CN213454214U

CN213454214U - Hot air device for belt type roasting machine

Info

Publication number: CN213454214U
Application number: CN202022120305.XU
Authority: CN
Inventors: 朱强龙; 袁春斌
Original assignee: JIANGSU HONGDA SPECIAL STEEL MACHINERY PLANT CO Ltd
Current assignee: JIANGSU HONGDA SPECIAL STEEL MACHINERY PLANT CO Ltd
Priority date: 2020-09-24
Filing date: 2020-09-24
Publication date: 2021-06-15
Anticipated expiration: 2030-09-24

Abstract

The utility model discloses a hot air device for a belt type roasting machine, which comprises a combustion chamber, a hot air pipe and a transfer chamber, wherein the hot air pipe penetrates through the combustion chamber, the air outlet end of the hot air pipe is communicated with the air inlet end of the transfer chamber, the air inlet end of the hot air pipe is provided with a first air pump in a matching way, the air outlet end of the transfer chamber is provided with a plurality of mixing chambers in a parallel communication way, the surfaces of the mixing chambers are communicated and provided with a replenishing pipe and a conveying pipe, one end of the replenishing pipe, which is far away from the mixing chambers, is provided with a second air pump in a matching way, the second air pump drives room temperature air to pass through the replenishing pipe and enter the mixing chambers, one end of the conveying pipe, which is far away from the mixing chambers, is communicated and butted with the heating regions of the roasting machine, the mixing chambers are different in temperature sections with the heating regions, the temperature of the gas output into the conveying pipe can be controlled, so that the requirement of the process temperature of the corresponding working section of the roasting machine is met.

Description

Hot air device for belt type roasting machine

Technical Field

The utility model relates to a roasting machine technical field especially relates to a hot air device for belt roasting machine.

Background

A belt-type roasting machine is a common apparatus for processing iron ore pellets. Compared with a chain grate machine and a rotary kiln, the roasting machine has a more compact equipment structure and is beneficial to realizing energy conservation. The heating and heat preservation of the existing roasting machine usually uses coal gas and heavy oil as fuel, and the heated air is directly supplied to equipment, so that the running cost of the equipment is larger. Therefore, it is necessary to invent a hot air device for a straight grate roaster that has a good heating effect and a high heat utilization rate.

Disclosure of Invention

In order to overcome the technical problem, an object of the present invention is to provide a hot air device for a belt type roasting machine, which has good heating effect and high heat utilization rate.

In order to achieve the above purpose, the utility model discloses a technical scheme is: a hot air device for a belt type roasting machine comprises a combustion chamber, a hot air pipe and a transfer chamber, wherein the hot air pipe penetrates through the combustion chamber, an air outlet end of the hot air pipe is communicated with an air inlet end of the transfer chamber, a first air pump is arranged at the air inlet end of the hot air pipe in a matching manner, a plurality of mixing chambers are arranged at the air outlet end of the transfer chamber in a parallel communication manner, a supplementing pipe and a conveying pipe are arranged on the surfaces of the mixing chambers in a communicating manner, a second air pump is arranged at one end, far away from the mixing chambers, of the supplementing pipe in a matching manner and drives room-temperature air to penetrate through the supplementing pipe to enter the mixing chambers, one end, far away from the mixing chambers, of the conveying pipe is communicated and butted with a heating region of the roasting machine, and different mixing chambers are respectively; a first temperature sensor is arranged in the middle of the top end of the transfer chamber, and a second temperature sensor is arranged in the middle of the top end of the mixing cavity; the combustion chamber is far away from run through on one side lateral wall of transfer chamber and is provided with first air outlet and second air outlet, first air outlet and second air outlet are linked together with the pay-off fan that the outside set up and combustion fan's exit end respectively, the entrance point of pay-off fan corresponds the setting with the discharge gate in buggy storehouse.

Further, the periphery of the hot-blast main is provided with a heat transfer component, the heat transfer component comprises a lantern ring and a heat-conducting plate, the lantern ring is fitted and sleeved on the periphery of the hot-blast main, one end of the heat-conducting plate is annularly and uniformly connected and arranged on the surface of the lantern ring, and the other end of the heat-conducting plate extends in the direction away from the lantern ring.

Further, the lantern ring is internally provided with a heat exchange cavity, and is a plurality of heat exchange cavity ring is evenly distributed at intervals, and is a plurality of the intercommunication connection is provided with the transfer pipe between the heat exchange cavity, still the intercommunication is provided with feed liquor pipe and drain pipe on the heat exchange cavity, the transfer pipe both ends are linked together with feed liquor pipe and drain pipe respectively, the internal circulation of transfer pipe flows has heat transfer medium.

Further, the inside hoist and mount subassembly that is provided with of combustion chamber, hoist and mount subassembly includes snap ring and heat-resisting pole, and is mated the snap ring sets up respectively and is being located combustion chamber inside the head and the tail both ends department of hot-blast main, heat-resisting pole one end with snap ring fixed connection, the other end with the top inner wall fixed connection of combustion chamber.

Further, the bottom of combustion chamber is provided with the material collecting groove, the material collecting groove top corresponds the lock and is provided with the wind-proof board, the wind-proof board surface runs through along self thickness direction and is provided with the small opening, the downthehole guide piece that is provided with of small opening, guide piece upper end with the upper end border department in small opening links up, the lower extreme of guide piece extends to the below of wind-proof board, the projection area of small opening in vertical direction falls into the projection area of guide piece in vertical direction is interior.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model provides a hot air device for belt type roasting machine, which comprises a combustion chamber, a hot air pipe and a transfer chamber, wherein the hot air pipe penetrates through the combustion chamber, the air outlet end of the hot air pipe is communicated with the air inlet end of the transfer chamber, the air inlet end of the hot air pipe is provided with a first air pump in a matching way, the air outlet end of the transfer chamber is provided with a plurality of mixing chambers in a parallel communication way, the surfaces of the mixing chambers are communicated and provided with a replenishing pipe and a conveying pipe, one end of the replenishing pipe, which is far away from the mixing chambers, is provided with a second air pump in a matching way, the second air pump drives room temperature air to pass through the replenishing pipe and enter the mixing chambers, one end of the conveying pipe, which is far away from the mixing chambers, is communicated and butted with the heating regions of the roasting machine, the different mixing chambers are respectively communicated with different temperature sections of the heating, the temperature of the gas output into the conveying pipe can be controlled, so that the requirement of the process temperature of the corresponding working section of the roasting machine is met.

Drawings

FIG. 1 is a schematic view of the overall structure of the hot air device of the present invention;

FIG. 2 is a schematic view of the connection relationship between the hoisting assembly and the combustion chamber and the hot air pipe;

FIG. 3 is a schematic view of the connection relationship between the transfer pipe, the liquid inlet pipe, the liquid outlet pipe and the heat exchange cavity;

FIG. 4 is a schematic view of the installation of the transfer pipe of the present invention;

fig. 5 is a schematic structural view of the wind-proof plate of the present invention.

In the figure: 1. a combustion chamber; 2. a hot air pipe; 3. a transfer chamber; 31. a mixing chamber; 32. a replenishing pipe; 33. a delivery pipe; 34. a first temperature sensor; 35. a second temperature sensor; 4. a heat transfer assembly; 41. a collar; 42. a heat conducting plate; 43. a heat exchange cavity; 44. a transfer tube; 45. a liquid inlet pipe; 46. a liquid outlet pipe; 5. hoisting the assembly; 51. a snap ring; 52. A heat resistant rod; 6. a material collecting groove; 7. a windbreak panel; 71. a material leaking hole; 72. and (3) a material guide sheet.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

The utility model provides a hot-blast device for belt roasting machine, as shown in figure 1, including combustion chamber 1, hot-blast main 2 and transfer room 3, hot-blast main 2 runs through combustion chamber 1, utilize the heat that fuel burning produced in combustion chamber 1 to air in the heating tube, thereby obtain hot-blastly, the end of giving vent to anger of hot-blast main 2 and the inlet end intercommunication of transfer room 3, the inlet end cooperation of hot-blast main 2 is provided with first air pump, first air pump is with external air drum into in hot-blast main 2, go into transfer room 3 after combustion chamber 1 heats, the top middle part of transfer room 3 is provided with first temperature sensor 34, the model is: 602F-3500F, utilize first temperature sensor 34 to monitor the gas temperature of circulation in the transfer chamber 3, the end parallel intercommunication of giving vent to anger of transfer chamber 3 is provided with a plurality of hybrid chambers 31, hybrid chamber 31 surface intercommunication is provided with supplementary pipe 32 and conveyer pipe 33, the one end cooperation that hybrid chamber 31 was kept away from to supplementary pipe 32 is provided with the second air pump, second air pump drive room temperature air passes in supplementary pipe 32 gets into hybrid chamber 31, and flow out from conveyer pipe 33 after mixing with the hot-air that comes from transfer chamber 3, hybrid chamber 31 top middle part is provided with second temperature sensor 35, the model is: 602F-3500F, the temperature of the gas in the corresponding mixing chamber 31 can be monitored by the second temperature sensor 35, one end of the conveying pipe 33, which is far away from the mixing chamber 31, is communicated and butted with the heating area of the roasting machine, different mixing chambers 31 are respectively communicated with different temperature sections of the heating area of the roasting machine, the gas supply rates of the first gas pump and the second gas pump are correspondingly adjusted by referring to the temperature data monitored by the first temperature sensor 34 and the second temperature sensor 35, and the temperature of the gas output into the conveying pipe 33 can be controlled, so that the requirements of the corresponding working section process temperature of the roasting machine are met;

the combustor 1 is provided with a first air outlet 8 and a second air outlet 9 through the side wall of one side far away from the transfer chamber 3, the first air outlet 8 and the second air outlet 9 are respectively communicated with the outlet ends of a feeding fan and a combustion fan which are arranged outside, the inlet end of the feeding fan is arranged corresponding to the discharge hole of the pulverized coal bin, the discharge path of the feeding fan is intersected with the air outlet path of the combustion fan, the pulverized coal is conveyed to the inside of the combustor 1 by air for combustion, meanwhile, the combustion fan is used for supplementing air inwards to ensure sufficient combustion to improve the heat efficiency, and solid residues generated by combustion can fall to the bottom of the combustor 1.

As shown in fig. 1, fig. 3 and fig. 4, a heat transfer component 4 is arranged on the periphery of the hot air pipe 2, the heat transfer component 4 comprises a lantern ring 41 and heat conducting plates 42, the lantern ring 41 is fitted and sleeved on the periphery of the hot air pipe 2, one ends of the heat conducting plates 42 are annularly and uniformly connected to the surface of the lantern ring 41, and the other ends extend away from the lantern ring 41, because the pipe diameter of the hot air pipe 2 is limited, the heat exchange area provided by the pipe wall is limited, which is not beneficial to improving the heating efficiency, and the lantern ring 41 can be matched with the heat conducting plates 42 by utilizing the heat conducting material of the lantern ring 41, so;

the lantern ring 41 is internally provided with heat exchange cavities 43, the heat exchange cavities 43 are annularly and uniformly distributed at intervals, a transfer pipe 44 is communicated and connected among the heat exchange cavities 43, the heat exchange cavities 43 are also communicated and provided with a liquid inlet pipe 45 and a liquid outlet pipe 46, two ends of the transfer pipe 44 are respectively communicated with the liquid inlet pipe 45 and the liquid outlet pipe 46, a heat transfer medium flows in the transfer pipe 44 in a circulating manner, the heat transfer medium can be water, when the hot air pipe 2 normally supplies heat to the roasting machine, the interior of the transfer pipe 44 is kept hollow, the transfer pipe 44 is made of heat-resistant steel, the problems of creep deformation and the like can not be caused under the normal use strength, when the roasting machine is prepared, water flow is conveyed into the liquid inlet pipe 45 by a liquid pump, the water flows through the transfer pipe 44 and rapidly passes through the heat exchange cavities 43, the absorbed heat is changed into hot water which is discharged from the liquid outlet pipe 46, the hot water can, the energy utilization efficiency is improved.

As shown in fig. 2, the inside hoist and mount subassembly 5 that is provided with of combustion chamber 1, hoist and mount subassembly 5 includes snap ring 51 and heat-resisting pole 52, mated snap ring 51 sets up respectively in the head and the tail both ends department that is located the inside hot-blast main 2 of combustion chamber 1, heat-resisting pole 52 one end and snap ring 51 fixed connection, the other end and the top inner wall fixed connection of combustion chamber 1, thereby realize the hoist and mount of hot-blast main 2, the unsettled setting of hot-blast main 2 just can not influence the accumulation of the produced solid residue of burning in combustion chamber 1 bottom, thereby can guarantee that the heat transfer effect in the long-time operation is stable, the arrow shows to be the gas flow direction in.

As shown in fig. 5, a material collecting groove 6 is arranged at the bottom of the combustion chamber 1, a wind-proof plate 7 is correspondingly buckled above the material collecting groove 6, a material leaking hole 71 is arranged on the surface of the wind-proof plate 7 in a penetrating manner along the thickness direction of the wind-proof plate 7, a material guide piece 72 is arranged in the material leaking hole 71, the upper end of the material guide piece 72 is connected with the upper end edge of the material leaking hole 71, the lower end of the material guide piece 72 extends to the lower side of the wind-proof plate 7, solid residues generated in combustion can slide into the material collecting groove 6 below the wind-proof plate 7 along the material guide piece 72, the projection area of the material leaking hole 71 in the vertical direction falls into the projection area of the material guide piece 72 in the vertical direction, as shown in the figure, once the solid residues fall into the material collecting groove 6, the air flow rushing into the material collecting groove 6 can be effectively reduced, and the solid residues are prevented from, the waste collection efficiency is improved, and the influence of the flying residues on the heat transfer efficiency of the heat transfer component 4 is reduced to the minimum.

The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. A hot blast device for a straight grate roasting machine, characterized in that: comprises a combustion chamber (1), a hot air pipe (2) and a transfer chamber (3), wherein the hot air pipe (2) penetrates through the combustion chamber (1), the air outlet end of the hot air pipe (2) is communicated with the air inlet end of the transfer chamber (3), the air inlet end of the hot air pipe (2) is provided with a first air pump in a matching way, the air outlet end of the transfer chamber (3) is communicated with a plurality of mixing cavities (31) in parallel, the surface of the mixing cavity (31) is communicated with a supplementary pipe (32) and a conveying pipe (33), a second air pump is arranged at one end of the supplementary pipe (32) far away from the mixing cavity (31) in a matching way, the second air pump drives the air with the room temperature to pass through the supplementary pipe (32) and enter the mixing cavity (31), one end of the conveying pipe (33) far away from the mixing cavity (31) is communicated and butted with a heating area of the roasting machine, and different mixing cavities (31) are respectively communicated with different temperature sections of the heating area of the roasting machine; a first temperature sensor (34) is arranged in the middle of the top end of the transfer chamber (3), and a second temperature sensor (35) is arranged in the middle of the top end of the mixing cavity (31); the combustion chamber (1) is far away from run through on one side lateral wall of transfer chamber (3) and be provided with first air outlet (8) and second air outlet (9), first air outlet (8) and second air outlet (9) are linked together with the exit end of the pay-off fan that the outside set up and combustion fan respectively, the entrance point of pay-off fan corresponds the setting with the discharge gate in buggy storehouse.

2. A hot blast apparatus for a straight grate roaster as claimed in claim 1, wherein: the periphery of hot-blast main (2) is provided with heat transfer subassembly (4), heat transfer subassembly (4) are including the lantern ring (41) and heat-conducting plate (42), the laminating cover of lantern ring (41) is established hot-blast main (2) periphery, it is a plurality of heat-conducting plate (42) one end hoop is evenly fixed to be set up lantern ring (41) surface, the other end is to keeping away from the direction extension of the lantern ring (41).

3. A hot blast apparatus for a straight grate roaster as claimed in claim 2, wherein: lantern ring (41) inside heat transfer chamber (43) that is provided with, it is a plurality of heat transfer chamber (43) hoop evenly spaced apart distributes, and is a plurality of the intercommunication is connected between heat transfer chamber (43) and is provided with transfer pipe (44), it is provided with feed liquor pipe (45) and drain pipe (46) still to communicate on heat transfer chamber (43), transfer pipe (44) both ends are linked together with feed liquor pipe (45) and drain pipe (46) respectively, the internal circulation that shifts pipe (44) flows has heat transfer medium.

4. A hot blast apparatus for a straight grate roaster as claimed in claim 1, wherein: combustor (1) inside is provided with hoist and mount subassembly (5), hoist and mount subassembly (5) include snap ring (51) and heat-resisting pole (52), and is mated snap ring (51) set up respectively and are being located combustor (1) inside the head and the tail both ends department of hot-blast main (2), heat-resisting pole (52) one end with snap ring (51) fixed connection, the other end with the top inner wall fixed connection of combustor (1).

5. A hot blast apparatus for a straight grate roaster as claimed in claim 1, wherein: the bottom of combustion chamber (1) is provided with material collecting groove (6), material collecting groove (6) top corresponds the lock and is provided with wind-proof board (7), wind-proof board (7) surface is provided with small opening (71) along self thickness direction running through, be provided with guide piece (72) in small opening (71), guide piece (72) upper end with the upper end border department of small opening (71) links up, the lower extreme of guide piece (72) extends to the below of wind-proof board (7), small opening (71) are in the ascending projection region of vertical side and fall into guide piece (72) is in the ascending projection region of vertical side.