DE1960374A1 - Feeding device - Google Patents

Description

DR. KURT-RUDOLF EIKENBERG

"PATENT ADVOCATE

j S HAMHOVIB · fCHACKtTHAISI 1 · TILIIOH (Olli) 1140 ·· · KAIIL PATIHTlOH HAHHOVM

Jens Aage Henriksen. 259/14

Feeding device

The invention relates to a feeding device for intermittent blowing out of
Amounts of fish feed above the water surface of a fish breeding pond or brood basin with a feed container which has an outlet to a metering chamber to which the inlet pipe for the intermittent supply of compressed air and a blow-out pipe are connected,

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by means of which a quantity of feed located in the metering chamber can be blown out through the compressed air ι the inlet pipe being connected to an air chamber via a remote control valve.

It is already known several

such devices in a row along the various ponds in a fish rearing system use, with compressed air being supplied to the individual devices by a common compressor and the individual devices by means of Solenoid valves are controlled, but in addition to the necessary pneumatic system require electrical installation. You solenoid valves are doing this during the farmer of some Seconds actuated at intervals of, for example, ten minutes, so that with each actuation an amount of feed from the. Dosing chamber is blown over the pond via the blow pipe. Then a new amount of feed enters the dosing chamber and the air pressure is in the air chamber rebuilt, so that the devices come back for a next actuation that is over a timer is controlled are ready.

To get the necessary electrical

It has been proposed to avoid installation »close the devices by means of so-called vent valves actuate 'which respond to a sudden drop in pressure in the

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Responding pressure supply lines and per se in connection with many pneumatic tools and the like are known. However, such systems are particularly beneficial With regard to your maintenance and servicing, there are major problems with eich.

It is also in both systems

very disadvantageous that the fish food is blown out only at the exact moment when the * valve is opened, if the valve is suddenly opened, the full air pressure comes into effect and blows out the feed in such a way that that it only lands in a relatively narrow area of the water surface and so the feeding is not as even as desired can be executed.

It is the aim of the present invention to provide a feeding device that is simple and has a robust construction and enables better distribution of the feed over a larger area of the pond.

The invention is based on a

feeding device described above in that in conjunction with de *. Inlet pipe or the control valve, a shut-off device for the air is provided, which can be opened attenuated in such a way that the initial air flow through the dosing chamber grows gradually.

A special embodiment of the invention is characterized in that the control valve by a Control pressure medium - can be actuated preferably by compressed air, which is a closed control chamber with a movable wall part can be supplied, the

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dergeetalt in operative connection with a valve part stands that this valve part is lifted from its valve seat in the direction of the pressure side, if the control chamber is supplied with sufficient pressure «

A feeding device with

Such a control valve is easy to operate so that the valve does not open with a sudden movement, since the control pressure is constantly from the Pressure in the air chamber is counteracted. This also applies in the event that the valve is ready has started to open. When the control pressure is fed through a relatively narrow and long pipeline, the pressure in the control chamber forms steadily, so that the valve is relatively opens slowly and the chuck that was blown out first is placed on the Water falls and then the feed is blown further and further away from the device, so that it falls over a large area on the surface of the water and is thus distributed in the desired way.

In a further development of the invention it is provided that in on. I know that Air chambers from several feeding devices compressed air from a common compressor

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is supplied and that the same compressor also delivers the compressed air for the control valves. In this way, good opening characteristics of all control valves can be achieved, although for they and a common compressed air source is used for the air tank.

The following is the invention

explained in more detail with reference to the drawings. In the drawings it shows

1 shows a schematic, perspective view of an inventive device Fish feeding system and

SIg. 2 shows a section through one according to of the invention and provided with a control valve air chamber. (

In the fish feeding system shown in FIG a number of feeding devices 2 are provided which are set up along a number of rearing ponds are. Each feeding device 2 comprises a feed container 4 with an underlying metering chamber 6, with a blow-out pipe 8 for blowing out amounts of feed over the surface of a rearing pond and a Inlet pipe is provided through which- compressed air

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can be let in from an air vessel 12, to which the compressed air is fed through a pipe 14. One that can be actuated by air pressure Control valve 16 is arranged below the air chamber 12 and with a pipeline 18 for supply the actuation pressure connected.

A timer 20 is used for

Control of a solenoid valve which is arranged in the connection between the pipes 14 and 18 with a common compressor 22. These be ¹ id en solenoid valves are labeled 24 and 26. At least the valve 26 is a three-way valve which, in its closed position, connects the pipeline 18 to the free atmosphere.

The timer 20 is designed so that it the valve 26 for a few seconds at predetermined intervals - for example every 10 minutes - opens and the valve 24 before or at the same time as the opening of the valve 26 closes and it closes at the same time or shortly after the closing of the Valve 26 opens again.

Because of this, normally

an air pressure built up in the air vessels 12, i.e. the pipeline 14, for a relatively long time does not need to have a large diameter.

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At the end of this time, the valves 16 are actuated by actuating the valve 26, so that the Air pressure in the air chambers through the inlet pipe 10, the metering chamber 6 and the exhaust pipe 8 can escape and at the same time blow out a quantity of feed. If the .positions of the valves 24 '* and 26 are changed, a new air pressure is built up in the air chambers and the Actuating pressure in the pipeline 8 removed so that the valves 16 are closed again.

In the pipeline 14 can

a common reducing valve 28 can be arranged, while a manually closed valve 30 in connection with a check valve 32 (see FIG. 2) is attached to each air chamber, so that the full air pressure in the air chamber can be obtained even if not all air chambers are exactly at ( be emptied at the same time.

flg. 2 shows an air chamber

12 with a valve 16 that can be actuated by air pressure, which is attached below the air chamber. The valve includes a valve block 34 with a central passage 36 in which a solid, with a central opening and a ring of throughflow openings 4 © provided transverse plate 38 is attached.

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The upper part of the valve block 34 extends through a central opening in the base of the air vessel 12 and. Is designed as a valve seat 35, which is preferably flat with a trained valve plate 42 cooperates. The valve head 42 is provided with a valve stem 44 connected through the central guide opening in the transverse plate 38 extends downward and is surrounded by a sleeve 46 which serves as a spacer between the valve disk 42 and a sealing washer 48, which by means of j

a nut 50 j seated on the valve stem that is designed as a simple steel bolt

is pressed against the lower end of the sleeve 46 · j

A spring 52 is located between the cross plate 38 and the sealing ring 48, so that the Valve disc is held against its seat. ;

The lower end of the valve stem 44 is seated

in an opening in a disc-shaped cavity actuating member 54, which within a with ab- j

rounded edge 58 provided, - extended part ΐ

56 of the passage 36 is arranged. "·:

The bottom of the valve

blocks 34 is through an elastic membrane 60,!

covered, which is held in place by means of a closure plate 62 and a central, ' bore 64 provided with an internal thread

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sits, which is used to connect to the pipeline. On the side of the block 34 is a larger one Bore 66 attached, which is used for connection to the inlet pipe 10.

It goes without saying that an air * ä

pressure, which is introduced through the bore 64, brings the membrane 60 into a position indicated by dashed lines Lines is indicated. In this position, the membrane presses the actuator 54 and so that the valve plate 42 upwards, so that a connection between the air chamber 12 and the Outlet opening 66 arises. When the air pressure is relieved through bore 64, it will Valve closed again by spring 52. It is from the description and the drawings easily seen that the valve constructions

is extremely simple and robust.

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Such a valve can of course also be used for other purposes than a normal gate valve to be used. In this pail the air chamber 12 would be reduced in size, so as to form an inlet chamber for the valve. On the other hand, the invention is not limited to that only the valve shown in the drawings is used. ':

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196037A

It is within the scope of the invention

possible, a gradually increasing outflow of compressed air through the dosing chamber also with others than to achieve the means described above. For example, a valve in the inlet pipe 10 may be provided, the valve disk of which is pushed away from its valve seat by the air pressure of the air chamber is, wherein the movement of the valve plate is damped by a known damping device. Included the control valve itself may be the type that * opens instantly. It is also possible to use a solenoid valve to use, whose valve disc is either mechanical (hydraulic) damping or electrical Control opens dampened.

-Patent claims-

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Claims (5)

Ϊ96037Τ Claims tterungsvorrichtung for intermittently blowing η fish feed amounts over the surface of a fish farm pond or Fiechbrutbaeeine with a feed container having an outlet to a metering chamber, to the g an inlet pipe for the intermittent feeding of compressed air and a Aueblasrohr are connected, by an amount of feed contained in the metering chamber can be blown out through the compressed air, the inlet pipe being connected to an air chamber via a remote control valve, characterized in that a shut-off device for the air is provided in connection with the inlet pipe (10) or the control valve (16), which are opened in this way attenuated can that the initial air flow through the metering chamber (6) gradually increases. 2. Feeding device according to claim 1, characterized. that the control valve (16) by a control pressure medium - before- I preferably by compressed air - can be actuated, that of a closed control chamber with a movable edge part (54) is fed, which is in such a way with a valve part (42) in operative connection that this valve part (42) in the direction is lifted from its valve seat (35) on the pressure side when sufficient pressure is supplied to the control chamber. 3. Feeding device according to claim 1 or 2, characterized in that that in the inlet for compressed air in the air chamber (12) a one-way valve (32) is arranged. 4 · «Feeding device according to one of claims 1 to 3, wherein in a manner known per se the air chambers of several " ¹² ~ BATH Feeding devices vpn compressed air is fed to a common compressor, characterized in that the control fluid inlets for all control chambers! of the control valves (16) are commonly connected to the compressor (22) through a main control valve (26) and the difference between the effective areas of the movable wall part (54) and the valve part (4-2) in each valve is such the difference the actuating pressure in the supply line (14) for compressed air to the air tanks and in the supply line (18) to the control valves (16) is adapted so that the control valves open depending on the opening of the main control valve (26). 5. Feeding device according to one of claims 1 to 4 »marked eichnet. ,, that the control valve (16) in the _{Weiiet iit 0} represented by ti® drawings and the description 6 »Method of feeding fish by means of a feeding device according to claim 1, characterized in that the control valve (16) is actuated in such a way that the initial air flow through the metering chamber (6) gradually increases when the control valve (16) is opened. 009827/0108