CN219200036U

CN219200036U - Heat energy recovery system in waste gas in hot air rotary furnace

Info

Publication number: CN219200036U
Application number: CN202220519823.5U
Authority: CN
Inventors: 李明锁; 陈永平; 汪伟民
Original assignee: Nanjing Likavi Intelligent Technology Co ltd
Current assignee: Nanjing Likavi Intelligent Technology Co ltd
Priority date: 2022-03-10
Filing date: 2022-03-10
Publication date: 2023-06-16
Anticipated expiration: 2032-03-10

Abstract

The utility model discloses a heat energy recovery system in waste gas in a hot air rotary furnace, which relates to the field of rotary furnaces and aims at solving the problem that heat energy in hot air in an inner tube of a traditional rotary furnace is wasted.

Description

Heat energy recovery system in waste gas in hot air rotary furnace

Technical Field

The utility model relates to the technical field of rotary furnaces, in particular to a heat energy recovery system in waste gas in a hot air rotary furnace.

Background

The rotary kiln is a thermal apparatus for calcining, calcining or drying granular or powdery materials. Rotary kiln has existed as a conventional kiln type for hundreds of years, but is large or ultra-large, and is mainly applied to primary rough processing of powder or mineral materials, such as firing and calcining of cement clinker; the kaolin is used for preparing titanium dioxide, processing in rare earth industry and the like. Although the yield is very large, the defects of large temperature difference, low temperature control precision, incapability of sealing, realization of accurate atmosphere control and the like exist.

The existing hot air rotary furnace comprises a cylindrical barrel body which is horizontally placed, the barrel body is rotationally arranged on a placing frame, a plurality of inner pipes which are used for placing materials are arranged in the barrel body, the inner pipes are uniformly distributed around the central axis of the barrel body, a combustor which is inserted into the barrel body is arranged at one end of the length direction of the barrel body, a penetrating hole which is used for inserting the inner pipe is formed in the end face of the barrel body, a feeding hole which is opposite to the inner pipe is formed in one face of the end face of the length direction of the barrel body, which is far away from the inner pipe, of the inner pipe, an operator only needs to add materials into the inner pipe from the feeding hole through a feeding device, an annular ventilation shell is arranged on the end face of the length direction of the barrel body, the ventilation shell is communicated with the barrel body, a feeding annular plate is arranged on the inner pipe which is far away from the combustor, and the feeding annular plate is sleeved on the ventilation shell, and the feeding annular plate and the feeding hole are tangentially arranged.

The prior art solutions described above have the following drawbacks: in the process of heating materials in the inner tube in the barrel body, air in the inner tube can be heated to overflow from the feeding hole, and hot air after overflowing can be directly discharged into the air, so that heat energy in the hot air of a person can be wasted at the moment, and heat energy is dissipated, and the problem needs to be solved.

Disclosure of Invention

The utility model aims to provide a heat energy recovery system in waste gas in a hot air rotary furnace, which has the effect of improving the heat energy utilization rate in the rotary furnace.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a heat energy recovery system in waste gas in hot-blast rotary furnace, includes the staving, the one end that the staving length direction kept away from the combustor is provided with the receipts material shell that closes on the feeding annular plate, receive material shell cover and establish on the feeding annular plate, receive one side sealing connection of material shell is on the terminal surface of staving on the opposite side sealing connection on the shell lateral wall that takes a breath, be formed with the filtration cavity between receipts material shell and the staving, the filtration cavity is worn to be equipped with filter equipment in the terminal surface that keeps away from the inner tube, filter equipment includes the filtration shell, the filtration shell seals and wears to establish at the terminal surface that the receipts material shell kept away from the staving, the exhaust hole has been seted up to the one end that the filtration shell lateral wall stretched out the staving, wear to be equipped with the blast pipe that the guide gas flow to in the exhaust hole; the outer side wall of the barrel body is connected with a placing rack for placing the barrel body, one end of the placing rack far away from the burner is provided with a raw material box for feeding materials into the inner pipe, the outer side wall of the raw material box is provided with a feeding barrel which is rotatably arranged in the ventilation shell in a penetrating way, the one end cover that the feed cylinder lateral wall was kept away from the staving is equipped with the aiutage, the feed cylinder lateral wall cover is equipped with the heat recovery pipe of intercommunication aiutage, the one end that the blast pipe kept away from the filtration shell passes the shell of taking a breath and communicates on the aiutage terminal surface.

Through adopting above-mentioned technical scheme, the inner tube is heated the back and produces the hot air that has powder and can enter into the filtration cavity, and filter equipment can block the powder in the filtration cavity, then will not contain the hot air of powder and discharge in the filtration shell, finally through the blast pipe with the hot air directional discharge that contains heat energy can, operating personnel can utilize the heat energy in the hot air with the heat recovery pipe to play the effect that improves the heat energy utilization ratio in the rotary furnace.

Further, a sealing cylinder sleeved on the exhaust pipe is arranged on the outer side wall of the filter shell.

Through adopting above-mentioned technical scheme, seal cylinder and exhaust pipe sleeve are in the same place, can make things convenient for operating personnel to dismantle the blast pipe on the filtration shell on the one hand, and on the other hand seal cylinder can increase the area of connection of blast pipe and filtration shell, and then improves the connection leakproofness of blast pipe and filtration shell.

Further, one end of the outer side wall of the sealing cylinder, which is far away from the filtering shell, is sleeved with a sealing ring plate, and the sealing ring plate is attached to the outer side wall of the filtering shell.

By adopting the technical scheme, the sealing ring plate increases the wall thickness of the sealing cylinder to a certain extent, and improves the rigidity of the sealing cylinder, thereby playing the roles of improving the sealing cylinder and prolonging the service life.

Further, the sealing groove is formed in the inner side wall of the sealing cylinder, and a sealing gasket attached to the outer side wall of the exhaust pipe is arranged in the sealing groove.

Through adopting above-mentioned technical scheme, set up sealed can the pad in the seal groove, can further increase the connection stability of seal tube and blast pipe.

Further, a plurality of exhaust pipe lateral walls all are provided with the backup pad, the one end that the backup pad kept away from the exhaust pipe is fixed at feeding cylinder lateral wall.

Through adopting above-mentioned technical scheme, the blast pipe whole span is great, and the connection of backup pad and feeding cylinder lateral wall can provide the supporting point for the blast pipe to improve the effect of blast pipe whole life.

Further, the outer side wall of the feeding cylinder is sleeved with an integral ring, and one end, far away from the exhaust pipe, of the supporting plate is fixed on the integral ring.

Through adopting above-mentioned technical scheme, whole ring can integrate each exhaust pipe that scatters on a relative stable relative position relation to play the effect that improves the relative position stability between a plurality of exhaust pipes.

Further, a sealing ring is sleeved at one end of the exhaust pipe close to the exhaust barrel, and the sealing ring is rotatably arranged in the exhaust barrel in a penetrating mode.

Through adopting above-mentioned technical scheme, the sealing ring can improve the wholeness and the stability of a plurality of blast pipe ends to improve blast pipe life's effect.

In summary, the beneficial technical effects of the utility model are as follows:

1. the filter shell and the exhaust pipe are adopted, so that the effect of directionally exhausting the air with heat of the filter shell is generated;

2. the sealing cylinder is adopted, so that the effect of convenient disassembly of the exhaust pipe on the filter shell is achieved;

3. the sealing gasket and the sealing groove are adopted, so that the effect of improving the connection tightness of the exhaust pipe and the sealing cylinder is achieved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of a part of the structure of the material receiving shell in the present utility model;

FIG. 3 is an enlarged schematic view of the portion A in FIG. 2;

FIG. 4 is a schematic cross-sectional view of a barrel according to the present utility model;

FIG. 5 is a schematic view of a partial cross-sectional structure of a barrel according to the present utility model;

FIG. 6 is an enlarged schematic view of the portion B in FIG. 5;

FIG. 7 is an enlarged schematic view of the portion C in FIG. 5;

fig. 8 is an enlarged schematic view of the portion D in fig. 5.

In the figure, 1, a barrel body; 11. a placing rack; 12. an inner tube; 13. a burner; 14. penetrating holes; 15. a feed hole; 16. a ventilation shell; 17. a feeding annular plate; 2. receiving a material shell; 21. a filtration cavity; 22. an exhaust hole; 23. an exhaust pipe; 24. a support plate; 25. an integral ring; 26. a seal ring; 3. a filtering device; 31. a filter housing; 32. a sealing cylinder; 33. sealing ring plates; 34. sealing grooves; 35. a sealing gasket; 4. a raw material box; 41. a feeding cylinder; 42. an exhaust pipe; 43. and a heat energy recovery pipe.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the heat energy recovery system in waste gas in a hot air rotary furnace disclosed by the utility model comprises a placing frame 11 for supporting a barrel body 1, wherein the barrel body 1 is horizontally and rotatably arranged on the placing frame 11, a plurality of inner pipes 12 are arranged in the barrel body 1, the inner pipes 12 are uniformly distributed around the central axis of the barrel body 1, a feeding device for feeding materials into the inner pipes 12 is arranged at one end of the placing frame 11 in the length direction of the barrel body 1, a combustor 13 inserted into the barrel body 1 is arranged at the other end of the placing frame 11, raw materials in the inner pipes 12 are powdery particles, and a certain inclination angle is formed in the whole barrel body 1 in order to facilitate the raw materials in the inner pipes 12 to smoothly slide from one end to the other end of the inner pipes 12.

Referring to fig. 1 and 2, when an operator needs to dry the raw material in the tub 1, the raw material is added from one end of the inner tube 12, and then the tub 1 is rotated, the material in the inner tube 12 is dried under the heating of the burner 13, and the dried material slides out from the other end of the inner tube 12.

Referring to fig. 2 and 3, the end face of one end of the barrel body 1, which is far away from the combustor 13, is provided with a ventilation shell 16, the ventilation shell 16 and the interior of the barrel body 1 are in communication, one end of the barrel body 1, which is in length direction, is provided with a feeding annular plate 17, the feeding annular plate 17 is sleeved outside the ventilation shell 16, two ends of the barrel body 1, which are in length direction, are provided with penetrating holes 14 for the inner pipe 12 to penetrate, the end face of the barrel body 1 is provided with a feeding hole 15 which is communicated with the inner pipe 12, the feeding hole 15, the feeding annular plate 17 and the feeding hole 15 are in tangential arrangement, materials added from one end of the barrel body 1 enter the feeding annular plate 17, then the materials are fed into the feeding hole 15 by the feeding annular plate 17, finally enter the inner pipe 12, one end of the barrel body 1, which is far away from the combustor 13, is provided with a receiving shell 2 which is covered on the barrel body 1, one side of the receiving shell 2 is in sealing fit on the end face of the barrel body 1, the other side is fit on the outer side wall of the barrel body 16, a filter cavity 21 is formed between the receiving shell 2 and the end face of the barrel body 1, the filter cavity 31 is arranged in the filter cavity 3, and then the filter cavity 21 is formed in the filter device, and the air can enter the filter cavity 3.

Referring to fig. 4 and 5, the end of the placing rack 11 far away from the burner 13 is provided with a raw material box 4, the outer side wall of the raw material box 4 is rotatably provided with a feeding cylinder 41, one end of the feeding cylinder 41 is arranged in the ventilation shell 16 in a penetrating manner, the filtering device 3 comprises a filtering shell 31 arranged on the side wall of the filtering cavity 21 in a penetrating manner, the exhaust pipe 23 is connected to the outer side wall of the filtering cavity 21 extending from the filtering shell 31, one end, far away from the barrel body 1, of the outer side wall of the feeding cylinder 41 is sleeved with the exhaust pipe 23, a heat energy recovery pipe 43 is communicated with the outer side wall of the exhaust pipe 23, and one end, far away from the filtering shell 31, of the exhaust pipe 23 is connected to the exhaust pipe 23.

Referring to fig. 5 and 6, the exhaust hole 22 is formed in the side wall of the filter shell 31, the seal cylinder 32 is arranged at a position, corresponding to the exhaust hole 22, of the outer side wall of the filter shell 31, the seal cylinder 32 is sleeved in the exhaust pipe 23, the seal groove 34 is formed in the inner side wall of the seal cylinder 32, the seal gasket 35 is arranged in the seal groove 34, and the seal ring plate 33 is arranged at one end, far away from the filter shell 31, of the outer side wall of the seal cylinder 32 in order to improve the rigidity of the seal cylinder 32.

Referring to fig. 5 and 7, a support plate 24 is disposed on the outer side wall of the exhaust pipe 23, one end of the support plate 24 away from the exhaust pipe 23 is connected to the outer side wall of the feeding cylinder 41, in order to fix the positions of the support plates 24, an integral ring 25 is sleeved on the outer side wall of the feeding cylinder 41, and one end of the support plate 24 away from the exhaust pipe 23 is fixed on the outer side wall of the integral ring 25.

Referring to fig. 5 and 8, the exhaust pipe 42 is rotatably provided with the sealing ring 26, and one end of the exhaust pipe 23 remote from the filter housing 31 is fixed in the sealing ring 26, thereby improving the relative positional stability of the ends of the plurality of exhaust pipes 23 remote from the filter housing 31.

The embodiments of the present utility model are all preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model in this way, therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. The utility model provides a heat energy recovery system in waste gas in hot-blast rotary furnace, includes staving (1), its characterized in that: one end of the barrel body (1) far away from the combustor (13) in the length direction is provided with a receiving shell (2) covered on a feeding annular plate (17), the receiving shell (2) is sleeved on the feeding annular plate (17), one side of the receiving shell (2) is connected with the end face of the barrel body (1) in a sealing way, the other side of the receiving shell is connected with the outer side wall of the ventilation shell (16) in a sealing way, a filtering cavity (21) is formed between the receiving shell (2) and the barrel body (1), one end face of the filtering cavity (21) far away from the inner pipe (12) is provided with a filtering device (3) in a penetrating way, the filtering device (3) comprises a filtering shell (31), the filtering shell (31) is arranged on the end face of the receiving shell (2) far away from the barrel body (1) in a sealing way, one end of the outer side wall of the filtering shell (31) extending out of the barrel body (1) is provided with an exhaust hole (22), and an exhaust pipe (23) for guiding gas flow direction is arranged in the exhaust hole (22) in a penetrating way;

the utility model discloses a waste gas treatment device, including staving (1), filter shell (31), waste gas treatment device, filter shell (42), waste gas treatment device, filter shell (31), waste gas treatment device, filter shell (31) are connected with rack (11) of putting up it, the one end that combustor (13) was kept away from to rack (11) is connected with to staving (1) lateral wall, rack (11) is provided with raw material box (4) of feeding in inner tube (12), raw material box (4) lateral wall is provided with rotates and wears to establish feeding cylinder (41) in shell (16) of taking a breath, feeding cylinder (41) lateral wall is kept away from one end cover of staving (1) and is equipped with aiutage (42), feeding cylinder (41) lateral wall cover is equipped with heat recovery pipe (43) of intercommunication aiutage (42), the one end that filtering shell (31) was kept away from to blast pipe (23) passes through to take a breath shell (16) intercommunication on aige (42) terminal surface.

2. The heat energy recovery system in exhaust gas in a hot blast rotary kiln according to claim 1, wherein: the outer side wall of the filter shell (31) is provided with a sealing cylinder (32) sleeved on the exhaust pipe (23).

3. The heat energy recovery system in exhaust gas in a hot blast rotary kiln according to claim 2, characterized in that: one end of the outer side wall of the sealing cylinder (32) far away from the filtering shell (31) is sleeved with a sealing ring plate (33), and the sealing ring plate (33) is attached to the outer side wall of the filtering shell (31).

4. A system for recovering heat energy from exhaust gas in a hot air rotary kiln according to claim 3, wherein: the inner side wall of the sealing cylinder (32) is provided with a sealing groove (34), and a sealing gasket (35) attached to the outer side wall of the exhaust pipe (23) is arranged in the sealing groove (34).

5. The heat energy recovery system in exhaust gas in a hot blast rotary furnace according to claim 4, wherein: the outer side walls of the exhaust pipes (23) are provided with supporting plates (24), and one ends, far away from the exhaust pipes (23), of the supporting plates (24) are fixed on the outer side walls of the feeding cylinders (41).

6. The heat energy recovery system in exhaust gas in a hot air rotary kiln according to claim 5, wherein: the outer side wall of the feeding cylinder (41) is sleeved with an integral ring (25), and one end, far away from the exhaust pipe (23), of the supporting plate (24) is fixed on the integral ring (25).

7. The heat energy recovery system in exhaust gas in a hot blast rotary furnace according to claim 6, wherein: one end of the exhaust pipe (23) close to the exhaust barrel (42) is sleeved with a sealing ring (26), and the sealing ring (26) is rotatably arranged in the exhaust barrel (42) in a penetrating mode.