CN202145080U - Hollow blade drying and solvent recovery system - Google Patents
Hollow blade drying and solvent recovery system Download PDFInfo
- Publication number
- CN202145080U CN202145080U CN201120204033U CN201120204033U CN202145080U CN 202145080 U CN202145080 U CN 202145080U CN 201120204033 U CN201120204033 U CN 201120204033U CN 201120204033 U CN201120204033 U CN 201120204033U CN 202145080 U CN202145080 U CN 202145080U
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- solvent
- pipeline
- combined type
- drying
- condensation device
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- 239000002904 solvent Substances 0.000 title claims abstract description 51
- 238000001035 drying Methods 0.000 title claims abstract description 46
- 238000011084 recovery Methods 0.000 title abstract description 5
- 238000009833 condensation Methods 0.000 claims abstract description 43
- 230000005494 condensation Effects 0.000 claims abstract description 43
- 239000000428 dust Substances 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims description 29
- 230000008676 import Effects 0.000 claims description 21
- 238000007599 discharging Methods 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 8
- 239000004744 fabric Substances 0.000 abstract 3
- 238000007789 sealing Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 14
- 239000000498 cooling water Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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- Drying Of Solid Materials (AREA)
Abstract
The utility model provides a hollow blade drying and solvent recovery set, comprising a hollow blade type drying host, a cloth bag dust removing device, a draught fan, a combined type condensation device, a pressure fan, a heater, and a filter; a moisture gas outlet of the drying host is connected with the air inlet of the cloth bag dust removing device via a first pipeline, the air outlet of the cloth bag dust removing device is connected with a hot air inlet of the combined type condensation device via a second pipeline, the draught fan is in series connection on the second pipeline, a cold air outlet of the combined type condensation device is connected with the pressure fan via a third pipeline, the pressure fan is connected with the heater, the heater is connected with the filter via a fourth pipeline, and the filter is connected with a drying hot air inlet on an end cover of the drying host. The hollow blade drying and solvent recovery system are advantageous in that, application scope of drying host materials is wide, paste-shaped, slurry-shaped, particle-shaped, and powder-shaped materials can be indirectly heated. Since a sealing set is adopted, leakage of material dust and solvent steam can be prevented, and recovery of the solvent can be performed via condensation.
Description
Technical field
The utility model relates to the hollow blade drying and solvent reclaims unit.
Background technology
The hollow blade drying machine has higher heat transfer efficiency and heat-transfer area self-cleaning function, and dense arrangement hollow paddle on the hollow shaft, and thermal medium is through the hollow shaft blade of flowing through, conduction heating indirectly.Chinese patent number is that 200820037835.4 utility model patent specification discloses the sealed hollow blade drying machine of a kind of twin shaft; Comprise a housing chuck, the section of housing chuck is the W type, and the two ends of housing chuck are provided with end cap; Be provided with loam cake above the housing chuck; End cap is provided with two hollow shafts, and two hollow shafts are laid respectively in two grooves of W type, and two hollow shafts connect through gear; One of them hollow shaft is connected with reductor through gear, and reductor is connected with motor; Hollow shaft is provided with the hollow paddle, and the top of loam cake is provided with steam (vapor) outlet, and the left end of loam cake is provided with charging aperture, and the right-hand member of housing folder is provided with discharging opening, and the end of hollow shaft is provided with swivel joint.But because the solvent that some material to be dried contains has certain toxicity; The steam that in dry run, distributes can hurt site operation personnel and contaminated environment; And most of organic solvent has inflammable and explosive characteristic in air; So tail gas directly is discharged in the atmosphere, has certain potential safety hazard.
The utility model content
The purpose of the utility model is to propose a kind of hollow blade drying and solvent recovery unit that can prevent that material dust and solvent steam from leaking and also can reclaim solvent effectively.
For achieving the above object, the utility model is taked following technical scheme.Hollow blade drying that the utility model proposes and solvent reclaim unit; Comprise groomed oar blade profile main drying, main drying comprises support and shell, and shell is made up of the W clevis shell type drain pan of bottom and the end cap on top; One end of end cap is provided with charging aperture and heated drying air import; The other end is provided with the humid gas outlet, exports the condensation-water drain that same end is provided with discharging opening and communicates with chuck on the drain pan and with humid gas, and discharging opening is provided with discharger; The both sides of drain pan respectively are provided with the thermal medium import of leading to chuck; Be provided with two hollow shafts by same actuating unit drive operation arranged side by side in the drain pan, be equipped with the wedge type hollow blade on the hollow shaft, shell is all stretched out at the two ends of hollow shaft; Every hollow shaft is by the pair of bearings seat supports that is fixed on the frame, and the two ends of every hollow shaft connect thermal medium through swivel joint respectively and supply pipe and condensate output transistor; This unit also comprises bag-type dust collector, air-introduced machine, combined type condensation device, pressure fan, heater, filter; The humid gas outlet of said main drying is connected with the air inlet of said bag-type dust collector through first pipeline; The gas outlet of bag-type dust collector is connected with the hot blast import of said combined type condensation device through second pipeline; Said air-introduced machine is serially connected in second pipeline; The cold wind outlet of combined type condensation device is connected with said pressure fan through the 3rd pipeline; Pressure fan is connected with said heater, and heater is connected with said filter through the 4th pipeline, and the heated drying air import on the end cap of filter and said main drying is connected.
Said combined type condensation device comprises condensing tower and solvent cooler; Be respectively condensation chamber, washing chamber and fluid reservoir from top to bottom in the tower of said condensing tower; Be provided with some groups of bend pipe condenser pipes in the condensation chamber; Be provided with liquid distributor and packing layer in the washing chamber; The hot blast import that said cold combined type is coagulated device is arranged on the tower body position on the corresponding fluid reservoir of condensing tower top, and the cold wind outlet of said combined type condensation device is arranged on condensing tower tower body top, also is provided with solvent outlet and plasma discharge mouth on the tower body of condensing tower on the position of corresponding fluid reservoir; Said solvent cooler has solvent loop exit, solvent loop head; The solvent loop exit of solvent cooler is communicated with the liquid distributor of condensing tower through the 5th pipeline; The 5th pipeline is provided with circulating pump, and the solvent loop head of solvent cooler is connected with the outlet of the solvent of condensing tower.
Said combined type condensation device comprises inner fin pipe bundle condenser, gas-liquid separator and liquid collecting jar; Be provided with shell and tube cooler in the liquid collecting jar; Above-mentioned condenser and gas-liquid separator are connected on the liquid collecting jar and with the liquid collecting jar and communicate; The hot blast import of said combined type condensation device is arranged on the top of condenser, and the cold wind outlet of said combined type condensation device is arranged on the top of gas-liquid separator.
The utlity model has following good effect: the main drying wide application range of material of the utility model, can be to paste, pulpous state, graininess, granular material indirect.Owing to adopt closed system, can prevent leaking of material dust and solvent steam, through condensation solvent is reclaimed.The utility model adopts and to comprise cleaning dust in combined type the condensation device, particularly combined type condensation device, and efficiency of dust collection is high, and condenser, heater are less scaling.Dry gas after the condenser dehumidifying offers main drying, favourable raising drying efficiency after heating.
Description of drawings
Fig. 1 is the configuration diagram of embodiment 1.
Fig. 2 is the main drying diagrammatic sketch.
Fig. 3 is the main drying side view.
Fig. 4 is a combined type condensation apparatus structure diagrammatic sketch.
Fig. 5 is the liquid distributor diagrammatic sketch of combined type condensation device.
Fig. 6 is the combined type condensation apparatus structure diagrammatic sketch of embodiment 2.
The specific embodiment
See Fig. 1 to Fig. 5, the hollow blade drying of present embodiment and solvent reclaim unit, comprise groomed oar blade profile main drying 1, bag-type dust collector 2, air-introduced machine 3, combined type condensation device 4, pressure fan 5, heater 6, filter 7.
Said main drying 1 comprises support 10 and shell, and shell is made up of the W clevis shell type drain pan 1-2 of bottom and the end cap 1-1 on top, and the outside of drain pan 1-2 is provided with warming layer 1-h.The end of said end cap 1-1 is provided with charging aperture 1-a and heated drying air import 1-b, and the other end is provided with humid gas outlet 1-c, and drain pan 1-2 goes up and exports the condensation-water drain 1-d that the same end of 1-c is provided with discharging opening and communicates with chuck 1-f with humid gas.Charging aperture 1-a place is provided with star-like feeder 1-9, and the discharging opening place is provided with screw type discharger 1-3, and the both sides of drain pan 1-2 respectively are provided with the thermal medium import 1-e that leads to chuck 1-f.
Be provided with two hollow shaft 1-4 by same actuating unit 8 drive operations arranged side by side in the said drain pan 1-2, said actuating unit 8 is made up of motor 8-1, reductor 8-2 and gear drive 8-3.Be equipped with wedge type hollow blade 1-5 on the hollow shaft 1-4; Shell is all stretched out at the two ends of hollow shaft 1-4; Every hollow shaft 1-4 is supported by the pair of bearing 9 that is fixed on the frame 10, and the two ends of every hollow shaft 1-4 connect thermal medium through swivel joint 1-6 respectively and supply pipe 1-7 and condensate output transistor 1-8.
The bottom of said bag-type dust collector 2 is provided with discharging opening, and discharging opening is provided with two butterfly valve discharger 2-1.
Said combined type condensation device 4 comprises condensing tower 4-1 and solvent cooler 4-2; Be respectively condensation chamber 4-1-a, the 4-1-b of washing chamber and fluid reservoir 4-1-c from top to bottom in the tower of said condensing tower 4-1; Be provided with some groups of finned bend pipe condenser pipe 4-1-1 in the condensation chamber 4-1-a; Be provided with liquid distributor 4-1-2 and plastics many-sided ball packing layer 4-1-3 in the 4-1-b of washing chamber; Liquid distributor 4-2 forms perpendicular to the arm 4-2-2 that is responsible for 4-2-1 by being responsible for 4-2-1 and some, and person in charge 4-2-1 and arm 4-2-2 are provided with hole for water spraying.Cooling water among the above-mentioned bend pipe condenser pipe 4-1-1 is provided by the external refrigeration water circle device.
The hot blast import 4-j of said combined type condensation device 4 is arranged on the tower body position on the corresponding fluid reservoir 4-1-c of condensing tower 4-1 top; The cold wind outlet 4-h of said combined type condensation device 4 is arranged on condensing tower 4-1 tower body top, also is provided with solvent outlet 4-1-f and plasma discharge mouth 4-1-g on the tower body of condensing tower 4-1 on the position of corresponding fluid reservoir 4-1-c.The solvent that is deposited in condensing tower 4-1 bottom pulp is discharged by plasma discharge mouth 4-1-g.
Have shell and tube condenser in the said solvent cooler 4-2, housing is provided with solvent loop exit 4-2-a, solvent loop head 4-2-b, cooling water inlet 4-2-c, coolant outlet 4-2-d and unnecessary solvent outlet 4-2-e.Cooling water is provided by the external refrigeration water circle device.The solvent loop exit 4-2-a of solvent cooler 4-2 is communicated with the liquid distributor 4-1-2 of condensing tower 4-1 through the 5th pipeline 15; The 5th pipeline 15 is provided with circulating pump 4-3; The solvent loop head 4-2-b of solvent cooler 4-2 is connected with the solvent of condensing tower 4-1 outlet 4-1-f, realizes the circulation of solvent.
The humid gas outlet 1-c of said main drying 1 is connected with the air inlet of said bag-type dust collector 2 through first pipeline 11; The gas outlet of bag-type dust collector 2 is connected with the hot blast import 4-j of said combined type condensation device 4 through second pipeline 12; And on second pipeline 12 serial connection said air-introduced machine 3; The cold wind outlet 4-h of combined type condensation device 4 is connected with said pressure fan 5 through the 3rd pipeline 13; Pressure fan 5 is connected with said heater 6, and heater 6 is connected with said filter 7 through the 4th pipeline 14, and the heated drying air import 1-b on the end cap 1-1 of filter 7 and said main drying 1 is connected.On second pipeline 12, be provided with inert gas replenishment valve 16, be provided with exhaust-valve 17, on the 3rd pipeline 13, be provided with and catch up with oxygen valve 18 at the hot blast import 4-j place of condensing tower 4-1.
During this unit operation; Adopt inert gas shielding; Circular flow in closed system; Discharged by spiral discharging device 1-3 through main drying 1 dried material, the humid gas in the main drying is delivered to bag-type dust collector 2 by humid gas outlet 1-c, and the powder sedimentation after bag-type dust collector 2 separates is collected through two butterfly valve discharger 2-1 and discharged.Gas is through air-introduced machine 3; Send into combined type condensation device 4; Dry and cold gas through the condensed not dust-laden of washing; Flow through pressure fan 5, heater 6, filter 7, the heated drying air import 1-b through main drying 1 gets in the chamber of main drying 1, and the condensed water of generation is discharged from condensation-water drain 1-d.The thermal medium of importing among hollow shaft 1-4 of this unit and the wedge type hollow blade 1-5 is a steam, and thermal medium supplies pipe 1-7 to import hollow shaft 1-4 through thermal medium, and the condensed water of generation is discharged through condensate output transistor 1-8.
Embodiment 2.
The difference of embodiment 2 and embodiment 1, combined type condensation device 4 differences of taking are seen Fig. 6, combined type condensation device 4 tool inner fin pipe bundle condenser 4-4, gas-liquid separator 4-5 and liquid collecting jar 4-6 are provided with shell and tube cooler 4-7 in the liquid collecting jar 4-6.Above-mentioned inner fin pipe bundle condenser 4-4 and gas-liquid separator 4-5 are connected liquid collecting jar 4-6 and upward and with liquid collecting jar 4-6 communicate; The hot blast import 4-j of said combined type condensation device 4 is arranged on the top of condenser 4-4, and the cold wind outlet 4-h of said combined type condensation device 4 is arranged on the top of gas-liquid separator 4-5.
Claims (3)
1. hollow blade drying and solvent reclaim unit; Comprise groomed oar blade profile main drying (1); Main drying comprises support (10) and shell; Shell is made up of the W clevis shell type drain pan (1-2) of bottom and the end cap (1-1) on top; One end of end cap (1-1) is provided with charging aperture (1-a) and heated drying air import (1-b); The other end is provided with humid gas outlet (1-c); Drain pan (1-2) is gone up and is exported the condensation-water drain (1-d) that (1-c) same end is provided with discharging opening and communicates with chuck with humid gas, and discharging opening is provided with discharger (1-3), and the both sides of drain pan (1-2) respectively are provided with the thermal medium import (1-e) of leading to chuck (1-f); Be provided with the two hollow shafts (1-4) by same actuating unit (8) drive operation arranged side by side in the drain pan (1-2); Be equipped with wedge type hollow blade (1-5) on the hollow shaft (1-4), shell is all stretched out at the two ends of hollow shaft (1-4), and every hollow shaft (1-4) is supported by the pair of bearing (9) that is fixed on the frame (10); The two ends of every hollow shaft (1-4) connect thermal medium through swivel joint (1-6) respectively and supply pipe (1-7) and condensate output transistor (1-8), and it is characterized in that: this unit also comprises bag-type dust collector (2), air-introduced machine (3), combined type condensation device (4), pressure fan (5), heater (6), filter (7); The humid gas outlet (1-c) of said main drying (1) is connected with the air inlet of said bag-type dust collector (2) through first pipeline (11); The gas outlet of bag-type dust collector (2) is connected with the hot blast import (4-j) of said combined type condensation device (4) through second pipeline (12); Said air-introduced machine (3) is serially connected in second pipeline (12); The cold wind outlet (4-h) of combined type condensation device (4) is connected with said pressure fan (5) through the 3rd pipeline (13); Pressure fan (5) is connected with said heater (6); Heater (6) is connected with said filter (7) through the 4th pipeline (14), and the heated drying air import (1-b) on the end cap (1-1) of filter (7) and said main drying (1) is connected.
2. hollow blade drying according to claim 1 and solvent reclaim unit; It is characterized in that: said combined type condensation device (4) comprises condensing tower (4-1) and solvent cooler (4-2); Be respectively condensation chamber (4-1-a), washing chamber (4-1-b) and fluid reservoir (4-1-c) from top to bottom in the tower of said condensing tower (4-1); Be provided with some groups of bend pipe condenser pipes (4-1-1) in the condensation chamber (4-1-a); Be provided with liquid distributor (4-1-2) and packing layer (4-1-3) in the washing chamber (4-1-b); The hot blast import (4-j) that said cold combined type is coagulated device (4) is arranged on the tower body position on the corresponding fluid reservoir of condensing tower (4-1) (4-1-c) top; The cold wind outlet (4-h) of said combined type condensation device (4) is arranged on condensing tower (4-1) tower body top, also is provided with solvent outlet (4-1-f) and plasma discharge mouth (4-1-g) on the tower body of condensing tower (4-1) on the position of corresponding fluid reservoir (4-1-c); Said solvent cooler (4-2) has solvent loop exit (4-2-a), solvent loop head (4-2-b); The solvent loop exit (4-2-a) of solvent cooler (4-2) is communicated with the liquid distributor (4-1-2) of condensing tower (4-1) through the 5th pipeline (15); The 5th pipeline (15) is provided with circulating pump (4-3), and the solvent loop head (4-2-b) of solvent cooler (4-2) is connected with the solvent of condensing tower (4-1) outlet (4-1-f).
3. hollow blade drying according to claim 1 and solvent reclaim unit; It is characterized in that: said combined type condensation device (4) comprises inner fin pipe bundle condenser (4-4), gas-liquid separator (4-5) and liquid collecting jar (4-6); Be provided with shell and tube cooler (4-7) in the liquid collecting jar (4-6); Above-mentioned condenser (4-4) and gas-liquid separator (4-5) are connected liquid collecting jar (4-6) and upward and with liquid collecting jar (4-6) communicate; The hot blast import (4-j) of said combined type condensation device (4) is arranged on the top of condenser (4-4), and the cold wind outlet (4-h) of said combined type condensation device (4) is arranged on the top of gas-liquid separator (4-5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120204033U CN202145080U (en) | 2011-06-16 | 2011-06-16 | Hollow blade drying and solvent recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120204033U CN202145080U (en) | 2011-06-16 | 2011-06-16 | Hollow blade drying and solvent recovery system |
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| Publication Number | Publication Date |
|---|---|
| CN202145080U true CN202145080U (en) | 2012-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201120204033U Expired - Fee Related CN202145080U (en) | 2011-06-16 | 2011-06-16 | Hollow blade drying and solvent recovery system |
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| Country | Link |
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| CN (1) | CN202145080U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103288325A (en) * | 2013-05-30 | 2013-09-11 | 浙江莱美纺织印染科技有限公司 | Printing and dyeing sludge drying treatment system |
| CN103288326A (en) * | 2013-05-30 | 2013-09-11 | 浙江莱美纺织印染科技有限公司 | Drying treatment system of printing and dyeing sludge |
| CN104165512A (en) * | 2012-03-16 | 2014-11-26 | 陆文光 | Multifunctional dryer system |
| CN105157394A (en) * | 2015-07-21 | 2015-12-16 | 苏州市自力化工设备有限公司 | Pharmacy mushroom dreg harmless treatment system |
| CN105509459A (en) * | 2016-01-14 | 2016-04-20 | 江苏搏斯威化工设备工程有限公司 | Heat energy utilizing system of hollow blade drying machine |
| CN108613480A (en) * | 2018-05-02 | 2018-10-02 | 芜湖众梦电子科技有限公司 | A kind of consumptive material high efficiency drying unit for 3D printing |
| CN108970250A (en) * | 2018-06-29 | 2018-12-11 | 广西康纳环保有限公司 | One kind removing haze formaldehyde purifier |
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2011
- 2011-06-16 CN CN201120204033U patent/CN202145080U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165512A (en) * | 2012-03-16 | 2014-11-26 | 陆文光 | Multifunctional dryer system |
| CN104165512B (en) * | 2012-03-16 | 2016-02-17 | 陆文光 | Multifunctional dryer system |
| CN103288325A (en) * | 2013-05-30 | 2013-09-11 | 浙江莱美纺织印染科技有限公司 | Printing and dyeing sludge drying treatment system |
| CN103288326A (en) * | 2013-05-30 | 2013-09-11 | 浙江莱美纺织印染科技有限公司 | Drying treatment system of printing and dyeing sludge |
| CN105157394A (en) * | 2015-07-21 | 2015-12-16 | 苏州市自力化工设备有限公司 | Pharmacy mushroom dreg harmless treatment system |
| CN105157394B (en) * | 2015-07-21 | 2018-06-12 | 苏州美泓环保科技有限公司 | Pharmacy bacterium dregs innocent processing system |
| CN105509459A (en) * | 2016-01-14 | 2016-04-20 | 江苏搏斯威化工设备工程有限公司 | Heat energy utilizing system of hollow blade drying machine |
| CN108613480A (en) * | 2018-05-02 | 2018-10-02 | 芜湖众梦电子科技有限公司 | A kind of consumptive material high efficiency drying unit for 3D printing |
| CN108613480B (en) * | 2018-05-02 | 2021-01-19 | 亳州易泽信息科技有限公司 | A consumptive material high efficiency drying device for 3D prints |
| CN108970250A (en) * | 2018-06-29 | 2018-12-11 | 广西康纳环保有限公司 | One kind removing haze formaldehyde purifier |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: JIANGSU XIANFENG DRYING ENGINEERING CO., LTD. Free format text: FORMER NAME: CHANGZHOU XIANFENG DRYING EQUIPMENT CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 213175 Zheng Industrial Park, Wujin District, Jiangsu, Changzhou Patentee after: JIANGSU XIANFENG DRYING ENGINEERING CO., LTD. Address before: 213111 Zheng Industrial Park, Wujin District, Jiangsu, Changzhou Patentee before: Changzhou Xianfeng Drying Equipment Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120215 Termination date: 20190616 |
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| CF01 | Termination of patent right due to non-payment of annual fee |