CN209531032U - A kind of medium-speed pulverizer mill fluidizer - Google Patents
A kind of medium-speed pulverizer mill fluidizer Download PDFInfo
- Publication number
- CN209531032U CN209531032U CN201821437282.1U CN201821437282U CN209531032U CN 209531032 U CN209531032 U CN 209531032U CN 201821437282 U CN201821437282 U CN 201821437282U CN 209531032 U CN209531032 U CN 209531032U
- Authority
- CN
- China
- Prior art keywords
- medium
- speed pulverizer
- mill
- coal
- primary air
- 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.)
- Active
Links
Abstract
The utility model discloses a kind of medium-speed pulverizer mill fluidizers, including medium-speed pulverizer, further include heat primary air blast pipe；The centre of medium-speed pulverizer is provided with coal spout；The inner upper end of medium-speed pulverizer is provided with distributor；The coal spout two sides of distributor upper end are provided with heat primary air discharge pipe；The lower part of medium-speed pulverizer is provided with mill；Millstone sheet is provided in the outer circumference of mill；There are two grinding rollers for the upper end setting of millstone sheet；The other end of heat primary air blast pipe is penetrated into the cavity of medium-speed pulverizer lower end；Heat primary air blast pipe issues a branch upwards, forms fluidisation air hose；The other end of fluidisation air hose extends to the inside of medium-speed pulverizer.The utility model can reduce the bulk density of raw coal on mill, improve the grinding efficiency of raw coal, increase the yield of coal dust, reduce the power output of machine, and not increase any economy, power consumption cost；It is furthermore provided with safety interlock, coal pulverizer and the safety of operator can be protected.
Description
Technical field
The utility model relates to a kind of fluidizer more particularly to a kind of medium-speed pulverizer mill fluidizers.
Background technique
Medium-speed pulverizer is the preferred unit of most of coal-fired power station boiler pulverized coal preparation system, the operational safety of medium-speed pulverizer
Property and economy be influence boiler normal combustion key point.With the variation of coal market price situation, more and more
Coal-fired power station boiler starts to mix the economy coal for burning that moisture content is larger, grinding performance is poor, content of ashes is higher etc., thus
Reduce the economic performance of boiler entirety.The variation of raw coal moisture directly results in intrinsic medium-speed pulverizer and cannot adapt to completely
New coal makes output drop, the powder producing rate decline, machine of coal pulverizer so that coal pulverizer be made to fail well to grind raw coal
Acting increases, and is not able to satisfy the normal Coal-fired capacity needs of boiler combustion.
It needs to increase machinery equipment or the more high-quality raw coal of purchase mostly for the improvement of problem above in field at present, can
Economic cost is improved, machine acting is improved and increases power consumption.
Utility model content
In order to solve shortcoming present in above-mentioned technology, the utility model provides a kind of medium-speed pulverizer mill stream
Makeup is set.
In order to solve the above technical problems, the technical solution adopted in the utility model is: a kind of medium-speed pulverizer mill stream
Makeup is set, including medium-speed pulverizer, further includes heat primary air blast pipe, fluidisation air hose, mill, grinding roller；In medium-speed pulverizer
Between be provided with coal spout, one end of coal spout stretches to the lower part of medium-speed pulverizer, and the other end is out of medium-speed pulverizer to above wearing
Out；The inner upper end of medium-speed pulverizer is fixedly installed distributor；The coal spout two sides of distributor upper end are provided with hot primary
The lower end of wind discharge pipe, heat primary air discharge pipe is connected with distributor；
The lower part of medium-speed pulverizer is provided with mill support base, and mill support base is located at the lower section of coal spout；Mill support
The upper end of seat is provided with mill, and mill can be rotated in the horizontal direction along its axle center, is fixedly installed in the outer circumference of mill
The millstone sheet of downward concave end；The upper end of millstone sheet is arranged symmetrically, and there are two grinding rollers；The upper end of grinding roller tilts inwardly；Grinding roller
It can in an inclined direction be rotated along its axle center；
One end of heat primary air blast pipe is located at the outside of medium-speed pulverizer, the other end it is horizontally extending and penetrate to
In the cavity of medium-speed pulverizer lower end；Heat primary air blast pipe on the outside of medium-speed pulverizer issues a branch upwards, forms stream
Change air hose；One end of fluidisation air hose is connected with heat primary air blast pipe, and bending extends to the right again after the other end upwardly extends
To the inside of medium-speed pulverizer；The fluidisation air hose horizontal extension penetrated in medium-speed pulverizer is arranged diagonally downward again, and lower end is solid
Surely it is provided with nozzle, nozzle is among the upper end of mill.
Further, it fluidizes on air hose and is sequentially installed with electric check valve, electric control valve.
Further, safety interlock is provided between electric check valve and medium-speed pulverizer.
Further, there is interval between the lower end and mill of coal spout.
The utility model passes through the fluidized wind distributed from heat primary air on the basis of guaranteeing original machine milling performance
Disturbance, reduce mill top raw coal bulk density, reduce machine inside coal dust accumulation, improve the grinding efficiency of raw coal,
The yield for increasing coal dust, reduces the power output of machine, and do not increase any economy, power consumption cost；Furthermore the utility model is arranged
Have safety interlock, when coal pulverizer when something goes wrong, close electric check valve in time, separate the penetrating of fluidized wind, protection mill
The safety of coal machine and operator.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model.
Fig. 2 is the air inlet exhaust air flue schematic diagram of the utility model.
In figure: 1, medium-speed pulverizer；2, heat primary air blast pipe；3, mill；4, grinding roller；5, millstone sheet；6, air hose is fluidized；
7, electric control valve；8, electric check valve；9, nozzle；10, coal spout；11, mill support base；12, distributor；13, heat is primary
Wind discharge pipe.
Specific embodiment
Utility model will be further described in detail below with reference to the attached drawings and specific embodiments.
A kind of medium-speed pulverizer mill fluidizer shown in Fig. 1-2, including medium-speed pulverizer 1, further include heat primary air
Blast pipe 2, fluidisation air hose 6, mill 3, grinding roller 4；The centre of medium-speed pulverizer 1 is provided with coal spout 10, and one end of coal spout is stretched
Enter to the lower part of medium-speed pulverizer 1, the other end is pierced by upwards out of medium-speed pulverizer 1；The inner upper end of medium-speed pulverizer 1 is fixed
It is provided with distributor 12；The coal spout two sides of 12 upper end of distributor are provided with heat primary air discharge pipe 13, heat primary air outlet air
The lower end of pipe 13 is connected with distributor 12；
The lower part of medium-speed pulverizer 1 is provided with mill support base 11, and mill support base 11 is located at the lower section of coal spout；Mill
The upper end of support base 11 is provided with mill 3, and mill 3 can rotate in the horizontal direction along its axle center, solid in the outer circumference of mill 3
Surely it is provided with the millstone sheet 5 of downward concave end, mill collects outward for making the raw coal fallen in coal spout pass through centrifugal force,
Millstone sheet 5 is used to receive the raw coal of centrifugation；The upper end of millstone sheet 5 is arranged symmetrically, and there are two grinding rollers 4；The upper end of grinding roller 4 is equal
It tilts inwardly, to shorten the spacing between grinding roller 4 and coal spout 10；Grinding roller 4 can in an inclined direction be rotated along its axle center, be used
In rolling the raw coal in millstone sheet 5, raw coal is made to be ground into coal dust；
One end of heat primary air blast pipe 2 is located at the outside of medium-speed pulverizer 1, and the other end is horizontally extending and penetrates
Into the cavity of 1 lower end of medium-speed pulverizer；The heat primary air blast pipe 2 in 1 outside of medium-speed pulverizer issues a branch, shape upwards
At fluidisation air hose 6；One end of fluidisation air hose 6 is connected with heat primary air blast pipe 2, lateral bending to the right again after the other end upwardly extends
Folding extends to the inside of medium-speed pulverizer 1；The first horizontal extension of the fluidisation air hose 6 penetrated in medium-speed pulverizer 1 is tilted towards again to be divided into
It sets, lower end is fixedly installed nozzle 9, and nozzle 9 is among the upper end of mill 3.
Electric check valve 8, electric control valve 7 are sequentially installed on fluidisation air hose 6, electric check valve 8 is for controlling fluidisation
Air hose 6 is opened completely or is closed, and electric control valve 7 is for adjusting Fluidization wind rate.
It is provided with safety interlock between electric check valve 8 and medium-speed pulverizer 1, when medium-speed pulverizer 1 breaks down
When hang-up, safety interlock can close electric check valve 8, prevent fluidisation air hose 6 from continuing to convey into medium-speed pulverizer 1
Hot wind causes raw coal temperature excessively high and causes fire.
There is interval between the lower end and mill 3 of coal spout 10.
The application method of the utility model are as follows:
A, heat primary air blast pipe 2 is opened, heat primary air is led into medium-speed pulverizer 1 by heat primary air blast pipe 2；
B, then start medium-speed pulverizer 1, put into raw coal into medium-speed pulverizer 1 from coal spout 10；
C, electric check valve 8 is opened, heat primary air punishes stream, heat primary air in the end branch of heat primary air blast pipe 2
Fluidized wind is formed into fluidizing in air hose 6；Heat primary air, which enters in snorkel 5, forms dry wind, and fluidized wind is to the original on mill 3
Coal plays fluidization, and dry wind plays desiccation to the raw coal on mill 3.
D, raw coal is transmitted in the millstone sheet 5 at 3 edge of mill on mill 3 by centrifugal force, and grinding roller 4 is to millstone sheet 5 immediately
In raw coal rolled, the coal dust after rolling by newly into raw coal and rolling for grinding roller 4 due to being gradually accumulated in millstone sheet 5
Outside and mill 3 on；
E, the dry wind conveyed into medium-speed pulverizer 1 due to machine bottom closing can be upward from the outside of millstone sheet 5
Fang Liudong will be carried in flow process and be deposited in the coal dust of 5 outer of millstone sheet and move upwards, until reaching at distributor 12；
F, during dry wind carries coal dust movement, fluidized wind blows afloat the coal dust being deposited on mill 3, can
It is enough to be carried together by dry wind to distributor；
If g, the fineness of coal dust is undesirable, can be screened in distributor 12, remaining fineness meets the requirements
Coal dust medium-speed pulverizer 1 can be left from heat primary air discharge pipe 13 with dry wind.
The utility model has the advantage that compared with traditional technology
A, fluidized wind is distributed from heat primary air, does not increase machinery equipment, is not required to improve machine run efficiency, have very
Good energy-saving and emission-reduction effect；
B, the bulk density of mill top raw coal is reduced, the accumulation of coal dust inside machine is reduced, improves the grinding effect of raw coal
Rate；
C, the yield of coal dust is increased, the grinding efficiency of machine reduces the power output of machine；
D, do not increase any economy, power consumption cost, reduce purchase coal cost and operating cost；
E, be provided with safety interlock, when coal pulverizer when something goes wrong, close electric check valve in time, separate fluidized wind
Penetrating, prevent fire, protect coal pulverizer and the safety of operator；
Above embodiment is not limitations of the present invention, and the utility model is also not limited to the example above,
The variations, modifications, additions or substitutions that those skilled in the art are made within the scope of the technical solution of the utility model,
Also the protection scope of the utility model is belonged to.
Claims (4)
1. a kind of medium-speed pulverizer mill fluidizer, including medium-speed pulverizer (1), it is characterised in that: further include heat primary air
Blast pipe (2), fluidisation air hose (6), mill (3), grinding roller (4)；The centre of the medium-speed pulverizer (1) is provided with coal spout
(10), one end of coal spout stretches to the lower part of medium-speed pulverizer (1), and the other end is pierced by upwards out of medium-speed pulverizer (1)；Institute
The inner upper end for stating medium-speed pulverizer (1) is fixedly installed distributor (12)；The coal spout two sides of distributor (12) upper end
It is provided with heat primary air discharge pipe (13), the lower end of heat primary air discharge pipe (13) is connected with distributor (12)；
The lower part of the medium-speed pulverizer (1) is provided with mill support base (11), and mill support base (11) is located under coal spout
Side；The upper end of the mill support base (11) is provided with mill (3), and mill (3) can rotate in the horizontal direction along its axle center；Institute
State the millstone sheet (5) that downward concave end is fixedly installed in the outer circumference of mill (3)；The upper end of the millstone sheet (5) is symmetrical
There are two grinding roller (4) for setting；The upper end of the grinding roller (4) tilts inwardly；The grinding roller (4) can be along its axle center in inclination side
Rotation upwards；
One end of the heat primary air blast pipe (2) is located at the outside of medium-speed pulverizer (1), and the other end is horizontally extending simultaneously
It penetrates into the cavity of medium-speed pulverizer (1) lower end；Heat primary air blast pipe (2) on the outside of the medium-speed pulverizer (1) is upward
A branch is issued, fluidisation air hose (6) is formed；One end of fluidisation air hose (6) is connected with heat primary air blast pipe (2),
The other end bends the inside for extending to medium-speed pulverizer (1) after upwardly extending to the right again；Penetrate the stream in medium-speed pulverizer (1)
Change air hose (6) first horizontal extension to be arranged diagonally downward again, lower end is fixedly installed nozzle (9), and nozzle (9) is in mill (3)
Upper end among.
2. medium-speed pulverizer mill fluidizer according to claim 1, it is characterised in that: on the fluidisation air hose (6)
It is sequentially installed with electric check valve (8), electric control valve (7).
3. medium-speed pulverizer mill fluidizer according to claim 2, it is characterised in that: the electric check valve (8)
Safety interlock is provided between medium-speed pulverizer (1).
4. medium-speed pulverizer mill fluidizer according to claim 3, it is characterised in that: under the coal spout (10)
There is interval between end and mill (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821437282.1U CN209531032U (en) | 2018-09-04 | 2018-09-04 | A kind of medium-speed pulverizer mill fluidizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821437282.1U CN209531032U (en) | 2018-09-04 | 2018-09-04 | A kind of medium-speed pulverizer mill fluidizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209531032U true CN209531032U (en) | 2019-10-25 |
Family
ID=68244958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821437282.1U Active CN209531032U (en) | 2018-09-04 | 2018-09-04 | A kind of medium-speed pulverizer mill fluidizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209531032U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111167566A (en) * | 2020-02-10 | 2020-05-19 | 北京蓝爱迪电力技术有限公司 | Method and device for improving coal mill output based on lignite pulverizing system |
-
2018
- 2018-09-04 CN CN201821437282.1U patent/CN209531032U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111167566A (en) * | 2020-02-10 | 2020-05-19 | 北京蓝爱迪电力技术有限公司 | Method and device for improving coal mill output based on lignite pulverizing system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109395837A (en) | A kind of medium-speed pulverizer mill fluidizer and its application method | |
| CN101380606A (en) | Bowl type half-speed grinding mill | |
| JP2008082651A (en) | Coal-biomass mixed firing system and method | |
| CN206746767U (en) | A kind of desulfurization agstone preparation system | |
| CN106040405A (en) | Pre-grinding vertical mill united semi-finish grinding system with built-in powder concentrator | |
| CN209531032U (en) | A kind of medium-speed pulverizer mill fluidizer | |
| CN207238102U (en) | A kind of dry powder fire extinguishing agent lapping device | |
| CN102958614B (en) | Vertical roller mill | |
| CN205095974U (en) | Biax flows baffle separator | |
| CN206152954U (en) | Medium speed pulverizer rotating nozzle | |
| CN109174409A (en) | The flyash System of Ultra Thin Power Rubbing that multiple stage circulation is processed and broken up in advance | |
| CN209302870U (en) | A kind of spreading is evenly distributed with the roller type vertical mill of spout ring | |
| CN202845332U (en) | Spiral flow powder removing machine for dry grading of fine coal before selection | |
| CN102784757A (en) | Efficient airflow classification fine-coal remover for power coal before selecting | |
| CN207478697U (en) | A kind of abrasive disk type spring becomes loading middling speed pulverized coal preparation equipment | |
| CN102225397A (en) | Cement raw material preparation system for rolling machine | |
| CN207430394U (en) | The special powder concentrator of coal mill system | |
| CN207357597U (en) | The special powder concentrator of sandstone | |
| CN105750022A (en) | Medium-speed coal mill with deashing desulfurizing device | |
| CN211436519U (en) | Production process system for producing multi-product machine-made sand | |
| CN211436406U (en) | Process system for producing fine sand by using machine-made sand vertical mill | |
| CN104759334B (en) | High efficiency medium-speed grinding device | |
| CN205496052U (en) | Bitonic screen separation STREAMING efficinet separator | |
| CN203899672U (en) | Ultra-thin vertical roll mill | |
| JP2012217920A (en) | Vertical mill |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |