CN203148197U - Feeding device for rotary kiln - Google Patents
Feeding device for rotary kiln Download PDFInfo
- Publication number
- CN203148197U CN203148197U CN 201220742795 CN201220742795U CN203148197U CN 203148197 U CN203148197 U CN 203148197U CN 201220742795 CN201220742795 CN 201220742795 CN 201220742795 U CN201220742795 U CN 201220742795U CN 203148197 U CN203148197 U CN 203148197U
- Authority
- CN
- China
- Prior art keywords
- tremie pipe
- flexible
- helical spring
- rotary kiln
- discharger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 claims abstract description 32
- 238000007599 discharging Methods 0.000 claims description 28
- 238000007790 scraping Methods 0.000 claims description 5
- 230000008602 contraction Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- 239000011345 viscous material Substances 0.000 description 5
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 208000028659 discharge Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The utility model relates to a feeding device for a rotary kiln. The feeding device comprises a storage bin and at least one flexible discharger, wherein the flexible discharger comprises a blanking pipe, a spiral spring and a drive device; the blanking pipe is arranged in an inclining manner; the spiral spring is coaxially arranged along the blanking pipe; the drive device is arranged outside the blanking device; the upper end of the spiral spring is close to the top of the blanking pipe and fixedly connected with the rotation part of the drive device through a rotation shaft; and the storage bin is communicated with the pipe wall of the blanking pipe through a blanking port formed in the lower end of the storage bin. According to the feeding device for the rotary kiln, the flexible discharger is used for feeding; in a feeding process, the drive device drives the spiral spring to rotate, so that material is uniformly distributed; the rotating spiral spring drives the material to enter the rotary kiln from a discharge port of the blanking pipe, so that the blanking is stable, and the feeding device is maintained to be smooth; and at the same time, the flexible discharger is simple in structure and convenient to maintain.
Description
Technical field
The utility model relates to a kind of rotary kiln drawing-in device.
Background technology
Rotary kiln is one of calciner commonly used at present.When adopting rotary kiln that material is calcined, need stablize in the rotary kiln, continual feeding.For loose unpacked material, it generally is to feed the rotary kiln afterbody by the tremie pipe that tilts by the gravity effect; But for viscous material, such as producing in the process of aluminium oxide at flyash " sour molten method of a step ", the crystal aluminum chloride of producing is calcined, after the crystal aluminum chloride that contains the 4-5% attached water meets with the flue gas that seals in tremie pipe from the kiln tail, material becomes sticky, be bonded on the tube wall, cause the drawing-in device frequent jams.Can cause rotary kiln feed instability so on the one hand, can not normally move; Need to strengthen the intensity of manually disclosing material on the other hand.Owing to from the flue gas that tremie pipe is gone here and there, contain HCL gas, can cause disclosing the material personnel in the time of serious and poison.
The utility model content
In view of this, the purpose of this utility model is to provide a kind of rotary kiln drawing-in device, to solve the problem of the drawing-in device obstruction that drawing-in device exists in the prior art when carrying viscous material, realizes the stable feeding that continues.
The rotary kiln drawing-in device that the utility model provides comprises feed bin and at least one flexible discharger, described flexible discharger comprises the tremie pipe that is obliquely installed, is axially disposed within helical spring in the tremie pipe along described tremie pipe, with the drive unit that is arranged on outside the described tremie pipe, described helical spring upper end is near the top of described tremie pipe, and fixedly connected with the rotation section of described drive unit by turning cylinder, described feed bin is communicated with the tube wall of described tremie pipe by the feed opening that is arranged on its lower end.
According to drawing-in device of the present utility model, preferably, the difference of the internal diameter of described helical spring external diameter and tremie pipe is less than 50mm; Further preferably, the difference of the internal diameter of described helical spring external diameter and tremie pipe is less than 30mm,
According to drawing-in device of the present utility model, preferably, described helical spring lower end has the diameter of contraction, and namely the diameter of described helical spring lower end reduces, and stretches out the discharging opening of described tremie pipe; Further preferably, be decreased to below 2/3 of described helical spring average diameter, the length of stretching out discharging opening is 5-10mm.
According to drawing-in device of the present utility model, preferably, described feed opening is horn-like, and diameter progressively increases from top to bottom.
According to drawing-in device of the present utility model, preferably, the sidewall of described feed opening is provided with the clean-up port.
According to drawing-in device of the present utility model, preferably, the discharging opening of described tremie pipe is arranged in the rotary kiln, and the distance between the kiln tail sidewall of described discharging opening and its below progressively increases to the direction of kiln hood at the kiln tail of rotary kiln; Further preferably, the cross section at described discharging opening place and the angle of rotary kiln central shaft are 10-30 ℃.
According to drawing-in device of the present utility model, preferably, the outer wall of described discharging opening is provided with downward material scraping plate; Particularly, an end of described material scraping plate is fixed on the outer wall of discharging opening, and the other end is the sidewall of close rotary kiln downwards.
According to drawing-in device of the present utility model, preferably, also be provided with air inlet on the described tremie pipe; Further preferably, described air inlet is axially disposed within the turning cylinder along described turning cylinder, and namely described turning cylinder is made as hollow-core construction, can be used as air inlet simultaneously.Described air inlet is used for introducing compressed air in tremie pipe, prevents from scurrying on the flue gas in the kiln.
According to drawing-in device of the present utility model, preferably, described drawing-in device comprises two flexible dischargers, be respectively the flexible discharger of one-level and the flexible discharger of secondary, wherein said feed bin is communicated with the tube wall of the one-level tremie pipe of the flexible discharger of described one-level by the one-level feed opening that is arranged on its lower end, and described one-level tremie pipe is communicated with the tube wall of the secondary tremie pipe of the flexible discharger of described secondary by the secondary feed opening that is arranged on its lower end.
Drawing-in device of the present utility model adopts flexible discharger to carry out feeding, and in feeding procedure, drive unit drives helical spring and rotates, and material is uniformly dispersed, and the discharging opening from tremie pipe enters in the rotary kiln under the helical spring drive of rotating.Compare with prior art, adopt drawing-in device described in the utility model, material is difficult for resulting in blockage, and blanking is stable; Flexible discharger is simple in structure, easy to maintenance; Significantly reduce labor strength simultaneously, avoid the generation of poisoning, greatly improved on-the-spot working environment.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of drawing-in device of the present utility model;
Fig. 2 is the structural representation of the another kind of embodiment of drawing-in device of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is elaborated, it should be understood that the layout of details that the utility model is not limited in its application to propose in the following description or illustrative structure in the accompanying drawings and assembly.
The utility model provides a kind of rotary kiln drawing-in device, especially viscous material can be sent into the drawing-in device of rotary kiln.
Fig. 1 illustration a kind of embodiment of drawing-in device of the present utility model, described drawing-in device comprises feed bin 1 and flexible discharger 2, described flexible discharger 2 comprises tremie pipe 21, helical spring 22 and drive unit 23, described tremie pipe 21 is obliquely installed, described helical spring 22 is along in the described tremie pipe 21 of being axially disposed within of tremie pipe 21, its upper end (being the end that described helical spring 22 is tilted to) is near the top of described tremie pipe 21, and fixedly connected with the rotation section of drive unit 23 by turning cylinder 4, concrete connected mode is known in the art, fixedly connected with an end of described turning cylinder 4 in upper end such as described helical spring 22, the other end of described turning cylinder 4 is fixed on the rotation section of drive unit 23, so that described helical spring 22 can rotate in tremie pipe 21 under the drive of described drive unit 23.The lower end of described feed bin 1 is provided with feed opening 3, and described feed opening 3 is communicated with the tube wall of described tremie pipe 21, and the material in the feed bin 1 can be entered in the tremie pipe 21.
In drawing-in device of the present utility model, material in the feed bin 1 enters in the tremie pipe 21 by feed opening 3, helical spring 22 is rotating in tremie pipe 21 under the effect of drive unit 23, because the lasting rotation of helical spring 22, make material be uniformly dispersed, and the discharging opening 24 from tremie pipe 21 enter in the rotary kiln 5 under the drive of the helical spring 22 that rotates.
Continuation is referring to Fig. 1, and preferably, described feed opening 3 is horn-like, and its diameter from top to bottom progressively increases, and material is difficult for running into the sidewall of feed opening 3 in dropping process like this, can reduce material to the adhesion of feed opening 3, keeps feed opening 3 unimpeded.In addition, for the ease of feed opening 3 is cleared up, preferably, on the sidewall of described feed opening 3, also be provided with clean-up port 31.
In helical spring 22 rotating process, if the excesssive gap between the tube wall of helical spring 22 and tremie pipe 21, described helical spring 22 is swung easily, may cause helical spring 22 fatigue fractures, the diameter that reduces between described helical spring 22 and the tremie pipe 21 that therefore should be suitable is poor.Preferably, the difference of the internal diameter of the external diameter of described helical spring 22 and tremie pipe 21 is less than 50mm; Further preferably, the difference of the internal diameter of the external diameter of described helical spring 22 and tremie pipe 21 guaranteeing that described helical spring 22 can rotate smoothly in tremie pipe 21 when, has less amplitude of fluctuation less than 30mm.Yet, along with helical spring 22 diameters increase, its lower end (being the end under described helical spring 22 is tilted to) tangle the also corresponding increase of possibility of described tremie pipe 21 tube walls by the place, in case tangle, may cause helical spring 22 torsional deformations, even twisted into two parts, therefore, preferably, the lower end of described helical spring 22 has the diameter of contraction, the diameter that is described helical spring 22 lower ends reduces, and for example is decreased to below 2/3 of described helical spring 22 average diameters.In addition, the discharging opening 24 of described tremie pipe 2 is preferably stretched out in the lower end of described helical spring 22, and further preferably, its length of stretching out discharging opening 24 is 5-10mm, can prevent clogged up with material discharging opening 24 effectively.
The discharging opening 24 of described tremie pipe 21 is positioned at the kiln tail 5 of rotary kiln, and arranges downwards, and the material that comes out from described discharging opening 24 drops on the sidewall of rotary kiln 5, owing to adopt described flexible discharger 2, material is more even when entering kiln tail 5.Yet, for viscous material, when operating mode is unstable, still may forms at discharging opening 24 and block.Therefore, preferably, described discharging opening 24 is arranged in the rotary kiln 5, and the distance between the kiln tail sidewall of described discharging opening and its below progressively increases to the direction of kiln hood (not shown) at the kiln tail of rotary kiln; Further preferably, the cross section at described discharging opening place and the angle of rotary kiln central shaft are 10-30 ℃, adopt this design, distance between the kiln wall of discharging opening 24 and rotary kiln 5 is progressively increased to the direction of kiln hood at kiln tail 5, be conducive to material and shift from kiln tail 5 to kiln hood, further reduce the obstruction to discharging opening 24.
For drawing-in device, prevent that clogged up with material from being the importance that designing institute will be considered, particularly when carrying viscous material.Therefore, preferably, on the outer wall of described discharging opening 24, also be provided with downward material scraping plate 25, particularly, an end of described material scraping plate 25 is fixed on the outer wall of discharging opening 24, and its fixed form can be welded fixing, or bolting etc., the other end is near the sidewall of rotary kiln 5, the material that is deposited in below the discharging opening 24 can be struck off in the rotary kiln rotating process, and it is uniformly dispersed.
Consider that flue gas is scurried easily in the rotary kiln on tremie pipe 21, cause material to become sticky, preferably, the upper end of described tremie pipe 21 also is provided with the air inlet (not shown), can be used for introducing the compressed air that purges, and reduces on the flue gas and scurries; Further preferably, described turning cylinder 4 is made as hollow-core construction, can be used as air inlet simultaneously.
In flexible discharger 2 of the present utility model, mainly be to rely on helical spring 22 to realize material dispersed and propelling, make that helical spring 22 is stressed bigger.Because helical spring 22 length are longer, easy deformation behind long-play, even fatigue fracture takes place.Therefore, as shown in Figure 2, of the present utility model another preferred embodiment in, described drawing-in device comprises two flexible dischargers, be respectively the flexible discharger 2a of one-level and the flexible discharger 2b of secondary, wherein said feed bin 1 is communicated with the tube wall of the one-level tremie pipe 21a of the flexible discharger 2a of described one-level by the one-level feed opening 3a that is arranged on its lower end, and the lower end of described one-level tremie pipe 21a is communicated with the tube wall of the secondary tremie pipe 21b of the flexible discharger 2b of described secondary by secondary feed opening 3b.By the flexible discharger 2a of two-stage, 2b are set, reduced the spring length of each flexible discharger, reduced the requirement to the spring material, prolonged the service life of spring.
Obviously, above-mentioned preferred version to feed opening 3, helical spring 22 and discharging opening 24 etc. is applicable to that too described drawing-in device comprises the embodiment of the flexible discharger 2a of two-stage, 2b.For example, described one-level feed opening 3a and/or secondary feed opening 3b are preferably horn-like, and the upper end of described one-level tremie pipe 21a and/or secondary tremie pipe 21b preferably is provided with air inlet.
For the drawing-in device that is provided with the flexible discharger 2a of two-stage, 2b, during operation, material enters the flexible discharger 2a of one-level from feed bin 1 by one-level feed opening 3a, under the effect that one-level helical spring 22a rotates, material is disperseed, evenly promotes forward, when material arrives the lower end of one-level tremie pipe 21a, enter the flexible discharger 2b of secondary by secondary feed opening 3b, under the effect of deuterostrophies spring 22b in the flexible discharger 2b of secondary, material evenly is pushed in the rotary kiln 5.
Preferably, among the flexible discharger 2b of secondary the rotating speed of deuterostrophies spring 22b greater than the rotating speed of one-level helical spring 22a among the flexible discharger 2a of one-level; Further preferably, the fast 10-30r/min of rotating speed of one-level helical spring 22a among the flexible discharger 2a of the described one-level of rotating ratio of deuterostrophies spring 22b among the flexible discharger 2b of described secondary, make the flexible discharger 2b of secondary discharge rate greater than the flexible discharger 2a of one-level, unimpeded to guarantee whole drawing-in device.Simultaneously, preferably, under the flexible discharger 2b of secondary broke down situation out of service, flexible discharger 2a was also out of service under the effect that stops interlock protection device for one-level, guarantees that drawing-in device does not block.For the drawing-in device that is provided with the flexible discharger 2a of two-stage, 2b, when starting, at first start the flexible discharger 2b of secondary, and then start the flexible discharger 2a of one-level; When stopping, at first closing down the flexible discharger 2a of one-level, and then close down the flexible discharger 2b of secondary.
Under enlightenment of the present utility model, those of ordinary skills are easy to expect that described drawing-in device can also comprise more flexible dischargers, for more flexible dischargers, its annexation each other is identical with the connection essence of two flexible dischargers, repeats no more here.In addition, drawing-in device of the present utility model is equally applicable to be other device or equipment feed.
Claims (10)
1. rotary kiln drawing-in device, it is characterized in that, described drawing-in device comprises feed bin and at least one flexible discharger, described flexible discharger comprises the tremie pipe that is obliquely installed, along the helical spring in the tremie pipe of being axially disposed within of described tremie pipe, and be arranged on the outer drive unit of described tremie pipe, described helical spring upper end is near the top of described tremie pipe, and fixedly connected with the rotation section of described drive unit by turning cylinder, described feed bin is communicated with the tube wall of described tremie pipe by the feed opening that is arranged on its lower end.
2. drawing-in device as claimed in claim 1 is characterized in that, the difference of the internal diameter of described helical spring external diameter and tremie pipe is less than 50mm.
3. drawing-in device as claimed in claim 2 is characterized in that, described helical spring lower end has the diameter of contraction, and stretches out the discharging opening of described tremie pipe.
4. drawing-in device as claimed in claim 3 is characterized in that, described feed opening is horn-like, and diameter progressively increases from top to bottom.
5. drawing-in device as claimed in claim 4 is characterized in that, the sidewall of described feed opening is provided with the clean-up port.
6. drawing-in device as claimed in claim 5 is characterized in that, the discharging opening of described tremie pipe is arranged in the rotary kiln, and the distance between the kiln tail sidewall of described discharging opening and its below progressively increases to the direction of kiln hood at the kiln tail of rotary kiln.
7. drawing-in device as claimed in claim 6 is characterized in that, the outer wall of described discharging opening is provided with downward material scraping plate.
8. drawing-in device as claimed in claim 7 is characterized in that, also is provided with air inlet on the described tremie pipe.
9. drawing-in device as claimed in claim 8 is characterized in that, described air inlet is axially disposed within the turning cylinder along described turning cylinder.
10. as each described drawing-in device among the claim 1-9, it is characterized in that, described drawing-in device comprises two flexible dischargers, be respectively the flexible discharger of one-level and the flexible discharger of secondary, wherein said feed bin is communicated with the tube wall of the one-level tremie pipe of the flexible discharger of described one-level by the one-level feed opening that is arranged on its lower end, and described one-level tremie pipe is communicated with the tube wall of the secondary tremie pipe of the flexible discharger of described secondary by the secondary feed opening that is arranged on its lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220742795 CN203148197U (en) | 2012-12-28 | 2012-12-28 | Feeding device for rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220742795 CN203148197U (en) | 2012-12-28 | 2012-12-28 | Feeding device for rotary kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203148197U true CN203148197U (en) | 2013-08-21 |
Family
ID=48975714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220742795 Expired - Lifetime CN203148197U (en) | 2012-12-28 | 2012-12-28 | Feeding device for rotary kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203148197U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115486A (en) * | 2012-12-28 | 2013-05-22 | 中国神华能源股份有限公司 | Rotary kiln material feeding device and rotary kiln material feeding method |
| CN103486849A (en) * | 2013-09-06 | 2014-01-01 | 内蒙古工业大学 | Variable-atmosphere cement clinker calcination rotary kiln testing equipment |
| CN104773719A (en) * | 2015-04-09 | 2015-07-15 | 河南师范大学 | Rotary reaction furnace for continuously preparing carbon nano tube on large scale |
| CN107930561A (en) * | 2017-12-21 | 2018-04-20 | 宁夏宝马药业有限公司 | Charging device under lime nitrogen liquid |
-
2012
- 2012-12-28 CN CN 201220742795 patent/CN203148197U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115486A (en) * | 2012-12-28 | 2013-05-22 | 中国神华能源股份有限公司 | Rotary kiln material feeding device and rotary kiln material feeding method |
| CN103115486B (en) * | 2012-12-28 | 2015-06-17 | 中国神华能源股份有限公司 | Rotary kiln material feeding device and rotary kiln material feeding method |
| CN103486849A (en) * | 2013-09-06 | 2014-01-01 | 内蒙古工业大学 | Variable-atmosphere cement clinker calcination rotary kiln testing equipment |
| CN103486849B (en) * | 2013-09-06 | 2015-11-18 | 内蒙古工业大学 | A kind of variable-atmosphere burning clinker of cement rotary kiln testing equipment |
| CN104773719A (en) * | 2015-04-09 | 2015-07-15 | 河南师范大学 | Rotary reaction furnace for continuously preparing carbon nano tube on large scale |
| CN104773719B (en) * | 2015-04-09 | 2016-11-09 | 河南师范大学 | One prepares CNT rotary reaction furnace continuously on a large scale |
| CN107930561A (en) * | 2017-12-21 | 2018-04-20 | 宁夏宝马药业有限公司 | Charging device under lime nitrogen liquid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130821 |
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| CX01 | Expiry of patent term |