Continuous roller tempering furnace
By installing a spiral pusher plate and a gas circulation assembly inside the drum tempering furnace, the problems of small-sized parts transportation and repeated heating of the mesh belt are solved, achieving low-energy continuous production and material self-cleaning effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG SHANGDING ENVIRONMENTAL PROTECTION TECHNOLOGY CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-05-19
AI Technical Summary
In existing technologies, small parts such as spheres cannot be directly transported, which increases the furnace's energy consumption. Furthermore, the mesh belt transport requires repeated heating, so energy consumption cannot be reduced.
By installing a spiral pusher plate inside the drum, continuous material feeding is achieved, and hot air utilization is optimized through the gas flow channel and circulation component inside the drum, reducing repeated heating.
It achieves low-energy continuous production, reduces secondary heating of non-material parts, lowers energy consumption, and realizes self-cleaning of material surfaces through the design of spiral pusher plate.
Smart Images
Figure CN224258694U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of heat treatment equipment, and in particular to a continuous drum tempering furnace. Background Technology
[0002] Metals generally require tempering after heat treatment to eliminate internal stress in metal parts, improve material toughness, and ensure the geometric dimensions of the workpiece. In light of the current green development concept, how to achieve low-energy consumption, continuous automated production to reduce enterprise production costs and labor intensity is an urgent problem for enterprises to solve.
[0003] Chinese patent CN206736310U discloses a roller-type high-efficiency energy-saving tempering furnace, including a tempering furnace body, transfer rollers, heating components, thermocouples, a hot air circulation mechanism, a transmission system, and a feeding mechanism. The tempering furnace body has an internal furnace chamber for heat treatment of workpieces. Several transfer rollers are evenly arranged inside the furnace chamber and are driven to rotate by the transmission system. The transfer rollers longitudinally penetrate both side walls of the tempering furnace body. Independently controllable heating components are evenly arranged longitudinally above and below the transfer rollers. A hot air circulation mechanism is located at the upper end of the tempering furnace body to fully mix the air atmosphere inside the furnace chamber. Thermocouples are installed between adjacent hot air circulation mechanisms to monitor the temperature inside the furnace chamber. The transmission system drives the transfer rollers to rotate, and the conveyor belt of the feeding mechanism delivers the workpiece to the feeding end of the tempering furnace body and pushes the workpiece onto the transfer rollers. The workpiece is then conveyed into the furnace chamber for heat treatment via the transfer rollers.
[0004] However, this technical solution uses a roller structure to transfer materials. For small parts, such as spheres, direct transfer is not possible, and a material frame is required to support them. Therefore, the material frame will experience cooling and reheating during the loading and unloading process, which seriously affects the energy consumption of the furnace.
[0005] Chinese patent CN206654943U discloses a mesh belt tempering furnace, comprising a furnace body and a mesh belt. The mesh belt passes through the furnace body, with its inlet and outlet ends located outside the furnace body. Burners are evenly arranged on both sides of the furnace body, using methanol as fuel. A tensioning mechanism is installed inside the furnace body, comprising a rotating shaft and a motor for driving the shaft. Rollers for supporting the mesh belt are sleeved on the rotating shaft, and the rollers are eccentrically positioned relative to the shaft. This mesh belt tempering furnace, by employing a tensioning mechanism with eccentrically positioned rollers, allows the steel balls to advance in a wave-like pattern along the conveying direction during tempering, tumbling as they move. This results in more uniform heating and significantly improves tempering quality.
[0006] The above technical solution can transport parts via a mesh belt, but the mesh belt needs to be repeatedly heated, and its weight is greater than that of the product, which means that the energy consumption of the tempering furnace cannot be reduced. Utility Model Content
[0007] The purpose of this invention is to address the shortcomings of existing technologies by providing a continuous drum tempering furnace. By setting a spiral pusher plate inside the drum, materials are continuously pushed forward, thereby achieving continuous tempering production. At the same time, the drum always maintains a certain temperature inside the furnace, solving the technical problem in existing technologies where non-material components need to be cooled and reheated, resulting in wasted energy.
[0008] To achieve the above objectives, this utility model provides the following technical solution:
[0009] A continuous drum tempering furnace, comprising:
[0010] The furnace body has an internal furnace chamber for continuous heat treatment, and the furnace body has a feed inlet and a discharge outlet at both ends.
[0011] A heating element is disposed inside the furnace body to change the temperature inside the furnace body;
[0012] It also includes: a drum, which is rotatably disposed inside the furnace body, forming a gas flow channel between the drum and the furnace body, and having a plurality of furnace lining holes evenly distributed on the drum; the inner wall of the drum is provided with a spiral pusher plate;
[0013] A drive assembly that drives the roller to rotate.
[0014] As an improvement, the spacing H between adjacent spiral blades of the spiral pusher plate is greater than 3 times the outline size of the material.
[0015] As an improvement, the heating assembly includes:
[0016] Heating elements, wherein a plurality of heating elements are symmetrically arranged along the two side walls of the furnace body;
[0017] And a protective cover, which is used to protect the end of the heating element that extends out of the furnace body.
[0018] As an improvement, the heating element includes a cold section and a heating section, the cold section being embedded in the side wall of the furnace body and having one end extending out of the furnace body; the heating section being arranged circumferentially along the inner wall of the furnace chamber.
[0019] As an improvement, limiting components are also provided at both ends of the roller;
[0020] The limiting assembly includes a support roller mounted on the outer wall of the roller and a positioning roller rotatably mounted on the bracket; the positioning roller abuts against both sides of the support roller.
[0021] As an improvement, the spiral pusher plate is provided with several through holes.
[0022] As an improvement, the bottom of the furnace body is provided with several ash discharge ports along its axial direction, the ash discharge ports are connected to the interior of the furnace body, and the ends of the ash discharge ports are provided with ash discharge furnace doors.
[0023] As an improvement, the drive assembly includes a drive motor mounted on the bracket and a sprocket assembly. The sprocket assembly includes a large sprocket mounted on one end of the roller, a small sprocket connected to the output end of the drive motor, and a transmission chain connecting the large sprocket and the small sprocket.
[0024] As an improvement, a circulation component is also included, which is disposed in the furnace body to circulate and guide the gas inside the furnace body.
[0025] As an improvement, the loop component includes:
[0026] A flow guide shroud is installed above the drum and connected to the top of the furnace chamber; the bottom of the flow guide shroud abuts against the outer wall of the drum; and several ventilation holes are provided in the middle of the flow guide shroud.
[0027] And a circulating fan, which is installed on the top of the furnace body, with its blades located between the guide shroud and the furnace body.
[0028] The beneficial effects of this utility model are as follows:
[0029] (1) This utility model achieves continuous tempering production of materials by adopting a roller structure. At the same time, the roller structure is relatively light, which greatly saves energy consumed by the secondary heating of non-material parts that are repeatedly heated compared with the traditional mesh belt conveyor structure or roller conveyor structure, thereby achieving low-energy continuous production.
[0030] (2) This utility model uses a pusher plate inside the drum to carry the material forward in a spiral. During the material turning process, the material is thrown down to clean the impurities on the surface of the material.
[0031] (3) This utility model achieves automatic collection and periodic discharge of oxide scale in the furnace body by setting an ash discharge port at the bottom of the furnace body.
[0032] (4) By setting a limiting component, the axial position of the roller is rolled and limited, thereby achieving precise positioning of the roller position.
[0033] (5) This utility model circulates the gas in the furnace body through the circulation component, ensuring that the hot air passes through the material first, and is then guided by the top circulation fan and the guide hood, so that the airflow passing through the material is reheated and acts on the parts, fully heating the parts.
[0034] In summary, this utility model has the advantages of low energy consumption and self-cleaning parts. Attached Figure Description
[0035] Figure 1 This is a cross-sectional view of the overall structure of this utility model;
[0036] Figure 2 This is a right-side view of the present invention;
[0037] Figure 3 This is a longitudinal sectional view of the overall structure of this utility model;
[0038] Figure 4 This is a schematic diagram of the roller structure of this utility model;
[0039] Figure 5 This utility model Figure 1 Enlarged view of a portion of point A in the middle;
[0040] Figure 6 This is a schematic diagram of the heating element of this utility model. Detailed Implementation
[0041] 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.
[0042] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are 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 component 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0043] Example 1
[0044] like Figures 1-4 As shown, this embodiment provides a continuous drum tempering furnace, including:
[0045] Furnace body 1, the furnace body 1 has a continuous heat treatment furnace chamber inside, and the furnace body 1 has a feed port 11 and a discharge port 12 at both ends respectively; the furnace body 1 has a support 13 at the bottom;
[0046] Above the discharge port 12, there is also an inspection port 14 and an observation port 15, which facilitate the internal inspection of the furnace body 1 and the observation of the internal material status during the production process.
[0047] The discharge port 12 is located at the bottom of one side of the furnace body 1, which facilitates the discharge of materials by their own weight;
[0048] The feed inlet 11 is inclined and located on the other side of the furnace body 1 near the center. The end of the feed inlet 11 is also provided with a buffer pad 16 to reduce the impact of the material on the furnace body 1 during the feeding process, avoid material collision, reduce the impact force of the roller 3, and improve the service life of the roller 3.
[0049] Heating component 2 is disposed inside the furnace body 1 to change the temperature inside the furnace body 1; the heating component 2 can be selected from heating methods such as electric heating and gas heating.
[0050] It also includes: a roller 3, which is rotatably disposed inside the furnace body 1, forming a gas flow channel 10 between the roller 3 and the furnace body 1, and having a plurality of furnace chamber holes 31 evenly distributed on the roller 3; and a spiral pusher plate 32 is provided on the inner wall of the roller 3.
[0051] Drive component 4 drives the roller 3 to rotate.
[0052] The furnace liner hole 31 is used for gas flow and to discharge impurities generated during the heat treatment process; the two ends of the drum 3 are supported by support wheels, so that the drum 3 rotates inside the furnace body 1.
[0053] Preferably, the spacing H between adjacent spiral blades of the spiral pusher plate 32 is greater than 3 times the outline size of the material.
[0054] Taking the tempering process of steel balls as an example, during the processing of steel balls, the spacing H is greater than the diameter of three steel balls to avoid material jamming during the pushing process. For example, when processing steel balls with a diameter of 100mm, the spacing H needs to be greater than 300mm. Of course, the specific spacing H can be designed according to the maximum outline size of the material to be applicable to a wider range of material processing. For example, if the production line can produce steel balls with a maximum diameter of 100mm, then when the spacing H is greater than 300mm, steel balls with a diameter smaller than 100mm can be produced through one production line without material jamming.
[0055] It should be noted that by setting the spiral pusher plate 32, the steel balls are pushed forward in a spiral shape to achieve continuous tempering treatment. At the same time, during the pushing process, the steel balls are continuously thrown inside the drum 3, which knocks off the oxide scale and other impurities on the surface of the steel balls, thus cleaning the surface of the steel balls. The fallen oxide scale is discharged through the bottom ash discharge furnace door.
[0056] Preferably, the spiral pusher plate 32 has several through holes for gas flow, impurity drop, etc., to improve the uniformity of gas contact with materials and prevent oxide scale from adhering to the surface of the pusher plate, thus affecting the heat treatment quality.
[0057] Furthermore, such as Figure 3 As shown, the bottom of the furnace body 1 is provided with several ash discharge ports 17 along its axial direction. The ash discharge ports 17 are connected to the interior of the furnace body 1. The ends of the ash discharge ports 17 are provided with ash discharge furnace doors, which are used to discharge dust, oxide scale and other impurities generated during the heat treatment process.
[0058] Furthermore, it also includes several thermocouples installed on the furnace body, with one end of the thermocouple extending into the furnace chamber and the bottom end of the thermocouple close to the outer wall of the drum.
[0059] Example 2
[0060] like Figure 3 , Figure 6 As shown, components that are the same as or corresponding to those in Embodiment 1 are referred to using the same reference numerals as in Embodiment 1. For simplicity, only the differences from Embodiment 1 are described below. The difference between Embodiment 2 and Embodiment 1 is as follows:
[0061] In this embodiment, the heating component 2 includes:
[0062] Heating element 21, a plurality of heating elements 21 are arranged along the axial direction of the furnace body 1; a plurality of heating elements 21 are symmetrically arranged along the two side walls of the furnace body 1; the heating element 21 is preferably a heating tube;
[0063] And a protective cover 22, which is used to protect the end of the heating element 21 that extends out of the furnace body 1.
[0064] Preferably, the heating element 21 includes a cold section 211 and a heating section 212. The cold section 211 is embedded in the side wall of the furnace body 1 and one end extends out of the furnace body 1 for connecting to a power source. The heating section 212 is arranged circumferentially along the inner wall of the furnace chamber. The heating section 212 is located at the lower end of the inner side of the furnace chamber, so that heat is preferentially concentrated at the bottom, and the material at the bottom is fully heated.
[0065] Example 3
[0066] like Figure 1 , Figure 5 As shown, components that are the same as or corresponding to those in Embodiment 1 are referred to using the same reference numerals as in Embodiment 1. For simplicity, only the differences from Embodiment 1 are described below. The difference between Embodiment 3 and Embodiment 1 is as follows:
[0067] In this embodiment, the two ends of the roller 3 are also provided with limiting components 5 to ensure the position of the roller 3 relative to the furnace body 1 and to prevent axial displacement during the rotation of the roller 3.
[0068] The limiting component 5 includes a support roller 51 installed on the outer wall of the roller 3 and a positioning roller 52 rotatably installed on the bracket 13. There are two positioning rollers 52, which respectively abut against the two sides of the support roller 51. By rotating the positioning support roller 51 through the positioning roller 52, the axial limiting of the roller 3 is achieved, thereby improving the rotation accuracy of the roller 3.
[0069] Preferably, the drive assembly 4 includes a drive motor 41 mounted on the bracket 13 and a sprocket assembly 42. The sprocket assembly 42 includes a large sprocket mounted on one end of the roller 3, a small sprocket connected to the output end of the drive motor 41, and a transmission chain located between the large sprocket and the small sprocket.
[0070] Example 4
[0071] like Figure 3 As shown, components that are the same as or corresponding to those in Embodiment 1 are referred to using the same reference numerals as those in Embodiment 1. For simplicity, only the differences from Embodiment 1 are described below. The difference between Embodiment 4 and Embodiment 1 is as follows:
[0072] In this embodiment, a circulation component 6 is also included. The circulation component 6 is disposed inside the furnace body 1 to circulate and guide the gas inside the furnace body 1.
[0073] Preferably, the circulation component 6 includes:
[0074] A flow guide 61 is installed above the drum 3 and connected to the top of the furnace; the bottom of the flow guide 61 abuts against the outer wall of the drum 3; and several ventilation holes are provided in the middle of the flow guide 61.
[0075] And a circulating fan 62, several of which are installed on the top of the furnace body 1, with their blades located between the guide shroud 61 and the furnace body 1.
[0076] It should be noted that when the circulating fan 62 is working, it draws the air in the drum 3 to the top, passes through the guide shroud 61, and is guided by the guide shroud 61 to the heating element 21 for reheating. The heated air enters the furnace chamber through the furnace chamber hole 31 and comes into contact with the material to heat the material.
[0077] 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 continuous rotary drum tempering furnace, comprising: The furnace body has an internal furnace chamber for continuous heat treatment, and the furnace body has a feed inlet and a discharge outlet at both ends. A heating element is disposed inside the furnace body to change the temperature inside the furnace body; Its characteristic is that it further includes: A drum is rotatably disposed within the furnace body, forming a gas flow channel between the drum and the furnace body. A plurality of furnace lining holes are evenly distributed on the drum. A spiral pusher plate is provided on the inner wall of the drum. And a drive assembly that drives the roller to rotate.
2. The continuous drum tempering furnace according to claim 1, characterized in that, The spacing H between adjacent spiral blades of the spiral pusher plate is greater than 3 times the outline dimension of the material.
3. A continuous drum tempering furnace according to claim 1, characterized in that, The heating component includes: Heating elements, wherein a plurality of heating elements are symmetrically arranged along the two side walls of the furnace body; And a protective cover, which is used to protect the end of the heating element that extends out of the furnace body.
4. A continuous drum tempering furnace according to claim 3, characterized in that, The heating element includes a cold section and a heating section. The cold section is embedded in the side wall of the furnace body and one end extends out of the furnace body. The heating section is arranged circumferentially along the inner wall of the furnace chamber.
5. A continuous rotary drum tempering furnace according to claim 1, characterized in that, The roller is also provided with limiting components at both ends; The limiting assembly includes a support roller mounted on the outer wall of the roller and a positioning roller rotatably mounted on the bracket; the positioning roller abuts against both sides of the support roller.
6. A continuous drum tempering furnace according to claim 1, characterized in that, The spiral pusher plate has several through holes.
7. A continuous rotary drum tempering furnace according to claim 1, characterized in that, The bottom of the furnace body is provided with several ash discharge ports along its axial direction. The ash discharge ports are connected to the interior of the furnace body, and the ends of the ash discharge ports are provided with ash discharge furnace doors.
8. A continuous drum tempering furnace according to claim 1, characterized in that, The drive assembly includes a drive motor mounted on a bracket and a sprocket assembly. The sprocket assembly includes a large sprocket mounted on one end of the roller, a small sprocket connected to the output end of the drive motor, and a transmission chain connecting the large sprocket and the small sprocket.
9. A continuous drum tempering furnace according to claim 1, characterized in that, It also includes a circulation component, which is located inside the furnace body to circulate and guide the gas inside the furnace body.
10. A continuous drum tempering furnace according to claim 9, characterized in that, The loop component includes: A flow guide shroud is installed above the drum and connected to the top of the furnace chamber; the bottom of the flow guide shroud abuts against the outer wall of the drum; and several ventilation holes are provided in the middle of the flow guide shroud. And a circulating fan, which is installed on the top of the furnace body, with its blades located between the guide shroud and the furnace body.