CN108452883A - A kind of feeding device and crushing system - Google Patents
A kind of feeding device and crushing system Download PDFInfo
- Publication number
- CN108452883A CN108452883A CN201810531932.7A CN201810531932A CN108452883A CN 108452883 A CN108452883 A CN 108452883A CN 201810531932 A CN201810531932 A CN 201810531932A CN 108452883 A CN108452883 A CN 108452883A
- Authority
- CN
- China
- Prior art keywords
- receiving hopper
- feeding device
- bearing plate
- nut
- lead screw
- 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.)
- Withdrawn
Links
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
- 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
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/10—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone
- B02C23/12—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
- B02C4/08—Crushing or disintegrating by roller mills with two or more rollers with co-operating corrugated or toothed crushing-rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/286—Feeding devices
Abstract
The invention discloses a kind of feeding device, including lead screw, the nut being sheathed on the lead screw, the receiving hopper that can be moved left and right and the guide plate coordinated with the nut, which is equipped with for the up and down guide groove of the nut；The receiving hopper is equipped with the weighing device for weighing weight of material, the weighing device includes elastic component, bearing plate, the cylinder connected with the nut and the contact switch on the bearing plate set on the receiving hopper bottom, described elastic component one end and the receiving hopper bottom are affixed, and the other end and the bearing plate are affixed；The present invention can automatic weighing, weighing accuracy is high, it is not easy to be interfered by the external world, and service life is long, maintenance cost is low, and high degree of automation of the present invention, is manually operated without worker, and work efficiency is high, mitigation worker's work load.
Description
Technical field
The invention belongs to machinery fields, more particularly, to a kind of feeding device and breaker.
Background technology
Feeding device refers to the machine for conveying material, the either all indispensable transmission of light industry or heavy industry
Equipment, but feeding device the degree of automation now on the market is not high, is unable to automatic weighing, worker is needed to operate manually,
Working efficiency is influenced, worker's work load is increased.
Invention content
The present invention for overcome the deficiencies in the prior art, provide it is a kind of can high degree of automation, can automatic weighing and maintenance
Feeding device at low cost.
To achieve the goals above, the present invention uses following technical scheme：A kind of feeding device, including lead screw, be sheathed on
Nut, the receiving hopper that can be moved left and right on the lead screw and the guide plate coordinated with the nut, which is equipped with can
For the guide groove that the nut is up and down；The receiving hopper is equipped with the weighing device for weighing weight of material, described to weigh
Device includes elastic component, the bearing plate set on the receiving hopper bottom, the cylinder connected with the nut and is set to the undertaking
Contact switch on plate, described elastic component one end and the receiving hopper bottom are affixed, and the other end and the bearing plate are affixed；Pass through
The setting of meausring apparatus realizes the automatic weighing purpose of feeding device, feeding device is enable to be transported automatically after automatic weighing
Defeated material work, high degree of automation；Make receiving hopper that can not touch electric shock in internal empty material by the setting of elastic component
Switch, the compression elastic piece when material in receiving hopper reaches setting value makes receiving hopper touch contact spring, defeated to realize
Expect the automation mechanized operation of device；The ideas equipment such as infrared ray are replaced using contact switch, increase service life of equipment, plant maintenance
It is at low cost, high financial profit；And feeding device is controlled by controller, is operated in person without personnel, and worker's burden is mitigated, and is improved
Working efficiency.
Preferably, being equipped with support plate below the bearing plate, the bearing plate bottom is equipped with to match with the support plate
The slide assemblies of conjunction, the cylinder are fixedly connected with the bearing plate；Receiving hopper is set on bearing plate, support plate to receiving hopper and
Bearing plate plays a supportive role, and receiving hopper moves left and right effect by the slide assemblies realization receiving hopper between bearing plate and support plate
Fruit provides power to bearing plate by cylinder, keeps feeding device more convenient to use.
Preferably, the slide assemblies include set on the guide wheel of the bearing plate bottom and in the support plate
Guide rail corresponding with the guide wheel；Position-limiting action is done to the guide wheel on bearing plate by the guide rail in support plate, enables guide wheel
It is preferably moved on guide rail, the damage that support plate causes equipment is fallen when preventing guide wheel from driving receiving hopper movement.
Preferably, the receiving hopper bottom is equipped with automatic discharge unit；When feeding device is by material transportation to destination
When, by the automatic discharge unit of receiving hopper bottom, the discharge of materials in receiving hopper to purpose is located in, without manually by object
Material is moved out out of receiving hopper, high degree of automation, mitigates worker's work load, improves working efficiency.
Preferably, the automatic discharge unit includes set on the dodge gate of the receiving hopper bottom surface and set on the undertaking
Reset cylinder on plate；When receiving hopper arrives at, dodge gate automatically opens, and allows material in receiving hopper from activity
It is fallen at door, after material comes down in torrents, reset cylinder is started to work, and reset cylinder pushes the dodge gate opened, and makes dodge gate
It completes to reset.
Preferably, described dodge gate one end is movably connected on the receiving hopper bottom surface, the other end by an electromagnet with
The receiving hopper bottom surface matches；Dodge gate can be rotated around hinge joint, and when receiving hopper arrives at, electromagnet is disconnected
Electricity makes dodge gate one end lose cooperation with receiving hopper bottom surface, to play the purpose for opening dodge gate；It is finished when material comes down in torrents
Afterwards, reset cylinder pushes the dodge gate opened, electromagnet to be once again powered up, when reset cylinder pushes dodge gate to rise to a certain extent
When, dodge gate can be completed under the magneticaction of electromagnet and the cooperation of receiving hopper bottom surface, achievees the effect that closing.
Preferably, being respectively equipped with through-hole corresponding with the dodge gate in the bearing plate and the support plate；When
After dodge gate on receiving hopper is opened, material can reach the destination of conveying by being fallen from through-hole at open dodge gate.
Preferably, the lead screw bottom end is equipped with lead screw motor, the screw mandrel top is equipped with limited block；Lead screw motor and silk
Bar transmission cooperation, lead screw motor drive lead screw rotation, to enable the nut being sheathed on lead screw to move up and down, limited block
The vertex position that nut moves upwards is limited, prevents nut from moving to outside lead screw, causes the damage of equipment.
The invention also discloses a kind of crushing system, including support portion, set on the support portion upper end cabinet, be set to institute
The actuator, the breaker in the cabinet and the discharge nozzle on the cabinet of cabinet side are stated, it is described broken
Device further includes the feeding device as described in claim 1-8 corresponding with the discharge nozzle；Crushing system can be to that need to break
Broken material carries out broken work, makes crushing efficiency higher with feeding device cooperation, can be by big of the completion that is not broken once
Grain transports in crushing system again, is allowed to carry out second-time breakage, improves crushing effect.
Preferably, the discharge nozzle is equipped with solenoid valve；Solenoid valve is opened when receiving hopper is in discharge nozzle lower end, is made not
The bulky grain being broken is fallen in receiving hopper, and when receiving hopper transported material, solenoid valve is closed, and prevents large granular materials from continuing
It is discharged from discharge nozzle, causes the inconvenience of cleaning.
The present invention has the following advantages：Can automatic weighing, weighing accuracy is high, it is not easy to be interfered, and use by the external world
Long lifespan, maintenance cost is low, and high degree of automation of the present invention, is manually operated without worker, and work efficiency is high, mitigates worker's work
It bears.
Description of the drawings
Fig. 1 is the structural schematic diagram of feeding device of the present invention.
Fig. 2 is feeding device of the present invention and the matched structural schematic diagram of crushing system.
Fig. 3 is the structural schematic diagram of left slider of the present invention.
Fig. 4 is the structural schematic diagram of present invention right side sliding block.
Fig. 5 is the upward view of cabinet of the present invention.
Fig. 6 is the structural schematic diagram of limiting device of the present invention.
Fig. 7 is the structural schematic diagram of handrail of the present invention.
Specific implementation mode
In order to make those skilled in the art be better understood from the present invention program, below in conjunction in the embodiment of the present invention
Attached drawing, technical solution in the embodiment of the present invention carry out clear, complete description, it is clear that described embodiment is only
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The every other embodiment that member is obtained without making creative work should all belong to the model that the present invention protects
It encloses.
As shown in figures 2-6, a kind of crushing system, including support portion 2, set on 2 upper end of the support portion cabinet 1, be set to
The actuator 3 of 1 side of the cabinet and the breaker 4 in the cabinet 1, the actuator 3 are commonly to purchase on the market
Available motor, the breaker 4 be breaker roll, the breaker 4 can be arranged it is multiple, to improve crushing efficiency；Branch
It is provided when support part 2 works to cabinet 1 and stablizes support force, prevent cabinet 1 from equipment shakiness being caused to influence work at work；The drive
The output shaft of moving part 3 is connected with the breaker 4, drives breaker 4 to carry out broken work by actuator 3；It is described
4 lower section of breaker is equipped with filtration members 51, and filtration members 51 are used for screening broken material, and bulky grain is deposited in filtration members 51
On, so that little particle is passed through filtration members 51 and falls to chassis bottom；1 left end bottom of the cabinet is equipped with discharge port 13, right end bottom
Equipped with discharge nozzle 12,12 exit of discharge nozzle is equipped with solenoid valve 121, and solenoid valve 121 controls the opening and closing of discharge nozzle 12, discharge port 13
Place goes out the little particle after being crushed, and the bulky grain not being broken is gone out at discharge nozzle 12, and 1 bottom of cabinet is arranged for inclined-plane, can help
It helps the little particle fallen in 1 bottom of cabinet to be tumbled along 1 bottom bevel of cabinet, preferably helps little particle from discharge port 13
Place's discharge, 1 top of cabinet are equipped with feed inlet 11, are put into breaker from feed inlet 1 convenient for feed and are crushed, the filtering
Part 51 is that rope makes soft strainer, and 1 bottom of the cabinet is equipped with sliding slot 16, sliding block, the filtering are sliding combined in the sliding slot 16
Part 51 is by hanging on the sliding block；1 side of the cabinet is additionally provided with feeding device；By the setting of feeding device, make
The complete bulky grain that is not broken at the beginning, which comes back to, carries out second-time breakage in cabinet 1, improve broken quality, make material
The little particle of needs can be broken into.
As shown in Figure 1, a kind of feeding device, including lead screw 61, set on 61 bottom of the lead screw lead screw motor 62 and set
In the nut 63 on the lead screw 61,61 top of the lead screw is equipped with limited block 68, and limited block 68 passes through screw thread and 61 phase of lead screw
Even, limited block 68 plays position-limiting action to nut 63, and lead screw motor 62 coordinates with screw rod transmission；61 right side of the lead screw is additionally provided with one
Guide plate 69, the guide plate 69 are equipped with guide groove, and the right side of nut 63 has been connected through a screw thread guide pad 631, guide pad 631 with
Guide groove is slidably matched；The affixed cylinder 64 in 63 side of the nut, 64 one end of the cylinder are equipped with the receiving hopper that can be moved left and right
65,64 one end of cylinder, which is threadably secured, to be connected on receiving hopper 65, and 64 lower section of the cylinder is equipped with support plate 67, the support
Plate 67 is fixed on the nut 63, and 65 lower section of the receiving hopper is equipped with bearing plate 66, and the receiving hopper 65 passes through elastic component 653
It is connected with the bearing plate 66, the elastic component 653 is preferably spring, and bearing plate 66 is equipped with contact switch 663, support plate 67
Positioned at 66 lower section of bearing plate, 66 bottom of the bearing plate is equipped with pulley 661, and 67 upper surface of the support plate is equipped with and the pulley
661 corresponding sliding rails；The receiving hopper 65 is equipped with automatic discharge unit, and the automatic discharge unit includes being set to described connect
The dodge gate 651 of 65 bottom surface of hopper and the reset cylinder 662 on the bearing plate 66,651 right end of the dodge gate with connect
65 bottom of hopper is hinged, and left end is connect with receiving hopper 65 by electromagnet 652, is equipped in the bearing plate 66 and support plate 67
Through-hole, the through-hole are set to immediately below dodge gate 651；The bearing plate 66, solenoid valve 121, cylinder 64, is answered at contact switch 663
Position cylinder 662, electromagnet 652 and lead screw motor 62 are connected with a PLC controller, and receiving hopper 65 is set to 12 lower section of discharge nozzle；
Material carries out after being crushed, and the bulky grain not being completely broken is discharged from discharge nozzle 12, falls in receiving hopper 65, with splicing
Material in bucket 65 increases the increase of 65 mass of receiving hopper, to which compressed spring 653 connects when spring 653 is compressed to setting value
Hopper 65 touches contact switch 663, and signal is fed back to PLC controller, and under the control of PLC controller, solenoid valve 121 closes
It closes, bulky grain is made to be discharged no longer from discharge nozzle 12, material is avoided to be directly discharged to that the inconvenience of cleaning, cylinder 64 is caused to open on the ground
Begin to shrink, receiving hopper 65 is driven to be moved to far from 1 side of cabinet, when cylinder 64 is retracted to limit value, lead screw motor 62 starts work
Make, driving lead screw 61 rotates, and to make nut 63 be moved upwards along guide plate 69 along lead screw, while driving 65 net of receiving hopper
Upper movement, until nut 63 moves at limited block 68,62 stop motion of lead screw motor, cylinder 64 is to the progress of receiving hopper 65 at this time
It pushes, receiving hopper 65 is made to be moved to close to 1 side of cabinet, make 651 face bearing plate 66 of dodge gate and the support of 65 bottom of receiving hopper
Through-hole on plate 67,64 stop motion of cylinder, the power-off of electromagnet 652 make dodge gate 651 open, and the material in receiving hopper 65 passes through
It is fallen in the feed inlet 11 at the top of cabinet 1 by through-hole at dodge gate 651, the bulky grain for the completion that makes not to be broken enters cabinet
Second-time breakage is carried out in 1, after material has tilted spring 653 under the effect of elasticity can bullet, PLC controller keeps electromagnet 652 extensive
It is multiple to be powered, it is that electromagnet 652 restores magnetic force, reset cylinder 662 starts to travel forward, and pushes dodge gate 651 around hinged click-through
Row movement, when 651 left end of dodge gate moves to certain altitude since magneticaction dodge gate 651 is adsorbed up, to close
Dodge gate 651 is closed, then feeding device resets under the control of PLC controller.
Feeding device can be also operated manually by PLC controller.
The sliding slot 16 is four, and the sliding slot 16 is symmetrically set in 1 bottom surface of the cabinet, and the sliding block is four, described
51 4 end of filtration members is separately fixed on four sliding blocks, and four sliding slots, 16 center is equipped with an opening 14, the opening
14 are connected with four sliding slots 16；By four 16 symmetrical settings of sliding rail, it is unfolded conducive to by filtration members 51, makes filtration members
51 can be laid in 4 bottom surface of breaker, play better screening effect, when being replaced to filtration members 51, along sliding slot 16
Sliding block is skidded off into sliding slot 16, goes out to take out sliding block from the opening 14 at 16 center of sliding slot, to the filtration members 51 being connected on sliding block
It is replaced, after the completion of on the outside replacing filtration members 51, then sliding block is sequentially placed into corresponding sliding slot 16 from opening 14, it will
Sliding block slides into 16 bottom of sliding slot, completes the replacement of filtration members 51.
The sliding block includes two left sliders 52 and two right side sliding blocks 53, and one is fixedly connected on the left slider 52
Connecting rod 522, the connecting rod 522 are equipped with the first coupler body, and the right side sliding block 53 is equipped with the second coupler body, first hook
Body includes the first coupler body ontology 523, the first hook portion 524 and the second hook portion 525, and second coupler body includes the second coupler body ontology
532, third hook portion 533 and the 4th hook portion 534；51 4 endpoints of filtration members are fixed on connection by the first coupler body and the second coupler body
On 522 right side sliding blocks 53 of bar, pass through setting for the first hook portion 524, the second hook portion 525, third hook portion 533 and the 4th hook portion 534
Set, be connected to filtration members 51 are stronger in connecting rod 522 and right side sliding block 53, prevent filtration members 51 in screening operation by
Falling for filtration members 51 is caused in the impact of material；Connecting rod 522 is set by 52 upper end of left slider, filtration members 51 are formed
One inclined-plane, enables the bulky grain rested in filtration members 51 to be tumbled along inclined-plane, and then by bulky grain from discharge nozzle 12
Go out discharge, left slider 52 and 53 upper end of right side sliding block are respectively equipped with the first limited block 521 and the second limited block 531. is logical
The sliding block preferably movement in sliding slot 16 can be made by crossing limited block, and can prevent broken dust from falling to a certain extent
Shoe edge causes the inconvenience that sliding block moves.
16 end of the sliding slot is equipped with folding groove portion 161, and the folding groove portion 161 is equipped with sliding block limiting device, the limit dress
Two symmetrically arranged pushing block components 1611 are set to, the pushing block component 1611 includes set on the pushing block bottom of 16 inner wall of the sliding slot
Seat 16111, one end are set to the pushing block 16112 in the pushing block pedestal 16111 and the limit spring on the pushing block 16112
16113；16112 top of the pushing block is globoidal structure, is equipped with cavity in pedestal 16111, pushing block 16112 can be along cavity inner wall
It slides up and down, when sliding block slides into 16 bottom of sliding slot, in order to preferably fix sliding block, sliding block is slid into 16 end of sliding slot
It rolls in groove portion 161, sliding block is pushed into the limiting slot 1612 of two 1611 other sides of pushing block component, when sliding block and pushing block 16112
When contact, pushing block 16112 is pressed into the cavity bottom of pushing block pedestal 16111 by sliding block 16112 along the curved surfaces of pushing block 16112
Portion makes sliding block enter in limiting slot 1612, and pushing block 16112 resets under the elastic force effect of limit spring 16113, plays limit and makees
With.
1 inner left wall of the cabinet is equipped with handrail 15, and described handrail one end is fixed in 15 inner left wall of the cabinet,
The handrail other end is equipped with back hook portion；After filtration members 51 complete installation, in order to increase the intensity of connecting rod 522, make back hook
Portion catches on connecting rod 522, avoids connecting rod 522 stress is excessive at work to cause to fracture, extend service life of equipment；Cabinet 1
Bottom is clamped a bottom cover 17, and bottom cover 17 goes out the small particles material and dust fallen for storing from opening 14 and sliding slot 16, prevents
Small particles material and dust directly fall the inconvenience for causing cleaning on the ground.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of feeding device, including lead screw, the nut being sheathed on the lead screw, the receiving hopper that can move left and right and with it is described
The guide plate of nut cooperation, the guide plate are equipped with for the up and down guide groove of the nut；The receiving hopper, which is equipped with, to be used
In the weighing device for weighing weight of material, it is characterised in that：The weighing device includes elastic component, is set to the receiving hopper bottom
Bearing plate, with the nut be connected cylinder and the contact switch on the bearing plate, described elastic component one end and institute
It is affixed to state receiving hopper bottom, the other end and the bearing plate are affixed.
2. a kind of feeding device described in accordance with the claim 1, it is characterised in that：Support plate, institute are equipped with below the bearing plate
State bearing plate bottom be equipped with the matched slide assemblies of the support plate, the cylinder is fixedly connected with the bearing plate.
3. a kind of feeding device according to claim 2, it is characterised in that：The slide assemblies include being set to the undertaking
The guide wheel in board bottom portion and the guide rail corresponding with the guide wheel in the support plate.
4. a kind of feeding device described in accordance with the claim 1, it is characterised in that：The receiving hopper bottom is filled equipped with automatic discharging
It sets.
5. a kind of feeding device according to claim 4, it is characterised in that：The automatic discharge unit includes set on described
The dodge gate of receiving hopper bottom surface and the reset cylinder on the bearing plate.
6. a kind of feeding device according to claim 5, it is characterised in that：Described dodge gate one end is movably connected on described
Receiving hopper bottom surface, the other end are matched by an electromagnet with the receiving hopper bottom surface.
7. a kind of feeding device according to claim 5, it is characterised in that：On the bearing plate and the support plate respectively
Equipped with through-hole corresponding with the dodge gate.
8. a kind of feeding device described in accordance with the claim 1, it is characterised in that：The lead screw bottom end is equipped with lead screw motor, institute
It states screw mandrel top and is equipped with limited block.
9. a kind of crushing system, including support portion（2）, be set to the support portion（2）The cabinet of upper end（1）, be set to the cabinet
（1）The actuator of side（3）, be set to the cabinet（1）Interior breaker（4）And the discharge nozzle on the cabinet,
It is characterized in that：The breaker further includes the feeding device as described in claim 1-8 corresponding with the discharge nozzle.
10. a kind of crushing system according to claim 9, it is characterised in that：The discharge nozzle is equipped with solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810531932.7A CN108452883A (en) | 2018-05-29 | 2018-05-29 | A kind of feeding device and crushing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810531932.7A CN108452883A (en) | 2018-05-29 | 2018-05-29 | A kind of feeding device and crushing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108452883A true CN108452883A (en) | 2018-08-28 |
Family
ID=63215903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810531932.7A Withdrawn CN108452883A (en) | 2018-05-29 | 2018-05-29 | A kind of feeding device and crushing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108452883A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110124840A (en) * | 2019-06-24 | 2019-08-16 | 广州百士臣科技有限公司 | A kind of high dust-protection type flour mill of quality of production for ore dressing |
| CN112092188A (en) * | 2020-09-01 | 2020-12-18 | 李收 | Novel civil construction mortar stirring device |
-
2018
- 2018-05-29 CN CN201810531932.7A patent/CN108452883A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110124840A (en) * | 2019-06-24 | 2019-08-16 | 广州百士臣科技有限公司 | A kind of high dust-protection type flour mill of quality of production for ore dressing |
| CN112092188A (en) * | 2020-09-01 | 2020-12-18 | 李收 | Novel civil construction mortar stirring device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180828 |