CN105435909B - The vertical pulverizer of efficient damping sealing - Google Patents
The vertical pulverizer of efficient damping sealing Download PDFInfo
- Publication number
- CN105435909B CN105435909B CN201510950365.5A CN201510950365A CN105435909B CN 105435909 B CN105435909 B CN 105435909B CN 201510950365 A CN201510950365 A CN 201510950365A CN 105435909 B CN105435909 B CN 105435909B
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- Prior art keywords
- vertical shaft
- sealing
- bearing
- plum blossom
- damping
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Classifications
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- 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
- B02C15/08—Mills with balls or rollers centrifugally forced against the inner surface of a ring, the balls or rollers of which are driven by a centrally arranged member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses a kind of vertical pulverizers of efficient damping sealing, the grinding roller assembly of work is driven including plum blossom frame and by suspension arms mechanism, suspension arms mechanism includes the vertical shaft being arranged in dovetail slotted disk through-hole, the Gravity support device being connected with grinding roller assembly is provided at the top of vertical shaft, runner assembly is provided on vertical shaft：Upper bearing (metal), wear-resistant sleeve and lower bearing including being sleeved on vertical shaft lower bearing intracavitary, the inner hole wall for withholding the upper bearing (metal) gland on upper bearing (metal) are upwardly extended along vertical shaft, form sheath；Sealing shroud is fixed in plum blossom frame dovetail groove tray bottom, sealing shroud, which extends downwardly, to be coated on outside sheath, and upper and lower oil seals and upper-lower seal steel disk are provided in the toroidal cavity formed between the inner wall of sealing shroud and sheath outer wall, grease seal chamber is formed between upper and lower oil seals.The invention can ensure that the high sealing characteristic of bearing chamber, system stability is high, maintenance rate is low, it can be achieved that the sustainable production of user.Compared with same machines, 30% can be increased production.
Description
Technical field
The present invention relates to flour mill, more particularly, to a kind of vertical pulverizer of efficient damping sealing.
Background technology
Vertical pulverizer work when, plum blossom frame rotation, by suspension arrangement drive grinding roller assembly centrifugal force effect
Under using the vertical shaft of suspension arrangement as center of circle longitudinal oscillation, i.e. vertical shaft is motionless, and grinding roller assembly is rotated relative to vertical shaft, ensure grinding roller begin
It is close to eventually with bull ring, the material between grinding roller and bull ring is milled powdering.The existing mill of vertical pulverizer of my company's production
There are two types of structures for the suspended swinging device of roller assembly：One is as shown in Figure 1, the upper and lower anti-wear sleeve that will be slidably matched with vertical shaft
Inner hole wall on open up annular oil groove, while oil duct is also opened up on vertical shaft surface, realize the continuous lubrication to swing part, avoid
Vertical shaft dry combustion method locking, ensures vertical shaft flexible swinging, and concrete structure can be found in Chinese invention patent《Grinding roller assembly vertical shaft suspension dress
It puts》（The patent No.：2014207718850）；Secondly as shown in Fig. 2, by being arranged rolling bearing group on vertical shaft, grinding roller assembly leads to
It crosses vertical shaft and bearing group is realized and swung, reduce the problem of frictional resistance is big when vertical shaft is swung, while between mechanism stress part
It is connected by the shock-absorbing sleeve of polyurethane material and carries out damping, concrete structure can be found in Chinese invention patent《Grinding roller of wheat flour-milling assembly
Vertical shaft suspension arrangement》（The patent No. 2015200669909）.Due to inclement condition when flour mill works, a large amount of dust can be generated,
Although dust enters inside suspended swinging device when above two structure employs shaft sealer to prevent work, from mesh
From the point of view of preceding situation about using, there are still into powder phenomenon, the powder of entrance inside the suspended swinging device of the flour mill of both structures
Dirt stirs with internal lubricant grease and forms greasy filth together, when greasy filth reaches a certain amount of, still will appear and is tightly embraced with main shaft
Together, the phenomenon that leading to spindle operation failure, causes maintenance rate high, and dismounting is difficult when repairing, and when increasing repair
Between, preventing user, flour mill yield reduces in the unit interval, and the design yield of flour mill is not achieved from continuous production.Meanwhile by
It is vibrated acutely when flour mill works, noise is larger, although devising damping device, there are still rooms for improvement.
Invention content
The purpose of the present invention is to provide a kind of vertical pulverizers of efficient damping sealing, reduce maintenance of equipment rate, realize
The sustainable production of user.
To achieve the above object, the present invention can take following technical proposals：
The vertical pulverizer of efficient damping sealing of the present invention, including plum blossom frame and the equalization setting being placed in body
The grinding roller assembly of work is driven by plum blossom frame suspension arms mechanism on the plum blossom frame, the suspension arms mechanism includes setting
The vertical shaft in the plum blossom frame dovetail slotted disk longitudinal hole is put, the rotation with shaft sealer is provided on the vertical shaft
Component is provided with the Gravity support device being connected with the grinding roller assembly at the top of the vertical shaft,
To make its frictional force small, rotation is flexible, and the runner assembly includes being sleeved on the vertical shaft lower bearing intracavitary
Upper bearing (metal) and lower bearing, are provided with wear-resistant sleeve between the upper bearing (metal) and lower bearing, and the lower bearing bottom is provided with lower axle
Pressure cap, the inner hole wall for withholding the upper bearing (metal) gland on the upper bearing (metal) are upwardly extended along the vertical shaft, and formation is coated on institute
State the sheath outside vertical shaft；
To ensure the leakproofness of bearing, avoid into powder in bearing bore room, the shaft sealer includes being connected in the plum
The sealing shroud of flower stand dovetail groove tray bottom, the sealing shroud, which extends downwardly, to be coated on outside the sheath, the step of the sealing shroud
Upper and lower oil seals and upper-lower seal steel disk are provided in the toroidal cavity formed between shape inner wall and the sheath outer wall, are placed in described
The upper and lower oil seals of toroidal cavity bottom are arranged at intervals to form annular grease seal chamber, the oiling being opened on the sealing shroud side wall
Hole is connected with the grease seal chamber, and pump nozzle, the upper-lower seal steel that activity is stacked together have been screwed on the oil filler point
Disk is placed in the cavity in the portion of binding that oils.
To keep the support force upward to grinding roller assembly, grinding roller assembly gravity is effectively shared to upper and lower bearing and wear-resistant sleeve
The torque of generation, the Gravity support device include the H-shaped structure in vertical section that button is placed on the plum blossom frame dovetail slotted disk
Rubber spring set has been sequentially placed rubber spring, lower ball base and upper ball base, under described from bottom to top in rubber spring set
The faying face of ball seat and upper ball base is the spherical structure to raise up；The support extended on ball seat at the top of from the grinding roller assembly
Through-hole is offered on frame, the compression leading screw being placed in the upper ball base top groove extends the through-hole, has screwed thereon
Locking nut.
To minimize vibratory output when flour mill works normally, the bottom level of the plum blossom frame longitudinal direction dovetail groove is embedding
Yielding rubber pad is placed with, the outer side edges of the yielding rubber pad are in the arcuate structure of indent；Two in longitudinal dovetail groove are oblique
Side and rear portion bottom edge face are respectively arranged with damping inclined plate and damping back plate, and the rear portion base of the longitudinal direction dovetail groove extends internally
It sets fluted, the expansion set of damping back plate described in top pressure is placed in the groove.
During specific making, the expansion set is by back side panel and the upper and lower rubber block group for being fixed on the back side panel upper and lower ends
Into being vertically arranged with support post between the upper and lower rubber block.
The side wall of the upper and lower rubber block from both ends to center inside contract, form that both ends are big, intermediate small trapezium structure.
The damping inclined plate and damping back plate is add steel rubber slab.
The advantage of the invention is that ensure that bearing chamber without dust, that is, ensure that the sealing of bearing chamber when flour mill works
Property, make that system stability is extra-high, maintenance rate reduces, realize the sustainable production of user.With tradition compared with the flour mill of model, this
The flour mill of invention can increase production 30%.
Description of the drawings
Fig. 1, Fig. 2 are the structure diagrams of existing flour mill plum blossom frame suspended swinging device.
Fig. 3 is the structure diagram of the present invention.
Fig. 4 is the sectional structure chart of plum blossom frame suspension arms mechanism in Fig. 3.
Fig. 4-1 is A portions enlarged drawing in Fig. 4.
Fig. 5 is the structure diagram of plum blossom frame in Fig. 3.
Fig. 6 is the enlarged structure schematic diagram of expansion set in Fig. 5.
Specific embodiment
As shown in Fig. 3,4,4-1, the vertical pulverizer of efficient damping sealing of the present invention, including being placed in body
Plum blossom frame 1 and equalization setting drive the grinding roller assembly 3 of work, the present invention on plum blossom frame by plum blossom frame suspension arms mechanism 2
Suspension arms mechanism 2 include being arranged on vertical shaft 2.1 in 4 longitudinal hole of plum blossom frame dovetail slotted disk, be provided on vertical shaft 2.1
Runner assembly with shaft sealer is provided with the Gravity support device being connected with grinding roller assembly 3 at 2.1 top of vertical shaft；
The runner assembly that the present invention uses includes the upper bearing (metal) 2.2 and lower bearing that are sleeved on 2.1 lower bearing intracavitary of vertical shaft
2.3, wear-resistant sleeve 2.4 is provided between upper bearing (metal) 2.2 and lower bearing 2.3, lower bearing bottom is provided with lower axle pressure cap 2.5
（The internal gland for being bolted on 2.1 lower end of vertical shaft is additionally provided in the lower axle pressure cap 2.5）, withhold in upper bearing (metal)
On the inner hole wall of upper bearing (metal) gland 2.6 upwardly extended along vertical shaft 2.1, form the sheath 2.7 being coated on outside vertical shaft；
Shaft sealer used in the present invention includes the sealing shroud 2.8 for being connected in plum blossom frame dovetail groove tray bottom, sealing shroud
2.8 extend downwardly and are coated on outside sheath 2.7, the toroidal cavity formed between the step inner wall of sealing shroud 2.8 and sheath outer wall
In be provided with oil sealing 2.9, lower oil sealing 2.10 and it is upper sealing steel disk 2.11, it is lower sealing steel disk 2.12, be placed in toroidal cavity bottom
Upper oil sealing 2.9, lower oil sealing 2.10 be arranged at intervals and form annular grease seal chamber 2.13, be opened on 2.8 side wall of sealing shroud
Oil filler point is connected with annular grease seal chamber 2.13, and pump nozzle 2.14 has been screwed on oil filler point, and activity is stacked together upper
Sealing steel disk 2.11, lower sealing steel disk 2.12 are placed in the cavity at 2.9 top of oil sealing.
The Gravity support device of the present invention includes the rubber for the H-shaped structure in vertical section that button is placed on plum blossom frame dovetail slotted disk 4
Glue spring pocket 2.15, rubber spring set 2.15 in be sequentially placed from bottom to top rubber spring 2.16, lower ball base 2.17 and on
The faying face of ball seat 2.18, lower ball base 2.17 and upper ball base 2.18 is the spherical structure to raise up；3 top ball of autogenous grinding roller assembly
Through-hole is offered on the supporting rack 2.19 extended on seat, 2.20 self-supporting of compression leading screw being placed in upper ball base top groove
The through-hole of frame 2.19 extends out, and has screwed locking nut 2.21 thereon.
Further to mitigate vibration during flour mill work, as shown in figure 5, in the bottom water of the longitudinal dovetail groove of plum blossom frame 1
Flat to have embedded yielding rubber pad 1.1, the outer side edges of yielding rubber pad 1.1 are in the arcuate structure of indent；The two of longitudinal dovetail groove
Bevel edge and rear portion bottom edge face are respectively arranged with damping inclined plate 1.2 and damping back plate 1.3, damping inclined plate 1.2 and damping back plate 1.3
It is to add steel rubber slab, it is made to have both rigidity and flexibility simultaneously；Extending internally on the rear portion base of longitudinal dovetail groove, it is recessed to be provided with
Slot is placed with the expansion set 1.4 of top pressure damping back plate 1.3 in groove.
As shown in fig. 6, the expansion set is by back side panel 1.41 and is fixed on the upper rubber block 1.42 of back side panel upper and lower ends, lower rubber
Blob of viscose 1.43 forms, and support post 1.44 is vertically arranged between upper rubber block 1.42 and lower rubber block 1.4.To ensure expansion set
The side wall of 1.4 fixed effect, upper rubber block 1.42 and lower rubber block 1.43 from both ends to center inside contract, formed both ends it is big,
Intermediate small trapezium structure.
During present invention assembling, first upper bearing (metal) gland 2.6 is sleeved on vertical shaft 2.1, then successively by upper bearing (metal) 2.2, wear-resistant sleeve
2.4 and lower bearing 2.3 load onto, lower bearing internal gland by bolt presses on 2.1 end face of vertical shaft, then by lower axle pressure cap
2.5 use bolt presses.Sealing shroud 2.8 is sleeved on outside the sheath 2.7 that upper bearing (metal) gland 2.6 extends upward, installs oil sealing
2.9th, lower oil sealing 2.10 and upper sealing steel disk 2.11 and lower sealing steel disk 2.12, screw on pump nozzle 2.14.By plum blossom frame dovetail
Slotted disk 4 is fixed on vertical shaft 2.1, and one is bolted to bolt presses, then by sealing shroud 2.8 and plum blossom frame dovetail slotted disk 4
It rises.Yielding rubber pad 1.1 is loaded onto on plum blossom frame 1, the plum blossom frame suspension arms mechanism 2 and grinding roller assembly 3 that then will be assembled
On plum blossom frame 1, after adjusting good position, damping inclined plate 1.2 and damping back plate 1.3 are loaded onto respectively, and is carried out with expansion set 1.4
It is fixed.Gravity support device is finally installed：Rubber spring is covered into 2.15, rubber spring 2.16, lower ball base 2.17 and upper ball base
2.18 are placed sequentially on plum blossom frame dovetail slotted disk 4, compress leading screw 2.20 and are placed in upper ball base top groove, by rubber spring
2.16 pressure adjustment is suitable, is locked with locking nut 2.21.
During work, plum blossom frame 1 rotates, grinding roller assembly 3 under the influence of centrifugal force with vertical shaft 2.1 be center of circle longitudinal oscillation,
Its neutral axis 2.1 is fixed, and upper bearing (metal) 2.2 and lower bearing 2.3 are rotated relative to vertical shaft 2.1, and grinding roller is made to be close to bull ring always to object
Material is rolled.Since bearing operation is flexible, frictional force is small, and whole system is rubbed relative to the slip of anti-wear sleeve shown in FIG. 1
Power is wiped to greatly reduce.
Simultaneously as plum blossom frame 1 passes through damping inclined plate 1.2, damping back plate 1.3 and expansion set 1.4 and plum blossom frame dovetail slotted disk 4
It is connected as a single entity with vertical shaft 2.1, when grinding roller assembly 3 generates larger vibration, damping inclined plate 1.2 and damping back plate 1.3 can will shake
Momentum minimizes, and ensure that the normal operation of flour mill.
When being worn between lower ball base 2.17 and upper ball base 2.18 due to relative motion, rubber spring 2.16 can pass through
Expansion reduces decrement, so as to obtain position compensation, remains the support force upward to grinding roller assembly 3, effectively shares grinding roller
The torsion that 3 gravity of assembly generates upper bearing (metal) 2.2, wear-resistant sleeve 2.4 and lower bearing 2.3, make upper bearing (metal) 2.2, wear-resistant sleeve 2.4 and under
The service life of bearing 2.3 extends.
The shaft sealer that particularly present invention uses, passes through 2.14 upward oil sealing 2.9 of pump nozzle, lower oil sealing 2.10 first
Between annular grease seal chamber 2.13 in inject lubricant grease（Such as butter）, ensure that the lubrication and leakproofness of oil sealing, simultaneously
When there is dust to enter in annular seal space 2.13 by lower oil sealing 2.10, grease can cling dust, make it that must not enter bearing chamber
In；The sheath 2.7 for being formed and being coated on outside vertical shaft is upwardly extended along vertical shaft 2.1 by the inner hole wall of upper bearing (metal) gland 2.6, is equivalent to shape
Into labyrinth seal, stroke overlength, sealing performance is more preferable；And the upper sealing steel disk 2.11 and lower sealing steel disk being stacked together
2.12 are equivalent to the simplification version of float grease seal, relative motion therebetween, also ensure the leakproofness of bearing cavity.
Claims (5)
1. a kind of vertical pulverizer of efficient damping sealing, including the plum blossom frame being placed in body（1）With equalization setting described
Pass through plum blossom frame suspension arms mechanism on plum blossom frame（2）Drive the grinding roller assembly of work（3）, the suspension arms mechanism（2）Packet
It includes and is arranged on the plum blossom frame dovetail slotted disk（4）Vertical shaft in longitudinal hole（2.1）, in the vertical shaft（2.1）On be provided with band
There is the runner assembly of shaft sealer, in the vertical shaft（2.1）Top is provided with and the grinding roller assembly（3）The gravity being connected
Support device, it is characterised in that：
The plum blossom frame（1）The bottom level of longitudinal dovetail groove has embedded yielding rubber pad（1.1）, the yielding rubber pad
（1.1）Outer side edges be in indent arcuate structure；It is set respectively in two bevel edges and rear portion bottom edge face of longitudinal dovetail groove
There is damping inclined plate（1.2）With damping back plate（1.3）, the rear portion base of the longitudinal direction dovetail groove, which extends internally, sets fluted, institute
It states and damping back plate described in top pressure is placed in groove（1.3）Expansion set（1.4）；
The runner assembly includes being sleeved on the vertical shaft（2.1）The upper bearing (metal) of lower bearing intracavitary（2.2）And lower bearing
（2.3）, in the upper bearing (metal)（2.2）And lower bearing（2.3）Between be provided with wear-resistant sleeve（2.4）, the lower bearing bottom setting
There is lower axle pressure cap（2.5）, withhold the upper bearing (metal) gland on the upper bearing (metal)（2.6）Inner hole wall along the vertical shaft（2.1）
It upwardly extends, forms the sheath being coated on outside the vertical shaft（2.7）；
The shaft sealer includes the sealing shroud for being connected in the plum blossom frame dovetail groove tray bottom（2.8）, the sealing shroud
（2.8）It extends downwardly and is coated on the sheath（2.7）Outside, the sealing shroud（2.8）Step inner wall and the sheath outer wall
Between be provided with upper and lower oil sealing in the toroidal cavity that is formed（2.9、2.10）With upper and lower sealing steel disk（2.11、2.12）, it is placed in
The upper and lower oil sealing of the toroidal cavity bottom（2.9、2.10）It is arranged at intervals and forms annular grease seal chamber（2.13）, it is opened in
The sealing shroud（2.8）Oil filler point and the annular grease seal chamber on side wall（2.13）It is connected, is revolved on the oil filler point
It is screwed with pump nozzle（2.14）, what activity was stacked together seals steel disk above and below（2.11、2.12）It is placed on the upper oil sealing
（2.9）In the cavity at top.
2. the vertical pulverizer of efficient damping sealing according to claim 1, it is characterised in that：The Gravity support device
The plum blossom frame dovetail slotted disk is placed on including button（4）On the H-shaped structure in vertical section rubber spring set（2.15）, in the rubber
Glue spring pocket（2.15）It has inside been sequentially placed rubber spring from bottom to top（2.16）, lower ball base（2.17）And upper ball base（2.18）,
The lower ball base（2.17）And upper ball base（2.18）Faying face be the spherical structure to raise up；From the grinding roller assembly（3）
The supporting rack extended on the ball seat of top（2.19）On offer through-hole, the compression silk being placed in the upper ball base top groove
Thick stick（2.20）Extend the through-hole, screw locking nut thereon（2.21）.
3. the vertical pulverizer of efficient damping sealing according to claim 1, it is characterised in that：The expansion set is by back side panel
（1.41）With the upper and lower rubber block for being fixed on the back side panel upper and lower ends（1.42、1.43）Composition, in the upper and lower rubber
Block（1.42、1.43）Between be vertically arranged with support post（1.44）.
4. the vertical pulverizer of efficient damping sealing according to claim 3, it is characterised in that：The upper and lower rubber block
（1.42、1.43）Side wall from both ends to center inside contract, form that both ends are big, intermediate small trapezium structure.
5. the vertical pulverizer of efficient damping sealing according to claim 1, it is characterised in that：The damping inclined plate
（1.2）With damping back plate（1.3）To add steel rubber slab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510950365.5A CN105435909B (en) | 2015-12-18 | 2015-12-18 | The vertical pulverizer of efficient damping sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510950365.5A CN105435909B (en) | 2015-12-18 | 2015-12-18 | The vertical pulverizer of efficient damping sealing |
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| Publication Number | Publication Date |
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| CN105435909A CN105435909A (en) | 2016-03-30 |
| CN105435909B true CN105435909B (en) | 2018-06-22 |
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| CN201510950365.5A Active CN105435909B (en) | 2015-12-18 | 2015-12-18 | The vertical pulverizer of efficient damping sealing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106311448A (en) * | 2016-11-22 | 2017-01-11 | 重庆亿豪活性炭有限责任公司 | Plum-shaped frame of active carbon Raymond mill |
| CN109433336A (en) * | 2018-10-31 | 2019-03-08 | 长沙万荣粉体设备科技有限公司 | A kind of depolymerization equipment |
| CN109139914A (en) * | 2018-10-31 | 2019-01-04 | 长沙万荣粉体设备科技有限公司 | A kind of honeycomb mill |
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| CN203648633U (en) * | 2013-12-27 | 2014-06-18 | 郑州维科重工机械有限公司 | Suspension device between grinding roller assembly and star rack of flour mill |
| CN104056690A (en) * | 2014-07-22 | 2014-09-24 | 郑州维科重工机械有限公司 | Bent arm suspending device between grinding roller assembly and plum blossom shaped frame of mill |
| CN203990777U (en) * | 2014-08-14 | 2014-12-10 | 郑州维科重工机械有限公司 | For the grinding roller assembly Gravity support device on flour mill hitch |
| CN205253237U (en) * | 2015-12-18 | 2016-05-25 | 河南维科重工机械有限公司 | Sealed vertical roller mill powder machine of high -efficient shock attenuation |
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|---|---|
| CN105435909A (en) | 2016-03-30 |
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Address after: 454350 industrial agglomeration area of Xiu Wu County, Jiaozuo, Henan Applicant after: Henan Veken Heavy Machinery Co. Address before: No. 5, ran Tun Dong Road, Zhongyuan District, Zhengzhou, Henan Province Applicant before: Henan Wei Ke heavy industry Machinery Co., Ltd. |
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Effective date of registration: 20210531 Address after: No. 169, science Avenue, high tech Industrial Development Zone, Zhengzhou City, Henan Province, 450000 Patentee after: HENAN LIMING HEAVY INDUSTRY & SCIENCE Co.,Ltd. Patentee after: SHIBANG INDUSTRIAL TECHNOLOGY GROUP Co.,Ltd. Address before: 454350 industrial agglomeration area of Xiu Wu County, Jiaozuo, Henan Patentee before: Henan Veken Heavy Machinery Co. |