CN205518015U - Coal grinding apparatus containing ball mill - Google Patents
Coal grinding apparatus containing ball mill Download PDFInfo
- Publication number
- CN205518015U CN205518015U CN201620318801.7U CN201620318801U CN205518015U CN 205518015 U CN205518015 U CN 205518015U CN 201620318801 U CN201620318801 U CN 201620318801U CN 205518015 U CN205518015 U CN 205518015U
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- CN
- China
- Prior art keywords
- coal pulverizer
- coal
- ball
- pulverizer
- separator
- 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 - Fee Related
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Abstract
The utility model relates to a coal grinding apparatus containing ball mill, it includes that coal pulverizer, coal pulverizer just adorn the level and join in marriage and add the ball level with the coal pulverizer and join in marriage, draw together the coal pulverizer just adorn the level join in marriage by the feeder, a combustor, the separator, return tube cell and mixing box, the coal pulverizer is added the ball level and is joined in marriage and be 20~60 millimeters steel balls by the diameter to constitute, the output of feeder links to each other with coal conveyor, coal conveyor's below is equipped with rotatory transport auger I, rotatory transport auger I links to each other with the barrel of coal pulverizer, it joins in marriage steel ball and coal pulverizer and adds the ball level and join in marriage to be equipped with the coal pulverizer level in the barrel of coal pulverizer, the both sides of the barrel of coal pulverizer all are equipped with the wind passageway one time, the output of coal pulverizer is continuous with the separator above the coal pulverizer through the annular channel who carries auger II, the inside that an output of separator passes through return material pipe and the barrel of coal pulverizer links to each other, another output of separator links to each other with the combustor. The device reduces the ball mill ball load, reduces ball mill operation load.
Description
Technical field
This utility model belongs to steam power plant technical field, is specifically related to a kind of coal-grinding apparatus comprising ball mill.
Background technology
At present, the supply of electric power of China is still based on thermoelectricity, and at the end of 2015, whole nation generator installation total amount reaches 12.47
Hundred million kilowatts, wherein thermoelectricity 8.6 hundred million kilowatts.The power consumption of current domestic Thermal Power Enterprises pulverized coal preparation system has accounted for Thermal Power Enterprises electricity consumption
The 15～about 25% of amount, are the power consumption rich anies influential family of electricity power enterprise, and in coal-fired power plant, low speed coal mill accounts for all kinds of coal pulverizer sum
More than 60%, energy consumption equipment imperfection.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art to provide a kind of coal-grinding apparatus comprising ball mill,
This device, on the basis of ensureing ball mill mill efficiency, reduces ball mill ball load, reduces ball mill operating load, Jin Ershi
The most efficient, energy-conservation effect.
In order to achieve the above object, this utility model adopts the following technical scheme that
This utility model provide a kind of coal-grinding apparatus comprising ball mill, it include at the beginning of coal pulverizer, coal pulverizer fill grating and
Coal pulverizer adding ball grating；Described including fills grating by feeder, burner, separator, back powder pipe and mixer, mill at the beginning of coal pulverizer
Coal machine adding ball grating is made up of a diameter of 20～70 millimeters of steel balls, and the outfan of feeder is by coal spout and coal conveying dress
Putting connected, the lower section of coal conveyer device is provided with the conveying auger I of rotation, and the conveying auger I of rotation is connected with the cylinder of coal pulverizer,
Being provided with coal pulverizer grating steel ball and coal pulverizer adding ball grating in the cylinder of coal pulverizer, the both sides of the cylinder of coal pulverizer are equipped with one
Secondary wind passage, the First air passage of the side of coal pulverizer communicates with the outfan of feeder, the First air of the opposite side of coal pulverizer
Passage communicates with mixer, and the outfan of coal pulverizer is by the separator phase above the circular passage of conveying auger II and coal pulverizer
Even, an outfan of separator is connected with the inside of the cylinder of coal pulverizer by refeed line, another outfan of separator
It is connected with burner.
According to the separator above the above-mentioned coal-grinding apparatus comprising ball mill, the outfan of described coal pulverizer and coal pulverizer
Between be provided with sealer.
Compared with prior art, the beneficial effect that this utility model obtains:
1. the steel ball grating of relative quantity in ball mill in this utility model structure, ball size is to the work of coal pulverizer also
Having a significant impact, the ball Main Function of bead such as diameter 20,25 millimeters is to play abrasive action, big ball such as diameter 60,70 millimeters
The gangue being primarily directed in coal be difficult to crush, the ball of mid diameter specification both can crush, and also has the work of grinding simultaneously
With.The oversize of ball makes falling sphere energy excessive, and major part energy can not utilize, and between major diameter steel ball, space is excessive, nothing
The effective grinding powder coal of method, reduces its working effect.On the contrary, if ball is too small, the most do not play fragmentation, make coal-grinding effect become equally
Bad.Under same drum rotation speed and ball load, steel ball size is the least, and its total surface area and shock number of times increase, pulverizer capacity
The more, but after minor diameter steel ball ratio exceedes a certain critical point, it is thin that pulverizer capacity will reduce coal dust for the highest and fine powder
Degree becomes uneven.Coal pulverizer each diameter steel ball keeps a rational proportion, and minor diameter steel ball is filled between major diameter steel ball, suitable
Degree increases steel ball bulk density, and the gap between coal dust and abrading-ball will not be caused again in ball mill as losing the small ball of circle to fill out
Fill the overstocked coal dust brought output difficulty, be conducive to improving milling efficiency, reduce powder process energy consumption.
2. this utility model structure reduces ball mill ball load 30 ~ 40%, saves ball mill operating electric energy 15-30%；With
The reduction of load, the fault rate of the equipment such as size gear pair, bearing shell and reductor will reduce, and be extended equipment life, also
Save substantial amounts of maintenance cost；And load reduces, bearing temperature reduces, and lubrication oil consumption also can reduce, improve as required
Fineness of pulverized coal, the abrasion to liner plate is less simultaneously.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is further illustrated.
With reference to shown in Fig. 1, a kind of coal-grinding apparatus comprising ball mill, it includes filling at the beginning of coal pulverizer 1, coal pulverizer grating and mill
Coal machine adding ball grating；Described including fills grating by feeder 2, burner 3, separator 4, back powder pipe 5, mixer 6 at the beginning of coal pulverizer
With sealer 7, coal pulverizer adding ball grating is made up of a diameter of 20～70 millimeters of steel balls, and the outfan of feeder 2 passes through to fall
Coal pipe 8 is connected with coal conveyer device, and the lower section of coal conveyer device is provided with the conveying auger I9 of rotation, the conveying auger I9 of rotation with
The cylinder of coal pulverizer 1 is connected, and is provided with coal pulverizer grating steel ball and coal pulverizer adding ball grating, coal pulverizer 1 in the cylinder of coal pulverizer 1
The both sides of cylinder be equipped with First air passage 10, the First air passage of the side of coal pulverizer 1 and the outfan phase of feeder 2
Logical, the First air passage of the opposite side of coal pulverizer 1 communicates with mixer 6, and the outfan of coal pulverizer 1 is by conveying auger II11's
Circular passage is connected with the separator 4 above coal pulverizer, and an outfan of separator 4 is by the cylinder of refeed line 5 with coal pulverizer 1
The inside of body is connected, and another outfan of separator 4 is connected with burner 3；On the outfan of described coal pulverizer 1 and coal pulverizer
It is provided with sealer 7 between the separator of side.
This utility model arrangement works process:
Raw coal enters coal spout 8 by the feeder 2 of energy automatic control velocity, and the effect by gravity falls into coal conveyer device
Lower section, the conveying auger I9 rotated send into coal pulverizer 1 cylinder, the coal pulverizer cylinder of rotation is built with a certain amount of steel
Ball, grinds to form coal dust raw coal.
The First air hollow pipe from coal pulverizer both sides enters the cylinder of coal pulverizer 1, is dried raw coal and coal dust, and will
The coal dust ground is transported in the separator 4 above coal pulverizer by the circular passage of conveying auger II11, underproof slightly
Coal dust returns grinding again in 1 cylinder of coal pulverizer, and qualified fine powder is sent to burner 3.
Part First air enter mixer 6, raw coal is carried out abundant predrying after enter separator, with enter to grind First air mix
Close, jointly complete coal dust to be further dried and carries.Wherein raw coal can be heated and be dried by heat primary air, cold once
Wind scalable enters grinding machine temperature.
Claims (2)
1. the coal-grinding apparatus comprising ball mill, it is characterised in that: it includes filling at the beginning of coal pulverizer, coal pulverizer grating and coal pulverizer
Adding ball grating；Described including fills grating by feeder, burner, separator, back powder pipe and mixer, coal pulverizer benefit at the beginning of coal pulverizer
Ball adding grating is made up of a diameter of 20～70 millimeters of steel balls, and the outfan of feeder passes through coal spout and coal conveyer device phase
Even, the lower section of coal conveyer device is provided with the conveying auger I of rotation, and the conveying auger I of rotation is connected with the cylinder of coal pulverizer, coal-grinding
Being provided with coal pulverizer grating steel ball and coal pulverizer adding ball grating in the cylinder of machine, the both sides of the cylinder of coal pulverizer are equipped with First air
Passage, the First air passage of the side of coal pulverizer communicates with the outfan of feeder, the First air passage of the opposite side of coal pulverizer
Communicating with mixer, the outfan of coal pulverizer is connected with the separator above coal pulverizer by the circular passage of conveying auger II,
One outfan of separator is connected with the inside of the cylinder of coal pulverizer by refeed line, another outfan of separator and combustion
Burner is connected.
The coal-grinding apparatus comprising ball mill the most according to claim 1, it is characterised in that: the outfan of described coal pulverizer with
It is provided with sealer between separator above coal pulverizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620318801.7U CN205518015U (en) | 2016-04-18 | 2016-04-18 | Coal grinding apparatus containing ball mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620318801.7U CN205518015U (en) | 2016-04-18 | 2016-04-18 | Coal grinding apparatus containing ball mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205518015U true CN205518015U (en) | 2016-08-31 |
Family
ID=56793265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620318801.7U Expired - Fee Related CN205518015U (en) | 2016-04-18 | 2016-04-18 | Coal grinding apparatus containing ball mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205518015U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110319607A (en) * | 2019-07-17 | 2019-10-11 | 哈尔滨锅炉厂有限责任公司 | Utilize the system of Fresnel solar molten salt collection hot working fluid heating coal-fired boiler hot primary wind |
| CN110319608A (en) * | 2019-07-17 | 2019-10-11 | 哈尔滨锅炉厂有限责任公司 | Utilize the system of tower type solar fused salt collection hot working fluid heating coal-fired boiler hot primary wind |
| CN110332718A (en) * | 2019-07-17 | 2019-10-15 | 哈尔滨锅炉厂有限责任公司 | Utilize the system of groove type solar conduction oil collection hot working fluid heating coal-fired boiler hot primary wind |
-
2016
- 2016-04-18 CN CN201620318801.7U patent/CN205518015U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110319607A (en) * | 2019-07-17 | 2019-10-11 | 哈尔滨锅炉厂有限责任公司 | Utilize the system of Fresnel solar molten salt collection hot working fluid heating coal-fired boiler hot primary wind |
| CN110319608A (en) * | 2019-07-17 | 2019-10-11 | 哈尔滨锅炉厂有限责任公司 | Utilize the system of tower type solar fused salt collection hot working fluid heating coal-fired boiler hot primary wind |
| CN110332718A (en) * | 2019-07-17 | 2019-10-15 | 哈尔滨锅炉厂有限责任公司 | Utilize the system of groove type solar conduction oil collection hot working fluid heating coal-fired boiler hot primary wind |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20170418 |