Oxygen-enriched fan

Abstract

The invention relates to the technical field of oxygen-enriched fans and oxygen-enriched separation, in particular to an oxygen-enriched fan. The device comprises a skid-mounted shell, and an equipment base, a motor, a bearing and an oxygen-enriched fan main body which are arranged in the skid-mounted shell, and efficient separation of oxygen and nitrogen in fresh air is realized through the synergistic effect of an axial flow guide plate, a centrifugal flow guide plate, an oxygen-enriched separation ring and other components. The device achieves the purposes of increasing the oxygen concentration and reducing the energy consumption, is compact in structure and easy to maintain, and can be widely applied to the fields of industrial combustion improver preparation and the like.

Description

Technical Field

[0001] The present application relates to the field of oxygen-enriched blowers and oxygen-enriched separation technology, and in particular to oxygen-enriched blowers. Background Art

[0002] With the rapid development of society, environmental issues have gradually become a global focus. To address climate change and the energy crisis, the international community has proposed a variety of energy-saving and emission-reduction measures. The implementation of the "carbon peak and carbon neutrality" policy has placed higher demands on energy-saving technologies for combustion equipment. In industrial production, combustion equipment is widely used in the power, chemical, and metallurgical industries, accounting for a significant proportion of energy consumption and emissions. To improve combustion efficiency and reduce energy consumption, the use of oxygen-enriched air to assist combustion has become an effective method. Oxygen-enriched air can significantly increase flame temperature and heat exchange intensity, thereby optimizing the combustion process and achieving more efficient energy conversion. Currently, the industry mainly uses the following methods to produce oxygen-enriched air: first, extracting high-concentration oxygen through the combined action of catalysts and electromagnetic fields; second, separating oxygen through the selective permeation of membranes; and third, separating oxygen from air using cryogenic distillation technology. While these methods can increase oxygen concentration to a certain extent, they all have certain limitations. For example, methods using catalysts or membrane modules require additional consumables, while cryogenic distillation technology places high demands on equipment complexity and energy consumption. A common drawback of the aforementioned existing technologies is their reliance on specific consumables (such as catalysts and membrane modules) during long-term operation, which increases equipment maintenance costs and limits operational stability. Furthermore, the complex design makes equipment maintenance and replacement difficult, making it difficult to meet the dual requirements of cost-effectiveness and reliability in practical applications. Therefore, a new oxygen-enriched blower that reduces consumables and lowers ongoing maintenance costs is urgently needed to ensure long-term stable operation. Summary of the Invention

[0003] The purpose of this application is to overcome the above technical problems and provide an oxygen-enriched blower. An oxygen-enriched blower includes a skid-mounted shell and an equipment base, a motor, a bearing, and an oxygen-enriched blower body arranged in the skid-mounted shell. The oxygen-enriched blower body includes a fixed component and a rotating component. The rotating component is connected to the equipment base via a bearing. The rotating component includes a fresh air inlet, an axial guide plate, a centrifugal guide plate, an oxygen-enriched separation ring, a separation chamber support plate, and a secondary separation ring. The fixed component includes a gas isolation ring, an oxygen-enriched chamber, and a nitrogen-enriched chamber. The end of the centrifugal guide plate is connected to the oxygen-enriched separation ring. The oxygen-enriched separation ring is provided with an oxygen-enriched separation hole. The separation chamber support plate connects the oxygen-enriched separation ring and the secondary separation ring. The secondary separation ring is provided with an oxygen-enriched secondary separation hole. The back plate of the rotating component is provided with a nitrogen-enriched separation hole. A fresh air inlet grille, an oxygen-enriched air outlet, and a nitrogen-enriched air outlet are arranged outside the skid-mounted shell. By adopting the above technical solution, an oxygen-enriched blower is provided, which utilizes the principle of mechanical rotary separation to increase the oxygen concentration in the combustion aid. Through the action of centrifugal force, oxygen molecules with larger relative molecular mass are concentrated at the end of the centrifugal guide plate and enter the oxygen-enriched separation ring. The high-concentration oxygen-enriched air is further separated and output through the oxygen-enriched separation hole and the secondary separation ring, which increases the oxygen concentration in the combustion aid and helps combustion equipment achieve higher temperature and energy-saving combustion. The separated nitrogen-enriched air is recovered through the nitrogen-enriched separation hole, effectively avoiding resource waste. The overall structure is compact and adopts an integrated skid-mounted design for easy installation and maintenance. No additional consumables are introduced, which reduces subsequent maintenance costs and failure rates and extends the service life of the equipment. Preferably, the axial guide plates are evenly arranged along the circumference, with a diversion angle of 15° to 45°, and the number is 6 to 12. By adopting the above technical solution, the axial guide plates are evenly arranged along the circumference, with a diversion angle of 15° to 45°, and the number is 6 to 12. It can effectively guide fresh air into the internal cavity of the rotating component along the predetermined direction, ensure uniform airflow distribution, reduce airflow turbulence, and thus improve separation efficiency. Optimize the airflow path and reduce energy loss; enhance the initial separation effect of oxygen and nitrogen, and provide higher quality gas input for the subsequent separation stage. Preferably, the centrifugal guide plates are evenly arranged along the circumference, with a guide angle of 25°~90° and a number of 6 to 18. By adopting the above technical solution, the centrifugal guide plates are evenly arranged along the circumference, with a guide angle of 25°~90° and a number of 6 to 18, which can effectively enhance the separation effect of fresh air inside the rotating component. Specifically, this design allows fresh air to be more fully fractionated by molecular weight under the action of centrifugal force, and oxygen molecules with larger relative molecular weight are concentrated and directed to the end of the centrifugal guide plate, thereby improving the oxygen enrichment separation efficiency. At the same time, by optimizing the guide angle and number, the airflow distribution is ensured to be uniform, energy loss is reduced, and the overall performance and energy saving effect of the oxygen enrichment blower are further improved. Preferably, the diameter of the oxygen enrichment separation holes is 8~20 mm, and the number is 40~120.By adopting the above technical solution, the diameter of the oxygen-enriched separation hole is set to 8~20mm, and the number is set to 40~120, which can effectively control the flow path and distribution state of fresh air during the centrifugal separation process. This design makes it easier for oxygen molecules with larger relative molecular mass to concentrate at the end of the centrifugal guide plate, and enter the subsequent separation link through the oxygen-enriched separation hole, thereby significantly improving the separation efficiency and concentration of oxygen-enriched air. At the same time, the pore size and number distribution within a reasonable range also help to maintain the stability of the separation process, avoiding the problem of blockage due to too small pore size or poor separation effect due to too large pore size. Preferably, the diameter of the oxygen-enriched secondary separation hole is 10~25mm, and the number is 40~160. By adopting the above technical solution, the diameter of the oxygen-enriched secondary separation hole is set to 10~25mm, and the number is set to 40~160, which can further optimize the gas flow characteristics during the secondary separation process. Specific benefits include: Firstly, oxygen-enriched secondary separation holes within this size and number range can effectively control the flow rate and distribution uniformity of the oxygen-enriched air after separation, ensuring a higher oxygen concentration when the oxygen-enriched air leaves the rotating component; secondly, the rationally arranged oxygen-enriched secondary separation holes help reduce airflow resistance and improve separation efficiency, thereby enhancing the overall performance and energy efficiency of the oxygen-enriched blower. Preferably, the oxygen-enriched separation holes are provided with separation hole bosses, with a height of 2 to 10 mm. By adopting this technical solution, the provision of separation hole bosses can effectively improve the separation efficiency of oxygen and nitrogen molecules. Specifically, the height of the separation hole bosses is 2 to 10 mm. This design allows oxygen molecules to be more easily concentrated under centrifugal force and pass through the oxygen-enriched separation holes to the next stage of the separation process, thereby increasing the concentration of oxygen-enriched air. Furthermore, this structure simplifies the separation process, eliminates the need for additional consumables, and reduces equipment maintenance costs and failure rates. Preferably, the nitrogen-enriched separation holes are elliptical holes, with a number of 6 to 20, an aperture of 20 to 50 mm, and a straight section length of 80 to 140 mm. By adopting the above technical solution, the nitrogen-rich separation holes are designed to be elliptical, and the number, aperture and straight section length are optimized. This design can effectively guide nitrogen molecules with a relatively small molecular weight to flow from the rotating component to the nitrogen-rich chamber, ensuring the high efficiency of the nitrogen separation process. The design of the elliptical holes helps to reduce the resistance during the gas flow and improve the nitrogen separation efficiency. The setting of 6 to 20 holes can avoid the impact of too many openings on the structural strength while ensuring the separation effect. The selection of the aperture range of 20 to 50 mm can not only meet the smooth passage of nitrogen molecules, but also prevent the mixing of oxygen molecules, thereby improving the separation purity. The setting of the straight section length of 80 to 140 mm further optimizes the flow path of nitrogen and reduces the energy loss during the separation process. Preferably, the oxygen-rich chamber and the nitrogen-rich chamber of the fixed component are connected to the oxygen-rich air outlet and the nitrogen-rich air outlet respectively through pipes.By adopting the above technical solution, the oxygen-enriched chamber and the nitrogen-enriched chamber are respectively connected to the corresponding outlets through pipes, which enables the effective discharge of the separated oxygen-enriched air and nitrogen-enriched air, avoids gas mixing, ensures the purity of the oxygen-enriched air and the separation effect of the nitrogen-enriched air, and thus improves the separation efficiency and reliability of the overall equipment. The oxygen-enriched chamber is connected to the oxygen-enriched air outlet through a pipe, ensuring that the oxygen-enriched air can be smoothly discharged and applied to combustion equipment, thereby improving the combustion temperature and energy saving effect. The nitrogen-enriched chamber is connected to the nitrogen-enriched air outlet through a pipe, ensuring that the nitrogen-enriched air is effectively separated and discharged, further optimizing the overall performance of gas separation. Preferably, the fresh air inlet grille is arranged outside the skid-mounted housing for introducing fresh air. By adopting the above technical solution, efficient introduction of fresh air is achieved. By arranging the fresh air inlet grille outside the skid-mounted housing, it is ensured that fresh air can smoothly enter the interior of the oxygen-enriched blower, providing a sufficient air source for the subsequent separation process. This design simplifies the air introduction process, does not require additional auxiliary equipment or consumables, and reduces the complexity and maintenance cost of the equipment.

[0004] In summary, the present application includes at least one of the following beneficial technical effects: 1. Through the principle of mechanical rotary separation, centrifugal force is used to separate oxygen and nitrogen, effectively increasing the oxygen concentration in the combustion aid, and providing combustion equipment with oxygen-enriched air with higher temperature and stronger heat exchange intensity, thereby optimizing the combustion process and improving the overall thermal cycle efficiency; 2. It does not rely on additional consumables such as catalysts and membrane components, simplifies the equipment structure, reduces long-term operation and maintenance costs, reduces the failure rate caused by aging or damage of consumables, and ensures the stability and reliability of the equipment; 3. By adjusting the motor speed, the oxygen content in the oxygen-enriched air can be flexibly controlled to adapt to the requirements of different combustion equipment and working conditions, thereby improving the versatility and applicability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0005] Figure 1 This is a schematic diagram of the oxygen-enriched blower structure of this application.

[0006] Figure 2 This is the decomposition of the oxygen-enriched fan structure of this application Figure 2 .

[0007] Figure 3 This is an exploded view of the main structure of the oxygen-enriched blower.

[0008] Figure 4 It is a cross-sectional view of a rotating component.

[0009] Explanation of the accompanying drawings: 1. Skid-mounted shell; 11. Air inlet grille; 12. Oxygen-enriched air outlet; 13. Nitrogen-enriched air outlet; 2. Equipment base; 3. Motor; 4. Bearing; 5. Oxygen-enriched blower body; 51. Fixed component; 511. Gas isolation ring; 512. Oxygen-enriched chamber; 513. Nitrogen-enriched chamber; 52. Rotating component; 521. Fresh air inlet; 522. Axial guide plate; 523. Centrifugal guide plate; 524. Oxygen-enriched separation ring; 5241. Oxygen-enriched separation hole; 52411. Separation hole boss; 525. Separation chamber support plate; 526. Secondary separation ring; 5261. Oxygen-enriched secondary separation hole; 527. Back plate; 5271. Nitrogen-enriched separation hole. DETAILED DESCRIPTION

[0010] The following is combined with Figure 1-4 This application is described in further detail.

[0011] The embodiment of this application discloses an oxygen-enriched blower. Figure 1-Figure 2 The energy-saving oxygen-enriched blower includes a skid-mounted shell 1 and an equipment base 2, a motor 3, a bearing 4 and an oxygen-enriched blower body 5 arranged in the skid-mounted shell 1, wherein the oxygen-enriched blower body 5 includes a fixed component 51 and a rotating component 52, the rotating component 52 is connected to the equipment base 2 through the bearing 4, and the fixed component 51 is welded to the equipment base 2, thereby achieving the effect of increasing the oxygen concentration in the combustion aid through mechanical rotation separation, and the reason for the generation of this beneficial effect is deduced: through mechanical rotation separation, centrifugal force is used to separate oxygen molecules and nitrogen molecules in the rotating component 52, thereby achieving the increase of the oxygen concentration in the combustion aid.

[0012] Reference Figure 3 、 Figure 4 Specifically, the rotating component 52 includes a fresh air inlet 521, an axial guide plate 522, a centrifugal guide plate 523, an oxygen-enriched separation ring 524, a separation chamber support plate 525, and a secondary separation ring 526. The fresh air inlet 521 is used to introduce fresh air. The axial guide plates 522 are evenly arranged along the circumference, with a guide angle of 15° to 45° and a number of 6 to 12. For example, 8 axial guide plates 522 with a guide angle of 30° can be selected, or 12 axial guide plates 522 with a guide angle of 45° can be selected. The function of the axial guide plates 522 is to guide the fresh air to flow axially and enter the internal chamber of the rotating component 52. Its structural features are: it is made of high-temperature resistant and corrosion-resistant metal material, is in the shape of an arc plate, is evenly distributed along the circumference, and is fixedly connected to the central axis of the rotating component 52.

[0013] Reference Figure 4The centrifugal deflectors 523 are evenly arranged along the circumference, with a diversion angle of 25° to 90° and a number of 6 to 18. For example, a diversion angle of 60° and 12 centrifugal deflectors 523 can be selected, or a diversion angle of 90° and 18 centrifugal deflectors 523 can be selected. The function of the centrifugal deflectors 523 is to use centrifugal force to concentrate oxygen molecules with a larger relative molecular mass at the end and nitrogen molecules with a smaller relative molecular mass at the front when the rotating component 52 rotates at high speed. Their structural features include: they are made of a high-strength, wear-resistant alloy material, are arc-shaped plates, are evenly distributed along the circumference, and are fixedly connected to the central axis of the rotating component 52.

[0014] The oxygen-enriched separation ring 524 is provided with oxygen-enriched separation holes 5241. These holes have diameters ranging from 8 to 20 mm and are numbered between 40 and 120. For example, holes 5241 with a diameter of 12 mm and a number of 80 can be used, or holes 5241 with a diameter of 20 mm and a number of 120 can be used. Separation hole bosses 52411 are provided at the oxygen-enriched separation holes 5241. These bosses have a height ranging from 2 to 10 mm. For example, bosses 52411 with a height of 5 mm or 10 mm can be used. These bosses further enhance the oxygen molecule screening effect. The oxygen-enriched separation ring 524 is constructed of high-precision stainless steel in a circular ring shape. It is fixedly connected to the end of the centrifugal guide plate 523 by bolts or welding.

[0015] The separation chamber support plates 525 connect the oxygen-enriched separation ring 524 and the secondary separation ring 526. The separation chamber support plates 525 are evenly distributed along the circumference. For example, six or twelve separation chamber support plates 525 can be used. The separation chamber support plates 525 divide the chamber between the oxygen-enriched separation ring 524 and the secondary separation ring 526 into multiple independent small chambers, thereby improving separation efficiency. Their structural features include being made of high-strength, corrosion-resistant metal in the form of elongated plates, evenly distributed along the circumference, and fixedly connected to the oxygen-enriched separation ring 524 and the secondary separation ring 526, respectively.

[0016] The secondary separation ring 526 is provided with oxygen-enriched secondary separation holes 5261. These holes have a diameter of 10-25 mm and a number of 40-160. For example, a diameter of 15 mm and 100 holes 5261 can be used, or a diameter of 25 mm and 160 holes 5261 can be used. The secondary separation ring 526 further separates the oxygen-enriched air after initial separation by the oxygen-enriched separation ring 524, thereby improving the purity of the oxygen-enriched air. Its structural features include: being made of high-precision stainless steel in a circular ring shape, it is fixedly connected to the separation chamber support plate 525 by bolts or welding.

[0017] Reference Figure 3 The fixed components include a gas isolation ring 511, an oxygen-rich chamber 512 and a nitrogen-rich chamber 513. The gas isolation ring 511 is arranged in the fixed component 51 to prevent the separated oxygen-rich air and nitrogen-rich air from mixing. Its structural features are: it is made of a highly sealing and high-pressure resistant rubber material, in the shape of a circular ring, the installation relationship is embedded in the fixed component 51, and the connection relationship is fixed by gluing or snapping. The oxygen-rich chamber 512 and the nitrogen-rich chamber 513 are respectively connected to the oxygen-rich air outlet 12 and the nitrogen-rich air outlet 13 through pipes. The structural features of the pipes are: they are made of a high-temperature resistant and corrosion-resistant metal material, in the shape of a circular tube, the installation relationship is to pass through the fixed component 51, and the connection relationship is to be fixed by flanges or welding.

[0018] Reference Figure 4 The back plate 527 of the rotating component 52 is provided with nitrogen-rich separation holes 5271. The nitrogen-rich separation holes 5271 are elliptical holes, with a number of 6 to 20, a hole diameter of 20 to 50 mm, and a straight section length of 80 to 140 mm. For example, 10 nitrogen-rich separation holes 5271 with a hole diameter of 30 mm and a straight section length of 120 mm can be selected, or 20 nitrogen-rich separation holes 5271 with a hole diameter of 50 mm and a straight section length of 140 mm can be selected. The function of the nitrogen-rich separation holes 5271 is to allow nitrogen molecules to pass through while blocking oxygen molecules from passing through. The structural features of the back plate 527 of the rotating component 52 are: it is made of a high-strength, wear-resistant alloy material, is in the shape of a circular plate, and is fixedly connected to the central axis of the rotating component 52 by bolts or welding.

[0019] The implementation principle of this embodiment is: to increase the oxygen concentration in the combustion-supporting agent through the principle of mechanical rotation separation. The specific process is as follows: fresh air enters the skid-mounted equipment through the fresh air inlet grille 11, the motor 3 drives the bearing 4 to rotate, and then drives the rotating component 52 in the oxygen-enriched blower body 5 to rotate, and the fresh air is sucked in through the fresh air inlet 521, and then passes through the axial guide plate 522 into the internal chamber of the rotating component 52. Under the action of centrifugal force, the fresh air flows toward the outside of the rotating component 52 along the centrifugal guide plate 523. After staying and separating in the chamber between adjacent centrifugal guide plates 523, oxygen molecules with larger relative molecular mass are concentrated at the end of the centrifugal guide plate 523, and pass through the separation hole boss 52411, through the oxygen-enriched separation hole 5241, into the chamber between the oxygen-enriched separation ring 524 and the secondary separation ring 526 for secondary separation. The further separated oxygen-enriched air leaves the rotating component 52 through the oxygen-enriched secondary separation hole 5261, enters the oxygen-enriched chamber 512 in the fixed component 51, reaches the oxygen-enriched air outlet 12 through the pipeline, and is ejected from the oxygen-enriched blower. It can be subsequently connected to specific combustion equipment to achieve higher temperature energy-saving combustion. In the chamber between adjacent centrifugal guide plates 523, nitrogen molecules with smaller molecular weights concentrate at the front ends of the centrifugal guide plates 523. They then flow out through nitrogen-enriched separation holes 5271 on the back plate 527 of the rotating component 52, pass through the nitrogen-enriched inlet elliptical hole, enter the nitrogen-enriched chamber 513, and then, through a pipeline, reach the nitrogen-enriched air outlet 13 before being ejected from the oxygen-enriched blower. To prevent mixing of the separated oxygen-enriched and nitrogen-enriched air, a gas isolation ring 511 is installed on the fixed component 51.

[0020] The overall advantages and practicality of this embodiment are: (1) through the principle of mechanical rotary separation, the oxygen concentration in the combustion aid is increased. (2) no additional consumables are introduced, which reduces the subsequent maintenance cost of the oxygen-enriched blower and reduces the failure rate of the oxygen-enriched blower. (3) by adjusting the speed of the motor 3, the oxygen content in the oxygen-enriched air can be adjusted to suit different applications. The above advantages and practicality are caused by: through mechanical rotary separation, centrifugal force is used to separate oxygen molecules and nitrogen molecules in the rotating part 52, thereby achieving the increase of the oxygen concentration in the combustion aid; no additional consumables are introduced, avoiding the use of consumables such as catalysts and membrane components, reducing the subsequent maintenance cost and failure rate; by adjusting the speed of the motor 3, the speed of the rotating part 52 can be changed, thereby affecting the separation effect of oxygen molecules and nitrogen molecules, and achieving the adjustment of the oxygen content in the oxygen-enriched air. Example

[0021] This embodiment differs from the previous embodiment in that flow stabilizers are added to the rotating component 52. These stabilizers are evenly distributed along the circumference, with a number ranging from 4 to 8. For example, 6 or 8 stabilizers can be used. The stabilizers stabilize the flow of fresh air within the internal chamber of the rotating component 52, reducing turbulence and thereby improving separation efficiency. Their structural features include being constructed of high-strength, corrosion-resistant metal in the form of curved plates, evenly distributed along the circumference, and fixedly connected to the central axis of the rotating component 52.

[0022] The implementation principle of this embodiment is: through the principle of mechanical rotation separation, combined with the effect of the flow stabilizer, the oxygen concentration in the combustion support is increased. The specific process is: fresh air enters the skid-mounted equipment through the fresh air inlet grille 11, the motor 3 drives the bearing 4 to rotate, and then drives the rotating component 52 in the oxygen-enriched blower body 5 to rotate, and the fresh air is sucked in through the fresh air inlet 521. The fresh air passes through the axial guide plate 522 and enters the internal chamber of the rotating component 52. Under the action of the flow stabilizer, the flow state of the fresh air is more stable, reducing turbulence. Under the action of centrifugal force, it flows along the centrifugal guide plate 523 to the outside of the rotating component 52 and stays in the chamber between adjacent centrifugal guide plates 523. After separation, oxygen molecules with larger relative molecular weights are concentrated at the end of the centrifugal guide plate 523, and pass through the separation hole boss 52411, through the oxygen-enriched separation hole 5241, into the chamber between the oxygen-enriched separation ring 524 and the secondary separation ring 526 for secondary separation. The further separated oxygen-enriched air leaves the rotating component 52 through the oxygen-enriched secondary separation hole 5261, enters the oxygen-enriched chamber 512 in the fixed component 51, reaches the oxygen-enriched air outlet 12 through a pipeline, and is ejected from the oxygen-enriched blower. It can then be connected to specific combustion equipment to achieve higher temperature energy-saving combustion. In the chamber between adjacent centrifugal guide plates 523, nitrogen molecules with smaller relative molecular weights are concentrated at the front end of the centrifugal guide plates 523, flow out through the nitrogen-enriched separation hole 5271 opened on the back plate 527 of the rotating component 52, enter the nitrogen-enriched chamber 513 through the nitrogen-enriched inlet elliptical hole, reach the nitrogen-enriched air outlet 13 through a pipeline, and are ejected from the oxygen-enriched blower. In order to prevent the separated oxygen-enriched air and nitrogen-enriched air from mixing, a gas isolation ring 511 is provided on the fixed component 51 .

[0023] The overall advantages and practicality of this embodiment are: through the principle of mechanical rotary separation, combined with the effect of the flow stabilizer, the oxygen concentration in the combustion aid is improved. No additional consumables are introduced, which reduces the subsequent maintenance cost of the oxygen-enriched blower and reduces the failure rate of the oxygen-enriched blower. By adjusting the speed of the motor 3, the oxygen content in the oxygen-enriched air can be adjusted to suit different applications. The above advantages and practicality are caused by: through mechanical rotary separation, centrifugal force is used to separate oxygen molecules and nitrogen molecules in the rotating part 52, and the effect of the flow stabilizer further improves the separation efficiency; no additional consumables are introduced, avoiding the use of consumables such as catalysts and membrane components, reducing subsequent maintenance costs and failure rates; by adjusting the speed of the motor 3, the speed of the rotating part 52 can be changed, thereby affecting the separation effect of oxygen molecules and nitrogen molecules, and achieving the adjustment of the oxygen content in the oxygen-enriched air. The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the scope of protection of the present application.

Claims

1. Oxygen-enriched blower, characterized in that: include: A skid-mounted housing (1) and an equipment base (2), a motor (3), a bearing (4) and an oxygen-enriched blower body (5) arranged in the skid-mounted housing (1); the oxygen-enriched blower body (55) comprises a fixed component (51) and a rotating component (52); the rotating component (52) is connected to the equipment base (2) via a bearing (4); the rotating component (52) comprises a back plate (527), a fresh air inlet (521), an axial guide plate (522), a centrifugal guide plate (523), an oxygen-enriched separation ring (524), a separation chamber support plate (525) and a secondary separation ring (526); the fixed component (51) comprises a gas isolation ring (511), an oxygen-enriched blower body (526) and a centrifugal guide plate (523); The centrifugal guide plate (523) is connected to an oxygen-enriched separation ring (524), and an oxygen-enriched separation hole (5241) is provided on the oxygen-enriched separation ring (524). The separation chamber support plate (525) connects the oxygen-enriched separation ring (524) and the secondary separation ring (526), and an oxygen-enriched secondary separation hole (5261) is provided on the secondary separation ring (526). The back plate (527) of the rotating component (52) is provided with a nitrogen-enriched separation hole (5271). A fresh air inlet grille (11), an oxygen-enriched air outlet (12) and a nitrogen-enriched air outlet (13) are arranged outside the skid-mounted housing (1).

2. The oxygen-enriched blower according to claim 1, characterized in that: The axial guide plates (522) are evenly arranged along the circumferential direction, with a guide angle of 15° to 45° and a number of 6 to 12.

3. The oxygen-enriched blower according to claim 1, characterized in that: The centrifugal guide plates (523) are evenly arranged along the circumference, with a guide angle of 25° to 90° and a number of 6 to 18.

4. The oxygen-enriched blower according to claim 1, characterized in that: The diameter of the oxygen-enriched separation holes (5241) is 8-20 mm, and the number thereof is 40-120.

5. The oxygen-enriched blower according to claim 1, characterized in that: The diameter of the oxygen-enriched secondary separation holes (5261) is 10-25 mm, and the number is 40-160.

6. The oxygen-enriched blower according to claim 1, characterized in that: A separation hole boss (52411) is provided at the oxygen-enriched separation hole (5241), and the height of the separation hole boss (52411) is 2-10 mm.

7. The oxygen-enriched blower according to claim 1, characterized in that: The nitrogen-rich separation holes (5271) are elliptical holes, the number of which is 6 to 20, the hole diameter of which is 20 to 50 mm, and the length of the straight section of which is 80 to 140 mm.

8. The oxygen-enriched blower according to claim 1, characterized in that: The oxygen-enriched chamber (512) and the nitrogen-enriched chamber (513) of the fixed component (51) are respectively communicated with the oxygen-enriched air outlet (12) and the nitrogen-enriched air outlet (13) through pipelines.

9. The oxygen-enriched blower according to claim 1, characterized in that: The fresh air inlet grille (11) is arranged outside the skid-mounted housing (1) and is used to introduce fresh air.

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