CN209649547U - A kind of wiring board stripping machine dry film slag collection device - Google Patents

A kind of wiring board stripping machine dry film slag collection device Download PDF

Info

Publication number
CN209649547U
CN209649547U CN201821499263.1U CN201821499263U CN209649547U CN 209649547 U CN209649547 U CN 209649547U CN 201821499263 U CN201821499263 U CN 201821499263U CN 209649547 U CN209649547 U CN 209649547U
Authority
CN
China
Prior art keywords
dehydration tube
fixedly connected
filter cylinder
bull stick
film slag
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.)
Active
Application number
CN201821499263.1U
Other languages
Chinese (zh)
Inventor
何建芬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongyang (boluo) Electronics Co Ltd
Original Assignee
Dongyang (boluo) Electronics Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dongyang (boluo) Electronics Co Ltd filed Critical Dongyang (boluo) Electronics Co Ltd
Priority to CN201821499263.1U priority Critical patent/CN209649547U/en
Application granted granted Critical
Publication of CN209649547U publication Critical patent/CN209649547U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Filtration Of Liquid (AREA)

Abstract

The utility model discloses a kind of wiring board stripping machine dry film slag collection devices, belong to pcb board processing technique field, a kind of wiring board stripping machine dry film slag collection device, including working substrate, dehydration tube is equipped on the upside of working substrate, a pair of of support plate is fixedly connected between dehydration tube and working substrate, filter cylinder is equipped in dehydration tube, fixed frustum is equipped in filter cylinder, fixation is plugged with center bull stick in fixed frustum, and the outside that dehydration tube extends to dehydration tube is run through in center bull stick left and right ends, dehydration tube, which is dug, a pair of turn hole to match with center bull stick, filter cylinder left and right ends are respectively open and sealed end, filter cylinder right end, which is equally dug, the turn hole to match with center bull stick, fixed frustum fixed sleeves are connected to spire, and the screw pitch of spire is gradually increased from left to right, digging on filter cylinder has multiple equally distributed first Liquid drain hole may be implemented to reduce moisture content convenient for being carried out dehydrating filtered film slag.

Description

A kind of wiring board stripping machine dry film slag collection device
Technical field
The utility model relates to pcb board processing technique fields, more specifically to a kind of wiring board stripping machine dry film Slag collection device.
Background technique
What the membrane slag filter of equipment DES, SES line used in present printed wiring board production process generallyd use is The filtering of vertical rotary cylinder formula, the filter screen that this drum filtration uses are driven by motor and are rotated with certain speed for stainless steel material, Liquid parting with film slag is sprayed by circulating pump onto the stainless (steel) wire of rotation, and filter area is the region of 200X300mm;This Main problem existing for structure is: 1, filter area is too small, and liquid parting has part liquid parting without filtering when spraying on the net It is passed straight back in production slot, poor filtration effect, these filter not clean film slag and can be attached on production plate, cause rear process Copper problem is leaked, it is very harmful;2, because using stainless (steel) wire and being rotation, net is easy to damage, and the frequency of more draping is very Height, cost of equipment maintenance is too high, and about 1200 yuan of each stainless (steel) wire, monthly every needs to change 6-7, a medium-sized circuit board plant There are about 4, DES, SES line, and monthly this changes about 30000 yuan of spare part expense.
A kind of Chinese membrane slag filter that wiring board stripping machine uses of utility model Publication No. CN201791416U, Be characterized in that being filtered by film slag and collect two parts with film slag and form: the main liquid bath that connects connects liquid bath and is connected with secondary, secondary to connect liquid bath bottom surface It is higher than the main liquid bath bottom surface that connects, and bottom surface connects plane locating for liquid bath with master and is tilted a certain angle upwards;Filter screen is fixed on filter screen On bracket, oscillating column pump bracket is mutually fixed with filter screen stand, and electrodynamic type oscillating column pump is fixed on oscillating column pump bracket, and the main liquid bath that connects leads to It crosses back liquid overflow passage to be connected with production major trough, constitutes film slag filtration fraction, upper slot position is in the secondary end for connecing liquid bath and filter screen End;The bottom surface of upper slot is bottom surface filter screen, and lower slot position is below upper slot;Lower slot produces master by the way that return line and reflux pump are same Slot is connected to form film slag collection part, which uses incline structure under the vibration of oscillating column pump, does not need it His external force film slag can directly fall to film slag collecting tank, very convenient.
Although in above scheme a kind of membrane slag filter that wiring board stripping machine uses can effective collection membrane slag, Contain a large amount of waste liquids without the film slag of dehydration, not only increases cost when the outer processing of committee is sold, and be easy to make environment At pollution, in addition the wet film slag containing waste liquid is collected and transport is all inconvenient, and the hydrops of generation is easy leakage.
Utility model content
1. technical problems to be solved
Aiming at the problems existing in the prior art, it uses and does the purpose of this utility model is to provide a kind of wiring board stripping machine Film slag collection device, it may be implemented to be carried out dehydrating filtered film slag, reduce moisture content.
2. technical solution
To solve the above problems, the utility model adopts the following technical scheme.
A kind of wiring board stripping machine dry film slag collection device, including working substrate, the working substrate upside are equipped with de- Water drum is fixedly connected with a pair of of support plate, is equipped with filter cylinder, the filter in the dehydration tube between the dehydration tube and working substrate Fixed frustum is equipped in cylinder, fixation is plugged with center bull stick in the fixed frustum, and center bull stick left and right ends run through de- Water drum extends to the outside of dehydration tube, and the dehydration tube, which is dug, a pair of turn hole to match with center bull stick, and the filter cylinder is left Right both ends are respectively open and sealed end, and the filter cylinder right end, which is equally dug, the turn hole to match with center bull stick, described solid Determine frustum fixed sleeves and be connected to spire, and the screw pitch of spire is gradually increased from left to right, there is multiple cutting on the filter cylinder Equally distributed first liquid drain hole, the filter cylinder right end cutting has a pair of first slag hole, solid between the filter cylinder and dehydration tube Surely it is connected with a pair of of fixed ring, the dehydration tube left upper end cutting has feed opening, charging leakage is fixedly connected in the feed opening Bucket, the dehydration tube left side are respectively equipped with motor body and speed reducer ontology, and the motor body lower end is fixedly connected with Vibration damper plate, and be fixedly connected between vibration damper plate and working substrate, speed reducer ontology lower end is equally fixedly connected with vibration damper plate, It is sequentially connected between the motor body and speed reducer ontology by shaft coupling, the output end of the speed reducer ontology and center Bull stick left end is fixedly connected, and the dehydration tube right end cutting has the second slag hole, is equipped with dry film slag on the downside of second slag hole Collecting box, and be fixedly connected between dry film slag collecting box and working substrate, the dehydration tube lower end, which is dug, multiple be uniformly distributed The second liquid drain hole, be equipped with waste liquid collecting box on the downside of second liquid drain hole, and fixed between waste liquid collecting box and working substrate Connection may be implemented to reduce moisture content convenient for being carried out dehydrating filtered film slag.
Further, it is equipped with wiper ring between a pair of fixed ring, it is soft that the wiper ring inner end is fixedly connected with annular Property bristle, the wiper ring upper end is fixedly connected with poke rod, and the dehydration tube upper end, which is dug, the cunning to match with poke rod Hole, and poke rod extends on the outside of dehydration tube through slide opening, is slidably connected between the poke rod and slide opening, convenient for saturating to first Fluid apertures is cleared up and is dredged, and reduce causes waste liquid not to be discharged normally because film slag fine crushing blocks the first liquid drain hole, and then influences To the dehydration rate of film slag.
Further, the wiper ring rear and front end is fixedly connected to guide runner, digs on the dehydration tube inner wall There is a pair of guide chute to match with guide runner, and be slidably connected between guide runner and guide chute, is slided by guiding Cooperation between block and guide chute improves stability when wiper ring movement.
Further, it is equipped with bearing block at left and right sides of the dehydration tube, the bearing block includes bearing bracket stand and fixing axle It holds, is rotatablely connected between the fixing bearing and center bull stick, improve the stability when bar rotation of center.
Further, the motor body and speed reducer are originally coated with heat conductive silica gel in vitro, convenient for motor body and Speed reducer ontology radiates at work.
3. beneficial effect
Compared with the prior art, utility model has the advantages that
(1) this programme may be implemented to reduce moisture content convenient for being carried out dehydrating filtered film slag.
(2) it is equipped with wiper ring between a pair of of fixed ring, wiper ring inner end is fixedly connected with annular flexible bristle, on wiper ring End is fixedly connected with poke rod, and dehydration tube upper end, which is dug, the slide opening to match with poke rod, and poke rod extends through slide opening It on the outside of to dehydration tube, is slidably connected between poke rod and slide opening, convenient for the first liquid drain hole is cleared up and dredged, reduces because thin Broken film slag, which blocks the first liquid drain hole, causes waste liquid not to be discharged normally, and then influences the dehydration rate of film slag.
(3) wiper ring rear and front end is fixedly connected to guide runner, and digging on dehydration tube inner wall has a pair of and guiding to slide The guide chute that block matches, and being slidably connected between guide runner and guide chute, by guide runner and guide chute it Between cooperation improve wiper ring it is mobile when stability.
(4) bearing block is equipped at left and right sides of dehydration tube, bearing block includes bearing bracket stand and fixing bearing, and fixing bearing is in It is rotatablely connected between heart bull stick, improves the stability when bar rotation of center.
(5) motor body and speed reducer are originally coated with heat conductive silica gel in vitro, are convenient for motor body and speed reducer ontology It radiates at work.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model;
Fig. 2 is the internal explosion figure of the dehydration tube part of the utility model;
Fig. 3 is the schematic diagram of internal structure of the dehydration tube part of the utility model.
Figure label explanation:
1 working substrate, 2 dehydration tubes, 3 center bull sticks, 4 fixed frustums, 5 spires, 6 filter cylinders, 7 fixed rings, 8 wiper rings, 9 First liquid drain hole, 10 guide runners, 11 poke rods, 12 first slag holes, 13 loading hoppers, 14 feed openings, 15 second liquid drain holes, 16 annular flexible bristles, 17 vibration damper plates, 18 motor bodies, 19 speed reducer ontologies, 20 bearing blocks, 21 support plates, 22 waste liquids are received Header, 23 dry film slag collecting boxs, 24 second slag holes.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe;Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment, based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.
In the description of the present invention, it should be noted that term " on ", "lower", "inner", "outside", " top/bottom end " etc. The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description the utility model It is described with simplifying, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation structure It makes and operates, therefore should not be understood as limiting the present invention.In addition, term " first ", " second " are only used for description mesh , it is not understood to indicate or imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " being provided with ", " be arranged/connect ", " connection " etc., shall be understood in a broad sense, such as " connection ", may be a fixed connection, can also be with It is to be detachably connected, or be integrally connected;It can be mechanical connection, be also possible to be electrically connected;It can be directly connected, it can also be with Indirectly connected through an intermediary, it can be the connection inside two elements.For the ordinary skill in the art, may be used The concrete meaning of above-mentioned term in the present invention is understood with concrete condition.
Embodiment 1:
Please refer to Fig. 1-3, a kind of wiring board stripping machine dry film slag collection device, including working substrate 1, working substrate 1 Upside is equipped with dehydration tube 2, and a pair of of support plate 21 is fixedly connected between dehydration tube 2 and working substrate 1, is played a supporting role, and takes off Be equipped with filter cylinder 6 in water drum 2, fixed frustum 4 be equipped in filter cylinder 6, fixed frustum 4 is frustum type structure, and from left to right size by Cumulative big, fixation is plugged with center bull stick 3 in fixed frustum 4, and bull stick 3 left and right ends in center are run through dehydration tube 2 and extended to The outside of dehydration tube 2, dehydration tube 2, which is dug, a pair of turn hole to match with center bull stick 3, and 6 left and right ends of filter cylinder are respectively spacious Mouth and sealed end, for 6 left end of filter cylinder for feeding, 6 right end of filter cylinder, which is equally dug, the turn hole to match with center bull stick 3, fixed 4 fixed sleeves of frustum are connected to spire 5, and spire 5 is screw-pushing type structure, and the screw pitch of spire 5 is from left to right gradually Increase, film slag can not only be driven to advance, acceptable and filter cylinder 6 cooperates squeeze film slag to realize dehydration, there is multiple cutting on filter cylinder 6 Equally distributed first liquid drain hole 9 is flowed out for the waste liquid under squeezing from film slag, and the cutting of 6 right end of filter cylinder has a pair of first slag Hole 12 is fallen for dewatered film slag, and a pair of of fixed ring 7 is fixedly connected between filter cylinder 6 and dehydration tube 2, not only acts as fixation Under the action of filter cylinder 6, it can also realize that sealing effect, film slag are not easy to be deposited in dehydration tube 2, the cutting of 2 left upper end of dehydration tube has Feed opening 14 is fixedly connected with loading hopper 13 for feeding in feed opening 14, facilitate charging, be respectively equipped on the left of dehydration tube 2 Motor body 18 and speed reducer ontology 19, motor body 18 are used to match and turn for providing driving force, speed reducer ontology 19 Speed, 18 lower end of motor body is fixedly connected with vibration damper plate 17, and is fixedly connected between vibration damper plate 17 and working substrate 1, slows down 19 lower end of machine ontology is equally fixedly connected with vibration damper plate 17, is passed between motor body 18 and speed reducer ontology 19 by shaft coupling Dynamic connection, the output end of speed reducer ontology 19 are fixedly connected with 3 left end of center bull stick, and the cutting of 2 right end of dehydration tube has the second slag Hole 24 is equipped with dry film slag collecting box 23 on the downside of second slag hole 24, and fixed between dry film slag collecting box 23 and working substrate 1 connects It connects, 2 lower end of dehydration tube, which is dug, multiple equally distributed second liquid drain holes 15, and waste liquid collecting box is equipped on the downside of the second liquid drain hole 15 22, and be fixedly connected between waste liquid collecting box 22 and working substrate 1.
Further, wiper ring 8 is equipped between a pair of of fixed ring 7,8 inner end of wiper ring is fixedly connected with annular flexible bristle 16,8 upper end of wiper ring is fixedly connected with poke rod 11, and 2 upper end of dehydration tube, which is dug, the slide opening to match with poke rod 11, and dials Lever 11 extends to 2 outside of dehydration tube through slide opening, is slidably connected between poke rod 11 and slide opening, convenient for the first liquid drain hole 9 It is cleared up and is dredged, reduce causes waste liquid not to be discharged normally because film slag fine crushing blocks the first liquid drain hole 9, and then influences film The dehydration rate of slag, 8 rear and front end of wiper ring are fixedly connected to guide runner 10, and digging on 2 inner wall of dehydration tube has a pair and lead The guide chute to match to sliding block 10, and being slidably connected between guide runner 10 and guide chute, by guide runner 10 with Cooperation between guide chute improves the stability when movement of wiper ring 8, is equipped with bearing block 20, axis at left and right sides of dehydration tube 2 Holding seat 20 includes bearing bracket stand and fixing bearing, is rotatablely connected between fixing bearing and center bull stick 3, improves center bull stick 3 and rotates When stability, be coated with heat conductive silica gel outside motor body 18 and speed reducer ontology 19, convenient for motor body 18 and slow down Machine ontology 19 radiates at work.
Referring to Fig. 1, technical staff selects the motor body 18 and speed reducer ontology of suitable types according to the actual situation 19, such as the model Y90S-2 of motor body 18, the model RF27R17 type of speed reducer ontology 19, technical staff is by line The filtered film slag of demoulding enters dehydration tube 2 by loading hopper 13 on the plate of road, starts motor body 18 and speed reducer ontology 19 drive center bull stick 3 to rotate, and then drive the rotation of fixed frustum 4 and spire 5, and the rotation of spire 5 drives moisture film Slag is threadingly advanced, and is gradually reduced as screw pitch increases the gap between spire 5 and filter cylinder 6, acts on lower film slag in screw extrusion In the waste liquid that contains be extruded out and flowed down under the effect of gravity by the first more tiny liquid drain hole 9, and pass through dehydration tube 2 Second liquid drain hole 15 of lower end, which flows down to collect via waste liquid collecting box 22, to be uniformly processed, by dewatered film slag in filter cylinder It squeezes out in second liquid drain hole 15 of 6 right ends and is fallen from the second slag hole 24 and collected via dry film slag collecting box 23, when When first liquid drain hole 9 blocks, drive wiper ring 8 mobile by poke rod 11, annular flexible bristle 16 is to thin in the first liquid drain hole 9 Broken film slag carries out dredging cleaning, compared with prior art, may be implemented to reduce convenient for being carried out dehydrating filtered film slag Moisture content.
The preferable specific embodiment of the above, only the utility model;But the protection scope of the utility model is not It is confined to this.Anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this Novel technical solution and its improvement design is subject to equivalent substitution or change, should all cover in the protection scope of the utility model It is interior.

Claims (5)

1. a kind of wiring board stripping machine dry film slag collection device, including working substrate (1), it is characterised in that: the work base Dehydration tube (2) are equipped on the upside of plate (1), are fixedly connected with a pair of of support plate between the dehydration tube (2) and working substrate (1) (21), filter cylinder (6) are equipped in the dehydration tube (2), fixed frustum (4), the fixed frustum (4) is equipped in the filter cylinder (6) Interior fixation is plugged with center bull stick (3), and center bull stick (3) left and right ends run through dehydration tube (2) and extend to dehydration tube (2) Outside, the dehydration tube (2), which is dug, a pair of turn hole to match with center bull stick (3), filter cylinder (6) the left and right ends difference For open and sealed end, filter cylinder (6) right end, which is equally dug, the turn hole to match with center bull stick (3), the fixed cone Platform (4) fixed sleeves are connected to spire (5), and the screw pitch of spire (5) is gradually increased from left to right, are opened on the filter cylinder (6) Multiple equally distributed first liquid drain holes (9) are carved with, filter cylinder (6) the right end cutting has a pair of first slag hole (12), described It is fixedly connected between filter cylinder (6) and dehydration tube (2) a pair of of fixed ring (7), dehydration tube (2) the left upper end cutting has feed opening (14), it is fixedly connected with loading hopper (13) in the feed opening (14), is respectively equipped with motor sheet on the left of the dehydration tube (2) Body (18) and speed reducer ontology (19), motor body (18) lower end is fixedly connected with vibration damper plate (17), and vibration damper plate (17) it being fixedly connected between working substrate (1), speed reducer ontology (19) lower end is equally fixedly connected with vibration damper plate (17), It is sequentially connected between the motor body (18) and speed reducer ontology (19) by shaft coupling, the speed reducer ontology (19) Output end is fixedly connected with center bull stick (3) left end, and dehydration tube (2) right end cutting has the second slag hole (24), and described the Dry film slag collecting box (23) is equipped on the downside of two slag holes (24), and fixed between dry film slag collecting box (23) and working substrate (1) Connection, dehydration tube (2) lower end, which is dug, multiple equally distributed second liquid drain holes (15), under second liquid drain hole (15) Side is equipped with waste liquid collecting box (22), and is fixedly connected between waste liquid collecting box (22) and working substrate (1).
2. a kind of wiring board stripping machine dry film slag collection device according to claim 1, it is characterised in that: described in a pair Wiper ring (8) are equipped between fixed ring (7), wiper ring (8) inner end is fixedly connected with annular flexible bristle (16), described clear Clean ring (8) upper end is fixedly connected with poke rod (11), and dehydration tube (2) upper end, which is dug, the cunning to match with poke rod (11) Hole, and poke rod (11) extends on the outside of dehydration tube (2) through slide opening, is slidably connected between the poke rod (11) and slide opening.
3. a kind of wiring board stripping machine dry film slag collection device according to claim 2, it is characterised in that: the cleaning Ring (8) rear and front end is fixedly connected to guide runner (10), and digging on dehydration tube (2) inner wall has a pair of and guide runner (10) guide chute to match, and be slidably connected between guide runner (10) and guide chute.
4. a kind of wiring board stripping machine dry film slag collection device according to claim 1, it is characterised in that: the dehydration It is equipped with bearing block (20) at left and right sides of cylinder (2), the bearing block (20) includes bearing bracket stand and fixing bearing, the fixing bearing It is rotatablely connected between center bull stick (3).
5. a kind of wiring board stripping machine dry film slag collection device according to claim 1, it is characterised in that: described electronic Machine ontology (18) and speed reducer ontology (19) are coated with heat conductive silica gel outside.
CN201821499263.1U 2018-09-13 2018-09-13 A kind of wiring board stripping machine dry film slag collection device Active CN209649547U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821499263.1U CN209649547U (en) 2018-09-13 2018-09-13 A kind of wiring board stripping machine dry film slag collection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821499263.1U CN209649547U (en) 2018-09-13 2018-09-13 A kind of wiring board stripping machine dry film slag collection device

Publications (1)

Publication Number Publication Date
CN209649547U true CN209649547U (en) 2019-11-19

Family

ID=68505341

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201821499263.1U Active CN209649547U (en) 2018-09-13 2018-09-13 A kind of wiring board stripping machine dry film slag collection device

Country Status (1)

Country Link
CN (1) CN209649547U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114259784A (en) * 2021-12-16 2022-04-01 安徽美晟生态林业开发有限公司 A multistage filter equipment for tea-seed oil squeezes is convenient for change filter screen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114259784A (en) * 2021-12-16 2022-04-01 安徽美晟生态林业开发有限公司 A multistage filter equipment for tea-seed oil squeezes is convenient for change filter screen

Similar Documents

Publication Publication Date Title
CN207958104U (en) A kind of equipment for separating liquid from solid of livestock and poultry feces
CN209649547U (en) A kind of wiring board stripping machine dry film slag collection device
CN211999153U (en) Improved micro-power sewage filtering device
CN114308860B (en) Water washing device for producing phosphogypsum and application method thereof
CN210021502U (en) Multilayer formula filter equipment is used in paint processing
CN210635777U (en) Sewage treatment is sediment device for equipment
CN107098409A (en) A kind for the treatment of tank mud scum slag collection side removal device
CN208517259U (en) A kind of activated sludge desiccation apparatus
CN201799149U (en) Belt sewage filter
CN216605404U (en) A agricultural waste processing apparatus for fertilizer preparation
CN202685342U (en) Solid-liquid separator
CN109351010A (en) A kind of novel extrusion filter and method
CN209286759U (en) A kind of novel extrusion filter
CN209260177U (en) A kind of zinc residue produced in hot zinc plating strainer
CN209376492U (en) A kind of aquaculture pond water surface suspension collecting device
CN209033900U (en) A kind of full-automatic hydraulic screen formula solid-liquid separating equipment
CN207672107U (en) With the aluminium slag separator for scraping off structure
CN207786354U (en) A kind of liquid chromatogram eluent mocromembrane filter device
CN207412881U (en) A kind of pulp-water retracting device
CN208008489U (en) A kind of pretreatment unit of paper waste
CN216297921U (en) Be used for aluminium ingot processing to use high-efficient cooling device
CN111097730A (en) Maize seed vibration conveyor with dust removal feeder hopper
CN207384986U (en) A kind of vertical standing drainage bucket
CN219003920U (en) Movable coal washing equipment
CN213558851U (en) Pharmaceutical engineering is with throwing material device

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant