CN210389616U - Movable concrete curing room - Google Patents
Movable concrete curing room Download PDFInfo
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- CN210389616U CN210389616U CN201921022658.7U CN201921022658U CN210389616U CN 210389616 U CN210389616 U CN 210389616U CN 201921022658 U CN201921022658 U CN 201921022658U CN 210389616 U CN210389616 U CN 210389616U
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Abstract
The utility model discloses a mobilizable concrete curing room, include the box that comprises bottom plate, side box, roof and connecting piece, one side of connecting piece is provided with the lifting hook, is provided with in the box to be used for being independent maintenance room and the mid-board between the transition respectively with its inner space, is provided with a plurality of test blocks maintenance frame within a definite time of maintenance, and the water drainage tank has been seted up to the bottom plate within a definite time of maintenance, is provided with the maintenance door on the mid-board, is provided with the transition door on the side box within a definite time of transition, is provided with the control box within a definite time of transition. The utility model has simple structure and reasonable design, and can simultaneously connect the bottom plate and the side box body or the top plate and the side box body by using one connecting piece; set up the lifting hook on the connecting piece simultaneously, avoid destroying the structure of box at the hoist and mount in-process, hoist and mount convenience, the mid-board divide into between independent maintenance and transition with the box, has realized the interior wet-dry separation of box, has temperature and humidity control function between the maintenance simultaneously.
Description
Technical Field
The utility model belongs to the technical field of the building, concretely relates to mobilizable concrete curing room.
Background
Because commercial premixed concrete and commercial dry powder mortar are increasingly adopted in the current building construction projects, and the important method for inspecting the concrete or mortar per se on a construction site according to the national standard is standard curing, the standard curing work of the concrete test block or the mortar test block is more and more important.
After concrete is poured, if the concrete is hot and air-dried and is not maintained in time, the concrete curing moisture in the concrete can be evaporated too fast to form a dehydration phenomenon, so that cement particles which form gel cannot be fully hydrated, cannot be converted into stable crystals, lack of sufficient cohesive force, and accordingly, flaky or powdery falling can occur on the surface of the concrete. Further, when the concrete does not have sufficient strength, premature evaporation of water causes large shrinkage deformation and cracks due to drying shrinkage. Therefore, the curing of the concrete in the initial stage after the concrete is poured is very important, the curing should be performed immediately after the concrete is finally set, and the curing should be performed immediately after the pouring of the hard concrete is completed.
After the concrete is poured and pounded, the concrete can be gradually set and hardened mainly because of the hydration of the cement, and the hydration requires proper temperature and humidity conditions, so the concrete must be cured in order to ensure that the concrete has proper hardening conditions and the strength of the concrete is continuously increased.
Most former building sites adopt the temporary brickwork room of building oneself as standard curing room more, and along with the rise of prefabricated house, each building site begins to choose the prefabricated house again as the curing room in recent years. Indoor maintenance equipment is more the eight doors of five flowers, and the standard maintenance mode of irregularity also should be transported to and comes, for example adopt the water pipe to face water humidification test block etc. has greatly influenced the standardization of maintenance condition. In most construction sites, the maintenance equipment is transferred after the completion of the project, and the situation of scattered and inconvenient occurs.
In summary, due to the fact that various irregular conditions exist in the standard curing room of each construction site, the standard curing quality of the test block is greatly affected, and therefore a movable concrete curing room is needed.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide a movable concrete curing room, which has simple structure and reasonable design, and can simultaneously connect the bottom plate and the side box body or the top plate and the side box body by using a connecting piece; set up the lifting hook on the connecting piece simultaneously, avoid destroying the structure of box at the hoist and mount in-process, hoist and mount convenience, the mid-board divide into between independent maintenance and transition with the box, has realized the interior wet-dry separation of box, has temperature and humidity control function between the maintenance simultaneously.
In order to solve the technical problem, the utility model discloses a technical scheme is: a mobilizable concrete curing room which characterized in that: the test block maintenance box comprises a box body consisting of a bottom plate, side box bodies, a top plate and a connecting piece, wherein first connecting holes are formed in the bottom plate and the top plate, second connecting holes are formed in the peripheral wall of each side box body, the connecting piece is provided with a side box connecting plate used for connecting the side box bodies and a fan-shaped connecting plate connected with the side box connecting plate, a third connecting hole matched with the second connecting hole is formed in the side box connecting plate, a fourth connecting hole matched with the first connecting hole is formed in the fan-shaped connecting plate, a lifting hook is arranged on one side, away from the fan-shaped connecting plate, of the side box connecting plate, a middle partition wall used for enabling the internal space of the side box connecting plate to be independent respectively and a transition room is arranged in the box body, a plurality of test block maintenance frames are arranged in the maintenance room, a drainage groove is formed in the bottom plate in the maintenance room, a maintenance door, a control box is arranged in the transition room; be provided with PLC controller and power module in the control box, the input of PLC controller is connected with parameter input unit, is used for detecting the temperature detecting element of temperature in the maintenance room, is used for detecting the humidity detecting element of humidity in the maintenance room, the output of PLC controller is connected with first drive unit, second drive unit and numerical value display unit, first drive unit has connect the temperature regulation unit who is used for adjusting the temperature between the maintenance, second drive unit has connect the humidity control unit who is used for adjusting humidity between the maintenance.
The movable concrete curing room is characterized in that: be provided with the maintenance pipe in the maintenance room, be provided with the flow valve on the maintenance pipe, the one end of maintenance pipe is connected with the maintenance pump that sets up in the transition room, the other end of maintenance pipe is connected with a plurality of branch pipes, the branch pipe all is connected with the shower head of setting in test block maintenance frame top.
The movable concrete curing room is characterized in that: and the maintenance pump and the flow valve are connected with the output end of the PLC.
The movable concrete curing room is characterized in that: one end of the transition part is indirectly exposed out of the connecting pipe of the side box body, and the other end of the connecting pipe is connected with the maintenance pump.
The movable concrete curing room is characterized in that: the cross section of the side box body is rectangular, and the side box connecting plate comprises a first connecting plate and a second connecting plate which is arranged at a right angle with the first connecting plate.
The movable concrete curing room is characterized in that: at least one window is arranged in the transition room.
The movable concrete curing room is characterized in that: the lifting hook is provided with anti-skid particles.
The movable concrete curing room is characterized in that: the temperature adjusting unit adopts special refrigeration house temperature control equipment.
The movable concrete curing room is characterized in that: the humidity adjusting unit adopts an ultrasonic humidifier.
Compared with the prior art, the utility model has the following advantage:
1. the utility model has the advantages of simple structure and reasonable design, realize and use convenient operation.
2. In the utility model, the bottom plate and the side box body or the top plate and the side box body can be connected simultaneously by using one connecting piece; set up the lifting hook on the connecting piece simultaneously, avoid destroying the structure of box at the hoist and mount in-process, hoist and mount convenience, consequently both can accomplish through the connecting piece and can dismantle the connection, can accomplish hoist and mount again, the part is few, and it is convenient to install, excellent in use effect.
3. The utility model discloses in, the mid-board divide into between independent maintenance and transition with the box, has realized the wet-dry separation in the box, has prolonged the life of curing room, has improved the turnover number of times.
4. The utility model discloses in, the temperature in the maintenance room of temperature detecting element real-time detection, and send the temperature value that detects for the PLC controller, the PLC controller compares the temperature value that temperature detecting element detected and the temperature threshold value that sets up through parameter input unit, the temperature value that detects when temperature detecting element is greater than the temperature threshold value that parameter input unit set up, the first drive unit of PLC controller drive, first drive unit drives the work of temperature regulation unit, the temperature value that detects until temperature detecting element is not more than the temperature threshold value that parameter input unit set up, first drive unit stop work, consequently, the control to the internal temperature of maintenance room is realized.
5. The utility model discloses in, humidity detecting element is used for detecting the humidity in the maintenance room, and send the humidity value that detects for the PLC controller, the PLC controller compares the humidity value that humidity detecting element detected and the humidity threshold value that sets up through parameter input unit, the humidity value that detects when humidity detecting element is greater than the humidity threshold value that parameter input unit set up, PLC controller drive second drive unit, second drive unit drives humidity control unit work, the humidity value that detects until humidity detecting element is not more than the humidity threshold value that parameter input unit set up, second drive unit stop work, consequently, realize the control to humidity in the maintenance room.
In summary, the utility model has simple structure and reasonable design, and the bottom plate and the side box body or the top plate and the side box body can be connected simultaneously by using one connecting piece; set up the lifting hook on the connecting piece simultaneously, avoid destroying the structure of box at the hoist and mount in-process, hoist and mount convenience, the mid-board divide into between independent maintenance and transition with the box, has realized the interior wet-dry separation of box, has temperature and humidity control function between the maintenance simultaneously.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the structure of fig. 1 with the top plate removed.
Fig. 3 is a schematic structural diagram of the bottom plate of the present invention.
Fig. 4 is a schematic structural view of the front side of the connecting member of the present invention.
Fig. 5 is a schematic structural view of the back of the connecting member of the present invention.
Fig. 6 is a schematic block circuit diagram of the present invention.
Description of reference numerals:
1-a bottom plate; 2-a top plate; 3, a side box body;
4-an intermediate wall; 5-a transition gate; 6, a window;
7-a numerical value display unit; 8, maintaining the door; 9-a control box;
10-a connector; 11 — a first connection hole; 12-a shower head;
13-connecting pipe; 14-a humidity adjustment unit; 15-a PLC controller;
16-a power supply module; 17-a temperature detection unit; 18-a humidity detection unit;
19-parameter input unit; 20 — a first drive unit; 21-a temperature regulating unit;
22 — a second drive unit; 23-flow valve; 24-maintenance pump;
25-test block curing frame; 26-a drainage tank; 101 — a first connection plate;
102-a second connecting plate; 103-sector connecting plate; 104 — third connection hole;
105-a fourth connection hole; 106 — hook; 31 — second connection hole.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and embodiments of the present invention.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
As shown in fig. 1 to 6, the utility model discloses a box that comprises bottom plate 1, side box 3, roof 2 and connecting piece 10 has all seted up first connecting hole 11 on bottom plate 1 and the roof 2, second connecting hole 31 has been seted up to the perisporium of side box 3, connecting piece 10 have be used for connecting the side case connecting plate of side box 3 and with fan-shaped connecting plate 103 that the side case connecting plate meets, set up on the side case connecting plate with the third connecting hole 104 that second connecting hole 31 suited, set up on fan-shaped connecting plate 103 with the fourth connecting hole 105 that first connecting hole 11 suited, the one side that fan-shaped connecting plate 103 was kept away from to the side case connecting plate is provided with lifting hook 106.
In actual use, the bottom plate 1, the side box bodies 3, the top plate 2 and the connecting pieces 10 form a box body, and the box body needs to be disassembled and transported in the use process, so that the bottom plate 1, the side box bodies 3 and the top plate 2 are detachably connected through the connecting pieces 10 and the nut pairs, and one connecting piece 10 can be simultaneously connected with the bottom plate 1 and the side box bodies 3 or the top plate 2 and the side box bodies 3; meanwhile, the lifting hook 106 is arranged on the connecting piece 10, the structure of the box body is prevented from being damaged in the lifting process, the lifting is convenient, the detachable connection and the lifting can be completed through the connecting piece 10, the number of parts is small, the installation is convenient and fast, and the using effect is good.
The interior of the box body is provided with a middle partition wall 4 which is used for respectively providing independent maintenance rooms and transition rooms for the internal space of the box body, a plurality of test block maintenance frames 25 are arranged in the maintenance rooms, a drainage groove 26 is formed in a bottom plate 1 in the maintenance rooms, a maintenance door 8 is arranged on the middle partition wall 4, a transition door 5 is arranged on a side box body 3 in the transition rooms, and a control box 9 is arranged in the transition rooms.
In actual use, the test block curing frame 25 is divided into a plurality of layers for placing concrete test blocks. As water or other liquid needs to be sprayed in the concrete curing process, a drainage channel is arranged on the bottom plate 1. When the maintenance method is specifically implemented, a waterproof layer is laid in the maintenance room.
The intermediate wall 4 divides the box body into an independent curing room and a transition room, so that the dry-wet separation in the box body is realized, the service life of the curing room is prolonged, and the turnover frequency is improved.
Be provided with PLC controller 15 and power module 16 in the control box 9, the input of PLC controller 15 is connected with parameter input unit 19, is used for detecting the temperature detecting element 17 of temperature in the maintenance room, is used for detecting the humidity detecting element 18 of humidity in the maintenance room, the output of PLC controller 15 is connected with first drive unit 20, second drive unit 22 and numerical display unit 7, first drive unit 20 has connect the temperature regulating unit 21 that is used for adjusting the temperature between the maintenance, second drive unit 22 has connect the humidity control unit 14 that is used for adjusting humidity between the maintenance.
During the in-service use, temperature detecting element 17 real-time detection maintenance is interior temperature, and send the temperature value that detects for PLC controller 15, PLC controller 15 compares the temperature value that temperature detecting element 17 detected and the temperature threshold value that sets up through parameter input unit 19, the temperature value that detects as temperature detecting element 17 is greater than the temperature threshold value that parameter input unit 19 set up, PLC controller 15 drives first drive unit 20, first drive unit 20 drives temperature regulation unit 21 work, until the temperature value that temperature detecting element 17 detected is not more than the temperature threshold value that parameter input unit 19 set up, first drive unit 20 stop work.
The humidity detection unit 18 is used for detecting the humidity in the curing room, and send the detected humidity value to the PLC controller 15, the PLC controller 15 compares the humidity value detected by the humidity detection unit 18 with the humidity threshold set by the parameter input unit 19, when the humidity value detected by the humidity detection unit 18 is greater than the humidity threshold set by the parameter input unit 19, the PLC controller 15 drives the second driving unit 22, the second driving unit 22 drives the humidity adjustment unit 14 to work, until the humidity value detected by the humidity detection unit 18 is not greater than the humidity threshold set by the parameter input unit 19, the second driving unit 22 stops working.
After the box body equipment is installed, the box body can be normally used only by connecting water and electricity. After the engineering is finished, the box body can be hoisted and carried through the lifting hook 106 only by cutting off a water source and a power supply, the use is convenient, and the applicability is good.
Be provided with PLC controller 15 and power module 16 in the control box 9, the input of PLC controller 15 is connected with parameter input unit 19, is used for detecting the temperature detecting element 17 of temperature in the maintenance room, is used for detecting the humidity detecting element 18 of humidity in the maintenance room, the output of PLC controller 15 is connected with first drive unit 20, second drive unit 22 and numerical display unit 7, first drive unit 20 has connect the temperature regulating unit 21 that is used for adjusting the temperature between the maintenance, second drive unit 22 has connect the humidity control unit 14 that is used for adjusting humidity between the maintenance.
It should be noted that, in the present invention, the parameter input unit 19, the temperature detecting unit 17, the humidity detecting unit 18, the first driving unit 20, the second driving unit 22 and the numerical value displaying unit 7 are prior art devices, and can be directly purchased and connected to the PLC controller 15 for use.
In this embodiment, be provided with the maintenance pipe in the maintenance room, be provided with flow valve 23 on the maintenance pipe, the one end of maintenance pipe is connected with the maintenance pump 24 that sets up in the transition room, the other end of maintenance pipe is connected with a plurality of branch pipes, the branch pipe all is connected with the shower head 12 that sets up above test block maintenance frame 25.
During the in-service use, can rise the maintenance liquid pump in the maintenance pipe through maintenance pump 24 to on spraying the concrete test block that is located on test block maintenance frame 25 through branch pipe and shower head 12, realize the maintenance to the concrete test block, can set up through flow valve 23 and spray flow and speed, avoid spraying excessive destruction concrete test block.
In this embodiment, the maintenance pump 24 and the flow valve 23 are both connected to the output end of the PLC controller 15.
During practical use, the PLC 15 is used for controlling the start and stop of the maintenance pump 24, and the PLC 15 is used for controlling the opening degree of the valve channel of the flow valve 23.
In this embodiment, the transition portion has a connecting pipe 13 having one end exposed to the side case 3, and the other end of the connecting pipe 13 is connected to the maintenance pump 24.
During the in-service use, connecting pipe 13 is used for external maintenance bottle or maintenance pond, avoids placing maintenance liquid in the box manpower and the vigor that need pay for, labour saving and time saving, and it is convenient to use.
In this embodiment, the cross section of the side box body 3 is rectangular, and the side box connecting plate includes a first connecting plate 101 and a second connecting plate 102 arranged at a right angle to the first connecting plate 101.
In this embodiment, at least one window 6 is provided in the transition.
In this embodiment, the hooks 106 are provided with anti-slip particles.
In this embodiment, the temperature adjusting unit 21 is a special refrigeration storage temperature control device. The temperature adjusting unit 21 is a special refrigeration house temperature control device and is durable and durable.
In the present embodiment, the humidity control unit 14 employs an ultrasonic humidifier. The humidity adjusting unit 14 adopts an ultrasonic humidifier, which is more durable and has a better humidifying effect than a traditional anion humidifier.
Wherein those matters not described in detail in the specification are prior art known to those skilled in the art.
The aforesaid, only be the embodiment of the utility model discloses an it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses technical scheme's within the scope of protection.
Claims (9)
1. A mobilizable concrete curing room which characterized in that: comprises a box body consisting of a bottom plate (1), a side box body (3), a top plate (2) and a connecting piece (10), wherein a first connecting hole (11) is formed in each of the bottom plate (1) and the top plate (2), a second connecting hole (31) is formed in the peripheral wall of each side box body (3), the connecting piece (10) is provided with a side box connecting plate used for connecting the side box bodies (3) and a fan-shaped connecting plate (103) connected with the side box connecting plate, a third connecting hole (104) matched with the second connecting hole (31) is formed in the side box connecting plate, a fourth connecting hole (105) matched with the first connecting hole (11) is formed in the fan-shaped connecting plate (103), and a lifting hook (106) is arranged on one side, far away from the fan-shaped connecting plate (103), of the side box,
the test block maintenance box is characterized in that an intermediate wall (4) used for enabling the internal space of the test block maintenance box to be independent and a transition room is arranged in the box body, a plurality of test block maintenance frames (25) are arranged in the maintenance room, a drainage groove (26) is formed in a bottom plate (1) in the maintenance room, a maintenance door (8) is arranged on the intermediate wall (4), a transition door (5) is arranged on a side box body (3) in the transition room, and a control box (9) is arranged in the transition room;
be provided with PLC controller (15) and power module (16) in control box (9), the input of PLC controller (15) is connected with parameter input unit (19), is used for detecting temperature detecting element (17) of temperature in the maintenance room, is used for detecting humidity detecting element (18) of humidity in the maintenance room, the output of PLC controller (15) is connected with first drive unit (20), second drive unit (22) and numerical display unit (7), first drive unit (20) connect temperature regulation unit (21) that are used for adjusting the temperature between the maintenance, second drive unit (22) connect humidity control unit (14) that are used for adjusting humidity between the maintenance.
2. A portable concrete curing room as defined in claim 1, wherein: be provided with the maintenance pipe in the maintenance room, be provided with flow valve (23) on the maintenance pipe, the one end of maintenance pipe is connected with maintenance pump (24) of setting in the transition room, the other end of maintenance pipe is connected with a plurality of branch pipes, the branch pipe all is connected with shower head (12) of setting in test block maintenance frame (25) top.
3. A portable concrete curing room as defined in claim 2, wherein: and the maintenance pump (24) and the flow valve (23) are connected with the output end of the PLC (15).
4. A portable concrete curing room as defined in claim 2, wherein: and one end of the connecting pipe (13) is exposed out of the side box body (3) and is connected with the transition part, and the other end of the connecting pipe (13) is connected with the maintenance pump (24).
5. A portable concrete curing room as defined in claim 1, wherein: the cross section of the side box body (3) is rectangular, and the side box connecting plate comprises a first connecting plate (101) and a second connecting plate (102) which is arranged at a right angle with the first connecting plate (101).
6. A portable concrete curing room as defined in claim 1, wherein: at least one window (6) is arranged in the transition room.
7. A portable concrete curing room as defined in claim 1, wherein: the lifting hook (106) is provided with anti-skid particles.
8. A portable concrete curing room as defined in claim 1, wherein: the temperature adjusting unit (21) adopts special refrigeration house temperature control equipment.
9. A portable concrete curing room as defined in claim 1, wherein: the humidity adjusting unit (14) adopts an ultrasonic humidifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921022658.7U CN210389616U (en) | 2019-07-02 | 2019-07-02 | Movable concrete curing room |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921022658.7U CN210389616U (en) | 2019-07-02 | 2019-07-02 | Movable concrete curing room |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210389616U true CN210389616U (en) | 2020-04-24 |
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ID=70352277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921022658.7U Expired - Fee Related CN210389616U (en) | 2019-07-02 | 2019-07-02 | Movable concrete curing room |
Country Status (1)
| Country | Link |
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| CN (1) | CN210389616U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111958794A (en) * | 2020-07-17 | 2020-11-20 | 天津精诚建筑工程检测试验有限公司 | Test block constant temperature and humidity culture room |
-
2019
- 2019-07-02 CN CN201921022658.7U patent/CN210389616U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111958794A (en) * | 2020-07-17 | 2020-11-20 | 天津精诚建筑工程检测试验有限公司 | Test block constant temperature and humidity culture room |
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| CP01 | Change in the name or title of a patent holder |
Address after: 710003 Xi'an, Lianhu District, Shaanxi, North Street, No. 199 Patentee after: Shaanxi Construction Engineering Group Co.,Ltd. Address before: 710003 Xi'an, Lianhu District, Shaanxi, North Street, No. 199 Patentee before: SHAANXI CONSTRUCTION ENGINEERING GROUP Corp.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200424 |
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| CF01 | Termination of patent right due to non-payment of annual fee |