CN212087494U - Ventilation device for pig breeding - Google Patents

Ventilation device for pig breeding Download PDF

Info

Publication number
CN212087494U
CN212087494U CN202020720731.4U CN202020720731U CN212087494U CN 212087494 U CN212087494 U CN 212087494U CN 202020720731 U CN202020720731 U CN 202020720731U CN 212087494 U CN212087494 U CN 212087494U
Authority
CN
China
Prior art keywords
wall
motor
control button
fixed mounting
screw
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
CN202020720731.4U
Other languages
Chinese (zh)
Inventor
光永福
王建明
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.)
Mitsunaga Fuku
Original Assignee
Mitsunaga Fuku
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 Mitsunaga Fuku filed Critical Mitsunaga Fuku
Priority to CN202020720731.4U priority Critical patent/CN212087494U/en
Application granted granted Critical
Publication of CN212087494U publication Critical patent/CN212087494U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Ventilation (AREA)

Abstract

The utility model discloses a ventilation unit for pig is bred, the on-line screen storage device comprises a base, the equal fixed mounting of base left and right sides upper end outer wall has cylinder A, cylinder A left side outer wall fixed mounting has control button A, control button A downside fixed mounting has control button B, control button B downside fixed mounting has control button C, cylinder A left side upper end outer wall fixed mounting has motor A, motor A lower extreme runs through cylinder A and rotates and install screw rod A, screw rod A outer wall rotates and has cup jointed screw rod cover A. The utility model discloses an installed rotating-structure, improved the effect of ventilation, increased ventilation unit's practicality.

Description

Ventilation device for pig breeding
Technical Field
The utility model relates to a ventilation unit technical field specifically is a ventilation unit is used in pig breeding.
Background
At present, the existing ventilation device for cultivation has some defects, such as; a large amount of odor is generated in the process of breeding pigs, so that workers are uncomfortable, and the odor in a breeding field needs to be extracted and discharged by a good ventilation device.
Patent CN201811327071.7 discloses a ventilation unit for pig breeding, the device is breeding to current pig and is using in-process with ventilation unit, though can reach the ventilation of taking a breath to pig house inside, the operation is complicated, the function is simple, and does not have energy-concerving and environment-protective advantage, and then reduced pig and bred and use efficiency with ventilation unit, and then reduced pig and bred and used ventilation unit's practicality, through in pig house body, water storage device, water storage box, first logical groove, sponge filter layer, PP fibre filter layer, cation exchange resin filter layer, battery, solar energy electroplax, water pump, spray tube, nozzle, heat preservation lamp, air inlet unit, air inlet shell, second logical groove, polyester fibre filter layer, active carbon filter layer, HEPA filter layer, air inlet fan, exhaust device, exhaust shell, third logical groove, exhaust fan, temperature and humidity sensor, odor sensor, Under the use of mutually supporting of parts such as controller, not only can reach the purpose of ventilating fast inside the pig house, easy operation moreover, the function is various, has energy-concerving and environment-protective advantage simultaneously, and then has improved pig and has bred ventilation unit's for ventilation unit's availability factor, and then has improved pig and bred for ventilation unit's practicality.
The ventilation device has the following defects: 1. the existing ventilation device is in a fixed state, so that the ventilation device is inconvenient to adjust the air draft position according to the concentration position of the smell, and the ventilation effect is reduced. 2. The existing ventilation device has limited air draft efficiency, and can extract smell only after spending a long time, thereby reducing the practicability of the ventilation device.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a pig is bred and uses ventilation unit has solved the problem that proposes in the background art.
In order to achieve the above object, the utility model provides a following technical scheme: a ventilation device for pig breeding comprises a base, wherein the outer walls of the upper ends of the left side and the right side of the base are fixedly provided with a cylinder A, the outer wall of the left side of the cylinder A is fixedly provided with a control button A, the lower side of the control button A is fixedly provided with a control button B, the lower side of the control button B is fixedly provided with a control button C, the outer wall of the upper end of the left side of the cylinder A is fixedly provided with a motor A, the lower end of the motor A penetrates through the cylinder A to be rotatably provided with a screw rod A, the outer wall of the screw rod A is rotatably sleeved with a screw rod sleeve A, the outer wall of the screw rod sleeve A is fixedly sleeved with a bearing sleeve A, the inside of the right side of the cylinder A is fixedly provided with a slide rod, the outer wall of the slide rod is movably sleeved with a slide sleeve, the inside of the, the left side of the motor B is provided with a screw B in a penetrating way through a cylinder B in a rotating way, the outer wall of the screw B is sleeved with a screw sleeve B in a rotating way, the outer wall of the screw sleeve B is fixedly sleeved with a bearing sleeve B, the lower side of the cylinder B is provided with a sliding groove B in a fixed way, the lower side of the bearing sleeve B is provided with a fixed plate in a penetrating way through the sliding groove B in a fixed way, the upper end outer wall of the right side of the fixed plate is fixedly provided with a motor C, the lower end of the motor C is provided with a rotating wheel in a penetrating way through the fixed plate in a rotating way, the outer wall of the lower side of the center of the fixed plate is provided with a rotating disc, the outer wall of the rotating disc is fixedly provided with a toothed block B, the left side and the right side of the rotating disc, the diaphragm both sides inside fixed mounting have the vent, vent downside fixed connection is even the pipe.
As a preferred embodiment of the present invention, the outer wall of the screw rod a is threaded, and the inner wall of the screw rod sleeve a is threaded with the thread matching with the thread of the outer wall of the screw rod a, thereby forming a rotating structure.
As a preferred embodiment of the present invention, the outer wall of the screw B is threaded, and the inner wall of the screw B is threaded with the thread matching with the outer wall of the screw B to form a rotating structure.
As a preferred embodiment of the present invention, the outer wall fixed mounting of the rotating wheel has a tooth block a, the outer wall fixed mounting of the rotating disc has a tooth block B matched with the tooth block a, which constitutes a rotating structure.
As a preferred embodiment of the present invention, the input of control button a, control button B and control button C is connected with external power supply constitution electricity through the wire, control button a's output and motor a's input are connected through the wire constitution electricity, control button B's output and motor B's input are connected through the wire constitution electricity, control button C's output and motor C's input pass through the wire constitution electricity and are connected, motor D's input passes through the wire constitution electricity with external power supply and is connected.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the utility model relates to a ventilation unit for pig breeding, through rotating structure, when needing to ventilate, press control button A and control motor A operation through the controller, motor A operates and drives screw rod A and rotate, screw rod A has screw thread through the outer wall to cooperate with screw rod cover A inner wall screw thread and drive screw rod A to rotate and move down, screw rod cover A moves down and drives bearing housing A to move down, thereby drive cylinder B to move down in sliding tray A, drive the sliding sleeve to slide down on the outer wall of the sliding rod, drive the high more effective extraction smell of updraft ventilator decline, press control button B and control motor B through the controller to operate, motor B operates and drives screw rod B to rotate, screw rod B has screw thread through the outer wall to cooperate with screw rod cover B inner wall screw thread and drives screw rod B to rotate, screw rod cover B moves left and right and drives bearing housing B to move, thereby drive the updraft ventilator of downside installation and remove the position of moving as required and adjust specific convulsions, improved the effect of convulsions.
The utility model relates to a pig is bred and uses ventilation unit, through rotating-structure, after the adjusting position, press control button C and pass through controller control motor C operation, motor C operation drives the runner and rotates, the runner rotates the tooth piece A through outer wall fixed mounting and rotates, tooth piece A rotates and drives tooth piece B and rotate, tooth piece B rotates and drives the carousel and rotate, the carousel rotates and drives downside fixed mounting's fixed block and rotates, fan in the left and right sides fixed block directly rotates convulsions under the condition that motor D put through external power supply, the rotation form convulsions have improved the effect of convulsions, the time of convulsions has been reduced, ventilation unit's practicality has been improved.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a front view of the ventilation device for pig breeding of the present invention;
fig. 2 is a schematic diagram of a partially enlarged structure in fig. 1 of the ventilation device for pig breeding of the present invention.
In the figure: 1. the base, 2, cylinder A, 3, control button A, 4, control button B, 5, control button C, 6, motor A, 7, screw rod A, 8, lead screw cover A, 9, bearing housing A, 10, slide bar, 11, sliding sleeve, 12, sliding tray A, 13, cylinder B, 14, motor B, 15, screw rod B, 16, lead screw cover B, 17, bearing housing B, 18, sliding tray B, 19, fixed plate, 20, motor C, 21, runner, 22, tooth piece A, 23, carousel, 24, tooth piece B, 25, fixed block, 26, motor D, 27, fan, 28, connecting pipe, 29, diaphragm, 30, vent.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
Referring to fig. 1-2, the present invention provides a technical solution: a ventilation device for pig breeding comprises a base 1, columns A2 are fixedly installed on the outer walls of the upper ends of the left side and the right side of the base 1, a control button A3 is fixedly installed on the outer wall of the left side of the column A2, a control button B4 is fixedly installed on the lower side of the control button A3, a control button C5 is fixedly installed on the lower side of the control button B4, a motor A6 is fixedly installed on the outer wall of the upper end of the left side of the column A2, a screw A7 is rotatably installed on the lower end of the motor A2 in a penetrating mode, a screw sleeve A8 is rotatably sleeved on the outer wall of the screw A7, a bearing sleeve A9 is fixedly sleeved on the outer wall of the screw sleeve A8, a sliding rod 10 is fixedly installed inside the right side of the column A2, a sliding sleeve 11 is movably sleeved on the outer wall of the sliding rod 10, a sliding groove A12 is fixedly installed inside the column A2, a column B12 is fixedly installed on the inner sides of the sliding sleeve 11 and the, screw B15 outer wall rotates and cup joints screw cover B16, screw cover B16 outer wall is fixed and has been cup jointed bearing housing B17, cylinder B13 lower side wall fixed mounting has sliding tray B18, bearing housing B17 downside runs through sliding tray B18 fixed mounting has fixed plate 19, fixed plate 19 right side upper end outer wall fixed mounting has motor C20, motor C20 lower extreme runs through fixed plate 19 and rotates and installs runner 21, runner 21 outer wall fixed mounting has toothed block A22, fixed plate 19 center downside outer wall rotates and installs carousel 23, carousel 23 outer wall fixed mounting has toothed block B24, both fixed block 25 of fixed block 23 downside left and right sides fixed mounting all, fixed block 25 inside fixed mounting has motor D26, motor D26 downside rotates and installs fan 27, fixed block 25 left and right sides outer wall fixed connection has connecting pipe 28, cylinder A2 upper side outer wall fixed mounting has diaphragm 29, diaphragm 29 both sides inside fixed mounting has vent 30, vent 30 downside fixed connection connecting pipe 28.
In this embodiment, as shown in fig. 1 and fig. 2, by using a rotating structure, when ventilation is required, by pressing a control button A3, through a controller, controlling a motor A6 to operate, operating a motor A6 to drive a screw a7 to rotate, matching a screw a7 with a screw thread on an inner wall of a screw sleeve A8 through a thread cut on an outer wall to drive a screw a7 to rotate and move downward, moving a screw sleeve A8 downward to drive a bearing sleeve A9 to move downward, thereby driving a cylinder B13 to move downward in a sliding groove a12, driving a sliding sleeve 11 to slide downward on an outer wall of a sliding rod 10, driving a descending device to extract a smell more effectively in height, pressing a control button B4, through a controller, operating a motor B14 to drive a screw B15 to rotate, matching a screw B8 with a screw thread on an inner wall of a screw sleeve B16 through a thread cut on an outer wall to drive a screw B15 to rotate and move left and right, moving a screw sleeve B16 to drive a bearing sleeve B17 to move left and right, thereby driving a ventilation, the air draft effect is improved.
Wherein, the outer wall of screw A7 is cut with the screw thread, and the inner wall of lead screw cover A8 is cut with the screw thread that matches with screw A7 outer wall screw thread, constitutes rotating-structure.
In this embodiment, as shown in fig. 1 and fig. 2, by using a rotating structure, when ventilation is required, by pressing a control button A3, through a controller, controlling a motor A6 to operate, operating a motor A6 to drive a screw a7 to rotate, matching a screw a7 with a screw thread on an inner wall of a screw sleeve A8 through a thread cut on an outer wall to drive a screw a7 to rotate and move downward, moving a screw sleeve A8 downward to drive a bearing sleeve A9 to move downward, thereby driving a cylinder B13 to move downward in a sliding groove a12, driving a sliding sleeve 11 to slide downward on an outer wall of a sliding rod 10, driving a descending device to extract a smell more effectively in height, pressing a control button B4, through a controller, operating a motor B14 to drive a screw B15 to rotate, matching a screw B8 with a screw thread on an inner wall of a screw sleeve B16 through a thread cut on an outer wall to drive a screw B15 to rotate and move left and right, moving a screw sleeve B16 to drive a bearing sleeve B17 to move left and right, thereby driving a ventilation, the air draft effect is improved.
Wherein, the outer wall of screw B15 is cut with the screw thread, and the inner wall of lead screw cover B16 is cut with the screw thread that matches with screw B15 outer wall screw thread, constitutes rotating-structure.
In this embodiment, as shown in fig. 1 and fig. 2, by using a rotating structure, when ventilation is required, by pressing a control button A3, through a controller, controlling a motor A6 to operate, operating a motor A6 to drive a screw a7 to rotate, matching a screw a7 with a screw thread on an inner wall of a screw sleeve A8 through a thread cut on an outer wall to drive a screw a7 to rotate and move downward, moving a screw sleeve A8 downward to drive a bearing sleeve A9 to move downward, thereby driving a cylinder B13 to move downward in a sliding groove a12, driving a sliding sleeve 11 to slide downward on an outer wall of a sliding rod 10, driving a descending device to extract a smell more effectively in height, pressing a control button B4, through a controller, operating a motor B14 to drive a screw B15 to rotate, matching a screw B8 with a screw thread on an inner wall of a screw sleeve B16 through a thread cut on an outer wall to drive a screw B15 to rotate and move left and right, moving a screw sleeve B16 to drive a bearing sleeve B17 to move left and right, thereby driving a ventilation, the air draft effect is improved.
Wherein, the outer wall of runner 21 is fixedly installed with tooth piece A22, and carousel 23 outer wall is fixedly installed with the tooth piece B24 that cooperatees with tooth piece A22, constitutes rotating-structure.
In this embodiment, as shown in fig. 1 and 2, through rotating-structure, after adjusting the position, press control button C5 and pass through controller control motor C20 and operate, motor C20 operates and drives runner 21 and rotate, runner 21 rotates through outer wall fixed mounting's tooth piece a22 and rotates, tooth piece a22 rotates and drives tooth piece B24 and rotates, tooth piece B24 rotates and drives carousel 23 and rotates, carousel 23 rotates and drives downside fixed mounting's fixed block 25 and rotates, fan 27 in the left and right sides fixed block 25 directly rotates convulsions under the circumstances that motor D26 switches on external power supply, rotating-type convulsions have improved the effect of convulsions, the time of convulsions has been reduced, ventilation unit's practicality has been improved.
The input ends of the control button A3, the control button B4 and the control button C5 are electrically connected with an external power supply through wires, the output end of the control button A3 is electrically connected with the input end of the motor A6 through wires, the output end of the control button B4 is electrically connected with the input end of the motor B14 through wires, the output end of the control button C5 is electrically connected with the input end of the motor C20 through wires, and the input end of the motor D26 is electrically connected with the external power supply through wires.
The working principle is as follows: when ventilation is needed, a control button A3 is pressed to control the operation of a motor A6 through a controller, the motor A6 operates to drive a screw A7 to rotate, the screw A7 is matched with the screw on the inner wall of a screw sleeve A8 through the cut thread on the outer wall to drive a screw A7 to rotate and move downwards, a screw sleeve A8 moves downwards to drive a bearing sleeve A9 to move downwards so as to drive a cylinder B13 to move downwards in a sliding groove A12 and drive a sliding sleeve 11 to slide downwards on the outer wall of a sliding rod 10 so as to drive the height of the ventilation device to descend and more effectively extract smell, a control button B4 is pressed to control the operation of the motor B14 through the controller, the motor B14 drives a screw B15 to rotate, the screw B15 is matched with the screw on the inner wall of the screw sleeve B16 through the cut thread on the outer wall to drive the screw B15 to move left and right, the screw sleeve B16 drives a bearing sleeve B17 to move left and right, so as, after the position is adjusted, a control button C5 is pressed to control the operation of a motor C20 through a controller, the motor C20 operates to drive a rotating wheel 21 to rotate, the rotating wheel 21 rotates through a tooth block A22 fixedly installed on the outer wall to rotate, the tooth block A22 rotates to drive a tooth block B24 to rotate, a tooth block B24 rotates to drive a rotating disc 23 to rotate, the rotating disc 23 rotates to drive a fixed block 25 fixedly installed on the lower side to rotate, the fans 27 in the fixed blocks 25 on the left side and the right side directly rotate for air draft under the condition that the motor D26 is connected with an external power supply, the air draft in a rotating mode improves the air draft effect, and the air draft.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (5)

1. The utility model provides a pig is bred and uses ventilation unit, includes base (1), its characterized in that: the cylinder A (2) is fixedly mounted on the outer walls of the upper ends of the left side and the right side of the base (1), the control button A (3) is fixedly mounted on the outer wall of the left side of the cylinder A (2), the control button B (4) is fixedly mounted on the lower side of the control button A (3), the control button C (5) is fixedly mounted on the lower side of the control button B (4), the motor A (6) is fixedly mounted on the outer wall of the upper end of the left side of the cylinder A (2), the lower end of the motor A (6) penetrates through the cylinder A (2) to be rotatably mounted with the screw rod A (7), the outer wall of the screw rod A (7) is rotatably sleeved with the screw rod sleeve A (8), the outer wall of the screw rod sleeve A (8) is fixedly sleeved with the bearing sleeve A (9), the slide rod (10) is fixedly mounted inside the right side of the cylinder A (2), the slide sleeve (11), sliding sleeve (11) and bearing housing A (9) inboard run through sliding tray A (12) fixed mounting have cylinder B (13), the inside fixed mounting in cylinder B (13) right side has motor B (14), motor B (14) left side runs through cylinder B (13) and rotates and install screw rod B (15), screw rod B (15) outer wall rotates and has cup jointed lead screw cover B (16), lead screw cover B (16) outer wall fixed cup joint has bearing housing B (17), cylinder B (13) lower side wall fixed mounting has sliding tray B (18), bearing housing B (17) downside runs through sliding tray B (18) fixed mounting has fixed plate (19), fixed plate (19) right side upper end outer wall fixed mounting has motor C (20), motor C (20) lower extreme runs through fixed plate (19) and rotates and installs runner (21), runner (21) outer wall fixed mounting has tooth piece A (22), fixed plate (19) center downside outer wall rotates and installs carousel (23), carousel (23) outer wall fixed mounting has tooth piece B (24), the equal fixed mounting in the both sides of carousel (23) downside has fixed block (25), the inside fixed mounting of fixed block (25) has motor D (26), motor D (26) downside rotates and installs fan (27), fixed block (25) left and right sides outer wall fixedly connected with is managed (28) even, cylinder A (2) upside outer wall fixed mounting has diaphragm (29), the inside fixed mounting in diaphragm (29) both sides has vent (30), vent (30) downside fixed connection is managed (28) even.
2. The ventilation device for pig breeding according to claim 1, characterized in that: the outer wall of the screw A (7) is cut with threads, and the inner wall of the screw rod sleeve A (8) is cut with threads matched with the threads on the outer wall of the screw A (7) to form a rotating structure.
3. The ventilation device for pig breeding according to claim 1, characterized in that: the outer wall of the screw B (15) is cut with threads, and the inner wall of the screw rod sleeve B (16) is cut with threads matched with the threads on the outer wall of the screw B (15) to form a rotating structure.
4. The ventilation device for pig breeding according to claim 1, characterized in that: the outer wall fixed mounting of runner (21) has tooth piece A (22), carousel (23) outer wall fixed mounting has tooth piece B (24) with tooth piece A (22) matched with, constitutes revolution mechanic.
5. The ventilation device for pig breeding according to claim 1, characterized in that: the input of control button A (3), control button B (4) and control button C (5) passes through the wire and constitutes the electricity with external power source to be connected, the output of control button A (3) passes through the wire with the input of motor A (6) and constitutes the electricity and be connected, the output of control button B (4) passes through the wire with the input of motor B (14) and constitutes the electricity and be connected, the output of control button C (5) passes through the wire with the input of motor C (20) and constitutes the electricity and be connected, the input of motor D (26) passes through the wire with external power source and constitutes the electricity and be connected.
CN202020720731.4U 2020-05-06 2020-05-06 Ventilation device for pig breeding Expired - Fee Related CN212087494U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020720731.4U CN212087494U (en) 2020-05-06 2020-05-06 Ventilation device for pig breeding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020720731.4U CN212087494U (en) 2020-05-06 2020-05-06 Ventilation device for pig breeding

Publications (1)

Publication Number Publication Date
CN212087494U true CN212087494U (en) 2020-12-08

Family

ID=73618150

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202020720731.4U Expired - Fee Related CN212087494U (en) 2020-05-06 2020-05-06 Ventilation device for pig breeding

Country Status (1)

Country Link
CN (1) CN212087494U (en)

Similar Documents

Publication Publication Date Title
CN212087494U (en) Ventilation device for pig breeding
CN208533187U (en) Automatic towel machine
CN108386927B (en) Intelligent furniture cabinet integrates
CN208651295U (en) A kind of bladeless fan having a display function
CN112628871A (en) Air conditioner with air purification function
CN110145482A (en) Fan lamp
CN215446654U (en) Sterilization volute, fan equipment and air conditioner
CN202292350U (en) Multifunctional electric polishing machine control box
CN209671246U (en) A kind of electric fan with champignon and humidification function
CN110822609B (en) Air purifying humidifier
CN203362562U (en) Axial-flow fan with solar power supply
CN112432280A (en) Air supply device and air outlet control method thereof
CN209459140U (en) A kind of bladeless fan of energy-saving cool-down
CN208296190U (en) A kind of energy conservation and environmental protection dedusting ventilation equipment
CN109826809A (en) A kind of electric fan with champignon and humidification function
CN102380811B (en) Multifunctional electric polishing machine control box
CN206191364U (en) Rotation type LED shot-light with automatic heat dissipation function
CN215957642U (en) Yak is bred with breeding house convenient to ventilate
CN219255952U (en) Cultural stone curing room
CN219797323U (en) Solar air conditioner heating and ventilation heating equipment
CN211345681U (en) Humidifier with directional air-out function for office
CN203291201U (en) Folding fan humidifying beauty massager
CN213146211U (en) High-efficient heat dissipation LED lamp
CN219392535U (en) Use stable constant temperature and humidity case
CN220524265U (en) Indoor intelligent humidifying device

Legal Events

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

Granted publication date: 20201208

Termination date: 20210506