Centrifugal fan current collector for steel mill

Abstract

The invention relates to the technical field of centrifugal fans, and discloses a centrifugal fan collector for a steel mill, which comprises a collector plate, one side of the collector plate is fixedly connected with an arc-shaped plate, the inner side of the arc-shaped plate is fixedly connected with a guide plate, the collector plate is sleeved with a positioning sleeve, and the inner side of the positioning sleeve is fixedly connected with a vortex pipeline. According to the centrifugal fan current collector for the steel mill, the current collecting plates, the arc-shaped plates and the guide plates are arranged on the two sides of the blades, the guide plates are kept to be tightly attached to the outer portions of the blades, the spiral plates are arranged in the current collecting plates, and the spiral plates drive gas entering the current collecting plates to apply rotating force; and the rotating direction is kept the same as the rotating direction of the blades, so that the wind power flow collecting effect is further improved, namely the volume loss caused by the fact that air flows from a high-pressure area to a low-pressure area in the volute is reduced, the gas absorption efficiency is improved, the wind energy loss is reduced, and the resource utilization rate is improved.

Description

Technical Field

[0001] The invention relates to the technical field of centrifugal fans, and in particular to a centrifugal fan collector used in a steel plant. Background Art

[0002] A steel mill is a factory area used to produce steel. During the steel production process, high temperatures are generated, so a cooling device is needed to cool the steel during processing. At the same time, in order to quickly cool the steel, a centrifugal fan is used to drive the gas circulation. By increasing the gas circulation, the equipment can be cooled. At the same time, in order to improve the wind absorption effect, a collector is installed at the air inlet of the centrifugal fan. The collector can effectively drive the gas circulation direction to guide, thereby improving the air transmission efficiency.

[0003] In common steel mills, a conical plate is installed at the air inlet of the centrifuge for gas circulation. The conical structure of the conical plate can guide the air over a large range and collect the air. However, in the design of the conical plate, there is a gap between the collector and the impeller. The gap causes volume loss when the air flows from the high-pressure area to the low-pressure area, which in turn affects the air collection efficiency. During the rotation of the impeller, the impeller drives the air to rotate and transport. However, when the gas passes through the conical plate, the impeller needs to exert a rotational force on the passing air in order to drive the air to be transported, further increasing the loss of the impeller. For this reason, we propose a centrifugal fan collector for steel mills. Summary of the invention

[0004] In view of the shortcomings of the existing centrifugal fan collectors used in steel mills, the present invention provides a centrifugal fan collector for steel mills, which has an arc-shaped plate that is recessed inward between the collector plate and the guide plate, thereby driving the guide plate to fit tightly with the blades. At the same time, a spiral plate is arranged inside the collector plate. When other gases pass through the collector plate, the spiral plate automatically drives the passing gas to be spirally conveyed, and the conveyed gas maintains the same direction of rotation as the blades, thereby reducing the blade loss and solving the problems raised in the above-mentioned background technology.

[0005] The present invention provides the following technical solution: A centrifugal fan collector for a steel plant, comprising a collecting plate, one side of the collecting plate is fixedly connected to an arc plate, the inner side of the arc plate is fixedly connected to a guide plate, the outer side of the collecting plate is sleeved with a positioning sleeve, the inner side of the positioning sleeve is fixedly connected to a vortex duct, a rotating shaft is placed inside the collecting plate, the outer side of the positioning sleeve is fixedly connected to a connecting plate, the middle part of the connecting plate is sleeved with a bearing, and the inner side of the collecting plate is fixedly connected to a spiral plate.

[0006] Preferably, a blade is fixedly connected to the middle of the rotating shaft, and the blade is arranged between the two groups of guide plates, and the inner side of the guide plate is arc-shaped.

[0007] Preferably, the arc-shaped plate is arc-shaped, and the arc-shaped plate is recessed inwardly between the current collecting plate and the guide plate.

[0008] Preferably, the spiral plate is spiral-shaped, and the inner side of the spiral plate is in contact with the side surface of the arc-shaped plate.

[0009] Preferably, the positioning sleeves are sleeved on the outside of the current collecting plate and the guide plate, and a first mounting plate is provided at the upper ends of the two groups of positioning sleeves, and fastening bolts are installed inside the first mounting plate.

[0010] Preferably, the vortex duct is sleeved on the outside of the blade, a second mounting plate is installed between two groups of the vortex ducts, and fastening bolts are arranged inside the second mounting plate.

[0011] Preferably, an opening is provided at the lower end of the vortex duct, and the upper end of the vortex duct is circular and the lower end is conical.

[0012] Preferably, the bearing is sleeved on the outside of the rotating shaft, and the connecting plates are installed on both ends of the rotating shaft.

[0013] Preferably, a tapered sleeve is fixedly connected to the outside of the rotating shaft, the tapered sleeve is sleeved on the outside of the bearing, and the outside of the tapered sleeve is tapered.

[0014] Compared with the existing centrifugal fan collector used in steel mills, the present invention has the following beneficial effects:

[0015] 1. The centrifugal fan collector used in the steel plant is arranged on both sides of the blade through a collector plate, an arc plate and a guide plate, and the guide plate is kept in a close fit with the outside of the blade, and a spiral plate is arranged inside the collector plate. The spiral plate drives the gas entering the collector plate to exert a rotational force, and the rotation direction remains the same as the rotation direction of the blade, further improving the wind collection effect, that is, reducing the volume loss caused by the air flowing from the high-pressure area to the low-pressure area in the volute, thereby improving the gas absorption efficiency, reducing wind energy loss, and improving resource utilization.

[0016] 2. The centrifugal fan collector used in the steel plant has a positioning sleeve on the outside of the collector plate and the guide plate, which provides control of the vortex pipes to be mutually sleeved and limited, so that the position of the collector plate can be installed and limited, ensuring that the collector plate is installed on both sides of the blade, which improves convenience and stability.

[0017] 3. The centrifugal fan collector used in the steel plant is installed on the outside of the rotating shaft through a positioning sleeve to drive the bearing. The bearing reduces the friction resistance of the rotating shaft. At the same time, the bearing limits the activity trajectory of the rotating shaft to avoid vibration limitation when the rotating shaft rotates at high speed, thereby improving the stability of the equipment during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the cross-sectional structure of the main body of the present invention;

[0020] Figure 3 It is a partial enlarged structural schematic diagram of the current collecting device of the present invention;

[0021] Figure 4 It is a schematic diagram of the structure of the current collecting device of the present invention;

[0022] Figure 5 It is a side view structural schematic diagram of the present invention;

[0023] Figure 6 It is a schematic diagram of the enlarged structure of point A of the present invention.

[0024] In the figure: 1. collecting plate; 2. arc plate; 3. guide plate; 4. positioning sleeve; 5. vortex duct; 6. first mounting plate; 7. second mounting plate; 8. rotating shaft; 9. blades; 10. connecting plate; 11. bearing; 12. conical sleeve; 13. spiral plate. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6, a centrifugal fan collector for a steel plant, comprising a collecting plate 1, one side of the collecting plate 1 is fixedly connected with an arc plate 2, the inner side of the arc plate 2 is fixedly connected with a guide plate 3, the collecting plate 1, the arc plate 2 and the guide plate 3 are arc-shaped, which is convenient for gas drainage, and the guide plate 3 is kept in a fit with the outer side of the blade 9, and the problem of gas loss is caused during further transmission of the gap. The outer side of the collecting plate 1 is sleeved with a positioning sleeve 4, and the inner side of the positioning sleeve 4 is fixedly connected with a vortex pipe 5, the positioning sleeve 4 is limited to the outside of the collecting plate 1, and the positioning sleeve 4 drives the vortex pipe 5 to be sleeved on the outside of the blade 9. At this point, the guide plate 3 can be set on both sides of the blade 9, and a rotating shaft 8 is placed inside the collecting plate 1, and a connecting plate 10 is fixedly connected to the outside of the positioning sleeve 4, and a bearing 11 is sleeved in the middle of the connecting plate 10. The bearing 11 reduces the friction resistance of the rotating shaft 8 and ensures the stability of the rotating shaft 8 during rotation. The inner side of the collecting plate 1 is fixedly connected with a spiral plate 13.

[0027] See also Figure 3 A blade 9 is fixedly connected to the middle of the rotating shaft 8, and the blade 9 is arranged between the two groups of guide plates 3. At the same time, the inner side of the guide plate 3 is arc-shaped. The blade 9 is driven by the rotating shaft 8 to be arranged between the two groups of guide plates 3. During the rotation of the blade 9 driven by the rotating shaft 8, the gas is absorbed inwardly through the two groups of guide plates 3, and at the same time, the high-pressure gas is transported to the outside through the drainage of the blade 9, that is, the gas can be discharged downward through the vortex pipe 5.

[0028] See also Figure 3 The arc plate 2 is arc-shaped, and the arc plate 2 is recessed inward between the current collecting plate 1 and the guide plate 3. The arc plate 2 is arranged between the current collecting plate 1 and the guide plate 3, that is, the gas is absorbed by the guide plate 3, and the air is compressed by the arc plate 2. Since the arc plate 2 is arc-shaped, the gas can be quickly drained to reduce the volume loss caused by the air flowing from the high-pressure area to the low-pressure area. At the same time, the gas is transported to the inside of the positioning sleeve 4 through the guide plate 3, and the air is compressed and discharged inside the positioning sleeve 4.

[0029] See also Figure 4 The spiral plate 13 is spiral-shaped, and the inner side of the spiral plate 13 contacts the side of the arc plate 2. The spiral plate 13 is arranged inside the collecting plate 1, and the spiral plate 13 is spiral-shaped. At the same time, a spiral force is generated during the rotation of the blade 9, that is, when the gas is transported to the inside of the guide plate 3, it is in a rotating state. By installing the spiral plate 13 inside the collecting plate 1, the spiral plate 13 pre-adjusts the direction of the passing gas, that is, reduces the problem of wind energy loss when the gas passes through the collecting plate 1, increases the gas speed, and thus improves the wind energy utilization rate.

[0030] See also Figure 2The positioning sleeves 4 are sleeved on the outside of the current collecting plate 1 and the guide plate 3. At the same time, a first mounting plate 6 is provided on the upper ends of the two groups of positioning sleeves 4. A fastening bolt is installed inside the first mounting plate 6. The positioning sleeves 4 are sleeved on the outside of the current collecting plate 1 and the guide plate 3. The two groups of positioning sleeves 4 are sleeved on the outside of the current collecting plate 1. The fastening bolts are installed inside the first mounting plate 6. The fastening bolts are used to splice and limit the positions between the two groups of positioning sleeves 4, that is, the positioning sleeves 4 can be limited to the outside of the current collecting plate 1. When the current collecting plate 1 is installed at the position, the convenience of positioning and installing the current collecting plate 1 is improved.

[0031] See also Figure 2 The vortex duct 5 is sleeved on the outside of the blade 9, and a second mounting plate 7 is installed between the two groups of vortex ducts 5. The second mounting plate 7 is provided with fastening bolts inside. The vortex duct 5 is sleeved on the outside of the blade 9. At the same time, fastening bolts are installed on the outside of the second mounting plate 7. The fastening bolts drive the positions of the two groups of vortex ducts 5 to be spliced ​​and limited, and the vortex duct 5 drives the spacing between the two groups of collecting plates 1 to be limited, thereby improving the convenience of positioning the positions of the two groups of collecting plates 1.

[0032] See also Figure 2 An opening is provided at the lower end of the vortex duct 5, the upper end of the vortex duct 5 is circular, and the lower end is conical. The gas flow trajectory is limited by the vortex duct 5, and when the blades 9 rotate at high speed, when the gas is transported to the inside of the blades 9, the blades 9 drive the gas to be compressed, and the compressed gas is discharged to the outside through the lower part of the vortex duct 5, and the lower end of the vortex duct 5 is conical, thereby improving the compression effect of the gas.

[0033] See also Figure 6 The bearing 11 is sleeved on the outside of the rotating shaft 8, and the connecting plate 10 is installed at both ends of the rotating shaft 8. The connecting plate 10 is installed on one side of the positioning sleeve 4. When the positioning sleeve 4 is sleeved on the outside of the collecting plate 1, the positioning sleeve 4 drives the connecting plate 10 to tighten inward. At the same time, the connecting plate 10 drives the bearing 11 to be limited to the outside of the rotating shaft 8, that is, to ensure that the position of the rotating shaft 8 inside the collecting plate 1 remains stable, to avoid the position limit deviation of the blade 9 when the rotating shaft 8 rotates at a high speed, and the position deviation of the blade 9 causes contact with the collecting plate 1, thereby causing damage to the equipment. At the same time, the bearing 11 reduces the friction resistance of the rotating shaft 8 during rotation, improves the high-speed rotation efficiency of the rotating shaft 8, and then runs efficiently and stably.

[0034] See also Figure 1The outside of the rotating shaft 8 is fixedly connected with a tapered sleeve 12, and the tapered sleeve 12 is sleeved on the outside of the bearing 11. At the same time, the outside of the tapered sleeve 12 is tapered. The tapered sleeve 12 is fixedly connected with the outside of the rotating shaft 8, and the tapered sleeve 12 is arranged on the outside of the bearing 11. When the gas is transported inward through the collecting plate 1, it is prevented from contacting the bearing 11, resulting in obstruction of the air circulation on the side of the bearing 11. The outside of the tapered sleeve 12 is tapered, and the gas can be diverted when passing through, reducing the problem of obstruction during gas transmission.

[0035] Working principle: When in use, the positioning sleeve 4 is sleeved on the outside of the collecting plate 1 and the guide plate 3, and the two groups of vortex ducts 5 are installed from both sides of the blade 9. The blade 9 is controlled to be set between the two groups of guide plates 3. At the same time, the first mounting plate 6 and the second mounting plate 7 are tightened, so that the positioning sleeve 4 and the vortex duct 5 can be controlled to be limited to the outside of the blade 9, thereby improving the stability of the guide plate 3 when positioning, and the guide plate 3 is installed on the outside of the blade 9 to reduce the volume loss caused by the air flowing from the high-pressure area to the low-pressure area in the volute. At the same time, when the positioning sleeve 4 is installed, the positioning sleeve 4 drives the bearing 11 to fit on the outside of the rotating shaft 8, and The conical sleeve 12 is sleeved on the outside of the bearing 11 to simultaneously increase the gas circulation speed and start the rotating shaft 8 at the same time. The rotating shaft 8 drives the blades 9 to rotate, and the gas is transported to the middle through the collecting plate 1. At the same time, the collecting plate 1, the arc plate 2 and the guide plate 3 are arc-shaped, that is, the gas can be concentrated and attracted inward to improve the gas absorption efficiency. In addition, a spiral plate 13 is provided on the outside of the collecting plate 1. The spiral plate 13 drives the gas spiral transport to ensure that when the gas is transmitted to the inside of the collecting plate 1, the gas transport is synchronized with the rotation of the blades 9. At the same time, the gas is transported to the inside of the vortex pipe 5, and the gas is compressed and discharged inside the vortex pipe 5.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A centrifugal fan collector for a steel plant, comprising a collector plate (1), characterized in that: A curved plate (2) is fixedly connected to one side of the current collecting plate (1), a guide plate (3) is fixedly connected to the inner side of the curved plate (2), a positioning sleeve (4) is sleeved on the outer side of the current collecting plate (1), a vortex duct (5) is fixedly connected to the inner side of the positioning sleeve (4), a rotating shaft (8) is placed inside the current collecting plate (1), a connecting plate (10) is fixedly connected to the outer side of the positioning sleeve (4), a bearing (11) is sleeved in the middle of the connecting plate (10), and a spiral plate (13) is fixedly connected to the inner side of the current collecting plate (1).

2. A centrifugal fan collector for a steel plant according to claim 1, characterized in that: A blade (9) is fixedly connected to the middle of the rotating shaft (8), and the blade (9) is arranged between two groups of guide plates (3), and the inner side of the guide plate (3) is arc-shaped.

3. The centrifugal fan collector for a steel plant according to claim 1, characterized in that: The arc-shaped plate (2) is arc-shaped, and the arc-shaped plate (2) is recessed inwardly between the current collecting plate (1) and the guide plate (3).

4. The centrifugal fan collector for a steel plant according to claim 1, characterized in that: The spiral plate (13) is spiral-shaped, and the inner side of the spiral plate (13) is in contact with the side surface of the arc-shaped plate (2).

5. The centrifugal fan collector for a steel plant according to claim 1, characterized in that: The positioning sleeves (4) are sleeved on the outside of the current collecting plate (1) and the guide plate (3), and a first mounting plate (6) is provided at the upper ends of the two groups of positioning sleeves (4), and a fastening bolt is installed inside the first mounting plate (6).

6. The centrifugal fan collector for a steel plant according to claim 1, characterized in that: The vortex duct (5) is sleeved on the outside of the blade (9), a second mounting plate (7) is installed between two groups of the vortex ducts (5), and fastening bolts are arranged inside the second mounting plate (7).

7. The centrifugal fan collector for a steel plant according to claim 1, characterized in that: The lower end of the vortex duct (5) is provided with an opening, the upper end of the vortex duct (5) is circular, and the lower end is conical.

8. The centrifugal fan collector for a steel plant according to claim 1, characterized in that: The bearing (11) is sleeved on the outside of the rotating shaft (8), and the connecting plate (10) is installed on both ends of the rotating shaft (8).

9. The centrifugal fan collector for a steel plant according to claim 1, characterized in that: The outside of the rotating shaft (8) is fixedly connected with a tapered sleeve (12), and the tapered sleeve (12) is sleeved on the outside of the bearing (11), and the outside of the tapered sleeve (12) is tapered.

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