Closed environment-friendly energy-saving refining furnace

Abstract

The utility model discloses a closed environment-friendly energy-saving refining furnace which comprises an outer steel cylinder, a low-nitrogen combustor is arranged on one side of the outer steel cylinder, a smoke outlet pipe is arranged on one side of the outer steel cylinder, an air supply assembly is arranged at the top of the outer steel cylinder, and the air supply assembly comprises a heat exchange box fixedly connected to one side of the outer steel cylinder. The two ends of the smoke outlet pipe are connected to the inner walls of the top end and the bottom end of the heat exchange box in a penetrating and inserting mode correspondingly, and a negative pressure fan is arranged on one side of the heat exchange box. Through the design of the negative pressure fan, the air conveying pipe, the heat exchange box and the air inlet pipe, when refining is carried out, heated smoke is exhausted from the refining furnace through the smoke outlet pipe, air is input into the air conveying pipe through the negative pressure fan, the air is input into the heat exchange box through the air conveying pipe, and the air is heated through the smoke outlet pipe in the heat exchange box; and finally, the heated air is input into the refining furnace through the air inlet pipe, and the reduced temperature in the refining furnace is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of refining furnaces, in particular to a closed, environmentally friendly and energy-saving refining furnace. Background Art

[0002] A refining furnace is a piece of equipment used to smelt, refine or refine metals, alloys or other substances.

[0003] In order to improve the efficiency of combustion, air is input into the refining furnace so that the oxygen in the air can promote the combustion process. The traditional input method is to directly input air into the interior of the refining furnace through a pipe through a fan. The temperature of the air input into the refining furnace is lower than the temperature inside the refining furnace, which causes the temperature inside the refining furnace to decrease. Utility Model Content

[0004] The purpose of the utility model is to provide a closed, environmentally friendly and energy-saving refining furnace to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a closed, environmentally friendly and energy-saving refining furnace, comprising an outer steel cylinder, a low-nitrogen burner is arranged on one side of the outer steel cylinder, a smoke outlet pipe is arranged on one side of the outer steel cylinder, an air supply assembly is arranged on the top of the outer steel cylinder, the air supply assembly comprises a heat exchange box fixedly connected to one side of the outer steel cylinder, the two ends of the smoke outlet pipe are respectively inserted and connected to the inner walls of the top and bottom ends of the heat exchange box, a negative pressure fan is arranged on one side of the heat exchange box, an air supply pipe is arranged on one side of the negative pressure fan, the air supply pipe is inserted and connected to the top of the smoke outlet pipe, an air intake pipe is inserted and connected to the bottom of the heat exchange box, and the air intake pipe is inserted and connected to one side of the outer steel cylinder.

[0006] Preferably, a fixing seat is fixedly connected to one side of the heat exchange box, and the negative pressure fan is arranged on the top of the fixing seat.

[0007] Preferably, a heat storage brick layer is interspersed and connected inside the outer steel cylinder, and a refractory brick layer is interspersed and connected inside the heat storage brick layer.

[0008] Preferably, an oxygen content detection instrument is inserted and connected to the other side of the outer steel cylinder, and a fixing flange is sleeved on the middle part of the oxygen content detection instrument, and the fixing flange is fixedly connected to the other side of the outer steel cylinder.

[0009] Preferably, a feed port is provided at the top of the outer steel cylinder, and a sealing cover for closing the feed port is sleeved on the top of the feed port.

[0010] Preferably, a discharge pipe for discharging materials is provided on the other side of the outer steel cylinder, and a control valve is provided in the middle of the discharge pipe.

[0011] Technical effects and advantages of the utility model:

[0012] The utility model adopts the design of negative pressure fan, air delivery pipe, heat exchange box and air inlet pipe. When refining is carried out, the heated smoke is discharged from the refining furnace through the smoke outlet pipe, the air is input into the air delivery pipe through the negative pressure fan, and the air is input into the heat exchange box through the air delivery pipe, and the air is heated through the smoke outlet pipe in the heat exchange box, and finally the heated air is input into the interior of the refining furnace through the air inlet pipe, so as to reduce the temperature drop in the refining furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0014] Figure 2 It is a front sectional structural schematic diagram of the utility model.

[0015] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure of part A.

[0016] In the figure: 1. outer steel cylinder; 2. low nitrogen burner; 3. smoke outlet pipe; 4. negative pressure fan; 5. air supply pipe; 6. heat exchange box; 7. air inlet pipe; 8. fixed seat; 9. heat storage brick layer; 10. refractory brick layer; 11. oxygen content detection instrument; 12. feed inlet; 13. sealing cover; 14. discharge pipe; 15. control valve; 16. fixing flange. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] The utility model provides Figure 1-3 A closed, environmentally friendly and energy-saving refining furnace is shown, comprising an outer steel cylinder 1, a low-nitrogen burner 2 is arranged on one side of the outer steel cylinder 1, a smoke outlet pipe 3 is arranged on one side of the outer steel cylinder 1, an air supply assembly is arranged on the top of the outer steel cylinder 1, and the air supply assembly comprises a heat exchange box 6 fixedly connected to one side of the outer steel cylinder 1, two ends of the smoke outlet pipe 3 are respectively inserted and connected to the inner walls of the top and bottom ends of the heat exchange box 6, a negative pressure fan 4 is arranged on one side of the heat exchange box 6, an air supply pipe 5 is arranged on one side of the negative pressure fan 4, the air supply pipe 5 is inserted and connected to the top of the smoke outlet pipe 3, an air intake pipe 7 is inserted and connected to the bottom of the heat exchange box 6, and the air intake pipe 7 is inserted and connected to one side of the outer steel cylinder 1.

[0019] It should be noted that the low-nitrogen burner 2 is a gas-fired low-nitrogen burner of model SQM10. When in use, coal gas is used as fuel. The material of the outer steel cylinder 1 is manganese steel, which has high strength, wear resistance and heat resistance, thereby avoiding the deformation of the outer shell of the refining furnace due to heat and collision when the refining furnace is in use; the part of the smoke outlet pipe 3 located inside the heat exchanger box 6 is made of metal, and the metal material has thermal conductivity; the main function of the negative pressure fan 4 is to generate negative pressure through a driving device, so that air or other gases flow from a low-pressure area to a high-pressure area, thereby transporting air to the inside of the air duct 5, and inputting air into the inside of the heat exchanger box 6 through the air duct 5. When the air contacts the smoke outlet pipe 3 in the heat exchanger box 6, the heat of the smoke in the smoke outlet pipe 3 is transferred to the control, thereby heating the air.

[0020] Furthermore, during refining, the heated flue gas is discharged from the refining furnace through the smoke outlet pipe 3, the air is input into the air supply pipe 5 through the negative pressure fan 4, and the air is input into the heat exchange box 6 through the air supply pipe 5, and the air is heated through the smoke outlet pipe 3 in the heat exchange box 6, and finally the heated air is input into the interior of the refining furnace through the air inlet pipe 7.

[0021] Specifically, a fixing seat 8 is fixedly connected to one side of the heat exchange box 6 , and the negative pressure fan 4 is arranged on the top of the fixing seat 8 .

[0022] It should be noted that the fixed seat 8 is located at the bottom of the negative pressure fan 4 , and the negative pressure fan 4 is fixedly connected to the top of the fixed seat 8 by bolts, so that the negative pressure fan 4 is supported by the fixed seat 8 .

[0023] Specifically, the outer steel cylinder 1 is interspersed with a heat storage brick layer 9 , and the heat storage brick layer 9 is interspersed with a refractory brick layer 10 .

[0024] It should be noted that the refining furnace composed of the outer steel cylinder 1, the heat storage brick layer 9 and the refractory brick layer 10, the refractory brick layer 10 is made of alumina. The function of the refractory brick layer 10 is to withstand high temperature and protect the furnace structure from damage, extend the service life of the refining furnace, and ensure its stable operation; the heat storage brick layer 9 is alumina ceramic brick, which is used to absorb and store heat energy in the furnace, thereby increasing the heat capacity of the entire furnace body. The heat storage brick layer 9 can buffer temperature fluctuations and keep the internal temperature of the furnace body relatively stable.

[0025] Specifically, an oxygen content detection instrument 11 is inserted and connected to the other side of the outer steel cylinder 1 . A fixing flange 16 is sleeved on the middle part of the oxygen content detection instrument 11 . The fixing flange 16 is fixedly connected to the other side of the outer steel cylinder 1 .

[0026] It should be noted that the oxygen content detection instrument 11 is a heating furnace oxygen analyzer with model RWZ0-5. When installing the oxygen content detection instrument 11, its end is inserted into the interior of the refining furnace, and then the position of the oxygen content detection instrument 11 is fixed by fixing the flange 16 and bolts, so as to realize the oxygen content detection instrument 11 to check the oxygen content of the gas in the refining furnace.

[0027] Specifically, a feed port 12 is provided at the top of the outer steel cylinder 1 , and a sealing cover 13 for closing the feed port 12 is sleeved on the top of the feed port 12 .

[0028] It should be noted that the feed port 12 is used to put materials into the refining furnace. After the materials are put into the refining furnace, the feed port 12 is closed by the sealing cover 13, thereby sealing the feed port 12 to prevent smoke from being directly discharged from the refining furnace through the feed port 12 during use.

[0029] Specifically, a discharge pipe 14 for discharging materials is disposed on the other side of the outer steel cylinder 1 , and a control valve 15 is disposed in the middle of the discharge pipe 14 .

[0030] It should be noted that the discharge pipe 14 is used to discharge the material from the refining furnace. A connecting flange is provided at one end of the discharge pipe 14 for connecting with the pipeline when in use. The control valve 15 provided in the middle of the discharge pipe 14 is used to control the flow of the material in the discharge pipe 14. When the material needs to be discharged from the refining furnace, the control valve 15 is opened to allow the material to be discharged from the refining furnace through the discharge pipe 14.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A closed environmentally friendly and energy-saving refining furnace, comprising an outer steel cylinder (1), a low-nitrogen burner (2) being arranged on one side of the outer steel cylinder (1), characterized in that: A smoke outlet pipe (3) is arranged on one side of the outer steel cylinder (1), and an air supply assembly is arranged on the top of the outer steel cylinder (1), the air supply assembly comprises a heat exchange box (6) fixedly connected to one side of the outer steel cylinder (1), and the two ends of the smoke outlet pipe (3) are respectively inserted and connected to the inner walls of the top and bottom ends of the heat exchange box (6), and a negative pressure fan (4) is arranged on one side of the heat exchange box (6), and an air supply pipe (5) is arranged on one side of the negative pressure fan (4), and the air supply pipe (5) is inserted and connected to the top of the smoke outlet pipe (3), and an air intake pipe (7) is inserted and connected to the bottom of the heat exchange box (6), and the air intake pipe (7) is inserted and connected to one side of the outer steel cylinder (1).

2. A closed, environmentally friendly and energy-saving refining furnace according to claim 1, characterized in that: A fixing seat (8) is fixedly connected to one side of the heat exchange box (6), and the negative pressure fan (4) is arranged on the top of the fixing seat (8).

3. A closed, environmentally friendly and energy-saving refining furnace according to claim 1, characterized in that: A heat storage brick layer (9) is inserted and connected inside the outer steel cylinder (1), and a refractory brick layer (10) is inserted and connected inside the heat storage brick layer (9).

4. A closed, environmentally friendly and energy-saving refining furnace according to claim 1, characterized in that: An oxygen content detection instrument (11) is inserted and connected to the other side of the outer steel cylinder (1), and a fixing flange (16) is sleeved in the middle of the oxygen content detection instrument (11), and the fixing flange (16) is fixedly connected to the other side of the outer steel cylinder (1).

5. The closed, environmentally friendly and energy-saving refining furnace according to claim 1 is characterized in that: A feed port (12) is provided at the top of the outer steel cylinder (1), and a sealing cover (13) for closing the feed port (12) is sleeved on the top of the feed port (12).

6. A closed, environmentally friendly and energy-saving refining furnace according to claim 1, characterized in that: A discharge pipe (14) for discharging materials is arranged on the other side of the outer steel cylinder (1), and a control valve (15) is arranged in the middle of the discharge pipe (14).

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