CN111389121A - Fresh air dust removal and purification device for isolation ward - Google Patents
Fresh air dust removal and purification device for isolation ward Download PDFInfo
- Publication number
- CN111389121A CN111389121A CN202010310698.2A CN202010310698A CN111389121A CN 111389121 A CN111389121 A CN 111389121A CN 202010310698 A CN202010310698 A CN 202010310698A CN 111389121 A CN111389121 A CN 111389121A
- Authority
- CN
- China
- Prior art keywords
- long screw
- nut
- thread
- screw rod
- sliding block
- 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.)
- Withdrawn
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
Abstract
The utility model provides an isolation ward new trend dust removal purifier, it mainly used is to the new trend purification among the isolation ward building air purification system of hospital, debris such as the dust of getting rid of in the air, flying wadding, particulate matter. The invention has simple structure, convenient and reliable use, easy maintenance and difficult occurrence of safety failure. The invention has the beneficial effects that: the long screw rod drives the nut and the suction nozzle to repeatedly move up and down under the condition that the steering directions of the three alternating current motors are kept unchanged all the time, and impurities on the filter screen cloth can be cleaned. The invention overcomes the problem that the motor is easy to damage due to long-term positive and negative rotation in the prior art, overcomes the problem that the contact of the travel switch is easy to ablate after long-term use, and overcomes the problems that the cost of a microcomputer and a direct current motor is high and the maintenance is difficult.
Description
Technical Field
The invention relates to the technical field of air purification, in particular to a fresh air dedusting and purifying device for an isolation ward, which is mainly used for carrying out primary purification on fresh air in an air purification system of an isolation ward building of a hospital to remove impurities such as dust, flying floc, particulate matters and the like in the air.
Background
With the development of the medical industry of China, the basic investment of China in the medical field is increased day by day, each large and three hospitals are provided with independent isolation ward buildings, all the isolation ward buildings adopt central ventilation and purification systems, and the first step in all the ventilation and purification systems is to primarily filter visible particles. However, at present, air pollution is serious, and especially seasonal wind sand, flying dust, plant floc and the like have great influence on primary filtration of a ventilation system. If the dust removal purification of the primary filtration does not reach the standard, the subsequent filtration, sterilization, bacteria, virus and other parts can be adversely affected. The less dust and bacteria in the isolation ward, the less the possibility of wound infection of the patient and the less the possibility of contaminated preparations and the influence of precision instruments. Therefore, the air purification process is directly related to the medical quality and the health of the patient. The air purification system of the isolation ward which is well built at present can provide safe and reliable working environment for medical workers, provides comfortable and convenient medical environment for patients, and provides pollution-free isolation environment for society, which is an important responsibility of hospitals.
The common primary filtration mode is filtration by using filter cloth, namely, in the process that a fan for an air purification system sucks in fresh air at an air inlet, the filter cloth is used for filtering the air. Due to the high air quality requirement of the isolation ward, the filter cloth must be replaced or cleaned after one day of use. Because the air purification system needs to be shut down when cleaning or replacing the filter cloth, the normal use is influenced, the cost is high, and the replacing workload is large, the existing method for replacing or cleaning the filter cloth is basically eliminated, and a device for automatically cleaning the filter cloth without shutting down is adopted instead. The device for automatically cleaning the filter cloth without stopping the machine is characterized in that a device capable of performing vertical circulating motion is arranged outside the filter cloth, a suction nozzle of a dust collector is arranged on the vertical circulating motion device, the suction nozzle can continuously move up and down along the surface of the filter cloth, impurities such as dust and flying floc on the filter cloth are circularly absorbed and cleaned and collected into a dust collection box, and the vertical circulating motion device circulates for about 10 minutes once, so that the surface of the filter cloth can be ensured to be relatively clean at any time, the air quality in an isolation ward is greatly improved, and the equipment maintenance burden is reduced.
The suction nozzle arranged on the non-stop automatic filter cloth cleaning device can circularly move up and down according to the working principle that: the device mainly comprises an alternating current motor, a long screw rod, a nut and a suction nozzle, wherein the nut provided with the suction nozzle is arranged on the long screw rod, the screw rod is driven by the motor to rotate in a forward rotation mode when the device works, the screw rod drives the nut to move upwards until the highest point touches a travel switch, then the alternating current motor rotates in a reverse rotation mode, the screw rod drives the nut to move downwards until the lowest point touches another travel switch, then the alternating current motor rotates in a forward rotation mode again, the alternating current motor rotates in a forward rotation mode and in a reverse rotation mode repeatedly to drive the nut and the suction nozzle to move up and down repeatedly, and the suction nozzle continuously cleans impurities on the surface of filter. However, in the device for automatically cleaning the filter cloth without stopping the machine, the alternating current motor is easy to damage because the alternating current motor continuously and repeatedly rotates forwards and backwards; in addition, the long-time repeated switching of the travel switch is easy to have fault failures such as contact adhesion and the like, so that equipment loss is caused.
At present, some manufacturers adopt a microcomputer to control a direct current motor to rotate positively and negatively in a device for automatically cleaning filter cloth without stopping production, so that the problem that a travel switch is easy to malfunction is solved by driving a long screw to rotate positively and negatively and driving a nut to move up and down repeatedly, but the problem that the motor is easy to damage due to repeated positive and negative rotation of a motor is not solved, and the device is high in cost and difficult to maintain.
Disclosure of Invention
The invention aims to make up the defects of the prior art, and provides a fresh air dust removal and purification device for an isolation ward. The long screw rod can drive the nut and the suction nozzle to repeatedly move up and down under the condition that the steering of the alternating current motor is not changed all the time, and impurities on the filter cloth are cleaned.
In order to achieve the purpose, the invention adopts the technical scheme that: the invention discloses a fresh air dedusting and purifying device for an isolation ward, which comprises filter cloth, a long screw, a nut, a suction nozzle, a motor and a speed reducer, wherein the motor is a three-phase alternating current motor, the filter cloth is dacron acupuncture filter cloth, the filter cloth is fixed at a fresh air inlet of a fresh air dedusting and purifying system, the upper end of the long screw is arranged on a bearing seat outside the fresh air inlet, the lower end of the long screw is connected with the motor through the speed reducer, and the nut provided with the suction nozzle is arranged in the middle of the long screw. The thread part in the middle of the long screw is provided with a left thread and a right thread which are symmetrically processed, two ends of the left thread and the right thread are respectively provided with a section of arc-shaped groove, the arc-shaped grooves enable the left thread and the right thread to be in butt joint and communicated, the thread grooves in two rotating directions on the long screw form a two-way communicated groove, and the cross sections of the grooves of the left thread, the right thread and the arc-shaped grooves are square; the nut is formed by connecting a front half nut and a rear half nut through a short bolt, an inner hole of the nut is a through hole, an internal thread is not processed in the through hole, the diameter of the inner hole of the nut is in sliding fit with the outer diameter of the long screw rod, only a small hole is formed in the middle of the front half nut and is a through hole, a sliding block is arranged in the small hole in a sliding mode, the cylindrical part of the front half part of the sliding block is inserted into the small hole, the rear half part of the sliding block is olive-shaped, the olive-shaped part of the sliding block is equivalent to the internal thread of the nut, the waist width of the olive-shaped part of the sliding block is the same as the width of a thread groove on the long screw rod and is in sliding fit, and the length of the olive-shaped part of the sliding block is equal to one half of the thread pitch on the; when the core technology part is assembled, firstly, the cylindrical part of the front half part of the sliding block is inserted into the small hole in the middle of the front half nut, then the front half nut and the rear half nut are tightly held on the long screw rod, meanwhile, the olive-shaped rear half part of the sliding block is inserted into the thread groove of the long screw rod, finally, the front half nut and the rear half nut are connected into a whole by a short bolt, and the suction nozzle is fixed on the nut by the long bolt; when the motor drives the long screw to rotate along a fixed direction, the long screw drives the sliding block in the nut to move in the thread groove of the long screw, and when the sliding block in the nut moves to the upper end and the lower end of the thread groove of the long screw, the rear half part in the olive shape in the sliding block can automatically turn around along the arc groove, so that the sliding block drives the nut to move in a reversing way, and the nut drives the suction nozzle to repeatedly move up and down along the long screw to absorb impurities on the filter cloth.
The using method of the invention is as follows: the motor is well adjusted according to the required direction of the speed reducer, the dustproof cloth sleeves are sleeved on the upper end and the lower end of the long screw rod, the relative positions of the suction nozzle and the filter cloth are adjusted, the suction openings on the two sides of the suction nozzle are uniformly close to the filter cloth, and the motor can be started to work.
The invention has the beneficial effects that: the long screw rod drives the nut and the suction nozzle to repeatedly move up and down under the condition that the steering directions of the three alternating current motors are kept unchanged all the time, so that sundries on filter cloth are cleaned; the invention overcomes the problem that the motor is easy to damage due to long-term positive and negative rotation in the prior art, overcomes the problem that the travel switch is easy to ablate when a contact is used for a long time, overcomes the problems that a microcomputer and a direct current motor have high cost and are difficult to maintain, and achieves unexpected results.
Drawings
Fig. 1 is a schematic view of the general structure of the present invention.
Fig. 2 is a sectional view a-a in fig. 1.
Fig. 3 is a schematic view of the assembly of the long screw and nut of the present invention.
Fig. 4 is a sectional view taken along line B-B in fig. 3.
Fig. 5 is a front view of the slider of the present invention.
Fig. 6 is a cross-sectional view C-C of fig. 5.
In the figure, 1, filter cloth, 2, a long screw rod, 2.1, an arc groove, 2.2, a right thread, 2.3, a left thread, 3, a suction nozzle, 4, a speed reducer, 5, a motor, 6, a bearing seat, 7, a nut, 7.1, a small hole, 7.2, a front half nut, 7.3, a rear half nut, 8, a short bolt, 9, a sliding block and 10, a long bolt.
Detailed Description
In the figure, the fresh air dedusting and purifying device for the isolation ward comprises a filter cloth 1, a long screw rod 2, a nut 7, a suction nozzle 3, a motor 5 and a speed reducer 4, wherein the motor 5 is a three-phase alternating current motor, the filter cloth 1 is a terylene acupuncture nylon filter cloth, the filter cloth 1 is fixed at a fresh air inlet of a fresh air dedusting and purifying system, the length of a thread part on the long screw rod 2 is 1000 mm which is the same as the height of the filter cloth 1, the width of the suction nozzle 3 is 800 mm which is the same as the width of the filter cloth 1, the upper end of the long screw rod 2 is arranged on a bearing seat 6 outside a fresh air inlet, the lower end of the long screw rod 2 is connected with the motor 5 through the speed reducer 4, the nut 7 provided with the suction nozzle 3 is arranged in the middle part of the long screw rod 2, the middle part of the long screw rod 2 is provided with a left thread 2.3 and a right thread 2.2 which are symmetrically processed, the arc-shaped groove 2.1 enables the left thread 2.3 and the right thread 2.2 to be in butt joint and communicated, so that the thread grooves in two rotating directions on the long screw 2 form a two-way communicated groove, and the cross sections of the left thread 2.3, the right thread 2.2 and the arc-shaped groove 2.1 are square; the nut 7 is formed by connecting a front half nut 7.2 and a rear half nut 7.3 through a short bolt 8, an internal thread is not processed in an inner hole of the nut 7, the diameter of the inner hole of the nut 7 is in sliding fit with the outer diameter of the long screw 2, only a small hole 7.1 is formed in the middle of the front half nut 7.2, the small hole 7.1 is a through hole, a sliding block 9 is slidably arranged in the small hole 7.1, the front half cylindrical part of the sliding block 9 is inserted in the small hole 7.1, the rear half part of the sliding block 9 is olive-shaped, the olive-shaped part in the sliding block 9 is equivalent to the internal thread of the nut, the waist width of the olive-shaped part in the sliding block 9 is the same as the width of a thread groove on the long screw 2 and is in sliding fit with the width of the thread groove, and the length of the olive-shaped part in the sliding block 9 is equal to one half of the thread pitch; when the invention is assembled, firstly, the cylindrical part of the front half part of the sliding block 9 is inserted into the small hole 7.1 in the middle of the front half nut 7.2, then the front half nut 7.2 and the rear half nut 7.3 are buckled on the long screw rod 2, meanwhile, the rear half part in olive shape in the sliding block 9 is inserted into the thread groove of the long screw rod 2, finally, the front half nut 7.2 and the rear half nut 7.3 are connected into a whole by the short bolt 8, and the suction nozzle 3 is fixed on the nut 7 by the long bolt 10; when the motor 5 drives the long screw rod 2 to rotate along a fixed direction, the long screw rod 2 drives the sliding block 9 in the nut 7 to move in the thread groove of the long screw rod 2, so as to drive the nut 7 to move, when the sliding block 9 in the nut 7 moves to the upper end and the lower end of the thread groove of the long screw rod 2, the back half part of the olive-shaped sliding block 9 can automatically turn around along the arc-shaped groove 2.1, so that the sliding block 9 drives the nut 7 to move in a reversing way, and the nut 7 drives the suction nozzle 3 to repeatedly move up and down along the long screw rod 2 to absorb sundries on the filter cloth.
Claims (4)
1. The utility model provides an isolation ward new trend dust removal purification device, includes filter cloth, long screw rod, nut, suction nozzle, motor, speed reducer, the motor is three-phase alternating current motor, the filter cloth is dacron acupuncture buddhist nun filter cloth, and this filter cloth is fixed in new trend dust removal purification system's new trend air intake department, and the upper end dress of long screw rod is on the outside bearing frame of new trend air intake, and the lower extreme of long screw rod links to each other with the motor through the speed reducer, and the nut dress that is equipped with the suction nozzle is at long screw rod middle part: the thread part in the middle of the long screw is provided with a left thread and a right thread which are symmetrically processed, two ends of the left thread and the right thread are respectively provided with a section of arc-shaped groove, the arc-shaped grooves enable the left thread and the right thread to be in butt joint and communicated, and the thread grooves in two rotating directions on the long screw form a two-way communicated groove; the nut is arranged in the middle of the long screw rod, the suction nozzle is fixed on the nut by the long bolt, the nut is formed by connecting a front half nut and a rear half nut through a short bolt, an internal thread is not processed in an inner hole of the nut, the diameter of the inner hole of the nut is in sliding fit with the outer diameter of the long screw rod, a small hole is formed in the middle of the front half nut, a sliding block is arranged in the small hole in a sliding mode, the front half part of the sliding block is inserted into the small hole in a cylindrical mode, and the rear half part of the sliding block is inserted into a thread groove of the long screw rod in an olive mode; when the motor drives the long screw to rotate along a fixed direction, the long screw drives the sliding block in the nut to move in the thread groove of the long screw, and when the sliding block in the nut moves to the upper end and the lower end of the thread groove on the long screw, the rear half part in the olive shape in the sliding block can automatically turn around along the arc-shaped groove, so that the sliding block drives the nut to move in a reversing way, and the suction nozzle can repeatedly move up and down along the long screw.
2. The fresh air dedusting and purifying device for the isolation ward as claimed in claim 1, which is characterized in that: the length of the upper thread part of the long screw is 1000 mm as same as the height of the filter cloth, and the width of the suction nozzle is 800 mm as same as the width of the filter cloth.
3. The fresh air dedusting and purifying device for the isolation ward as claimed in claim 1, which is characterized in that: the cross-sectional shapes of the grooves of the left thread, the right thread and the arc-shaped groove are all square.
4. The fresh air dedusting and purifying device for the isolation ward as claimed in claim 1, which is characterized in that: the waist width of the olive-shaped part of the sliding block is the same as the width of the thread groove on the long screw rod and is in sliding fit with the thread groove on the long screw rod, and the length of the olive-shaped part of the sliding block is equal to one half of the thread pitch of the thread on the long screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010310698.2A CN111389121A (en) | 2020-04-20 | 2020-04-20 | Fresh air dust removal and purification device for isolation ward |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010310698.2A CN111389121A (en) | 2020-04-20 | 2020-04-20 | Fresh air dust removal and purification device for isolation ward |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111389121A true CN111389121A (en) | 2020-07-10 |
Family
ID=71417053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010310698.2A Withdrawn CN111389121A (en) | 2020-04-20 | 2020-04-20 | Fresh air dust removal and purification device for isolation ward |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111389121A (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040067404A (en) * | 2003-01-23 | 2004-07-30 | 이양로 | dust collector |
| CN201909004U (en) * | 2011-01-14 | 2011-07-27 | 刘沛生 | Linearly reciprocating unit |
| CN203797837U (en) * | 2014-03-03 | 2014-08-27 | 浙江强盛医用工程有限公司 | Ward air purification system |
| CN106861312A (en) * | 2017-03-15 | 2017-06-20 | 甘培嘉 | For the deashing device of dust removal machine filter cylinder |
| US20170319033A1 (en) * | 2016-05-03 | 2017-11-09 | Lg Electronics Inc. | Vacuum cleaner |
| CN107433080A (en) * | 2017-08-11 | 2017-12-05 | 盐城市净博士机械有限公司 | A kind of filter screen of air purifier cleaning device |
| CN207247456U (en) * | 2017-06-23 | 2018-04-17 | 新疆维吾尔自治区人民医院 | A kind of ward air cleaner |
| KR101956632B1 (en) * | 2018-07-16 | 2019-03-11 | (주)센도리 | Filter of airconditioner |
| CN109528079A (en) * | 2018-12-11 | 2019-03-29 | 洛可可创新设计(深圳)有限公司 | A kind of environment-protecting intelligent dust catcher |
| CN109621577A (en) * | 2019-01-17 | 2019-04-16 | 华北理工大学 | A kind of emission-control equipment for intelligently making steel |
| CN109865361A (en) * | 2019-04-04 | 2019-06-11 | 南通巨大机械制造有限公司 | A kind of dust-extraction unit of the building materials workshop with filter screen cleaning function |
| CN110250977A (en) * | 2019-06-25 | 2019-09-20 | 洪辉 | A kind of hand dryer of energy scavenging air filter |
| EP3587939A1 (en) * | 2018-06-29 | 2020-01-01 | Mitsubishi Heavy Industries Thermal Systems, Ltd. | Filter cleaning unit and air conditioner |
| CN110661218A (en) * | 2019-11-14 | 2020-01-07 | 镇江昌达电气有限公司 | Layered assembled composite fireproof and anticorrosive cable bridge |
| CN210229425U (en) * | 2019-05-31 | 2020-04-03 | 三河市清源绿创环境技术股份有限公司 | Waste gas treatment device |
| CN210543914U (en) * | 2019-06-10 | 2020-05-19 | 邯郸市微克环保科技有限公司 | Air purifier with automatically cleaning is filter screen just |
-
2020
- 2020-04-20 CN CN202010310698.2A patent/CN111389121A/en not_active Withdrawn
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040067404A (en) * | 2003-01-23 | 2004-07-30 | 이양로 | dust collector |
| CN201909004U (en) * | 2011-01-14 | 2011-07-27 | 刘沛生 | Linearly reciprocating unit |
| CN203797837U (en) * | 2014-03-03 | 2014-08-27 | 浙江强盛医用工程有限公司 | Ward air purification system |
| US20170319033A1 (en) * | 2016-05-03 | 2017-11-09 | Lg Electronics Inc. | Vacuum cleaner |
| CN106861312A (en) * | 2017-03-15 | 2017-06-20 | 甘培嘉 | For the deashing device of dust removal machine filter cylinder |
| CN207247456U (en) * | 2017-06-23 | 2018-04-17 | 新疆维吾尔自治区人民医院 | A kind of ward air cleaner |
| CN107433080A (en) * | 2017-08-11 | 2017-12-05 | 盐城市净博士机械有限公司 | A kind of filter screen of air purifier cleaning device |
| EP3587939A1 (en) * | 2018-06-29 | 2020-01-01 | Mitsubishi Heavy Industries Thermal Systems, Ltd. | Filter cleaning unit and air conditioner |
| KR101956632B1 (en) * | 2018-07-16 | 2019-03-11 | (주)센도리 | Filter of airconditioner |
| CN109528079A (en) * | 2018-12-11 | 2019-03-29 | 洛可可创新设计(深圳)有限公司 | A kind of environment-protecting intelligent dust catcher |
| CN109621577A (en) * | 2019-01-17 | 2019-04-16 | 华北理工大学 | A kind of emission-control equipment for intelligently making steel |
| CN109865361A (en) * | 2019-04-04 | 2019-06-11 | 南通巨大机械制造有限公司 | A kind of dust-extraction unit of the building materials workshop with filter screen cleaning function |
| CN210229425U (en) * | 2019-05-31 | 2020-04-03 | 三河市清源绿创环境技术股份有限公司 | Waste gas treatment device |
| CN210543914U (en) * | 2019-06-10 | 2020-05-19 | 邯郸市微克环保科技有限公司 | Air purifier with automatically cleaning is filter screen just |
| CN110250977A (en) * | 2019-06-25 | 2019-09-20 | 洪辉 | A kind of hand dryer of energy scavenging air filter |
| CN110661218A (en) * | 2019-11-14 | 2020-01-07 | 镇江昌达电气有限公司 | Layered assembled composite fireproof and anticorrosive cable bridge |
Non-Patent Citations (1)
| Title |
|---|
| 贾鹏飞等: "《玩转科技制作》", 31 December 2018 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208090856U (en) | A kind of efficient air purifier | |
| CN108195003A (en) | A kind of efficient air purifier | |
| CN111389121A (en) | Fresh air dust removal and purification device for isolation ward | |
| CN105952226B (en) | A kind of intelligent machine garage based on Internet of Things | |
| CN209147344U (en) | A kind of mute window fresh air purifier of energy-saving safety frequency conversion | |
| CN107081024A (en) | It is a kind of to automate the Intelligent air purifier of cleaning | |
| CN113368611A (en) | Air purification equipment filter screen cleaning device | |
| CN113714847B (en) | Double-spindle machine tool and using method thereof | |
| CN209753494U (en) | Cleaning and disinfecting robot | |
| CN110567063B (en) | Air purification equipment | |
| CN114322174A (en) | Novel intelligent purifying and sterilizing machine and purifying and sterilizing method thereof | |
| CN211011774U (en) | Heat supply and ventilation device of building system | |
| CN111249845B (en) | Waste gas purification device | |
| CN220169611U (en) | Air purification equipment capable of intelligently sterilizing and moisturizing | |
| CN218846330U (en) | Laminar flow operating room air purification air supply arrangement | |
| CN113172533A (en) | Precision polishing machine with water curtain | |
| CN111425963A (en) | Self-cleaning method of ward building air purification device | |
| CN217092592U (en) | PM2.5 content detection and filtration device for environmental pollution prevention and treatment | |
| CN205908085U (en) | Intelligent machine garage based on thing networking | |
| CN212039547U (en) | Dust collector is used in furniture processing | |
| CN219131620U (en) | Automatic feeding device for metal wires | |
| CN110439649A (en) | A kind of intelligent automobile machine oil filter core device | |
| CN219797432U (en) | Integrated air purifier with double air inlets | |
| CN219662970U (en) | Fine filtering device for beeswax production | |
| CN211407087U (en) | Domestic fungus goes out mushroom room heat recovery and utilizes system |
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 | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200710 |