High-temperature-resistant all-fiber trolley type resistance furnace
The trolley-type resistance furnace, with its all-fiber structure and track design, solves the problem of unstable trolley movement, achieving stable movement in high-temperature environments and extending equipment lifespan, thus ensuring workpiece safety and operational reliability.
Patent Information
- Application Number
- CN202423214232.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-25
AI Technical Summary
Existing trolley-type resistance furnaces are unstable when moving in and out of the furnace body, and are prone to shaking and deviation, which leads to workpiece damage and safety hazards. Moreover, the wear of moving parts is accelerated with long-term use.
The furnace lining and track design, which adopt an all-fiber structure, combined with a helical geared motor and transmission mechanism, ensures the smooth movement of the trolley. The high-temperature resistance of the fiber blocks protects the furnace shell and reduces high-temperature erosion. The sliding connection between the moving wheels and the track at the bottom of the trolley provides stable support and guidance.
This technology enables stable movement of the trolley in high-temperature environments, extends the service life of the furnace shell, reduces equipment maintenance costs, and ensures the safety of the workpiece and the reliability of operation.
Smart Images
Figure CN223550866U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of resistance furnace technology, and in particular to a high-temperature resistant all-fiber trolley-type resistance furnace. Background Technology
[0002] Car-type resistance furnaces, as important industrial heating equipment, are widely used in metallurgy, machinery, aerospace, and many other fields. They are primarily used for heat treatment of metallic and ceramic materials, including various processes such as quenching, tempering, annealing, and normalizing. This effectively improves the microstructure and properties of materials, thereby meeting the performance requirements of different industrial products. In modern industrial production, high-quality heat treatment plays a crucial role in improving key performance indicators such as strength, hardness, toughness, and wear resistance of products.
[0003] In existing bogie-type resistance furnaces, the bogies often exhibit unstable movement when entering and exiting the furnace. Some bogies have imprecise wheel-rail connections or inadequate support and guiding structures, leading to swaying and deviation during movement. This instability can cause workpieces to shift or even fall off the bogie, damaging both the workpiece and the equipment, and posing safety hazards to operators. Over long-term use, frequent entry and exit from the furnace, coupled with high temperatures and heavy loads, can cause wear and tear on the bogie's moving parts, further exacerbating the instability.
[0004] In view of this, the present invention is proposed to solve the above-mentioned technical problems. Utility Model Content
[0005] To achieve the above objectives, this utility model is implemented through the following technical solution:
[0006] A high-temperature resistant all-fiber trolley-type resistance furnace includes a furnace shell and a furnace door. The furnace shell is lined with a furnace lining, and fiber blocks are arranged on the inner side wall of the furnace lining. Tracks are symmetrically installed along the length direction at the bottom of the furnace shell. The trolley body is mounted on the two tracks. Electrode lead-out rods are evenly arranged along the length direction at the bottom of the trolley body. A furnace bottom plate is provided on the upper part of the trolley body. A transmission mechanism is provided at the bottom of the furnace shell near the furnace door. The transmission mechanism is connected to the bottom of the trolley body.
[0007] A further preferred embodiment is that a helical gear reducer motor is installed on the upper part of the furnace shell near the furnace door, and the furnace door is raised and lowered vertically by the helical gear reducer motor driving the chain.
[0008] A further preferred embodiment is that resistance heating strips are installed on both sides of the furnace shell, the rear wall, the furnace bottom, and the furnace door.
[0009] A further preferred embodiment is that a ceramic gasket is provided between the resistance heating band and the fiber block.
[0010] A further preferred embodiment is that the bottom of the trolley body is provided with movable wheels, the trolley body is slidably connected to the track through the movable wheels, and the bottom of the trolley body is provided with positioning blocks.
[0011] More preferably, the transmission mechanism includes a reducer and an AC motor installed near the furnace door, with a transmission wheel provided at one end of the reducer and the AC motor.
[0012] A further preferred embodiment is that the reducer and the AC motor drive the transmission wheel to rotate, and the transmission wheel is connected to the positioning block.
[0013] Compared with the prior art, this utility model has the following advantages: the fiber blocks set on the inner sidewall of the furnace lining have excellent high temperature resistance and can work stably for a long time in high temperature environment. In addition, the all-fiber structure can withstand the high temperature generated by the resistance heating belt, effectively protecting the furnace shell from high temperature corrosion, extending the service life of the furnace shell, and reducing the equipment maintenance and replacement costs caused by high temperature damage. The sliding connection between the moving wheels at the bottom of the trolley body and the track ensures the smooth movement of the trolley body when entering and exiting the furnace shell. The track is symmetrically installed along the length of the bottom of the furnace shell, providing stable support and guidance for the trolley body, reducing the shaking and deviation of the trolley body during movement, which helps to ensure the safety of the workpiece during the process of entering and exiting the furnace and avoids damage to the workpiece due to trolley shaking. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this embodiment;
[0015] Figure 2 This is a side view of the structure in this embodiment.
[0016] Reference numerals in the attached drawings: 1. Furnace shell; 2. Furnace door; 3. Helical gear reducer motor; 4. Transmission mechanism; 5. Resistance heating belt; 6. Fiber block; 7. Furnace bottom plate; 8. Electrode lead-out rod; 9. Track; 10. Trolley body; 11. Moving wheel; 12. Reducer and AC motor; 13. Transmission wheel. Detailed Implementation
[0017] The following is in conjunction with the appendix Figures 1 to 2 This utility model will be described in further detail.
[0018] A high-temperature resistant, all-fiber trolley-type resistance furnace, such as... Figure 1As shown, the furnace includes a furnace shell 1 and a furnace door 2. The furnace shell 1 is equipped with a furnace lining. For example, the furnace lining is a full fiber structure, made of zirconium fiber cotton, which is mechanically folded and compressed, and then constructed using a standard rivet mounting method. Furthermore, the full fiber folded blocks are pre-compressed again before mounting (compression density ≥230Kg / m3). Even further, after the furnace lining is made, a layer of high-temperature curing agent is sprayed on the surface to form a heat insulation wall, increasing the strength and heat radiation performance of the furnace lining surface, and further reducing the heat storage loss of the furnace lining, achieving the effect of rapid heating and maximizing the thermal efficiency of the resistance furnace. Fiber blocks 6 are provided on the inner side wall of the furnace lining. Tracks 9 are symmetrically installed along the length direction at the bottom of the furnace shell 1. The two tracks 9 are used to set up a trolley body 10. Electrode lead-out rods 8 are evenly arranged along the length direction at the bottom of the trolley body 10. A furnace bottom plate 7 is provided on the upper part of the trolley body 10. A transmission mechanism 4 is provided on the bottom side of the furnace shell 1 near the furnace door 2. The transmission mechanism 4 is connected to the bottom of the trolley body 10.
[0019] Furthermore, the furnace shell 1 is composed of selected steel plates and welded steel structures, making it sturdy, strong, durable, and reliable. All welds are uniform and smooth, without defects such as porosity, slag inclusion, or lack of fusion. The furnace body has a straight and beautiful appearance, without wrinkles or unevenness.
[0020] The fiber blocks 6 installed on the inner sidewall of the furnace lining have excellent high-temperature resistance and can work stably for a long time in high-temperature environments. Furthermore, the all-fiber structure can withstand the high temperatures generated by the resistance heating belt, effectively protecting the furnace shell 1 from high-temperature corrosion, extending the service life of the furnace shell 1, and reducing the equipment maintenance and replacement costs caused by high-temperature damage. The sliding connection between the moving wheels 11 at the bottom of the trolley body 10 and the track 9 ensures the smooth movement of the trolley body 10 when entering and exiting the furnace shell 1. The track 9 is symmetrically installed along the length of the bottom of the furnace shell 1, providing stable support and guidance for the trolley body 10, reducing the shaking and deviation of the trolley body 10 during movement, which helps to ensure the safety of the workpieces during the process of entering and exiting the furnace and avoids damage to the workpieces due to trolley shaking.
[0021] Specifically, such as Figure 1 and Figure 2 As shown, a helical gear reducer motor 3 is installed on the upper part of the furnace shell 1 near the furnace door 2. The furnace door 2 is raised and lowered vertically by the helical gear reducer motor 3 driving the chain. This further ensures that the furnace door 2 has no inertia during operation, is reliably sealed, and has fast and slow speed adjustment.
[0022] Furthermore, a soft-hard contact sealing structure is set between the furnace door 2 and the furnace lining. That is, the fiber sealing blocks around the furnace door 2 protrude from the inner lining of the furnace door 2 and are made into an adjustable form. Specifically, when the furnace door 2 is opened and closed, a roller mechanism is used so that the furnace door 2 can automatically leave the door frame when it is lifted to avoid sliding friction and reduce lifting resistance. After it is lowered into place, it automatically presses against the door frame, which improves the sealing degree and resistance to furnace pressure. Furthermore, the gap between the furnace door 2 and the door frame is 40mm to ensure that the furnace door moves smoothly when it is opened and closed.
[0023] Furthermore, furnace door 2 consists of a full fiber lining and a steel structure shell. The lining is made of fiber folded blocks, and the folded blocks are made in the same way as the furnace body lining. The shell of furnace door 2 is welded from profiled plates. The overall frame ensures that it will not deform under hot conditions, is sturdy and durable, and guarantees its long-term use. Furthermore, the main body material of furnace door 2 is made of steel plates and profiled steel welded together, which can not only ensure the overall rigidity and strength of furnace door 2, but also make furnace door 2 lightweight and reduce its weight. The fiber lining is installed by hanging and riveting, which can effectively ensure the firmness of the fibers during the frequent opening and closing of furnace door 2 and increase the service life of furnace door 2.
[0024] Specifically, resistance heating strips 5 are installed on both sides, the rear wall, the bottom of the furnace shell 1, and the furnace door 2. Furthermore, the resistance heating strips 5 are manufactured using special molds to ensure that they are not damaged during processing. The resistance heating strips 5 are fixed with special ceramic screws, and their structure makes installation convenient, maintenance and replacement quick, and they will never form a thermal short circuit with the furnace shell to cause local overheating of the furnace shell.
[0025] Specifically, a ceramic washer is provided between the resistance heating band 5 and the fiber block 6 to further ensure that the fiber block 6 does not directly contact the resistance heating band 5, thereby increasing the heating effect of the resistance heating band 5. Furthermore, both the ceramic screw and the washer are made of high-alumina material and sintered at medium temperature to ensure that they have sufficient strength and service life.
[0026] Specifically, the bottom of the trolley body 10 is provided with a movable wheel 11, and the trolley body 10 is slidably connected to the track 9 through the movable wheel 11. The bottom of the trolley body 10 is provided with a positioning block.
[0027] Furthermore, the bottom of the trolley body 10 is equipped with a two-layer longitudinal and transverse frame structure welded from channel steel, steel plates, and other structural steel, which provides strong resistance to thermal deformation and effectively reduces heat transfer from the platform. Its rigidity ensures normal operation under full load and prevents deformation over long-term use. The moving wheels 11 of the trolley body 10 are machined from castings. The drive shaft is precision-machined from 45# steel and undergoes heat treatment. The drive bearings are roller bearings to ensure load requirements are met.
[0028] Specifically, to reduce the wheel pressure on the trolley body 10, wheels are installed at the bottom of the trolley to support the entire trolley. The lining is a composite lining made of high-alumina bricks, lightweight refractory bricks, and insulating bricks. Heating element mounting channels are constructed on the lining. High-alumina refractory bricks are used for easily impacted and load-bearing areas (a binder is added to the mortar during construction) to enhance the structural strength of the furnace lining. Expansion joints are left during fabrication to prevent damage to the lining due to expansion under heat.
[0029] Specifically, the transmission mechanism 4 includes a reducer and an AC motor 12 installed near the furnace door 2. A transmission wheel 13 is provided at one end of the reducer and AC motor 12. Furthermore, the transmission method is a blunt gear transmission, ensuring smooth and reliable operation. The trolley body 10 has limit switches to prevent overtravel. The traveling device features a multi-axis rigid connection, resulting in a compact structure, robust assembly, flexible entry and exit, simple operation, and convenient maintenance.
[0030] Specifically, the reducer and AC motor 12 drive the transmission wheel 13 to rotate. The transmission wheel 13 is connected to the positioning block. Furthermore, the reducer and AC motor 12 drive the transmission wheel 13 to move on the track 9 through the transmission sprocket, thereby ensuring the stability of the trolley body 10 and further achieving the goals of high efficiency, energy saving and safety.
[0031] Furthermore, the furnace shell 1 is equipped with a temperature control system. Specifically, the temperature control adopts a segmented and zoned control system, using a temperature control instrument program for temperature control. By setting parameters, optimal control of each temperature zone can be achieved. Utilizing its online self-tuning function, the optimal PID parameters inside the furnace shell 1 can be calculated to achieve relatively ideal temperature stability. The heating control loop uses a power regulator to adjust the output heating power, thereby changing the magnitude of the output heating power to achieve temperature control of each zone.
[0032] Furthermore, the furnace shell 1 is also equipped with a temperature over-temperature alarm system in the heating control circuit. Specifically, when an over-temperature occurs in a certain area, the high-power contactor in the main circuit cuts off the heating main circuit of that area to ensure the safety of the workpieces and equipment inside the furnace shell 1, and at the same time, it provides an audible and visual alarm.
[0033] This specific embodiment is merely an explanation of the utility model and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of protection of this utility model.
Claims
1. A high-temperature resistant all-fiber trolley-type electric resistance furnace, comprising a furnace shell (1) and a furnace door (2), characterized in that, The furnace shell (1) is provided with a furnace lining inside. Fiber blocks (6) are provided on the inner side wall of the furnace lining. Tracks (9) are symmetrically installed along the length direction at the bottom of the furnace shell (1). A trolley body (10) is provided on both tracks (9). Electrode lead-out rods (8) are evenly arranged along the length direction at the bottom of the trolley body (10). A furnace bottom plate (7) is provided on the upper part of the trolley body (10). A transmission mechanism (4) is provided at the bottom of the furnace shell (1) near the furnace door (2). The transmission mechanism (4) is connected to the bottom of the trolley body (10).
2. The high-temperature resistant all-fiber trolley-type electric resistance furnace according to claim 1, characterized in that, A helical gear reducer motor (3) is provided on the upper part of the furnace shell (1) near the furnace door (2). The furnace door (2) is raised and lowered by the helical gear reducer motor (3) driving the chain to move vertically up and down.
3. The high-temperature resistant all-fiber trolley-type electric resistance furnace according to claim 1, characterized in that, Resistance heating strips (5) are installed on both sides, the rear wall, the bottom of the furnace shell (1) and the furnace door (2).
4. The high-temperature resistant all-fiber trolley-type electric resistance furnace according to claim 3, characterized in that, A ceramic gasket is provided between the resistance heating strip (5) and the fiber block (6).
5. The high-temperature resistant all-fiber trolley-type electric resistance furnace according to claim 1, characterized in that, The trolley body (10) is provided with a movable wheel (11) at the bottom. The trolley body (10) is slidably connected to the track (9) through the movable wheel (11). The trolley body (10) is provided with a positioning block at the bottom.
6. The high-temperature resistant all-fiber trolley-type electric resistance furnace according to claim 1, characterized in that, The transmission mechanism (4) includes a speed reducer and an AC motor (12) installed on the side near the furnace door (2), and a transmission wheel (13) is provided at one end of the speed reducer and the AC motor (12).
7. The high-temperature resistant all-fiber trolley-type electric resistance furnace according to claim 6, characterized in that, The reducer and AC motor (12) drive the transmission wheel (13) to rotate, and the transmission wheel (13) is connected to the positioning block.