CN201317787Y - High temperature material transporting auger - Google Patents
High temperature material transporting auger Download PDFInfo
- Publication number
- CN201317787Y CN201317787Y CNU200820227259XU CN200820227259U CN201317787Y CN 201317787 Y CN201317787 Y CN 201317787Y CN U200820227259X U CNU200820227259X U CN U200820227259XU CN 200820227259 U CN200820227259 U CN 200820227259U CN 201317787 Y CN201317787 Y CN 201317787Y
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- main shaft
- cooling
- water
- blade
- screw
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Abstract
The utility model relates to a high temperature material transporting auger, which comprises a main shaft and a helical blade which is fixed on the outer side of the main shaft, wherein the main shaft is a double-casing hollow shaft, the integrated body of a main shaft outer casing and the helical blade is made by surfacing technology, a main water inlet pipe is arranged in a main shaft inner casing, a main shaft cooling backwater channel is arranged between two casings, a hollow water cooling groove is arranged in the helical blade along the surface of the main shaft outer casing, an outlet end of the main water inlet pipe is equipped with a shunt device, cooling water is divided into two ways by the shunt device and respectively enters the main shaft cooling backwater channel and the hollow water cooling groove of the helical blade, and the two ways of cooling backwater is converged and discharged from a water outlet of the main shaft cooling backwater channel. The high temperature material transporting auger has reasonable structure, excellent water cooling effect, large effective work area of blades, high anti-wear property and high discharging work efficiency, fully plays the dual advantages of materials and structures, and has long service life.
Description
Technical field
The utility model relates to a kind of device for transporting objects, specifically a kind of high-temperature material handling spiral.It is applicable to makes annular rotary hearth furnace discharging spiral.
Background technology
We know that in recent years, China's iron and steel output speedup is swift and violent, and the steel equipment trend maximizes.Promoted on the one hand fast development of national economy, on the other hand also power consumption and environmental pollution two large problems put common people in face of.For environmental protection with energy-saving and cost-reducing consider, eighties of last century seventies, the U.S. takes the lead in initiating the direct reductive ironmaking of the annular rotary hearth furnace heating of research carbonaceous pelletizing new technology, and China has also started this Study on Technology work the nineties in eighties of last century.This technology and blast furnace ironmaking flow process are relatively; coking and sintering two big process procedures have been saved; can improve energy utilization rate, reduce product energy consumption, make ton steel cost that by a relatively large margin decline be arranged, to environment protection, improve the energy structure of Iron And Steel Industry and promote economic benefit positive pushing effect is all arranged.
The characteristics of annular rotary hearth furnace direct reduction iron making technology are: roasting time is short, mechanization degree is high, therefore must supporting special feed and discharging equipment.Wherein very harsh to the requirement of discharging equipment, reason is through the metallized pellet temperature very high (about 1200 ℃) that produces behind the roasting reduction, is easy to from newly oxidized, therefore requires continuous, quickly discharging.One of key equipment of annular rotary hearth furnace discharging is exactly the discharging spiral.Facts have proved that the main failure forms of discharging spiral is the abrasive wear under the hot environment, the subject matter of existence is to use the life-span short.With regard to the work-ing life of discharging spiral, at present Germany is about 6 months at life-span of making, and the Americanized life-span is about 3 months, and the of home make life-span is less than 1 month then.
The scheme that domestic present manufacturing rotary hearth furnace discharging spiral adopts mainly is two sleeve water coolings.I.e. water inlet, water outlet finished in same termination.Another program is the single tube water cooling.I.e. end water inlet, the other end water outlet.They all are only the axle body to be cooled off, and blade then is an indirect water-cooling.In order to improve the indirect water-cooling effect to blade as much as possible, people often obtain the ratio of screw shaft diameter d and spiral outer diameter D bigger, d/D＞0.6.Because the d/D puopulsion efficiency that causes bigger than normal problem on the low side adopts the bull blade, to be generally the 4-6 stature in order remedying,, so just to increase the blade manufacture difficulty greatly to improve the working efficiency of discharging spiral.
Summary of the invention
Technical problem to be solved in the utility model is to overcome above-mentioned the deficiencies in the prior art, provides a kind of structure reasonable, good water cooling effect, the effective working area of blade is big, the abrasion resistance properties height, discharging high efficiency, the high-temperature material handling spiral of long service life.
The technical scheme in the invention for solving the above technical problem is: a kind of high-temperature material handling spiral, it includes main shaft and is fixed on the screw-blade in the main shaft outside, main shaft is two sleeve pipe tubular shafts, it is characterized in that: spindle jacket pipe and screw-blade integral body are made by technique for overlaying, be provided with main water inlet tube in the main shaft inner sleeve, it between two sleeve pipes main shaft cooling backwater passage, be provided with hollow water-cooling groove along the spindle jacket tube-surface in the screw-blade, the exit end of main water inlet tube is provided with part flow arrangement, water coolant is divided into two-way, enter respectively in the hollow water-cooling groove of main shaft cooling backwater passage and screw-blade, the two-way cooling backwater converges discharge at the water outlet of main shaft cooling backwater passage.
Be provided with dividing plate in the said main shaft cooling backwater of the utility model passage, it plays current deflecting and speed regulating and controlling effect.
The hollow water-cooling groove cross section of the said screw-blade of the utility model is square type or trapezoidal.
Be welded with two groups or three groups of screw-blades on the utility model main shaft.It has reduced blade head number, greatly reduces the processing and manufacturing difficulty.
The utility model uses high temperature and abrasive-particle wear resistant build-up welding alloy material that screw-blade and main shaft surface are implemented built-up welding, in order to the wearing and tearing of opposing from the hot metal pellet.The high temperature and abrasive-particle wear resistant build-up welding alloy material that build-up welding alloy material adopts ZL011352310 to propose, it is mainly the high carbon and chromium resurfacing welding material, utilize the metal carbon-boron compound has in the alloy high rigidity and wear-resistant grain polishing machine and anti-capacity of decomposition, improve the wear-resistant grain polishing machine under the hot conditions.The utility model divides two-way to carry out water-cooled, one tunnel cooling main shaft body, another road cooling spiral blade.Against existing technologies, the utility model structure is reasonable, good water cooling effect, and the effective working area of blade is big, abrasion resistance properties height, discharging high efficiency, long service life.It gives full play to material and structure double dominant, the work-ing life of the product of Ti Gaoing to greatest extent.
Description of drawings
The utility model will be further described below in conjunction with drawings and Examples:
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the A-A schematic cross-section of Fig. 1.
Fig. 3 is the I portion enlarged diagram of Fig. 1.
1. main shafts among the figure, 2. screw-blade, 3. outer tube, 4. inner sleeve, 5. main water inlet tube, 6. main shaft cooling backwater passage, 7. hollow water-cooling groove, 8. part flow arrangement, 9. dividing plate.
Embodiment
From Fig. 1, Fig. 2, Fig. 3 as can be seen, a kind of high-temperature material handling spiral of the utility model, it includes main shaft 1 and is weldingly fixed on some conveyor screw blades 2 in the main shaft outside, screw-blade 2 is structure as a whole with main shaft 1.The utility model main shaft 1 is two sleeve pipe tubular shafts, and spindle jacket pipe 3 and screw-blade 2 integral body are made by technique for overlaying.The utility model uses high temperature and abrasive-particle wear resistant build-up welding alloy material that screw-blade 2 and main shaft 1 surface are implemented built-up welding, in order to the wearing and tearing of opposing from the hot metal pellet.The used high temperature and abrasive-particle wear resistant build-up welding alloy material of the utility model is Chinese patent 011352310 a disclosed build-up welding alloy material, it is mainly the high carbon and chromium resurfacing welding material, utilize the metal carbon-boron compound has in the alloy high rigidity and wear-resistant grain polishing machine and anti-capacity of decomposition, improve the wear-resistant grain polishing machine under the hot conditions.Its concrete content (weight %) of forming is: C 1-5, Cr 10-30, Mo 2-12, W 1-8, Nb 2-15, V 1-5, B 1-6, rare earth 0.01-2, surplus Fe.Rare earth can be selected compound or the alloy of cerium Ce, praseodymium Pr, yttrium Y etc. for use.This material has good high temperature and abrasive-particle wear resistant performance, and it can realize higher hot hardness and wear resistance.
Being provided with in the utility model main shaft inner sleeve 4 between main water inlet tube 5, two sleeve pipes is main shaft cooling backwater passage 6, is provided with hollow water-cooling groove 7 along spindle jacket pipe 3 surfaces in the screw-blade 2, and it also is the cooling-water duct of blade.The exit end of main water inlet tube is provided with part flow arrangement 8, and water coolant is divided into two-way, and one the tunnel passes main shaft cooling-water duct 6 enters the hollow water-cooling groove 7 of corresponding screw-blade, i.e. blade cooling-water duct, and another road directly enters main shaft body cooling-water duct.The part flow arrangement 8 of the exit end of the utility model main water inlet tube is communicated with main shaft cooling backwater passage 6 and the corresponding hollow water-cooling groove 7 of screw-blade respectively.The water outlet of the water-in of main water inlet tube 5 and main shaft cooling backwater passage 6 is at the same end of conveyor screw, and the water-in of the water outlet of main water inlet tube 5 and main shaft cooling backwater passage 6 is at the other end of conveyor screw, and promptly total water inlet, water outlet are finished in same termination.The cooling backwater of main shaft cooling backwater passage 6 and the corresponding hollow water-cooling groove 7 of screw-blade converges discharge at the water outlet of main shaft cooling backwater passage.The utility model divides two-way to carry out water-cooled, one tunnel cooling main shaft body, take away heat by water coolant and reduce the main shaft body temperature, thereby reduce hot strength and creep-resistant property requirement to structured material, available common high temperature steel substitutes such as noble metal materials such as Cr25Ni20, reduces material cost.Another road is divided some groups again, cools off each corresponding screw-blade respectively.Directly take away heat by water coolant and reduce leaf temperature, reduce hot strength and creep-resistant property requirement on the one hand, give full play to the abrasion resistance properties of blade surface weld overlay materials on the other hand, realize the high life blade mother metal material.Respectively axle body and blade are carried out effective water-cooled respectively by two paths, the reduction temperature is given full play to material advantage to the detrimentally affect of the wear-resistant ability of the intensity of structured material and high-abrasive material, improves the work-ing life of discharging spiral to greatest extent.
Hollow water-cooling groove 7 cross sections of the said screw-blade 2 of the utility model are square type or trapezoidal.Be that the blade cooling-water duct is square type or trapezoidal hollow section, as Fig. 2, shown in Figure 3.Hollow type screw-blade structure can effectively improve screw-blade rigidity, can reduce the ratio of screw shaft diameter d and spiral outer diameter D, increases screw-blade height and effective working area, improves the working efficiency of discharging spiral.Be welded with two groups or three groups of screw-blades on the utility model main shaft, it has reduced screw-blade head number, greatly reduces the processing and manufacturing difficulty.
Be provided with dividing plate 9 in the said main shaft cooling backwater of the utility model passage 6, it plays current deflecting and speed regulation and control.Concrete path clearance of the utility model and regulation and control lead of screw are calculated according to the design flow velocity and are obtained.
Claims (4)
1. high-temperature material handling spiral, it includes main shaft and is fixed on the screw-blade in the main shaft outside, main shaft is two sleeve pipe tubular shafts, it is characterized in that: spindle jacket pipe and screw-blade integral body are made by technique for overlaying, be provided with main water inlet tube in the main shaft inner sleeve, it between two sleeve pipes main shaft cooling backwater passage, be provided with hollow water-cooling groove along the spindle jacket tube-surface in the screw-blade, the exit end of main water inlet tube is provided with part flow arrangement, water coolant is divided into two-way, enter respectively in the hollow water-cooling groove of main shaft cooling backwater passage and screw-blade, the two-way cooling backwater converges discharge at the water outlet of main shaft cooling backwater passage.
2. high-temperature material handling spiral according to claim 1 is characterized in that: be provided with dividing plate in the said main shaft cooling backwater passage.
3. high-temperature material handling spiral according to claim 1 is characterized in that: the hollow water-cooling groove cross section of said screw-blade is square type or trapezoidal.
4. high-temperature material handling spiral according to claim 1 is characterized in that: be welded with two groups or three groups of screw-blades on the said main shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820227259XU CN201317787Y (en) | 2008-12-17 | 2008-12-17 | High temperature material transporting auger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820227259XU CN201317787Y (en) | 2008-12-17 | 2008-12-17 | High temperature material transporting auger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201317787Y true CN201317787Y (en) | 2009-09-30 |
Family
ID=41196556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820227259XU Expired - Fee Related CN201317787Y (en) | 2008-12-17 | 2008-12-17 | High temperature material transporting auger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201317787Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102139800A (en) * | 2011-02-25 | 2011-08-03 | 秦皇岛西重所燕大重型机械研究院有限公司 | High temperature-keeping screw conveyor |
| CN107364692A (en) * | 2016-05-13 | 2017-11-21 | 神华集团有限责任公司 | Conveying worm |
| CN114701813A (en) * | 2022-03-28 | 2022-07-05 | 浙江天新智能研究院有限公司 | Assembled blade structure for screw conveyor |
| CN116441340A (en) * | 2023-04-26 | 2023-07-18 | 唐山曹妃甸区通鑫再生资源回收利用有限公司 | Hot-pressed iron block manufacturing device and manufacturing method thereof |
-
2008
- 2008-12-17 CN CNU200820227259XU patent/CN201317787Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102139800A (en) * | 2011-02-25 | 2011-08-03 | 秦皇岛西重所燕大重型机械研究院有限公司 | High temperature-keeping screw conveyor |
| CN107364692A (en) * | 2016-05-13 | 2017-11-21 | 神华集团有限责任公司 | Conveying worm |
| CN107364692B (en) * | 2016-05-13 | 2019-04-02 | 神华集团有限责任公司 | Screw conveyor |
| CN114701813A (en) * | 2022-03-28 | 2022-07-05 | 浙江天新智能研究院有限公司 | Assembled blade structure for screw conveyor |
| CN116441340A (en) * | 2023-04-26 | 2023-07-18 | 唐山曹妃甸区通鑫再生资源回收利用有限公司 | Hot-pressed iron block manufacturing device and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090930 Termination date: 20121217 |