Air temperature increasing device for blast furnace combustion

Abstract

The utility model relates to the related technical field of smelting equipment, in particular to an air temperature increasing device for blast furnace combustion, which comprises a furnace body, one side of the outer wall of the furnace body is communicated with a first exhaust pipe, and one end of the first exhaust pipe is communicated with a treatment box; according to the utility model, through the arrangement of the circulating pipe, the heating box and the sealing plate, part of high-temperature waste gas generated by the blast furnace is circularly introduced into the heating box by the circulating pipe, is mixed with hot air introduced into the heating box, and is introduced into the furnace body along the mixing pipe, and the circulation is repeated, so that the high-temperature waste gas generated by the blast furnace can be circularly utilized; the high-temperature waste gas and the introduced hot air are mixed to increase the air temperature, so that the coke combustion efficiency in the blast furnace is improved, the coke consumption is reduced, and the smelting cost is reduced; meanwhile, the motor works to drive the lead screw to rotate, then the connecting block drives the sealing plate to move left and right, the air inflow proportion of the circulating pipe and the air inlet pipe is adjusted through the sealing plate, and energy conservation and consumption reduction are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to smelting equipment related technical field especially, it is a kind of blast furnace combustion wind temperature increasing device. BACKGROUND

[0002] Smelting is a refining technology, refers to the roasting, smelting, electrolysis and using chemical reagent etc. Method is extracted from metal in ore, reduces the impurity contained in metal or increases certain component in metal, and is smelted into the metal required, in industry, usually adopts high furnace to smelt metal.

[0003] High furnace is smelting equipment, it is with steel plate as furnace shell, and the shell is inlaid with refractory brick lining. High furnace body is divided into furnace throat, furnace body, furnace waist, furnace belly, furnace cylinder five parts from top to bottom, high furnace ironmaking technical and economic index is good, process is simple, production capacity is large, labor production efficiency is high, and has the advantages such as low energy consumption.

[0004] In real life, high furnace is usually in smelting engineering, hot air is introduced into high furnace to assist coke combustion, but since most of existing high furnaces are not provided with wind temperature increasing mechanism, the coke combustion efficiency in high furnace is general, and coke consumption is large, thereby smelting cost is increased, so a blast furnace combustion wind temperature increasing device is required. UTILITY MODEL CONTENT

[0005] The utility model is aimed at providing a blast furnace combustion wind temperature increasing device to solve the problems in the above background technology.

[0006] The utility model adopts the technical scheme that:

[0007] A blast furnace combustion wind temperature increasing device, comprising:

[0008] Furnace body, one side of the furnace body outer wall is connected with a first exhaust pipe, one end of the first exhaust pipe is connected with a treatment box;

[0009] Temperature increasing assembly, the temperature increasing assembly comprises:

[0010] Circulating pipe, one end of the circulating pipe is connected to the back of the treatment box;

[0011] Temperature increasing box, one end of the temperature increasing box is connected with the outer wall of the circulating pipe, the inside of the temperature increasing box is provided with an adjusting assembly, and the adjusting assembly comprises:

[0012] Motor, one end of the motor is fixedly arranged on the front of the temperature increasing box;

[0013] Lead screw, one end of the lead screw is fixedly arranged on the output end of the motor;

[0014] Connecting block, the inner wall of the connecting block is threadedly arranged on the outer wall of the lead screw;

[0015] The bottom end of the sealing plate is fixedly arranged at the top end of the connecting block.

[0016] The outer wall of the air inlet pipe is arranged through the other end of the heating box on one side.

[0017] The outer wall of the air inlet pipe is arranged through the other end of the heating box on one side.

[0018] Optionally, the adjusting assembly further comprises:

[0019] The other side of the fixed frame is located in the same vertical plane with the one end of the circulating pipe and the air inlet pipe.

[0020] Optionally, the top end of the sealing plate is also fixedly arranged with a connecting block, one side of the connecting block is fixedly arranged with a sliding block, and the outer wall of the sliding block is in sliding connection with the other side of the fixed frame.

[0021] Optionally, the outer wall of the screw rod penetrates the front side of the heating box, and the other end of the screw rod is in bearing connection with the inner side wall of the heating box.

[0022] Optionally, one side of the processing box is in communication with a second air exhaust pipe.

[0023] Optionally, the outer wall of the furnace body is fixedly arranged with a connecting sleeve ring, both sides of the outer wall of the connecting sleeve ring are fixedly arranged with supporting seats, and the top ends of the two supporting seats are fixedly connected with the bottom ends of the processing box and the heating box respectively.

[0024] Optionally, the filtering assembly further comprises:

[0025] The bottom end of the elastic block is fixedly arranged at the top end of the processing box.

[0026] The inner top end of the connecting plate is clampedly arranged at the outer wall of the elastic block.

[0027] The one side of the connecting frame is fixedly arranged at one side of the inner wall of the connecting plate.

[0028] The outer wall of the filtering plate is in sliding arrangement at the inner wall of the connecting frame, and one side of the filtering plate is located in the same vertical plane with the other side of the connecting frame.

[0029] Optionally, the inner wall of the connecting frame is fixedly arranged with a sealing frame outside the connecting frame, and the outer wall of the sealing frame is in clamping connection with the front side of the processing box.

[0030] Compared with the prior art, the beneficial effects of the present application are:

[0031] Through being equipped with circulating pipe, temperature raising box and sealing plate, circulating pipe circulates part of high temperature waste gas generated by blast furnace into temperature raising box, mixes with hot air entering temperature raising box, and enters furnace body along mixing pipe, so as to circulate repeatedly, so that high temperature waste gas generated by blast furnace can be recycled, wind temperature can be improved by mixing high temperature waste gas with entering hot air, so that coke combustion efficiency in blast furnace can be improved, coke consumption can be reduced, and smelting cost can be reduced; meanwhile, motor works to drive screw rod to move left and right, and to drive sealing plate to move left and right through connecting block, so that the air intake amount proportion of circulating pipe and air inlet pipe can be adjusted through sealing plate, and energy saving and consumption reduction can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description only constitute some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort.

[0033] Figure 1 It is a schematic diagram of the overall structure in the present application;

[0034] Figure 2 It is a schematic diagram of the connection structure between the temperature raising assembly and the treatment box in the present application;

[0035] Figure 3 It is a sectional view of the internal connection structure of the temperature raising box in the present application;

[0036] Figure 4 It is a schematic diagram of the filter assembly structure in the present application.

[0037] Reference signs:

[0038] 1, furnace body;

[0039] 2, first exhaust pipe;

[0040] 3, treatment box;

[0041] 4, temperature raising assembly; 41, circulating pipe; 42, temperature raising box; 43, air inlet pipe; 44, mixing pipe; 45, adjusting assembly; 451, motor; 452, screw rod; 453, connecting block; 454, sealing plate; 455, sliding block; 456, fixed frame;

[0042] 5, filter assembly; 51, elastic block; 52, connecting plate; 53, connecting frame; 54, filter plate; 55, sealing frame;

[0043] 6, second exhaust pipe;

[0044] 7, connecting sleeve ring;

[0045] 8, support seat; DETAILED DESCRIPTION

[0046] In the description of the utility model, it needs to understand that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that the utility model product is usually placed in use, or the orientation or positional relationship that the person skilled in the art usually understands, and it is only for the convenience of describing the utility model and simplifying the description, and therefore it cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, and therefore it cannot be understood as a limitation on the utility model.

[0047] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can be explicitly or implicitly included one or more features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0048] In view of the prior art, in the smelting process of the blast furnace, hot air is usually introduced into the blast furnace to assist the combustion of coke, but since most of the existing blast furnaces do not have a wind temperature increasing mechanism, the coke combustion efficiency in the blast furnace is generally low, and the coke consumption is large, thereby increasing the smelting cost.

[0049] As shown in Figures 1-4 The utility model embodiment provides a blast furnace combustion wind temperature increasing device, which comprises:

[0050] The furnace body 1 is provided with a first exhaust pipe 2 on one side of the outer wall of the furnace body 1, and the one end of the first exhaust pipe 2 is provided with a treatment box 3;

[0051] The furnace body 1 is mainly used for smelting, and the first exhaust pipe 2 is used for discharging waste gas in the furnace body 1 outward;

[0052] The temperature increasing assembly 4 comprises:

[0053] The circulating pipe 41 is provided on the back of the treatment box 3 at one end;

[0054] The temperature increasing box 42 is connected with the outer wall of the circulating pipe 41 at one end on one side, and the inside of the temperature increasing box 42 is provided with an adjusting assembly 45, and the adjusting assembly 45 comprises:

[0055] The motor 451 is fixedly arranged at one end of the front side of the temperature raising box 42.

[0056] The screw rod 452 is fixedly arranged at the output end of the motor 451.

[0057] The inner wall of the connecting block 453 is threadedly arranged on the outer wall of the screw rod 452.

[0058] The bottom end of the sealing plate 454 is fixedly arranged at the top end of the connecting block 453.

[0059] The outer wall of the air inlet pipe 43 is arranged through the other end of the side of the temperature raising box 42.

[0060] The air inlet pipe 43 is used for introducing hot air into the temperature raising box 42.

[0061] One end of the mixing pipe 44 is in communication with the other side of the temperature raising box 42, and the other end of the mixing pipe 44 is in communication with the other side of the outer wall of the furnace body 1.

[0062] The mixing pipe 44 is mainly used for introducing the mixed hot air in the temperature raising box 42 into the furnace body 1.

[0063] The motor 451 is mainly used for providing driving force required for the left-right movement of the sealing plate 454, and the temperature raising box 42 is used for mixing the high-temperature exhaust gas of the circulating pipe 41 and the hot air in the air inlet pipe 43, so as to improve the air temperature of the hot air.

[0064] Further, the adjusting assembly 45 further comprises:

[0065] The fixed frame 456 is fixedly arranged at one side of the inner wall of the temperature raising box 42, and the other side of the fixed frame 456 is located in the same vertical plane as one end of the circulating pipe 41 and the air inlet pipe 43.

[0066] The other side of the fixed frame 456 is attached to one side of the sealing plate 454, and the air intake proportion of the circulating pipe 41 and the air inlet pipe 43 is adjusted through the sealing plate 454.

[0067] Further, the top end of the sealing plate 454 is also fixedly provided with the connecting block 453, one side of the connecting block 453 is fixedly provided with the sliding block 455, and the outer wall of the sliding block 455 is in sliding connection with the other side of the fixed frame 456.

[0068] The sliding block 455 is in the shape of T, and the sliding block 455 can limit the movement of the sealing plate 454, so that the sealing plate 454 moves horizontally along the direction of the screw rod 452.

[0069] Further, the outer wall of the screw rod 452 penetrates through the front side of the temperature raising box 42, and the other end of the screw rod 452 is in bearing connection with the inner side wall of the temperature raising box 42.

[0070] The outer wall of the screw rod 452 is connected with the front bearing of the heating box 42, and the screw rod 452 is supported to rotate by the inner side wall of the heating box 42;

[0071] Further, the second exhaust pipe 6 is arranged on one side of the treatment box 3 in communication;

[0072] The second exhaust pipe 6 can discharge the treated exhaust gas in the treatment box 3, and the control valve is arranged on the second exhaust pipe 6 to control the opening and closing of the second exhaust pipe 6;

[0073] Further, the connecting sleeve ring 7 is fixedly arranged on the outer wall of the furnace body 1, and the support seat 8 is fixedly arranged on both sides of the outer wall of the connecting sleeve ring 7, and the top end of each support seat 8 is fixedly connected with the bottom end of the treatment box 3 and the heating box 42 respectively;

[0074] The support seat 8 can support and fix the treatment box 3 and the heating box 42, thereby improving the overall stability of the two.

[0075] Working principle, hot air is introduced into the heating box 42 through the air inlet pipe 43, and the hot air is introduced into the furnace body 1 through the mixing pipe 44, the high-temperature exhaust gas generated after the combustion of the furnace body 1 is introduced into the treatment box 3 through the first exhaust pipe 2, part of the high-temperature exhaust gas in the treatment box 3 is discharged outward through the second exhaust pipe 6, and the other part of the high-temperature exhaust gas in the treatment box 3 is introduced into the heating box 42 through the circulation pipe 41, then the motor 451 is opened, the motor 451 works to drive the connecting block 453 to move through the screw rod 452, the connecting block 453 drives the sealing plate 454 to move left and right, thereby adjusting the gas flow ratio introduced into the circulation pipe 41 and the air inlet pipe 43 respectively, when the high-temperature exhaust gas in the circulation pipe 41 is introduced into the heating box 42, it is mixed with the introduced hot air, and then introduced into the furnace body 1 through the mixing pipe 44, so as to be circulated in this way, the high-temperature exhaust gas generated by the blast furnace can be recycled, the wind temperature can be improved by mixing the high-temperature exhaust gas with the introduced hot air, the coke combustion efficiency in the blast furnace can be improved, the coke consumption can be reduced, and the smelting cost can be reduced.

[0076] Specifically, as shown in Figures 1-4 Further comprising:

[0077] The filter assembly 5 comprises:

[0078] The elastic block 51 is fixedly arranged at the top end of the treatment box 3;

[0079] The connecting plate 52 is arranged at the outer wall of the elastic block 51 in a clamping manner;

[0080] The connecting plate 52 is in the shape of an inverted L-shaped;

[0081] The connecting frame 53 is fixedly arranged on one side of the inner wall of the connecting plate 52;

[0082] The connecting frame 53 is used for connection and fixation;

[0083] The filter plate 54 is slidably arranged on the inner wall of the connecting frame 53, and one side of the filter plate 54 is located in the same vertical plane as the other side of the connecting frame 53;

[0084] The filter plate 54 is provided with a plurality of through holes, and the inside of the through holes is filled with activated carbon and iron oxide desulfurizer, so that the waste gas generated by the blast furnace combustion can be preliminarily filtered and treated;

[0085] Further, the inner wall of the connecting frame 53 is fixedly provided with a sealing frame 55 outside the connecting frame 53, and the outer wall of the sealing frame 55 is clamped and connected with the front surface of the treatment box 3;

[0086] The sealing frame 55 is in the shape of a mouth, which is mainly used to improve the sealing between the connecting frame 53 and the treatment box 3, so as to avoid leakage of waste gas.

[0087] Working principle, when the waste gas generated by the furnace body 1 passes through the first exhaust pipe 2 into the treatment box 3, it is filtered by the two filter plates 54 in turn, when the filter plate 54 is used for a period of time, the elastic block 51 is pressed downward, and the connecting plate 52 is pulled outward, the connecting plate 52 moves outward to drive the connecting frame 53 to move outward, until it is separated from the treatment box 3, then the new filter plate 54 is pulled out and replaced, which is convenient for disassembling and replacing the filter plate 54, so as to ensure the filtering effect of the filter plate 54.

[0088] Finally, it should be pointed out that: the above only for the preferred embodiments of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical scheme recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A device for increasing the blast temperature in a blast furnace, characterized in that, The utility model relates to a high-temperature treatment furnace, including: The furnace body, one side of the outer wall of the furnace body is connected with a first exhaust pipe, one end of the first exhaust pipe is connected with a treatment box; The temperature rising assembly, the temperature rising assembly includes: Circulation pipe, one end of the circulation pipe is connected with the back of the treatment box; The temperature rising box, one end of the temperature rising box is connected with the outer wall of the circulation pipe, the inside of the temperature rising box is equipped with the adjusting assembly, the adjusting assembly includes: Motor, one end of the motor is fixedly arranged on the front of the temperature rising box; Lead screw, one end of the lead screw is fixedly arranged on the output end of the motor; Connecting block, the inner wall of the connecting block is screwed on the outer wall of the lead screw; Sealing plate, the bottom end of the sealing plate is fixedly arranged on the top end of the connecting block; Air inlet pipe, the outer wall of the air inlet pipe is arranged on the other end of the temperature rising box; Mixing pipe, one end of the mixing pipe is connected with the other side of the temperature rising box, and the other end of the mixing pipe is connected with the other side of the outer wall of the furnace body.

2. The blast furnace combustion air temperature raising device according to claim 1, characterized by The adjusting assembly further includes: Fixed frame, one side of the fixed frame is fixedly arranged on one side of the inner wall of the temperature rising box, and the other side of the fixed frame is located in the same vertical plane with one end of the circulation pipe and the air inlet pipe.

3. The blast furnace combustion air temperature raising device according to claim 1, characterized by The top end of the sealing plate is also fixedly provided with a connecting block, one side of the connecting block is fixedly provided with a sliding block, and the outer wall of the sliding block is in sliding connection with the other side of the fixed frame.

4. The blast furnace combustion air temperature raising device according to claim 1, characterized by The outer wall of the lead screw penetrates the front of the temperature rising box, and the other end of the lead screw is in bearing connection with the inner side wall of the temperature rising box.

5. The blast furnace combustion air temperature raising device according to claim 1, characterized by One side of the treatment box is connected with a second exhaust pipe.

6. The blast furnace combustion air temperature raising device according to claim 1, characterized by The outer wall of the furnace body is fixedly provided with a connecting sleeve ring, both sides of the outer wall of the connecting sleeve ring are fixedly provided with support seats, and the top ends of the two support seats are fixedly connected with the bottom ends of the treatment box and the temperature rising box.

7. The blast furnace combustion air temperature raising device according to claim 1, characterized by Further including a filtering assembly, the filtering assembly includes: Elastic block, the bottom end of the elastic block is fixedly arranged on the top end of the treatment box; Connecting plate, the inner top end of the connecting plate is clamped on the outer wall of the elastic block; Connecting frame, one side of the connecting frame is fixedly arranged on one side of the inner wall of the connecting plate; Filtering plate, the outer wall of the filtering plate is in sliding connection with the inner wall of the connecting frame, and one side of the filtering plate is located in the same vertical plane with the other side of the connecting frame.

8. The blast air temperature raising device for a blast furnace according to claim 7, characterized by The inner wall of the connecting frame is fixedly provided with a sealing frame outside the connecting frame, and the outer wall of the sealing frame is in clamping connection with the front of the treatment box.

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