Oxygen-enriched tail gas recycling device of nitrogen generator

Abstract

The utility model relates to nitrogen making machine technical field, concretely is a kind of oxygen-enriched tail gas recycling device of nitrogen making machine, including main body mechanism, the main body mechanism includes exhaust pipe, the inside of exhaust pipe is provided with outer ring, the inside of exhaust pipe is fixedly connected with the outside of outer ring, the inner surface of outer ring is provided with filter screen, the inner surface of outer ring is fixedly connected with the outside of filter screen, this oxygen-enriched tail gas recycling device of nitrogen making machine, the top side of exhaust pipe is designed with liquid inlet valve, one side of liquid inlet valve is connected with sub -pipe and female pipe respectively, therefore, liquid is introduced into liquid inlet valve by water pump, liquid is made into sub -pipe by controlling liquid inlet valve, then in entering the inner of distributor one, liquid is made into spray ring by distributor one, so that when gas passes through filter screen, the fine impurity particles remaining in tail gas are adsorbed by the mist body sprayed by spray ring, the purity of tail gas is improved.

Description

Technical Field

[0001] This utility model relates to the field of nitrogen generator technology, specifically to a nitrogen generator oxygen-enriched tail gas recovery and utilization device. Background Technology

[0002] A nitrogen generator is a device specifically designed to produce nitrogen gas. It uses air as raw material and employs physical or chemical methods to separate nitrogen from oxygen and other gases in the air, thereby obtaining high-purity nitrogen. It features simple operation, a high degree of automation, and a continuous and stable gas supply. It can produce nitrogen of different purities and flow rates according to different needs, and is widely used in many fields such as chemical, electronics, food, and pharmaceutical industries, providing the necessary nitrogen environment for production processes in various industries, playing a role in protection and displacement.

[0003] In existing technologies, nitrogen generators can be classified into three types based on different classification methods: cryogenic air separation, molecular sieve air separation, and membrane air separation. In molecular sieve air separation, air is typically pre-treated to remove large particulate impurities such as dust and water vapor before entering an adsorption tower containing molecular sieves. Inside the adsorption tower, the molecular sieves adsorb impurities such as oxygen and carbon dioxide from the air. Because the molecular sieves have a relatively weak adsorption capacity for nitrogen, nitrogen passes through the adsorption tower and is collected as the product gas. The oxygen and other gases adsorbed by the molecular sieves, after reaching a certain adsorption level, are discharged from the adsorption tower through switching valves and other devices. This discharged gas is the oxygen-enriched tail gas.

[0004] However, during the discharge process, the exhaust gas contains certain impurities, which leads to impurities that result in impurities during the recovery process. This makes it difficult to effectively remove fine impurities such as dust, aerosols, and small molecule pollutants from the exhaust gas, resulting in low purity of the recovered gas. This makes it difficult to meet the requirements of high-demand industrial applications and limits the scope of use of the recovered gas. To address this, we propose an oxygen-enriched exhaust gas recovery and utilization device for a nitrogen generator. Utility Model Content

[0005] One of the technical problems this application aims to solve is to improve the purity of oxygen-enriched exhaust gas by purifying it during the emission process.

[0006] To address the aforementioned technical problems, this application provides an oxygen-enriched exhaust gas recovery and utilization device for a nitrogen generator, comprising a main body, a driving mechanism on the top side of the main body, a limiting mechanism inside the main body, an exhaust pipe, an outer ring inside the exhaust pipe, the inside of the exhaust pipe being fixedly connected to the outside of the outer ring, a filter screen on the inner surface of the outer ring, the inner surface of the outer ring being fixedly connected to the outside of the filter screen, a collar at the center of the filter screen, the center of the filter screen being rotatably connected to the outside of the collar, a spray ring at one end of the collar, the one end of the collar being rotatably connected to the inner wall of one end of the spray ring, a liquid distribution plate on the inner side of the spray ring, and the inner side of the spray ring being fixedly connected to the outer side of the liquid distribution plate.

[0007] In some embodiments, the drive mechanism includes a motor, the output end of which is provided with a worm gear, the output end of which is fixedly connected to the top end of the worm gear, the outer side of the worm gear is rotatably connected through the inner wall of the exhaust pipe, the outer side of the worm gear is provided with a worm wheel, the outer side of the worm gear and the outer side of the worm wheel are rotatably meshed, one end of the center of the worm gear is fixedly connected to one end of a collar, and one end of the motor is fixedly connected to the top side of the exhaust pipe.

[0008] In some embodiments, the limiting mechanism includes a bracket, a U-plate is provided at the top of the bracket, the top of the bracket is fixedly connected to the bottom side of the U-plate, one end of the U-plate is fixedly connected to one side of the liquid distribution plate and the spray ring respectively, and the bottom end of the bracket is fixedly connected to the inside of the exhaust pipe.

[0009] In some embodiments, a second liquid distribution plate is provided inside the collar, and the inside of the collar is fixedly connected to the outside of the second liquid distribution plate. A connecting rod is provided on one side of the second liquid distribution plate, and the bottom end of the connecting rod is fixedly connected to one side of the collar. A nozzle is provided on one side of the collar, and one end of the nozzle is fixedly connected to one side of the collar.

[0010] In some embodiments, a mother tube is provided at the center of the second liquid distribution plate, and the center of the second liquid distribution plate is rotatably connected to one end of the mother tube. The outer side of the mother tube is rotatably connected through the center of the first liquid distribution plate. A daughter tube is provided on one side of the first liquid distribution plate, and one side of the first liquid distribution plate is fixedly connected to one end of the daughter tube.

[0011] In some embodiments, the outer sides of both the sub-pipe and the main pipe are fixedly connected to the exhaust pipe through it. An inlet valve is provided on the top side of the exhaust pipe. The top side of the exhaust pipe is fixedly connected to the bottom side of the inlet valve. One side of the inlet valve is fixedly connected to one end of the sub-pipe and the main pipe, respectively. One side of the inlet valve is fixedly connected to the connection end of the water pump.

[0012] In some embodiments, a switching valve is provided at one end of the exhaust pipe, and the bottom side of the switching valve is fixedly connected to one end of the exhaust pipe. A connecting pipe is provided on one side of the switching valve, and one side of the switching valve is fixedly connected to one end of the connecting pipe. A tank is provided at the other end of the connecting pipe, and the other end of the connecting pipe is fixedly connected to one side of the bottom of the tank.

[0013] In some embodiments, an adsorption tower is provided inside the tank, and the inside of the tank is fixedly connected to the outside of the adsorption tower.

[0014] This utility model has at least the following beneficial effects:

[0015] 1. An outer ring is designed in the exhaust pipe, and a filter screen is designed on the inner side of the outer ring. Since the gas will pass through the filter screen when it is in the exhaust pipe, a liquid inlet valve is designed on the top side of the exhaust pipe. A daughter pipe and a mother pipe are connected to one side of the liquid inlet valve. Therefore, liquid is introduced into the liquid inlet valve by a water pump. By controlling the liquid inlet valve, the liquid enters the daughter pipe and then enters the liquid distribution plate. The liquid distribution plate then enters the spray ring. As the gas passes through the filter screen, the mist sprayed by the spray ring adsorbs the fine impurity particles remaining in the exhaust gas, thereby improving the purity of the exhaust gas.

[0016] 2. Start the motor, causing the worm gear connected to it to mesh with the worm wheel during rotation. Simultaneously, the worm wheel is mounted on the collar, which drives the connecting rod to rotate synchronously. This causes the nozzles on the connecting rod to begin impacting the impurities on the filter screen in a circumferential manner, creating an active impurity removal system. When there is a significant risk of the filter screen becoming clogged with impurities, the liquid inlet channel can be quickly switched, and the motor can be started to drive the nozzles to circumferentially flush the filter screen. This changes the traditional passive filtration mode and can remove impurities in a timely manner at the initial stage of adhesion. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the main body component of this utility model;

[0019] Figure 3 This is a top view of the main structural components of this utility model;

[0020] Figure 4 This is a cross-sectional structural diagram of the main body components of this utility model;

[0021] Figure 5 This is an enlarged structural diagram of the main body components of this utility model;

[0022] Figure 6This is a schematic diagram of some components of the main structure of this utility model;

[0023] Figure 7 This is a schematic diagram of the disassembled structure of the main body components of this utility model;

[0024] Figure 8 This is a side view of the drive mechanism assembly of this utility model;

[0025] In the diagram: 1. Main structure; 11. Tank; 12. Adsorption tower; 13. Connecting pipe; 14. Switching valve; 15. Exhaust pipe; 16. Inlet valve; 17. Daughter pipe; 18. Main pipe; 19. Separator plate one; 110. Spray ring; 111. Collar ring; 112. Separator plate two; 113. Connecting rod; 114. Nozzle; 116. Filter screen; 117. Outer ring; 118. Water pump;

[0026] 2. Drive mechanism; 21. Motor; 22. Worm gear; 23. Worm wheel;

[0027] 3. Limiting mechanism; 31. Bracket; 32. U-plate. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1: Please refer to Figures 1-8This utility model provides a technical solution: an oxygen-enriched exhaust gas recovery and utilization device for a nitrogen generator, including a main body 1, a driving mechanism 2 provided on the top side of the main body 1, a limiting mechanism 3 provided inside the main body 1, an exhaust pipe 15, an outer ring 117 provided inside the exhaust pipe 15, the inside of the exhaust pipe 15 being fixedly connected to the outside of the outer ring 117, a filter screen 116 provided on the inner surface of the outer ring 117, the inner surface of the outer ring 117 being fixedly connected to the outside of the filter screen 116, a collar 111 provided at the center of the filter screen 116, the center of the filter screen 116 being rotatably connected to the outside of the collar 111, a spray ring 110 provided at one end of the collar 111, and one end of the collar 111 being rotatably connected to the inner wall of one end of the spray ring 110. The spray ring 110 has a liquid distribution plate 19 on its inner side, which is fixedly connected to the outer side of the liquid distribution plate 19. A second liquid distribution plate 112 is located inside the collar 111, which is fixedly connected to the outer side of the second liquid distribution plate 112. A connecting rod 113 is located on one side of the second liquid distribution plate 112, which is fixedly connected to the bottom end of the connecting rod 113. The bottom end of the connecting rod 113 is fixedly connected to one side of the collar 111. A nozzle 114 is located on one side of the collar 111, which is fixedly connected to one end of the nozzle 114. A main tube 18 is located at the center of the second liquid distribution plate 112, which is rotatably connected to one end of the main tube 18. The outer side of the main tube 18... A rotatable connection is made through the center of the distribution plate 19. A sub-tube 17 is provided on one side of the distribution plate 19, and one end of the sub-tube 17 is fixedly connected to one side of the distribution plate 19. The outer sides of both the sub-tube 17 and the main tube 18 are fixedly connected through the exhaust pipe 15. An inlet valve 16 is provided on the top side of the exhaust pipe 15, and the top side of the exhaust pipe 15 is fixedly connected to the bottom side of the inlet valve 16. One side of the inlet valve 16 is fixedly connected to one end of the sub-tube 17 and the main tube 18, respectively. One side of the inlet valve 16 is fixedly connected to the connection end of the water pump 118. A switching valve 14 is provided at one end of the exhaust pipe 15, and the bottom side of the switching valve 14 is fixedly connected to one end of the switching valve 14. A connecting pipe 13 is provided on one side of the switching valve 14. One end of the connecting pipe 13 is fixedly connected to the other end of the connecting pipe 13, and the other end of the connecting pipe 13 is provided with a tank 11. The other end of the connecting pipe 13 is fixedly connected to one side of the bottom end of the tank 11. An adsorption tower 12 is provided inside the tank 11, and the inside of the tank 11 is fixedly connected to the outside of the adsorption tower 12. The driving mechanism 2 includes a motor 21. A worm 22 is provided at the output end of the motor 21. The output end of the motor 21 is fixedly connected to the top end of the worm 22. The outside of the worm 22 is rotatably connected to the inner wall of the exhaust pipe 15. A worm wheel 23 is provided on the outside of the worm 22. The outside of the worm 22 is rotatably meshed with the outside of the worm wheel 23. One end of the center of the worm 22 is fixedly connected to one end of the collar 111. One end of the motor 21 is fixedly connected to the top side of the exhaust pipe 15.

[0030] In operation, the oxygen-enriched exhaust gas recovery and utilization device of this type of nitrogen generator has an adsorption tower 12 installed in the tank 11. The adsorption tower 12 is filled with molecular sieves, which adsorb oxygen, carbon dioxide, and other impurities in the air, thereby achieving nitrogen separation and enrichment. When a certain level is reached, a connecting pipe 13 is installed at one end of the tank 11, and one end of the connecting pipe 13 is connected to a switching valve 14. The oxygen-enriched exhaust gas then enters the exhaust pipe 15 under the action of the switching valve 14. To filter the discharged oxygen-enriched exhaust gas for reuse, an outer ring 117 is designed in the exhaust pipe 15. A filter screen 116 is designed inside the outer ring 117, and a collar 111 is located at the center of the filter screen 116. One end of the collar 111 is rotatably connected to a spray ring 1. 10. Since the gas passes through the filter screen 116 when it is in the exhaust pipe 15, a liquid inlet valve 16 is designed on the top side of the exhaust pipe 15. A daughter pipe 17 and a mother pipe 18 are connected to one side of the liquid inlet valve 16. Therefore, the liquid is introduced into the liquid inlet valve 16 by the water pump 118. By controlling the liquid inlet valve 16, the liquid enters the daughter pipe 17 and then enters the liquid distribution plate 19. The liquid distribution plate 19 then enters the spray ring 110. As the gas flows through the filter screen 116, the mist sprayed by the spray ring 110 adsorbs the fine impurity particles remaining in the exhaust gas, further purifying the exhaust gas and improving the purity of the exhaust gas. Then, the purified gas is recovered by the collection device, and these impurities fall onto the filter screen 116 due to the pressure of the gas during emission.

[0031] To prevent large impurities from clogging the filter screen 116, a second liquid distribution plate 112 is designed in the collar 111. A main pipe 18 is located at the center of the second liquid distribution plate 112, with one end of the main pipe fixedly connected to one side of the inlet valve 16. By operating the inlet valve 16, the liquid passage of the auxiliary pipe 17 is closed, while the inlet passage of the main pipe 18 is opened, allowing liquid to enter the second liquid distribution plate 112. A connecting rod 113 is designed on one side of the second liquid distribution plate 112, and the two are fixedly connected. A nozzle 114 is located on one side of the connecting rod 113, with the nozzle 114 outputting towards the filter screen 116. At this time, the motor 21 is started, causing the liquid to... During the rotation of the connected worm gear 22, the worm wheel 23 engages with it. Simultaneously, the worm wheel 23 is mounted on the collar 111. Therefore, the collar 111 drives the connecting rod 113 to rotate synchronously, causing the nozzle 114 on the connecting rod 113 to begin impacting the impurities on the filter screen 116 in a circumferential manner. This constructs an active impurity removal system. When there is a significant risk of impurity blockage on the filter screen 116, the liquid inlet channel can be quickly switched, and the motor 21 can be started to drive the nozzle 114 to circumferentially flush the filter screen 116. This changes the traditional passive filtration mode, enabling timely removal of impurities in the early stages of attachment, effectively preventing the filter screen 116 from becoming clogged, and ensuring the smooth operation of the exhaust gas filtration process.

[0032] Example 2: Please refer to Figure 4 The limiting mechanism 3 includes a bracket 31, a U-plate 32 is provided at the top of the bracket 31, the top of the bracket 31 is fixedly connected to the bottom side of the U-plate 32, one end of the U-plate 32 is fixedly connected to one side of the liquid distribution plate 19 and the spray ring 110 respectively, and the bottom end of the bracket 31 is fixedly connected to the inside of the exhaust pipe 15.

[0033] A U-plate 32 is connected to one side of the liquid distribution plate 19 and the spray ring 110. A bracket 31 is designed on the bottom side of the U-plate 32. The bottom end of the bracket 31 is fixedly connected to the inside of the exhaust pipe 15. Thus, through the action of the U-plate 32 and the bracket 31, when the collar 111 rotates, the liquid distribution plate 19 and the spray ring 110 can maintain their initial posture in a stable manner. The stable posture ensures the uniformity and accuracy of the spray mist sprayed by the spray ring 110, so that impurities in the exhaust gas can be fully adsorbed and filtered. It will not cause some areas to be incompletely purified or over-purified due to component shaking, ensuring that every piece of exhaust gas passing through the filter screen 116 can be purified with high quality.

[0034] Please see Figures 1-8Because a connecting pipe 13 is installed at one end of the tank 11, and one end of the connecting pipe 13 is connected to a switching valve 14, the oxygen-enriched exhaust gas enters the exhaust pipe 15 under the action of the switching valve 14. In order to filter the discharged oxygen-enriched exhaust gas for reuse, an outer ring 117 is designed in the exhaust pipe 15. A filter screen 116 is designed on the inner side of the outer ring 117, and a collar 111 is located at the center of the filter screen 116. One end of the collar 111 is rotatably connected to a spray ring 110. When the gas is in the exhaust pipe 15, it passes through the filter screen 116. Therefore, an inlet valve 16 is designed on the top side of the exhaust pipe 15. A daughter pipe 17 and a mother pipe 18 are connected to one side of the inlet valve 16. Thus, liquid is introduced into the inlet valve 16 by the water pump 118. By controlling the inlet valve 16, the liquid enters the daughter pipe 17, and then enters the distributor plate 19. The distributor plate 19 then directs the liquid into the spray ring 110, allowing the gas to pass through the filter screen 116 and be sprayed... The mist sprayed by ring 110 adsorbs fine impurity particles remaining in the exhaust gas. A second liquid distribution plate 112 is designed within the collar 111, with a main pipe 18 at its center. One end of the main pipe is fixedly connected to one side of the inlet valve 16. By operating the inlet valve 16, the liquid passage of the secondary pipe 17 is closed, while the inlet passage of the main pipe 18 is opened, allowing liquid to enter the second liquid distribution plate 112. A connecting rod 113 is designed on one side of the second liquid distribution plate 112. The two are fixedly connected, and a nozzle 114 is provided on one side of the connecting rod 113. The output direction of the nozzle 114 is towards the filter screen 116. At this time, the motor 21 is started, so that the worm gear 22 connected to it rotates and the worm wheel 23 engages. At the same time, the worm wheel 23 is installed on the collar 111. Therefore, the collar 111 will drive the connecting rod 113 to rotate synchronously, so that the nozzle 114 on the connecting rod 113 will start to impact the impurities on the filter screen 116 in a circumferential manner.

[0035] A bracket 31 is designed on the bottom side of the U plate 32. The bottom end of the bracket 31 is fixedly connected to the inside of the exhaust pipe 15. Thus, through the action of the U plate 32 and the bracket 31, when the collar 111 rotates, the liquid distribution plate 19 and the spray ring 110 can maintain their initial posture in a stable manner. The stable posture ensures the uniformity and accuracy of the spray mist sprayed by the spray ring 110.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A device for recovering and utilizing oxygen-enriched tail gas from a nitrogen generator, characterized in that: The system includes a main body (1), a drive mechanism (2) on the top side of the main body (1), a limit mechanism (3) inside the main body (1), an exhaust pipe (15), an outer ring (117) inside the exhaust pipe (15), the inside of the exhaust pipe (15) being fixedly connected to the outside of the outer ring (117), a filter screen (116) on the inner surface of the outer ring (117), and the inner surface of the outer ring (117) being connected to the filter screen (116). 6) The outer side is fixedly connected. A collar (111) is provided at the center of the filter screen (116). The center of the filter screen (116) is rotatably connected to the outer side of the collar (111). A spray ring (110) is provided at one end of the collar (111). One end of the collar (111) is rotatably connected to the inner wall of one end of the spray ring (110). A liquid distribution plate (19) is provided on the inner side of the spray ring (110). The inner side of the spray ring (110) is fixedly connected to the outer side of the liquid distribution plate (19).

2. The oxygen-enriched tail gas recovery and utilization device for a nitrogen generator according to claim 1, characterized in that: The drive mechanism (2) includes a motor (21), and a worm (22) is provided at the output end of the motor (21). The output end of the motor (21) is fixedly connected to the top end of the worm (22). The outer side of the worm (22) is rotatably connected to the inner wall of the exhaust pipe (15). A worm wheel (23) is provided on the outer side of the worm (22). The outer side of the worm (22) is rotatably meshed with the outer side of the worm wheel (23). One end of the center of the worm (22) is fixedly connected to one end of the collar (111). One end of the motor (21) is fixedly connected to the top side of the exhaust pipe (15).

3. The oxygen-enriched tail gas recovery and utilization device for a nitrogen generator according to claim 2, characterized in that: The limiting mechanism (3) includes a bracket (31), a U-plate (32) is provided at the top of the bracket (31), the top of the bracket (31) is fixedly connected to the bottom side of the U-plate (32), one end of the U-plate (32) is fixedly connected to one side of the liquid distribution plate (19) and the spray ring (110) respectively, and the bottom end of the bracket (31) is fixedly connected to the inside of the exhaust pipe (15).

4. The oxygen-enriched tail gas recovery and utilization device for a nitrogen generator according to claim 3, characterized in that: The collar (111) is provided with a liquid distribution plate two (112) inside. The inside of the collar (111) is fixedly connected to the outside of the liquid distribution plate two (112). A connecting rod (113) is provided on one side of the liquid distribution plate two (112). The bottom end of the connecting rod (113) is fixedly connected to one side of the collar (111). A nozzle (114) is provided on one side of the collar (111). One end of the nozzle (114) is fixedly connected to one side of the collar (111).

5. The oxygen-enriched tail gas recovery and utilization device for a nitrogen generator according to claim 4, characterized in that: A mother tube (18) is provided at the center of the second liquid distribution plate (112). The center of the second liquid distribution plate (112) is rotatably connected to one end of the mother tube (18). The outer side of the mother tube (18) is rotatably connected to the center of the first liquid distribution plate (19). A daughter tube (17) is provided on one side of the first liquid distribution plate (19). One side of the first liquid distribution plate (19) is fixedly connected to one end of the daughter tube (17).

6. The oxygen-enriched tail gas recovery and utilization device for a nitrogen generator according to claim 5, characterized in that: The outer sides of the sub-pipe (17) and the main pipe (18) are fixedly connected to the exhaust pipe (15). The top side of the exhaust pipe (15) is provided with an inlet valve (16). The top side of the exhaust pipe (15) is fixedly connected to the bottom side of the inlet valve (16). One side of the inlet valve (16) is fixedly connected to one end of the sub-pipe (17) and the main pipe (18) respectively. One side of the inlet valve (16) is fixedly connected to the connection end of the water pump (118).

7. The oxygen-enriched tail gas recovery and utilization device for a nitrogen generator according to claim 6, characterized in that: One end of the exhaust pipe (15) is provided with a switching valve (14), and one end of the exhaust pipe (15) is fixedly connected to the bottom side of the switching valve (14). One side of the switching valve (14) is provided with a connecting pipe (13), and one side of the switching valve (14) is fixedly connected to one end of the connecting pipe (13). The other end of the connecting pipe (13) is provided with a tank (11), and the other end of the connecting pipe (13) is fixedly connected to one side of the bottom of the tank (11).

8. The oxygen-enriched tail gas recovery and utilization device for a nitrogen generator according to claim 7, characterized in that: An adsorption tower (12) is installed inside the tank (11), and the inside of the tank (11) is fixedly connected to the outside of the adsorption tower (12).

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