CN218564020U - Novel ventilation fan is used to non-colliery mountain safety - Google Patents
Novel ventilation fan is used to non-colliery mountain safety Download PDFInfo
- Publication number
- CN218564020U CN218564020U CN202222167048.4U CN202222167048U CN218564020U CN 218564020 U CN218564020 U CN 218564020U CN 202222167048 U CN202222167048 U CN 202222167048U CN 218564020 U CN218564020 U CN 218564020U
- Authority
- CN
- China
- Prior art keywords
- fan
- groove
- sets
- brush
- seted
- 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
Links
- 238000009423 ventilation Methods 0.000 title claims abstract description 35
- 239000000428 dust Substances 0.000 claims abstract description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 42
- 239000003245 coal Substances 0.000 claims description 15
- 238000005096 rolling process Methods 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 7
- 241000883990 Flabellum Species 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000036541 health Effects 0.000 description 3
- 208000028571 Occupational disease Diseases 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 238000011012 sanitization Methods 0.000 description 1
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a novel ventilation fan is used to non-colliery mountain safety, including bellows shell and clean subassembly, clean subassembly sets up on the bellows shell, clean subassembly is including supporting cover and brush, be provided with the roller bearing in the support cover, the walking groove has been seted up on the roller bearing, be provided with the motor in the support cover, all be provided with the gear on the output shaft of roller bearing one end and motor, two sets of gear mesh mutually, the stroke groove has been seted up on the support cover, the stroke inslot is provided with the loose axle, loose axle one end sets up at the walking inslot, the loose axle other end is provided with the mounting panel, T type groove has been seted up in the mounting panel, T type inslot is provided with the brush, be provided with two sets of dust guards in the bellows shell, the brush contacts with a set of dust guard wherein, be provided with the fan in the bellows shell, the fan is located between two sets of dust guards. The utility model provides an in the current fan working process, the dust gets into inside attached flabellum of fan and the fan, makes fan work efficiency reduce, does not reach the problem that the ventilation required.
Description
Technical Field
The utility model relates to a non-colliery mountain safety device technical field, more specifically say, in particular to novel non-colliery mountain is ventilation fan for safety.
Background
The fan of airing exhaust under non-colliery mountain environment, dust particle is more, has a lot of dusts to adhere to inside fan flabellum and the fan when discharging through the fan for the performance just descends by a wide margin after the fan uses a period, makes fan work efficiency reduce, does not reach the ventilation and requires influence result of use.
The utility model patent for CN 20192196660.2 discloses a novel ventilation fan is used to non-coal mine safety, and this fan passes through the air intake with gaseous suction and discharges from the air outlet, and the dust in the air is adsorbed by the active carbon plate on the dustproof adsorption equipment and is reduced the inside dust of connecting shell and adhere to, and it can to use up to close the fan, can take off the go-between from the air intake through fixation nut after adsorbing a large amount of dust on the active carbon plate and install the use again after the sanitization. However, although the traditional fan reduces the dust in the air to enter the fan and the fan blades attached to the inside of the fan, the environment is special, the dust is more, the active carbon plate works effectively and is short, and frequent cleaning is needed, so that waste of water resources and human resources is caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a novel ventilation fan is used to non-colliery mountain safety aims at solving current fan working process, and the dust gets into inside attached flabellum of fan and the fan, makes fan work efficiency reduce, does not reach the technical problem that the ventilation required.
The utility model discloses a realize like this:
non-colliery mountain ventilation fan for safety, including bellows shell and clean subassembly, clean subassembly sets up on the bellows shell, clean subassembly is including supporting cover and brush, be provided with the roller bearing in the support cover, the walking groove has been seted up on the roller bearing, be provided with the motor in the support cover, roller bearing one end with all be provided with the gear on the output shaft of motor, it is two sets of the gear meshes mutually, the stroke groove has been seted up on the support cover, the stroke inslot is provided with the loose axle, loose axle one end sets up at the walking inslot, the loose axle other end is provided with the mounting panel, set up T type groove in the mounting panel, T type inslot is provided with the brush, be provided with two sets of dust guards in the bellows shell, the brush with one of them set of the dust guard contact, be provided with the fan in the bellows shell, the fan is located two sets of between the dust guard.
As the utility model discloses a preferred technical scheme, the ring channel has been seted up to bellows shell one end, be provided with the ring canal in the ring channel, be provided with multiunit atomizer on the ring canal, the one end of ring canal is provided with the flexible glue pipe, be provided with the suction pump in the water tank, the other end setting of flexible glue pipe is on the suction pump.
As the utility model discloses an optimized technical scheme, the activity is provided with the supporting seat on the fan case shell, be provided with spacing on the supporting seat, the circular arc groove has been seted up on the spacing, be provided with the bolt on the fan case shell, the bolt sets up at the circular arc inslot.
As the utility model discloses a preferred technical scheme, the supporting seat bottom is provided with bearing, bearing sets up on the water tank, supporting seat bottom threaded connection has the screw rod.
As the utility model discloses a preferred technical scheme, the screw rod top is provided with the handle, the screw rod bottom is provided with the rubber pad, the rubber pad with the water tank contact.
As a preferred technical scheme of the utility model, be provided with two sets of antifriction bearing on the loose axle, it is two sets of antifriction bearing with the contact of support cover inner wall.
As the utility model discloses a preferred technical scheme, be provided with spacing subassembly on the mounting panel, spacing subassembly includes the reset shaft, logical groove has been seted up on the mounting panel, the reset shaft sets up logical inslot, the cover is equipped with reset spring on the reset shaft, reset shaft one end is provided with the fixture block, T type groove has been seted up on the reset shaft, T type inslot is provided with the brush, the spacing groove has been seted up on the brush, the fixture block card is established the spacing inslot.
As the utility model discloses a preferred technical scheme, the water tank bottom is provided with the multiunit universal wheel.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the dust guard adsorbs a large amount of dust in the process of isolating the dust from entering the fan, and the roller drives the brush to rub back and forth on the dust guard under the arrangement of the cleaning assembly, so that the dust adsorbed on the dust guard is indirectly cleaned; two groups of dust-proof plates can be drawn out from the bellows shell, so that later-stage replacement is convenient, under the arrangement of a plurality of groups of atomizing nozzles, atomized water is delivered to the air through the ventilation process of the fan after the water is atomized, the fan can blow the atomized water to a farther place to enable the atomized water to be distributed more widely, and the dust-settling effect is maximized; effectively play the dust fall effect in the ventilation process.
2. Under the setting of supporting seat, can adjust the fan mouth from top to bottom, under the setting of bearing, can adjust the ventilation position with bellows shell side to side rotation, satisfy the ventilation work of fan different positions. Because the long-time friction with the dust guard of brush can make the brush wearing and tearing destroy, under the setting of spacing subassembly, can convenient and fast change the brush.
Drawings
Fig. 1 is a schematic perspective view of a novel ventilation fan for non-coal mine safety of the present invention;
fig. 2 is an explosion structure diagram of the novel ventilation fan for non-coal mine safety of the utility model;
fig. 3 is a schematic structural view of a limiting frame in the novel ventilation fan for non-coal mine safety of the invention;
fig. 4 is a schematic structural view of a cleaning assembly in the novel ventilation fan for non-coal mine safety of the present invention;
fig. 5 is a schematic structural view of a limiting component in the novel ventilation fan for non-coal mine safety of the present invention;
the corresponding relation between the names of the attachments and the numbers of the attached figures in the figure:
101. a universal wheel; 102. a water tank; 103. a wind box housing; 104. a threaded cap; 105. a water pump; 106. a soft rubber tube; 107. a load bearing; 108. a ring pipe; 109. an atomizing spray head; 110. an annular groove; 111. a support housing; 112. a water inlet; 114. a dust guard; 115. an arc groove; 116. a limiting frame; 117. a supporting base; 118. a grip; 119. a screw; 120. a rubber pad; 121. a fan; 122. a gear; 123. a motor; 124. a movable shaft; 125. mounting a plate; 126. a brush; 127. a rolling bearing; 128. a traveling groove; 129. a roller; 130. a limiting groove; 131. a through groove; 132. a clamping block; 133. a return spring; 134. a T-shaped groove; 135. a reset shaft; 136. a stroke slot; 137. and (4) bolts.
Detailed Description
In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention will be combined below to clearly and completely describe the technical solutions in the embodiments of the present invention.
Example (b):
referring to fig. 1 and 2: the utility model provides a novel ventilation fan is used to non-coal mine mountain safety, including bellows shell 103 and clean subassembly, clean subassembly sets up on bellows shell 103, clean subassembly is including supporting cover 111 and brush 126, be provided with roller 129 in the supporting cover 111, the last walking groove 128 of having seted up of roller 129, be provided with motor 123 in the supporting cover 111, all be provided with gear 122 on the output shaft of roller 129 one end and motor 123, two sets of gear 122 mesh mutually, the stroke groove 136 has been seted up on the supporting cover 111, be provided with loose axle 124 in the stroke groove 136, loose axle 124 one end sets up in walking groove 128, the loose axle 124 other end is provided with mounting panel 125, T type groove 134 has been seted up in mounting panel 125, be provided with brush 126 in the T type groove 134, be provided with two sets of dust guard 114 in the bellows shell 103, brush 126 contacts with a set of dust guard 114 among them, be provided with fan 121 in the bellows shell 103, fan 121 is located between two sets of dust guard 114.
Because the environment of a non-coal mine is special, when the fan is used for ventilation, a large amount of dust can be adsorbed on fan blades, and the working efficiency is reduced, two groups of dust-proof plates 114 are arranged in the air box shell 103, the fan 121 is isolated between the two groups of dust-proof plates 114, so that the adsorption of the fan 121 by the dust is effectively reduced, however, the dust-proof plates 114 are in long-time work, particularly, the dust-proof plates 114 which are fed with air can be adsorbed or blocked after a large amount of dust is adsorbed, so that the air is not circulated, and under the arrangement of a cleaning component, the roller 129 drives the brush 126 to rub back and forth on the dust-proof plates 114, so that the dust adsorbed on the dust-proof plates 114 is indirectly cleaned; the specific cleaning steps include that the fan 121 drives the roller 129 to rotate, the movable shaft 124 displaces in the traveling groove 128 of the roller 129, so that the movable shaft 124 makes reciprocating linear motion in the stroke groove 136 on the support cover 111, the movable shaft 124 is connected with the mounting plate 125, the brush 126 in the mounting plate 125 rubs back and forth on the dust-proof plate 114 to clean dust, the dust-proof plate 114 in contact with the brush 126 is the dust-proof plate 114 in the air inlet, and the two groups of dust-proof plates 114 can be drawn out from the bellows shell 103 to facilitate later replacement.
Referring to fig. 2, one end of the bellows housing 103 is provided with an annular groove 110, the annular groove 110 is internally provided with a collar 108, the collar 108 is provided with a plurality of groups of atomizing nozzles 109, one end of the collar 108 is provided with a soft rubber tube 106, the water tank 102 is internally provided with a water pump 105, and the other end of the soft rubber tube 106 is arranged on the water pump 105.
Due to the working environment, a large amount of dust is generated, the working place is polluted, the human health is harmed, occupational diseases are caused, and the human health is seriously harmed after people suck the dust for a long time; under the arrangement of a plurality of groups of atomizing nozzles 109, atomized water is delivered to the air in the ventilation process of the fan after being atomized, and the fan can blow the atomized water farther to enable the atomized water to be distributed more widely, so that the dust settling effect is maximized; the dust falling function can be effectively realized in the ventilation process, the floating respiratory dust contained in the air is reduced, the body health of workers is effectively protected, the occupational disease risk is reduced, and under the arrangement of the soft rubber pipe 106, the fan is not limited when the blowing direction of the fan is adjusted; the specific working steps are that water is added into the water tank 102 from the water inlet 112, the threaded cover 104 is covered, the water is sent into the ring pipe 108 through the soft rubber pipe 106 by the water pump 105 and sprayed out by the atomizing spray head 109, and then the water is sent out by the fan to enlarge the dust fall area.
Referring to fig. 2, a support seat 117 is movably disposed on the bellows housing 103, a limit bracket 116 is disposed on the support seat 117, an arc groove 115 is disposed on the limit bracket 116, a bolt 137 is disposed on the bellows housing 103, and the bolt 137 is disposed in the arc groove 115. Under the setting of supporting seat 117, can adjust the fan mouth from top to bottom, realize the ventilation work of different positions, under spacing 116 and bolt 137's setting, adjust to suitable position after, screw up bolt 137, fix fan case shell 103, make its steady operation.
Referring to fig. 2, the bottom end of the supporting seat 117 is provided with a bearing 107, the bearing 107 is disposed on the water tank 102, and the bottom end of the supporting seat 117 is connected with a screw 119 through a thread. Under the setting of bearing 107, can with fan case 103 left and right sides rotation, adjust the ventilation position, satisfy the ventilation work of the different positions of fan, under the setting of screw rod 119, adjust fan case 103 to suitable position after, screw rod 119 is screwed up and is fixed with it.
Referring to fig. 2, a handle 118 is disposed at the top end of the screw 119, a rubber pad 120 is disposed at the bottom end of the screw 119, and the rubber pad 120 contacts the water tank 102. Under rubber pad 120's setting, can avoid screw rod 119 and the direct hard contact of water tank 102 to lead to water tank 102 wearing and tearing, can also increase frictional force simultaneously for the direction finder is more firm at the course of the work, is holding under the setting of 118, can be more laborsaving when adjusting screw rod 119.
In some embodiments, referring to fig. 2, two sets of rolling bearings 127 are disposed on the movable shaft 124, and the two sets of rolling bearings 127 are in contact with the inner wall of the support housing 111. With the arrangement of the two sets of rolling bearings 127, the friction force during the reciprocating motion of the movable shaft 124 is reduced, and the consumption is reduced, so that the cleaning work of the brush 126 is more stable.
Referring to fig. 2, a limiting assembly is disposed on the mounting plate 125, the limiting assembly includes a reset shaft 135, a through groove 131 is disposed on the mounting plate 125, the reset shaft 135 is disposed in the through groove 131, a reset spring 133 is sleeved on the reset shaft 135, a clamping block 132 is disposed at one end of the reset shaft 135, a T-shaped groove 134 is disposed on the reset shaft 135, a brush 126 is disposed in the T-shaped groove 134, a limiting groove 130 is disposed on the brush 126, and the clamping block 132 is clamped in the limiting groove 130. Because brush 126 can make brush 126 wearing and tearing destroy with dust guard 114 friction for a long time, under the setting of spacing subassembly, can convenient and fast change brush 126, concrete operation is, pull out reset shaft 135 for fixture block 132 withdraws from spacing groove 130 on the brush 126, take brush 126 out from T type groove 134 again, change, brush 126 after will changing is installed back T type groove 134, fixture block 132 can be under reset spring 133's effect, with its top can spacing groove 130 in, accomplish the change work.
Referring to fig. 2, a plurality of sets of universal wheels 101 are disposed at the bottom of the water tank 102. Under the setting of universal wheel 101, the position that needs the ventilation is carried to the fan to the convenience, reduces manpower resources waste and convenient and fast, with the required position back of fan transport, steps on universal wheel 101 brake, prevents that the fan from appearing removing in the course of the work.
The utility model discloses an operating procedure does:
firstly, water is added into the water tank 102 from the water inlet 112, the threaded cover 104 is covered, the water is sent into the ring pipe 108 by the water pump 105 through the soft rubber pipe 106 and is sprayed out by the atomizing nozzle 109, and then the water is sent out by the fan.
According to actual conditions, the air outlet of the fan can be adjusted, the control bolt 137 adjusts the air outlet up and down, and the control screw 119 adjusts the air outlet left and right.
The specific steps when replacing the brush 126 are to pull out the reset shaft 135, so that the fixture block 132 is withdrawn from the limit groove 130 on the brush 126, then the brush 126 is pulled out from the T-shaped groove 134 for replacement, the replaced brush 126 is installed back into the T-shaped groove 134, and the fixture block 132 is pushed up into the limit groove 130 under the action of the reset spring 133 to complete the replacement work.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a novel ventilation fan is used to non-colliery mountain safety which characterized in that: including bellows case (103) and clean subassembly, clean subassembly sets up on bellows case (103), clean subassembly is including supporting cover (111) and brush (126), be provided with roller bearing (129) in supporting cover (111), walking groove (128) have been seted up on roller bearing (129), be provided with motor (123) in supporting cover (111), roller bearing (129) one end with all be provided with gear (122) on the output shaft of motor (123), it is two sets of gear (122) mesh mutually, stroke groove (136) have been seted up on supporting cover (111), be provided with loose axle (124) in stroke groove (136), loose axle (124) one end sets up in walking groove (128), loose axle (124) other end is provided with mounting panel (125), T type groove (134) have been seted up in mounting panel (125), be provided with brush (126) in T type groove (134), be provided with two sets of dust guard (114) in bellows case (103), brush (126) and one of them is a set of dust guard (114) the contact, be provided with fan case (103), be provided with fan case (121), fan (121) are located between two sets of dust guard (114).
2. The novel non-coal mine safety ventilation fan as claimed in claim 1, wherein: an annular groove (110) is formed in one end of the air box shell (103), an annular pipe (108) is arranged in the annular groove (110), a plurality of groups of atomizing spray heads (109) are arranged on the annular pipe (108), a soft rubber pipe (106) is arranged at one end of the annular pipe (108), a water suction pump (105) is arranged in the water tank (102), and the other end of the soft rubber pipe (106) is arranged on the water suction pump (105).
3. The novel non-coal mine safety ventilation fan as claimed in claim 2, wherein: supporting seat (117) are movably arranged on the wind box shell (103), limiting frames (116) are arranged on the supporting seat (117), arc grooves (115) are formed in the limiting frames (116), bolts (137) are arranged on the wind box shell (103), and the bolts (137) are arranged in the arc grooves (115).
4. The novel non-coal mine safety ventilation fan according to claim 3, characterized in that: the supporting seat (117) bottom is provided with bearing (107), bearing (107) set up on water tank (102), supporting seat (117) bottom threaded connection has screw rod (119).
5. The novel non-coal mine safety ventilation fan as claimed in claim 4, wherein: the water tank is characterized in that a handle (118) is arranged at the top end of the screw rod (119), a rubber pad (120) is arranged at the bottom end of the screw rod (119), and the rubber pad (120) is in contact with the water tank (102).
6. The novel non-coal mine safety ventilation fan according to claim 1, characterized in that: two groups of rolling bearings (127) are arranged on the movable shaft (124), and the two groups of rolling bearings (127) are in contact with the inner wall of the support cover (111).
7. The novel non-coal mine safety ventilation fan as claimed in claim 1, wherein: be provided with spacing subassembly on mounting panel (125), spacing subassembly is including restoring to the throne axle (135), logical groove (131) have been seted up on mounting panel (125), it sets up to restore to the throne axle (135) lead to in groove (131), it is equipped with reset spring (133) to restore to the throne to overlap on axle (135), it is provided with fixture block (132) to restore to the throne axle (135) one end, it has seted up T type groove (134) to restore to the throne on axle (135), be provided with brush (126) in T type groove (134), spacing groove (130) have been seted up on brush (126), fixture block (132) card is established in spacing groove (130).
8. The novel non-coal mine safety ventilation fan according to claim 2, characterized in that: and a plurality of groups of universal wheels (101) are arranged at the bottom of the water tank (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222167048.4U CN218564020U (en) | 2022-08-17 | 2022-08-17 | Novel ventilation fan is used to non-colliery mountain safety |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222167048.4U CN218564020U (en) | 2022-08-17 | 2022-08-17 | Novel ventilation fan is used to non-colliery mountain safety |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218564020U true CN218564020U (en) | 2023-03-03 |
Family
ID=85309966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222167048.4U Expired - Fee Related CN218564020U (en) | 2022-08-17 | 2022-08-17 | Novel ventilation fan is used to non-colliery mountain safety |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218564020U (en) |
-
2022
- 2022-08-17 CN CN202222167048.4U patent/CN218564020U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN218564020U (en) | Novel ventilation fan is used to non-colliery mountain safety | |
| CN210874691U (en) | Active carbon air purification equipment | |
| CN209020126U (en) | A kind of furniture processing workshop dust separation system | |
| CN216440255U (en) | Environmental protection mechanical equipment with dust removal function | |
| CN112535441A (en) | Practical indoor roof sweeper | |
| CN212962085U (en) | Negative pressure formula air purification device is used in workshop | |
| CN210332128U (en) | Waste gas treatment device | |
| CN215863949U (en) | Mobilizable air purifier | |
| CN213570864U (en) | Conveniently concentrate scutching device for weaving of arranging miscellaneous | |
| CN109092557A (en) | Electrostatic precipitator is used in a kind of disengaging of the plant personnel that cleannes are high | |
| CN211706318U (en) | Movable spraying dust device | |
| CN209531140U (en) | A kind of interior cleaner | |
| CN209715787U (en) | A kind of computer card cleaning plant | |
| CN211562175U (en) | Automatic dust recovery equipment | |
| CN209753494U (en) | Cleaning and disinfecting robot | |
| CN208879264U (en) | Central air conditioning tuber pipe washs dust absorption robot | |
| CN211204296U (en) | Air purification device for environmental protection | |
| CN221950877U (en) | Dust collecting equipment for clean purification engineering | |
| CN219111894U (en) | Waste gas treatment device for carbon sequestration | |
| CN210902805U (en) | Follow-on movable dust removal environmental protection equipment | |
| CN217813567U (en) | Ventilation equipment for mining | |
| CN221442884U (en) | Household electric fan with dust blocking function | |
| CN217357404U (en) | Blowing assembly and air treatment equipment | |
| CN220038665U (en) | Energy-saving exhaust fan | |
| CN215723955U (en) | Air purifier who possesses filtering mechanism from clearance function |
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: 20230303 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |