CN112024490B - Efficient round crystal bar lifting dust removing equipment - Google Patents
Efficient round crystal bar lifting dust removing equipment Download PDFInfo
- Publication number
- CN112024490B CN112024490B CN202010899775.2A CN202010899775A CN112024490B CN 112024490 B CN112024490 B CN 112024490B CN 202010899775 A CN202010899775 A CN 202010899775A CN 112024490 B CN112024490 B CN 112024490B
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- China
- Prior art keywords
- chain
- assembly
- component
- dust removing
- spraying
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- 239000000428 dust Substances 0.000 title claims abstract description 63
- 239000013078 crystal Substances 0.000 title claims abstract description 47
- 239000007921 spray Substances 0.000 claims abstract description 33
- 229920000742 Cotton Polymers 0.000 claims abstract description 32
- 238000005507 spraying Methods 0.000 claims abstract description 32
- 239000004744 fabric Substances 0.000 claims abstract description 22
- 230000003287 optical effect Effects 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 230000002146 bilateral effect Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 3
- 230000005484 gravity Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- 238000005457 optimization Methods 0.000 description 4
- 239000011863 silicon-based powder Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
- B08B1/32—Cleaning by methods involving the use of tools by movement of cleaning members over a surface using rotary cleaning members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/14—Wipes; Absorbent members, e.g. swabs or sponges
- B08B1/143—Wipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
Landscapes
- Cleaning In General (AREA)
Abstract
The invention discloses efficient lifting dust removal equipment for a round crystal bar, which comprises a frame assembly, a dust removal assembly, a balance assembly and a spray assembly. The dust removal assembly is arranged at the middle position of the frame assembly, and has wiping effect on the crystal bars. The balance component is connected with the dust removal component and used for adjusting the position of the cotton cloth wheel. The spray assemblies are arranged on two sides of the dust removal assembly and are used for cleaning the crystal bars. The crystal bar flows through the assembly line to be in contact with the cotton cloth wheel, and meanwhile, an upward component force is given to the cotton cloth wheel under the action of the pushing force of the assembly line, and under the action of the balance component, the upward force of the cotton cloth wheel is larger than the gravity of the crystal bar, so that the cotton cloth wheel floats up and down along the surface of the crystal bar, the spray component is always in a water spraying state, and therefore the crystal bar flows through the lifting type dust removing equipment, and surface dust removal is completed. High-efficiency surface dust removing process. The high-efficiency lifting type round crystal bar dust removing device has the advantages of simple structure, high dust removing speed and good dust removing effect.
Description
Technical Field
The invention relates to crystal bar dust removal equipment in the field of photovoltaics, in particular to efficient round crystal bar lifting dust removal equipment.
Background
After the crystal bar is pulled in a single crystal growth workshop, a long crystal bar with the length of about 5m is cut into the length of 600-900 mm by a cutter, and then the length is conveyed to a squaring machine by a production line to carry out line cutting and surface grinding, and before the crystal bar enters the squaring machine, the cut crystal bar needs to be cleaned, because a small amount of powdery silicon powder is remained on the upper surface of the crystal bar in the cutting procedure, and the silicon powder can influence the later parameter detection.
The multi-station high-pressure water gun is adopted at present to wash the surface of the crystal bar, the water gun is scattering, most silicon powder can be removed, but part of residual silicon powder still exists, the crystal bar cannot be cleaned, the subsequent process requirement cannot have silicon powder residue, after test, the crystal bar is cleaned once, the crystal bar can be completely cleaned, but the crystal bar moves on a production line, the production beat can be influenced when the crystal bar stops to remove dust specially, the production efficiency is reduced, and the cut crystal bar cannot be stopped.
Disclosure of Invention
The invention aims to solve the technical problem that a silicon rod cannot be cleaned in the prior art, and provides efficient round crystal rod lifting dust removing equipment.
The invention realizes the above purpose through the following technical scheme: an efficient round crystal bar lifting dust removal device, wherein: the device comprises a frame component, a dust removal component, a balance component and a spray component, wherein the dust removal component, the balance component and the spray component are all arranged on the frame component, the dust removal component is arranged at a nozzle of the spray component, and two ends of the dust removal component are respectively connected to the balance component;
The dust removing assembly comprises a cotton cloth wheel, a first linear bearing, a second linear bearing, a first optical axis, a driving motor, a motor seat, a chain installation block and a second optical axis, wherein the driving motor is installed on the motor seat;
The balance component consists of a left adjusting piece, a right adjusting piece and a steering shaft, and the left adjusting piece is connected with the right adjusting piece through the steering shaft;
The spraying assembly consists of a spraying pipe, a spraying connector, a spraying plug and a spraying mounting seat, wherein the spraying mounting seat is arranged on the spraying pipe, the spraying pipe is arranged on the frame assembly through the spraying mounting seat, the spraying plug is arranged at one end of the spraying pipe, and the spraying connector is arranged at the other end of the spraying pipe;
the left adjusting piece comprises a left counterweight, a left counterweight chain, a left balance chain, a left chain wheel and a left adjusting chain wheel, wherein the left chain wheel and the left adjusting chain wheel are respectively arranged on the frame component up and down, the left counterweight is connected with one end of the left counterweight chain, the other end of the left counterweight chain is fixed on the upper top surface of the second linear bearing through a steering shaft and the left chain wheel, and the two ends of the left balance chain are respectively fixed on the upper top surface and the lower bottom surface of the second linear bearing and are connected with the left chain wheel, the left adjusting chain wheel and the steering shaft;
The right regulating part comprises a right counterweight, a right counterweight chain, a right balance chain, a right sprocket and a right regulating sprocket, wherein the right sprocket and the right regulating sprocket are respectively arranged on the frame component from top to bottom, the right counterweight is connected with one end of the right counterweight chain, the other end of the right counterweight chain is fixed on the upper top surface of the motor base through a steering shaft and the right sprocket, and two ends of the right balance chain are respectively fixed on the upper top surface and the lower bottom surface of the motor base and are connected with the right sprocket, the right regulating sprocket and the steering shaft.
As a further optimization scheme of the invention, the left adjusting piece and the right adjusting piece are of a bilateral symmetry structure.
As a further optimization scheme of the invention, the left adjusting piece comprises a left counterweight, a left counterweight chain, a left chain wheel and a left adjusting chain wheel, wherein the left chain wheel and the left adjusting chain wheel are respectively arranged on the frame component up and down, the left counterweight is connected with one end of the left counterweight chain, the other end of the left counterweight chain is fixed on the upper top surface of the second linear bearing through a steering shaft and the left chain wheel, and the two ends of the left counterweight chain are respectively fixed on the upper top surface and the lower bottom surface of the second linear bearing and are connected with the left chain wheel, the left adjusting chain wheel and the steering shaft.
As a further optimization scheme of the invention, the right adjusting piece comprises a right counterweight, a right counterweight chain, a right sprocket and a right adjusting sprocket, wherein the right sprocket and the right adjusting sprocket are respectively arranged on the frame component up and down, the right counterweight is connected with one end of the right counterweight chain, the other end of the right counterweight chain is fixed on the upper top surface of the motor base through a steering shaft and the right sprocket, and two ends of the right counterweight chain are respectively fixed on the upper top surface and the lower bottom surface of the motor base and are connected with the right sprocket, the right adjusting sprocket and the steering shaft.
As a further optimization scheme of the invention, the dust removing assembly further comprises a mounting plate, and the dust removing assembly is mounted on the frame assembly through the mounting plate.
The beneficial effects of the invention are as follows:
through setting up balanced subassembly, realized cotton wheel both ends and can rise and fall in step, solved cotton wheel one end jack-up, the problem of other end not jack-up.
Through set up the subassembly that sprays in the both sides of cotton wheel, to cotton wheel sustainable flushing, increased the life cycle of cotton wheel.
The first linear bearing and the second linear bearing are arranged, so that crystal bars with different sizes can be cleaned.
Drawings
FIG. 1 is a schematic structural view of a high-efficiency lifting type round crystal bar dust removing device;
FIG. 2 is a schematic diagram of a frame assembly of the high-efficiency round crystal bar lifting dust removing device;
FIG. 3 is a schematic view of a dust removing assembly of the high-efficiency lifting type round crystal bar dust removing device;
FIG. 4 is a schematic diagram of a balance assembly of the high-efficiency round crystal bar lifting dust removing device;
FIG. 5 is a schematic diagram of a spray assembly of the high-efficiency round crystal bar lifting dust removal device;
FIG. 6 is a side view of the high efficiency round ingot lifting dust removal apparatus of the present invention in operation;
The dust removal device comprises a frame assembly, a 2-dust removal assembly, a 3-balance assembly, a 4-spray assembly, a 11-end support, a 12-connecting rod, a 13-foot cup, a 14-fixed foot, a 21-cotton cloth wheel, a 22-linear bearing I, a 23-linear bearing II, a 24-optical axis I, a 25-driving motor, a 26-motor seat, a 27-chain installation seat, a 28-optical axis II, a 29-installation plate, a 31-left adjustment member, a 32-right adjustment member, a 33-steering shaft, a 41-spray pipe, a 42-spray joint, a 43-spray plug, a 44-spray installation seat, a 311-left counterweight, a 312-left counterweight chain, a 313-counterweight chain, a 314-left sprocket, a 315-left adjustment sprocket, a 321-right counterweight, a 322-right counterweight chain, a 323-right balance chain, a 324-right sprocket and a 325-right adjustment sprocket.
Detailed Description
The present application will be described in further detail with reference to the accompanying drawings, wherein it is to be understood that the following detailed description is for the purpose of further illustrating the application only and is not to be construed as limiting the scope of the application, as various insubstantial modifications and adaptations of the application to those skilled in the art can be made in light of the foregoing disclosure.
Examples
The efficient crystal bar lifting dust removing equipment shown in fig. 1 comprises a frame component 1, a dust removing component 2, a balancing component 3 and a spraying component 4, wherein the dust removing component 2, the balancing component 3 and the spraying component 4 are all arranged on the frame component 1, the dust removing component 2 is arranged at a water spraying port of the spraying component 4, and two ends of the dust removing component 2 are respectively connected to the balancing component 3.
As shown in fig. 2, the frame assembly 1 includes an end support 11, a connecting rod 12, a foot cup 13 and a fixing foot 14, the connecting rod 12 and the end support 11 are connected by screws to form a frame, the foot cup 13 is used for adjusting the height of the whole frame assembly 1 to adapt to the requirements of different crystal rod diameters, and the fixing foot 14 is used for fixing the whole frame assembly 1 to prevent tipping under the action of the pushing force of the crystal rod.
As shown in fig. 3, the dust removing assembly 2 is mounted at the middle position of the frame assembly 1, the dust removing assembly 2 is composed of a first linear bearing 22 of the cotton cloth wheel 21, a second linear bearing 23, a first optical axis 24, a driving motor 25, a motor seat 26, a chain mounting block 27 and a second optical axis 28, the driving motor 25 is mounted on the motor seat 26, the motor seat 26 is mounted on the first linear bearing 22, the first linear bearing 22 is slidably mounted on the first optical axis 24, the output end of the driving motor 25 passes through the motor seat 26 to be in transmission connection with one end of the cotton cloth wheel 21, the other end of the cotton cloth wheel 21 is mounted on the second linear bearing 23, the second linear bearing 23 is slidably mounted on the second optical axis 28, and the chain mounting block 27 is mounted on the upper top surface and the lower bottom surface of the motor seat 26 and the upper top surface and the lower bottom surface of the first linear bearing 22. The cotton wheel 21 rotates under the action of the driving motor 25, so that a better wiping effect is achieved on the crystal bar. The cotton wheel 21, the first linear bearing 22, the second linear bearing 23, the driving motor 25, the motor seat 26 and the chain installation block 27 move up and down along the first optical axis 24 and the second optical axis 28, when the crystal bar is propped against the cotton wheel 21, the dust removing assembly 2 moves upwards, and when the crystal bar leaves, the dust removing assembly 2 falls down. The crystal bars on the production line continuously pass through and leave the dust removing assembly 2, and the dust removing assembly 2 continuously rises and falls. The dust removal assembly 2 further comprises a mounting plate 29, and the dust removal assembly 2 is mounted on the frame assembly 1 by means of the mounting plate 29.
As shown in fig. 4, the balance assembly 3 is used for adjusting the cotton wheel 21 to prevent the cotton wheel from tilting, and the balance assembly 3 is composed of a left adjusting member 31, a right adjusting member 32, and a steering shaft 33, wherein the left adjusting member 31 and the right adjusting member 32 are connected through the steering shaft 33.
As shown in fig. 5, the spray assembly 4 is composed of a spray pipe 41, a spray joint 42, a spray plug 43 and a spray mounting seat 44, the spray mounting seat 44 is mounted on the spray pipe 41, the spray pipe 41 is mounted on the frame assembly 1 through the spray mounting seat 41, the spray plug 43 is arranged at one end of the spray pipe 41, and the spray joint 42 is arranged at the other end of the spray pipe 41.
The end of the spray joint 42 is one side for feeding clean water, is connected with a water source of about 0.1MPa, is sprayed to the cotton cloth wheel 21 on the dust removal assembly 2 through the small holes on the spray pipe 41, and is used for continuously flushing the cotton cloth wheel 21, so that the service cycle of the cotton cloth wheel 21 is prolonged.
As shown in fig. 6, when in use, the crystal bar flows through the lifting dust removing device on the production line to be in contact with the cotton cloth wheel 21, and meanwhile, under the action of the pushing force of the production line, the crystal bar gives the cotton cloth wheel 21 an upward component force, so that the upward force of the cotton cloth wheel 21 is greater than the gravity of the self gravity and the counterweight, the cotton cloth wheel 21 floats up and down along the surface of the crystal bar, the spray pipe 41 of the spray assembly 4 is always in a water spraying state, and therefore, the crystal bar flows through the lifting dust removing device, and the surface dust removing is finished.
Examples
The difference between the efficient lifting type dust removing device for a crystal ingot in embodiment 1 is that, as shown in fig. 4, the left adjusting member 31 is mounted on the side without the driving motor, and includes a left counterweight 311, a left counterweight chain 312, a left counterweight chain 313, a left sprocket 314, and a left adjusting sprocket 315, the left sprocket 314 and the left adjusting sprocket 315 are respectively disposed on the frame assembly 1 up and down, the left counterweight 311 is connected to one end of the left counterweight chain 312, the other end of the left counterweight chain 312 is fixed to the upper top surface of the second linear bearing 23 via the steering shaft 33 and the left sprocket 314, and both ends of the left counterweight chain 313 are respectively fixed to the upper top surface and the lower bottom surface of the second linear bearing 23, and connect the left sprocket 314, the left adjusting sprocket 315 and the steering shaft 33.
The right regulating part 32 is installed in driving motor one side, including right counter weight 321, right counter weight chain 322, right counter weight chain 323, right sprocket 324, right regulation sprocket 325 set up respectively from top to bottom on rack assembly 1, right counter weight 321 connects in the one end of right counter weight chain 322, the other end of right counter weight chain 322 is fixed in the upper top surface of motor cabinet 26 through steering shaft 33, right sprocket 324, the both ends of right counter weight chain 323 are fixed in the upper top surface and the lower bottom surface of motor cabinet 26 respectively, and connect right sprocket 324, right regulation sprocket 325 and steering shaft 33.
Because the length of the crystal bar is mostly about 600-900 mm, the length is respectively lower than the value and is 200-300 mm, and the position is deviated to one end, the situation that one end of the cotton cloth wheel 21 is jacked up and the other end is not jacked up is caused, after the left balance chain 313 and the right balance chain 323 are added, the two ends can be synchronously lifted up and fall down, and the problem that one end of the cotton cloth wheel is jacked up and the other end is not jacked up is solved.
The above examples are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the spirit and scope of the present invention. Various modifications and improvements of the technical scheme of the present invention will fall within the protection scope of the present invention without departing from the design concept of the present invention, and the technical content of the present invention is fully described in the claims.
Claims (3)
1. An efficient round crystal bar lifting dust collecting device which is characterized in that: the dust removing device comprises a frame component (1), a dust removing component (2), a balance component (3) and a spray component (4), wherein the dust removing component (2), the balance component (3) and the spray component (4) are all arranged on the frame component (1), the dust removing component (2) is arranged at a nozzle of the spray component (4), and two ends of the dust removing component (2) are respectively connected to the balance component (3);
The dust removing assembly (2) comprises a cotton cloth wheel (21), a first linear bearing (22), a second linear bearing (23), a first optical axis (24), a driving motor (25), a motor base (26), a chain installation block (27) and a second optical axis (28), wherein the driving motor (25) is installed on the motor base (26), the motor base (26) is installed on the first linear bearing (22), the first linear bearing (22) is slidably installed on the first optical axis (24), the output end of the driving motor (25) penetrates through the motor base (26) to be in transmission connection with one end of the cotton cloth wheel (21), the other end of the cotton cloth wheel (21) is installed on the second linear bearing (23), the second linear bearing (23) is slidably installed on the second optical axis (28), and the chain installation block (27) is installed on the upper top surface and the lower bottom surface of the motor base (26) and the upper top surface and the lower bottom surface of the first linear bearing (22);
the balance assembly (3) consists of a left adjusting piece (31), a right adjusting piece (32) and a steering shaft (33), wherein the left adjusting piece (31) is connected with the right adjusting piece (32) through the steering shaft (33);
The spraying assembly (4) consists of a spraying pipe (41), a spraying connector (42), a spraying plug (43) and a spraying installation seat (44), wherein the spraying installation seat (44) is installed on the spraying pipe (41), the spraying pipe (41) is installed on the frame assembly (1) through the spraying installation seat (44), the spraying plug (43) is arranged at one end of the spraying pipe (41), and the spraying connector (42) is arranged at the other end of the spraying pipe (41);
The left adjusting piece (31) comprises a left counterweight (311), a left counterweight chain (312), a left counterweight chain (313), a left chain wheel (314) and a left adjusting chain wheel (315), wherein the left chain wheel (314) and the left adjusting chain wheel (315) are respectively arranged on the frame component (1) up and down, the left counterweight (311) is connected with one end of the left counterweight chain (312), the other end of the left counterweight chain (312) is fixed on the upper top surface of the linear bearing II (23) through a steering shaft (33) and the left chain wheel (314), and two ends of the left counterweight chain (313) are respectively fixed on the upper top surface and the lower bottom surface of the linear bearing II (23) and are connected with the left chain wheel (314), the left adjusting chain wheel (315) and the steering shaft (33);
Right regulating part (32) are including right counter weight (321), right counter weight chain (322), right counter weight chain (323), right sprocket (324), right regulating sprocket (325) set up respectively from top to bottom on rack assembly (1), right counter weight (321) are connected in the one end of right counter weight chain (322), the other end of right counter weight chain (322) is fixed in the last top surface of motor cabinet (26) through steering spindle (33), right sprocket (324), the both ends of right counter weight chain (323) are fixed in the last top surface and the lower bottom surface of motor cabinet (26) respectively, and connect right sprocket (324), right regulating sprocket (325) and steering spindle (33).
2. The efficient round ingot lifting dust removal apparatus of claim 1, wherein: the left adjusting piece (31) and the right adjusting piece (32) are of a bilateral symmetry structure.
3. The efficient round ingot lifting dust removal apparatus of claim 1, wherein: the dust removal assembly (2) further comprises a mounting plate (29), and the dust removal assembly (2) is mounted on the frame assembly through the mounting plate (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010899775.2A CN112024490B (en) | 2020-08-31 | 2020-08-31 | Efficient round crystal bar lifting dust removing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010899775.2A CN112024490B (en) | 2020-08-31 | 2020-08-31 | Efficient round crystal bar lifting dust removing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112024490A CN112024490A (en) | 2020-12-04 |
| CN112024490B true CN112024490B (en) | 2024-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010899775.2A Active CN112024490B (en) | 2020-08-31 | 2020-08-31 | Efficient round crystal bar lifting dust removing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112024490B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102711387A (en) * | 2012-06-11 | 2012-10-03 | 特新电子机械设备（东莞）有限公司 | Board surface cleaning machine |
| CN207057070U (en) * | 2017-06-21 | 2018-03-02 | 海润光伏科技股份有限公司 | A kind of automatic cull cleaning plant of crystal bar |
| CN110202709A (en) * | 2019-07-09 | 2019-09-06 | 深圳市雯逸水晶有限公司 | A kind of adjustable cutting washing degumming device of single crystal product article |
| CN209565297U (en) * | 2019-01-31 | 2019-11-01 | 宁夏银和半导体科技有限公司 | Cleaning device after crystal bar slice |
| CN212733215U (en) * | 2020-08-31 | 2021-03-19 | 杭州中为光电技术有限公司 | Efficient crystal bar lifting type dust removal equipment |
-
2020
- 2020-08-31 CN CN202010899775.2A patent/CN112024490B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102711387A (en) * | 2012-06-11 | 2012-10-03 | 特新电子机械设备（东莞）有限公司 | Board surface cleaning machine |
| CN207057070U (en) * | 2017-06-21 | 2018-03-02 | 海润光伏科技股份有限公司 | A kind of automatic cull cleaning plant of crystal bar |
| CN209565297U (en) * | 2019-01-31 | 2019-11-01 | 宁夏银和半导体科技有限公司 | Cleaning device after crystal bar slice |
| CN110202709A (en) * | 2019-07-09 | 2019-09-06 | 深圳市雯逸水晶有限公司 | A kind of adjustable cutting washing degumming device of single crystal product article |
| CN212733215U (en) * | 2020-08-31 | 2021-03-19 | 杭州中为光电技术有限公司 | Efficient crystal bar lifting type dust removal equipment |
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| Publication number | Publication date |
|---|---|
| CN112024490A (en) | 2020-12-04 |
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