CN111811266A

CN111811266A - Energy-saving intermediate frequency electric furnace

Info

Publication number: CN111811266A
Application number: CN202010480661.4A
Authority: CN
Inventors: 葛体波; 王志狄; 刘克蒙
Original assignee: Ningbo Haitian Electric Furnace Technology Co ltd
Current assignee: Ningbo Haitian Electric Furnace Technology Co ltd
Priority date: 2020-05-30
Filing date: 2020-05-30
Publication date: 2020-10-23

Abstract

The invention relates to an energy-saving medium-frequency electric furnace, belonging to the technical field of medium-frequency electric furnaces, comprising a furnace frame, wherein a furnace lining is fixedly arranged in the furnace frame, an induction coil is sleeved on a fixing ring on the outer wall of the furnace lining, a first water inlet pipe and a first water outlet pipe are communicated with the induction coil, a magnet yoke is arranged between the induction coil and the furnace frame, the magnet yoke is fixedly connected with the furnace frame, a second water inlet pipe and a second water outlet pipe are communicated with the magnet yoke, a baffle plate is clamped between the magnet yoke and the induction coil, the induction coil is wound into a multi-turn coil by a rectangular copper pipe and is in a spiral shape, a cold air pipe is arranged in a thread clearance of the induction coil, the cold air pipe is arranged in a thread shape following the thread clearance of the induction coil, a heating chamber is arranged beside the furnace frame, one end of the cold air pipe is communicated with an air, the heating chamber is communicated with the balance tube, so that the invention has the advantages of saving energy and further improving the effect of radiating the induction coil.

Description

Energy-saving intermediate frequency electric furnace

Technical Field

The invention relates to the technical field of medium-frequency electric furnaces, in particular to an energy-saving medium-frequency electric furnace.

Background

The medium frequency electric furnace is a power supply device for converting power frequency 50HZ alternating current into medium frequency (above 300HZ to 10000 HZ), and is composed of frequency conversion device, furnace frame and furnace front control. The medium-frequency electric furnace utilizes a medium-frequency power supply to establish a medium-frequency magnetic field so as to generate an induced eddy current and heat the interior of a ferromagnetic material, thereby achieving the purpose of heating the material.

The existing Chinese patent with the reference publication number of CN106885466A discloses an energy-saving medium-frequency electric furnace, which comprises a base, wherein a controller is fixedly arranged on the front surface of the base, a box body is arranged at the top of the base, the bottom of the box body penetrates through the base and extends to the inside of the base, and a supporting plate is fixedly arranged at the top of the box body. This energy-conserving intermediate frequency electric stove, through the setting to first induction coil, second induction coil and third induction coil, when the part is in the state of difference, through the use that changes induction coil, thereby reach the effect that reduces the energy consumption, the extravagant condition of energy in the coil use has been avoided, the effectual utilization ratio that improves the energy like this, simultaneously through the setting of vacuum pump and heating pot, make heating pot surface be in the vacuum state, thereby heat loss in the heating pot has been avoided, thereby the electric energy utilization ratio has been improved, the production input has been reduced, the production income has been increased.

The above prior art solutions have the following drawbacks: the induction coil from inside to outside sets up the three-layer, and induction coil stacks up each other, and the electric stove is at the working process, and induction coil converts electromagnetic energy into heat energy, and conventional means is in the inside water-passing heat dissipation of induction coil, and inside and outside superimposed mode of setting has risen induction coil's temperature more, influences induction coil life.

Disclosure of Invention

The invention aims to provide an energy-saving medium-frequency electric furnace, which can save energy and further improve the effect of radiating an induction coil.

The above object of the present invention is achieved by the following technical solutions:

an energy-saving intermediate frequency electric furnace comprises a furnace frame, a furnace lining is fixedly arranged in the furnace frame, the top of the furnace lining is open, an induction coil is sleeved on a fixing ring on the outer wall of the furnace lining, a first water inlet pipe and a first water outlet pipe are communicated with the induction coil, a magnet yoke is arranged between the induction coil and the furnace frame, the magnet yoke is fixedly connected with the furnace frame, a second water inlet pipe and a second water outlet pipe are communicated with the magnet yoke, a blocking plate is clamped between the magnet yoke and the induction coil, the induction coil is formed by winding a rectangular copper pipe into a multi-turn coil and is in a spiral shape, a cold air pipe is arranged in a thread gap of the induction coil, the cold air pipe is in a thread shape and is in accordance with the thread gap of the induction coil, a temperature rising chamber is arranged beside the furnace frame, one end of the cold air pipe is communicated with an air pump, the air pump supplies outside air to enter the cold air pipe, the other end of the cold air pipe is communicated with the temperature rising chamber, the temperature rising chamber heats metal furnace burden before entering a furnace lining, and the temperature rising chamber is.

By adopting the technical scheme, the furnace frame is used for bearing other parts formed by the electric furnace, the furnace lining provides a metal furnace charge placing space, the induction coil converts electromagnetic energy into heat energy to melt the metal furnace charge in the furnace lining, when the electric furnace works, the first water inlet pipe and the second water inlet pipe continuously feed water, and the first water outlet pipe and the second water outlet pipe continuously discharge water simultaneously, so that the induction coil is cooled down and the magnetic yoke indirectly cools the induction coil, the magnetic yoke and the baffle plate play a role in supporting the framework, and simultaneously play a role in restraining magnetic flux leakage outside the induction coil to prevent the external metal furnace frame from heating, when the induction coil works, the air pump pumps external air into the cold air pipe, the air in the cold air pipe flows, simultaneously takes away heat emitted by part of the induction coil, plays a role in cooling the induction coil, and simultaneously plays an effect of filling up thread gaps of the induction coil, the heat and the magnetic flux of the induction coil are prevented from leaking outwards, and an external metal furnace frame is protected; the air in the air conditioning pipe carries the heat behind the induction coil and gets into the heating chamber, the indoor original air of equilibrium tube discharge intensification simultaneously, the high-temperature gas of the intraductal inflow of air conditioning is to the indoor metal furnace charge of treating melting of intensification in advance, reduces induction coil's acting, water cooling induction coil's quantity is alleviated to this device, utilize induction coil unnecessary heat to treat the metal furnace charge of melting in advance simultaneously and heat up, reach the energy can be saved and further promote the radiating effect to induction coil.

The invention is further configured to: the induction coil and the cold air pipe are in arc-shaped butt joint, the arc radian is matched with the outer wall of the cold air pipe, one side of the cold air pipe is abutted with the induction coil in a matched mode and seals the thread clearance of the induction coil, and the other side of the cold air pipe is abutted with the blocking plate.

Through adopting above-mentioned technical scheme, cold air duct one side and induction coil butt, opposite side and baffler butt, both sides are formed fixedly by the centre gripping, the circular-arc butt face of induction coil, increased with the butt area of cold air duct, the efficiency of the heat that induction coil distributed out has been taken away to gas in the air conditioning pipe has been promoted, when having improved induction coil cooling efficiency, the intensification effect to the indoor metal furnace charge that heaies up has been promoted, reach the energy can be saved and further promote the radiating effect to induction coil.

The invention is further configured to: the metal furnace heating chamber is characterized in that a storage rack is fixedly arranged in the heating chamber, a gap exists between the storage rack and the bottom of the heating chamber, metal furnace materials are placed on the storage rack, one end, entering the heating chamber, of the cold air pipe is fixed to the bottom of the heating chamber in a spiral shape, the end, located in the heating chamber, of the cold air pipe is in a plugging shape, and a plurality of vent holes are formed in the spiral cold air pipe located in the heating.

Through adopting above-mentioned technical scheme, the supporter supplies the metal furnace charge to place its top again, there is the clearance to leave the space for setting up of cold air duct bottom and intensification room bottom in the supporter, the cold air duct is the heliciform and fixes in the intensification room bottom, the area of cold air duct setting in the intensification room inside has been enlarged, seting up of air vent, the gas that makes to get into the intensification room is even jet form, the gas that has the high temperature rises from intensification room bottom, the intensification room is extruded to the original air of intensification room, it is full of mobile high-temperature gas to intensify indoor, carry out abundant heating to the metal furnace charge, promote the efficiency of heating up to the metal furnace charge, reach the effect of.

The invention is further configured to: every the air vent all is located the cold air duct top, and the supporter is netted supporter.

By adopting the technical scheme, the vent hole is positioned at the top of the cold air pipe, so that high-temperature gas is directly lifted upwards after being sprayed out from the vent hole, and waste caused by spraying at other angles is avoided; the supporter is net-shaped, so that the side wall of the metal furnace charge contacting the supporter can also contact with high-temperature gas sufficiently, the contact area of the metal furnace charge and the high-temperature gas is enlarged, and the efficiency of heating the metal furnace charge is improved.

The invention is further configured to: the top of the furnace frame is hinged with a furnace cover, the horizontal projection of the furnace cover completely covers the horizontal projection of the furnace lining, the top of the furnace cover is communicated with an air outlet pipe, the other end of the air outlet pipe is communicated with a cold air pipe, and the communicated part of the air outlet pipe and the cold air pipe is positioned outside the heating chamber.

Through adopting above-mentioned technical scheme, this device produces high-temperature gas at the during operation, is injectd the flow path by the bell, and high-temperature gas is used in the outlet duct gets into the air conditioning pipe, then gets into the intensification indoor, and to the metal furnace charge intensification of placing in the intensification room, reaches the effect of the energy can be saved.

The invention is further configured to: the air outlet pipe is provided with a filter box in communication with the cold air pipe, the filter box is filled with dust filter cotton, and the top of the filter box is hinged with a cleaning door.

Through adopting above-mentioned technical scheme, this device is being mingled with the metal dust in the high-temperature gas that produces at the during operation, and the setting of rose box makes the high-temperature gas that the outlet duct got into the cold air duct filtered by the dust filter pulp, avoids the pollution to the indoor air that heaies up to and the jam to the air vent, has guaranteed the effective work of air vent, and the setting of clearance door is convenient for regularly change the dust filter pulp in the rose box, guarantees the effective work of rose box.

The invention is further configured to: fixed first stationary blade that is provided with on the furnace lid, the furnace frame is close to the fixed second stationary blade that is provided with of furnace lid department, first stationary blade and the mutual dislocation set of second stationary blade, first stationary blade and second stationary blade are provided with two, and equal vertical setting, the fixed connecting rod that is provided with between the adjacent first stationary blade, the connecting rod runs through the second stationary blade, the relative connecting rod of second stationary blade rotates the setting, the fixed bracing piece that is provided with on the vertical lateral wall of furnace frame, the bracing piece slope sets up, the incline direction upwards sets up along keeping away from furnace frame direction slope, the furnace lid uses connecting rod length direction as the axis of rotation upset, lateral wall upset back and bracing piece top butt of furnace wall are.

Through adopting above-mentioned technical scheme, the second stationary blade forms fixed connection with connecting rod and furnace frame, first stationary blade makes the bell use connecting rod length direction as the axis of rotation, form articulatedly with the furnace frame, the opening of the bell of being convenient for, the setting of bracing piece, make the bell open the back can the butt at the bracing piece top, avoid bell top outlet duct to receive the extrusion of bell and furnace frame outer wall, the bracing piece plays the supporting role to the bell simultaneously, the atress of connecting rod has been reduced, the life of connecting rod has been prolonged.

The invention is further configured to: the top of the support rod is fixedly provided with a bearing plate which is matched with the top of the furnace cover in a modeling manner.

Through adopting above-mentioned technical scheme, the area of contact of bracing piece top and bell has been increased in the setting of loading board, makes better the playing the supporting role to the bell of bracing piece.

The invention is further configured to: the fixed blotter that is provided with on the loading board, the blotter that the blotter adopted flexible graphite packing material to make, the blotter is located the lateral wall of loading board and bell butt.

By adopting the technical scheme, the furnace cover is in rigid contact with the top of the supporting rod after being turned over, the buffering cushion plays a role in buffering, the mutual damage of the supporting rod and the furnace cover is reduced, the service lives of the supporting rod and the furnace cover are prolonged, and the buffering cushion made of the flexible graphite packing material has high temperature resistance at the temperature of-200-600 ℃ and is matched with the device.

The invention is further configured to: the balance pipe is located the vertical lateral wall top of intensification room with intensification room intercommunication one end, and intensification room top is provided with the door discharge, has seted up the ladder groove on the lateral wall that the door discharge is close to the intensification room, and the ladder groove is followed the place lateral wall periphery and is seted up a week, and the vertical lateral wall tip that the room of heating is close to the door discharge sets up the holding tank that corresponds, and the door discharge, the ladder groove closely supports with the holding tank adaptation and inlays, and the door discharge is kept away from intensification room one side and is.

Through adopting above-mentioned technical scheme, the connection mode that the door that opens adopts the ladder embedded has increased the gas tightness of door and intensification room lateral wall, guarantees that the indoor portion gas of intensification only flows out from the balance pipe, avoids opening door department gas leakage and causes the influence to surrounding environment or staff, and the setting up of handle is convenient for the staff and opens the door that opens through manipulator or other equipment, facilitates for the transport of the indoor portion metal furnace charge of intensification.

In summary, the invention includes at least one of the following beneficial technical effects:

1. the arrangement of the cold air pipe and the arrangement of the gas in the cold air pipe for preheating the metal furnace charge enable the device to achieve the effects of saving energy and further improving the heat dissipation effect on the induction coil;

2. the abutting positions of the induction coil and the cold air pipe are both arc-shaped, so that the abutting area of the induction coil and the cold air pipe is increased, and the heat dissipation effect of the induction coil is further improved;

3. the arrangement of the furnace cover and the air outlet pipe recycles high-temperature gas generated by the device during working, thereby achieving the effect of saving energy.

Drawings

FIG. 1 is a schematic view of the overall structure of the present embodiment;

FIG. 2 is a schematic view showing the internal structure of the hob in order to hide part of the structure of the hob; (the inlet pipe is thrown at the back)

FIG. 3 is a sectional view showing the structure of the cold air duct;

FIG. 4 is a schematic view showing a part of a junction between a furnace cover and a furnace frame;

fig. 5 is a partial sectional view showing the internal structure of the temperature rising chamber.

In the figure, 1, a furnace frame; 12. a second fixing sheet; 13. a connecting rod; 14. a support bar; 15. a carrier plate; 151. a cushion pad; 2. a furnace lining; 3. an induction coil; 31. a first water inlet pipe; 32. a first water outlet pipe; 4. a magnetic yoke; 41. a second water inlet pipe; 42. a second water outlet pipe; 5. a barrier plate; 6. a cold air pipe; 61. an air pump; 62. a vent hole; 7. heating the greenhouse; 71. a balance tube; 72. a rack; 73. opening the door; 731. a stepped groove; 732. accommodating grooves; 733. a handle; 8. a furnace cover; 81. an air outlet pipe; 82. a first fixing sheet; 9. a filter box; 91. dust filter cotton; 92. and (6) cleaning the door.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, the energy-saving intermediate frequency electric furnace disclosed by the invention comprises a furnace frame 1, wherein the furnace frame 1 is fixedly arranged on a base station provided by a factory building through bolts, a furnace lining 2 is fixedly arranged in the furnace frame 1, an induction coil 3 is sleeved outside the furnace lining 2, a plurality of magnet yokes 4 are arranged between the induction coil 3 and the furnace frame 1, one side of each magnet yoke 4, which is far away from the induction coil 3, is fixedly connected with the furnace frame 1 through a bolt, a baffle plate 5 is clamped between each magnet yoke 4 and the induction coil 3, a furnace cover 8 is hinged to the top of the furnace frame 1, the top of the furnace cover 8 is communicated with an air outlet pipe 81, one end of the air outlet pipe 81, which is far away from the furnace cover 8, is communicated with a heating chamber 7, the heating chamber 7 is fixedly arranged on the base station beside the furnace frame 1, the heating chamber 7 is communicated with a balance pipe 71, a metal furnace, starting the device, the induction coil 3 converts electromagnetic energy into heat energy to melt the metal furnace charge in the furnace lining 2, a large amount of hot air can be generated in the melting process of the metal furnace charge, the hot air is collected through the furnace cover 8 and passes through the air outlet pipe 81 to enter the heating chamber 7 to heat the metal furnace charge to be melted in the constant temperature chamber, the metal furnace charge heated in the constant temperature chamber is melted after the metal furnace charge in the furnace lining 2 is melted, the working time of the induction coil 3 is saved, and the device achieves the effect of saving energy.

Referring to fig. 2 and 3, an induction coil 3 is a multi-turn coil wound by a rectangular copper pipe and is in a spiral shape, the induction coil 3 is communicated with a first water inlet pipe 31 and a first water outlet pipe 32, a cold air pipe 6 is arranged in a thread gap of the induction coil 3, the cold air pipe 6 is in a thread shape following the thread gap of the induction coil 3, the abutting parts of the induction coil 3 and the cold air pipe 6 are in arc shapes, the arc radian is matched with the outer wall of the cold air pipe 6, one side of the cold air pipe 6 is in adaptive abutting with the induction coil 3 and seals the thread gap of the induction coil 3, the other side of the cold air pipe 6 is abutted with a baffle plate 5 and is clamped and fixed by the baffle plate 5 and the induction coil 3, the vacant part of the thread gap of the induction coil 3, namely the vacant part between turns of the induction coil 3 is coated with refractory mortar, the surface of the induction coil 3 is coated with high-strength insulating paint and is wrapped, referring to fig. 1 again, one end of the cold air pipe 6 is communicated with an air pump 61, the air pump 61 pumps outside air into the cold air pipe 6, the other end of the cold air pipe 6 is communicated with the warming chamber 7, when the device works, the induction coil 3 converts electromagnetic energy into heat energy to melt metal furnace charge in the furnace lining 2, meanwhile, the first water inlet pipe 31 and the first water outlet pipe 32 fill flowing cold water into the induction coil 3, the cold water cools the induction coil 3 to ensure the normal operation of the induction coil 3, meanwhile, the air pump 61 pumps outside air into the cold air pipe 6 to make the cold air inside the cold air pipe 6 flow, the joint of the cold air pipe 6 and the induction coil 3 is arc-shaped, the contact area between the cold air pipe 6 and the induction coil 3 is increased, so that the cold air pipe 6 receives more heat transferred by the induction coil 3 and is carried out by the flowing cold air, the induction coil 3 is cooled, gas with high temperature in the cold air pipe 6 enters the heating chamber 7, and metal furnace burden to be smelted placed in the heating chamber 7 is preheated, so that the device can save energy and further improve the effect of cooling the induction coil 3.

Referring to fig. 2, all the intercommunication has second inlet tube 41 and second outlet pipe 42 on every yoke 4, at this device during operation, second inlet tube 41 and second outlet pipe 42 operate simultaneously, make to be full of mobile cold water in the yoke 4, yoke 4 and baffler 5 play the effect of braced skeleton, still play the effect of the outside scattered magnetic flux of restraint induction coil 3 simultaneously, with preventing that outside metal furnace frame 1 from generating heat, the cold water of flow has the radiating effect to induction coil 3 in the yoke 4, the cold water of flow passes through yoke 4 transmission and absorbs the heat, thereby have induction coil 3 partial heat, reach and further promote the radiating effect to induction coil 3.

Referring to fig. 4, two first fixing plates 82 are fixedly arranged on the furnace cover 8, the furnace frame 1 is close to the furnace cover 8, namely, two second fixing plates 12 are fixedly arranged on the top of the furnace frame 1, the first fixing plates 82 are both positioned between the adjacent second fixing plates 12, the first fixing plates 82 and the second fixing plates 12 are both vertically arranged, a connecting rod 13 is fixedly arranged between the adjacent first fixing plates 82, the connecting rod 13 penetrates through the two second fixing plates 12, the second fixing plates 12 are both rotatably arranged relative to the connecting rod 13, a supporting rod 14 is fixedly arranged on the vertical side wall of the furnace frame 1 close to the connecting rod 13, the supporting rod 14 is rectangular strip-shaped and obliquely arranged, the oblique direction is obliquely upwards along the direction away from the furnace frame 1, a bearing plate 15 is fixedly arranged on the top of the supporting rod 14, the shape of the bearing plate 15 is matched with the shape on the top of, the buffer pad 151 is made of flexible graphite packing materials, the temperature of the buffer pad 151 made of the materials can be between 200 ℃ below zero and 600 ℃, and the buffer pad has high temperature resistance and is matched with the device; buffer pad 151 is located bell 8 upset back, loading board 15 is close to on the lateral wall of bell 8, bell 8 uses connecting rod 13 length direction to keep away from the upset of 1 orientation of furnace frame for the rotation axial, bell 8 keeps away from behind the lateral wall upset of furnace wall 2 with the buffer pad 151 butt at bracing piece 14 top, avoid bell 8 top outlet duct 81 to receive the extrusion of bell 8 with 1 outer wall of furnace frame, bracing piece 14 and backup pad play the supporting role to bell 8 simultaneously, the atress of connecting rod 13 has been reduced, connecting rod 13's life has been prolonged, simultaneously buffer pad 151 has slowed down behind the bell 8 upset with the impulsive force of loading board 15, the life of bracing piece 14 and loading board 15 has been prolonged.

Referring to fig. 5, the warming chamber 7 is a rectangular box, a rack 72 is fixedly arranged inside the warming chamber 7, the rack 72 is a rectangular net rack 72, the rack 72 is used for placing metal furnace materials, a gap exists between the rack 72 and the bottom of the warming chamber 7, one end of the cold air pipe 6 communicated with the warming chamber 7 extends into the warming chamber 7 and is fixed at the bottom of the warming chamber 7 in a threaded manner, the part of the cold air pipe 6 positioned inside the warming chamber 7 is abutted against the bottom of the warming chamber 7, the end part of the cold air pipe 6 positioned inside the warming chamber 7 is in a sealed state, a plurality of vent holes 62 are arranged on the top of the cold air pipe 6 in the warming chamber 7, the adjacent vent holes 62 are arranged at equal intervals, the threaded plate of the cold air pipe 6 is arranged at the bottom of the warming chamber 7, the length of the cold air pipe 6 entering the warming chamber 7 is increased, namely the number of the vent holes 62 is increased, so that the high-temperature gas, the contact area between the metal furnace burden and the metal furnace burden is increased, and the preheating efficiency of the metal furnace burden is improved; one end that outlet duct 81 is close to rising room 7 communicates with cold air duct 6, outlet duct 81 and the fixed filter box 9 that sets up of cold air duct 6 intercommunication department, filter box 9 top is articulated to have seted up clearance door 92, filter box 9 is inside to have placed dust filter pulp 91, be mingled with metal dust in the high-temperature gas who rises in the furnace wall 2, metal dust follows high-temperature gas and passes through in outlet duct 81 gets into filter box 9, converge in cold air duct 6 after being filtered by dust filter pulp 91, get into rising room 7 afterwards, reach the effect to the heating of metal furnace charge, the energy has been saved simultaneously, the seting up of clearance door 92, the staff of being convenient for regularly replaces dust filter pulp 91 in the filter box 9, guarantee the effective performance of filter box 9 effect.

Referring to fig. 5, the communicating part of the balance pipe 71 and the warming chamber 7 is located on the vertical side wall of the warming chamber 7 and located at the top of the vertical side wall, the top of the warming chamber 7 is provided with an opening door 73, the side wall of the opening door 73 close to the warming chamber 7 is provided with a stepped groove 731, the stepped groove 731 is formed in a circle along the periphery of the side wall, the top of the vertical side wall of the warming chamber 7 is correspondingly provided with an accommodating groove 732, the opening door 73 is lowered, finally the stepped groove 731 is tightly abutted to the accommodating groove 732, the embedded connection mode of the opening door 73 and the warming chamber 7 is completed, the top of the opening door 73 is fixedly provided with a handle 733, a worker grasps the handle 733 by using the existing technology such as a mechanical hand and opens the opening door 73, the metal furnace burden preheated in the warming chamber 7 is placed in the furnace lining 2 while avoiding the high-temperature, the air tightness in the warming chamber 7 is improved, high-temperature gas in the warming chamber 7 is prevented from leaking from the joint of the opening door 73 and the vertical side wall of the warming chamber 7, and the gas only circulates from the balance pipe 71 to the next process, so that the temperature of the working environment is ensured to be normal.

The implementation principle of the embodiment is as follows: placing metal furnace charge in a furnace lining 2, closing a furnace cover 8, starting the device, simultaneously operating a first water inlet pipe 31, a first water outlet pipe 32, a second water inlet pipe 41, a second water outlet pipe 42 and an air pump 61 simultaneously, so that electromagnetic energy is converted into heat energy by an induction coil 3 to melt the metal furnace charge in the lining, the water is fed into the first water inlet pipe 31 and discharged from the first water outlet pipe 32 to fill flowing cold water in the induction coil 3, the water is fed into the second water inlet pipe 41 and discharged from the second water inlet pipe 41 to fill flowing cold water in a magnet yoke 4, the air pump 61 sends an external air pump 61 into a cold air pipe 6 to enable the cold air in the cold air pipe 6 to be flowing cold air, and the cold water flowing in the induction coil 3, the cold water flowing in the magnet yoke 4 and the cold air flowing in the cold air pipe 6 to dissipate heat of the induction; the high-temperature gas in the cold air pipe 6 then enters the heating chamber 7, and the furnace cover 8 collects the high-temperature gas generated in the furnace lining 2, and the high-temperature gas is filtered by the filter box 9 through the gas outlet pipe 81 and converged with the cold air pipe 6, and finally enters the heating chamber 7 together, so that the metal furnace burden in the heating chamber 7 is preheated, and the device achieves the energy-saving effect and further improves the effect of radiating the induction coil 3.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides an energy-saving intermediate frequency electric stove, including furnace frame (1), furnace frame (1) internal fixation is provided with furnace wall (2), furnace wall (2) are top opening form, the solid fixed ring cover of furnace wall (2) outer wall has induction coil (3), the intercommunication has first inlet tube (31) and first outlet pipe (32) on induction coil (3), be provided with yoke (4) between induction coil (3) and furnace frame (1), yoke (4) and furnace frame (1) fixed connection, the intercommunication has second inlet tube (41) and second outlet pipe (42) on yoke (4), the centre gripping has baffler (5) between yoke (4) and induction coil (3), its characterized in that: the induction coil (3) is formed by winding a rectangular copper pipe into a multi-turn coil and is in a spiral shape, a cold air pipe (6) is arranged in a thread gap of the induction coil (3), the cold air pipe (6) is in thread shape arrangement along with the thread gap of the induction coil (3), a heating chamber (7) is arranged beside the furnace frame (1), one end of the cold air pipe (6) is communicated with an air pump (61), the air pump (61) supplies outside air to enter the cold air pipe (6), the other end of the cold air pipe (6) is communicated with the heating chamber (7), the heating chamber (7) supplies metal furnace burden to heat before entering the furnace lining (2), and the heating chamber (7) is communicated with a balance pipe (71).

2. The energy-saving medium frequency electric furnace according to claim 1, characterized in that: induction coil (3) and cold air pipe (6) butt department all are circular-arcly, and the circular arc radian sets up with cold air pipe (6) outer wall adaptation, and cold air pipe (6) one side just plugs induction coil (3)'s screw thread clearance with induction coil (3) adaptation butt, cold air pipe (6) opposite side and baffler (5) butt.

3. The energy-saving medium frequency electric furnace according to claim 1, characterized in that: the metal furnace heating system is characterized in that a storage rack (72) is fixedly arranged in the heating chamber (7), a gap exists between the storage rack (72) and the bottom of the heating chamber (7), metal furnace materials are placed on the storage rack (72), one end, entering the heating chamber (7), of the cold air pipe (6) is fixed to the bottom of the heating chamber (7) in a spiral mode, the end, located in the heating chamber (7), of the cold air pipe (6) is in a plugging mode, and a plurality of vent holes (62) are formed in the spiral cold air pipe (6) located in the heating chamber (7).

4. An energy-saving medium frequency electric furnace according to claim 3, characterized in that: each vent hole (62) is positioned at the top of the cold air pipe (6), and the shelf (72) is a net-shaped shelf (72).

5. The energy-saving medium frequency electric furnace according to claim 1, characterized in that: the top of the furnace frame (1) is hinged with a furnace cover (8), the horizontal projection of the furnace cover (8) completely covers the horizontal projection of the furnace lining (2), the top of the furnace cover (8) is communicated with an air outlet pipe (81), the other end of the air outlet pipe (81) is communicated with the cold air pipe (6), and the communicated part of the air outlet pipe (81) and the cold air pipe (6) is positioned outside the heating chamber (7).

6. The energy-saving medium frequency electric furnace according to claim 5, characterized in that: a filter box (9) is arranged at the communication position of the air outlet pipe (81) and the air cooling pipe (6), dust filter cotton (91) is filled in the filter box (9), and a cleaning door (92) is hinged to the top of the filter box (9).

7. The energy-saving medium frequency electric furnace according to claim 5, characterized in that: a first fixing plate (82) is fixedly arranged on the furnace cover (8), a second fixing plate (12) is fixedly arranged on the furnace frame (1) close to the furnace cover (8), the first fixing plate (82) and the second fixing plate (12) are arranged in a staggered manner, two first fixing plates (82) and two second fixing plates (12) are arranged, and equal vertical setting, fixed connecting rod (13) that is provided with between adjacent first stationary blade (82), connecting rod (13) run through second stationary blade (12), second stationary blade (12) relative connecting rod (13) rotate the setting, fixed bracing piece (14) that are provided with on the vertical lateral wall of furnace frame (1), bracing piece (14) slope sets up, the slope direction upwards sets up along keeping away from furnace frame (1) direction slope, bell (8) use connecting rod (13) length direction to overturn as the axis of rotation, bell (8) keep away from behind the lateral wall upset of furnace wall (2) with bracing piece (14) top butt.

8. The energy-saving medium frequency electric furnace according to claim 7, characterized in that: the top of the support rod (14) is fixedly provided with a bearing plate (15), and the bearing plate (15) is matched with the top of the furnace cover (8) in shape.

9. The energy-saving medium frequency electric furnace according to claim 8, characterized in that: fixed blotter (151) that is provided with on loading board (15), blotter (151) that blotter (151) adopted flexible graphite packing material to make, blotter (151) are located the lateral wall of loading board (15) and bell (8) butt.

10. The energy-saving medium frequency electric furnace according to claim 1, characterized in that: balance pipe (71) and rising greenhouse (7) intercommunication one end are located the vertical lateral wall top in rising greenhouse (7), rising greenhouse (7) top is provided with door (73) of opening, door (73) of opening has seted up ladder groove (731) on being close to the lateral wall in rising greenhouse (7), ladder groove (731) are seted up a week along place lateral wall periphery, the vertical lateral wall tip that rises greenhouse (7) are close to door (73) of opening has seted up corresponding holding tank (732), door (73) of opening are closed, ladder groove (731) closely support with holding tank (732) adaptation and inlay, door (73) of opening are kept away from rising greenhouse (7) one side and are fixed handle (733).