A box-type resistance furnace

Abstract

The utility model relates to a box -type resistance furnace relates to the technical field of heat treatment equipment, it includes box and sets up the box door at the front side of box, the box door and the sliding connection between box, be provided with the elevating gear between the box door and box, the fixed gear rack of one side of box door is provided with, the rotation axle is rotationally arranged in the box, one end of rotation axle is connected with drive gear, the intermeshing between drive gear and gear, the other end of rotation axle connects driving bevel gear, the screw rod is rotationally arranged in the box, the end of screw rod is connected with driven bevel gear, the intermeshing between driven bevel gear and driving bevel gear, the fixed setting of positioning rod is in the box, the article rack is set up between screw rod and positioning rod, the screw rod and article rack are between the screw connection, the sliding connection between positioning rod and article rack. The application has the effect that improves the operation convenience, reduces the security risk.

Description

Technical Field

[0001] This utility model relates to the technical field of heat treatment equipment, and in particular to a box-type resistance furnace. Background Technology

[0002] Box-type resistance furnaces are common heat treatment equipment widely used in the field of material processing. Traditional resistance furnaces use a fixed rack design, which requires opening the furnace door first and then manually operating the rack to move the workpiece in and out of the furnace chamber. This operation is cumbersome and poses certain safety hazards, and therefore needs to be improved. Utility Model Content

[0003] To improve ease of operation and reduce safety hazards, this application provides a box-type resistance furnace.

[0004] The box-type resistance furnace provided in this application adopts the following technical solution: A box-type resistance furnace includes a box body and a door located on the front side of the box body. The door is slidably connected to the box body. A lifting component is provided between the door and the box body, which drives the door to move up and down vertically. A rack is fixedly installed on the side of the door facing the box body. A rotating shaft is rotatably installed inside the box body. One end of the rotating shaft is connected to a drive gear, which meshes with the rack. The other end of the rotating shaft is connected to a driving bevel gear. A lead screw is rotatably installed inside the box body and located on the top wall. The end of the lead screw is connected to a driven bevel gear, which meshes with the driving bevel gear. A positioning rod is fixedly installed inside the box body and located on the top wall. A shelf is provided between the lead screw and the positioning rod. The lead screw and the shelf are threadedly connected, and the positioning rod and the shelf are slidably connected.

[0005] By adopting the above technical solution, when heating the sample, the sample is placed on the shelf. When the sample needs to be removed, the lifting device raises the door, causing the door to rise vertically. This causes the rack to slide between itself and the box body. As the rack slides, it abuts against the gear, causing the rotating shaft to rotate. Consequently, the driving bevel gear abuts against the driven bevel gear, causing the lead screw to rotate. Simultaneously, the shelf is guided by the positioning rod and slides along the length of the positioning rod. The shelf continuously extends out of the box body, eliminating the need for separate operation of the shelf. Raising the door to open the box automatically extends the shelf out of the box body, and lowering the door to close the box automatically retracts the shelf back into the box body. This improves the convenience of operation, eliminating the need for personnel to reach into the box to retrieve or place samples, thereby reducing safety hazards.

[0006] Preferably, the lifting component includes a set of cylinders, which are symmetrically arranged on the side wall of the housing, and the piston rods of the cylinders are connected to the housing door.

[0007] Preferably, the lifting component further includes a set of guide rods and guide blocks. The guide rods are fixedly mounted on the top wall of the housing, and the guide blocks are fixedly mounted on the side wall of the housing door. The guide blocks and guide rods are slidably connected.

[0008] By adopting the above technical solution, when it is necessary to control the lifting and sliding between the door and the body, two cylinders work simultaneously to drive the door to slide, while the guide block slides on the guide rod. This not only makes control convenient, but also ensures high stability of the connection between the door and the body.

[0009] Preferably, the shelf includes a U-shaped frame and a shelf. One end of the U-shaped frame is threaded to a lead screw, and the other end of the U-shaped frame is slidably connected to a positioning rod. The shelf is located on the U-shaped frame, and a set of connecting rods is integrally provided on the U-shaped frame. A connecting hole is provided through the shelf for the connecting rods to be inserted and abutted. The connecting rods and the connecting holes are mutually compatible.

[0010] Preferably, the top end of the connecting rod is rounded.

[0011] By adopting the above technical solution, when the lead screw rotates, it can drive the U-shaped frame to slide. After the U-shaped frame drives the shelf to slide out of the box, the connecting rod and the connecting hole are disengaged, and the shelf can be quickly removed from the U-shaped frame for easy recycling of the samples on the shelf. When the shelf needs to be placed, the connecting rod is inserted through the connecting hole, and the shelf can be quickly positioned on the U-shaped frame by the connecting rod abutting against the inner wall of the connecting hole.

[0012] Preferably, a limiting hole is provided at one end of the box body facing the door, and a limiting rod is threaded into the limiting hole. The limiting rod and the limiting hole are detachably connected.

[0013] By adopting the above technical solution, after the lifting component drives the box door to slide and rise, the limit rod is rotated and threadedly connected to the limit hole. The limit rod is inserted into the limit hole, and the limit rod is located below the box door, which can limit the box door and reduce the phenomenon of the box door suddenly falling and damaging the equipment and personnel.

[0014] Preferably, the inner wall of the box is provided with a number of heating resistance wires, and heat insulation material is provided between the resistance wires, the lead rod, and the positioning rod.

[0015] Preferably, the lead screw, positioning rod, driving bevel gear, driven bevel gear, and shelf are all made of high-temperature resistant materials.

[0016] By adopting the above technical solutions, thermal insulation materials are used for heat preservation, and the use of high-temperature resistant materials can effectively reduce the impact of high temperatures and extend the service life of the device.

[0017] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up a box body, box door, lifting component, rack, rotating shaft, gear, driving bevel gear, lead screw, driven bevel gear, and positioning rod, the lifting component drives the box door to rise, eliminating the need for separate operation of the shelf. When the box door is raised and opened, the shelf automatically extends out of the box body, and when the box door is lowered and closed, the shelf automatically retracts into the box body, improving the convenience of operation. No personnel need to reach into the box to retrieve or place samples, thereby reducing safety hazards. 2. By setting cylinders, guide rods and guide blocks, when it is necessary to control the lifting and sliding between the door and the body, two cylinders work at the same time to drive the door to slide, and the guide block slides on the guide rod. This not only makes control convenient, but also ensures high stability of the connection between the door and the body. 3. By setting up a U-shaped frame, a shelf, a connecting rod, and a connecting hole, when the lead screw rotates, it can drive the U-shaped frame to slide. After the U-shaped frame drives the shelf to slide out of the box, the connecting rod and the connecting hole can be disengaged, and the shelf can be quickly removed from the U-shaped frame for easy recycling of the samples on the shelf. When it is necessary to place the shelf, the connecting rod is inserted through the connecting hole, and the shelf can be quickly positioned on the U-shaped frame by using the connecting rod to abut against the inner wall of the connecting hole. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a box-type resistance furnace provided in an embodiment of this application.

[0019] Figure 2 This is a schematic diagram of a box-type resistance furnace provided in an embodiment of this application.

[0020] Figure 3 This is a cross-sectional view of a box-type resistance furnace provided in an embodiment of this application.

[0021] Explanation of reference numerals in the attached drawings: 1. Box body; 11. Box door; 2. Rack; 3. Rotating shaft; 31. Drive gear; 32. Driving bevel gear; 4. Lead screw; 41. Driven bevel gear; 42. Positioning rod; 5. Shelf; 51. U-shaped frame; 52. Shelf plate; 61. Cylinder; 62. Guide rod; 63. Guide block; 7. Connecting rod; 71. Connecting hole; 8. Limiting hole; 81. Limiting rod; 9. Resistance wire; 10. Thermal insulation material. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0023] This application discloses a box-type resistance furnace. (Refer to...) Figures 1 to 3The device includes a housing 1 and a door 11 located on the front side of the housing 1. The door 11 is slidably connected to the housing 1 and can be raised and lowered along the height direction of the housing 1. A lifting mechanism is provided between the door 11 and the housing 1. A rack 2 is fixedly installed on the side of the door 11 facing the housing 1, and the length direction of the rack 2 is along the height direction of the door 11. A rotating shaft 3 is rotatably installed inside the housing 1, and the length direction of the rotating shaft 3 is along the length direction of the housing 1. One end of the rotating shaft 3 is connected to a drive gear 31, which meshes with the rack 2. The other end of the rotating shaft 3 is connected to a drive bevel gear 32. When the lifting mechanism drives the door 11 to slide, the door 11 drives the rack 2 to slide together, and the rack 2 can abut against the gear to drive the rotating shaft 3 to rotate.

[0024] Reference Figures 1 to 3 Inside the housing 1, a lead screw 4 is rotatably mounted on the top wall. The length of the lead screw 4 is along the width of the housing 1. The end of the lead screw 4 is connected to a driven bevel gear 41, which meshes with the driving bevel gear 32. Inside the housing 1, a positioning rod 42 is fixedly mounted on the top wall. A shelf 5 is positioned between the lead screw 4 and the positioning rod 42. The lead screw 4 and the shelf 5 are threaded together, and the positioning rod 42 and the shelf 5 are slidably connected. The lead screw 4, the positioning rod 42, the driving bevel gear 32, the driven bevel gear 41, and the shelf 5 are all made of tungsten carbide, a high-temperature resistant material. Tungsten carbide is a hard material with excellent high-temperature resistance, and its melting point is as high as 2870 degrees Celsius, while the temperature inside the resistance furnace is generally below 2000 degrees Celsius. When heating the sample, the sample is placed on the shelf 5. When the sample needs to be removed, the lifting device drives the door 11 to rise. The rack 2 drives the rotating shaft 3 to rotate, and the driving bevel gear 32 can abut against the driven bevel gear 41, driving the lead screw 4 to rotate. At the same time, the shelf 5 is guided by the positioning rod 42 and can slide along the length of the positioning rod 42. The shelf 5 continuously moves away from the inside of the box 1 and extends out of the box 1, so that the shelf 5 does not need to be operated separately. When the door 11 is raised and opened, the shelf 5 is automatically pulled out of the box 1. When the door 11 is lowered and closed, the shelf 5 is automatically pulled back into the box 1.

[0025] Reference Figure 1 and Figure 2The lifting mechanism includes a set of cylinders 61, a set of guide rods 62, and a guide block 63. The cylinders 61 are symmetrically arranged on the side walls of the housing 1, and the piston rods of the cylinders 61 are connected to the housing door 11. The guide rods 62 are fixed vertically on the top wall of the housing 1, and the guide blocks 63 are fixedly installed on the side walls of the housing door 11, with a slidable connection between the guide blocks 63 and the guide rods 62. When it is necessary to control the lifting and sliding movement between the housing door 11 and the housing 1, both cylinders 61 operate simultaneously to drive the housing door 11 to slide, while the guide blocks 63 slide on the guide rods 62. This not only facilitates control but also ensures high stability in the connection between the housing door 11 and the housing 1.

[0026] Reference Figure 1 and Figure 3 The shelf 5 includes a U-shaped frame 51 and a shelf 52. One end of the U-shaped frame 51 is threaded to the lead screw 4, and the other end of the U-shaped frame 51 is slidably connected to the positioning rod 42. The shelf 5 is located on the U-shaped frame 51. A set of connecting rods 7 are integrally provided on the U-shaped frame 51. The top end of the connecting rod 7 is arc-shaped and the connecting rod 7 is arranged in a vertical direction. A connecting hole 71 is provided through the shelf 5 for the connecting rod 7 to be inserted and abutted. The connecting rod 7 and the connecting hole 71 are mutually adapted. When the lead screw 4 rotates, it can drive the U-shaped frame 51 to slide. After the U-shaped frame 51 drives the shelf 52 to slide out of the box 1, the connecting rod 7 and the connecting hole 71 are disengaged, and the shelf 52 can be quickly removed from the U-shaped frame 51 for easy recycling of the samples on the shelf 52. When the shelf 52 needs to be placed, the connecting rod 7 is inserted through the connecting hole 71. By using the connecting rod 7 to abut against the inner wall of the connecting hole 71, the shelf 52 can be quickly positioned on the U-shaped frame 51.

[0027] Reference Figure 1 A limiting hole 8 is provided at one end of the housing 1 facing the door 11. A limiting rod 81 is threadedly connected to the limiting hole 8. The limiting rod 81 is detachably connected to the limiting hole 8. After the lifting component drives the door 11 to slide and rise, the limiting rod 81 is threadedly connected to the limiting hole 8 by rotating it. The limiting rod 81 is inserted into the limiting hole 8. The limiting rod 81 is located below the door 11 and can limit the door 11, reducing the possibility of the door 11 suddenly falling and damaging the equipment and personnel.

[0028] Reference Figure 3 The inner wall of the housing 1 is provided with several heating resistance wires 9. A heat insulation material 10 is provided between the resistance wires 9, the lead rod 4, and the positioning rod 42. The heat insulation material 10 is made of graphite, which can reduce the impact of the heat of the resistance wires 9 on the lead rod 4 and the positioning rod 42.

[0029] The implementation principle of a box-type resistance furnace according to an embodiment of this application is as follows: When heating a sample, the sample is placed on the shelf 5. When the sample needs to be removed, the piston rod of the cylinder 61 extends, causing the door 11 to rise. The door 11 rises vertically, causing the rack 2 to slide between the rack and the box body 1. When the rack 2 slides, it abuts against the gear, causing the rotating shaft 3 to rotate. Then, the driving bevel gear 32 can abut against the driven bevel gear 41, driving the lead screw 4 to rotate. At the same time, the shelf 5 is guided by the positioning rod 42, and the shelf 5 can slide along the length direction of the positioning rod 42. The shelf 5 continuously moves away from the inside of the box body 1 and extends out of the box body 1, so that the shelf 5 does not need to be operated separately. When the door 11 is raised and opened, the shelf 5 is automatically extended out of the box body 1. When the door 11 is lowered and closed, the shelf 5 is automatically retracted into the box body 1, which improves the convenience of operation. There is no need for personnel to reach into the box body 1 to take or take samples, thereby reducing safety hazards.

[0030] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A box-type resistance furnace, comprising a box body (1) and a door (11) disposed on the front side of the box body (1), characterized in that: The door (11) is slidably connected to the box body (1), and a lifting component is provided between the door (11) and the box body (1). The lifting component is used to drive the door (11) to move up and down in the vertical direction. A rack (2) is fixedly provided on the side of the door (11) facing the box body (1). A rotating shaft (3) is rotatably provided inside the box body (1). One end of the rotating shaft (3) is connected to a drive gear (31), and the drive gear (31) meshes with the rack (2). The other end of the rotating shaft (3) is connected to an active drive gear. A bevel gear (32); a lead screw (4) is rotatably installed inside the housing (1) and located on the top wall. The end of the lead screw (4) is connected to a driven bevel gear (41). The driven bevel gear (41) meshes with the driving bevel gear (32). A positioning rod (42) is fixedly installed inside the housing (1) and located on the top wall. A shelf (5) is installed between the lead screw (4) and the positioning rod (42). The lead screw (4) and the shelf (5) are threaded together. The positioning rod (42) and the shelf (5) are slidably connected.

2. A box-type resistance furnace according to claim 1, characterized in that: The lifting component includes a set of cylinders (61), which are symmetrically arranged on the side wall of the box (1), and the piston rod of the cylinder (61) is connected to the box door (11).

3. A box-type resistance furnace according to claim 2, characterized in that: The lifting component also includes a set of guide rods (62) and guide blocks (63). The guide rods (62) are fixedly installed on the top wall of the box body (1), and the guide blocks (63) are fixedly installed on the side wall of the box door (11). The guide blocks (63) and the guide rods (62) are slidably connected.

4. A box-type resistance furnace according to claim 1, characterized in that: The shelf (5) includes a U-shaped frame (51) and a shelf (52). One end of the U-shaped frame (51) is threadedly connected to the lead screw (4), and the other end of the U-shaped frame (51) is slidably connected to the positioning rod (42). The shelf (5) is located on the U-shaped frame (51). A set of connecting rods (7) is integrally provided on the U-shaped frame (51). A connecting hole (71) is provided through the shelf (5) for the connecting rods (7) to be inserted and abutted. The connecting rods (7) and the connecting hole (71) are mutually adapted.

5. A box-type resistance furnace according to claim 4, characterized in that: The top end of the connecting rod (7) is set in an arc shape.

6. A box-type resistance furnace according to claim 1, characterized in that: The box body (1) has a limiting hole (8) at one end facing the door (11). A limiting rod (81) is threaded into the limiting hole (8). The limiting rod (81) and the limiting hole (8) are detachably connected.

7. A box-type resistance furnace according to claim 1, characterized in that: The inner wall of the box (1) is provided with a number of heating resistance wires (9), and heat insulation material (10) is provided between the resistance wires (9), the lead screw (4) and the positioning rod (42).

8. A box-type resistance furnace according to claim 1, characterized in that: The lead screw (4), positioning rod (42), driving bevel gear (32), driven bevel gear (41), and shelf (5) are all made of high-temperature resistant materials.

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