CN104668044B - Cross roll pressurization outer circulation flour mill - Google Patents
Cross roll pressurization outer circulation flour mill Download PDFInfo
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- CN104668044B CN104668044B CN201510111072.8A CN201510111072A CN104668044B CN 104668044 B CN104668044 B CN 104668044B CN 201510111072 A CN201510111072 A CN 201510111072A CN 104668044 B CN104668044 B CN 104668044B
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Abstract
The outer circulation flour mill the invention discloses a kind of cross roll pressurizes, the base bottom installation center pedestal of main frame, bull ring is installed on base top, base end face mounting cup cylinder, main shaft bottom is installed in central shaft bracket, main shaft top arranges Burnisher apparatus, Burnisher apparatus include grinding roller frame and grinding roller, grinding roller frame circumference uniform distribution is fixedly arranged on fixed roll frame and tilting to outer lower side, grinding roller is installed on grinding roller frame and is butted on the up big and down small taper grinding face of bull ring, fixed roll frame is installed on main shaft upper end, is provided with the equal charging tray rotating coaxially above fixed roll frame；Main frame discharging opening is opened in base endoporus bottom, arranges material scraping plate corresponding to main frame discharging opening in base bottom, material scraping plate circumference uniform distribution is installed on to be scraped on bin, scrapes bin and is coaxially fixedly mounted with fixed roll frame, the outer hierarchy system of main frame discharging opening connection machine.The simple low cost of present configuration, maintenance is easy, it is short to change maintenance time；Because of no perching knife material casting action and heavy Burnisher apparatus, the loss of general power greatly reduces.
Description
(1) technical field：
The present invention relates to powder body process equipment, specifically a kind of cross roll pressurization outer circulation flour mill.
(2) background technology：
Flour mill is the widest equipment of breeze sector application.
A kind of universal architecture of pulverizing machine host is：On main machine base equipped with hollow central shaft bracket and coaxial bull ring and
Cover cylinder, cover cylinder is installed grader, main frame main shaft in central shaft bracket, stretch main frame main shaft upper end outside central shaft bracket equipped with
Fixed roll frame (or claiming Flos Mume frame), the grinding roller assembly of circle distribution is on fixed roll frame；In the process of revolution of grinding roller assembly, grinding roller
Assembly makes to keep between each grinding roller and bull ring being in rolling contact by centrifugal action, mutually rolling ore deposit between grinding roller and bull ring
Feed powder is broken, and under system suction function, through grader staged care, qualified breeze is defeated to catcher through grader for the breeze of suspension
Send, unqualified breeze falls main machine base bottom after rise.
The mineral aggregate of main machine base bottom conveys to the area that rolls between grinding roller and bull ring, mainly relies on relieving tool post to drive shovel
The rotation of knife and realize, in rotary course, described perching knife is by oblique for mineral aggregate upthrow between the grinding roller being correspondingly arranged and bull ring.
During perching knife upthrow mineral aggregate, the mineral aggregate of deposition produces resistance to perching knife, and perching knife overcomes the resistance of mineral aggregate to do
Work(, certainly will will consume the power of part main frame, this is that this kind of flour mill yield in unit time is high, inefficiency the reason it
One.
(3) content of the invention：
For the deficiencies in the prior art, the technical problem to be solved is to propose one kind to lift working (machining) efficiency
For the purpose of cross roll pressurization outer circulation flour mill.
Can solve the problem that the cross roll pressurization outer circulation flour mill of above-mentioned technical problem, including pulverizing main frame, described pulverizing main frame
Base endoporus bottom central shaft bracket is installed, bull ring, base end face mounting cup cylinder are installed in described base endoporus top, and main frame is given
Material mouth is opened in the upper lid of cover cylinder, and main frame main shaft bottom is installed in central shaft bracket by bearing arrangement and extends downwardly from connecting and passes
Motivation structure, main frame main shaft is installed the Burnisher apparatus of pulverizing main frame, except that described Burnisher apparatus include fixed roll frame, grinding roller
Frame and grinding roller, described grinding roller frame circumference uniform distribution is on fixed roll frame and angularly disposed to outer lower side, has described oblique degree of freedom
Grinding roller is installed on grinding roller frame and is butted on the (included angle of grinding roller frame on the up big and down small taper grinding face of bull ring by shaft of grinding roller
Identical with the cone angle of taper grinding face), described fixed roll frame is installed on main frame main shaft upper end, is provided with coaxial turning above described fixed roll frame
Dynamic equal charging tray；Main frame discharging opening is opened in base endoporus bottom by central shaft bracket, corresponding to main frame discharging opening in base
Bottom hole portion arranges material scraping plate, and described material scraping plate circumference uniform distribution is installed on to be scraped on bin, and described to scrape bin coaxial on central shaft bracket
It is set with and its top is connected with fixed roll frame, main frame discharging opening passes through the outer hierarchy system of pipeline connection machine；The outer hierarchy system of described machine
Including grading, lifting machine, grader and cyclone separator, described grading, lifting machine and cyclone separator are respectively arranged on pulverizing main frame
Both sides, above pulverizing main frame, the charging aperture of grading, lifting machine passes through pipeline connection main frame discharging opening, classification to described grader
The discharging opening of elevator passes through the charging aperture of pipeline connection grader, and the qualified products of described grader enter whirlwind by pipeline
Separator collection, the substandard product of grader is milled again by main frame material inlet backflow pulverizing main frame.
In said structure, raw material enters in pulverizing main frame through material inlet, through the evenly distributed taper falling into bull ring of equal charging tray
Grinding face (taper grinding face increased area of milling, and the weight component of grinding roller acts on and increased grinding forces on bull ring) is ground
Mill, the material after milling falls in base endoporus bottom, is taken to main frame discharging opening by material scraping plate and falls into the outer hierarchy system of machine and carries out point
Choosing.
Grinding roller can be set up in sustained height position on fixed roll frame, then described grinding roller is in sustained height and becomes monolayer
Roller；Or described grinding roller is set up in the diverse location on fixed roll frame, then described grinding roller is in differing heights and becomes more than two-layer
Roller.
The upper and lower position that conventionally described grinding roller frame is fixedly arranged on fixed roll frame and form the two-layer roller of upper and lower dislocation.
A kind of structure that grinding roller has described oblique degree of freedom can be made to be：Described grinding roller frame is dual-layer Parallel double leval jib machine
Structure, the shaft of grinding roller of the relative hinge point difference hinge fixed roll frame of described parallel four-bar linkage and grinding roller, described fixed roll frame sets
Have afterburning to grinding roller to improve the boosting mechanism of grinding forces, described boosting mechanism include rolling over shape boosting-rod, afterburning blocks, gusset,
, located at fixed roll top of the trellis central authorities, described gusset is coaxial for compression spring and hydraulic jack or cylinder, described hydraulic jack or cylinder
On the piston rod that hydraulic jack or cylinder protrude upward, described folding shape boosting-rod corresponds to each grinding roller circumference uniform distribution setting,
Respectively dress is cut with scissors at the folding shape position of folding shape boosting-rod, and described compression spring press-fits to be held in the inner side transverse bar body of folding shape boosting-rod and add
Between the plate body of power plate corresponding position, for balancing pressure, described gusset is provided with the spring force tune adjusting spring pressure size
Section assembly, the afterburning blocks vertical with described degree of freedom direction are inclined in corresponding dual-layer Parallel quadric chain, afterburning blocks
Upper and lower end exceeds dual-layer Parallel quadric chain, and the upper end of afterburning blocks is connected to the bottom of the folding shape boosting-rod body of rod elevationally outward,
The upper/lower terminal of described grinding roller exceeds dual-layer Parallel quadric chain and is installed in afterburning blocks upper and lower end outwardly extending portion respectively
The draw-in groove bottom opening up on position, described draw-in groove direction is identical with described degree of freedom direction.In said structure, described boosting mechanism to
Under act on folding shape boosting-rod transverse bar body in end (being equivalent to the drive end of lever), then roll over shape boosting-rod vertical body of rod bottom
Portion (being equivalent to the driven end of lever) drives afterburning blocks to push grinding roller on bull ring, with the secondary increase grinding forces to bull ring for the grinding roller；
Described hydraulic jack or the setting of cylinder, are in order to process different materials and to facilitate the regulation of grinding forces.
The circumferential edges of described equal charging tray are provided with rib, prevent material from tapping cover cylinder because centrifugal force throws away and produce noise.
Beneficial effects of the present invention：
1st, cross roll pressurization outer circulation flour mill of the present invention adopts outer circulation separation finished product, and air exhauster energy loss is little, equipment
Easy to maintenance.
2nd, it is not provided with perching knife in present configuration, because of no material casting action, decrease power consumption, the total work of pulverizing main frame
Rate loss substantially reduces.
3rd, the material casting action producing due to not having shovel blade mechanism in present configuration, that is, will not because of hard iron ore deposit, be scattered ferrum
Block and occur card machine or ruin machine situation occur.
4th, the present invention mills material it is achieved that the gravity of cross roll and centrifugal force are exerted oneself simultaneously using cross roll, improves and mills
Efficiency.
5th, the present invention sets up boosting mechanism, is to facilitate grinding forces to adjust to process different material.
6th, the equal charging tray outer rim of the present invention is provided with backgauge side, so that material is not produced and make an uproar because centrifugal force throws away percussion cover cylinder
Sound, the area that mills uniformly trickled down by material, and distribution is more reasonable.
7th, present configuration is simple, low cost, manufacture handling ease, for the preferred unit of flour mill of new generation.
(4) brief description：
Fig. 1 is the structural representation of one embodiment of the present invention.
Fig. 2 is the top view of Fig. 1 embodiment.
Fig. 3 is the structural representation of pulverizing main frame in Fig. 1, Fig. 2 embodiment.
Fig. 4 is the A direction view in Fig. 3.
Figure number identifies：1st, pulverizing main frame；2 bases；3rd, central shaft bracket；4th, bull ring；5th, cover cylinder；6th, main frame material inlet；7th, on
Lid；8th, main frame main shaft；9th, grinding roller frame；10th, grinding roller；11st, fixed roll frame；12nd, feed bin；13rd, equal charging tray；14th, main frame discharging opening；15、
Material scraping plate；16th, scrape bin；17th, grading, lifting machine；18th, roll over shape boosting-rod；19th, grader；20th, cyclone separator；21st, shaft coupling
Device；22nd, blower fan；23rd, afterburning blocks；24th, gusset；25th, compression spring；26th, hydraulic jack；27th, draw-in groove；28th, aggregate bin；29、
Collecting box.
(5) specific embodiment：
Illustrated embodiment is described further to technical scheme below in conjunction with the accompanying drawings.
Cross roll pressurization outer circulation flour mill of the present invention includes pulverizing main frame 1 and the outer hierarchy system of machine.
The base 2 of described pulverizing main frame 1 is fixed on concrete machine block, and base 2 endoporus bottom is coaxially installed with hollow
Central shaft bracket 3, the top of base 2 endoporus is co-axially mounted bull ring 4, and the flour milling of described bull ring 4 is up big and down small taper grinding face,
Cover cylinder 5 is co-axially mounted on base 2 end face, described cover cylinder 5 offers main frame feed by the capping of upper lid 7, the center of described upper lid 7
Mouth 6；Main frame main shaft 8 bottom of pulverizing main frame 1 is installed in central shaft bracket 3 by the bearing arrangement of upper and lower, main frame main shaft 8
Lower end stretch out central shaft bracket 3 and the reductor being driven by motor connected by shaft coupling 21, the Burnisher apparatus of pulverizing main frame 1 lead to
Cross the top (stretching out the part of central shaft bracket 3) that fixed roll frame 11 is installed on main frame main shaft 8；Main frame discharging opening 14 is in central shaft bracket 3
Other base 2 endoporus bottom opens up, blanking by the way of material scraping plate 15 scraper, and described material scraping plate 15 circumference uniform distribution is installed on bottom
Bin 16 bottom is scraped, described top and the fixed roll frame 11 scraped bin 16 and central shaft bracket 3 coaxial package, scrape bin 16 in seat 2
Coaxially it is fixedly mounted with, the outer hierarchy system of described machine passes through pipeline connection main frame discharging opening 14；Installed in fixed roll frame 11 top by support
The equal charging tray 13 rotating coaxially, the circumferential edges of described equal charging tray 13 are provided with rib, as shown in Figure 3.
Described Burnisher apparatus include grinding roller frame 9 and grinding roller 10, and described grinding roller frame 9 circumference uniform distribution is fixedly arranged on fixed roll frame 11 simultaneously
Angularly disposed to outer lower side, described grinding roller 10 is installed on grinding roller frame 9 by shaft of grinding roller and is butted on the up big and down small taper of bull ring 4
On grinding face, the included angle of grinding roller frame 9 is identical with the cone angle of taper grinding face, and in described Burnisher apparatus, described grinding roller 10 has
Have in described oblique free-moving function, as shown in Figure 3.
The grinding roller frame 9 of described Burnisher apparatus is fixedly arranged on the sustained height position on fixed roll frame 11, then multiple grinding rollers 10 are in
Form monolayer roller in same aspect, or the grinding roller frame 9 of described Burnisher apparatus be fixedly arranged on the upper and lower height and position of fixed roll frame 11,
Then the grinding roller 10 of half is on face layer the oblique upper taper grinding face being butted on bull ring 4, and second half grinding roller 10 is in
On subsurface the oblique lower taper grinding face being butted on bull ring 4, the grinding roller 10 of upper and lower layer forms double-deck roll structure and upper and lower
Stagger in grinding roller 10 position of layer.
The version that grinding roller 10 has described oblique degree of freedom can be made to be：
Described grinding roller frame 9 is upper and lower dual-layer Parallel quadric chain, the relative hinge point of described parallel four-bar linkage
The shaft of grinding roller of hinge fixed roll frame 11 and grinding roller 10 respectively.
In mill processes, described structure can compensate the abrasion of grinding roller 10 automatically, and can effectively avoid the thing of area's bulk of milling
Material.
For improving grinding forces, described fixed roll frame 11 is provided with along the described oblique boosting mechanism promoting grinding roller 10, institute
State boosting mechanism and include " 7 " font folding shape boosting-rod 18 (including the laterally body of rod and the elevationally outward body of rod inside top), afterburning blocks
23rd, gusset 24, compression spring 25 and hydraulic jack 26, described hydraulic jack 26 is installed on below equal charging tray 13 by oil cylinder seat
Fixed roll frame 11 center of top, described gusset 24 is coaxially installed on the piston rod that hydraulic jack 26 protrudes upward, described folding
Shape boosting-rod 18 corresponds to each grinding roller 10 circumference uniform distribution setting, and the folding shape position hinge of each folding shape boosting-rod 18 is loaded on fixed roll frame 11
On, described compression spring 25 press-fit in the transverse bar body of folding shape boosting-rod 18 end and the plate body of gusset 24 corresponding position it
Between, the afterburning blocks 23 vertical with described degree of freedom direction are inclined in that in corresponding dual-layer Parallel quadric chain, (avoidance opens grinding roller
10), the upper and lower end of afterburning blocks 23 exceeds dual-layer Parallel quadric chain, and wherein, the upper end of afterburning blocks 23 is connected to folding shape reinforcing
The vertical body of rod bottom of bar 18, the upper/lower terminal of described grinding roller 10 exceeds dual-layer Parallel quadric chain being installed in respectively and adds
Power block 23 upper and lower end stretches out draw-in groove 27 bottom, described draw-in groove 27 direction and the described degree of freedom direction phase opening up on position
With；Due to employing the boosting mechanism of described structure, thus grinding roller 10 is made to produce extra pressure to bull ring 4, pulverizing main frame 1 work
When making, the weight component of the centrifugal force of extra pressure and grinding roller 10 and grinding roller 10 synthesizes between grinding roller 10 and bull ring 4 jointly
Grinding pressure, as shown in Figure 3, Figure 4.
Described main frame discharging opening 14 passes through the outer hierarchy system of pipeline connection machine.
The outer hierarchy system of described machine includes grading, lifting machine 17, grader 19 and cyclone separator 20, described grading, lifting
Machine 17 passes through located at the right side of pulverizing main frame 1, described grader 19 located at the left side of pulverizing main frame 1, described cyclone separator 20
Frame is installed on above pulverizing main frame 1, and described main frame discharging opening 14 passes through pipeline connection grading, lifting machine 17 bottom of oblique lower section
The charging aperture in portion, the discharging opening at grading, lifting machine 17 top passes through the charging aperture of the pipeline connection grader 19 of oblique lower section, point
The discharging opening of level machine 19 qualified products connects the charging aperture of cyclone separator 20, grader 19 substandard product by horizontal pipeline
By aggregate bin 28 backflow main frame material inlet 6, described main frame material inlet 6 goes out also by the pipeline connection feed bin 12 of oblique top
Material mouth, as shown in Figure 1, Figure 2, Figure 3 shows.
In the outer hierarchy system of described machine, the negative pressure of grader 19 and cyclone separator 20 is produced by blower fan 22, grader 19
Qualified powder body send in cyclone separator 20 and carry out separation of air from dust, detached powder is finished product, and finished product comes together in collecting box
29；The unqualified material of grader 19 falls to the aggregate bin 28 of grader 19, flows back in pulverizing main frame 1 through main frame material inlet 6
The raw material continuing to be imported with feed bin 12 is together fallen on equal charging tray 13 and is uniformly scattered and mills to the area that mills, and so constantly circulates.
Claims (4)
1. cross roll pressurization outer circulation flour mill, including pulverizing main frame (1), base (2) the endoporus bottom peace of described pulverizing main frame (1)
Equipped with central shaft bracket (3), bull ring (4), base (2) end face mounting cup cylinder (5) are installed in described base (2) endoporus top, and main frame is given
Material mouth (6) is opened in the upper lid (7) of cover cylinder (5), and main frame main shaft (8) bottom is installed in central shaft bracket (3) by bearing arrangement
And extend downwardly from connecting drive mechanism, the upper Burnisher apparatus installing pulverizing main frame (1) of main frame main shaft (8), described Burnisher apparatus bag
Include fixed roll frame (11), grinding roller frame (9) and grinding roller (10), described grinding roller frame (9) circumference uniform distribution is under fixed roll frame (11) is upper and outside
Side is angularly disposed, and the grinding roller (10) with oblique degree of freedom is installed on grinding roller frame (9) and is butted on bull ring (4) by shaft of grinding roller
On little taper grinding face under big, described fixed roll frame (11) is installed on main frame main shaft (8) upper end, sets above described fixed roll frame (11)
There is the equal charging tray (13) rotating coaxially；Main frame discharging opening (14) is opened in base (2) endoporus bottom by central shaft bracket (3), right
Should be in main frame discharging opening (14) in base (2) endoporus bottom setting material scraping plate (15), described material scraping plate (15) circumference uniform distribution is installed
In scraping on bin (16), described scrape bin (16) in the upper coaxial package of central shaft bracket (3) and its top is connected with fixed roll frame (11),
Main frame discharging opening (14) passes through the outer hierarchy system of pipeline connection machine；The outer hierarchy system of described machine includes grading, lifting machine (17), divides
Level machine (19) and cyclone separator (20), described grading, lifting machine (17) and cyclone separator (20) are respectively arranged on pulverizing main frame
(1) both sides, above pulverizing main frame (1), the charging aperture of grading, lifting machine (17) passes through pipeline connection to described grader (19)
Main frame discharging opening (14), the discharging opening of grading, lifting machine (17) passes through the charging aperture of pipeline connection grader (19), described classification
The qualified products of machine (19) enter cyclone separator (20) by pipeline and collect, and the substandard product of grader (19) passes through main frame
Again mill it is characterised in that grinding roller (10) can be made to have described oblique degree of freedom in material inlet (6) backflow pulverizing main frame (1)
Structure is：Described grinding roller frame (9) is dual-layer Parallel quadric chain, and the relative hinge point of described parallel four-bar linkage cuts with scissors respectively
Chain fixed roll frame (11) and the shaft of grinding roller of grinding roller (10), described fixed roll frame (11) is provided with to grinding roller (10) reinforcing to improve grinding forces
Boosting mechanism, described boosting mechanism include roll over shape boosting-rod (18), afterburning blocks (23), gusset (24), compression spring (25)
With hydraulic jack (26) or cylinder, described hydraulic jack (26) or cylinder are located at fixed roll frame (11) center of top, described gusset
(24) with being located on the piston rod that hydraulic jack (26) or cylinder protrude upward, described folding shape boosting-rod (18) corresponds to each mill
Roller (10) circumference uniform distribution is arranged, the folding shape position hinge dress of each folding shape boosting-rod (18), and described compression spring (25) press-fits in folding shape
In the inner side transverse bar body of boosting-rod (18) between end and the plate body of gusset (24) corresponding position, with described oblique degree of freedom side
It is inclined in corresponding dual-layer Parallel quadric chain to vertical afterburning blocks (23), the upper and lower end of afterburning blocks (23) is beyond double
Layer parallel four-bar linkage, the upper end of afterburning blocks (23) is connected to the bottom of folding shape boosting-rod (18) body of rod elevationally outward, described
The upper/lower terminal of grinding roller (10) exceeds dual-layer Parallel quadric chain and is installed in afterburning blocks (23) upper and lower end respectively to extension
Draw-in groove (27) bottom opening up on extending portion position, described draw-in groove (27) direction is identical with described oblique degree of freedom direction.
2. cross roll according to claim 1 pressurization outer circulation flour mill it is characterised in that：Described grinding roller frame (9) is located at fixed
The upper sustained height position of roll stand (11), described grinding roller (10) is in sustained height and becomes monolayer roller；Or described grinding roller frame (9) sets
Diverse location on fixed roll frame (11), described grinding roller (10) is in differing heights and becomes two-layer with upper roller.
3. cross roll according to claim 1 pressurization outer circulation flour mill it is characterised in that：Described grinding roller frame (9) is fixedly arranged on
Upper and lower position on fixed roll frame (11) and form the two-layer roller of upper and lower dislocation.
4. according to any one in claims 1 to 3 cross roll pressurization outer circulation flour mill it is characterised in that：Described equal
The circumferential edges of charging tray (13) are provided with rib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510111072.8A CN104668044B (en) | 2015-03-13 | 2015-03-13 | Cross roll pressurization outer circulation flour mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510111072.8A CN104668044B (en) | 2015-03-13 | 2015-03-13 | Cross roll pressurization outer circulation flour mill |
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| Publication Number | Publication Date |
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| CN104668044A CN104668044A (en) | 2015-06-03 |
| CN104668044B true CN104668044B (en) | 2017-03-01 |
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| CN201510111072.8A Active CN104668044B (en) | 2015-03-13 | 2015-03-13 | Cross roll pressurization outer circulation flour mill |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105944797B (en) * | 2016-07-01 | 2018-04-10 | 桂林晟兴机械制造有限公司 | Outer circulation flour mill |
| CN106000552A (en) * | 2016-07-01 | 2016-10-12 | 桂林晟兴机械制造有限公司 | Vertical outer circulation pulverizer |
| CN106345579B (en) * | 2016-09-20 | 2019-05-03 | 派勒（天津）纳米技术有限公司 | The assorting cylinder of dry type milling system |
| CN109569842B (en) * | 2018-11-26 | 2021-06-29 | 江苏鹏飞集团股份有限公司 | Circulating grinding cement vertical mill with preheating grinding function |
| CN110860342A (en) * | 2019-11-15 | 2020-03-06 | 南京钜力智能制造技术研究院有限公司 | External circulation roller type vertical mill |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191128244A (en) * | 1911-12-15 | 1912-05-09 | George Stockham Emerick | Improvements in "Grinding Mills". |
| CN203002427U (en) * | 2012-10-29 | 2013-06-19 | 桂林晟兴机械制造有限公司 | Automatic supercharging device for grinding roller of flour mill |
| CN202893429U (en) * | 2012-11-16 | 2013-04-24 | 郑州维科重工机械有限公司 | Auxiliary supporting device between grinding roll of flour mill and star rack |
| CN103721796B (en) * | 2014-01-03 | 2015-09-30 | 桂林晟兴机械制造有限公司 | Cross roll waterfall material flour mill |
| CN204051792U (en) * | 2014-08-28 | 2014-12-31 | 肖先成 | Cross roll regrinding Gas fluid pressure flour mill |
| CN104399562A (en) * | 2014-11-20 | 2015-03-11 | 桂林晟兴机械制造有限公司 | External-circulating ball roller way-type mill |
| CN204564238U (en) * | 2015-03-13 | 2015-08-19 | 桂林晟兴机械制造有限公司 | Cross roll pressurization outer circulation flour mill |
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