CN109603994A - A kind of low speed coal mill energy saver - Google Patents
A kind of low speed coal mill energy saver Download PDFInfo
- Publication number
- CN109603994A CN109603994A CN201910045798.4A CN201910045798A CN109603994A CN 109603994 A CN109603994 A CN 109603994A CN 201910045798 A CN201910045798 A CN 201910045798A CN 109603994 A CN109603994 A CN 109603994A
- Authority
- CN
- China
- Prior art keywords
- ball
- minor diameter
- liner plate
- abrading
- low speed
- 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
Links
- 239000003245 coal Substances 0.000 title claims abstract description 14
- 230000000694 effects Effects 0.000 abstract description 8
- 238000005299 abrasion Methods 0.000 description 3
- 239000002817 coal dust Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/22—Lining for containers
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses a kind of low speed coal mill energy saver, including liner plate, the liner plate is made of symmetrical two step, and junction surface is circular arc between two ladders above and below the step, and the arc diameter is greater than minor diameter ball radius.To solve the problem of that the bad liner plate of prior art grinding effect and minor diameter abrading-ball are prone to wear.
Description
Technical field
The present invention relates to power generation field more particularly to a kind of low speed coal mill energy savers.
Background technique
Step liner plate cooperation steel ball is arranged in coal-grinding machine drum body and comes coal-grinding, step lining for prior art low speed coal mill
Plate working principle is briefly described as below: when the liner plate that one piece is made of there are two step, each step three ladders is transported clockwise
When dynamic, when movement, the height H of the ladder as described in step is all larger than the radius of minor diameter abrading-ball, respectively less than major diameter abrading-ball
Radius, therefore the half of minor diameter abrading-ball is all larger than in machine, therefore major diameter abrading-ball cannot stop on any one ladder in machine
It stays, and minor diameter abrading-ball can very easily sink on the step face of the step, is formed in ball mill barrel inner surface more
Major diameter abrading-ball and minor diameter abrading-ball are promoted to eminence by a concave arc shape being made of minor diameter abrading-ball and the step simultaneously
After be detached from the step, realization is crushed material.
Problem of the existing technology is that the angle on liner plate between ladder is right angle, this right angle is arranged so that small straight
There are one between diameter abrading-ball and liner plate to be unable to attaching space, so that grinding effect is bad, it is thicker to grind coal dust；Minor diameter
Abrading-ball and liner plate contact area are small, and minor diameter abrading-ball and liner plate contact point impact force are big, and liner plate and minor diameter abrading-ball is made to be easy mill
Damage, results in the need for often replacing minor diameter abrading-ball and liner plate.
Summary of the invention
The technical problem to be solved by the present invention is providing a kind of low speed coal mill energy saver, ground with solving the prior art
Grind the problem of effect is bad, and liner plate and minor diameter abrading-ball are prone to wear.
The technical scheme is that a kind of low speed coal mill energy saver, including liner plate, the liner plate is by bilateral symmetry
Two steps composition, junction surface is circular arc to the step between two ladders up and down, and the arc diameter is greater than minor diameter mill
Bulb diameter.
Preferably, the ladder at least 2 or more.
Preferably, the ladder height is all larger than the diameter of minor diameter abrading-ball, is greater than minor diameter abrading-ball radius, is less than big straight
The radius of diameter abrading-ball.
Preferably, the ladder width is all larger than 2 times of √ of the diameter of minor diameter abrading-ball.
The beneficial effects of the present invention are:
Compared with prior art, the present invention is by by junction surface is set as circular arc between two ladders above and below step, first is that
It is unable to attaching space existing for eliminating between minor diameter abrading-ball and liner plate, grinding effect is improved, avoids the biggish coal of particle
Grain, which is stuck in, wherein causes grinding effect bad；Second is that increasing the contact area of minor diameter abrading-ball and liner plate, grinding effect is improved
Rate reduces the abrasion of liner plate and minor diameter abrading-ball.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the schematic diagram that two small right angle abrading-ball circle center distances of the invention calculate；
In figure: 1 cylinder, 2 liner plate bottom plates, 3 steps, 4 ladders.
Specific embodiment
With reference to the accompanying drawing and invention is described further in specific embodiment:
With reference to Fig. 1, a kind of low speed coal mill energy saver, including liner plate, the liner plate is by 3 groups of symmetrical two step
At junction surface is circular arc between about 3 two ladder 4 of step, and the arc diameter is greater than minor diameter ball radius.Lining
Plate is mounted by means of bolts on liner plate bottom plate 2, and liner plate bottom plate 2 is fixedly mounted on 1 inner wall of cylinder further through bolt.First is that going
It is unable to attaching space in addition to existing between minor diameter abrading-ball and liner plate, grinding effect is improved, avoids the biggish coal grain of particle
Being stuck in wherein causes grinding effect bad；Second is that the contact area of minor diameter abrading-ball and liner plate is increased, minor diameter abrading-ball abrading-ball
The pressure of contact surface between liner plate reduces, and reduces the abrasion of liner plate and minor diameter abrading-ball.
Preferably, the ladder 4 at least 2 or more.More ladders can carry more minor diameter abrading-balls, so that
Crushing efficiency is promoted.
Preferably, 4 height of ladder is all larger than the diameter of minor diameter abrading-ball, is greater than minor diameter abrading-ball radius, is less than big
The radius of diameter abrading-ball.When work, since radius is less than 4 height of ladder, minor diameter abrading-ball center is in minor diameter abrading-ball
It is bad because gravity center instability drops out ladder 4 under 4 short transverse of ladder, simultaneously as 4 height of ladder is less than minor diameter abrading-ball
Diameter avoids major diameter abrading-ball from directly hitting ladder so that the right angle highlight of ladder 4 is under the protection of minor diameter abrading-ball
4 right angle highlight reduces the abrasion of ladder 4.
Preferably, 4 width of ladder is all larger than 2 times of √ of the diameter of minor diameter abrading-ball.As shown in Fig. 2, it is wide to set ladder 4
Degree is L, and minor diameter abrading-ball radius is r, and two ball circle center distance d are d=√ 2L, and as d >=2r, two balls will not just be in contact and cause
Minor diameter abrading-ball cannot come into full contact with ladder 4, therefore can be derived by the minor diameter abrading-ball as L >=√ 2r can be with rank
Ladder 4 comes into full contact with, multiple minor diameter abrading-balls can with 4 impacting coal dust of ladder, to promote grinding efficiency.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (4)
1. a kind of low speed coal mill energy saver, including liner plate, the liner plate is made of symmetrical two step (3), special
Sign is: junction surface is circular arc to the step (3) between two ladders (4) up and down, and the arc diameter is greater than minor diameter mill
Bulb diameter.
2. low speed coal mill energy saver according to claim 1, it is characterised in that: the ladder (4) at least 2 with
On.
3. low speed coal mill energy saver according to claim 1, it is characterised in that: the ladder (4) is highly all larger than
The diameter of minor diameter abrading-ball is greater than minor diameter abrading-ball radius, less than the radius of major diameter abrading-ball.
4. low speed coal mill energy saver according to claim 1, it is characterised in that: ladder (4) width is all larger than
The diameter of minor diameter abrading-ballTimes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910045798.4A CN109603994A (en) | 2019-01-17 | 2019-01-17 | A kind of low speed coal mill energy saver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910045798.4A CN109603994A (en) | 2019-01-17 | 2019-01-17 | A kind of low speed coal mill energy saver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109603994A true CN109603994A (en) | 2019-04-12 |
Family
ID=66019785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910045798.4A Pending CN109603994A (en) | 2019-01-17 | 2019-01-17 | A kind of low speed coal mill energy saver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109603994A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU459253A1 (en) * | 1973-03-30 | 1975-02-05 | Всесоюзный Ордена Трудового Красного Знамени Научно-Исследовательский И Проектный Институт Механической Обработки Полезных Ископаемых | Lining for ball mills |
| CN101767047A (en) * | 2010-03-12 | 2010-07-07 | 湖南红宇耐磨新材料股份有限公司 | Stepped shell liner for ball mill |
| CN202410766U (en) * | 2012-01-15 | 2012-09-05 | 湖南晟通科技集团有限公司 | Lining plate of ball mill |
| CN203853129U (en) * | 2014-05-23 | 2014-10-01 | 顾开明 | Corrugated grading lining plate |
| CN204710463U (en) * | 2015-05-28 | 2015-10-21 | 江苏首盾耐磨材料有限公司 | The comprehensive multistage energy-saving liner plate of a kind of low speed coal mill |
| CN205797385U (en) * | 2016-07-08 | 2016-12-14 | 徐州鑫华耐磨材料有限公司 | A kind of energy-efficient liner plate of Novel asymmetric ladder |
| CN205797382U (en) * | 2016-06-30 | 2016-12-14 | 徐州鑫华耐磨材料有限公司 | A kind of power plant coal mountain energy-conservation liner plate of type |
| CN206121859U (en) * | 2016-10-10 | 2017-04-26 | 徐州九鼎机电总厂 | Energy -conserving welt of compound wave form of ladder and wave form |
| CN107029839A (en) * | 2017-06-14 | 2017-08-11 | 沈国青 | A kind of cylinder lining plate of ball mill |
| CN207222058U (en) * | 2017-09-15 | 2018-04-13 | 株洲长江特种材料有限公司 | A kind of ball mill and its cylinder lining |
| CN207371631U (en) * | 2017-09-30 | 2018-05-18 | 王东善 | A kind of energy saving coal pulverizer |
| CN210079688U (en) * | 2019-01-17 | 2020-02-18 | 中国电建集团贵州电力设计研究院有限公司 | High efficiency steel ball coal pulverizer economizer |
-
2019
- 2019-01-17 CN CN201910045798.4A patent/CN109603994A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU459253A1 (en) * | 1973-03-30 | 1975-02-05 | Всесоюзный Ордена Трудового Красного Знамени Научно-Исследовательский И Проектный Институт Механической Обработки Полезных Ископаемых | Lining for ball mills |
| CN101767047A (en) * | 2010-03-12 | 2010-07-07 | 湖南红宇耐磨新材料股份有限公司 | Stepped shell liner for ball mill |
| CN202410766U (en) * | 2012-01-15 | 2012-09-05 | 湖南晟通科技集团有限公司 | Lining plate of ball mill |
| CN203853129U (en) * | 2014-05-23 | 2014-10-01 | 顾开明 | Corrugated grading lining plate |
| CN204710463U (en) * | 2015-05-28 | 2015-10-21 | 江苏首盾耐磨材料有限公司 | The comprehensive multistage energy-saving liner plate of a kind of low speed coal mill |
| CN205797382U (en) * | 2016-06-30 | 2016-12-14 | 徐州鑫华耐磨材料有限公司 | A kind of power plant coal mountain energy-conservation liner plate of type |
| CN205797385U (en) * | 2016-07-08 | 2016-12-14 | 徐州鑫华耐磨材料有限公司 | A kind of energy-efficient liner plate of Novel asymmetric ladder |
| CN206121859U (en) * | 2016-10-10 | 2017-04-26 | 徐州九鼎机电总厂 | Energy -conserving welt of compound wave form of ladder and wave form |
| CN107029839A (en) * | 2017-06-14 | 2017-08-11 | 沈国青 | A kind of cylinder lining plate of ball mill |
| CN207222058U (en) * | 2017-09-15 | 2018-04-13 | 株洲长江特种材料有限公司 | A kind of ball mill and its cylinder lining |
| CN207371631U (en) * | 2017-09-30 | 2018-05-18 | 王东善 | A kind of energy saving coal pulverizer |
| CN210079688U (en) * | 2019-01-17 | 2020-02-18 | 中国电建集团贵州电力设计研究院有限公司 | High efficiency steel ball coal pulverizer economizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190412 |
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| RJ01 | Rejection of invention patent application after publication |