Waste heat recovery and utilization device for waste gas of cupola furnace

Abstract

The application relates to a waste heat utilization technical field, in particular to a cupola combustion waste gas waste heat recycling device, which comprises a waste heat recycling shell, a cleaning mechanism and a steam driving mechanism. The middle part of the waste heat recycling shell is provided with a partition, a waste gas recycling port is arranged in the left wall of the waste heat recycling shell, a heat exchange shell is arranged between the left wall of the waste heat recycling shell and the partition, a heat insulation shell is arranged in the heat exchange shell, and a heating box is arranged at the upper end of the heat exchange shell. The cupola combustion waste gas waste heat recycling device can recycle the waste heat in the cupola combustion waste gas through a heat conduction element, and convert the waste heat into water body heat energy, cupola air inlet gas conveying kinetic energy and cupola air inlet gas preheating energy. The waste heat recycling use function of the cupola combustion waste gas is diversified, meanwhile, the device can automatically remove the solid particles in the waste gas adhered to the heat conduction part, and the cupola combustion waste gas waste heat recycling rate of the device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waste heat utilization, in particular to a waste heat recovery and utilization device for combustion exhaust gas of a cupola. BACKGROUND

[0002] The cupola is an important equipment for melting cast iron in casting production. After melting cast iron blocks into molten iron, the molten iron is poured into a sand mold and then the mold is opened to obtain a casting after cooling. The cupola is a vertical cylindrical smelting furnace, which is divided into a front furnace and a rear furnace. A large amount of heat energy is contained in the exhaust gas generated during the use of the cupola. Direct emission of the exhaust gas will cause waste of heat energy. Therefore, the waste heat recovery and utilization device is used to utilize the heat energy of the combustion exhaust gas of the cupola. Some waste heat recovery and utilization devices for combustion exhaust gas of the cupola are provided with a water tank inside the device shell. The bottom wall of the water tank is provided with uniformly distributed heat transfer fins. The combustion exhaust gas of the cupola enters the inside of the device shell through a pipeline and transfers heat to the water in the water tank through the heat transfer fins, so as to heat and utilize the water by using the waste heat of the combustion exhaust gas of the cupola. However, the device can only single-heat the water by using the waste heat of the combustion exhaust gas of the cupola, and the effect is single. At the same time, the combustion exhaust gas of the cupola carries a large amount of solid particles. The surface of the heat transfer fin is easily adhered to a large amount of solid particles for a long time, which affects the waste heat recovery and utilization rate of the heat transfer fin for the combustion exhaust gas of the cupola, and is inconvenient to use. SUMMARY

[0003] The technical problem to be solved by the present application is to overcome the defects of the prior art and provide a waste heat recovery and utilization device for combustion exhaust gas of a cupola. The device can recover the waste heat in the combustion exhaust gas of the cupola by using a heat transfer element and convert it into water heat energy, cupola air inlet gas conveying kinetic energy and cupola air inlet gas preheating energy. The waste heat recovery and utilization function of the combustion exhaust gas of the cupola is diversified. At the same time, the device can automatically remove the solid particles in the exhaust gas adhered to the heat transfer part, improve the waste heat recovery and utilization rate of the combustion exhaust gas of the cupola, and is convenient to use. The problems in the background art can be effectively solved.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a waste heat recovery and utilization device for combustion exhaust gas of a cupola, comprising a waste heat recovery shell, a cleaning mechanism and a steam driving mechanism.

[0005] The waste heat recovery shell is provided with a partition plate in the middle, a waste gas recovery port is formed through the left wall of the waste heat recovery shell, a heat exchange shell is arranged between the left wall of the waste heat recovery shell and the partition plate, a heat insulation shell is arranged in the heat exchange shell, a heating box is arranged at the upper end of the heat exchange shell, ceramic heat-conducting sheets are arranged through the top wall of the heat insulation shell, the upper ends of the ceramic heat-conducting sheets pass through the wall of the heat exchange shell and are located in the heating box, an outer cylinder is arranged on the upper surface of the waste heat recovery shell through evenly distributed fixing seats, a blast pipe is arranged in the middle of the outer cylinder, an air outlet pipe is arranged at the rear side of the waste heat recovery shell, the front end of the air outlet pipe is communicated with the outer cylinder, the top wall of the waste heat recovery shell is communicated with the outer cylinder through a connecting pipe at the right end, and a communication groove is formed in the lower end of the partition plate.

[0006] The cleaning mechanism is arranged between the waste heat recovery shell and the heat insulation shell, and is arranged in cooperation with the ceramic heat-conducting sheets.

[0007] The steam driving mechanism is arranged between the heating box and the outer cylinder, and the upper end of the steam driving mechanism is rotatably connected to the inner wall of the blast pipe through a sealing bearing.

[0008] Further, a single-chip microcomputer is arranged on the front surface of the waste heat recovery shell, and the input end of the single-chip microcomputer is electrically connected to an external power supply.

[0009] Further, the cleaning mechanism comprises a sliding seat, rotating shafts, high-temperature-resistant brush barrels, gears, a rack plate, a reciprocating screw rod and a motor, the sliding seat is slidably connected between the two sliding grooves formed on the front and rear sides of the bottom wall of the heat insulation shell, the upper side of the sliding seat is rotatably connected to the rotating shafts through bearings, the outer sides of the rotating shafts are all provided with the high-temperature-resistant brush barrels, the high-temperature-resistant brush barrels are arranged in cooperation with the ceramic heat-conducting sheets, the lower ends of the rotating shafts are all provided with the gears, the rear wall of the heat insulation shell is provided with the rack plate, the rack plate is rotatably connected between adjacent gears and between longitudinally adjacent two gears, the left wall of the waste heat recovery shell is rotatably connected to the reciprocating screw rod through a bearing, the right end of the reciprocating screw rod is threadedly connected to a threaded seat, the lower side of the threaded seat is fixedly connected to the sliding seat, the left side of the waste heat recovery shell is provided with the motor, the input end of the motor is electrically connected to the output end of the single-chip microcomputer, and the output shaft of the motor is fixedly connected to the left end of the reciprocating screw rod.

[0010] Further, the rear wall of the heating tank is provided with a temperature sensor and a liquid level gauge, both of which are electrically connected to the single-chip microcomputer, so as to detect the heating temperature and liquid level of the water in the heating tank.

[0011] Further, the rear wall of the heating tank is provided with a temperature sensor and a liquid level gauge, both of which are electrically connected to the single-chip microcomputer, so as to detect the heating temperature and liquid level of the water in the heating tank.

[0012] Further, the rear wall of the heating tank is provided with a temperature sensor and a liquid level gauge, both of which are electrically connected to the single-chip microcomputer, so as to detect the heating temperature and liquid level of the water in the heating tank.

[0013] Further, the rear wall of the heating tank is provided with a temperature sensor and a liquid level gauge, both of which are electrically connected to the single-chip microcomputer, so as to detect the heating temperature and liquid level of the water in the heating tank.

[0014] Further, the rear wall of the heating tank is provided with a temperature sensor and a liquid level gauge, both of which are electrically connected to the single-chip microcomputer, so as to detect the heating temperature and liquid level of the water in the heating tank.

[0015] Further, the rear wall of the heating tank is provided with a temperature sensor and a liquid level gauge, both of which are electrically connected to the single-chip microcomputer, so as to detect the heating temperature and liquid level of the water in the heating tank.

[0016] Compared with the prior art, the beneficial effects of the present application are as follows:

[0017] 1、The left end of the air supply pipe is connected with the air inlet of the blast furnace through the pipeline, and the blast furnace combustion exhaust gas enters the inside of the heat insulation shell, and the ceramic heat conducting sheet is contacted with the blast furnace combustion exhaust gas, so that the heat carried by the combustion exhaust gas is transferred to the water in the heating box, and the water in the heating box is heated and evaporated to generate steam, and the steam gradually accumulates in the inside of the heating box, and the steam pressure in the inside of the heating box gradually increases, when the steam pressure is greater than the compression force of the spring, the telescopic end of the telescopic column and the spring are retracted, the sealing seat is vertically moved upward, the steam enters the inside of the steam pipe through the gap between the sealing seat and the conical port, and the steam passes through the contraction pipe and enters the inside of the outer cylinder, and the metal heat conducting sheet is contacted with the gas at the air inlet of the blast furnace in the air supply pipe, so that the gas is preheated, which is convenient for the subsequent combustion of the blast furnace gas, and the lower side of the power fan blade is impacted by the steam flow to rotate, the power fan drives the rotation shaft to rotate, the rotation shaft is connected with the driven shaft through the meshing of the bevel gears, so that the driven shaft drives the air supply fan to rotate, the air supply fan rotates to generate negative pressure to drive the gas flow, and the air inlet of the blast furnace is supplied with gas, and the recovery and utilization function is diversified.

[0018] 2、The waste heat recovered blast furnace combustion exhaust gas passes through the communication groove and enters the right end bottom of the waste heat recovery shell, and the blast furnace combustion exhaust gas passes through the activated carbon filter plate, the filter cotton filter plate and the ceramic membrane filter plate from bottom to top, so that the blast furnace combustion exhaust gas is filtered in multiple stages, and the exhaust gas emission cleanliness is improved.

[0019] 3、After the device recovers and utilizes the waste heat of the blast furnace combustion exhaust gas for a period of time, the single-chip microcomputer starts the motor to drive the output shaft to rotate, the reciprocating screw is connected through threads to drive the threaded seat to slide along the sliding groove, the sliding seat drives the high-temperature-resistant brush cylinder to move horizontally between the two adjacent ceramic heat conducting sheets in the longitudinal direction, in this process, the last gear is meshed with the rack plate, so that the last gear is connected through the meshing of the gears to drive the rotation shaft to rotate the high-temperature-resistant brush cylinder axially, so as to clean the solid particles carried by the blast furnace combustion exhaust gas adhered to the side surface of the ceramic heat conducting sheet, thereby improving the heat transfer efficiency of the ceramic heat conducting sheet in the blast furnace combustion exhaust gas waste heat recovery and utilization, the blast furnace combustion exhaust gas waste heat recovery and utilization device can automatically remove the solid particles in the exhaust gas adhered to the heat conducting part, improve the blast furnace combustion exhaust gas waste heat recovery and utilization rate of the device, and is convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a perspective view of the present application;

[0021] Figure 2 is a partial cross-sectional view of Figure 1 ;

[0022] Figure 3 is a perspective view of another view of the present application;

[0023] Figure 4 is a cross-sectional view of the steam pipe of the present application;

[0024] Figure 5 is an enlarged view of reference numeral A in Figure 2 ;

[0025] Figure 6 is an enlarged view of reference numeral B in Figure 2 .

[0026] In the figure: 1 waste heat recovery shell, 2 single-chip microcomputer, 3 waste gas recovery port, 4 heat exchange shell, 5 heat insulation shell, 6 ceramic heat conducting sheet, 7 heating box, 8 cleaning mechanism, 81 sliding seat, 82 rotating shaft, 83 high-temperature-resistant brush barrel, 84 gear, 85 rack plate, 86 reciprocating screw, 87 motor, 9 steam driving mechanism, 91 steam pipe, 92 contraction pipe, 93 cross seat, 94 telescopic column, 95 spring, 96 plugging seat, 97 conical port, 98 self-rotating shaft, 99 power fan blade, 10 partition plate, 11 communication groove, 12 activated carbon filter plate, 13 filter cotton filter plate, 14 ceramic membrane filter plate, 15 handle, 16 fixed seat, 17 outer cylinder, 18 air supply pipe, 19 connecting pipe, 20 metal heat conducting sheet, 21 cross, 22 driven shaft, 23 air supply fan blade, 24 bevel gear, 25 temperature sensor, 26 liquid level meter, 27 water pipe, 28 electromagnetic valve, 29 air outlet pipe. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] Please refer to Figures 1-6 , the present embodiment provides a technical solution: a blast furnace combustion waste gas waste heat recovery and utilization device, comprising a waste heat recovery shell 1, a cleaning mechanism 8 and a steam driving mechanism 9.

[0029] The waste heat recovery shell 1 is provided with a partition plate 10 in the middle, a waste gas recovery port 3 is arranged through the left wall of the waste heat recovery shell 1, a heat exchange shell 4 is arranged between the left wall of the waste heat recovery shell 1 and the partition plate 10, the inside of the heat exchange shell 4 is provided with a heat insulation shell 5, the upper end of the heat exchange shell 4 is provided with a heating box 7, the top wall of the heat insulation shell 5 is provided with uniformly distributed ceramic heat conducting sheets 6, the upper end of the ceramic heat conducting sheets 6 penetrates through the wall of the heat exchange shell 4 and is located in the inside of the heating box 7, the upper surface of the waste heat recovery shell 1 is provided with an outer cylinder 17 through uniformly distributed fixing seats 16, the middle part of the outer cylinder 17 is provided with a air supply pipe 18, the rear side of the waste heat recovery shell 1 is provided with an air outlet pipe 29, the front end of the air outlet pipe 29 is communicated with the outer cylinder 17, the top wall right end of the waste heat recovery shell 1 is communicated with the outer cylinder 17 through a connecting pipe 19, the lower end of the partition plate 10 is provided with a communication groove 11, the front surface of the waste heat recovery shell 1 is provided with a single-chip microcomputer 2, the input end of the single-chip microcomputer 2 is electrically connected with an external power supply, the rear wall of the heating box 7 is respectively provided with a temperature sensor 25 and a liquid level meter 26, the temperature sensor 25 and the liquid level meter 26 are both bidirectionally electrically connected with the single-chip microcomputer 2, the rear wall of the heating box 7 is provided with water pipes 27 at the upper end and the lower end, the rear end of the water pipes 27 penetrates through the rear wall of the waste heat recovery shell 1 and is connected with electromagnetic valves 28 in series, the input end of the electromagnetic valves 28 is electrically connected with the output end of the single-chip microcomputer 2, the right end of the front wall and the rear wall of the waste heat recovery shell 1 is provided with uniformly distributed sliding grooves two, ceramic membrane filter plates 14, filter cotton filter plates 13 and activated carbon filter plates 12 are sequentially and slidably connected between two vertically adjacent sliding grooves two from top to bottom, the right side of the ceramic membrane filter plates 14, the filter cotton filter plates 13 and the activated carbon filter plates 12 is provided with handles 15, when the device is used to recover and utilize the waste gas of the blast furnace, first, the waste gas recovery port 3 of the device is communicated with the blast furnace waste gas discharge part through a pipeline, the left end of the air supply pipe 18 is communicated with the air inlet of the blast furnace through a pipeline, the upper end water pipe 27 is communicated with the external water supply pipe, the lower side water pipe 27 is communicated with the external water pipe, the blast furnace combustion waste gas enters into the inside of the heat insulation shell 5, contacts the blast furnace combustion waste gas through the ceramic heat conducting sheets 6, and the heat carried by the combustion waste gas is transferred to the water in the heating box 7 through heat transfer, so that the blast furnace combustion waste gas preheating is recovered and utilized, the single-chip microcomputer 2 starts the temperature sensor 25 to detect the water temperature in the heating box 7 and transmits the detection result to the single-chip microcomputer 2 in the form of electric signal, the single-chip microcomputer 2 starts the liquid level meter 26 to detect the water height in the heating box 7 and transmits the detection result to the single-chip microcomputer 2, the blast furnace combustion waste gas after waste heat recovery enters into the right end bottom of the waste heat recovery shell 1 through the communication groove 11, the blast furnace combustion waste gas sequentially passes through the activated carbon filter plate 12, the filter cotton filter plate 13 and the ceramic membrane filter plate 14 from bottom to top, so that the blast furnace combustion waste gas is multi-stage filtered, the exhaust gas emission cleanliness is improved, the filter part is conveniently pulled and moved through the handle 15, the filtered blast furnace combustion waste gas enters into the outer cylinder 17 through the connecting pipe 19,And through the metal heat conduction sheet 20 to the gas in the blast furnace air inlet of the air supply pipe 18 inside the combustion preheating, improve the blast furnace combustion waste gas preheating utilization rate, single-chip microcomputer 2 through the control of the electromagnetic valve 28 on the water pipe 27, thereby to the water in the heating box 7 using storage scheduling, to the blast furnace combustion of waste gas multistage filtration purification, at the same time to the waste gas after purification again preheating utilization;

[0030] Cleaning mechanism 8: it is arranged between the waste heat recovery shell 1 and the heat insulation shell 5, the cleaning mechanism 8 is installed with the ceramic heat conduction sheet 6, the cleaning mechanism 8 includes slide 81, rotating shaft 82, high temperature resistant brush barrel 83, gear 84, rack plate 85, reciprocating screw 86 and motor 87, the slide 81 is slidably connected between the two slide grooves on the front and back of the bottom wall of the heat insulation shell 5, the upper side of the slide 81 is rotatably connected with the evenly distributed rotating shaft 82 through the bearing, the outer side of the rotating shaft 82 is provided with the high temperature resistant brush barrel 83, the high temperature resistant brush barrel 83 is installed with the ceramic heat conduction sheet 6, the lower end of the rotating shaft 82 is provided with the gear 84, the rear wall of the heat insulation shell 5 is provided with the rack plate 85, the rack plate 85 is meshed and connected between the adjacent gears 84 and the longitudinally adjacent two gears 84, the left wall of the waste heat recovery shell 1 is rotatably connected with the reciprocating screw 86 through the bearing, the right end of the reciprocating screw 86 is threadedly connected with the threaded seat, the lower side of the threaded seat is fixedly connected with the slide 81, the left side of the waste heat recovery shell 1 is provided with the motor 87, the input end of the motor 87 is electrically connected with the output end of the single-chip microcomputer 2, the output shaft of the motor 87 is fixedly connected with the left end of the reciprocating screw 86, after a period of use of the blast furnace combustion waste heat recovery and utilization device, the single-chip microcomputer 2 starts the motor 87 to drive the reciprocating screw 86 to rotate, the reciprocating screw 86 is connected through the thread to drive the threaded seat to drive the slide 81 to slide horizontally along the slide groove, the slide 81 drives the high temperature resistant brush barrel 83 to move horizontally between the corresponding longitudinally adjacent two ceramic heat conduction sheets 6 through the rotating shaft 82, in this process, the last gear 84 is meshed and connected with the rack plate 85, so that the last gear 84 drives the rotating shaft 82 to rotate axially through the meshing connection between the gears 84, thereby cleaning the solid particles carried by the blast furnace combustion waste gas adhered to the side of the ceramic heat conduction sheet 6, thereby improving the heat transfer efficiency of the ceramic heat conduction sheet 6 in the blast furnace combustion waste heat recovery and utilization, the blast furnace combustion waste heat recovery and utilization device can automatically remove the solid particles in the waste gas adhered to the heat conduction component, improve the blast furnace combustion waste heat recovery and utilization rate of the device, and is convenient to use;

[0031] The steam drive mechanism 9 is arranged between the heating box 7 and the outer cylinder 17, the upper end of the steam drive mechanism 9 is rotatably connected with the inner wall of the air supply pipe 18 through a sealing bearing, and the steam drive mechanism 9 comprises a steam pipe 91, a contraction pipe 92, a cross seat 93, an extension column 94, a spring 95, a blocking seat 96, a tapered port 97, a rotation shaft 98 and a power fan blade 99, the steam pipe 91 is arranged through the right end of the top wall of the heating box 7, the upper end of the steam pipe 91 is provided with the contraction pipe 92, the upper end of the contraction pipe 92 penetrates through the top wall of the waste heat recovery shell 1 and is connected with the outer cylinder 17, the middle part of the steam pipe 91 is provided with the cross seat 93, the inner wall of the steam pipe 91 is provided with the tapered port 97 at the lower end, the lower surface of the cross seat 93 is provided with the blocking seat 96 through the extension column 94 and the spring 95, the spring 95 is movably sleeved with the outer end of the extension column 94, the blocking seat 96 is installed in cooperation with the tapered port 97, the upper surface of the cross seat 93 is rotatably connected with the rotation shaft 98 through a bearing, the middle part of the rotation shaft 98 is located in the inside of the contraction pipe 92 and is provided with the power fan blade 99 which is uniformly distributed, the upper end of the rotation shaft 98 is rotatably connected with the inner wall of the air supply pipe 18 through a sealing bearing, the inner wall of the air supply pipe 18 is provided with a cross 21, the middle part of the cross 21 is rotatably connected with a driven shaft 22 through a bearing, the left end of the driven shaft 22 is provided with a supply fan blade 23, the upper end of the rotation shaft 98 and the right end of the driven shaft 22 are both provided with a bevel gear 24, the bevel gears 24 are meshingly connected, the inner wall of the air supply pipe 18 is provided with the metal heat-conducting sheets 20 which are uniformly distributed, the water body in the heating box 7 is heated and warmed, when the temperature of the water body rises to a certain degree, the water body evaporates to generate steam, the steam gradually accumulates in the inside of the heating box 7, the steam pressure in the inside of the heating box 7 gradually increases, when the steam pressure is greater than the compression elastic force of the spring 95, the extension end of the extension column 94 and the spring 95 contract, the blocking seat 96 vertically moves upward, the steam enters the inside of the steam pipe 91 through the gap between the blocking seat 96 and the tapered port 97, the steam passes through the upper end of the steam pipe 91, is contracted and accumulated, penetrates through the contraction pipe 92 and enters the inside of the outer cylinder 17, passes through the metal heat-conducting sheets 20 and thus preheats the gas at the air inlet of the air supply pipe 18 inside the blast furnace, which is convenient for subsequent combustion and use, at the same time, when the steam passes through the contraction pipe 92, the lower fan blade arc surface of the power fan blade 99 is impacted by the steam flow and thus rotates, the power fan blade 99 drives the rotation shaft 98 to rotate, the rotation shaft 98 drives the driven shaft 22 to rotate through the meshing connection between the bevel gears 24, the supply fan blade 23 is driven to rotate, the supply fan blade 23 rotates to generate negative pressure and thus drives the gas flow, and then the air inlet of the blast furnace is gas delivered, the blast furnace waste heat recovery and utilization device can recover the waste heat in the blast furnace combustion waste gas through the heat-conducting element, and convert the waste heat into water body heat energy, blast furnace air inlet gas delivery kinetic energy and blast furnace air inlet gas preheating energy, and the waste heat recovery and utilization function of the blast furnace combustion waste gas is diversified.

[0032] The working principle of the waste heat recovery device for the blast furnace combustion exhaust gas provided by the application is as follows: when the device is used for waste heat recovery of the blast furnace combustion exhaust gas, first, the waste gas recovery port 3 of the device is communicated with the exhaust gas discharge part of the blast furnace through a pipeline, the left end of the air supply pipe 18 is communicated with the air inlet of the blast furnace through a pipeline, the upper end water pipe 27 is communicated with the water supply pipe outside, the lower end water pipe 27 is communicated with the water pipe outside, the blast furnace combustion exhaust gas enters the inside of the heat insulation shell 5, and the ceramic heat conducting sheet 6 is contacted with the blast furnace combustion exhaust gas, so that the heat carried by the combustion exhaust gas is transferred to the water in the heating box 7, so that the blast furnace combustion exhaust gas preheating is recovered, the single-chip microcomputer 2 starts the temperature sensor 25 to detect the water temperature in the heating box 7 and transmits the detection result to the single-chip microcomputer 2 in the form of an electric signal, the single-chip microcomputer 2 starts the liquid level meter 26 to detect the water height in the heating box 7 and transmits the detection result to the single-chip microcomputer 2, the water in the heating box 7 is heated and warmed, when the water temperature rises to a certain degree, the water evaporates to generate steam, the steam gradually accumulates in the inside of the heating box 7, the steam pressure in the inside of the heating box 7 gradually increases, when the steam pressure is greater than the compression force of the spring 95, the telescopic end of the telescopic column 94 and the spring 95 are contracted, the sealing seat 96 is vertically moved upward, the steam enters the inside of the steam pipe 91 through the gap between the sealing seat 96 and the conical port 97, the steam passes through the contraction pipe 92 and enters the inside of the outer cylinder 17, and the metal heat conducting sheet 20 is contacted with the gas at the air inlet of the blast furnace in the inside of the air supply pipe 18, so that the gas is preheated, which is convenient for subsequent combustion and use, meanwhile, when the steam passes through the contraction pipe 92, the lower blade arc surface of the power fan blade 99 is impacted by the steam flow to rotate, the power fan blade 99 drives the rotation shaft 98 to rotate, the rotation shaft 98 is connected through the meshing between the bevel gears 24 to drive the air supply fan blade 23 to rotate through the driven shaft 22, the air supply fan blade 23 rotates to generate negative pressure to drive the gas flow, and then the gas is transported to the air inlet of the blast furnace, and then the blast furnace combustion exhaust gas after waste heat recovery enters the right end bottom of the waste heat recovery shell 1 through the communication groove 11, and the blast furnace combustion exhaust gas sequentially passes through the activated carbon filter plate 12, the filter cotton filter plate 13 and the ceramic membrane filter plate 14 from bottom to top, so that the blast furnace combustion exhaust gas is filtered in multiple stages, the exhaust gas emission cleanliness is improved, the filter part is pulled and moved through the handle 15, the filtered blast furnace combustion exhaust gas enters the outer cylinder 17 through the connecting pipe 19, and the metal heat conducting sheet 20 preheats the gas at the air inlet of the blast furnace in the inside of the air supply pipe 18, so that the blast furnace combustion exhaust gas preheating utilization rate is improved, after the device recovers the waste heat of the blast furnace combustion exhaust gas for a period of time, the single-chip microcomputer 2 starts the motor 87 to drive the output shaft to rotate the reciprocating screw rod 86, the reciprocating screw rod 86 is connected through threads to drive the threaded seat to slide along the sliding groove one.The slide 81 drives the high-temperature-resistant brush cylinder 83 to move transversely between the corresponding two longitudinally adjacent ceramic heat-conducting sheets 6 through the rotating shaft 82. In this process, the last gear 84 is connected with the gear rack plate 85 in meshing connection, so that the last gear 84 is connected in meshing connection between the gears 84, thereby driving the rotating shaft 82 to rotate the high-temperature-resistant brush cylinder 83 axially, thereby cleaning the solid particles carried in the cupola combustion waste gas adhered to the side surface of the ceramic heat-conducting sheet 6, and further improving the heat transfer efficiency of the cupola combustion waste gas waste heat recovery of the ceramic heat-conducting sheet 6. The single-chip microcomputer 2 controls the electromagnetic valve 28 on the water pipe 27 to schedule the use and storage of the water in the heating box 7.

[0033] The above description is only an embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which is made by using the content of the specification and drawings of the present application, is also included in the patent protection scope of the present application.

Claims

1. A cupola combustion exhaust gas waste heat recovery and utilization device, characterized in that: It includes a waste heat recovery shell (1), a cleaning mechanism (8), and a steam drive mechanism (9); Waste heat recovery shell (1): A partition (10) is provided in the middle of the shell. A waste gas recovery port (3) is provided through the left wall of the waste heat recovery shell (1). A heat exchange shell (4) is provided between the left wall of the waste heat recovery shell (1) and the partition (10). An insulation shell (5) is provided inside the heat exchange shell (4). A heating box (7) is provided at the upper end of the heat exchange shell (4). A uniformly distributed ceramic heat-conducting plate (6) is provided through the top wall of the insulation shell (5). The upper ends of the ceramic heat-conducting plates (6) all pass through the wall of the heat exchange shell (4). The body is located inside the heating box (7). The upper surface of the waste heat recovery shell (1) is provided with an outer cylinder (17) through evenly distributed fixed seats (16). An air supply pipe (18) is provided in the middle of the outer cylinder (17). An air outlet pipe (29) is provided on the rear side of the waste heat recovery shell (1). The front end of the air outlet pipe (29) is connected to the outer cylinder (17). The right end of the top wall of the waste heat recovery shell (1) is connected to the outer cylinder (17) through a connecting pipe (19). A connecting groove (11) is provided at the lower end of the partition plate (10). Cleaning mechanism (8): It is set between the waste heat recovery shell (1) and the heat insulation shell (5). The cleaning mechanism (8) is installed in conjunction with the ceramic heat-conducting plate (6). Steam drive mechanism (9): It is located between the heating box (7) and the outer cylinder (17). The upper end of the steam drive mechanism (9) is rotatably connected to the inner wall of the air supply pipe (18) through a sealed bearing. The steam drive mechanism (9) includes a steam pipe (91), a contraction pipe (92), a cross seat (93), a telescopic column (94), a spring (95), a sealing seat (96), a conical opening (97), a rotating shaft (98), and a power fan blade (99). The steam pipe (91) is installed through the right end of the top wall of the heating box (7). The upper end of the steam pipe (91) is provided with a contraction pipe (92). The upper end of the contraction pipe (92) passes through the top wall of the waste heat recovery shell (1) and connects with the outer cylinder (17). The steam pipe (91) is connected to the air supply pipe (18). A cross seat (93) is provided in the middle of the steam pipe (91). A conical opening (97) is provided at the lower end of the inner wall of the steam pipe (91). A sealing seat (96) is provided on the lower surface of the cross seat (93) through a telescopic column (94) and a spring (95). The spring (95) is movably connected to the outer end of the telescopic column (94). The sealing seat (96) is installed in conjunction with the conical opening (97). A rotating shaft (98) is rotatably connected to the upper surface of the cross seat (93) through a bearing. The middle part of the rotating shaft (98) is located inside the contraction pipe (92) and is provided with evenly distributed power fan blades (99). The upper end of the rotating shaft (98) is rotatably connected to the inner wall of the air supply pipe (18) through a sealed bearing.

2. The cupola combustion exhaust gas waste heat recovery and utilization device according to claim 1, characterized in that: The front surface of the waste heat recovery shell (1) is provided with a microcontroller (2), and the input terminal of the microcontroller (2) is electrically connected to an external power supply.

3. The cupola combustion exhaust gas waste heat recovery and utilization device according to claim 2, characterized in that: The cleaning mechanism (8) includes a slide (81), a rotating shaft (82), a high-temperature resistant brush cylinder (83), a gear (84), a rack plate (85), a reciprocating screw (86), and a motor (87). The slide (81) is slidably connected to the grooves on the front and rear sides of the bottom wall of the heat insulation shell (5). The upper side of the slide (81) is rotatably connected to the evenly distributed rotating shaft (82) through a bearing. The outer side of the rotating shaft (82) is provided with a high-temperature resistant brush cylinder (83). The high-temperature resistant brush cylinder (83) is installed in conjunction with the ceramic heat-conducting plate (6). The lower end of the rotating shaft (82) is provided with a gear (84). The rear wall of the heat insulation shell (5) is provided with a rack plate (85). The rack plate (85) is meshed with the adjacent gear (84) and with the two longitudinally adjacent gears (84). The left wall of the waste heat recovery shell (1) is rotatably connected to a reciprocating screw (86) through a bearing. The right end of the reciprocating screw (86) is threaded with a threaded seat. The lower side of the threaded seat is fixedly connected to the slide (81). The left side of the waste heat recovery shell (1) is provided with a motor (87). The input end of the motor (87) is electrically connected to the output end of the microcontroller (2). The output shaft of the motor (87) is fixedly connected to the left end of the reciprocating screw (86).

4. The cupola combustion exhaust gas waste heat recovery and utilization device according to claim 2, characterized in that: The rear wall of the heating box (7) is equipped with a temperature sensor (25) and a level gauge (26), and both the temperature sensor (25) and the level gauge (26) are bidirectionally electrically connected to the microcontroller (2).

5. The cupola combustion exhaust gas waste heat recovery and utilization device according to claim 2, characterized in that: The heating box (7) has water pipes (27) running through both the upper and lower ends of its rear wall. The rear ends of the water pipes (27) pass through the rear wall of the waste heat recovery shell (1) and are connected in series with solenoid valves (28). The input ends of the solenoid valves (28) are electrically connected to the output ends of the microcontroller (2).

6. The cupola combustion exhaust gas waste heat recovery and utilization device according to claim 1, characterized in that: The inner wall of the air supply pipe (18) is provided with a cross (21). The middle part of the cross (21) is rotatably connected to a driven shaft (22) through a bearing. The left end of the driven shaft (22) is provided with a fan blade (23). The upper end of the rotating shaft (98) and the right end of the driven shaft (22) are both provided with bevel gears (24), which are meshed together.

7. The cupola combustion exhaust gas waste heat recovery and utilization device according to claim 1, characterized in that: The inner wall of the air supply duct (18) is provided with uniformly distributed metal heat-conducting fins (20).

8. The cupola combustion exhaust gas waste heat recovery and utilization device according to claim 1, characterized in that: The waste heat recovery shell (1) has uniformly distributed sliding grooves on the right side of the front and rear walls. Two longitudinally adjacent sliding grooves are connected in sequence from top to bottom to a ceramic membrane filter plate (14), a filter cotton filter plate (13), and an activated carbon filter plate (12). A handle (15) is provided on the right side of the ceramic membrane filter plate (14), the filter cotton filter plate (13), and the activated carbon filter plate (12).

Images