CN112246413A - Stone crusher discharge gate with automatic filtration function - Google Patents

Stone crusher discharge gate with automatic filtration function Download PDF

Info

Publication number
CN112246413A
CN112246413A CN202011115406.6A CN202011115406A CN112246413A CN 112246413 A CN112246413 A CN 112246413A CN 202011115406 A CN202011115406 A CN 202011115406A CN 112246413 A CN112246413 A CN 112246413A
Authority
CN
China
Prior art keywords
fixedly connected
bevel gear
box body
stone crusher
rod
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.)
Pending
Application number
CN202011115406.6A
Other languages
Chinese (zh)
Inventor
张建威
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.)
Xiangxiang Wangda Conveying Equipment Manufacturing Co ltd
Original Assignee
Xiangxiang Wangda Conveying Equipment Manufacturing 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 Xiangxiang Wangda Conveying Equipment Manufacturing Co ltd filed Critical Xiangxiang Wangda Conveying Equipment Manufacturing Co ltd
Priority to CN202011115406.6A priority Critical patent/CN112246413A/en
Publication of CN112246413A publication Critical patent/CN112246413A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/08Separating or sorting of material, associated with crushing or disintegrating
    • B02C23/10Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00Crushing or disintegrating by roller mills
    • B02C4/02Crushing or disintegrating by roller mills with two or more rollers
    • B02C4/08Crushing or disintegrating by roller mills with two or more rollers with co-operating corrugated or toothed crushing-rollers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00Crushing or disintegrating by roller mills
    • B02C4/28Details
    • B02C4/42Driving mechanisms; Roller speed control
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/28Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
    • B07B1/34Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens jigging or moving to-and-fro perpendicularly or approximately perpendiculary to the plane of the screen
    • B07B1/343Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens jigging or moving to-and-fro perpendicularly or approximately perpendiculary to the plane of the screen with mechanical drive elements other than electromagnets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/42Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Crushing And Grinding (AREA)

Abstract

The invention discloses a discharge port of a stone crusher with an automatic filtering function, relates to the field of discharge ports, and aims to solve the problems that the conventional discharge port of the stone crusher is inconvenient to filter and cannot perform secondary crushing on larger stone materials after filtering. The invention not only facilitates the discharging of the stone crusher, but also facilitates the automatic filtering of crushed stones, the secondary crushing of larger stones, the automatic operation and the improvement of the working efficiency.

Description

Stone crusher discharge gate with automatic filtration function
Technical Field
The invention relates to the field of discharge ports, in particular to a discharge port of a stone crusher with an automatic filtering function.
Background
The stone crusher can be classified into a medical stone crusher and a mining stone crusher according to the major categories. The mining stone crusher is suitable for crushing massive mine hard rocks in principle, has the highest compressive strength of 350 MPa, and has the advantages of large crushing ratio, cubic particles of crushed materials and the like. The mining stone crushing machine is a crushing machine with the particle size of more than three millimeters accounting for more than 50 percent of the total discharge amount in the discharged materials. The discharge port of the traditional stone crusher is inconvenient to filter, and can not carry out secondary crushing on larger stones after filtering, so that the discharge port of the stone crusher with the automatic filtering function is provided.
Disclosure of Invention
The discharge hole of the stone crusher with the automatic filtering function solves the problems that the discharge hole of the existing stone crusher is inconvenient to filter and can not carry out secondary crushing on larger stones after filtering.
In order to achieve the purpose, the invention adopts the following technical scheme:
a stone crusher discharge port with an automatic filtering function comprises a box body, wherein a first fixing rod is fixedly connected to the outer wall of the right side of the box body, a motor is fixedly connected to the right end of the first fixing rod, a screw rod is fixedly connected to an output shaft of the motor, a first bevel gear is fixedly sleeved outside the screw rod, a second bevel gear is fixedly connected to the bottom end of the screw rod, a lifting rod is sleeved outside a thread of the screw rod, a through hole is formed in the left side of the box body, a sliding groove is formed in the back face of the through hole, a filtering plate is movably sleeved inside the sliding groove, a first bearing is fixedly sleeved on two sides of the box body, a first rotating shaft is fixedly sleeved inside the first bearing, a third bevel gear is fixedly connected to the right end of the first rotating shaft and is in meshing transmission with the first bevel gear, two vibrating wheels, the fixed cover in both sides of box is equipped with two second bearings, two the fixed cover in inside of second bearing is equipped with the second pivot, the right-hand member fixedly connected with fourth bevel gear of second pivot, fourth bevel gear and second bevel gear meshing transmission, the fixed cover in outside of second pivot is equipped with two fifth bevel gears, the left side fixedly connected with regrinding case of box, the back of regrinding case rotates and is connected with two rolls roller, two the equal fixedly connected with sixth bevel gear in front of rolling roller, two sixth bevel gear and two fifth bevel gear meshing transmission.
Preferably, the bottom of the secondary crushing box and the bottom of the box body are fixedly connected with a guide pipe, a collecting box is arranged below the guide pipe, and the vertical section of the collecting box is of a U-shaped structure.
Preferably, the top end of the box body is fixedly connected with a sliding-in pipe, and the first fixing rod is connected with the motor through a bolt.
Preferably, the right side outer wall fixedly connected with second dead lever of box, the top fixedly connected with guide bar of second dead lever, the guiding hole has been seted up to the inside of lifter, the guide bar runs through the guiding hole.
Preferably, the top of the second fixing rod is fixedly connected with a spring, and the spring is movably sleeved outside the screw rod.
Preferably, the right side of the box body is provided with a lifting groove, and the filter plate is movably sleeved inside the lifting groove.
Compared with the prior art, the invention has the beneficial effects that: the invention adopts the structure of installing a box body, a motor, a screw rod, a lifting rod, a chute, a filter plate, a first rotating shaft, a vibrating wheel, a second rotating shaft, a secondary crushing box, a grinding roller guide pipe, a collecting box, a sliding-in pipe and the like, wherein the first rotating shaft drives the two vibrating wheels to rotate so as to vibrate and filter stone on the filter plate, the first rotating shaft drives the two vibrating wheels to rotate, thereby vibrating and filtering the stone on the filter plate, the second rotating shaft drives the two fifth bevel gears to be meshed and driven with the two sixth bevel gears, thereby driving the two grinding rollers to rotate, and further carrying out secondary grinding on larger stones, the device has novel design and simple operation, not only facilitates the discharging of the stone crusher, but also facilitates the automatic filtration of the ground stones, and the secondary crushing of larger stones is facilitated, the automatic operation is realized, and the working efficiency is improved.
Drawings
FIG. 1 is a schematic front view of a discharge port of a stone crusher with an automatic filtering function according to the present invention;
fig. 2 is a schematic structural diagram of a lifting rod with an automatic filtering function for a discharge hole of a stone crusher in a front view in a working state.
In the figure: the device comprises a box body 1, a motor 2, a screw rod 3, a first bevel gear 4, a second bevel gear 5, a lifting rod 6, a sliding chute 7, a filter plate 8, a first rotating shaft 9, a third bevel gear 10, a vibrating wheel 11, a second rotating shaft 12, a fourth bevel gear 13, a fifth bevel gear 14, a secondary crushing box 15, a rolling roller 16, a sixth bevel gear 17, a guide pipe 18, a collecting box 19 and a sliding-in pipe 20.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-2, the present solution provides an embodiment: a discharge port of a stone crusher with an automatic filtering function comprises a box body 1, a first fixing rod is fixedly connected to the outer wall of the right side of the box body 1, a motor 2 is fixedly connected to the right end of the first fixing rod, a screw 3 is fixedly connected to an output shaft of the motor 2, a first bevel gear 4 is fixedly sleeved outside the screw 3, a second bevel gear 5 is fixedly connected to the bottom end of the screw 3, a lifting rod 6 is sleeved outside threads of the screw 3, a through hole is formed in the left side of the box body 1, a sliding groove 7 is formed in the back surface of the through hole, a filtering plate 8 is movably sleeved inside the sliding groove 7, a first bearing is fixedly sleeved on two sides of the box body 1, a first rotating shaft 9 is fixedly sleeved inside the first bearing, a third bevel gear 10 is fixedly connected to the right end of the first rotating shaft 9, the third bevel gear 10 is in meshing transmission with the, the fixed cover in both sides of box 1 is equipped with two second bearings, the inside fixed cover of two second bearings is equipped with second pivot 12, the right-hand member fixedly connected with fourth bevel gear 13 of second pivot 12, fourth bevel gear 13 and the meshing transmission of second bevel gear 5, the fixed cover in outside of second pivot 12 is equipped with two fifth bevel gears 14, the left side fixedly connected with regrinding case 15 of box 1, the back of regrinding case 15 rotates and is connected with two rolls roller 16, the equal fixedly connected with sixth bevel gear 17 in front of two rolls roller 16, two sixth bevel gears 17 and the meshing transmission of two fifth bevel gears 14.
In this embodiment, the duct 18 is fixedly connected to the bottoms of the secondary crushing box 15 and the box body 1, the collecting box 19 is arranged below the duct 18, and the vertical section of the collecting box 19 is of a U-shaped structure.
In this embodiment, the top end of the box 1 is fixedly connected with the slide-in pipe 20, and the first fixing rod is connected with the motor 2 through a bolt.
In this embodiment, the right side outer wall fixedly connected with second dead lever of box 1, the top fixedly connected with guide bar of second dead lever, the guiding hole has been seted up to the inside of lifter 6, and the guide bar runs through the guiding hole.
In this embodiment, the top of the second fixing rod is fixedly connected with a spring, and the spring is movably sleeved outside the screw rod 3.
In this embodiment, the right side of the box body 1 is provided with a lifting groove, and the filter plate 8 is movably sleeved inside the lifting groove.
The working principle is that firstly crushed stones are put in from the slide-in pipe 20, the motor 2 is started, the output shaft of the motor 2 drives the screw rod 3 to rotate, the screw rod 3 drives the first bevel gear 4 to be meshed with the third bevel gear 10 for transmission, thereby driving the first rotating shaft 9 to rotate, the first rotating shaft 9 drives the two vibrating wheels 11 to rotate, thereby vibrating and filtering stones on the filter plate 8, smaller stones fall into the collecting box 19 through the guide pipe 18, larger stones are retained on the filter plate 8, when the stones on the filter plate 8 reach a certain amount, the motor 2 rotates reversely, the output shaft of the motor 2 drives the screw rod 3 to rotate reversely, the screw rod 3 drives the lifting rod 6 to move upwards, thereby driving the filter plate 8 to incline, thereby large stones on the filter plate 8 fall into the secondary crushing box 15, then the second bevel gear 5 is meshed with the fourth bevel gear 13 for transmission, thereby driving the second rotating shaft 12 to rotate, the second pivot 12 drives two fifth bevel gears 14 and two sixth bevel gears 17 meshing transmission, thereby drive two and roll roller 16 and rotate, thereby carry out the regrinding to great building stones, later the regrinding building stones also through passing through pipe 18, fall into collecting box 19, accomplish automatic collection and regrinding, this device has not only made things convenient for the ejection of compact of stone crusher, still made things convenient for the building stones after smashing to carry out the automatic filtration, and made things convenient for and carried out the regrinding to great building stones, automatic operation, and work efficiency is improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (6)

1. A stone crusher discharge port with an automatic filtering function comprises a box body (1) and is characterized in that a first fixing rod is fixedly connected to the outer wall of the right side of the box body (1), a motor (2) is fixedly connected to the right end of the first fixing rod, a screw rod (3) is fixedly connected to an output shaft of the motor (2), a first bevel gear (4) is fixedly sleeved on the outer portion of the screw rod (3), a second bevel gear (5) is fixedly connected to the bottom end of the screw rod (3), a lifting rod (6) is sleeved on the outer portion of the screw rod (3), a through hole is formed in the left side of the box body (1), a sliding groove (7) is formed in the back face of the through hole, a filter plate (8) is movably sleeved on the inner portion of the sliding groove (7), a first bearing is fixedly sleeved on the two sides of the box body (1), the right end of the first rotating shaft (9) is fixedly connected with a third bevel gear (10), the third bevel gear (10) is in meshing transmission with the first bevel gear (4), the outer part of the first rotating shaft (9) is fixedly sleeved with two vibrating wheels (11), two second bearings are fixedly sleeved on two sides of the box body (1), a second rotating shaft (12) is fixedly sleeved on the inner part of the two second bearings, the right end of the second rotating shaft (12) is fixedly connected with a fourth bevel gear (13), the fourth bevel gear (13) is in meshing transmission with the second bevel gear (5), the outer part of the second rotating shaft (12) is fixedly sleeved with two fifth bevel gears (14), the left side of the box body (1) is fixedly connected with a secondary crushing box (15), the back of the secondary crushing box (15) is rotatably connected with two rolling rollers (16), and the front of the two rolling rollers (16) is fixedly connected with a sixth bevel gear (17), the two sixth bevel gears (17) are in meshed transmission with the two fifth bevel gears (14).
2. The discharge hole of the stone crusher with the automatic filtering function as claimed in claim 1, wherein a conduit (18) is fixedly connected with the bottoms of the secondary crushing box (15) and the box body (1), a collecting box (19) is arranged below the conduit (18), and the vertical section of the collecting box (19) is of a U-shaped structure.
3. The discharging hole of the stone crusher with the automatic filtering function as claimed in claim 1, wherein a sliding-in pipe (20) is fixedly connected to the top end of the box body (1), and the first fixing rod is connected with the motor (2) through a bolt.
4. The discharging hole of the stone crusher with the automatic filtering function as claimed in claim 1, wherein a second fixing rod is fixedly connected to the outer wall of the right side of the box body (1), a guide rod is fixedly connected to the top of the second fixing rod, a guide hole is formed in the lifting rod (6), and the guide rod penetrates through the guide hole.
5. The discharging hole of the stone crusher with the automatic filtering function as claimed in claim 4, wherein a spring is fixedly connected to the top of the second fixing rod, and the spring is movably sleeved outside the screw rod (3).
6. The discharge hole of the stone crusher with the automatic filtering function as claimed in claim 1, wherein a lifting groove is formed on the right side of the box body (1), and the filter plate (8) is movably sleeved in the lifting groove.
CN202011115406.6A 2020-10-19 2020-10-19 Stone crusher discharge gate with automatic filtration function Pending CN112246413A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011115406.6A CN112246413A (en) 2020-10-19 2020-10-19 Stone crusher discharge gate with automatic filtration function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011115406.6A CN112246413A (en) 2020-10-19 2020-10-19 Stone crusher discharge gate with automatic filtration function

Publications (1)

Publication Number Publication Date
CN112246413A true CN112246413A (en) 2021-01-22

Family

ID=74245270

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011115406.6A Pending CN112246413A (en) 2020-10-19 2020-10-19 Stone crusher discharge gate with automatic filtration function

Country Status (1)

Country Link
CN (1) CN112246413A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117483046A (en) * 2023-11-27 2024-02-02 华能左权煤电有限责任公司 Multi-stage classified discharging coal crushing equipment for thermal power plant

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090016079A (en) * 2007-08-10 2009-02-13 권수길 Sand and gravel a manufacturing device
CN209631305U (en) * 2019-02-14 2019-11-15 许丽娟 A kind of corn processing circulation crusher
CN209791695U (en) * 2019-09-25 2019-12-17 伍友叶 New forms of energy material environmental protection rubbing crusher
CN110665586A (en) * 2019-11-15 2020-01-10 湖南福千府生物科技有限公司 Raw material crusher is used in production of root of kudzu vine can
CN210701071U (en) * 2019-09-05 2020-06-09 广东宇晟建设工程有限公司 Fitment rubbish resourceful reuse processing apparatus
CN111282651A (en) * 2020-03-31 2020-06-16 郑州美俊机械设备有限公司 Coal pulverizer with motor speed excessively slow warning function
CN111420749A (en) * 2020-04-23 2020-07-17 六安三创建筑材料有限公司 Building garbage recycling production equipment for brick sintering added as barren material
CN211160155U (en) * 2019-11-09 2020-08-04 江苏大和测控技术有限公司 Jaw crusher with weighing function
CN211216872U (en) * 2019-12-03 2020-08-11 黄觉如 Garbage crushing device for green building construction
CN111774133A (en) * 2019-04-04 2020-10-16 上海技盈电器有限公司 Reducing mechanism is used to converter machine case recovery

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090016079A (en) * 2007-08-10 2009-02-13 권수길 Sand and gravel a manufacturing device
CN209631305U (en) * 2019-02-14 2019-11-15 许丽娟 A kind of corn processing circulation crusher
CN111774133A (en) * 2019-04-04 2020-10-16 上海技盈电器有限公司 Reducing mechanism is used to converter machine case recovery
CN210701071U (en) * 2019-09-05 2020-06-09 广东宇晟建设工程有限公司 Fitment rubbish resourceful reuse processing apparatus
CN209791695U (en) * 2019-09-25 2019-12-17 伍友叶 New forms of energy material environmental protection rubbing crusher
CN211160155U (en) * 2019-11-09 2020-08-04 江苏大和测控技术有限公司 Jaw crusher with weighing function
CN110665586A (en) * 2019-11-15 2020-01-10 湖南福千府生物科技有限公司 Raw material crusher is used in production of root of kudzu vine can
CN211216872U (en) * 2019-12-03 2020-08-11 黄觉如 Garbage crushing device for green building construction
CN111282651A (en) * 2020-03-31 2020-06-16 郑州美俊机械设备有限公司 Coal pulverizer with motor speed excessively slow warning function
CN111420749A (en) * 2020-04-23 2020-07-17 六安三创建筑材料有限公司 Building garbage recycling production equipment for brick sintering added as barren material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117483046A (en) * 2023-11-27 2024-02-02 华能左权煤电有限责任公司 Multi-stage classified discharging coal crushing equipment for thermal power plant
CN117483046B (en) * 2023-11-27 2024-05-28 华能左权煤电有限责任公司 Multi-stage classified discharging coal crushing equipment for thermal power plant

Similar Documents

Publication Publication Date Title
CN107088465A (en) A kind of construction waste crushes recycle device
CN111940033A (en) Building waste retrieves reducing mechanism
CN110918180A (en) Waste material separation recovery unit who contains metalliferous material
CN112403639A (en) High-tech materials processing is with ceramic raw and other materials reducing mechanism
CN210729663U (en) Grinder that bulk drug processing was used
CN112246413A (en) Stone crusher discharge gate with automatic filtration function
CN214107151U (en) Raw material crushing device for metallurgical equipment
CN117244632A (en) Raw material crushing and grinding mechanism for sodium ion battery production
CN218637477U (en) Dust collector is smashed to building
CN109759216B (en) New-type multi-functional grit shredding device
CN212795383U (en) Waste concrete grinding and recycling system
CN214554278U (en) High-yield ore raw material processing device
CN214347053U (en) Cone crusher with dust keeper
CN215694256U (en) Mine ore crusher
CN114289107A (en) Powder grinding device based on commercial concrete production system
CN220737665U (en) Concrete crusher
CN112718049A (en) Remove stone machine degree of depth rubble device
CN214682196U (en) A ball mill for aerated concrete block production
CN213436286U (en) Crushing apparatus for recycling degraded materials
CN219003247U (en) Ball mill that dustproof effect is good
CN220345932U (en) Grinding device is smashed to raw materials convenient to material loading
CN216172637U (en) Rubbing crusher with energy-conserving effect
CN212189328U (en) Linkage type efficient ball mill
CN219334483U (en) Flour mill with quantitative feeding function
CN219784912U (en) Broken processing apparatus of leftover bits

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20210122

WD01 Invention patent application deemed withdrawn after publication