An energy-saving and environment-friendly multifunctional smelting furnace

Abstract

The present invention discloses an energy-saving and environment-friendly multifunctional smelting furnace, comprising a cupola and a feeding device, a self-priming feeding device is fixedly arranged in the furnace top of the cupola, and also comprises a gravity dust collector, a plurality of dust purifiers, a plurality of hot air combustion chambers, a fan, and a gas purification combustion chamber, the furnace top is connected in series with the gravity dust collector and the dust purifier in sequence by setting a smoke exhaust pipe, the upper end and the lower end between the dust purifier are respectively connected in series through pipes, and the pipe located at the lower end is connected in series with a plurality of hot air combustion chambers, the fan is connected in parallel with a plurality of hot air combustion chambers, the gas purification combustion chamber is connected with the smoke exhaust pipe between the gravity dust collector and the dust purifier through a recovery pipe, and the feeding mechanism is fixedly connected with the feeding port of the furnace top. The present invention has a simple structure and is easy to use, can increase the iron-coke ratio to realize energy saving, and can achieve dust-free and smoke-free, meets the requirements of green environmental protection production, can reduce the equipment failure rate, ensure normal production, and improve efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of smelting furnaces, and in particular to an energy-saving and environment-friendly multifunctional smelting furnace. Background Art

[0002] In the processing of traditional cupolas, since the raw materials are pig iron blocks and coke of a certain specification, it is impossible to use mechanisms such as charging bells during the charging process. Secondly, the temperature at the top of the cupola is high and the environment is harsh, so there is no good solution on the market so far. In addition, cupolas below 1.15 tons cannot be opened for a long time, the dust collection efficiency of the dust collection hood is low, the heat recovery is low, and the coal gas cannot be recovered, which cannot achieve the effect of energy saving and emission reduction.

[0003] During the processing, traditional steel slag smelting furnaces are prone to produce large amounts of smoke emissions due to uneven material blocks and the inability to close the feeding system. The heat utilization rate is low, the gas cannot be recovered, and the temperature is difficult to control, resulting in abnormal pouring.

[0004] Although seals are installed on the charging bell of small iron-making blast furnaces during the processing, the long-term wear and tear of charging cannot guarantee the sealing of the feed port. As a result, the heat loss is large, the smoke and dust are much, and the furnace is prohibited from use due to its low thermal efficiency. Summary of the invention

[0005] The purpose of the present invention is to provide an energy-saving and environment-friendly multifunctional smelting furnace in view of the defects and shortcomings of the prior art.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an energy-saving and environmentally friendly multifunctional smelting furnace, including a blast furnace and a feeding device, a self-priming feeding device is fixedly arranged in the furnace top of the blast furnace, and its innovation lies in: it also includes a gravity dust collector, a plurality of dust purifiers, a plurality of hot air combustion chambers, a fan, and a gas purification combustion chamber. The furnace top is connected in series with the gravity dust collector and the dust purifier in sequence by arranging a smoke exhaust pipe, the upper and lower ends of the dust purifiers are respectively connected in series through pipes, and the pipe at the lower end is connected in series with a plurality of hot air combustion chambers, the fan is connected in parallel with a plurality of hot air combustion chambers, and the gas purification combustion chamber is connected to the smoke exhaust pipe between the gravity dust collector and the dust purifier through a recovery pipe, and the feeding mechanism is fixedly connected to the feeding port of the furnace top.

[0007] Furthermore, there are at least four dust removal purifiers.

[0008] Furthermore, there are at least two hot air combustion chambers.

[0009] Furthermore, the loading device includes an inclined material channel, a material cart, and a winch. The material cart is located on the material channel. A connecting rod is fixedly arranged on the material cart. One end of the connecting rod is hinged to the material cart, and the other end is fixedly connected to the winch by a chain. The winch can pull the material cart up and down along the material channel through the chain.

[0010] Furthermore, the material port of the material cart is an inclined structure, and the material port cooperates with the feed port on the furnace top. The material cart can block the feed port, and the material port of the material cart is connected to the self-priming feeding device.

[0011] After adopting the above structure, the beneficial effects of the present invention are:

[0012] The present invention has a simple structure and is easy to use. It can increase the iron-to-coke ratio to achieve energy saving, and can be dust-free and smoke-free, meeting the requirements of green and environmentally friendly production. It can reduce the equipment failure rate, ensure normal production, and improve efficiency. It can change the smelting method in time according to different materials to ensure molten iron under the same requirements, increase direct economic sources, and increase the smelting speed and coking speed, thereby improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention.

[0014] Description of reference numerals:

[0015] 1 cupola, 11 furnace top, 2 loading device, 21 material channel, 22 material car, 23 winch, 24 connecting rod, 25 chain, 3 self-priming feeding device, 4 gravity dust collector, 5 dust purifier, 6 hot air combustion chamber, 7 fan, 8 gas purification combustion chamber. DETAILED DESCRIPTION

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described herein are only used to explain the present invention and are not used to limit the present invention.

[0018] See also Figure 1A multifunctional energy-saving and environment-friendly smelting furnace comprises a cupola 1 and a feeding device 2. A self-priming feeding device 3 is fixedly arranged in the furnace top 11 of the cupola 1. It also comprises a gravity dust collector 4, a plurality of dust purifiers 5, a plurality of hot air combustion chambers 6, a fan 7, and a gas purification combustion chamber 8. The furnace top 11 is connected in series with the gravity dust collector 4 and the dust purifier 5 in sequence by setting a smoke exhaust pipe. The upper and lower ends of the dust purifiers 5 are respectively connected in series through pipes, and the pipes at the lower ends are connected in series with the plurality of hot air combustion chambers 6. The fan 7 is connected in parallel with the plurality of hot air combustion chambers 6. The gas purification combustion chamber 8 is connected to the smoke exhaust pipe between the gravity dust collector 4 and the dust purifier 5 through a recovery pipe. The feeding mechanism 2 is fixedly connected to the feeding port of the furnace top 11. The fan 7 blows the hot air combustion chamber 6 back into the dust purifier 5, which can improve the efficiency of dust removal and purification. At the same time, the excess gas can enter the gas purification combustion chamber 8 through the recovery pipeline to continue burning, avoiding the excess gas from being discharged into the atmosphere and causing air pollution.

[0019] In this embodiment, there are at least four dust removal purifiers 5, which can improve the purification efficiency, ensure that the smoke and dust can be completely purified, and ensure that there is no dust and smoke in the production process.

[0020] In this embodiment, there are at least two hot air combustion chambers 6 to ensure that the hot air in the hot air combustion chambers 6 is sufficient for the dust removal purifier 5 to use, thereby improving the dust removal efficiency.

[0021] In this embodiment, the feeding device 2 includes an inclined material channel 21, a material cart 22, and a winch 23. The material cart 22 is located on the material channel 21. A connecting rod 24 is fixedly arranged on the material cart 22. One end of the connecting rod 24 is hinged to the material cart 22, and the other end thereof is fixedly connected to the winch 23 by setting a chain 25. The winch 23 can pull the material cart 22 to move up and down along the material channel 21 through the chain 25. After the winch 23 is started, the material cart 22 is pulled upward along the material channel 21 through the chain 25. When the material cart 22 reaches the feed port, it docks with the self-priming feeding device 3. At this time, the material cart 22 is in a tilted state, and then the self-priming feeding device 3 is started to suck the material in the material cart 22 and discharge it into the cupola 1 for processing.

[0022] In this embodiment, the material port of the material cart 22 is an inclined structure, and the material port cooperates with the material inlet of the furnace top 11, the material cart 22 can block the material inlet, and the material inlet of the material cart 22 is connected to the self-priming feeding device 3. When the material cart 22 can block the material inlet, the furnace top 11 is in a sealed state, which can effectively prevent smoke and dust from leaking out and prevent environmental pollution.

[0023] The above description is only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. An energy-saving and environment-friendly multifunctional smelting furnace, comprising a cupola and a charging device, wherein a self-priming charging device is fixedly arranged in the top of the cupola, characterized in that: It also includes a gravity dust collector, several dust purifiers, several hot air combustion chambers, a fan, and a gas purification combustion chamber. The furnace top is connected in series with the gravity dust collector and the dust purifier in sequence by setting a smoke exhaust pipe. The upper and lower ends of the dust purifiers are connected in series through pipes respectively, and the pipe at the lower end is connected in series with several hot air combustion chambers. The fan is connected in parallel with several hot air combustion chambers. The gas purification combustion chamber is connected to the smoke exhaust pipe between the gravity dust collector and the dust purifier through a recovery pipe, and the feeding device is fixedly connected to the feeding port of the furnace top; The number of the dust removal purifiers is at least 4; There are at least two hot air combustion chambers; The feeding device includes an inclined material channel, a material cart, and a winch. The material cart is located on the material channel. A connecting rod is fixedly arranged on the material cart. One end of the connecting rod is hinged to the material cart, and the other end is fixedly connected to the winch by a chain. The winch can pull the material cart up and down along the material channel through the chain.

2. The energy-saving and environment-friendly multifunctional smelting furnace according to claim 1, characterized in that: The material port of the material cart is an inclined structure, and the material port cooperates with the feed port of the furnace top. The material cart can block the feed port, and the material port of the material cart is connected to the self-priming feeding device.

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