CN108212488A - A kind of dust-proof ore pulverizer of spraying water - Google Patents
A kind of dust-proof ore pulverizer of spraying water Download PDFInfo
- Publication number
- CN108212488A CN108212488A CN201810165673.0A CN201810165673A CN108212488A CN 108212488 A CN108212488 A CN 108212488A CN 201810165673 A CN201810165673 A CN 201810165673A CN 108212488 A CN108212488 A CN 108212488A
- Authority
- CN
- China
- Prior art keywords
- housing
- crushing shaft
- level
- dust
- spray head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/22—Crushing mills with screw-shaped crushing means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
- B02C21/02—Transportable disintegrating plant
-
- 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
Abstract
The invention discloses a kind of dust-proof ore pulverizers of spraying water, including housing, spiral vermicelli leaf cutting wheel, axis, cleaning water pipe, spray head, water pump and slip filter cloth are ground, feed hopper is disposed on the housing, level-one crushing shaft, spiral vermicelli leaf cutting wheel, the first transmission gear, two level crushing shaft, axis is ground, the second transmission gear, motor, driving belt, cleaning water pipe, spray head, water pump, slides filter cloth, drainpipe, support tube, universal wheel and shock-absorbing spring；Antifouling door, connection hinge, control-rod, sliding sleeve, returning spring and fixed agraffe are disposed on spray head.The present invention uses multiple crushing mechanism, and cooperation progress shower water progress is dust-proof, and water body is recyclable and more environmentally-friendly, while can improve crush efficiency and crushing effect.
Description
Technical field
The present invention relates to a kind of exploitation of mineral resources machinery, the dust-proof ore pulverizer of specifically a kind of water spray.
Background technology
Mining is from the earth's crust and the technology and science of earth's surface exploit mineral resources.The mining of broad sense further includes coal and oil
Exploitation, mining industry is a kind of important primary industry, and metallic ore is the primary raw material of metallurgy industry, and non-metallic ore is
Important industrial chemicals and construction material needs progress break process after being dug up mine for building stones, adds in favor of subsequent
Work or collection, but existing stone pulverizing device is typically only capable to carry out a kind of the broken of model, either big material is still
Small material uniformly crushes, and not only directly shortens the service life of material in this way, but also cannot be to different size type
Building stones classification handled, moreover, a large amount of dust can be generated in crushing process, be diffused in surrounding air influence week
Collarette border, material, which is typically directly pounded, to be fallen in discharge outlet, without any safeguard measure, needs to improve.
In the prior art, it is typically all directly to be crushed using crushing knife tool or stone roller axis for the crushing of ore, powder
Broken process is single and crush efficiency and crushing effect be not high；In existing technology, dust is larger in crushing process, to environment with
And there is injury to operating personnel's body；In the prior art, the problem of water-pipe blockage being be easy to cause using dust-proof technology of spraying water.
Invention content
The purpose of the present invention is to provide a kind of dust-proof ore pulverizer of spraying water, to solve to carry in above-mentioned background technology
The problem of going out.
To achieve the above object, the present invention provides following technical solution：
A kind of dust-proof ore pulverizer of spraying water including housing, spiral vermicelli leaf cutting wheel, grinds axis, cleaning water pipe, spray
Head, water pump and slip filter cloth, the housing front are provided with seal cover board, and the housing upper end is connected with feed hopper, described
It is located between housing front and rear wall below the feed hopper and is symmetrically arranged with level-one crushing shaft, the level-one crushing shaft periphery is located at institute
It states welding in housing and is provided with spiral vermicelli leaf cutting wheel, the level-one crushing shaft front end is located at the welding setting of housing front front
There is the first transmission gear, be located between the housing front and rear wall below the level-one crushing shaft and be connected with two level crushing shaft,
The two level crushing shaft periphery is located at welding in the housing and is provided with stone roller axis, and the two level crushing shaft periphery is located at the housing
Positive front welding is provided with the second transmission gear, and being located at the housing front positioned at the two level crushing shaft front end in left side connects
It connects and is provided with motor, front end connects and sets between the two level crushing shaft positioned at right side and the level-one crushing shaft positioned at right side
Driving belt is equipped with, cleaning water pipe is provided on the right side of the housing, the cleaning water pipe upper end is connected with spray head, described
Antifouling door is provided on the left of spray head, the antifouling door lower end and the spray head lower end are connected with connection hinge,
The connection hinge left part lower end is connected with control-rod, and the control-rod middle part is vertical positioned at the cleaning water pipe with lower part
Part periphery is provided with sliding sleeve, and the control-rod periphery is located at the sliding sleeve upper end and is connected with returning spring, the cleaning
Water pipe left wall, which is located at below the control-rod, is connected with fixed agraffe, and the cleaning water pipe lower end is connected with water pump,
Lower end is connected with slip filter cloth in the housing, and the housing lower end is connected with drainpipe, the drainpipe lower end
Locking knob is connected with, housing lower end both sides are symmetrically arranged with support tube, universal wheel are connected in the support tube,
The universal wheel is made of live metal bar, baffle and idler wheel, in the universal wheel upper end and the support tube between upper wall
It is connected with shock-absorbing spring.
As further embodiment of the present invention：There are two the level-one crushing axial symmetry is set, the level-one crushing shaft can
It is rotated in the housing.
As further embodiment of the present invention：Two spiral vermicelli leaf cutting wheels positioned at both sides mutually agree with, the spiral shell
Rotation is intermeshed between crushing impeller.
As further embodiment of the present invention：Transmission is intermeshed between two first transmission gears.
As further embodiment of the present invention：It cooperates between the stone roller axis.
As further embodiment of the present invention：It is intermeshed between two second transmission gears of both sides.
As further embodiment of the present invention：The motor housing portion is fixed by welding in the housing front, institute
The output terminal and the two level crushing shaft for stating motor are welded and fixed.
As further embodiment of the present invention：The left end opening portion size phase of the antifouling door and the spray head
Together, the antifouling door right wall is connected with the sealing ring agreed with spray head opening portion split-phase.
As further embodiment of the present invention：The connection hinge left end connects fixation, the connection with the spray head
Hinge right end connects fixation with the spray head lower end, and torsionspring is connected between the connection hinge both ends.
As further embodiment of the present invention：It is described slip filter cloth be welded on the baltimore groove of the inner walls both sides with
And strainer composition fixed with the matched metal framework of baltimore groove.
Compared with prior art, the beneficial effects of the invention are as follows：Ore is put by feed hopper in housing during use, at this time
Starting motor drives two level crushing shaft rotation to move, and by the engaged transmission of the second transmission gear, passes through the transmission of driving belt, material
The preliminary crushing of spiral vermicelli leaf cutting wheel can be passed through and grind the separating twice of axis, such setting can pass through multiple processing
Better crushing effect is obtained, the kind of drive is used as by the first transmission gear and the second transmission gear, the transmission effect when crushing
Rate is more preferable；A large amount of airborne dust can be generated when ore crushes, after control-rod lower end is pulled downward on first at this time, is taken by fixation
Button is fixed, and control-rod is moved down by sliding sleeve drives antifouling door to turn left, and starts water pump by water body by cleaning water pipe
It is sprayed afterwards from spray head, airborne dust can be avoided to generate pollution to the external world by water spray in this way, while flow can be with powder together
Downwards, the utilization rate higher of such material, processing effect is more preferable, while spray head, antifouling door, connection hinge and control-rod
Design can avoid the problem that felt jam occurs at spray head for dust accretions when not spraying water, and reduces asking for maintenance
Topic；By sliding the filtering of filter cloth after crushing and processing after material and water mixing, material is all trapped within slip filter cloth surface,
Water body is discharged by drainpipe, such design can direct separation of solid and liquid, degree of purity is more preferable after the drying materials after separation；Branch
The increase of support cylinder, universal wheel and shock-absorbing spring can improve the mobility of device, while device also is able to have good vibration damping
Effect.
Description of the drawings
Fig. 1 is a kind of structure diagram for dust-proof ore pulverizer of spraying water.
Fig. 2 is a kind of dust-proof ore pulverizer positive structure diagram of spraying water.
Fig. 3 is the selected structure diagram for crushing impeller in a kind of dust-proof ore pulverizer of spraying water.
Fig. 4 is the structure diagram of spray head and cleaning water pipe in a kind of dust-proof ore pulverizer of spraying water.
In figure：1- housings, 2- feed hoppers, 3- level-one crushing shafts, 4- spiral vermicelli leaf cutting wheels, the first transmission gears of 5-, 6- bis-
Grade crushing shaft, 7- stone roller axis, the second transmission gears of 8-, 9- motors, 10- driving belts, 11- cleaning water pipes, 12- spray heads, 13- prevent
Dirty door, 14- connection hinges, 15- control-rods, 16- sliding sleeves, 17- returning springs, 18- fixed agraffes, 19- water pumps, 20- are slided
Filter cloth, 21- drainpipes, 22- support tubes, 23- universal wheels, 24- shock-absorbing springs.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig.1~4, in the embodiment of the present invention, a kind of dust-proof ore pulverizer of spraying water, including housing 1, spiral
Impeller 4 is crushed, axis 7, cleaning water pipe 11, spray head 12, water pump 19 is ground and slides filter cloth 20,1 front of housing is provided with sealing
Cover board can be discharged by seal cover board, and 1 upper end of housing is connected with feed hopper 2, between 1 front and rear wall of housing
Level-one crushing shaft 3 is symmetrically arranged with positioned at 2 lower section of feed hopper, the level-one crushing shaft 3 is arranged with two, the level-one
Crushing shaft 3 can rotate in the housing 1, and 3 periphery of level-one crushing shaft is located at welding in the housing 1 and is provided with spiral
Impeller 4 is crushed, two spiral vermicelli leaf cutting wheels 4 positioned at both sides mutually agree with, mutually nibbled between the spiral vermicelli leaf cutting wheel 4
It closes, the ore fallen into the feed hopper 2 can pass through the preliminary crushing of the spiral vermicelli leaf cutting wheel 4, the level-one crushing shaft 3
Front end, which is located to weld in front of 1 front of housing, is provided with the first transmission gear 5, phase between two first transmission gears 5
Mutually engaged transmission is located at 3 lower section of level-one crushing shaft between 1 front and rear wall of housing and is connected with two level crushing shaft 6, institute
It states two level crushing shaft 6 and the level-one crushing shaft 3 is correspondingly arranged, 6 periphery of two level crushing shaft, which is located in the housing 1, welds
It is provided with and grinds axis 7, cooperate between the stone roller axis 7, the stone roller axis 7 can be by the spiral vermicelli leaf cutting wheel 4 when relatively rotating
The material fallen after processing further crushes, and can obtain better converted products in this way, and 6 periphery of two level crushing shaft is located at
The 1 front front welding of housing is provided with the second transmission gear 8, between two second transmission gears 8 of both sides
Intermeshing, can coordinate transmission in this way, be located at the 1 front connection of housing positioned at 6 front end of two level crushing shaft in left side
Be provided with motor 9,9 casing part of motor is fixed by welding in 1 front of housing, the output terminal of the motor 9 and
The two level crushing shaft 6 is welded and fixed, and the rotation of motor 9 drives the two level crushing shaft 6 to rotate, and described two positioned at right side
Grade crushing shaft 6 and front end is connected with driving belt 10 between the level-one crushing shaft 3 on right side, passes through the transmission
Belt 10, the two level crushing shaft 6 drive the level-one crushing shaft 3 to rotate, and 1 right side of housing is provided with cleaning water pipe 11,
The cleaning water pipe 11 is weldingly fixed on 1 right side of housing, and 11 upper end of the cleaning water pipe is connected with spray head 12, institute
Spray head 12 is stated through 2 right wall of feed hopper and is horizontally disposed with, when ore materials put into the housing by the feed hopper 2
In 1, flow by the spray head 12 is sprayed by the cleaning water pipe 11, dust can be avoided to raise, while pass through water
Impurity can be removed and powder is avoided to adhere to by washing, and improve the utilization rate of material, and 12 left side of spray head is provided with antifouling gear
Lid 13, the antifouling door 13 is identical with the left end opening portion size of the spray head 12, and antifouling 13 right wall of door connects
It is connected to the sealing ring agreed with the 12 opening portion split-phase of spray head, 12 lower end of antifouling 13 lower end of door and the spray head
Connection hinge 14 is connected with, connection 14 left end of hinge and the connection of the spray head 12 are fixed, the connection hinge 14
Right end connects fixation with 12 lower end of spray head, and the connection hinge is connected with torsionspring between 14 both ends, described antifouling
It is fitted closely when door 13 is flat with the spray head 12,14 left part lower end of the connection hinge is connected with control-rod 15, institute
It states control-rod 15 to extend downwardly along the left side of the cleaning water pipe 11,15 middle part of control-rod and lower part are located at the cleaning
11 vertical component periphery of water pipe is provided with sliding sleeve 16, and the sliding sleeve 16 and cleaning 11 left wall of water pipe are welded and fixed, and pass through institute
The control-rod 15 can be pulled downward on by stating sliding sleeve 16, and 15 periphery of control-rod is connected with positioned at 16 upper end of sliding sleeve
Returning spring 17, when pulling downward on the control-rod 15, the returning spring 17 is compressed, 11 left wall position of the cleaning water pipe
Fixed agraffe 18 is connected in 15 lower section of control-rod, it can be in 15 quilt of control-rod by the fixed agraffe 18
The position of the control-rod 15 is fixed when pulling down, 11 lower end of the cleaning water pipe is connected with water pump 19, and the water pump 19 opens
Fixed water source can be connected after dynamic, and flow is injected after the cleaning water pipe 11 and is sprayed by the spray head 12, the shell
Lower end, which is connected with, in body 1 slides filter cloth 20, and the slip filter cloth 20 is the baltimore groove for being welded on the 1 inner wall both sides of housing
And fixed with the matched metal framework of baltimore groove strainer composition, the slip filter cloth 20 can activity remove, work as flow
When being swept away with pulverized material, described slide after filter cloth 20 filters off moisture can will stop progress by the split crushed
Centralized collection, 1 lower end of housing are connected with drainpipe 21, and 21 lower end of drainpipe is connected with locking knob, cleaning
Water is discharged after being filtered by the slip filter cloth 20 by the drainpipe 21, and the 1 lower end both sides of housing are symmetrically arranged with
Support tube 22 is connected with universal wheel 23 in the support tube 22, and the universal wheel 23 is by live metal bar, baffle and rolling
Wheel forms, and is connected with shock-absorbing spring 24 between upper wall in 23 upper end of universal wheel and the support tube 22, in this way can
To external influence when avoiding equipment operation.
The present invention operation principle be：Ore is put by feed hopper 2 in housing 1 during use, is started motor 9 at this time and is driven
Two level crushing shaft 6 rotates, and by the engaged transmission of the second transmission gear 8, by the transmission of driving belt 10, material can pass through
The preliminary crushing of spiral vermicelli leaf cutting wheel 4 and the separating twice for grinding axis 7, such setting can be obtained more by multiple processing
Good crushing effect, be used as the kind of drive by the first transmission gear 5 and the second transmission gear 8, and in crushing, transmission efficiency is more
It is good；A large amount of airborne dust can be generated when ore crushes, after 15 lower end of control-rod is pulled downward on first at this time, by fixed agraffe
18 fix, and control-rod 15 is moved down by sliding sleeve 16 drives antifouling door 13 to turn left, and starts water pump 19 and passes through water body
It is sprayed after cleaning water pipe 11 from spray head 12, airborne dust can be avoided to generate pollution, while flow energy to the external world by water spray in this way
It reaches and powder is downward together, the utilization rate higher of such material, processing effect is more preferable, while spray head 12, antifouling door 13, company
The design of engagement page 14 and control-rod 15 can avoid dust accretions when not spraying water that cohesive block up occurs at spray head 12
The problem of plug, reduces the problem of safeguarding；By sliding the filtering of filter cloth 20, object after crushing and processing after material and water mixing
Material, which is all trapped within, slides filter cloth 20 surface, and water body is discharged by drainpipe 21, such design can direct separation of solid and liquid, point
Degree of purity is more preferable after drying materials from after；The increase of support tube 22, universal wheel 23 and shock-absorbing spring 24 can improve device
Mobility, while device also is able to have good effectiveness in vibration suppression.
It is obvious to a person skilled in the art that the present invention is not limited to the details of above-mentioned exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requirement rather than above description limit, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.Any reference numeral in claim should not be considered as to the involved claim of limitation.
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 (10)
1. a kind of dust-proof ore pulverizer of spraying water, including housing, spiral vermicelli leaf cutting wheel, grind axis, cleaning water pipe, spray head,
Water pump and slip filter cloth, which is characterized in that the housing front is provided with seal cover board, and the housing upper end is connected with charging
It struggles against, is located at below the feed hopper between the housing front and rear wall and is symmetrically arranged with level-one crushing shaft, outside the level-one crushing shaft
It encloses the welding in the housing and is provided with spiral vermicelli leaf cutting wheel, the level-one crushing shaft front end is located at housing front front
Welding is provided with the first transmission gear, is located between the housing front and rear wall below the level-one crushing shaft and is connected with two level
Crushing shaft, the two level crushing shaft periphery are located at welding in the housing and are provided with stone roller axis, and the two level crushing shaft periphery is located at
Housing front front welding is provided with the second transmission gear, is located at the shell positioned at the two level crushing shaft front end in left side
Body front is connected with motor, between the two level crushing shaft positioned at right side and the level-one crushing shaft positioned at right side before
End is connected with driving belt, and cleaning water pipe is provided on the right side of the housing, and the cleaning water pipe upper end is connected with spray
Head is drenched, is provided with antifouling door on the left of the spray head, the antifouling door lower end and the spray head lower end are connected with
Hinge is connected, the connection hinge left part lower end is connected with control-rod, is located in the middle part of the control-rod with lower part described clear
Clean water pipe vertical component periphery is provided with sliding sleeve, and the control-rod periphery is located at the sliding sleeve upper end and is connected with reply bullet
Spring, the cleaning water pipe left wall, which is located at below the control-rod, is connected with fixed agraffe, cleaning water pipe lower end connection
Water pump is provided with, lower end is connected with slip filter cloth in the housing, and the housing lower end is connected with drainpipe, described
Drainpipe lower end is connected with locking knob, and housing lower end both sides are symmetrically arranged with support tube, connect and set in the support tube
Universal wheel is equipped with, the universal wheel is made of live metal bar, baffle and idler wheel, the universal wheel upper end and the support tube
Shock-absorbing spring is connected between interior upper wall.
A kind of 2. dust-proof ore pulverizer of spraying water according to claim 1, which is characterized in that the level-one crushing shaft
Two are arranged with, the level-one crushing shaft can rotate in the housing.
3. a kind of dust-proof ore pulverizer of spraying water according to claim 1, which is characterized in that two positioned at both sides
The spiral vermicelli leaf cutting wheel mutually agrees with, and is intermeshed between the spiral vermicelli leaf cutting wheel.
4. a kind of dust-proof ore pulverizer of spraying water according to claim 1, which is characterized in that two described first pass
Transmission is intermeshed between moving gear.
A kind of 5. dust-proof ore pulverizer of spraying water according to claim 1, which is characterized in that phase between the stone roller axis
Mutually cooperation.
6. a kind of dust-proof ore pulverizer of spraying water according to claim 1, which is characterized in that two positioned at both sides
It is intermeshed between second transmission gear.
A kind of 7. dust-proof ore pulverizer of spraying water according to claim 1, which is characterized in that the motor housing portion
Divide and be fixed by welding in the housing front, the output terminal of the motor and the two level crushing shaft are welded and fixed.
8. a kind of dust-proof ore pulverizer of spraying water according to claim 1, which is characterized in that the antifouling door and
The left end opening portion size of the spray head is identical, and the antifouling door right wall is connected with and spray head opening portion split-phase
The sealing ring agreed with.
9. a kind of dust-proof ore pulverizer of spraying water according to claim 1, which is characterized in that the connection hinge is left
End connects fixation with the spray head, and the connection hinge right end connects fixation, the connection hinge with the spray head lower end
Torsionspring is connected between both ends.
A kind of 10. dust-proof ore pulverizer of spraying water according to claim 1, which is characterized in that the slip filter cloth
To be welded on the baltimore groove of the inner walls both sides and strainer fixed with the matched metal framework of baltimore groove composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810165673.0A CN108212488A (en) | 2018-02-12 | 2018-02-12 | A kind of dust-proof ore pulverizer of spraying water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810165673.0A CN108212488A (en) | 2018-02-12 | 2018-02-12 | A kind of dust-proof ore pulverizer of spraying water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108212488A true CN108212488A (en) | 2018-06-29 |
Family
ID=62662341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810165673.0A Withdrawn CN108212488A (en) | 2018-02-12 | 2018-02-12 | A kind of dust-proof ore pulverizer of spraying water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108212488A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108940430A (en) * | 2018-07-11 | 2018-12-07 | 俞友航 | One kind going out the sufficient Medical liquor extraction apparatus of liquid |
| CN109433390A (en) * | 2018-10-31 | 2019-03-08 | 李娜 | A kind of building waste grinding device for building |
-
2018
- 2018-02-12 CN CN201810165673.0A patent/CN108212488A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108940430A (en) * | 2018-07-11 | 2018-12-07 | 俞友航 | One kind going out the sufficient Medical liquor extraction apparatus of liquid |
| CN109433390A (en) * | 2018-10-31 | 2019-03-08 | 李娜 | A kind of building waste grinding device for building |
| CN109433390B (en) * | 2018-10-31 | 2020-06-16 | 安徽中沃建筑工程有限公司 | Building rubbish reducing mechanism for building |
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Application publication date: 20180629 |
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| WW01 | Invention patent application withdrawn after publication |