CN215261979U - Anti-freezing floating ball type industrial liquid level transmitter - Google Patents
Anti-freezing floating ball type industrial liquid level transmitter Download PDFInfo
- Publication number
- CN215261979U CN215261979U CN202120414506.2U CN202120414506U CN215261979U CN 215261979 U CN215261979 U CN 215261979U CN 202120414506 U CN202120414506 U CN 202120414506U CN 215261979 U CN215261979 U CN 215261979U
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- 239000007788 liquid Substances 0.000 title claims abstract description 27
- 238000007710 freezing Methods 0.000 title claims description 29
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 208000001034 Frostbite Diseases 0.000 claims abstract description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 47
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 47
- 241001330002 Bambuseae Species 0.000 claims description 47
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 47
- 239000011425 bamboo Substances 0.000 claims description 47
- 238000010438 heat treatment Methods 0.000 claims description 16
- 230000002528 anti-freeze Effects 0.000 claims 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 23
- 238000005259 measurement Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 241000883990 Flabellum Species 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses a floater formula industrial liquid level changer prevents frostbite, its technical scheme is: including a pipe body, the fixed casing that is equipped with in body top, the inside freeze-proof mechanism that is equipped with of casing, it is outside that freeze-proof mechanism extends the casing, freeze-proof mechanism includes the motor, inside the casing was located to the motor, the motor passes through the first rotation pole of output shaft fixedly connected with, first rotation pole passes through the bearing with a casing inner chamber lateral wall and is connected, the beneficial effects of the utility model are that: through simple structural design, realized that floater formula level transmitter can still can work under the low temperature condition when carrying out surface of water level measurement, reduced the influence to the floater simultaneously when heaing up, do not add too much spare part when realizing above function, the person of being convenient for use also is favorable to producing manufacturing when operating, relatively is fit for using widely on a large scale.
Description
Technical Field
The utility model relates to a floater formula industrial liquid level changer technical field prevents frostbite, concretely relates to floater formula industrial liquid level changer prevents frostbite.
Background
The float-ball type liquid level transducer is composed of magnetic float ball, measuring conduit, signal unit, electronic unit, junction box and mounting component, and can convert the change of various level parameters into standard current signal, and can remotely transmit it into operation control chamber, and can make centralized display, alarm or automatic control by secondary instrument or computer, and the specific gravity of general magnetic float ball is less than 0.5, and can float on the liquid level and move up and down along the measuring conduit, and the measuring element is mounted in the conduit, and can convert the measured liquid level signal into resistance signal which is directly proportional to the change of liquid level under the action of external magnetism, and can convert the electronic unit into 4-20 mA or other standard signal to output, and said transducer is a module circuit, and possesses the advantages of acid-resistance, moisture-resistance, vibration-resistance and corrosion-resistance, and its interior contains constant-current feedback circuit and internal protection circuit, and can make the output maximum current not exceed 28mA, so that it can reliably protect power supply and make secondary instrument not be damaged, can be widely applied to detection control in various industrial processes.
The prior art has the following defects: the current floater formula industry liquid level changer kind and function are numerous, can extensively be applicable to the level measurement of industrial usage, current floater formula industry liquid level changer is when using at that time, this aspect can go to consider to the floater is frostproofing few someone, but cross when low in external environment, the condition that can take place to freeze is crossed to the temperature on every side of floater is low takes place, in case the surface of water freezes the measuring work that just can greatly influence liquid level changer, need the manual work to carry out the deicing, but under the condition that the temperature was crossed lowly, still have very big possibility after the manual work carries out the deicing and freeze again, need clear away once more, will waste time and energy relatively, cause inconvenience for measuring work.
Therefore, the invention is necessary to develop an anti-freezing floating ball type industrial liquid level transmitter.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model provides a floater formula industrial liquid level changer prevents frostbite through simple structural design, has realized floater formula liquid level changer and can still can work under the low temperature condition when carrying out surface of water level measurement, has reduced the influence to the floater simultaneously when going on heaing up to solve traditional floater formula liquid level changer and lead to the floater can't reciprocate and carry out level measurement's problem because surface of water temperature is low excessively at the during operation.
In order to achieve the above object, the present invention provides the following technical solutions: an anti-freezing floating ball type industrial liquid level transmitter comprises a pipe body, wherein a shell is fixedly arranged at the top of the pipe body, an anti-freezing mechanism is arranged inside the shell, and the anti-freezing mechanism extends out of the shell;
the anti-freezing mechanism comprises a motor, the motor is arranged in the shell and fixedly connected with a first rotating rod through an output shaft, the first rotating rod is connected with one side wall of the inner cavity of the shell through a bearing, a frame body is arranged outside the tube body, a first filter screen is fixedly arranged at the top and the bottom of the frame body respectively, a floating ball is further arranged outside the tube body and arranged in the frame body;
the anti-freezing mechanism further comprises two anti-freezing components, each anti-freezing component comprises two first bevel gears, the two first bevel gears are fixedly arranged outside the corresponding first rotating rod, a first bamboo joint type telescopic rod and a second bamboo joint type telescopic rod are arranged at the bottom of the corresponding first rotating rod and respectively penetrate through the bottom of the shell and are respectively connected with the bottom of the shell through bearings, second bevel gears are fixedly arranged at the tops of the first bamboo joint type telescopic rods and the second bamboo joint type telescopic rods respectively and are respectively arranged at the bottoms of the two first bevel gears, the two second bevel gears are respectively meshed with the two first bevel gears, the first bamboo joint type telescopic rods penetrate through the tops of the frame and extend into the frame, a supporting plate is fixedly arranged on one side wall of an inner cavity of the frame, and the first bamboo joint type telescopic rods penetrate through the supporting plate and are connected with the supporting plate through bearings, the bottom of the first bamboo joint type telescopic rod is fixedly connected with a reciprocating screw rod, a bearing seat is sleeved outside the reciprocating screw rod, the bearing seat is connected with the reciprocating screw rod through a ball nut pair, a vertical groove is formed in one side wall of an inner cavity of the frame body, a heating plate is fixedly connected to one side of the bearing seat, a connecting plate is fixedly arranged on one side of the heating plate, a sliding block is fixedly arranged on one side of the connecting plate, and the sliding block is arranged in the vertical groove;
the anti-freezing mechanism further comprises a supporting part, the supporting part comprises a transverse plate, one side of the transverse plate is fixedly connected with one side wall of the inner cavity of the shell, and the motor is fixedly arranged at the top of the transverse plate.
Preferably, the shell is internally and fixedly provided with a limiting plate, and the first bamboo joint type telescopic rod and the second bamboo joint type telescopic rod respectively penetrate through the limiting plate and are respectively connected with the limiting plate through bearings.
Preferably, fixed first fixed plate and the second fixed plate of being equipped with in framework one side, the fixed second filter screen that is equipped with in first fixed plate bottom, second filter screen bottom and second fixed plate top fixed connection, the inside third filter screen that still is equipped with of framework, third filter screen bottom and top respectively with two first filter screen fixed connection.
Preferably, a floating plate is fixedly arranged on one side of the frame body and penetrates through the second filter screen.
Preferably, the second bamboo joint formula telescopic link bottom is fixed and is equipped with the second dwang, the second dwang runs through the kickboard and passes through the bearing with the kickboard and be connected, second dwang bottom extends into inside and pass through the bearing with the second fixed plate of second fixed plate and be connected.
Preferably, the second dwang outside is fixed and is equipped with two plectanes, two the plectane outside is fixed respectively and is equipped with a plurality of flabellums.
Preferably, the supporting part comprises a motor frame, one side of the motor frame is fixedly connected with one side wall of the inner cavity of the shell, the motor is fixedly arranged inside the motor frame, and the first rotating rod penetrates through one side of the motor frame and is connected with the motor frame through a bearing.
The utility model has the advantages that:
1. the utility model discloses a design of freeze-proof mechanism, make liquid level transmitter when carrying out the during operation, when meetting the too low condition of external environment, can heat up the temperature in floater next door through the heating piece of framework inside, and when heating the piece and heating up, still slightly stir the surface of water on next door, make the peripheral surface of water be in slight fluctuation state always, avoided the surface of water to freeze because of static, avoid the surface of water undulant to cause the influence to the measurement of floater simultaneously, still set up a plurality of filter screens and filtered the ripple of surface of water, through the above avoid traditional floater type liquid level transmitter to lead to the floater can't reciprocate the condition of carrying out liquid level measurement because the surface of water temperature is too low when working;
2. the utility model discloses a simple structural design has realized that floater formula liquid level changer can still can work under the low temperature condition when carrying out surface of water level measurement, has reduced the influence to the floater simultaneously when heaing up, does not add too much spare part when realizing above function, also is favorable to producing manufacturing when the person of facilitating the use operates, has controlled the economic cost when making effectively, relatively is fit for using widely on a large scale.
Drawings
Fig. 1 is a schematic view of the overall structure provided by the present invention;
FIG. 2 is a perspective view of the tube provided by the present invention;
fig. 3 is an enlarged view of a point a in fig. 1 according to the present invention;
fig. 4 is a schematic structural diagram of embodiment 2 provided by the present invention;
in the figure: the device comprises a pipe body 1, a shell 2, a motor 3, a first rotating rod 4, a frame 5, a first filter screen 6, a floating ball 7, a first bevel gear 8, a first bamboo joint type telescopic rod 9, a second bamboo joint type telescopic rod 10, a second bevel gear 11, a support plate 12, a reciprocating screw rod 13, a bearing seat 14, a vertical groove 15, a heating plate 16, a connecting plate 17, a sliding block 18, a transverse plate 19, a second filter screen 20, a floating plate 21, a second rotating rod 22, fan blades 23 and a motor frame 24.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
the anti-freezing mechanism comprises a motor 3, the motor 3 is arranged inside a shell 2, the motor 3 is fixedly connected with a first rotating rod 4 through an output shaft, the first rotating rod 4 is connected with one side wall of an inner cavity of the shell 2 through a bearing, a frame body 5 is arranged outside the tube body 1, a first filter screen 6 is fixedly arranged at the top and the bottom of the frame body 5 respectively, a floating ball 7 is further arranged outside the tube body 1, and the floating ball 7 is arranged inside the frame body 5;
the anti-freezing mechanism further comprises two anti-freezing components, each anti-freezing component comprises two first bevel gears 8, the two first bevel gears 8 are fixedly arranged outside the first rotating rod 4, the bottom of the first rotating rod 4 is provided with a first bamboo joint type telescopic rod 9 and a second bamboo joint type telescopic rod 10, the first bamboo joint type telescopic rod 9 and the second bamboo joint type telescopic rod 10 respectively penetrate through the bottom of the shell 2 and are respectively connected with the bottom of the shell 2 through bearings, the tops of the first bamboo joint type telescopic rod 9 and the second bamboo joint type telescopic rod 10 are respectively and fixedly provided with two bevel gears 11, the two second bevel gears 11 are respectively arranged at the bottoms of the two first bevel gears 8, the two bevel gears 11 are respectively meshed with the two first bevel gears 8, the first bamboo joint type telescopic rod 9 penetrates through the top of the frame 5 and extends into the frame 5, a supporting plate 12 is fixedly arranged on one side wall of an inner cavity of the frame 5, the first bamboo joint type telescopic rod 9 penetrates through a support plate 12 and is connected with the support plate 12 through a bearing, a reciprocating screw rod 13 is fixedly connected to the bottom of the first bamboo joint type telescopic rod 9, a bearing seat 14 is sleeved outside the reciprocating screw rod 13, the bearing seat 14 is connected with the reciprocating screw rod 13 through a ball nut pair, a vertical groove 15 is formed in one side wall of an inner cavity of the frame body 5, a heating plate 16 is fixedly connected to one side of the bearing seat 14, a connecting plate 17 is fixedly arranged on one side of the heating plate 16, a sliding block 18 is fixedly arranged on one side of the connecting plate 17, and the sliding block 18 is arranged inside the vertical groove 15;
the anti-freezing mechanism further comprises a supporting part, the supporting part comprises a transverse plate 19, one side of the transverse plate 19 is fixedly connected with one side wall of the inner cavity of the shell 2, and the motor 3 is fixedly arranged at the top of the transverse plate 19;
furthermore, a limiting plate is fixedly arranged inside the shell 2, the first bamboo joint type telescopic rod 9 and the second bamboo joint type telescopic rod 10 respectively penetrate through the limiting plate and are respectively connected with the limiting plate through bearings, and the limiting plate can provide support for the first bamboo joint type telescopic rod 9 and the second bamboo joint type telescopic rod 10, so that the first bamboo joint type telescopic rod 9 and the second bamboo joint type telescopic rod 10 can rotate more stably;
furthermore, a first fixing plate and a second fixing plate are fixedly arranged on one side of the frame body 5, a second filter screen 20 is fixedly arranged at the bottom of the first fixing plate, the bottom of the second filter screen 20 is fixedly connected with the top of the second fixing plate, a third filter screen is further arranged in the frame body 5, the bottom and the top of the third filter screen are respectively and fixedly connected with the two first filter screens 6, the second filter screen 20 and the third filter screen can filter ripples on the water surface, and influences on the measurement of the floating ball 7 are reduced;
furthermore, a floating plate 21 is fixedly arranged on one side of the frame body 5, the floating plate 21 penetrates through the second filter screen 20, and the floating plate 21 enables the whole frame body 5 to float along with the liquid level, so that the up-and-down movement of the floating ball 7 is not influenced;
further, a second rotating rod 22 is fixedly arranged at the bottom of the second bamboo joint type telescopic rod 10, the second rotating rod 22 penetrates through the floating plate 21 and is connected with the floating plate 21 through a bearing, the bottom of the second rotating rod 22 extends into a second fixing plate and is connected with the second fixing plate through a bearing, and the second fixing plate can provide support and limit for the second rotating rod 22;
further, the second dwang 22 outside is fixed and is equipped with two plectanes, two the plectane outside is fixed respectively and is equipped with a plurality of flabellums 23, slightly stirs the surface of water through flabellum 23, can avoid the surface of water to freeze.
The utility model discloses a use as follows: when the utility model is used, firstly, the motor 3 is connected with an external power supply, when the liquid level is measured, the motor 3 is operated to drive the first rotating rod 4 to rotate, the first rotating rod 4 drives the first bevel gear 8 to rotate, the first bevel gear 8 drives the second bevel gear 11 to rotate, the two second bevel gears 11 respectively drive the first bamboo joint type telescopic rod 9 and the second bamboo joint type telescopic rod 10 to rotate, the first bamboo joint type telescopic rod 9 drives the reciprocating screw rod 13 to rotate, the reciprocating screw rod 13 drives the bearing seat 14 to move up and down, the bearing seat 14 drives the heating plate 16 to move, the heating plate 16 moves up and down to heat the water temperature beside the floating ball 7, the freezing caused by the low temperature is avoided, the floating ball 7 can not normally move, meanwhile, the second bamboo joint type telescopic rod 10 drives the second rotating rod 22 to rotate, the second rotating rod 22 drives the circular plate to rotate, the circular plate drives the fan blades 23 to rotate, flabellum 23 slightly stirs the surface of water through rotating, design through anti-freezing mechanism, make level transmitter carry out the during operation, when meetting the too low condition of external environment, can heat up the temperature of floater 7 next door through the inside heating piece of framework 5, and when heating the piece and rising, still slightly stir the surface of water of next door, make peripheral surface of water be in slight fluctuation state always, avoided the surface of water to freeze because static, avoid the surface of water undulant and cause the influence to floater 7's measurement simultaneously, it filters still to have set up the ripple of a plurality of filter screens to the surface of water, through above avoid traditional floater 7 formula level transmitter to lead to floater 7 can't reciprocate to carry out level measurement's the condition emergence because the surface of water temperature is low at the during operation.
Embodiment 2, refer to fig. 4, the utility model provides a pair of float ball formula industrial liquid level changer prevents frostbite, including motor frame 24, motor frame 24 one side and 2 inner chamber lateral walls fixed connection of casing, inside motor frame 24 was located to the motor 3 is fixed, first rotation pole 4 runs through motor frame 24 one side and passes through the bearing with motor frame 24 and be connected.
The utility model discloses a use as follows: when the utility model is used, firstly, the motor 3 is connected with an external power supply, when the liquid level is measured, the motor 3 is operated to drive the first rotating rod 4 to rotate, the first rotating rod 4 drives the first bevel gear 8 to rotate, the first bevel gear 8 drives the second bevel gear 11 to rotate, the two second bevel gears 11 respectively drive the first bamboo joint type telescopic rod 9 and the second bamboo joint type telescopic rod 10 to rotate, the first bamboo joint type telescopic rod 9 drives the reciprocating screw rod 13 to rotate, the reciprocating screw rod 13 drives the bearing seat 14 to move up and down, the bearing seat 14 drives the heating plate 16 to move, the heating plate 16 moves up and down to heat the water temperature beside the floating ball 7, and the freezing caused by the low temperature is avoided, when the motor 3 works, the motor frame 24 can effectively provide protection for the motor 3, prevent the motor 3 from being damaged, and meanwhile, the motor frame 24 is used for fixing the motor 3, so that the working stability of the motor 3 is ensured.
The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solutions described above. Therefore, any simple modifications or equivalent replacements made according to the technical solution of the present invention belong to the scope of the claimed invention as far as possible.
Claims (7)
1. The utility model provides a float formula industrial liquid level changer prevents frostbite, includes body (1), its characterized in that: a shell (2) is fixedly arranged at the top of the pipe body (1), an anti-freezing mechanism is arranged inside the shell (2), and the anti-freezing mechanism extends out of the shell (2);
the anti-freezing mechanism comprises a motor (3), the motor (3) is arranged inside the shell (2), the motor (3) is fixedly connected with a first rotating rod (4) through an output shaft, the first rotating rod (4) is connected with one side wall of an inner cavity of the shell (2) through a bearing, a frame body (5) is arranged outside the tube body (1), the top and the bottom of the frame body (5) are respectively and fixedly provided with a first filter screen (6), a floating ball (7) is further arranged outside the tube body (1), and the floating ball (7) is arranged inside the frame body (5);
the anti-freezing mechanism further comprises two anti-freezing components, each anti-freezing component comprises two first bevel gears (8), the two first bevel gears (8) are fixedly arranged outside the corresponding first rotating rod (4), the bottom of each first rotating rod (4) is provided with a first bamboo joint type telescopic rod (9) and a second bamboo joint type telescopic rod (10), the first bamboo joint type telescopic rods (9) and the second bamboo joint type telescopic rods (10) respectively penetrate through the bottom of the corresponding shell (2) and are respectively connected with the bottom of the corresponding shell (2) through bearings, the tops of the first bamboo joint type telescopic rods (9) and the second bamboo joint type telescopic rods (10) are respectively and fixedly provided with second bevel gears (11), the two second bevel gears (11) are respectively arranged at the bottoms of the two first bevel gears (8), the two second bevel gears (11) are respectively meshed with the two first bevel gears (8), the first bamboo joint type telescopic rods (9) penetrate through the top of the frame (5) and extend into the frame (5), a supporting plate (12) is fixedly arranged on one side wall of an inner cavity of the frame body (5), the first bamboo joint type telescopic rod (9) penetrates through the supporting plate (12) and is connected with the supporting plate (12) through a bearing, a reciprocating screw rod (13) is fixedly connected to the bottom of the first bamboo joint type telescopic rod (9), a bearing seat (14) is sleeved outside the reciprocating screw rod (13), the bearing seat (14) is connected with the reciprocating screw rod (13) through a ball nut pair, a vertical groove (15) is formed in one side wall of the inner cavity of the frame body (5), a heating plate (16) is fixedly connected to one side of the bearing seat (14), a connecting plate (17) is fixedly arranged on one side of the heating plate (16), a sliding block (18) is fixedly arranged on one side of the connecting plate (17), and the sliding block (18) is arranged inside the vertical groove (15);
the anti-freezing mechanism further comprises a supporting part, the supporting part comprises a transverse plate (19), one side of the transverse plate (19) is fixedly connected with one side wall of the inner cavity of the shell (2), and the motor (3) is fixedly arranged at the top of the transverse plate (19).
2. The antifreeze float-type industrial level transmitter of claim 1, wherein: the shell (2) is internally and fixedly provided with a limiting plate, and the first bamboo joint type telescopic rod (9) and the second bamboo joint type telescopic rod (10) penetrate through the limiting plate respectively and are connected with the limiting plate through bearings respectively.
3. The antifreeze float-type industrial level transmitter of claim 1, wherein: fixed first fixed plate and the second fixed plate of being equipped with in framework (5) one side, fixed second filter screen (20) of being equipped with in first fixed plate bottom, second filter screen (20) bottom and second fixed plate top fixed connection, the inside third filter screen that still is equipped with of framework (5), third filter screen bottom and top respectively with two first filter screen (6) fixed connection.
4. The antifreeze float-type industrial level transmitter of claim 1, wherein: and a floating plate (21) is fixedly arranged on one side of the frame body (5), and the floating plate (21) penetrates through the second filter screen (20).
5. The antifreeze float-type industrial level transmitter of claim 1, wherein: second bamboo joint formula telescopic link (10) bottom is fixed and is equipped with second dwang (22), second dwang (22) run through kickboard (21) and pass through the bearing with kickboard (21) and be connected, second dwang (22) bottom extends into inside and pass through the bearing with the second fixed plate of second fixed plate and is connected.
6. The antifreeze float-type industrial level transmitter of claim 5, wherein: the outside of the second rotating rod (22) is fixedly provided with two circular plates, and the outside of each circular plate is fixedly provided with a plurality of fan blades (23).
7. The antifreeze float-type industrial level transmitter of claim 1, wherein: the supporting part comprises a motor frame (24), one side of the motor frame (24) is fixedly connected with one side wall of the inner cavity of the shell (2), the motor (3) is fixedly arranged inside the motor frame (24), and the first rotating rod (4) penetrates through one side of the motor frame (24) and is connected with the motor frame (24) through a bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120414506.2U CN215261979U (en) | 2021-02-25 | 2021-02-25 | Anti-freezing floating ball type industrial liquid level transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120414506.2U CN215261979U (en) | 2021-02-25 | 2021-02-25 | Anti-freezing floating ball type industrial liquid level transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215261979U true CN215261979U (en) | 2021-12-21 |
Family
ID=79503684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120414506.2U Expired - Fee Related CN215261979U (en) | 2021-02-25 | 2021-02-25 | Anti-freezing floating ball type industrial liquid level transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215261979U (en) |
-
2021
- 2021-02-25 CN CN202120414506.2U patent/CN215261979U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211221 |
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| CF01 | Termination of patent right due to non-payment of annual fee |