CN207493743U - A kind of stone pulverizing device with precrushing mechanism - Google Patents
A kind of stone pulverizing device with precrushing mechanism Download PDFInfo
- Publication number
- CN207493743U CN207493743U CN201721122902.8U CN201721122902U CN207493743U CN 207493743 U CN207493743 U CN 207493743U CN 201721122902 U CN201721122902 U CN 201721122902U CN 207493743 U CN207493743 U CN 207493743U
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- plate
- precrushing
- crush box
- steel
- damper
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- Crushing And Pulverization Processes (AREA)
Abstract
The utility model discloses a kind of stone pulverizing device with precrushing mechanism, including pedestal, crush box, damper and precrushing case.By setting precrushing mechanism in the utility model, it can be gradually broken into fritter building stones during oversize rock material falls, so as to reduce resistance during pulverization roller operation, prevent load that is stuck, while reducing motor, extend the service life of motor；By setting steel sieve plate, the building stones after crushing can be screened, it is convenient that classification processing is carried out to the building stones after crushing；Steel sieve plate is rotatably arranged in crush box simultaneously, coordinates electromagnetic block and support plate that can be easily collected to the rubble after crushing and microlith, and collects process simple operation；Damper is additionally provided with, vibration during single unit system operation can be reduced, and damper has cushioning ability made of steel plate and ball, also with certain rigidity, to be grown much compared with damper service life made of general spring.
Description
Technical field
The utility model is related to a kind of reducing mechanism, specifically a kind of stone pulverizing device with precrushing mechanism.
Background technology
Stone pulverizing device suitable for it is soft or hard and extremely hard material broken, shaping, be widely used in various ores, water
Mud, refractory material, bauxite clinker, diamond dust, glass raw material, mechanism building sand, building stones and various metallurgical slags are especially right
Silicon carbide, diamond dust, sintered bauxite, the contour hard, ultrahard of U.S. sand and the other types of crusher yield of resistance to abrasion material ratio
It is more effective.
Existing stone pulverizing device is directly to be delivered building stones mostly when being crushed to building stones, more in this way
The building stones of bulk are directly in contact with disintegrating mechanism, be easy to cause the stuck of disintegrating mechanism, while increase the load of motor, contracting
The short service life of motor.
Utility model content
The purpose of this utility model is to provide a kind of stone pulverizing device with precrushing mechanism, to solve the above-mentioned back of the body
The problem of being proposed in scape technology.
To achieve the above object, the utility model provides following technical solution：
A kind of stone pulverizing device with precrushing mechanism, including pedestal, crush box, damper and precrushing case；Institute
The top that crush box is arranged on pedestal is stated, crush box is connected by damper with pedestal；The precrushing case is fixed on crush box
Top, the vertical section of precrushing case is in gate and tips upside down on crush box, and feeding mouth, pan feeding are offered at the top of precrushing case
Mouth connects material bin, and precrushing mechanism is provided in precrushing case, and the precrushing mechanism includes quiet Jaw plate, dynamic Jaw plate and driving
Disk, quiet Jaw plate are fixed on the top of crush box, and the lower end of moving jaw plate is hingedly set to the fixed plate at the top of crush box, quiet Jaw plate and
Gap between fixed plate bottom constitutes dropping channel, is provided with drive disk on rear side of moving jaw plate, on the front end face of drive disk
Eccentric setting has pillar, and the rear end face of moving jaw plate offers the sliding slot to match with pillar along its length, and pillar is slidably connected
Sliding slot, the rear end face center connection transmission shaft of drive disk, transmission shaft is through precrushing case and passes through bearing and precrushing case
Rotation connection, transmission shaft are located at the axis body end face connection driven pulley outside broken case, and driven pulley is connected actively by belt
Belt wheel, driving pulley are fixed on the output shaft of precrushing motor, and precrushing motor is mounted on the top of crush box；The crushing
The material perforation being connected with dropping channel, material perforation connection diversion pipe, the lower section of diversion pipe or so are offered at the top of case
Both sides are symmetrically arranged with the first pulverization roller and the second pulverization roller, intensive setting on the outer roll surface of the first pulverization roller and the second pulverization roller
There is crushing tooth, steel sieve plate is provided with below the second pulverization roller of the first pulverization roller, the bottom of steel sieve plate is equipped with exciting
Device, the right end of steel sieve plate are rotatablely connected the inner cavity right side wall of crush box, and electromagnetic block, steel sieve are provided on the left of steel sieve plate
Support plate is provided with below the left side of plate, support plate is fixed on the inner cavity left side wall of crush box, and the upper surface of support plate is left low
Right high inclined surface, the position that the left plate of crush box corresponds to support plate offer rubble outlet, under rubble outlet connection rubble
Expects pipe, the right plate bottom of crush box offer microlith outlet, microlith outlet connection microlith discharge nozzle, the inner chamber bottom surface of crush box
Inclined-plane for right low left high.
As further program of the utility model：There are four the bottom four corners for being respectively distributed to pedestal for the damper
Place.
As further program of the utility model：The damper includes steel plate, big ball and small rubber ball, steel plate
There are four block gaps to be stacked together, the steel plate positioned at upper and lower both sides is connect respectively with crush box and pedestal, the gap of adjacent steel plate
In be provided with multiple big balls and small rubber ball, multiple first caulking grooves and second are symmetrically offered on the opposite face of adjacent steel plate
Caulking groove, the first caulking groove and the second caulking groove are interspersed, and big ball is inlaid in the first caulking groove, and it is embedding that small rubber ball is inlaid in second
In slot.
As further program of the utility model：The pillar is integrally formed with drive disk.
As further program of the utility model：First pulverization roller and the second pulverization roller are driven by external motor
It is dynamic.
As further program of the utility model：The vibrator is high-frequency vibration exciter.
As further program of the utility model：It is equipped on the front side wall of the crush box and steel sieve plate is answered
The operation door of bit manipulation.
Compared with prior art, the beneficial effects of the utility model are：
By setting precrushing mechanism in the utility model, it can gradually be crushed during oversize rock material falls
Into fritter building stones, so as to reduce resistance during pulverization roller operation, load that is stuck, while reducing motor is prevented, extends electricity
The service life of machine；By setting steel sieve plate, the building stones after crushing can be screened, it is convenient to the building stones after crushing into
Row classification is handled；Steel sieve plate is rotatably arranged in crush box, coordinate electromagnetic block and support plate can easily to crushing after
Rubble and microlith be collected, and collect process simple operation；Damper is additionally provided with, when can reduce single unit system operation
Vibration, and made of steel plate and ball damper i.e. have cushioning ability, also with certain rigidity, compared with general spring
Manufactured damper service life will be grown very much.
Description of the drawings
Fig. 1 is the structure diagram of the stone pulverizing device with precrushing mechanism.
Fig. 2 be the stone pulverizing device A with precrushing mechanism to structure diagram.
Fig. 3 is the structure diagram of the stone pulverizing device damper with precrushing mechanism.
In figure：1- pedestals, 2- crush boxes, the perforation of 21- materials, the outlet of 211- diversion pipes, 22- rubbles, 221- rubble blankings
Pipe, the outlet of 23- microliths, 231- microliths discharge nozzle, 24- fixed plates, 3- dampers, 31- steel plates, the first caulking grooves of 311-, the big rubbers of 32-
Glueballs, the second caulking grooves of 312-, 33- small rubbers ball, 4- precrushings mechanism, the quiet Jaw plates of 41-, 42- move Jaw plate, 421- sliding slots, 43- and drive
Moving plate, 431- pillars, 44- driven pulleys, 441- transmission shafts, 45- driving pulleys, 46- precrushings motor, 47- dropping channels,
The first pulverization rollers of 51-, the second pulverization rollers of 52-, 6- steels sieve plate, 61- electromagnetic blocks, 62- vibrators, 63- support plates, 7- precrushings
Case, 71- feeding mouths, 711- material bins.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained shall fall within the protection scope of the present invention.
Please refer to Fig.1~3, in the utility model embodiment, a kind of stone pulverizing device with precrushing mechanism, including
Pedestal 1, crush box 2, damper 3 and precrushing case 7；The crush box 2 is arranged on the top of pedestal 1, and crush box 2 passes through damping
Device 3 and pedestal 1 connect, and further, there are four dampers 3 is respectively distributed at the bottom four corners of pedestal 1, the damper 3
Including steel plate 31, big ball 32 and small rubber ball 33, steel plate 31 has four block gaps to be stacked together, the steel positioned at upper and lower both sides
Plate 31 is connect respectively with crush box 2 and pedestal 1, and multiple big balls 32 and small rubber ball are provided in the gap of adjacent steel plate 31
33, in this way compared under underload, by big ball 32 come pressure-bearing, under heavier load, it is total to by big ball 32 and small rubber ball 33
Same pressure-bearing can meet the classification damping under different loads, further, symmetrically be offered on the opposite face of adjacent steel plate 31 multiple
First caulking groove 311 and the second caulking groove 312, the first caulking groove 311 and the second caulking groove 312 are interspersed, and big ball 32 is inlaid in
In one caulking groove 311, small rubber ball 33 is inlaid in the second caulking groove 312, and the damper 3 supported by steel plate 31 and ball has
Cushioning ability, while also there is certain rigidity, it to grow much compared with damper service life made of general spring；
The precrushing case 7 is fixed on the top of crush box 2, and the vertical section of precrushing case 7 in gate and tips upside down on crushing
On case 2, the top of precrushing case 7 offers feeding mouth 71, and feeding mouth 71 connects material bin 711, is provided in precrushing case 7 pre-
Crushing mechanism 4, the precrushing mechanism 4 include quiet Jaw plate 41, dynamic Jaw plate 42 and drive disk 43, quiet Jaw plate 41 and are fixed on crush box
2 top, the lower end of moving jaw plate 42 are hingedly set to the fixed plate 24 at 2 top of crush box, 24 bottom of quiet Jaw plate 41 and fixed plate
Between gap constitute dropping channel 47, the rear side of moving jaw plate 42 is provided with drive disk 43, on the front end face of drive disk 43 partially
The heart is provided with pillar 431, and further, pillar 431 is integrally formed with drive disk 43, and the rear end face of moving jaw plate 42 is along its length
Offer the sliding slot 421 to match with pillar 431, pillar 431 is slidably connected sliding slot 421, when drive disk 43 rotates, will pass through
Pillar 431 drives moving jaw plate 42 using the hinge joint of lower end as branch spot wobble, and pre- break is added to from material bin 711 by the building stones of bulk
In broken case 7, the building stones of bulk are gradually crushed due to gravity whereabouts under the mating reaction of moving jaw plate 42 and quiet Jaw plate 41
The building stones of fritter are eventually become, consequently facilitating subsequent crushing, the rear end face center connection transmission shaft 441 of drive disk 43,
Transmission shaft 441 runs through precrushing case 7 and passes through bearing to be rotatablely connected with precrushing case 7, and transmission shaft 441 is located at outside precrushing case 7
The axis body end face connection driven pulley 44 in portion, driven pulley 44 connect driving pulley 45 by belt, and driving pulley 45 is fixed on
On the output shaft of precrushing motor 46, precrushing motor 46 is mounted on the top of crush box 2；
The top of the crush box 2 offers the material perforation 21 being connected with dropping channel 47,21 connection of material perforation
Diversion pipe 211, the lower section left and right sides of diversion pipe 211 are symmetrically arranged with the first pulverization roller 51 and the second pulverization roller 52, the first powder
It is intensive on the outer roll surface of broken 51 and second pulverization roller 52 of roller to be provided with crushing tooth, further, the first pulverization roller 51 and the second powder
Broken roller 52 is driven by external motor, and the lower section of the second pulverization roller 52 of the first pulverization roller 51 is provided with steel sieve plate 6, steel sieve
The bottom of plate 6 is equipped with vibrator 62, can advance and screen to the building stones after crushing, further, vibrator 62 swashs for high frequency
Shake device, and the inner cavity right side wall of the right end rotation connection crush box 2 of steel sieve plate 6, the left side of steel sieve plate 6 is provided with electromagnetic block
61, during screening, the left end of steel sieve plate 6 is fixed by electromagnet 61, support plate is provided with below the left side of steel sieve plate 6
63, support plate 63 is fixed on the inner cavity left side wall of crush box 2, and the upper surface of support plate 63 is inclined surface with left lower than right, is crushed
The position that the left plate of case 2 corresponds to support plate 63 offers rubble outlet 22,22 connection rubble tremie pipe 221 of rubble outlet, sieve
After the completion of choosing, control electromagnetic block 61 powers off, and steel sieve plate 6 is since hinge joint of the gravity around right side rotates down, then
The left end of steel sieve plate 6 is supported by support plate 63, steel sieve plate 6 is inclined at this time, and steel is remained in by screening
Rubble on sieve plate 6 processed is answered along steel sieve plate 6 after 22 landing of rubble outlet, rubble collection completion, then by steel sieve plate 6
Position further, is equipped with the operation door for steel sieve plate 6 reset operation on the front side wall of crush box 2（Do not show in figure
Go out）, the right plate bottom of crush box 2 offers microlith outlet 23,23 connection microlith discharge nozzles 231 of microlith outlet, crush box 2
Inner chamber bottom surface is the inclined-plane of right low left high, and the inner chamber bottom surface from the microlith that steel sieve plate 6 is fallen along crush box 2 is exported from microlith
23 slide, and so far just complete the separate collection to rubble and microlith, simple operation facilitates subsequent processing.
The operation principle of the utility model is：
During work, it will be added in precrushing case 7 from material bin 711 by the building stones of bulk, the building stones of bulk are due to gravity
Effect is fallen, and the building stones for eventually becoming fritter are gradually crushed under the mating reaction of moving jaw plate 42 and quiet Jaw plate 41, fritter
Building stones 21 are fallen in diversion pipe 211 via dropping channel 47 and material perforation, are then transferred to the first pulverization roller 51 and the
Between two pulverization rollers 52, it is used cooperatively by the first pulverization roller 51 and the second pulverization roller 52 and the building stones of fritter is crushed, due to
Precrushing processing is have passed through, resistance during crushing is small, effectively prevents the stuck of the first pulverization roller 51 and the second pulverization roller 52, subtracts
The small load of motor；Building stones after crushing are fallen on steel sieve plate 6, steel sieve plate 6 are driven to vibrate by vibrator 62, so as to
Building stones after crushing are screened, wherein microlith is fallen to from steel sieve plate 6 on the inner cavity ground of crush box 2, Ran Houcong
Microlith outlet 23 slides, and after screening terminates, rubble is remained on steel sieve plate 6, and control electromagnetic block 61 powers off, steel sieve plate 6
Since hinge joint of the gravity around right side rotates down, then the left end of steel sieve plate 6 is supported by support plate 63,
Steel sieve plate 6 is inclined at this time, goes out by the rubble that screening is remained on steel sieve plate 6 along steel sieve plate 6 from rubble
Mouthfuls 22 slide, rubble is collected complete after, then steel sieve plate 6 resetted, so far just completes the separated receipts to rubble and microlith
Collection, simple operation facilitate subsequent processing.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned exemplary embodiment, and
And in the case of the spirit or essential attributes without departing substantially from the utility model, it can realize that this practicality is new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this practicality is new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that by containing in the equivalent requirements of the claims is fallen
All changes in justice and range are embraced therein.Any reference numeral in claim should not be considered as limitation
Involved claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in each embodiment can also be properly combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (7)
1. a kind of stone pulverizing device with precrushing mechanism, including pedestal（1）, crush box（2）, damper（3）It is broken with pre-
Broken case（7）；It is characterized in that, the crush box（2）It is arranged on pedestal（1）Top, crush box（2）Pass through damper（3）With
Pedestal（1）Connection；The precrushing case（7）It is fixed on crush box（2）Top, precrushing case（7）Vertical section in gate and
Tip upside down on crush box（2）On, precrushing case（7）Top offer feeding mouth（71）, feeding mouth（71）Connect material bin
（711）, precrushing case（7）Inside it is provided with precrushing mechanism（4）, the precrushing mechanism（4）Including quiet Jaw plate（41）, dynamic Jaw plate
（42）And drive disk（43）, quiet Jaw plate（41）It is fixed on crush box（2）Top, moving jaw plate（42）Lower end be hingedly set to powder
Broken case（2）The fixed plate at top（24）, quiet Jaw plate（41）And fixed plate（24）Gap between bottom constitutes dropping channel
（47）, moving jaw plate（42）Rear side be provided with drive disk（43）, drive disk（43）Front end face on eccentric setting have pillar
（431）, moving jaw plate（42）Rear end face offer along its length and pillar（431）The sliding slot to match（421）, pillar
（431）Be slidably connected sliding slot（421）, drive disk（43）Rear end face center connection transmission shaft（441）, transmission shaft（441）
Through precrushing case（7）And pass through bearing and precrushing case（7）Rotation connection, transmission shaft（441）Positioned at precrushing case（7）It is external
Axis body end face connection driven pulley（44）, driven pulley（44）Driving pulley is connected by belt（45）, driving pulley（45）
It is fixed on precrushing motor（46）Output shaft on, precrushing motor（46）Mounted on crush box（2）Top；The crush box
（2）Top offer and dropping channel（47）The material perforation being connected（21）, material perforation（21）Connect diversion pipe
（211）, diversion pipe（211）Lower section at left and right sides of be symmetrically arranged with the first pulverization roller（51）With the second pulverization roller（52）, first
Pulverization roller（51）With the second pulverization roller（52）Outer roll surface on intensive be provided with crushing tooth, the first pulverization roller（51）Second crush
Roller（52）Lower section be provided with steel sieve plate（6）, steel sieve plate（6）Bottom vibrator is installed（62）, steel sieve plate（6）'s
Right end is rotatablely connected crush box（2）Inner cavity right side wall, steel sieve plate（6）Left side be provided with electromagnetic block（61）, steel sieve plate
（6）Left side below be provided with support plate（63）, support plate（63）It is fixed on crush box（2）Inner cavity left side wall, support plate
（63）Upper surface for inclined surface with left lower than right, crush box（2）Left plate correspond to support plate（63）Position offer slightly
Stone exports（22）, rubble outlet（22）Connect rubble tremie pipe（221）, crush box（2）Right plate bottom offer microlith and go out
Mouthful（23）, microlith outlet（23）Connect microlith discharge nozzle（231）, crush box（2）Inner chamber bottom surface be right low left high inclined-plane.
2. the stone pulverizing device according to claim 1 with precrushing mechanism, which is characterized in that the damper
（3）There are four be respectively distributed to pedestal（1）Bottom four corners at.
3. the stone pulverizing device according to claim 1 or 2 with precrushing mechanism, which is characterized in that the damping
Device（3）Including steel plate（31）, big ball（32）With small rubber ball（33）, steel plate（31）There are four block gaps to be stacked together, position
Steel plate in upper and lower both sides（31）Respectively with crush box（2）And pedestal（1）Connection, adjacent steel plate（31）Gap in be provided with it is more
A big ball（32）With small rubber ball（33）, adjacent steel plate（31）Opposite face on symmetrically offer multiple first caulking grooves
（311）With the second caulking groove（312）, the first caulking groove（311）With the second caulking groove（312）It is interspersed, big ball（32）It is inlaid in
First caulking groove（311）In, small rubber ball（33）It is inlaid in the second caulking groove（312）In.
4. the stone pulverizing device according to claim 1 with precrushing mechanism, which is characterized in that the pillar
（431）With drive disk（43）It is integrally formed.
5. the stone pulverizing device according to claim 1 with precrushing mechanism, which is characterized in that described first crushes
Roller（51）With the second pulverization roller（52）It is driven by external motor.
6. the stone pulverizing device according to claim 1 with precrushing mechanism, which is characterized in that the vibrator
（62）For high-frequency vibration exciter.
7. the stone pulverizing device according to claim 1 with precrushing mechanism, which is characterized in that the crush box
（2）Front side wall on be equipped with to steel sieve plate（6）Reset the operation door of operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721122902.8U CN207493743U (en) | 2017-09-04 | 2017-09-04 | A kind of stone pulverizing device with precrushing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721122902.8U CN207493743U (en) | 2017-09-04 | 2017-09-04 | A kind of stone pulverizing device with precrushing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207493743U true CN207493743U (en) | 2018-06-15 |
Family
ID=62497940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721122902.8U Expired - Fee Related CN207493743U (en) | 2017-09-04 | 2017-09-04 | A kind of stone pulverizing device with precrushing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207493743U (en) |
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| CN108993644A (en) * | 2018-07-20 | 2018-12-14 | 陈婷 | A kind of construction of road and bridge waste and old building stones jaw crushing recycle device |
| CN109012994A (en) * | 2018-07-11 | 2018-12-18 | 李进宅 | A kind of multistage crushing type shraff crushing device |
| CN109126969A (en) * | 2018-08-15 | 2019-01-04 | 苏州艾捷尔斯生物科技有限公司 | A kind of stalk crushing device with shock-absorbing function |
| CN109821610A (en) * | 2019-01-29 | 2019-05-31 | 吉林建筑大学 | A kind of environmental-protection treatment device for domestic garbage for building |
| CN110586294A (en) * | 2019-09-18 | 2019-12-20 | 杭州中禄新材料有限公司 | A automatic rubble processingequipment for cement manufacture |
| CN110694773A (en) * | 2019-10-26 | 2020-01-17 | 陈勇 | Civil engineering house building waste treatment device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109012994A (en) * | 2018-07-11 | 2018-12-18 | 李进宅 | A kind of multistage crushing type shraff crushing device |
| CN108993644A (en) * | 2018-07-20 | 2018-12-14 | 陈婷 | A kind of construction of road and bridge waste and old building stones jaw crushing recycle device |
| CN109126969A (en) * | 2018-08-15 | 2019-01-04 | 苏州艾捷尔斯生物科技有限公司 | A kind of stalk crushing device with shock-absorbing function |
| CN109126969B (en) * | 2018-08-15 | 2020-09-08 | 曾新泉 | Straw crushing device with shock-absorbing function |
| CN109821610B (en) * | 2019-01-29 | 2021-04-09 | 吉林建筑大学 | Domestic waste environmental protection processing apparatus for building |
| CN109821610A (en) * | 2019-01-29 | 2019-05-31 | 吉林建筑大学 | A kind of environmental-protection treatment device for domestic garbage for building |
| CN110586294A (en) * | 2019-09-18 | 2019-12-20 | 杭州中禄新材料有限公司 | A automatic rubble processingequipment for cement manufacture |
| CN110586294B (en) * | 2019-09-18 | 2020-06-30 | 浙江金圆水泥有限公司 | A automatic rubble processingequipment for cement manufacture |
| CN110694773A (en) * | 2019-10-26 | 2020-01-17 | 陈勇 | Civil engineering house building waste treatment device |
| CN110694773B (en) * | 2019-10-26 | 2021-06-01 | 湖南金喜居空间科技有限公司 | Civil engineering house building waste treatment device |
| CN111282697A (en) * | 2020-02-13 | 2020-06-16 | 李俊静 | Automatic grinding device of pharmaceutical additive |
| CN111282697B (en) * | 2020-02-13 | 2021-05-18 | 李文芳 | Automatic grinding device of pharmaceutical additive |
| CN111707074A (en) * | 2020-07-01 | 2020-09-25 | 浙江新派服饰有限公司 | Knitted fabric drying device capable of improving heat energy utilization rate |
| CN111760617A (en) * | 2020-07-07 | 2020-10-13 | 江西金石宝矿山机械制造有限公司 | Ore crusher with ore screening function |
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