CN202105687U - Medium-speed roller type coal grinding machine - Google Patents
Medium-speed roller type coal grinding machine Download PDFInfo
- Publication number
- CN202105687U CN202105687U CN2011202086865U CN201120208686U CN202105687U CN 202105687 U CN202105687 U CN 202105687U CN 2011202086865 U CN2011202086865 U CN 2011202086865U CN 201120208686 U CN201120208686 U CN 201120208686U CN 202105687 U CN202105687 U CN 202105687U
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- China
- Prior art keywords
- pallet
- ring
- blade
- bull
- roller ring
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- Expired - Fee Related
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Abstract
The utility model discloses a medium-speed roller type coal grinding machine, which comprises a grinding device and a coal delivery device used for supplying raw coal for a grinding portion. The grinding portion comprises a grinding ring pallet and spraying nozzle blades distributed in the circumferential direction of the grinding ring pallet, the spraying nozzle blades are fixedly installed on the grinding ring pallet through connection pieces, and the grinding ring pallet is a column face structure. The medium-speed roller type coal grinding machine has better ventilation effects.
Description
Technical field
The utility model relates to a kind of roller ring mill.
Background technology
Known roller ring mill, its part of milling mainly is made up of the bull ring that rotates and three grinding rollers along circumferentially even assembling of bull ring and rotation.Need the raw coal of grinding to fall on the bull ring in the use from the central coal spout of coal pulverizer; The bull ring of rotation moves to raw coal on the mill disc raceway by centrifugal force; Mill through grinding roller; The power of milling is then produced on three grinding rollers of stepless action by hydraulic loading system, and this power reaches the basis through base plate behind bull ring, grinding roller, pressure frame, pull bar, drive plate, reductor, hydraulic cylinder.Mill and the drying of raw coal are carried out simultaneously; Wind evenly gets into around the bull ring through nozzle ring; To advance the to mill tangential throws away from the bull ring coal dust intermixture oven dry and be delivered to the separator on coal pulverizer top; In separator, separate, meal is separated and returns bull ring and reface, and it is finished product that qualified fine powder is taken out of separator by a wind.
Original roll-type coal pulverizer like the ZGM coal pulverizer, is that nozzle vane and bull ring pallet ring on the rotating ring is cast in block with reference to the rotating ring structure 3 on Figure of description 1 and 2 its bull rings, follows the mill rotation, and one time wind passes through from nozzle ring.But bull ring pallet outer lower portion has a tapering, and the nozzle vane rate of wear is very fast, changes nozzle vane separately and must change the bull ring pallet simultaneously, and the tapering of the outer downside of bull ring pallet is unfavorable for that a wind passes through, and is prone to cause malleation simultaneously.If scum mouth malleation is serious, must contaminated environment, the scum amount is very big, and basically at 1.5-2.0t/h, and the cinder that spues can only be used as the cement mixture admixture, and waste is serious.
On the other hand, casting integrated structures shape itself if a certain funtion part lost efficacy, must cause the inefficacy of whole parts, caused a large amount of spare parts consumptions, whole cost is than higher.
In view of this; Those skilled in the art thinks owing to bull ring, grinding roller, mill wear liner make the draught area increase; The ability drop of milling, based on this kind consideration, when maintenance, take following measure: the steel plate with three homalographics is uniformly distributed with the nozzle ring spout place that is welded in three grinding roller rear sides; The moderate reduction draught area improves wind speed; To mill liner plate, the online Repair Welding of mill roll sleeve, promote the ability of milling.Promote limitedly during grinding machine platform after handling through maintenance, the scum amount reduces to some extent but effect is not very obvious.
Summary of the invention
Therefore, the utility model is of poor quality to present roller ring mill ventilation, the scum amount high and whole defect of high cost, and a kind of roller ring mill that preferable ventilation effect is arranged is provided.
The technical scheme that the utility model adopts is:
The utility model roller ring mill; Comprise milling device and the defeated device for coal of raw coal is provided for this part of milling; The part of wherein milling comprises the bull ring pallet and along the circumferential distributed nozzle blade of this bull ring pallet, said nozzle vane installs on the said bull ring pallet through connector; And the bull ring pallet is a cylindrical structure.
Roller ring mill according to the utility model; Adopt the rotating ring of new structure form, the new fit structure of bull ring pallet and nozzle vane just in use is convenient to change the nozzle vane spare part of rapid wear; Save unnecessary spare parts consumption, just the consumption of bull ring pallet.
On the other hand, this programme is easy to eliminate the tapering of pallet outer lower portion than prior art, and just bull ring cover dish can be made cylindrical structure, based on this structure, when grinding machine is produced, is convenient to a wind and passes through, and reduces the dust pollution that causes because of malleation.
Above-mentioned roller ring mill, the side array of said bull ring pallet are useful on the groove of the said nozzle vane in location.
Above-mentioned roller ring mill also comprises the blade cover that is assembled together with said bull ring pallet one end face, and all nozzle vanes all are affixed to said blade and put according to form is installed to fixed blade.
Above-mentioned roller ring mill, said blade cover is connected to being connected through axial bolt with said bull ring pallet.
Above-mentioned roller ring mill, said nozzle vane and said blade cover are the integrative-structure of casting.
Above-mentioned roller ring mill, said blade cover is one, an end of nozzle vane is connected to this blade and puts.
Above-mentioned roller ring mill, said blade cover is positioned at the nozzle-end side.
Above-mentioned roller ring mill, said defeated device for coal are provided with into mill flap valve and this goes into to grind the drive unit of flap valve.
Above-mentioned roller ring mill, said to go into to grind flap valve be three flap valves.
Above-mentioned roller ring mill, said drive unit are the hydraulic cylinder of corresponding every turnover panel.
Description of drawings
Fig. 1 is the main TV structure sketch map of known coal pulverizer rotating ring structure.
Fig. 2 is the A-A sectional structure sketch map of Fig. 1.
Fig. 3 by according to a kind of roller ring mill of the utility model technical scheme the main TV structure sketch map of use rotating ring structure.
Fig. 4 is the B-B sectional structure sketch map of Fig. 3.
Fig. 5 is for driving the hydraulic principle sketch map of three flap valves.
Among the figure: 1, nozzle vane, 2, the bull ring pallet, 3, tapered configuration, 4, bolt, 5, nozzle-end, 6, the blade cover, 7, bolt hole, 8, bolt hole.
The specific embodiment
With reference to a kind of roller ring mill shown in the explanation accompanying drawing 3 and 4; Comprise milling device and the defeated device for coal of raw coal is provided for this part of milling; The part of wherein milling comprises bull ring pallet 2 and along the circumferential distributed nozzle blade 1 of this bull ring pallet, said nozzle vane installs on the said bull ring pallet through connector; And the bull ring pallet is a cylindrical structure.
Said rotating ring structure front relates to, and the design of this basic scheme is an independently spare part of consumable accessory nozzle vane conduct, and the physical life of bull ring pallet is long, and for the replacing of rotating ring structure, it is just passable often only to need to change nozzle vane; This basic structure need not to consider the setting of tapered configuration simultaneously.
Based on above-mentioned basic scheme, those skilled in the art can select or make up following technological means according to the needs of oneself:
Considering under the easy-to-dismount situation; In order to improve the bonding strength of nozzle vane; Preferable means are grooves that the side array of said bull ring pallet is useful on the said nozzle vane in location, about the structure of groove two kinds of basic selections are arranged, and a kind of basic selection is a circumferential equilibrium of forces and in the location that makes progress in week; Another kind of situation is except considering first kind of situation, also need consider spacing on the centrifugal direction.Therefore, the groove of selecting according to this can be rectangular channel, T type groove or dovetail groove.
Further, the blade cover 6 that is assembled together with said bull ring pallet one end face can also be set, all nozzle vanes all are affixed to said blade and put according to form is installed to fixed blade; The location of aspect nozzle vane not only; And easy to assembly, efficient is high, and bulk strength is also high.
Preferably, consider the needs of assembling aspect, said blade cover is connected to being connected through axial bolt 4 with said bull ring pallet.
Further, said nozzle vane and said blade cover be convenient to large-scale production, and interchangeability are good for the integrative-structure of casting.
Preferably, said blade cover is one, and an end of nozzle vane is connected to this blade and puts, and is simple in structure, and satisfies the specification requirement of installing.
Preferably, said blade cover is positioned at nozzle-end 5 sides, the setting of having stopped tapered configuration.
Preferably, said defeated device for coal is provided with into mill flap valve and this goes into to grind the drive unit of flap valve, and utilization is gone into to grind flap valve and can be controlled cutting mode, prevents that blanking is too concentrated.
It is preferably, said that to go into to grind flap valve be three flap valves.Originally some are gone into to grind flap valve and are two turnover panels, drive cam through planet cycloid speed reducer and knock valve rod and open the valve plate blanking, and the deadweight through valve rod makes the valve plate airtight blanking that resets again.This kind cutting mode causes the raw coal blanking even inadequately, and discharging point is more concentrated, and the mill rotation is difficult to raw coal is thrown to milling zone, is unfavorable for grinding, and leans on the tight inadequately from the repeats bits valve plate of valve rod simultaneously, and it is bigger to leak out.Make two flap valves into three flap valves after deliberation, the unlatching through three hydraulic cylinders control valve plates simultaneously and closing makes material in valve plate, change the blanking direction repeatedly, and blanking is more even.Under the effect of mill rotary centrifugal force, make raw coal get into milling zone sooner, system is more airtight in the mill, has realized the control automation.
Referring to Figure of description 5, said drive unit is the hydraulic cylinder of corresponding every turnover panel, and Hydraulic Elements are wherein all drawn according to the hydraulic pressure standard, do not make too much sign, above shown in three hydraulic cylinders be progressive cylinder, command range is long.
Claims (10)
1. roller ring mill; Comprise milling device and the defeated device for coal of raw coal is provided for this part of milling; The part of wherein milling comprises bull ring pallet (2) and along the circumferential distributed nozzle blade of this bull ring pallet (1), it is characterized in that: said nozzle vane installs on the said bull ring pallet through connector; And the bull ring pallet is a cylindrical structure.
2. roller ring mill according to claim 1 is characterized in that: the side array of said bull ring pallet is useful on the groove of the said nozzle vane in location.
3. roller ring mill according to claim 1 and 2 is characterized in that: also comprise the blade cover (6) that is assembled together with said bull ring pallet one end face, all nozzle vanes all are affixed to said blade and put according to form is installed to fixed blade.
4. roller ring mill according to claim 3 is characterized in that: said blade cover is connected to being connected through axial bolt (4) with said bull ring pallet.
5. roller ring mill according to claim 3 is characterized in that: said nozzle vane and said blade cover are the integrative-structure of casting.
6. roller ring mill according to claim 5 is characterized in that: said blade cover is one, and an end of nozzle vane is connected to this blade and puts.
7. roller ring mill according to claim 6 is characterized in that: said blade cover is positioned at nozzle-end (5) side.
8. roller ring mill according to claim 1 is characterized in that: said defeated device for coal is provided with into mill flap valve and this goes into to grind the drive unit of flap valve.
9. roller ring mill according to claim 8 is characterized in that: said to go into to grind flap valve be three flap valves.
10. it is characterized in that according to Claim 8 or 9 described roller ring mills: said drive unit is the hydraulic cylinder of corresponding every turnover panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202086865U CN202105687U (en) | 2011-06-21 | 2011-06-21 | Medium-speed roller type coal grinding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202086865U CN202105687U (en) | 2011-06-21 | 2011-06-21 | Medium-speed roller type coal grinding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202105687U true CN202105687U (en) | 2012-01-11 |
Family
ID=45431136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202086865U Expired - Fee Related CN202105687U (en) | 2011-06-21 | 2011-06-21 | Medium-speed roller type coal grinding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202105687U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106861825A (en) * | 2017-02-24 | 2017-06-20 | 中国电建集团河南工程公司 | 1000MW unit roller ring mill installation methods |
| CN112958224A (en) * | 2021-01-27 | 2021-06-15 | 郭瑜 | Rotary nozzle dynamic and static ring structure of coal mill |
-
2011
- 2011-06-21 CN CN2011202086865U patent/CN202105687U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106861825A (en) * | 2017-02-24 | 2017-06-20 | 中国电建集团河南工程公司 | 1000MW unit roller ring mill installation methods |
| CN112958224A (en) * | 2021-01-27 | 2021-06-15 | 郭瑜 | Rotary nozzle dynamic and static ring structure of coal mill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120111 Termination date: 20140621 |
|
| EXPY | Termination of patent right or utility model |