Electric furnace lining roaster

Abstract

An electric furnace lining roaster relates to the technical field of casting production. Comprising an upper ring, a lower ring, a heating pipe mechanism and a temperature control mechanism, the heating pipe mechanism and the temperature control mechanism are located between the upper ring and the lower ring, the upper ring and the lower ring are connected through a stand column to form a roaster main frame, the upper ring and the lower ring are connected with the heating pipe mechanism through an upper supporting frame and a lower supporting frame respectively, and the heating pipe mechanism comprises long heating pipes and short heating pipes. The long heating pipes and the short heating pipes are annularly and crossly arranged through the annular support frame and are connected with the upper support frame and the lower support frame, each heating pipe is fixed on the annular support frame through a fastening buckle, the short heating pipes are arranged at the lower part of the roaster, and each heating pipe is connected with a PLC (Programmable Logic Controller) of the temperature control mechanism and is controlled by the temperature controller. The furnace lining baking device is reasonable in structure and simple to operate, can be matched with the heating pipe to work at will through the temperature controller and the PLC system, can bake the furnace lining strictly according to a given process curve, greatly improves the baking quality and efficiency of the furnace lining, can reduce the labor intensity of workers, and improves the working environment.

Description

TECHNICAL FIELD

[0001] The utility model relates to foundry production technical field, especially a kind of electric furnace lining roaster. BACKGROUND

[0002] The induction furnace used in foundry uses a certain period of time, or after replacing induction coil, the cement paste of a part of furnace lining for fixed protection coil needs to be re-poured, after pouring, it needs to be baked according to the process curve, and the baking temperature fluctuation range is required to be within ±5 ℃. Figure 1

[0003] The conventional baking method is heated by spray gun flame or general electric heating tube, which is difficult to control the temperature fluctuation within the process range, thereby affecting the service life of furnace lining. If baking is not good, the service life of furnace lining will be greatly shortened, and it is easy to leak molten iron, leading to explosion, causing personal injury accidents, which has a significant impact on foundry production. This simple baking method also causes energy waste and environmental pollution and other problems. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the problems of the prior art, and provides an electric furnace lining roaster. The furnace lining roaster can accurately control the baking temperature and bake the furnace lining according to the given process curve.

[0005] The utility model adopts the technical scheme that the electric furnace lining roaster is characterized by comprising upper ring, lower ring, heating pipe mechanism between the two and control center, the upper ring and the lower ring are connected by stand column to form the main frame of roaster, the upper ring and the lower ring are connected with the heating pipe mechanism through upper support frame and lower support frame, the heating pipe mechanism comprises long heating pipe and short heating pipe, the long heating pipe and the short heating pipe are arranged in a ring shape and connected with the upper support frame and the lower support frame through ring-shaped support frame, each heating pipe is fixed on the ring-shaped support frame through fastening buckle, the short heating pipe is arranged at the lower part of the roaster, and each heating pipe is connected with the PLC of the control center and controlled by temperature controller.

[0006] The long heating pipe is divided into three groups A, B and C, and the short heating pipe is divided into three groups D, E and F, each group has three heating pipes arranged at 120°, the three heating pipes of each group are connected by wires, and each group of heating pipes can be powered independently;The lower ends of the heating pipes are aligned with the lower ends of the inductors of the electric furnace, and the upper ends of the long heating pipes are aligned with the upper ends of the inductors of the electric furnace.

[0007] ​The power of the long heating pipe is 2Kw, and the length is 1700mm; the power of the short heating pipe is 1.0Kw, and the length is 850mm; the wire uses high-temperature-resistant wire, and the heat-resistant temperature is 450 DEG C; temperature measuring thermocouples are arranged at the lowest temperature bottom and the highest temperature top of the furnace wall of the electric furnace, temperature is measured and transmitted to the control center, and each heating pipe is controlled to work through the PLC.

[0008] The upper support frame is arranged on the lower side of the upper ring, and the lower support frame is arranged on the upper side of the lower ring.

[0009] The four upper support frames and the four lower support frames are arranged on the upper ring and the lower ring respectively.

[0010] The temperature control system comprises a display screen connected with the PLC, and is used for displaying and recording actual temperature values of the furnace lining and baking process curves of the furnace lining material; when a difference value between the actual temperature and a required temperature exceeds a range or a fault occurs, voice alarm is sent.

[0011] The utility model discloses a structure is reasonable, and operation is simple, and uses two different power and length's electric heating pipe, and arranges according to certain order, and through the temperature controller and PLC system of control center, can match heating pipe work arbitrarily, can be electrified alone, has achieved the furnace lining temperature to be able to be baked according to the given process curve strictly, has improved the furnace lining baking quality and efficiency greatly, can reduce the labor intensity of worker, and also improves the working environment. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the baking process curve of the furnace lining;

[0013] Figure 2 It is the temperature curve of the furnace lining from the furnace bottom to the furnace mouth;

[0014] Figure 3 It is the structure schematic view of the utility model;

[0015] Figure 4 It is Figure 3 the electric heating pipe arrangement drawing shown in the G-G section of

[0016] Figure 5 It is Figure 3 the fastening buckle structure drawing shown in the H-H section of

[0017] Figure 6 It is the application effect drawing of the utility model;

[0018] In the drawing: 1, lower ring;2, short heating pipe;3, long heating pipe;4, stand;5, upper ring;6, upper support frame;7, annular support frame;8, fastening buckle;9, lower support frame;10, furnace cover;11, refractory brick;12, upper temperature measuring couple;13, furnace lining;14, inductor;15, lower temperature measuring couple. DETAILED DESCRIPTION EMBODIMENT

[0019] As Figures 3-5 shown in the electric furnace lining roaster, including the upper ring 5, the lower ring 1, the heating pipe mechanism and the control center between the two, the upper ring 5 and the lower ring 1 are connected by the column 4 to form the roaster main frame, the upper ring 5 and the lower ring 1 are connected by the upper support frame 6 and the lower support frame 9 to the heating pipe mechanism, the heating pipe mechanism includes long heating pipe 3, short heating pipe 2, the long heating pipe 3, short heating pipe 2 is arranged in a ring shape through the ring support frame 7 and is connected with the upper support frame 6, the lower support frame 9, each heating pipe is fixed on the ring support frame 7 through the fastening buckle 8, the short heating pipe 2 is in the lower part of the roaster, each heating pipe is connected with the PLC of the control center, and is controlled by the temperature controller.

[0020] The fastening buckle 8 is a U-shaped buckle, and the tail end is fastened and connected with each support frame through a locking nut.

[0021] The long heating pipe 3 is divided into three groups A, B and C, and the short heating pipe 2 is divided into three groups D, E and F, each group has three heating pipes arranged at 120° apart, the three heating pipes of each group are connected through wires, and each group of heating pipes can be powered independently; the lower ends of the heating pipes are aligned and flush with the lower ends of the inductors 14 of the electric furnace, and the upper ends of the long heating pipes 3 are flush with the upper ends of the inductors 14 of the electric furnace.

[0022] The power of the long heating pipe 3 is 2Kw, and the length is 1700mm; the power of the short heating pipe 2 is 1.0Kw, and the length is 850mm; the wire uses high-temperature resistant wire with a heat-resistant temperature of 450℃; temperature measuring thermocouples are arranged at the lowest temperature position of the bottom of the electric furnace wall and the highest temperature position of the top, to measure the temperature and transmit it to the control center, and the PLC controls the work of each heating pipe.

[0023] The upper support frame 6 is installed on the lower side of the upper ring 5, and the lower support frame 9 is installed on the upper side of the lower ring 1.

[0024] The column 4 is four, the upper support frame 6 is four, the lower support frame 9 is four, and the ring support frame 7 is upper, middle and lower three.

[0025] The temperature control system includes a display screen connected with the PLC, which is used to display and record the actual temperature value of the lining and the lining material roasting process curve, and when the difference between the actual temperature and the process required temperature exceeds the range or has a fault, a voice alarm will be issued.

[0026] As Figure 6 shown, the utility model is installed in the electric furnace lining, and the heating pipe connection state in each time period is shown in the following table. According to the actual value of the lining temperature, the PLC controller can connect any group of heating pipes at any time.

[0027] Table 1. Electrical heating tube on-off table

[0028] .

[0029] The PLC system has a display screen that displays the actual temperature value of the furnace lining and the baking process curve of the furnace lining material. When the difference between the actual temperature and the required temperature exceeds the range, the system will issue a voice alarm, and the heating tube can be manually powered to ensure that the furnace lining temperature is qualified.

Claims

1. An electric furnace lining roaster characterised in that: The application relates to a baking device, which comprises an upper ring, a lower ring, a heating pipe mechanism arranged between the two rings and a control center, the upper ring and the lower ring are connected through a stand to form a baking device main frame, the upper ring and the lower ring are connected with the heating pipe mechanism through an upper support frame and a lower support frame, the heating pipe mechanism comprises long heating pipes and short heating pipes, the long heating pipes and the short heating pipes are arranged in a ring shape and are connected with the upper support frame and the lower support frame through a ring-shaped support frame, each heating pipe is fixed on the ring-shaped support frame through a fastening buckle, the short heating pipes are arranged at the lower part of the baking device, each heating pipe is connected with a PLC of the control center and is controlled by a temperature controller.

2. An electric furnace lining baker as claimed in claim 1, characterised in that: The long heating pipes are divided into three groups of A, B and C, and the short heating pipes are divided into three groups of D, E and F, each group has three heating pipes arranged at an interval of 120 degrees, the three heating pipes of each group are connected through wires, and each group of heating pipes can be powered independently; the lower ends of the heating pipes are aligned and are flush with the lower ends of inductors of an electric furnace, and the upper ends of the long heating pipes are flush with the upper ends of the inductors of the electric furnace.

3. An electric furnace lining baker as claimed in claim 2, characterised in that: The power of the long heating pipes is 2Kw, and the length is 1700mm; the power of the short heating pipes is 1.0Kw, and the length is 850mm; the wires are high-temperature-resistant wires with a heat-resistant temperature of 450 DEG C; temperature measuring thermocouples are arranged at the lowest temperature position of the bottom of the electric furnace wall and the highest temperature position of the top, so as to measure and transmit the temperature to the control center, and the PLC controls the working of the heating pipes.

4. The electric furnace lining baker of claim 1, wherein: The upper support frame is arranged on the lower side of the upper ring, and the lower support frame is arranged on the upper side of the lower ring.

5. An electric furnace lining baker as claimed in claim 4, characterised in that: The stand is four, the upper support frame is four, the lower support frame is four, and the ring-shaped support frame is three, i.e. upper, middle and lower.

6. An electric furnace lining toaster as claimed in any one of claims 1 to 5, characterized in that: The temperature controller comprises a display screen connected with the PLC, which is used for displaying and recording the actual temperature value of the furnace lining and the baking process curve of the furnace lining material, and can give a voice alarm when the difference between the actual temperature and the required temperature exceeds the range or a fault occurs.

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