CA1178977A - Peat treatment machine - Google Patents
Peat treatment machineInfo
- Publication number
- CA1178977A CA1178977A CA000418055A CA418055A CA1178977A CA 1178977 A CA1178977 A CA 1178977A CA 000418055 A CA000418055 A CA 000418055A CA 418055 A CA418055 A CA 418055A CA 1178977 A CA1178977 A CA 1178977A
- Authority
- CA
- Canada
- Prior art keywords
- peat
- machine
- press
- mobile
- bog
- 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
Landscapes
- Treatment Of Sludge (AREA)
Abstract
ABSTRACT
A mobile peat cutting and dewatering machine capable of operating in the peat bog which comprises at the front of the machine a peat harvesting device capable of removing a few centimetres of peat from the bog, a peat press mounted on tracks, which is fed by transport means from the peat harvesting device, and means for the removal of pressed peat from the mobile machine. The tracks are suitably caterpillar tracks of dimensions such that the track loading of the machine is less than 2.8 pounds per square inch. The peat harvesting device is suitable a transverse scraper screw capable of removing 3-10 centimetres of peat from the surface of the peat bog, which levels the surface of the peat bog for the tracks of the machine. The water released from the peat in the peat press is suitably collected and recycled to wash the rollers of the peat press.
A mobile peat cutting and dewatering machine capable of operating in the peat bog which comprises at the front of the machine a peat harvesting device capable of removing a few centimetres of peat from the bog, a peat press mounted on tracks, which is fed by transport means from the peat harvesting device, and means for the removal of pressed peat from the mobile machine. The tracks are suitably caterpillar tracks of dimensions such that the track loading of the machine is less than 2.8 pounds per square inch. The peat harvesting device is suitable a transverse scraper screw capable of removing 3-10 centimetres of peat from the surface of the peat bog, which levels the surface of the peat bog for the tracks of the machine. The water released from the peat in the peat press is suitably collected and recycled to wash the rollers of the peat press.
Description
lil789'77 ... -- 1 --P~3AT TREATMENT ~ACHINE
The present invention relates to a machine which is capable of dewatering peat on site in the peat bog.
Various methods for dewatering peat are known 5 involving the use of pressure and/or heat, but these have always involved the removal of the wet peat from the peat bog and its transport to the factory containing the dewatering machine. We have now devised a machine which comprises the combination of a leveller and a track 10 mounted press as hereinafter described by which a peat dewatering machine is provided which is capable of operating in the peat bog all the year round.
Accordingly the present invention is for a mobile peat cutting and dewatering machine capable of operating 15 in the peat bog which comprises a mobile track mounted machine where the front of the machine is a peat harvesting device capable of removing a few centimetres of peat from the bog, the device feeding ~ransport means which conveys the harvested peat to the peat press mounted 20 on tracks, wherein the peat is dewatered by pressure, the pressed peat being passed to a discharge point for removal from the press.
The peat press suitably comprises a series of rollers which press the peat to remove water, usually in two or 25 more stages. Suitable peat presses are known in the art, .., 1~ -JtI~3 77
The present invention relates to a machine which is capable of dewatering peat on site in the peat bog.
Various methods for dewatering peat are known 5 involving the use of pressure and/or heat, but these have always involved the removal of the wet peat from the peat bog and its transport to the factory containing the dewatering machine. We have now devised a machine which comprises the combination of a leveller and a track 10 mounted press as hereinafter described by which a peat dewatering machine is provided which is capable of operating in the peat bog all the year round.
Accordingly the present invention is for a mobile peat cutting and dewatering machine capable of operating 15 in the peat bog which comprises a mobile track mounted machine where the front of the machine is a peat harvesting device capable of removing a few centimetres of peat from the bog, the device feeding ~ransport means which conveys the harvested peat to the peat press mounted 20 on tracks, wherein the peat is dewatered by pressure, the pressed peat being passed to a discharge point for removal from the press.
The peat press suitably comprises a series of rollers which press the peat to remove water, usually in two or 25 more stages. Suitable peat presses are known in the art, .., 1~ -JtI~3 77
- 2 and are described for example in German Patent Specification No 26 29 980.
The peat harvesting device is suitably a transverse scraper screw which removes a few centimetres, for example 5 10 centimetres or less, and suitably 3-10 centime~res, of peat from the surface of the peat bog and which effectively levels the surface for the tracks of the machine. The harvested peat is suitably fed to a conveyor belt which lifts the peat to the feeder point for the 10 press. The rollers in the press may be of various types and in the preferred system the peat is sieved to remove or break up large lumps and the sieved peat is passed as a layer a few centimetres thick but several metres wide into a roller system, which dewaters the peat by pressure, 15 producing dewatered peat, containing suitably only 65~
moisture. The water released from the peat is suitably collected so that the separated water can be recycled to wash the rollers in situ.
For convenience and to aid understanding of the 20 invention, a preferred form of the machine will now be described by way of illustration with respect to the accompanying Figure 1 and Figure 2, in which Figure 1 is a diagramatic longitudinal section of the machine, and Figure 2 is a transverse section through the machine of 25 Figure 1.
11 ;'t~3'~7 In the preferred form of machine, the peat harvesting device comprises the transverse scraper screw, l, which is capable of removing a few centimetres of peat from the surface, the depth of the scrape being adjustable.
S Preferably the depth of scrape is 3-10 cm. The transverse scraper screw serves the dual purpose of levelling the peat surface for the machine to travel over the peat bog and to feed peat into the peat press. The transverse scraper screw feeds peat to the conveyor belt, 2, which 10 carries the peat up to the hopper, 3, which feeds the press. The lifted peat is sifted by a vibrating screw and spiked drum to break up large lumps and to remove non-peat material such as wood and stones. The crumbled peat then falls onto the feeder for the belt press. The belt press 15 is known in the art, but for convenience is described herein. The belt press comprises a continuous belt which passes through a series of rollers which are pressed together through a hydraulic system. The peat is first pressed between flexible absorbent belts to form a cake 20 and remove part of the moisture. The peat is then conveyed to a second set of belts which enclose the peat layer at both sides, and the roller pressure on the belts is sufficient to remove the remainder of the water which it is desired to remove from the peat.
The water which is removed in the pressing operations 11 78~3 ~7 is collected in receptacles, and the collected water can be used to wash the rollers when necessary after f iltration, and excess water can be passed out to drainage.
The pressed peat is removed from the belt by scraper 5 blades and is collected in the product hopper, 4, from which the pressed peat can be removed. Suitably the pressed peat is fed from the product hopper to trucks for transport to the factory.
The press is carried by the caterpillar tracks, 5, 10 which are suf ficiently wide to carry the peat press over the peat bog. The dimensions of the caterpillar tracks should be such that the track loading of the machine is less than 2.8 pounds per square inch. In a preferred embodiment the track loading is about 2.0 pounds per 15 square inch. The motive power for the whole machine is suitably a diesel engine mounted behind the transverse scraper. This provides the motive power for the tracks, the press and the scraper. If necessary more than one diesel engine may be provided.
The number and types of rollers used may be varied to suit the nature of the peat to be pressed.
The operation of the machine of the present invention provides very s~lbstantial economies over previously used methods of dewatering peat, which have all involved the 25 removal of wet peat from the peat bog to the factory for ~'7~ 7 the drying operation, involving the transport of substantial quantities of water. Peat removal systems usually rely on partial drying on site, so that the operations are dependent on weather conditions.
S The peat press machine according to the present invention can be operated on site in virtually all weather conditions, with the possible exception of frost conditions where the peat bog is frozen and the screw scraper cannot operate. Thus the traditional operations 10 cutting, drying on site, transport to the factory, and dewatering in the factory, are reduced to a single operation, carried out on the peat bog.
The peat harvesting device is suitably a transverse scraper screw which removes a few centimetres, for example 5 10 centimetres or less, and suitably 3-10 centime~res, of peat from the surface of the peat bog and which effectively levels the surface for the tracks of the machine. The harvested peat is suitably fed to a conveyor belt which lifts the peat to the feeder point for the 10 press. The rollers in the press may be of various types and in the preferred system the peat is sieved to remove or break up large lumps and the sieved peat is passed as a layer a few centimetres thick but several metres wide into a roller system, which dewaters the peat by pressure, 15 producing dewatered peat, containing suitably only 65~
moisture. The water released from the peat is suitably collected so that the separated water can be recycled to wash the rollers in situ.
For convenience and to aid understanding of the 20 invention, a preferred form of the machine will now be described by way of illustration with respect to the accompanying Figure 1 and Figure 2, in which Figure 1 is a diagramatic longitudinal section of the machine, and Figure 2 is a transverse section through the machine of 25 Figure 1.
11 ;'t~3'~7 In the preferred form of machine, the peat harvesting device comprises the transverse scraper screw, l, which is capable of removing a few centimetres of peat from the surface, the depth of the scrape being adjustable.
S Preferably the depth of scrape is 3-10 cm. The transverse scraper screw serves the dual purpose of levelling the peat surface for the machine to travel over the peat bog and to feed peat into the peat press. The transverse scraper screw feeds peat to the conveyor belt, 2, which 10 carries the peat up to the hopper, 3, which feeds the press. The lifted peat is sifted by a vibrating screw and spiked drum to break up large lumps and to remove non-peat material such as wood and stones. The crumbled peat then falls onto the feeder for the belt press. The belt press 15 is known in the art, but for convenience is described herein. The belt press comprises a continuous belt which passes through a series of rollers which are pressed together through a hydraulic system. The peat is first pressed between flexible absorbent belts to form a cake 20 and remove part of the moisture. The peat is then conveyed to a second set of belts which enclose the peat layer at both sides, and the roller pressure on the belts is sufficient to remove the remainder of the water which it is desired to remove from the peat.
The water which is removed in the pressing operations 11 78~3 ~7 is collected in receptacles, and the collected water can be used to wash the rollers when necessary after f iltration, and excess water can be passed out to drainage.
The pressed peat is removed from the belt by scraper 5 blades and is collected in the product hopper, 4, from which the pressed peat can be removed. Suitably the pressed peat is fed from the product hopper to trucks for transport to the factory.
The press is carried by the caterpillar tracks, 5, 10 which are suf ficiently wide to carry the peat press over the peat bog. The dimensions of the caterpillar tracks should be such that the track loading of the machine is less than 2.8 pounds per square inch. In a preferred embodiment the track loading is about 2.0 pounds per 15 square inch. The motive power for the whole machine is suitably a diesel engine mounted behind the transverse scraper. This provides the motive power for the tracks, the press and the scraper. If necessary more than one diesel engine may be provided.
The number and types of rollers used may be varied to suit the nature of the peat to be pressed.
The operation of the machine of the present invention provides very s~lbstantial economies over previously used methods of dewatering peat, which have all involved the 25 removal of wet peat from the peat bog to the factory for ~'7~ 7 the drying operation, involving the transport of substantial quantities of water. Peat removal systems usually rely on partial drying on site, so that the operations are dependent on weather conditions.
S The peat press machine according to the present invention can be operated on site in virtually all weather conditions, with the possible exception of frost conditions where the peat bog is frozen and the screw scraper cannot operate. Thus the traditional operations 10 cutting, drying on site, transport to the factory, and dewatering in the factory, are reduced to a single operation, carried out on the peat bog.
Claims (7)
1) A mobile peat cutting and dewatering machine capable of operating in the peat bog comprising a mobile track mounted machine which comprises a peat press mounted on tracks wherein the front of the machine is a peat harvesting device capable of removing a few centimetres of peat from the peat bog, the peat harvesting device feeding transport means capable of conveying the harvested peat to the peat press in which the peat is capable of being dewatered by pressure, and means for the removal of the pressed peat from the machine.
2) A mobile peat cutting and dewatering machine as claimed in claim 1 wherein the peat press comprises a series of rollers which press the peat to remove water in at least two stages.
3) A mobile peat cutting and dewatering machine as claimed in claim 1 wherein the peat harvesting device is a transverse scraper screw.
4) A mobile peat cutting and dewatering machine as claimed in any one of claims 1 to 3 wherein the peat harvest device is capable of removing 3-10 centimetres of peat from the surface of the peat bog.
5) A mobile peat cutting and dewatering machine as claimed in any one of claims 1 to 3 wherein the means of removal of the pressed peat comprises a product hopper capable of delivering the pressed peat to transport means.
6) A mobile peat cutting and dewatering machine as claimed in any one of claims 1 to 3 wherein the tracks are caterpillar tracks of dimensions such that the track loading of the machine is less than 2.8 pounds per square inch.
7) A mobile peat cutting and dewatering machine as claimed in any one of claims 1 to 3 wherein the water released from the peat in the peat press is collected and recycled to wash the rollers of the peat press.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8138225 | 1981-12-18 | ||
| GB81/38225 | 1981-12-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1178977A true CA1178977A (en) | 1984-12-04 |
Family
ID=10526699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000418055A Expired CA1178977A (en) | 1981-12-18 | 1982-12-17 | Peat treatment machine |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1178977A (en) |
-
1982
- 1982-12-17 CA CA000418055A patent/CA1178977A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEC | Expiry (correction) | ||
| MKEX | Expiry |