CN210481222U - Drying-machine feed structure that lees fermentation treatment system made organic fertilizer - Google Patents
Drying-machine feed structure that lees fermentation treatment system made organic fertilizer Download PDFInfo
- Publication number
- CN210481222U CN210481222U CN201921572568.5U CN201921572568U CN210481222U CN 210481222 U CN210481222 U CN 210481222U CN 201921572568 U CN201921572568 U CN 201921572568U CN 210481222 U CN210481222 U CN 210481222U
- Authority
- CN
- China
- Prior art keywords
- feeding
- cavity
- rotating shaft
- wall
- base
- 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
- 239000003895 organic fertilizer Substances 0.000 title claims abstract description 24
- 238000000855 fermentation Methods 0.000 title claims abstract description 12
- 230000004151 fermentation Effects 0.000 title claims abstract description 12
- 238000003756 stirring Methods 0.000 claims abstract description 31
- 238000007599 discharging Methods 0.000 claims abstract description 8
- 238000009527 percussion Methods 0.000 claims abstract description 6
- 230000003116 impacting effect Effects 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000002994 raw material Substances 0.000 abstract description 25
- 239000003337 fertilizer Substances 0.000 abstract description 19
- 230000000694 effects Effects 0.000 abstract description 6
- 238000001035 drying Methods 0.000 abstract description 4
- 238000000227 grinding Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 230000000903 blocking effect Effects 0.000 description 2
- 206010006514 bruxism Diseases 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
Landscapes
- Fertilizers (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The utility model discloses a lees fermentation treatment system has drying-machine feed structure of organic fertilizer, the on-line screen storage device comprises a base, the inside bottom cavity of having seted up of base, welded fastening has the feeding case on the base, the feeding cavity has been seted up to feeding incasement portion, feeding case top welded fastening has the reinforced funnel that is linked together with the feeding cavity, use the bearing to run through to rotate on the feeding case and be connected with two crushing gyro wheels, feeding case lower extreme welded fastening has the discharging pipe that is linked together with the feeding cavity, the discharging pipe runs through the lateral wall of base, be equipped with agitating unit jointly in bottom cavity and the feeding cavity, be equipped with percussion device on the feeding case outer wall. This scheme has designed a can fine solution fertilizer raw materials stoving not good effect device, smashes the stirring and has handled the fertilizer raw materials, has improved drying-machine drying efficiency, and the striking has made the adhesion break away from at the fertilizer raw materials of charging box inner wall, has improved reinforced efficiency.
Description
Technical Field
The utility model relates to a fertilizer stoving technical field especially relates to a lees fermentation treatment system has drying-machine feed structure of organic fertilizer.
Background
The preparation of wine from vinasse is a traditional process technology, a large amount of organic matters are usually left in vinasse after the preparation of wine, the organic matters are sources of a large amount of raw materials for preparing organic fertilizers, and a drying process is needed when the organic fertilizers are treated.
Traditional fertilizer stoving feeding does not do any processing to the raw materials that takes out in the lees, and unprocessed fertilizer raw materials mostly glues glutinous agglomeration, directly gets into the drying-machine after, because the fertilizer raw materials is heated inhomogeneously, causes the drying-machine stoving effect not good, in addition at the feeding process, the fertilizer raw materials easily glues glutinous feed mechanism, causes the feeding inconvenient, and the present urgent need to wait to design a fine drying-machine feed mechanism who solves this type of problem.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a dryer feeding structure for organic fertilizer prepared by vinasse fermentation treatment.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a lees fermentation treatment system has drying-machine feed structure of organic fertilizer, includes the base, the inside bottom cavity of having seted up of base, welded fastening has the feeding case on the base, the feeding cavity has been seted up to feeding incasement portion, feeding case top welded fastening has the reinforced funnel that is linked together with the feeding cavity, it runs through the rotation and is connected with two crushing gyro wheels to use the bearing on the feeding case, feeding case lower extreme welded fastening has the discharging pipe that is linked together with the feeding cavity, the discharging pipe runs through the lateral wall of base, be equipped with agitating unit jointly in bottom cavity and the feeding cavity, be equipped with percussion device on the feeding case outer wall.
Preferably, agitating unit includes agitator motor, agitator motor welded fastening is on the inner wall of base, the bottom of feeding case runs through the bearing and rotates and be connected with first pivot and second pivot, all cup jointed a first gear, two in first pivot and the second pivot first gear is located bottom cavity and intermeshing, agitator motor's output shaft and second pivot welded fastening, first pivot passes through the bearing and rotates the connection on the base inner wall, first pivot and second pivot are in one section equal welded fastening of feeding cavity and are had a plurality of stirring rod.
Preferably, the striking device includes the guide arm, guide arm welded fastening is on the right side outer wall of feeding case, the slider has been cup jointed in the slip on the guide arm, welded fastening has the connecting rod on the slider, welded fastening has a plurality of striking piece on the connecting rod, two the equal interference fit of part that crushing roller is located the feeding case has a second gear, two second gear intermeshing is close to be connected with the slide bar through round pin hub rotation on the second gear of slider, the slide bar passes through the round pin hub rotation and connects on the slider.
Preferably, two crushing gyro wheel symmetric distribution is in the feeding cavity, and two the meshing department of crushing gyro wheel is just under feeding funnel, two crushing tooth on the crushing gyro wheel only sets up in the feeding cavity and not contact with feeding cavity and agitating unit, two crushing gyro wheel does not set up crushing tooth with the feeding case rotation junction.
Preferably, the stirring rods are distributed on the parts, located in the feeding cavity, of the first rotating shaft and the second rotating shaft in a staggered mode, the length of each stirring rod is smaller than the shortest distance between the first rotating shaft and the second rotating shaft, and the shortest distance between the first rotating shaft and the inner wall of the feeding cavity, the shortest distance between the second rotating shaft and the inner wall of the feeding cavity and the shortest distance between the second rotating shaft and the inner wall of the feeding cavity are larger than the length of each stirring rod.
Preferably, a support frame is welded and fixed on the outer wall of the feeding box, a crushing motor is welded and fixed on the support frame, and a second gear far away from the sliding rod is coaxially and fixedly connected with an output shaft of the crushing motor.
The beneficial effects of this utility lie in:
1. need set up two crushing gyro wheels symmetries in the feeding cavity, and the meshing department of two crushing gyro wheels lies in just under the feed hopper, carries out shredding with the fertilizer raw materials of blocking like this can be fine, and the fertilizer raw materials after smashing can the stirring under agitating unit's effect. After the organic fertilizer raw materials after the crushing and stirring procedures enter the dryer, the drying effect is better due to more uniform loosening.
2. The crushing motor drives the sliding block to do reciprocating motion on the guide rod through the two second gears and the sliding rod, the sliding rod connected with the guide rod on the guide rod is enabled to impact the outer wall of the feeding box in a reciprocating mode, organic fertilizer raw materials adhered to the inner wall of the feeding box are separated easily, the feeding mechanism is enabled not to have the phenomenon that the feeding speed is too slow and feeding is blocked, and the whole feeding process is guaranteed.
To sum up: this scheme has designed a can fine solution fertilizer raw materials stoving not good effect device, smashes the stirring and has handled the fertilizer raw materials, has improved drying-machine drying efficiency, and the striking has made the adhesion break away from at the fertilizer raw materials of charging box inner wall, has improved reinforced efficiency.
Drawings
Fig. 1 is a schematic structural diagram of a feeding structure of a dryer for processing organic fertilizer by vinasse fermentation.
Fig. 2 is a partial schematic view of a dryer feeding structure striking device for processing organic fertilizer by vinasse fermentation.
Fig. 3 is a side view of the feeding structure of the dryer for fermenting distiller's grains to produce organic fertilizer.
In the figure: the device comprises a base 1, a first rotating shaft 2, a stirring motor 3, a bottom cavity 4, a first gear 5, a second rotating shaft 6, a feeding box 7, a stirring rod 8, a feeding cavity 9, a crushing roller 10, a feeding hopper 11, an impact block 12, a connecting rod 13, a sliding rod 14, a sliding block 15, a guide rod 16, a discharging pipe 17, a supporting frame 18, a crushing motor 19 and a second gear 20.
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.
Referring to fig. 1-3, a drying-machine feed structure that lees fermentation treatment system made organic fertilizer, including base 1, bottom cavity 4 has been seted up to base 1 inside, welded fastening has feed case 7 on base 1, feed cavity 9 has been seted up to feed case 7 inside, welded fastening has the feeding funnel 11 that is linked together with feed cavity 9 above feed case 7, it runs through the rotation and is connected with two crushing gyro wheels 10 to use the bearing on the feed case 7, feed case 7 lower extreme welded fastening has the discharging pipe 17 that is linked together with feed cavity 9, discharging pipe 17 runs through the lateral wall of base 1 and is connected with external drying-machine, be equipped with agitating unit jointly in bottom cavity 4 and the feed cavity 9, be equipped with percussion device on the outer wall of feed case 7.
Agitating unit includes agitator motor 3, agitator motor 3 welded fastening is on base 1's inner wall, the bottom of feeding case 7 is run through the bearing and rotates and be connected with first pivot 2 and second pivot 6, first gear 5 has all been cup jointed in first pivot 2 and the second pivot 6, two first gear 5 are located bottom cavity 4 and intermeshing, agitator motor 3's output shaft and 6 welded fastening of second pivot, first pivot 2 rotates through the bearing and connects on base 1 inner wall, first pivot 2 and second pivot 6 are in one section equal welded fastening in feeding cavity 9 have a plurality of stirring rod 8, the stirring rod stirs the fertilizer raw materials in the feeding cavity, make the fertilizer raw materials evenly loose, be convenient for dry.
The percussion device includes guide arm 16, guide arm 16 welded fastening is on the right side outer wall of feeding case 7, sliding sleeve has slider 15 on the guide arm 16, welded fastening has connecting rod 13 on slider 15, welded fastening has a plurality of striking block 12 on connecting rod 13, two equal interference fit of part that smash gyro wheel 1 is located the feeding case 7 outside has a second gear 20, two second gear 20 intermeshing, be close to on the second gear 20 of slider 15 and rotate through the round pin axle and be connected with slide bar 14, slide bar 14 rotates through the round pin axle and connects on slider 15, percussion device makes the organic fertilizer raw materials of adhesion on the feeding incasement wall drop easily, the feeding process has been guaranteed.
Two crushing gyro wheels 10 symmetric distribution are in feeding cavity 9, and the meshing department of two crushing gyro wheels 10 is in under feed hopper 11 just, crushing tooth on two crushing gyro wheels 10 only sets up in feeding cavity 9 and not contact with feeding cavity 9 and agitating unit, two crushing gyro wheels 10 rotate the junction with feeding case 7 and do not set up crushing tooth, the fine completion to the fertilizer raw materials of crushing gyro wheel smashes the process, make the fertilizer raw materials of blocking broken division, be convenient for follow-up stirring processing.
The part that a plurality of stirring rod 8 dislocation distribution is in feeding cavity 9 at first pivot 2 and second pivot 6, the length of stirring rod 8 is less than the shortest distance of first pivot 2 and second pivot 6, the shortest distance of first pivot 2 and second pivot 6 and feeding cavity 9 inner wall is greater than the length of stirring rod 8, the condition that whole agitating unit can not take place collision each other has been guaranteed, welded fastening has support frame 18 on the feeding case 7 outer wall, welded fastening has crushing motor 19 on the support frame 18, the coaxial fixed connection of output shaft of second gear 20 and crushing motor 19 of keeping away from slide bar 14.
In the utility model, the grinding motor 19 is started, because the output shaft of the grinding motor 19 is welded and fixed with one grinding roller 10, the grinding roller 10 can rotate and rotate through the second gear 20 sleeved on the grinding roller 10, and then the other second gear 20 meshed with the grinding roller is driven to rotate, finally, two grinding rollers 10 are meshed and rotate, organic fertilizer raw materials to be processed are added from the feeding funnel 11, because the two grinding rollers 10 are provided with grinding teeth, the grinding teeth extrude and cut the organic fertilizer raw materials in the meshing and rotating process of the two grinding rollers 10, and finally, the grinding process is finished;
starting the stirring motor 3, wherein an output shaft of the stirring motor 3 is fixedly welded with the second rotating shaft 6, so that the second rotating shaft 6 is driven to rotate, the second rotating shaft 6 drives the first gear 5 sleeved on the second rotating shaft to rotate, the first gear 5 can drive the other first gear 5 meshed with the second rotating shaft to rotate, so that the first rotating shaft 2 is driven to rotate, finally, the stirring rod 8 which is fixedly welded on the first rotating shaft 2 and the second rotating shaft 6 rotates in the feeding cavity 9, a stirring process is completed on the crushed organic fertilizer raw materials, and the uniformly stirred organic fertilizer raw materials enter the dryer through the discharge pipe 17 to be dried;
the impacting device, the rotation of the second gear 20 on the crushing roller 10 which is not connected with the crushing motor 19 drives the slide bar 14 to rotate, the slide bar 14 pulls the slide block 16 to do left-right reciprocating motion along the guide rod 16, a plurality of impacting blocks 12 on the connecting rod 13 are driven to be close to and far away from the outer wall of the feeding box 7, one limit position of the impacting blocks 12 just contacts with the outer wall of the feeding box 7, the effect that the impacting blocks 12 impact the outer wall of the feeding box 7 in a reciprocating mode is achieved, and organic fertilizer raw materials adhered to the inner wall of the feeding box 7 can fall off.
It is worth mentioning that: the stirring motor 3 and the crushing motor 19 in the utility model can be a YEJ200L-4-30KW three-phase motor.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. A dryer feeding structure for preparing organic fertilizer by fermenting vinasse, which comprises a base (1), it is characterized in that a bottom cavity (4) is arranged inside the base (1), a feeding box (7) is welded and fixed on the base (1), a feeding cavity (9) is arranged in the feeding box (7), a feeding funnel (11) communicated with the feeding cavity (9) is welded and fixed above the feeding box (7), the feeding box (7) is connected with two crushing rollers (10) in a penetrating and rotating way by using bearings, a discharge pipe (17) communicated with the feeding cavity (9) is fixedly welded at the lower end of the feeding box (7), discharging pipe (17) run through the lateral wall of base (1), be equipped with agitating unit jointly in bottom cavity (4) and feeding cavity (9), be equipped with percussion device on feeding case (7) outer wall.
2. The feeding structure of the dryer for fermented lees processing manufactured organic fertilizer according to claim 1, it is characterized in that the stirring device comprises a stirring motor (3), the stirring motor (3) is welded and fixed on the inner wall of the base (1), the bottom of the feeding box (7) is in through rotary connection with a first rotating shaft (2) and a second rotating shaft (6) through a bearing, the first rotating shaft (2) and the second rotating shaft (6) are respectively sleeved with a first gear (5), the two first gears (5) are positioned in the bottom cavity (4) and are mutually meshed, the output shaft of the stirring motor (3) is welded and fixed with the second rotating shaft (6), the first rotating shaft (2) is rotatably connected to the inner wall of the base (1) through a bearing, a plurality of stirring rods (8) are welded and fixed on the sections, located in the feeding cavity (9), of the first rotating shaft (2) and the second rotating shaft (6).
3. The dryer feeding structure for the organic fertilizer manufactured through fermentation treatment of vinasse according to claim 1, wherein the impacting device comprises a guide rod (16), the guide rod (16) is fixedly welded on the outer wall of the right side of the feeding box (7), a sliding block (15) is sleeved on the guide rod (16) in a sliding mode, a connecting rod (13) is fixedly welded on the sliding block (15), a plurality of impacting blocks (12) are fixedly welded on the connecting rod (13), two parts, located outside the feeding box (7), of the two crushing rollers (10) are in interference fit with a second gear (20), the two second gears (20) are meshed with each other, a sliding rod (14) is rotatably connected to the second gear (20) close to the sliding block (15) through a pin shaft, and the sliding rod (14) is rotatably connected to the sliding block (15) through a pin shaft.
4. The feeding structure of the dryer for the organic fertilizer manufactured by the fermentation treatment of the vinasse according to claim 1, wherein the two crushing rollers (10) are symmetrically distributed in the feeding cavity (9), the meshing part of the two crushing rollers (10) is just right below the feeding hopper (11), the crushing teeth on the two crushing rollers (10) are only arranged in the feeding cavity (9) and are not in contact with the feeding cavity (9) and the stirring device, and the rotary connection part of the two crushing rollers (10) and the feeding box (7) is not provided with the crushing teeth.
5. The feeding structure of the dryer for the organic fertilizer prepared by fermenting the vinasse according to the claim 2, wherein a plurality of stirring rods (8) are distributed in a staggered manner on the parts of the first rotating shaft (2) and the second rotating shaft (6) in the feeding cavity (9), the length of the stirring rods (8) is less than the shortest distance between the first rotating shaft (2) and the second rotating shaft (6), and the shortest distance between the first rotating shaft (2) and the second rotating shaft (6) and the inner wall of the feeding cavity (9) is greater than the length of the stirring rods (8).
6. The feeding structure of the dryer for the organic fertilizer manufactured by the fermentation treatment of the vinasse as claimed in claim 3, wherein a support frame (18) is fixed on the outer wall of the feeding box (7) in a welding manner, a crushing motor (19) is fixed on the support frame (18) in a welding manner, and a second gear (20) far away from the sliding rod (14) is coaxially and fixedly connected with an output shaft of the crushing motor (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921572568.5U CN210481222U (en) | 2019-09-20 | 2019-09-20 | Drying-machine feed structure that lees fermentation treatment system made organic fertilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921572568.5U CN210481222U (en) | 2019-09-20 | 2019-09-20 | Drying-machine feed structure that lees fermentation treatment system made organic fertilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210481222U true CN210481222U (en) | 2020-05-08 |
Family
ID=70541550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921572568.5U Expired - Fee Related CN210481222U (en) | 2019-09-20 | 2019-09-20 | Drying-machine feed structure that lees fermentation treatment system made organic fertilizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210481222U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116573957A (en) * | 2023-07-13 | 2023-08-11 | 山东绿陇生物科技有限公司 | Roller fungus adding machine for production and processing of compound microbial fertilizer |
| CN117102201A (en) * | 2023-10-12 | 2023-11-24 | 中建三局集团华南有限公司 | Super high-rise building rubbish transfer buffer |
| CN119100847A (en) * | 2024-10-29 | 2024-12-10 | 碳原科技(云浮)有限公司 | A kind of livestock and poultry manure fermentation device |
-
2019
- 2019-09-20 CN CN201921572568.5U patent/CN210481222U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116573957A (en) * | 2023-07-13 | 2023-08-11 | 山东绿陇生物科技有限公司 | Roller fungus adding machine for production and processing of compound microbial fertilizer |
| CN116573957B (en) * | 2023-07-13 | 2023-09-19 | 山东绿陇生物科技有限公司 | Roller fungus adding machine for production and processing of compound microbial fertilizer |
| CN117102201A (en) * | 2023-10-12 | 2023-11-24 | 中建三局集团华南有限公司 | Super high-rise building rubbish transfer buffer |
| CN119100847A (en) * | 2024-10-29 | 2024-12-10 | 碳原科技(云浮)有限公司 | A kind of livestock and poultry manure fermentation device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210481222U (en) | Drying-machine feed structure that lees fermentation treatment system made organic fertilizer | |
| CN214508522U (en) | Soil treatment device before organic tea planting | |
| CN222610014U (en) | Stirring device with auxiliary feeding function for dry-mixed mortar processing | |
| CN221183071U (en) | Reducing mechanism is used in polyethylene miropowder preparation | |
| CN221310435U (en) | Regenerated organic planting soil stirring device | |
| CN220386741U (en) | Material high-speed mixing and scattering machine | |
| CN213699634U (en) | A organic fertilizer mixing arrangement for improving agricultural productivity | |
| CN214439496U (en) | Seedling soil reducing mechanism | |
| CN213791831U (en) | Fertile production facility of granule with supplementary liquid structure that supplies | |
| CN212039911U (en) | Mixing stirring device for bio-organic fertilizer production | |
| CN214299915U (en) | Organic fertilizer fermentation equipment | |
| CN212937633U (en) | Automatic flour fermentation device for food factory | |
| CN209438804U (en) | The efficient rockover remover of beet drum-type | |
| CN220677624U (en) | Multistage crushing and mixing device for bio-organic fertilizer | |
| CN217093854U (en) | Cleaning device of soil pulverizer | |
| CN222270851U (en) | A raw material stirring device for blister packaging processing | |
| CN222990045U (en) | Biological organic fertilizer fermenting installation | |
| CN211801094U (en) | Soil material reducing mechanism of matrix of growing seedlings | |
| CN213494101U (en) | Novel fertilizer raw material crusher | |
| CN221492769U (en) | Effectual crushing Fertilizer reducing mechanism | |
| CN222729029U (en) | Spiral feeding device for fertilizer processing | |
| CN215654895U (en) | Antiseized fertilizer extrusion granulator rabbling mechanism | |
| CN220546908U (en) | Novel feeding device | |
| CN220759376U (en) | Fertilizer rubbing crusher | |
| CN213396455U (en) | Drying rotary kiln for producing industrial waste residue type mixed ore powder |
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: 20200508 Termination date: 20200920 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |