CA1215887A - Craft for spreading pulverulent treatment agents over lakes - Google Patents
Craft for spreading pulverulent treatment agents over lakesInfo
- Publication number
- CA1215887A CA1215887A CA000451070A CA451070A CA1215887A CA 1215887 A CA1215887 A CA 1215887A CA 000451070 A CA000451070 A CA 000451070A CA 451070 A CA451070 A CA 451070A CA 1215887 A CA1215887 A CA 1215887A
- Authority
- CA
- Canada
- Prior art keywords
- craft
- storage space
- treatment agent
- lake
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/28—Barges or lighters
- B63B35/30—Barges or lighters self-discharging
- B63B35/305—Barges or lighters self-discharging discharging by mechanical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Transportation (AREA)
- Treatment Of Sludge (AREA)
- Catching Or Destruction (AREA)
- Cleaning Or Clearing Of The Surface Of Open Water (AREA)
Abstract
ABSTRACT
A craft for spreading pulverulent treatment agents over lakes includes a propulsion source for moving the craft to desired sections of the lake and at least one device for spraying a slurry of the treatment agent and water over the surface of the lake. The craft further comprises a storage space(5) in the hull of the craft for receiving and storing said treatment agent in dry form and, as spraying device, an ejector(3) which upon spraying mixes water taken from the lake with dry treatment agent from the storage space(5), the water serving as driving medium and the treatment agent as secondary medium, said ejector communicating via a conduit with a pump adapted to communicate with the outbord side of the craft for taking up the water from the lake, and further communi-cating with said storage space via a conveyor conduit.
(FIGURE 1).
A craft for spreading pulverulent treatment agents over lakes includes a propulsion source for moving the craft to desired sections of the lake and at least one device for spraying a slurry of the treatment agent and water over the surface of the lake. The craft further comprises a storage space(5) in the hull of the craft for receiving and storing said treatment agent in dry form and, as spraying device, an ejector(3) which upon spraying mixes water taken from the lake with dry treatment agent from the storage space(5), the water serving as driving medium and the treatment agent as secondary medium, said ejector communicating via a conduit with a pump adapted to communicate with the outbord side of the craft for taking up the water from the lake, and further communi-cating with said storage space via a conveyor conduit.
(FIGURE 1).
Description
Background of the invention . .
The present invention relates to a craft for spreading pulverulent -treatment agents, especially lime, over lake, said craft comprising a propulsion source for moving the craft to desired sections of the lake, and at least one device for spraying a slurry of the treatment agent and water over the surface of the lake.
Brief description o the invention The present invention has for an object to provide lo a craft for quick and convenient spreading of pullover lent lime or other treatment agents for restoring lake water as will as to carry out the actual spreading of the lime in a neat and clean way 9 whilst aiding to establish an attractive job environment for the operator spreading the lime.
In accordance with the above object, one embodiment of the present invention provides an improvement in a craft for spreading pulverulent treatment agents over lakes, the craft comprising a propulsion source for moving the craft to desired sections of a lake, and at least one device for spraying a slurry of the treatment agent and water over the surface of the lake. The improvement comprises a storage space in the hull of the craft for receiving and storing the treatment agent in dry form, the device for spraying comprising an ejector which, upon spraying, mixes water taken from the lake with dry treatment agent from the storage space, the water serving as a driving medium and the treatment agent as a secondary medium, the ejector communicating with a pump adapted to communicate with the outboard side of the craft for taking up the water from the lake, and further communicating with the storage space.
Preferably, in the above embodiment, the ejector communicates with the pump via a conduit and with the storage space via a conveyor conduit.
~Z~5~
In a preferred form of the above embodiment, the storage space is in the form of a V-shaped pocket, the bottom of which is formed as a chute accommodating a conveyor screw for conveying the treatment agent towards the ejector. In such a preferred form, the above-mentioned object is further enhanced.
In a further embodiment of the present invention, a neat and clean loading of the craft with the treatment agent, such as pulverulent lime, whilst aiding to establish an attractive job environment for the operator spreading the lime, is possible.
In such a further embodiment of the present invention, the storage space is covered by a tarpaulin supported by a multiplicity of displaceable hoops, a marginal portion of the tarpaulin projecting beyond a gunwale of the draft to form a longitudinal gap between the tarpaulin and the gunwale, excess air within the storage space being evacuated via the gap when the storage space is filled with treatment agent.
Brief d ascription of the drawings Having thus generally described the invention, reference will now be made to the accompanying drawings, illustrating preferred embodiments of the present invention, and in which:
Figs. 1-3 are perspective views illustrating the craft according to an embodiment of the present invent lion;
Fig. 4 is a cross-sectional view of the craft;
Fig. 5 is a longitudinal section of the forward half of the craft; and Fig. 6 is a perspective view illustrating the use of the craft in the water.
.
Detailed description of a preferred embodiment of the invention In Figs. 1-3, the craft generally designated 1 has an after wheelhouse 2. In the bows, the craft l has a combined mixing and spraying device designated 3 in its entirety. In Fig. 6, reference numeral 4 indicates the lime carried by the craft l.
Figs 1, 4 and 5 show that the major part of the craft l consists of a pocket 5 which is V-shaped in cross section and whose bottom is in the form of a chute 6 accommodating a conveyor screw 7 which is operated by an engine 8, preferably a diesel engine which is housed between the bows of the craft and a bulkhead 9. To be precise, the conveyor screw is operated by means of a hydraulic motor 8'.
The device 3 is mounted close to the bows, more particularly, within the region of a comparatively high deck lo and comprises an ejector which, in per so known manner, includes a housing 11, a mixing pipe 12 and a diffuser 13. The after end of the housing if commune-gates via a conduit 14 with a pump 16 which preferably is operated by a hydraulic pa 5~3~7 motor 15 and, in its turn, cor~unicates via a conduit 17 with an intake 18 (see Fig. 2) through which water from the lake can be taken aboard and conducted to the housing 11 by means of the pump 10. The water in the housing 11 serves in per so known manner as driving medium. At the same time, lime from the pocket 5 serves as secondary medium, and when the lime and the water are mixed in the pipe 12 and the diffuser 13, a slurry is formed which is discharged from the diffuser at a velocity depending upon the flow rate of the water pumped into the craft via the conduit 14. The lime is conveyed via the conduit 19 by the sub pressure which is established when the water passes through the ejector.
The conduit 19 preferably is a hose opening in the area of the forward end of the conveyor screw 7.
The storage space or pocket 5 normally is covered by a tarpaulin 20 which is carried by a multiplicity of parallel hoops 21 mounted on wheels 22 for moving the hoops along the gunwale 23 of the craft from the position shown in Fig. 6 in which the tarpaulin 20 completely covers the pocket Al into a position in the region of the forward bulk-head 9 for uncovering the pocket. As will appear from Fig. 4, the tarpaulin 20 extends slightly beyond the gunwale 23 to form between the longitudinal side edges of the tarpaulin and the gunwale a longitudinal gap 24 through which air can I pass. The pulverulent lime 4 is fed into the pocket 5 via a conduit 25 see Fig. 1), one end of which opens at the gunwale of the craft, while the other end opens in the region of the bottom of the pocket 5, i.e. approximately between the forward bulkhead 9 and the after bulkhead 9'.
SPY
When the lime is fed into the pocket, the tarpaulin 20 may cover the pocket completely, and the air that must then be evacuated from the pocket, is smoothly conducted through the gaps 24, while avoiding the formation of dust on the outboard side of the craft This means that the craft can be loaded without exposing the craft and its surroundings to lime dust, As will appear from Fig. 6, a pivotal pipe 26 is connected to the water intake 18 to facilitate taking-up of water directly from the lake. This pipe can be swung up-warmly out of the water to be out of the way when no lime is spread.
The craft also comprises a propulsion unit 27 equipped with a screw which is driven by a hydraulic motor 8" con-netted to the engine 8.
Fig. 6 illustrates how the craft traveling over the lake section to be treated is propelled by the unit 27l simultaneously as water is pumped into the craft from the lake and mixed in the ejector housing 11 to form a lime slurry which is ejected in a broad jet 28 and spread over the lake section in question. Preferably, water and lime powder are mixed in a mixing ratio of at least 3:1 r prefer-ably 4:1. Because the slurry thus formed is ejected in the form of comparatively heavy drops, the ejected material will be substantially insusceptible to wind, whereby the material can be uniformly distributed in the air without dust formation. When the lime slurry hits the surface of water, it also remains unaffected by the surface tension of the water, and the lime particles in the slurry drops ~L2~5~7 will immediately sink to the bottom at the point where they hit the surface.
Finally, it is pointed out that the terms "liming"
and "lake" as used in the specification and claims, must be interpreted in their widest sense. Thus, it is possible to use, instead of lime, other types of materials or mixtures of materials having a pH-increas-in or otherwise restorative effect on acidified lake water. The term Luke" comprises every type of water-course requiring treatment of the kind referred to in the present application.
It is of course also possible to arrange the craft to use one and the same propulsion source or engine both for navigating the craft on the lake and for spreading the lime.
It will be appreciated that modifications may be made to the above-described embodiments without depart-in from the spirit and scope of the invention.
,` . . , Jo ' 1
The present invention relates to a craft for spreading pulverulent -treatment agents, especially lime, over lake, said craft comprising a propulsion source for moving the craft to desired sections of the lake, and at least one device for spraying a slurry of the treatment agent and water over the surface of the lake.
Brief description o the invention The present invention has for an object to provide lo a craft for quick and convenient spreading of pullover lent lime or other treatment agents for restoring lake water as will as to carry out the actual spreading of the lime in a neat and clean way 9 whilst aiding to establish an attractive job environment for the operator spreading the lime.
In accordance with the above object, one embodiment of the present invention provides an improvement in a craft for spreading pulverulent treatment agents over lakes, the craft comprising a propulsion source for moving the craft to desired sections of a lake, and at least one device for spraying a slurry of the treatment agent and water over the surface of the lake. The improvement comprises a storage space in the hull of the craft for receiving and storing the treatment agent in dry form, the device for spraying comprising an ejector which, upon spraying, mixes water taken from the lake with dry treatment agent from the storage space, the water serving as a driving medium and the treatment agent as a secondary medium, the ejector communicating with a pump adapted to communicate with the outboard side of the craft for taking up the water from the lake, and further communicating with the storage space.
Preferably, in the above embodiment, the ejector communicates with the pump via a conduit and with the storage space via a conveyor conduit.
~Z~5~
In a preferred form of the above embodiment, the storage space is in the form of a V-shaped pocket, the bottom of which is formed as a chute accommodating a conveyor screw for conveying the treatment agent towards the ejector. In such a preferred form, the above-mentioned object is further enhanced.
In a further embodiment of the present invention, a neat and clean loading of the craft with the treatment agent, such as pulverulent lime, whilst aiding to establish an attractive job environment for the operator spreading the lime, is possible.
In such a further embodiment of the present invention, the storage space is covered by a tarpaulin supported by a multiplicity of displaceable hoops, a marginal portion of the tarpaulin projecting beyond a gunwale of the draft to form a longitudinal gap between the tarpaulin and the gunwale, excess air within the storage space being evacuated via the gap when the storage space is filled with treatment agent.
Brief d ascription of the drawings Having thus generally described the invention, reference will now be made to the accompanying drawings, illustrating preferred embodiments of the present invention, and in which:
Figs. 1-3 are perspective views illustrating the craft according to an embodiment of the present invent lion;
Fig. 4 is a cross-sectional view of the craft;
Fig. 5 is a longitudinal section of the forward half of the craft; and Fig. 6 is a perspective view illustrating the use of the craft in the water.
.
Detailed description of a preferred embodiment of the invention In Figs. 1-3, the craft generally designated 1 has an after wheelhouse 2. In the bows, the craft l has a combined mixing and spraying device designated 3 in its entirety. In Fig. 6, reference numeral 4 indicates the lime carried by the craft l.
Figs 1, 4 and 5 show that the major part of the craft l consists of a pocket 5 which is V-shaped in cross section and whose bottom is in the form of a chute 6 accommodating a conveyor screw 7 which is operated by an engine 8, preferably a diesel engine which is housed between the bows of the craft and a bulkhead 9. To be precise, the conveyor screw is operated by means of a hydraulic motor 8'.
The device 3 is mounted close to the bows, more particularly, within the region of a comparatively high deck lo and comprises an ejector which, in per so known manner, includes a housing 11, a mixing pipe 12 and a diffuser 13. The after end of the housing if commune-gates via a conduit 14 with a pump 16 which preferably is operated by a hydraulic pa 5~3~7 motor 15 and, in its turn, cor~unicates via a conduit 17 with an intake 18 (see Fig. 2) through which water from the lake can be taken aboard and conducted to the housing 11 by means of the pump 10. The water in the housing 11 serves in per so known manner as driving medium. At the same time, lime from the pocket 5 serves as secondary medium, and when the lime and the water are mixed in the pipe 12 and the diffuser 13, a slurry is formed which is discharged from the diffuser at a velocity depending upon the flow rate of the water pumped into the craft via the conduit 14. The lime is conveyed via the conduit 19 by the sub pressure which is established when the water passes through the ejector.
The conduit 19 preferably is a hose opening in the area of the forward end of the conveyor screw 7.
The storage space or pocket 5 normally is covered by a tarpaulin 20 which is carried by a multiplicity of parallel hoops 21 mounted on wheels 22 for moving the hoops along the gunwale 23 of the craft from the position shown in Fig. 6 in which the tarpaulin 20 completely covers the pocket Al into a position in the region of the forward bulk-head 9 for uncovering the pocket. As will appear from Fig. 4, the tarpaulin 20 extends slightly beyond the gunwale 23 to form between the longitudinal side edges of the tarpaulin and the gunwale a longitudinal gap 24 through which air can I pass. The pulverulent lime 4 is fed into the pocket 5 via a conduit 25 see Fig. 1), one end of which opens at the gunwale of the craft, while the other end opens in the region of the bottom of the pocket 5, i.e. approximately between the forward bulkhead 9 and the after bulkhead 9'.
SPY
When the lime is fed into the pocket, the tarpaulin 20 may cover the pocket completely, and the air that must then be evacuated from the pocket, is smoothly conducted through the gaps 24, while avoiding the formation of dust on the outboard side of the craft This means that the craft can be loaded without exposing the craft and its surroundings to lime dust, As will appear from Fig. 6, a pivotal pipe 26 is connected to the water intake 18 to facilitate taking-up of water directly from the lake. This pipe can be swung up-warmly out of the water to be out of the way when no lime is spread.
The craft also comprises a propulsion unit 27 equipped with a screw which is driven by a hydraulic motor 8" con-netted to the engine 8.
Fig. 6 illustrates how the craft traveling over the lake section to be treated is propelled by the unit 27l simultaneously as water is pumped into the craft from the lake and mixed in the ejector housing 11 to form a lime slurry which is ejected in a broad jet 28 and spread over the lake section in question. Preferably, water and lime powder are mixed in a mixing ratio of at least 3:1 r prefer-ably 4:1. Because the slurry thus formed is ejected in the form of comparatively heavy drops, the ejected material will be substantially insusceptible to wind, whereby the material can be uniformly distributed in the air without dust formation. When the lime slurry hits the surface of water, it also remains unaffected by the surface tension of the water, and the lime particles in the slurry drops ~L2~5~7 will immediately sink to the bottom at the point where they hit the surface.
Finally, it is pointed out that the terms "liming"
and "lake" as used in the specification and claims, must be interpreted in their widest sense. Thus, it is possible to use, instead of lime, other types of materials or mixtures of materials having a pH-increas-in or otherwise restorative effect on acidified lake water. The term Luke" comprises every type of water-course requiring treatment of the kind referred to in the present application.
It is of course also possible to arrange the craft to use one and the same propulsion source or engine both for navigating the craft on the lake and for spreading the lime.
It will be appreciated that modifications may be made to the above-described embodiments without depart-in from the spirit and scope of the invention.
,` . . , Jo ' 1
Claims (5)
1. In a craft for spreading pulverulent treatment agents over lakes, said craft comprising a propulsion source for moving said craft to desired sections of a lake, and at least one device for spraying a slurry of the treatment agent and water over the surface of said lake, the improvement comprising a storage space in the hull of said craft for receiving and storing said treatment agent in dry form, said device for spraying comprising an ejector which, upon spraying, mixes water taken from said lake with dry treatment agent from said storage space, the water serving as a driving medium and the treatment agent as a secondary medium, said ejector communicating with a pump adapted to communicate with the outboard side of said craft for taking up the water from said lake, and further communicating with said storage space.
2. A craft as claimed in claim 1, wherein said ejector communicates via a conduit with said pump and via a conveyor conduit with said storage space.
3. A craft as claimed in claim 1, wherein said treatment agent comprises lime.
4. A craft as claimed in claim 1, 2 or 3, charac-terized in that said storage space is in the form of a V-shaped pocket, the bottom of which is formed as a chute accommodating a conveyor screw for conveying said treatment agent towards said ejector.
5. A craft as claimed in claim 1, 2 or 3, charac-terized in that said storage space is covered by a tarpaulin supported by a multiplicity of displaceable hoops, a marginal portion of said tarpaulin projecting beyond a gunwale of said craft to form a longitudinal gap between said tarpaulin and said gunwale, excess air within said storage space being evacuated via said gap when said storage space is filled with treatment agent.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE8302106-3 | 1983-04-15 | ||
| SE8302106A SE458604B (en) | 1983-04-15 | 1983-04-15 | SHIPPING FOR THE CALCULATION OF SEA |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1215887A true CA1215887A (en) | 1986-12-30 |
Family
ID=20350812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000451070A Expired CA1215887A (en) | 1983-04-15 | 1984-04-02 | Craft for spreading pulverulent treatment agents over lakes |
Country Status (4)
| Country | Link |
|---|---|
| CA (1) | CA1215887A (en) |
| DE (1) | DE3413702A1 (en) |
| GB (1) | GB2139569B (en) |
| SE (1) | SE458604B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU785302B2 (en) * | 2001-06-22 | 2007-01-04 | Beath, Jason Ian Nathaniel | Waterways lime spreader |
| US7462279B2 (en) | 2003-01-31 | 2008-12-09 | James Gilder Dixon | Waterways lime spreader |
| DE102007043750A1 (en) † | 2007-09-13 | 2009-03-19 | Rheinkalk Gmbh | Vehicle for introducing alkaline substances into waters |
| DE202010001968U1 (en) | 2010-02-06 | 2010-04-22 | Rabe, Wolfgang, Dipl.-Chem. | Watercraft with dedusting system for the introduction of powdered substances on water |
| DE102016122182A1 (en) | 2016-11-18 | 2018-05-24 | ABG Anlagen-, Bau- und Betriebsgesellschaft mbH Dresden | Device for introducing chemicals into bodies of water |
| DE202016106471U1 (en) | 2016-11-18 | 2016-11-29 | ABG Anlagen-, Bau- und Betriebsgesellschaft mbH Dresden | Device for introducing chemicals into bodies of water |
| CN113697046B (en) * | 2021-09-06 | 2022-08-23 | 湖南久正环保科技有限公司 | Unmanned ship is thrown to prosthetic biological agent of water ecology long-range throwing |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB578369A (en) * | 1941-11-15 | 1946-06-26 | Thomas Frederick Hurley | Improvements relating to the obscuring of water surfaces |
| FR1567005A (en) * | 1966-03-28 | 1968-05-16 | ||
| US3514905A (en) * | 1967-07-03 | 1970-06-02 | Mckenzie Pump Corp | Hydraulic method and apparatus for dispensing granular material under pressure |
| GB1247339A (en) * | 1967-10-24 | 1971-09-22 | Abrasive Dev | Wet blasting apparatus |
| GB1271512A (en) * | 1968-05-14 | 1972-04-19 | British Steel Corp | Improvements in or relating to ships for carrying bulk cargoes and to their discharge |
-
1983
- 1983-04-15 SE SE8302106A patent/SE458604B/en not_active IP Right Cessation
-
1984
- 1984-04-02 CA CA000451070A patent/CA1215887A/en not_active Expired
- 1984-04-12 DE DE19843413702 patent/DE3413702A1/en not_active Withdrawn
- 1984-04-16 GB GB08409812A patent/GB2139569B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB2139569A (en) | 1984-11-14 |
| GB8409812D0 (en) | 1984-05-23 |
| SE458604B (en) | 1989-04-17 |
| GB2139569B (en) | 1986-05-08 |
| SE8302106D0 (en) | 1983-04-15 |
| DE3413702A1 (en) | 1984-10-18 |
| SE8302106L (en) | 1984-10-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry | ||
| MKEX | Expiry |
Effective date: 20040402 |