WO2020070263A1

WO2020070263A1 - Pipe and watering system

Info

Publication number: WO2020070263A1
Application number: PCT/EP2019/076856
Authority: WO
Inventors: Rolf SIELING
Original assignee: DEULA-Nienburg GmbH
Priority date: 2018-10-04
Filing date: 2019-10-04
Publication date: 2020-04-09
Also published as: DE102018124494A1

Abstract

The invention relates to a pipe having a pipe wall and an interior space enclosed by the pipe wall. The invention also relates to a watering system having such a pipe and to the use of such a pipe for the watering of the ground. The invention further relates to a method for watering of a ground area and to a method for producing a pipe.

Description

Pipe and irrigation system

The invention relates to a pipe with a pipe wall and an interior enclosed by the pipe wall. The invention also relates to an irrigation system with such a pipe and the use of such a pipe for soil irrigation. The invention also relates to a method for irrigating a ground area and a method for producing a pipe.

Among other things, plastic pipes that are laid in the ground are currently used for soil irrigation. After the plastic pipes have been used for irrigation, they are often left in the ground and, if necessary, shredded using agricultural equipment. Such an approach needs to be improved, at least with regard to environmental protection.

The invention has for its object to provide a more environmentally friendly solution for soil irrigation by means of pipes laid in the ground.

This object is achieved with a pipe of the type mentioned at the outset in that the pipe wall consists at least in part or completely of pressed natural organic material and / or of pressed organo-mineral material. This has the advantage that such pipes, if they are in the ground, are environmentally friendly and can also be left there because after a corresponding phase of use they can disintegrate naturally. In this way, no effort has to be invested in removing the pipes from the ground. A further advantage of the invention is that the pipe itself can already act as a fertilizer source, so that soil fertilization can also take place without additional fertilizers being supplied, or at least fewer fertilizers are required. In an advantageous design, the tube is designed as a flexible, easy-to-use tube that can be easily handled and installed, for example, by one person. It is also advantageous to design the tube wall to be liquid-permeable through the choice of material, so that the tube wall is liquid-permeable without any additional openings or perforations introduced. The tube can therefore advantageously be designed with a permeable or semi-permeable tube wall.

Further advantages of the invention consist in the simple manufacture of the pipe and the simple laying in the ground, the ease of handling and the minimal or nonexistent maintenance effort and a low hydraulic requirement. The invention can be used for every culture, every climate and every period of use of the year.

Depending on the material selection for the material of the tube wall, the tube can be manufactured with or without the addition of an adhesive. According to an advantageous embodiment of the invention, it is provided that the tube wall is formed at least in part from an adhesive, by means of which the pressed natural organic material and / or the pressed organo-mineral material is glued. By adding the adhesive, the connection of the other materials to one another and thus the durability of the pipe can be further improved. The adhesive can e.g. B. also be a natural organic material. The adhesive can also be a mixture of organic and inorganic adhesives.

According to an advantageous embodiment of the invention, it is provided that the adhesive has at least one of the following materials: lignin, casein, cellulose, clay minerals, paste, white glue. This has the advantage that the tube is also environmentally friendly with regard to the adhesive used. The use of ligin has the advantage that it is already a waste in the paper industry and is therefore a resource-saving solution for the provision of the adhesive.

The adhesive can also be a mixture of several of the materials mentioned above. According to an advantageous embodiment of the invention, it is provided that a) the natural organic material has at least one of the following materials: liquid manure, guano, manure, digestate, other natural organic waste produced in agricultural production,

and or

b) the organo-mineral material has at least one of the following materials: artificial fertilizer.

In this way, agricultural residues, which can be problematic in certain regions due to their high quantities, can be recycled in an environmentally friendly manner. For example, it can create added value for excess, separated manure. The material of the tube wall can also be a mixture of several of the previously mentioned materials.

In principle, the tube can be made with any dimensions. According to an advantageous embodiment of the invention, it is provided that the length of the tube is at least ten times as large as the diameter of the tube.

The cross-sectional shape of the tube can in principle be chosen arbitrarily, e.g. B. polygonal such as square, hexagonal or octagonal, both in relation to the outer and in relation to the inner cross-sectional shape. According to an advantageous embodiment of the invention, it is provided that the outer cross-sectional shape and / or the inner cross-sectional shape of the tube is circular.

For example, special connectors can be used to connect two pipes, e.g. B. separate connecting elements, which are manufactured in the same way as the tube described. According to an advantageous embodiment of the invention, it is provided that the tube has a first free end and a second free end at the end remote from the first free end, the first free end having a first coupling element through which the tube is connected to a structural Chen pipe at the second free end can be positively connected liquid-tight. This has the advantage that the pipes are already designed for positive coupling to one another due to their design. Separate connecting elements are then not necessary. This way the tubes can be endless Sequence are put together and an in principle endless pipe arrangement can be created.

At the connection point between the first coupling element of a tube and the second free end of an adjacent structurally identical tube, the plug connection formed in this way can, for example, be additionally closed by an adhesive, for. B. an adhesive made of natural organic material.

According to an advantageous embodiment of the invention, it is provided that the first coupling element is designed as an area with a reduced or enlarged tube cross section, which can be plugged onto the second free end of an identical tube. In this way, the pipes can be plugged in endlessly with little effort.

The above-mentioned object is also achieved by an irrigation system for irrigating a ground area, the irrigation system having a multiplicity of pipes laid in the floor of the ground area, through which water can be led into the ground from a water source, the pipes being predominantly or are formed entirely by pipes of the type described above. The advantages explained above can also be realized with such an irrigation system. In particular, an almost closed irrigation system can be created without loss of nutrient solutions.

For example, the pipes can be laid in several parallel rows in the floor. The distance between the rows can be selected as required, for example at a distance of at least 0.5 meters or at a distance of at least 1 meter.

The above-mentioned object is also achieved by using a pipe of the type explained above for soil irrigation. The advantages explained above can also be realized in this way.

The object mentioned at the outset is also achieved by a method for watering a ground area with the following steps a) laying a large number of pipes of the type explained above in the floor of the ground area,

b) supplying water from a water source into the pipes laid in the floor of the ground area as required.

The advantages explained above can also be realized in this way. It is also desirable if the plants growing in the ground grow with their roots into the pipes laid in the ground. For example, maize or rapeseed can be planted in a double row next to the pipes laid in the ground. For example, planting can take place at a distance of about 7 centimeters from the pipes laid in the ground. Depending on the type of planting, the distances to the pipe can also be selected differently.

According to an advantageous embodiment of the invention it is provided that the pipes remain in the ground after a use phase for irrigation and from there disintegrate naturally and / or by means of agricultural equipment, eg. B. crushed with a disc harrow. The use phase can include, for example, one planting phase of the soil or several planting phases of the soil.

The above-mentioned object is also achieved by a method for producing a tube of the type explained above, with the following steps:

a) supplying natural organic material and / or organo-mineral material to an extruder, the supplied material being pressed before being supplied to the extruder and / or through the extruder,

b) Manufacture of the tube by extrusion of the supplied material through the extruder.

The advantages explained above can also be realized in this way. Commercially available components can be used for the individual steps, such as separation and extrusion. B. a screw separator and an extruder. The supplied natural organic material can be cold separated in the separator. The separator can be connected with stencils, so that pellets are produced as solid portions on the output side of the separator. According to an advantageous embodiment of the invention, the following is provided:

a) separation of solid portions from the natural organic material supplied,

b) feeding the separated solid portions to the extruder.

Then the further processing takes place through the extruder, i.e. the manufacture of the tube by extrusion of the supplied material through the extruder. Here, too, the supplied material can be pressed before being fed to the extruder and / or through the extruder.

According to an advantageous embodiment of the invention, it is provided that the tube emerging from the extruder is dried by heating. This allows the pipe to be produced quickly because the heating enables faster drying.

According to an advantageous embodiment of the invention, it is provided that an adhesive is added to the supplied material and / or the separated solid parts before the extrusion, during the extrusion and / or after the extrusion, in particular before the pipe is dried by heating. The adhesive can improve the durability of the pipe and thus the possible service life.

The invention is explained in more detail below on the basis of exemplary embodiments using drawings.

Show it:

Fig. 1 - a tube and

Fig. 2 - a method of manufacturing a tube.

FIG. 1 shows a tube 1 in a side view and to the right of it in a front view. In the side view is an interior 3 of the tube 1 with dashed lines featured. The tube 1 shown has a tube wall 2 which surrounds the interior 3. The tube 1 has a length L, an outer diameter D and an inner diameter d. The length L is much larger than the outer diameter D, z. B. at least ten times as large.

The tube 1 has a first free end 5 and a second free end 6, which is arranged at the end of the tube 1 remote from the first free end 5. The tube 1 can have, for example, a first coupling element 4 at the first free end 5. In the exemplary embodiment shown, the first coupling element 4 is designed as a section with an enlarged pipe cross section. The inside diameter of the first coupling element 4 is designed in such a way that the first coupling element 4 can be plugged onto a second free end 6 of an identical pipe, i.e. the inside diameter of the first coupling element 4 essentially corresponds to the outside diameter of the tube 1 at the second free end 6.

The tube 1 can also be designed without such a coupling element 4. In this case, separate coupling elements can be used for a series of pipes, z. B. pipe pieces with an inner diameter that corresponds to the outer diameter of the tube 1.

The tube wall 2 consists at least partially or completely of pressed natural organic material and / or of pressed organo-mineral material. The manufacture of such a tube will be described with reference to FIG.

In the exemplary embodiment shown in FIG. 2, a starting material 10 is initially provided for forming the tube wall 2, for example liquid manure is used. In a step 11, the starting material 10 is subjected to a separation process by means of which solid portions of the starting material 10 are separated out. For the separation z. B. a screw separator can be used. The solid portions separated in step 11 are mixed in a supplied adhesive 13 in step 12. This mass of separated solid parts with the adhesive is processed in an extrusion step 14. A commercially available extruder can be used for this. Through the extrusion step 14, the supplied Material is pressed into the tube shape, which emerges from the extruder on the outlet side and is fed to a drying step 15. The drying step 15 can comprise, for example, heating the tube emerging from the extruder. After the heating step 15, the finished solid tube is provided in step 16. This pipe can now be laid in the ground to create an irrigation system. In order to provide the pipe in manageable sizes, a separation step can follow, in which the pipe continuously emerging from the extruder is cut into individual pieces of a certain length, for example using a saw. In order to produce the change in cross-section of the tube required for the shaping of the first coupling element 4 during the extrusion, a variable, adjustable extrusion tool can be used, for example, in which the extrusion cross-section is adjustable. Such extrusion tools have hitherto been used, for example, in the production of plastic pipes, but can also be used for the production of the pipes according to the invention.

Claims

1. Pipe (1) with a pipe wall (2) and an interior (3) enclosed by the pipe wall (2), characterized in that the pipe wall (2) is made, at least in part or completely, of pressed natural organic material and / or made of pressed organo-mineral material.

2. Pipe according to claim 1, characterized in that the tube wall (2) is at least partially formed from an adhesive through which the pressed natural organic material and / or the pressed organo-mineral material is glued.

3. Pipe according to one of the preceding claims, characterized in that the adhesive comprises at least one of the following materials: lignin, paste, white glue.

4. Pipe according to one of the preceding claims, characterized in that

a) the natural organic material has at least one of the following materials: liquid manure, guano, manure, digestate, other natural organic waste produced in agricultural production, and / or

5. Pipe according to one of the preceding claims, characterized in that the length (L) of the tube (1) is at least ten times as large as the diameter (D) of the tube (1).

6. Pipe according to one of the preceding claims, characterized in that the outer cross-sectional shape and / or the inner cross-sectional shape of the tube (1) is circular.

7. Pipe according to one of the preceding claims, characterized in that the tube (1) has a first free end (5) and at the end remote from the first free end (5) has a second free end (6), the first free end (5) has a first coupling element (4), through which the tube (1) can be connected in a form-fitting, liquid-tight manner to an identical tube (1) at its second free end (6).

8. Pipe according to claim 7, characterized in that the first coupling element is designed as a region with a reduced or enlarged pipe cross-section, which can be plugged onto the second free end of an identical pipe (1).

9. Irrigation system for irrigating a soil area, wherein the irrigation system has a plurality of pipes (1) laid in the floor of the soil area, through which water can be guided into the soil from a water source, characterized in that the pipes (1) predominantly or are formed entirely by pipes according to one of claims 1 to 8.

10. Use of a tube (1) according to one of claims 1 to 9 for soil irrigation.

11. Procedure for irrigating a soil area with the following steps:

a) laying a plurality of pipes (1) according to one of claims 1 to 9 in the bottom of the ground area,

b) supplying water from a water source into the pipes (1) laid in the floor of the ground area as required.

12. The method according to claim 11, characterized in that the pipes (1) remain after a use phase for irrigation in the soil and there disintegrate naturally and / or be crushed by means of agricultural implements.

13. A method for producing a tube (1) according to one of claims 1 to 8 with the following steps:

a) feeding natural organic material and / or organo-mineral material to an extruder, the supplied material being pressed before being fed to the extruder and / or through the extruder, b) producing the tube (1) by means of extrusion (14) the material fed through the extruder.

14. The method according to claim 13 with the following steps:

a) separation (11) of solid portions (12) from the natural organic material (10) supplied,

b) feeding the separated solid portions (12) to the extruder.

15. The method according to claim 13 or 14, characterized in that the tube emerging from the extruder (1) is dried by heating (15).

16. The method according to any one of claims 13 to 15, characterized in that the supplied material and / or the separated solid portions (12) before the extrusion (14), during the extrusion (14) and / or after the extrusion (14) , especially before the tube (1) is dried by heating (15), an adhesive (13) is added.