CN106090977B - Offset-type microfine coal grinder - Google Patents
Offset-type microfine coal grinder Download PDFInfo
- Publication number
- CN106090977B CN106090977B CN201610690895.5A CN201610690895A CN106090977B CN 106090977 B CN106090977 B CN 106090977B CN 201610690895 A CN201610690895 A CN 201610690895A CN 106090977 B CN106090977 B CN 106090977B
- Authority
- CN
- China
- Prior art keywords
- coal
- screening device
- adjust pad
- coal dust
- efferent duct
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K1/00—Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C1/00—Combustion apparatus specially adapted for combustion of two or more kinds of fuel simultaneously or alternately, at least one kind of fuel being either a fluid fuel or a solid fuel suspended in a carrier gas or air
- F23C1/06—Combustion apparatus specially adapted for combustion of two or more kinds of fuel simultaneously or alternately, at least one kind of fuel being either a fluid fuel or a solid fuel suspended in a carrier gas or air lump and pulverulent fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
- F23K3/02—Pneumatic feeding arrangements, i.e. by air blast
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2201/00—Pretreatment of solid fuel
- F23K2201/10—Pulverizing
- F23K2201/1006—Mills adapted for use with furnaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2203/00—Feeding arrangements
- F23K2203/006—Fuel distribution and transport systems for pulverulent fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2203/00—Feeding arrangements
- F23K2203/20—Feeding/conveying devices
- F23K2203/201—Feeding/conveying devices using pneumatic means
Abstract
The invention discloses a kind of offset-type microfine coal grinder, including engine base, screw auger, coal fines screening device, grinding assembly, coal grain recurrent canal, coal feeding bucket, coal dust two level efferent duct；Grinding assembly is fixedly connected on engine base；Coal fines screening device upper end outlet is connected with coal dust two level efferent duct, and lower end is equipped with coal dust input pipe；Nonmetal flexible compensator is respectively equipped in the coal grain recurrent canal of offset-type microfine coal grinder, between coal fines screening device and coal dust two level efferent duct；Further improvement lies in that：Adjust pad I, the adjust pad II of the cross-sectional flow area that is superimposed, can adjust are equipped between the flange of flange assembly.The present invention has the ability of compensation pipeline thermal walking caused by expanding with heat and contract with cold, and substantially reduces heat damage；It can conveniently and efficiently adjust and be sent into coal dust air pressure in coal dust two level efferent duct.
Description
Technical field
The present invention relates to coal dust manufacturing field more particularly to a kind of pulverized coal grinding machines.
Background technology
To improve efficiency of combustion, existing chain-grate boiler is typically equipped with pulverized coal grinding machine, after coal is worn into coal dust, passes through coal
Powder input pipe will be inputted after breeze atomizing in chain-grate boiler burner hearth, and this mode can significantly improve efficiency of combustion.But pulverized coal grinding
Can the output channel of machine and the pipeline of secondary grinding be frequently subjected to the influence expanded with heat and contract with cold and be damaged, thus improve coal dust
The construction of grinder is to be badly in need of the subject of research so as to substantially reduce heat damage.
Invention content
The pipeline thermal walking caused by expanding with heat and contract with cold is can compensate in view of the deficiencies of the prior art, the present invention proposes a kind of
Offset-type microfine coal grinder.
The present invention is achieved through the following technical solutions technical goal.
Offset-type microfine coal grinder is returned including engine base, screw auger, coal fines screening device, grinding assembly, coal grain
Pipe, coal feeding bucket, coal dust two level efferent duct；The grinding assembly is fixedly connected on engine base；The screw auger is arranged on grinding
One end of component；The coal feeding bucket is connected to the coal feed point of screw auger end；The coal fines screening device upper end outlet and coal dust
Two level efferent duct connects, and lower end is equipped with coal dust input pipe；The grinding assembly top is equipped with coal dust level-one efferent duct, coal dust level-one
Efferent duct is connect with coal dust input pipe by flange assembly；The coal grain recurrent canal upper end is connected with coal fines screening device lower end,
The coal feed point of lower end connection screw auger end；The coal fines screening device bottom is to coal fines screening device and coal grain recurrent canal junction
It tilts；It is theed improvement is that：In the coal grain recurrent canal of offset-type microfine coal grinder, coal fines screening device and coal dust two level it is defeated
Nonmetal flexible compensator is respectively equipped between outlet pipe.
In above structure, the nonmetal flexible compensator is the interior unicast rubber compensator for applying wear-resistant ceramic gel.
Adjust pad I, the adjust pad being superimposed are equipped in above structure, between the flange of the flange assembly
II, adjust pad I, adjust pad II are fastened between the flange of flange assembly with bolt assembly；I periphery of adjust pad
Equipped with the kidney-shaped connecting hole connected for bolt assembly；II periphery of adjust pad is equipped with the connection for bolt assembly connection
Hole；The adjust pad I, the middle part of adjust pad II be respectively equipped with several positions it is corresponding, around flange assembly central axis
Uniform hole.
In above structure, operation handle is fixedly connected on I outer ring surface of adjust pad.
Compared with prior art, the present invention it has the positive effect that：
1. present invention setting nonmetal flexible compensator, have extraction duct it is axial because expanding with heat and contract with cold caused by, it is lateral and
Angular thermal walking ensure that the safety of pulverized coal channel, so as to significantly extend the service life of pulverized coal grinding machine.
2. coal grain recurrent canal upper end is connected with coal fines screening device bottom, coal fines screening device bottom end is with a constant inclination again
The bottom of rake angle is fully entered into the coal grain in coal fines screening device along the inclined bottom of coal fines screening device through coal grain recurrent canal
The coal feed point of screw auger end carries out secondary grinding, will not block the coal dust input port of coal fines screening device lower end, ensures coal dust
It conveys unimpeded.
3. adjust pad I, adjust pad II middle part be respectively equipped with several positions it is corresponding, around flange assembly center
The uniform hole of axis rotates adjust pad I, the hole of I partial occlusion adjust pad II of adjust pad so that cross-sectional flow area occurs
Variation, so as to achieve the purpose that coal dust air pressure in coal dust two level efferent duct is sent into adjustment, by adjusting microfine coal can be sent
Enter in coal dust two level efferent duct.
4. being fixedly connected with operation handle on I outer ring surface of adjust pad, facilitate adjustment.
Description of the drawings
Fig. 1 is schematic structural view of the invention.
Fig. 2 is Fig. 1 left views.
Fig. 3 is I enlarged schematic partial view in Fig. 2.
Fig. 4 is the A-A sectional views in Fig. 3.
Fig. 5 is the B-B sectional views in Fig. 3.
Specific embodiment
The invention will be further described below according to attached drawing and in conjunction with the embodiments.
The grinder of offset-type microfine coal shown in attached drawing, including engine base 1, screw auger 2, coal fines screening device 3, grinding assembly
4th, coal grain recurrent canal 5, coal feeding bucket 6, coal dust two level efferent duct 7；Grinding assembly 4 is fixedly connected on engine base 1；The screw auger
2 are arranged on one end of grinding assembly 4；Coal feeding bucket 6 is connected to the coal feed point of 2 end of screw auger；3 upper end outlet of coal fines screening device
It is connected with coal dust two level efferent duct 7, lower end is equipped with coal dust input pipe 3.1；4 top of grinding assembly is equipped with coal dust level-one efferent duct
4.1, coal dust level-one efferent duct 4.1 is connect with coal dust input pipe 3.1 by flange assembly 9；5 upper end of coal grain recurrent canal and pulverized coal sieve
Divide the connection of 3 lower end of device, the coal feed point of lower end 2 end of connection screw auger；3 bottom of coal fines screening device to coal fines screening device 3 with
5 junction of coal grain recurrent canal tilts.It is respectively equipped in coal grain recurrent canal 5, between coal fines screening device 3 and coal dust two level efferent duct 7
Nonmetal flexible compensator 8, in the present embodiment, nonmetal flexible compensator 8 is mended for the interior unicast rubber for applying wear-resistant ceramic gel
Repay device.
Adjust pad I 9.1, the adjust pad II 9.2 being superimposed are equipped between the flange of flange assembly 9, uses bolt
Adjust pad I 9.1, adjust pad II 9.2 are fastened between the flange of flange assembly 9 by component 9.4；I 9.1 periphery of adjust pad
Equipped with the kidney-shaped connecting hole connected for bolt assembly 9.4；II 9.2 periphery of adjust pad is equipped with and is connected for bolt assembly 9.4
Connecting hole；Adjust pad I 9.1, the middle part of adjust pad II 9.2 be respectively equipped with several positions it is corresponding, around flange assembly 9
The uniform hole of central axis.Operation handle 9.3 is fixedly connected on I 9.1 outer ring surface of adjust pad.
Claims (2)
1. a kind of offset-type microfine coal grinder, including engine base（1）, screw auger（2）, coal fines screening device（3）, grinding assembly
（4）, coal grain recurrent canal（5）, coal feeding bucket（6）, coal dust two level efferent duct（7）；The grinding assembly（4）It is fixedly connected on engine base
（1）On；The screw auger（2）It is arranged on grinding assembly（4）One end；The coal feeding bucket（6）It is connected to screw auger（2）End
The coal feed point in portion；The coal fines screening device（3）Upper end outlet and coal dust two level efferent duct（7）Connection, lower end are inputted equipped with coal dust
Pipe（3.1）；The grinding assembly（4）Top is equipped with coal dust level-one efferent duct（4.1）, coal dust level-one efferent duct（4.1）With coal dust
Input pipe（3.1）Pass through flange assembly（9）Connection；The coal grain recurrent canal（5）Upper end and coal fines screening device（3）Lower end connects,
Its lower end connects screw auger（2）The coal feed point of end；The coal fines screening device（3）Bottom is to coal fines screening device（3）With coal grain
Recurrent canal（5）Junction tilts, the coal grain recurrent canal（5）In, coal fines screening device（3）With coal dust two level efferent duct（7）Between
It is respectively equipped with nonmetal flexible compensator（8）；The nonmetal flexible compensator（8）For the interior unicast rubber for applying wear-resistant ceramic gel
Glue compensator；It is characterized in that：The flange assembly（9）Flange between be equipped with the adjust pad I that is superimposed（9.1）、
Adjust pad II（9.2）, use bolt assembly（9.4）By adjust pad I（9.1）, adjust pad II（9.2）It is fastened on flange assembly
（9）Flange between；The adjust pad I（9.1）Periphery is equipped with for bolt assembly（9.4）The kidney-shaped connecting hole of connection；Institute
State adjust pad II（9.2）Periphery is equipped with for bolt assembly（9.4）The connecting hole of connection；The adjust pad I（9.1）, adjust
Whole gasket II（9.2）Middle part be respectively equipped with several positions it is corresponding, around flange assembly（9）The uniform hole of central axis.
2. offset-type microfine coal grinder according to claim 1, it is characterised in that：The adjust pad I（9.1）Outside
Operation handle is fixedly connected on anchor ring（9.3）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610690895.5A CN106090977B (en) | 2016-08-20 | 2016-08-20 | Offset-type microfine coal grinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610690895.5A CN106090977B (en) | 2016-08-20 | 2016-08-20 | Offset-type microfine coal grinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106090977A CN106090977A (en) | 2016-11-09 |
| CN106090977B true CN106090977B (en) | 2018-06-19 |
Family
ID=58070544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610690895.5A Active CN106090977B (en) | 2016-08-20 | 2016-08-20 | Offset-type microfine coal grinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106090977B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB317081A (en) * | 1928-08-11 | 1930-08-21 | Int Comb Eng Corp | Improvements in pulverising mills |
| US4193554A (en) * | 1977-10-08 | 1980-03-18 | Klockner-Humboldt-Deutz Ag | Method and apparatus for the drying and fine-grinding of coal |
| SU802713A1 (en) * | 1978-07-10 | 1981-02-07 | Центральное Конструкторское Бюро"Главэнергоремонта" Министерстваэнергетики И Электрификации Cccp | Dust system |
| CN202343459U (en) * | 2011-09-19 | 2012-07-25 | 北京华清优燃科技有限公司 | Dynamic coarse powder separator |
| CN103203272A (en) * | 2013-04-15 | 2013-07-17 | 黄立新 | Storage type superfine pulverized coal preparation system in steel ball coal mill |
| CN204074519U (en) * | 2014-09-12 | 2015-01-07 | 彭维明 | Pulverized coal preparation system New Type of Separator |
-
2016
- 2016-08-20 CN CN201610690895.5A patent/CN106090977B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB317081A (en) * | 1928-08-11 | 1930-08-21 | Int Comb Eng Corp | Improvements in pulverising mills |
| US4193554A (en) * | 1977-10-08 | 1980-03-18 | Klockner-Humboldt-Deutz Ag | Method and apparatus for the drying and fine-grinding of coal |
| SU802713A1 (en) * | 1978-07-10 | 1981-02-07 | Центральное Конструкторское Бюро"Главэнергоремонта" Министерстваэнергетики И Электрификации Cccp | Dust system |
| CN202343459U (en) * | 2011-09-19 | 2012-07-25 | 北京华清优燃科技有限公司 | Dynamic coarse powder separator |
| CN103203272A (en) * | 2013-04-15 | 2013-07-17 | 黄立新 | Storage type superfine pulverized coal preparation system in steel ball coal mill |
| CN204074519U (en) * | 2014-09-12 | 2015-01-07 | 彭维明 | Pulverized coal preparation system New Type of Separator |
Non-Patent Citations (1)
| Title |
|---|
| 非金属膨胀节在大型燃煤电站烟风道上的应用分析;孙轶卿;《技术交流与应用》;20111130(第11期);第76-78页 * |
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| Publication number | Publication date |
|---|---|
| CN106090977A (en) | 2016-11-09 |
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