CN216073112U - Multifunctional sewage treatment equipment - Google Patents
Multifunctional sewage treatment equipment Download PDFInfo
- Publication number
- CN216073112U CN216073112U CN202122689823.8U CN202122689823U CN216073112U CN 216073112 U CN216073112 U CN 216073112U CN 202122689823 U CN202122689823 U CN 202122689823U CN 216073112 U CN216073112 U CN 216073112U
- Authority
- CN
- China
- Prior art keywords
- wall
- sewage treatment
- sewage
- spring
- baffle
- 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
- 239000010865 sewage Substances 0.000 title claims abstract description 71
- 239000003814 drug Substances 0.000 claims abstract description 33
- 238000003756 stirring Methods 0.000 claims abstract description 27
- 238000004140 cleaning Methods 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims description 33
- 230000008878 coupling Effects 0.000 claims description 14
- 238000010168 coupling process Methods 0.000 claims description 14
- 238000005859 coupling reaction Methods 0.000 claims description 14
- 238000010030 laminating Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 10
- 238000001125 extrusion Methods 0.000 abstract description 3
- 239000007858 starting material Substances 0.000 abstract 1
- 238000001914 filtration Methods 0.000 description 8
- 239000012535 impurity Substances 0.000 description 8
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 230000005489 elastic deformation Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Images
Landscapes
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The utility model belongs to the field of sewage treatment, and particularly relates to multifunctional sewage treatment equipment which comprises a treatment device and a feed inlet; a feed inlet is fixedly connected inside the processing device; a quantitative dosing unit is arranged in the processing device and comprises a dosing tank, a cover plate assembly, a motor, a stirring assembly, a cam, a baffle and a reset assembly; through the upset diaphragm, make the torsional spring receive the extrusion and produce deformation, alright to the inside medicament that adds of dosing tank, the starter motor, make the motor drive the puddler, cleaning brush and cam rotate, through cam extrusion baffle, make the baffle drive first spring and produce and draw and rise when inside gliding carrying out of spout, and then make the baffle carry out reciprocating motion, thereby to the effect of the inside ration unloading of realizing of processing apparatus, the function of sewage rapid processing has been realized, the problem of the efficiency reduction of current sewage treatment equipment treatment sewage has been solved, the treatment sewage efficiency of processing apparatus has been improved.
Description
Technical Field
The utility model relates to the field of sewage treatment, in particular to multifunctional sewage treatment equipment.
Background
With the development of science and technology, the problem of environmental pollution is increasingly remarkable.
Environmental pollution is divided into a plurality of types, wherein water pollution is serious, and operators generally place sewage into sewage treatment equipment for treatment.
When the existing sewage treatment equipment treats sewage, the internal sewage needs to be precipitated for a long time, so that impurities are deposited and further treated, a large amount of time is consumed, and the sewage treatment efficiency is reduced; therefore, a multifunctional sewage treatment device is provided to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In order to make up the defects of the prior art and solve the problem that the sewage treatment efficiency of the conventional sewage treatment equipment is reduced, the utility model provides multifunctional sewage treatment equipment.
The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model relates to a multifunctional sewage treatment device, which comprises a treatment device and a feeding hole; a feed inlet is fixedly connected inside the processing device; the inside ration that is provided with of processing apparatus adds the medicine unit, and the ration adds the medicine unit and include dosing tank, apron subassembly, motor, stirring subassembly, cam, baffle and reset assembly, the dosing tank rigid coupling is at the processing apparatus outer wall, the apron subassembly is connected at the dosing tank outer wall through the pivot, the motor rigid coupling is at the processing apparatus outer wall, the stirring subassembly rotates to be connected at the processing apparatus inner wall, the cam rigid coupling is at the stirring subassembly outer wall, baffle laminating cam outer wall, reset assembly sets up inside the processing apparatus, adds the medicine unit through being provided with the ration to can improve the time of processing apparatus to sewage treatment, further improve the holistic practicality of device.
Preferably, the apron subassembly includes diaphragm and torsional spring, the diaphragm is connected at the dosing tank outer wall through the pivot, the torsional spring rigid coupling is at the diaphragm outer wall, through being provided with the apron subassembly to can avoid the condition that the medicament was revealed.
Preferably, the stirring subassembly includes puddler and cleaning brush, the puddler rigid coupling is at the motor outer wall, the cleaning brush rigid coupling is at the puddler outer wall, through being provided with the stirring subassembly, has improved the reaction rate between sewage and the medicament greatly, has further accelerated the appearance of the inside impurity of sewage.
Preferably, the reset assembly comprises a sliding groove and a first spring, the sliding groove is formed in the processing device, the first spring is fixedly connected to the inner wall of the sliding groove, the reset assembly is arranged on the inner wall of the sliding groove, the baffle can be tightly attached to the outer wall of the cam to move, the baffle can reciprocate, and quantitative discharging is achieved in the processing device.
Preferably, the inside filter unit that is provided with of feed inlet, and filter unit include filter screen, seal assembly, inserted block, dead lever and second spring, the filter screen is inserted and is established inside the feed inlet, the seal assembly laminating is at the filter screen outer wall, the inserted block is inserted and is established inside the filter screen, the dead lever rigid coupling is at the feed inlet inner wall, the second spring rigid coupling is at the dead lever outer wall, through being provided with filter unit to can reduce follow-up sewage treatment's time, and then improve the whole effect to sewage treatment of device.
Preferably, seal assembly includes first sealed piece and the sealed piece of second, first sealed piece is glued at the filter screen outer wall, the sealed piece of second is glued at the feed inlet inner wall, through being provided with seal assembly, can avoid the inside sewage of feed inlet to produce and reveal, causes secondary pollution's phenomenon.
The utility model has the advantages that:
1. according to the utility model, through overturning the transverse plate, the torsion spring is extruded to deform, so that a medicament can be added into the dosing tank, the motor is started, the motor drives the stirring rod, the cleaning brush and the cam to rotate, the baffle plate is extruded by the cam, the baffle plate slides in the sliding chute and drives the first spring to be pulled up, and further the baffle plate reciprocates, so that the quantitative blanking effect is realized in the treatment device, the function of quickly treating sewage is realized, the problem of low sewage treatment efficiency of the conventional sewage treatment equipment is solved, and the sewage treatment efficiency of the treatment device is improved;
2. according to the utility model, sewage is fed into the feed inlet, so that the sewage is filtered through the filter screen, the insert block drives the second spring to extrude the fixed rod by pulling the insert block until the insert block is separated from the inside of the first sealing block, then the filter screen is pulled, so that the filter screen drives the first sealing block to be separated from the outer wall of the second sealing block, the first sealing block and the second sealing block are not attached any more, the filtering function is realized, the problem of inconvenience in treatment of visible substances in the sewage is solved, and the practicability of the treatment device is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic perspective view of a first embodiment;
FIG. 2 is a schematic cross-sectional view of a first embodiment;
FIG. 3 is a side cross-sectional view of the cross plate according to the first embodiment;
FIG. 4 is a schematic diagram of a structure shown in FIG. 2 according to the first embodiment;
FIG. 5 is a schematic sectional view of a second front view according to the first embodiment;
fig. 6 is a schematic structural view of a gasket according to a second embodiment.
In the figure: 1. a processing device; 2. a feed inlet; 3. a dosing box; 4. a transverse plate; 5. a torsion spring; 6. a motor; 7. a stirring rod; 8. a cleaning brush; 9. a cam; 10. a baffle plate; 11. a chute; 12. a first spring; 13. a filter screen; 14. a first seal block; 15. a second seal block; 16. inserting a block; 17. fixing the rod; 18. a second spring; 19. and a gasket.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1-5, a multifunctional sewage treatment apparatus comprises a treatment device 1 and a feed inlet 2; a feeding hole 2 is fixedly connected inside the processing device 1; a quantitative dosing unit is arranged in the processing device 1 and comprises a dosing tank 3, a cover plate assembly, a motor 6, a stirring assembly, a cam 9, a baffle 10 and a reset assembly, wherein the dosing tank 3 is fixedly connected to the outer wall of the processing device 1, the cover plate assembly is connected to the outer wall of the dosing tank 3 through a rotating shaft, the motor 6 is fixedly connected to the outer wall of the processing device 1, the stirring assembly is rotatably connected to the inner wall of the processing device 1, the cam 9 is fixedly connected to the outer wall of the stirring assembly, the baffle 10 is attached to the outer wall of the cam 9, and the reset assembly is arranged in the processing device 1; when the device works, a certain amount of medicament can be stored by arranging the dosing box 3, frequent addition of an operator is not needed, after the medicament in the dosing box 3 is used up, the torsion spring 5 is extruded to deform by turning over the transverse plate 4, the medicament can be added into the dosing box 3, the leakage of the medicament can be avoided by arranging the cover plate component, the motor 6 drives the cam 9 to rotate by starting the motor 6, the baffle 10 is extruded by the cam 9, the baffle 10 slides in the chute 11 and drives the first spring 12 to generate pulling, the first spring 12 generates elastic deformation by pulling, the baffle 10 can closely adhere to the outer wall of the cam 9 to move by arranging the reset component, the baffle 10 reciprocates, the quantitative blanking effect is realized in the processing device 1, the stirring rod 7 is driven to synchronously rotate by the rotation of the motor 6, make puddler 7 carry out intensive mixing to the inside sewage of processing apparatus 1 and medicament, make sewage and medicament fuse, accelerate the production of the inside impurity of sewage, it drives 8 synchronous rotations to rotate the cleaning brush through puddler 7, make cleaning brush 8 can clean the remaining dirt of processing apparatus 1 inner wall, avoid the dirt deposit, through being provided with the stirring subassembly, the reaction rate between sewage and the medicament has been improved greatly, the appearance of the inside impurity of sewage has further been accelerated, through being provided with quantitative medicine adding unit, thereby can improve processing apparatus 1 time to sewage treatment, the holistic practicality of device has further been improved.
The cover plate assembly comprises a transverse plate 4 and a torsion spring 5, the transverse plate 4 is connected to the outer wall of the dosing tank 3 through a rotating shaft, and the torsion spring 5 is fixedly connected to the outer wall of the transverse plate 4; during operation, through being provided with dosing tank 3, can store a certain amount of medicament, need not operating personnel and frequently adds, after the inside medicament of dosing tank 3 used up, through upset diaphragm 4, make torsional spring 5 receive the extrusion and produce deformation, alright to 3 inside medicaments that add of dosing tank, through being provided with the apron subassembly to can avoid the condition that the medicament was revealed.
The stirring assembly comprises a stirring rod 7 and a cleaning brush 8, the stirring rod 7 is fixedly connected to the outer wall of the motor 6, and the cleaning brush 8 is fixedly connected to the outer wall of the stirring rod 7; the during operation, drive puddler 7 through motor 6 pivoted in the time and rotate in step, make puddler 7 carry out intensive mixing to 1 inside sewage of processing apparatus and medicament, make sewage fuse with the medicament, accelerate the production of the inside impurity of sewage, rotate through puddler 7 and drive cleaning brush 8 and rotate in step, make cleaning brush 8 can clean 1 inner wall remaining dirt of processing apparatus, avoid the dirt deposit, through being provided with the stirring subassembly, the reaction rate between sewage and the medicament has been improved greatly, further accelerated the appearance of the inside impurity of sewage.
The reset assembly comprises a chute 11 and a first spring 12, the chute 11 is arranged in the processing device 1, and the first spring 12 is fixedly connected to the inner wall of the chute 11; during operation, extrude baffle 10 through cam 9 for baffle 10 drives first spring 12 and produces and draw and rise when 11 inside gliding that carry on of spout, makes first spring 12 receive to draw and rises and produce elastic deformation, through being provided with the subassembly that resets, thereby makes baffle 10 can closely laminate cam 9 outer wall and remove, and then makes baffle 10 carry out reciprocating motion, thereby realizes the effect of ration unloading to processing apparatus 1 inside.
A filtering unit is arranged in the feed port 2 and comprises a filtering net 13, a sealing assembly, an inserting block 16, a fixing rod 17 and a second spring 18, the filtering net 13 is inserted in the feed port 2, the sealing assembly is attached to the outer wall of the filtering net 13, the inserting block 16 is inserted in the filtering net 13, the fixing rod 17 is fixedly connected to the inner wall of the feed port 2, and the second spring 18 is fixedly connected to the outer wall of the fixing rod 17; when in work, the sewage is fed into the feed inlet 2 and filtered by the filter screen 13, the filter screen 13 is arranged, so that visible substances in the sewage are primarily screened, the subsequent sewage treatment effect is improved, by pulling the insertion block 16, the insertion block 16 drives the second spring 18 to extrude the fixing rod 17, so that the second spring 18 is extruded to generate elastic deformation until the insertion block 16 is separated from the inside of the first sealing block 14, then the filter screen 13 is pulled, so that the filter screen 13 drives the first sealing block 14 to separate from the outer wall of the second sealing block 15, the first sealing block 14 and the second sealing block 15 are not attached, by arranging the sealing component, the phenomenon that the sewage in the feeding hole 2 leaks to cause secondary pollution can be avoided, and by arranging the filtering unit, thereby reducing the time of subsequent sewage treatment and further improving the effect of the whole device on sewage treatment.
The sealing assembly comprises a first sealing block 14 and a second sealing block 15, the first sealing block 14 is glued on the outer wall of the filter screen 13, and the second sealing block 15 is glued on the inner wall of the feed port 2; during operation draws filter screen 13 after that for filter screen 13 drives first sealed piece 14 and breaks away from the sealed 15 outer walls of second, makes first sealed piece 14 and the sealed 15 pieces of second no longer laminate, through being provided with seal assembly, can avoid the inside sewage of feed inlet 2 to produce and reveal, causes secondary pollution's phenomenon.
Example two
Referring to fig. 6, in a first comparative example, as another embodiment of the present invention, a sealing gasket 19 is adhered to an outer wall of the transverse plate 4, and the sealing gasket 19 is made of rubber; during operation, the sealing gasket 19 is provided to further improve the sealing of the horizontal plate 4 against the dosing tank 3.
The working principle is that sewage is fed into the feed inlet 2 and filtered by the filter screen 13, the filter screen 13 is arranged, so that visible substances in the sewage are primarily screened, the subsequent sewage treatment effect is improved, by pulling the insertion block 16, the insertion block 16 drives the second spring 18 to extrude the fixing rod 17, so that the second spring 18 is extruded to generate elastic deformation until the insertion block 16 is separated from the inside of the first sealing block 14, then the filter screen 13 is pulled, so that the filter screen 13 drives the first sealing block 14 to separate from the outer wall of the second sealing block 15, the first sealing block 14 and the second sealing block 15 are not attached, by arranging the sealing component, the phenomenon that the sewage in the feeding hole 2 leaks to cause secondary pollution can be avoided, and by arranging the filtering unit, thereby reducing the time of subsequent sewage treatment and further improving the effect of the whole device on sewage treatment.
By arranging the dosing box 3, a certain amount of medicament can be stored, frequent addition by an operator is not needed, after the medicament in the dosing box 3 is used up, the torsion spring 5 is extruded to deform by turning the transverse plate 4, the medicament can be added into the dosing box 3, the leakage of the medicament can be avoided by arranging the cover plate component, the motor 6 drives the cam 9 to rotate by starting the motor 6, the baffle 10 is extruded by the cam 9, the baffle 10 slides in the chute 11 and drives the first spring 12 to generate tensile lift, the first spring 12 generates elastic deformation by tensile lift, the baffle 10 can be tightly attached to the outer wall of the cam 9 to move by arranging the reset component, the baffle 10 can reciprocate, the quantitative blanking effect is realized in the processing device 1, and the stirring rod 7 is driven to synchronously rotate by the rotation of the motor 6, make puddler 7 carry out intensive mixing to the inside sewage of processing apparatus 1 and medicament, make sewage and medicament fuse, accelerate the production of the inside impurity of sewage, it drives 8 synchronous rotations to rotate the cleaning brush through puddler 7, make cleaning brush 8 can clean the remaining dirt of processing apparatus 1 inner wall, avoid the dirt deposit, through being provided with the stirring subassembly, the reaction rate between sewage and the medicament has been improved greatly, the appearance of the inside impurity of sewage has further been accelerated, through being provided with quantitative medicine adding unit, thereby can improve processing apparatus 1 time to sewage treatment, the holistic practicality of device has further been improved.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed.
Claims (6)
1. The utility model provides a multi-functional sewage treatment device which characterized in that: comprises a processing device (1) and a feeding hole (2); a feeding hole (2) is fixedly connected inside the processing device (1);
the utility model discloses a medicine processing device, including processing apparatus (1), the inside ration of being provided with of processing apparatus (1) adds the medicine unit, and the ration adds the medicine unit and include dosing tank (3), apron subassembly, motor (6), stirring subassembly, cam (9), baffle (10) and reset assembly, dosing tank (3) rigid coupling is at processing apparatus (1) outer wall, the apron subassembly is connected at dosing tank (3) outer wall through the pivot, motor (6) rigid coupling is at processing apparatus (1) outer wall, the stirring subassembly rotates to be connected at processing apparatus (1) inner wall, cam (9) rigid coupling is at stirring subassembly outer wall, baffle (10) laminating cam (9) outer wall, reset assembly sets up inside processing apparatus (1).
2. The multifunctional sewage treatment apparatus of claim 1, wherein: the apron subassembly includes diaphragm (4) and torsional spring (5), diaphragm (4) are connected at dosing tank (3) outer wall through the pivot, torsional spring (5) rigid coupling is in diaphragm (4) outer wall.
3. The multifunctional sewage treatment apparatus of claim 2, wherein: the stirring assembly comprises a stirring rod (7) and a cleaning brush (8), the stirring rod (7) is fixedly connected to the outer wall of the motor (6), and the cleaning brush (8) is fixedly connected to the outer wall of the stirring rod (7).
4. The multifunctional sewage treatment apparatus of claim 3, wherein: the reset assembly comprises a sliding groove (11) and a first spring (12), the sliding groove (11) is formed in the processing device (1), and the first spring (12) is fixedly connected to the inner wall of the sliding groove (11).
5. The multifunctional sewage treatment apparatus of claim 4, wherein: feed inlet (2) inside is provided with filter unit, and filter unit includes filter screen (13), seal assembly, inserted block (16), dead lever (17) and second spring (18), filter screen (13) are inserted and are established feed inlet (2) inside, seal assembly laminates at filter screen (13) outer wall, inserted block (16) are inserted and are established inside filter screen (13), dead lever (17) rigid coupling is at feed inlet (2) inner wall, second spring (18) rigid coupling is at dead lever (17) outer wall.
6. The multifunctional sewage treatment apparatus of claim 5, wherein: the sealing assembly comprises a first sealing block (14) and a second sealing block (15), the first sealing block (14) is glued to the outer wall of the filter screen (13), and the second sealing block (15) is glued to the inner wall of the feed port (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122689823.8U CN216073112U (en) | 2021-11-04 | 2021-11-04 | Multifunctional sewage treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122689823.8U CN216073112U (en) | 2021-11-04 | 2021-11-04 | Multifunctional sewage treatment equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216073112U true CN216073112U (en) | 2022-03-18 |
Family
ID=80659311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122689823.8U Expired - Fee Related CN216073112U (en) | 2021-11-04 | 2021-11-04 | Multifunctional sewage treatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216073112U (en) |
-
2021
- 2021-11-04 CN CN202122689823.8U patent/CN216073112U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110202816A (en) | Environmentally friendly equipment for separating liquid from solid | |
| CN110170353A (en) | A kind of capsicum removes a machine | |
| CN212018894U (en) | A agitating unit for refuse treatment | |
| CN207221782U (en) | A kind of agitating device for being used to produce Fluorspar Powder | |
| CN216073112U (en) | Multifunctional sewage treatment equipment | |
| CN209322702U (en) | Folded spiral shell machine is squeezed in sludge dewatering | |
| CN210287592U (en) | Water-saving eiderdown cleaning machine | |
| CN217651096U (en) | Poultry manure resource recycling device | |
| CN217230326U (en) | Agitating unit for sewage treatment | |
| CN215288203U (en) | Waste water recovery device used in green building construction | |
| CN210492391U (en) | Take cleaning function's industry meat grinder | |
| CN113426160A (en) | Mixed fire fighting equipment of shampoo | |
| CN211159385U (en) | Lubricating grease heating emulsifying stirring device | |
| CN113461207A (en) | Oil field fracturing flow-back liquid sewage purification treatment device | |
| CN211842733U (en) | Environmental protection plastics piece belt cleaning device | |
| CN219541319U (en) | Pretreatment device for stamping waste of sheet metal part | |
| CN220737221U (en) | Mixing arrangement that pharmaceutical preparation production and processing used | |
| CN217051864U (en) | Garbage penetrating fluid adjusting device | |
| CN213854132U (en) | A agitated vessel for peppery strip processing | |
| CN217072953U (en) | Compounding device is used in rubber production | |
| CN214389153U (en) | Sewage treatment device for environmental protection | |
| CN219502528U (en) | PU surface treatment agent processing agitated vessel | |
| CN213349215U (en) | Integrated sewage environment-friendly treatment device | |
| CN219440842U (en) | Sewage treatment device | |
| CN215613656U (en) | Degradable cellulose sponge belt cleaning device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220318 |