CN213747947U

CN213747947U - Intermediate frequency electric furnace with high-efficient flue gas circulation function

Info

Publication number: CN213747947U
Application number: CN202022889953.1U
Authority: CN
Inventors: 罗元烺; 罗华烺; 黄光明; 高健
Original assignee: Zhijiang Xinhao Machinery Co ltd
Current assignee: Zhijiang Xinhao Machinery Co ltd
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2021-07-20
Anticipated expiration: 2030-12-04

Abstract

The utility model discloses an intermediate frequency electric stove with high-efficient flue gas circulation function, the induction cooker comprises a cooker bod, the fixed cover in furnace body top has connect the fire door and has held up the piece, the furnace body both sides all are equipped with telescopic cylinder, telescopic cylinder upper end fixedly connected with fixed plate, two common fixedly connected with connecting block between the fixed plate, the connecting block is located the furnace body top, connecting block lower extreme fixedly connected with bell, the flue gas accumulator has been seted up to the bell lower extreme, connecting block upper end central point puts fixed mounting has the fan, the negative pressure end and the flue gas accumulator upper end intercommunication of fan, the output and the exhaust pipe intercommunication of fan, the bell bottom just has seted up the flexible groove of annular in flue gas accumulator outside position, sliding connection has the annular to insert the frame in the flexible inslot of annular. The utility model discloses lift bell that can be free has good heat insulating ability, has high temperature flue gas recovery speed piece, characteristics that conveying efficiency is high simultaneously.

Description

Intermediate frequency electric furnace with high-efficient flue gas circulation function

Technical Field

The utility model relates to a cast iron equipment technical field especially relates to an intermediate frequency electric stove with high-efficient flue gas circulation function.

Background

The medium-frequency electric furnace is an important device for producing molten cast iron by casting, and flue gas discharged by the medium-frequency electric furnace has very high temperature and is generally directly discharged, so that waste of heat energy is caused.

The energy-saving intermediate frequency electric furnace for melting cast iron that present patent publication No. CN207439178U provided has the effect that the high temperature flue gas that utilizes the intermediate frequency electric furnace to produce carries out waste heat recovery to purify the flue gas and discharge, but its exhaust pipe and furnace body top lug connection, and then can't throw in the raw materials from the furnace body top, and when carrying out flue gas recovery, can only utilize flue gas self to flow and retrieve, recovery efficiency is lower.

Therefore, the intermediate frequency electric furnace with the efficient flue gas circulation function is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing an intermediate frequency electric furnace with a high-efficiency flue gas circulation function.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a medium-frequency electric furnace with a high-efficiency flue gas circulation function comprises a furnace body, wherein a furnace mouth linking block is fixedly sleeved at the top of the furnace body, telescopic cylinders are arranged on two sides of the furnace body, fixed plates are fixedly connected to the upper ends of the telescopic cylinders, a connecting block is fixedly connected between the two fixed plates, the connecting block is positioned above the furnace body, a furnace cover is fixedly connected to the lower end of the connecting block, a flue gas recovery tank is arranged at the lower end of the furnace cover, a fan is fixedly arranged at the central position of the upper end of the connecting block, the negative pressure end of the fan is communicated with the upper end of the flue gas recovery tank, the output end of the fan is communicated with a flue gas discharge pipeline, an annular telescopic tank is arranged at the bottom of the furnace cover and at the outer side of the flue gas recovery tank, an annular inserting frame is slidably connected in the annular telescopic tank, a plurality of first springs are fixedly connected between the annular inserting frame and the inner fixed wall of the annular telescopic tank, the utility model discloses a flexible groove of bell, including bell, movable rod, the frame is inserted to the annular, the bell outside and correspond the position in annular flexible groove and evenly seted up a plurality of movable groove of circumference, sliding connection has the movable rod in the movable groove, the frame outside top fixed connection is inserted in the annular to the one end of movable rod, and is a plurality of the common fixedly connected with annular piece of movable groove is kept away from to the movable rod, spacing slot has all been seted up to both ends below about the annular piece inner wall, annular piece lower extreme just is equipped with the movable block in spacing slot below position, the spout has just been seted up in movable block top position to annular piece bottom, sliding connection has the slider in the spout, common fixedly connected with second spring between the one side inner wall that slider and spout are close to spacing slot, slider lower extreme and movable block fixed connection.

Preferably, the top view size of the furnace cover is the same as the top view size of the furnace mouth holding block.

Preferably, an annular slot is formed in the upper end of the fire door holding block and in the position corresponding to the annular telescopic slot.

Preferably, a plurality of air inlet holes communicated with the annular telescopic groove are formed in the inner wall of the flue gas recovery groove and in the corresponding position of the movable groove, and the air inlet holes are gradually and obliquely downwards arranged from the annular telescopic groove to the flue gas recovery groove.

Preferably, the outer side of the fire door holding block is fixedly connected with a limiting insertion block at a position corresponding to the limiting slot, and an inclined plane is arranged at the upper end of the limiting insertion block.

Preferably, the cross sections of the sliding groove and the sliding block are both in a T-shaped structure.

Compared with the prior art, the device has the advantages that:

through the bell that sets up the liftable, can not influence putting into and taking out of raw materials, when carrying out the founding of raw materials, the bell lid is established on the fire door links up the piece, play good thermal insulation performance, accelerate rising of the inside temperature of furnace body, after reaching the uniform temperature, through pushing down the annular piece, make it drive the annular and insert the frame and insert in the annular slot, then can make the fresh air inlet pass through annular flexible groove and movable groove and external intercommunication, accessible fresh air inlet supplyes the internal intensification of furnace with external air when fan work carries out the high temperature flue gas and heats up, have high temperature flue gas recovery speed piece, characteristics that conveying efficiency is high.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a front perspective view of an intermediate frequency electric furnace with a high-efficiency flue gas circulation function according to the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

fig. 3 is an enlarged schematic view of a portion B in fig. 2.

In the figure: the furnace comprises a furnace body 1, a furnace mouth holding block 2, a telescopic cylinder 3, a fixed plate 4, a connecting block 5, a furnace cover 6, a flue gas recovery groove 7, a fan 8, a smoke exhaust pipeline 9, an annular telescopic groove 10, an annular inserting frame 11, a first spring 12, an air inlet hole 13, a movable groove 14, a movable rod 15, an annular block 16, a limit inserting groove 17, a limit inserting block 18, a movable block 19, a sliding groove 20, a sliding block 21, a second spring 22 and an annular inserting groove 23.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a medium frequency electric furnace with high efficiency flue gas circulation function comprises a furnace body 1, a furnace mouth connecting block 2 is fixedly sleeved at the top of the furnace body 1, telescopic cylinders 3 are respectively arranged at two sides of the furnace body 1, a fixed plate 4 is fixedly connected at the upper end of each telescopic cylinder 3, a connecting block 5 is fixedly connected between the two fixed plates 4 together, the connecting block 5 is positioned above the furnace body 1, a furnace cover 6 is fixedly connected at the lower end of the connecting block 5, the telescopic cylinders 3 can lift the furnace cover 6 to facilitate feeding and casting, a flue gas recovery tank 7 is arranged at the lower end of the furnace cover 6, a fan 8 is fixedly arranged at the central position of the upper end of the connecting block 5, the negative pressure end of the fan 8 is communicated with the upper end of the flue gas recovery tank 7, the output end of the fan 8 is communicated with a smoke exhaust pipe 9, the smoke exhaust pipe 9 is communicated with a waste heat recovery device (the waste heat recovery device is the prior art, which is not explained here), an annular telescopic groove 10 is formed in the bottom of the furnace cover 6 and at the outer side of the flue gas recovery groove 7, an annular insertion frame 11 is connected in the annular telescopic groove 10 in a sliding mode, a plurality of first springs 12 are fixedly connected between the annular insertion frame 11 and the inner fixed wall of the annular telescopic groove 10 together, when the first springs 12 are in an initial state, the annular insertion frame 11 is contracted in the annular telescopic groove 10 and blocks an air inlet 13, a plurality of movable grooves 14 are uniformly formed in the outer side of the furnace cover 6 and on the corresponding positions of the annular telescopic groove 10 in the circumferential direction, movable rods 15 are connected in the movable grooves 14 in a sliding mode, one ends of the movable rods 15 are fixedly connected above the outer side of the annular insertion frame 11, annular blocks 16 are fixedly connected together at one ends of the movable rods 15 far away from the movable grooves 14, limiting slots 17 are formed below the left end and the right end of the inner wall of each annular block 16, and moving blocks 19 are arranged at the lower ends of the annular blocks 16 and below the limiting slots 17, the bottom of the annular block 16 and the position above the moving block 19 are provided with a sliding groove 20, the sliding groove 20 is connected with a sliding block 21 in a sliding manner, a second spring 22 is fixedly connected between the sliding block 21 and the inner wall of the sliding groove 20 close to one side of the limiting slot 17, and the lower end of the sliding block 21 is fixedly connected with the moving block 19.

The overlooking size of the furnace cover 6 is the same as the overlooking size of the furnace mouth holding block 2, so that the furnace cover 6 is directly covered on the furnace mouth holding block 2 conveniently.

An annular slot 23 is arranged at the upper end of the fire door holding block 2 and at the corresponding position of the annular telescopic groove 10, and is used for inserting the downward moving annular inserting frame 11 and preventing the smoke from leaking from the gap.

A plurality of air inlet holes 13 communicated with the annular telescopic groove 10 are formed in the inner wall of the smoke recycling groove 7 and in the corresponding position of the movable groove 14, the air inlet holes 13 are gradually and downwards inclined from the annular telescopic groove 10 to the smoke recycling groove 7, and after the annular insertion frame 11 moves downwards, the air inlet holes 13 are communicated with the outside through the movable groove 14 and the annular telescopic groove 10 and used for supplementing air.

The outer side of the fire door holding block 2 is fixedly connected with a limiting insertion block 18 at the corresponding position of the limiting insertion slot 17, and the upper end of the limiting insertion block 18 is provided with an inclined plane which is convenient to insert into the limiting insertion slot 17 for limiting work.

The cross sections of the sliding groove 20 and the sliding block 21 are both in a T-shaped structure, so that the stable movement of the sliding groove 20 of the moving block 19 is facilitated.

When the utility model is used, after the raw materials are put into the furnace body 1 for casting, the furnace cover 6 is driven to be put down through the two telescopic cylinders 3, the furnace cover is arranged on the furnace mouth linking block 2, at the moment, the fan 8 does not work, the furnace cover 6 plays a role of surrounding, the rise of the internal temperature of the furnace body 1 is accelerated, the melting of the raw materials is accelerated, when the temperature is raised to a certain degree, the fan 8 is opened, the annular block 16 is pushed downwards, the annular block 16 moves downwards in the movable groove 14 through the movable rod 15 to drive the annular insertion frame 11 to move downwards, the first spring 12 is stretched, the lower end of the annular insertion frame 11 is inserted into the annular slot 23, in the process of moving the annular block 16 downwards, the movable block 19 contacts the inclined plane of the limiting insertion block 18, the force is applied to move towards one side far away from the limiting slot 17, the second spring 22 is stretched, the second spring 22 is reset under the elastic force action of the second spring 22 after the limiting insertion block 18 is inserted into the limiting slot 17, the first spring 12 is kept in a stretching state, the air inlet 13 is communicated with the outside through the annular telescopic groove 10 and the movable groove 14, when the fan 8 works, high-temperature flue gas in the flue gas recovery groove 7 is rapidly conveyed into the smoke exhaust pipeline 9, meanwhile, outside air is supplemented into the furnace body 1 through the movable groove 14, the annular telescopic groove 10 and the air inlet 13, air with lower temperature automatically moves downwards into the furnace body 1, enters the flue gas recovery groove 7 after being heated, and is conveyed into the smoke exhaust pipeline 9 again to the waste heat recovery system, so that the heat energy is utilized to achieve the energy-saving effect, and the first spring has the characteristics of speed recovery block and high conveying efficiency.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The intermediate frequency electric furnace with the efficient flue gas circulation function comprises a furnace body (1) and is characterized in that a furnace mouth holding block (2) is fixedly sleeved at the top of the furnace body (1), telescopic cylinders (3) are arranged on two sides of the furnace body (1), a fixing plate (4) is fixedly connected to the upper end of each telescopic cylinder (3), a connecting block (5) is fixedly connected between the two fixing plates (4) together, the connecting block (5) is positioned above the furnace body (1), a furnace cover (6) is fixedly connected to the lower end of the connecting block (5), a flue gas recovery tank (7) is arranged at the lower end of the furnace cover (6), a fan (8) is fixedly mounted at the central position of the upper end of the connecting block (5), the negative pressure end of the fan (8) is communicated with the upper end of the flue gas recovery tank (7), and the output end of the fan (8) is communicated with a flue gas exhaust pipeline (9), an annular telescopic groove (10) is formed in the bottom of the furnace cover (6) and at the outer side of the flue gas recovery groove (7), an annular inserting frame (11) is connected in the annular telescopic groove (10) in a sliding mode, a plurality of first springs (12) are fixedly connected between the annular inserting frame (11) and the inner fixed wall of the annular telescopic groove (10) jointly, a plurality of movable grooves (14) are uniformly formed in the outer side of the furnace cover (6) and at the corresponding positions of the annular telescopic groove (10) in the circumferential direction, movable rods (15) are connected in the movable grooves (14) in a sliding mode, one end of each movable rod (15) is fixedly connected above the outer side of the annular inserting frame (11), an annular block (16) is fixedly connected to one end, far away from the movable grooves (14), of the movable rods (15) jointly, limiting slots (17) are formed in the lower portions of the left end and the right end of the inner wall of each annular block (16), and a moving block (19) is arranged at the lower end of each annular block (16) and below the limiting slot (17), the sliding block is characterized in that a sliding groove (20) is formed in the bottom of the annular block (16) and above the moving block (19), a sliding block (21) is connected in the sliding groove (20) in a sliding mode, a second spring (22) is fixedly connected between the sliding block (21) and the inner wall of one side, close to the limiting slot (17), of the sliding groove (20) in a common mode, and the lower end of the sliding block (21) is fixedly connected with the moving block (19).

2. The medium frequency electric furnace with high flue gas circulation function according to claim 1, wherein the furnace cover (6) has the same size as the top view of the furnace mouth block (2).

3. The medium frequency electric furnace with the function of high-efficiency flue gas circulation according to claim 1, characterized in that the upper end of the furnace mouth holding block (2) is provided with an annular slot (23) at the corresponding position of the annular telescopic groove (10).

4. The medium frequency electric furnace with the function of high-efficiency flue gas circulation according to claim 1, wherein a plurality of air inlet holes (13) communicated with the annular telescopic groove (10) are formed in the inner wall of the flue gas recovery groove (7) and at the corresponding positions of the movable groove (14), and the air inlet holes (13) are gradually and downwards inclined from the annular telescopic groove (10) to the flue gas recovery groove (7).

5. The medium frequency electric furnace with the function of high-efficiency flue gas circulation according to claim 1, wherein a limit insert block (18) is fixedly connected to the outer side of the fire door holding block (2) and the corresponding position of the limit slot (17), and an inclined surface is arranged at the upper end of the limit insert block (18).

6. The medium-frequency electric furnace with the function of high-efficiency flue gas circulation according to claim 1, wherein the cross sections of the sliding chute (20) and the sliding block (21) are both in a T-shaped structure.