CN110054424A - A kind of regulation and control method of roll squeezer roll gap - Google Patents
A kind of regulation and control method of roll squeezer roll gap Download PDFInfo
- Publication number
- CN110054424A CN110054424A CN201910426748.0A CN201910426748A CN110054424A CN 110054424 A CN110054424 A CN 110054424A CN 201910426748 A CN201910426748 A CN 201910426748A CN 110054424 A CN110054424 A CN 110054424A
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- scraper
- trough conveyer
- roll gap
- striker plate
- sectional area
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/48—Clinker treatment
- C04B7/52—Grinding ; After-treatment of ground cement
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
The present invention relates to a kind of regulation and control method of roll squeezer roll gap, include the following steps: 1), check weighing cabin different freight spaces when discharging point position and isolation situation, check recycle stock charging is uniformly distributed situation, that calculates pan feeding passes through speed；2), change scraper-trough conveyer sectional area, improve the mixing uniformity of material, need sectional area by roll squeezer design maximum throughput calculating；3), entering in weighing cabin scraper-trough conveyer that striker plate is arranged；4), the striker plate that adjustment is installed additional is to different location, for controlling roll gap.This method is suitable for the grinding production system with roll squeezer and weighing cabin, can adjust the axial force of the deviation of roll gap in production, the resulting roller of control, keep production status more controlled, more stable.
Description
Technical field
The invention belongs to field of cement production, are related to a kind of regulation and control method of manufacture of cement roll squeezer roll gap,
This method is suitable for the grinding production system with roll squeezer and weighing cabin.
Background technique
In cement production process, the use of roll squeezer is all very universal in raw grinding and cement grinding.Roll squeezer is certainly
Dynamic control loop includes constant pressure control and permanent gap preset two ways, in order to surpass the numerical value of roll squeezer two sides roll gap difference not
Limit, be all controlled using the start and stop of hydraulic pump, and to sacrifice roll squeezer the effect of as condition.So roll gap
Deviation exists always, and is in passive state of a control.
Roll gap deviation will lead to many problems, as roller generates axial force, roll side is altered, side baffle is not tight, roll-in efficiency
Low, internal circulating load is big, the abrasion of track side, the roller bearing lost of life etc., can all influence the safe operation and production of equipment
Stabilization.
It is, in principle, that roll squeezer roll gap deviation primarily form the reason is that into the material of roll gap grain composition and its
Uniformity, and influence to enter the grain composition of roll gap material and the shape and structure because being known as weighing cabin of uniformity and enter to weigh
Uniformity, drop point site and the isolation situation in storehouse of storehouse material.Under normal circumstances, enter weighing cabin scraper-trough conveyer and all design weighing
The center position of silo roof, scraper-trough conveyer size is big and supplied materials direction partially etc. due to, enter the drop point most cases of weighing cabin material not
At the center of weighing cabin, lead to the generation of roll squeezer roll gap deviation；In production practice, some production lines are by lengthening into weighing
The method of storehouse pipe of input length is put in storage the uniformity of material come the drop point for limiting material and raising, though it can reduce to a certain extent
Roll gap deviation, but still adjustment is not achieved and controls the purpose of roll gap.
For the situation, the present invention provides a kind of methods for adjusting roll squeezer weighing cabin pan feeding drop point, pass through change
Weighing cabin pan feeding drop point is to achieve the purpose that the uniform control roll gap into roll gap material.
Summary of the invention
The invention discloses a kind of regulation and control method of roll squeezer roll gap, this method falls by adjusting weighing cabin pan feeding
Point enters roll gap material and control roll gap deviation to achieve the purpose that stablize.
Technical scheme is as follows:
A kind of regulation and control method of roll squeezer roll gap, includes the following steps:
1), check that discharging point position and isolation situation, inspection recycle stock charging when weighing cabin different freight spaces are uniformly distributed
Situation is calculated and passes through speed into weighing cabin material.
2), change scraper-trough conveyer sectional area, improve the mixing uniformity of material, calculate and need by roll squeezer design maximum throughput
Sectional area.
Calculation formula is as follows:
Sectional area S=L*B=T/ (t*v*p)
Wherein L--- scraper-trough conveyer length
B--- scraper-trough conveyer width；
T--- constant, 3600, it is equivalent to 1 hour corresponding number of seconds
T--- thruput, ton/hour
V--- material takes 0.5m/s by speed
P--- material volume weight, ton/rice3
Wherein scraper-trough conveyer section is length with roll gap direction, is width with vertical roll gap direction；If poor direction, it is adjusted to change
It changes direction.
What two scraper-trough conveyers were fed, one is proportioning station mixture scraper-trough conveyer, and one is cycle stock scraper-trough conveyer, and two scraper-trough conveyers are merged
At a scraper-trough conveyer.
When scraper-trough conveyer insufficient height, silo roof platform can be reduced, to extend scraper-trough conveyer.
3), entering in weighing cabin scraper-trough conveyer that striker plate is arranged.
The size of striker plate is determined according to the pan feeding drop point site, distribution of particles and isolation situation of material in weighing cabin；Gear
Flitch quantity is 1-2, and striker plate length, which is subject to, can effectively change into weighing cabin material drop point.
4), the striker plate that adjustment is installed additional is to different location, for controlling roll gap.
In the case where two striker plates are arranged, at least one is in initial position for two striker plates, does not allow simultaneously
Adjustment.
The effective area of scraper-trough conveyer, can not be adjusted so as to too small, prevent from blocking, avoid accident by striker plate setting adjustment limit value.
Adjustment striker plate can effectively change the drop point that material enters weighing cabin, make the uniformity and isolation of material in weighing cabin
Change is happened, to change the uniformity into roll gap material, controls the roll gap state of roll squeezer, reaches adjusting production central roll
The effect of the deviation, the axial force of the resulting roller of control of seam, keeps production status more controlled, more stable.
The charging of roll squeezer weighing cabin generally has one or two scraper-trough conveyers, closes by feedstock direction is corresponding with roll gap direction
System point, has three ways, such as vertical, parallel and oblique intersection.The relative positional relationship in the feedstock direction and roll gap direction is according to sky
Between relationship in linear projection to horizontal plane name.
In the method for the invention, in the case where different feeding manners, step 2) and step 3) operation are different,
Concrete operations difference is as follows:
One, in the case where singly feeding vertical scraper-trough conveyer, feedstock direction is vertical with roll gap direction:
1), change scraper-trough conveyer and meet material long side shell gradient, make supplied materials drop point on the center line of storehouse；
2) it, calculates and needs sectional area；
3), control scraper-trough conveyer length-width ratio is in 1.5:1；
4), a striker plate is respectively installed additional at long side both ends.
Two, in the case where singly feeding parallel scraper-trough conveyer, feedstock direction is parallel with roll gap direction:
1) it, calculates and needs sectional area；
2), control scraper-trough conveyer length-width ratio is in 1.2:1；
3), material direction one striker plate of installation is being met.
Three, in the case where singly feeding oblique scraper-trough conveyer, feedstock direction intersects at a certain angle with roll gap direction, at this time scraper-trough conveyer
It has the slide carriage in both direction and meets material:
1) it, calculates and needs sectional area；
2), control scraper-trough conveyer length-width ratio is in 1.2:1；
3), change the scraper-trough conveyer two slide carriage gradients met on the length direction of material, make the drop point of material on the center line of weighing cabin；
4), material broadside one striker plate of installation is being met.
Four, in the case where double chargings, when the feedstock direction of the mixture from proportioning station is vertical with roll gap direction:
1), change scraper-trough conveyer sectional area as needed；
2), control scraper-trough conveyer length-width ratio is in 1.5:1；
3), adjustment mixture meets the slide carriage on material direction, makes the drop point of material on the center line of weighing cabin；
4), a striker plate is respectively installed additional in roll gap both ends direction.
Five, in the case where the feedstock direction of double chargings, proportioning station mixture is parallel with roll gap direction:
1), change scraper-trough conveyer sectional area as needed；
2), control scraper-trough conveyer length-width ratio is in 1.2:1；
3), a striker plate is installed additional in the material direction of meeting of proportioning station mixture.
Six, in the case where double chargings, the feedstock direction of proportioning station mixture and the oblique intersection in roll gap direction, scraper-trough conveyer at this time
The slide carriage having in both direction meets mixture:
1), change scraper-trough conveyer sectional area as needed；
2), control scraper-trough conveyer length-width ratio is in 1.2:1；
3), change the scraper-trough conveyer two slide carriage gradients met on the length direction of material, make the drop point of material on the center line of weighing cabin；
4), a striker plate is installed additional in the material broadside of meeting of proportioning station mixture.
Method of the invention can be used for the raw grinding and cement grinding system of field of cement production.Method tool of the invention
Beneficial effect be:, can be effectively using method of the invention in the grinding production system with roll squeezer and weighing cabin
Change material and enter the drop point of weighing cabin, reaches and adjust the deviation of roll gap in production, the axial force of the resulting roller of control
Effect, keeps production status more controlled, more stable.
Detailed description of the invention
Fig. 1 is the schematic device that a striker plate situation is only set in charging according to the method for the present invention.
Fig. 2 is according to the method for the present invention in double chargings, feedstock direction and the oblique phase in roll gap direction of proportioning station mixture
Schematic device in the case of friendship, wherein figure a is the main view of described device, figure b is the left view of described device.
Description of symbols:
1- weighing cabin；2- regulating device；3- striker plate；4- scraper-trough conveyer；5- silo roof platform；6- mixture scraper-trough conveyer.
Specific embodiment
Embodiment 1:
Present invention will be further described in detail through examples with reference to the accompanying drawing.
As shown in Fig. 2, the specifications and models of roll squeezer are HFCG160 × 140 in the present embodiment, design maximum throughput
900 tons, weighing cabin 1 is round storehouse, 2.2 meters of diameter, 180 ton/hours of practical production capacity, and circulating load ratio 350%.Known the present embodiment
In material volume weight used be 1.35 tons/meter3, 1 pan feeding scraper-trough conveyer 4 of weighing cabin be double chargings, proportioning station mixture feedstock direction with
The case where roll gap direction is in oblique intersection, the lower mouth original of scraper-trough conveyer 4 is 1.32 meters long, 0.55 meter wide.
Discharging point position and isolation situation when first checking for 1 different freight spaces of weighing cabin, discharging point and storehouse centre deviation are big,
Sometimes in material punching to storehouse shell side wall, bulk materials have clustering phenomena, and isolation situation is obvious.
Re-inspection recycle stock charging is uniformly distributed situation, and the position of the left, center, right on cycle stock scraper-trough conveyer takes respectively
Sample, test sample fineness, is not much different, relatively uniform.
Pan feeding speed is calculated according to actual production:
T=ɑ(1+∮)=3600*v*p*L*B=180*(1+350%)=3600*v*1.35*1.32*0.55
Wherein ɑ-unit-hour output/practical production capacity, ton/hour
∮-circulating load ratio
Calculate pan feeding passes through speed:
V=(180*4.5)/(3600*1.35*1.32*0.55)=0.23 m/s is less than setting value 0.5m/s
The sectional area that scraper-trough conveyer 4 is needed after being transformed is calculated by roll squeezer design maximum throughput:
S=T/(3600*v*p)=900/(3600*0.5*1.35)=0.37m2
Under this feeding manner, it is known that scraper-trough conveyer length-width ratio is 1.2:1, so, S=L*B=1.2B*B.
Then the wide B of scraper-trough conveyer===0.55m
Long L=the 1.2*B of scraper-trough conveyer=1.2*0.55=0.66m
4 sectional area of scraper-trough conveyer is reduced with this, as shown in Fig. 2 a left view, the slide carriage on mixture length direction is met in adjustment, makes material
Enter the drop point of weighing cabin 1 on the center line of storehouse, installs a striker plate 3, striker plate 3 and roll squeezer roll gap additional in vertical in broadside
Histogram is to arrangement.
Before striker plate 3 is installed, 10-15mm bigger than normal on the left of roll gap；With slowly adjusting forward for striker plate 3, left side roll gap
Gradually become smaller, while right side roll gap incrementally increases, until reaching roll gap desired value.
It is adjusted for the first time in striker plate 3, after reaching left and right roll gap desired value, with the variation of time, material characteristic is had
Different variations, roll gap can also generate certain variation；At this moment, if it is desired to which left side roll gap becomes smaller, and just fends off flitch toward left side
3, if it is desired to which right side roll gap becomes smaller, and just receives striker plate 3 toward dextrad, is achieved in the effect of control roll gap as needed.
Claims (10)
1. a kind of regulation and control method of roll squeezer roll gap, includes the following steps:
1), check that discharging point position and isolation situation, inspection recycle stock charging when weighing cabin different freight spaces are uniformly distributed
Situation, that calculates pan feeding passes through speed；
2), change scraper-trough conveyer sectional area, improve the mixing uniformity of material, need section by roll squeezer design maximum throughput calculating
Product；
3), entering in weighing cabin scraper-trough conveyer that striker plate is arranged；
4), the striker plate that adjustment is installed additional is to different location, for controlling roll gap.
2. according to the method described in claim 1, wherein in step 2), when two scraper-trough conveyers of proportioning station mixture and cycle stock into
When material, two scraper-trough conveyers are merged into a scraper-trough conveyer.
3. according to the method described in claim 1, striker plate quantity is 1-2 wherein in step 3).
4. according to the method described in claim 1, in the case where two striker plates are arranged, two are kept off wherein in step 4)
Flitch does not adjust simultaneously.
5. according to the method described in claim 1, in the case where singly feeding vertical scraper-trough conveyer, being grasped wherein for step 2) and 3)
Make as follows:
1), change scraper-trough conveyer and meet material long side shell gradient, make supplied materials drop point on the center line of storehouse；
2) it, calculates and needs sectional area；
3), control scraper-trough conveyer length-width ratio is in 1.5:1；
4), a striker plate is respectively installed additional at long side both ends.
6. according to the method described in claim 1, in the case where singly feeding parallel scraper-trough conveyer, being grasped wherein for step 2) and 3)
Make as follows:
1) it, calculates and needs sectional area；
2), control scraper-trough conveyer length-width ratio is in 1.2:1；
3), material direction one striker plate of installation is being met.
7. according to the method described in claim 1, in the case where singly feeding oblique scraper-trough conveyer, being grasped wherein for step 2) and 3)
Make as follows:
1) it, calculates and needs sectional area；
2), control scraper-trough conveyer length-width ratio is in 1.2:1；
3), change the scraper-trough conveyer two slide carriage gradients met on the length direction of material, make the drop point of material on the center line of weighing cabin；
4), material broadside one striker plate of installation is being met.
8. according to the method described in claim 1, wherein for step 2) and 3), in the charging side of the mixture from proportioning station
To in the case of the double chargings vertical with roll gap direction, operate as follows:
1), change scraper-trough conveyer sectional area as needed；
2), control scraper-trough conveyer length-width ratio is in 1.5:1；
3), adjustment mixture meets the slide carriage on material direction, makes the drop point of material on the center line of weighing cabin；
4), a striker plate is respectively installed additional in roll gap both ends direction.
9. according to the method described in claim 1, wherein for step 2) and 3), in double chargings, the charging of proportioning station mixture
In the case that direction is parallel with roll gap direction, operate as follows:
1), change scraper-trough conveyer sectional area as needed；
2), control scraper-trough conveyer length-width ratio is in 1.2:1；
3), a striker plate is installed additional in the material direction of meeting of proportioning station mixture.
10. according to the method described in claim 1, wherein for step 2) and 3), in double chargings, the charging of proportioning station mixture
In the case where direction and the oblique intersection in roll gap direction, operate as follows:
1), change scraper-trough conveyer sectional area as needed；
2), control scraper-trough conveyer length-width ratio is in 1.2:1；
3), change the scraper-trough conveyer two slide carriage gradients met on the length direction of material, make the drop point of material on the center line of weighing cabin；
4), a striker plate is installed additional in the material broadside of meeting of proportioning station mixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910426748.0A CN110054424B (en) | 2019-05-22 | 2019-05-22 | Roll gap adjusting and controlling method of roll squeezer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910426748.0A CN110054424B (en) | 2019-05-22 | 2019-05-22 | Roll gap adjusting and controlling method of roll squeezer |
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| Publication Number | Publication Date |
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| CN110054424A true CN110054424A (en) | 2019-07-26 |
| CN110054424B CN110054424B (en) | 2021-08-03 |
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| CN201910426748.0A Active CN110054424B (en) | 2019-05-22 | 2019-05-22 | Roll gap adjusting and controlling method of roll squeezer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116133755A (en) * | 2020-06-16 | 2023-05-16 | Khd洪保德韦达克有限公司 | High-pressure roller press with vibration device in feeding device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03180202A (en) * | 1989-12-06 | 1991-08-06 | Kobe Steel Ltd | Control device for rolling mill |
| CN202516668U (en) * | 2012-04-26 | 2012-11-07 | 成都大宏立机器制造有限公司 | Feeding cabin structure for roll crusher |
| CN204320385U (en) * | 2014-12-18 | 2015-05-13 | 四川皇龙智能破碎技术股份有限公司 | The uniform distribution device that a kind of four sides baffle plate is adjustable |
| CN109365050A (en) * | 2018-11-15 | 2019-02-22 | 中建材（合肥）粉体科技装备有限公司 | A kind of device and control method of control roll squeezer flow stabilizing weighing cabin material isolation |
-
2019
- 2019-05-22 CN CN201910426748.0A patent/CN110054424B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03180202A (en) * | 1989-12-06 | 1991-08-06 | Kobe Steel Ltd | Control device for rolling mill |
| CN202516668U (en) * | 2012-04-26 | 2012-11-07 | 成都大宏立机器制造有限公司 | Feeding cabin structure for roll crusher |
| CN204320385U (en) * | 2014-12-18 | 2015-05-13 | 四川皇龙智能破碎技术股份有限公司 | The uniform distribution device that a kind of four sides baffle plate is adjustable |
| CN109365050A (en) * | 2018-11-15 | 2019-02-22 | 中建材（合肥）粉体科技装备有限公司 | A kind of device and control method of control roll squeezer flow stabilizing weighing cabin material isolation |
Non-Patent Citations (2)
| Title |
|---|
| SVEN STOCKERT: "《Improving the thickness accuracy of cold rolled narrow strip by piezoelectric roll gap control at high rolling speed》", 《CIRP ANNALS》 * |
| 全印: "《一种辊压机预粉磨系统物料离析问题的改进方法》", 《水泥》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116133755A (en) * | 2020-06-16 | 2023-05-16 | Khd洪保德韦达克有限公司 | High-pressure roller press with vibration device in feeding device |
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| CN110054424B (en) | 2021-08-03 |
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