CN212337351U - Stopping agent sprinkler - Google Patents
Stopping agent sprinkler Download PDFInfo
- Publication number
- CN212337351U CN212337351U CN202020778121.XU CN202020778121U CN212337351U CN 212337351 U CN212337351 U CN 212337351U CN 202020778121 U CN202020778121 U CN 202020778121U CN 212337351 U CN212337351 U CN 212337351U
- Authority
- CN
- China
- Prior art keywords
- stopping agent
- wall
- motor
- measuring cylinder
- stirring
- 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
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 61
- 238000003756 stirring Methods 0.000 claims abstract description 57
- 238000002347 injection Methods 0.000 claims abstract description 34
- 239000007924 injection Substances 0.000 claims abstract description 34
- 238000005507 spraying Methods 0.000 claims abstract description 15
- 125000003003 spiro group Chemical group 0.000 claims description 10
- 238000013016 damping Methods 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 32
- 238000004140 cleaning Methods 0.000 abstract description 12
- 238000005065 mining Methods 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 2
- 238000005728 strengthening Methods 0.000 abstract description 2
- 239000003112 inhibitor Substances 0.000 description 23
- 239000003245 coal Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- 238000002156 mixing Methods 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 3
- -1 halide salt Chemical class 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 235000011148 calcium chloride Nutrition 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 238000007348 radical reaction Methods 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
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Abstract
The utility model belongs to the technical field of mining devices, in particular to a stopping agent spraying device, which comprises a cart plate, the top of the cart plate is screwed with a stirring barrel, the top of the stirring barrel is fixedly connected with a top cover through a flange, the top wall of the top cover is screwed with a motor, the output shaft of the motor is fixedly connected with the top end of a stirring shaft, the top of the top cover is screwed with a measuring tool mounting frame, a measuring cylinder is fixedly mounted on the measuring tool mounting frame, the bottom of the measuring cylinder is provided with a stopping agent output port, a stopping agent injection pipe is communicated and clamped between the top wall and the bottom wall of the top cover, the top of the stopping agent injection pipe is in threaded connection with a stopping agent injection valve, a water supply pipe connector is communicated and clamped between the top wall and the bottom wall of the top cover, the inner bottom wall of the stirring barrel is provided with an ultrasonic transducer, the bottom left side wall of the stirring, this device can play the additional strengthening to the mixture of stopping agent and water, promotes the cleaning performance and the speed of agitator.
Description
Technical Field
The utility model belongs to the technical field of mining device, concretely relates to hinder chemical agent sprinkler.
Background
The inhibitor is one of catalysts, and is called a inhibitor when the action of the catalyst slows down the reaction rate, and is also called a negative catalyst. The halide salt inhibitor is mainly a water-absorbing inorganic salt containing halogen elements, wherein the most common ones are aqueous solutions of CaCl2, MgCl2 and NaCl. These inhibitors can form a water film layer on the surface of the coal body to block oxygen from contacting the coal body, and can keep the coal in a moisture-containing state. Because the halogen salt inhibitor contains water, the water absorbs heat during vaporization to cool the coal body and reduce the temperature rise rate of the coal in the coal spontaneous combustion process, thereby inhibiting the spontaneous combustion of the coal to a certain extent. Meanwhile, the coal treated by the halogen salt inhibitor reduces functional groups in the coal oxidation reaction, is beneficial to preventing free radical reaction and inhibiting the oxidation reaction speed, and is widely applied to mining areas.
Compared with the prior art the problem that exists:
the spraying of the inhibitor requires a special spraying device, but the existing spraying device has improvements on the mixing effect between the inhibitor and water and the cleaning effect and speed after use.
SUMMERY OF THE UTILITY MODEL
To solve the problems set forth in the background art described above. The utility model provides a hinder agent sprinkler has and plays the additional strengthening to the mixed effect of hindering agent and water, promotes the cleaning performance and the characteristics of speed of agitator.
In order to achieve the above object, the utility model provides a following technical scheme: a stopping agent sprinkler which characterized in that: the device comprises a cart plate, wherein wheels are connected to the front side and the rear side of the cart plate through wheel shafts, a cart rod is screwed on the right side wall of the cart plate, a stirring barrel is screwed on the top of the cart plate, the top of the stirring barrel is fixedly connected with a top cover through a flange, a motor is screwed on the top wall of the top cover, an output shaft of the motor is fixedly connected with the top end of the stirring shaft, stirring blades are fixedly arranged on the outer wall of the stirring shaft, a measuring tool mounting frame is screwed on the top of the top cover, a measuring cylinder is fixedly mounted on the measuring tool mounting frame, a stopping agent output port is formed in the bottom of the measuring cylinder, a stopping agent injection pipe is communicated and clamped between the top wall and the bottom wall of the top cover, a stopping agent injection valve is connected to the top of the stopping agent injection pipe through threads, the top of the stopping agent injection valve is connected with a stopping agent output port water supply pipe through, the flowmeter is installed at the top of delivery pipe connector, the inner diapire of agitator is equipped with ultrasonic transducer, the bottom left side wall of agitator link up and integrated into one piece has the drain pipe, the left end of drain pipe passes through the flange and has the input tube fixed connection of booster pump, the top spiro union of shallow board has controlling means, the top spiro union of shallow board has hose shower nozzle to deposit the case.
Preferably, the top of the top cover is welded with a carrying handle.
Preferably, the motor is a brushless direct current motor.
Preferably, the measuring cylinder is a transparent PVC measuring cylinder, and the outer wall of the measuring cylinder is carved with capacity scales.
Preferably, controlling means includes controlling means installation pole, the top spiro union of controlling means installation pole has the damping bearing frame, the inner chamber joint of damping bearing frame has the pivot, the top spiro union of pivot has the controller.
Preferably, the controller is provided with a motor switch button motor speed regulation knob, a booster pump switch button and an ultrasonic transducer switch button.
Preferably, a cover is fixedly connected to the top of the hose spray head storage box through a hinge.
Preferably, the top of the cart plate is screwed with a stopping agent storage cabinet.
Compared with the prior art, the beneficial effects of the utility model are that:
the motor is turned on through the motor switch button, the ultrasonic transducer is turned on through the ultrasonic transducer switch button, the motor drives the stirring shaft and the stirring blades to stir the stopping agent and the water in the stirring barrel, meanwhile, the ultrasonic transducer utilizes physical effects such as cavitation, radiation pressure, acoustic flow and the like when ultrasonic waves are transmitted in the cleaning liquid to play a role in enhancing the mixing effect of the stopping agent and the water, the components of the stopping agent remaining on the inner wall of the stirring barrel can be stripped during cleaning, and the cleaning effect and the cleaning speed of the stirring barrel are improved;
the stopping agent is poured into the measuring cylinder, the pouring amount can be quickly determined according to the capacity scale of the outer wall of the measuring cylinder, after the amount of the stopping agent poured into the measuring cylinder reaches the required amount of scale marks, the stopping agent injection valve can be opened, the stopping agent in the measuring cylinder enters the stopping agent injection pipe through the stopping agent injection valve and is injected into the stirring barrel, the operation is simple and convenient, and the quantification and the injection of the stopping agent are facilitated;
the device is also provided with a hose spray head storage box and a stopping agent storage cabinet, so that the hose and the spray head for spraying and the stopping agent to be used can be conveniently stored.
The parts of the device not involved are the same as or can be implemented using prior art.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of an axial measurement structure of the present invention;
fig. 2 is a schematic front sectional view of the present invention.
In the figure: 100 trolley plates, 110 wheels, 120 trolley rods, 200 stirring barrels, 201 liquid outlet pipes, 210 top covers, 211 carrying handles, 220 motors, 230 stirring shafts, 231 stirring blades, 300 gauge mounting frames, 310 measuring cylinders, 311 stopping agent output ports, 320 stopping agent injection pipes, 330 stopping agent injection valves, 400 water supply pipe connectors, 410 flow meters, 500 ultrasonic transducers, 600 pressurizing pumps, 700 control devices, 710 control device mounting rods, 720 damping bearing seats, 730 rotating shafts, 740 controllers, 741 motor switch buttons, 742 pressurizing pump switch buttons, 743 ultrasonic transducer switch buttons, 800 hose spray head storage boxes and 900 stopping agent storage cabinets.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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.
Example 1
Referring to fig. 1-2, the present invention provides the following technical solutions: a stopping agent spraying device comprises a trolley board 100, wherein the front side and the rear side of the trolley board 100 are both connected with wheels 110 through wheel shafts, the right side wall of the trolley board 100 is in threaded connection with a trolley pushing rod 120, the top of the trolley board 100 is in threaded connection with a stirring barrel 200, the top of the stirring barrel 200 is fixedly connected with a top cover 210 through a flange, the top wall of the top cover 210 is in threaded connection with a motor 220, an output shaft of the motor 220 is fixedly connected with the top end of a stirring shaft 230, the outer wall of the stirring shaft 230 is fixedly provided with stirring blades 231, the top of the top cover 210 is in threaded connection with a measuring tool mounting rack 300, a measuring cylinder 310 is fixedly mounted on the measuring tool mounting rack 300, a stopping agent output port 311 is formed at the bottom of the measuring cylinder 310, a stopping agent injection pipe 320 is communicated and clamped between the top wall and the bottom wall of the top cover 210, and a stopping agent injection valve 330, stopping agent injection valve 330's top and stopping agent delivery outlet 311 threaded connection, it has water supply pipe connector 400 to link up and the joint between the roof of top cap 210 and the diapire, flowmeter 410 is installed at water supply pipe connector 400's top, the interior diapire of agitator 200 is equipped with ultrasonic transducer 500, the bottom left side wall of agitator 200 link up and integrated into one piece has drain pipe 201, the left end of drain pipe 201 passes through flange and booster pump 600's input tube fixed connection, the top spiro union of shallow board 100 has controlling means 700, the top spiro union of shallow board 100 has hose shower nozzle to deposit case 800.
In this embodiment: the front side and the rear side of the cart plate 100 are both connected with wheels 110 through wheel shafts, the right side wall of the cart plate 100 is in threaded connection with a cart rod 120, the cart plate 100 can be pushed to move through the wheels 110 through the cart rod 120, the top of the cart plate 100 is in threaded connection with a stirring barrel 200, the stirring barrel 200 is used for mixing a stopping agent and water, the top of the stirring barrel 200 is fixedly connected with a top cover 210 through a flange, the top cover 210 is used for sealing the stirring barrel 200 and preventing foreign matters from entering, the top wall of the top cover 210 is in threaded connection with a motor 220, the output shaft of the motor 220 is fixedly connected with the top end of a stirring shaft 230, the outer wall of the stirring shaft 230 is fixedly provided with a stirring blade 231, the motor 220 drives the stirring shaft 230 to rotate together with the stirring blade 231 and is used for stirring the stopping agent and the water in the stirring barrel 200, the top of the top cover 210 is in threaded connection with a measuring tool mounting rack 300, a stopping agent injection pipe 320 is communicated and clamped between the top wall and the bottom wall of the top cover 210, a stopping agent injection valve 330 is in threaded connection with the top of the stopping agent injection pipe 320, the top of the stopping agent injection valve 330 is in threaded connection with a stopping agent output port 311, a stopping agent required to be used is poured into the measuring cylinder 310, the pouring amount is determined according to the capacity scale of the outer wall of the measuring cylinder 310, the stopping agent injection valve 330 can be opened after the amount of the stopping agent poured into the measuring cylinder 310 reaches the required scale mark, the stopping agent in the measuring cylinder 310 enters the stopping agent injection pipe 320 through the stopping agent injection valve 330 and is injected into the stirring barrel 200, a water supply pipe connector 400 is communicated and clamped between the top wall and the bottom wall of the top cover 210, a flow meter 410 is arranged at the top of the water supply pipe connector 400, the flow meter 410 is connected with a water supply pipeline, water is injected into the stirring barrel 200, and, when the injection amount of water reaches the amount required by the proportion, stopping injecting water, arranging an ultrasonic transducer 500 on the inner bottom wall of the stirring barrel 200, using the physical effects of cavitation, radiation pressure, acoustic flow and the like when ultrasonic waves are transmitted in cleaning liquid to reinforce the mixing effect of the inhibitor and the water, stripping the components of the inhibitor remained on the inner wall of the stirring barrel 200 during cleaning to improve the cleaning effect and speed of the stirring barrel 200, penetrating and integrally forming the left side wall of the bottom of the stirring barrel 200 to form a liquid outlet pipe 201, fixedly connecting the left end of the liquid outlet pipe 201 with an input pipe of a booster pump 600 through a flange, pumping the mixed feed liquid of the inhibitor in the stirring barrel 200 out by the booster pump 600 and spraying the mixed feed liquid to a coal pile through a hose and a spray head, wherein the top of the cart plate 100 is screwed with a control device 700, and the control device 700 is used for controlling the operation of the motor 220, the ultrasonic transducer 500 and the booster pump 600, the top of the cart board 100 is screwed with a hose nozzle storage box 800, and the hose nozzle storage box 800 is used for storing hoses and nozzles for spraying.
Specifically, the top of the top cover 210 is welded with a carrying handle 211, and the carrying handle 211 facilitates the movement of the top cover 210.
Specifically, the motor 220 is a brushless direct current motor, which has low noise and long service life, and is suitable for the device.
Specifically, the measuring cylinder 310 is a transparent PVC measuring cylinder, and the outer wall of the measuring cylinder 310 is marked with volume scales, so that the pouring amount of the retardant in the measuring cylinder 310 can be observed conveniently.
Specifically, the control device 700 comprises a control device mounting rod 710, a damping bearing seat 720 is screwed on the top of the control device mounting rod 710, a rotating shaft 730 is clamped in an inner cavity of the damping bearing seat 720, a controller 740 is screwed on the top of the rotating shaft 730, the damping bearing seat 720 and the rotating shaft 730 are matched to rotate the controller 740, and the controller 740 is used for controlling the operation of each device.
Specifically, the controller 740 is provided with a motor switch button 741, a booster pump switch button 742, and an ultrasonic transducer switch button 743, and the motor switch button 741, the booster pump switch button 742, and the ultrasonic transducer switch button 743 control the motor 220, the booster pump 600, and the ultrasonic transducer 500, respectively.
Specifically, the top of the hose sprayer storage box 800 is fixedly connected with a box cover through a hinge, and the box cover is used for protecting the hose and the sprayer in the hose sprayer storage box 800.
Specifically, the top of the cart plate 100 is screwed with a storage cabinet 900 for a retardant, and the storage cabinet 900 for the retardant is used for storing the retardant.
The working principle and the using process of the invention are as follows: taking the inhibitor out of the inhibitor storage cabinet 900, pouring the inhibitor into the measuring cylinder 310, determining the pouring amount according to the capacity scale of the outer wall of the measuring cylinder 310, opening the inhibitor injection valve 330 after the inhibitor is poured into the measuring cylinder 310 to reach the required scale mark, allowing the inhibitor in the measuring cylinder 310 to enter the inhibitor injection pipe 320 through the inhibitor injection valve 330 and to be injected into the stirring barrel 200, connecting the flow meter 410 with a water supply pipeline, injecting water into the stirring barrel 200, allowing the flow meter 410 to observe the water injection amount, stopping injecting water when the water injection amount reaches the required proportion amount, opening the motor 220 through the motor switch button 741, opening the ultrasonic transducer 500 through the ultrasonic transducer switch button 743, allowing the motor 220 to drive the stirring shaft 230 and the stirring blades 231 to stir the inhibitor and the water in the stirring barrel 200, and allowing the ultrasonic transducer 500 to utilize cavitation generated when ultrasonic waves propagate in the cleaning solution, Physical effects such as radiation pressure, acoustic current play the reinforcing role to the mixed effect of inhibitor and water, the hose that will spray after the stirring is accomplished takes out and is connected fixedly with the export of booster pump 600 with the shower nozzle from hose nozzle storage box 800 with the shower nozzle, booster pump 600 is opened through booster pump shift knob 742, booster pump 600 begins to pump the mixed feed liquid of inhibitor in agitator 200 and spout to the coal pile through hose and shower nozzle, when the blowout is finished and needs to wash agitator 200 inside, through supplying water pipe connector 400 to agitator 200 water injection, drive (mixing) shaft 230 and stirring vane 231 through motor 220 and stir water, and peel off remaining inhibitor composition through ultrasonic transducer 500 to agitator 200 inner wall, reach the cleaning performance.
Finally, it should be noted that: 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 described in the foregoing embodiments, or equivalents may be substituted for elements thereof. 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. A stopping agent sprinkler which characterized in that: the device comprises a cart plate (100), wheels (110) are connected to the front side and the rear side of the cart plate (100) through wheel shafts, a cart rod (120) is connected to the right side wall of the cart plate (100) in a threaded manner, a stirring barrel (200) is connected to the top of the cart plate (100) in a threaded manner, the top of the stirring barrel (200) is fixedly connected with a top cover (210) through a flange, a motor (220) is connected to the top wall of the top cover (210) in a threaded manner, the output shaft of the motor (220) is fixedly connected with the top end of a stirring shaft (230), stirring blades (231) are fixedly arranged on the outer wall of the stirring shaft (230), a measuring tool mounting frame (300) is connected to the top of the top cover (210) in a threaded manner, a measuring cylinder (310) is fixedly mounted on the measuring tool mounting frame (300), a stopping agent output port (311) is formed in the bottom of the measuring cylinder (310), a stopping agent injection pipe (, the top threaded connection of stopping agent injection pipe (320) has stopping agent injection valve (330), the top and stopping agent delivery outlet (311) threaded connection of stopping agent injection valve (330), it has delivery pipe connector (400) to link up and the joint between the roof of top cap (210) and the diapire, flowmeter (410) are installed at the top of delivery pipe connector (400), the inner diapire of agitator (200) is equipped with ultrasonic transducer (500), the bottom left side wall of agitator (200) link up and integrated into one piece has drain pipe (201), the left end of drain pipe (201) passes through the flange and the input tube fixed connection of booster pump (600), the top spiro union of shallow board (100) has controlling means (700), the top spiro union of shallow board (100) has hose shower nozzle to deposit case (800).
2. A retardant spraying device as claimed in claim 1, wherein: the top of the top cover (210) is welded with a carrying handle (211).
3. A retardant spraying device as claimed in claim 1, wherein: the motor (220) adopts a brushless direct current motor.
4. A retardant spraying device as claimed in claim 1, wherein: the measuring cylinder (310) is a transparent PVC measuring cylinder, and the outer wall of the measuring cylinder (310) is marked with capacity scales.
5. A retardant spraying device as claimed in claim 1, wherein: controlling means (700) includes controlling means installation pole (710), the top spiro union of controlling means installation pole (710) has damping bearing frame (720), the inner chamber joint of damping bearing frame (720) has pivot (730), the top spiro union of pivot (730) has controller (740).
6. A stopping agent spraying device according to claim 5, characterized in that: the controller (740) is provided with a motor switch button (741), a booster pump switch button (742) and an ultrasonic transducer switch button (743).
7. A retardant spraying device as claimed in claim 1, wherein: the top of the hose spray head storage box (800) is fixedly connected with a box cover through a hinge piece.
8. A retardant spraying device as claimed in claim 1, wherein: the top of the cart plate (100) is screwed with a stopping agent storage cabinet (900).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202020778121.XU CN212337351U (en) | 2020-05-12 | 2020-05-12 | Stopping agent sprinkler |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202020778121.XU CN212337351U (en) | 2020-05-12 | 2020-05-12 | Stopping agent sprinkler |
Publications (1)
Publication Number | Publication Date |
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CN212337351U true CN212337351U (en) | 2021-01-12 |
Family
ID=74079998
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN202020778121.XU Expired - Fee Related CN212337351U (en) | 2020-05-12 | 2020-05-12 | Stopping agent sprinkler |
Country Status (1)
Country | Link |
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CN (1) | CN212337351U (en) |
-
2020
- 2020-05-12 CN CN202020778121.XU patent/CN212337351U/en not_active Expired - Fee Related
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GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210112 |
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CF01 | Termination of patent right due to non-payment of annual fee |