Waste heat utilization device of sintering machine

Abstract

The invention belongs to the technical field of flue gas waste heat utilization, and discloses a sintering machine waste heat utilization device which comprises a recovery tank, a gas collecting hood fixed in an inner cavity of the recovery tank, a mounting shell communicating with the top of an inner cavity of the gas collecting hood, and filter screens symmetrically arranged on the left side and the right side of an inner cavity of the mounting shell. The heat exchange water pipe is arranged at the lower part of the inner cavity of the recovery tank; and the particle recovery mechanism is arranged below the mounting shell. Through the cooperative design of the mounting shell, the filter screen, the heat exchange water pipe, the particle recovery mechanism and the driving motor, high temperature in large-particle dust can be quickly released, the utilization effect of waste heat of the large-particle dust is improved, the practicability of the equipment is improved, resource waste is avoided, and the economic benefit is increased. And the problems that high temperature in large-particle dust cannot be quickly released for full utilization conveniently, the waste heat recycling effect is easily reduced, resources are wasted, and the practicability of equipment is low are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of flue gas waste heat utilization, and in particular is a sintering machine waste heat utilization device. Background Art

[0002] Sintering machine is suitable for sintering operation in large-scale ferrous metallurgical sintering plants, and is mainly suitable for the sintering treatment of iron ore powder in large and medium-sized sintering plants. It can sinter concentrate powder and rich ore powder of different compositions and particle sizes into blocks, and partially eliminate harmful impurities such as sulfur and phosphorus contained in the ore. Sintering machine is a high-energy-consuming equipment, and a large amount of high-temperature exhaust gas will be generated during its operation. If it is directly treated, it will be difficult and easy to damage the exhaust gas treatment equipment. Therefore, waste heat utilization equipment is often used to recover the heat energy of the exhaust gas for preheating materials, which can save sintering machine fuel and reduce the difficulty of exhaust gas treatment.

[0003] In the prior art, a Chinese patent discloses a high-temperature flue gas waste heat utilization mechanism of a sintering machine (publication number: CN218673182U), the main structure of which includes a dust collector, the bottom end of the dust collector is fixedly connected to a support leg, one side of the dust collector is fixedly connected to a bellows system, one side of the dust collector is fixedly connected to a flue, one end of the flue is fixedly connected to a chimney, the top of the dust collector is fixedly connected to a recovery box, the inner bottom wall of the recovery box is fixedly connected to an exhaust fan, the front of the exhaust fan is fixedly connected to an air guide pipe, and the front of the exhaust fan is fixedly connected to an air outlet pipe; the inner side wall of the recovery box is fixedly connected to a fixed seat, and the inner side wall of the fixed seat is fixedly connected to the inner side wall of the fixed seat. A matching block is movably connected, a reinforcement frame is fixedly connected to one side of the matching block, a filter is fixedly connected to the inner wall of the reinforcement frame, a heating plate is fixedly connected to the inner wall of the recovery box, a temperature sensor is fixedly connected to the inner top wall of the recovery box, a controller is fixedly connected to the front of the recovery box, a sealing door is movably connected to the front of the recovery box, and a conveying pipe is fixedly connected to one side of the recovery box, so that the waste heat utilization mechanism can have a good recycling effect, recover the flue gas heat inside the dust collector, preheat the material on the trolley, and improve the effect and efficiency of material sintering, thereby improving the practicality of the waste heat utilization mechanism to a certain extent.

[0004] In actual use, the above-mentioned patent can make the waste heat utilization mechanism have a good recycling effect by setting up a recovery box, exhaust fan, air outlet pipe, filter, heating plate, temperature sensor, controller and conveying pipe, recover the flue gas heat inside the dust collector, preheat the material on the trolley, and improve the effect and efficiency of material sintering. However, there are still corresponding disadvantages in actual use: high-temperature flue gas will carry dust particles when discharged, and the dust particles also have high temperature. Large particles of dust radiate high temperature from the inside to the outside, and the heat dissipation efficiency is low. When the above-mentioned patent is in use, large particles of dust can be filtered through the filter, but it is not convenient to quickly release the high temperature inside the large particles of dust for full utilization, which can easily reduce the effect of waste heat recovery and utilization, resulting in waste of resources and low practicality of the equipment. Summary of the invention

[0005] Technical issues solved

[0006] In order to solve the problems raised in the above-mentioned background technology, the present invention provides a sintering machine waste heat utilization device, which has the advantages of convenient operation, high waste heat utilization effect and high practicality. Through the coordinated design of the installation shell, filter screen, heat exchange water pipe, particle recovery mechanism, drive motor and other structures, it is convenient to quickly release the high temperature inside the large particles of dust, thereby improving the utilization effect of the waste heat of the large particles of dust, improving the practicality of the equipment, and avoiding the effect of wasting resources.

[0007] Technical Solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sintering machine waste heat utilization device, comprising a recovery tank, an air collecting hood fixed in the inner cavity of the recovery tank, a mounting shell connected to the top of the inner cavity of the air collecting hood, filter screens symmetrically arranged on the left and right sides of the inner cavity of the mounting shell, a heat exchange water pipe arranged at the lower part of the inner cavity of the recovery tank, a particle recovery mechanism arranged below the mounting shell, and a drive motor fixed to the top of the recovery tank for driving the particle recovery mechanism to operate; wherein, an air inlet pipeline is connected to the left side of the lower part of the inner cavity of the recovery tank, and an air outlet pipeline is connected to the right side of the upper part of the inner cavity of the recovery tank;

[0009] The particle recovery mechanism includes a recovery shell arranged below the inner cavity of the installation shell, a group of recovery ports equidistantly arranged on the top surface of the inner cavity of the recovery shell, a sealing plate installed in the recovery port by rotating a shaft, an annular grinding disc arranged in the middle of the inner cavity of the recovery shell, a circular array of feed holes arranged on the top surface of the inner cavity of the annular grinding disc, an air heat exchange annular cavity arranged below the annular grinding disc, an annular air inlet bag arranged below the inner ring of the annular grinding disc, a connecting shell arranged below the annular grinding disc, connecting pieces symmetrically arranged on the left and right sides of the bottom surface of the annular grinding disc for introducing hot air in the air heat exchange annular cavity into the connecting shell, a heat transfer pipe wound around the outer surface of the heat exchange water pipe, an annular block arranged below the recovery shell, a discharge mechanism arranged between the annular grinding disc and the inner ring of the annular air inlet bag for cleaning waste particles, a transmission mechanism arranged on the installation shell, and a linkage mechanism arranged on the upper surface of the recovery shell for driving the sealing plate to open and close;

[0010] The annular grinding disc is made of a material with high heat transfer efficiency, a group of connecting holes connected to the air heat exchange annular cavity are equidistantly arranged on the upper part of the inner cavity of the annular air inlet bag, the top air inlet port of the heat transfer pipe is connected to the inner cavity of the connecting shell through a high temperature resistant hose, the lower part of the connecting shell passes through the bottom of the recovery shell, and the lower part of the outer ring wall of the connecting shell is movably connected to the bottom of the inner cavity of the recovery shell, the outer ring of the annular block is fixedly connected to the inner cavity of the recovery tank through a support rod, the bottom of the connecting shell is provided with an air inlet piece for introducing external air into the annular air inlet bag, the bottom surface of the connecting shell is connected to the annular block through a provided connecting piece, the bottom surface of the connecting shell is movably connected to the upper surface of the annular block, and the edge of the outer upper surface of the recovery shell is movably connected to the side wall of the filter screen.

[0011] In the above technical solution, preferably, the transmission mechanism includes a mounting cavity provided at the upper part of the mounting shell, a transmission rod vertically movably installed on the top surface of the inner cavity of the mounting cavity through a bearing, a transmission block moving up and down on the outer surface of the transmission rod, a guide groove circumferentially provided on the outer surface of the transmission block, a guide block fixed on the left side of the inner cavity of the mounting cavity and adapted to the guide groove, and a connecting rod vertically fixed at the center of the bottom surface of the transmission block;

[0012] Among them, the top end of the transmission rod is fixedly connected to the end face of the output shaft of the driving motor, and the bottom end of the connecting rod penetrates into the inner cavity of the mounting shell and is fixedly connected to the center of the top surface of the recovery shell.

[0013] In the above technical scheme, preferably, the linkage mechanism includes an annular docking block arranged above the center of the upper surface of the recovery shell and a connecting rod for connecting the annular docking block to the sealing plate; wherein, the two ends of the connecting rod are respectively hinged to the upper surface of the sealing plate and the outer ring wall of the annular docking block, the upper surface of the annular docking block is movably connected to the top surface of the inner cavity of the mounting shell, and two first spring push rods are arranged on the left and right sides of the bottom surface of the annular docking block, and the upper and lower ends of the first spring push rod are respectively fixedly connected to the bottom surface of the annular docking block and the upper surface of the recovery shell.

[0014] In the above technical solution, preferably, the connecting member includes two vertical rods symmetrically fixed vertically on the left and right sides of the bottom surface of the connecting shell, the bottom ends of the vertical rods pass through the bottom of the annular block, and the lower movable sleeve of the vertical rod is provided with a first compression spring, and the upper and lower ends of the first compression spring are respectively fixedly connected to the bottom surface of the annular block and the bottom end of the vertical rod.

[0015] In the above technical scheme, preferably, the connecting part includes two docking tubes symmetrically fixed vertically on the left and right sides of the bottom surface of the annular grinding disk, a group of ventilation holes equidistantly arranged in the lower part of the inner cavity of the docking tube, a blocking block slidably sleeved on the outer surface of the docking tube for closing the ventilation holes, two docking holes symmetrically arranged on the left and right sides of the top surface of the inner cavity of the connecting shell, and a docking plate arranged in the inner cavity of the docking hole; wherein, a second compression spring is movably sleeved on the upper part of the outer surface of the docking tube, and the upper and lower ends of the second compression spring are respectively fixedly connected to the bottom surface of the annular grinding disk and the upper surface of the blocking block, a spring seat is vertically fixedly installed on the bottom surface of the inner cavity of the connecting shell, the output end surface of the spring seat is fixedly connected to the bottom surface of the docking plate, and the outer surface of the docking plate is movably connected to the inner cavity of the docking hole.

[0016] In the above technical solution, preferably, the air intake component includes an air intake channel symmetrically opened on the left and right sides of the bottom surface of the connecting shell and connected with the bottom of the inner cavity of the annular air intake bag, a check valve for introducing air into the annular air intake bag is arranged at the upper part of the inner cavity of the air intake channel, and an air intake hose is connected to the lower part of the inner cavity of the air intake channel, and one end of the air intake hose passes through the outside of the inner cavity of the recovery tank.

[0017] In the above technical scheme, preferably, the discharge mechanism includes a discharge airbag arranged in the annular grinding disk and the inner ring of the annular air inlet bag, a group of one-way feed valves equidistantly arranged at the upper part of the inner cavity of the discharge airbag for sucking the granular powder in the inner cavity of the annular grinding disk, a discharge channel opened at the center of the bottom surface of the connecting shell for connecting to the lower part of the inner cavity of the discharge airbag, a one-way discharge valve arranged at the upper part of the inner cavity of the discharge channel for guiding the granular powder in the discharge airbag, a heat-conducting member arranged at the lower part of the inner cavity of the annular grinding disk for transferring the heat of the granular powder, a collection box fixed at the front part of the recovery tank for collecting the granular powder, and a discharge hose arranged on the bottom surface of the connecting shell for connecting the discharge channel with the inner cavity of the collection box; wherein, the top surface of the discharge airbag is fixedly connected to the top surface of the inner cavity of the recovery shell, the middle part of the outer surface of the discharge airbag is fixedly connected to the inner ring of the annular grinding disk, and the bottom surface of the discharge airbag is fixedly connected to the middle part of the upper surface of the connecting shell.

[0018] In the above technical solution, preferably, the heat conductive member comprises a heat conductive ring arranged at the lower part of the inner cavity of the annular air inlet bag and heat conductive rods fixedly installed in the inner cavity of the heat conductive ring at circumferentially equidistant intervals; wherein the heat conductive rods penetrate to the lower part of the inner cavity of the discharge air bag.

[0019] In the above technical solution, preferably, the bottom surface of the sealing plate is highly consistent with the bottom surface of the inner cavity of the recovery shell, and the bottom surface of the sealing plate and the bottom surface of the inner cavity of the recovery shell are respectively provided with grinding textures.

[0020] In the above technical solution, preferably, two second spring push rods are symmetrically and vertically arranged on the left and right sides below the annular grinding disk, the top end of the second spring push rod is fixedly connected to the bottom surface of the annular grinding disk, and the bottom end of the second spring push rod is fixedly connected to the upper surface of the connecting shell.

[0021] Beneficial Effects

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention adopts the coordinated design of the installation shell, the filter screen, the heat exchange water pipe, the particle recovery mechanism, the driving motor and other structures. When the driving motor is in operation, the recovery shell can be driven to reciprocate and rotate up and down through the transmission mechanism. When the recovery shell moves downward, the linkage mechanism can drive the sealing plate to flip and close. After the downward movement of the recovery shell drives the bottom surface of the connecting shell to contact the upper surface of the annular block, as the recovery shell continues to move downward and rotate, the bottom surface of the sealing plate cooperates with the top surface of the inner cavity of the recovery shell and the upper surface of the annular grinding disk, so that the large particles of dust on the upper surface of the annular grinding disk can be ground and crushed, and the crushed particles of dust can be crushed. The dust particles fall through the feed hole and are collected in the inner cavity of the annular grinding disk. The high temperature of the large dust particles after being crushed can be transferred to the air heat exchange ring cavity to heat the air. The recovery shell continues to move downward to squeeze the annular grinding disk and move downward. Through the action of the connecting piece, the heated air in the air heat exchange ring cavity can be transported from the inner cavity of the connecting shell to the heat transfer pipe for ejection. When the high-temperature air moves in the heat transfer pipe, it can transfer the heat to the liquid in the heat exchange water pipe through the heat transfer pipe, which is convenient for quickly releasing the high temperature inside the large dust particles, thereby improving the utilization effect of the waste heat of the large dust particles, improving the practicability of the equipment, and avoiding waste of resources.

[0024] 2. The present invention adopts the coordinated design of structures such as a recovery shell, a connecting piece, an annular grinding disc, and a discharge mechanism. After the large dust particles are ground and crushed into powder, when the recovery shell moves upward again, the connecting piece can enable the connecting shell to drive the annular grinding disc away from the top surface of the inner cavity of the recovery shell, thereby driving the discharge mechanism to collect the powders ground and crushed by the large dust particles. When the recovery shell moves downward again, it can drive the discharge mechanism to discharge the collected crushed powders into a collection box for collection, thereby solving the problem in the prior art that after filtering the large dust particles, it is not convenient to automatically clean and discharge the filtered large dust particles, and the operator needs to stop the operation of the equipment to clean the filtered large dust particles.

[0025] 3. The present invention adopts the coordinated design of the annular air bag, the air intake piece, the second spring push rod and other structures. When the recovery shell moves upward under the action of the connecting piece, the connecting shell drives the annular grinding disk away from the inner cavity top surface of the recovery shell. The thrust of the second spring push rod can move the annular grinding disk upward to stretch the annular air intake bag to generate negative pressure inside it. External air can be sucked in through the air intake piece, which makes it convenient to mix external air into the sintering flue gas in the recovery tank, and can increase the oxygen content in the flue gas.

[0026] 4. The present invention adopts the coordinated design of the discharge airbag, the annular air inlet bag, the heat conductive part and other structures. When the recovery shell moves upward to stretch the discharge airbag so that it inhales the crushed powder, the crushed powder falls into the bottom of the inner cavity of the discharge airbag. The residual heat of the powder can be transferred to the heat conductive ring in the annular air inlet bag through the heat conductive rod to preheat the newly inhaled external air, thereby further improving the utilization rate of the waste heat of large dust particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the present invention;

[0028] Figure 2 It is a partial front cross-sectional structural schematic diagram of the recovery tank, gas collecting hood, mounting shell, filter screen, heat exchange water pipe, and particle recovery mechanism of the present invention;

[0029] Figure 3 It is a partial front cross-sectional structural schematic diagram of the gas collecting hood, the mounting shell, the filter screen, and the particle recovery mechanism of the present invention;

[0030] Figure 4 It is a partial front cross-sectional structural schematic diagram of the recovery shell, the recovery port, the sealing plate, the annular grinding disc, the connecting shell, and the connecting member of the present invention;

[0031] Figure 5 It is a structural schematic diagram of the driving motor, transmission mechanism and linkage mechanism of the present invention;

[0032] Figure 6 It is a structural schematic diagram of the annular grinding disc, annular air inlet bag, connecting piece and connecting shell of the present invention;

[0033] Figure 7 It is a partial front cross-sectional structural schematic diagram of the annular grinding disc, annular air inlet bag, connecting shell, connecting piece, and discharge mechanism of the present invention;

[0034] Figure 8 It is a partial cross-sectional structural schematic diagram of the connecting piece of the present invention;

[0035] Fig. 9 It is a partial front cross-sectional structural schematic diagram of the connecting shell, discharge channel, discharge hose, heat transfer pipe, and heat exchange water pipe of the present invention.

[0036] In the figure: 1, recovery tank; 2, air collecting hood; 3, installation shell; 4, filter screen; 5, heat exchange water pipe; 6, particle recovery mechanism; 61, recovery shell; 62, recovery port; 63, sealing plate; 64, annular grinding disc; 65, feed hole; 66, air heat exchange ring cavity; 67, annular air inlet bag; 68, connecting shell; 69, heat transfer pipe; 610, annular block; 611, connecting hole; 7, connecting piece; 71, butt pipe; 72, vent hole; 73, barrier block; 74, butt hole ;75. docking plate;8. discharge mechanism;81. discharge airbag;82. one-way feed valve;83. discharge channel;84. one-way discharge valve;85. collection box;86. discharge hose;9. drive motor;10. transmission mechanism;101. transmission rod;102. transmission block;103. guide groove;104. guide block;105. connecting rod;11. linkage mechanism;111. annular docking block;112. connecting rod;12. air inlet;13. connecting piece;14. heat conducting piece. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] like Figures 1 to 9 As shown, the present invention provides a sintering machine waste heat utilization device, including a recovery tank 1, an air collecting hood 2 fixed in the inner cavity of the recovery tank 1, a mounting shell 3 connected to the top of the inner cavity of the air collecting hood 2, filter screens 4 symmetrically arranged on the left and right sides of the inner cavity of the mounting shell 3, a heat exchange water pipe 5 arranged at the lower part of the inner cavity of the recovery tank 1, a particle recovery mechanism 6 arranged below the mounting shell 3, and a driving motor 9 fixed to the top of the recovery tank 1 for driving the particle recovery mechanism 6 to operate; wherein, the left side of the lower part of the inner cavity of the recovery tank 1 is connected to an air inlet pipeline, and the right side of the upper part of the inner cavity of the recovery tank 1 is connected to an air outlet pipeline;

[0039] When in use, the sintering flue gas is input into the recovery tank 1 through the air intake pipe by the external conveying equipment. The flue gas moves upward in the recovery tank 1 and enters the inner cavity of the mounting shell 3 through the gas collecting hood 2. Under the action of the filter screen 4, the large particles of dust carried in the flue gas are filtered. The particle recovery mechanism 6 is driven by the driving motor 9 to recover the large particles of dust for waste heat utilization. The filtered flue gas is discharged through the air outlet pipe and transported to the material for preheating through the external conveying equipment.

[0040] The particle recovery mechanism 6 includes a recovery shell 61 disposed below the inner cavity of the mounting shell 3, a group of recovery ports 62 equidistantly provided on the top surface of the inner cavity of the recovery shell 61, a sealing plate 63 installed in the recovery port 62 by rotating the shaft, an annular grinding disc 64 disposed in the middle of the inner cavity of the recovery shell 61, a circular array of feed holes 65 provided on the top surface of the inner cavity of the annular grinding disc 64, an air heat exchange annular cavity 66 provided at the bottom of the annular grinding disc 64, an annular air inlet bag 67 provided at the bottom of the inner circle of the annular grinding disc 64, and a sealing plate 63 provided at the bottom of the annular grinding disc 64. a square connecting shell 68, a connecting piece 7 symmetrically arranged on the left and right sides of the bottom surface of the annular grinding disc 64 for introducing the hot air in the air heat exchange ring cavity 66 into the connecting shell 68, a heat transfer pipe 69 wound around the outer surface of the heat exchange water pipe 5, an annular block 610 arranged below the recovery shell 61, a discharge mechanism 8 arranged in the inner circle of the annular grinding disc 64 and the annular air inlet bag 67 for cleaning the waste particles, a transmission mechanism 10 arranged on the mounting shell 3, and a linkage mechanism 11 arranged on the upper surface of the recovery shell 61 for driving the sealing plate 63 to open and close;

[0041] The annular grinding disc 64 is made of a material with high heat transfer efficiency. A group of connecting holes 611 communicating with the air heat exchange annular cavity 66 are equidistantly arranged on the upper part of the inner cavity of the annular air inlet bag 67. The top air inlet port of the heat transfer pipe 69 is communicated with the inner cavity of the connecting shell 68 through a high temperature resistant hose. The lower part of the connecting shell 68 penetrates to the bottom of the recovery shell 61, and the lower part of the outer ring wall of the connecting shell 68 is movably connected with the bottom of the inner cavity of the recovery shell 61. The outer ring of the annular block 610 is fixedly connected with the inner cavity of the recovery tank 1 through a support rod. The bottom of the connecting shell 68 is provided with an air inlet member 12 for introducing external air into the annular air inlet bag 67. The air inlet member 12 includes air inlet channels symmetrically arranged on the left and right sides of the bottom surface of the connecting shell 68 and communicating with the bottom of the inner cavity of the annular air inlet bag 67. A check valve for introducing air into the annular air inlet bag 67 is provided on the upper part of the inner cavity of the air inlet channel. The lower part of the inner cavity of the air inlet channel is communicated with an air inlet hose. One end of the air inlet hose penetrates to the outside of the inner cavity of the recovery tank 1. The bottom surface of the connecting shell 68 is connected to the annular block 610 through the provided connecting piece 13, and the connecting piece 13 includes two vertical rods symmetrically fixed vertically on the left and right sides of the bottom surface of the connecting shell 68, and the bottom ends of the vertical rods penetrate to the bottom of the annular block 610, and the lower movable sleeve of the vertical rod is provided with a first compression spring, and the upper and lower ends of the first compression spring are respectively fixedly connected to the bottom surface of the annular block 610 and the bottom end of the vertical rod, the bottom surface of the connecting shell 68 is movably connected to the upper surface of the annular block 610, and the edge of the outer upper surface of the recovery shell 61 is movably connected to the side wall of the filter screen 4, the bottom surface of the sealing plate 63 and the bottom surface of the inner cavity of the recovery shell 61 are respectively provided with grinding textures, and two second spring push rods are symmetrically vertically provided on the left and right sides below the annular grinding disk 64, the top end of the second spring push rod is fixedly connected to the bottom surface of the annular grinding disk 64, and the bottom end of the second spring push rod is fixedly connected to the upper surface of the connecting shell 68.

[0042] When in use, when the driving motor 9 is in operation, the recovery shell 61 can be driven to reciprocate and rotate up and down through the transmission mechanism 10. When the recovery shell 61 moves upward, the large dust particles filtered on the filter screen 4 can be scraped off, so that the large dust particles fall on the upper surface of the recovery shell 61. Through the interaction between the linkage mechanism 11 and the top surface of the inner cavity of the mounting shell 3, the sealing plate 63 can be driven to flip open, so that the large dust particles fall onto the upper surface of the annular grinding disk 64. Then, when the recovery shell 61 moves downward, the linkage mechanism 11 can drive the sealing plate 63 to flip and close. After the downward movement of the recovery shell 61 drives the bottom surface of the connecting shell 68 to contact the upper surface of the annular block 610, as the recovery shell 61 continues to move downward and rotate, the bottom surface of the sealing plate 63 contacts the top surface of the inner cavity of the recovery shell 61 and the upper surface of the annular grinding disk 64. Under the cooperation, the large particles of dust on the upper surface of the annular grinding disk 64 can be ground and crushed, and the crushed particles of dust fall into the inner cavity of the annular grinding disk 64 through the feed hole 65 for collection. The high temperature of the heat dissipated after the large particles of dust are crushed can be transferred to the air heat exchange ring cavity 66 to heat the air. After the recovery shell 61 continues to move downward to squeeze the annular grinding disk 64 to move downward, through the action of the connecting piece 7, the heated air in the air heat exchange ring cavity 66 can be transported from the inner cavity of the connecting shell 68 to the heat transfer pipe 69 for spraying. When the high-temperature air moves in the heat transfer pipe 69, it can transfer the heat to the liquid in the heat exchange water pipe 5 through the heat transfer pipe 69, so as to quickly release the high temperature inside the large particles of dust, thereby improving the utilization effect of the waste heat of the large particles of dust, improving the practicability of the equipment, and avoiding waste of resources.

[0043] It should be noted that after the large particles of dust are ground and crushed into powder, when the recovery shell 61 moves upward again, under the action of the connecting piece 13, the connecting shell 68 can drive the annular grinding disk 64 away from the top surface of the inner cavity of the recovery shell 61, thereby driving the discharge mechanism 8 to collect the powder ground from the large particles of dust. When the recovery shell 61 moves downward again, it can drive the discharge mechanism 8 to discharge the collected crushed powder into the collection box 85 for collection, which solves the problem in the prior art that after filtering the large particles of dust, it is not convenient to automatically clean and discharge the filtered large particles of dust, and the operator needs to stop the operation of the equipment to clean the filtered large particles of dust.

[0044] It is worth mentioning that when the recovery shell 61 moves upward under the action of the connecting piece 13, the connecting shell 68 drives the annular grinding disk 64 away from the top surface of the inner cavity of the recovery shell 61, and the thrust of the second spring push rod can make the annular grinding disk 64 move upward to stretch the annular air inlet bag 67 to generate negative pressure inside it, and the outside air can be sucked in through the air inlet piece 12, so that the outside air is mixed into the sintering flue gas in the recovery tank 1, which can increase the oxygen content in the flue gas.

[0045] like Figure 5 As shown, the transmission mechanism 10 includes a mounting cavity provided at the upper portion of the mounting shell 3, a transmission rod 101 vertically movably installed on the top surface of the inner cavity of the mounting cavity through a bearing, a transmission block 102 moving up and down on the outer surface of the transmission rod 101, a guide groove 103 circumferentially provided on the outer surface of the transmission block 102, a guide block 104 fixed on the left side of the inner cavity of the mounting cavity and adapted to the guide groove 103, and a connecting rod 105 vertically fixed at the center of the bottom surface of the transmission block 102;

[0046] Among them, the top end of the transmission rod 101 is fixedly connected to the end face of the output shaft of the driving motor 9, and the bottom end of the connecting rod 105 penetrates into the inner cavity of the mounting shell 3 and is fixedly connected to the center of the top surface of the recovery shell 61.

[0047] When in use, the driving motor 9 drives the transmission rod 101 to rotate, and the transmission rod 101 drives the transmission block 102 to rotate. Under the interaction of the guide groove 103 and the guide block 104, the transmission block 102 can move up and down reciprocatingly while rotating, so that the transmission block 102 can drive the recovery shell 61 to rotate and move up and down reciprocatingly through the connecting rod 105.

[0048] like Figure 4 and Figure 5 As shown, the linkage mechanism 11 includes an annular docking block 111 arranged above the center of the upper surface of the recovery shell 61 and a connecting rod 112 for connecting the annular docking block 111 to the sealing plate 63; wherein, the two ends of the connecting rod 112 are respectively hinged to the upper surface of the sealing plate 63 and the outer ring wall of the annular docking block 111, the upper surface of the annular docking block 111 is movably connected to the top surface of the inner cavity of the mounting shell 3, and two first spring push rods are arranged on the left and right sides of the bottom surface of the annular docking block 111, and the upper and lower ends of the first spring push rod are respectively fixedly connected to the bottom surface of the annular docking block 111 and the upper surface of the recovery shell 61.

[0049] When in use, the recovery shell 61 moves upward to drive the annular docking block 111 to move upward. When the upper surface of the annular docking block 111 and the top surface of the inner cavity of the mounting shell 3 are squeezed against each other, the annular docking block 111 can drive the sealing plate 63 to flip downward and open through the connecting rod 112. When the upper surface of the annular docking block 111 is separated from the top surface of the inner cavity of the mounting shell 3, the annular docking block 111 can drive the sealing plate 63 to flip upward and close through the connecting rod 112 under the elastic force of the first spring push rod.

[0050] like Figure 7 and Figure 8As shown, the connecting piece 7 includes two docking tubes 71 symmetrically and vertically fixed on the left and right sides of the bottom surface of the annular grinding disk 64, a group of ventilation holes 72 equidistantly arranged in the lower part of the inner cavity of the docking tube 71, a blocking block 73 slidably sleeved on the outer surface of the docking tube 71 for covering the ventilation holes 72, two docking holes 74 symmetrically arranged on the left and right sides of the top surface of the inner cavity of the connecting shell 68, and a docking plate 75 arranged in the inner cavity of the docking hole 74; wherein, a second compression spring is movably sleeved on the upper part of the outer surface of the docking tube 71, and the upper and lower ends of the second compression spring are respectively fixedly connected to the bottom surface of the annular grinding disk 64 and the upper surface of the blocking block 73, a spring seat is vertically fixedly installed on the bottom surface of the inner cavity of the connecting shell 68, the output end surface of the spring seat is fixedly connected to the bottom surface of the docking plate 75, and the outer surface of the docking plate 75 is movably connected to the inner cavity of the docking hole 74.

[0051] When in use, the recovery shell 61 moves downward continuously to squeeze the annular grinding disk 64 downward, and the annular grinding disk 64 can drive the docking tube 71 to be inserted into the docking hole 74. At the same time, the bottom end of the docking tube 71 can push the docking plate 75 to move downward and separate from the inner cavity of the docking hole 74. At the same time, when the docking tube 71 is inserted into the docking hole 74, the inner cavity of the blocking block 73 is separated from the vent hole 72, and then the high-temperature air in the vent hole 72 can flow into the inner cavity of the connecting shell 68.

[0052] like Figure 7 As shown, the discharge mechanism 8 includes a discharge airbag 81 disposed in the inner circle of the annular grinding disc 64 and the annular air inlet bag 67, a group of one-way feed valves 82 equidistantly disposed in the circumferential direction at the upper part of the inner cavity of the discharge airbag 81 for sucking the granular powder in the inner cavity of the annular grinding disc 64, a discharge channel 83 provided at the center of the bottom surface of the connecting shell 68 for connecting to the lower part of the inner cavity of the discharge airbag 81, a one-way discharge valve 84 disposed in the upper part of the inner cavity of the discharge channel 83 for guiding the granular powder in the discharge airbag 81 out, and a discharge valve 86 disposed in the annular grinding disc 64. The lower part of the inner cavity is used for transferring the heat of the granular powder. There is a collecting box 85 fixed at the front of the recovery tank 1 for collecting the granular powder, and a discharge hose 86 arranged on the bottom surface of the connecting shell 68 for connecting the discharge channel 83 with the inner cavity of the collecting box 85; wherein, the top surface of the discharge airbag 81 is fixedly connected to the top surface of the inner cavity of the recovery shell 61, the middle part of the outer surface of the discharge airbag 81 is fixedly connected to the inner ring of the annular grinding disk 64, and the bottom surface of the discharge airbag 81 is fixedly connected to the middle part of the upper surface of the connecting shell 68.

[0053] During use, after the large particles of dust are ground and crushed into powder, when the recovery shell 61 moves upward again, under the action of the connecting piece 13, the connecting shell 68 can drive the annular grinding disk 64 away from the top surface of the inner cavity of the recovery shell 61, so that the discharge airbag 81 can be stretched to generate negative pressure inside it, and the powder ground from the large particles of dust can be sucked into the discharge airbag 81 through the one-way feed valve 82. When the recovery shell 61 moves downward again, the discharge airbag 81 is compressed, and the crushed powder is discharged into the collection box 85 for collection through the one-way discharge valve 84, the discharge channel 83 and the discharge hose 86.

[0054] like Figure 7 As shown, the heat-conducting member 14 includes a heat-conducting ring arranged at the lower part of the inner cavity of the annular air inlet bag 67 and heat-conducting rods fixedly installed in the inner cavity of the heat-conducting ring at circumferentially equidistant intervals; wherein the heat-conducting rods penetrate to the lower part of the inner cavity of the discharge air bag 81.

[0055] During use, when the recovery shell 61 moves upward to stretch the discharge airbag 81 so that it inhales the crushed powder, the crushed powder falls into the bottom of the inner cavity of the discharge airbag 81. The residual heat of the powder can be transferred to the heat-conducting ring in the annular air inlet bag 67 through the heat-conducting rod to preheat the newly inhaled external air, thereby further improving the utilization rate of the waste heat of large particles of dust.

[0056] The working principle and use process of the present invention:

[0057] When in use, the driving motor 9 operates to drive the transmission rod 101 to rotate, and the transmission rod 101 drives the transmission block 102 to rotate. Under the interaction of the guide groove 103 and the guide block 104, the transmission block 102 can move up and down reciprocatingly while rotating, so that the transmission block 102 can drive the recovery shell 61 to rotate and move up and down reciprocatingly through the connecting rod 105. When the recovery shell 61 moves upward, it can scrape off the large particles of dust filtered on the filter screen 4, so that the large particles of dust fall on the upper surface of the recovery shell 61. When the recovery shell 61 moves upward, it drives the annular docking block 111 to move upward. When the upper surface of the annular docking block 111 and the top surface of the inner cavity of the installation shell 3 are squeezed against each other, the annular docking block 111 can be connected through the connecting rod 112 The sealing plate 63 is driven to flip downward and open, so that large particles of dust fall onto the upper surface of the annular grinding disc 64. Subsequently, when the recovery shell 61 moves downward, the upper surface of the annular docking block 111 is separated from the top surface of the inner cavity of the mounting shell 3. Driven by the elastic force of the first spring push rod, the annular docking block 111 can drive the sealing plate 63 to flip upward and close through the connecting rod 112. After the recovery shell 61 moves downward to drive the bottom surface of the connecting shell 68 to contact the upper surface of the annular block 610, as the recovery shell 61 continues to move downward and rotate, the bottom surface of the sealing plate 63 cooperates with the top surface of the inner cavity of the recovery shell 61 and the upper surface of the annular grinding disc 64 to grind and crush the large particles of dust on the upper surface of the annular grinding disc 64. The granular dust falls into the inner cavity of the annular grinding disc 64 through the feed hole 65 and is collected. The high temperature generated by the heat dissipation after the large granular dust is crushed can be transferred to the air heat exchange ring cavity 66 to heat the air. The recovery shell 61 continues to move downward to squeeze the annular grinding disc 64 to move downward. The annular grinding disc 64 can drive the docking tube 71 to insert into the docking hole 74. At the same time, the bottom end of the docking tube 71 can push the docking plate 75 to move downward and separate from the inner cavity of the docking hole 74. At the same time, when the docking tube 71 is inserted into the docking hole 74, the inner cavity of the barrier block 73 is separated from the vent hole 72. Then the high-temperature air in the vent hole 72 can flow into the inner cavity of the connecting shell 68, and the heated air in the air heat exchange ring cavity 66 can be transported from the inner cavity of the connecting shell 68 to the transfer When the heat pipe 69 is ejected and the high-temperature air moves in the heat transfer pipe 69, the heat can be transferred to the liquid in the heat exchange water pipe 5 through the heat transfer pipe 69. After the large dust particles are ground into powder, when the recovery shell 61 moves upward again, the connecting shell 68 can drive the annular grinding disc 64 away from the top surface of the inner cavity of the recovery shell 61 under the action of the connecting piece 13, so that the discharge airbag 81 can be stretched to generate negative pressure inside it, and the powder grinded from the large dust particles can be sucked into the discharge airbag 81 through the one-way feed valve 82. At the same time, the thrust of the second spring push rod can make the annular grinding disc 64 move upward to stretch the annular air inlet bag 67 to generate negative pressure inside it, and the external air can be sucked in through the air inlet piece 12.The heat of the residual powder at the bottom of the inner cavity of the discharge airbag 81 can be transferred to the heat-conducting ring in the annular air inlet bag 67 through the heat-conducting rod to preheat the newly inhaled external air. When the recovery shell 61 moves downward again, the discharge airbag 81 is compressed, and the crushed powder is discharged to the collection box 85 for collection through the one-way discharge valve 84, the discharge channel 83 and the discharge hose 86.

[0058] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0059] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sintering machine waste heat utilization device, characterized in that: The invention comprises a recovery tank (1), an air collecting hood (2) fixed in the inner cavity of the recovery tank (1), a mounting shell (3) connected to the top of the inner cavity of the air collecting hood (2), a filter screen (4) symmetrically arranged on the left and right sides of the inner cavity of the mounting shell (3), a heat exchange water pipe (5) arranged at the lower part of the inner cavity of the recovery tank (1), a particle recovery mechanism (6) arranged below the mounting shell (3), and a drive motor (9) fixed at the top of the recovery tank (1) for driving the particle recovery mechanism (6) to operate; wherein the left side of the lower part of the inner cavity of the recovery tank (1) is connected to an air inlet pipeline, and the right side of the upper part of the inner cavity of the recovery tank (1) is connected to an air outlet pipeline; The particle recovery mechanism (6) comprises a recovery shell (61) arranged below the inner cavity of the mounting shell (3), a group of recovery ports (62) equidistantly arranged on the top surface of the inner cavity of the recovery shell (61), a sealing plate (63) installed in the recovery port (62) by rotating the shaft, an annular grinding disc (64) arranged in the middle of the inner cavity of the recovery shell (61), a circular array of feed holes (65) arranged on the top surface of the inner cavity of the annular grinding disc (64), an air heat exchange annular cavity (66) arranged below the annular grinding disc (64), an annular air inlet bag (67) arranged at the lower part of the inner circle of the annular grinding disc (64), and a sealing plate (63) arranged below the annular grinding disc (64). A connecting shell (68), a connecting piece (7) symmetrically arranged on the left and right sides of the bottom surface of the annular grinding disc (64) for introducing hot air in the air heat exchange ring cavity (66) into the connecting shell (68), a heat transfer pipe (69) wound around the outer surface of the heat exchange water pipe (5), an annular block (610) arranged below the recovery shell (61), a discharge mechanism (8) arranged in the inner circle of the annular grinding disc (64) and the annular air inlet bag (67) for cleaning waste particles, a transmission mechanism (10) arranged on the mounting shell (3), and a linkage mechanism (11) arranged on the upper surface of the recovery shell (61) for driving the sealing plate (63) to open and close; The annular grinding disc (64) is made of a material with high heat transfer efficiency. A group of connecting holes (611) communicating with the air heat exchange annular cavity (66) are equidistantly provided at the upper part of the inner cavity of the annular air inlet bag (67). The top air inlet port of the heat transfer pipe (69) is connected with the inner cavity of the connecting shell (68) through a high temperature resistant hose. The lower part of the connecting shell (68) penetrates to the bottom of the recovery shell (61), and the lower part of the outer ring wall of the connecting shell (68) is movably connected with the bottom of the inner cavity of the recovery shell (61). The outer ring of the annular block (610) is fixedly connected to the inner cavity of the recovery tank (1) through a support rod, and the bottom of the connecting shell (68) is provided with an air inlet member (12) for introducing external air into the annular air inlet bag (67). The bottom surface of the connecting shell (68) is connected to the annular block (610) through a provided connecting member (13), and the bottom surface of the connecting shell (68) is movably connected to the upper surface of the annular block (610), and the edge of the outer upper surface of the recovery shell (61) is movably connected to the side wall of the filter screen (4).

2. A sintering machine waste heat utilization device according to claim 1, characterized in that: The transmission mechanism (10) comprises a mounting cavity provided at the upper portion of the mounting shell (3), a transmission rod (101) vertically movably installed on the top surface of the inner cavity of the mounting cavity through a bearing, a transmission block (102) moving up and down on the outer surface of the transmission rod (101), a guide groove (103) circumferentially provided on the outer surface of the transmission block (102), a guide block (104) fixed on the left side of the inner cavity of the mounting cavity and adapted to the guide groove (103), and a connecting rod (105) vertically fixed at the center of the bottom surface of the transmission block (102); The top end of the transmission rod (101) is fixedly connected to the end face of the output shaft of the drive motor (9), and the bottom end of the connecting rod (105) passes through the inner cavity of the mounting shell (3) and is fixedly connected to the center of the top face of the recovery shell (61).

3. The sintering machine waste heat utilization device according to claim 1, characterized in that: The linkage mechanism (11) comprises an annular docking block (111) arranged above the center of the upper surface of the recovery shell (61) and a connecting rod (112) for connecting the annular docking block (111) with the sealing plate (63); wherein the two ends of the connecting rod (112) are respectively hinged to the upper surface of the sealing plate (63) and the outer ring wall of the annular docking block (111), the upper surface of the annular docking block (111) is movably connected to the top surface of the inner cavity of the mounting shell (3), and two first spring push rods are arranged on the left and right sides of the bottom surface of the annular docking block (111), and the upper and lower ends of the first spring push rod are respectively fixedly connected to the bottom surface of the annular docking block (111) and the upper surface of the recovery shell (61).

4. The sintering machine waste heat utilization device according to claim 1, characterized in that: The connecting member (13) comprises two vertical rods symmetrically fixed vertically on the left and right sides of the bottom surface of the connecting shell (68), the bottom ends of the vertical rods extend through the bottom of the annular block (610), and the lower movable sleeve of the vertical rods is provided with a first compression spring, the upper and lower ends of the first compression spring are respectively fixedly connected to the bottom surface of the annular block (610) and the bottom end of the vertical rod.

5. The sintering machine waste heat utilization device according to claim 1, characterized in that: The connecting member (7) comprises two butt joint pipes (71) symmetrically and vertically fixed on the left and right sides of the bottom surface of the annular grinding disc (64), a group of vent holes (72) equidistantly arranged in the circumferential direction at the lower part of the inner cavity of the butt joint pipe (71), a blocking block (73) slidably sleeved on the outer surface of the butt joint pipe (71) for covering the vent holes (72), two butt joint holes (74) symmetrically arranged on the left and right sides of the top surface of the inner cavity of the connecting shell (68), and a plurality of butt joint holes (74) arranged in the inner cavity of the butt joint holes (74). Docking plate (75); wherein, a second compression spring is movably sleeved on the upper outer surface of the docking tube (71), and the upper and lower ends of the second compression spring are respectively fixedly connected to the bottom surface of the annular grinding disk (64) and the upper surface of the blocking block (73), and a spring seat is vertically fixedly installed on the bottom surface of the inner cavity of the connecting shell (68), and the output end surface of the spring seat is fixedly connected to the bottom surface of the docking plate (75), and the outer surface of the docking plate (75) is movably connected to the inner cavity of the docking hole (74).

6. The sintering machine waste heat utilization device according to claim 1, characterized in that: The air intake member (12) includes an air intake passage symmetrically opened on the left and right sides of the bottom surface of the connecting shell (68) and connected to the bottom of the inner cavity of the annular air intake bag (67); a check valve for introducing air into the annular air intake bag (67) is arranged at the upper part of the inner cavity of the air intake passage; an air intake hose is connected to the lower part of the inner cavity of the air intake passage, and one end of the air intake hose passes through the outside of the inner cavity of the recovery tank (1).

7. The sintering machine waste heat utilization device according to claim 1, characterized in that: The discharge mechanism (8) comprises a discharge airbag (81) arranged between the annular grinding disc (64) and the inner circle of the annular air inlet bag (67), a group of one-way feed valves (82) arranged equidistantly in the circumferential direction at the upper part of the inner cavity of the discharge airbag (81) for sucking the granular powder in the inner cavity of the annular grinding disc (64), a discharge channel (83) opened at the center of the bottom surface of the connecting shell (68) for communicating with the lower part of the inner cavity of the discharge airbag (81), a one-way discharge valve (84) arranged at the upper part of the inner cavity of the discharge channel (83) for guiding the granular powder in the discharge airbag (81) out of the discharge airbag (81), and a one-way discharge valve (84) arranged in the inner cavity of the annular grinding disc (64). A heat-conducting member (14) is provided at the lower part of the cavity for transferring heat from the granular powder, a collecting box (85) is fixed at the front part of the recovery tank (1) for collecting the granular powder, and a discharge hose (86) is provided on the bottom surface of the connecting shell (68) for connecting the discharge channel (83) with the inner cavity of the collecting box (85); wherein the top surface of the discharge airbag (81) is fixedly connected to the top surface of the inner cavity of the recovery shell (61), the middle part of the outer surface of the discharge airbag (81) is fixedly connected to the inner ring of the annular grinding disc (64), and the bottom surface of the discharge airbag (81) is fixedly connected to the middle part of the upper surface of the connecting shell (68).

8. The sintering machine waste heat utilization device according to claim 7, characterized in that: The heat-conducting member (14) comprises a heat-conducting ring arranged at the lower part of the inner cavity of the annular air inlet bag (67) and heat-conducting rods fixedly installed in the inner cavity of the heat-conducting ring at circumferentially equidistant intervals; wherein the heat-conducting rods penetrate to the lower part of the inner cavity of the discharge air bag (81).

9. The sintering machine waste heat utilization device according to claim 1, characterized in that: The bottom surface of the sealing plate (63) is at the same height as the bottom surface of the inner cavity of the recovery shell (61), and the bottom surface of the sealing plate (63) and the bottom surface of the inner cavity of the recovery shell (61) are respectively provided with grinding textures.

10. The sintering machine waste heat utilization device according to claim 1, characterized in that: Two second spring push rods are symmetrically arranged vertically on the left and right sides below the annular grinding disc (64), the top ends of the second spring push rods are fixedly connected to the bottom surface of the annular grinding disc (64), and the bottom ends of the second spring push rods are fixedly connected to the upper surface of the connecting shell (68).

Images