CN218166398U - Dustproof device for construction technology of building engineering - Google Patents

Dustproof device for construction technology of building engineering Download PDF

Info

Publication number
CN218166398U
CN218166398U CN202221646391.0U CN202221646391U CN218166398U CN 218166398 U CN218166398 U CN 218166398U CN 202221646391 U CN202221646391 U CN 202221646391U CN 218166398 U CN218166398 U CN 218166398U
Authority
CN
China
Prior art keywords
gear
vehicle body
dust
construction technology
water tank
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.)
Expired - Fee Related
Application number
CN202221646391.0U
Other languages
Chinese (zh)
Inventor
金超
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CN202221646391.0U priority Critical patent/CN218166398U/en
Application granted granted Critical
Publication of CN218166398U publication Critical patent/CN218166398U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Special Spraying Apparatus (AREA)

Abstract

The utility model belongs to the technical field of the building engineering construction, a dustproof device for building engineering construction technology is related to. A dustproof device for construction technology of constructional engineering comprises a vehicle body, a clear water tank, a filtering mechanism and a spraying mechanism. Dust removal of two kinds of modes is carried out through setting up dust absorption fan and spraying mechanism, can easily face comparatively abominable dust environment. Can drive first filter through drive mechanism when the atomizing machine horizontal hunting and rotate to reach the purpose of the first filter of regular clearance, simultaneously through the filtration of first filter and second filter, can collect dust in the impurity case 28, avoid the dust to raise once more and cause secondary pollution. Meanwhile, the water resource is collected into the clear water tank, so that the recovered water is conveyed to the atomizing machine through the conveying piece to be sprayed out, the water resource is utilized to the maximum extent, and the phenomenon of resource waste is avoided.

Description

Dustproof device for construction technology of building engineering
Technical Field
The utility model belongs to the technical field of the building engineering construction, a dustproof device for building engineering construction technology is related to.
Background
Construction sites of construction engineering are often accompanied by a large amount of dust, causing air pollution and damage to human bodies. Therefore, a dustproof device is needed in a construction site, but when the construction site is in a severe dust environment, the single spraying device adopted at present cannot play a good dust removal effect. And can't collect dust, when spray set stopped, dust had the possibility of kicking up again, consequently need open spray set always, caused the waste of water resource comparatively serious condition. Therefore, a dust-proof device capable of collecting and processing dust and recycling water resources is needed.
In order to solve the problem, the utility model provides a dustproof device for building engineering construction technology.
SUMMERY OF THE UTILITY MODEL
For solving the problem that exists among the background art, the utility model provides a dust keeper for building engineering construction technology.
In order to realize the purpose, the utility model discloses a technical scheme as follows: a dustproof device for construction technology of constructional engineering comprises a vehicle body, a clear water tank, a filtering mechanism and a spraying mechanism; a filtering mechanism is arranged in one side of the vehicle body, a dust absorption fan is fixedly installed at the front end of the filtering mechanism, and a clear water tank is fixedly arranged below the filtering mechanism; the spraying mechanism is arranged at the top of one end of the vehicle body, an equipment cabin is arranged in the vehicle body below the spraying mechanism, a conveying piece is arranged in the equipment cabin, one end of the conveying piece is communicated with the clean water tank, and the other end of the conveying piece is communicated with the spraying mechanism.
Furthermore, the filtering mechanism comprises a first filtering plate, a second filtering plate and a spray head; the spray head is fixedly arranged at the top in the vehicle body; the first filter plate is arranged at the upper end of the clean water tank, the left side of the clean water tank is positioned in the vehicle body and is provided with an impurity box, the impurity box and the clean water tank are separated by the second filter plate, and the bottom of the impurity box is of an inclined plane structure; one end of the impurity box is provided with a sealing door.
Furthermore, a cross rod is arranged below one end of the first filter plate, and two ends of the cross rod are fixedly connected to the inner wall of the vehicle body; the other end of the first filter plate is symmetrically connected with a third rotating shaft which is rotationally connected to the side wall of the vehicle body; the third rotating shaft is connected with the spraying mechanism through a transmission mechanism.
Further, the spraying mechanism comprises an atomizer, a first rotating shaft, an incomplete gear, a first gear and a motor; the first rotating shaft is rotatably arranged at the top of one end of the vehicle body, the top of the first rotating shaft is fixedly connected with an atomizer, an incomplete gear is fixedly arranged in the middle of the first rotating shaft and is meshed with the first gear, the first gear is fixedly arranged on an output shaft of a motor, and the motor is fixedly arranged at the top of the vehicle body.
Further, the conveying piece comprises a water pump, a water suction pipe and a water conveying pipe; the water pump is fixedly arranged at the bottom of the equipment cabin, and the water pump is communicated with the clear water tank through a water suction pipe; one end of the water supply pipe is communicated with the water pump, and the other end of the water supply pipe is communicated with the atomizer.
Further, the transmission mechanism comprises an end face gear, a second rotating shaft, a first belt wheel, a belt and a second belt wheel; the fixed montant that is provided with in end gear's upper end, the arc wall has been seted up at the top of automobile body, and the montant slides and sets up in the arc wall, and the other end fixed connection of montant is at the lower extreme of atomizer afterbody, end gear can mesh with the second gear, and the one-way bearing has been cup jointed to second gear inside, and the inside second pivot that has cup jointed of one-way bearing, second pivot rotate to set up on the inner wall of automobile body, and the cover is equipped with first band pulley on the second pivot outer peripheral face, and first band pulley and second band pulley pass through belt transmission and connect, and the fixed cover of second band pulley is established on the third pivot outer peripheral face.
Further, the profile of the face gear is a section of circular arc.
Furthermore, a plurality of wheels are fixedly arranged at the bottom of the vehicle body.
Compared with the prior art, the utility model discloses following beneficial effect has: dust removal of two kinds of modes is carried out through setting up dust absorption fan and spraying mechanism, can easily face comparatively abominable dust environment. Can drive first filter through drive mechanism when the atomizer horizontal hunting and rotate to reach the purpose of regularly clearing up first filter, simultaneously through the filtration of first filter and second filter, can collect impurity box 28 with dust in, avoid the dust to raise once more and cause secondary pollution. Meanwhile, the water resource is collected into the clear water tank, so that the recovered water is conveyed to the atomizing machine through the conveying piece to be sprayed out, the water resource is utilized to the maximum extent, and the phenomenon of resource waste is avoided.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a cross-sectional view of the present invention;
FIG. 3 is a schematic view of the connection between the face gear and the second gear of the present invention;
fig. 4 is a top view of the face gear of the present invention;
fig. 5 is a schematic connection diagram of the first belt wheel, the second belt wheel and the belt according to the present invention.
In the figure: 1. a vehicle body; 2. a wheel; 3. an atomizer; 4. a first rotating shaft; 5. an incomplete gear; 6. a first gear; 7. a motor; 8. a vertical rod; 9. an arc-shaped slot; 10. a face gear; 11. a second gear; 12. a one-way bearing; 13. a second rotating shaft; 14. a first pulley; 15. a belt; 16. a second pulley; 17. a third rotating shaft; 18. a first filter plate; 19. a cross bar; 20. a second filter plate; 21. a clear water tank; 22. an equipment compartment; 23. a suction pipe; 24. a water pump; 25. a water supply pipe; 26. a dust collection fan; 27. a spray head; 28. an impurity box; 29. and (4) sealing the door.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1-3, the technical solution adopted by the present invention is as follows: a dustproof device for construction technology of constructional engineering comprises a vehicle body 1, a clear water tank 21, a filtering mechanism and a spraying mechanism. The bottom of automobile body 1 is fixed and is provided with a plurality of wheel 2, is convenient for remove dust to suitable position with this device. Under the combined action of filter mechanism and spraying mechanism, can absorb the filtration with the dust in the air, spray remaining dust, can make the device easily deal with comparatively abominable dust environment.
A filtering mechanism is arranged inside one side of the vehicle body 1, a dust suction fan 26 is fixedly installed at the front end of the filtering mechanism, and a clean water tank 21 is fixedly arranged below the filtering mechanism. The filter mechanism comprises a first filter plate 18, a second filter plate 20 and a spray head 27. The spray head 27 is fixedly mounted on the top inside the vehicle body 1. The first filter plate 18 is disposed at an upper end of the clean water tank 21, the dust suction fan 26 sucks dust into the vehicle body 1, and the spray head 27 sprays the dust onto the first filter plate 18 and filters water into the clean water tank 21. The left side of the clean water tank 21 is provided with an impurity tank 28 in the vehicle body 1, the impurity tank 28 and the clean water tank 21 are separated by a second filter plate 20, and the bottom of the impurity tank 28 is of an inclined plane structure, so that water in the impurity tank 28 can enter the clean water tank 21 through the second filter plate 20. One end of the impurity box 28 is provided with a sealing door 29, so that dust deposited in the impurity box 28 can be cleaned regularly. Through the filtration of first filter 18 and second filter 20, can be effectual collect the clear water tank 21 with water in, avoid the loss of water resource.
The spraying mechanism is arranged at the top of one end of the vehicle body 1 and comprises an atomizer 3, a first rotating shaft 4, an incomplete gear 5, a first gear 6 and a motor 7; first pivot 4 rotates and sets up at the top of automobile body 1, and the top fixedly connected with atomizer 3 of first pivot 4, and the middle part of first pivot 4 is fixed and is provided with incomplete gear 5, and incomplete gear 5 and first gear 6 mesh, and first gear 6 is fixed to be set up on the output shaft of motor 7, and motor 7 fixed mounting is at the top of automobile body 1. The atomizer 3 can be driven by the motor 7 to swing left and right to increase the spraying area of the atomizer 3 and improve the dust removal efficiency.
An equipment cabin 22 is arranged in the vehicle body 1 below the spraying mechanism, and a conveying part is arranged in the equipment cabin 22. The transport element comprises a water pump 24, a suction pipe 23 and a water supply pipe 25. The water pump 24 is fixedly arranged at the bottom of the equipment cabin 22, and the water pump 24 is communicated with the clean water tank 21 through a water suction pipe 23; one end of the water supply pipe 25 is communicated with the water pump 24, and the other end of the water supply pipe 25 is communicated with the atomizer 3. Can pass through the water blowout of atomizing machine 3 with the water in the clear water tank 21, carry out dust removal purification to the air, play water resource reuse's purpose.
A cross rod 19 is arranged below one end of the first filter plate 18, and two ends of the cross rod 19 are fixedly connected to the inner wall of the vehicle body 1; the other end of the first filter plate 18 is symmetrically connected with a third rotating shaft 17 at two sides, and the third rotating shaft 17 is rotatably connected on the side wall of the vehicle body 1. The third rotating shaft 17 is connected with the atomizer 3 of the spraying mechanism through a transmission mechanism. The transmission mechanism comprises a face gear 10, a second gear 11, a second rotating shaft 13, a first belt wheel 14, a belt 15 and a second belt wheel 16. The fixed montant 8 that is provided with in upper end of face gear 10, arc wall 9 has been seted up at the top of automobile body 1, and montant 8 slides and sets up in arc wall 9, and the other end fixed connection of montant 8 is at the lower extreme of 3 afterbody of atomizer, face gear 10 can mesh with second gear 11, and second gear 11 is inside to have cup jointed one-way bearing 12, and the inside second pivot 13 that has cup jointed of one-way bearing 12, second pivot 13 rotate to set up on the inner wall of automobile body 1, and the cover is equipped with first band pulley 14 on the 13 outer peripheral faces of second pivot, and first band pulley 14 and second band pulley 16 pass through belt 15 transmission and connect, and the fixed cover of second band pulley 16 is established on the 17 outer peripheral faces of third pivot. When the atomizing machine 3 (the direction of Y in figure 4) rotates, can drive first filter 18 through drive mechanism and use third pivot 17 as the centre of a circle upwards rotatory, make the dust of deposit on first filter 18 erode inflow impurity case 28 by shower nozzle 27, it is poor to avoid a large amount of dust to pile up and cause the filter effect on first filter 18, collects dust simultaneously, avoids dust to influence dustproof effect in the reentrant air.
During the use, push away automobile body 1 to suitable position through wheel 2, then start dust absorption fan 26, dust absorption fan 26 is with in the suction automobile body 1 of dust in the adverse circumstances, shower nozzle 27 sprays water in to automobile body 1 this moment, with the dust in the air spray to first filter 18 on, unnecessary moisture passes through in filter 18 inflow clear water tank 21, use in order to be equipped with atomizing machine 3, when carrying out preliminary purification to the air, can make the water resource collect and recycle, resources are saved has been reached.
Meanwhile, the water pump 24 is started, and water in the clean water tank 21 is sent into the atomizer 3 through the water suction pipe 23 and the water supply pipe 25 to be atomized and blown out, so that atomized water vapor is attached to dust in the air, and the purpose of purifying the air is achieved. Meanwhile, the motor 7 is started, the motor 7 drives the first gear 6 to rotate in a forward and reverse alternating mode according to the set frequency, and therefore the incomplete gear 5 on the first rotating shaft 4 drives the atomizer 3 to swing left and right by taking the first rotating shaft 4 as a circle center, so that the atomized water vapor spraying area is increased, the air purifying area is increased, and the dustproof efficiency is improved.
When the atomizer 3 rotates, the vertical rod 8 is driven to reciprocate in the arc-shaped groove 9, so that the end face gear 10 is driven to reciprocate in the vehicle body 1. When the face gear 10 (along the Y direction in fig. 4) moves, the face gear 10 drives the second gear 11 to rotate, and at this time, the one-way bearing 12 is locked, thereby driving the second rotating shaft 13 to rotate, the second rotating shaft 13 drives the second belt pulley 16 to rotate through the first belt pulley 14 and the belt 15, the second belt pulley 16 drives the first filter 18 to rotate upward through the third rotating shaft 17, taking the third rotating shaft 17 as the center of a circle, and at this time, the dust deposited on the first filter 18 is washed by the spraying of the spraying nozzle 27, and falls into the impurity box 28 downward along the inclined first filter 18, because the second filter 20 is arranged between the impurity box 28 and the clean water box 21, and the bottom of the impurity box 28 is in an inclined plane shape, the water in the impurity box 28 flows into the clean water box 21 through the second filter 20 along the inclined plane, so as to be used by the atomizer 3, the water resource is reused, and the dust remains in the impurity box 28, so that the dust is prevented from being lifted into the air again, and causing unnecessary troubles caused by air secondary pollution. Furthermore, cleaning can be carried out periodically by means of a sealing door 29.
The face gear 10 continues to move (in the direction Y in fig. 4), and when the face gear 10 disengages from the second gear 11, the first filter plate 18 falls back down under gravity, the first filter plate 18 hits the cross bar 19, and the movement stops. Due to the fact that the first filter plate 18 and the cross rod 19 collide to generate vibration, dust deposited on the first filter plate 18 is vibrated to become loose and is flushed into the impurity box 28 when the first filter plate is lifted next time, and the problem that the dust deposited for a long time causes the filtering effect of the first filter plate 18 to be poor and the dust removing effect to be influenced is avoided.
In addition, the first filter plate 18 may cause a gap between the first filter plate 18 and the inner wall of the clean water tank 21 during the rotation, and a part of dust may enter the clean water in the clean water tank 21 through the gap. In order to solve the above problem, a third filter plate may be provided on the suction pipe 23. Or, the inside of the vehicle body 1 is provided with an arc structure matched with the first filter plate 18, so that the first filter plate 18 is always attached to the inner wall of the vehicle body 1, and a gap is avoided.
When the atomizer 3 drives the montant 8 and the face gear 10 to rotate to the rightmost end of the arc-shaped groove 9 (the one end of keeping away from the second gear 11), the motor 7 begins the reverse rotation, thereby drive the reverse rotation of the atomizer 3, the montant 8 drives the face gear 10 to move along the reverse direction of Y in figure 4 from the rightmost end of the automobile body 1 inside this moment, reach the second gear 11 top when the face gear 10, and when meshing with the second gear 11, one-way bearing 12 is the state of loosening in this direction, namely the second gear 11 can not drive the second pivot 13 through one-way bearing 12 and rotate, thereby avoid first filter 18 to rotate downwards, cause the interference with horizontal pole 19, and avoid dust on the first filter 18 to get into the clear water tank 21 and pollute the clear water.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims (8)

1. The utility model provides a dust keeper for building engineering construction technology which characterized in that includes: the device comprises a vehicle body (1), a clear water tank (21), a filtering mechanism and a spraying mechanism; a filtering mechanism is arranged in one side of the vehicle body (1), a dust suction fan (26) is fixedly installed at the front end of the filtering mechanism, and a clear water tank (21) is fixedly arranged below the filtering mechanism; the spraying mechanism is arranged at the top of one end of the vehicle body (1), an equipment cabin (22) is arranged in the vehicle body (1) below the spraying mechanism, a conveying piece is arranged in the equipment cabin (22), one end of the conveying piece is communicated with the clear water tank (21), and the other end of the conveying piece is communicated with the spraying mechanism.
2. The dustproof device for constructional engineering construction technology as set forth in claim 1, wherein: the filtering mechanism comprises a first filtering plate (18), a second filtering plate (20) and a spray head (27); the spray head (27) is fixedly arranged at the top in the vehicle body (1); the first filter plate (18) is arranged at the upper end of the clean water tank (21), the left side of the clean water tank (21) is positioned in the vehicle body (1) and is internally provided with an impurity tank (28), the impurity tank (28) and the clean water tank (21) are separated through the second filter plate (20), and the bottom of the impurity tank (28) is of an inclined plane structure; one end of the impurity box (28) is provided with a sealing door (29).
3. The dustproof device for the constructional engineering construction technology as claimed in claim 2, wherein: a cross rod (19) is arranged below one end of the first filter plate (18), and two ends of the cross rod (19) are fixedly connected to the inner wall of the vehicle body (1); the other end of the first filter plate (18) is symmetrically connected with a third rotating shaft (17), and the third rotating shaft (17) is rotatably connected to the side wall of the vehicle body (1); the third rotating shaft (17) is connected with the spraying mechanism through a transmission mechanism.
4. The dustproof device for the constructional engineering construction technology as claimed in claim 1, wherein: the spraying mechanism comprises an atomizer (3), a first rotating shaft (4), an incomplete gear (5), a first gear (6) and a motor (7); first pivot (4) are rotated and are set up at the top of automobile body (1) one end, the top fixedly connected with atomizer (3) of first pivot (4), and the middle part of first pivot (4) is fixed and is provided with incomplete gear (5), and incomplete gear (5) and first gear (6) meshing, first gear (6) are fixed to be set up on the output shaft of motor (7), and motor (7) fixed mounting is at the top of automobile body (1).
5. The dustproof device for the constructional engineering construction technology as set forth in claim 4, wherein: the conveying piece comprises a water pump (24), a water suction pipe (23) and a water conveying pipe (25); the water pump (24) is fixedly arranged at the bottom of the equipment cabin (22), and the water pump (24) is communicated with the clear water tank (21) through a water suction pipe (23); one end of the water supply pipe (25) is communicated with the water pump (24), and the other end of the water supply pipe (25) is communicated with the atomizer (3).
6. The dustproof device for the constructional engineering construction technology as set forth in claim 3, wherein: the transmission mechanism comprises an end face gear (10), a second gear (11), a second rotating shaft (13), a first belt wheel (14), a belt (15) and a second belt wheel (16); the fixed montant (8) that is provided with in upper end of end gear (10), arc wall (9) have been seted up at the top of automobile body (1), and montant (8) slide to set up in arc wall (9), and the other end fixed connection of montant (8) is at the lower extreme of atomizing machine (3) afterbody, end gear (10) can mesh with second gear (11), and one-way bearing (12) have been cup jointed to second gear (11) inside, and inside second pivot (13) of having cup jointed of one-way bearing (12), second pivot (13) rotate and set up on the inner wall of automobile body (1), and the cover is equipped with first band pulley (14) on second pivot (13) outer peripheral face, and first band pulley (14) and second band pulley (16) pass through belt (15) transmission and connect, and the fixed cover of second band pulley (16) is established on third pivot (17) outer peripheral face.
7. The dustproof device for the constructional engineering construction technology as set forth in claim 6, wherein: the face gear (10) is in the shape of a section of circular arc.
8. The dustproof device for constructional engineering construction technology as set forth in claim 1, wherein: the bottom of the vehicle body (1) is fixedly provided with a plurality of wheels (2).
CN202221646391.0U 2022-06-28 2022-06-28 Dustproof device for construction technology of building engineering Expired - Fee Related CN218166398U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202221646391.0U CN218166398U (en) 2022-06-28 2022-06-28 Dustproof device for construction technology of building engineering

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202221646391.0U CN218166398U (en) 2022-06-28 2022-06-28 Dustproof device for construction technology of building engineering

Publications (1)

Publication Number Publication Date
CN218166398U true CN218166398U (en) 2022-12-30

Family

ID=84612123

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202221646391.0U Expired - Fee Related CN218166398U (en) 2022-06-28 2022-06-28 Dustproof device for construction technology of building engineering

Country Status (1)

Country Link
CN (1) CN218166398U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116510383A (en) * 2023-05-05 2023-08-01 广州极效能源科技有限公司 Circulating oil filtering equipment with filtering medium and automatic cleaning function

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116510383A (en) * 2023-05-05 2023-08-01 广州极效能源科技有限公司 Circulating oil filtering equipment with filtering medium and automatic cleaning function
CN116510383B (en) * 2023-05-05 2023-09-26 广州极效能源科技有限公司 Circulating oil filtering equipment with filtering medium and automatic cleaning function

Similar Documents

Publication Publication Date Title
CN212129007U (en) Can restrain environmental protection sweeping machine of raise dust
CN218166398U (en) Dustproof device for construction technology of building engineering
CN215948034U (en) Civil engineering operation cleans dust collector
CN218492395U (en) Cleaning device for highway maintenance
CN216459378U (en) A dust keeper for calcium oxide production
CN109108259B (en) Foundry goods processing is with shakeout device convenient to even feeding
CN217141386U (en) Novel dust collector of aerated concrete block
CN215782486U (en) Environment-friendly dust removal device for casting workshop
CN115628098A (en) Dust removal equipment in coal mining
CN213646831U (en) Scrubbing device for gear machining
CN212611051U (en) Low fibre damage carding machine
CN212129016U (en) Road surface cleaning vehicle capable of recycling water
CN112090214A (en) Dust removal device for furniture production workshop
CN221062125U (en) Multifunctional industrial dust remover
CN220403897U (en) Industrial factory building cleaning device
CN218459054U (en) Dust removal environmental protection equipment
CN214638494U (en) Clear portable cleaning machine in cigarette factory workshop top
CN216395728U (en) Humidifying rotation type dust remover
CN215857440U (en) Environment-friendly industrial floor scrubber
CN220918508U (en) Dust collection device for industrial waste gas
CN220927682U (en) Dust fall sprinkler for highway maintenance operation
CN221184011U (en) Part cleaning equipment for metal heat treatment processing
CN218047304U (en) Solid waste flue gas denitration device
CN213836463U (en) Concrete sprayer with dust removal function
CN216878466U (en) Civil engineering is with on-spot dust collector

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20221230