CN115191319A - Thing networking liquid manure integration water-saving irrigation device - Google Patents
Thing networking liquid manure integration water-saving irrigation device Download PDFInfo
- Publication number
- CN115191319A CN115191319A CN202110394915.5A CN202110394915A CN115191319A CN 115191319 A CN115191319 A CN 115191319A CN 202110394915 A CN202110394915 A CN 202110394915A CN 115191319 A CN115191319 A CN 115191319A
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- Prior art keywords
- water
- wall
- fixedly connected
- plate
- under casing
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- 238000003973 irrigation Methods 0.000 title claims abstract description 38
- 230000002262 irrigation Effects 0.000 title claims abstract description 38
- 239000007788 liquid Substances 0.000 title claims description 10
- 230000010354 integration Effects 0.000 title claims description 4
- 230000006855 networking Effects 0.000 title claims description 4
- 210000003608 fece Anatomy 0.000 title claims description 3
- 239000010871 livestock manure Substances 0.000 title claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 56
- 239000003337 fertilizer Substances 0.000 claims abstract description 16
- 230000035939 shock Effects 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 5
- 239000008233 hard water Substances 0.000 abstract description 9
- 239000008234 soft water Substances 0.000 abstract description 9
- 238000013016 damping Methods 0.000 description 3
- 239000003621 irrigation water Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000009331 sowing Methods 0.000 description 1
Images
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/02—Watering arrangements located above the soil which make use of perforated pipe-lines or pipe-lines with dispensing fittings, e.g. for drip irrigation
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C23/00—Distributing devices specially adapted for liquid manure or other fertilising liquid, including ammonia, e.g. transport tanks or sprinkling wagons
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/16—Control of watering
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Water Supply & Treatment (AREA)
- Environmental Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Soil Sciences (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Cultivation Receptacles Or Flower-Pots, Or Pots For Seedlings (AREA)
Abstract
The invention discloses an Internet of things water and fertilizer integrated water-saving irrigation device which comprises a bottom box, wherein water is arranged on the inner side of the bottom box, a water pump is arranged at the bottom end of the inner wall of a water tank, the inner side of the water pump is fixedly connected with one end of a connecting pipe, the other end of the connecting pipe is fixedly connected with one end of a three-way pipe, a control valve is arranged on the outer wall of the connecting pipe, the other end of the three-way pipe is fixedly connected with one end of an elastic pipeline, the other end of the elastic pipeline is fixedly connected with the inner side of a fixed cylinder, the bottom end of the fixed cylinder is fixedly connected with the top end of a supporting plate, and a hydraulic telescopic rod is arranged at the bottom end of the supporting plate. According to the invention, the flow velocity of the water body in the two connecting pipes is controlled through the two control valves, so that the content of soft water and hard water which circulate in the three-way pipe is controlled, the control of the soft water and the hard water in the irrigated water body is realized, and the irrigation quality is improved.
Description
Technical Field
The invention relates to the technical field of novel irrigation, in particular to a water and fertilizer integrated water-saving irrigation device based on the Internet of things.
Background
Irrigation, namely watering the land with water, wherein the irrigation principle is that the irrigation amount, the irrigation frequency and the irrigation time are determined according to the water requirement characteristics of medicinal plants, the growth stage, the climate and the soil condition, and the irrigation needs to be timely, proper and reasonable, and the types of the irrigation mainly comprise irrigation before sowing, seedling promotion irrigation, growth period irrigation, winter irrigation and the like.
There are also many types of irrigation equipment in the market, but most irrigation equipment can not control the proportion of soft water and hard water in the irrigation water to the kind of plant, and can not adjust the scope of irrigating, improves the efficiency of irrigating, for the convenience of control the proportion of soft water and hard water in the irrigation water, increases the quality of irrigating, adjusts the scope of irrigating simultaneously, guarantees the efficiency of irrigating, consequently needs to design an thing networking water and fertilizer integration water-saving irrigation equipment.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a water-fertilizer integrated water-saving irrigation device based on the Internet of things.
In order to achieve the purpose, the invention adopts the following technical scheme: the water-fertilizer integrated water-saving irrigation device based on the Internet of things comprises a bottom box, wherein water tanks are arranged on the inner side of the bottom box, the two water tanks are symmetrically distributed on the inner side of the bottom box, a water pump is arranged at the bottom end of the inner wall of each water tank, the inner side of the water pump is fixedly connected with one end of a connecting pipe, the other end of the connecting pipe is fixedly connected with one end of a three-way pipe, and a control valve is arranged on the outer wall of the connecting pipe;
the other end of the three-way pipe is fixedly connected with one end of an elastic pipeline, the other end of the elastic pipeline is fixedly connected with the inner side of a fixed cylinder, the bottom end of the fixed cylinder is fixedly connected with the top end of a supporting plate, the bottom end of the supporting plate is provided with hydraulic telescopic rods, the four hydraulic telescopic rods are uniformly distributed at the bottom end of the supporting plate, the outer wall of the fixed cylinder is connected with the inner wall of a sealing ring in a sliding mode, and the outer wall of the sealing ring is fixedly connected with the inner wall of a protective conical plate;
the inner wall lower extreme of protection taper plate is provided with the supporting ring board, the bottom of supporting ring board is provided with the shock attenuation telescopic link, and four shock attenuation telescopic link evenly distributed are in the bottom of supporting ring board, the bottom of shock attenuation telescopic link is in the same place with the top fixed connection of locating plate, the bottom of locating plate is in the same place with the top surface fixed connection of under casing.
As a further description of the above technical solution:
the spray head fixing device is characterized in that the top end of the fixing cylinder is fixedly connected with the bottom end of the supporting tube, the top end of the supporting tube is fixedly connected with the bottom end of the fixing plate, spray heads are arranged on the inner side of the fixing plate, and the four spray heads are symmetrically distributed on the inner side of the fixing plate.
As a further description of the above technical solution:
the top surface of the bottom box is externally provided with a limit ring plate, the side surface of the limit ring plate is movably connected with the bottom end of the inner wall of the protection conical plate, the top surface of the bottom box is provided with water inlet pipes, and the two water inlet pipes are uniformly distributed on the top surface of the bottom box.
As a further description of the above technical solution:
the top surface of under casing is provided with solid fixed ring, and two solid fixed ring symmetric distributions are at the top surface of under casing, gu fixed ring's inner wall is in the same place with the outer wall fixed connection of connecting pipe.
As a further description of the above technical solution:
the bottom end of the outer wall of the elastic pipeline is fixedly connected with the inner wall of the positioning ring, and the outer wall of the positioning ring is fixedly connected with the inner wall of the locking plate.
As a further description of the above technical solution:
the side of the bottom box is provided with liquid level windows, and the two liquid level windows are symmetrically distributed on the outer side of the bottom box.
As a further description of the above technical solution:
the bottom of under casing is provided with the support, and four supports evenly distributed are in the bottom of under casing.
The invention has the following beneficial effects:
1. according to the invention, the connecting pipes in the two water tanks are connected together through the three-way pipe, the control valves are arranged on the outer walls of the connecting pipes, and the flow velocity of the water bodies in the two connecting pipes is controlled by using the two control valves, so that the contents of soft water and hard water which circulate in the three-way pipe are controlled, the control of the soft water and the hard water in the irrigated water body is realized, and the irrigation quality is improved.
2. According to the invention, the hydraulic telescopic rod is arranged at the lower end of the outer wall of the fixed cylinder, the elastic pipeline is arranged at the bottom end of the fixed cylinder, the fixed cylinder is driven to lift by the hydraulic telescopic rod, the elastic pipeline is matched to deform while the fixed cylinder lifts, the irrigation height is adjusted, and the control of the irrigation area is realized.
3. According to the invention, the supporting ring plate is arranged on the inner wall of the protective conical plate, the damping telescopic rods are arranged at the bottom ends of the supporting ring plate, and the four damping telescopic rods are used as an integral structure for damping, so that the use stability is increased.
4. According to the invention, the limiting ring plate is arranged on the top surface of the bottom box, the side surface of the limiting ring plate is movably connected with the inner wall of the protective cone plate, and the limiting ring plate can effectively prevent a body from entering the interior of the protective cone to cause rusting of the internal structure.
Drawings
FIG. 1 is a perspective view of an Internet of things water and fertilizer integrated water-saving irrigation device provided by the invention;
FIG. 2 is a front view of an Internet of things water and fertilizer integrated water-saving irrigation device provided by the invention;
FIG. 3 is a front cross-sectional view of the Internet of things water and fertilizer integrated water-saving irrigation device provided by the invention;
fig. 4 is a side view of the internet of things water and fertilizer integrated water-saving irrigation device.
Illustration of the drawings:
1. a bottom case; 2. a water pump; 3. a water tank; 4. a water inlet pipe; 5. a limit ring plate; 6. positioning a plate; 7. a shock-absorbing telescopic rod; 8. a control valve; 9. a three-way pipe; 10. a hydraulic telescopic rod; 11. a support plate; 12. a seal ring; 13. a fixed cylinder; 14. a fixing plate; 15. supporting a tube; 16. a spray head; 17. a protective conical plate; 18. a support ring plate; 19. an elastic conduit; 20. a locking plate; 21. a fixing ring; 22. a connecting pipe; 23. a support; 24. and (4) a liquid level window.
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.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-4, one embodiment provided by the present invention: the water-fertilizer integrated water-saving irrigation device of the Internet of things comprises a bottom box 1, wherein water tanks 3 are arranged on the inner side of the bottom box 1, the two water tanks 3 are symmetrically distributed on the inner side of the bottom box 1, a water pump 2 is arranged at the bottom end of the inner wall of each water tank 3, the inner side of each water pump 2 is fixedly connected with one end of a connecting pipe 22, the other end of each connecting pipe 22 is fixedly connected with one end of a three-way pipe 9, and a control valve 8 is arranged on the outer wall of each connecting pipe 22, so that the mixing ratio of soft water and hard water can be conveniently monitored, and an irrigated water body can be more suitable for plants;
the other end of the three-way pipe 9 is fixedly connected with one end of an elastic pipeline 19, the other end of the elastic pipeline 19 is fixedly connected with the inner side of a fixed cylinder 13, the bottom end of the fixed cylinder 13 is fixedly connected with the top end of a supporting plate 11, a hydraulic telescopic rod 10 is arranged at the bottom end of the supporting plate 11, the four hydraulic telescopic rods 10 are uniformly distributed at the bottom end of the supporting plate 11, the outer wall of the fixed cylinder 13 is connected with the inner wall of a sealing ring 12 in a sliding mode, the outer wall of the sealing ring 12 is fixedly connected with the inner wall of a protective conical plate 17, and the hydraulic telescopic rod 10 is used for driving the supporting plate 11 to lift, so that the height of the fixed cylinder 13 is adjusted, and the irrigation area is controlled;
the inner wall lower extreme of protection taper plate 17 is provided with supporting ring board 18, and the bottom of supporting ring board 18 is provided with shock attenuation telescopic link 7, and four shock attenuation telescopic link 7 evenly distributed are in the bottom of supporting ring board 18, and the bottom of shock attenuation telescopic link 7 is in the same place with the top fixed connection of locating plate 6, and the bottom of locating plate 6 is in the same place with the top surface fixed connection of under casing 1, utilizes four shock attenuation telescopic links 7 to increase the stability when solid fixed cylinder 13 goes up and down.
The top of a fixed cylinder 13 is in the same place with the bottom fixed connection of support tube 15, the top of support tube 15 is in the same place with the bottom fixed connection of fixed plate 14, the inboard of fixed plate 14 is provided with shower nozzle 16, and four shower nozzle 16 symmetric distributions are in the inboard of fixed plate 14, irrigate the plant water spray, the efficiency is improved, be provided with spacing crown plate 5 outside the top surface of under casing 1, the side of spacing crown plate 5 is in the same place with the inner wall bottom swing joint of protection cone plate 17, protect the inner structure, the top surface of under casing 1 is provided with inlet tube 4, and two inlet tube 4 evenly distributed are at the top surface of under casing 1, be convenient for add the water to the inner wall of water tank 3, the top surface of under casing 1 is provided with solid fixed ring 21, and two solid fixed ring 21 symmetric distributions are at the top surface of under casing 1, the inner wall fixed connection of solid fixed ring 21 is in the same place with the outer wall fixed connection of connecting pipe 22, be used for fixed connecting pipe 22, stability is increased, the outer wall bottom of elastic pipeline 19 is in the fixed connection with the inner wall of holding ring, increase the stability of elastic pipeline 19 when deformation takes place, the side of under casing 1 is provided with liquid window 24, and two liquid level window 24 are in the bottom of the symmetrical distribution of under casing 1, the bottom of supporting bracket 23 that is provided with the even bottom of under casing 1, be convenient for observing the even bottom of under casing 1, it is provided with the even bottom of under casing 23 of supporting at the bottom of supporting of under casing 1, it is convenient for observing.
The working principle is as follows: firstly, soft water and hard water are respectively added into two water tanks 3 through a water inlet pipe 4, and a water body in the water tank 3 is led out through a connecting pipe 22 by using a water pump 2; secondly, the flow velocity of the water body in the two connecting pipes 22 is controlled by using the control valve 8, so that the proportion matching of hard water and soft water in the water body is realized; then, the hydraulic telescopic rod 10 is used for driving the supporting plate 11 to lift so as to control the height of the fixed cylinder 13, and the elastic pipeline 19 deforms along with the supporting plate 11 when the supporting plate 11 lifts so as to ensure the conductivity between the connecting pipe 22 and the fixed cylinder 13; finally, the mixed water is sprayed out by four spray heads 16 in the fixed plate 14, and the plants are sprayed and irrigated.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides a thing networking liquid manure integration water-saving irrigation device, includes under casing (1), its characterized in that: the water tanks (3) are arranged on the inner side of the bottom box (1), the two water tanks (3) are symmetrically distributed on the inner side of the bottom box (1), a water pump (2) is arranged at the bottom end of the inner wall of each water tank (3), the inner side of each water pump (2) is fixedly connected with one end of a connecting pipe (22), the other end of each connecting pipe (22) is fixedly connected with one end of a three-way pipe (9), and a control valve (8) is arranged on the outer wall of each connecting pipe (22);
the other end of the three-way pipe (9) is fixedly connected with one end of an elastic pipeline (19), the other end of the elastic pipeline (19) is fixedly connected with the inner side of a fixed cylinder (13), the bottom end of the fixed cylinder (13) is fixedly connected with the top end of a supporting plate (11), a hydraulic telescopic rod (10) is arranged at the bottom end of the supporting plate (11), the four hydraulic telescopic rods (10) are uniformly distributed at the bottom end of the supporting plate (11), the outer wall of the fixed cylinder (13) is connected with the inner wall of a sealing ring (12) in a sliding mode, and the outer wall of the sealing ring (12) is fixedly connected with the inner wall of a protective conical plate (17);
the inner wall lower extreme of protection taper plate (17) is provided with supporting ring board (18), the bottom of supporting ring board (18) is provided with shock attenuation telescopic link (7), and four shock attenuation telescopic link (7) evenly distributed are in the bottom of supporting ring board (18), the bottom of shock attenuation telescopic link (7) is in the same place with the top fixed connection of locating plate (6), the bottom of locating plate (6) is in the same place with the top surface fixed connection of under casing (1).
2. The Internet of things water and fertilizer integrated water-saving irrigation device as claimed in claim 1, characterized in that: the top end of the fixed cylinder (13) is fixedly connected with the bottom end of the supporting tube (15), the top end of the supporting tube (15) is fixedly connected with the bottom end of the fixed plate (14), the inner side of the fixed plate (14) is provided with the spray heads (16), and the four spray heads (16) are symmetrically distributed on the inner side of the fixed plate (14).
3. The Internet of things water and fertilizer integrated water-saving irrigation device according to claim 1, characterized in that: the top surface of under casing (1) is provided with stop ring board (5) outward, the side of stop ring board (5) is in the same place with the inner wall bottom swing joint of protection awl board (17), the top surface of under casing (1) is provided with inlet tube (4), and two inlet tube (4) evenly distributed are at the top surface of under casing (1).
4. The Internet of things water and fertilizer integrated water-saving irrigation device according to claim 1, characterized in that: the top surface of under casing (1) is provided with solid fixed ring (21), and two solid fixed ring (21) symmetric distribution are at the top surface of under casing (1), the inner wall of solid fixed ring (21) is in the same place with the outer wall fixed connection of connecting pipe (22).
5. The Internet of things water and fertilizer integrated water-saving irrigation device as claimed in claim 1, characterized in that: the bottom end of the outer wall of the elastic pipeline (19) is fixedly connected with the inner wall of the positioning ring, and the outer wall of the positioning ring is fixedly connected with the inner wall of the locking plate (20).
6. The Internet of things water and fertilizer integrated water-saving irrigation device as claimed in claim 1, characterized in that: the side of the bottom box (1) is provided with liquid level windows (24), and the two liquid level windows (24) are symmetrically distributed on the outer side of the bottom box (1).
7. The Internet of things water and fertilizer integrated water-saving irrigation device according to claim 1, characterized in that: the bottom of under casing (1) is provided with support (23), and four support (23) evenly distributed are in the bottom of under casing (1).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110394915.5A CN115191319B (en) | 2021-04-13 | 2021-04-13 | Water-saving irrigation device integrating water and fertilizer through Internet of things |
| PCT/CN2021/103523 WO2022217756A1 (en) | 2021-04-13 | 2021-06-30 | Water and fertilizer integrated water-saving irrigation device based on internet of things |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110394915.5A CN115191319B (en) | 2021-04-13 | 2021-04-13 | Water-saving irrigation device integrating water and fertilizer through Internet of things |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115191319A true CN115191319A (en) | 2022-10-18 |
| CN115191319B CN115191319B (en) | 2024-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110394915.5A Active CN115191319B (en) | 2021-04-13 | 2021-04-13 | Water-saving irrigation device integrating water and fertilizer through Internet of things |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115191319B (en) |
| WO (1) | WO2022217756A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115956491B (en) * | 2023-03-16 | 2023-05-05 | 安徽农业大学 | Assembled water-saving irrigation device for hydraulic engineering and irrigation method thereof |
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| CN210352172U (en) * | 2019-07-22 | 2020-04-21 | 中国热带农业科学院热带作物品种资源研究所 | Portable rich water sprinkler |
| CN212034829U (en) * | 2020-03-31 | 2020-12-01 | 云南泽生生物科技有限公司 | Novel integrative equipment of erigeron breviscapus liquid manure |
| CN214902748U (en) * | 2021-04-13 | 2021-11-30 | 海南宝秀节水科技股份有限公司 | Thing networking liquid manure integration water-saving irrigation device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022217756A1 (en) | 2022-10-20 |
| CN115191319B (en) | 2024-10-15 |
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