FI108670B - Feeding device - Google Patents

Description

108670

FEEDER

The present invention relates to a feeder for feeding solid fuel, the feeder comprising a frame 5 disposed above the fuel in a solid fuel storage, a rotatably mounted discharge conveyor formed from two or more pivotable and pivotable fuel elements, and a lifting device for moving the body relative to the storage.

10 When solid fuel, such as wood chips, other sawdust and / or peat is used, it is brought to a solid fuel storage facility and fed to it for incineration. Such a warehouse uses a discharge conveyor or the like, which unloads the fuel from the storage conveyor, which in turn transfers it to the combustion plant. In general, so-called. rod dismounters with bevelled recesses or the like, which make a direct 15 return movements. In addition, chain disassemblers with a horizontal chain or the like down are known. Also known are disassemblers having a top-supported chain or the like, which is lowered and transfers fuel to the transfer conveyor.

Where unloaders are located below the fuel, maintenance is difficult and. 20 especially when equipment is broken during dismantling, remedies are difficult.

* · · · '·' _ In addition, the unloading equipment must be designed and made durable as it is subjected to heavy stress when fuel is pressed. Often, when unloading fuel, the vehicle is also driven.:: Partially over the unloading equipment and the unloading equipment must also withstand this strain.

25 In the Finnish utility model no. Fig. 98 shows a silo-like, top-down peat extractor built on a demountable platform. It has solid walls and is filled in the usual way by driving the vehicle near the silo and pouring fuel into the silo. SE-A-411888 discloses a fuel. ···, a discharge device which is a conveyor located above the fuel. The unloading device includes a lifting device 30 for moving the conveyor body relative to the storage. This publication does not provide a way to fill the warehouse · ... · 'and fill the warehouse in the usual way by driving a vehicle near the warehouse and pouring fuel into the warehouse. These solutions:. ·. place restrictions on the placement of a silo or warehouse. In addition, the fuel often does not spread evenly, but must be separately applied and smoothed before the fuel feed can begin.

Current unloaders tend to unload the fuel as much as possible at a time and there is a risk that the transport equipment behind the unloaders will become clogged.

108670 2

Particularly in the case of small biofuel-fired heating plants, malfunctions are usually caused by the freezing of the fuel, which causes problems with fuel supply. When the fuel freezes, especially the small fuel, it freezes. As it is moved forward with current unloaders, large frozen fuel blocks may clog the transfer device. There is a risk of fire when the transfer device is empty. In the event of a fire, the fire may proceed along the transfer device to the fuel depot or premises where the depots are located.

It is an object of the invention to provide a fuel feeder for eliminating the drawbacks associated with known feeders. In particular, it is an object of the invention to provide a reliable, durable, easy to maintain and repair feeder. It is a further object of the invention to provide a feeder which may be relatively lightweight and inexpensive in manufacturing and operating costs.

The object of the invention is achieved by a feeding device characterized by what is set forth in the claims.

According to the invention, at least one of the warehouse walls, the roof, the feeder frame and the unloading conveyor can be pivoted or raised so that the vehicle can partially drive into the warehouse and drain its fuel cargo into the warehouse. The lifting device included in the feeder 20 allows the feeder frame to be lifted from storage so that the vehicle can discharge to storage. In addition, the feeder can be used to raise the feeder for maintenance or repairs, for example. The feeder may be lightweight because it is not underneath the fuel and does not have to withstand fueling and discharging; *: weight of the vehicle when filling.

In a further preferred embodiment of the invention, the discharge conveyor body is provided with at least; ', On a single drive shaft connected to the motor and tracked to move the unloading conveyor. The drive shaft makes the unloading conveyor work efficiently.

According to a preferred embodiment of the invention, the drive shaft is disposed at a distance • · •; · 'From the discharge threshold between the fuel storage and the transfer device. The distance between the drive shaft and the unloading threshold is such that the size of the discharge opening formed by them is so small that any fuel tanks in the opening are reduced to a suitable size before they reach the transfer conveyor. The drive shaft is mounted on 35 storage frames, either fixed or adjustable and lockable. Once adjustably secured, the size of the outlet can be adjusted as desired to the fuel used, the various feed or transfer devices, or the size of the heating plant.

108670 3

In a further embodiment of the invention, the bottom of the warehouse is provided with nozzles through which warm air is blown into the warehouse. Thus, the fuel can be heated and thus prevented from freezing and caking.

The invention will now be explained in more detail with reference to the accompanying drawing, in which Figure 1 illustrates an embodiment of the feeder according to the invention when filling a warehouse, Figure 2 shows the feeder according to Figure 1 in a step of depleting the warehouse; Figure 4 shows a top view of the feeder according to Figures 1-3, and Figure 5 shows another embodiment of the feeder according to the invention, viewed from the side and schematically shown in different positions.

! 15

The solid fuel feeder according to Figs. In this embodiment, there are four body parts 20 and their ends articulated adjacent to each other to form a \ rectangle whose size and shape changes as the equipment operates. In other applications, the number of parts · may vary as desired. The body 2 and the unloading conveyor 3 are housed in fixed I; · ·: On top of fuel 4. When both the feeder body and the discharge conveyor are positioned on solid fuel, it provides a smooth peeling of fuel from the fuel surface and: in a controlled manner. The equipment is easy to maintain and repair because all its components are / are always visible.

The transfer device 5 is located at the top of the warehouse. The transfer device is a conventional transfer device whose structure may vary in different embodiments of the invention. In this application, the transfer device is a '- 30 screw conveyor. Other applications may use '... · other conveyors known per se.

, ·. The feeder body 2 is provided with a single drive shaft 7, * connected to the motor (not shown), arranged to move the unloading conveyor. In this embodiment, this drive shaft 7 is fixedly attached to the structure of the fuel storage 1. Further, the drive shaft 7 is located a short distance from the discharge threshold 8 between the fuel storage 1 and the transfer device 5.

108670 4

The discharge conveyor 3 comprises chain guides, chains mounted thereto and transverse conveying means 11 attached thereto. The discharge conveyor 3 is disposed to transfer solid fuel 4 from the storage to the fuel transfer device 5.

5 Conventional fuel intermediate storage. The wall 9 on the side of the transfer device 5 of the warehouse 1 is inclined in this embodiment. The bottom of the storage 1 is provided with openings or separate nozzles through which warm air is created to be created or blown into the storage. The nozzles are conventional nozzles not shown in the figures.

10 When additional fuel is brought into storage 1, the feeder body 2 and the unloading conveyor 3 are raised by means of a lifting device 6 as shown in Figure 1. The lifting device is also arranged to raise the storage ceiling 10 upwards. This allows the vehicle to partially drive into the warehouse and empty its fuel cargo into the warehouse.

15 In the next step, the vehicle is driven away and the feeder and roof lowered using the hoist. The feeder discharge conveyor is then over the fuel. Its position corresponds to the position shown by the dashed lines in Figure 3. As the discharge conveyor rotates, the fuel moves against the discharge threshold and through the discharge opening between the discharge threshold and the conveyor to the transfer conveyor. As the amount of fuel decreases, the discharge conveyor moves downward due to gravity, without the need for a separate drive. In some applications, the unloading conveyor can be moved downwards, for example by means of a lifting device.

·; · '; In Figure 2, thin dashed circles denote the displacement of * · · '·' · joints between parts when defuelling. Similarly, the parts move relative to each other and • · 25 their rectangle shapes and sizes change. In Fig. 2, · · · v; in the case of the transfer conveyor, most of the fuel has been transported and in the case shown in the thicker dashed lines in Figure 3, the transport conveyor has transported the fuel ·; ··: completely. Throughout operation, the unloading conveyor is against the fuel surface and peeling the surface and effectively transferring the fuel to the transfer conveyor. In the final phase, • · · 30 demolition conveyors are against the oblique wall of the warehouse, and all fuel is removed ··· * from the warehouse. The equipment may also be designed to accommodate the inventory in question. the wall is upright and in such an arrangement the body of the unloading conveyor can turn against this wall, whereby the warehouse is completely emptied.

In the embodiment of Figure 5, the body 2 is formed of two articulated parts 2a, 2b. Otherwise, the feeder will operate as described above. The drive shaft 7 is fixed in the immediate vicinity of the unloading threshold 8, and the drive shaft rotates the unloading conveyor 3 on the body by lifting the body by means of a lifting device (not shown in Fig. 108670 5) when the fuel 1 is brought into storage. The picture shows the frame in two positions; thinner dashed lines when the warehouse is relatively full of fuel and thicker lines when the warehouse is almost empty. In addition, the dashed lines show the points of articulation of the body members at various locations. Also in this embodiment, the body 5 moves downward due to gravity as the amount of fuel decreases.

j

The feeder according to the invention can be used for feeding all kinds of chips, peat, various saw or wood waste, forest chips and other solid fuels suitable for the purpose. In addition, the feeder may also be used to feed other materials, such as soil, such as soil, into the treatment apparatus.

The invention is not limited to the preferred embodiments shown, but may vary within the scope of the inventive idea of the claims.

15

Claims (7)

1. Solid fuel supply feeder, to which the feeder belongs a frame (2) located in the solid fuel bearing (1) above the fuel, a solid relief relief rotatable conveyor (3), which frame (2) is formed by two or a plurality of articulated and in relation to each other parts (2a, 2b, 2c, 2d) which are arranged to move the solid fuel (4) Μη bearing to the fuel displacement device (5) and a lifting device (6) for displacement of the frame (2) in relation to the bearing, characterized in that at least one of the walls of the bearing, the roof (10), the frame of the feeder device (2) and the unloading conveyor (3) stares to be turned or lifted so as to allow a vehicle to be partially driven into the warehouse and to empty their load of fuel in the tractor. 2. Feeder device according to claim 1, characterized in that the frame (2) of the feeder device (3) is provided with at least one drive shaft (7) interconnected with a motor, which is arranged to move on the unloading conveyor! (3) · Feeder according to claim 2, characterized in that the operating shaft (7) is located at a distance from the relief threshold (8) between the fuel supply (1) and | · The displacement device (5). • · *. ·. Feeder device according to claim 1 or 2, characterized in that, · *; the operating shaft (7) is fixedly adjustable to the structure of the fuel supply (1). 25 Feeder according to any one of claims 1-4, characterized in that the conveyor (3) of the unloading conveyor (3) includes chain conductors, supported on them chains and fixed, transverse transport means (11). Feeder according to any one of claims 1-6, characterized in that, * ·. the bottom of the stock (1) is provided with nozzles through which hot air is arranged to be blown in. in the storage room. :,:! Feeder according to any one of claims 1 to 6, characterized in that: The wall (1) of the bearing (1) on the side of the moving device (5) is oblique.