Closed transmission device

Abstract

The utility model discloses a closed transmission device, which belongs to the technical field of aluminum bar heating furnaces, and comprises a transmission shaft main shaft, the front end of the transmission shaft main shaft extends into the heating furnace, an in-furnace transmission roller is arranged at the front end of the transmission shaft main shaft, and the middle part of the transmission shaft main shaft penetrates through a furnace body thermal insulation layer. A transmission shaft air channel is formed in the connecting position of the outer end face of the furnace body heat preservation layer and the transmission shaft, a front sealing structure is fixedly arranged on the front side of the transmission shaft air channel, and a fixing square bearing is arranged on the rear side of the transmission shaft air channel through a bearing fixing plate. The two sides of the transmission shaft air channel are sealed and blocked through the sealing rings, so that heat insulation is effectively achieved, dissipation of heat in the heating furnace is reduced, and use energy consumption of the heating furnace is reduced. Meanwhile, the temperature of the transmission shaft main shaft, the bearing and the chain belt can be lower, the thermal expansion effect is reduced, the service life of structural parts is longer, and the maintenance and replacement cost is lower.

Description

Technical Field

[0001] This utility model belongs to the technical field of aluminum rod heating furnace, specifically relating to a closed transmission device. Background Technology

[0002] An aluminum rod heating furnace or aluminum rod holding furnace is a device used to heat aluminum rods. The aluminum rods are heated to a specific temperature in the heating furnace, and then transported out by a transmission device. After being sheared, they are extruded by an extruder into specific aluminum metal products.

[0003] The existing transmission device for feeding heated aluminum bars is a cantilever structure, generally composed of multiple transmission shafts that support and feed the bars. However, firstly, because the transmission shafts are metal and the temperature inside the heating furnace is high, the bearings outside the furnace will expand due to heat conduction, significantly reducing their lifespan and increasing equipment maintenance costs. Secondly, the cantilevered installation of the transmission shafts, under the pressure of the aluminum bars, causes disturbances in the transmission, gradually enlarging the holes in the insulation cotton tightly attached to the shaft, leading to heat overflow from the furnace and increased energy consumption. Finally, the heat overflow from the furnace also causes the chain and bearing housings to heat up and age faster. The high temperature often causes the bearings to seize, forcing the transmission shaft to rotate, resulting in wear and tear. This causes the reducer to frequently operate under overload, shortening its lifespan, increasing maintenance costs and time, and affecting production efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a closed transmission device to solve the problems mentioned in the background art regarding the use of existing aluminum rod heating furnaces.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a closed transmission device, including a transmission shaft main shaft, the front end of which extends into a heating furnace, and an in-furnace transmission roller is provided at the front end of the transmission shaft main shaft. The middle part of the transmission shaft main shaft passes through the furnace body insulation layer, and a transmission shaft air duct is provided at the connection position between the outer end face of the furnace body insulation layer and the transmission shaft. A front sealing structure is fixedly provided on the front side of the transmission shaft air duct, and a fixed square bearing is provided on the rear side of the transmission shaft air duct through a bearing fixing plate. A second sealing ring is provided at the connection position between the bearing fixing plate and the transmission shaft main shaft.

[0006] Preferably, the front sealing structure includes a first sealing ring seat, a first sealing ring, and a sealing ring pressing adjustment plate.

[0007] Preferably, both the first and second sealing rings are made of wear-resistant and high-temperature resistant materials.

[0008] Preferably, the drive shaft duct is connected to a gas blower.

[0009] Preferably, the rear end of the drive shaft main shaft is fixed by a tail bearing seat, and a drive sprocket is provided on the rear end of the drive shaft main shaft.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] Both sides of the drive shaft air duct are sealed with sealing rings, which effectively insulates heat and reduces heat loss from the heating furnace, thus reducing the energy consumption of the heating furnace. At the same time, it can keep the temperature of the drive shaft main shaft, bearings and chain belt lower, reduce thermal expansion, extend the service life of structural components, and reduce maintenance and replacement costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] In the diagram: 1. Tail bearing seat; 2. Drive sprocket; 3. Fixed square bearing; 4. Second sealing ring; 5. Bearing fixing plate; 6. Drive shaft air duct; 7. First sealing ring seat; 8. First sealing ring; 9. Sealing ring pressing adjustment plate; 10. Furnace body insulation layer; 11. Drive shaft main shaft; 12. Heating aluminum rod; 13. Furnace internal drive roller. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Reference Figure 1 A closed transmission device includes a transmission shaft main shaft 11, the front end of which extends into the heating furnace, and an in-furnace transmission roller 13 is provided at the front end of the transmission shaft main shaft 11. The middle part of the transmission shaft main shaft 11 passes through the furnace body insulation layer 10, and a transmission shaft air duct 6 is provided at the connection position between the outer end face of the furnace body insulation layer 10 and the transmission shaft. A front sealing structure is fixedly provided on the front side of the transmission shaft air duct 6, and a fixed square bearing 3 is provided on the rear side of the transmission shaft air duct 6 through a bearing fixing plate 5. A second sealing ring 4 is provided at the connection position between the bearing fixing plate 5 and the transmission shaft main shaft 11.

[0016] To address the problem of heat conduction outwards from the drive shaft of existing aluminum rod heating furnaces, leading to heat leakage from the furnace, increased energy consumption, and accelerated equipment aging, this technical solution proposes a closed-loop transmission device. Specifically, the front end of the drive shaft 11 extends into the furnace, while the middle of the drive shaft 11 is isolated by the furnace body insulation layer 10, thereby reducing heat leakage. Simultaneously, a drive shaft duct 6 is provided at the contact point between the drive shaft 11 and the furnace body insulation layer 10 to recover heat from the drive shaft 11. The front side of the drive shaft duct 6 is fixed by a front sealing structure, and the bearing fixing plate 5 at the rear side of the drive shaft duct 6 is sealed with a second sealing ring 4, effectively insulating and reducing heat loss from the furnace, thus reducing energy consumption. Furthermore, this design allows for lower temperatures in the drive shaft 11, bearings, and chain belt, reducing thermal expansion and extending the service life of structural components, while also lowering maintenance and replacement costs.

[0017] Furthermore, the front sealing structure includes a first sealing ring 8 seat 7, a first sealing ring 8, and a sealing ring pressing adjustment plate 9.

[0018] Furthermore, both the first sealing ring 8 and the second sealing ring 4 are made of wear-resistant and high-temperature resistant sealing rings.

[0019] Through this technical solution, the first sealing ring 8 and the second sealing ring 4 isolate the transmission shaft air duct 6. The transmission shaft air duct 6 is used to cool down the transmission shaft main shaft 11 and conduct the heat of the transmission shaft main shaft 11 back for reuse. At the same time, the first sealing ring 8 and the second sealing ring 4 form a heat insulation barrier, thereby preventing the heat in the heating furnace from escaping through the shaft connection position. Both the first sealing ring 8 and the second sealing ring 4 are made of wear-resistant and high-temperature resistant sealing rings. Under long-term use, the fit clearance with the transmission shaft main shaft 11 will not change, thereby reducing heat loss, lowering energy consumption, and reducing the aging of structural components due to heat.

[0020] Furthermore, the drive shaft duct 6 is connected to a gas-fired blower.

[0021] The hot air generated by the cooling gas flowing through the drive shaft air duct 6 is drawn into the heat exchanger by the combustion fan and then into the burner for combustion. It then enters the furnace, thereby realizing heat recovery, reducing heat loss, and making the heating furnace consume less energy.

[0022] Furthermore, the rear end of the drive shaft main shaft 11 is fixed by the tail bearing seat 1, and a drive sprocket 2 is provided on the rear end of the drive shaft main shaft 11.

[0023] Working principle: The front end of the drive shaft main shaft 11 extends into the furnace of the heating furnace. The middle part of the drive shaft main shaft 11 is isolated by the furnace body insulation layer 10, thereby reducing the heat loss from the heating furnace. At the same time, a drive shaft air duct 6 is provided at the contact position between the drive shaft main shaft 11 and the furnace body insulation layer 10 to recover the heat of the drive shaft main shaft 11. The front side of the drive shaft air duct 6 is fixed by a front sealing structure, and the bearing fixing plate 5 on the rear side of the drive shaft air duct 6 is sealed with a second sealing ring 4, thereby effectively insulating and reducing the heat loss from the heating furnace, thus reducing the energy consumption of the heating furnace. At the same time, it can keep the temperature of the drive shaft main shaft 11, bearings and chain belt lower, reduce thermal expansion, extend the service life of structural components, and reduce maintenance and replacement costs.

[0024] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] In the description of this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this invention, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, those skilled in the art can combine different embodiments or examples and features of different embodiments or examples described in this invention without contradiction.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A closed transmission device, characterized in that: The device includes a drive shaft main shaft, the front end of which extends into the heating furnace, and an in-furnace drive roller is provided at the front end of the drive shaft main shaft. The middle part of the drive shaft main shaft passes through the furnace body insulation layer, and a drive shaft air duct is provided at the connection position between the outer end face of the furnace body insulation layer and the drive shaft. A front sealing structure is fixedly provided on the front side of the drive shaft air duct, and a fixed square bearing is provided on the rear side of the drive shaft air duct through a bearing fixing plate. A second sealing ring is provided at the connection position between the bearing fixing plate and the drive shaft main shaft.

2. The enclosed transmission device according to claim 1, characterized in that: The front sealing structure includes a first sealing ring seat, a first sealing ring, and a sealing ring pressing adjustment plate.

3. The enclosed transmission device according to claim 2, characterized in that: Both the first and second sealing rings are made of wear-resistant and high-temperature resistant materials.

4. The enclosed transmission device according to claim 1, characterized in that: The drive shaft duct is connected to a gas blower.

5. A closed transmission device according to claim 1, characterized in that: The rear end of the drive shaft is fixed by a tail bearing seat, and a drive sprocket is provided on the rear end of the drive shaft.

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