Self-circulation oil groove type industrial furnace

Abstract

The utility model relates to the technical field of industrial furnaces, and discloses a self-circulation oil groove type industrial furnace which comprises a support, an outer shell is fixedly connected to the upper surface of the support, a connecting flange is fixedly connected to one side of the outer wall of the outer shell, an inner shell is fixedly connected to one side of the outer wall of the connecting flange, and an inner oil groove is fixedly connected to the inner wall of the inner shell. A circulation assembly is installed on one side of the inner oil groove, a feeding pipe is installed on the upper surface of the inner shell, and a sealing door is arranged on one side of the inner shell. The circulating assembly comprises a first transmission pump, and one side of the outer wall of the first transmission pump is arranged on one side of the inner oil groove. According to the self-circulation cooling device for the industrial furnace, oil liquid is efficiently collected by arranging the first wavy coil pipe and the conical hopper, the oil liquid is driven by the first transmission pump to circulate to the second coil pipe and is evenly sprayed through the nozzles, efficient self-circulation of the cooling oil liquid is achieved, the heat exchange efficiency is improved, the problems that a traditional paddle is poor in stirring circulation and low in cooling performance are effectively solved, and the practicability of the industrial furnace is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of industrial furnace technology, and in particular to a self-circulating oil tank type industrial furnace. Background Technology

[0002] In metal heat treatment processes, oil bath industrial furnaces are widely used in the automotive, aerospace, and machinery manufacturing industries as crucial equipment for quenching or cooling workpieces. These furnaces utilize an oil bath within a sealed furnace body. Workpieces are heated to a preset temperature and then immersed in the cooling medium to achieve surface microstructure transformation and performance enhancement. To ensure the stability and uniformity of the quenching effect, industrial furnace systems place high demands on the flow efficiency, heat exchange performance, and circulation capacity of the cooling oil.

[0003] Currently, traditional oil bath industrial furnaces mainly employ paddle or impeller stirring structures to mechanically agitate the oil, promoting uniform oil temperature distribution and improving heat exchange efficiency. However, this type of stirring method suffers from numerous dead zones and uneven mixing, especially under high-viscosity oil conditions, where oil circulation is obstructed, easily leading to insufficient cooling and affecting quenching uniformity and efficiency. Furthermore, long-term operation of the stirring components results in severe wear, high energy consumption, and complex structural maintenance, making it difficult to meet the demands of high-efficiency, high-precision heat treatment processes. Therefore, a self-circulating oil bath industrial furnace is proposed to address these issues. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a self-circulating oil tank industrial furnace, which aims to improve the problem that traditional oil tank industrial furnaces mainly use paddle or impeller stirring structures to mechanically stir the oil to promote uniform oil temperature distribution and improve heat exchange efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a self-circulating oil tank type industrial furnace, including a support frame, an outer shell fixedly connected to the upper surface of the support frame, a connecting flange fixedly connected to one side of the outer wall of the outer shell, an inner shell fixedly connected to one side of the outer wall of the connecting flange, an inner oil tank fixedly connected to the inner wall of the inner shell, a circulation component installed on one side of the inner oil tank, a feed pipe installed on the upper surface of the inner shell, and a sealing door provided on one side of the inner shell;

[0006] The circulation assembly includes a first transfer pump, one side of which is disposed on one side of the inner oil tank. The input end of the first transfer pump is fixedly connected to a first connecting pipe, one end of which is disposed through the interior of the inner oil tank. One end of the first connecting pipe is fixedly connected to a first coil, and a conical hopper is fixedly connected to the outer wall of the first coil. The output end of the first transfer pump is fixedly connected to a second coil, the outer wall of the second coil is disposed through the side wall of the inner oil tank, and a nozzle is fixedly connected to the outer wall of the second coil.

[0007] Furthermore, a connecting cylinder is fixedly connected to one side of the outer wall of the outer shell, and a storage tank is fixedly connected to one end of the connecting cylinder.

[0008] Furthermore, a water inlet pipe is fixedly connected to the upper surface of the storage tank, and a water outlet pipe is fixedly connected to the lower side of the outer wall of the storage tank.

[0009] Furthermore, a motor is fixedly connected to the upper surface of the storage tank, and a drive shaft is fixedly connected to the output end of the motor through the storage tank. Multiple stirring blades are fixedly connected to the outer wall of the drive shaft.

[0010] Furthermore, a transmission pipe is fixedly connected to one side of the outer wall of the storage tank, and a threaded pipe is fixedly connected to one end of the transmission pipe.

[0011] Furthermore, a second transmission pipe is fixedly connected to one end of the threaded pipe, one end of the second transmission pipe is fixedly connected to the input end of the second transmission pump, and the output end of the second transmission pump is fixedly connected to one side of the outer wall of the storage tank.

[0012] Furthermore, the first transmission pipe, the second transmission pipe, and the second transmission pump are all located inside the connecting cylinder, and the threaded pipe cover is located on the outside of the inner shell.

[0013] Furthermore, the lower surface of the coil is fixedly connected to the bottom wall of the inner cavity of the inner oil tank, and one side of the outer wall of the coil is fixedly connected to the side wall of the inner cavity of the inner oil tank.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, a wave-shaped coil is set inside the inner oil tank. The conical hopper on the coil can quickly and fully collect the oil inside the inner oil tank. Then, a transfer pump connects the connecting pipe to the coil. The transfer pump evenly transfers the oil to the inner oil tank through multiple nozzles on the outside of the coil, thereby achieving a highly efficient self-circulation effect. This solves the problem of insufficient oil circulation and low heat exchange efficiency caused by relying on paddle stirring to drive the oil flow during the traditional workpiece cooling process, thus improving the practicality of the industrial furnace.

[0016] 2. In this utility model, cold water is injected into the storage tank, and then the cold water inside the storage tank is transferred to the inside of the transfer pipe through the second transfer pump, and then to the inside of the threaded pipe. After the outer wall of the threaded pipe contacts the outer wall of the inner shell, the heat inside the inner shell is directly transferred to the cold water inside the threaded pipe, and then flows back into the storage tank through the first transfer pipe. At the same time, the motor drives the stirring blades on the outer wall of the drive shaft to rotate, thereby realizing heat recovery and uniform mixing of the cold and hot water inside the storage tank. This achieves efficient heating of the cold water inside the storage tank for subsequent use, thereby improving the practicality of the industrial furnace. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a self-circulating oil tank industrial furnace proposed in this utility model.

[0018] Figure 2 This is a schematic diagram of the internal oil tank structure of a self-circulating oil tank industrial furnace proposed in this utility model.

[0019] Figure 3 This is a schematic diagram of the two-part structure of the coil of a self-circulating oil tank industrial furnace proposed in this utility model.

[0020] Figure 4 for Figure 3 Enlarged view of point A in the image;

[0021] Figure 5 This is a schematic diagram of the storage tank structure of a self-circulating oil tank industrial furnace proposed in this utility model.

[0022] Figure 6 This is a schematic diagram of the threaded tube section of a self-circulating oil tank industrial furnace proposed in this utility model.

[0023] Legend:

[0024] 1. Support frame; 2. Outer shell; 3. Connecting flange; 4. Inner shell; 5. Inner oil tank; 6. Transfer pump one; 7. Connecting pipe one; 8. Coil one; 9. Conical hopper; 10. Coil two; 11. Nozzle; 12. Feed pipe; 13. Sealing door; 14. Connecting cylinder; 15. Storage tank; 16. Water inlet pipe; 17. Water outlet pipe; 18. Motor; 19. Drive shaft; 20. Stirring blade; 21. Transfer pipe one; 22. Threaded pipe; 23. Transfer pipe two; 24. Transfer pump two. Detailed Implementation

[0025] 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.

[0026] Reference Figures 1-6This utility model provides an embodiment of a self-circulating oil tank type industrial furnace, including a support frame 1. A shell 2 is fixedly connected to the upper surface of the support frame 1, providing overall structural support and forming a closed shell environment. A connecting flange 3 is fixedly connected to one side of the outer wall of the shell 2, enabling a sealed connection between the shell 2 and other supporting structures or equipment, improving the integration performance and sealing reliability of the equipment. An inner shell 4 is fixedly connected to one side of the outer wall of the connecting flange 3, serving as a heat insulation cavity structure for the furnace body, isolating heat energy and forming a stable heat treatment space. An inner oil tank 5 is fixedly connected to the inner wall of the inner shell 4, containing a cooling medium (such as quenching oil) and providing a stable cooling environment for the workpiece. A circulation component is installed on one side of the inner oil tank 5 to achieve continuous oil recovery and circulating spraying, improving heat exchange efficiency and oil distribution uniformity. A feed pipe 12 is installed on the upper surface of the inner shell 4, automatically feeding external workpieces, improving operational convenience. A sealing door 13 is provided on one side of the inner shell 4, which can be opened and closed for manual handling of workpieces. For oil addition or maintenance operations; the circulation component includes a transfer pump 6, one side of which is located on one side of the inner oil tank 5, serving as the core power component for driving the oil recovery and spray flow; a connecting pipe 7 is fixedly connected to the input end of the transfer pump 6, one end of which penetrates the inner oil tank 5, responsible for drawing cooling oil from the oil tank into the circulation system; a coil 8 is fixedly connected to one end of the connecting pipe 7, the coil 8 employing a corrugated structure to expand the oil collection area, facilitating uniform oil return; the outer wall of the coil 8 is fixedly connected to... A conical hopper 9 is fixedly connected to the inner oil tank 5. The conical hopper 9 is used to guide the oil to flow quickly and centrally into the connecting pipe 7, reducing oil residue and flow resistance. A coil 10 is fixedly connected to the output end of the transfer pump 6. The coil 10 is used to evenly distribute the pressurized oil to different areas in the inner oil tank 5. The outer wall of the coil 10 is installed through the side wall of the inner oil tank 5, which is conducive to the arrangement of the spray pipeline. A nozzle 11 is fixedly connected to the outer wall of the coil 10. Multiple nozzles 11 are distributed to evenly spray the return oil into the inner oil tank 5, thereby forming a highly efficient circulating cooling.

[0027] Specifically, through the above structural combination, the oil in the inner oil tank 5 can be continuously recovered, centrally transported and efficiently sprayed during the cooling process, effectively improving the oil circulation efficiency, cooling uniformity and overall heat exchange performance, overcoming the problem of insufficient cooling by traditional paddle stirring, and improving the practicality and stability of the industrial furnace.

[0028] Reference Figures 1-6A connecting cylinder 14 is fixedly connected to one side of the outer wall of the outer shell 2. A storage tank 15 is fixedly connected to one end of the connecting cylinder 14 for storing cold water for recycling. A water inlet pipe 16 is fixedly connected to the upper surface of the storage tank 15 for injecting cold water into the tank. A water outlet pipe 17 is fixedly connected to the lower side of the outer wall of the storage tank 15 for discharging the heated medium. A motor 18 is fixedly connected to the upper surface of the storage tank 15. A drive shaft 19 is fixedly connected to the output end of the motor 18 through the storage tank 15. Multiple stirring blades 20 are fixedly connected to the outer wall of the drive shaft 19. The stirring blades 20 are used to continuously stir the cold water in the tank to make the cold water temperature uniform and prevent local overheating. A transmission pipe 21 is fixedly connected to one side of the outer wall of the storage tank 15. A threaded pipe 22 is fixedly connected to one end of the transmission pipe 21. The threaded pipe 22 is used to achieve a sealed connection with the inner shell 4 and to lift the pipeline. Stability and maintainability of the connection; One end of the threaded pipe 22 is fixedly connected to the second transmission pipe 23, one end of the second transmission pipe 23 is fixedly connected to the input end of the second transmission pump 24, and the output end of the second transmission pump 24 is fixedly connected to one side of the outer wall of the storage tank 15, for pumping cold water back to the main circulation system; the first transmission pipe 21, the second transmission pipe 23 and the second transmission pump 24 are all set inside the connecting cylinder 14, which achieves the effect of centralized layout, reducing pipeline exposure and improving the overall protection level of the system; the threaded pipe 22 is covered on the outside of the inner shell 4 to form a heat receiving structure and reduce heat loss; the lower surface of the first coil 8 is fixedly connected to the bottom wall of the inner cavity of the inner oil tank 5, which facilitates the centralized absorption and guidance of the bottom oil; one side of the outer wall of the second coil 10 is fixedly connected to the side wall of the inner cavity of the inner oil tank 5, which helps to evenly spray the pumped oil to the side wall area through the nozzle 11.

[0029] Specifically, by setting up the storage tank 15 and the stirring blade 20 in combination, the liquid can be circulated evenly, avoiding excessive temperature difference that would affect the heat recovery effect; the transfer pump 24 and the multi-section pipeline are connected to ensure that the liquid can flow to the storage tank 15 efficiently, improving the heat exchange efficiency; the threaded pipe 22 forms a closed connection with the inner shell 4, which further improves the system's sealing and thermal circulation stability, effectively extending the service life of the equipment and improving the overall performance.

[0030] Working principle: When the industrial furnace is needed, the oil inside the inner oil tank 5 is quickly collected by the conical hopper 9 by the transfer pump 6, thus uniformly and quickly transferring the oil to the coil 8. Then, the oil is transferred to the coil 10 through the connecting pipe 7 via the coil 8. The nozzle 11 on the outside of the coil 10 ensures efficient and uniform circulation of the oil into the inner oil tank 5. At the same time, the inner oil tank 5 generates a lot of waste heat during use. By injecting a large amount of cold water into the storage tank 15, the cold water is transferred to the threaded pipe 22 through the transfer pump 24 via the transfer pipe 23. The hot water is then transported back to the storage tank 15 via the transmission pipe 21 for circulation. The threaded pipe 22 is installed on the outer wall of the inner shell 4, which can absorb the heat generated when the inner oil tank 5 is in use, thereby heating the cold water inside the threaded pipe 22. At the same time, the motor 18 drives the stirring blade 20 on the outside of the drive shaft 19 to stir the water inside the storage tank 15, thereby uniformly mixing the hot water transported back from the threaded pipe 22 with the cold water inside the storage tank 15. This reduces the water circulation time and accelerates the heat recovery speed. The heated hot water can then be discharged for use through the outlet pipe 17.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A self-circulating oil sump industrial furnace comprising a support (1), characterized in that: The bracket (1) is fixedly connected to the upper surface of the outer shell (2), and a connecting flange (3) is fixedly connected to one side of the outer wall of the outer shell (2). An inner shell (4) is fixedly connected to one side of the outer wall of the connecting flange (3). An inner oil groove (5) is fixedly connected to the inner wall of the inner shell (4). A circulation component is installed on one side of the inner oil groove (5). An inlet pipe (12) is installed on the upper surface of the inner shell (4). A sealing door (13) is provided on one side of the inner shell (4). The circulation assembly includes a first transfer pump (6), one side of the outer wall of the first transfer pump (6) is disposed on one side of the inner oil tank (5), the input end of the first transfer pump (6) is fixedly connected to a first connecting pipe (7), one end of the first connecting pipe (7) is disposed through the inside of the inner oil tank (5), one end of the first connecting pipe (7) is fixedly connected to a first coil (8), the outer wall of the first coil (8) is fixedly connected to a conical bucket (9), the output end of the first transfer pump (6) is fixedly connected to a second coil (10), the outer wall of the second coil (10) is disposed through the side wall of the inner oil tank (5), and the outer wall of the second coil (10) is fixedly connected to a nozzle (11).

2. A self-circulating oil sump industrial furnace as claimed in claim 1, wherein: A connecting cylinder (14) is fixedly connected to one side of the outer wall of the outer shell (2), and a storage tank (15) is fixedly connected to one end of the connecting cylinder (14).

3. A self-circulating oil bath industrial furnace according to claim 2, characterized in that: A water inlet pipe (16) is fixedly connected to the upper surface of the storage tank (15), and a water outlet pipe (17) is fixedly connected to the lower side of the outer wall of the storage tank (15).

4. A self-circulating oil bath industrial furnace according to claim 3, characterized in that: A motor (18) is fixedly connected to the upper surface of the storage tank (15). The output end of the motor (18) is fixedly connected to a drive shaft (19) through the storage tank (15). Multiple stirring blades (20) are fixedly connected to the outer wall of the drive shaft (19).

5. A self-circulating oil sump industrial furnace as claimed in claim 2, wherein: A transmission pipe (21) is fixedly connected to one side of the outer wall of the storage tank (15), and a threaded pipe (22) is fixedly connected to one end of the transmission pipe (21).

6. A self-circulating oil bath industrial furnace according to claim 5, characterized in that: One end of the threaded pipe (22) is fixedly connected to the second transmission pipe (23), one end of the second transmission pipe (23) is fixedly connected to the input end of the second transmission pump (24), and the output end of the second transmission pump (24) is fixedly connected to one side of the outer wall of the storage tank (15).

7. A self-circulating oil bath industrial furnace according to claim 6, characterized in that: The first transmission pipe (21), the second transmission pipe (23) and the second transmission pump (24) are all located inside the connecting cylinder (14), and the threaded pipe (22) is covered on the outside of the inner shell (4).

8. A self-circulating oil sump industrial furnace as claimed in claim 1, wherein: The lower surface of the first coil (8) is fixedly connected to the bottom wall of the inner cavity of the inner oil tank (5), and one side of the outer wall of the second coil (10) is fixedly connected to the side wall of the inner cavity of the inner oil tank (5).

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