CN110455077B - Heat accumulating energy-saving melting reverberatory furnace - Google Patents
Heat accumulating energy-saving melting reverberatory furnace Download PDFInfo
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- CN110455077B CN110455077B CN201910861872.XA CN201910861872A CN110455077B CN 110455077 B CN110455077 B CN 110455077B CN 201910861872 A CN201910861872 A CN 201910861872A CN 110455077 B CN110455077 B CN 110455077B
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- 238000002844 melting Methods 0.000 title claims abstract description 69
- 230000008018 melting Effects 0.000 title claims abstract description 69
- 238000002485 combustion reaction Methods 0.000 claims abstract description 52
- 238000002347 injection Methods 0.000 claims abstract description 25
- 239000007924 injection Substances 0.000 claims abstract description 25
- 239000007921 spray Substances 0.000 claims abstract description 22
- 235000014347 soups Nutrition 0.000 claims abstract description 13
- 230000001172 regenerating effect Effects 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims description 17
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 16
- 238000005338 heat storage Methods 0.000 claims description 13
- 239000007789 gas Substances 0.000 abstract description 42
- 239000002918 waste heat Substances 0.000 abstract description 9
- 230000007547 defect Effects 0.000 abstract description 5
- 238000011084 recovery Methods 0.000 abstract description 5
- 238000005507 spraying Methods 0.000 abstract 1
- 238000009825 accumulation Methods 0.000 description 11
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 10
- 239000003344 environmental pollutant Substances 0.000 description 9
- 231100000719 pollutant Toxicity 0.000 description 9
- 239000001301 oxygen Substances 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- 239000003345 natural gas Substances 0.000 description 5
- 230000008093 supporting effect Effects 0.000 description 5
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- 239000002912 waste gas Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B14/14—Arrangements of heating devices
- F27B14/143—Heating of the crucible by convection of combustion gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B14/14—Arrangements of heating devices
- F27B2014/146—Recuperation of lost heat, e.g. regenerators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
- F27D2017/007—Systems for reclaiming waste heat including regenerators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/13—Smelting
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a heat accumulating energy-saving melting reflecting furnace which comprises a furnace body, a combustion-supporting fan, an injection fan, a gas pipe, a furnace door device, a gate device, a first burner, a second burner, a reversing valve and first to fourth pipes. The furnace body is provided with a melting cavity, a feed inlet and a soup outlet, the feed inlet is opened and closed by the furnace door device, and the soup outlet is opened and closed by the gate device; the first burner and the second burner respectively comprise a spray gun and a regenerator with a heat accumulating ball inside, the spray gun is provided with a feeding end and a spraying end communicated with the melting cavity, the regenerator is communicated with the feeding end, and the gas pipe is respectively communicated with the feeding ends of the first burner and the second burner. The first ends of the first pipe to the fourth pipe are respectively assembled at the reversing valve, the second end of the first pipe is assembled at the regenerative chamber of the first combustion machine, the second end of the second pipe is assembled at the regenerative chamber of the second combustion machine, the second end of the third pipe is assembled at the combustion-supporting fan, and the second end of the fourth pipe is assembled at the injection fan, so that the defects of low melting speed, low waste heat recovery rate and the like are overcome.
Description
Technical Field
The invention relates to a reverberatory furnace for melting aluminum alloy ingots and waste materials by flame radiation for casting aluminum rods and aluminum ingots, in particular to a heat-accumulating energy-saving melting reverberatory furnace.
Background
With the continuous development of economy and the continuous progress of society, various consumer products are provided for the development of industrial enterprises, and a reverberatory furnace is one of the consumer products.
The reverberatory furnace is also called a flame reverberatory furnace, and is a metallurgical furnace for directly heating materials through flame to smelt metals. Because the reverberatory furnace has simple structure, small investment and wider types of used fuels (such as coal, gas, heavy oil and the like), the reverberatory furnace is important smelting equipment for aluminum alloy and is widely used in occasions for treating the aluminum alloy.
However, the conventional reverberatory furnace has the defects of low melting speed, low waste heat recovery and utilization rate and high pollutant emission caused by low-oxygen combustion,
Therefore, there is a need for a regenerative energy-saving melting reverberatory furnace to overcome the above drawbacks.
Disclosure of Invention
The invention aims to provide a heat accumulating energy-saving melting reflecting furnace, which aims to solve the defects of low melting speed, low waste heat recovery and utilization rate and high pollutant emission generated by low-oxygen combustion.
The invention provides a heat accumulating energy saving type melting reflecting furnace which comprises a furnace body, a combustion-supporting fan, an injection fan, a gas pipe, a furnace door device, a gate device, a first burner, a second burner, a reversing valve, a first pipe, a second pipe, a third pipe and a fourth pipe. The furnace body is provided with a melting cavity, a feed inlet and a soup outlet, the feed inlet and the soup outlet are communicated with the melting cavity, the furnace door device is arranged on the furnace body and selectively opens and closes the feed inlet, and the gate device is arranged on the furnace body and selectively opens and closes the soup outlet; the first combustion machine and the second combustion machine respectively comprise a spray gun and a regenerator with a heat accumulating ball arranged inside, the spray gun is provided with a feeding end and an injection end communicated with the melting cavity, the regenerator is communicated with the feeding end, the gas pipe is respectively communicated with the feeding ends of the first combustion machine and the second combustion machine, the reversing valve is provided with at least a first reversing position and a second reversing position, the first ends of the first pipe to the fourth pipe are respectively assembled at the reversing valve, the second ends of the first pipe are assembled at the regenerator of the first combustion machine, the second ends of the second pipe are assembled at the injection end of the second combustion machine, the second ends of the third pipe are assembled at the combustion-supporting fan, and the second ends of the fourth pipe are assembled at the fan.
Preferably, the heat accumulating energy saving melting reflection furnace further comprises a cooling fan and a cooling pipe, wherein the cooling fan is assembled on the furnace body, and the second end of the cooling pipe is respectively assembled at the feeding ends of the first burner and the second burner.
Preferably, in the first burner, the heat storage balls are located above a position of the heat storage chamber for assembling connection with the second end of the first pipe; in the second burner, the heat storage balls are located above the portion of the regenerator for fitting connection with the second end of the second tube.
Preferably, the second ends of the first tubes are mounted at the bottom of the side walls of the regenerators in the first burner and the second ends of the second tubes are mounted at the bottom of the side walls of the regenerators in the second burner.
Preferably, the heat accumulating energy saving melting reflecting furnace further comprises an exhaust pipe and a flue gate valve, wherein the first end of the exhaust pipe is assembled on the injection fan, and the flue gate valve is assembled on the furnace body and controls the exhaust of the exhaust pipe.
Preferably, the furnace door device comprises a furnace door, a lifting support and a lifting assembly, the lifting support is assembled at the top of the furnace body, the furnace door is arranged on the furnace body in a sliding manner along the vertical direction of the furnace body, the lifting assembly is assembled on the lifting support, the lifting assembly is further connected with the furnace door, and the lifting assembly drives the furnace door to do lifting motion so as to open and close the feed inlet.
Preferably, the lifting assembly comprises a lifting motor, a first rotating shaft, a second rotating shaft, a balancing weight, a first sprocket, a second sprocket and a chain with an open head and tail, wherein the first rotating shaft and the second rotating shaft are alternately and rotatably assembled on the lifting support, the first sprocket is sleeved on the first rotating shaft, the second sprocket is sleeved on the second rotating shaft, the head end of the chain is assembled on the furnace door, the tail end of the chain is assembled on the balancing weight, the chain is further arranged around the first sprocket and the second sprocket, the balancing weight is suspended on the lifting support, and the lifting motor is assembled on the lifting support and drives the first rotating shaft to rotate.
Preferably, the lifting assembly further comprises a guide wheel and a traction metal wire with an open head and tail, the guide wheel is sleeved on the first rotating shaft and the second rotating shaft respectively, the head end of the traction metal wire is assembled on the furnace door, the tail end of the traction metal wire is assembled on the balancing weight, and the traction metal wire is further wound on the guide wheel.
Preferably, the first rotating shaft is of a long shaft structure crossing the lifting bracket, the second rotating shaft is of a short shaft structure, the first chain wheels are respectively sleeved at two ends of the first rotating shaft, and the first chain wheels in the same end are correspondingly provided with one second chain wheel, one second rotating shaft, two guide wheels, one traction metal wire and one chain.
Preferably, the first burner and the second burner are positioned outside the same side of the furnace body and are mutually parallel, and the reversing valve is a two-position four-way reversing valve.
Compared with the prior art, the heat accumulating energy-saving melting reflecting furnace further comprises a first combustion machine, a second combustion machine, a reversing valve, a first pipe, a second pipe, a third pipe and a fourth pipe, wherein the first combustion machine and the second combustion machine respectively comprise a spray gun and a heat accumulating chamber internally provided with heat accumulating balls, the spray gun is provided with a feeding end and an injection end communicated with a melting cavity, the heat accumulating chamber is communicated with the feeding end, a gas pipe is respectively communicated with the feeding ends of the first combustion machine and the second combustion machine, the reversing valve is at least provided with a first reversing position and a second reversing position, the first ends of the first pipe to the fourth pipe are respectively arranged at the reversing valve, the second ends of the first pipe are arranged at the heat accumulating chamber of the first combustion machine, the second ends of the second pipe are arranged at the heat accumulating chamber of the second combustion machine, the second ends of the third pipe are arranged at a combustion-supporting fan, and the second ends of the fourth pipe are arranged at the injection fan; when the first burner burns, the reversing valve is switched to a first reversing position, so that the first pipe is communicated with the third pipe and the second pipe is communicated with the fourth pipe; then, natural gas enters the first burner from the gas pipe, and is sprayed into a melting cavity of the furnace body through a spray gun of the first burner for combustion; meanwhile, the combustion-supporting fan sucks external gas into the third pipe, and enables the sucked gas to sequentially enter the feeding end of the spray gun of the first burner along the third pipe, the first pipe and the heat accumulation chamber of the first burner, and the gas passing through the heat accumulation chamber of the first burner is changed into hot air under the action of the heat accumulation balls to support combustion so as to improve the combustion speed and the melting speed; synchronously, the injection fan sucks air and discharges smoke to the regenerator of the second burner through the fourth pipe and the second pipe, the heat in the flowing waste gas is absorbed by the heat storage ball of the second burner, and the waste heat of the waste gas is absorbed and utilized by the heat storage ball of the second burner, so that the pollutant discharge generated by low-oxygen combustion is low. When a certain temperature time is reached, the first burner and the second burner are switched to work, specifically, the reversing valve is switched to a second reversing position, so that the second pipe is communicated with the third pipe and the first pipe is communicated with the fourth pipe; then, natural gas enters the second burner from the gas pipe and is sprayed into a melting cavity of the furnace body through a spray gun of the second burner for combustion; meanwhile, the combustion-supporting fan sucks external gas into the third pipe, and enables the sucked gas to sequentially enter the feeding end of the spray gun of the second burner along the third pipe, the second pipe and the heat accumulation chamber of the second burner, and the gas passing through the heat accumulation chamber of the second burner is changed into hot air under the action of the heat accumulation balls to support combustion so as to improve the combustion speed and the melting speed; synchronously, the injection fan sucks air and discharges smoke to the regenerator of the first burner through the first pipe and the fourth pipe, the heat in the flowing waste gas is absorbed by the heat accumulation ball of the first burner, the waste heat of the waste gas is absorbed and utilized by the heat accumulation ball of the first burner, and the pollutant discharge generated by low-oxygen combustion is low. That is, when the reversing valve is positioned at the first switching position, the gas sucked into the third pipe by the combustion-supporting fan is discharged outwards after passing through the third pipe, the first burner, the melting cavity, the second burner, the second pipe and the fourth pipe in sequence under the action of the combustion-supporting fan and the injection fan; similarly, when the reversing valve is positioned at the second switching position, the gas sucked into the third pipe by the combustion-supporting fan is sequentially discharged outwards along the third pipe, the second burner, the melting cavity, the first burner, the first pipe and the fourth pipe under the action of the combustion-supporting fan and the injection fan; therefore, the heat energy-saving melting reverberatory furnace can solve the defects of low melting speed, low waste heat recovery and utilization rate and high pollutant emission caused by low-oxygen combustion.
Drawings
FIG. 1 is a schematic perspective view of a heat-accumulating energy-saving melting and reflecting furnace according to the present invention.
Fig. 2 is a schematic perspective view of a furnace door device in the heat accumulating energy saving melting and reflecting furnace of the present invention.
FIG. 3 is a schematic view showing an angular perspective structure of a furnace body in the heat-accumulating energy-saving melting and reflecting furnace according to the present invention when the gate device is assembled.
Fig. 4 is a schematic view showing another perspective view of the furnace body in the regenerative energy-saving melting and reflecting furnace according to the present invention when the gate device is assembled.
Fig. 5 is a schematic perspective view of the heat-accumulating energy-saving melting and reflecting furnace shown in fig. 1 at an angle when the furnace door device, the furnace body and the gate device are hidden.
Fig. 6 is a schematic perspective view of the heat-accumulating energy-saving melting and reflecting furnace shown in fig. 1 at another angle when the furnace door device, the furnace body and the gate device are hidden.
Fig. 7 is a schematic perspective view of a first burner in the regenerative energy-saving melting and reflecting furnace according to the present invention.
Fig. 8 is a schematic perspective view of a second burner in the regenerative energy-saving melting and reflecting furnace according to the present invention.
Detailed Description
Embodiments of the present invention will now be described with reference to the drawings, wherein like reference numerals represent like elements throughout.
Referring to fig. 1 and fig. 3 to 8, the regenerative energy-saving melting reflection furnace 100 of the present invention includes a furnace body 10, a combustion fan 21, an injection fan 22, a gas pipe 23, a furnace door device 30, a gate device 40, a first burner 50, a second burner 60, a reversing valve 70, a first pipe 81, a second pipe 82, a third pipe 83 and a fourth pipe 84. The furnace body 10 is provided with a melting cavity 11, a feed port 12 and a soup outlet 13 which are communicated with the melting cavity 11, preferably, the furnace body 10 is arranged at a foundation, the furnace body 10 is supported by the foundation, the feed port 12 and the soup outlet 13 are arranged on the furnace body 10 at different sides, the feed port 12 is adjacent to the soup outlet 13 at one side of the furnace body 10, and the furnace body 10 is of a square structure, but not limited to the square structure. The furnace door device 30 is arranged on the furnace body 10, and the furnace body 10 provides support for the furnace door device 30; and the furnace door device 30 selectively opens and closes the feed inlet 12, so that the furnace door device 30 opens the feed inlet 12 when feeding, so as to facilitate the raw materials such as external aluminum alloy ingots, cast aluminum bars and the like to be fed into the melting cavity 11 from the feed inlet 12, and also enables the furnace door device 30 to close the feed inlet 12 when the heat accumulating and energy saving melting and reflecting furnace 100 melts the raw materials, so as to prevent burning flame and gas from being discharged from the feed inlet 12. The gate device 40 is mounted on the furnace body 10, the furnace body 10 provides support for the gate device 40, and the gate device 40 selectively opens and closes the soup outlet 13 to open the soup outlet 13 during discharging and to close the soup outlet 13 during melting. The first burner 50 comprises a lance 51 and a regenerator 52 with a heat storage ball inside, the lance 51 has a feed end 51a and an injection end 51b communicating with the melting chamber 11, the regenerator 52 communicates with the feed end 51 a; the second burner 60 comprises a lance 61 and a regenerator 62 with a heat storage ball inside, the lance 61 having a feed end 61a and a injection end 61b communicating with the melting chamber 11, the regenerator 62 communicating with the feed end 61 a; preferably, the first burner 50 and the second burner 60 are located outside the same side of the furnace body 10 and are mutually parallel to each other so as to ensure the reliability of switching operation between the two; the injection ends 51b and 61b are opposite to the feed inlet 12 on one side of the furnace body 10 and one side of the furnace body 10, so that the injection ends 51b and 61b and the feed inlet 12 are oppositely arranged on the furnace body 10, and a better melting effect is achieved on the raw materials in the melting cavity 11. The gas pipe 23 communicates with feed ends 51a, 61a in both the first and second combustors 50, 60, respectively, to provide natural gas to the first and second combustors 50, 60, respectively. The reversing valve 70 has at least a first reversing position and a second reversing position, and preferably, the reversing valve 70 is a two-position four-way valve, for example, but not limited to, a two-position four-way solenoid valve. First ends of the first pipe 81 to the fourth pipe 84 are respectively assembled at the reversing valve 70, second ends of the first pipe 81 are assembled at the regenerator 52 of the first combustor 50, second ends of the second pipe 82 are assembled at the regenerator 62 of the second combustor 60, second ends of the third pipe 83 are assembled at the combustion fan 21, and second ends of the fourth pipe 84 are assembled at the ejector fan 22. When the reversing valve 70 is switched to the first reversing position, the reversing valve 70 enables the first pipe 81 to be communicated with the third pipe 83 and also enables the second pipe 82 to be communicated with the fourth pipe 84, and at the moment, the gas sucked into the third pipe 83 by the combustion fan 21 is sequentially discharged outside along the third pipe 83, the first pipe 81, the first burner 50, the melting chamber 11, the second burner 60, the second pipe 82 and the fourth pipe 84 under the action of the combustion fan 21 and the injection fan 22; when the reversing valve 70 is switched to the second reversing position, the reversing valve 70 communicates between the second pipe 82 and the third pipe 83 and also communicates between the first pipe 81 and the fourth pipe 84, and at this time, the gas sucked into the third pipe 83 by the combustion fan 21 is sequentially discharged outside along the third pipe 83, the second pipe 82, the second burner 60, the melting chamber 11, the first burner 50, the first pipe 81 and the fourth pipe 84 under the action of the combustion fan 21 and the ejector fan 22.
More specifically, the following is:
as shown in fig. 1, 5 and 6, in order to provide cooling and supporting combustion, the regenerative energy-saving melting reflection furnace 100 of the present invention further comprises a cooling fan 24 and a cooling pipe 25, wherein a first end of the cooling pipe 25 is assembled to the cooling fan 24, and a second end of the cooling pipe 25 is assembled to the feeding ends 51a, 61a of the first burner 50 and the second burner 60, respectively, so as to provide cooling and supporting combustion effects to the spray gun 51 of the first burner 50 and the spray gun 61 of the second burner 60; specifically, the cooling fan 24 is installed at the foundation, and is supported by the foundation; of course, the heat exchanger may be mounted on the side wall of the furnace body 10 according to practical needs, and is not limited thereto.
As shown in fig. 7 and 8, in the first burner 50, the heat accumulating balls are located above the portion 521 of the heat accumulating chamber 52 for assembling and connecting with the second end of the first pipe 81, so that the gas entering the heat accumulating chamber 52 from the first pipe 81 flows through the heat accumulating balls from bottom to top and then flows to the feeding end 51a of the spray gun 51, and the flowing gas is better converted into hot air by the heat accumulating balls, thereby obtaining better combustion supporting effect; meanwhile, in the second burner 60, the heat accumulating balls are located above the portion 621 of the heat accumulating chamber 62 for assembling connection with the second end of the second pipe 82, so that the gas entering the heat accumulating chamber 62 from the second pipe 82 flows through the heat accumulating balls from bottom to top and then flows to the feeding end 61a of the spray gun 61, and the flowing gas is better converted into hot air by the heat accumulating balls, so that better combustion-supporting effect is obtained. Specifically, the second end of the first tube 81 is fitted at the bottom of the side wall of the regenerator 52 in the first burner 50, better ensuring that the gas entering the regenerator 52 flows from the bottom up through the heat accumulating balls; the second ends of the second tubes 82 are fitted at the bottom of the side walls of the regenerator 62 in the second burner 60 to better ensure that the gas entering the regenerator 62 flows up through the heat storage balls from the bottom; and thus are not limited to the above examples.
As shown in fig. 1, 4 and 5, in order to reduce the emission of pollutants, the heat-accumulating energy-saving melting reflection furnace 100 of the present invention further comprises an exhaust pipe 26 and a flue gate valve 27, wherein a first end of the exhaust pipe 26 is assembled to the ejector fan 22, specifically, is assembled to an outlet of the ejector fan 22, and is opposite to an inlet of the ejector fan 22 where a fourth pipe 84 is assembled; the flue gate valve 27 is mounted on the furnace body 10, and the exhaust of the exhaust pipe 26 is controlled by the flue gate valve 27, that is, by controlling the opening or closing of the exhaust pipe 26. For example, the flue gate valve 27 is an electric switch valve, but is not limited thereto.
As shown in fig. 1 and 2, the oven door apparatus 30 includes an oven door 31, a lifting bracket 32, and a lifting assembly 33. The lifting support 32 is assembled at the top of the furnace body 10, and the furnace body 10 provides support for the lifting support 32; the furnace door 31 is arranged on the furnace body 10 in a sliding manner along the up-down direction of the furnace body 10, so that the furnace door 31 can slide up and down relative to the furnace body 10; the lifting assembly 33 is assembled to the lifting bracket 32, and the lifting bracket 32 provides a supporting function for the lifting assembly 33; the lifting assembly 33 is also connected with the furnace door 31, and the lifting assembly 33 drives the furnace door 31 to perform lifting motion so as to open and close the feed inlet 12. Specifically, the lifting assembly 33 includes a lifting motor 33a, a first rotating shaft 33b, a second rotating shaft 33c, a counterweight 33d, a first sprocket 33e, a second sprocket 33f, and a chain 33g that is open end to end; the first rotating shaft 33b and the second rotating shaft 33c are spaced from each other and rotatably assembled on the lifting bracket 32, and the lifting bracket 32 provides a supporting function for the first rotating shaft 33b and the second rotating shaft 33 c; the first sprocket 33e is sleeved on the first rotating shaft 33b, so that the first sprocket 33e and the first rotating shaft 33b are fixed together; the second sprocket 33f is sleeved on the second rotating shaft 33c, so that the second sprocket 33f and the second rotating shaft 33c are fixed together; the head end of the chain 33g is assembled on the furnace door 31, the tail end of the chain 33g is assembled on the balancing weight 33d, the chain 33g is further wound on the first chain wheel 33e and the second chain wheel 33f, the balancing weight 33d is suspended on the lifting support 32, the lifting motor 33a is assembled on the lifting support 32 and drives the first rotating shaft 33b to rotate, the first chain wheel 33e synchronously rotates along with the first rotating shaft 33b by the rotating first rotating shaft 33b, and the chain 33g is driven by the rotating first chain wheel 33e to lift the furnace door 31 under the coordination of the second chain wheel 33 f. In order to provide stable and reliable lifting of the oven door 31, the lifting assembly 33 further comprises a guide wheel 33h and a traction metal wire 33j with an open end and an open end, the guide wheel 33h is respectively sleeved on the first rotating shaft 33b and the second rotating shaft 33c, the head end of the traction metal wire 33j is assembled on the oven door 31, the tail end of the traction metal wire 33j is assembled on the balancing weight 33d, and the traction metal wire 33j is further wound on the guide wheel 33h. In order to improve the synchronization and consistency of the lifting of the two sides of the oven door 31, the first rotating shaft 33b is of a long shaft structure crossing the lifting bracket 32, the second rotating shaft 33c is of a short shaft structure, the first chain wheels 33e are respectively sleeved at two ends of the first rotating shaft 33b, and the first chain wheels 33e in the same end are correspondingly provided with a second chain wheel 33f, a second rotating shaft 33c, two guide wheels 33h, a traction metal wire 33j and a chain 33g.
Compared with the prior art, the regenerative energy-saving melting reflection furnace 100 of the invention further comprises a first burner 50, a second burner 60, a reversing valve 70, a first pipe 81, a second pipe 82, a third pipe 83 and a fourth pipe 84, wherein the first burner 50 and the second burner 60 respectively comprise spray guns 51 and 61 and regenerators 52 and 62 internally provided with heat accumulating balls, the spray guns 51 and 61 are provided with injection ends 51a and 61a communicated with a melting cavity 11, the regenerators 52 and 62 are communicated with the injection ends 51a and 61a, a gas pipe 23 is respectively communicated with the injection ends 51a and 61a in the first burner 50 and the second burner 60, the reversing valve 70 is provided with at least a first reversing position and a second reversing position, first ends of the first pipe 81 to the fourth pipe 84 are respectively assembled at the reversing valve 70, second ends of the first pipe 81 are assembled at the regenerators 52 of the first burner 50, second ends of the second pipe 82 are assembled at the regenerators 62 of the second burner 60, and second ends of the second pipe 82 are assembled at the second regenerators 21 of the second burner 60 are assembled at the second ends of the regenerators 83; when the first combustion engine 50 burns, the reversing valve 70 is switched to the first reversing position, and the reversing valve 70 positioned at the first reversing position enables communication between the first pipe 81 and the third pipe 83 and also enables communication between the second pipe 82 and the fourth pipe 84; then, natural gas enters the first burner 50 from the gas pipe 23 and is sprayed into the melting cavity 11 of the furnace body 10 through the spray gun 51 of the first burner 50 for combustion; meanwhile, the combustion-supporting fan 21 sucks the external gas into the third pipe 83, and makes the sucked gas sequentially enter the feeding end 51a of the spray gun 51 of the first burner 50 along the third pipe 83, the first pipe 81 and the regenerator 52 of the first burner 50, and the gas passing through the regenerator 52 of the first burner 50 is changed into hot air under the action of the heat accumulating balls to support combustion so as to improve the combustion speed and the melting speed; synchronously, the injection fan 22 sucks and discharges smoke to the heat storage chamber 62 of the second combustor 60 through the fourth pipe 84 and the second pipe 82, heat in the flowing exhaust gas is absorbed by the heat storage balls of the second combustor 60, waste heat of the exhaust gas is absorbed and utilized by the heat storage balls of the second combustor 60, and pollutant discharge generated by low-oxygen combustion is low. When a certain temperature time is reached, the first burner 50 and the second burner 60 are switched to work, specifically, the reversing valve 70 is switched to a second reversing position, and the reversing valve 70 positioned at the second reversing position enables communication between the second pipe 82 and the third pipe 83 and also enables communication between the first pipe 81 and the fourth pipe 84; then, natural gas enters the second burner 60 from the gas pipe 23, and is sprayed into the melting cavity 11 of the furnace body 10 through the spray gun 61 of the second burner 60 for combustion; meanwhile, the combustion-supporting fan 21 sucks the external gas into the third pipe 83, and makes the sucked gas sequentially enter the feeding end 61a of the spray gun 61 of the second burner 60 along the third pipe 83, the second pipe 82 and the regenerator 62 of the second burner 60, and the gas passing through the regenerator 62 of the second burner 60 becomes hot air under the action of the heat accumulating balls to support combustion so as to improve the combustion speed and the melting speed; synchronously, the injection fan 22 sucks and discharges smoke to the heat accumulation chamber 52 of the first combustor 50 through the first pipe 81 and the fourth pipe 84, absorbs heat in the flowing exhaust gas through the heat accumulation balls of the first combustor 50, absorbs and utilizes the waste heat of the exhaust gas through the heat accumulation balls of the first combustor 50, and reduces the pollutant discharge generated by low-oxygen combustion. That is, when the reversing valve 70 is at the first switching position, the gas sucked into the third pipe 83 by the combustion fan 21 is discharged to the outside after passing through the third pipe 83, the first pipe 81, the first burner 50, the melting chamber 11, the second burner 60, the second pipe 82 and the fourth pipe 84 in sequence under the action of the combustion fan 21 and the ejector fan 22; similarly, when the reversing valve 70 is at the second switching position, the gas sucked into the third pipe 83 by the combustion fan 21 (i.e. the cold air sucked into the third pipe 83 from the outside) is sequentially discharged to the outside along the third pipe 83, the second pipe 82, the second burner 60, the melting chamber 11, the first burner 50, the first pipe 81 and the fourth pipe 84 under the action of the combustion fan 21 and the injection fan 22; therefore, the heat energy-saving melting reverberatory furnace 100 of the invention can solve the defects of low melting speed, low waste heat recovery and utilization rate and high pollutant emission caused by low-oxygen combustion.
It should be noted that the combustion fan 21, the ejector fan 22, the first burner 50 and the second burner 60 are installed at the foundation, and of course, they are installed at the furnace body 10 according to actual needs, but not limited thereto. In addition, to provide the melting effect, an electromagnetic stirrer may be disposed below the bottom of the furnace body 10, and the electromagnetic stirrer slides back and forth on the foundation.
The foregoing description of the preferred embodiments of the present invention is not intended to limit the scope of the claims, which follow, as defined in the claims.
Claims (3)
1. The heat accumulating energy saving type melting and reflecting furnace comprises a furnace body, a combustion-supporting fan, an injection fan, a gas pipe, a furnace door device and a gate device, wherein the furnace body is provided with a melting cavity, a feed port and a soup outlet, which are communicated with the melting cavity, the furnace door device is arranged on the furnace body and selectively opens and closes the feed port, the gate device is arranged on the furnace body and selectively opens and closes the soup outlet, the heat accumulating energy saving type melting and reflecting furnace is characterized by further comprising a first burner, a second burner, a reversing valve, a first pipe, a second pipe, a third pipe and a fourth pipe, the first burner and the second burner respectively comprise a spray gun and a heat accumulating chamber which are internally provided with heat accumulating balls, the spray gun is provided with a feed end and a jet end which are communicated with the melting cavity, the gas pipe is respectively communicated with the feed ends of the first burner and the second burner, the reversing valve is provided with at least a first reversing position and a second position, the first pipe is communicated with the second burner, the first burner is communicated with the second pipe, the second burner is communicated with the second burner, the reversing valve is communicated with the second heat accumulating chamber when the first burner is arranged between the first reversing pipe and the second burner and the second reversing pipe are respectively;
the heat accumulating energy-saving melting reflection furnace further comprises a cooling fan and a cooling pipe, wherein the first end of the cooling pipe is assembled on the cooling fan, and the second end of the cooling pipe is respectively assembled at the feeding ends of the first burner and the second burner;
in the first combustion engine, the heat storage balls are positioned above a part of the heat storage chamber, which is used for being assembled and connected with the second end of the first pipe; in the second burner, the heat accumulating balls are positioned above a part of the heat accumulating chamber, which is used for being assembled and connected with the second end of the second pipe;
the furnace door device comprises a furnace door, a lifting support and a lifting assembly, wherein the lifting support is assembled at the top of the furnace body, the furnace door is arranged on the furnace body in a sliding manner along the up-down direction of the furnace body, the lifting assembly is assembled on the lifting support, the lifting assembly is also connected with the furnace door, and the lifting assembly drives the furnace door to do lifting motion so as to open and close the feed inlet;
the lifting assembly comprises a lifting motor, a first rotating shaft, a second rotating shaft, a balancing weight, a first sprocket, a second sprocket and a chain with an open head and tail, wherein the first rotating shaft and the second rotating shaft are mutually spaced and are rotatably assembled on the lifting support, the first sprocket is sleeved on the first rotating shaft, the second sprocket is sleeved on the second rotating shaft, the head end of the chain is assembled on the furnace door, the tail end of the chain is assembled on the balancing weight, the chain is further wound on the first sprocket and the second sprocket, the balancing weight is suspended on the lifting support, and the lifting motor is assembled on the lifting support and drives the first rotating shaft to rotate;
the lifting assembly further comprises a guide wheel and a traction metal wire with an open head and tail, the guide wheel is sleeved on the first rotating shaft and the second rotating shaft respectively, the head end of the traction metal wire is assembled on the furnace door, the tail end of the traction metal wire is assembled on the balancing weight, and the traction metal wire is further wound on the guide wheel;
the first rotating shaft is of a long shaft structure crossing the lifting bracket, the second rotating shaft is of a short shaft structure, the first chain wheels are respectively sleeved at two ends of the first rotating shaft, and one second chain wheel, one second rotating shaft, two guide wheels, one traction metal wire and one chain are corresponding to the first chain wheels in the same end;
the first burner and the second burner are positioned outside the same side of the furnace body and are mutually parallel, and the reversing valve is a two-position four-way reversing valve.
2. The regenerative energy-saving melting reverberatory furnace according to claim 1, wherein the second end of the first tube is fitted at the bottom of the side walls of the regenerators in the first burner, and the second end of the second tube is fitted at the bottom of the side walls of the regenerators in the second burner.
3. The regenerative energy-saving melting reverberatory furnace according to claim 1, further comprising an exhaust pipe and a flue gate valve, wherein a first end of the exhaust pipe is assembled to the ejector fan, and the flue gate valve is assembled to the furnace body and controls exhaust of the exhaust pipe.
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