Circulating stirring fan with air cooling disc as cooling structure for furnace

Abstract

The utility model discloses a circulating stirring fan with an air cooling disc as a cooling structure for a furnace, which comprises a motor, and a motor chassis and the air cooling disc are sequentially and fixedly arranged at the bottom end of the motor; the top end of a motor mandrel is installed in the motor, fan blades are installed at the bottom end of the motor mandrel, a fan wrapping body is arranged above the fan blades, and an air cooling disc installation flange is arranged between the fan wrapping body and the air cooling disc. The air cooling disc comprises an air cooling disc shell, and an annular space in the air cooling disc shell is an air cooling cavity; an air inlet and an air outlet are formed in the air cooling disc shell, and both the air inlet and the air outlet are communicated with the air cooling cavity; a partition plate is arranged in the air cooling cavity and located between the air inlet and the air outlet. According to the circulating stirring fan for the furnace, the air cooling disc serves as a cooling structure, heat is ingeniously transmitted into air through the design, the motor is rapidly cooled, and therefore the service life of the motor is prolonged, the phenomenon that equipment stops is avoided, and the use efficiency of the equipment is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat treatment equipment, relates to heat dissipation equipment of heat treatment equipment, and specifically relates to a furnace circulating stirring fan with an air cooling plate as a cooling structure. Background Art

[0002] The box-type multi-purpose furnace is one of the most widely used heat treatment equipment in the prior art. The stability of the atmosphere in the furnace mainly depends on the stirring of the circulating fan in the rear chamber. Since the box-type multi-purpose furnace has been operating at a high temperature during the production process, the heat in the furnace is transferred to the fan blades and the motor core shaft. The motor core shaft will continuously transfer the heat to the oil pan at the bottom, and then circulate with the heat transfer oil in the oil pillow to achieve the purpose of cooling and heat dissipation.

[0003] However, due to the limited amount of oil in the oil pillow, only a small amount of heat can be dissipated, causing the entire motor to remain at a very high temperature. The motor is prone to damage when it is in a high-temperature operation state for a long time, which in turn affects the uniformity of the carburizing atmosphere of the workpiece in the furnace, resulting in uneven heating and carburizing of the workpiece, seriously affecting product quality. In severe cases, this fault may cause the equipment to stop, affecting production. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a furnace circulating stirring fan with an air-cooled plate as a cooling structure, so as to solve the technical problem of poor cooling effect of the furnace circulating stirring fan with an oil pillow tank as a cooling structure in the prior art.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A circulating stirring fan for a furnace with an air-cooling plate as a cooling structure comprises a motor, wherein a motor chassis and an air-cooling plate are fixedly arranged at the bottom end of the motor in sequence; the top end of a motor core shaft is rotatably mounted in the motor, fan blades are fixedly mounted at the bottom end of the motor core shaft, a fan package is arranged above the fan blades, an air-cooling plate mounting flange is arranged between the fan package and the air-cooling plate, and the air-cooling plate, the air-cooling plate mounting flange and the fan package are connected by bolts.

[0007] The air-cooling plate comprises an air-cooling plate shell, and the annular space inside the air-cooling plate shell is an air-cooling cavity; an air inlet and an air outlet are provided on the air-cooling plate shell along a radial direction, and both the air inlet and the air outlet are connected to the air-cooling cavity; a partition is provided in the air-cooling cavity, and the partition is located between the air inlet and the air outlet, and the top and bottom ends of the partition are fixedly arranged on the upper inner surface and the lower inner surface of the air-cooling plate shell, respectively.

[0008] The utility model also has the following technical features:

[0009] The lower end of the fan enclosure is wrapped with heat-insulating cotton, and the heat-insulating cotton is fixed to the outside of the fan enclosure by steel bars.

[0010] The air cooling plate housing is provided with four air cooling plate mounting holes, which are evenly arranged along the circumferential direction, and bolts are installed in the air cooling plate mounting holes.

[0011] The hole at the center of the air cooling plate shell is a motor core shaft through hole.

[0012] The angle α between the air inlet and the air outlet is 45°, the angle β1 between the air inlet and the partition is 22.5°, and the angle β2 between the air outlet and the partition is 22.5°.

[0013] Compared with the prior art, the utility model has the following technical effects:

[0014] (I) The circulating stirring fan for a furnace of the utility model uses an air-cooled plate as a cooling structure. This design cleverly transfers heat to the air, allowing the motor to cool down quickly, thereby extending the service life of the motor, avoiding equipment downtime, and improving the use efficiency of the equipment.

[0015] (II) The utility model has a simple and reasonable structure, is easy to operate and use, has a low cost, and has broad prospects for promotion and application in actual production processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the air-cooling device for the furnace.

[0017] Figure 2 It is a structural schematic diagram of the air-cooled plate.

[0018] Figure 3 A cross-sectional view of an air-cooled plate.

[0019] Figure 4 It is a schematic diagram of the structure of the air cooling disk shell.

[0020] The meanings of the numbers and symbols in the figure are: 1-motor, 2-motor chassis, 3-air cooling plate, 4-motor core shaft, 5-fan blades, 6-fan package, 7-air cooling plate mounting flange, 8-insulation cotton, 9-rebar.

[0021] 301 - air cooling plate housing, 302 - air cooling chamber, 303 - air inlet, 304 - air outlet, 305 - partition, 306 - air cooling plate mounting hole, 307 - motor core shaft through hole.

[0022] The specific contents of the utility model are further explained in detail below in conjunction with the embodiments. DETAILED DESCRIPTION

[0023] It should be noted that, unless otherwise specified, all components in the present invention are components known in the art.

[0024] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of the present application fall within the protection scope of the present invention.

[0025] Example:

[0026] This embodiment provides a furnace circulating stirring fan with an air cooling plate as a cooling structure, such as Figure 1 As shown, it includes a motor 1, the bottom end of which is fixedly provided with a motor chassis 2 and an air-cooling plate 3 in sequence; the top end of a motor shaft 4 is rotatably installed in the motor 1, a fan blade 5 is installed at the bottom end of the motor shaft 4, a fan package 6 is arranged above the fan blade 5, an air-cooling plate mounting flange 7 is arranged between the fan package 6 and the air-cooling plate 3, and the air-cooling plate 3, the air-cooling plate mounting flange 7 and the fan package 6 are connected by bolts.

[0027] The air-cooling plate 3 is an internally hollow annular structure, comprising an air-cooling plate shell 301, and the annular space inside the air-cooling plate shell 301 is an air-cooling chamber 302; an air inlet 303 and an air outlet 304 are provided on the air-cooling plate shell 301 along the radial direction, and the air inlet 303 and the air outlet 304 are both connected to the air-cooling chamber 302; a partition 305 is provided in the air-cooling chamber 302, and the partition 305 is located between the air inlet 303 and the air outlet 304, and the top and bottom ends of the partition 305 are respectively fixedly arranged on the upper inner surface and the lower inner surface of the air-cooling plate shell 301.

[0028] In this embodiment, the air-cooled plate 3 is made of high-quality carbon structural steel known in the prior art, preferably 45# steel, which can not only ensure the heat generated by the motor shaft 4 to exchange heat with the cold air in the air-cooled cavity 302, but also ensure the mechanical properties and wear resistance of the structure.

[0029] In this embodiment, the motor 1, the motor chassis 2, the air cooling plate 3 and the motor core shaft 4 are an integrated structure, and the motor chassis 2 and the air cooling plate 3 are integrated by conventional means in the prior art, such as welding. The size of the air cooling plate 3 can be changed accordingly according to the size of the motor 1 structure. Since the air cooling plate 3 and the motor 1 are designed and installed as an integrated whole, it is necessary to determine reasonable tolerance matching during the design, manufacturing and installation process to ensure the parallelism of the two sides of the air cooling plate. During use, the smoothness of the motor operation is required. Reasonable dimensional tolerance requirements, shape and position tolerances are formulated during the processing and manufacturing process to improve the assembly accuracy and ensure that the air cooling plate can run smoothly during installation and use.

[0030] In this embodiment, after the cold gas is passed into the air cooling chamber 302 from the air inlet 303, due to the existence of the partition 305, the cold gas can only flow into the air cooling chamber 302 on one side of the partition 305 first, and then flow along the circumferential direction for a circle to gradually become hot, and then flow to the air cooling chamber 302 on the other side of the partition 305, and finally flow out from the air outlet 304. This arrangement can avoid the phenomenon of two-way flow circulation of the cold gas in the air cooling chamber 302, thereby ensuring a good cooling effect.

[0031] In this embodiment, according to actual needs, the cold gas is selected from cold air, cold nitrogen, cold argon, etc.

[0032] As a specific solution of this embodiment, the lower end of the fan body 6 is wrapped with heat insulation cotton 8, and the heat insulation cotton 8 is fixed to the outside of the fan body 6 by steel bars 9. In this embodiment, the fan body 6 and the heat insulation cotton 8 are both made of aluminum silicate ceramic fiber cotton material, and the fan body 6 and the heat insulation cotton 8 play a role in isolating the hot air in the furnace to prevent the motor core shaft 4 from overheating.

[0033] As a specific solution of this embodiment, four air cooling plate mounting holes 306 are provided on the air cooling plate housing 301, and the four air cooling plate mounting holes 306 are evenly arranged along the circumferential direction, and bolts are installed in the air cooling plate mounting holes 306. In this embodiment, the air cooling plate 3 and the air cooling plate mounting flange 7 are connected by bolts and the air cooling plate mounting holes 306 to ensure the stable installation of the air cooling plate 3, thereby ensuring that the air cooling plate 3 can run smoothly when in use.

[0034] As a specific solution of this embodiment, the hole at the center of the air cooling plate housing 301 is a motor core shaft through hole 307, and the motor core shaft through hole 307 can ensure that the motor core shaft 4 passes through it.

[0035] As a specific solution of this embodiment, the angle α between the air inlet 303 and the air outlet 304 is 45°, the angle β1 between the air inlet 303 and the partition 305 is 22.5°, and the angle β2 between the air outlet 304 and the partition 305 is 22.5°, that is, the partition 305 is located right in the middle of the air inlet 303 and the air outlet 304.

[0036] As a specific solution of this embodiment, a skeleton oil seal and asbestos packing are provided between the air cooling plate mounting flange 7 and the fan enclosure 6; in this embodiment, the skeleton oil seal and asbestos packing can seal the gap between the two to prevent air leakage from generating heat.

[0037] The installation and working process of this utility model is as follows:

[0038] First, install the air cooling plate mounting flange 7 on the bottom surface of the air cooling plate 3, then let the motor core shaft 4 pass through the fan package 6, then connect the air cooling plate mounting flange 7 and the fan package 6 together, and finally install the fan blades 5 on the bottom of the motor core shaft 4.

[0039] Second, one end of the ventilation pipe is connected to the air inlet 303 through a metal thread joint, and the other end of the ventilation pipe is connected to the air pump. The ventilation pipe is a metal pipe with an inner diameter of 12 mm.

[0040] Third, start the motor 1 and the air pump, and the furnace circulating stirring fan starts working. The fan blades 9 rotate to stir the atmosphere in the furnace to make it uniform. During the working process, cold gas is continuously introduced into the air cooling chamber 302 through the air pump, and the heat generated by the motor core shaft 4 will be carried away by the cold gas, and then the heated gas flows out from the air outlet 304 to achieve cooling.

Claims

1. A circulating stirring fan for a furnace with an air cooling plate as a cooling structure, comprising a motor (1), characterized in that: The bottom end of the motor (1) is fixedly provided with a motor chassis (2) and an air cooling plate (3) in sequence; the top end of the motor core shaft (4) is rotatably installed in the motor (1), the bottom end of the motor core shaft (4) is provided with a fan blade (5), a fan package (6) is provided above the fan blade (5), an air cooling plate mounting flange (7) is provided between the fan package (6) and the air cooling plate (3), and the air cooling plate (3), the air cooling plate mounting flange (7) and the fan package (6) are connected by bolts; The air cooling plate (3) comprises an air cooling plate shell (301), and the annular space inside the air cooling plate shell (301) is an air cooling chamber (302); an air inlet (303) and an air outlet (304) are provided on the air cooling plate shell (301) along a radial direction, and the air inlet (303) and the air outlet (304) are both connected to the air cooling chamber (302); a partition (305) is provided inside the air cooling chamber (302), and the partition (305) is located between the air inlet (303) and the air outlet (304), and the top end and the bottom end of the partition (305) are respectively fixedly arranged on the upper inner surface and the lower inner surface of the air cooling plate shell (301).

2. The furnace circulating stirring fan with an air cooling plate as a cooling structure as claimed in claim 1, characterized in that: The lower end of the fan body (6) is wrapped with heat insulation cotton (8), and the heat insulation cotton (8) is fixed to the outside of the fan body (6) by steel bars (9).

3. The furnace circulating stirring fan with an air cooling plate as a cooling structure as claimed in claim 1, characterized in that: The air cooling disk housing (301) is provided with four air cooling disk mounting holes (306), the four air cooling disk mounting holes (306) are evenly arranged along the circumferential direction, and bolts are installed in the air cooling disk mounting holes (306).

4. The furnace circulating stirring fan with an air cooling plate as a cooling structure as claimed in claim 1, characterized in that: The hole at the center of the air cooling disk housing (301) is a motor core shaft through hole (307).

5. The furnace circulating stirring fan with an air cooling plate as a cooling structure as claimed in claim 1, characterized in that: The angle α between the air inlet (303) and the air outlet (304) is 45°, the angle β1 between the air inlet (303) and the partition (305) is 22.5°, and the angle β2 between the air outlet (304) and the partition (305) is 22.5°.

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