CN106090977A - Offset-type microfine coal grinder - Google Patents
Offset-type microfine coal grinder Download PDFInfo
- Publication number
- CN106090977A CN106090977A CN201610690895.5A CN201610690895A CN106090977A CN 106090977 A CN106090977 A CN 106090977A CN 201610690895 A CN201610690895 A CN 201610690895A CN 106090977 A CN106090977 A CN 106090977A
- Authority
- CN
- China
- Prior art keywords
- coal
- screening device
- coal dust
- assembly
- grades
- 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.)
- Granted
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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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses a kind of offset-type microfine coal grinder, including support, screw auger, coal fines screening device, grinding assembly, coal grain recurrent canal, coal feeding bucket, two grades of outlet tubes of coal dust；Grinding assembly is fixedly connected on support；Two grades of outlet tubes of coal fines screening device upper end outlet and coal dust connect, and lower end is provided with coal dust input pipe；In the coal grain recurrent canal of offset-type microfine coal grinder, between coal fines screening device and two grades of outlet tubes of coal dust, it is respectively equipped with nonmetal flexible compensator；Further improvement is that: be provided with between the flange of flange assembly be superimposed, the adjustment pad I of adjustable cross-sectional flow area, adjust pad II.The present invention has the ability compensating the pipeline thermal walking caused because expanding with heat and contract with cold, and substantially reduces heat damage；Coal dust air pressure in feeding two grades of outlet tubes of coal dust can be adjusted conveniently and efficiently.
Description
Technical field
The present invention relates to coal dust and manufacture field, particularly relate to a kind of pulverized coal grinding machine.
Background technology
For improving 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 input in chain-grate boiler burner hearth after breeze atomizing, and this mode can significantly improve efficiency of combustion.But pulverized coal grinding
Can the pipeline that the output channel of machine and secondary grind be frequently subjected to the impact expanded with heat and contract with cold and damaged, thus improve coal dust
The structure of grinder, thus substantially reducing heat damage is the problem being badly in need of research.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, propose a kind of pipeline thermal walking that can compensate for and causing because expanding with heat and contract with cold
Offset-type microfine coal grinder.
The present invention is achieved through the following technical solutions technical goal.
Offset-type microfine coal grinder, returns including support, screw auger, coal fines screening device, grinding assembly, coal grain
Pipe, coal feeding bucket, two grades of outlet tubes of coal dust；Described grinding assembly is fixedly connected on support；Described screw auger is arranged on grinding
One end of assembly；Described coal feeding bucket is connected to the coal feed point of screw auger end；Described coal fines screening device upper end outlet and coal dust
Two grades of outlet tube connections, lower end is provided with coal dust input pipe；Described grinding assembly top is provided with coal dust one-level outlet tube, coal dust one-level
Outlet tube is connected by flange assembly with coal dust input pipe；Described coal grain recurrent canal upper end connects with coal fines screening device lower end, its
The coal feed point of connection screw auger end, lower end；To coal fines screening device and coal grain recurrent canal junction bottom described coal fines screening device
Tilt；It thes improvement is that: in the coal grain recurrent canal of offset-type microfine coal grinder, coal fines screening device defeated with coal dust two grades
Go out to be respectively equipped with between pipe nonmetal flexible compensator.
In said structure, described nonmetal flexible compensator is the unicast rubber compensator of interior painting wear-resistant ceramic gel.
It is provided with adjustment pad I, the adjustment pad II being superimposed between the flange of described flange assembly, uses bolt assembly
Pad I will be adjusted, adjust between the flange that pad II is fastened on flange assembly；Described adjustment pad I periphery is provided with for bolt
The kidney-shaped connecting hole that assembly connects；Described adjustment pad II periphery is provided with the connecting hole connected for bolt assembly；Described adjustment
It is respectively equipped with several positions corresponding, around the uniform hole of flange assembly central axis in the middle part of pad I, adjustment pad II.
In said structure, described adjustment pad I outer ring surface fixes attended operation handle.
The present invention compared with prior art, has the positive effect that:
1. the present invention arranges nonmetal flexible compensator, and have that extraction duct causes because expanding with heat and contract with cold is axial, laterally and angular
Thermal walking, it is ensured that the safety of pulverized coal channel, thus significantly extend the service life of pulverized coal grinding machine.
2. coal grain recurrent canal upper end connects with coal fines screening device bottom, and coal fines screening device bottom is again with a constant inclination
The bottom of rake angle, the coal grain entered in coal fines screening device fully enters along the bottom that coal fines screening device tilts 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, it is ensured that coal dust
Carry unimpeded.
3. it is respectively equipped with several positions in the middle part of adjustment pad I, adjustment pad II corresponding, around flange assembly center
The uniform hole of axis, rotates and adjusts pad I, adjusts pad I partial occlusion and adjusts the hole of pad II so that cross-sectional flow area occurs
Change, thus reach to adjust the purpose of coal dust air pressure in feeding two grades of outlet tubes of coal dust, by adjusting, microfine coal can be sent
Enter in two grades of outlet tubes of coal dust.
4. adjust and on pad I outer ring surface, fix attended operation handle, convenient adjustment.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram.
Fig. 2 is Fig. 1 left view.
Fig. 3 is I enlarged schematic partial view in Fig. 2.
Fig. 4 is the A-A sectional view in Fig. 3.
Fig. 5 is the B-B sectional view in Fig. 3.
Detailed description of the invention
Below according to accompanying drawing and the invention will be further described in conjunction with the embodiments.
The grinder of offset-type microfine coal shown in accompanying drawing, including support 1, screw auger 2, coal fines screening device 3, grinding assembly
4, coal grain recurrent canal 5, coal feeding bucket 6, two grades of outlet tubes 7 of coal dust；Grinding assembly 4 is fixedly connected on support 1；Described screw auger
2 one end being arranged on grinding assembly 4；Coal feeding bucket 6 is connected to the coal feed point of screw auger 2 end；Coal fines screening device 3 upper end outlet
Connecting with two grades of outlet tubes 7 of coal dust, lower end is provided with coal dust input pipe 3.1；Grinding assembly 4 top is provided with coal dust one-level outlet tube
4.1, coal dust one-level outlet tube 4.1 is connected by flange assembly 9 with coal dust input pipe 3.1；Coal grain recurrent canal 5 upper end and pulverized coal sieve
Divide the connection of device 3 lower end, the coal feed point of connection screw auger 2 end, its lower end；Bottom coal fines screening device 3 to coal fines screening device 3 with
Coal grain recurrent canal 5 junction tilts.In coal grain recurrent canal 5, it is respectively equipped with between coal fines screening device 3 and two grades of outlet tubes 7 of coal dust
Nonmetal flexible compensator 8, in the present embodiment, compensating joint 8 is the unicast rubber compensator of interior painting wear-resistant ceramic gel.
It is provided with adjustment pad I 9.1, the adjustment pad II 9.2 being superimposed between the flange of flange assembly 9, uses bolt
Assembly 9.4 will adjust pad I 9.1, adjust between the flange that pad II 9.2 is fastened on flange assembly 9；Adjust pad I 9.1 periphery
It is provided with the kidney-shaped connecting hole connected for bolt assembly 9.4；Adjustment pad II 9.2 periphery is provided with and connects for bolt assembly 9.4
Connecting hole；It is respectively equipped with several positions corresponding, around flange assembly 9 in the middle part of adjustment pad I 9.1, adjustment pad II 9.2
The uniform hole of central axis.Adjust and fix attended operation handle (9.3) on pad I (9.1) outer ring surface.
Claims (4)
1. an offset-type microfine coal grinder, including support (1), screw auger (2), coal fines screening device (3), grinding assembly
(4), coal grain recurrent canal (5), coal feeding bucket (6), two grades of outlet tubes (7) of coal dust；Described grinding assembly (4) is fixedly connected on support
(1) on；Described screw auger (2) is arranged on one end of grinding assembly (4)；Described coal feeding bucket (6) is connected to screw auger (2) end
The coal feed point in portion；Two grades of outlet tubes (7) of described coal fines screening device (3) upper end outlet and coal dust connect, and lower end is provided with coal dust input
Pipe (3.1)；Described grinding assembly (4) top is provided with coal dust one-level outlet tube (4.1), coal dust one-level outlet tube (4.1) and coal dust
Input pipe (3.1) is connected by flange assembly (9)；Described coal grain recurrent canal (5) upper end connects with coal fines screening device (3) lower end,
The coal feed point of connection screw auger (2) end, its lower end；Described coal fines screening device (3) bottom is to coal fines screening device (3) and coal grain
Recurrent canal (5) junction tilts；It is characterized in that: in described coal grain recurrent canal (5), coal fines screening device (3) defeated with coal dust two grades
Go out and be respectively equipped with nonmetal flexible compensator (8) between pipe (7).
2. according to the offset-type microfine coal grinder described in claims 1, it is characterised in that: described nonmetal flexible compensates
Device (8) is the unicast rubber compensator of interior painting wear-resistant ceramic gel.
3. according to the offset-type microfine coal grinder described in claims 1 or 2, it is characterised in that: described flange assembly (9)
Flange between be provided be superimposed adjustment pad I (9.1), adjust pad II (9.2), with bolt assembly (9.4) will adjust
Whole pad I (9.1), adjustment pad II (9.2) are fastened between the flange of flange assembly (9)；Described adjustment pad I (9.1) week
While be provided with the kidney-shaped connecting hole connected for bolt assembly (9.4)；Described adjustment pad II (9.2) periphery is provided with for bolt group
The connecting hole that part (9.4) connects；Described adjustment pad I (9.1), adjustment pad II (9.2) middle part are respectively equipped with several positions
Corresponding, around the uniform hole of flange assembly (9) central axis.
4. according to the offset-type microfine coal grinder described in claims 3, it is characterised in that: described adjustment pad I (9.1)
Attended operation handle (9.3) is fixed on outer ring surface.
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 true CN106090977A (en) | 2016-11-09 |
| CN106090977B 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 |
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| 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 |
|---|
| 孙轶卿: "非金属膨胀节在大型燃煤电站烟风道上的应用分析", 《技术交流与应用》 * |
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| Publication number | Publication date |
|---|---|
| CN106090977B (en) | 2018-06-19 |
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