NL8500851A - METHOD AND APPARATUS FOR PREPARING LIQUIDS FOR FERTILIZING PLANTS FOR HOUSEHOLD OR HOBBY GARDENS - Google Patents

Abstract

1. Process for the preparation of watering water for household or hobby gardeners, in which the watering water is impregnated with CO2 and fertilizer is dissolved in the impregnated water, characterized in that the water is taken from a normal mains supply pipe at the pressure and the temperature of the pipe and is first conveyed into a control zone in which, by means of the present pressure of the water flowing in, a closing and pressure regulating valve of a CO2 pressure gas source is adjusted, and in that the water is conveyed from the control zone to the entrance end of an impregnation zone which is in the form of an elongated, straight, flow route and in which at least two shoulder-like cross-sectional widenings of the flow route, which widenings are at a distance from each other, the pressure of the water is abruptly lowered and the areas of the water-flow from lowered pressure to the drawing in of CO2 gas into the water stream are brought into contact with a distribution zone via thin, open bores corresponding to the width of the shoulder and being situated in the cross-sectional plane connecting to the annular shoulder, into which distribution zone is conveyed the CO2 gas with the gas pressure controlled by the water inlet pressure, and in that the water is brought into contact with the liquid or solid fertilizers directly after the contact areas with the CO2 distribution zone.

Description

· »---» VO 7125

WerEtoijze and equipment for preparing liquids for fertilizing plants for household or hobby gardeners.

The invention relates to a method and an apparatus for preparing liquids for fertilizing plants for household or hobby gardeners.

It is known that plant health, plant growth and insect resistance can be substantially improved when the plants are watered, which contains a high proportion of CO 2 introduced by very fine impregnation and a correspondingly high proportion of . Plants and equipment have been developed to provide horticultural businesses, open ground cultures and reforestation areas or the like with water thus prepared (see German magazine Der Spiegel no. 47/1982, pp. 99 to 101, resp. 61 to 63).

Furthermore, casting systems and fertilizing systems for household and hobby gardens are known, with which plants or beds 15 are watered for a long time and to the required extent, respectively. the necessary fertilizers can be supplied to the plants via fertilizer rods or liquid manure.

The object of the invention is to provide a method and an apparatus for applying that method, with which the housewife resp. the hobby gardener is supplied in a simple and inexpensive manner with irrigation water taken from the normal supply line network in any desired quantity, which is optimally enriched and mixed with fertilizers as well as with CO2 and H2 CO2.

This object is achieved according to the invention by a method for preparing liquids for watering plants with fertilizers for household and hobby gardeners, which is characterized in that water from the usual supply line with the temperature prevailing in the supply line and the temperature in the supply line. supply line is deprived of prevailing pressure and is first used for the pressure-dependent control of the supply of CO2 from a pressure source to at least one contact zone with the absorbed water and then this contact zone is supplied in a flow in which one or more places of the flow path through the contact zone, the pressure in relation to the 85 0 0 8 5 1 -2- decrease pressure of the water from the supply line is reduced continuously and water and CC 2 gas are simultaneously brought into contact and liquid manure is added to the contact zone supply and the supply quantity per unit time is controlled depending on the withdrawal pressure of the water.

The device to be used for this is characterized by a control room, which can be connected to a usual local supply line, where the temperature and pressure in question in an open connection are between 1 bar and 7 bar of the water in the supply line 10; through a CO 2 pressure vessel with a normally closed exhaust and pressure reducing valve; by a pressure-dependent control device for controlling the exhaust and reducing valve in a pressure-dependent open position, which control device is connectable to the control chamber; through a flow channel which can be connected on the entrance side of the control chamber and which has in the flow direction at least two consecutively arranged channel parts with collar-shaped widening of the flow cross-section, which extensions are connected with a CO 2 gas chamber, which are connected via the outlet - a pressure reducing valve can be fed and can be loaded by a supply of liquid manure, which communicates with the flow channel and can be loaded by the suction pressure in the widened channel section and / or with a transport pressure corresponding to the pressure in the control chamber.

With this method or the device present therefor it is possible that, if necessary, the device connected to a conventional supply line can only be put into operation in the usual manner by turning on the water tap. All other functions, namely opening the gas pressure bottle for CO2, controlling the gas pressure at a pressure adapted to the respective pressure of the water in the supply line, optimally impregnating the water with CO2 and optimally enriching the water with H2C03 likewise as the admixture of fertilizers to an extent adapted to the pressure of the water in the supply line are taken over by the device. The same applies to taking back all these functions only by closing the water tap.

A standard casting hose can be connected to the device.

However, the device itself can also be used directly for filling 8500851

* -J

-3- serve cans or similar vessels.

The installation as well as the use of the device are extremely simple. The mixing of the different constituents in the water can be optimally adjusted, so that the housewife or hobby gardener does not have to apply any special attention. By blocking the supply line for the fertilizer comb dock, if necessary, the irrigation water can only be enriched with CO ^ and H ^ CO ^.

The pouring liquid made available in this manner unusually promotes the growth, flowering, yield and resistance of the plants to insects or infestation.

The water pressure in the supply line varies widely, for example between 1 bar and 7 bar. In any case, the direct pressure control of the deprived water in front of the outlet and reducing valve of the gas pressure vessel ensures an accurate and simple automatic control of the supply pressure of the CO 2 gas to the contact zone with the water.

In this way a fully automatic and accurate and reliable control of the supply pressure for the CO 2 gas is obtained. At the same time, an exceptionally high operating comfort is obtained.

This also applies to the control of the fertilizer supply.

For this purpose, the relevant pressure of the water taken up from the supply line can optionally be used as transport pressure, and this indirectly, so that the feed pressure of the CC 2 gas from the head space or the outside of a flexible reservoir for liquid is controlled by the water pressure. allow manure to act. The pressure-dependent supply of the fertilizer into the contact zone can, however, also be effected by underpressure, as it occurs in the individual injection nozzles of the contact zone, although this also depends on the pressure of the water in the supply line.

The invention is further elucidated in the shirt of schematic drawings in two exemplary embodiments. In the drawing: Fig. 1 shows in vertical section a device according to the invention in a first embodiment and Fig. 2 shows a similar representation, but of a part of a modified embodiment.

8500851 -4- In the embodiment according to Fig. 1, an appliance block 1 is provided, which has a connection 2 for connecting to a conventional water supply pipe. Such a supply line connection is normally equipped with a shut-off valve. A control chamber 3 is present in the device block 1, into which the water enters from the pipe. The inlet pressure of the water can vary within wide limits, depending on the respective supply line, for example between 1 bar and 7 bar. Likewise, the respective temperature of the water taken away can also be very different.

The respective pressure of the water in the control chamber 3 acts on a diaphragm 4, which acts via an operating tappet 8 directly on the movable member 7 of the outlet and reducing valve of a CO 2 pressure vessel 6, for example a gas cylinder. The pressure vessel 6 equipped with this valve need only be screwed in a sealing manner to the normalized connection of the apparatus block 1 present for that purpose.

Such a valve closes automatically if no control pressure is exerted on the valve member 7 from outside.

Below the membrane 4 is in the device block. 1 there is a gas distribution chamber 5, which is connected via a throttle plate 11 to a gas chamber 10.

A flow channel 13 is furthermore present in the apparatus block 1, the inlet side 14 of which is connected to the control chamber 3 in free flow. The flow channel 13 is preferably straight and elongated and ends at the bottom end on a connection 28. This can be the direct discharge for the pouring liquid, for instance for filling cans or other reservoirs. However, a conventional garden hose or the like can also be connected to the outlet 28.

In a first section, the flow channel 13 has several channel parts, the diameter of which progressively and suddenly increases. These injector nozzle-like parts are indicated by 15a to 15c. In the plane following the collar-shaped widenings, the flow channel has a plurality of connecting openings 17, which are in free flow communication with distribution channels 12, which in turn are connected to the gas chamber 10.

8500851 -t ^ -5-

In another region of the flow channel 13 lying in front of the outlet 28, other such parts 16a, 16b with sudden diameter dilation are provided. Here, too, bores 18 are present in the plane immediately following the dilation collars, which are in free flow communication with distribution channels 5 or connecting channels 19. These connection channels are connected at their lower ends to a range of the flow channel 13 some distance behind the last injector nozzle 16b through bores 20.

In the flow channel 13, from above, centrally and at radial distance from the wall of the flow channel, a supply tube 25 extends, which is connected via a check valve or throttle valve 26 to a fertilizer supply for liquid manure and in the region of a vein the injector nozzles 15a to 16b. In the example shown, the mouth 27 is in the region of the injector mouthpiece 15c.

The described device works as follows:

When there is a need for irrigation water, the tap of the supply line is opened, which is connected to the equipment block 1. The water entering the device block 1 upon opening fills the control chamber 3 and loads the membrane 4 with the respective pressure.

The diaphragm 4, which serves as pressure relief, is designed and dimensioned such that already at a pressure of 1 bar in the control chamber 3, the pressure reducing valve 7 of the pressure vessel 6 opens and CO2 with a reduced pressure corresponding to the pressure in the control chamber 3 can flow into chamber 5. The throttling device 11 ensures that the outflowing CC gas in the flow channel 13 can only be activated when the water from the control chamber 3 has entered the flow channel 13 and fills it in a flowing manner. When the flow channel 13 flows through, a sudden pressure drop in the water flow forms in the individual pressure gauge 30 stages. Due to the lowering pressure, gas is drawn in from the gas chamber 10,12 and efficiently mixed in the water in very finely divided form and avoiding large bubbles. This fine impregnation is repeated with each injector nozzle 15a to 15c. After fine impregnation of the water, fertilizer is fed into the flow channel 13 to the water and intimately mixed with the water.

8500851 -6-

The very fine impregnation and the intimate mixing is further promoted by the downstream injector stages 16a and 16b, because in these ranges a mixing of the mixing liquid entering through the bores 20 in the connecting channels 19 with the mixed liquid flowing in from the injector nozzle 15c takes place. 5 finds. The inlet diameter for fertilizer can be adjusted by throttling through valve 26. The supply pressure of liquid manure can be set directly or indirectly by the respective pressure in the control chamber 3.

A simple adjustment of the volumetric supply of 10 fertilizer per water quantity is achieved by applying the pressure in the gas chamber 10 or 12 sent by the control chamber 3 to the head space of the fertilizer supply or to the outer part of a flexible vessel receiving the supply. allow to act. As a result, a pressure-dependent fertilizer supply, just like the beginning and end of the fertilizer supply, is achieved in direct dependence for opening or closing the tap of the supply line.

The water pressure itself can also be used advantageously for discharging the fertilizer vessel.

However, as shown in Fig. 2, the underpressure prevailing in one or the other of the injector stages 33 can also be used in the flow channel to draw the fertilizer from a storage vessel 38 via the suction line 36 and the riser 39 depending on the pressure, while at the same time suction of the gas via the gas chamber 32,34 takes place.

Instead of causing the fertilizer to be drawn from an injector nozzles 33 serving for the gas mixing, a separate injector stage can also be provided between the injector groups 33 and 35, which serves only for the suction of fertilizer. The suction according to fig. 2 can also be used in connection with the pressure load of the fertilizer supply by the CC> 2 gas pressure in the gas chamber 32,34.

In the embodiment according to Fig. 2, a device block 30 is again provided, which summarizes all essential parts and connections of the device and thus makes possible a particularly simple control.

Contrary to the new method, instead of a liquid fertilizer, a water-soluble solid fertilizer can also be used.

8500851 * -7-

In this case, the apparatus block is designed such that the water flow through the flow channel 13 of Fig. 1 washes off the solid fertilizer and dissolves an amount of fertilizer corresponding to the amount of water.

The valve 7 is practically a simple shut-off valve, which is kept in its blocked position by the internal pressure in the vessel 6.

is becoming. The internal pressure is e.g. 60 bar and can be depending on A

of the temperature.

The surface ratio of sealing surfaces of valve 7 and membrane surface is, for example, about 1:60. The vessel is closed at atmospheric pressure in the device. If the water pressure now acts on the membrane, this transfers the pressure effect to the valve, 60-fold. The valve opens, gas (CO2) flows into the chamber 5, the outflow of which, as already described, is throttled.

With respect to a pressure valve controlled by the pressure spring, in which the spring pressure remains substantially the same, the membrane 4 transmits all fluctuations in the water pressure and thus controls the CO2 supply depending on the water pressure in its fluctuations.

In the case of a small device, it must be taken into account that glass bubbles of too large dimensions are still present when leaving the impregnation system. These gas bladders must be filtered in such a way that they are supplied to the gas impregnation space itself, so that they are not transported to the delivery point. This would therefore mean that large bubbles in the atmosphere escape and can thus be influenced on the efficiency with regard to gas consumption.

This can be prevented by installing a spiral, but better by installing a meandering system, which runs perpendicular to the system, with the highest point ending in the gas space. One or more gas outlets may be provided at this location to evacuate the lighter gas in the upper point so that it can be fed back into the gas space of the injector system while the filtered and finely impregnated water is conveyed to the delivery zone.

8500851

Claims (9)

Method for preparing liquids for fertilizing plants for household or hobby gardeners, characterized in that water is taken from a conventional supply line network with the temperature prevailing in the supply line and the pressure prevailing in the supply line and first of all for the pressure dependent. control for the supply of CO 2 from a pressure source to at least one contact zone with the deprived water and then this contact zone is supplied in a flow, in which at one or more locations of the flow path through the contact zone the pressure relative to the 10 the pressure of the water from the supply line is reduced in a sudden manner and water and CC 2 gas are simultaneously brought into contact and that liquid manure is supplied to the contact zone and the amount added per unit of time is controlled depending on the water's pressure of removal. 2. Device for preparing liquids for metallurgy. watering plants for household and hobby gardeners, characterized by a control room (3), which can be connected to a conventional local supply line (2), in which the open temperature and pressure between 1 bar and 7 bar of the water when open rule in the care management; through a CO2 pressure vessel (6) with a normally closed exhaust and pressure reducing valve (7); by a pressure-dependent control device (4) for controlling the outlet and pressure reducing valve (7) in a pressure-dependent, open position, which control device (4) is connectable to the control chamber (3); 25 by a flow channel (13) connectable at the entrance side to the control chamber (3), which has in the flow direction at least two channel sections (15a ~ 15c) arranged one behind the other with a collar-shaped widening of the flow section, which widenings with the CO 2 - gas chamber (10,12) which can be fed via the outlet and pressure reducing valve (7) 30 and through a supply of liquid manure which is in communication with the flow channel (13) and through the suction pressure in the flared duct section (15a-15c) and / or can be loaded with a transport pressure corresponding to the pressure in the control chamber (3). 8500851 f -9- 3. * Device according to claim 2, not characterized in that the supply line comprises a connectable control and mixing block (1), that the control chamber (3), the pressure-dependent control device (4), the in the form of injector nozzles (15a-15c) has duct parts 5 as well as the connections for the CO2 pressure vessel (6) and the fertilizer supply (25, 26), as well as the outlet or the outlet connection (28) for the tapping point. Device according to claim 2 or 3, characterized in that a diaphragm (4) delimiting the control chamber (3) is provided for direct operation of the exhaust and pressure reducing valve (7). Device according to any one of claims 2 to 4, characterized in that the fertilizer supply can be loaded by the pressure in the CO 2 gas chamber (10, 12) directly via the head space of a storage vessel or indirectly via a flexible vessel receiving the stock. . Device according to any one of claims 2-5, characterized in that a liquid fertilizer supply tube (25) is arranged centrally and firmly in the flow channel (13), in a region behind at least the first injector nozzle (15a-15c ) and has a connection (26) for the fertilizer stock. Device according to one of claims 2 to 4, characterized in that a suction pipe (36) which can be connected to the fertilizer supply (38) emanates from one of the injector nozzles (33). 8. Device according to any one of claims 2-7, characterized in that a flow-throttling device (11) is present in the flow space between the CQ2-chamber (10,12) and the outlet pressure reducing valve (7). Device according to any one of claims 2-8, characterized in that at least one injector nozzle (16a, 16b) in the flow channel (13) for mixing the CC-2 fine impregnated and fertilizer mixed fluid is switched on. 10. Device according to claim 2, characterized in that the fertilizer is present as a solid fertilizer and the device is designed in such a way that the water flowing through the flow times washes away the solid fertilizer supply. 8500851