Natural gas heat treatment furnace

Abstract

The invention discloses a natural gas heat treatment furnace, and belongs to the technical field of heat treatment equipment, the natural gas heat treatment furnace comprises a furnace body, a furnace door, an opening and closing mechanism, a loading plate and a lifting mechanism, the furnace body is provided with a feeding and discharging port, the furnace door is located at the feeding and discharging port of the furnace body, and the opening and closing mechanism is used for controlling opening or closing of the furnace door; the multiple carrying plates are arranged from top to bottom and connected through a lifting mechanism. According to the size of a workpiece, the distance between the adjacent carrying plates is adjusted through the lifting structure, so that the workpiece can be placed on each carrying plate, the number of workpieces subjected to single heat treatment is increased, and therefore energy waste in the heat treatment process is reduced.

Description

Technical Field

[0001] This application relates to the technical field of heat treatment equipment, and in particular to a natural gas heat treatment furnace. Background Technology

[0002] Heat treatment furnaces are a general term for industrial furnaces used to perform various heat treatments on metal workpieces. Due to the diversity of heat treatment processes and the shapes and sizes of workpieces, heat treatment furnace types and structures vary widely. There are many ways to classify heat treatment furnaces. According to mechanization methods, they can be classified as: roller hearth furnaces, walking beam furnaces, bogie hearth furnaces, externally mechanized chamber furnaces, chain furnaces, rotary hearth furnaces, vibrating hearth furnaces, bell furnaces, etc. Heat treatment furnaces can also be classified according to heating methods, such as electric heating and natural gas heating. Natural gas is widely used due to its low price.

[0003] Existing natural gas heat treatment furnaces include a furnace body, a furnace door, an opening and closing mechanism, and a loading plate. The furnace body has inlet and outlet ports, and the furnace door is located at these ports. The opening and closing mechanism is used to open and close the furnace door. Workpieces are placed on the loading plate, and a forklift can move the loading plate and the workpieces on it into the furnace body, thereby achieving heat treatment of the workpieces.

[0004] Regarding the prior art mentioned above, the inventors discovered that the design of the carrier plate is unreasonable, resulting in a reduction in the number of workpieces per heat treatment, leading to energy waste. Summary of the Invention

[0005] This application provides a natural gas heat treatment furnace to reduce energy waste during the heat treatment process.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution:

[0007] A natural gas heat treatment furnace includes a furnace body, a furnace door, an opening and closing mechanism, a loading plate, and a lifting mechanism. The furnace body has an inlet and outlet. The furnace door is located at the inlet and outlet of the furnace body. The opening and closing mechanism is used to control the opening or closing of the furnace door. Multiple loading plates are arranged from top to bottom, and the multiple loading plates are connected by the lifting mechanism.

[0008] By adopting the above scheme, the distance between adjacent carrier plates can be adjusted according to the size of the workpiece through the lifting structure, so that each carrier plate can hold a workpiece, increasing the number of workpieces that can be heat-treated in a single heat treatment, thereby reducing energy waste in the heat treatment process.

[0009] Optionally, the lifting mechanism includes a first fixed plate, a first sliding plate, a drive assembly, a second fixed plate, a second sliding plate, a first support leg, and a second support leg. The first fixed plate is fixedly connected to the upper surface of the carrying plate, and the first sliding plate is slidably connected to the upper surface of the carrying plate. The drive assembly is used to drive the first sliding plate to slide on the carrying plate. The second fixed plate is fixedly connected to the bottom surface of the carrying plate, and the second sliding plate is slidably connected to the bottom surface of the carrying plate. One end of the first support leg is rotatably connected to the first sliding plate, and the other end of the first support leg is rotatably connected to the second fixed plate on the upper carrying plate. One end of the second support leg is rotatably connected to the first fixed plate, and the other end of the second support leg is rotatably connected to the second sliding plate on the upper carrying plate.

[0010] By adopting the above scheme, moving the first slide plate can drive the first and second support legs to rotate, thereby facilitating the adjustment of the distance between adjacent load plates and making it easier to place workpieces of different heights on the load plates.

[0011] Optionally, the lifting mechanism is provided in four sets, and the four sets of lifting mechanisms are symmetrically distributed at the four corners of the carrying plate.

[0012] By adopting the above solution, the support effect of the lifting structure on the loading platform is improved, thereby enhancing the structural stability of the loading platform and the lifting mechanism.

[0013] Optionally, the drive assembly includes a third fixed plate and a threaded rod. The third fixed plate is fixed to the upper surface of the carrier plate, the threaded rod is rotatably connected to the third fixed plate, and the first slide plate is threadedly connected to the threaded rod.

[0014] By adopting the above scheme, rotating the threaded rod can drive the first slide plate to move, thereby driving the first support leg and the second support leg to rotate, which facilitates the adjustment of the distance between adjacent load plates. At the same time, when the threaded rod is not rotated, the drive assembly can support the load plate above the lifting assembly.

[0015] Optionally, two third fixing plates are provided, and a first guide groove is formed on the upper surface of the carrier plate between the two third fixing plates, and the first slide plate is slidably connected in the first guide groove.

[0016] By adopting the above solution, the first slide plate can be prevented from rotating with the threaded rod, thereby allowing the screw to better drive the first slide plate to move.

[0017] Optionally, one end of the threaded rod extends outward to the third fixing plate, and a turntable is fixed to one end of the threaded rod extending outward to the third fixing plate. A hexagonal drive groove is provided on the outer side of the turntable.

[0018] By adopting the above solution, the hexagon can be inserted into the hexagon drive slot, making it convenient for workers to use the hexagon to rotate the threaded rod.

[0019] Optionally, a limiting component is provided on the carrier plate. The limiting component includes a base plate and a limiting cylinder. The limiting cylinder is fixed to the upper surface of the base plate, the base plate is fixed to the bottom of the carrier plate, and the limiting cylinder extends out of the upper surface of the carrier plate.

[0020] By adopting the above scheme, when holding a cylindrical workpiece, the cylindrical workpiece can be placed on the limiting cylinder, which reduces the lateral displacement of the cylindrical workpiece during the movement of the carrier plate, thereby minimizing the risk of the cylindrical workpiece falling off the carrier plate during the movement.

[0021] Optionally, a limiting platform is placed on the upper surface of the carrier plate, and the limiting platform is inserted into the limiting cylinder.

[0022] By adopting the above solution, when holding square tubular workpieces, the square tubular workpieces can be placed on the limiting platform, which reduces the lateral displacement of the square tubular workpieces during the movement of the carrying plate, thereby minimizing the risk of the square tubular workpieces falling off the carrying plate during the movement.

[0023] Optionally, a receiving platform is placed on the upper surface of the carrier plate, and the receiving platform is inserted into the limiting cylinder.

[0024] By adopting the above solution, it is convenient to hold small, irregularly shaped workpieces.

[0025] In summary, this application has the following technical effects:

[0026] 1. Based on the size of the workpiece, the distance between adjacent carrying plates is adjusted by the lifting structure so that each carrying plate can hold a workpiece, increasing the number of workpieces that can be heat-treated in a single heat treatment, thereby reducing energy waste during the heat treatment process;

[0027] 2. Rotating the threaded rod can drive the first slide plate to move, thereby driving the first support leg and the second support leg to rotate, which facilitates the adjustment of the distance between adjacent load plates. At the same time, when the threaded rod is not rotated, the drive assembly can support the load plate above the lifting assembly.

[0028] 3. The setting of the limiting component allows different types of workpieces to be heat-treated to be placed on different carrier plates, enabling the heat treatment box to simultaneously handle different types of workpieces. At the same time, when the forklift moves the carrier plate, the workpieces on the carrier plate are not easily detached from the carrier plate, making it easy to put or take the workpieces into or out of the furnace body. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of this application;

[0030] Figure 2This is a schematic diagram of the connection structure of the loading platform, lifting mechanism and limiting components of this application;

[0031] Figure 3 This is a schematic diagram of the internal structure of the carrier plate and the limiting component of this application.

[0032] In the diagram, 1. Furnace body; 11. Inlet / outlet; 2. Furnace door; 3. Opening / closing mechanism; 4. Carrying plate; 41. First guide slide; 42. First mounting groove; 43. Limiting hole; 44. Second mounting groove; 5. Lifting mechanism; 51. First fixing plate; 52. First sliding plate; 53. Drive assembly; 531. Third fixing plate; 532. Threaded rod; 533. Turntable; 54. Second fixing plate; 55. Second sliding plate; 56. First support leg; 57. Second support leg; 6. Limiting assembly; 61. Base plate; 62. Limiting cylinder; 63. Limiting square platform; 64. Receiving platform; 7. Fixing bolt. Detailed Implementation

[0033] The following is combined with Figure 1-3 This application is described in further detail.

[0034] This application discloses a natural gas heat treatment furnace. (Refer to...) Figure 1 and Figure 2 A natural gas heat treatment furnace includes a furnace body 1, a furnace door 2, an opening and closing mechanism 3, a carrying plate 4, a lifting mechanism 5, and a limiting component 6. The furnace body 1 has an inlet / outlet 11 on its side for workpiece entry and exit. A furnace roller for conveying the carrying plate 4 is rotatably connected to the bottom of the inner wall of the furnace body 1. A heating nozzle is installed in the middle of the inner wall of the furnace body 1. The furnace door 2 is located at the inlet / outlet 11 of the furnace body 1. Three carrying plates 4 are arranged from top to bottom. The carrying plates 4 are connected by the lifting mechanism 5. The limiting component 6 is installed on the carrying plate 4.

[0035] Reference Figure 1 and Figure 2 The opening and closing mechanism 3 is used to control the opening and closing of the furnace door 2. The opening and closing mechanism 3 includes a gate frame, a motor, a winding reel, and a rope. The gate frame is fixed at the inlet / outlet 11 of the furnace body 1. The motor is fixed to the top of the gate frame. The winding reel is rotatably connected to the top of the gate frame. One end of the rope is fixed to the outer circumference of the winding reel and wound around it; the other end of the rope is fixed to the top of the furnace door 2. The two sides of the furnace door 2 are slidably connected to the two sides of the gate frame. When the motor is started, it drives the winding reel to rotate. The rotation of the winding reel causes the rope to retract and extend, thereby raising and lowering the furnace door 2, facilitating its opening and closing.

[0036] Reference Figure 1 and Figure 2The container has three trays 4 arranged from top to bottom. Four sets of lifting mechanisms 5 are provided between two trays 4, symmetrically distributed at the four corners of the trays 4. Each lifting mechanism 5 includes a first fixed plate 51, a first sliding plate 52, a drive assembly 53, a second fixed plate 54, a second sliding plate 55, a first support leg 56, and a second support leg 57. The first fixed plate 51 is fixedly connected to the upper surface of the tray 4. First guide grooves 41 are provided at each of the four corners of the tray 4. The first sliding plate 52 is slidably connected within the first guide grooves 41.

[0037] Reference Figure 1 and Figure 2 The drive assembly 53 is used to drive the first slide plate 52 to slide within the first guide groove 41. The drive assembly 53 includes a third fixing plate 531 and a threaded rod 532. Two third fixing plates 531 are provided. The two third fixing plates 531 are fixed to the upper surface of the carrying plate 4, and the two third fixing plates 531 are respectively located on the outer sides of the two ends of the first guide groove 41. The threaded rod 532 is rotatably connected to the outer sides of the two third fixing plates 531. One end of the threaded rod 532 extends out of the outer third fixing plate 531, and a turntable 533 is fixed to the end of the threaded rod 532 extending out of the outer third fixing plate 531. A hexagonal drive groove is opened on the outer side of the turntable 533, which allows the operator to rotate the threaded rod 532 using a hexagon. The first slide plate 52 is threadedly connected to the threaded rod 532. The operator can rotate the threaded rod 532 using a hexagon, which facilitates the sliding of the first slide plate 52 within the first guide groove 41.

[0038] Reference Figure 1 and Figure 2 The second fixed plate 54 is fixedly connected to the bottom surface of the carrying plate 4. Second guide grooves are provided at each of the four corners of the bottom surface of the carrying plate 4. The second sliding plate 55 is slidably connected to the second guide grooves on the carrying plate 4. One end of the first support leg 56 is rotatably connected to the first sliding plate 52, and the other end is rotatably connected to the second fixed plate 54 on the upper carrying plate 4. One end of the second support leg 57 is rotatably connected to the first fixed plate 51, and the other end is rotatably connected to the second sliding plate 55 on the upper carrying plate 4. The rotating turntable 533 can drive the threaded rod 532 to rotate, and the rotation of the threaded rod 532 can drive the first sliding plate 52 to slide within the first guide groove 41, thereby causing the first support leg 56 and the second support leg 57 to rotate. This allows adjustment of the distance between the two carrying plates 4, facilitating the carrying plates 4 to support workpieces of different heights.

[0039] Reference Figure 2 and Figure 3A first mounting groove 42 is formed in the middle of the bottom surface of the carrying plate 4. Multiple matrix-distributed circular limiting holes 43 are formed in the middle of the upper surface of the carrying plate 4. Second mounting grooves 44 are formed at intervals on both sides of the carrying plate 4. The limiting assembly 6 includes a base plate 61 and a limiting cylinder 62. The base plate 61 is slidably connected within the first mounting groove 42. Fixing bolts 7 are located within the second mounting grooves 44, and the carrying plate 4 and the base plate 61 are fixed together by the second fixing bolts 7. After the fixing bolts 7 are installed, the heads of the fixing bolts 7 are located in the second mounting grooves 44, reducing the impact of the fixing bolts 7 on the entry and exit of the carrying plate 4 from the furnace body 1.

[0040] Reference Figure 2 and Figure 3 Multiple limiting cylinders 62 are provided, and the multiple limiting cylinders 62 are distributed in a matrix on the upper surface of the base plate 61, and the limiting cylinders 62 are integrally formed on the upper surface of the base plate 61. The limiting cylinders 62 are inserted into the limiting holes 43 of the carrier plate 4, and the limiting cylinders 62 extend out of the upper surface of the carrier plate 4. When holding a cylindrical workpiece, the cylindrical workpiece can be placed on the limiting cylinders 62, which reduces the lateral displacement of the cylindrical workpiece during the movement of the carrier plate 4, thereby minimizing the possibility of the cylindrical workpiece falling off the carrier plate 4 during the movement.

[0041] Reference Figure 2 and Figure 3 A limiting platform 63 is placed on the upper surface of the carrier plate 4 at the limiting cylinder 62. A first groove is formed on the bottom surface of the limiting platform 63 to mate with it. When holding a square tubular workpiece, the workpiece can be placed on the limiting platform 63, reducing lateral displacement of the workpiece during the movement of the carrier plate 4, thereby minimizing the risk of the workpiece falling off the carrier plate 4 during movement.

[0042] Reference Figure 2 and Figure 3 A receiving platform 64 is placed at the center of the upper surface of the carrying plate 4. The bottom surface of the receiving platform 64 has multiple arrayed second grooves that fit into the limiting cylinder 62. The receiving platform 64 is inserted into the limiting cylinder 62. The receiving platform 64 can support irregularly shaped workpieces. In this embodiment, the receiving platform 64 supports specialized steel cylinders.

[0043] The implementation principle of a natural gas heat treatment furnace according to an embodiment of this application is as follows:

[0044] When the workpiece height is lower than the maximum adjustable height between the two carrier plates 4, the distance between the two carrier plates 4 is adjusted to a suitable height for workpiece heat treatment. Workpieces to be heat treated are placed on all three carrier plates 4, making the heat treatment furnace suitable for heat treatment of small workpieces and enabling the simultaneous heat treatment of multiple small workpieces. When the small workpieces have different shapes: Carrier plates 4 without the limiting platform 63 and receiving platform 64 can hold cylindrical workpieces and reduce lateral displacement of the cylindrical workpieces during movement, thus minimizing the risk of them falling off the carrier plates 4. Carrier plates 4 with the limiting platform 63 can hold square tube workpieces and reduce lateral displacement of the square tube workpieces during movement, thus minimizing the risk of them falling off the carrier plates 4. Carrier plates 4 with the receiving platform 64 can receive irregularly shaped workpieces.

[0045] When the workpiece height exceeds the maximum adjustable height between the two support plates 4, adjust the distance between the three support plates 4 to the minimum adjustable height. Place the workpiece on the uppermost support plate 4 to make the heat treatment furnace suitable for heat treatment of large workpieces.

[0046] This specific embodiment is merely an explanation of this application 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 the claims of this application.

Claims

1. A natural gas heat treatment furnace, characterized in that: The furnace includes a furnace body (1), a furnace door (2), an opening and closing mechanism (3), a loading plate (4), and a lifting mechanism (5). The furnace body (1) has an inlet and outlet (11). The furnace door (2) is located at the inlet and outlet (11) of the furnace body (1). The opening and closing mechanism (3) is used to control the opening or closing of the furnace door (2). The loading plate (4) is arranged in multiple pieces from top to bottom. The multiple loading plates (4) are connected by the lifting mechanism (5).

2. The natural gas heat treatment furnace according to claim 1, characterized in that: The lifting mechanism (5) includes a first fixed plate (51), a first sliding plate (52), a drive assembly (53), a second fixed plate (54), a second sliding plate (55), a first support leg (56), and a second support leg (57). The first fixed plate (51) is fixedly connected to the upper surface of the loading plate (4), and the first sliding plate (52) is slidably connected to the upper surface of the loading plate (4). The drive assembly (53) is used to drive the first sliding plate (52) to slide on the loading plate (4). The second fixed plate (54) The first support leg (56) is fixedly connected to the bottom surface of the carrying plate (4), the second slide plate (55) is slidably connected to the bottom surface of the carrying plate (4), one end of the first support leg (56) is rotatably connected to the first slide plate (52), the other end of the first support leg (56) is rotatably connected to the second fixed plate (54) on the upper carrying plate (4), one end of the second support leg (57) is rotatably connected to the first fixed plate (51), and the other end of the second support leg (57) is rotatably connected to the second slide plate (55) on the upper carrying plate (4).

3. A natural gas heat treatment furnace according to claim 2, characterized in that: The lifting mechanism (5) is provided in four sets, and the four sets of lifting mechanisms (5) are symmetrically distributed at the four corners of the carrying plate (4).

4. A natural gas heat treatment furnace according to claim 2, characterized in that: The drive assembly (53) includes a third fixing plate (531) and a threaded rod (532). The third fixing plate (531) is fixed to the upper surface of the carrier plate (4), and the threaded rod (532) is rotatably connected to the third fixing plate (531). The first sliding plate (52) is threadedly connected to the threaded rod (532).

5. A natural gas heat treatment furnace according to claim 4, characterized in that: Two third fixing plates (531) are provided. A first guide groove (41) is provided on the upper surface of the loading plate (4) between the two third fixing plates (531). The first sliding plate (52) is slidably connected in the first guide groove (41).

6. A natural gas heat treatment furnace according to claim 5, characterized in that: One end of the threaded rod (532) extends outward to the third fixing plate (531), and a turntable (533) is fixed to the end of the threaded rod (532) extending outward to the third fixing plate (531). A hexagonal drive groove is provided on the outer side of the turntable (533).

7. A natural gas heat treatment furnace according to claim 1, characterized in that: The loading plate (4) is provided with a limiting component (6), which includes a base plate (61) and a limiting cylinder (62). The limiting cylinder (62) is fixed on the upper surface of the base plate (61), the base plate (61) is fixed at the bottom of the loading plate (4), and the limiting cylinder (62) extends out of the upper surface of the loading plate (4).

8. A natural gas heat treatment furnace according to claim 7, characterized in that: A limiting platform (63) is placed on the upper surface of the carrier plate (4), and the limiting platform (63) is inserted into the limiting cylinder (62).

9. A natural gas heat treatment furnace according to claim 7, characterized in that: A receiving platform (64) is placed on the upper surface of the carrier plate (4), and the receiving platform (64) is inserted into the limiting cylinder (62).

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