Double-ring type current collector for electrolytic aluminum smoke exhaust fan

Abstract

The double-ring type current collector comprises an outer current collector body and an inner current collector body, the inner current collector body is arranged in the outer current collector body, interval channels are formed between the outer side of the inner current collector body and the inner side of the outer current collector body, outer flow guide blades are evenly arranged in the front edge of the outer current collector body, and the outer flow guide blades are evenly arranged in the front edge of the outer current collector body. Inner guide vanes are evenly arranged inside the front edge of the inner current collector, and the outer current collector is fixedly connected with the inner current collector through outer guide vanes. According to the double-layer flow collector, the outer guide vane and the inner guide vane, airflow can be evened to a greater extent, flowing separation of the airflow in the flow collector is controlled, the circulation area is effectively increased, inflow distortion of the flow collector is avoided, and the efficiency of a fan is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fan collectors, in particular to a double-ring collector for an electrolytic aluminum exhaust fan. Background Art

[0002] In recent years, due to the huge power consumption of China's electrolytic aluminum industry, stepped electricity prices have been formulated for the electrolytic aluminum industry in various places, further increasing the industry cost. However, it is very difficult to make a breakthrough in the energy conservation of the electrolytic aluminum process itself in a short time. In the electrolytic aluminum industry, the smoke exhaust purification system is a very important link. Therefore, starting from the smoke exhaust purification system, through research and analysis and on-site testing, it is found that the system has serious problems such as severe backflow and low operating efficiency of the exhaust fan, and there is great potential for energy conservation.

[0003] As the core component of a ventilator, the collector is located at the inlet of the fan, and its main function is to make the gas flowing into the impeller more evenly from the inlet of the centrifugal ventilator. The geometric shape of the collector and its relative position to the impeller further determine the uniformity of the gas, and also affect the performance of the ventilator. When the F-type air inlet is adopted for the centrifugal ventilator, inflow distortion will occur, which has a greater impact on the performance of the centrifugal ventilator and reduces the peak efficiency of the fan.

[0004] At present, a kind of efficiency-enhancing axial-flow fan collector with the publication number of (CN214742354U) includes a collector main body. The collector main body is installed outside the guide vane, the guide vane is fixed on the guide vane hub, and a diffuser section is provided on the collector main body. The diffuser section extends from the air inlet end to the air outlet end of the collector main body, and an efficiency-enhancing device is provided inside the diffuser section. The efficiency-enhancing device includes a plurality of circular efficiency-enhancing rings. A plurality of efficiency-enhancing ring circles are arranged in sequence along the air inlet direction of the collector. The center of each efficiency-enhancing ring falls on the central axis of the guide vane hub. Each efficiency-enhancing ring is composed of a plurality of convex points, and the height of the convex points on each efficiency-enhancing ring decreases in sequence along the air inlet direction of the collector. Although this collector can further improve the efficiency of the fan, it cannot effectively solve the problem of inflow distortion at the air inlet of the collector, and thus cannot further improve the efficiency of the fan. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the deficiencies existing in the prior art, and a double-ring collector for an electrolytic aluminum exhaust fan is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A double-ring type collector for an electrolytic aluminum exhaust fan, comprising an outer collector and an inner collector. The inner collector is arranged inside the outer collector. A spaced channel is formed between the outer side of the inner collector and the inner side of the outer collector. Outer guide vanes are uniformly arranged inside the front edge of the outer collector, and inner guide vanes are uniformly arranged inside the front edge of the inner collector. The outer collector is fixedly connected to the inner collector through the outer guide vanes.

[0008] The front ends of the outer collector and the inner collector are spaced apart. The front end of the inner collector is arranged inside the outer collector, and the rear ends of the outer collector and the inner collector are flush.

[0009] The size ratio of the outer collector to the inner collector is 3:2.

[0010] Both the outer collector and the inner collector are conical arc collectors or conical collectors.

[0011] Both the outer guide vanes and the inner guide vanes are swirl vanes. There are 8 - 12 outer guide vanes and 12 - 20 inner guide vanes.

[0012] The arrangement directions of the outer guide vanes and the inner guide vanes are the same, and the flow guiding directions are the same.

[0013] The rear ends of the outer collector and the inner collector are installed at the air inlet of the volute of the fan.

[0014] The beneficial effects of the present utility model are as follows: The double-layer collector, the outer guide vanes and the inner guide vanes can make the air flow more uniform to a greater extent, control the flow separation of the air flow inside the collector, effectively increase the flow area, avoid the inflow distortion of the collector, further improve the fan efficiency, and thus reduce the operation cost of the electrolytic aluminum exhaust purification system and increase the economic benefits. Description of the Drawings

[0015] Figure 1 It is the front view of the present utility model;

[0016] Figure 2 It is the side sectional structure diagram of the present utility model;

[0017] In the figure: 1. Outer collector; 2. Inner collector; 3. Outer guide vane; 4. Inner guide vane. Detailed Embodiment

[0018] Embodiment 1

[0019] The utility model provides a double-ring type air collector for an electrolytic aluminum exhaust fan, and its structure is as follows: it includes an outer air collector 1 and an inner air collector 2. The inner air collector 2 is arranged inside the outer air collector 1. A spaced channel is formed between the outer side of the inner air collector 2 and the inner side of the outer air collector 1. Outer guide vanes 3 are evenly arranged inside the front edge of the outer air collector 1, and inner guide vanes 4 are evenly arranged inside the front edge of the inner air collector 2. The outer air collector 1 is fixedly connected to the inner air collector 2 through the outer guide vanes 3. The distance between the front ends of the outer air collector 1 and the inner air collector 2 is set to be 3 cm. The front end of the inner air collector 2 is arranged inside the outer air collector 1, and the rear ends of the outer air collector 1 and the inner air collector 2 are flush. Both the outer air collector 1 and the inner air collector 2 are conical arc-shaped air collectors. The size ratio of the outer air collector 1 to the inner air collector 2 is 3:2. Both the outer guide vanes 3 and the inner guide vanes 4 are swirl vanes. There are 8 outer guide vanes 3 and 12 outer guide vanes 3. The arrangement directions of the outer guide vanes 3 and the inner guide vanes 4 are the same, and the air guiding directions are the same.

[0020] Specifically, the rear ends of the outer air collector 1 and the inner air collector 2 are installed at the air inlet of the volute of the fan.

[0021] Embodiment 2

[0022] As Figure 1-2 shown, the utility model provides a double-ring type air collector for an electrolytic aluminum exhaust fan, and its structure is as follows: it includes an outer air collector 1 and an inner air collector 2. The inner air collector 2 is arranged inside the outer air collector 1. A spaced channel is formed between the outer side of the inner air collector 2 and the inner side of the outer air collector 1. Outer guide vanes 3 are evenly arranged inside the front edge of the outer air collector 1, and inner guide vanes 4 are evenly arranged inside the front edge of the inner air collector 2. The outer air collector 1 is fixedly connected to the inner air collector 2 through the outer guide vanes 3. The distance between the front ends of the outer air collector 1 and the inner air collector 2 is set to be 3 cm. The front end of the inner air collector 2 is arranged inside the outer air collector 1, and the rear ends of the outer air collector 1 and the inner air collector 2 are flush. Both the outer air collector 1 and the inner air collector 2 are conical arc-shaped air collectors. The size ratio of the outer air collector 1 to the inner air collector 2 is 3:2. Both the outer guide vanes 3 and the inner guide vanes 4 are swirl vanes. There are 10 outer guide vanes 3 and 15 outer guide vanes 3. The arrangement directions of the outer guide vanes 3 and the inner guide vanes 4 are the same, and the air guiding directions are the same.

[0023] Specifically, the rear ends of the outer air collector 1 and the inner air collector 2 are installed at the air inlet of the volute of the fan.

[0024] Embodiment 3

[0025] The utility model provides a double-ring type air collector for an electrolytic aluminum exhaust fan, and its structure is as follows: it includes an outer air collector 1 and an inner air collector 2. The inner air collector 2 is arranged inside the outer air collector 1. A spaced channel is formed between the outer side of the inner air collector 2 and the inner side of the outer air collector 1. Outer guide vanes 3 are uniformly arranged inside the front edge of the outer air collector 1, and inner guide vanes 4 are uniformly arranged inside the front edge of the inner air collector 2. The outer air collector 1 is fixedly connected to the inner air collector 2 through the outer guide vanes 3. The distance between the front ends of the outer air collector 1 and the inner air collector 2 is set at 3 cm. The front end of the inner air collector 2 is arranged inside the outer air collector 1, and the rear ends of the outer air collector 1 and the inner air collector 2 are flush. Both the outer air collector 1 and the inner air collector 2 are conical air collectors. The size ratio of the outer air collector 1 to the inner air collector 2 is 3:2. Both the outer guide vanes 3 and the inner guide vanes 4 are swirl vanes. There are 12 outer guide vanes 3 and 20 outer guide vanes 3. The arrangement directions of the outer guide vanes 3 and the inner guide vanes 4 are the same, and the air guiding directions are the same.

[0026] Specifically, the rear ends of the outer air collector 1 and the inner air collector 2 are installed at the air inlet of the volute of the fan, which is used for the fan of the electrolytic aluminum exhaust gas purification system.

Claims

1. A double-ring collector for an electrolytic aluminum exhaust fan, characterized in that: It includes an outer current collector and an inner current collector, wherein the inner current collector is arranged inside the outer current collector, the outer side of the inner current collector and the inner side of the outer current collector form a spacing channel, the front edge of the outer current collector is evenly provided with outer guide blades, the front edge of the inner current collector is evenly provided with inner guide blades, and the outer current collector is fixedly connected to the inner current collector through the outer guide blades.

2. A double-ring collector for an electrolytic aluminum fume exhaust fan according to claim 1, characterized in that: The front end of the outer current collector is spaced apart from the front end of the inner current collector, the front end of the inner current collector is arranged inside the outer current collector, and the rear ends of the outer current collector and the inner current collector are flush.

3. The double-ring collector for an electrolytic aluminum fume exhaust fan according to claim 1, characterized in that: The size ratio of the outer current collector to the inner current collector is 3:

2.

4. The double-ring collector for an electrolytic aluminum fume exhaust fan according to claim 1, characterized in that: The outer current collector and the inner current collector are both conical arc current collectors or conical current collectors.

5. The double-ring collector for an electrolytic aluminum fume exhaust fan according to claim 1, characterized in that: The outer guide blades and the inner guide blades are both swirl blades.

6. The double-ring collector for an electrolytic aluminum fume exhaust fan according to claim 1, characterized in that: The number of the outer guide blades is 8-12, and the number of the inner guide blades is 12-20.

7. The double-ring collector for an electrolytic aluminum fume exhaust fan according to claim 1, characterized in that: The outer guide blades and the inner guide blades are arranged in the same direction.

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