CN104001592A - Water spraying device for cement grinding mill - Google Patents
Water spraying device for cement grinding mill Download PDFInfo
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- CN104001592A CN104001592A CN201310565094.2A CN201310565094A CN104001592A CN 104001592 A CN104001592 A CN 104001592A CN 201310565094 A CN201310565094 A CN 201310565094A CN 104001592 A CN104001592 A CN 104001592A
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Abstract
The invention discloses a water spraying device for a cement grinding mill, and relates to the technical field of cement device manufacturing. The water spraying device comprises a regulating water valve, an air compressor and a PLC control system. A tap water inlet pipe is connected with an electromagnetic valve controlled by the PLC control system. The electromagnetic valve is connected with one end of the regulating water valve. The other end of the regulating water valve is connected with the air compressor and a mill feeding water inlet pipe. An inspection valve is connected into a pipeline through which the electromagnetic valve and the regulating water valve are connected. A pressure gauge is arranged on a pipeline through which the regulating water valve and the mill feeding water inlet pipe are connected. The water spraying device can solve the problem that due to the fact that the temperature inside the cement grinding mill is excessively high, the quality of cement is influenced and the grinding efficiency is lowered, and the problem that due to the fact that the device maintenance rate is high, the running rate of a grinding machine is low and the energy consumption of the grinding machine is high.
Description
Technical field
The present invention relates to cement equipment manufacturing technology field, especially a kind of for regulating the water injector of temperature in cement grinding mill mill.
Background technology
Cement go out to grind the important parameter that temperature is cement grinding quality control, carry out in the process of cement grinding at ball mill, have most mechanical kinetic energy and be converted into heat energy, and the height that enters to grind clinker temperature all can affect ball milling built-in temperature, heat energy gathers too much and enters to grind clinker temperature height and can make ball milling built-in temperature raise, in mill, excess Temperature can cause gypsum dehydration, when serious, cause cement false set, affect cement quality, and in mill, temperature is high is easy to cause that in mill, cement is reunited because of Electrostatic Absorption, cause bag ball, bag section phenomenon, thereby reduction mill efficiency.An existing class cement producing line, cement grinding system is equipped with two pairs of storehouses Super-fine grinder machines, and grinder system belongs to out stream and grinds, without roll squeezer, design unit-hour output 85t/h, going out to grind temperature control is 110～125 DEG C, the type of cooling is sprayed water in adopting and grinding or is mill tail water spray; The water injector adopting is by cistern, two water pumps, water adjusting valve, air compressor machine and PLC composition of the control systems, and in mill, the flow process of water injector as shown in Figure 1.
In production practices, the running of water pump centrifugation blade long-term load, cause fan blade to wear and tear gradually with the long-term friction of running water, fan blade water pump in the process of wearing and tearing provides output less than normal or unstable, cause into mill injection flow rate and spraying hydraulic pressure and reduce, in mill, water spray area and water spray length shorten, and spraying hydraulic pressure is wanted and water spray air compressor machine blast must mate, general hydraulic pressure is greater than blast, due to centrifugation blade wearing and tearing, in unit interval, injection flow rate and hydraulic pressure are less than normal, do not adjusting in air compressor machine blast situation, when less than normal the or blast of hydraulic pressure and blast pressure differential is greater than hydraulic pressure, can cause reducing into mill inflow, fogging degree is high, water spray length can shorten more, atomized water does not also carry out heat exchange with hot-air and is just extracted out outside mill by mill tail exhaust blower, could not realize and lowering the temperature to grinding interior cement, cause cement temperature to raise, affect cement quality.Enable to follow the tracks of in time the fan blade degree of wear and frequently adjust air compressor machine blast, also can be difficult to permanently effective the stable of water injection system that maintain, because water pump fan blade weares and teares gradually, water pump output is on the low side, in mill, water spray range shortens, and in atomized steam and mill, cement contact area is little, carries out heat exchange also few, thereby be difficult to control the high phenomenon of temperature in mill, in mill, temperature height easily causes II storehouse bag ball, bag section phenomenon, reduces mill grinding efficiency, affects the raising of mill hourly output.And long-time temperature height can cause gypsum dehydration in mill, causes cement " false set " phenomenon, has a strong impact on cement quality, thereby go out to grind cement temperature and continue 1 hour higher than 140 DEG C, just must stop to grind, affect mill running rate and unit-hour output.
Pump motor long time running, its bearing and other parts wears are also larger, for example centrifugation blade generally uses as carrying out maintain and replace half a year, motor bearings repair and replacement in a year once, 5000 yuan approximately of every annual maintenance costs of water pump, every annual consumes power of water pump is 19000 degree left and right, and in the time of water-change pump parts more, has to stop mill and change, thereby affects mill running rate and power consumption of the mill.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of cement grinding mill water injector, and it can solve because of excess Temperature in cement grinding mill mill, affects cement quality, causes mill efficiency to reduce; And the high low and high problem of power consumption of the mill of mill running rate that causes of maintenance of equipment rate.
In order to address the above problem, technical scheme of the present invention is: this cement grinding mill water injector includes water adjusting valve, air compressor machine and PLC control system, be connected with the magnetic valve by the control of described PLC control system at running water water inlet pipe, described magnetic valve is connected with described water adjusting valve one end; The described water adjusting valve other end and described air compressor machine with enter to grind water inlet pipe and be connected.
In the connecting pipe of described magnetic valve and described water adjusting valve, be connected with check valve.
Described water adjusting valve with described in enter to grind on the pipeline that water inlet pipe is connected and be provided with Pressure gauge.
Owing to adopting technique scheme, the present invention has following beneficial effect:
(1) the present invention has cancelled original water pump, enters mill water spray and directly connects running water, and injection flow rate and hydraulic pressure are more stable, and excess Temperature in the mill of having avoided causing because of water pump fault affects cement quality and causes mill efficiency to reduce; And the high low and high problem of power consumption of the mill of mill running rate that causes of maintenance of equipment rate; Stable due to injection flow rate, spray water and generally reach 40-50% into mill water adjusting valve aperture and just can stablize and control out mill temperature.
(2) the present invention is because injection flow rate is stable, air compressor machine for water spraying atomization also need not be because of the water pump centrifugation blade wearing and tearing water pump pressure of supply water air compressor machine pressure that frequently regulates less than normal, and atomizing effect in keeping grinding, the fixing discharge pressure of fan of air compressor machine is 0.25Mpa now, just can keep grinding interior water spraying atomization effect.
(3) the present invention goes out to grind temperature and is well controlled, eliminate because grinding high II storehouse bag ball, the bag section phenomenon of causing of interior temperature, effectively ensure mill grinding efficiency, when having improved product quality, improve mill hourly output, also reduce that temperature is high stops grinding phenomenon, raising mill running rate because going out to grind simultaneously.
(4) the present invention is because having reduced former water injection system water pump, save the input of the annual maintenance expense to water pump, also saved the power consumption of water pump simultaneously, at least 5000 yuan of every annual maintenance costs of water pump, every annual consumes power of water pump is 19000 degree left and right, thereby has reduced production cost.
(5) the present invention well controls temperature in mill, has eliminated because grinding the high gypsum dehydration that causes of interior temperature, and has caused that " false set " phenomenon appears in cement, thereby ensured the stability of cement quality.
Brief description of the drawings
Fig. 1 is prior art schematic diagram.
Fig. 2 is schematic diagram of the present invention.
Number in the figure is denoted as: running water water inlet pipe 1; Buoy 2; Cistern 3; PLC control system 4; Water pump 5,6; Water adjusting valve 7; Pressure gauge 8; Air compressor machine 9; Enter to grind water inlet pipe 10; Magnetic valve 11; Check valve 12.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described:
Fig. 1 is water injection system schematic flow sheet in prior art mill; This system is by cistern 3, two water pumps 5,6; Water adjusting valve 7, air compressor machine 9 and PLC control system 4 form, cistern 3 one end connect running water water inlet pipe 1, running water water inlet pipe 1 is controlled the break-make of running water by a buoy 2, after the water in pond is taken away by water pump, buoy 2 sinks, running water pipe valve open, running water injects cistern 3, when full buoy 2 to a certain extent in pond rises, closes running water passage; Pressure gauge 8 is installed, for observing the pressure of water spray passage after water adjusting valve 7.This System Working Principle is: air compressor machine 9 pre-coolings before cement grinding mill starts, in mill, carry compressed air, and its object is dredged nozzle exactly, and avoiding starting in grinding machine process has steel ball, steel forging to block shower nozzle, thus impact water spray effect.In the time that scene goes out to grind temperature >=125 DEG C, feed back to PLC control system 4 by electric signal, 4 outputs of PLC control system start water pump signal, and water pump 5,6 starts to water pipe internal pump water; Central Control Room operator according to the aperture of height control and regulation water valve 7 that goes out to grind cement temperature, enters by entering to grind water inlet pipe 10 wind that water in mill and air compressor machine 9 provide by operation interface, keeps the stability of temperature in mill.When going out to grind temperature lower than 110 DEG C, after water adjusting valve 7 is closed, PLC control system 4 is exported water pump stop signal, and water pump 5,6 stops pump water.
The present invention of Fig. 2, includes water adjusting valve 7, air compressor machine 9 and PLC control system 4, is connected with the magnetic valve 11 of being controlled by PLC control system 4 at running water water inlet pipe 1, and magnetic valve 11 is connected with water adjusting valve 7 one end; Water adjusting valve 7 other ends and air compressor machine 9 with enter to grind water inlet pipe 10 and be connected; In the connecting pipe of magnetic valve 11 and water adjusting valve 7, be connected with check valve 12; Water adjusting valve 7 with enter to grind the pipeline that water inlet pipe 10 is connected on be provided with Pressure gauge 8.
The present invention cancels the cistern of former water injection system, water inlet end is directly connected with running water pipe by magnetic valve 11, the object of doing is like this because tap water hydraulic is more stable, conventionally remain on 0.35Mpa, provide hydraulic pressure more stable with water pump, thereby ensure that water injection system has enough water pressures to spray water in mill.Cancel two water supply pumps of former water injection system simultaneously, change the start-stop of controlling water supply with magnetic valve 11 into.Its operation principle is the same with original water injection system, when going out to grind temperature while reaching 125 DEG C, according to PLC program setting, PLC control system 4 is given 11 1 opening signals of magnetic valve, magnetic valve 11 is started working, operator is regulated into the size of mill control water valve 7 and regulates inflow according to the height that goes out to grind temperature by Central Control Room operation interface, thereby keeps the interior temperature of mill in controlled range; Whether the check valve 12 arranging in the connecting pipe of magnetic valve 11 and water adjusting valve 7 there is fault when checking electromagnetic valve work.In the time going out to grind temperature lower than 110 DEG C, PLC control system 4, according to the setting of PLC control program, is exported to 11 1 shutdown signals of magnetic valve, and magnetic valve quits work, and stops supplying water in pipe.
The present invention has cancelled original cistern and water pump, enters mill water spray and directly connects running water, and injection flow rate and hydraulic pressure are more stable, and excess Temperature in the mill of having avoided causing because of water pump fault affects cement quality and causes mill efficiency to reduce; And the high low and high problem of power consumption of the mill of mill running rate that causes of maintenance of equipment rate; Stable due to injection flow rate, spray water and generally reach 40-50% into mill water adjusting valve aperture and just can stablize and control out mill temperature; Because injection flow rate is stable, air compressor machine also need not be because of the water pump centrifugation blade wearing and tearing water pump pressure of supply water air compressor machine pressure that frequently regulates less than normal, and keeping atomizing effect in mill, the fixing discharge pressure of fan of the air compressor machine of spraying water is now 0.25Mpa, just can keep grinding interior water spraying atomization effect.Save every year the input of the maintenance expense to water pump simultaneously, and saved the power consumption of water pump, and at least 5000 yuan of every annual maintenance costs of water pump, every annual consumes power of water pump is 19000 degree left and right, in ensureing product quality, reduce production cost, remarkable in economical benefits.
Claims (1)
1. a cement grinding mill water injector, include water adjusting valve (7), air compressor machine (9) and PLC control system (4), it is characterized in that: be connected with the magnetic valve (11) of being controlled by described PLC control system (4) at running water water inlet pipe (1), described magnetic valve (11) is connected with described water adjusting valve (7) one end; Described water adjusting valve (7) other end and described air compressor machine (9) with enter to grind water inlet pipe (10) and be connected; In the connecting pipe of described magnetic valve (11) and described water adjusting valve (7), be connected with check valve (12); Described water adjusting valve (7) with described in enter to grind on the pipeline that water inlet pipe (10) is connected and be provided with Pressure gauge (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310565094.2A CN104001592A (en) | 2013-11-13 | 2013-11-13 | Water spraying device for cement grinding mill |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310565094.2A CN104001592A (en) | 2013-11-13 | 2013-11-13 | Water spraying device for cement grinding mill |
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| CN104001592A true CN104001592A (en) | 2014-08-27 |
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| CN201310565094.2A Pending CN104001592A (en) | 2013-11-13 | 2013-11-13 | Water spraying device for cement grinding mill |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105797839A (en) * | 2016-04-28 | 2016-07-27 | 韦国思 | Water spray system for cement mill |
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|---|---|---|---|---|
| CN2492315Y (en) * | 2001-08-03 | 2002-05-22 | 华新水泥股份有限公司 | Pulverizer with built-in water jet |
| CN201500574U (en) * | 2009-09-02 | 2010-06-09 | 高金祯 | Automatic temperature controller of cement mill |
| CN202041060U (en) * | 2011-04-28 | 2011-11-16 | 山东力诺新材料有限公司 | Solar cement product dryer |
| KR101215468B1 (en) * | 2012-10-30 | 2012-12-26 | 한국지질자원연구원 | Apparatus and method for measuring permeability of sample using carbon dioxide |
| CN203196743U (en) * | 2013-03-14 | 2013-09-18 | 沈阳信成科技有限公司 | Automatic control spraying cooling equipment of cement mill |
| CN203508121U (en) * | 2013-09-14 | 2014-04-02 | 广西鱼峰水泥股份有限公司 | Water spraying device in cement grinding mill |
-
2013
- 2013-11-13 CN CN201310565094.2A patent/CN104001592A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2492315Y (en) * | 2001-08-03 | 2002-05-22 | 华新水泥股份有限公司 | Pulverizer with built-in water jet |
| CN201500574U (en) * | 2009-09-02 | 2010-06-09 | 高金祯 | Automatic temperature controller of cement mill |
| CN202041060U (en) * | 2011-04-28 | 2011-11-16 | 山东力诺新材料有限公司 | Solar cement product dryer |
| KR101215468B1 (en) * | 2012-10-30 | 2012-12-26 | 한국지질자원연구원 | Apparatus and method for measuring permeability of sample using carbon dioxide |
| CN203196743U (en) * | 2013-03-14 | 2013-09-18 | 沈阳信成科技有限公司 | Automatic control spraying cooling equipment of cement mill |
| CN203508121U (en) * | 2013-09-14 | 2014-04-02 | 广西鱼峰水泥股份有限公司 | Water spraying device in cement grinding mill |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105797839A (en) * | 2016-04-28 | 2016-07-27 | 韦国思 | Water spray system for cement mill |
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Application publication date: 20140827 |