CN206830463U - A kind of SCM Based vacuum self priming pump - Google Patents
A kind of SCM Based vacuum self priming pump Download PDFInfo
- Publication number
- CN206830463U CN206830463U CN201720729574.1U CN201720729574U CN206830463U CN 206830463 U CN206830463 U CN 206830463U CN 201720729574 U CN201720729574 U CN 201720729574U CN 206830463 U CN206830463 U CN 206830463U
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- pump
- pump chamber
- self priming
- motor
- scm based
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Abstract
A kind of SCM Based vacuum self priming pump disclosed in the utility model, including base, motor is provided with base, drive shaft one end in motor is sequentially connected photoelectricity speed counting device and air extractor, the drive shaft other end connects impeller by shaft coupling, and impeller is located in the pump chamber affixed with motor, and pump chamber connects air extractor by strong-willed pipe, delivery port and water inlet pipe are additionally provided with pump chamber, alarm unit and main control unit are additionally provided with motor.Vacuum self priming pump of the present utility model is by setting air extractor, opening the gas of pump stage excavationg pump intracavitary, making pump chamber to the external world into negative pressure state, and then the liquid of water inlet pipe is flowed to pump chamber in the presence of external atmosphere pressure, automatic filling pump is realized, return duct is installed in the lower section of pump chamber, it can reach after use noresidue liquid in pump chamber, avoid at low ambient temperatures, freeze in pump chamber due to retaining diversion, cause it not use immediately, and the bursting by freezing pump housing, damage the phenomenon of motor.
Description
Technical field
The utility model belongs to self priming pump equipment technical field, and in particular to a kind of SCM Based vacuum self priming pump.
Background technology
Self priming pump is one kind of centrifugal pump, is referred in addition to needing to fill pump before first time starts, remaining is all not required to fill pump, energy when starting
Automatically extract the gas in suction line out and normally convey the centrifugal pump of liquid.Self priming pump in entrance by setting up suction room, suction
For pipe in the top of impeller center line, it is indoor to stay in suction for some liquid after termination of pumping, and when being again started up pump, it is indoor to stay in suction
Liquid circulates in pump, by the gas intake impeller in suction line, (internal-mixing) or impeller outlet (exterior mixing) in impeller
After mixing, enter the gas-liquid separation chamber set up in exit and separate gas-liquid, outside gas excavationg pump, it is straight that liquid is back to suction room
It is hydraulically full in suction line, normally convey liquid.
Self priming pump is not only applicable to urban environmental protection, building, fire-fighting, chemical industry, pharmacy, dye printing and dyeing, wine using relatively broad
Make, electric power, plating, papermaking, oil, mine, equipment cooling, oil tanker emptying etc., be also used for clear water, seawater, Jie for having acid-base value
Matter or viscosity are less than or equal to the chemical medium liquid of 100 lis of ambers and solid content up to less than 30%, the slurry with general pasty state.
On the market there is a variety of self priming pumps, self priming pump is accepted extensively with its portability and stability by people in recent years, but due to it
The design of itself is not comprehensive, and family expenses self priming pump is in the prevalence of self-priming time length, low temperature diversion frozen problem；In north of china in winter,
Temperature is relatively low, and in the self priming pump termination of pumping stage, the diversion in pump chamber is often freezed, and the bursting by freezing pump housing, influences making again for self priming pump
With special diversion freezes that impeller can be blocked, and the motor being connected with impeller is then stuck, if start, short time can cause
Motor is burnt out.
It is antifreeze for self priming pump, mainly there are three class measures, first, in the additional heat preservation layer of pump chamber, such as cotton-wool, straw etc.；Second,
High-temp liquid is added in toward pump chamber or melts the frozen liquid in pump chamber in pump chamber external heat；It is third, each in use, being noted
Water, the water in pump chamber is bled off after use；For directly adding cotton-wool or straw, for microthermal climate, if parcel is not tight
It is real, it can still freeze the diversion in pump chamber, even if parcel is tight, but if temperature is excessively low, and can freeze in pump chamber
Diversion；The liquid ablation of heat is filled in pump chamber or ablation is directly heated outside pump chamber, for microthermal climate, this method is more time-consuming and adds
Heat is relatively complicated；Directly note is discharged water, relatively simple, but this step will be passed through by opening pump every time, makes the use of self priming pump very not square
Just.
Utility model content
The purpose of this utility model is to provide a kind of SCM Based vacuum self priming pump, solves existing self priming pump and uses
When self-priming time grow, and diversion easy freezing, the bursting by freezing pump housing in pump chamber under cryogenic, the problem of damaging motor.
The utility model is the technical scheme adopted is that a kind of SCM Based vacuum self priming pump, including base, base
On be provided with motor, drive shaft one end in motor is sequentially connected photoelectricity speed counting device and air extractor, and the drive shaft other end leads to
Shaft coupling connection impeller is crossed, impeller be located in the pump chamber affixed with motor, and pump chamber is by strong-willed pipe connection air extractor, on pump chamber
Delivery port and water inlet pipe are additionally provided with, alarm unit and main control unit are additionally provided with motor.
It is of the present utility model to be further characterized in that,
Baroceptor and magnetic valve b are provided with strong-willed pipe, baroceptor is XGZP6868 type baroceptors, electricity
Magnet valve b is normally closed solenoid valve.
Magnetic valve a is provided with delivery port, magnetic valve a is normally open type magnetic valve.
Main control unit includes circuit substrate, is provided with single-chip microcomputer on circuit substrate, single-chip microcomputer by wire connect electromagnetism after
Electrical equipment group, electromagnetic relay group include electromagnetic relay I, electromagnetic relay II and the electromagnetic relay III being in parallel；Electromagnetism after
Electrical equipment I is open type and is connected to magnetic valve b and magnetic valve a, and electromagnetic relay II is closed type and is connected with motor, electricity
Magnetic relay III is open type.
Alarm unit includes single-chip microcomputer, buzzer and the light emitting diode connected by circuit successively.
Single-chip microcomputer is Msp430F2012 single-chip microcomputers.
Be provided with liquid level sensor a at the top of pump chamber, pump chamber from top to bottom total height 1/4 at be provided with liquid level sensor b,
Liquid level sensor a and liquid level sensor b is respectively connected with single-chip microcomputer and is XKC-Y25-V type liquid level sensors；
The return duct parallel with base is additionally provided with pump chamber, return duct one end is connected with water inlet pipe, and return duct is another
End is connected with dewatering outlet, and dewatering outlet is located at pump chamber bottom.
Photoelectricity speed counting device includes the photoelectricity speed counter being erected on base, and electromagnetic clutch is provided with the top of photoelectricity speed counter
Device, electromagnetic clutch include the driving pulley and sucker being oppositely arranged, and sucker socket is on the driving shaft and its side wall is provided with gear
Plate, driving pulley are socketed on multi-diameter shaft, and multi-diameter shaft is interior positioned at the bearing block for being fixed in base and it is also connected with air extractor；
It is H2010 type photoelectricity speed counters that photoelectricity speed counter, which connects single-chip microcomputer and its,；
Electromagnetic clutch connects electromagnetic relay III and is slipping toothed electromagnetic clutch.
The axiality of driving pulley and sucker is not more than 0.05mm.
Air extractor includes being erected at pump head on base, is provided with gas outlet on pump head, pump shaft and ladder in pump head
Axle is connected, and pump head is rotary-vane vaccum pump pump head.
The beneficial effects of the utility model are：A kind of SCM Based vacuum self priming pump of the utility model is taken out by setting
Device of air, opening the gas of pump stage excavationg pump intracavitary, making pump chamber to the external world into negative pressure state, and then making the liquid meeting of water inlet pipe
Pump chamber is flowed in the presence of external atmosphere pressure, automatic filling pump is realized, return duct is installed in the lower section of pump chamber, can reach and used
Noresidue liquid in pump chamber, avoids at low ambient temperatures, freezes in pump chamber due to retaining diversion, cause it can not be immediately after finishing
Use, and the bursting by freezing pump housing, the phenomenon of motor is damaged, there is good practical value.
Brief description of the drawings
Fig. 1 is a kind of front view of SCM Based vacuum self priming pump of the utility model；
Fig. 2 is a kind of circuit module figure of SCM Based vacuum self priming pump of the utility model；
Fig. 3 is Fig. 1 left view.
In figure, 1. magnetic valve a, 2. liquid level sensor a, 3. baroceptors, 4. magnetic valve b, 5. motors, 6. light-emitting diodes
Pipe, 7. buzzers, 8. single-chip microcomputers, 9. strong-willed pipes, 10. drive shafts, 11. driving pulleys, 12. multi-diameter shafts, 13. gas outlets, 14. bottoms
Seat, 15. pump heads, 16. bearing blocks, 17. baffle plates, 18. photoelectricity speed counters, 19. suckers, 20. electromagnetic relays I, 21. electromagnetism relays
Device II, 22. electromagnetic relays III, 23. circuit substrates, 24. shaft couplings, 25. return ducts, 26. water inlet pipes, 27. pump chambers, 28. go out
The mouth of a river, 29. dewatering outlets, 30. electromagnetic relay groups, 31. impellers, 32. liquid level sensor b.
Embodiment
The utility model is described in detail with reference to the accompanying drawings and detailed description.
A kind of SCM Based vacuum self priming pump of the utility model, as shown in figure 1, including base 14, set on base 14
It is equipped with motor 5, one end of drive shaft 10 in motor 5 is sequentially connected photoelectricity speed counting device and air extractor, the other end of drive shaft 10
Impeller 31 is connected by shaft coupling 24, impeller 31 is located in the pump chamber 27 affixed with motor 5, and pump chamber 27 is connected by strong-willed pipe 9
Air extractor, delivery port 28 and water inlet pipe 26 are additionally provided with pump chamber 27, alarm unit and master control list are additionally provided with motor 5
Member.
Baroceptor 3 and magnetic valve b4 are provided with strong-willed pipe 9, baroceptor 3 is detected in strong-willed pipe 9 and pump chamber 27
The pressure in portion, model XGZP6868, range 15-115kPa, magnetic valve b4 are normally closed solenoid valve, regulate and control strong-willed pipe 9
Folding.
Magnetic valve a1 is provided with delivery port 28, magnetic valve a1 is normally open type magnetic valve, magnetic valve a1 regulation and control delivery ports
Folding.
As shown in Fig. 2 main control unit includes circuit substrate 23, model Msp430F2012 is provided with circuit substrate 23
Single-chip microcomputer 8, single-chip microcomputer 8 connects electromagnetic relay group 30 by wire, electromagnetic relay group 30 include the electromagnetism that is in parallel after
Electrical equipment I 20, electromagnetic relay II 21 and electromagnetic relay III 22；Electromagnetic relay I 20 is open type and is connected to electromagnetism
Valve b4 and magnetic valve a1, magnetic valve b4 and magnetic valve a1 power supplies are all alternating current 220V, and electromagnetic relay II 21 is closed type and company
Motor 5 is connected to, electromagnetic relay III 22 is open type and is connected with electromagnetic clutch.
Alarm unit includes single-chip microcomputer 8, buzzer 7 and the light emitting diode 6 connected by circuit successively, when in pump chamber 27
When water level is relatively low or does not have water, pass through the sounding of buzzer 7 and the flicker alarm of light emitting diode 6.
The top of pump chamber 27 is provided with liquid level sensor a2, pump chamber 27 from top to bottom total height 1/4 at be provided with liquid level biography
Sensor b32, liquid level sensor a2 and liquid level sensor b32 are respectively connected with single-chip microcomputer 8 and model is XKC-Y25-V, and liquid level passes
High water level in sensor a2 detection pump chambers 27, liquid level sensor b32 detection low water levels；As shown in figure 3, be additionally provided with pump chamber 27 with
The parallel return duct 25 of base 14, the one end of return duct 25 are connected with water inlet pipe 26, the other end of return duct 25 and the phase of dewatering outlet 29
To connect, dewatering outlet 29 is located at the bottom of pump chamber 27, after return duct 25 ensures termination of pumping, noresidue liquid in pump chamber 27.
Photoelectricity speed counting device includes the photoelectricity speed counter 18 being erected on base 14, and the top of photoelectricity speed counter 18 is provided with electricity
Magnet clutch, electromagnetic clutch include the driving pulley 11 that is oppositely arranged and sucker 19, sucker 19 be socketed in drive shaft 10 and
Its side wall is provided with baffle plate 17, and the end movement track of baffle plate 17 is between photoelectricity speed counter 18 and sucker 19, driving pulley 11
It is socketed on multi-diameter shaft 12, multi-diameter shaft 12 is interior positioned at the bearing block 16 for being fixed in base 14 and it is also connected with air extractor；
Both axialities of driving pulley 11 and sucker 19 are not more than 0.05mm, to ensure device normal operation；Photoelectrometer
It is H2010 type photoelectricity speed counters that fast device 18, which connects single-chip microcomputer 8 and its, and photoelectricity speed counter 18 is used to gather motor speed；Electromagnetism from
Clutch connects electromagnetic relay III 22 and is slipping toothed electromagnetic clutch, and electromagnetic clutch uses DC24V power voltage supplies.
Air extractor includes the pump head 15 being erected on base 14, gas outlet 13 is provided with pump head 15, equipped with blade
Biasing rotor makees gyration in the pump chamber of pump head 15, and the pump chamber swept volume of a single chamber cyclically-varying for making to be separated by blade is with reality
Now it is evacuated；Pump shaft tang in pump head 15 is inlayed with the recess of the end of multi-diameter shaft 12 to be connected, and pump head 15 is rotary-vane vaccum pump pump
Head.
The course of work of vacuum self priming pump of the present utility model：
During original state, electromagnetic relay I 20 and electromagnetic relay III 22 are normally open, the electricity being connected with motor 5
Magnetic relay II 21 is normally off, and after energization, single-chip microcomputer 8 is started working and output signal, electromagnetic relay I 20 receive signal
Magnetic valve a1 on control delivery port 28 is closed, the magnetic valve b4 on strong-willed pipe 9 is opened, the reception signal of electromagnetic relay III 22 makes
Sucker 19 engages with driving pulley 11, the reception signal of electromagnetic relay II 21 makes motor 5 and dump, after 1s, single-chip microcomputer 8
Cut-out and the signal of electromagnetic relay II 21, motor 5 start running, while drive air extractor to exclude pump chamber by strong-willed pipe 9
Air in 27, because water inlet pipe 26 is located under liquid level, now the magnetic valve a1 on delivery port 28 is closed, then pump chamber 27 is in
Sealing state, the gas in pump chamber 27 are drained by pump head 15 by gas outlet 13, and pump chamber 27 is gradually into negative pressure state, in water source
Water is squeezed into water inlet pipe 26 and pump chamber 27 successively in the effect of external atmosphere pressure, when the liquid level in pump chamber 27 rises to level sensing
The signal of collection is sent to single-chip microcomputer 8 when at device a2, single-chip microcomputer 8 passes through calculation process, cut-out and electromagnetic relay group 30
Output signal, then electromagnetic relay full recovery to original state, then magnetic valve a1 openings, magnetic valve b4 close i.e. cut-out gas
Road, avoid the liquid in pump chamber 27 and enter air extractor, while sucker 19 and driving pulley 11 separate, and lose air extractor
Power is no longer evacuated, and the power of motor 5 is exported to the impeller 31 in pump chamber 27 entirely, and impeller 31, which rotates at a high speed, to be made in impeller conduit
Current direction delivery port 28, at this moment the entrance of pump chamber 27 form vacuum, the water in water source is in the presence of atmospheric pressure, again from water inlet
Pipe 26 enters pump chamber 27, so repeatedly, conveys liquid.
When stopping the utility model, cut off the electricity supply, single-chip microcomputer 8 is stopped power supply, and electromagnetic relay group 30 keeps initial shape
State, motor 5, which loses power supply operating, to be stopped, and the impeller 31 being connected with motor 5 will also stop, and no longer drive liquid to flow to delivery port
28, delivery port 28 stops water outlet, the water being trapped in pump chamber 27, enters water inlet pipe 26 by the return duct 25 of the lower section of pump chamber 27,
Then water source is returned to.
When the utility model is during operation, occurs water shortage situation suddenly, the liquid level in pump chamber 27 declines, and works as level sensing
When device b32 does not collect liquid level signal, it is sent in single-chip microcomputer 8 and handles, the output signal of single-chip microcomputer 8 control electromagnetic relay group
30, i.e., motor 5 is closed by electromagnetic relay II 21, magnetic valve a1 is closed by electromagnetic relay I 20 while opens magnetic valve
B4, pass through the rotating speed of 18 measurement motor of photoelectricity speed counter 5, when single-chip microcomputer 8, which collects the rotating speed of motor 5, is reduced to 1r/s, single-chip microcomputer 8
Output signal engages sucker 19 and driving pulley 11 by electromagnetic relay III 22, the output signal of single-chip microcomputer 8 after 1s, passes through electricity
Magnetic relay II 21 connects motor 5, and motor operating drives pump head 15 to start to be evacuated, if the water level in water source did not had water inlet pipe 26,
Then the air pressure in pump chamber 27 reduces, and water enters in pump chamber 27, finally realizes normal infusion；If the water level in water source is in water inlet pipe 26
Under, fluid-tight is not formed to water inlet pipe 26, then can not complete the exhaust process of pump chamber 27, the pump chamber that baroceptor 3 collects
Air pressure in 27 will not be big change, since baroceptor 3 gather pressure timing, if baroceptor 3 10s it
Interior, its front and rear repeatedly pressure contrast collected does not vary widely, while liquid level sensor a2 does not collect liquid level signal
When, output signal is controlled electromagnetic relay group 30 by single-chip microcomputer 8, motor 5 is shut down, and opens magnetic valve a1, closes electromagnetism
Valve b4, restPoses, while alarm unit works, and light emitting diode 6 flashes, the sounding of buzzer 7.
Vacuum self priming pump of the present utility model by setting air extractor, open the pump stage discharge pump chamber 27 in gas,
Make pump chamber 27 to the external world into negative pressure state, and then the liquid of water inlet pipe 26 is flowed to pump chamber in the presence of external atmosphere pressure
27, realize it is automatic fill pump, return duct 25 is installed in the lower section of pump chamber 27, can reach after use noresidue liquid in pump chamber 27
Body, avoid at low ambient temperatures, freeze in pump chamber 27 due to retaining diversion, cause it not use immediately, and the bursting by freezing pump housing,
The phenomenon of motor 5 is damaged, there is good practical value.
Claims (10)
1. a kind of SCM Based vacuum self priming pump, it is characterised in that including base (14), base is provided with motor on (14)
(5), drive shaft (10) one end in motor (5) is sequentially connected photoelectricity speed counting device and air extractor, drive shaft (10) other end
Impeller (31) is connected by shaft coupling (24), impeller (31) is located in the pump chamber (27) affixed with motor (5), and pump chamber (27) passes through
Strong-willed pipe (9) connects air extractor, and delivery port (28) and water inlet pipe (26), described electricity are additionally provided with described pump chamber (27)
Machine is additionally provided with alarm unit and main control unit on (5).
A kind of 2. SCM Based vacuum self priming pump according to claim 1, it is characterised in that described strong-willed pipe
(9) baroceptor (3) and magnetic valve b (4) are provided with, baroceptor (3) is XGZP6868 type baroceptors, electromagnetism
Valve b (4) is normally closed solenoid valve.
A kind of 3. SCM Based vacuum self priming pump according to claim 2, it is characterised in that described delivery port
(28) magnetic valve a (1) is provided with, magnetic valve a (1) is normally open type magnetic valve.
A kind of 4. SCM Based vacuum self priming pump according to claim 3, it is characterised in that described main control unit
Including circuit substrate (23), single-chip microcomputer (8) is provided with circuit substrate (23), single-chip microcomputer (8) connects electromagnetism relay by wire
Device group (30), electromagnetic relay group (30) include the electromagnetic relay I (20), electromagnetic relay II (21) and the electromagnetism that are in parallel after
Electrical equipment III (22)；Electromagnetic relay I (20) is open type and is connected to magnetic valve b (4) and magnetic valve a (1), electromagnetism relay
Device II (21) is closed type and is connected with motor (5), and electromagnetic relay III (22) is open type.
A kind of 5. SCM Based vacuum self priming pump according to claim 4, it is characterised in that described alarm unit
Including the single-chip microcomputer (8), buzzer (7) and light emitting diode (6) connected by circuit successively.
A kind of 6. SCM Based vacuum self priming pump according to claim 4, it is characterised in that described single-chip microcomputer
(8) it is Msp430F2012 single-chip microcomputers.
A kind of 7. SCM Based vacuum self priming pump according to claim 4, it is characterised in that described pump chamber (27)
Top is provided with liquid level sensor a (2), pump chamber (27) from top to bottom total height 1/4 at be provided with liquid level sensor b (32),
Described liquid level sensor a (2) and liquid level sensor b (32) is respectively connected with single-chip microcomputer (8) and is that XKC-Y25-V types liquid level passes
Sensor；
The return duct (25) parallel with base (14), return duct (25) one end and water inlet are additionally provided with described pump chamber (27)
Manage (26) to connect, return duct (25) other end is connected with dewatering outlet (29), and dewatering outlet (29) are located at pump chamber (27) bottom.
A kind of 8. SCM Based vacuum self priming pump according to claim 4, it is characterised in that described photoelectricity meter speed
Device includes the photoelectricity speed counter (18) being erected on base (14), and electromagnetic clutch is provided with the top of photoelectricity speed counter (18),
Electromagnetic clutch includes the driving pulley (11) being oppositely arranged and sucker (19), and sucker (19) is socketed in drive shaft (10) and it
Side wall is provided with baffle plate (17), and described driving pulley (11) is socketed on multi-diameter shaft (12), and multi-diameter shaft (12), which is located at, to be fixed in
In the bearing block (16) of base (14) and it is also connected with air extractor；
It is H2010 type photoelectricity speed counters that described photoelectricity speed counter (18), which connects single-chip microcomputer (8) and its,；
Described electromagnetic clutch connects electromagnetic relay III (22) and is slipping toothed electromagnetic clutch.
A kind of 9. SCM Based vacuum self priming pump according to claim 8, it is characterised in that described driving pulley
(11) axiality with sucker (19) is not more than 0.05mm.
A kind of 10. SCM Based vacuum self priming pump according to claim 8, it is characterised in that described pumping dress
The pump head (15) including being erected on base (14) is put, is provided with gas outlet (13) on pump head (15), the pump shaft in pump head (15)
It is connected with multi-diameter shaft (12), described pump head (15) is rotary-vane vaccum pump pump head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720729574.1U CN206830463U (en) | 2017-06-22 | 2017-06-22 | A kind of SCM Based vacuum self priming pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720729574.1U CN206830463U (en) | 2017-06-22 | 2017-06-22 | A kind of SCM Based vacuum self priming pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206830463U true CN206830463U (en) | 2018-01-02 |
Family
ID=60777692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720729574.1U Expired - Fee Related CN206830463U (en) | 2017-06-22 | 2017-06-22 | A kind of SCM Based vacuum self priming pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206830463U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145468A (en) * | 2019-05-25 | 2019-08-20 | 锦州重型水泵有限公司 | Water pump keeps the method and device of negative pressure after shutting down |
| CN111677670A (en) * | 2020-06-19 | 2020-09-18 | 彭娜 | Drainage water replenishing device for sequentially starting pump sets of water station |
-
2017
- 2017-06-22 CN CN201720729574.1U patent/CN206830463U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145468A (en) * | 2019-05-25 | 2019-08-20 | 锦州重型水泵有限公司 | Water pump keeps the method and device of negative pressure after shutting down |
| CN110145468B (en) * | 2019-05-25 | 2024-03-12 | 锦州重型水泵有限公司 | Method and device for maintaining negative pressure after water pump is stopped |
| CN111677670A (en) * | 2020-06-19 | 2020-09-18 | 彭娜 | Drainage water replenishing device for sequentially starting pump sets of water station |
| CN113027774A (en) * | 2020-06-19 | 2021-06-25 | 彭娜 | Drainage water replenishing device for sequentially starting pump sets of water station |
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| 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: 20180102 Termination date: 20200622 |
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| CF01 | Termination of patent right due to non-payment of annual fee |