc. Its process flow includes several steps such as dehumidification, refining, adsorption, emptying and recycling; the existing nitrogen and oxygen preparation devices have certain disadvantages when used. The raw material for nitrogen and oxygen preparation is air. When preparing, the air needs to be compressed and filtered, etc., and the gas is in a flowing state. The residence time inside the freeze dryer is short, and the filtration is not sufficient, resulting in low filtration efficiency. After long-term use, a large amount of impurities are attached to the surface of the filter. In order to prevent clogging, it needs to be replaced frequently, which consumes resources. For this reason, we propose a nitrogen and oxygen combined preparation device. Utility Model Content

[0003] The main purpose of the utility model is to provide a nitrogen and oxygen combined production device, which can effectively solve the problems in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A nitrogen and oxygen combined preparation device comprises an air buffer tank, a connecting pipe is fixedly installed on the surface of the air buffer tank, the connecting pipe is in two groups, an air compressor and a freeze dryer are fixedly installed on opposite back surfaces of the connecting pipes, a pretreatment structure is fixedly installed on the upper surface of the air compressor, a cleaning structure is embedded in the front surface of the pretreatment structure, a filter assembly is fixedly installed on one side surface of the freeze dryer, and a nitrogen generator and an oxygen generator are fixedly connected to one side of the filter assembly.

[0006] In a preferred embodiment, the pretreatment structure includes a buffer plate, a first air inlet, a shell, a filter, an activated carbon adsorption layer, a first air outlet, a baffle, and a sealing gasket. The first air inlet is embedded and installed on one side surface of the shell, a sealing gasket is embedded and installed on the front surface of the shell near the lower position, a baffle is embedded and installed inside the sealing gasket, the first air outlet is embedded and installed on the lower surface of the shell near one side, a buffer plate is embedded and installed inside the shell near one side, an activated carbon adsorption layer is embedded and installed inside the shell near the other side, and a filter is embedded and installed on one side of the activated carbon adsorption layer inside the shell.

[0007] In a preferred embodiment, the cleaning structure includes a scraper, a connecting column, a handle, and a cleaning brush. The handle is fixedly mounted on the front surface of the connecting column, the scraper is fixedly mounted on the rear surface of the connecting column, and the cleaning brush is fixedly mounted on one side surface of the scraper.

[0008] In a preferred embodiment, the pre-treatment structure and the cleaning structure are embedded and installed on the front surface of the shell above the baffle through connecting columns, and the shell is fixedly installed on the upper surface of the air compressor.

[0009] In a preferred embodiment, the filter assembly includes an outer frame, a pull rod, a second air inlet, a connecting rod, a filter, a connecting plate, a mounting ring, a second air outlet, and an annular brush. The second air outlet is embedded and installed on one side surface of the outer frame, and the second air inlet is embedded and installed on the other side surface of the outer frame. Connecting rods are embedded and installed on one side surface of the outer frame in front of and behind the second air inlet. The connecting rods are divided into two groups. A pull rod is fixedly connected to the surface of one side of the connecting rod, and a connecting plate is fixedly connected to the other side surface of the connecting rod. An annular brush is embedded and installed on the inner surface of the connecting plate, and a mounting ring is embedded and installed inside the annular brush inside the outer frame, and a filter is sleeved and installed on the surface of the mounting ring.

[0010] In a preferred embodiment, the filter assembly is fixedly mounted on a side surface of the freeze dryer through the second air inlet.

[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:

[0012] In the utility model, the filter screen and activated carbon adsorption layer are used to pre-treat the air to be processed, thereby reducing impurities in the air; the scraper and cleaning brush are used to quickly discharge impurities inside the shell, and the operation is convenient; the connection plate and annular brush are used to easily clean the surface of the filter, thereby reducing the frequency of filter replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of a nitrogen and oxygen combined production device of the utility model;

[0014] Figure 2 This is a schematic diagram of the interior of a shell of a nitrogen and oxygen combined production device of the utility model;

[0015] Figure 3 This is a cross-sectional view of the shell of a nitrogen and oxygen combined production device of the utility model;

[0016] Figure 4 This is a cross-sectional view of the outer frame of a nitrogen and oxygen combined production device of the utility model;

[0017] Figure 5 The utility model is a nitrogen and oxygen combined preparation device Figure 4 A magnified detail of point A.

[0018] In the figure: 1. pretreatment structure; 101. buffer plate; 102. first air inlet; 103. shell; 104. filter screen; 105. activated carbon adsorption layer; 106. first air outlet; 107. baffle; 108. sealing gasket; 2. air compressor; 3. air buffer tank; 4. freeze dryer; 5. filter assembly; 501. outer frame; 502. pull rod; 503. second air inlet; 504. connecting rod; 505. filter; 506. connecting plate; 507. mounting ring; 508. second air outlet; 509. annular brush; 6. connecting pipe; 7. cleaning structure; 701. scraper; 702. connecting column; 703. handle; 704. cleaning brush; 8. nitrogen generator; 9. oxygen generator. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0020] Reference Figure 1-5 A nitrogen and oxygen combined preparation device comprises an air buffer tank 3, a connecting pipe 6 is fixedly installed on the surface of the air buffer tank 3, the connecting pipe 6 is in two groups, an air compressor 2 and a freeze dryer 4 are fixedly installed on opposite backs of the connecting pipe 6, a pretreatment structure 1 is fixedly installed on the upper surface of the air compressor 2, a cleaning structure 7 is embedded in the front surface of the pretreatment structure 1, a filter assembly 5 is fixedly installed on one side surface of the freeze dryer 4, and a nitrogen generator 8 and an oxygen generator 9 are fixedly connected to one side of the filter assembly 5;

[0021] The pretreatment structure 1 includes a buffer plate 101, a first air inlet 102, a housing 103, a filter screen 104, an activated carbon adsorption layer 105, a first air outlet 106, a baffle 107, and a sealing gasket 108. The first air inlet 102 is embedded and installed on one side surface of the housing 103, the front surface of the housing 103 is located near the bottom and embedded with a sealing gasket 108, the interior of the sealing gasket 108 is embedded and installed with a baffle 107, the lower surface of the housing 103 is located near one side and embedded with the first air outlet 106, the interior of the housing 103 is located near one side and embedded with a buffer plate 101, and the buffer plate 101 has a buffering effect on the air , to prevent air from directly impacting the filter 104 and shortening the service life of the filter 104, an activated carbon adsorption layer 105 is embedded and installed in the interior of the shell 103 near the other side, and a filter 104 is embedded and installed in the interior of the shell 103 on one side of the activated carbon adsorption layer 105; the cleaning structure 7 includes a scraper 701, a connecting column 702, a handle 703, and a cleaning brush 704. The handle 703 is fixedly installed on the front surface of the connecting column 702, the scraper 701 is fixedly installed on the rear surface of the connecting column 702, and the cleaning brush 704 is fixedly installed on one side of the scraper 701; the pre-treatment structure 1 and the cleaning structure 7 are embedded through the connecting column 702 The front surface of the housing 103 is installed above the baffle 107, and the housing 103 is fixedly installed on the upper surface of the air compressor 2; the filter assembly 5 includes an outer frame 501, a pull rod 502, a second air inlet 503, a connecting rod 504, a filter 505, a connecting plate 506, a mounting ring 507, a second air outlet 508, and an annular brush 509. The second air outlet 508 is embedded and installed on one side surface of the outer frame 501, and one side of the second air outlet 508 can be connected to the oil-water filtering structure. The second air inlet 503 is embedded and installed on the other side surface of the outer frame 501. One side surface of the outer frame 501 is located in front of and behind the second air inlet 503. A connecting rod 504 is installed, and the connecting rod 504 is divided into two groups. A pull rod 502 is fixedly connected to the surface of one side of the connecting rod 504, and a connecting plate 506 is fixedly connected to the surface of the other side of the connecting rod 504. An annular brush 509 is embedded and installed on the inner surface of the connecting plate 506. A mounting ring 507 is embedded and installed inside the annular brush 509 inside the outer frame 501. A filter 505 is installed on the surface of the mounting ring 507. The contact surfaces of the filter 505 and the mounting ring 507 are both provided with threads, that is, the filter 505 and the mounting ring 507 are connected by threads; the filter assembly 5 is fixedly installed on the surface of one side of the freeze dryer 4 through the second air inlet 503.

[0022] The implementation principle of the embodiment of the nitrogen and oxygen combined preparation device of the present application is as follows: when in use, air is first input into the interior of the pretreatment structure 1 for pretreatment, then compressed by the air compressor 2, buffered and stored by the air buffer tank 3, freeze-dried by the freeze dryer 4, and filtered by the filter component 5. Each process is connected by a connecting pipe 6. The impurities inside the pretreatment structure 1 are processed by the cleaning structure 7. Then, the compressed air as the raw gas enters the adsorption tower from the bottom of the nitrogen generator 8. Carbon molecular sieve is used as the adsorbent. The principle of pressurized adsorption and reduced pressure desorption is used to adsorb impurities from the compressed air. And release oxygen, thereby separating nitrogen. The nitrogen generator 8 has two adsorption towers, one tower is under pressure adsorption, and the other tower is undergoing analytical regeneration. During adsorption, the adsorbent in the tower adsorbs gases other than nitrogen, and the generated product gas (nitrogen) is discharged from the top of the adsorption tower to the nitrogen storage tank; during regeneration, the gases other than nitrogen adsorbed by the adsorbent can be discharged out of the tower by emptying or vacuuming, and then part of the product gas (nitrogen) is introduced into the adsorption tower for analytical regeneration to make the pressure in the tower uniform. When the pressure in the tower reaches the set pressure value, stop inputting product gas to complete the decomposition of the adsorption tower. Analysis and regeneration; under the control of the controller, the two towers operate alternately at a set interval to obtain the required nitrogen; the oxygen generator 9 also has the same process and the same principle; air enters the interior of the housing 103 from the first air inlet 102, is buffered by the buffer plate 101, and is discharged from the first air outlet 106 after being filtered by the filter screen 104 and the activated carbon adsorption layer 105. When the impurities inside the housing 103 need to be cleaned, the baffle 107 is opened, the handle 703 is pinched and pulled forward, so that the scraper 701 pushes the impurities out, and when the scraper 701 moves, it drives the cleaning brush 7 04 rubs the surface of the filter 104 to prevent clogging; when air enters the outer frame 501 from the second air inlet 503, the air is filtered by the filter 505 and then discharged from the second air outlet 508. Pulling the pull rod 502 to one side allows the connecting rod 504 to drive the connecting plate 506 to move, so that the annular brush 509 rubs on the surface of the filter 505, thereby scraping off impurities on the surface of the filter 505, thereby reducing the frequency of replacing the filter 505. When the filter 505 needs to be replaced, it can be directly rotated and unscrewed from the surface of the mounting ring 507.

[0023] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A nitrogen and oxygen combined production device, characterized in that: The invention comprises an air buffer tank (3), a connecting pipe (6) is fixedly mounted on the surface of the air buffer tank (3), the connecting pipe (6) is in two groups, an air compressor (2) and a freeze dryer (4) are fixedly mounted on opposite back surfaces of the connecting pipe (6), a pretreatment structure (1) is fixedly mounted on the upper surface of the air compressor (2), a cleaning structure (7) is embedded in the front surface of the pretreatment structure (1), a filter assembly (5) is fixedly mounted on one side surface of the freeze dryer (4), and a nitrogen generator (8) and an oxygen generator (9) are fixedly connected to one side of the filter assembly (5).

2. A nitrogen and oxygen combined production device according to claim 1, characterized in that: The pretreatment structure (1) comprises a buffer plate (101), a first air inlet (102), a shell (103), a filter (104), an activated carbon adsorption layer (105), a first air outlet (106), a baffle (107), and a sealing gasket (108); the first air inlet (102) is embedded and installed on one side surface of the shell (103); the sealing gasket (108) is embedded and installed on the front surface of the shell (103) near the lower position; the baffle (107) is embedded and installed inside the sealing gasket (108); the first air outlet (106) is embedded and installed on the lower surface of the shell (103) near one side; the buffer plate (101) is embedded and installed inside the shell (103) near one side; the activated carbon adsorption layer (105) is embedded and installed inside the shell (103) near the other side; and the filter screen (104) is embedded and installed on one side of the activated carbon adsorption layer (105) inside the shell (103).

3. A nitrogen and oxygen combined production device according to claim 2, characterized in that: The cleaning structure (7) comprises a scraper (701), a connecting column (702), a handle (703), and a cleaning brush (704); the handle (703) is fixedly mounted on the front surface of the connecting column (702); the scraper (701) is fixedly mounted on the rear surface of the connecting column (702); and the cleaning brush (704) is fixedly mounted on one side surface of the scraper (701).

4. A nitrogen and oxygen combined production device according to claim 3, characterized in that: The pre-treatment structure (1) and the cleaning structure (7) are embedded and installed on the front surface of the housing (103) via a connecting column (702) and are located above the baffle (107). The housing (103) is fixedly installed on the upper surface of the air compressor (2).

5. A nitrogen and oxygen combined production device according to claim 4, characterized in that: The filter assembly (5) comprises an outer frame (501), a pull rod (502), a second air inlet (503), a connecting rod (504), a filter (505), a connecting plate (506), a mounting ring (507), a second air outlet (508), and an annular brush (509); the second air outlet (508) is embedded and mounted on a surface of one side of the outer frame (501); the second air inlet (503) is embedded and mounted on a surface of the other side of the outer frame (501); and the surface of one side of the outer frame (501) is located in front of the second air inlet (503). Connecting rods (504) are embedded and installed at the rear, and the connecting rods (504) are divided into two groups. A pull rod (502) is fixedly connected to the surface of one side of the connecting rod (504), and a connecting plate (506) is fixedly connected to the surface of the other side of the connecting rod (504). An annular brush (509) is embedded and installed on the inner surface of the connecting plate (506). A mounting ring (507) is embedded and installed inside the annular brush (509) inside the outer frame (501), and a filter (505) is sleeved and installed on the surface of the mounting ring (507).

6. A nitrogen and oxygen combined production device according to claim 5, characterized in that: The filter assembly (5) is fixedly mounted on a side surface of the freeze dryer (4) via the second air inlet (503).

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