Energy-saving type controllable vortex ventilator with double-layer sealing structure

Abstract

The utility model discloses an energy-saving type controllable vortex ventilator with a double-layer sealing structure, which comprises a current collector, an inlet section fixedly connected with an inlet of the current collector, a first sealing layer fixedly connected with an outlet of the current collector, an impeller fixedly connected with the other end of the first sealing layer, and a volute fixedly connected in the volute. And a second sealing layer is arranged at a gap between the impeller and the volute for sealing. According to the energy-saving type controllable vortex ventilator with the double-layer sealing structure, the problem that the efficiency of the controllable vortex ventilator is reduced due to leakage caused by untight sealing of an existing sealing device is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy-saving and emission-reduction equipment, and particularly relates to an energy-saving controllable-vortex ventilator with a double-layer sealing structure. Background Art

[0002] Controllable-vortex ventilators are widely used in many important industries such as the mining, cement, and electrolytic aluminum industries. Affected by processing technology conditions and on-site production environments during actual production and operation, controllable-vortex ventilators often operate under variable working conditions, resulting in low actual operating efficiency and significantly increased energy consumption of the controllable-vortex ventilators. Improving the operating efficiency of controllable-vortex ventilators can reduce the system energy consumption of the industry and plays an important role in the further development of industrial energy conservation and emission reduction.

[0003] The sealing device is an important component of the ventilator and is usually applied inside the volute of the ventilator. Gas flows through the impeller and the volute from the collector, and some gas will leak inside the volute. The leaked gas will cause relatively large leakage losses, further resulting in a reduction in the efficiency of the controllable-vortex ventilator. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an energy-saving controllable-vortex ventilator with a double-layer sealing structure, which solves the problem that the existing sealing device has poor sealing and leakage, resulting in a reduction in the efficiency of the controllable-vortex ventilator.

[0005] The technical solution adopted by the utility model is that the energy-saving controllable-vortex ventilator with a double-layer sealing structure includes a collector, an inlet section is fixedly connected to the inlet of the collector, a first sealing layer is fixedly connected to the outlet of the collector, the other end of the first sealing layer is fixedly connected to an impeller, and further includes a volute. The impeller is fixedly connected inside the volute, and a second sealing layer is provided for sealing at the gap between the impeller and the volute.

[0006] The characteristics of the utility model further lie in:

[0007] The impeller includes an impeller front disc and an impeller rear disc. The first sealing layer is annular. One end interface of the first sealing layer is fixedly connected to the collector, and the other end interface of the first sealing layer is fixedly connected to the impeller front disc. Blade units are fixedly connected between the impeller front disc and the impeller rear disc. A rotating shaft is fixedly connected to the center of the blade units between the impeller front disc and the impeller rear disc. The second sealing layer is provided at the gap between the volute and the impeller front disc.

[0008] The second sealing layer is a strip-shaped annulus. One side surface of the second sealing layer is fixedly connected to the impeller front disc, and the other side surface of the second sealing layer is fixedly connected to the annular inner wall of the volute. The second sealing layer is used for cross-sealing between the impeller front disc and the annular inner wall of the volute.

[0009] The blade units include a plurality of blades. The plurality of blades are circumferentially distributed along the rotating shaft, and the planes where the plurality of blades are located are all parallel to the rotating shaft.

[0010] The volute includes a volute front disc and a volute rear disc. The second sealing layer is fixedly connected to the volute front disc, and the impeller rear disc is fixedly connected to the volute rear disc.

[0011] The rotating shaft penetrates through the collector and the volute rear disc, and the rotating shaft is rotatably connected to the collector and the volute rear disc.

[0012] The beneficial effects of the present utility model are as follows:

[0013] The energy-saving controllable vortex ventilator with a double-layer sealing structure provided by the present utility model solves the problem that the operating efficiency of the controllable vortex ventilator is reduced due to excessive leakage of some gases by arranging a first sealing layer and a second sealing layer inside the controllable vortex ventilator. Since the double-layer sealing inside the controllable vortex ventilator reduces the leakage loss, the volumetric efficiency is improved, and the purpose of improving the overall operating efficiency of the controllable vortex ventilator is achieved. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the energy-saving controllable vortex ventilator with a double-layer sealing structure of the present utility model;

[0015] Figure 2 is a schematic cross-sectional view of the energy-saving controllable vortex ventilator with a double-layer sealing structure of the present utility model;

[0016] Figure 3 is a graph of the efficiency of the double-layer sealing controllable vortex ventilator and the controllable vortex ventilator of the present utility model.

[0017] In the figure, 1. inlet section, 2. collector, 3. first sealing layer, 4. volute front disc, 5. second sealing layer, 6. volute, 7. volute rear disc, 8. impeller front disc, 9. impeller, 10. impeller rear disc; 11. rotating shaft; 12. blade. Detailed Embodiments

[0018] The present utility model will be described in detail below with reference to the drawings and specific embodiments.

[0019] The energy-saving controllable vortex ventilator with a double-layer sealing structure provided by the present utility model, as Figure 1 shown, includes a collector 2, and an inlet section 1 is fixedly connected to the inlet of the collector 2, as Figure 2As shown in the figure, a first sealing layer 3 is fixedly connected to the outlet of the collector 2, and the other end of the first sealing layer 3 is fixedly connected to the impeller 9. A volute 6 is also included. The impeller 9 is fixedly connected inside the volute 6, and a second sealing layer 5 is provided at the gap between the impeller 9 and the volute 6 for sealing. The impeller 9 includes an impeller front disc 8 and an impeller rear disc 10. The first sealing layer 3 is annular. One end interface of the first sealing layer 3 is fixedly connected to the collector 2, and the other end interface of the first sealing layer 3 is fixedly connected to the impeller front disc 8. Blade units are fixedly connected between the impeller front disc 8 and the impeller rear disc 10. A rotating shaft 11 is fixedly connected to the center of the blade units between the impeller front disc 8 and the impeller rear disc 10. The second sealing layer 5 is provided at the gap between the volute 6 and the impeller front disc 8. The second sealing layer 5 is strip-shaped and annular. One side of the second sealing layer 5 is fixedly connected to the impeller front disc 8, and the other side of the second sealing layer 5 is fixedly connected to the annular inner wall of the volute 6. The second sealing layer 5 is used for cross-sealing between the impeller front disc 8 and the annular inner wall of the volute 6. The blade units include a number of blades 12. The number of blades 12 is circumferentially distributed along the rotating shaft 11, and the planes where the number of blades 12 are located are all parallel to the rotating shaft 11. The volute 6 includes a volute front disc 4 and a volute rear disc 7. The second sealing layer 5 is fixedly connected to the volute front disc 4, and the impeller rear disc 10 is fixedly connected to the volute rear disc 7. The rotating shaft 11 penetrates through the collector 2 and the volute rear disc 7, and the rotating shaft 11 is rotatably connected to the collector 2 and the volute rear disc 7. As Figure 3 shown, compared with a controllable-vortex ventilator, the efficiency of the double-sealed controllable-vortex ventilator of the present utility model has been significantly improved, and the efficiency under the design flow condition has been increased by 1.5%.

[0020] Example 1

[0021] The energy-saving controllable-vortex ventilator with a double-sealed structure proposed in this example, as Figure 1 shown, includes a collector 2, and an inlet section 1 is fixedly connected to the inlet of the collector 2. As Figure 2 shown, a first sealing layer 3 is fixedly connected to the outlet of the collector 2, and the other end of the first sealing layer 3 is fixedly connected to the impeller 9. A volute 6 is also included. The impeller 9 is fixedly connected inside the volute 6, and a second sealing layer 5 is provided at the gap between the impeller 9 and the volute 6 for sealing.

[0022] Example 2

[0023] The energy-saving controllable-vortex ventilator with a double-sealed structure proposed in this example, as Figure 1 shown, includes a collector 2, and an inlet section 1 is fixedly connected to the inlet of the collector 2. As Figure 2As shown in the figure, a first sealing layer 3 is fixedly connected to the outlet of the collector 2, and the other end of the first sealing layer 3 is fixedly connected to the impeller 9. A volute 6 is also included. The impeller 9 is fixedly connected inside the volute 6, and a second sealing layer 5 is provided at the gap between the impeller 9 and the volute 6 for sealing. The impeller 9 includes an impeller front disc 8 and an impeller rear disc 10. The first sealing layer 3 is annular. One end interface of the first sealing layer 3 is fixedly connected to the collector 2, and the other end interface of the first sealing layer 3 is fixedly connected to the impeller front disc 8. Blade units are fixedly connected between the impeller front disc 8 and the impeller rear disc 10. A rotating shaft 11 is fixedly connected to the center of the blade units between the impeller front disc 8 and the impeller rear disc 10. The second sealing layer 5 is provided at the gap between the volute 6 and the impeller front disc 8.

[0024] Example 3

[0025] The energy-saving controllable vortex ventilator with a double-layer sealing structure proposed in this embodiment is as Figure 1 shown, and includes a collector 2. An inlet section 1 is fixedly connected to the inlet of the collector 2. As Figure 2 shown, a first sealing layer 3 is fixedly connected to the outlet of the collector 2, and the other end of the first sealing layer 3 is fixedly connected to the impeller 9. A volute 6 is also included. The impeller 9 is fixedly connected inside the volute 6, and a second sealing layer 5 is provided at the gap between the impeller 9 and the volute 6 for sealing. The impeller 9 includes an impeller front disc 8 and an impeller rear disc 10. The first sealing layer 3 is annular. One end interface of the first sealing layer 3 is fixedly connected to the collector 2, and the other end interface of the first sealing layer 3 is fixedly connected to the impeller front disc 8. Blade units are fixedly connected between the impeller front disc 8 and the impeller rear disc 10. A rotating shaft 11 is fixedly connected to the center of the blade units between the impeller front disc 8 and the impeller rear disc 10. The second sealing layer 5 is provided at the gap between the volute 6 and the impeller front disc 8. The second sealing layer 5 is strip-shaped and annular. One side of the second sealing layer 5 is fixedly connected to the impeller front disc 8, and the other side of the second sealing layer 5 is fixedly connected to the annular inner wall of the volute 6. The second sealing layer 5 is used for cross-sealing between the impeller front disc 8 and the annular inner wall of the volute 6. The blade units include a number of blades 12. The number of blades 12 is circumferentially distributed along the rotating shaft 11, and the planes where the number of blades 12 are located are all parallel to the rotating shaft 11.

[0026] Example 4

[0027] The energy-saving controllable vortex ventilator with a double-layer sealing structure proposed in this embodiment is as Figure 1 shown, and includes a collector 2. An inlet section 1 is fixedly connected to the inlet of the collector 2. As Figure 2As shown in the figure, a first sealing layer 3 is fixedly connected to the outlet of the collector 2, and the other end of the first sealing layer 3 is fixedly connected to the impeller 9. It further includes a volute 6. The impeller 9 is fixedly connected inside the volute 6. A second sealing layer 5 is provided for sealing at the gap between the impeller 9 and the volute 6; the impeller 9 includes an impeller front disc 8 and an impeller rear disc 10. The first sealing layer 3 is annular. One end interface of the first sealing layer 3 is fixedly connected to the collector 2, and the other end interface of the first sealing layer 3 is fixedly connected to the impeller front disc 8. A blade unit is fixedly connected between the impeller front disc 8 and the impeller rear disc 10. A rotating shaft 11 is fixedly connected to the center of the blade unit between the impeller front disc 8 and the impeller rear disc 10. The second sealing layer 5 is provided at the gap between the volute 6 and the impeller front disc 8; the second sealing layer 5 is a strip-shaped ring. One side surface of the second sealing layer 5 is fixedly connected to the impeller front disc 8, and the other side surface of the second sealing layer 5 is fixedly connected to the inner wall of the volute 6. The second sealing layer 5 is used for cross-sealing between the impeller front disc 8 and the inner wall of the volute 6; the blade unit includes a plurality of blades 12. The plurality of blades 12 are circumferentially distributed along the rotating shaft 11, and the planes where the plurality of blades 12 are located are all parallel to the rotating shaft 11; the volute 6 includes a volute front disc 4 and a volute rear disc 7. The second sealing layer 5 is fixedly connected to the volute front disc 4, and the impeller rear disc 10 is fixedly connected to the volute rear disc 7; the rotating shaft 11 penetrates through the collector 2 and the volute rear disc 7, and the rotating shaft 11 is rotatably connected to the collector 2 and the volute rear disc 7. The double-layer seal of the present utility model can improve the overall operating efficiency of the controllable vortex ventilator, and the efficiency improvement is more obvious under the design flow condition. By adding a double-layer seal inside the controllable vortex ventilator, the leakage amount of some gas from the collector into the volute interior of the controllable vortex ventilator is reduced. Since the double-layer seal reduces the leakage loss, the volumetric efficiency is further improved, achieving the purpose of improving the overall operating efficiency of the controllable vortex ventilator.

Claims

1. An energy-saving controllable vortex fan with a double-layer sealing structure, characterized in that: The invention comprises a collector (2), wherein the inlet of the collector (2) is fixedly connected to an inlet section (1), the outlet of the collector (2) is fixedly connected to a first sealing layer (3), the other end of the first sealing layer (3) is fixedly connected to an impeller (9), and further comprises a volute (6), wherein the impeller (9) is fixedly connected inside the volute (6), and a second sealing layer (5) is provided at the gap between the impeller (9) and the volute (6) for sealing.

2. The energy-saving controllable vortex fan with a double-layer sealing structure according to claim 1 is characterized in that: The impeller (9) comprises an impeller front disk (8) and an impeller rear disk (10); the first sealing layer (3) is in an annular shape; one end interface of the first sealing layer (3) is fixedly connected to the collector (2); the other end interface of the first sealing layer (3) is fixedly connected to the impeller front disk (8); a blade unit is fixedly connected between the impeller front disk (8) and the impeller rear disk (10); a rotating shaft (11) is fixedly connected between the impeller front disk (8) and the impeller rear disk (10) at the center of the blade unit; and the second sealing layer (5) is arranged at the gap between the volute (6) and the impeller front disk (8).

3. The energy-saving controllable vortex fan with a double-layer sealing structure according to claim 2 is characterized in that: The second sealing layer (5) is in the shape of a strip ring, one side of the second sealing layer (5) is fixedly connected to the impeller front disk (8), and the other side of the second sealing layer (5) is fixedly connected to the annular inner wall of the volute (6), and the second sealing layer (5) is used for cross-sealing between the impeller front disk (8) and the annular inner wall of the volute (6).

4. The energy-saving controllable vortex fan with a double-layer sealing structure according to claim 3 is characterized in that: The blade unit comprises a plurality of blades (12), wherein the plurality of blades (12) are distributed in a circumferential manner along the rotation axis (11), and the planes on which the plurality of blades (12) are located are all parallel to the rotation axis (11).

5. The energy-saving controllable vortex fan with a double-layer sealing structure according to claim 4 is characterized in that: The volute (6) comprises a volute front disc (4) and a volute rear disc (7), the second sealing layer (5) is fixedly connected to the volute front disc (4), and the impeller rear disc (10) is fixedly connected to the volute rear disc (7).

6. The energy-saving controllable vortex fan with a double-layer sealing structure according to claim 5, characterized in that: The rotating shaft (11) passes through the collector (2) and the volute rear disc (7), and the rotating shaft (11) is rotationally connected to the collector (2) and the volute rear disc (7).

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