CN217179307U

CN217179307U - Universal cement rotary kiln alternative fuel pre-burning system

Info

Publication number: CN217179307U
Application number: CN202221097775.1U
Authority: CN
Inventors: 王张伟; 王海宝; 郭彪华; 王钊; 任振峰
Original assignee: Yiyang Conch Cement Co ltd
Current assignee: Yiyang Conch Cement Co ltd
Priority date: 2022-05-09
Filing date: 2022-05-09
Publication date: 2022-08-12
Anticipated expiration: 2032-05-09

Abstract

The utility model discloses a general type rotary cement kiln replaces fuel and burns system in advance, including the hot plate stove, dore furnace and rotary cement kiln, the top of hot plate stove is provided with main dog-house and supplementary dog-house, main dog-house passes through the pipe connection to the useless feed system of flammable solid danger, the feed subassembly has been set up on the supplementary dog-house, the feed subassembly is including the auger delivery reamer, the discharge end below of auger delivery reamer is equipped with the discharging pipe with the butt joint of supplementary dog-house, and butt joint department installs flashboard one, the feed end of carrying a section of thick bamboo is equipped with the feed inlet, install the feeder hopper on the feed inlet, flashboard two is installed to junction in it, pay-off subassembly has been set up to one side of feeder hopper. The utility model has the advantages of reasonable design, through assisting dog-house and corresponding material subassembly of throwing, can carry out solitary simple and easy feed, be favorable to the loose material to enter into the hot coiled furnace simultaneously and carry out abundant burning, satisfy the requirement that all rotary cement kiln alternative fuels precombusted, reduce the unstable interference to the rotary cement kiln system of alternative fuel combustion process, the commonality is good.

Description

Universal cement rotary kiln alternative fuel pre-burning system

Technical Field

The utility model relates to a rotary cement kiln technical field specifically is a general type rotary cement kiln replaces fuel and precombustes system.

Background

The hot plate furnace is a thermal equipment specially developed and designed for the rotary cement kiln to cooperatively dispose wastes. As a buffer device for waste combustion, the hot plate furnace can reduce the influence of the co-processing waste on a kiln system to the maximum extent. Meanwhile, the hot plate furnace and the cone of the decomposing furnace adopt an online connection design mode, and the heat energy utilization rate of the waste can reach 100% theoretically.

In the existing hot plate furnace application system, the domestic garbage is fed into a hot plate furnace for combustion through an original feeding system in cooperation with a nearby domestic garbage treatment plant, the heat energy source of the combustion and hot air of a cement rotary kiln are provided, but in real life, certain conditions are required by the nearby domestic garbage treatment plant, and the feeding system adopts conveying belt feeding, so that the domestic garbage needs to be subjected to pretreatment processes such as crushing, biological drying, extrusion and the like when being fed, and is prepared into urban and rural domestic garbage with the water content of less than 40% and the granularity of 90% < 160-200 mm; the sludge can also be domestic sludge or industrial sludge cakes extruded by a plate frame, the granularity is 90% <300mm and the like, professional equipment is needed in the treatment process, but for the traditional cement production and processing plant, the utilization rate of the co-operation of the domestic garbage processing plant is low, so that the universality of the application is low, and if the equipment and the process flows are increased, the production is complicated, the application cost is increased, and therefore, the feeding mode of the sludge or industrial sludge cakes needs to be improved, so that the sludge or industrial sludge cakes can meet the use requirement of a substitute fuel pre-combustion system.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the defect and not enough that prior art exists, providing a general type rotary cement kiln and replacing fuel and precombusting system, solved all kinds of problems that exist among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme:

a general pre-burning system for replacing fuel in a rotary cement kiln, which comprises a hot plate furnace, a decomposing furnace and the rotary cement kiln, the air inlet at the upper end of the hot plate furnace is connected with a hot air pipeline at the kiln head end of the rotary cement kiln, the outlet of the hot plate furnace is connected with the decomposing furnace through a pipeline, a main feeding port and an auxiliary feeding port are arranged above the hot plate furnace, the main feeding port is connected to a combustible solid hazardous waste feeding system through a pipeline, a feeding component is erected on the auxiliary feeding port and comprises a conveying cylinder, a spiral conveying reamer is rotatably mounted in the conveying cylinder, a discharging pipe in butt joint with the auxiliary feeding port is arranged below the discharging end of the conveying cylinder, and the butt joint department installs flashboard one, the feed end of a transport section of thick bamboo is equipped with the feed inlet, install the feeder hopper on the feed inlet, the junction installs flashboard two in it, the pay-off subassembly has been erect to one side of feeder hopper.

The bottom of the conveying barrel is supported and erected through supporting frames arranged at intervals, the conveying barrel is composed of a semicircular barrel body and a cover plate, an access hole is formed in the cover plate corresponding to the discharge end, and an access cover is covered on the access hole.

The feeder hopper is the toper structure, and its last port all is equipped with the limiting plate that upwards extends except accepting the side of feeding side to the remaining three sides.

The pay-off subassembly is including the feed bin that is used for storing the material, the below of feed bin is equipped with the discharge gate, the discharge gate below is provided with the ration circular transportation link joint that is used for carrying the material, the discharge end of ration circular transportation link joint is located the feeder hopper top.

The feeding assembly comprises a material guide workbench butted with a feeding side port of the feeding hopper, a material storage cylinder is erected above the material guide workbench, the bottom end of the material storage cylinder is spaced from the material guide workbench by a certain distance, guide plates are arranged on two sides of the material guide workbench, and a push block used for pushing materials is arranged at the feeding end of the material guide workbench.

The utility model discloses a chain wheel, including ejector pad, sprocket, gear, last motor output shaft end, the pivot is installed in the preceding tip cavity of ejector pad to rotate, the sawtooth piece is installed to the upper end of pivot, the sprocket is installed to the bottom of pivot, the sprocket of sprocket through ejector pad rear end portion motor output shaft end passes through chain drive and connects.

The length of the push block is larger than that of the workbench between the material storage barrel and the feed hopper, and the push block is driven by a hydraulic cylinder on the outer side of the push block.

The principle is as follows: based on the waste material burner that hot plate furnace and dore furnace lower part cone link to each other, the high temperature tertiary air part with cement rotary kiln gets into the hot plate furnace, makes wherein the gas of 1000 ℃ that produces after the waste material burning get into the dore furnace, burns with the buggy again together, and the burning ash content of waste material that the hot plate furnace produced simultaneously, raw material and tiny particle sintering slag etc. all get into the dore furnace, and heat transfer efficiency is very high, and the heat utilization ratio in the waste material reaches 100%'s characteristic. This application is through the improvement to hot plate furnace dog-house, it has increased and has assisted dog-house and corresponding material subassembly of throwing, it can select as required, can cooperate jointly with the domestic waste treatment plant that closes on, also can oneself carry out solitary simple and easy feed, carry out the automatic feeding to the feeder hopper through the pay-off subassembly, then carry out the transport of breaking up while carrying through the auger delivery reamer, be favorable to the loose material to get into the hot plate stove and carry out abundant burning, two pass lock wind has been realized through flashboard one and flashboard two, prevent that cold air from directly getting into the hot plate furnace, reduce the influence to cement kiln decomposing furnace thermodynamic system in the hot plate furnace working process, perhaps two kinds of modes of throwing the material combination, satisfy the requirement that all cement alternative fuels precombustion, good commonality.

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

the utility model has the advantages of reasonable design, through assisting dog-house and corresponding material subassembly of throwing, can carry out solitary simple and easy feed, be favorable to the material loose simultaneously to enter into and carry out abundant burning in the hot coiled tubing, satisfy the requirement that the rotary cement kiln alternative fuel precombusted, the commonality is good.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a schematic structural view of the delivery cylinder.

Fig. 3 is a schematic structural view of the quantitative feeding assembly of the present invention.

Fig. 4 is a schematic structural diagram of a push block in the feeding assembly.

Reference numerals:

1. a hot plate furnace; 2. a decomposing furnace; 3. a cement rotary kiln; 4. a hot air duct; 5. a main feeding port; 6. an auxiliary feeding port; 7. a supply assembly; 7-1, a conveying cylinder; 7-2, carrying out spiral reamer conveying; 7-3, a discharge pipe; 7-4, a first gate plate; 7-5, a feed hopper; 7-6 of a second gate plate; 8. a feeding assembly; 7-1-1, a semicircular cylinder body; 7-1-2, a cover plate; 9. an access hole; 10. an access cover; 11. a limiting plate; 12. a material guiding workbench; 13. a storage cylinder; 14. a guide plate; 15. a push block; 16. a rotating shaft; 17. a saw tooth blade; 18. a sprocket; 19. an electric motor.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

See FIGS. 1-2;

a universal rotary cement kiln alternative fuel pre-burning system comprises a hot plate furnace 1, a decomposing furnace 2 and a rotary cement kiln 3, wherein an air inlet at the upper end of the hot plate furnace 1 is connected with a hot air pipeline 4 at the kiln head end of the rotary cement kiln, an outlet of the hot plate furnace 1 is connected to the decomposing furnace 2 through a pipeline, a main feeding port 5 and an auxiliary feeding port 6 are arranged above the hot plate furnace 1, the main feeding port 5 is connected to a combustible solid hazardous waste feeding system through a pipeline, a feeding component 7 is erected on the auxiliary feeding port 6, the feeding component 7 comprises a conveying cylinder 7-1, a spiral conveying reamer 7-2 is rotatably arranged in the conveying cylinder 7-1, a discharging pipe 7-3 butted with the auxiliary feeding port 6 is arranged below the discharging end of the conveying cylinder 7-1, a first shutter plate 7-4 is arranged at the butted position, a feeding end of the conveying cylinder 7-1 is provided with a feeding port, and a feeding hopper 7-5 is arranged on the feeding port, the connection part is provided with a second gate plate 7-6, and one side of the feed hopper 7-5 is provided with a feeding component 8.

Furthermore, the bottom end of the conveying cylinder 7-1 is supported and erected through supporting frames arranged at intervals, the conveying cylinder 7-1 consists of a semicircular cylinder body 7-1-1 and a cover plate 7-1-2, an access opening 9 is formed in the cover plate 7-1-2 corresponding to the discharging end, and an access cover 10 covers the access opening 9. Through the structural design of access hole, if appear blocking up now conveniently to its maintenance, and through the transport section of thick bamboo structure that semi-circular barrel and apron are constituteed, when having guaranteed transfer passage, made things convenient for the installation of flashboard one and flashboard two.

Furthermore, the feed hopper 7-5 is of a conical structure, and limiting plates 11 extending upwards are arranged on the other three side surfaces except the side surface of the upper port of the feed hopper for receiving the feeding side. Through the structure of limiting plate, extend spacingly to the up end of feeder hopper, be convenient for from one side feeding. The feeding component 8 comprises a bin 8-1 for storing materials, a discharge port is arranged below the bin 8-1, a quantitative circulating conveying chain plate 8-2 for conveying the materials is arranged below the discharge port, the discharge end of the quantitative circulating conveying chain plate 8-2 is positioned above the feed hopper 7-5, and the materials are conveyed and fed to the feed hopper through the quantitative circulating conveying chain plate.

As shown in fig. 3-4; the feeding component 8 is a quantitative feeding component and comprises a material guiding workbench 12 butted with a feeding side port of the feeding hopper 7-5, a material storage cylinder 13 is erected above the material guiding workbench 12, the bottom end of the material storage cylinder 13 is spaced from the material guiding workbench 12 by a certain distance, guide plates 14 are arranged on two sides of the material guiding workbench 12, and a push block 15 used for pushing materials is arranged at the feeding end of the material guiding workbench 12. Through the structure of storage section of thick bamboo, realized depositing of rubbish, conveniently throw the material, through the guide workstation, realized the support of the ejection of compact, realize the ejection of compact to the storage section of thick bamboo below material through the ejector pad.

The rotating shaft 16 is rotatably installed in a cavity of the front end part of the pushing block 15, the rotating shaft is installed in the cavity of the front end part, the sawtooth piece 17 is installed at the upper end part of the rotating shaft 16, the front end face of the pushing block can be opened conveniently, the chain wheel 18 is installed at the bottom end of the rotating shaft 16, a channel for a chain to pass through is formed in the bottom end part of the pushing block, and the chain wheel 18 is connected with a chain wheel at the output shaft end of the motor 19 at the rear end part of the pushing block through chain transmission. If the width of the push block is too wide, one group of saw tooth sheets can not meet the requirement, a structure with parallel intervals can be added according to the requirement, and rotating shafts corresponding to adjacent saw tooth sheets are in transmission connection through gears on the rotating shafts, (for example, when three groups of the push block are adopted, driving gears are also arranged on the rotating shafts 16, and driven gears meshed with the driving gears are arranged on the rotating shafts on two sides). The length of the push block 15 is larger than that of the workbench between the storage barrel 13 and the feed hopper 7-5, and the movement of the push block 15 is driven by a hydraulic cylinder on the outer side of the push block. Through the requirement of the length of ejector pad, satisfy and to push away the material to feeder hopper department and can carry out the requirement that supports to the material in the storage section of thick bamboo simultaneously.

Although the present description is described in terms of embodiments, not every embodiment includes only a single embodiment, and such description is for clarity only, and those skilled in the art should be able to integrate the description as a whole, and the embodiments can be appropriately combined to form other embodiments as will be understood by those skilled in the art.

Therefore, the above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application; all changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. The utility model provides a general type rotary cement kiln replaces fuel and preburns system, including hot-blast pipeline (4) of hot-blast furnace (1) upper end air inlet and rotary cement kiln head end are connected, hot-blast pipeline (2), its characterized in that are connected to decomposing furnace (2) through the pipe connection to in the export of hot-blast furnace (1): a main feeding port (5) and an auxiliary feeding port (6) are arranged above the hot plate furnace (1), the main feeding port (5) is connected to a combustible solid hazardous waste feeding system through a pipeline, a feeding assembly (7) is erected on the auxiliary feeding port (6), the feeding component (7) comprises a conveying cylinder (7-1), a spiral conveying reamer (7-2) is rotatably arranged in the conveying cylinder (7-1), a discharge pipe (7-3) butted with the auxiliary feed opening (6) is arranged below the discharge end of the conveying cylinder (7-1), a first gate plate (7-4) is arranged at the butt joint part, a feed inlet is arranged at the feed end of the conveying cylinder (7-1), a feed hopper (7-5) is arranged on the feed inlet, a second gate plate (7-6) is installed at the joint, and a feeding component (8) is erected on one side of the feeding hopper (7-5).

2. The rotary cement kiln alternative fuel precombustion system as claimed in claim 1, wherein: the bottom end of the conveying cylinder (7-1) is supported and erected through supporting frames arranged at intervals, the conveying cylinder (7-1) is composed of a semicircular cylinder body (7-1-1) and a cover plate (7-1-2), an access opening (9) is formed in the cover plate (7-1-2) corresponding to the discharge end, and an access cover (10) covers the access opening (9).

3. The rotary cement kiln alternative fuel precombustion system as claimed in claim 1, wherein: the feed hopper (7-5) is of a conical structure, and limiting plates (11) extending upwards are arranged on the other three side surfaces except the side surface of the upper end opening of the feed hopper for receiving the feeding side.

4. The rotary cement kiln alternative fuel precombustion system as claimed in claim 1, wherein: the feeding assembly (8) comprises a bin (8-1) for storing materials, a discharge port is arranged below the bin (8-1), a quantitative circulating conveying chain plate (8-2) for conveying the materials is arranged below the discharge port, and the discharge end of the quantitative circulating conveying chain plate (8-2) is positioned above the feed hopper (7-5).

5. The rotary cement kiln alternative fuel precombustion system as claimed in claim 1, wherein: the quantitative feeding assembly is characterized in that the feeding assembly (8) is a quantitative feeding assembly and comprises a material guide workbench (12) butted with a feeding side port of a feeding hopper (7-5), a material storage cylinder (13) is erected above the material guide workbench (12), the bottom end of the material storage cylinder (13) is separated from the material guide workbench (12) by a certain distance, guide plates (14) are arranged on two sides of the material guide workbench (12), and a push block (15) used for pushing materials is arranged at the feeding end of the material guide workbench (12).

6. The rotary cement kiln alternative fuel precombustion system as claimed in claim 5, wherein: the front end part cavity of the push block (15) is rotatably provided with a rotating shaft (16), the upper end part of the rotating shaft (16) is provided with a sawtooth piece (17), the bottom end of the rotating shaft (16) is provided with a chain wheel (18), and the chain wheel (18) is connected with the chain wheel at the output shaft end of the push block rear end part motor (19) in a chain transmission manner.

7. The alternative fuel pre-combustion system for a universal rotary cement kiln as claimed in claim 5, wherein: the length of the push block (15) is larger than that of a workbench between the material storage barrel (13) and the feed hopper (7-5), and the push block (15) moves under the drive of a hydraulic cylinder on the outer side of the push block.