CN209857643U - Industrial electric furnace with bottom opening and closing structure - Google Patents

Abstract

The utility model discloses an industrial electric stove with bottom switching structure, its technical scheme main points are: including the furnace body, the furnace body is fixed subaerial, is located below the furnace body subaerial and is equipped with the pit with external intercommunication, and swivelling joint has the revolving stage on the bottom surface of pit, and the rotation center of revolving stage is located outside the furnace body, is fixed with the work piece platform on the revolving stage, and the quantity of work piece platform is two and the symmetry setting, is fixed with the lift cylinder between work piece platform and the revolving stage, is equipped with the rotary device of rotatory revolving stage in the pit, is equipped with the fixing device of fixed revolving stage in the pit.

Description

Industrial electric furnace with bottom opening and closing structure

Technical Field

The utility model relates to an industrial electric stove field, more specifically say, it relates to industrial electric stove with bottom switching structure.

Background

The heat treatment furnace is an electric furnace or a fuel furnace for heating and heat treating workpieces in the industrial heat treatment process. The heat treatment comprises annealing, normalizing, quenching and tempering, and has large requirement on heat energy and high requirement on the stability of the heat energy. Therefore, the energy-saving and heat-insulating of the industrial electric furnace is very important, and the opening and closing of the furnace door of the industrial electric furnace are directly related to the heat loss in the industrial electric furnace, so that the arrangement, opening and closing of the furnace door are important component structures of the industrial electric furnace.

An energy-conserving industrial electric stove has been introduced in the utility model patent of patent No. CN201720791866, including furnace body and furnace gate, the furnace body is fixed subaerial, the subaerial pit that is equipped with that the furnace chamber of furnace body corresponds, be fixed with elevating gear on the pit, the fixed or liftable device setting of feed platform is by elevating gear, be fixed with on two walls of pit and push away the material cylinder, the user places the work piece at the feed bench, promote the work piece through pushing away the material cylinder and move under to the furnace body, inside rethread elevating gear risees the feed platform to airtight furnace body, realize that the bottom of furnace body opens the door, reduce the heat loss because of the furnace body opens the door.

However, in the structure, the material pushing cylinder for taking out the workpiece is arranged far away from the opening of the pit communicated with the outside, the temperature of the set point is influenced by the residual heat of the furnace body to be higher, once the material pushing cylinder breaks down, the maintenance is very difficult, and the workpiece also moves to the opening of the pit and is inconvenient to take out.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an industrial electric furnace with bottom switching structure, can conveniently maintain the bottom furnace gate to prior art not enough.

The above technical purpose of the present invention can be achieved by the following technical solutions: industrial electric stove with bottom switching structure, including the furnace body, the furnace body is fixed subaerial, subaerial being located under the furnace body and being equipped with the pit with external intercommunication, swivelling joint has the revolving stage on the bottom surface of pit, the center of rotation of revolving stage is located outside the furnace body, be fixed with the work piece platform on the revolving stage, the quantity of work piece platform is two and the symmetry sets up, be fixed with the lift cylinder between work piece platform and the revolving stage, be equipped with the rotary device of rotatory revolving stage in the pit, be equipped with the fixing device of fixed revolving stage in the pit.

Through adopting above-mentioned technical scheme, the user places at the work piece bench at subaerial work piece, start lift cylinder and reduce work piece bench height, through rotary device rotation revolving stage, the work piece bench that makes the work piece placed is rotatory under the furnace body, through the fixed revolving stage of fixing device, let the work piece bench rise and send the work piece into the furnace body inside and carry out the heating thermal treatment through lift cylinder, treat that it sends back the work piece ground with all the same operations except that it behind the reverse rotation revolving stage after the thermal treatment finishes, thereby realize reducing the heat energy leakage loss of work piece material loading unloading in-process, because the vertical face in centre of rotation place of revolving stage is located outside the furnace body, consequently when overhauing the revolving stage, the influence of the furnace body waste heat that the maintenance personal receives is less relatively, and this material loading unloading mode can avoid the friction loss between work piece and the material loading discharge.

Preferably, the rotating device comprises a control pit which is arranged beside the pit on the ground, the control pit is communicated with the pit, a first transmission shaft is rotatably connected to the bottom surface of the control pit, the first transmission shaft is in chain transmission connection with a rotating shaft of the turntable, a second transmission shaft is rotatably connected to the control pit along the horizontal direction, the second transmission shaft and the first transmission shaft are in meshing transmission through a bevel gear, a driving shaft is rotatably connected to the position right above the control pit on the ground along the horizontal direction, the driving shaft is in chain transmission connection with the second transmission shaft, and a servo motor used for driving the transmission shaft to rotate is fixed to the ground.

Through adopting above-mentioned technical scheme, the user drives the rotation of second transmission shaft through drive servo motor corotation or reversal transmission shaft, and it is rotatory to drive first transmission shaft through the bevel gear meshing, and it is rotatory to drive the pivot of revolving stage through the chain drive to change the position of work piece platform, realize that the position of work piece in the pit shifts, use manpower sparingly, and main drive and drive disk assembly keep away from the furnace body, receive that the influence of furnace body waste heat is little and concentrated, convenient maintenance.

Preferably, the fixing device comprises a telescopic cylinder arranged in the control pit along the horizontal direction, a telescopic rod is arranged on the telescopic cylinder, two limiting holes matched with the telescopic rod are radially arranged on the outer circumference of the rotary table, and the two limiting holes are symmetrically arranged.

Through adopting above-mentioned technical scheme, when the revolving stage rotated the assigned position user drive telescopic link stretch out insert spacing downthehole, the rotation of restriction revolving stage to fixed revolving stage guarantees not taking place rotatoryly at the work piece platform in the in-process that rises or descends revolving stage, thereby stably material loading is unloaded, convenient operation.

Preferably, the first transmission shaft and the transmission chain sleeved on the rotating shaft of the rotary table are provided with two movable contacts, the number of the movable contacts is two, the movable contacts are arranged corresponding to the positions of the transmission chain on the first transmission shaft when the rotary table rotates forwards for 180 degrees and rotates reversely for 180 degrees, the chain wheel of the rotary table is provided with a fixed contact, the ground is provided with a controller, and the fixed contact, the movable contact, the controller and the servo motor are electrically connected.

Through adopting above-mentioned technical scheme, when the position of two work piece platforms exchanged, the stationary contact can stop servo motor's rotation with the movable contact butt of difference respectively to the controller signals to guarantee that the revolving stage can accurately realize the position exchange of two work piece platforms when corotation and reversal, thereby the rotation of person of facilitating the use operation revolving stage, the material loading is unloaded.

Preferably, the shape of the workpiece platform is matched with the shape of the opening of the furnace body, and the shape of the opening of the pit communicated with the outside is matched with the shape of the workpiece platform.

By adopting the technical scheme, the workpiece platform can plug the openings of the furnace body and the pit communicated with the outside when ascending, so that the heat energy leakage of the furnace body during the heat treatment of the workpiece is avoided, the heat energy is saved, and the heat treatment efficiency of the industrial electric furnace is improved.

Preferably, a crawling ladder communicated with the ground is fixed on the bottom surface of the control pit, an overhaul platform is arranged in the control pit along the horizontal direction, and the crawling ladder is communicated with the overhaul platform.

Through adopting above-mentioned technical scheme, the user can be by the cat ladder get into inside the control hole and overhaul the platform on, overhauls the transmission part in the control hole, the maintenance process of this industry electric stove of convenient.

Preferably, the bottom surface of the pit is provided with four safety support piles in the vertical direction, the safety support piles rotate around the rotating center of the rotating table in an annular array, and the safety support piles are arranged below the rotating table.

Through adopting above-mentioned technical scheme, in case the revolving stage takes place the slope because of bearing a burden for a long time, the slope situation worsens when safe supporting pile can avoid the revolving stage to bear a burden once more to the support of revolving stage, avoids the work piece to drop in the pit.

Preferably, a rubber buffer layer is arranged at the top of the safety support pile.

Through adopting above-mentioned technical scheme, the flexibility of rubber buffer layer can reduce the mutual wearing and tearing between safety support stake and the revolving stage, effectively prolongs the life of revolving stage.

To sum up, the utility model discloses following beneficial effect has:

1. the heat energy leakage loss in the workpiece feeding process is reduced, and the feeding and the discharging are convenient;

2. reduce the wearing and tearing in the work piece material loading unloading process.

Drawings

Fig. 1 is an overall schematic diagram of this embodiment.

Fig. 2 is an overall sectional view of this embodiment with a partial sectional view of the turntable.

Fig. 3 is a schematic diagram of the structure of the movable contact and the fixed contact of this embodiment.

In the figure: 1. a furnace body; 2. a pit; 3. a turntable; 31. a limiting hole; 32. a telescopic cylinder; 33. a telescopic rod; 4. a workpiece stage; 41. a lifting cylinder; 5. a control pit; 51. a first drive shaft; 52. a second drive shaft; 53. a drive shaft; 54. a servo motor; 55. climbing a ladder; 56. overhauling the platform; 6. a controller; 61. a movable contact; 62. a stationary contact; 7. a safety support pile; 71. a rubber cushion layer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying fig. 1-3.

Industrial electric furnace with bottom opening and closing structure, including built-in furnace body 1 that has the furnace chamber, furnace body 1 is fixed subaerial, is equipped with pit 2 under the subaerial furnace body 1 that lies in, and pit 2's shape is the rectangle and its area is greater than the 1 area of furnace body of twice, is equipped with the opening with external intercommunication on the top surface that pit 2 is not covered by furnace body 1. The rotary table 3 is rotatably connected to the bottom surface of the pit 2, and the vertical surface of the rotary center of the rotary table 3 is positioned outside the furnace body 1. Two horizontal workpiece tables 4 are fixed on the rotary table 3, a lifting cylinder 41 is fixed at the position, located at the workpiece table 4, on the rotary table 3, the lifting cylinder 41 is arranged corresponding to the workpiece table 4, and the telescopic rod 33 is fixedly connected with the bottom surfaces of the workpiece tables 4. Be equipped with rotary device in the pit 2 and supply the rotatory revolving stage 3 of user for the position of two work piece platforms 4 can be exchanged, be equipped with the rotation angle that fixing device supplied the fixed revolving stage 3 of user in the pit 2, make two work piece platforms 4 can be after exchanging the position through lift cylinder 41 stably upwards remove.

The user places the work piece earlier on work piece platform 4 at pit 2 opening part, makes work piece platform 4 move down to pit 2 in through lift cylinder 41, removes fixing device to revolving stage 3's fixed, changes the position of two work piece platforms 4 through rotary mechanism, and the fixed rotation angle of revolving stage 3 this moment of rethread fixing device starts lift cylinder 41 and lets the work piece remove to furnace body 1 inside along with work piece platform 4, heats, and repetitive operation then can take out the work piece. Because the vertical face of the rotation center place of revolving stage 3 is located outside furnace body 1, so even if rotating device damages, also can follow the opening part manpower rotation revolving stage 3 of pit 2, still can take out the work piece, and under the pivot position skew furnace body 1 of revolving stage 3, the furnace body 1 waste heat that receives is less relatively, also the easy access. And the workpiece can not be abraded on the workpiece table 4 due to the friction of feeding and discharging.

The rotating device comprises a control pit 5 which is arranged beside a pit 2 on the ground, the control pit 5 is communicated with the pit 2, and an opening of the control pit 5 communicated with the outside is arranged beside an opening of the pit 2 communicated with the outside. The bottom surface of the control pit 5 is rotatably connected with a first transmission shaft 51 along the vertical direction, and chain wheels are fixed on the first transmission shaft and the rotating shaft of the turntable 3 and are connected through chain transmission. The side surface of the control pit 5 is rotatably connected with a second transmission shaft 52 along the horizontal direction, the second transmission shaft 52 and the first transmission shaft 51 are both fixed with bevel gears and are in meshing transmission through the bevel gears, the ground is positioned right above the control pit 5 and is rotatably connected with a driving shaft 53 along the horizontal direction, and the driving shaft 53 and the second transmission shaft 52 are both fixed with chain wheels and are in chain transmission connection. A servo motor 54 is fixed on the ground for a user to rotate the transmission shaft forwards or backwards, so as to drive the second transmission shaft 52 to rotate and drive the first transmission shaft 51 to rotate, and thus the rotating shaft of the rotary table 3 is driven to rotate, so that the positions of the two workpiece tables 4 are exchanged, and the workpiece loading and unloading are realized. And all driving elements are positioned in the control pit 5, are relatively far away from the furnace body 1 and are concentrated, the influence of the waste heat of the furnace body 1 on the maintenance environment temperature is small, and the maintenance is convenient.

The fixing device comprises a telescopic cylinder 32 which is arranged in the control pit 5 along the horizontal direction, and a telescopic rod 33 which is arranged in the horizontal direction is arranged on the telescopic cylinder 32. The outer circumference of the rotary table 3 is provided with two limiting holes 31 with the shapes matched with the telescopic rods 33, and the two limiting holes 31 are radially arranged along the rotary table 3 and symmetrically arranged on the rotary table 3 corresponding to the working tables. The telescopic rod 33 can slide along the horizontal direction, extend out of the control pit 5 and extend into the limiting hole 31 to block the rotation of the rotary table 3. The user is when rotatory appointed position with revolving stage 3, starts telescopic cylinder 32, makes telescopic link 33 stretch into spacing hole 31 in, and the rotation angle of fixed revolving stage 3 guarantees that work piece platform 4 does not rotate at lift in-process revolving stage 3, can not take place work piece platform 4 striking 2 open-ended circumstances in pit, facilitates the use.

Two movable contacts 61 are arranged on a transmission chain for transmission connection between the first transmission shaft 51 and the rotating shaft of the turntable 3, and a fixed contact 62 is arranged on a chain wheel fixed on the rotating shaft of the turntable 3. When the two workpiece platforms 4 are respectively positioned below the furnace body 1 and the opening of the pit 2, one of the movable contacts 61 is abutted with the fixed contact 62; when the two work tables 4 are switched in position, the other movable contact 61 abuts against the fixed contact 62. The controller 6 is arranged on the ground, and the fixed contact 62, the movable contact 61, the controller 6 and the servo motor 54 are electrically connected. When the user rotates the turntable 3, the contact part of the transmission chain and the chain wheel on the rotating shaft of the turntable 3 changes, and when the turntable 3 rotates 180 degrees, the fixed contact 62 contacts with the movable contact 61 to send an electric signal to the controller 6, so as to drive the servo motor 54 to stop rotating. Thereby ensuring that a user can not rotate the turntable excessively to cause the workpiece table 4 to deviate and the workpiece can not be sent into the furnace body 1 or to the outside.

In order to reduce the heat energy leakage when the workpiece is heated in the furnace body 1, the shape of the workpiece table 4 is matched with the shape of the opening at the bottom of the furnace body 1, so that the workpiece table 4 can seal the furnace body 1 when lifting to send the workpiece into the furnace body 1, and the furnace door sealing function is realized. The opening shape of pit 2 and external intercommunication is unanimous with the shape of work piece platform 4 for work piece platform 4 that is located under pit 2 and the external communicating opening can seal this opening when rising and send out work piece pit 2, has both formed the absolute plane with ground and has conveniently unloaded, reduces the leakage point of pit 2 waste heat energy again, saves heat energy, improves industrial electric stove's work efficiency.

In order to conveniently overhaul the transmission part of the control pit 5, the bottom surface of the control pit 5 is provided with a ladder 55, the ladder 55 extends upwards to the ground, an overhaul platform 56 is fixed in the control pit 5 along the horizontal direction, and the ladder 55 is arranged at the height level with the top of the first transmission shaft 51 and communicated with the overhaul platform 56. A user can go to the maintenance platform 56 or the bottom of the control pit 5 through the ladder 55 to perform maintenance on each part in the control pit 5, so that the service life of the industrial furnace is conveniently prolonged.

In order to prevent the rotary table 3 from inclining due to frequent load bearing after long-term use, the bottom surface of the pit 2 is provided with cylindrical safety support piles 7 along the vertical direction, the number of the safety support piles 7 is four, and the safety support piles 7 are annularly arrayed around the rotating shaft of the rotary table 3, and the safety support piles 7 are arranged below the rotary table 3 and are lower than the rotary table 3 in height. Once the rotary table 3 inclines due to long-term load bearing, the safe supporting piles 7 can support the rotary table 3 to prevent the inclination condition of the rotary table 3 from deteriorating when the rotary table is loaded again, and prevent the workpiece from falling into the pit 2.

In order to reduce the abrasion of the safety support piles 7 to the bottom surface of the rotary table 3 in the process of supporting the rotary table 3, the rubber buffer layer 71 is arranged at the top of the safety support piles 7, the mutual abrasion between the safety support piles 7 and the rotary table 3 can be reduced due to the flexibility of the rubber buffer layer 71, and the service life of the rotary table 3 is effectively prolonged.

The specific implementation process comprises the following steps: the user places the work piece on work piece platform 4, make work piece platform 4 descend to in the pit 2 through lift cylinder 41, the telescopic link 33 level of drive telescoping cylinder 32 is kept away from the revolving stage 3 and is slided, leave spacing hole 31, drive shaft 53 through servo motor 54 and rotate, drive second transmission shaft 52 through chain drive and rotate, drive first transmission shaft 51 through bevel gear meshing and rotate, the pivot that drives revolving stage 3 through chain drive rotates, realize 180 degrees rotations and the interchange of two work piece platform 4 positions of revolving stage 3, drive telescopic link 33 stretches into spacing hole 31 and carries out the fixed lifting cylinder 41 that restarts of revolving stage 3 and let work piece platform 4 send the work piece into furnace body 1 and carry out the thermal treatment, reduce work piece platform 4 height after finishing thermal treatment, telescopic link 33 resets, reverse 180 degrees rotatory revolving stage 3, telescopic link 33 stretches out, rise work piece platform 4, take off the work piece.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (8)

1. Industrial electric stove with bottom opening and closing structure, including furnace body (1), furnace body (1) is fixed subaerial, be equipped with pit (2) with external intercommunication, its characterized in that under furnace body (1) on the ground: the rotary furnace is characterized in that a rotary table (3) is connected to the bottom surface of the pit (2) in a rotating mode, the rotating center of the rotary table (3) is located outside the furnace body (1), workpiece tables (4) are fixed on the rotary table (3), the number of the workpiece tables (4) is two, the workpiece tables are symmetrically arranged, a lifting cylinder (41) is fixed between each workpiece table (4) and the corresponding rotary table (3), a rotating device for rotating the rotary table (3) is arranged in the pit (2), and a fixing device for fixing the rotary table (3) is arranged in the pit (2).

2. The industrial furnace with bottom opening and closing structure according to claim 1, wherein: the rotary device comprises a control pit (5) which is arranged beside a pit (2) on the ground, the control pit (5) is communicated with the pit (2), a first transmission shaft (51) is rotationally connected to the bottom surface of the control pit (5), the first transmission shaft (51) is in chain transmission connection with a rotating shaft of the rotary table (3), a second transmission shaft (52) is rotationally connected to the control pit (5) along the horizontal direction, the second transmission shaft (52) and the first transmission shaft (51) are in meshing transmission through bevel gears, a driving shaft (53) is rotationally connected to the position right above the control pit (5) along the horizontal direction on the ground, the driving shaft (53) is in chain transmission connection with the second transmission shaft (52), and a servo motor (54) for driving the transmission shaft to rotate is fixed on the ground.

3. The industrial furnace with bottom opening and closing structure according to claim 2, wherein: the fixing device comprises a telescopic cylinder (32) which is arranged in the control pit (5) along the horizontal direction, a telescopic rod (33) is arranged on the telescopic cylinder (32), limiting holes (31) matched with the telescopic rod (33) are radially arranged on the outer circumference of the rotary table (3), and the number of the limiting holes (31) is two and the limiting holes are symmetrically arranged.

4. The industrial furnace with bottom opening and closing structure according to claim 3, wherein: the improved turntable is characterized in that movable contacts (61) are arranged on transmission chains sleeved on rotating shafts of the first transmission shaft (51) and the turntable (3), the number of the movable contacts (61) is two, the movable contacts correspond to the positions of the transmission chains on the first transmission shaft (51) when the turntable (3) rotates forwards for 180 degrees and rotates backwards for 180 degrees respectively, a fixed contact (62) is arranged on a chain wheel of the turntable (3), a controller (6) is arranged on the ground, and the fixed contact (62), the movable contacts (61), the controller (6) and the servo motor (54) are electrically connected.

5. The industrial furnace with bottom opening and closing structure according to claim 4, wherein: the shape of the workpiece platform (4) is matched with the opening shape of the furnace body (1), and the opening shape of the pit (2) communicated with the outside is matched with the shape of the workpiece platform (4).

6. The industrial electric furnace with bottom opening and closing structure according to claim 2 or 5, wherein: the underground coal mine.

7. The industrial furnace with bottom opening and closing structure according to claim 6, wherein: the bottom surface of pit (2) is equipped with safety support stake (7) along vertical direction, the quantity of safety support stake (7) is four and revolutes the rotation center annular array of platform (3), safety support stake (7) set up in revolving stage (3) below.

8. The industrial furnace with bottom opening and closing structure according to claim 7, wherein: and a rubber buffer layer (71) is arranged at the top of the safety support pile (7).