Heavy furnace door lifting mechanism of high-temperature furnace

Abstract

The heavy furnace door lifting mechanism comprises a furnace body, a furnace door and a door frame, a feeding port is formed in the peripheral side of the furnace body, the door frame is arranged on the front side of the feeding port, the furnace door is movably arranged on the door frame, the furnace door is used for opening or closing the feeding port, a lifting assembly is further arranged on the door frame, and a descending assembly is used for lifting or descending the furnace door. Through the arranged lifting assembly, a first chain and a second chain lift or descend the furnace door at the same time, the furnace door is prevented from inclining or shaking in the lifting process, an arranged helical tooth speed reducer drives a first transmission chain wheel and a second transmission chain wheel to rotate, and under the action of a first guide wheel and a second guide wheel, the furnace door is prevented from inclining or shaking. Compared with manual opening and closing of the furnace door in the prior art, manual opening and closing of the furnace door by workers are avoided, the situation that the workers are scalded due to high temperature is avoided, safety of the workers is improved, and safety and convenience of opening and closing of the furnace door are improved compared with closing of the furnace door through a plug pin structure.

Description

Technical Field

[0001] The utility model relates to the technical field of heating furnaces, in particular to a heavy-duty furnace door lifting mechanism for a high-temperature furnace. Background Art

[0002] A high-temperature furnace is a type of heating equipment capable of generating and maintaining high operating temperatures, typically reaching several hundred degrees Celsius or even higher. It is commonly used for high-temperature processing of materials. High-temperature furnace doors typically open wide, though some are manually operated from left to right. Factory-grade high-temperature furnaces typically feature doors that open on both sides.

[0003] Existing high-temperature furnaces, because the furnace opening is always open, cause significant heat loss and can easily cause operator injury. For furnaces with doors, direct contact with the door handles can easily lead to burns when opening and closing the door at high temperatures. Furthermore, the latch mechanism between the furnace door and the furnace body, or between the left and right doors, is used to close the door. This structure is prone to deformation due to high temperatures, increasing resistance when opening and closing the door. This significantly increases the difficulty of opening and closing the door during high-temperature expansion.

[0004] In view of this, the present invention is proposed to solve the above technical problems. Utility Model Content

[0005] The utility model aims to provide a heavy-duty furnace door lifting mechanism for a high-temperature furnace, so as to solve the technical problem that workers are easily scalded when the furnace door of the existing heating furnace is opened or closed.

[0006] The technical solution of the utility model is: a heavy-duty furnace door lifting mechanism for a high-temperature furnace comprises a furnace body, a furnace door and a door frame, a feed port is provided on the peripheral side of the furnace body, the door frame is arranged in front of the feed port, the furnace door is movably arranged on the door frame, the furnace door is used to open or close the feed port, and a lifting component is further provided on the door frame, and the lowering component is used to lift or lower the furnace door;

[0007] The lifting assembly includes a first transmission sprocket and a second transmission sprocket arranged at the upper end of the door frame. The first transmission sprocket and the second transmission sprocket are arranged in sequence from front to back. The upper end of the door frame is provided with a first guide wheel and a second guide wheel from right to left. The first transmission sprocket is engaged with the first guide wheel with a first chain, and the second transmission sprocket is engaged with the second guide wheel with a second chain. One end of the first chain and the second chain is connected to the furnace door, and the other end of the first chain and the second chain is connected to a counterweight barrel. The first transmission sprocket and the second transmission sprocket are driven by a helical gear reducer.

[0008] Furthermore, third guide wheels are provided below the first transmission sprocket and the second transmission sprocket, and the first chain and the second chain are respectively engaged with the two third guide wheels.

[0009] Furthermore, vertical roller tracks are provided on both sides of the door frame, and the roller tracks are arranged outwardly and tilted from front to back;

[0010] A plurality of rollers are evenly distributed on both sides of the furnace door, and the plurality of rollers are slidably arranged in the roller tracks on both sides.

[0011] Furthermore, a plurality of lifting wheels are provided on the top of the furnace door, and the lifting wheels are slidably connected to the outer side wall of the feed port.

[0012] Furthermore, a wedge-shaped pressing block is provided at the bottom of the furnace door;

[0013] The lower end of the door frame is provided with a groove matched with the wedge-shaped pressing block, and the wedge-shaped pressing block is detachably connected to the groove.

[0014] By adopting the above technical solution, the utility model has the following beneficial effects:

[0015] By setting up a lifting assembly, the first chain and the second chain can simultaneously lift or lower the furnace door, and the first chain and the second chain are evenly distributed on the top of the furnace door to share the load weight, thereby preventing the furnace door from tilting or shaking during the lifting process. The first transmission sprocket and the second transmission sprocket are driven to rotate by the set helical gear reducer, and the furnace door is driven to rise and fall under the action of the first guide wheel and the second guide wheel. Compared with the manual opening and closing of the furnace door in the prior art, the manual opening and closing of the furnace door by the staff is avoided, and the staff is avoided from being scalded by high temperature, thereby improving the safety of the staff. Compared with closing the furnace door by a latch structure, the safety and convenience of opening and closing the furnace door are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are part of this application and are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. In the drawings:

[0017] Figure 1 This is a schematic diagram of the structure of the heavy-duty furnace door lifting mechanism for a high-temperature furnace provided in this embodiment of the present application;

[0018] Figure 2 for Figure 1 A structural schematic diagram of the heavy-duty door lifting mechanism of a high-temperature furnace is provided from another perspective.

[0019] Figure numerals: 1. furnace body; 2. door frame; 3. helical gear reducer; 4. first transmission sprocket; 5. second transmission sprocket; 6. furnace door; 7. counterweight barrel; 8. first guide wheel; 9. second guide wheel; 10. first chain; 11. second chain; 12. third guide wheel; 13. furnace lining.

[0020] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0021] The specific implementation of the present utility model is further described in detail with reference to the accompanying drawings.

[0022] See also Figures 1 to 2 As shown, the embodiment of the present application provides a heavy-duty furnace door lifting mechanism for a high-temperature furnace, comprising a furnace body 1, a furnace door 6 and a door frame 2. A feed port is provided on the periphery of the furnace body 1, so that a heating chamber is formed in the furnace body 1, and a furnace lining 13 is provided on the inner wall of the heating chamber. The door frame 2 is provided in front of the feed port, and the furnace door 6 is movably provided on the door frame 2. The furnace door 6 is used to open or close the feed port. A lifting assembly is further provided on the door frame 2, and the lowering assembly is used to lift or lower the furnace door 6; the lifting assembly comprises a first transmission sprocket 4 and a second transmission sprocket 5 provided on the upper end of the door frame 2. The first transmission sprocket 4 and the second transmission sprocket 5 are arranged in sequence from front to back, and the first guide wheel 8 and the second guide wheel 9 are arranged in sequence from right to left on the upper end of the door frame 2. The first transmission sprocket 4 and the first guide wheel 8 are meshed with a first chain 10, and the second transmission sprocket 5 and the second guide wheel 9 are meshed with a second chain 11. One end of the first chain 10 and the second chain 11 are connected to the furnace door 6, and the other end of the first chain 10 and the second chain 11 are connected to the counterweight barrel 7. The first transmission sprocket 4 and the second transmission sprocket 5 are driven by the helical gear reducer 3.

[0023] It should be noted that the furnace body 1 is made of high-temperature resistant materials, such as stainless steel, which can withstand thermal stress in high-temperature environments and ensure stable operation in high-temperature environments; the helical gear reducer 3 is used to amplify the output torque of the motor to meet the needs of lifting heavy loads.

[0024] Furnace body 1 also contains a heating element, a resistance belt, electrically connected to an external power supply to maintain the furnace temperature at the desired heat treatment temperature. The power supply controls the current and stability of the resistance belt to meet the temperature requirements of different processes. Furnace body 1 also features a temperature control system, which monitors and regulates the operation of the entire furnace 1, ensuring stability of parameters such as the furnace temperature and atmosphere. Utilizing advanced PID automatic control and a touchscreen interface, the system offers functions such as temperature setting, power adjustment, lift control, and fault alarms. During operation, the temperature control system monitors the furnace temperature and the status of the lift mechanism in real time, automatically adjusting the power of the resistance belt and the speed of the lift mechanism according to the set process parameters to ensure safe and stable operation. The temperature control system also features self-diagnosis, providing prompt alarm signals and displaying the type and location of any equipment failures.

[0025] In the above scheme, the lifting assembly is set up, so that the first chain 10 and the second chain 11 can lift or lower the furnace door 6 at the same time. The first chain 10 and the second chain 11 are evenly distributed on the top of the furnace door 6 to share the load weight and prevent the furnace door 6 from tilting or shaking during the lifting process. The first transmission sprocket 4 and the second transmission sprocket 5 are driven to rotate by the set helical gear reducer 3. Under the action of the first guide wheel 8 and the second guide wheel, the furnace door 6 is driven to rise and fall. Compared with the manual opening and closing of the furnace door 6 in the prior art, it avoids the manual opening and closing of the furnace door 6 by the staff, avoids the high temperature causing burns to the staff, and improves the safety of the staff. Compared with closing the furnace door 6 by the latch structure, the safety and convenience of opening and closing the furnace door 6 are improved.

[0026] In some possible implementations, see Figure 1 As shown, a third guide wheel 12 is provided below the first transmission sprocket 4 and the second transmission sprocket 5 , and the first chain 10 and the second chain 11 are respectively engaged with the two third guide wheels 12 .

[0027] In the above solution, the third guide wheel 12 can prevent the first chain 10 and the second chain 11 from running off course, provide lateral restraint for the first chain 10 and the second chain 11, and prevent the counterweight barrel 7 from shaking during the process of raising and lowering the furnace door 6.

[0028] In some possible implementation schemes, vertical roller tracks (not shown in the figure) are provided on both sides of the door frame 2, and the roller tracks are inclined outward from front to back. Multiple rollers are evenly distributed on both sides of the furnace door 6, and the multiple rollers can be slidably set in the roller tracks on both sides.

[0029] It should be noted that the friction between the furnace door 6 and the door frame 2 is relatively large, so when the furnace door 6 is opened, there will be a lot of shaking between the furnace door 6 and the furnace body 1, causing it to collide with the furnace body 1 for a long time, resulting in the loosening of internal parts of the furnace body 1, which is very harmful. Through the inclined roller track and roller, the furnace door 6 automatically leaves the door frame 2 when it rises, avoiding sliding friction and reducing lifting resistance. When the furnace door 6 descends, it automatically presses the door frame 2, which improves the sealing degree of the furnace door 6 and its ability to resist the pressure inside the furnace. The disengagement gap between the furnace door 6 and the door frame 2 is 40mm to ensure that the furnace door 6 runs smoothly when opening or closing.

[0030] In some possible implementation schemes, a plurality of lifting wheels are provided on the top of the furnace door 6 , and the lifting wheels are slidably connected to the outer side wall of the feed port.

[0031] In the above scheme, when the furnace door 6 is closed, the jacking wheels can assist in forming a tight fit between the furnace door 6 and the door frame 2. When there is pressure in the furnace, the jacking wheels help the furnace door 6 to remain in the correct position and prevent the furnace door 6 from being pushed open under the action of internal pressure. Although the sealing of the furnace door 6 mainly depends on the sealing material, the jacking wheels can ensure the position stability of the furnace door 6 when it is under pressure, ensuring that the sealing material can play an effective role.

[0032] In some possible implementation schemes, a wedge-shaped pressing block (not shown in the figure) is provided at the bottom of the furnace door 6, and a groove matching the wedge-shaped pressing block is provided at the lower end of the door frame 2, and the wedge-shaped pressing block and the groove are detachably connected.

[0033] In the above scheme, by setting the wedge-shaped clamping block and the groove, when the furnace door 6 descends, the wedge-shaped clamping block is embedded in the groove, which will press the furnace door 6 toward the side of the door frame 2. The inclined angle of the wedge-shaped clamping block is 30-45 degrees, which can effectively convert the vertical displacement into the horizontal clamping force when the furnace door 6 descends.

[0034] By setting up a lifting assembly, the first chain 10 and the second chain 11 can synchronously lift and lower the furnace door 6. These two chains are evenly distributed on the top of the furnace door 6, which can share the load of the furnace door 6 and effectively prevent the furnace door 6 from tilting or shaking during lifting. The helical gear reducer 3 can drive the first transmission sprocket 4 and the second transmission sprocket 5 to rotate, and with the assistance of the first guide wheel 8 and the second guide wheel 9, the furnace door 6 can be lifted and lowered. Compared with the traditional method of manually opening and closing the furnace door 6, this design avoids manual operation by the staff, prevents the staff from being burned by high temperature, and ensures the safety of the staff. Moreover, compared with relying on the latch structure to close the furnace door 66, this method of opening and closing the furnace door 6 has significantly improved safety and convenience.

[0035] This specific embodiment is merely an explanation of the utility model and is not a limitation of the utility model. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed, but as long as they are within the scope of protection of the utility model, they are protected by patent law.

Claims

1. A heavy-duty furnace door lifting mechanism for a high-temperature furnace, comprising a furnace body (1), a furnace door (6) and a door frame (2), wherein a feed port is provided on the peripheral side of the furnace body (1), the door frame (2) is arranged in front of the feed port, the furnace door (6) is movably arranged on the door frame (2), and the furnace door (6) is used to open or close the feed port, characterized in that: The door frame (2) is also provided with a lifting assembly, and the lowering assembly is used to lift or lower the furnace door (6); The lifting assembly comprises a first transmission sprocket (4) and a second transmission sprocket (5) arranged at the upper end of the door frame (2), the first transmission sprocket (4) and the second transmission sprocket (5) being arranged in sequence from front to back, a first guide wheel (8) and a second guide wheel (9) being arranged in sequence from right to left at the upper end of the door frame (2), a first chain (10) being meshed with the first transmission sprocket (4) and the first guide wheel (8), a second chain (11) being meshed with the second transmission sprocket (5) and the second guide wheel (9), one end of the first chain (10) and the second chain (11) being connected to the furnace door (6), the other end of the first chain (10) and the second chain (11) being connected to a counterweight barrel (7), and the first transmission sprocket (4) and the second transmission sprocket (5) being driven by a helical gear reducer (3).

2. The heavy-duty door lifting mechanism for a high-temperature furnace according to claim 1, characterized in that: A third guide wheel (12) is provided below each of the first transmission sprocket (4) and the second transmission sprocket (5), and the first chain (10) and the second chain (11) are respectively engaged with the two third guide wheels (12).

3. The heavy-duty door lifting mechanism for a high-temperature furnace according to claim 1, characterized in that: Both sides of the door frame (2) are provided with vertical roller tracks, and the roller tracks are arranged outwardly and tilted from front to back; A plurality of rollers are evenly distributed on both sides of the furnace door (6), and the plurality of rollers are slidably arranged in roller tracks on both sides.

4. The heavy-duty door lifting mechanism for a high-temperature furnace according to claim 3, characterized in that: A plurality of lifting wheels are provided on the top of the furnace door (6), and the lifting wheels are slidably connected to the outer side wall of the feed port.

5. The heavy-duty door lifting mechanism for a high-temperature furnace according to claim 4, characterized in that: A wedge-shaped pressing block is provided at the bottom of the furnace door (6); The lower end of the door frame (2) is provided with a groove that matches the wedge-shaped pressing block, and the wedge-shaped pressing block is detachably connected to the groove.

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