Automatic temperature measuring device for smelting furnace

Abstract

The utility model discloses an automatic temperature measuring device for a smelting furnace, which comprises an aluminum alloy smelting furnace body arranged in a production workshop, a temperature measuring hole is obliquely arranged on the furnace wall of the furnace body, a guide rail seat is arranged on the furnace wall of the furnace body through a fixing mechanism, and the guide rail seat is provided with a sliding block capable of moving back and forth along the guide rail seat. The guide rail seat is provided with a power mechanism for driving the sliding block to move, the sliding block is provided with a temperature measuring device which can extend into the temperature measuring hole to measure the temperature of the aluminum alloy melt in the furnace body, and the temperature measuring device is connected to a display unit. According to the utility model, the temperature inside the aluminum alloy melt can be measured automatically in the smelting process, so that the working safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of aluminum alloy processing technology, and in particular to an automatic temperature measuring device for a smelting furnace. Background Technology

[0002] Aluminum is the second most widely used metal after steel, possessing advantages such as high production volume, high thermal conductivity, good ductility, low density, and high specific strength. It is widely used in construction, power, transportation, and aerospace industries. To continuously improve the quality of aluminum products, the melting temperature of aluminum alloys should be monitored throughout the entire melting process. Once the aluminum alloy melting stage begins, after preheating, aluminum ingots and intermediate alloys are sequentially placed into the furnace. Maintaining precise temperature control throughout this process is crucial for obtaining high-quality aluminum alloy solutions; the temperature of the molten aluminum should not exceed 760℃. During melting production, there is a risk of overheating. If the melting temperature exceeds 760℃, hydrogen absorption and oxidation in the melt intensify, significantly increasing the oxide content and severely affecting the melt microstructure. Utility Model Content

[0003] The present invention aims to solve the above-mentioned technical problems and provide an automatic temperature measuring device for a melting furnace, which can improve the safety of temperature measurement inside the aluminum alloy melting furnace.

[0004] To solve the above-mentioned technical problems, the present invention provides an automatic temperature measuring device for a melting furnace, which includes an aluminum alloy melting furnace body installed in the production workshop. The furnace wall of the furnace body is provided with temperature measuring holes at an angle. A guide rail seat is installed on the furnace wall of the furnace body through a fixing mechanism. A slider that can move back and forth along the guide rail seat is provided. A power mechanism that drives the slider to move is installed on the guide rail seat. A temperature measuring device that can extend into the temperature measuring hole to measure the temperature of the aluminum alloy melt in the furnace body is installed on the slider. The temperature measuring device is connected to a control module, and the control module is connected to a display unit.

[0005] Furthermore, the power mechanism is a telescopic cylinder or a lead screw drive system.

[0006] Furthermore, the guide rail base is equipped with a travel limit mechanism.

[0007] Furthermore, a buffer device is provided at the travel limit mechanism.

[0008] Furthermore, the fixing mechanism and the guide rail base are integrated into one structure.

[0009] Furthermore, the control module is a PLC.

[0010] Furthermore, a protective device is installed at the automatic temperature measuring device of the smelting furnace.

[0011] The present invention has the following advantages: The present invention can complete the internal temperature measurement of aluminum alloy melt during the smelting process in an automated manner, thereby improving the safety of the work and avoiding the safety risks of manual operation. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of an automatic temperature measuring device for a smelting furnace according to the first embodiment of the present invention.

[0013] Figure 2 This is a schematic diagram of an automatic temperature measuring device for a smelting furnace according to the second embodiment of the present invention.

[0014] Figure 3 This is a partial structural diagram of the stroke limiting mechanism in the second embodiment of the present invention. Figure 2 Enlarged view of section I in the middle.

[0015] Figure 4 This is a partial sectional view of the fixing mechanism and guide rail seat in the third embodiment of this utility model.

[0016] Figure 5 This is a schematic diagram of an automatic temperature measuring device for a smelting furnace according to the fourth embodiment of the present invention. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] The first embodiment of this utility model provides an automatic temperature measuring device for a smelting furnace. See [link to relevant documentation]. Figure 1The system includes an aluminum alloy melting furnace body 1 installed in the production workshop. Temperature measuring holes 2 are obliquely arranged on the side wall of the furnace body, with an inclination angle of 48-55 degrees (e.g., a 50-degree inclination angle). A ceramic protective layer can be placed inside the temperature measuring hole. A guide rail seat 3 is installed on the furnace wall via a fixing mechanism. This fixing mechanism can be a metal base, with obliquely distributed guide rail seats mounted on it. The inclination angle of the guide rail seats corresponds to the inclination angle of the temperature measuring holes, allowing the temperature measuring device to extend and retract freely within the holes. A slider 4 is provided on the guide rail seat, which can move back and forth along the guide rail seat. The slider can push the temperature measuring device into the furnace and ensure the stability of the device during forward or repositioning. A power mechanism for driving the slider movement is installed on the guide rail seat, including but not limited to a telescopic cylinder. This telescopic cylinder can be connected to an external control button; activating the control button completes the testing process. The slider 4 is equipped with a temperature measuring device 5 that can be inserted into the temperature measuring hole to measure the temperature of the aluminum alloy melt in the furnace. The temperature measuring device is a thermometer. The temperature measuring device is connected to the control module. The control module is connected to the display unit 6. The display unit is a display screen. The control module includes, but is not limited to, a PLC.

[0019] It is worth mentioning that a corresponding ceramic structural layer can be coated on the surface of the slider and guide rail, which can not only protect the structural surface, but also reduce the friction between them.

[0020] In traditional smelting processes, workers manually measure the temperature of aluminum alloys using handheld thermometers at the completion of smelting, refining, and before and after casting. This method is not only prone to measurement errors but also dangerous because the thermometer has a limited length, requiring workers to measure the temperature very close to the molten aluminum. Inadequate safety precautions can place a significant strain on their bodies. This patented design addresses this by adding a slanted temperature measuring hole to the side of the existing furnace, a structurally feasible solution. The temperature measuring needle is fixed directly above the hole via a transmission mechanism. When a temperature measurement is needed, pressing a switch sends the needle through the hole into the molten aluminum alloy. The external display shows the current temperature of the molten aluminum. After measurement, the needle is removed from the molten aluminum, increasing its service life. This improves economic efficiency (reducing the frequency of purchasing more needles) and enhances safety (eliminating the need for manual temperature measurement, thus reducing the risk of injury to operators).

[0021] The second embodiment of this utility model provides an automatic temperature measuring device for a smelting furnace, which differs from the first embodiment in that the guide rail seat is provided with a travel limit mechanism 7.

[0022] See Figure 2-3The travel limit mechanism 7 includes a limit block 7a mounted on the guide rail seat and a limit sensor 7b mounted on the limit block 7 and cooperating with the slider 4. This limit sensor is connected to the control module. When the slider 4 touches the limit sensor 7b, the control module controls the power mechanism driving the slider to stop, preventing overtravel and potential operational risks. Even if the limit sensor malfunctions, the limit block, being a metal block welded to the guide rail seat, can still provide appropriate resistance to the slider to prevent overtravel. This dual redundancy design has significant practical value in safety risk control.

[0023] It is worth mentioning that a buffer device is provided at point 7 of the travel limit mechanism. This buffer device can provide a certain resistance before the slider touches the limit sensor, allowing the slider's power mechanism to start slowing down in advance. Specifically, a buffer device is installed at the limit block 7a of the travel limit mechanism. This buffer device has a spring 7c installed in the inner hole of the limit block. The spring is connected to a buffer rod 7d, which can enter or exit the inner hole of the limit block (also known as a buffer hole). When the buffer rod 7d is pushed by the slider, it compresses the spring 7c, allowing the buffer rod to enter the inner hole of the limit block. The limit compression stroke of the buffer rod is exactly the same as the state when the detection end of the limit sensor touches the slider. This structure can effectively protect the limit sensor and improve the safety and reliability of the entire system.

[0024] The third embodiment of this utility model provides an automatic temperature measuring device for a smelting furnace. The difference between this device and the first embodiment is that the fixing mechanism and the guide rail base are an integrated structure, which can greatly facilitate the efficiency of on-site installation.

[0025] See Figure 4 The fixing mechanism 8 and the guide rail base 3 are a single, integrated metal structure for easy on-site installation. Two positioning posts 8a are located on the back of the fixing mechanism to precisely align the inclined holes 8b of the fixing mechanism with the temperature measuring holes on the furnace body. Alignment of the inclined holes 8b with the temperature measuring holes facilitates the temperature measuring equipment's corresponding temperature measurement actions. The slider 5 is mounted on the guide rail base. When the drive mechanism for the slider is a cylinder, a cylinder rod actuation channel is provided within the guide rail base to meet the needs of the slider's movement. If the drive mechanism for the slider is, for example, a lead screw, a corresponding lead screw is installed inside the guide rail base. The motor driving the lead screw can be installed at the end of the guide rail base, and the slider has a lead screw slider section that cooperates with the lead screw.

[0026] See also Figure 4A stabilizing block 9 can be installed at the oblique hole of the fixing mechanism. The stabilizing block is provided with a corresponding opening that matches the oblique hole 8b. The presence of the stabilizing block can improve the stability and reliability of the temperature measuring device extending into the temperature measuring hole. The probe of the probe-type temperature measuring instrument can easily enter and exit through the corresponding opening of the stabilizing block.

[0027] The fourth embodiment of this utility model provides an automatic temperature measuring device for a smelting furnace, which differs from the first embodiment in that a protective device 10 is provided at the automatic temperature measuring device for the smelting furnace.

[0028] See Figure 5 In this embodiment, the protective device adopts a cage structure. This cage structure has a front protective surface 10a, a rear protective surface, a top protective surface, a bottom protective surface, and a left protective surface, all fixed to the side wall of the furnace body. The right side of the entire cage structure is fixed to the furnace body. Taking the front protective surface as an example, it is composed of metal rods arranged at equal intervals. The other sides can also be welded together using metal rods. When welding the cage structure, appropriate movement channels need to be reserved for the slider, the actuating mechanism, and the cables. In complex working environments, this protective device can effectively prevent external forces from damaging the temperature measuring device.

[0029] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the present invention.

Claims

1. An automatic temperature measuring device for a smelting furnace, comprising a smelting furnace body for aluminum alloy installed in a production plant, characterized in that, The furnace wall of the furnace body is obliquely provided with a temperature measuring hole, the furnace wall of the furnace body is provided with a guide rail base through a fixing mechanism, the guide rail base is provided with a sliding block capable of moving back and forth along the guide rail base, the guide rail base is provided with a power mechanism for driving the sliding block to move, the sliding block is provided with a temperature measuring device capable of extending into the temperature measuring hole to measure the temperature of the aluminum alloy melt in the furnace body, the temperature measuring device is connected to a control module, and the control module is connected to a display unit; The power mechanism is a telescopic air cylinder; The guide rail base is provided with a stroke limiting mechanism; The stroke limiting mechanism is provided with a buffer device; The fixing mechanism and the guide rail base are of an integral structure; The control module is a PLC; The automatic temperature measuring device of the smelting furnace is provided with a protection device; The buffer device has a spring installed in the inner hole of the limiting block, and the spring is connected to a buffer rod which can enter or pop out of the inner hole of the limiting block; The protection device adopts a cage structure, and the cage structure has a cage front protection surface, a cage rear protection surface, a cage top protection surface, a cage bottom protection surface and a cage left protection surface which are fixed to the side wall of the furnace body, and the right side of the whole cage structure is fixed to the furnace body; A stabilizing block is installed at the inclined hole of the fixing mechanism, and the stabilizing block is provided with a corresponding opening hole matched with the inclined hole.

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