CN109127005A - Spare multiple roll cement vertical roll grinder mutually - Google Patents
Spare multiple roll cement vertical roll grinder mutually Download PDFInfo
- Publication number
- CN109127005A CN109127005A CN201811010397.7A CN201811010397A CN109127005A CN 109127005 A CN109127005 A CN 109127005A CN 201811010397 A CN201811010397 A CN 201811010397A CN 109127005 A CN109127005 A CN 109127005A
- Authority
- CN
- China
- Prior art keywords
- grinding roller
- grinding
- mill
- cement vertical
- vertical roll
- 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.)
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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
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
- B02C15/06—Mills with rollers forced against the interior of a rotary ring, e.g. under spring action
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
- B02C15/004—Shape or construction of rollers or balls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
- B02C15/007—Mills with rollers pressed against a rotary horizontal disc
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
The present invention relates to a kind of mutual spare multiple roll cement vertical roll grinders, for carrying out grinding to material, wherein spare multiple roll cement vertical roll grinder includes mill mutually, for placing material；Multiple grinding roller groups are set to above mill, and the grinding roller quantity of each grinding roller group is two, are symmetrically disposed on mill two sides；Multiple swing mechanisms are correspondingly connected with each grinding roller respectively, and each swing mechanism swings grinding for controlling corresponding grinding roller；And hydraulic control device, it is connect with multiple swing mechanisms, hydraulic control device optionally controls the wherein grinding roller group in multiple grinding roller groups by multiple swing mechanisms and swings grinding material, and remaining grinding roller group does not work then.Mutual spare multiple roll cement vertical roll grinder of the invention arranges multiple grinding roller groups on mill, and when one of grinding roller group works, remaining grinding roller group directly can repair or dismantle cleaning and cleaning.
Description
Technical field
The present invention relates to a kind of vertical roll grinders, more particularly to a kind of mutual spare multiple roll cement vertical roll grinder.
Background technique
With technology of producing cement continuous development and cement industry it is increasingly enlarged, roller type vertical mill be widely used in
Cement industry has become trend, and why roller type vertical mill is generally approved by people, is primarily due to it in working principle, grinder
Reason, device structure, system process etc. have its particular advantages；Such as: its process system is simple, convenient for control, Ke Yi great
Amount utilizes the kiln tail gas of preheater kiln, and saves energy consumption, and mill efficiency is high, compared with milling system, has occupied area
Small, process system is simple, capital expenditure save, low energy consumption, and metal consumption is few, low noise, either system or single machine relative to
Weight is all small for ball mill, can save a large amount of metal material.In recent years roller mill at home, it is extensive in outer manufacture of cement
Using.
But most of vertical roll grinder of the prior art is the Vertical Mill of Loesche mill pressurised form, i.e., by being placed on column
The hydraulic cylinder tension device of the inside pressurizes to grinding roller, and this structure not only takes up an area that big, weight is big, but also hydraulic cylinder installation inspection
It is also extremely inconvenient to repair.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of mutual spare multiple roll cement vertical roll grinders, to solve
Above-mentioned technical problem, specific technical solution are as follows: a kind of mutual spare multiple roll cement vertical roll grinder are provided, for material
Grinding is carried out, wherein spare multiple roll cement vertical roll grinder includes mill mutually, for placing material；Multiple grinding roller groups, if
It is placed in above mill, the grinding roller quantity of each grinding roller group is two, is symmetrically disposed on mill two sides；Multiple swing mechanisms, respectively
It is correspondingly connected with each grinding roller, each swing mechanism swings grinding for controlling corresponding grinding roller；And hydraulic control device, with
Multiple swing mechanism connections, hydraulic control device are optionally controlled in multiple grinding roller groups wherein by multiple swing mechanisms
One grinding roller group swings grinding material, and remaining grinding roller group does not work then.
In a kind of possible design, further includes chassis, be set to around mill, swing mechanism is set on chassis.
In a kind of possible design, swing mechanism further includes swing arm and oscillating oil cylinder, and oscillating oil cylinder is arranged on chassis,
Oscillating oil cylinder is connected by swing arm with corresponding grinding roller.
In a kind of possible design, swing mechanism further includes pin shaft, and swing arm is hinged by pin shaft with oscillating oil cylinder.
In a kind of possible design, the quantity of grinding roller group is two, and one of grinding roller group include the first grinding roller and
Third grinding roller, another grinding roller group include the second grinding roller and the 4th grinding roller, the first grinding roller, the second grinding roller, third grinding roller and the 4th
Grinding roller is that interval is uniformly arranged on mill surrounding.
In a kind of possible design, spare multiple roll cement vertical roll grinder further includes middle shell, muti-piece bridge plate mutually
With the bearing block being set on each bridge plate, middle shell is set to above chassis and is located on mill, and each grinding roller one end is worn
It crosses shell and is located in middle shell, each grinding roller other end is set to middle hull outside and connect with swing arm, and swing arm is arranged in axis
It holds on seat.
In a kind of possible design, spare multiple roll cement vertical roll grinder further includes sealing plate mutually, removably
It is set to and passes through the corresponding position of middle shell with each grinding roller and connect with each grinding roller, for shell in sealing.
In a kind of possible design, the top position of middle shell is additionally provided with the ring flat-plate outwardly protruded, and ring flat-plate is for mutual
The pipeline of spare multiple roll cement vertical roll grinder is wound and support.
In a kind of possible design, multiple clips are additionally provided on ring flat-plate, it is vertical for fixed mutual spare multiple roll cement
The pipeline of formula roller mill.
In a kind of possible design, spare multiple roll cement vertical roll grinder further includes seal cover board mutually, and setting exists
On middle shell, and it is corresponding with the position of each grinding roller.
The present invention has had the advantage that compared with prior art:
1, mutual spare multiple roll cement vertical roll grinder of the invention arranges multiple grinding roller groups on mill, one of them
When grinding roller group works, remaining grinding roller group directly can repair or dismantle cleaning and cleaning；
2, the interval operation control manner of multiple grinding roller groups of mutual spare multiple roll cement vertical roll grinder of the invention
And cooperating multiple grinding roller groups, especially two grinding roller groups mutually switch and spare, and the whole service life of grinding roller is longer；
3, the maintenance period of mutual spare multiple roll cement vertical roll grinder of the invention is very long, service life is also longer,
The whole work efficiency for improving cement vertical mill, saves time cost, can create more efficiency.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings, but the content in attached drawing does not constitute any limitation of the invention.
Fig. 1 is the structural schematic diagram of the mutual spare multiple roll cement vertical roll grinder of one embodiment of the invention.
Fig. 2 is the schematic front view of two grinding roller groups of one embodiment of the invention.
Fig. 3 is the schematic top plan view of two grinding roller groups of one embodiment of the invention.
Specific embodiment
As shown in Figure 1, disclosing a kind of mutual spare multiple roll cement vertical roll grinder in one embodiment of this invention
20, for carrying out grinding to material, wherein spare multiple roll cement vertical roll grinder 20 includes mill 5, multiple grinding roller groups mutually
17, multiple swing mechanisms 19 and hydraulic control device 6, in which:
Mill 5 is mainly used for providing rigid support for material, and can make multiple grinding roller groups 17 for placing material
Material is ground on mill 5；Can there is no particular/special requirement for the selection of mill 5 in the present invention, referring to this field
Conventional selection.
Multiple grinding roller groups 17 are set to 5 top of mill, and the grinding roller quantity of each grinding roller group 17 is two, are symmetrically disposed on mill
5 two sides of disk, and two symmetrical grinding rollers swing grinding cement material together, while remaining grinding roller does not work.
In a preferred embodiment, the quantity of grinding roller group 17 of the invention can be two, three or three or more, work as mill
When the quantity of roller group 17 is three or three or more, multiple spaced apart grinding roller groups 17 can be divided to for two big group work simultaneously
It controls simultaneously, also can control wherein two neighboring grinding roller group 17 and work together, guarantee has grinding roller group 17 spare, this control
The cement material that mode processed obtains is uniformly also preferable.
In a preferred embodiment, it please refers to shown in Fig. 3, the quantity of grinding roller group 17 is two, and one of grinding roller group
17 include the first grinding roller 1 and third grinding roller 3, another grinding roller group 17 include the second grinding roller 2 and the 4th grinding roller 4, the first grinding roller 1,
Second grinding roller 2, third grinding roller 3 and the 4th grinding roller 4 are that interval is uniformly arranged on 5 surrounding of mill, and the first grinding roller 1 and third mill
Roller 3 controls it by hydraulic control device 6 and swings grinding cement material together, and the second grinding roller 2 and the 4th grinding roller 4 are also by hydraulic
Control device 6 control its swings together grind cement material, both control modes alternately, can also individually control into
Row.
Concrete implementation method is that the first grinding roller 1 is connected hydraulic control device by a control valve with third grinding roller 3
6, the second grinding roller 2 is connected into hydraulic control device 6 by another control valve with the 4th grinding roller 4, the two control valves are arranged side by side
It connects and realizes control into hydraulic control device 6, this control method can better ensure that two groups of symmetrical grinding rollers are fine simultaneously
Ground work, work efficiency is high, and the cement powders ground are uniform.
When implementing the control mode, a control valve can also be used alone in each grinding roller and be connected to hydraulic control
On device 6 processed, can be with each grinding roller of independent control, one of benefit of the embodiment using hydraulic control device 6,
Grinding roller can be separately maintained with each grinding roller in maintenance, control also relatively easy, but the components phase that this mode needs
To more, systematic comparison is complicated, and when control will appear certain asynchronous grinding phenomenon, obtained cement powders granulation uniformity
It is relatively poor.The first grinding roller and the second grinding roller do not work at the same time simultaneously, it is ensured that the working time of entire Vertical Mill is longer, maintenance
And adjustment is more convenient.
Multiple swing mechanisms 19 are correspondingly connected with each grinding roller respectively, and each swing mechanism 19 is for controlling corresponding grinding roller
Grinding is swung, is please referred to shown in Fig. 2, swing mechanism 19 disclosed in the present embodiment further includes swing arm 11 and oscillating oil cylinder 7, swings oil
Cylinder 7 is arranged on chassis, and oscillating oil cylinder 7 is connected by swing arm 11 with corresponding grinding roller.The present embodiment is further disclosed to be swung
Mechanism 19 further includes pin shaft 18, and it is hinged that swing arm 11 and oscillating oil cylinder 7 pass through pin shaft 18, but not to swing disclosed in the present embodiment
Mechanism 19 is limited.
17 pressure structure of grinding roller group of the invention is different from existing pressure structure, please refers to shown in Fig. 1, and the present invention utilizes
The rodless cavity of oscillating oil cylinder 7 pushes up swing arm 11 upwards, using the reaction force of swing arm 11 on grinding roller, and then carries out to clinker
Grinding.According to the principle that F (pressure)=P (pressure) xS (area), pressure and the bigger pressure of area are bigger, and the present invention utilizes no bar
The area of chamber is greater than the area of rod chamber, reasonable utilization lever principle, and transmits the pressurization of torque opposite grinding roller by swing arm 11.
In a preferred embodiment, it please refers to Fig. 1, shown in 2, further includes chassis 9, chassis 9 is set to around mill 5, pendulum
Motivation structure 19 is set on chassis 9, and chassis 9 is mainly used for providing rigid support for swing mechanism 19 and be formed with middle shell close
Seal space.
Hydraulic control device 6 is connect with multiple swing mechanisms 19, is please referred to shown in Fig. 1, and hydraulic control device 6 is alternative
Control the wherein grinding roller group 17 in multiple grinding roller groups 17 by multiple swing mechanisms 19 and swing grinding material, and remaining grinding roller
Group 17 does not work then.The oscillating oil cylinder 7 of each grinding roller disclosed in the present embodiment is separately attached on hydraulic control device 6,
Hydraulic control device 6 controls the grinding roller that grinding roller claims corresponding thereto and swings grinding cement material together, while remaining grinding roller does not work.
In a preferred embodiment, referring again to shown in Fig. 1, spare multiple roll cement vertical roll grinder 20 is also wrapped mutually
Shell 10, muti-piece bridge plate 12 and the bearing block 13 being set on each bridge plate 12 are included, middle shell 10 is set to 9 top of chassis simultaneously
It is located on mill 5, each grinding roller one end passes through middle shell 10 and is located in middle shell 10, during each grinding roller other end is set to
10 outside of shell is connect with swing arm 11, and swing arm 11 is arranged on bearing block 13.
In a preferred embodiment, it please refers to shown in Fig. 1, spare multiple roll cement vertical roll grinder 20 further includes close mutually
Sealing plate 8 is detachably arranged in and passes through the corresponding position of middle shell 10 with each grinding roller and connect with each grinding roller, and middle shell
Body 10 be equipped with connecting hole corresponding with sealing plate 8, when sealing plate 8 is placed in corresponding connecting hole, centering shell 10 into
Row sealing.
In another preferred embodiment, referring again to shown in Fig. 1, spare multiple roll cement vertical roll grinder 20 is gone back mutually
Including seal cover board 14, it is arranged on middle shell 10, and corresponding with the position of each grinding roller, when grinding roller needs repairing, tears open
It unloads a pair of opposite grinding roller to be overhauled, and is blocked the grinding roller position disassembled using seal cover board 14, when closure
The connecting hole of dismountable sealing plate 8 is directly used, entire implementing process is relatively simple, facilitates operation, and do not influence
Vertical Mill works normally.
In a preferred embodiment, it please refers to shown in Fig. 1, the top position of middle shell 10 is additionally provided with the ring flat-plate outwardly protruded
15, pipeline winding and support of the ring flat-plate 15 for multiple roll cement vertical roll grinder 20 spare mutually can arrange mill well
Roller tube road, so that the design of entire Vertical Mill is succinct, space hold is few.In another preferred embodiment, it is additionally provided on ring flat-plate 15 more
A clip 16, for the pipeline 71 of fixed spare multiple roll cement vertical roll grinder 20 mutually, to prevent pipeline 71 loose or
It slides.
Several preferred embodiments of the invention have shown and described in above description, but as previously described, it should be understood that this hair
It is bright to be not limited to forms disclosed herein, it is not to be taken as the exclusion to other embodiments, and can be used for various other
Combination, modification and environment, and can within that scope of the inventive concept describe herein, by the technology of above-mentioned introduction or related fields or
Knowledge is modified.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, then it all should be
In the protection scope of appended claims of the present invention.
Claims (10)
1. a kind of mutual spare multiple roll cement vertical roll grinder, for carrying out grinding to material, which is characterized in that described mutual
Spare multiple roll cement vertical roll grinder includes:
Mill, for placing the material；
Multiple grinding roller groups are set to above the mill, and the grinding roller quantity of each grinding roller group is two, are symmetrically disposed on institute
State mill two sides；
Multiple swing mechanisms are correspondingly connected with each grinding roller respectively, and each swing mechanism is for controlling corresponding institute
It states grinding roller and swings grinding；And
Hydraulic control device is connect with the multiple swing mechanism, and the hydraulic control device optionally passes through described more
A swing mechanism controls the wherein grinding roller group in multiple grinding roller groups and swings the grinding material, and remaining described mill
Roller group does not work then.
2. mutual spare multiple roll cement vertical roll grinder according to claim 1, which is characterized in that it further include chassis,
It is set to around the mill, the swing mechanism is set on the chassis.
3. mutual spare multiple roll cement vertical roll grinder according to claim 2, which is characterized in that the swing mechanism
Further include swing arm and oscillating oil cylinder, the oscillating oil cylinder is arranged on the chassis, the oscillating oil cylinder by the swing arm and
The corresponding grinding roller connection.
4. mutual spare multiple roll cement vertical roll grinder according to claim 3, which is characterized in that the swing mechanism
It further include pin shaft, the swing arm is hinged by the pin shaft with the oscillating oil cylinder.
5. mutual spare multiple roll cement vertical roll grinder according to claim 1, which is characterized in that the grinding roller group
Quantity is two, and one of them described grinding roller group includes the first grinding roller and third grinding roller, another described grinding roller group includes the
Two grinding rollers and the 4th grinding roller, first grinding roller, second grinding roller, the third grinding roller and the 4th grinding roller are that interval is equal
It is even to be arranged in the mill surrounding.
6. mutual spare multiple roll cement vertical roll grinder according to claim 3, which is characterized in that described spare mutually
Multiple roll cement vertical roll grinder further include middle shell, muti-piece bridge plate and the bearing block being set on each bridge plate, it is described
Middle shell is set to above the chassis and is located on the mill, and each described grinding roller one end passes through the middle shell and position
In in the middle shell, each grinding roller other end is set to the middle hull outside and connect with the swing arm, the swing arm
It is arranged on the bearing block.
7. mutual spare multiple roll cement vertical roll grinder according to claim 6, which is characterized in that described spare mutually
Multiple roll cement vertical roll grinder further include sealing plate, be detachably arranged in each grinding roller pass through the middle shell pair
The position answered simultaneously is connect with each grinding roller, for sealing the middle shell.
8. mutual spare multiple roll cement vertical roll grinder according to claim 6, which is characterized in that the middle shell
Top position is additionally provided with the ring flat-plate outwardly protruded, pipe of the ring flat-plate for the mutual spare multiple roll cement vertical roll grinder
Road winding and support.
9. mutually spare multiple roll cement vertical mill according to claim 8, which is characterized in that be additionally provided on the ring flat-plate multiple
Clip, for fixing the pipeline of the mutual spare multiple roll cement vertical roll grinder.
10. mutual spare multiple roll cement vertical roll grinder according to claim 6, which is characterized in that described standby mutually
Multiple roll cement vertical roll grinder further includes seal cover board, is arranged on the middle shell, and the position with each grinding roller
It sets corresponding.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811010397.7A CN109127005B (en) | 2018-08-31 | 2018-08-31 | Mutual standby multi-roll cement vertical roller mill |
| PCT/CN2019/087902 WO2020042679A1 (en) | 2018-08-31 | 2019-05-22 | Multi-roller vertical cement roller mill having alternately standby grinding rollers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811010397.7A CN109127005B (en) | 2018-08-31 | 2018-08-31 | Mutual standby multi-roll cement vertical roller mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109127005A true CN109127005A (en) | 2019-01-04 |
| CN109127005B CN109127005B (en) | 2021-06-29 |
Family
ID=64825880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811010397.7A Active CN109127005B (en) | 2018-08-31 | 2018-08-31 | Mutual standby multi-roll cement vertical roller mill |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109127005B (en) |
| WO (1) | WO2020042679A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020042679A1 (en) * | 2018-08-31 | 2020-03-05 | 江苏鹏飞集团股份有限公司 | Multi-roller vertical cement roller mill having alternately standby grinding rollers |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020115873A1 (en) | 2020-06-16 | 2021-12-16 | Hans-Jörg Fischer | Process and plant for concrete preparation |
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| DE1607447A1 (en) * | 1966-05-05 | 1969-08-07 | Babcok & Wilcox Ltd | Ball or roller mill |
| CN101332442A (en) * | 2007-06-28 | 2008-12-31 | 中信重工机械股份有限公司 | Vertical roll grinder grinding roll voltage-applying mechanism |
| CN201263987Y (en) * | 2008-09-27 | 2009-07-01 | 济南重工股份有限公司 | Labor saving device of vertical roll grinder |
| CN202143851U (en) * | 2011-06-22 | 2012-02-15 | 北京电力设备总厂 | Vertical mill with mutually standby main and auxiliary roller sets |
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| CN206454730U (en) * | 2016-12-22 | 2017-09-01 | 北方重工集团有限公司 | A kind of four-roller raw material vertical grinding machine |
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| DE2128929C3 (en) * | 1971-06-11 | 1974-06-27 | Loesche Hartzerkleinerungs- Und Zementmaschinen Kg, 4000 Duesseldorf | Roller mill |
| CN1034914C (en) * | 1994-07-22 | 1997-05-21 | 宇部兴产株式会社 | A vertical type roller mill |
| DE19603655A1 (en) * | 1996-02-01 | 1997-08-07 | Loesche Gmbh | Roller mill |
| DE19702854A1 (en) * | 1997-01-27 | 1998-07-30 | Krupp Polysius Ag | Vertical axis mill for grinding mineral materials |
| DE10343218B4 (en) * | 2003-09-12 | 2006-05-04 | Loesche Gmbh | Safety system for a roller grinding mill guarantees the constant availability of four grinding rollers by an arrangement of more than four grinding rollers |
| DE202009004025U1 (en) * | 2009-03-19 | 2010-08-12 | Loesche Gmbh | Hydraulic arrangement for roller mill |
| CN109127005B (en) * | 2018-08-31 | 2021-06-29 | 江苏鹏飞集团股份有限公司 | Mutual standby multi-roll cement vertical roller mill |
-
2018
- 2018-08-31 CN CN201811010397.7A patent/CN109127005B/en active Active
-
2019
- 2019-05-22 WO PCT/CN2019/087902 patent/WO2020042679A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1607447A1 (en) * | 1966-05-05 | 1969-08-07 | Babcok & Wilcox Ltd | Ball or roller mill |
| CN101332442A (en) * | 2007-06-28 | 2008-12-31 | 中信重工机械股份有限公司 | Vertical roll grinder grinding roll voltage-applying mechanism |
| CN201263987Y (en) * | 2008-09-27 | 2009-07-01 | 济南重工股份有限公司 | Labor saving device of vertical roll grinder |
| CN202143851U (en) * | 2011-06-22 | 2012-02-15 | 北京电力设备总厂 | Vertical mill with mutually standby main and auxiliary roller sets |
| CN102600934A (en) * | 2012-03-23 | 2012-07-25 | 长春发电设备总厂 | Turning-out device for maintenance of milling roller of medium-speed wheeled coal mill |
| CN202933747U (en) * | 2012-08-14 | 2013-05-15 | 扬州中材机器制造有限公司 | Efficient grinding mechanism for vertical roller mill |
| CN206454730U (en) * | 2016-12-22 | 2017-09-01 | 北方重工集团有限公司 | A kind of four-roller raw material vertical grinding machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020042679A1 (en) * | 2018-08-31 | 2020-03-05 | 江苏鹏飞集团股份有限公司 | Multi-roller vertical cement roller mill having alternately standby grinding rollers |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020042679A1 (en) | 2020-03-05 |
| CN109127005B (en) | 2021-06-29 |
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