Heat treatment device

Abstract

The utility model relates to a heat treatment device. Temperature control of an existing heat treatment device has defects. The furnace body is internally provided with a furnace cavity, the heating assembly is arranged in the furnace cavity, the control assembly is used for controlling the heating assembly to operate, an external pipeline is arranged on the furnace body, the two ends of the pipeline are communicated with the two ends of the furnace cavity respectively, and a driving piece for driving airflow to flow is arranged in the pipeline. And the driving piece drives the airflow to circularly flow between the furnace chamber and the pipeline, so that the temperature of each area in the furnace chamber is kept constant. Bridging pipelines are arranged at the two ends of the furnace cavity, air at the first end of the furnace cavity is conveyed through the second end of the pipeline, so that air at the second end of the furnace cavity penetrates through the furnace cavity and flows back to the first end, it is guaranteed that heat is evenly diffused among all areas of the furnace cavity through air flow circulation, all the areas of the metal piece are evenly heated, and the heat treatment effect is effectively improved. The use experience is improved.

Description

Technical Field

[0001] The utility model relates to the field of metal processing, in particular to a heat treatment device. Background Art

[0002] The existing heat treatment device includes a furnace body with a furnace cavity, a heating component arranged in the furnace cavity, and a control component for controlling the operation of the heating component, and the control component controls the operation of the heating component and performs heat treatment on the metal parts in the furnace cavity. Due to the uneven arrangement of the heating component in the furnace cavity, there are temperature differences in various areas of the furnace cavity, resulting in uneven heating of various areas of the metal parts, which affects the heat treatment effect.

[0003] In addition, the control component can only switch the heating component on and off, so that the heating component can only switch between the shutdown state and the full-power heating state. This will cause the temperature in the furnace chamber to be too high due to heating inertia, and the temperature in the furnace chamber will fluctuate greatly due to the on-off switching of the heating component. It cannot be stably maintained at the preset target temperature, affecting the heat treatment effect. Utility Model Content

[0004] In order to solve the deficiencies of the prior art, the utility model provides a heat treatment device, in which cross-connected pipes are arranged at both ends of the furnace chamber, and the circulation of airflow is used to ensure uniform diffusion of heat, thereby improving the heat treatment effect and enhancing the user experience.

[0005] The utility model is realized in the following manner: a heat treatment device, comprising a furnace body with a furnace cavity, a heating component arranged in the furnace cavity, and a control component for controlling the operation of the heating component, the furnace body is provided with an external pipe, the two ends of the pipe are respectively connected with the two ends of the furnace cavity, the pipe is provided with a driving member for driving the airflow, the driving member drives the airflow to circulate between the furnace cavity and the pipe, so that the temperature of each area in the furnace cavity is kept constant. A cross-connected pipe is arranged at both ends of the furnace cavity, and the air at the first end of the furnace cavity is transported through the second end of the pipe, so that the air at the second end of the furnace cavity passes through the furnace cavity and flows back to the first end, and the circulation of the airflow ensures that the heat is evenly diffused between the various areas of the furnace cavity, so that the various areas of the metal parts are evenly heated, effectively improving the heat treatment effect and enhancing the user experience.

[0006] Preferably, the front wall of the furnace cavity forms an openable and closable furnace door, and the two ends of the pipe are respectively connected to the two side walls of the furnace cavity. The furnace door is opened and closed to form a passage for taking and placing metal parts. The two ends of the pipe are respectively arranged at the left and right ends of the furnace cavity. By increasing the distance between the two ends of the pipe, the airflow distance is increased, thereby ensuring the heat diffusion effect.

[0007] Preferably, valves are provided at both ends of the pipeline, and the valves can be rotated and switched between a closed state for blocking the pipeline and an open state for guiding the airflow to diffuse. Openable and closable valves are provided at both ends of the pipeline, so that the connection state between the pipeline and the furnace cavity can be adjusted. The pipeline and the furnace cavity can be connected by opening the valves to facilitate the circulation of the airflow, and the pipeline and the furnace cavity can be isolated by closing the valves to prevent the heat in the furnace cavity from diffusing outward through the pipeline, effectively reducing energy consumption, preventing the driving component from being in a high temperature environment for a long time, and protecting the driving component.

[0008] Preferably, the valve member comprises a plate-shaped valve and an air guide plate arranged on the side wall of the valve, the valve is provided with a rotating shaft arranged along its diameter, and the valve is swung and switched around the rotating shaft. The valve is used to block the pipeline, and the air guide plate is used to guide the airflow to diffuse. The air guide plate is arranged on the valve and linked, so that the air guide plate can guide and redirect the airflow when the valve is opened.

[0009] Preferably, the contour of the valve matches the cross-sectional contour of the pipeline, and when the valve is in a closed state, the periphery of the valve abuts against the inner wall of the pipeline and blocks the port of the pipeline. The periphery contour of the valve matches the cross-sectional contour of the pipeline, ensuring that the valve can completely block the pipeline and prevent the heat in the furnace cavity from diffusing outward through the pipeline.

[0010] Preferably, the air guide plates are multiple and form different angles with the valve, and the angles are all acute angles. When the valve is in an open state, the valve coincides with the axis of the pipeline port, and the airflow changes direction under the guidance of the air guide plates. The air guide plates and the valve are set at different angles to ensure that the air guide plates can guide the airflow in different directions, thereby improving the airflow diffusion effect.

[0011] Preferably, the driving member is a fan and is arranged in the middle section of the pipeline, a motor is arranged outside the pipeline, the motor shaft is inserted into the pipeline and drives the fan to rotate. The motor drives the driving member to rotate, so that the pipeline drives the airflow inside to flow, and realizes the circulation of airflow between the furnace cavity and the pipeline.

[0012] Preferably, the outer wall of the pipeline is wrapped with a heat insulation layer to reduce heat loss in the pipeline. The heat insulation layer is provided to prevent heat leakage in the pipeline, thereby reducing energy consumption and improving heat utilization efficiency.

[0013] Preferably, the control component includes a temperature sensor arranged in the furnace cavity and a controller for controlling the operation of the heating component, and the controller adjusts the voltage applied to the heating component according to the difference between the actual temperature in the furnace cavity and the preset target temperature, so that the heat generation efficiency of the heating component can be adjusted. The controller adjusts the operating voltage of the heating component according to the temperature difference between the actual temperature in the furnace cavity and the target temperature set by the user, which ensures that when the temperature difference is large, the heating time is shortened by increasing the power of the heating component and the temperature fluctuation amplitude in the furnace cavity is reduced, and when the temperature difference is small, the temperature regulation accuracy is improved by reducing the power of the heating component, the temperature control accuracy in the furnace cavity is improved, and the actual temperature is always kept consistent with the target temperature, thereby improving the heat treatment effect.

[0014] Preferably, the heating component is a resistance heating wire, which is arranged on the wall of the furnace cavity. The resistance heating wire forms a differentiated heat generation efficiency by receiving differentiated voltages, ensuring that the actual temperature in the furnace cavity is consistent with the target temperature.

[0015] The beneficial effects of the utility model are as follows: a bridging pipe is arranged at both ends of the furnace cavity, and the air at the first end of the furnace cavity is transported through the second end of the pipe, so that the air at the second end of the furnace cavity passes through the furnace cavity and flows back to the first end. The circulation of airflow ensures that the heat is evenly diffused among the various areas of the furnace cavity, so that various areas of the metal parts can be evenly heated, effectively improving the heat treatment effect and enhancing the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a structural schematic diagram of the furnace body;

[0017] Figure 2 is a schematic cross-sectional structural diagram of the valve member when it is in an open state;

[0018] Figure 3 is a schematic cross-sectional structural diagram of the valve member when it is in a closed state;

[0019] In the figure: 1. furnace body, 2. heating component, 3. pipeline, 4. driving part, 5. valve part, 6. valve, 7. air guide plate, 8. motor. DETAILED DESCRIPTION

[0020] The essential features of the present utility model are further described below in conjunction with the accompanying drawings and specific implementation methods.

[0021] like Figure 1A heat treatment device shown is composed of a furnace body 1 with a furnace cavity, a heating component 2 arranged in the furnace cavity, and a control component for controlling the operation of the heating component 2. The furnace body 1 is provided with an external pipe 3, and the two ends of the pipe 3 are respectively connected to the two ends of the furnace cavity. The pipe 3 is provided with a driving member 4 for driving the airflow, and the driving member 4 drives the airflow to circulate between the furnace cavity and the pipe 3, so that the temperature of each area in the furnace cavity is kept constant. A cross-connected pipe is set at both ends of the furnace cavity, and the air at the first end of the furnace cavity is transported through the second end of the pipe, so that the air at the second end of the furnace cavity passes through the furnace cavity and flows back to the first end. The circulation of the airflow ensures that the heat is evenly diffused between the various areas of the furnace cavity, so that the various areas of the metal parts are evenly heated, effectively improving the heat treatment effect and enhancing the user experience.

[0022] In actual operation, the front wall of the furnace cavity forms an openable and closable furnace door, and the two ends of the pipeline are respectively connected to the two side walls of the furnace cavity. When in use, the front wall of the furnace cavity is exposed by opening the furnace door, which is convenient for taking and placing metal parts. After the metal part is placed in the furnace cavity, the control component controls the heating component 2 to generate heat, so that the metal part is heated to the target temperature, thereby completing the heat treatment operation.

[0023] In actual operation, the heating component 2 is a resistance heating wire, which is unevenly arranged on the wall of the furnace cavity, so that the temperature of each area in the furnace cavity is different, which in turn causes the temperature difference in each area of ​​the metal part to affect the heat treatment effect. To this end, a pipe 3 is arranged on the furnace body 1, and the two ends of the pipe 3 are respectively connected to the two ends of the furnace cavity, so that the furnace cavity and the pipe 3 form a closed-loop circulation path, and the heat is uniformly diffused in the furnace cavity by guiding the airflow to circulate, so as to ensure that the temperature of each area in the furnace cavity remains the same.

[0024] In actual operation, valve components 5 are provided at both ends of the pipeline 3, and the valve components 5 can be rotated and switched between a closed state for blocking the pipeline 3 and an open state for guiding the airflow to diffuse. The valve component 5 includes a plate-shaped valve 6 and an air guide plate 7 provided on the side wall of the valve 6. The valve 6 is provided with a rotating shaft provided along its radial line, and the valve 6 swings and switches around the rotating shaft. The air guide plates 7 are multiple and fixed to the side wall of the valve 6, so that the air guide plates 7 can rotate synchronously with the valve 6, and then play a role in guiding the airflow to turn and flow when the valve body is in the open state.

[0025] In actual operation, the contour of the valve 6 matches the cross-sectional contour of the pipe 3, and the axial projection of the air guide plate 7 along the rotating shaft falls within a circular range set with the axis of the rotating shaft as the center. The diameter of the circular range is the same as the diameter of the valve 6, ensuring that the air guide plate 7 will not scrape or collide with the inner wall of the pipe 3 when rotating with the rotating shaft as the center, ensuring the safe rotation of the valve body. Specifically, when the valve member 5 is in the closed state (such as Figure 3As shown), the periphery of the valve 6 is attached to the inner wall of the pipeline 3 and blocks the port of the pipeline 3; when the valve member 5 is in the open state (as shown Figure 2 As shown), the valve 6 coincides with the axis of the port of the pipeline 3, and the airflow changes direction under the guidance of the air guide plate 7.

[0026] In actual operation, the air guide plates 7 are multiple and are arranged on both side walls of the valve 6. The air guide plates 7 on the same side of the valve 6 have different orientations, so that the airflow passing through can be guided to different directions, thereby improving the airflow diffusion effect. The air inlet port of the pipeline 3 can obtain airflow in a larger area of ​​the furnace cavity through the valve body provided with the air guide plates 7, and the air outlet port of the pipeline 3 can convey airflow to a larger area of ​​the furnace cavity through the valve body provided with the air guide plates 7.

[0027] In actual operation, the driving member 4 is a fan and is arranged in the middle section of the pipe 3. A motor 8 is arranged outside the pipe 3. The shaft of the motor 8 is inserted into the pipe 3 and drives the fan to rotate. The driving member 4 runs and drives the airflow in the pipe 3 to flow, and then drives the airflow to flow in the furnace cavity by forming an air pressure difference between the two ends of the pipe 3.

[0028] In actual operation, the outer wall of the pipe 3 is wrapped with a heat insulation layer to reduce heat loss in the pipe 3. The heat insulation layer is used to prevent the heat in the pipe 3 from diffusing outward, which not only improves the heat utilization efficiency, but also ensures safety in use and reduces the ambient temperature around the furnace body 1.

[0029] In actual operation, the control component includes a temperature sensor disposed in the furnace cavity and a controller for controlling the operation of the heating component 2. The controller adjusts the voltage applied to the heating component 2 according to the difference between the actual temperature in the furnace cavity and the preset target temperature, so that the heat generation efficiency of the heating component 2 can be adjusted. The controller includes a PLC and a solid-state relay. The PLC senses the temperature in the furnace cavity and controls the power supply voltage of the heating component 2 through the solid-state relay control box, ensuring that the heat generation efficiency of the heating component 2 is adjustable and that the actual temperature in the furnace cavity and the target temperature remain constant.

[0030] In actual operation, the furnace body 1 can be a tempering furnace, a nitrogen furnace, a vacuum quenching furnace, etc. It can not only adjust the heat production efficiency by adjusting the power supply voltage, but also improve the temperature balance of each area in the furnace cavity by setting the pipeline 3, which should be regarded as a specific embodiment of the present utility model.

Claims

1. A heat treatment device, comprising a furnace body (1) with a furnace cavity therein, a heating component (2) arranged in the furnace cavity, and a control component for controlling the operation of the heating component (2), characterized in that: The furnace body (1) is provided with an external pipe (3), the two ends of the pipe (3) are respectively connected to the two ends of the furnace cavity, the pipe (3) is provided with a driving member (4) for driving the airflow, the driving member (4) drives the airflow to circulate between the furnace cavity and the pipe (3) so that the temperature of each area in the furnace cavity is kept constant, the front wall of the furnace cavity forms an openable and closable furnace door, the two ends of the pipe are respectively connected to the two side walls of the furnace cavity, and the two ends of the pipe (3) are provided with valve members (5), the valve members (5) can be in a closed state of blocking the pipe (3) and in an open state of guiding the airflow. The valve member (5) is configured to rotate and switch between open states for air flow diffusion, the valve member (5) comprising a plate-shaped valve (6) and an air guide plate (7) arranged on a side wall of the valve (6), the valve (6) being provided with a rotating shaft arranged along its radial line, the valve (6) being swung and switched around the rotating shaft, the air guide plate (7) being a plurality of pieces and forming different angles with the valve (6), the angles being all acute angles, and when the valve member (5) is in the open state, the valve (6) coincides with the axis of the port of the pipeline (3), and the air flow changes direction under the guidance of the air guide plate (7).

2. A heat treatment device according to claim 1, characterized in that: The profile of the valve (6) matches the cross-sectional profile of the pipeline (3); when the valve member (5) is in a closed state, the periphery of the valve (6) adheres to the inner wall of the pipeline (3) and blocks the port of the pipeline (3).

3. A heat treatment device according to any one of claims 1 to 2, characterized in that: The driving member (4) is a fan and is arranged in the middle section of the pipeline (3). A motor (8) is arranged outside the pipeline (3). The shaft of the motor (8) is inserted into the pipeline (3) and drives the fan to rotate.

4. A heat treatment device according to any one of claims 1 to 2, characterized in that: The outer wall of the pipeline (3) is wrapped with a heat insulation layer to reduce heat loss in the pipeline (3).

5. A heat treatment device according to any one of claims 1 to 2, characterized in that: The control component comprises a temperature sensor arranged in the furnace cavity and a controller for controlling the operation of the heating component (2); the controller adjusts the voltage applied to the heating component (2) according to the difference between the actual temperature in the furnace cavity and a preset target temperature, so that the heat generation efficiency of the heating component (2) is adjustable.

6. A heat treatment device according to any one of claims 1 to 2, characterized in that: The heating component (2) is a resistance heating wire, and the resistance heating wire is arranged on the wall surface of the furnace cavity.

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