CN203525848U - Material level pressure control device of ball grinder - Google Patents
Material level pressure control device of ball grinder Download PDFInfo
- Publication number
- CN203525848U CN203525848U CN201320634390.9U CN201320634390U CN203525848U CN 203525848 U CN203525848 U CN 203525848U CN 201320634390 U CN201320634390 U CN 201320634390U CN 203525848 U CN203525848 U CN 203525848U
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- Prior art keywords
- material level
- ball grinder
- control device
- ball mill
- pressure control
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- Expired - Fee Related
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- 239000000463 material Substances 0.000 title claims abstract description 40
- 239000003245 coal Substances 0.000 claims abstract description 23
- 230000011664 signaling Effects 0.000 claims description 7
- 239000000843 powder Substances 0.000 abstract description 7
- 238000010298 pulverizing process Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000227 grinding Methods 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 description 4
- 206010033799 Paralysis Diseases 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The utility model relates to a material level pressure control device of a ball grinder, and in particular relates to a material level negative-pressure control device of the ball grinder of an intermediate-storage-type coal pulverizing system of a coal-fired boiler. The material level pressure control device comprises the ball grinder, wherein an inlet of the ball grinder is connected with a coal storage bunker through an inlet pipeline; a coal feeder is arranged between the coal storage bunker and an inlet pipeline in a connecting manner; an outlet of the ball grinder is connected with an outlet pipeline. The material level pressure control device is characterized in that a negative pressure measuring point is arranged on the outlet pipeline; a pressure measuring point is arranged on the inlet pipeline; a material level annunciator is arranged below the ball grinder; the negative pressure measuring point, the pressure measuring point and the material level annunciator are respectively connected with a control box; an operating screen is arranged on the control box in the connecting manner. The material level pressure control device has the beneficial effects that the problems that an automatic control signal of a material level of the ball grinder is single and the operational reliability of the ball grinder is poor are solved; the difficulty of powder falling caused by the blocking grinding of the ball grinder is overcome; the drastic fluctuations of the material level are avoided, so that the device is relatively stable in running.
Description
(1) technical field
The utility model relates to a kind of level of material for ball mill pressure control device, particularly a kind of coal-burning boiler intermediate storage-type Strategy of Ball Mill Coal Pulverizing System material level negative pressure control apparatus.
(2) background technology
Intermediate storage-type Strategy of Ball Mill Coal Pulverizing System is a kind of coal powder grinding equipment, and level of material for ball mill is affected by the factors such as the humidity, coal pulverizer coal load quantity, ature of coal variation of system ventilation amount, hot blast rate, cold blast rate, coal-supplying amount, coal.Level of material for ball mill variable quantity is larger, and the automatic control of material level in the past has only adopted an audio frequency control signal, once break down, will cause the stifled mill of ball mill to run powder.Have the problem that level of material for ball mill automatic control signal is single, operational reliability is poor, the security and stability that level of material for ball mill is controlled is automatically low.
(3) utility model content
The utility model is in order to make up the deficiencies in the prior art, provides a kind of and strengthen whole pulverized coal preparation system safety and reliability, guaranteed that material level there will not be big rise and big fall, eliminated the stifled mill of ball mill and run the level of material for ball mill pressure control device of a powder difficult problem.
The utility model is achieved by the following technical solution:
A kind of level of material for ball mill pressure control device, comprise ball mill, ball mill porch connects coal store by inlet duct, between coal store and inlet duct, be connected with feeder, exit is connected with outlet conduit, it is characterized in that: on described outlet conduit, be provided with negative pressure measuring point, on inlet duct, be provided with pressure-measuring-point, ball mill below is provided with material level signalling means, and negative pressure measuring point, pressure-measuring-point and material level signalling means are connected with control cabinet respectively, and control cabinet is connected with operation screen.
On described inlet duct, be in series with hot blast cut-off gate and hot blast adjustment doors, be parallel with cold-air flap.
On described outlet conduit, be connected with temperature point and pressure-measuring-point, be connected with control cabinet respectively.
The beneficial effects of the utility model are: solved the problem that level of material for ball mill automatic control signal is single, operational reliability is poor, can not make whole system paralysis because of a road signal fault, two paths of signals is controlled level of material for ball mill simultaneously, has strengthened the safety and reliability of whole pulverized coal preparation system.The one, eliminate the stifled mill of ball mill and run a powder difficult problem; The 2nd, material level there will not be big rise and big fall, moves more steady.
(4) accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described.
Accompanying drawing 1 is structural representation of the present utility model;
In figure, 1 ball mill, 2 inlet ducts, 3 coal stores, 4 feeders, 5 outlet conduits, 6 negative pressure measuring points, 7 pressure-measuring-points, 8 material level signalling means, 9 control cabinets, 10 operation screens, 11 hot blast cut-off gates, 12 hot blast adjustment doors, 13 cold-air flaps, 14 temperature points.
(5) specific embodiment
Accompanying drawing is a kind of specific embodiment of the present utility model.This embodiment comprises ball mill 1, ball mill 1 porch connects coal store 3 by inlet duct 2, between coal store 3 and inlet duct 2, be connected with feeder 4, exit is connected with outlet conduit 5, on outlet conduit 5, be provided with negative pressure measuring point 6, be provided with pressure-measuring-point 7 on inlet duct 2, ball mill 1 below is provided with material level signalling means 8, negative pressure measuring point 6, pressure-measuring-point 7 and material level signalling means 8 are connected with control cabinet 9 respectively, and control cabinet 9 is connected with operation screen 10.On inlet duct 2, be in series with hot blast cut-off gate 11 and hot blast adjustment doors 12, be parallel with cold-air flap 13.On outlet conduit 5, be connected with temperature point 14 and pressure-measuring-point, be connected with control cabinet 9 respectively.
Adopt a kind of level of material for ball mill pressure control device of the present utility model, on the outlet conduit 5 of ball mill 1 and install a negative pressure measuring point 6 between mill separator additional, this measuring point is in whole pulverized coal preparation system throat, the signal of measuring is accurate and highly sensitive, when ball mill 1 material level just changes, this measuring point data also changes thereupon, can accurately measure out ball mill 1 coal load quantity how many, this pressure signal is introduced to ball mill automatic control system, can guarantee that level of material for ball mill is all the time in controllable state.Increase the new control signal in a road, changed the single control model with audio method of level of material for ball mill, can not make whole system paralysis because of a road signal fault, two paths of signals is controlled level of material for ball mill simultaneously, has strengthened the safety and reliability of whole pulverized coal preparation system.Improved advantage: the one, eliminate the stifled mill of ball mill and run a powder difficult problem; The 2nd, material level there will not be big rise and big fall, moves more steady.The measured hole particular location of negative pressure measuring point 6 is arranged on the pipeline of ball mill 1 outlet wind powder mixture, for preventing that measuring point from stopping up, inclination that Open Side Down 30 degree, after drawing with the common steel tube of diameter ￠ 30mm, then pyrocondensation is that diameter ￠ 12mm steel pipe is introduced pressure transmitter, delivers to control system.
Claims (3)
1. a level of material for ball mill pressure control device, comprise ball mill (1), ball mill (1) porch connects coal store (3) by inlet duct (2), between coal store (3) and inlet duct (2), be connected with feeder (4), exit is connected with outlet conduit (5), it is characterized in that: on described outlet conduit (5), be provided with negative pressure measuring point (6), on inlet duct (2), be provided with pressure-measuring-point (7), ball mill (1) below is provided with material level signalling means (8), negative pressure measuring point (6), pressure-measuring-point (7) is connected with control cabinet (9) respectively with material level signalling means (8), control cabinet (9) is connected with operation screen (10).
2. a kind of level of material for ball mill pressure control device according to claim 1, is characterized in that: on described inlet duct (2), be in series with hot blast cut-off gate (11) and hot blast adjustment doors (12), be parallel with cold-air flap (13).
3. a kind of level of material for ball mill pressure control device according to claim 1, is characterized in that: on described outlet conduit (5), be connected with temperature point (14) and pressure-measuring-point, be connected respectively with control cabinet (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320634390.9U CN203525848U (en) | 2013-10-15 | 2013-10-15 | Material level pressure control device of ball grinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320634390.9U CN203525848U (en) | 2013-10-15 | 2013-10-15 | Material level pressure control device of ball grinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203525848U true CN203525848U (en) | 2014-04-09 |
Family
ID=50412110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320634390.9U Expired - Fee Related CN203525848U (en) | 2013-10-15 | 2013-10-15 | Material level pressure control device of ball grinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203525848U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104785332A (en) * | 2015-04-10 | 2015-07-22 | 广西鱼峰水泥股份有限公司 | Selecting method for temperature measuring point at outlet of ball mill |
| CN108097388A (en) * | 2017-12-27 | 2018-06-01 | 唐山博全实业有限公司 | A kind of ball mill heating plant and heat supply method |
| CN115178339A (en) * | 2022-04-11 | 2022-10-14 | 北京智冶互联科技有限公司 | Automatic control method and device for rolling operation, electronic equipment and medium |
-
2013
- 2013-10-15 CN CN201320634390.9U patent/CN203525848U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104785332A (en) * | 2015-04-10 | 2015-07-22 | 广西鱼峰水泥股份有限公司 | Selecting method for temperature measuring point at outlet of ball mill |
| CN108097388A (en) * | 2017-12-27 | 2018-06-01 | 唐山博全实业有限公司 | A kind of ball mill heating plant and heat supply method |
| CN115178339A (en) * | 2022-04-11 | 2022-10-14 | 北京智冶互联科技有限公司 | Automatic control method and device for rolling operation, electronic equipment and medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Building 103-3, building 15, Qilu cultural and creative base, No.101, Shunfeng Road, Jinan area, China (Shandong) pilot Free Trade Zone, Jinan City, Shandong Province Patentee after: Shandong AoMiao Technology Development Co.,Ltd. Address before: 250101 Shandong city of Ji'nan province high tech Zone Xinyu Road on the west side of the AB century wealth center room 602 Patentee before: SHANDONG AONENG ELECTRIC POWER SCIENCE & TECHNOLOGY Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |