Material circulation type heat treatment device

Abstract

The utility model provides a kind of material loop formula heat treatment device, including rack, furnace body, lifting assembly and heating assembly;Furnace body is obliquely arranged on rack;Furnace body has feed cavity and the heating cavity of being sleeved in the outside of feed cavity;Feed cavity top end is communicated with the top end of heating cavity and is arranged;Furnace body is equipped with the inlet of being communicated with the bottom end of feed cavity, and is equipped with the discharge port of being communicated with the top end of heating cavity;Lifting assembly is arranged on furnace body, and lifting part is located in feed cavity;Heating assembly is around and is arranged at the top position of furnace body, and is used to heat heating cavity;Wherein, material is transferred to the top of feed cavity by lifting assembly and enters into heating cavity and is heated;Heated material is exchanged with the material of ascending in feed cavity in downlink process.This material loop formula heat treatment device provided by the utility model can efficiently recycle the waste heat carried by hot material for cold material preheating, avoid waste heat with material discharge or furnace body heat loss.

Description

Technical Field

[0001] This utility model belongs to the technical field of heat treatment heating furnaces, and specifically relates to a material recycling heat treatment device. Background Technology

[0002] Heating furnaces are core equipment used for heat treatment of materials in industrial production. Their main function is to enable materials to achieve the expected physical, chemical, or mechanical properties through a controllable heating, heat preservation, and cooling process, providing qualified pre-treated materials for subsequent production processes such as molding, processing, and assembly.

[0003] In existing technologies, conventional continuous heating furnaces generally suffer from serious heat waste during long-term use. A large amount of residual heat carried by the high-temperature materials after heat treatment is not effectively recovered and utilized, but is directly discharged with the materials or lost through heat dissipation in the furnace body, resulting in persistently high energy consumption. Furthermore, the heating furnace has a slow heating rate; newly introduced cold materials require a long journey or time to gradually heat from room temperature to the process temperature. In addition, the material cooling process is also relatively slow. Cooling of high-temperature materials after heat treatment relies on natural heat dissipation or simple cooling structures, resulting in low cooling efficiency and further increasing the overall processing time, thus limiting production scale and efficiency. Utility Model Content

[0004] This utility model provides a material recycling heat treatment device, which aims to reduce heat waste and improve the efficiency of material heating and cooling.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A material circulation heat treatment device is provided, comprising a frame, a furnace body, a lifting assembly, and a heating assembly; the furnace body is inclinedly mounted on the frame; the furnace body has a feeding chamber and a heating chamber sleeved outside the feeding chamber; the top of the feeding chamber is connected to the top of the heating chamber; the furnace body has an inlet communicating with the bottom of the feeding chamber and an outlet communicating with the top of the heating chamber; the lifting assembly is mounted on the furnace body and has a lifting section located in the feeding chamber; the heating assembly is arranged around the top of the furnace body and is used to heat the heating chamber; wherein, the material is transferred by the lifting assembly to the top of the feeding chamber and enters the heating chamber for heating; the heated material exchanges heat with the upward-moving material in the feeding chamber during its downward movement.

[0006] In one possible implementation, the furnace body includes an outer pipe and an inner pipe; the bottom end of the outer pipe is open; the outer pipe is for the installation of heating components; the inner pipe is coaxially arranged with the outer pipe, one end of the inner pipe extends into the outer pipe through the open end of the outer pipe, and the top end of the inner pipe is open; the cavity of the inner pipe is a feeding cavity; a heating cavity is formed between the inner pipe and the outer pipe.

[0007] In some embodiments, the lifting assembly includes a driver, a rotating shaft, and helical blades; the driver is fixed at the bottom end of the inner pipe; the rotating shaft is rotatably disposed in the feed chamber along the axial direction of the inner pipe, and one end is connected to the driver; the helical blades extend axially along the rotating shaft and are disposed on the side wall of the rotating shaft, forming a lifting section.

[0008] For example, the material recycling heat treatment apparatus further includes a feeding assembly, which includes an auger and a hopper; the auger is horizontally arranged, has an outlet communicating with the feed inlet, and has an inlet; the hopper is connected to the inlet of the auger.

[0009] For example, a feed valve is installed between the hopper and the inlet. The feed valve is used to control the feeding speed and feed amount of the material.

[0010] In one possible implementation, a discharge port is provided at the bottom of the outer pipe, and a material bin is provided on the frame, with the material bin connected to the discharge port.

[0011] In some embodiments, the material hopper is equipped with a discharge valve for discharging material from the heated chamber.

[0012] For example, the frame is provided with a support frame, which is fixedly connected to the end of the auger away from the feed inlet.

[0013] In one possible implementation, the heating assembly includes a heating jacket and a heater; the heating jacket is fitted onto the furnace body and is used to heat the heating chamber; the heater is mounted on the frame and connected to the heating jacket; the heater is used to heat the heating jacket.

[0014] The beneficial effects of the material recycling heat treatment device provided by this utility model are as follows: Compared with the prior art, this utility model sets up a furnace body inclined to the frame, with a feeding chamber and a heating chamber sleeved outside the feeding chamber and connected to the feeding chamber at its top. Through the lifting component located in the feeding chamber and the heating component surrounding the top of the furnace body, the cold material is lifted by the lifting component to the top of the feeding chamber and enters the heating chamber. After heating, the hot material exchanges heat with the cold material rising in the feeding chamber during its descent in the heating chamber. This efficiently recovers the waste heat carried by the hot material for preheating the cold material, avoiding waste heat loss with the material discharge or the furnace body heat dissipation. It also eliminates the need for the cold material to start heating from room temperature. With the targeted heating of the heating chamber by the heating component, the heating time is significantly shortened and energy consumption is reduced. Simultaneously, the inclined furnace body uses gravity to assist the hot material in its descent, combined with the active feeding of the lifting component, ensuring the continuity of material circulation and heat treatment. This effectively solves the problems of serious waste heat waste, slow heating, high energy consumption, and limited production efficiency in existing continuous heating furnaces. Attached Figure Description

[0015] Figure 1 A three-dimensional structural schematic diagram of the material recycling heat treatment device provided in the embodiment of this utility model; Figure 2 This is a front view of the material recycling heat treatment apparatus provided in an embodiment of the present invention; Figure 3 This is a front view of the lifting component used in an embodiment of the present invention.

[0016] In the diagram: 10. Frame; 11. Support frame; 20. Furnace body; 21. External pipe; 22. Internal pipe; 30. Lifting assembly; 31. Driver; 32. Rotary shaft; 33. Spiral blade; 40. Heating assembly; 41. Heating jacket; 42. Heater; 50. Feeding assembly; 51. Screw conveyor; 52. Hopper; 53. Feed valve; 60. Material bin; 61. Discharge valve. Detailed Implementation

[0017] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0018] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or indirectly on the other element. It should be understood that the terms "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] Please refer to the following: Figures 1 to 3 The material recycling heat treatment device provided by this utility model will now be described. The material recycling heat treatment device includes a frame 10, a furnace body 20, a lifting assembly 30, and a heating assembly 40. The furnace body 20 is inclinedly mounted on the frame 10. The furnace body 20 has a feeding chamber and a heating chamber sleeved outside the feeding chamber. The top of the feeding chamber is connected to the top of the heating chamber. The furnace body 20 has an inlet communicating with the bottom of the feeding chamber and an outlet communicating with the top of the heating chamber. The lifting assembly 30 is mounted on the furnace body 20 and has a lifting section located in the feeding chamber. The heating assembly 40 is arranged around the top of the furnace body 20 and is used to heat the heating chamber. The material is transferred by the lifting assembly 30 to the top of the feeding chamber and enters the heating chamber for heating. During the downward movement of the heated material, it exchanges heat with the material moving upward in the feeding chamber.

[0020] It should be noted that the frame 10 is the basic support component; the furnace body 20 is installed at an angle on the frame 10, and the furnace body 20 has a feeding chamber inside, and the heating chamber is sleeved on the outside of the feeding chamber, and the top ends of the two are connected to each other; the furnace body 20 has an inlet that communicates with the bottom end of the feeding chamber and an outlet that communicates with the top end of the heating chamber; the lifting component 30 is installed on the furnace body 20, and its lifting part is located inside the feeding chamber; the heating component 40 is arranged around the top of the furnace body 20, corresponding to the heating chamber area.

[0021] Cold material enters the feeding chamber through the inlet. The lifting component 30 lifts the cold material in the feeding chamber upwards to the top, and then enters the heating chamber through the chamber connection. The heating component 40 heats the heating chamber to bring the material to the process temperature. Because the furnace body 20 is tilted, the hot material moves downwards along the heating chamber. During this process, it exchanges heat with the cold material moving upwards in the feeding chamber through the chamber wall. Finally, the hot material is discharged from the outlet, forming a complete processing flow.

[0022] Compared with the prior art, the material recycling heat treatment device provided by this utility model features a furnace body 20 inclined to the frame 10. The furnace body 20 has a feeding chamber and a heating chamber sleeved outside the feeding chamber and connected to it at its top. A lifting assembly 30 located in the feeding chamber and a heating assembly 40 surrounding the top of the furnace body 20 work together with the furnace body 20 to allow cold material to rise through the lifting assembly 30 to the top of the feeding chamber and enter the heating chamber. After heating, the hot material exchanges heat with the cold material rising in the feeding chamber as it descends through the heating chamber. This efficiently recovers the waste heat carried by the hot material for preheating the cold material, preventing waste heat from being discharged with the material or lost through heat dissipation from the furnace body 20. It also enables cold materials to be heated from room temperature to zero without starting from room temperature. With the targeted heating of the heating chamber by the heating component 40, the heating time is greatly shortened and energy consumption is reduced. At the same time, the tilting furnace body 20 uses gravity to assist the hot materials to descend, and combined with the active feeding of the lifting component 30, the continuity of material circulation and heat treatment is ensured. This effectively solves the problems of serious waste heat, slow heating, high energy consumption and limited production efficiency of existing continuous heating furnaces.

[0023] Please see Figure 2 and Figure 3 The furnace body 20 includes an outer pipe 21 and an inner pipe 22; the bottom end of the outer pipe 21 is open; the outer pipe 21 is for the installation of the heating component 40; the inner pipe 22 is coaxially arranged with the outer pipe 21, one end of the inner pipe 22 extends into the outer pipe 21 through the open end of the outer pipe 21, and the top end of the inner pipe 22 is open; the cavity of the inner pipe 22 is a feeding cavity; a heating cavity is formed between the inner pipe 22 and the outer pipe 21.

[0024] It should be noted that the furnace body 20 is composed of an outer pipe 21 and an inner pipe 22, which are coaxially arranged; the bottom end of the outer pipe 21 is open, and the heating component 40 is installed on the outside of the outer pipe 21; one end of the inner pipe 22 extends into the interior of the outer pipe 21 through the bottom opening of the outer pipe 21, and the top end of the inner pipe 22 is open. The cavity of the inner pipe 22 is the feeding cavity, and the gap between the inner pipe 22 and the outer pipe 21 is the heating cavity.

[0025] Cold material enters the feeding chamber through the inlet at the bottom of the inner pipe 22. The lifting assembly 30 transports the cold material to the open end of the inner pipe 22, and then it enters the heating chamber formed by the gap between the inner and outer pipes 21. The heating assembly 40 transfers heat to the heating chamber through the outer pipe 21, raising the temperature of the material. The hot material descends along the gap, exchanges heat with the cold material rising in the feeding chamber through the wall of the inner pipe 22, and finally exits from the outlet at the top of the heating chamber.

[0026] The coaxial nested structure allows the heating chamber to surround the feeding chamber, increasing the contact area between hot and cold materials and improving the uniformity of heat exchange. The inner and outer pipes 21 are coaxially arranged to avoid chamber displacement, reduce the risk of material accumulation, and enhance structural stability. The open outer pipe 21 facilitates the installation and adjustment of the inner pipe 22, while providing a stable carrier for the heating component 40, simplifying the assembly and maintenance process.

[0027] Please see Figure 2 and Figure 3 The lifting assembly 30 includes a driver 31, a rotating shaft 32, and a spiral blade 33. The driver 31 is fixed at the bottom of the inner pipe 22. The rotating shaft 32 is rotatably disposed in the feed chamber along the axial direction of the inner pipe 22, and one end is connected to the driver 31. The spiral blade 33 extends along the axial direction of the rotating shaft 32 and is disposed on the side wall of the rotating shaft 32, forming a lifting section.

[0028] It should be noted that the lifting assembly 30 includes a driver 31, a rotating shaft 32, and a spiral blade 33; the driver 31 is fixedly installed on the outer side of the bottom end of the inner pipe 22; the rotating shaft 32 is axially arranged in the inner pipe 22 cavity, i.e., in the feed chamber, with one end connected to the output end of the driver 31 and the other end extending to the vicinity of the top end of the inner pipe 22; the spiral blade 33 is axially fixed to the side wall of the rotating shaft 32, forming the lifting part.

[0029] After the driver 31 is started, it drives the rotating shaft 32 to rotate axially along the inner pipe 22. The rotating shaft 32 synchronously drives the spiral blades 33 on the side wall to rotate. The spiral blades 33 generate a pushing force on the cold material at the bottom of the feeding chamber through their own spiral structure, and continuously transport the cold material from the bottom of the inner pipe 22 upward until it reaches the opening at the top of the inner pipe 22 and is sent into the heated chamber between the inner and outer pipes 21.

[0030] The spiral blades 33 ensure uniform upward movement of materials, preventing jamming and spillage, and improving conveying stability; the driver 31 directly drives the rotating shaft 32, reducing power loss, and the speed can be adjusted as needed to match the material conveying volume, improving power transmission efficiency; the components are integrated inside the inner pipe 22, without occupying external space, and are compatible with the coaxial furnace body 20 structure, making the overall device more compact.

[0031] Please see Figure 1 and Figure 2 The material recycling heat treatment device also includes a feeding component 50, which includes an auger 51 and a hopper 52. The auger 51 is horizontally arranged and has an outlet connected to the feed inlet and an inlet. The hopper 52 is connected to the inlet of the auger 51.

[0032] It should be noted that the feeding assembly 50 includes an auger 51 and a hopper 52. The auger 51 is horizontally positioned, with one end of its outlet connected to the feed inlet of the furnace body 20 and the other end having an inlet. The hopper 52 is installed directly above the inlet of the auger 51, and its outlet end is connected to the inlet of the auger 51. The material is temporarily stored in the hopper 52. After the auger 51 is started, its internal spiral structure rotates, and the material in the hopper 52 enters the inlet of the auger 51 under the action of gravity. It is then horizontally conveyed to the outlet of the auger 51 through the spiral structure, and then sent to the feed inlet of the furnace body 20 through the outlet, finally entering the feeding chamber.

[0033] The hopper 52 temporarily stores materials, extending the feeding interval and preventing empty feeding chambers and dry burning of heating components 40 due to untimely manual feeding; the auger 51 conveys materials at a uniform speed to prevent material impact and accumulation from causing blockage at the inlet, ensuring uniform feeding of lifting components 30; reducing manual intervention, improving the automation level of the device, and adapting to the needs of continuous industrial production.

[0034] Please see Figure 2 and Figure 3 A feed valve 53 is provided between the hopper 52 and the inlet. The feed valve 53 is used to control the feeding speed and feed amount of the material.

[0035] It should be noted that the feed valve 53 is located on the connecting channel between the hopper 52 and the inlet of the auger 51, with one end connected to the discharge end of the hopper 52 and the other end connected to the inlet of the auger 51, and its opening degree is adjustable. By adjusting the opening degree of the feed valve 53, the speed and total amount of material entering the auger 51 from the hopper 52 are controlled, so that the feed rate matches the conveying capacity of the component 30 and the heating efficiency of the heating chamber, avoiding overfeeding or underfeeding. The feed parameters can be adjusted according to the material process requirements to achieve precise material control; avoid overfeeding causing overload of the auger 51, or underfeeding causing empty material in the feed chamber, protecting the equipment and reducing energy waste; the feed rate can be changed without adjusting the speed of the auger 51, making operation flexible and convenient for production switching.

[0036] Please see Figure 2 and Figure 3 The bottom end of the external pipe 21 is provided with a discharge port, and the frame 10 is provided with a material bin 60, which is connected to the discharge port.

[0037] It should be noted that a discharge port is opened on the bottom side wall of the outer pipe 21; a material bin 60 is fixedly installed on the frame 10, and the inlet of the material bin 60 is connected to the discharge port of the outer pipe 21 through a pipe. The material bin 60 is used to temporarily store materials. The hot material in the heating chamber flows down to the bottom of the outer pipe 21 and enters the material bin 60 through the discharge port for temporary storage. After the subsequent cooling or transfer process is ready, it will be processed in a subsequent manner.

[0038] The material silo 60 can avoid the safety risks caused by the direct discharge of hot materials and improve operational safety; the temporary storage in the material silo 60 can delay the loss of residual heat and provide conditions for subsequent residual heat recovery; as a process buffer, it can match the rhythm of hot material discharge with subsequent processing, avoid the disconnect between the front and back processes, and ensure continuous production.

[0039] Please see Figure 2 and Figure 3 The material silo 60 is equipped with a discharge valve 61, which is used to discharge the material in the heated chamber.

[0040] It should be noted that the discharge valve 61 is installed on the discharge channel of the material silo 60, typically at the bottom or side wall of the silo 60, and controls the connection between the material silo 60 and the outside world. After hot material enters the material silo 60, the discharge valve 61 is closed for temporary storage. When subsequent processes require material, the opening and closing degree of the discharge valve 61 is adjusted to control the speed and timing of the hot material discharge from the material silo 60, ensuring the discharge volume matches the processing capacity of subsequent processes. The discharge valve 61 prevents material accumulation and blockage in the material silo 60 or excessively rapid discharge that could lead to backlog in subsequent processes, ensuring a stable discharge rhythm. It can be dynamically adjusted according to the front-end heating efficiency and the back-end processing rhythm to adapt to the overall production process. Closing the valve prevents hot material from overflowing during temporary storage and also prevents contamination of the material by debris, ensuring processing quality.

[0041] Please see Figure 2 The frame 10 is provided with a support frame 11, which is fixedly connected to the end of the auger 51 away from the feed inlet.

[0042] It should be noted that the support frame 11 is fixedly installed on the frame 10, and its top end is fixedly connected to the bottom or side wall of the end of the auger 51 away from the feed inlet of the furnace body 20; the end of the auger 51 near the feed inlet is connected to the feed inlet of the furnace body 20 through the outlet, forming a two-point support structure. The support frame 11 provides support for the end of the auger 51 away from the feed inlet, and together with the connection point between the end of the auger 51 near the feed inlet and the furnace body 20, maintains the horizontal posture of the auger 51; when the auger 51 is working, the support frame 11 counteracts the downward pull generated by the weight of the auger 51 itself and the material, preventing the auger 51 from tilting. This prevents the auger 51 from tilting or vibrating due to single-end support, enhances structural stability, prevents material conveying deviation, reduces mechanical wear caused by bending of the auger 51, extends the service life of the equipment, and ensures that the conveying path of the auger 51 is straight, ensuring that the material accurately enters the feed inlet of the furnace body 20 and avoiding feeding deviation.

[0043] Please see Figure 1 and Figure 2 The heating assembly 40 includes a heating sleeve 41 and a heater 42; the heating sleeve 41 is fitted onto the furnace body 20 and is used to heat the heating chamber; the heater 42 is mounted on the frame 10 and connected to the heating sleeve 41; the heater 42 is used to heat the heating sleeve 41.

[0044] It should be noted that the heating assembly 40 includes a heating jacket 41 and a heater 42. The heating jacket 41 is fitted onto the outside of the furnace body 20, corresponding to the heating chamber area. The heater 42 is fixedly installed on the frame 10 and connected to the heating jacket 41 via wires or pipes. After the heater 42 is started, it transfers heat to the heating jacket 41 through the connecting structure. The heating jacket 41 fits snugly against the furnace body 20, uniformly transferring heat to the heating chamber to heat the materials inside and meet the process temperature requirements. The tight fit between the heating jacket 41 and the furnace body 20 ensures uniform heat transfer, avoiding local overheating or uneven heating and guaranteeing the quality of material processing. The separate installation of the heater 42 and the heating jacket 41 facilitates disassembly and replacement in case of heater 42 failure, reducing maintenance difficulty. The heater 42 is located on the frame 10, facilitating the integration of a temperature control assembly, allowing for real-time adjustment of heating power, and further reducing energy consumption in conjunction with waste heat recovery.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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 material recycling heat treatment device, characterized in that, include: frame; The furnace body is inclined and mounted on the frame; The furnace body has a feeding chamber and a heating chamber sleeved outside the feeding chamber; The top of the feeding chamber is connected to the top of the heating chamber; the furnace body is provided with an inlet that communicates with the bottom of the feeding chamber and an outlet that communicates with the top of the heating chamber. A lifting assembly, disposed on the furnace body, has a lifting section located in the feed chamber; A heating assembly is disposed around the top of the furnace body and is used to heat the heated chamber; The material is conveyed to the top of the feeding chamber by the lifting component and enters the heating chamber for heating; the heated material exchanges heat with the material moving upward in the feeding chamber during its downward movement.

2. The material recycling heat treatment apparatus as described in claim 1, characterized in that, The furnace body includes: An external pipe with an opening at the bottom; the external pipe is used for installing the heating assembly. An inner pipe is coaxially arranged with the outer pipe. One end of the inner pipe extends into the outer pipe through an opening in the outer pipe. The top of the inner pipe is also open. The cavity of the inner pipe is the feed cavity. The heating cavity is formed between the inner pipe and the outer pipe.

3. The material recycling heat treatment apparatus as described in claim 2, characterized in that, The enhancement components include: The actuator is fixed at the bottom end of the inner pipe; A rotating shaft is rotatably disposed within the feed chamber along the axial direction of the inner pipe, and one end is connected to the driver. A helical blade extends axially along the shaft and is disposed on the side wall of the shaft, forming the lifting section.

4. The material recycling heat treatment apparatus as described in claim 1, characterized in that, The material recycling heat treatment device further includes a feeding assembly, which includes: The auger is horizontally positioned and has an outlet connected to the feed inlet, as well as an inlet; The hopper is connected to the inlet of the auger.

5. The material recycling heat treatment apparatus as described in claim 4, characterized in that, A feed valve is provided between the hopper and the inlet, and the feed valve is used to control the feeding speed and feeding amount of the material.

6. The material recycling heat treatment apparatus as described in claim 2, characterized in that, The bottom end of the external pipe is provided with a discharge port, and the frame is provided with a material bin, which is connected to the discharge port.

7. The material recycling heat treatment apparatus as described in claim 6, characterized in that, The material silo is equipped with a discharge valve, which is used to discharge the material in the heated chamber.

8. The material recycling heat treatment apparatus as described in claim 4, characterized in that, The frame is provided with a support frame, which is fixedly connected to the end of the auger away from the feed inlet.

9. The material recycling heat treatment apparatus according to any one of claims 1-8, characterized in that, The heating component includes: A heating jacket is fitted onto the furnace body and is used to heat the heating chamber; A heater is mounted on the frame and connected to the heating jacket; the heater is used to heat the heating jacket.

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