KR102663675B1 - Hose for farming - Google Patents

Abstract

The present invention provides an agricultural hose that has excellent durability, prevents bursting, and has excellent cold resistance, so that it can be used for agricultural purposes outdoors in cold weather.

Description

Agricultural hose{HOSE FOR FARMING}

The present invention relates to a cold-resistant hose used to transport high-pressure gas or fluid to a predetermined location. More specifically, it has excellent durability, preventing the hose from bursting, and provides excellent cold resistance, so that it can be used as an agricultural hose outdoors in cold weather. This is about agricultural hoses that can be used.

In general, a hose is a pipe used to transport fluids such as water, gas, or flowable soil, and can be made of a material with excellent flexibility so that it can be freely bent.

Among these hoses, in the case of high-pressure hoses, there was a problem that the outer skin of the hose was peeled off due to vibration transmitted from the pump, and there was a problem that the lifespan of the hose was shortened due to elongation of the hose when used.

In order to solve this problem, some structures have been disclosed in which the outer peripheral surface of the hose is knitted with cloth tape or wire. However, the above structure is not only inefficient but also difficult to apply to high-pressure hoses rather than low-pressure hoses due to cost and structural problems, and even this was only applied to tubes rather than hoses.

Meanwhile, in the case of hoses used for agricultural purposes, most work is done outdoors without a screen, and they are frequently used to supply water even in the cold winter, so hoses can be used even at low temperatures while suppressing damage caused by UV rays from the sun. It is necessary to prevent it from freezing.

Domestic Patent Publication No. 10-1479855 (announced on January 9, 2015)

The main purpose of the present invention is to provide an agricultural hose that can minimize damage caused by UV rays of the sun and has excellent cold resistance while increasing the durability of the high-pressure hose to prevent the hose from bursting.

According to one aspect of the present invention, the endothelium in the form of a tube; It includes a first yarn wound continuously in a spiral shape at an angle of 105 to 110° on the outer peripheral surface of the inner skin, and a second yarn wound continuously overlapping with the first yarn in a direction crossing the first yarn. And, a fabric interwoven layer formed in a mesh shape on the outer peripheral surface of the inner skin; And a tube-shaped shell formed on the outer peripheral surface of the inner shell to cover the fabric layer. The inner shell includes a resin, 45 to 53 parts by weight of a first plasticizer, 13.315 to 16.273 parts by weight of a second plasticizer, 5.391 to 6.589 parts by weight of a stabilizer, 17.993 to 21.991 parts by weight of a filler, 0.537 parts by weight, based on 100 parts by weight of the resin. to 0.657 parts by weight of an antioxidant, 0.348 to 0.426 parts by weight of a UV stabilizer, and 0.711 to 0.869 parts by weight of a pigment, the shell comprising a resin, 45 to 55 parts by weight of a first plasticizer, 13.315 to 16.273 parts by weight, based on 100 parts by weight of the resin. parts by weight of a secondary plasticizer, 2.151 to 2.629 parts by weight of a stabilizer, 0.348 to 0.426 parts by weight of an antioxidant, 0.348 to 0.426 parts by weight of a UV stabilizer, and 0.045 to 0.055 parts by weight of a pigment.

According to another feature of the present invention, the first and second yarns of the fabric interwoven layer may be polyester reinforcing yarns.

According to another feature of the present invention, the fabric interwoven layer may be formed by weaving or braiding the first and second yarns in an over and under pattern.

According to the above embodiments of the present invention, it is possible to reduce the vibration transmitted from the pump and have excellent durability, thereby preventing hose bursting and improving its lifespan, minimizing damage caused by UV rays of the sun, and providing excellent cold resistance. This prevents it from freezing even at low temperatures, making it easy to use outdoors in the cold winter.

Accordingly, the agricultural hose of one embodiment is suitable for use as an agricultural hose in which most work is performed outdoors without a screen and is frequently used to supply water even in the cold winter.

Figure 1 is a perspective view showing a hose according to an embodiment of the present invention.
Figure 2 is a cross-sectional view of Figure 1.
Figure 3 is an actual photograph of a hose according to an embodiment of the present invention.
Figure 4 is a physical property table showing the pressure length change rate and pressure outer diameter change rate for the hose of one embodiment.

Hereinafter, preferred embodiments of the present invention will be described with reference to the attached drawings. However, the embodiments of the present invention may be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below.

Examples of the present invention are provided to more completely explain the present invention to those with average knowledge in the relevant technical field. Accordingly, the shapes and sizes of elements in the drawings may be exaggerated for clearer explanation, and elements indicated by the same symbol in the drawings are the same elements. In addition, the same symbols are used throughout the drawings for parts that perform similar functions and actions.

In addition, 'including' a certain element throughout the specification means that other elements may be further included rather than excluding other elements, unless specifically stated to the contrary.

Figure 1 is a perspective view showing a hose according to an embodiment of the present invention, Figure 2 is a cross-sectional view of Figure 1, and Figure 3 is a physical photograph of a hose according to an embodiment of the present invention.

Referring to Figures 1 to 3, the hose 100 according to an embodiment of the present invention includes an inner skin 10, a fabric interwoven layer 20, and an outer skin 20.

The inner skin 10 is formed in a tube shape and may be made of a material containing rubber or resin to ensure flexibility.

Preferably, the inner skin 10 of one embodiment includes a resin, 45 to 53 parts by weight of a first plasticizer, 13.315 to 16.273 parts by weight of a second plasticizer, 5.391 to 6.589 parts by weight of a stabilizer, and 17.993 to 17.993 parts by weight, based on 100 parts by weight of the resin. It may include 21.991 parts by weight of filler, 0.537 to 0.657 parts by weight of antioxidant, 0.348 to 0.426 parts by weight of UV stabilizer, and 0.711 to 0.869 parts by weight of pigment.

More preferably, the inner skin 10 of one embodiment contains 25.96 parts by weight of the first plasticizer, 7.68 parts by weight of the second plasticizer, 3.11 parts by weight of the stabilizer, 10.38 parts by weight of the filler, and 0.31 parts by weight of the antioxidant, based on 51.92 parts by weight of the resin. parts, 0.2 parts by weight of UV stabilizer, and 0.41 parts by weight of pigment.

The resin (LS130) is a homopolymer manufactured by suspension polymerization, and has an apparent specific gravity of 0.49 g/cm3, a degree of polymerization of 1250, a volatile matter of 0.1%, an average particle diameter of 135㎛, and a particle size of 135㎛. The distribution (#45) is 0%, the particle size distribution (#200) is 1.8%, the plasticizer absorption is 29%, the thermal stability is 72 minutes (min), and the resin whiteness is 96WI. In particular, the plasticizer absorption amount is high and the absorption rate is fast, allowing for improved soft mixability.

In addition, the resin (LS130) has uniform and spherical PVC particles, and the size of the PVC particles is adjusted to suit soft processing using a plasticizer. In addition, the resin (LS130) has vivid colors, excellent transparency, and has excellent color expression performance during colored processing.

The plasticizer enters between the polymers and plays a role in preventing the polymers from strongly adhering to each other. At this time, an empty space is created, so it is easy to make a fairly soft plastic, thereby improving processability and providing flexibility to the hose. The plasticizer may be dioctyl adipate or trioctyl trimellitate, and the second plasticizer may be dioctyl adipate.

The stabilizer may be a substance containing zinc stearate, magnesium aluminum hydroxycarbonate, and calcium stearate, and may serve to prevent PVC from being decomposed by heat and oxidation.

The filler may be CaCO ₃ and may serve to increase the density of the inner skin and improve its physical properties.

The antioxidant may be tetrakis(methylene(3,5-di-tertbutyl-4-hydroxyhydrocinamic acid))methane, and it inhibits the oxidation reaction in the air that leads to a decrease in product quality, thereby improving stability. It plays a role in increasing the validity period.

The UV stabilizer may be 2-Hydroxy-4-(Octyloxy)Benzophenone, which selectively absorbs ultraviolet rays from solar rays and converts them into heat energy or decomposes into ultraviolet rays. By destroying the free radicals generated, it prevents the plastic from decomposing.

This inner skin 10 can be formed by applying heat of 160 to 180° C. to a material prepared in a mold prepared according to the standard, and then discharging the material in the form of a tube under the pressure of an extruder.

The endothelium 10 according to one embodiment includes various types of additives described above, and in particular, dioctyl adipate, a plasticizer, and 2-hydroxy-4-(octyloxy)benzophenone, a UV stabilizer. (Octyloxy)Benzophenone), it can have excellent cold resistance and durability.

The fabric interwoven layer 20 is intended to provide durability that can withstand the internal pressure required for the inner skin 10, and prevents the inner skin 10 from stretching in the longitudinal direction to prevent the hose 100 from swelling or bursting in one direction. It can be prevented effectively.

In addition, the fabric interwoven layer 20 includes first yarns 21 and second yarns 22 wound in directions crossing each other on the outer peripheral surface of the inner skin 10, and a mesh network on the outer peripheral surface of the inner skin 10. is formed in the form

The first yarn 21 is wound continuously in a spiral shape on the outer peripheral surface of the inner skin 10 at an angle of 105 to 110°.

The second yarn 22 is continuously wound spirally on the outer peripheral surface of the inner skin 10 in a direction crossing the first yarn 21, overlapping with the first yarn 21.

Additionally, the fabric interwoven layer 20 may be formed by weaving or braiding the first and second yarns 21 and 22 in an over and under pattern. At this time, the first and second yarns 21 and 22 can be arranged in the same over and under pattern or, if necessary, in different over and under patterns.

In addition, the first and second yarns 21 and 22 may be, for example, thin filament yarns, preferably polyester reinforcing yarns, and the present invention is not limited to specific yarns.

Additionally, the first and second yarns 21 and 22 may be composed of a ply yarn made by plying two or more strands of basic yarn.

In addition, the first and second yarns 21 and 22 can be changed in various ways, such as being made of the same thickness or having different thicknesses if necessary, and the present invention is not limited thereto.

The outer skin 30 is formed to cover the fabric interweaving layer 20 on the outer peripheral surface of the inner skin 10 and is formed in a tube shape. Additionally, the outer shell 30 may be made of a material containing rubber or resin to ensure flexibility.

Preferably, the outer shell 30 of one embodiment includes a resin, 45 to 55 parts by weight of a first plasticizer, 13.315 to 16.273 parts by weight of a second plasticizer, 2.151 to 2.629 parts by weight of a stabilizer, and 0.348 to 0.426 parts by weight, based on 100 parts by weight of the resin. It may include an antioxidant, 0.348 to 0.426 parts by weight of a UV stabilizer, and 0.045 to 0.055 parts by weight of a pigment.

More preferably, the outer shell 30 of one embodiment contains 59.43 parts by weight of resin, 29.71 parts by weight of first plasticizer, 8.79 parts by weight of second plasticizer, 1.42 parts by weight of stabilizer, 0.23 part by weight of antioxidant, 0.23 part by weight of UV stabilizer, and 0.03 part by weight of pigment. Includes weight.

The resin (LS130) can be a homopolymer manufactured by suspension polymerization, and the first plasticizer is dioctyl adipate or trioctyl trimellitate. trimellitate) plasticizer can be optionally used, the second plasticizer can be dioctyl adipate, the stabilizer is a Ca-Zn-based powder stabilizer that can provide excellent heat resistance, and the antioxidant is It may be tetrakis(methylene(3,5-di-tertbutyl-4-hydroxyhydrocinamic acid))methane, and the UV stabilizer is 2-hydroxy-4-(octyloxy)benzophenone (2-Hydroxy- It may be 4-(Octyloxy)Benzophenone).

The shell 30 according to one embodiment includes various types of additives described above, and in particular, dioctyl adipate, a plasticizer, and 2-hydroxy-4-(octyloxy)benzophenone, a UV stabilizer. (Octyloxy)Benzophenone), it can have excellent cold resistance and durability.

Figure 4 is a physical property table for an agricultural hose according to an embodiment. At this time, the inner skin contains 15 parts by weight of dioctyl adipate, and the outer skin contains 15 parts by weight of dioctyl adipate and 300 g of UV stabilizer. Additionally, the inner diameter of the hose is 8.5 mm, the outer diameter is 14.5 mm, and the hood is 3.2 mm.

As can be seen in Figure 4, in the hose of one embodiment, the pressure length change rate was -2.46% at 80 bar and -1.48% when the pressure was raised to 150 bar, and the pressure outer diameter change rate was 12.06% at 80 bar and when raised to 150 bar. It was found to be 14.48%, which shows that the hose has excellent durability.

Therefore, the agricultural hose 100 constructed in this way has excellent cold resistance, durability, and UV blocking performance, so it is less damaged even when used outdoors, and does not easily freeze even at low temperatures, so it can be appropriately used outdoors even on cold days. Therefore, it is very suitable for use as an agricultural hose.

The present invention is not limited by the above-described embodiments and attached drawings, but is intended to be limited by the appended claims. Accordingly, various forms of substitution, modification, and change may be made by those skilled in the art without departing from the technical spirit of the present invention as set forth in the claims, and this also falls within the scope of the present invention. something to do.

10: Endothelium
20: Fabric interwoven layer
30: outer shell
21, 22: first and second yarns
100: hose

Claims (7)

tubular endothelium;
It includes a first yarn wound continuously in a spiral shape at an angle of 105 to 110° on the outer peripheral surface of the inner skin, and a second yarn wound continuously overlapping with the first yarn in a direction crossing the first yarn. And, a fabric interwoven layer formed in a mesh shape on the outer peripheral surface of the inner skin; and
A tube-shaped shell formed on the outer peripheral surface of the inner shell to cover the fabric interwoven layer; Including,
The inner skin is composed of a resin, 45 to 53 parts by weight of a first plasticizer, 13.315 to 16.273 parts by weight of a second plasticizer, 5.391 to 6.589 parts by weight of a stabilizer, 17.993 to 21.991 parts by weight of filler, and 0.537 to 0.657 parts by weight, based on 100 parts by weight of the resin. It contains an antioxidant, 0.348 to 0.426 parts by weight of a UV stabilizer and 0.711 to 0.869 parts by weight of a pigment,
The outer shell includes a resin, 45 to 55 parts by weight of a first plasticizer, 13.315 to 16.273 parts by weight of a second plasticizer, 2.151 to 2.629 parts by weight of a stabilizer, 0.348 to 0.426 parts by weight of an antioxidant, and 0.348 to 0.426 parts by weight, based on 100 parts by weight of the resin. 10 parts UV stabilizer and 0.045 to 0.055 parts by weight of a pigment. According to paragraph 1,
The inner skin contains 25.96 parts by weight of the first plasticizer, 7.68 parts by weight of the second plasticizer, 3.11 parts by weight of the stabilizer, 10.38 parts by weight of the filler, 0.31 parts by weight of the antioxidant, 0.2 parts by weight of the UV stabilizer, and 0.41 parts by weight of the pigment. An agricultural hose comprising: According to paragraph 1,
The outer shell contains 29.71 parts by weight of the first plasticizer, 8.79 parts by weight of the second plasticizer, 1.42 parts by weight of the stabilizer, 0.23 parts by weight of the antioxidant, 0.23 parts by weight of the UV stabilizer, and 0.03 parts by weight of the pigment. An agricultural hose. According to paragraph 1,
The inner skin contains dioctyl adipate, a plasticizer, and 2-Hydroxy-4-(Octyloxy)Benzophenone, a UV stabilizer, and has excellent cold resistance and durability. Characterized by agricultural hoses. According to paragraph 1,
The outer shell is,
The resin (LS130) can be a homopolymer manufactured by suspension polymerization.
As the first plasticizer, dioctyl adipate or trioctyl trimellitate plasticizer may be optionally used,
The second plasticizer uses Dioctyl Adipate,
The stabilizer is a Ca-Zn-based powder stabilizer and can provide excellent heat resistance.
The antioxidant may be tetrakis(methylene(3,5-di-tertbutyl-4-hydroxyhydrocinnamic acid))methane,
The UV stabilizer may be 2-Hydroxy-4-(Octyloxy)Benzophenone,
Characterized by excellent cold resistance and durability, including dioctyl adipate, a plasticizer, and 2-Hydroxy-4-(Octyloxy)Benzophenone, a UV stabilizer. Agricultural hose. According to paragraph 1,
An agricultural hose, characterized in that the first and second yarns of the fabric interwoven layer are polyester reinforcing yarns. According to paragraph 1,
The fabric interwoven layer is an agricultural hose, characterized in that the first and second yarns are formed by weaving or braiding in an over and under pattern.