CN109386021B - Rainwater collecting device - Google Patents
Rainwater collecting device Download PDFInfo
- Publication number
- CN109386021B CN109386021B CN201811464640.2A CN201811464640A CN109386021B CN 109386021 B CN109386021 B CN 109386021B CN 201811464640 A CN201811464640 A CN 201811464640A CN 109386021 B CN109386021 B CN 109386021B
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- CN
- China
- Prior art keywords
- well body
- filter screen
- disc
- pin
- rotate
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Classifications
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/02—Methods or installations for obtaining or collecting drinking water or tap water from rain-water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/01—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons
- B01D33/03—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements
- B01D33/0346—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements with flat filtering elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/44—Regenerating the filter material in the filter
- B01D33/46—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element
- B01D33/461—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element brushes
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/06—Gully gratings
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
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- 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
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/108—Rainwater harvesting
Abstract
A rainwater collecting device well solves the problem of initial sewage interception and flow abandoning in the rainwater collecting process and is convenient to operate; the technical scheme includes that the device comprises a well body, a rotating shaft is arranged on the well body, a filter screen is arranged in the well body, a cam is arranged on the rotating shaft, a rotating disc is arranged on the rear side wall of the well body, a first water discharge port and a second water discharge port are arranged on the rear side wall of the well body, an arc-shaped groove and a through hole are formed in the end face of the rotating disc, and the first water discharge port and the second water discharge port cannot be communicated with the inside of the well body; the front end of the rotary table is connected with a driving disc, a supporting rod is arranged on the outer edge of the driving disc, the lower end of the filter screen is connected with a vertical rod, a pawl is arranged at the lower end of the vertical rod, the filter screen moves downwards and can push the supporting rod to drive the rotary table to rotate through the pawl, the filter screen moves upwards and the pawl cannot drive the driving disc to rotate, the arc-shaped groove and the first water discharge port are always in a communicated state in the rotating process of the rotary table, and when the rotary table rotates until the through hole is communicated; the invention has novel conception.
Description
Technical Field
The invention relates to the technical field of rainwater collection, in particular to a rainwater collection device.
Background
Water resources in China are very deficient and are listed as one of 13 water-poor countries by united nations. Along with the rapid development of urbanization, the shortage of urban water resources is increased, and the water-tight areas of a large number of earth surfaces, roads, houses and the like are increased, so that the rainfall infiltration amount of cities is greatly reduced, and the urban storm runoff is easy to generate flood disasters such as water accumulation, waterlogging and the like. The recycling of urban rainwater is a new open source throttling comprehensive technology, not only can relieve the pressure of water shortage, but also can share the drainage pressure of a rainwater pipe during rainstorm, and reduce the occurrence of ponding, waterlogging and the like. However, the rainwater contains a large amount of pollutants, and particularly the initial rainwater has poor water quality and cannot meet the use requirements of people. Therefore, in the rainwater treatment process, the initial rainwater discarding is a very effective water quality control technology, and most pollutants in runoff, including fine or soluble pollutants, can be reasonably designed and controlled.
In addition, in the rainwater collection process, the initial rainwater contains a large amount of sundries, so that the blockage of a drainage port is easily caused, the problem of overflow of a well body is caused, the rainwater collection efficiency is seriously influenced due to the fact that the rainwater is very inconvenient to clean in rainy days.
Therefore, it is necessary to design a device which can effectively prevent blockage and can automatically perform the discarding and intercepting of sewage.
Disclosure of Invention
In view of the above situation, in order to overcome the defects of the prior art, the invention provides a rainwater collecting device, which well solves the problem of initial sewage interception and flow abandonment in the rainwater collecting process and is convenient to operate.
The technical scheme includes that the well comprises a well body, rotatable rotating shafts are arranged on the front side wall and the rear side wall of the well body, filter screens arranged below the rotating shafts are arranged in the well body, cams are arranged on the outer edges of the front end and the rear end of each rotating shaft respectively, the outer edge surfaces of the cams are in contact with the filter screens, the rotating shafts can drive the filter screens to move up and down through the cams, a rotatable turntable arranged below the filter screens is arranged on the rear side wall of the well body, a first drainage port and a second drainage port which are positioned on the same horizontal plane are arranged on the rear side wall of the well body, an arc-shaped groove and a through hole are formed in the end face of the turntable, the included angle between the center of the arc-shaped groove and the center of the through hole is 135 degrees, the central angle of the arc-shaped groove is 90 degrees, the first drainage port can be communicated with;
the front end of carousel be connected with the driving-disc, be equipped with the branch of a plurality of circumference equipartitions in the outer fringe of driving-disc, the lower extreme of filter screen is connected with the montant, the lower extreme of montant is equipped with the pawl, the pawl can contact with branch, the filter screen downstream can promote branch drive carousel through the pawl and rotate, the filter screen rebound pawl can not drive the driving-disc and rotate, the carousel rotates the in-process, the arc wall is in the intercommunication state with first drain outlet always, when the carousel rotates to through-hole and second drain outlet intercommunication, pivot stall.
The rainwater collecting device is novel in concept and ingenious in structure, well solves the problem of initial sewage interception and flow abandoning in the rainwater collecting process, is convenient to operate, and can effectively improve the use requirement.
Drawings
Fig. 1 is a front view of a drive plate of the present invention.
Fig. 2 is a schematic front view of the turntable of the present invention when the first water discharge port is communicated with the arc-shaped groove.
Fig. 3 is a side view of the present invention.
FIG. 4 is a top view of the present invention.
Fig. 5 is a partial enlarged view of fig. 3 according to the present invention.
FIG. 6 is an enlarged view of a portion of FIG. 1 according to the present invention.
FIG. 7 is a top plan view of the pawl portion of the present invention.
FIG. 8 is a schematic view of a turntable according to the present invention.
FIG. 9 is a schematic view of the turntable rotating to the through hole and the second water outlet.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
As shown in the figures 1-9, the invention comprises a well body 1, a rotatable rotating shaft 2 is arranged on the front and rear side walls of the well body 1, a filter screen 3 arranged below the rotating shaft 2 is arranged in the well body 1, cams 4 are respectively arranged on the outer edges of the front and rear ends of the rotating shaft 2, the outer edge surface of each cam 4 is contacted with the filter screen 3, the rotating shaft 2 can drive the filter screen 3 to move up and down through the cam 4, a rotatable turntable 5 arranged below the filter screen 3 is arranged on the rear side wall of the well body 1, a first water discharge opening 6 and a second water discharge opening 7 which are arranged on the same horizontal plane are arranged on the rear side wall of the well body 1, an arc-shaped groove 12 and a through hole 13 are arranged on the end surface of the turntable 5, the included angle between the center of the arc-shaped groove 12 and the center of the through hole 13 is 135 degrees, the center angle of the arc-shaped groove 12 is 90 degrees, the, the first water outlet 6 and the second water outlet 7 can not be communicated with the inside of the well body 1 at the same time;
In order to facilitate the circulation work, a pin shaft 14 is arranged at the center of the rear side of the driving disc 8, the pin shaft 14 penetrates through the rotary disc 5 and is installed on the rear side wall of the well body 1, a torsion spring 15 sleeved on the pin shaft 14 is connected between the rotary disc 5 and the rear side wall of the well body 1, bayonet 16 is arranged on the outer edge surface of the pin shaft 14 matched with the rotary disc 5, four pin holes 17 uniformly distributed on the circumference are formed in the inner wall of the rotary disc 5 matched with the pin shaft 14, the bayonet 16 can be clamped into the pin holes 17, the driving disc 8 can drive the rotary disc 5 to rotate through the bayonet 16, when the torsion spring 15 is screwed for more than 90 degrees, the bayonet 16 can be separated from the corresponding pin holes 17 under the action of the torsion spring 15, and the rotary disc 5 can reversely rotate under.
In order to clean up the silt in the rainwater conveniently, the bottom of well body 1 be equipped with bell mouth 18, the lower extreme of bell mouth 18 is connected with row's silt pipe 19.
In order to clean impurities on the filter screen 3, a push plate 20 capable of moving left and right is arranged on the left side wall of the well body 1, a pressure spring 21 is connected between the push plate 20 and the well body 1, the push plate 20 is positioned on the left side of the well body 1 when the pressure spring 21 is in the original length, an electromagnet 22 is arranged on the well body 1, the electromagnet 22 is controlled by an electrical system, and the electromagnet 22 is electrified to push the push plate 20 to move right so that the pressure spring 21 is stretched; the right side wall of the well body 1 is provided with a cleaning opening 23 corresponding to the push plate 20.
In order to realize the up-and-down movement of the filter screen 3, a spring 24 is connected between the lower end of the filter screen 3 and the side wall of the well body 1, and the filter screen 3 can move upwards under the action of the spring 24.
In order to realize the rotation of the rotating shaft 2, one end of the rotating shaft 2 is connected with a stepping motor.
In order to avoid the interference of the driving disc 8 to the flow of rainwater, the end surface of the driving disc 8 is of a filter plate structure.
When the invention is used specifically, a control system of the stepping motor and a control system of the electromagnet 22 are arranged indoors, and the rotating shaft 2 is inserted on the front side wall and the rear side wall of the well body 1; in an initial state, the arc-shaped groove 12 and the first drainage port 6 are in a communicated state, the through hole 13 is not communicated with the second drainage port 7, when rainwater needs to be collected in rainy days, an operator firstly controls the starting of the stepping motor indoors at the moment, the stepping motor can rotate for the same number of turns once when being started, the rotation of the stepping motor drives the rotating shaft 2 to rotate, the rotating shaft 2 can push the filter screen 3 to move downwards through the cam 4 in a rotating manner, the filter screen 3 can move upwards under the action of the spring 24, the vertical vibration action of the filter screen 3 is further realized, impurities can be effectively filtered through the vertical vibration of the filter screen 3 at the moment, and meanwhile, the blockage of the filter screen 3 caused by the blockage of the impurities can be avoided; at the moment, filtered rainwater can be discharged from the first water discharge port 6 through the arc-shaped groove 12, and the first water discharge port 6 is connected to a municipal pipeline; because the vertical rod 10 is arranged below the filter screen 3, the pawl 11 is arranged on the vertical rod 10, the filter screen 3 can drive the driving disc 8 to rotate through the pawl 11 when moving downwards, the driving disc 8 can only drive the driving disc 8 to rotate a certain angle when moving downwards once, at the moment, the driving disc 8 rotates intermittently along with the filter screen 3, in the rotating process of the driving disc 8, the driving disc 8 can drive the rotating disc 5 to rotate through the matching of the clamping pin 16 and the pin hole 17, in the rotating process of the rotating disc 5, the arc-shaped groove 12 is always in a communicating state with the first water drainage opening 6, at the moment, the water drainage operation can be continuously carried out, when the rotating disc 5 rotates until the through hole 13 is communicated with the second water drainage opening 7, at the moment, the arc-shaped groove 12 is staggered with the first water drainage opening 6, the rainwater in the well body 1 is drained from the second water drainage opening 7 through, at this time, the stepping motor stops rotating, the rotating disc 5 is kept in a state that the through hole 13 is communicated with the drain hole, and rainwater can be collected according to the duration of rainy days.
Meanwhile, in the rainwater collecting process, an operator can control the electrification of the electromagnet 22 through the electric control system, and the electromagnet 22 can push the push plate 20 to move towards the right side to clean the impurities on the upper end face of the filter screen 3 when the electromagnet is electrified, so that the impurities are pushed towards the right side to enter the cleaning opening 23; the electromagnet 22 is triggered once, so that the push plate 20 can move for multiple times, the cleaning is realized for multiple times, and a working cycle is completed at the moment.
When the stepping motor is started again, the stepping motor rotates to continuously drive the driving disc 8 to rotate through the pawl 11 below the filter screen 3, the driving disc 8 continuously drives the rotating disc 5 to rotate through the clamping pins 16, and because the torsion spring 15 is connected between the rotating disc 5 and the side wall of the well body 1, when the torsion force of the torsion spring 15 is large, the clamping pins 16 can be separated from the corresponding pin holes 17 under the action of the torsion spring 15, and the rotating disc 5 can reversely rotate under the action of the torsion spring 15 until the clamping pins 16 are clamped into the other pin hole 17; because the inner hole of the turntable 5 matched with the pin shaft 14 is provided with four pin holes 17 which are uniformly distributed on the circumference, the angle between two adjacent pin holes 17 is 90 degrees, the turntable can be well rotated once when the turntable 5 rotates more than 90 degrees, and the circular operation can be well performed.
In addition, the bottom of the well body 1 is provided with the tapered hole 18, so that sediment passing through the filter screen 3 can be well precipitated and collected, and the sediment can be regularly cleaned through the sediment discharge pipe 19.
The cross section of the well body 1 in the invention can be square or round, and when the well body 1 is round, the front, back, left and right written in the invention are all the directions based on the front view.
According to the invention, through designing the structure of the filter screen 3 capable of vibrating downwards, impurities in rainwater are prevented from attaching to the surface of the filter screen 3 to influence the discharge effect, and meanwhile, the two first water outlets 6, the arc-shaped groove 12, the second water outlets 7 and the through holes 13 which are not communicated at the same time are designed, so that the discharge of initial rainwater and the collection of rainwater in the middle and later periods are effectively separated, and the sewage interception and flow discarding effect is realized.
The device can be controlled indoors in rainy days by designing a stepping motor control system and an electromagnet 22 control system which are arranged indoors, impurities and silt can be well and respectively cleaned by designing the push plate 20, the cleaning port 23 and the silt discharging pipe 19, and municipal pressure caused by blind discharge is avoided.
The rainwater collecting device is novel in concept and ingenious in structure, well solves the problem of initial sewage interception and flow abandoning in the rainwater collecting process, is convenient to operate, and can effectively improve the use requirement.
Claims (7)
1. The utility model provides a rainwater collection device, including the well body (1), a serial communication port, the well body (1) around on be equipped with rotatable pivot (2) on the lateral wall, be equipped with filter screen (3) of arranging pivot (2) below in the well body (1), be equipped with cam (4) respectively on the outer fringe at both ends around on pivot (2), the outer fringe face and the filter screen (3) contact of cam (4), the rotation accessible cam (4) of pivot (2) drive filter screen (3) and reciprocate, be equipped with on the back lateral wall of well body (1) and arrange filter screen (3) below and rotatable carousel (5), be equipped with first outlet (6) and second outlet (7) on the same horizontal plane on the back lateral wall of well body (1), arc wall (12) and through-hole (13) have been seted up on the terminal surface of carousel (5), the contained angle between the center of arc wall (12) and through-hole (13) center is 135 degrees, the central angle of the arc-shaped groove (12) is 90 degrees, the first water discharge port (6) can be communicated with the inside of the well body (1) through the arc-shaped groove (12), the second water discharge port (7) can be communicated with the inside of the well body (1) through the through hole (13), and the first water discharge port (6) and the second water discharge port (7) cannot be simultaneously communicated with the inside of the well body (1);
the front end of carousel (5) be connected with driving-disc (8), be equipped with branch (9) of a plurality of circumference equipartitions in the outer fringe of driving-disc (8), the lower extreme of filter screen (3) is connected with montant (10), the lower extreme of montant (10) is equipped with pawl (11), pawl (11) can contact with branch (9), filter screen (3) downstream can promote branch (9) through pawl (11) and drive carousel (5) and rotate, filter screen (3) rebound pawl (11) can not drive driving-disc (8) and rotate, carousel (5) rotate the in-process, arc wall (12) and first drain outlet (6) are in the connected state always, when carousel (5) rotate to through-hole (13) and second drain outlet (7) intercommunication, pivot (2) stall.
2. The rainwater collecting device according to claim 1, wherein a pin (14) is arranged at the central part of the rear side of the driving disc (8), the pin (14) penetrates through the rotary disc (5) and is installed on the rear side wall of the well body (1), a torsion spring (15) sleeved on the pin (14) is connected between the rotary disc (5) and the rear side wall of the well body (1), a bayonet lock (16) is arranged on the outer edge surface of the pin (14) matched with the rotary disc (5), four pin holes (17) uniformly distributed on the circumference are arranged on the inner wall of the rotary disc (5) matched with the pin (14), the bayonet lock (16) can be clamped into the pin hole (17), the driving disc (8) can drive the rotary disc (5) to rotate through the bayonet lock (16), when the torsion spring (15) is screwed for more than 90 degrees, the bayonet lock (16) can be separated from the corresponding pin hole (17) under the action of the torsion spring (15), and the rotary disc (5) can reversely rotate under the action of the, until the clamping pin (16) is clamped into the other pin hole (17).
3. A rainwater collecting device according to claim 1 characterised in that the bottom of said well body (1) is provided with a tapered bore (18), and the lower end of said tapered bore (18) is connected to a silt removing pipe (19).
4. A rainwater collecting device according to claim 1, characterized in that a push plate (20) capable of moving left and right is arranged on the left side wall of the well body (1), a pressure spring (21) is connected between the push plate (20) and the well body (1), the push plate (20) is positioned on the left side of the well body (1) when the pressure spring (21) is in the original length, an electromagnet (22) is arranged on the well body (1), the electromagnet (22) is controlled by an electrical system, and the electromagnet (22) is electrified to push the push plate (20) to move right, so that the pressure spring (21) is stretched; a cleaning opening (23) corresponding to the push plate (20) is arranged on the right side wall of the well body (1).
5. A rainwater collecting device according to claim 1, characterized in that a spring (24) is connected between the lower end of said screen (3) and the side wall of said well (1), and said screen (3) can be moved upwards by said spring (24).
6. A rainwater collecting device according to claim 1, characterized in that a stepping motor is connected to one end of said rotary shaft (2).
7. A rainwater collecting device according to claim 1 characterised in that the end faces of said drive discs (8) are of strainer construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811464640.2A CN109386021B (en) | 2018-12-03 | 2018-12-03 | Rainwater collecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811464640.2A CN109386021B (en) | 2018-12-03 | 2018-12-03 | Rainwater collecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109386021A CN109386021A (en) | 2019-02-26 |
| CN109386021B true CN109386021B (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811464640.2A Active CN109386021B (en) | 2018-12-03 | 2018-12-03 | Rainwater collecting device |
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| Country | Link |
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| CN (1) | CN109386021B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110512710B (en) * | 2019-09-04 | 2021-07-16 | 长沙凯泽工程设计有限公司 | Sewage pipe processing device |
| CN110644601B (en) * | 2019-10-11 | 2020-12-01 | 日照凯润城市建设管理集团有限公司 | Emergency flood control drainage well lid |
| CN110747984A (en) * | 2019-11-16 | 2020-02-04 | 华北水利水电大学 | Be applied to automatic clearance impurity water conservancy pipeline of dykes and dams |
| CN110747981B (en) * | 2019-11-26 | 2021-03-05 | 沈阳农业大学 | Can prevent forest that impurity falls into precipitation collection device for hydrology |
| CN111495007B (en) * | 2020-04-08 | 2021-10-29 | 东至森溢生物能源科技有限公司 | Sewage treatment removes different anti-return water conservancy diversion discharge mechanism |
| CN111735163A (en) * | 2020-06-24 | 2020-10-02 | 浙江穗丰机电科技有限公司 | Air conditioner cooling system for storage |
| CN112832367A (en) * | 2021-01-05 | 2021-05-25 | 劳远明 | Low-energy-consumption green building |
| CN114635390B (en) * | 2022-04-07 | 2024-01-30 | 山东临沂水利工程总公司 | Novel hydraulic engineering construction is with waterproof drainage device |
| CN117619008B (en) * | 2024-01-26 | 2024-04-23 | 西安康诺化工有限公司 | Chemical product filter and filtering method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001152540A (en) * | 1999-11-29 | 2001-06-05 | Akiyoshi Senota | Tank and facilities for removing foreign matter |
| CN201454234U (en) * | 2009-08-05 | 2010-05-12 | 商城县开源环保设备有限公司 | Rotating net type cleaner |
| CN106284605A (en) * | 2016-10-13 | 2017-01-04 | 无锡市诺智能科技有限公司 | A kind of vibration-type tilts filter screen sewer cover plate |
| CN107268735A (en) * | 2017-06-28 | 2017-10-20 | 李爱勤 | A kind of anti-clogging screen pack plug and its anti-blocking method |
| CN207176805U (en) * | 2017-08-15 | 2018-04-03 | 安徽柏桦电力科技有限公司 | A kind of electronic flow abandoning apparatus utilized for rainwater recycle |
| CN207538181U (en) * | 2017-10-19 | 2018-06-26 | 深圳市东深工程有限公司 | Rain sewage diversion device |
-
2018
- 2018-12-03 CN CN201811464640.2A patent/CN109386021B/en active Active
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| CN109386021A (en) | 2019-02-26 |
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Effective date of registration: 20200519 Address after: 211214 Kechuang building, Futian Road, Zhetang street, Lishui Economic Development Zone, Nanjing City, Jiangsu Province Applicant after: Nanjing Lishui hi tech Venture Capital Management Co., Ltd Address before: 476000 Henan Province Shangqiu City Yucheng County Chengguan Town People's Road 182 South Section Attached No. 1 Applicant before: Pei Zicheng |
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Effective date of registration: 20210208 Address after: Honglan Town, Lishui District, Nanjing City, Jiangsu Province Patentee after: Nanjing Linhua magnetic materials Co.,Ltd. Address before: 211214 Kechuang building, Futian Road, Zhetang street, Lishui Economic Development Zone, Nanjing City, Jiangsu Province Patentee before: Nanjing Lishui hi tech Venture Capital Management Co.,Ltd. |
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