Hanging scaffold type well type heating furnace

Abstract

A furnace door is hinged to the top of a furnace body, a hanging scaffold is placed in an inner cavity of a hearth and is of a multi-layer bearing plate structure, bearing plates are vertically connected through connecting rods on the edges, and the top of the hanging scaffold is connected with a hanging ring through a hanging rod; the center of the bottom of the hearth inner cavity is provided with a positioning bump, and the center of the hanging scaffold bottom bearing plate is provided with a positioning hole matched with the positioning bump in size and position. According to the utility model, a plurality of layers of workpiece samples can be placed on the hanging scaffold placed in the hearth, so that the heating efficiency of the pit furnace is improved; and a suspension lifting device is arranged, the whole hanging scaffold is hoisted for treatment, and convenience and rapidness are achieved.

Description

Technical Field

[0001] This utility model relates to the field of heat treatment experimental devices, specifically a hanging-plate type well heating furnace. Background Technology

[0002] Pit-type heating furnaces are industrial and laboratory heating devices suitable for various applications such as high-temperature homogenization, normalizing, tempering, annealing, and quenching of workpieces. They offer advantages such as uniform heating, high heating efficiency, and good sealing. The furnace door is located at the top of the furnace body, and heaters are installed around the perimeter of the furnace chamber. Workpieces and samples are vertically placed and removed using lifting tools.

[0003] Existing small-scale experimental pit furnaces are used to heat small workpieces or samples for heat treatment; samples are typically placed and removed manually. However, existing experimental pit furnaces have a small internal capacity, can only heat a small number of samples at a time, and are very inconvenient to place and remove. When multiple samples are heated in the furnace at the same time, they cannot be quickly removed for quenching, delaying the quenching heat treatment time and resulting in inaccurate experimental data. Summary of the Invention

[0004] This utility model provides a hanging plate type pit heating furnace, which uses a hanging plate placed in the furnace chamber to place multiple layers of workpiece samples, thereby improving the heating efficiency of the pit furnace; and is equipped with a suspension lifting device to lift the entire hanging plate for processing, which is convenient and quick.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A suspended plate type well heating furnace has a furnace door hinged to the top of the furnace body, a suspended plate placed in the inner cavity of the furnace, the suspended plate is a multi-layer support plate structure, the support plates are connected vertically by connecting rods on the edges, and the top of the suspended plate is connected to a lifting ring by a lifting rod; a positioning protrusion is set at the center of the bottom of the inner cavity of the furnace, and a positioning hole is set at the center of the bottom support plate of the suspended plate, the size and position of which match the positioning protrusion.

[0007] Sample workpieces can be placed on top of each support plate, changing the traditional method of directly stacking materials in pit furnaces. This improves the utilization space for heating workpieces in pit furnaces, and the lifting platform can simultaneously lift multiple workpieces out of the furnace for heat treatment, eliminating the need to clamp and remove them one by one, thus improving furnace removal efficiency and preventing missed quenching opportunities due to furnace removal time. The support plates are made of perforated steel plates or honeycomb panels. When the lifting platform is lowered to the furnace bottom, the conical positioning protrusions engage with the positioning holes to position the platform in the center of the furnace.

[0008] The outer side of the furnace body is connected to the column via ear plates and bearings. The upper end of the column is fixedly connected to the cantilever rod. A reel is set in the middle of the column. Several fixed pulleys are set on the cantilever rod. One end of the reel is connected to a steel cable. The other end of the steel cable passes through the fixed pulley and is suspended above the furnace chamber and connected to a hook.

[0009] When the furnace door is opened, the lifting platform is lifted out of the furnace by the hook and steel cable. The column can rotate freely through the bearing to realize the angle swing of the cantilever. When the reel winds up the steel cable, the hook hooks the lifting ring to lift the lifting platform. A quenching water pool can be placed next to the pit furnace, and the lifting platform and the workpiece can be directly immersed in the water for quenching, so as to realize the batch quenching heat treatment of the entire batch of workpieces.

[0010] A throttle handle is provided at the end of the cantilever. The throttle handle allows the operator to manually adjust the swing angle of the cantilever.

[0011] The reel's shaft is equipped with a handle, which drives the reel to wind. The winch reel is a winch with a brake function to prevent it from falling automatically due to gravity under natural conditions. In addition to being wound manually with the handle, the reel can also be electrically driven by a brake motor, which is more labor-saving.

[0012] Advantages of utility models

[0013] 1. This utility model changes the traditional workpiece stacking method of pit furnace. By using a hanging plate placed in the furnace chamber, multiple layers of workpiece samples can be placed, thereby improving the heating efficiency of the pit furnace.

[0014] 2. This utility model has a built-in lifting device for the hanging plate, which is integrated with the furnace body to achieve rapid and safe lifting of the hanging plate out of the furnace. It can also be quickly turned to the side for quenching heat treatment, which improves the speed of heat treatment and the accuracy of the experiment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the internal structure of the present invention (furnace door closed).

[0016] Figure 2 This is a schematic diagram of the internal structure of the present invention (furnace door open).

[0017] Figure 3 This is a schematic diagram of the elevation structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the elevation structure of the hanging platform;

[0019] The numbers and component names in the diagram are as follows: 1-furnace body; 11-furnace door; 12-positioning protrusion; 2-hanging plate; 21-hanging ring; 22-hanging rod; 23-support plate; 24-connecting rod; 25-positioning hole; 31-column; 32-cantilever rod; 33-winding reel; 34-fixed pulley; 35-hook; 36-rotary handle. Detailed Implementation

[0020] Example 1

[0021] A suspended plate type well heating furnace has a furnace door 11 hinged to the top of the furnace body 1. A suspended plate 2 is placed in the inner cavity of the furnace. The suspended plate 2 has a multi-layer support plate 23 structure. The support plates 23 are connected vertically by connecting rods 24 on the edges. The top of the suspended plate 2 is connected to a lifting ring 21 by a lifting rod 22. A positioning protrusion 12 is set at the center of the bottom of the inner cavity of the furnace. A positioning hole 25 is set at the center of the bottom support plate of the suspended plate 2. Its size and position match the positioning protrusion 12.

[0022] The outer side of the furnace body 1 is connected to the column 31 via ear plates and bearings. The upper end of the column 31 is fixedly connected to the cantilever rod 32. A reel 33 is set in the middle of the column 31. Several fixed pulleys 34 are set on the cantilever rod 32. One end of the reel 33 is connected to a steel cable. The other end of the steel cable passes through the fixed pulley 34 and is suspended above the furnace chamber and connected to a hook 35.

[0023] A throttle 36 is provided at the tail end of the cantilever rod 32.

[0024] The spool 33 has a handle, which drives the spool to wind.

Claims

1. A suspended platform type pit-type heating furnace, characterized in that: The furnace body (1) is hinged to the top of the furnace door (11), and the furnace cavity is placed with a hanging plate (2). The hanging plate (2) is a multi-layer support plate (23) structure. The support plates (23) are connected vertically by the connecting rods (24) on the edge. The top of the hanging plate (2) is connected to the lifting ring (21) by the lifting rod (22). A positioning protrusion (12) is set at the center of the bottom of the furnace cavity, and a positioning hole (25) is set at the center of the bottom support plate of the hanging plate (2). Its size and position match the positioning protrusion (12).

2. The suspended platform type pit heating furnace according to claim 1, characterized in that: The furnace body (1) is connected to the column (31) on the outside through the ear plate and bearing. The upper end of the column (31) is fixedly connected to the cantilever rod (32). A reel (33) is set in the middle of the column (31). Several fixed pulleys (34) are set on the cantilever rod (32). One end of the reel (33) is connected to a steel cable. The other end of the steel cable passes through the fixed pulley (34) and is suspended above the furnace to connect to the hook (35).

3. The suspended platform type pit heating furnace according to claim 2, characterized in that: A throttle (36) is provided at the tail end of the cantilever rod (32).

4. The suspended platform type pit heating furnace according to claim 2, characterized in that: The reel (33) has a handle on its shaft, which drives the reel to wind.

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