CN111912218A - Resource-saving long-age hot air cupola furnace - Google Patents

Resource-saving long-age hot air cupola furnace Download PDF

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Publication number
CN111912218A
CN111912218A CN202010919252.XA CN202010919252A CN111912218A CN 111912218 A CN111912218 A CN 111912218A CN 202010919252 A CN202010919252 A CN 202010919252A CN 111912218 A CN111912218 A CN 111912218A
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China
Prior art keywords
bell
furnace
small
rope
cupola
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Pending
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CN202010919252.XA
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Chinese (zh)
Inventor
上官美萍
上官文皓
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Yangcheng County Xinchenmei Casting Co ltd
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Yangcheng County Xinchenmei Casting Co ltd
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Priority to CN202010919252.XA priority Critical patent/CN111912218A/en
Publication of CN111912218A publication Critical patent/CN111912218A/en
Pending legal-status Critical Current

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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
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B1/20—Arrangements of devices for charging
    • 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
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
    • 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
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B1/12—Shells or casings; Supports therefor
    • 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
    • F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning 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
    • F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
    • 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
    • F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
    • F27D2007/063—Special atmospheres, e.g. high pressure atmospheres

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)

Abstract

The invention relates to the technical field of cupola smelting equipment, in particular to a resource-saving long-life hot air cupola. The cupola furnace comprises a cupola furnace base, a furnace hearth part, a furnace body part, a charging hole, a chimney, a smoke gas descending pipe, a furnace top part, a cooling water pipe of the muffle furnace, a hot air pipe of the muffle furnace, an air inlet branch pipe in the furnace, a mud gun plugging machine and an iron outlet. The invention solves the problem that the highest furnace temperature in the conventional thin and thin cupola furnace can only be about 1500 ℃, and the furnace is lack of sufficient reducing atmosphere. Is not suitable for smelting the raw materials of waste steel slag, waste ore, waste scrap iron and the like. The invention can improve the temperature of the cupola furnace, is beneficial to smelting raw materials such as waste steel slag, waste ore and the like, and improves the production efficiency; the cupola furnace gas can be recycled, the exhaust emission is reduced, the resources and the energy are saved, and the clean production is realized.

Description

Resource-saving long-age hot air cupola furnace
Technical Field
The invention relates to the technical field of cupola smelting equipment, in particular to a resource-saving long-life hot air cupola.
Background
The cupola furnace adopted by the conventional cast iron smelting comprises 15 ton/hour, 20 ton/hour and 25 ton/hour long-age hot air cupola furnace, the cupola furnace body is thin, and the thin and thin cupola furnace mainly melts the raw materials used for casting pig iron, casting return iron, partial scrap steel and the like. Under the general working conditions, the maximum furnace temperature of the thin and thin cupola furnace can only be about 1500 ℃, and the furnace also lacks enough reducing atmosphere. Is not suitable for smelting the raw materials of waste steel slag, waste ore, waste scrap iron and the like. Therefore, the conventional long-age hot blast cupola furnace needs to be improved for smelting the raw materials of waste steel slag, waste ore, waste scrap iron and the like to realize the utilization of three wastes.
Disclosure of Invention
The maximum furnace temperature in the conventional thin and thin cupola furnace can only be about 1500 ℃, and the furnace also lacks enough reducing atmosphere. Is not suitable for smelting the raw materials of waste steel slag, waste ore, waste scrap iron and the like. The invention provides a resource-saving type long-life hot air cupola furnace.
In order to achieve the purpose, the invention adopts the technical scheme that:
a resource-saving long-age hot air cupola comprises a cupola base, a furnace cylinder part, a furnace body part, a charging hole, a chimney, a smoke gas downcomer, a furnace top part, a cooling water pipe of a muffle, a hot air pipe of the muffle, an air inlet branch pipe in the furnace, a mud gun plugging machine and an iron outlet; the inner diameter of the furnace hearth of the furnace body part is 12-15% larger than that of the conventional cupola with the same tonnage, the conventional thin and thin furnace type is changed into the coarse fertilizer furnace type, and the temperature of the cupola can be increased by 100-200 ℃.
Further, the furnace top portion includes: an upper bell-type charging hopper, a double bell-type sealed storage bin, a lower bell-type furnace middle cover, a large bell lifting pipe, a small bell and a small bell lifting pipe;
the upper bell-type charging hopper is provided with a large upper round opening and a small lower round opening which are arranged in parallel;
the double-bell sealed storage bin is in a round drum shape, and an upper feeding round opening and a lower discharging round opening are arranged in parallel up and down;
the middle cover of the lower bell-type furnace is provided with a small upper round opening and a large lower round opening, and the upper round opening and the lower round opening are arranged in parallel;
the big bell is in a big horn shape and can be arranged under the double bell sealed storage bin in an opening and closing way, and the big bell lifting pipe is vertically arranged above the big bell;
the small bell is in a small horn shape and can be arranged right above the inner side of the double bell sealed storage bin in an opening and closing way; the small bell lifting pipe is arranged right above the small bell;
the upper bell-type charging hopper, the double-bell-type sealed storage bin, the lower bell-type furnace middle cover, the large bell lifting pipe, the small bell and the small bell lifting pipe are all arranged vertically to the cupola body in concentric circles;
the periphery of the upper opening of the upper bell-type charging hopper and the bottom edge of the charging opening are horizontal reference surfaces and are horizontally and hermetically connected with the inner periphery of the furnace at the top part of the furnace;
the outer side of the lower part of the upper bell-type charging hopper is hermetically connected with the upper opening of the double-bell airtight storage bin;
the outer side of the lower opening part of the double-bell airtight storage bin is hermetically connected with the upper opening of the lower bell-type furnace cover;
the periphery of a lower opening of a middle cover of the lower bell-type furnace is horizontally and hermetically connected with the periphery of the furnace inside the furnace top part;
the big bell lifting pipe and the small bell lifting pipe are arranged in a vertical sleeve type, the big bell lifting pipe is arranged in the small bell lifting pipe, and the big bell lifting pipe and the small bell lifting pipe can slide up and down relatively.
In a further step, the furnace top part further comprises the big and small bell vertical lifting devices and a rope pulley fixing bracket, and the big and small bell vertical lifting devices comprise: a small bell lifting rope 1, a small bell lifting rope 2, a small bell rope pulley 1 and a small bell rope pulley 2; a big bell lifting rope and a big bell rope wheel;
one end of the small bell lifting rope 1 and one end of the small bell lifting rope 2 are respectively fixedly connected with two sides of the top of the small bell lifting pipe; the other end of the small bell lifting rope 1 and the other end of the small bell lifting rope 2 are respectively connected with the small bell rope wheel 1 and the small bell rope wheel 2 in a sliding way;
one end of the big bell lifting rope is fixedly connected with the top of the big bell lifting pipe, and the other end of the big bell lifting rope is slidably connected with the big bell rope wheel;
the rope wheel fixing support is arranged on the inner wall of the furnace at the upper part of the furnace top part, and the small bell rope wheel 1, the small bell rope wheel 2 and the large bell rope wheel are respectively connected with the rope wheel fixing support; the small bell lifting rope 1, the small bell lifting rope 2 and the large bell lifting rope are respectively connected with a winch and an automatic transmission device (the device belongs to conventional arrangement, and is not shown in the attached drawing) arranged outside the furnace at the furnace top part through the small bell rope pulley 1, the small bell rope pulley 2 and the large bell rope pulley, so that the opening and closing actions of the large bell and the small bell are respectively realized.
Further, the roof section further comprises: the gas outlet on the left side of the furnace and the gas outlet on the right side of the furnace are both cylindrical, are respectively symmetrically and fixedly arranged on the outer peripheral wall of the cupola at the lower opening of the middle cover (73) of the lower bell-type furnace in parallel and are communicated with the inside of the furnace.
When the resource-saving long-age hot air cupola furnace is operated, firstly, the cupola furnace is ignited to be charged, and raw materials such as waste steel slag, waste ore, waste scrap iron and the like required for smelting and required limestone solvent are respectively added from the charging opening of the cupola furnace through an upper bell-type charging hopper according to different raw materials and solvent weights of each batch. The specific operation sequence is as follows: and (3) starting the vertical lifting device of the large bell and the small bell, firstly opening the small bell downwards when the large bell and the small bell are in a closed state, adding the required raw materials or solvents into the double bell storage bin from the upper bell-type hopper, then closing the small bell upwards, opening the large bell downwards, and after the raw materials or solvents in the double bell storage bin are discharged into the cupola furnace, closing the large bell upwards. The process is repeated in this way, and the cupola furnace is sealed for charging.
The invention is suitable for smelting the steel slag, the waste ore, the scrap iron and the like which are used as raw materials, and the production tonnage is as follows: 15 tons/hour, 20 tons/hour, 25 tons/hour long-life hot blast cupola furnace.
The invention can realize the following beneficial effects:
1. the invention increases the diameter of the hearth, increases the furnace volume and increases the burning quantity of the raw materials compared with the conventional thin cupola furnace with the same tonnage, and the double bell sealed storage bin is arranged at the charging port of the cupola furnace, thereby blocking the waste of the rise of the heat source in the furnace, not only saving the energy to the utmost extent, but also obviously improving the furnace temperature of the hearth of the cupola furnace with the same tonnage by 100-fold at 200 ℃.
2. The invention realizes the sealed charging of the cupola furnace, blocks the direct cupola of the furnace gas of the conventional cupola furnace, and can reduce the emission pollution of waste gas because the double-bell sealed storage bin is arranged at the charging port of the conventional cupola furnace.
3. The invention can effectively improve the gas flow state of the center and the edge in the furnace of the conventional cupola furnace, increase the reducing atmosphere in the furnace, lead the raw materials in the furnace to tend to move downwards synchronously, accelerate the smelting speed of the raw materials such as waste steel slag, waste ore and the like in the furnace and improve the production efficiency.
4. The furnace wall at the lower opening of the lower bell-type furnace cover is respectively and symmetrically and horizontally provided with the left-side gas outlet and the right-side gas outlet, so that redundant waste gas continuously generated in the furnace can be conveyed to the ball-type hot blast furnace to heat the cold air temperature and conveyed to the gas boiler for full utilization. And because the coal gas outlets are symmetrically arranged, the combustion atmosphere in the furnace cannot be changed, and the smooth operation of the cupola furnace cannot be influenced.
In conclusion, the invention can improve the temperature of the cupola furnace, increase the reducing atmosphere in the furnace, facilitate the smelting of the raw materials such as waste steel slag, waste ore and the like and improve the production efficiency; the cupola furnace gas can be recycled, the exhaust emission is reduced, resources and energy sources are saved, the environmental pollution is reduced, clean production is realized, and the comprehensive economic benefit is improved.
Drawings
FIG. 1 is a schematic elevation view of a resource-saving, long-life, hot-blast cupola;
FIG. 2 is a schematic view showing a comparison of a conventional slim type long-life hot air cupola;
FIG. 3 is a schematic view of the top portion of the cupola furnace of the present invention.
In the figure: 1-cupola base, 2-hearth part, 3-furnace body part, 4-charging hole, 5-chimney, 6-smoke gas down pipe, 7-furnace top part, 8-cooling water pipe around furnace, 9-hot air pipe around furnace, 10-air inlet branch pipe inside furnace, 11-mud gun plugging machine, 12-iron outlet;
wherein: 71-an upper bell-type charging hopper, 72-a double bell-type sealed storage bin, 73-a lower bell-type furnace middle cover, 74-a large bell, 75-a large bell lifting pipe, 76-a small bell, 77-a small bell lifting pipe, 78-a large bell vertical lifting device and 79-a rope pulley fixing support;
781-small bell lifting rope 1, 782-small bell lifting rope 2, 783-small bell rope wheel 1, 784-small bell rope wheel 2; 785-a large bell lifting rope and 786-a large bell rope wheel;
80-left gas outlet of the furnace, 81-right gas outlet of the furnace.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in fig. 1-3, the resource-saving long-life hot-air cupola furnace in the embodiment comprises a cupola furnace base (1), a furnace cylinder part (2), a furnace body part (3), a charging hole (4), a chimney (5), a smoke gas downcomer (6), a furnace top part (7), a muffle cooling water pipe (8), a muffle hot-air pipe (9), an in-furnace air inlet branch pipe (10), a mud gun plugging machine (11) and an iron outlet (12); the furnace is characterized in that the inner diameter of the furnace hearth of the furnace body part (3) is 12-15% larger than that of the conventional cupola with the same tonnage, the conventional thin and thin furnace type is improved into the furnace type with the shape of coarse fertilizer, and the temperature of the cupola can be increased by 100-.
Further, the roof section (7) comprises: an upper bell-type charging hopper (71), a double bell-type sealed storage bin (72), a lower bell-type furnace middle cover (73), a large bell (74), a large bell lifting pipe (75), a small bell (76) and a small bell lifting pipe (77);
the upper bell-type charging hopper (71) is provided with a large upper round opening and a small lower round opening which are arranged in parallel;
the double-bell sealed storage bin (72) is in a round drum shape, and an upper feeding round opening and a lower discharging round opening are arranged in parallel up and down;
the middle cover (73) of the lower bell-type furnace is provided with a small upper round opening and a large lower round opening which are arranged in parallel;
the big bell (74) is in a big horn shape and is arranged under the double bell sealed storage bin (72) in an openable and closable manner, and the big bell lifting pipe (75) is vertically arranged above the big bell (74);
the small bell (76) is in a small horn shape and can be arranged right above the inner side of the double bell sealed storage bin (72) in an opening and closing way; the small bell lifting pipe (77) is arranged right above the small bell (76);
the upper bell-type charging hopper (71), the double bell-type sealed storage bin (72), the lower bell-type furnace middle cover (73), the large bell (74), the large bell lifting pipe (75), the small bell (76) and the small bell lifting pipe (77) are all arranged vertically to the cupola body in concentric circles;
the outer periphery of the upper opening of the upper bell-type charging hopper (71) and the bottom edge of the charging opening (4) are horizontal reference surfaces and are horizontally and hermetically connected with the inner periphery of the furnace top part (7);
the outer side of the lower part of the upper bell-type charging hopper (71) is hermetically connected with the upper opening of the double-bell airtight storage bin (72);
the outer side of the lower opening of the double-bell sealed storage bin (72) is hermetically connected with the upper opening of a middle cover (73) of the lower bell-type furnace;
the periphery of the lower opening of the middle cover (73) of the lower bell-type furnace is horizontally and hermetically connected with the inner periphery of the furnace top part (7);
big bell lifting pipe (75) with little bell lifting pipe (77) are vertical sleeve formula setting, big bell lifting pipe (75) set up in little bell lifting pipe (77), big bell lifting pipe (75) with little bell lifting pipe (77) can slide the lift from top to bottom relatively.
Further, the furnace top portion (7) further comprises a large bell vertical lifting device (78) and a small bell vertical lifting device (78) and a rope wheel fixing bracket (79), and the large bell vertical lifting device (78) and the small bell vertical lifting device (78) comprise: a small bell lifting rope 1(781), a small bell lifting rope 2(782), a small bell rope wheel 1(783) and a small bell rope wheel 2 (784); a big bell lifting rope (785) and a big bell rope wheel (786);
one end of the small bell lifting rope 1(781) and one end of the small bell lifting rope 2(782) are respectively and fixedly connected with two sides of the top of the small bell lifting pipe (77); the other end of the small bell lifting rope 1(781) and the other end of the small bell lifting rope 2(782) are respectively connected with the small bell rope wheel 1(783) and the small bell rope wheel 2(784) in a sliding way;
one end of the big bell lifting rope (785) is fixedly connected with the top of the big bell lifting pipe (75), and the other end of the big bell lifting rope (785) is slidably connected with the big bell rope wheel (786);
the rope wheel fixing support (79) is horizontally arranged on the inner wall of the upper furnace of the furnace top part (7), and the small bell rope wheel 1(783), the small bell rope wheel 2(784) and the large bell rope wheel (786) are respectively connected with the rope wheel fixing support (79); the small bell lifting rope 1(781), the small bell lifting rope 2(782) and the large bell lifting rope (785) are respectively connected with a winch and an automatic transmission device arranged outside the furnace top part (7) through the small bell rope pulley 1(783), the small bell rope pulley 2(784) and the large bell rope pulley (786) (the device belongs to the conventional arrangement, and is not shown in the attached drawing), so that the opening and closing actions of the large bell and the small bell are respectively realized.
Further, the roof section (7) further comprises: the gas outlet (80) on the left side of the furnace and the gas outlet (81) on the right side of the furnace are both cylindrical, are respectively symmetrically, parallelly and fixedly arranged on the outer peripheral wall of the cupola furnace at the lower opening of the middle cover (73) of the lower bell-type furnace and are communicated with the inside of the furnace.
When the resource-saving long-age hot air cupola furnace is operated, firstly, the cupola furnace is ignited to be charged, and raw materials such as waste steel slag, waste ore, waste scrap iron and the like required for smelting and required limestone solvent are respectively added from the charging opening (4) of the cupola furnace through an upper bell-type charging hopper (71) according to different raw materials and solvent weights of each batch. The specific operation sequence is as follows: and (3) starting the vertical lifting device (78) of the large bell and the small bell, firstly opening the small bell (76) downwards when the large bell and the small bell are in a closed state, adding required raw materials or solvents into the double bell storage bin (72) from the upper bell-type hopper (71), then closing the small bell (76) upwards, opening the large bell (74) downwards, and closing the large bell (74) upwards after the raw materials or solvents in the double bell storage bin (72) are discharged into the cupola furnace. The process is repeated in this way, and the cupola furnace is sealed for charging.
The invention is suitable for smelting the steel slag, the waste ore, the scrap iron and the like which are used as raw materials, and the production tonnage is as follows: 15 tons/hour, 20 tons/hour, 25 tons/hour long-life hot blast cupola furnace.

Claims (4)

1. A resource-saving long-age hot air cupola comprises a cupola base (1), a hearth part (2), a furnace body part (3), a charging hole (4), a chimney (5), a smoke gas descending pipe (6), a furnace top part (7), a cooling water pipe (8) of a muffle, a hot air pipe (9) of the muffle, an air inlet branch pipe (10) in the furnace, a mud gun plugging machine (11) and an iron outlet (12); the furnace is characterized in that the inner diameter of the furnace hearth of the furnace body part (3) is 12-15% larger than that of the furnace hearth of the conventional cupola furnace with the same tonnage, and the conventional thin and thin furnace type is improved into a coarse fertilizer furnace type.
2. A resource-saving, long-life, hot-blast cupola furnace according to claim 1, in which the roof section (7) comprises: an upper bell-type charging hopper (71), a double bell-type sealed storage bin (72), a lower bell-type furnace middle cover (73), a large bell (74), a large bell lifting pipe (75), a small bell (76) and a small bell lifting pipe (77);
the upper bell-type charging hopper (71) is provided with a large upper round opening and a small lower round opening which are arranged in parallel;
the double-bell sealed storage bin (72) is in a round drum shape, and an upper feeding round opening and a lower discharging round opening are arranged in parallel up and down;
the middle cover (73) of the lower bell-type furnace is provided with a small upper round opening and a large lower round opening which are arranged in parallel;
the big bell (74) is in a big horn shape and is arranged under the double bell sealed storage bin (72) in an openable and closable manner, and the big bell lifting pipe (75) is vertically arranged above the big bell (74);
the small bell (76) is in a small horn shape and can be arranged right above the inner side of the double bell sealed storage bin (72) in an opening and closing way; the small bell lifting pipe (77) is arranged right above the small bell (76);
the upper bell-type charging hopper (71), the double bell-type sealed storage bin (72), the lower bell-type furnace middle cover (73), the large bell (74), the large bell lifting pipe (75), the small bell (76) and the small bell lifting pipe (77) are all arranged vertically to the cupola body in concentric circles;
the outer periphery of the upper opening of the upper bell-type charging hopper (71) and the bottom edge of the charging opening (4) are horizontal reference surfaces and are horizontally and hermetically connected with the inner periphery of the furnace top part (7);
the outer side of the lower part of the upper bell-type charging hopper (71) is hermetically connected with the upper opening of the double-bell airtight storage bin (72);
the outer side of the lower opening of the double-bell sealed storage bin (72) is hermetically connected with the upper opening of a middle cover (73) of the lower bell-type furnace;
the periphery of the lower opening of the middle cover (73) of the lower bell-type furnace is horizontally and hermetically connected with the inner periphery of the furnace top part (7);
big bell lifting pipe (75) with little bell lifting pipe (77) are vertical sleeve formula setting, big bell lifting pipe (75) set up in little bell lifting pipe (77), big bell lifting pipe (75) with little bell lifting pipe (77) can slide the lift from top to bottom relatively.
3. The resource efficient, long-life, hot-blast cupola according to claim 1, in which the roof section (7) further comprises the large and small bell elevators (78) and the sheave fixing brackets (79), the large and small bell elevators (78) comprising: a small bell lifting rope 1(781), a small bell lifting rope 2(782), a small bell rope wheel 1(783) and a small bell rope wheel 2 (784); a big bell lifting rope (785) and a big bell rope wheel (786);
one end of the small bell lifting rope 1(781) and one end of the small bell lifting rope 2(782) are respectively and fixedly connected with two sides of the top of the small bell lifting pipe (77); the other end of the small bell lifting rope 1(781) and the other end of the small bell lifting rope 2(782) are respectively connected with the small bell rope wheel 1(783) and the small bell rope wheel 2(784) in a sliding way;
one end of the big bell lifting rope (785) is fixedly connected with the top of the big bell lifting pipe (75), and the other end of the big bell lifting rope (785) is slidably connected with the big bell rope wheel (786);
the rope wheel fixing support (79) is horizontally arranged on the inner wall of the upper furnace of the furnace top part (7), and the small bell rope wheel 1(783), the small bell rope wheel 2(784) and the large bell rope wheel (786) are respectively connected with the rope wheel fixing support (79); the small bell lifting rope 1(781), the small bell lifting rope 2(782) and the large bell lifting rope (785) are respectively connected with a winch and an automatic transmission device arranged outside the furnace top part (7) through the small bell rope pulley 1(783), the small bell rope pulley 2(784) and the large bell rope pulley (786) to respectively realize the opening and closing actions of the large bell and the small bell.
4. A resource-saving, long-life, hot-blast cupola furnace according to claim 1, in which the roof section (7) further comprises: the gas outlet (80) on the left side of the furnace and the gas outlet (81) on the right side of the furnace are both cylindrical, are respectively symmetrically, parallelly and fixedly arranged on the outer peripheral wall of the cupola furnace at the lower opening of the middle cover (73) of the lower bell-type furnace and are communicated with the inside of the furnace.
CN202010919252.XA 2020-09-04 2020-09-04 Resource-saving long-age hot air cupola furnace Pending CN111912218A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010919252.XA CN111912218A (en) 2020-09-04 2020-09-04 Resource-saving long-age hot air cupola furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010919252.XA CN111912218A (en) 2020-09-04 2020-09-04 Resource-saving long-age hot air cupola furnace

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Publication Number Publication Date
CN111912218A true CN111912218A (en) 2020-11-10

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Application Number Title Priority Date Filing Date
CN202010919252.XA Pending CN111912218A (en) 2020-09-04 2020-09-04 Resource-saving long-age hot air cupola furnace

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