CN107649240A - The special powder concentrator of coal mill system - Google Patents
The special powder concentrator of coal mill system Download PDFInfo
- Publication number
- CN107649240A CN107649240A CN201710900603.0A CN201710900603A CN107649240A CN 107649240 A CN107649240 A CN 107649240A CN 201710900603 A CN201710900603 A CN 201710900603A CN 107649240 A CN107649240 A CN 107649240A
- Authority
- CN
- China
- Prior art keywords
- pulverizing chamber
- cone
- powder concentrator
- cage rotor
- upper shell
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
- B02C23/24—Passing gas through crushing or disintegrating zone
- B02C23/30—Passing gas through crushing or disintegrating zone the applied gas acting to effect material separation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
- B02C23/24—Passing gas through crushing or disintegrating zone
- B02C23/32—Passing gas through crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/10—Crushing or disintegrating by roller mills with a roller co-operating with a stationary member
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
The invention discloses a kind of special powder concentrator of coal mill system, including upper shell, middle cone, the lower shell being sequentially connected, middle cone includes inner cone, outer cone, lower shell connects ventilation blower, the fine powder and the mixture of hot blast that ventilation blower mills grinding machine are together sent in the lower shell of powder concentrator, inner cone bottom connects pulverizing chamber, pulverizing chamber bottom connection coarse fodder pipe；The pressure roller shaft of some row's steel-tooths is provided with pulverizing chamber provided with surface, upper shell bottom is provided with cage rotor, vent passages are left between cage rotor and upper shell barrel；The rotating shaft connection motor of cage rotor, cage rotor top is provided with chimney fan.The powder concentrator that the present invention is set is separated in advance due to fine grained, pulverizing chamber is to the further crushing of coarse granule, so that coarse grained particle diameter gap is smaller, the material particles for re-entering into grinding machine are more uniformly neat, the mill efficiency of grinder system greatly improves, be advantageous to the even running of grinding machine, improve system throughput.
Description
Technical field
The present invention relates to powder concentrator device field, specially a kind of special powder concentrator of coal mill system.
Background technology
What raw coal was milled（Coal mill system）The course of work is：Raw coal is sent into mill feeding device by feeding equipment, in thing
While being slipped under material, hot blast is entered by blast pipe raw coal is dried, milled after fully drying in abrasive body, in raw coal
While being broken and grind, by ad hoc ventilation blower by the drawing mechanism of grinding machine by ground fine powder together with having used
Cross hot blast and together suction out grinding machine, the mixture of fine powder and hot blast separates underproof coarse powder by ad hoc powder concentrator, is sending
Grinding machine is returned to re-grind.Powder concentrator is to aim at the matching used static rank bale breaking equipment of grinding machine, the material that grinding machine crushes out
Grain distribution is very wide, after selecting powder by powder concentrator, can directly obtain finished product by fine grained first at sorting, and bulky grain continues
Crushed again into roll squeezer or ball mill.At present, beaten in building materials and metallurgy industry, powder concentrator because it has material concurrently
Dissipate, dry, the function of classification, various grinding process systems can be formed with grinding machine, being obtained in building materials, cement, coal mill industry
It is widely applied.
After the completion of existing powder concentrator selects powder, coarse powder is discharged from the discharging opening of lower end, is continued to send grinding machine back to and is milled.But by
Had differences in filtering out the coarse grained particle size of part, have a strong impact on the further pressure roller effect of grinder, the work of grinding machine
It is larger to make burden, and operating efficiency reduces.Therefore, it is necessary to it is relatively easy to seek a kind of structure, can largely reduce
Grain thing particle size difference, beneficial to milling for follow-up grinding machine.
The content of the invention
To solve the above problems, the invention discloses a kind of special powder concentrator of coal mill system.
In order to reach object above, the present invention provides following technical scheme：
A kind of special powder concentrator of coal mill system, it is characterised in that：It is described including upper shell, middle cone, the lower shell being sequentially connected
Middle cone includes inner cone, outer cone, and the outer cone is connected with upper shell, lower shell, and the lower shell connects ventilation blower, ventilation
The fine powder and the mixture of hot blast that machine mills grinding machine are together sent in the lower shell of powder concentrator, the inner cone bottom connection
Pulverizing chamber, the pulverizing chamber bottom connect coarse fodder pipe；Pressure roller shaft is provided with the pulverizing chamber, if the surface of the pressure roller shaft is provided with
Dry row's steel-tooth, often it is staggered between row's steel-tooth；The pressure roller axis connection crushes motor, and the crushing motor is arranged on pulverizing chamber
Locular wall on the outside of；The upper shell bottom is provided with cage rotor, and vent passages are left between cage rotor and upper shell barrel；Cage
Formula rotor includes impeller, the directing vane of connection impeller being connected with rotating shaft；The rotating shaft connects motor, and the motor is arranged on
The top of cylinder；Chimney fan is provided with above the cage rotor.
Further, the inwall of the pulverizing chamber, which is provided with, crushes projection.The steel-tooth, will with crushing male cooperation effect
Larger coarse granule is crushed, and ensures the coarse grained even particle size distribution from the discharge of coarse fodder pipe.
Further, placing box is provided with the outside of the locular wall of the pulverizing chamber, the crushing motor is arranged in placing box.
Further, deflection cone is connected between the pulverizing chamber and coarse fodder pipe, the deflection cone is upper coarse and lower fine.Deflection cone
Play collection and cushioning effect.
Further, the pulverizing chamber connection blowing device, the blowing device include blowpipe, and the blowpipe connects wind
Machine.The blower fan provides hot blast, and the particle powder being adhered on pulverizing chamber locular wall is blown down to come.
The operation principle of the special powder concentrator of coal mill system of the present invention：The hot blast swept by ventilation blower wind is with material by selecting powder
The lower shell of machine enters in powder concentrator, after inside and outside cone rectification, along in the circular passage deceleration between Outer Taper and inner cone
Rise, enter upper shell, vent passages are left between cage rotor and upper shell barrel；Hot blast forms eddy flow in cage rotor
Air-flow, under the turning effort of the water conservancy diversion and rotor of wind guide vane, stable horizontal vortex choosing is formed between wind guide vane and rotor
Powder area.The dust granules moved in vortex will be acted on by gravity, wind-force and rotary centrifugal force simultaneously, tiny slight particle with
Air-flow be inhaled into internal rotor flow through chimney fan into chimney fan connection dust-precipitator be separated as finished product fine powder.Wherein
Coarse granule realize sorting through slipping into interior centrum along cage rotor side wall under gravitational settling, centrifugal action, coarse particles then under
Fall, pulverizing chamber is pooled to through inner cone, after the crushing of the crushing rotating shaft in pulverizing chamber, be pooled to coarse fodder pipe, return to grinding machine again
Mill.Finish fineness can effectively be adjusted by changing rotor speed.
Fine powder separates uses cyclone cylinder with harvester using efficient low-resistance.On the one hand the separating effect of fine powder is also improved,
On the other hand system flow can be simplified, save system investments.
Beneficial effects of the present invention are：1st, because fine grained is separated in advance, pulverizing chamber is further to coarse granule
Crush so that coarse grained particle diameter gap is smaller, and it is more uniformly neat to re-enter into the material particles of grinding machine, grinder system
Mill efficiency greatly improves, and is advantageous to the even running of grinding machine, improves system throughput；2nd, the separation selection by winnowing in coarse granule upper shell
When, there is drying effect by windage；3rd, powder concentrator reasonable in internal structure, grinding efficiency height, energy-saving effect become apparent from；4th, grasp
Make simply, fineness regulation is convenient；By changing the can of powder concentrator main motor rotating speed in the thin of interior regulation product in a big way
Degree.
Brief description of the drawings
Fig. 1, the present invention structural representation；
Fig. 2, the present invention pulverizing chamber structural representation；
Fig. 3, the present invention pulverizing chamber left view.
Wherein：Upper shell 1, middle cone 2, inner cone 21, outer cone 22, lower shell 3, pulverizing chamber 4, coarse fodder pipe 5, pressure roller shaft 6, steel
Tooth 61, projection 7 is crushed, motor 8, cage rotor 9 is crushed, impeller 91, directing vane 92, rotating shaft 10, motor 11, chimney fan 12, puts
Put case 13, deflection cone 14, blowing device 15, blowpipe 151, blower fan 152.
Embodiment
With reference to the accompanying drawings and detailed description, the present invention is furture elucidated, it should be understood that following embodiments are only
For illustrating the present invention rather than limitation the scope of the present invention.
The direction of arrow is the flow direction of material and hot blast in Fig. 1.
As shown in Figure 1, Figure 2, Figure 3 shows, the special powder concentrator of a kind of coal mill system, including be sequentially connected upper shell 1, middle cone
2nd, lower shell 3, middle cone include inner cone 21, outer cone 22, and outer cone is connected with upper shell, lower shell, lower shell connection ventilation
Machine, the fine powder and the mixture of hot blast that grinding machine is milled by ventilation blower are together sent in the lower shell of powder concentrator, inner cone bottom
Portion connects pulverizing chamber 4, pulverizing chamber bottom connection coarse fodder pipe 5；Pressure roller shaft 6 is provided with pulverizing chamber, the surface of pressure roller shaft 6 is provided with some
Steel-tooth 61 is arranged, is often staggered between row's steel-tooth, the inwall of pulverizing chamber, which is provided with, crushes projection 7；Steel-tooth is with crushing male cooperation
Effect, larger coarse granule is crushed, and ensures the coarse grained even particle size distribution from the discharge of coarse fodder pipe, pressure roller axis connection
Motor 8 is crushed, upper shell bottom is provided with cage rotor 9, vent passages are left between cage rotor and upper shell barrel；Cage turns
Attached bag includes the impeller 91 being connected with rotating shaft 10, connects the directing vane 92 of impeller；Rotating shaft connects motor 11, and motor is arranged on upper shell
Top；Chimney fan 12 is provided with above cage rotor.
In the present embodiment, placing box 13 is provided with the outside of the locular wall of pulverizing chamber, motor is crushed and is arranged in placing box, crush
Rotating shaft is provided with seal washer with pulverizing chamber locular wall junction, plays sealing function, and set with crushing rotating shaft junction in pulverizing chamber
There is seal closure.Sealing ring, seal closure play a part of sealing, good sealing effect, reasonable in internal structure so that grinding efficiency
It is high.Certainly, in order to ensure the stability of placing box, support bar, these prior arts can be provided between placing box and outer centrum
The step improvement of carry out one, in the present invention without repeating.
In the present embodiment, deflection cone 14 is connected between pulverizing chamber and coarse fodder pipe, the deflection cone is upper coarse and lower fine, water conservancy diversion
Cone plays collection and cushioning effect.
In the present embodiment, pulverizing chamber connection blowing device 15, blowing device include blowpipe 151, blowpipe connecting fan
152, blower fan provides hot blast, and the particle powder being adhered on pulverizing chamber locular wall is blown down to come.Blower fan uses small-sized fan, directly sets
Put on the locular wall of pulverizing chamber.Blowing device can also blow down coarse fodder simultaneously, avoid blocking, and less coarse granule is directly fallen,
Larger coarse granule is crushed indoor steel-tooth and crushed.
In the present embodiment, the runner that the runner of motor is connected with rotating shaft passes through triangle band connection.
In the present embodiment, the section of inner cone 21 is circle, and the section of pulverizing chamber 4 is square, the section of deflection cone 14
For circle.Often it is staggered between row's steel-tooth, plays more preferable pulverization.Certainly basis, which is actually needed, can be set to arbitrarily
Shape.
Technological means disclosed in the present invention program is not limited only to the technological means disclosed in above-mentioned embodiment, in addition to
Formed technical scheme is combined by above technical characteristic.It should be pointed out that for those skilled in the art
For, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (5)
1. a kind of special powder concentrator of coal mill system, including upper shell, middle cone, the lower shell being sequentially connected, the middle cone bag
Inner cone, outer cone are included, the outer cone is connected with upper shell, lower shell, and the lower shell connects ventilation blower, and ventilation blower is by grinding machine
The fine powder and the mixture of hot blast milled together are sent in the lower shell of powder concentrator, and the inner cone bottom connects pulverizing chamber,
The pulverizing chamber bottom connects coarse fodder pipe；Pressure roller shaft is provided with the pulverizing chamber, the surface of the pressure roller shaft is provided with some row's steel
Tooth, often it is staggered between row's steel-tooth；The pressure roller axis connection crushes motor, the locular wall for crushing motor and being arranged on pulverizing chamber
Outside；The upper shell bottom is provided with cage rotor, and vent passages are left between cage rotor and upper shell barrel；Cage rotor
Including impeller, the directing vane of connection impeller being connected with rotating shaft；The rotating shaft connects motor, and the motor is arranged on upper shell
Top；Chimney fan is provided with above the cage rotor.
A kind of 2. special powder concentrator of coal mill system as claimed in claim 1, it is characterised in that：Set on the inwall of the pulverizing chamber
There is crushing raised.
A kind of 3. special powder concentrator of coal mill system as claimed in claim 1, it is characterised in that：On the outside of the locular wall of the pulverizing chamber
Provided with placing box, the crushing motor is arranged in placing box.
A kind of 4. special powder concentrator of coal mill system as claimed in claim 1, it is characterised in that：The pulverizing chamber and coarse fodder pipe it
Between be connected deflection cone, the deflection cone is upper coarse and lower fine.
A kind of 5. special powder concentrator of coal mill system as claimed in claim 1, it is characterised in that：Material dress is blown in the pulverizing chamber connection
Put, the blowing device includes blowpipe, the blowpipe connecting fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710900603.0A CN107649240A (en) | 2017-09-28 | 2017-09-28 | The special powder concentrator of coal mill system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710900603.0A CN107649240A (en) | 2017-09-28 | 2017-09-28 | The special powder concentrator of coal mill system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107649240A true CN107649240A (en) | 2018-02-02 |
Family
ID=61117098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710900603.0A Pending CN107649240A (en) | 2017-09-28 | 2017-09-28 | The special powder concentrator of coal mill system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107649240A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113058853A (en) * | 2021-05-18 | 2021-07-02 | 王泽东 | Fine grain wind screen |
-
2017
- 2017-09-28 CN CN201710900603.0A patent/CN107649240A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113058853A (en) * | 2021-05-18 | 2021-07-02 | 王泽东 | Fine grain wind screen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180202 |