CN202403522U - Rotary kiln air feed device - Google Patents
Rotary kiln air feed device Download PDFInfo
- Publication number
- CN202403522U CN202403522U CN2011205548048U CN201120554804U CN202403522U CN 202403522 U CN202403522 U CN 202403522U CN 2011205548048 U CN2011205548048 U CN 2011205548048U CN 201120554804 U CN201120554804 U CN 201120554804U CN 202403522 U CN202403522 U CN 202403522U
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- China
- Prior art keywords
- rotary kiln
- cylinder
- air supply
- air
- ring
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- 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.)
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The utility model discloses a rotary kiln air feed device, and is designed to provide the rotary kiln air feed device which can be adapted to radial run-out caused by rotation of a rotary kiln shell and heat expansion and cold contraction of the rotary kiln shell. The rotary kiln air feed device comprises the rotary kiln shell, an air inlet hole arranged on the rotary kiln shell, an air blower and an air supply pipe with one end connected with the air blower. The rotary kiln air feed device further comprises a ring-shaped air supply barrel, two sliding sealing rings and scalable soft connecting parts, wherein the ring-shaped air supply barrel is connected with the other end of the air supply pipe, capable of relatively rotating with the rotary kiln shell and is wound on the outer side of the air inlet hole of the rotary kiln shell, the two sliding sealing rings are wound on two sides of the ring-shaped air supply barrel and the air inlet hole of the rotary kiln shell in a sealing mode and is capable of rotating relative to the rotary kiln shell, and the soft connecting parts can be connected with the air supply barrel and the sliding sealing rings on the rotary kiln shell in a sealing mode. The rotary kiln air feed device is applicable to various rotary kilns of molybdenum concentrate self-heating type roasting rotary kilns and the like.
Description
Technical field
The utility model relates to rotary kiln, especially relates to a kind of rotary kiln air supply device.
Background technology
Rotary kiln is produced continuously because of having, production capacity is big, production cost is low relatively, characteristics such as more or less freely are regulated and control in operation, is to adopt more roasting and calciner both at home and abroad.At present, all molybdenum sulfide concentrate of domestic and international application have 96% at first will change into industrial molybdenum oxide through roasting approximately, and most widely used roasting apparatus is a rotary kiln in China.In rotary kiln baking molybdenum concntrate technology; At present advanced technology is that one Chinese patent application number is 201010237892.9, and utility model is created name and is called an a kind of molybdenum concentrate self-heating roasting method and a device thereof that proposes in molybdenum concentrate self-heating roasting method and the device thereof.This technology utilization has the rotary kiln baking molybdenum concntrate of kiln body heat-exchanger rig with the manufacture molybdenum oxide; The air that roasting process utilizes the preheating of calcining molybdenum ore concentrate reaction liberated heat to be got into by kiln body heat-exchanger rig; Air after the preheating is infeeded in the rotary kiln by the discharge end of kiln hood; React with molybdenum concntrate generation roasting; And the material additional heat of taking off residual sulphur district for the rotary kiln back segment, reducing the temperature of reaction high-temperature region, rotary kiln stage casing, the calcining molybdenum ore concentrate process behind the stove of opening is fully need not the completion down of the state of outside heat supply.This utility model has solved an overheated and desulfurization later stage heat difficult problem in short supply of calcining molybdenum ore concentrate main reaction phase; And the entering of high temperature rotating housing cooling air and a hot blast discharge difficult problem, device is simple, and the heat allotment is rationally; Each section adjustment is flexible in the kiln; Do not need outer thermal source, product quality is high, and equipment yield is big.The air supply mode of rotary kiln body heat exchanger is that air blast is fixed on the cylinder of rotary kiln in this technology; And the employing slip ring power supply device is the air blast power supply; Though realized the air feed of rotary kiln body heat exchanger; But because the ajutage of air blast is rigidly connected on the cylinder of rotary kiln, make it be difficult to adapt to the circular runout that rotation causes with cylindrical shell of expanding with heat and contract with cold of cylinder of rotary kiln, cause air-supply arrangement place barrel stress very concentrated; And the refractory material of this place's cylindrical shell is come off easily, this also is to cause rotary kiln to stop the one of the main reasons of kiln accident.In addition; Because the space is limited on the cylinder of rotary kiln, satisfied not the straight length requirement of preceding ten backs five of flow instrumentation, simultaneously; Because the rotation of rotary kiln; The holding wire of instrumentation also be difficult to arrange, makes to be difficult to settle flow detector and motorized adjustment device on the air blast air supply duct, brought inconvenience to the automatic control of air feed flow detection and rotary kiln baking process.
The utility model content
The utility model is that air blast is fixed on the cylinder of rotary kiln for the air supply mode that solves prior art rotary kiln body heat exchanger; The ajutage of air blast is rigidly connected on the cylinder of rotary kiln; Make it be difficult to adapt to the circular runout that rotation causes with cylindrical shell of expanding with heat and contract with cold of cylinder of rotary kiln; Cause air-supply arrangement place barrel stress very concentrated, and the technical problem that the refractory material of this place's cylindrical shell is come off easily, a kind of rotary kiln air supply device is provided.
For solving the problems of the technologies described above; The technical scheme that the utility model adopts is a kind of rotary kiln air supply device of design; Comprise cylinder of rotary kiln, be located at the ajutage that fresh air inlet, air blast and an end on the cylinder of rotary kiln are connected with said air blast, said rotary kiln air supply device comprises that also the annular air feed tube, sealing ring that are connected with the said ajutage other end and can relatively rotate the fresh air inlet outside that is looped around said cylinder of rotary kiln with said cylinder of rotary kiln are around the fresh air inlet of said cylinder of rotary kiln and annular air feed tube both sides and two sliding rings and the be tightly connected said annular air feed tube and the telescopic soft connector of said sliding ring on cylinder of rotary kiln that can rotate relative to said cylinder of rotary kiln.
Said sliding ring comprise sealing be weldingly fixed on interior ring on the said cylinder of rotary kiln, be located in the ring outside and with said in ring can relatively rotate the outer shroud that is connected, said soft connector be sealedly connected on the said outer shroud.
The outer shroud lower end of said sliding ring is provided with and is used for the resiliency supported of the said sliding ring of resiliency supported on base surface.
Also be provided with the oil filler point that communicates with said outer shroud and interior ring junction on the outer shroud of said sliding ring.
The outer shroud of said sliding ring is made up of two semi-rings up and down, and said two semi-rings up and down compress connection through locking spring.
Said air blast is arranged on the base surface of cylinder of rotary kiln below.
Be provided with heat exchanger in the said cylinder of rotary kiln, said fresh air inlet communicates with said heat exchanger.
The lower end of said annular air feed tube also is provided with and is used to support the annular air feed tube support of annular air feed tube in base surface.
The utility model is through being provided with annular air feed tube, sliding ring and soft connector; Annular air feed tube can be rotated and soft sealing is arranged on the fresh air inlet place of said cylinder of rotary kiln relative to cylinder of rotary kiln; Thereby make ajutage no longer be rigidly connected on the cylinder of rotary kiln; And the soft connector that is connected between annular air feed tube and the sliding ring can guarantee that annular air feed tube well adapts to expanding with heat and contract with cold of cylinder of rotary kiln and cylinder of rotary kiln rotates the circular runout that causes; Can not cause the air supply position place barrel stress very concentrated, solve the prior art ajutage and be rigidly connected to the technical problem that the refractory material that causes air supply position place cylinder of rotary kiln on the cylinder of rotary kiln comes off easily.
Description of drawings
Below in conjunction with embodiment and accompanying drawing the utility model is elaborated, wherein:
Fig. 1 is the Facad structure sketch map of the utility model rotary kiln air supply device;
Among Fig. 2 Fig. 1 A to structural representation;
Fig. 3 is the partial enlarged drawing at B place among Fig. 1.
The specific embodiment
See also Fig. 1 to Fig. 3.The utility model rotary kiln air supply device comprises cylinder of rotary kiln 1, air blast 2, ajutage 3, annular air feed tube 4, annular air feed tube support 5, sliding ring 6, resiliency supported 7 and soft connector 8.Wherein:
Rotation during cylinder of rotary kiln 1 work, it is provided with fresh air inlet 11, is provided with the heat exchanger (not shown) in it, and said fresh air inlet communicates with said heat exchanger.Thereby make that getting into heat exchanger from the wind of air blast 2 through blast pipe 3, annular air feed tube 4, air admission hole 11 accomplishes heat exchange, finally gets in the rotary kiln.
Annular air feed tube 4 can relatively rotate the fresh air inlet outside that is looped around said cylinder of rotary kiln with said cylinder of rotary kiln.Annular air feed tube supports 5 and is used to support annular air feed tube in base surface.
Sliding ring 6 comprises two, and its sealing ring is around the fresh air inlet of said cylinder of rotary kiln and annular air feed tube both sides and can rotate relative to said cylinder of rotary kiln.Sliding ring 6 comprise sealing be weldingly fixed on the said cylinder of rotary kiln interior ring 61 be located in the ring outside and can relatively rotate the outer shroud 62 that is connected with said interior ring.Also be provided with the oil filler point 621 that communicates with said outer shroud and interior ring junction on the outer shroud 62 of sliding ring.The outer shroud of sliding ring is made up of two semi-rings up and down, and said two semi-rings up and down compress connection through locking spring 63.Utilize locking spring will slide up and down the sealing outer shroud and compress connection, guarantee that inner and outer ring closely contacts, clear up the radial thermal expansion distortion and the stress of cylinder of rotary kiln generation simultaneously and concentrate.
The outer shroud of sliding ring is a stationary ring; Ring and cylinder of rotary kiln welding in the sliding ring; Form rotating ring, sliding ring utilizes machining control fit clearance, and adopts the oil lubrication of being injected by oil filler point to make its resistance and play sealing function of reducing friction.
Resiliency supported 7 is arranged at the outer shroud lower end, is mainly used in the said sliding ring of resiliency supported on base surface, thereby can eliminate the influence of cylinder of rotary kiln circular runout and longitudinal tensile strain distortion.
The rotary kiln of this specific embodiment has the kiln body of long 25 ~ 30m, diameter 1.5 ~ 2m; Its afterbody is high, head is low, and the angle of inclination is 1 °; It is supported by preceding support wheel and back support wheel; It is driven through the decelerator speed change by adjustable speed motor, and the gear pair that drive is connected with rotary kiln body middle part orders about it and rotates.
The operation principle of the utility model is: air blast is installed on the basis, ground; The ajutage that is installed in blower export links to each other with annular air feed tube, annular air feed tube through be flexible coupling with the rotary kiln body on sliding ring link to each other, the outer shroud of sliding ring is a stationary ring; Ring and cylindrical shell welding in the sliding ring; Form rotating ring, sliding ring utilizes machining control fit clearance, and adopts oil lubrication to make its resistance and play sealing function of reducing friction.The air blast air feed gets into annular air feed tube through ajutage, gets into rotary kiln body heat exchanger through the fresh air inlet that is arranged on the cylinder of rotary kiln, finally gets in the rotary kiln.Sliding ring is provided with resiliency supported, and through being connected on the basis with resiliency supported, to eliminate the influence of rotary kiln body circular runout and longitudinal tensile strain distortion.Because of adopting the connected mode that is flexible coupling between sliding ring and the annular air feed tube, can eliminate the influence of rotary kiln longitudinal extension distortion fully, guarantee simultaneously to kiln body air feed.Utilize locking spring will slide up and down the sealing outer shroud and compress connection, guarantee that inner and outer ring closely contacts, clear up the radial thermal expansion distortion and the stress of cylinder of rotary kiln generation simultaneously and concentrate.Because of air blast is installed on the basis, ground, the space is abundant, and air blast and ajutage fixed-site, and various flow detectors and motorized adjustment device can be installed easily, for the automation of production process is laid a good foundation.
The utility model efficiently solve cylinder of rotary kiln stress that existing rotary kiln air supply device adopts rigid attachment to cause concentrate, expand with heat and contract with cold adaptive capacity poor, can not eliminate cylindrical shell and rotate that the circular runout, the air supply duct that cause are installed flow instrumentation and motorized adjustment device difficulty is big, Automation of Manufacturing Process realizes problems such as difficulty; The stress of having alleviated cylinder of rotary kiln air intake place is effectively concentrated; Improved the service life of cylinder of rotary kiln, and laid a good foundation for the automation of production process.The utility model can be used for the sealing of airtight air feed of molybdenum concentrate self-heating roasting rotary kiln or cylinder of rotary kiln.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (8)
1. rotary kiln air supply device; Comprise cylinder of rotary kiln, be located at fresh air inlet, air blast and an end and the ajutage that said air blast is connected on the cylinder of rotary kiln, it is characterized in that: said rotary kiln air supply device also comprises: be connected with the said ajutage other end and the annular air feed tube, sealing ring that can relatively rotate the fresh air inlet outside that is looped around said cylinder of rotary kiln with said cylinder of rotary kiln around the fresh air inlet of said cylinder of rotary kiln and annular air feed tube both sides and two sliding rings and the be tightly connected said annular air feed tube and the telescopic soft connector of said sliding ring on cylinder of rotary kiln that can rotate relative to said cylinder of rotary kiln.
2. rotary kiln air supply device according to claim 1; It is characterized in that: said sliding ring comprise sealing be weldingly fixed on interior ring on the said cylinder of rotary kiln, be located in the ring outside and with said in ring can relatively rotate the outer shroud that is connected, said soft connector be sealedly connected on the said outer shroud.
3. rotary kiln air supply device according to claim 2 is characterized in that: the outer shroud lower end of said sliding ring is provided with and is used for the resiliency supported of the said sliding ring of resiliency supported on base surface.
4. rotary kiln air supply device according to claim 2 is characterized in that: also be provided with the oil filler point that communicates with said outer shroud and interior ring junction on the outer shroud of said sliding ring.
5. rotary kiln air supply device according to claim 2 is characterized in that: the outer shroud of said sliding ring is made up of two semi-rings up and down, and said two semi-rings up and down compress connection through locking spring.
6. rotary kiln air supply device according to claim 1 is characterized in that: said air blast is arranged on the base surface of cylinder of rotary kiln below.
7. rotary kiln air supply device according to claim 1 is characterized in that: be provided with heat exchanger in the said cylinder of rotary kiln, said fresh air inlet communicates with said heat exchanger.
8. rotary kiln air supply device according to claim 1 is characterized in that: the lower end of said annular air feed tube also is provided with and is used to support the annular air feed tube support of annular air feed tube in base surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205548048U CN202403522U (en) | 2011-12-27 | 2011-12-27 | Rotary kiln air feed device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205548048U CN202403522U (en) | 2011-12-27 | 2011-12-27 | Rotary kiln air feed device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202403522U true CN202403522U (en) | 2012-08-29 |
Family
ID=46701164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205548048U Withdrawn - After Issue CN202403522U (en) | 2011-12-27 | 2011-12-27 | Rotary kiln air feed device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202403522U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564115A (en) * | 2011-12-27 | 2012-07-11 | 深圳市盛鑫源环保科技技术有限公司 | Rotary kiln air supply device |
| CN103697689A (en) * | 2013-12-26 | 2014-04-02 | 中冶长天国际工程有限责任公司 | Rotary kiln air duct system and porous rotary kiln with same |
| CN103710481A (en) * | 2013-12-03 | 2014-04-09 | 辽宁博联特冶金科技有限公司 | Secondary radial wind supply device supplying hot wind for rotary kiln |
-
2011
- 2011-12-27 CN CN2011205548048U patent/CN202403522U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564115A (en) * | 2011-12-27 | 2012-07-11 | 深圳市盛鑫源环保科技技术有限公司 | Rotary kiln air supply device |
| CN102564115B (en) * | 2011-12-27 | 2014-01-08 | 深圳市盛鑫源环保科技技术有限公司 | Rotary kiln air supply device |
| CN103710481A (en) * | 2013-12-03 | 2014-04-09 | 辽宁博联特冶金科技有限公司 | Secondary radial wind supply device supplying hot wind for rotary kiln |
| CN103710481B (en) * | 2013-12-03 | 2015-10-21 | 辽宁博联特冶金科技有限公司 | A kind ofly provide the secondary of hot blast radial air supply device for rotary kiln |
| CN103697689A (en) * | 2013-12-26 | 2014-04-02 | 中冶长天国际工程有限责任公司 | Rotary kiln air duct system and porous rotary kiln with same |
| CN103697689B (en) * | 2013-12-26 | 2015-12-09 | 中冶长天国际工程有限责任公司 | Rotary kiln ducting system and there is the porous rotary kiln of this ducting system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120829 Effective date of abandoning: 20140108 |
|
| RGAV | Abandon patent right to avoid regrant |