Centrifugal fan structure

Abstract

The utility model discloses a centrifugal fan structure which comprises a fan base, the top of the fan base is provided with a fan shell and a transmission device connecting seat, the outer side of the fan shell is provided with a fan front cover, the transmission device connecting seat is provided with a transmission device, the transmission device is provided with a transmission shaft, and the transmission shaft is provided with a motor. The transmission shaft is sequentially sleeved with heat dissipation blades, a fan rear cover and a fan impeller in the direction facing the fan shell. According to the centrifugal fan structure, when a high-temperature fan is maintained, the fan and a pipeline are not detached, the transmission device, the fan rear cover and the fan impeller are directly detached from the rear side of the fan, so that maintenance of the whole fan is completed, after maintenance is completed, the fan is installed back in a reverse sequence, the maintenance efficiency is improved, the installation process is simplified, and the maintenance cost is reduced. The problems that in the prior art, the maintenance efficiency is very low, and maintenance is very inconvenient are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sludge carbonization treatment, in particular to a centrifugal fan structure. Background Art

[0002] A centrifugal fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is a driven fluid machine. Centrifugal fans are widely used in ventilation, dust removal and cooling in factories, mines, tunnels, cooling towers, vehicles, ships and buildings.

[0003] In the field of sludge carbonization treatment, the high-temperature hot flue gas after carbonization treatment needs to be introduced into the drying furnace to recover the waste heat. The high-temperature fan in the existing technology is tightly connected to the pipeline. During maintenance, the high-temperature fan needs to be dismantled as a whole before maintenance can be carried out. The maintenance efficiency is very low and it is very inconvenient to maintain. Utility Model Content

[0004] The utility model aims to provide a centrifugal fan structure to solve the problems of very low maintenance efficiency and inconvenient maintenance in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a centrifugal fan structure, including a fan base, a fan casing and a transmission device connecting seat are arranged on the top of the fan base, a fan front cover is arranged on the outside of the fan casing, a transmission device is arranged on the transmission device connecting seat, a transmission shaft is arranged on the transmission device, and the transmission shaft is sequentially sleeved with heat dissipation blades, a fan rear cover and a fan impeller in the direction of the fan casing.

[0006] Preferably, a connecting flange is provided on the side of the fan front cover facing away from the fan housing.

[0007] Preferably, a connecting keyway is provided on the transmission shaft, and the connecting keyway is connected to the fan impeller.

[0008] Preferably, a plurality of heat dissipation fins are provided on the heat dissipation blade.

[0009] Preferably, the fan rear cover is bolted to the inner side of the fan housing, and a heat insulation layer is provided on the side of the fan rear cover facing the fan housing.

[0010] Preferably, the transmission device comprises a motor, the output end of the motor is connected to the transmission shaft via a belt drive, and a protective cover is provided on the outer side of the belt.

[0011] Preferably, the transmission device connecting seat is arranged on the side of the fan housing facing away from the fan front cover.

[0012] It can be seen from the above technical solution that the utility model has the following beneficial effects:

[0013] The centrifugal fan structure is provided with a fan casing and a transmission device connecting seat on the top of the fan base, a fan front cover is provided on the outside of the fan casing, a transmission device is provided on the transmission device connecting seat, and a transmission shaft is provided on the transmission device, and the transmission shaft is sequentially sleeved with heat dissipation blades, a fan rear cover and a fan impeller in the direction of the fan casing, so that when the high-temperature fan is repaired, the fan and the pipeline do not need to be disassembled, and the transmission device, the fan rear cover and the fan impeller are directly removed from the rear side of the fan, thereby completing the repair of the entire fan, and after the repair is completed, they are installed back in reverse order, thereby improving the efficiency of repair, simplifying the installation process, and solving the problem that the high-temperature fan in the prior art is tightly connected to the pipeline, and the high-temperature fan needs to be disassembled as a whole for repair, which has very low maintenance efficiency and is very inconvenient during maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure separation of the utility model;

[0015] Figure 2 This is a schematic diagram of the separation structure of the transmission device of the utility model.

[0016] In the figure: 1. fan base; 2. fan housing; 3. transmission device connecting base; 4. fan front cover; 5. transmission device; 51. transmission shaft; 52. cooling blades; 53. fan rear cover; 54. fan impeller; 55. motor; 56. insulation layer; 57. cooling fins; 58. connecting keyway; 59. belt; 6. connecting flange; 7. protective cover. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] like Figure 1 and Figure 2As shown, a centrifugal fan structure includes a fan base 1, a fan housing 2, a transmission device connecting seat 3, a fan front cover 4 and a transmission device 5. The fan housing 2 and the transmission device connecting seat 3 are arranged on the top of the fan base 1, and the fan housing 2 and the transmission device connecting seat 3 are both connected and fixed to the fan base 1 by bolts. A fan front cover 4 is arranged on the outside of the fan housing 2, and the fan front cover 4 is fixed to the fan housing 2 by bolts. The transmission device 5 is arranged on the transmission device connecting seat 3, and the transmission device 5 is connected to the top of the transmission device connecting seat 3 by bolts. The transmission device 5 includes a transmission shaft 51, heat dissipation blades 52, fan back cover 53 and fan impeller 54, a transmission shaft 51 is arranged on the transmission device 5, the transmission shaft 51 transmits power, and the heat dissipation blades 52, fan back cover 53 and fan impeller 54 are sequentially sleeved on the transmission shaft 51 toward the fan housing 2, so that when the high-temperature fan is repaired, the fan and the pipeline do not need to be disassembled, and the transmission device 5, the fan back cover 53 and the fan impeller 54 can be directly removed from the rear side of the fan, thereby completing the repair of the entire fan. After the repair is completed, it can be installed back in reverse order, which improves the efficiency of maintenance and simplifies the installation process.

[0019] like Figure 1 and Figure 2 As shown, a connecting flange 6 is provided on the side of the fan front cover 4 facing away from the fan housing 2, and the connecting flange 6 is connected to the external pipeline by bolts. A connecting keyway 58 is provided on the transmission shaft 51, and the connecting keyway 58 is connected to the fan impeller 54, and the connecting keyway 58 is key-connected to the fan impeller 54. A plurality of heat dissipation fins 57 are provided on the heat dissipation blades 52, and the heat dissipation fins 57 play a role in heat dissipation. The heat dissipation blades 52 can be disassembled into two pieces. The fan rear cover 53 is bolted to the inner side of the fan housing 2, and a heat insulation layer 56 is provided on the side of the fan rear cover 53 facing the fan housing 2, and the heat insulation layer 56 plays a role in heat insulation protection. The fan rear cover 53 is connected and fixed to the fan housing 2 by bolts, the transmission device 5 includes a motor 55, the output end of the motor 55 is connected to the transmission shaft 51 by a belt 59, a protective cover 7 is arranged on the outside of the belt 59, the transmission device connecting seat 3 is arranged on the side of the fan housing 2 facing away from the fan front cover 4, the connecting key slot 58 is connected to the fan impeller 54 by a key connection, so that the fan impeller 54 and the transmission shaft 51 are connected as a whole, the transmission device 5 is connected by a belt 59 inside, and a protective cover 7 is arranged on the outside of the belt 59 to prevent people from being accidentally touched and injured, and at the same time protect the belt 59 from being affected by foreign objects during transmission.

[0020] 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 structure, characterized in that: The invention comprises a fan base (1), a fan housing (2) and a transmission device connecting seat (3) are arranged on the top of the fan base (1), a fan front cover (4) is arranged on the outside of the fan housing (2), a transmission device (5) is arranged on the transmission device connecting seat (3), a transmission shaft (51) is arranged on the transmission device (5), and a heat dissipation blade (52), a fan rear cover (53) and a fan impeller (54) are sequentially sleeved on the transmission shaft (51) in the direction of the fan housing (2).

2. A centrifugal fan structure according to claim 1, characterized in that: A connecting flange (6) is provided on the side of the fan front cover (4) facing away from the fan housing (2).

3. A centrifugal fan structure according to claim 1, characterized in that: The transmission shaft (51) is provided with a connecting keyway (58), and the connecting keyway (58) is connected to the fan impeller (54).

4. A centrifugal fan structure according to claim 1, characterized in that: A plurality of heat dissipation fins (57) are arranged on the heat dissipation blade (52).

5. A centrifugal fan structure according to claim 1, characterized in that: The fan rear cover (53) is bolted to the inner side of the fan housing (2), and a heat insulation layer (56) is provided on the side of the fan rear cover (53) facing the fan housing (2).

6. A centrifugal fan structure according to claim 1, characterized in that: The transmission device (5) comprises a motor (55), the output end of the motor (55) is connected to the transmission shaft (51) via a belt (59), and a protective cover (7) is provided on the outside of the belt (59).

7. A centrifugal fan structure according to claim 1, characterized in that: The transmission device connecting seat (3) is arranged on the side of the fan housing (2) facing away from the fan front cover (4).

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