CN112066723A - Bar heating furnace system - Google Patents

Abstract

The invention discloses a bar heating furnace system which comprises a furnace body, a roller component, a conveying device and a heating device, wherein the furnace body is provided with a bar inlet, a hearth and a bar outlet which are sequentially arranged from back to front; the roller wheel assembly is positioned in the hearth and used for bearing the bars; the conveying device is arranged at the rear side of the rod inlet and is used for conveying the rod material to pass through the rod inlet and enter the hearth; the heating device is arranged on the furnace body and used for heating the bar on the roller component. Through the structure, the rod bears through wheel components in furnace, wheel components simple structure, and the fault rate is low, need not set up comparatively complicated conveying structure such as chain in furnace, and conveyor sets up outside furnace, can avoid it to receive high temperature and roast and lead to breaking down, so, can reduce the rod transport fault rate of rod heating furnace system, ensures the normal transport of rod, effective guarantee normal production.

Description

Bar heating furnace system

Technical Field

The invention relates to the technical field of bar heating equipment, in particular to a bar heating furnace system.

Background

At present, the rod generally heats through the rod heating furnace, to the rod heating furnace, its both ends generally are provided with power sprocket, set up the coarse pitch chain on the power sprocket, and the rod passes through into the stick mouth entering stove, is born by the coarse pitch chain, and motor drive sprocket drives the rod and slowly passes through the zone of heating, and this in-process, heating device can heat the rod. To above-mentioned structure, the structure of chain is comparatively complicated, because the chain is in high temperature region for a long time, can accelerate the chain oxidation to can lead to the chain mechanical failure often to appear, make the rod normally carry, the rod heating furnace often causes the maintenance of shutting down because of the unable trouble of carrying of rod appears, influences normal production.

Disclosure of Invention

The invention aims to at least solve one of the technical problems in the prior art, and provides a bar heating furnace system which can reduce the failure rate of bar conveying and ensure normal production.

According to an embodiment of the present invention, there is provided a rod heating furnace system including: the furnace body is provided with a rod inlet, a hearth and a rod outlet which are sequentially arranged from back to front; the roller wheel assembly is positioned in the hearth and used for bearing the bar; the conveying device is arranged at the rear side of the rod inlet and is used for conveying the rod material to pass through the rod inlet and enter the hearth; and the heating device is arranged on the furnace body and used for heating the bar on the roller component.

According to some embodiments of the invention, the roller assembly comprises: the roller carrier is arranged in the hearth; the roller piece is rotatably arranged on the roller frame, and a roller groove is formed in the peripheral side of the roller piece.

According to some embodiments of the present invention, the number of the roller assemblies is two or more, and the two or more roller assemblies are arranged in sequence from the rear to the front.

According to some embodiments of the invention, the conveyor device is provided as a chain conveyor.

According to some embodiments of the invention, the heating device comprises: the mixing piece is provided with a mixing chamber, a fuel source interface and a combustion improver interface, and the fuel source interface and the combustion improver interface are communicated with the mixing chamber; the fire gun is arranged on the furnace body, and the outlet of the fire gun faces to the bars on the roller assemblies; the one end of pipe is connected with the mixing piece, and the other end is connected with the firelock.

The beneficial effect that above-mentioned scheme has: through the structure, the rod bears through the roller subassembly in furnace, and the roller subassembly simple structure, the fault rate is low, need not set up comparatively complicated transport structure such as chain in furnace, and conveyor sets up outside furnace, can avoid it to receive high temperature to roast and lead to breaking down, so, can reduce the rod transport fault rate of rod heating furnace system, ensures the normal transport of rod, effectively ensures normal production.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention is further described below with reference to the accompanying drawings and examples;

FIG. 1 is a cross-sectional view of a rod furnace system with the heating device removed according to one embodiment of the present invention;

FIG. 2 is a top view of the scroll wheel assembly shown in FIG. 1;

FIG. 3 is a cross-sectional view of the heating unit and furnace body of the bar heating furnace system;

FIG. 4 is a schematic view of the furnace body and the heat insulation device of the embodiment of the bar heating furnace system of the present invention;

FIG. 5 is a rear view of the thermal shield apparatus shown in FIG. 4 with the inlet curtain removed;

FIG. 6 is a cross-sectional view of the insulation assembly shown in FIG. 4 with the seal block removed;

FIG. 7 is a cross-sectional view A-A of the thermal shield apparatus shown in FIG. 6;

FIG. 8 is a schematic view of the furnace body and the isolation device of an embodiment of the bar heating furnace system according to the present invention;

FIG. 9 is another schematic view of the furnace body and the isolation device shown in FIG. 8;

fig. 10 is a block diagram of the drive assembly and mount shown in fig. 9.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the directions of up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, greater than, less than, exceeding, etc. are understood as excluding the present numbers, and the above, below, inside, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, the description should not be interpreted as indicating or implying any relative importance or implicit indication of the number of technical features indicated or implicit indication of the precedence of technical features indicated.

In the description of the present invention, unless otherwise expressly limited, the terms set, mounted, connected, etc. should be construed broadly, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in light of the detailed contents of the technical solutions.

Referring to fig. 1 to 3, a rod heating furnace system includes a furnace body 10, a roller assembly 20, a conveying device 30, and a heating device.

Wherein, be provided with into excellent mouth 11, furnace 12 and excellent mouth 13 on the furnace body 10, advance excellent mouth 11, furnace 12 and excellent mouth 13 and arrange from the back to the front in proper order, wheel components 20 sets up in furnace 12, wheel components 20 are used for bearing the weight of the rod. A conveying device 30 is arranged at the rear side of the rod inlet 11, and the conveying device 30 is used for conveying the rods into the hearth 12 through the rod inlet 11. The heating device is arranged on the furnace body 10 and used for heating the bars on the roller assemblies 20.

During production, a first bar is firstly conveyed to the hearth 12 through the conveying device 30, the first bar entering the hearth 12 is borne by the roller assembly 20, the first bar is heated through the heating device, the conveying device 30 conveys a second bar, and the second bar pushes the first bar so that the first bar moves forwards along the hearth 12 until the second bar is conveyed into the hearth 12. The conveyor 30 conveys a third bar which pushes against a second bar, thus circulating to perform the conveying of the bars.

Thus, through the structure, the bar is loaded in the hearth 12 through the roller assembly 20, the roller assembly 20 is simple in structure, and the failure rate is low; relatively complex conveying structures such as chains and the like do not need to be arranged in the hearth 12; the conveyor 30 is disposed outside the furnace 12 to prevent the furnace from being damaged by high temperature. Therefore, the failure rate of bar conveying of the bar heating furnace can be reduced, normal conveying of the bars is ensured, and normal production is effectively guaranteed.

The roller assembly 20 includes a roller frame 21 and a roller assembly 22, the roller frame 21 is disposed in the furnace 12, the roller assembly 22 is rotatably disposed on the roller frame 21, and a roller groove 221 is disposed on the peripheral side of the roller assembly 22. The roller frame 21 is provided with two or more roller members 22, and the roller members 22 are arranged in the front-rear direction.

The number of the roller assemblies 20 is two or more, and the two or more roller assemblies 20 are sequentially arranged from back to front. When a certain roller assembly 20 is out of order or worn too much, the roller assembly 20 can be replaced and maintained, and the replacement and maintenance operation can be facilitated due to the small length and weight of the single roller assembly 20.

In the present invention, the conveying device 30 may be provided as a chain conveyor.

In some embodiments, the conveying device 30 may further include a frame, a motor and two sets of friction wheels, wherein the two sets of friction wheels are disposed opposite to each other, and the two sets of friction wheels are disposed on the frame. When the bar material clamping device works, the bar material is clamped between the two groups of friction wheels, and the motor drives one group of friction wheels to rotate through structures such as gears, belts or chains, so that the bar material is driven to move forwards.

Referring to fig. 3, the heating device includes a mixing part 41, a burner 42 and a conduit 43, a mixing chamber, a fuel source interface and a combustion improver interface are provided on the mixing part 41, the fuel source interface and the combustion improver interface are both communicated with the mixing chamber, the burner 42 is provided on the furnace body 10, an outlet of the burner 42 faces a rod on the roller assembly 20, one end of the conduit 43 is connected with the mixing part 41, and the other end is connected with the burner 42.

When the bar material heating device works, fuel enters the mixing chamber from a fuel source interface, the combustion improver enters the mixing chamber from a combustion improver interface, the fuel and the combustion improver are mixed, the mixture flows to the fire gun 42 through the guide pipe 43, the mixture is sprayed out of the fire gun 42 and is ignited, and the bar material is roasted by flame, so that the bar material can be heated. Wherein, the combustion improver can be air, and can also be industrial oxygen, etc.

In some embodiments, the heating device may also be an electric heating structure, for example, an induction coil is arranged in the furnace 12, the bar passes through the induction coil, and an alternating current is passed through the induction coil to heat the bar; or an electric heating wire or an electric heating pipe is arranged in the hearth 12, and when the electric heating wire or the electric heating pipe is electrified, heat is generated and radiated to the bar material to heat the bar material.

The rod material needs to be input into the furnace 12 through the rod inlet, so that the rod material occupies the rod inlet 11, therefore, the rod inlet 11 needs to be in an open state during production, the furnace door cannot be closed, and the heat in the furnace 12 flows out through the gap between the rod material and the rod inlet 11. In some embodiments, to reduce heat dissipation, a heat insulation device 50 is disposed at the rod inlet 11.

Specifically, referring to fig. 4 to 7, the heat insulation device 50 includes a mounting shell 51 and an air duct 52, the mounting shell 51 is surrounded by a feeding channel 511 which is through from front to back, an air distribution cavity 512 which is arranged around the feeding channel 511 is arranged in the mounting shell 51, and the air distribution cavity 512 and the feeding channel 511 are separated by the mounting shell 51 itself. The mounting case 51 is provided with two or more air blowing ports 513 that communicate the air distribution chamber 512 with the material feeding passage 511, and the air blowing ports 513 are arranged around the material feeding passage 511. The outlet end of the air duct 52 is connected to the mounting case 51 so that the inner cavity of the air duct 52 communicates with the air distribution chamber 512.

The mounting shell 51 is inserted into the rod inlet, and the rod material passes through the material inlet passage 511 and enters the hearth 12. When heating, the inside of some rod heating furnaces can have the circulated air, to this type of rod heating furnace, can communicate the inner chamber of rod heating furnace with the entry of tuber pipe 52, utilize the wind pressure of circulated air, make the air current get into air distribution chamber 512 through tuber pipe 52, then blow the lateral wall at the rod, form the brattice around the rod, block the heat and flow out through going into the excellent mouth, thereby reducible thermal scattering and disappearing, reduce the energy consumption of rod heating furnace, and reduce the cost of heating the rod. In addition, when in use, a fan device can be arranged separately, the inlet end of the air pipe 52 is connected with the fan device, and air flow is generated through the fan device so as to form an air wall around the bar.

The isolation device 60 further includes a sealing block 53, the sealing block 53 is located at the rear side of the air blowing port 513, a containing groove 514 communicating with the material feeding channel 511 is provided on the mounting case 51, the containing groove 514 is arranged around the material feeding channel 511, that is, the containing groove 514 has an opening facing the material feeding channel 511, and the opening is arranged around the material feeding channel 511. The sealing block 53 is disposed in the accommodating groove 514, the sealing block 53 is disposed around the axis of the feeding channel 511, and the sealing block 53 further extends into the feeding channel 511. The sealing block 53 has elasticity, and a slit 531 is formed in an inner wall of the sealing block 53, and the slit 531 extends in the front-rear direction to penetrate the sealing block 53. Wherein, the slits 531 may be provided in more than two, and the slits 531 are arranged around the axis of the feeding passage 511. The size of the sealing block 53 is designed according to the size of the bar, so that the bar is in contact with the sealing block 53 or the gap is small, the air flow of the air wall can be blocked from flowing outwards, and the heat loss is further reduced.

When inserting the rod, sometimes the condition that the axis of rod deviates from the axis of the inner cavity of the sealing block 53 exists, at this moment, the rod can extrude the sealing block 53 to enable a part of the sealing block 53 to generate elastic deformation, the sealing block 53 generates a space for the rod to pass through after being compressed and deformed, namely, the rod can be inserted into the sealing block 53 through the mode of extruding the sealing block 53 to deform, and the condition that the rod is difficult to enter due to the deviation of the rod is avoided. The part of the sealing block 53 directly extruded by the bar generates elastic deformation, and due to the existence of the cutting seam 531, the part of the sealing block 53 not directly extruded by the bar generates less deformation or basically generates no deformation, so that the difficulty of inserting the bar through the deformation of the extrusion sealing block 53 is reduced.

The sealing block 53 may be configured as a cotton block made of a high temperature resistant material and having elasticity to prevent it from being damaged by heat. In some embodiments, the seal block 53 may be made of a stack of high temperature resistant felts cut.

The receiving groove 514 is also opened rearward, the mounting case 51 is provided with the inlet curtain 54 and the press-fitting member 55, the sealing block 53, the inlet curtain 54 and the press-fitting member 55 are arranged in this order from front to rear, the inlet curtain 54 extends to the rear of the slit 531, and the press-fitting member 55 is connected to the mounting case 51 by fastening members such as bolts or the like to sandwich the inlet curtain 54 between the press-fitting member 55 and the mounting case 51. As described above, the projection of the slit 531 is located on the projection of the inlet curtain 54 in the front-rear direction, and a part of the slit 531 can be shielded by the inlet curtain 54, so that the air flow of the wind wall can be blocked from flowing out after passing through the slit 531, and the heat dissipation can be reduced. In addition, inlet curtain 54 may be removable to facilitate removal and replacement of seal block 53.

In some embodiments, a service passage 14 is further provided on the furnace body 10, the service passage 14 communicates with the furnace 12, and an isolation device 60 is provided at an end of the service passage 14 to limit heat leakage.

Specifically, referring to fig. 8 to 10, the isolation device 60 includes an access door 61, a mounting member 62 and a driving member 63, one side of the access door 61 is rotatably connected to the furnace body 10 by a pivot or a hinge, the other side of the access door 61 is provided with a latch bar 614, the mounting member 62 is rotatably connected to the furnace body 10 by a pivot, the mounting member 62 is rotatably connected to the position a by a pivot, the one end of the mounting member 62 is provided with a slot 621, one end of the driving member 63 is rotatably connected to the position B by a pivot, the other end of the driving member 63 is rotatably connected to the position C by a pivot, the other end of the driving member 63 and the other end of the mounting member 62 are respectively arranged at three corner points of a triangle, and the point a is located between two ends of. The drive assembly 63 is extendable and retractable to reduce its length, and the drive assembly 63 can be retracted to provide a force to urge itself to extend.

When the access door 61 is in the closed state shown in fig. 8, point C is located below line AB, and the latch tongue 614 is inserted into the insertion groove 621. When the access door 61 needs to be opened, the access door 61 can be rotated to open by pulling the access door 61, and in the process, the latch bar 614 can push the mounting piece 62 to rotate, so that the latch bar 614 is separated from the slot 621, and the point C is moved to the upper part of the line segment AB. When the access door 61 needs to be closed, the access door 61 is rotated toward the furnace body 10, and the latch bar 614 can push the mounting member 62 to rotate again, so that the latch bar 614 is inserted into the insertion slot 621.

As above, when the access door 61 is in the closed state, the driving force provided by the driving assembly 63 can make the mounting member 62 push the latch bar 614 upward to lock the access door 61 on the furnace body 10, so that the locking effect is good, the heat loss is small, and the opening and closing of the access door 61 are also simple.

In some embodiments, when the access door 61 is in the closed position, the latch bar 614 is located on the extension of the line segment AB, thereby forming a dead point from which the access door 61 can be rotated.

Drive assembly 63 includes a first post 631, a first bearing 632, a second post 632, a spring member 634, and an adjustment nut 635. The first supporting portion 632 is slidably sleeved on the first supporting rod 631, the second supporting rod 632 is provided with a second supporting portion 6331 and an insertion hole 6332, the second supporting portion 6331 is arranged opposite to the first supporting portion 632, the first supporting rod 631 is inserted in the insertion hole 6332, the spring piece 634 is sleeved on the first supporting rod 631 and the second supporting rod 632, the spring piece 634 is located between the first supporting portion 632 and the second supporting portion 6331, the adjusting nut 635 is sleeved on the first supporting rod 631, and the first supporting portion 632 is located between the adjusting nut 635 and the spring piece 634. The first arm 631 is rotatably connected to the mounting member 62 at the position C, and the second arm 632 is rotatably connected to the main body of the furnace body 10 at the position B.

By pushing the first lever 631, the first receiver 632 can be driven to move toward the second receiver 6331, the spring 634 compresses, and the driving assembly retracts. Adjustment nut 635 is threadably engaged with first rod 631, i.e., adjustment nut 635 has internal threads thereon and first rod 631 has external threads thereon. The position of the adjustment nut 635, and thus the amount of compression of the spring member 634, can be varied by turning the adjustment nut 635, thereby varying the biasing force that the mounting member 62 exerts on the latch bar 614 when the access door 61 is in the closed and locked condition.

In some embodiments, the second rod 632 and the mounting member 62 can be rotatably connected at C, and the first rod 631 and the furnace body 10 can be rotatably connected at B. In some embodiments, drive assembly 63 may also be provided as a gas spring or a hydraulic spring.

A handle 613 is provided to the access door 61 so as to push and pull the access door 61 to rotate.

A tampon 64 is further arranged on the furnace body 10, the tampon 64 is arranged around the access channel 14, and when the access door 61 is closed, the side of the access door 61 facing the access channel 14 is attached to the tampon 64. The cotton sliver 64 can fill the gap between the access door 61 and the furnace body 10, and reduce heat loss.

In addition, the isolation device 60 further comprises an inner oven door 65 and a connecting rod 66, wherein the inner oven door 65 is arranged in the access passage 14, and one side of the inner oven door 65 is rotatably connected with the oven body 10 through a pivot or a hinge and the like. One end of the link 66 is rotatably connected to the access door 61 by a pivot or the like, and the other end is rotatably connected to the inner door 65 by a pivot or the like, so that the access door 61, the furnace body 10, the inner door 65 and the link 66 form a four-link 66 structure. The access door 61 is linked with the inner furnace door 65, so that the inner furnace door 65 can rotate along with the access door 61 to realize opening and closing.

Through setting up interior furnace door 65 and access door 61, can play the effect of double-deck isolation to the heat, interior furnace door 65 can block high temperature, plays thermal-insulated effect, reduces the heat that reaches access door 61 to reduce the heat through the scattering and disappearing of access door 61, reducible heat scatters and disappears from this, reduces the energy consumption. In addition, the surface temperature of the access door 61 can be reduced, and the danger caused by the overhigh surface temperature of the access door 61 is avoided.

The access door 61 includes a door case 611 and a first thermal insulation layer 612 disposed inside the door case 611 to reduce heat dissipation through the access door 61 into the outside air. The first thermal insulation layer 612 may be a high temperature resistant cotton block or a high temperature resistant felt.

In some embodiments, insulation may also be provided on the inner oven door 65 to reduce heat from passing through the inner oven door 65. The heat insulation layer can also be made of high temperature resistant cotton blocks or high temperature resistant felts.

A second insulating layer 15 is arranged in the hearth 12, and refractory bricks 16 are arranged on the inner side of the second insulating layer 15, wherein the refractory bricks 16 are arranged on both sides of the roller assembly 20, and the foregoing fire guns 42 are inserted into the refractory bricks 16 to perform the functions of heat insulation and heat preservation.

The furnace body 10 is also provided with an explosion-proof opening 17 communicated with the hearth 12, and the explosion-proof opening 17 is used for pressure relief when the pressure in the hearth 12 is too high so as to ensure safety.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (5)

1. A rod heating furnace system, comprising:

the furnace body is provided with a rod inlet, a hearth and a rod outlet which are sequentially arranged from back to front;

the roller wheel assembly is positioned in the hearth and used for bearing the bars;

the conveying device is arranged at the rear side of the rod inlet and is used for conveying the rod material to pass through the rod inlet and enter the hearth;

and the heating device is arranged on the furnace body and used for heating the bars on the roller wheel assembly.

2. The rod heating furnace system according to claim 1, wherein the roller assembly comprises:

the roller carrier is arranged in the hearth;

the roller piece is rotatably arranged on the roller frame, and a roller groove is formed in the peripheral side of the roller piece.

3. The rod heating furnace system according to claim 1, wherein the number of the roller assemblies is two or more, and the two or more roller assemblies are arranged in sequence from the rear to the front.

4. The rod heating furnace system according to claim 1, wherein the conveying means is provided as a chain conveyor.

5. The rod heating furnace system according to claim 1, wherein the heating means comprises:

the mixing piece is provided with a mixing chamber, a fuel source interface and a combustion improver interface, and the fuel source interface and the combustion improver interface are communicated with the mixing chamber;

the fire gun is arranged on the furnace body, and the outlet of the fire gun faces to the bars on the roller assemblies;

the one end of pipe is connected with the mixing piece, and the other end is connected with the firelock.

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