CN201314778Y

CN201314778Y - Dual-barrel rotary kiln

Info

Publication number: CN201314778Y
Application number: CNU2008202159296U
Authority: CN
Inventors: 丁大武; 胡波; 唐修仁; 万建东
Original assignee: ZHEJIANG EFFUL NEW MATERIAL SCIENCE AND TECHNOLOGY Co Ltd
Current assignee: ZHEJIANG EFFUL NEW MATERIAL SCIENCE AND TECHNOLOGY Co Ltd
Priority date: 2008-11-25
Filing date: 2008-11-25
Publication date: 2009-09-23
Anticipated expiration: 2018-11-25

Abstract

The utility model discloses a novel dual-barrel rotary kiln which comprises a barrel body, a feeding part, a discharging part and a transmission part. The feeding part comprises a feeding tube, the barrel body comprises an inner barrel and an outer barrel, an end plate is mounted at one end of the outer barrel, one end of the inner barrel is arranged inside the outer barrel and is supported by an inner barrel supporting tube, and the inner barrel and the outer barrel are not connected with each other; and the other end of the inner barrel is supported by a support roller, and supporting points are positioned in one plane. The inner barrel is provided with a large head and a small head so as to form a slope gradient of 0.1-0.2%. In the utility model, a dual-barrel (inner barrel and outer barrel) structure is designed, thereby lengthening the travelling distance of materials in the kiln and resulting in sufficient heat exchange. A lifting blade with a special shape is arranged on the inner sides of both the inner barrel and the outer barrel, a guiding device is arranged inside the outer barrel, and a downwardly inclining partition plate is mounted inside the feeding tube. Therefore, the wet material to be processed can smoothly pass through the feeding tube and the outer barrel and then be turned to the inner barrel to conduct sufficient reverse heat exchange with high-temperature hot air flow, and the purpose of drying and dewatering with less energy is achieved.

Description

A kind of bitubular rotary kiln

Technical field

The utility model relates to the novel device of a kind of oven dry, calcining water-containing materials, relates in particular to a kind of bitubular rotary kiln.

Background technology

In the calcining and drying process of cement, gypsum and some chemical industry, building material industry, traditional handicraft is all used the monotubular rotary kiln, and is fairly simple, and cost is low, but energy consumption is higher, and efficient is low, and investment was also big when stroke was long.Also seeing has " double-deck rotary kiln ", patent, but in fact still monotubular kiln just adds the pair of lamina kiln hood before monotubular.

The utility model content

The technical problem that the utility model solved provides a kind of energy-saving and cost-reducing little bitubular rotary kiln of investing again.

The technical solution of the utility model is: a kind of bitubular rotary kiln, comprise cylindrical shell, feed part, discharge part and running part, wherein feed partly comprises tremie pipe, described cylindrical shell comprises inner core and urceolus, one end of urceolus is equipped with end plate, inner core one end is supported by the inner core stay pipe in urceolus, and inner core does not link to each other with urceolus; The other end of inner core is supported by carrying roller, and the strong point in one plane.Wherein inner core has major part and microcephaly, forms 0,1-0,2% the gradient.

As a kind of improvement of the present utility model, be provided with guider in the described urceolus, make material be easy to import inner core by urceolus.Guider is by curved surface frustum and dull and stereotyped the composition, and frustum is fixedlyed connected with dull and stereotyped, and flat board is fixedly connected on the end plate, and frustum stretches in the inner core, and frustum does not link to each other with inner core.

As further improvement of the utility model, the inboard of urceolus and inner core is equipped with lifting blade, and described lifting blade is a curved slab, is installed in the inboard of inner core and urceolus by two curved-line thread path.

As another improvement of the present utility model, in the described tremie pipe dividing plate is installed, increase the stroke on material decline and the thermal current.Described dividing plate is downward-sloping, and an end is installed on two opposite side of tremie pipe; The other end is unsettled.

The structure of the inside and outside bitubular of the utility model design, the material stroke in the kiln body that can extend makes it fully to carry out heat exchange.All be provided with the lifting blade of given shape in the inboard of inner/outer tube, in urceolus, be provided with simultaneously guider, and downward-sloping dividing plate is installed in the tremie pipe, making needs the wet stock (chemical gypsum) of processing can pass through tremie pipe, urceolus very swimmingly, turn to inner core, with the reverse abundant exchange of elevated temperature heat air-flow, heavily realize reaching purpose dry, dehydration with a spot of energy.Not only can save energy and reduce the cost, and investment is also little.

Description of drawings

Fig. 1 is the schematic diagram of the utility model rotary kiln.

Fig. 2 is the utility model lifting blade schematic diagram.

Fig. 3 is the utility model guider schematic diagram.

Fig. 4 is the utility model tremie pipe schematic diagram.

Fig. 5 is the utility model inner core stay pipe schematic diagram.

The specific embodiment

The utility model fully carries out heat exchange for lengthening material stroke in the kiln body, has designed inner core 5 and urceolus 6; Urceolus 6 is a Long Circle cylindrical shell, end sealing, and the other end is a feed end.Be welded with spiral lifting blade 14 in two, in the utility model, adopt the bigger two curved-line thread path shop lifting blade 14 of propulsive force; Lifting blade 14 is the circular arc type batten, have lifting many, leak material less, effective advantage; In the urceolus sealed end, design a New Guide Device 11, make material be easy to import inner core 5 by urceolus 6; It is one forms for the frustum 12 of curved surface by six, and big women's head-ornaments be flat board 13, is installed in bolt on the end plate 10 of urceolus sealed end of sealing, and the other end of frustum 12 is a tablet, stretches to the inner core feed end.Material changes inner core over to by urceolus easily in the rotary kiln of rotation like this; Establish 2 groups of inner core stay pipes 8 in the middle of the inner/outer tube, is made up of six steel pipes for every group, the tube material employing is high temperature resistant, intensity is high, corrosion resistant steel alloy or stainless steel tube are made.They are fixed on the central authorities of urceolus firmly with inner core, and not overslaugh material flows in urceolus again.Inner core has major part and microcephaly, forms 0,1-0,2% the gradient, adds the effect of lifting blade, and material is easy to flow to major part from the microcephaly; Thick about the 1 centimeter fireproof coating of wall liner in the inner core, the peripheral hardware heat preserving and insulating material, and adopt boiler plate or stainless steel material high temperature resistant, that distortion is little, guarantee that like this inner core can bear the high temperature about 1000 degree, is out of shape again little. Inner core is supported by 2 groups of inner core stay pipes 8 in urceolus, and major part half part is supported by one group of carrying roller 9, and three fulcrums substantially in one plane.

7 preheatings of material (ardealite or other chemical gypsum) input tremie pipe, oven dry, dividing plate 15 increases the stroke on material decline and the thermal current.Material and thermal current fully exchange like this, and the thermal efficiency is very high; Substantially reach the purpose of oven dry material.Material enters rotary kiln urceolus 6 from feed opening, drives continuous rotational flow to urceolus 6 sealed ends by urceolus 6 and lifting blade 14 thereof, all sends material to inner core 5 by guider 11.Generally than about 6 meters of outer tube lengths, the microcephaly is in urceolus for inner core 5; Because the effect material of this gradient and lifting blade is easy to flow to major part from the microcephaly.The elevated temperature heat air-flow and the material that come from the inner core import fully exchange, reach purpose dry, calcining.Simultaneously, tremie pipe is also as blast pipe.Material and thermal current fully exchange like this, and the thermal efficiency is very high; Substantially reach the purpose of oven dry material.

The utility model can be applied to the good many-side of chemical industry, building materials industry: can be used for the oven dry of manufacture of cement medium clay soil except the deep processing of artificial (chemistry) gypsum; The oven dry and the calcining of kaolin (particularly Coaseries kaolin); The calcining of the alum stone flour that manufacturing alum is used; Need product of drying or the like behind a lot of washings, choosing, the mill.

In addition to the implementation, the utility model can also have other embodiments.The similar double-barrel structure of all employings realizes that material can fully carry out the technology of heat exchange, and adopts other to be equal to the technical scheme of replacement or equivalent transformation formation, all drops in the protection domain of the utility model requirement.

Claims

1, a kind of novel rotary kiln, comprise cylindrical shell (1), feed part (2), discharge part (3) and running part (4), wherein feed part (2) comprises tremie pipe (7), it is characterized in that: described cylindrical shell (1) comprises inner core (5) and urceolus (6), one end of urceolus (6) is equipped with end plate (10), inner core (5) one ends are supported by inner core stay pipe (8) in urceolus (6), and inner core (5) does not link to each other with urceolus (6); The other end of inner core (5) is supported by carrying roller (9), and the strong point in one plane.

2, rotary kiln according to claim 1 is characterized in that: described inner core (5) has major part and microcephaly, forms 0,1-0,2% the gradient.

3, rotary kiln according to claim 2 is characterized in that: be provided with guider (11) in the described urceolus, make material be easy to import inner core by urceolus.

4, rotary kiln according to claim 3 is characterized in that: described guider (11) is made up of curved surface frustum (12) and dull and stereotyped (13), and frustum (12) is fixedlyed connected with dull and stereotyped (13).

5, rotary kiln according to claim 4 is characterized in that: described flat board (13) is fixedly connected on the end plate (10), and frustum (12) stretches in the inner core (5), and frustum (12) does not link to each other with inner core (5).

6, rotary kiln according to claim 1 is characterized in that: the inboard of described urceolus (6) and inner core (5) is equipped with lifting blade (14).

7, rotary kiln according to claim 6 is characterized in that: described lifting blade (14) is a curved slab.

8, rotary kiln according to claim 6 is characterized in that: described lifting blade (14) is installed in the inboard of inner core (5) and urceolus (6) by two curved-line thread path.

9, rotary kiln according to claim 1 is characterized in that: dividing plate (15) is installed in the described tremie pipe (7), increases the stroke on material decline and the thermal current.

10, rotary kiln according to claim 9 is characterized in that: described dividing plate (15) is downward-sloping, and an end is installed on two opposite side of tremie pipe (7); The other end is unsettled.