Energy-saving medium-frequency electric furnace for melting cast iron

Abstract

The utility model discloses an energy-saving medium-frequency electric furnace for melting cast iron, which relates to the technical field of medium-frequency electric furnaces, and particularly comprises a bottom plate, two longitudinal slide rails are fixedly connected to the top of the bottom plate, two transverse slide rails are arranged on the side surfaces of the longitudinal slide rails, the transverse slide rails are fixedly connected with the bottom plate, and a furnace body is arranged at the tops of the longitudinal slide rails. A heat preservation shell is arranged at the tops of every two adjacent transverse sliding rails, two first air outlet pipes are fixedly connected to the top of the furnace body, and connecting pipes matched with the first air outlet pipes are fixedly connected to the outer side of the bottom end of each heat preservation shell. The utility model solves the problems that the energy-saving efficiency is low when the existing medium-frequency electric furnace is used, the flue gas exhausted by the medium-frequency electric furnace has very high temperature, and the high-temperature flue gas is directly exhausted out of the electric furnace and is not reused, so that the phenomenon of energy waste exists.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of intermediate frequency electric furnace, concretely is energy -conserving type intermediate frequency electric furnace for melting cast iron. BACKGROUND

[0002] Intermediate frequency electric furnace is a power device that converts 50Hz alternating current into intermediate frequency (300Hz to 10000Hz), which is composed of frequency conversion device, furnace body, furnace front control and other parts. Intermediate frequency electric furnace is an important equipment for melting cast iron in casting production, which melts cast iron block into molten iron and then pours it into sand mold to get castings after cooling.

[0003] The existing intermediate frequency electric furnace has low energy efficiency during use. The flue gas discharged from the intermediate frequency electric furnace has a high temperature. These high-temperature flue gas is directly discharged from the electric furnace without being reused, resulting in energy waste.

[0004] In the Chinese utility model patent CN202220578021.1, an energy-saving intermediate frequency electric furnace is disclosed, which includes a bottom plate, an electric furnace, and a heat preservation device. The top ends of the bottom plate are fixedly connected with two longitudinal sliding rails. The sides of the longitudinal sliding rails are provided with two transverse sliding rails. The transverse sliding rails are fixedly connected with the bottom plate. The top of the longitudinal sliding rails is provided with a furnace body. The top of the adjacent two transverse sliding rails is provided with a heat preservation shell. The top of the furnace body is fixedly connected with two first gas outlet pipes. The bottom end of the heat preservation shell is fixedly connected with a connecting pipe matched with the first gas outlet pipe. The top of the bottom plate is fixedly connected with a support plate. The outer side of the heat preservation shell is fixedly connected with a support rod. The top of the bottom plate is fixedly connected with a heating box. The side of the heating box is provided with two through holes, and an inlet pipe and an outlet pipe are fixedly connected with the through holes, respectively. UTILITY MODEL CONTENTS

[0005] (I) Technical problems solved

[0006] In view of the deficiencies of the prior art, the utility model provides an energy-saving intermediate frequency electric furnace for melting cast iron, which solves the problems raised in the background art.

[0007] (II) Technical scheme

[0008] To achieve the above purpose, the utility model is implemented by the following technical scheme: a bottom plate is provided, the top of the bottom plate is fixedly connected with two longitudinal sliding rails, the sides of the longitudinal sliding rails are provided with two transverse sliding rails, the transverse sliding rails are fixedly connected with the bottom plate, the top of the longitudinal sliding rails is provided with a furnace body, the top of the adjacent two transverse sliding rails is provided with a heat preservation shell, the top of the furnace body is fixedly connected with two first gas outlet pipes, the bottom end of the heat preservation shell is fixedly connected with a connecting pipe matched with the first gas outlet pipe, the top of the bottom plate is fixedly connected with a support plate, the outer side of the heat preservation shell is fixedly connected with a support rod, the top of the bottom plate is fixedly connected with a heating box, the side of the heating box is provided with two through holes, and an inlet pipe and an outlet pipe are fixedly connected with the through holes, respectively.

[0009] Optionally, the bottom of the furnace body is fixedly connected with a plurality of first wheels, the plurality of first wheels are located inside the longitudinal slide rails respectively, the bottom of the heat preservation shell is fixedly connected with a plurality of second wheels, and the plurality of second wheels are located inside the plurality of transverse slide rails respectively.

[0010] Optionally, the side of the supporting plate is rotationally connected with a rotating plate, both ends of the rotating plate are rotationally connected with connecting rods, and the ends, away from the rotating plate, of the two connecting rods are rotationally connected with two supporting rods respectively.

[0011] Optionally, a hydraulic rod is fixedly connected between the two supporting rods, and an output shaft of the hydraulic rod is fixedly connected with an extension rod.

[0012] Optionally, a plurality of serpentine pipes are fixedly connected inside the heating box, and the heads and tails of the plurality of serpentine pipes are communicated with each other.

[0013] Optionally, a through hole is formed in the side of the heating box and a second air outlet pipe is fixedly connected with the heating box, the second air outlet pipe is communicated with one of the serpentine pipes, a through hole is formed in the outside of the heating box and a tee pipe is fixedly connected with the heating box, and the tee pipe is communicated with one of the serpentine pipes.

[0014] Optionally, a soft pipe is fixedly connected with each end, away from the serpentine pipe, of the tee pipe, and the ends, away from the tee pipe, of the two soft pipes are communicated with the outside of the top of the two heat preservation shells respectively.

[0015] The energy-saving type intermediate frequency electric furnace for melting cast iron has the following beneficial effects:

[0016] 1. The energy-saving type intermediate frequency electric furnace for melting cast iron is provided with longitudinal slide rails, transverse slide rails, heat preservation shells, first wheels, second wheels, first air outlet pipes, connecting pipes, rotating plates, connecting rods and hydraulic rods, so that the position of the heat preservation shell and the furnace body can be moved at will when the device is used, the furnace body is convenient to operate, the heat preservation shell is convenient to wrap the furnace body, the temperature of the heat preservation shell can be raised by absorbing the high-temperature flue gas in the furnace body after the heat preservation shell wraps the furnace body, the outside of the furnace body is thus heat-preserved, heat loss of the furnace body is reduced, the problem that the energy-saving efficiency of the existing intermediate frequency electric furnace is low when the intermediate frequency electric furnace is used, the flue gas discharged from the intermediate frequency electric furnace has a very high temperature, the high-temperature flue gas is directly discharged from the electric furnace without being reused, and the problem of energy waste thus exists is solved.

[0017] 2. The energy-saving type intermediate frequency electric furnace for melting cast iron is provided with a heating box, a water inlet pipe, a water outlet pipe, serpentine pipes, a second air outlet pipe, a tee pipe and soft pipes, so that the device can collect excess flue gas when the device is used, the water source can be heated by the high-temperature flue gas, the hot water demand is met, and the problem that the utilization efficiency of the energy-saving device for high-temperature flue gas is too poor and the excess flue gas cannot be fully utilized after the flue gas is too much is solved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structure schematic view of the utility model from the axial view;

[0019] Figure 2 is a structure schematic view of the utility model from the axial view; Figure 1

[0020] Figure 3 is a structure schematic view of the utility model from the axial view;

[0021] Figure 4 is a structure schematic view of the utility model from the axial view;

[0022] Figure 5 is a structure schematic view of the utility model from the axial view;

[0023] Figure 6 is a structure schematic view of the utility model from the axial view.

[0024] In the figure: 1, bottom plate; 2, longitudinal slide rail; 3, transverse slide rail; 4, furnace body; 5, heat preservation shell; 6, first wheel; 7, second wheel; 8, first air outlet pipe; 9, connecting pipe; 10, support plate; 11, support rod; 12, rotating plate; 13, connecting rod; 14, hydraulic rod; 15, heating box; 16, water inlet pipe; 17, water outlet pipe; 18, coiled pipe; 19, second air outlet pipe; 20, tee pipe; 21, hose. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0026] EMBODIMENT

[0027] Please refer to Figures 1 to 3 ​The utility model provides technical scheme includes bottom plate (1), two longitudinal slide rails (2) are fixedly connected to the top of bottom plate (1), two lateral slide rails (3) are equipped with in the side of longitudinal slide rail (2), the lateral slide rail (3) fixedly connected bottom plate (1), the top of longitudinal slide rail (2) is equipped with furnace body (4), the top of adjacent two lateral slide rails (3) is equipped with heat preservation shell (5), the top of furnace body (4) is fixedly connected with two first air outlet pipe (8), the bottom end outside of heat preservation shell (5) is fixedly connected with the connecting pipe (9) of being adapted to first air outlet pipe (8), the top of bottom plate (1) is fixedly connected with support plate (10), the outside of heat preservation shell (5) is fixedly connected with support rod (11), the top of bottom plate (1) is fixedly connected with heating box (15), the side of heating box (15) is equipped with two through -holes and is fixedly connected with water inlet pipe (16) and water outlet pipe (17) respectively.

[0028] Specifically, the position of the heat preservation shell 5 and the furnace body 4 can be moved arbitrarily during use, which is convenient for operating the furnace body and wrapping the furnace body 4 with the heat preservation shell 5, and the heat preservation shell 5 can absorb the high-temperature flue gas in the furnace body 4 to increase the temperature of the heat preservation shell 5 after wrapping the furnace body 4, so as to insulate the outside of the furnace body 4, reduce heat loss of the furnace body 4, and solve the problem that the energy efficiency of the existing intermediate frequency electric furnace is low during use, the flue gas discharged from the intermediate frequency electric furnace has a high temperature, the high-temperature flue gas is directly discharged from the electric furnace without being reused, and the phenomenon of energy waste exists.

[0029] Please refer to Fig. 2, the bottom of the furnace body (4) is fixedly connected with a plurality of first wheels (6), and the plurality of first wheels (6) are respectively located in the interior of the longitudinal slide rail (2). The bottom of the heat preservation shell (5) is fixedly connected with a plurality of second wheels (7), and the plurality of second wheels (7) are respectively located in the interior of the plurality of lateral slide rails (3).

[0030] Specifically, the first wheel 6 and the second wheel 7 can move the furnace body 4 and the heat preservation shell 5 respectively.

[0031] Please refer to Fig. 3, the side of the support plate (10) is rotatably connected with a rotating plate (12), both ends of the rotating plate (12) are rotatably connected with a connecting rod (13), and one end of the two connecting rods (13) away from the rotating plate (12) is rotatably connected with two support rods (11) respectively.

[0032] Specifically, the rotating plate 12 can make the connecting rod 13 rotate synchronously, so that the connecting rod 13 pulls the support rod 11, so that the support rod 11 moves synchronously.

[0033] Please refer to Figure 3The two support rods (11) are fixedly connected with a hydraulic rod (14), and an output shaft of the hydraulic rod (14) is fixedly connected with an extension rod.

[0034] Specifically, the hydraulic rod 14 can provide a power source for the movement of the support rod 11.

[0035] Please refer to Figs. 3 to Figure 5 The heating box (15) is fixedly connected with a plurality of serpentine pipes (18) inside, and the first and last ends of the plurality of serpentine pipes (18) are in communication with each other.

[0036] Specifically, the serpentine pipe 18 can increase the flow time and flow area of the high-temperature flue gas inside the heating box 14, so that the water source is uniformly heated.

[0037] Please refer to Figure 3 The heating box (15) is fixedly connected with a second gas outlet pipe (19) with a through hole on the side, the second gas outlet pipe (19) is in communication with one of the serpentine pipes (18), and the heating box (15) is fixedly connected with a three-way pipe (20) with a through hole on the outside, one of the serpentine pipes (18) is in communication with the three-way pipe (20).

[0038] Specifically, the second gas outlet pipe 19 and the three-way pipe 20 can intake and discharge the high-temperature flue gas.

[0039] Please refer to Figs. 4 and Figure 6 The two ends of the three-way pipe (20) away from the serpentine pipe (18) are fixedly connected with a hose (21), and the one end of the two hoses (21) away from the three-way pipe (20) is in communication with the outside of the top end of the two heat preservation shells (5).

[0040] Specifically, the hose 21 can still transport the high-temperature flue gas after the heat preservation shell 5 moves.

[0041] In use, the mobile furnace body 4 is moved to the top of the longitudinal slide rail 2, so that the furnace body 4 is moved between the two heat preservation shells 5, and then the hydraulic rod 14 is started to move the two supporting rods 11, the connecting rods 13 are moved after the supporting rods 11 are moved, and then the connecting rods 13 push the rotating plates 12 to rotate, so that the rotating angles of the two connecting rods 13 are the same, so that the two supporting rods 11 are synchronously moved, and then the two heat preservation shells 5 are moved to wrap the furnace body 4, and the connecting pipe 9 enters the inside of the first gas outlet pipe 8 after the heat preservation shell 5 is moved, and then the furnace body 4 is started to melt cast iron, and high-temperature flue gas is generated during melting, and then the high-temperature flue gas enters the inside of the heat preservation shell 5 through the first gas outlet pipe 8 and the connecting pipe 9, so that the temperature of the heat preservation shell 5 is increased, and then the heat preservation shell 5 insulates the furnace body 4, so that the heat loss of the furnace body 4 is reduced, and the problems that the energy-saving efficiency of the existing intermediate frequency electric furnace is low, the flue gas discharged from the intermediate frequency electric furnace has a high temperature, the high-temperature flue gas is directly discharged from the electric furnace and is not reused, and the phenomenon of energy waste exists are solved, and when the flue gas in the heat preservation shell 5 is too much, the flue gas moves to the top of the heat preservation shell 5 due to the high temperature, and then the flue gas enters the inside of the serpentine pipe 18 through the hose 21 and the three-way pipe 20, at this time, the inside of the heating box 15 is filled with water through the water inlet pipe 16, and then the high-temperature flue gas flows in the multiple serpentine pipes 18, so that the water source in the heating box 15 is heated, and the heated water can be discharged through the water outlet pipe 17, and the problems that the utilization efficiency of the energy-saving device for the high-temperature flue gas is too low and the excess flue gas cannot be fully utilized when the flue gas is too much are solved.

[0042] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any person skilled in the art can make equivalent replacements or changes to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered by the protection scope of the present application.

Claims

1. An energy-saving medium-frequency electric furnace for melting cast iron, comprising a base plate (1), characterized in that: The top of the base plate (1) is fixedly connected to two longitudinal slide rails (2), and the sides of the longitudinal slide rails (2) are provided with two transverse slide rails (3). The transverse slide rails (3) are fixedly connected to the base plate (1). The top of the longitudinal slide rails (2) is provided with a furnace body (4). The tops of the two adjacent transverse slide rails (3) are provided with heat insulation shells (5). The top of the furnace body (4) is fixedly connected to two first air outlet pipes (8). The bottom outer side of the heat insulation shell (5) is fixedly connected to a connecting pipe (9) that is compatible with the first air outlet pipes (8). The top of the base plate (1) is fixedly connected to a support plate (10). The outer side of the heat insulation shell (5) is fixedly connected to a support rod (11). The top of the base plate (1) is fixedly connected to a heating box (15). The side of the heating box (15) has two through holes and is fixedly connected to an inlet pipe (16) and an outlet pipe (17) respectively.

2. The energy-saving medium-frequency electric furnace for melting cast iron according to claim 1, characterized in that: The bottom of the furnace body (4) is fixedly connected to a plurality of first wheels (6), which are located inside the longitudinal slide rail (2). The bottom of the heat insulation shell (5) is fixedly connected to a plurality of second wheels (7), which are located inside the plurality of transverse slide rails (3).

3. The energy-saving medium-frequency electric furnace for melting cast iron according to claim 1, characterized in that: The side of the support plate (10) is rotatably connected to a rotating plate (12), and both ends of the rotating plate (12) are rotatably connected to connecting rods (13). The ends of the two connecting rods (13) away from the rotating plate (12) are respectively rotatably connected to two support rods (11).

4. The energy-saving medium-frequency electric furnace for melting cast iron according to claim 1, characterized in that: A hydraulic rod (14) is fixedly connected between the two support rods (11), and an extension rod is fixedly connected to the output shaft of the hydraulic rod (14).

5. The energy-saving medium-frequency electric furnace for melting cast iron according to claim 1, characterized in that: The heating box (15) is internally connected to a plurality of serpentine tubes (18), the ends of which are connected to each other.

6. The energy-saving medium-frequency electric furnace for melting cast iron according to claim 5, characterized in that: The heating box (15) has a through hole on its side and a second air outlet pipe (19) is fixedly connected thereto. The second air outlet pipe (19) is connected to one of the serpentine pipes (18). The heating box (15) has a through hole on its outer side and a three-way pipe (20) is fixedly connected thereto. The three-way pipe (20) is connected to one of the serpentine pipes (18).

7. The energy-saving medium-frequency electric furnace for melting cast iron according to claim 6, characterized in that: Both ends of the three-way pipe (20) away from the serpentine pipe (18) are fixedly connected to flexible hoses (21), and one end of each flexible hose (21) away from the three-way pipe (20) is connected to the outer top of the two insulation shells (5).

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