KR102256529B1 - Valve for Irrigation systems - Google Patents

Abstract

The present invention relates to a valve for an irrigation system, which has a structure for uniformly supplying water to crops regardless of differences in a distance or altitude between a water storage or a pump and the crops. According to the present invention, the valve for an irrigation system is installed in each of branch pipes connected to a main pipe connected to the water storage or the pump for supplying the water to the crops and comprises: a first body having a first water passage; a second body having a second water passage connected to the first water passage; and a pressure compensation type valve body positioned in an inner space formed in the first body and the second body when the first body and the second body are connected and deformed by pressure of fluid supplied through the first water passage to change an amount of the water supplied to the second water passage.

Description

Valve for Irrigation systems

The present invention relates to a valve for an irrigation system, and more specifically, by adopting a pressure compensation structure in an agricultural irrigation system, it is possible to irrigate a certain amount as possible regardless of the pressure in which the fluid is introduced, such as the altitude at which the pipe is installed It relates to a valve for an irrigation system.

The irrigation system is a facility that supplies water and liquid fertilizer when cultivating plants or crops in greenhouses or open fields. It is a facility that properly supplies the necessary moisture for plants or crops so that the growth can be done well.

The irrigation methods include hose irrigation, drip irrigation, fountain irrigation, sprinkling irrigation, mist irrigation, furrow irrigation, and underground irrigation. Hose irrigation is a method of supplying water using a hose, and drip irrigation is an irrigation method in which a small hole is made in a plastic pipe or line so that a small amount of water is discharged. Fractional irrigation is a method of irrigation by spraying water into a tube, sprinkling irrigation is a method of irrigation using a nozzle, and mist irrigation is a method of irrigation by making water into a fine spray.

These irrigation facilities usually supply water or liquid fertilizers to rubber hoses or pipes, and these rubber hoses or pipes are provided with a dropper or nozzle according to the irrigation method at predetermined intervals (for example, 20 cm in accordance with the planting interval of crops). Lights are installed. A dropper or nozzle supplies water or liquid fertilizer to crops or plants at a predetermined rate.

A typical irrigation system is shown in FIG. 1.

The irrigation system includes a main pipe (main pipe) connected to a water reservoir or pump, and a plurality of branch pipes (branch pipe) connected to the main pipe to supply water to crops. Each branch pipe is provided with a valve. Manual valves are usually installed in such valves, and solenoid type valves are sometimes installed in places where automation is required.

The manual valve used in this irrigation system is shown in FIG. 2.

However, the irrigation system is installed in hilly areas with slopes such as hills in addition to flat lands. Due to the difference in water pressure due to the difference in height from the water reservoir or pump to the final fluid discharge place, there is a significant amount of water supplied to each customer. There is a difference. A large amount of water is discharged at high pressure to the portion close to the water reservoir or pump and in the lowlands, whereas a small amount of water is discharged at low pressure to the portion far from the water reservoir or pump and located in the highlands, which contributes to the growth of crops. There is a problem that causes a significant difference.

The present invention is to solve the problems of the prior art described above through a valve, irrespective of the altitude difference, etc., using a kind of pressure compensation valve body, the valve for an irrigation system having a structure capable of supplying water as uniformly as possible within a possible range Is to provide.

In order to solve the above problems, the present invention provides a valve for an irrigation system installed in each of a plurality of branch pipes connected to a main pipe, comprising: a first body connected to the branch pipe and having a first channel through which fluid passes; A second body fastened to the first body and having a second water passage communicating with the first water passage; And a valve body that is located in an internal space formed in the first body and the second body when the first body and the second body are fastened, and is deformed by the pressure of the fluid supplied through the first channel, wherein the The valve body has a cup shape, and has a side surface, a protrusion protruding outward from the upper side of the side surface, and a bottom surface at the lower side of the side surface, and the second body is caught by the protrusion and supports the valve body, and the first Support; And arranged so as to be spaced apart from the bottom surface of the valve body at a predetermined distance from the inside of the first support body around the second channel, and when the valve body is deformed by the pressure of the fluid, the bottom surface of the valve body can be supported. It includes a second support formed of a divided cylindrical body, and the fluid supplied from the first channel is applied to the inside of the valve body, and the fluid is a first formed between the divided cylindrical bodies of the first support as the outside of the valve body. It provides a valve for an irrigation system flowing into a second channel through the support gap and the second support gap formed between the divided cylindrical body of the second support.

The second body includes a first support formed of a divided cylindrical body to accommodate the valve body and a second channel from the inside of the first support body, and when the valve body is deformed by the pressure of the fluid, the valve body is It is preferable to include a second support that can be supported and formed of a divided cylindrical body.

The valve body has a cup shape, and the pressure of the fluid supplied from the first channel is applied to the inside of the cup shape, and the side of the cup-shaped valve body is inclined to decrease in cross-sectional size toward the bottom surface, and the first support is also the valve body. It is preferable that it is inclined corresponding to the side shape of. In addition, a valve for supplying and blocking fluid may be installed in the first body.

The valve for an irrigation system of the present invention can discharge a constant flow rate as much as possible within a possible range, regardless of altitude, etc. when water is supplied from a water reservoir or a pump.

When the water pressure applied to the pressure-compensated valve body is high, the water supply passage becomes narrow due to its deformation, and when the water pressure applied to the pressure-compensated valve body is low due to high altitude, the size of the water supply passage is maintained. As a result, there is an effect of being able to supply water and the like to some extent, regardless of the pressure according to the difference in height or distance to the crop.

However, the effect of the present invention is not limited to such a literary description, and includes everything that a person skilled in the art can infer through the present invention.

1 is a circuit diagram showing a conventional irrigation system.
2 is a photograph of a conventional valve used in an irrigation system.
3 is a perspective view of a valve for an irrigation system according to the present invention.
4 is an exploded perspective view of a valve for an irrigation system according to the present invention.
5 is a cross-sectional view of a valve for an irrigation system according to the present invention.
6 is a perspective view of a second valve body for an irrigation system according to the present invention.
7 is an exploded perspective view of a second valve body for an irrigation system according to the present invention.
8 is a cross-sectional view of a second valve body for an irrigation system according to the present invention.
9 is a cross-sectional view of an operating state of the valve for an irrigation system according to the present invention.
10 and 11 are enlarged cross-sectional views of an operating state of a valve for an irrigation system according to the present invention.

An embodiment of the present invention will be described with reference to the accompanying drawings. The examples are for easy explanation of the present invention, and the present invention is not limited thereto. The terms in this specification are for explaining an embodiment, and terms such as include or have means that a configuration or the like exists.

3 is a perspective view of a valve for an irrigation system according to an embodiment of the present invention, and FIG. 4 is an exploded perspective view.

The valve 100 for the irrigation system is installed in each of a plurality of branch pipes (branch pipes) connected to a main pipe (main pipe) connected to a water reservoir or a pump, as in the related art, in order to supply water to agricultural crops.

The valve 100 for the irrigation system includes a first body 200, a second body 300, a valve body 400 installed between the first body 200 and the second body 300, and the first body ( It includes a valve 500 for supplying and shutting off fluid to 200).

The first body 200 has a first channel 201 through which fluid passes, and the second body 300 has a second channel 301 communicating with the first channel 201. The fluid flowing into the first channel 201 is discharged through the second channel 301.

A female screw is formed in the first body 200 and a male screw 310 is formed in the second body 300 so that the first body 200 and the second body 300 may be fastened to each other. When the first body 200 and the second body 300 are fastened, an inner space is formed in the first body 200 and the second body 300, where the valve body 400 is installed.

When the male screw of the second body 300 is screwed with the female screw of the first body 200, an O-ring may be installed to prevent leakage therebetween. In addition, a rubber pipe (not shown) for supplying water to the crop is connected to the second body 300. In addition, a valve 500 for supplying and blocking water, etc. may be provided in the first body 200. Water can be supplied or shut off by rotating the handle.

Meanwhile, a fixing part 350 is formed in the middle part in the longitudinal direction of the second body 200 so that the first body 200 and the second body 300 can be easily fastened and separated, and the fixing part 350 is attached to the fixing part 350. The fixed protrusion 351 may be formed. When fastening and separating the first body 200 and the second body 300, the fixing part 350 serves as a handle of the second body 300, and in particular, the fixing protrusion 351 further facilitates fastening and separation. You can do it easily.

In addition, the first body 200 and the second body 300 are formed of a synthetic resin plastic material. Since it can be used in the field, and water is used as a fluid, a synthetic resin material is preferred.

5 is a cross-sectional view of a valve for an irrigation system of the present invention, and the present invention will be further described using this.

When the first body 200 and the second body 300 are fastened, an inner space is formed therebetween, and a pressure compensating valve body 400 is provided in the inner space. The valve body 400 is made of a material that is deformed by the water pressure of water supplied through the first channel 201 of the first body 200 when the supply and shut-off valve 500 is opened, for example, urethane silicone. .

As can be seen from the drawing, the valve body 400 is formed in a U-shape, that is, a kind of cup shape, a side surface 410, a protrusion protruding outward like a curl used in the top of a paper cup on the upper side of the side surface 410 420 and a bottom surface 430 under the side surface 410. Water introduced through the first channel 201 is supplied into the cup-shaped valve body 400 to apply pressure to the bottom surface 430.

6 to 9 are perspective views and cross-sectional views of the second body of the valve for the irrigation system of the present invention, which will be described in more detail.

The valve body 400 is positioned between the first body 200 and the second body 300 while in contact with the second body 300. The second body 300 includes a cylindrical body divided to accommodate the valve body 400, preferably a first support body 330 formed of a cylindrical body divided into three or four equal parts. Is formed. The valve body 400 is supported by hooking the protrusion 420 formed on the valve body 400 to the upper portion of the first support body 330.

In addition, the valve body 400 is arranged from the inside of the first support body 330 around the second channel 301 of the second body 300, and when the valve body 400 is deformed by the pressure of the fluid. A second support 340 formed of a divided cylindrical body, preferably divided into equal parts, and more preferably divided into three or four equal parts, is formed.

When a considerable pressure is applied to the valve body 400, the bottom surface 430 of the valve body 400 is deformed to the second support 340 and is supported by the upper portion of the second support 340.

In this way, the upper portion of the valve body 400 is supported by the first support body 330, and the lower portion of the valve body 400 maintains the distance t2 with the second support body 340, and the pressure is applied to a certain extent. By deforming and coming into contact with the second support 340, the portion through which the fluid passes is narrowed.

The first support 330 and the second support 340 are formed of a cylindrical body divided into 3 or 4 equal parts, that is, 3 or 4 arc-shaped portions. A plurality of gaps 331 and 341 having a predetermined width are formed between each arc-shaped portion, and these gaps 331 and 341 function as a channel through which water can pass.

In addition, the first support 330 and the second support 340 are radially identical in positions where the gaps 331 and 341 are formed, so that the liquid flowing into the gap 331 of the first support 330 is the second It may be directly introduced into the gap 341 of the support 340.

On the other hand, the valve body 400 is tapered so that the side is inclined in a direction in which the cross section decreases toward the bottom surface 430. The first support body 330 may also have a taper 332 formed in the same manner as the side surface of the valve body 400 while supporting the valve body 400.

This shape of the valve body 400 can reduce the cross section so that the pressure of the acting fluid is concentrated on the bottom surface 430, and the valve body 400 can be easily deformed. The first support body 330 may support the valve body 400 and guide the deformation of the valve body 400.

In addition, the valve body 400 may have a thick protrusion 440 formed on a portion of the bottom surface 430. The bottom surface 430 is a portion in which the fluid pressure is concentrated, and a protrusion 440 is placed in a central portion thereof to reinforce the bottom surface 430. However, the protrusion 440 is formed on a part of the bottom surface 430 rather than the entire bottom surface 430, and is to prevent this because it makes it difficult to deform the valve body 400.

9 to 11 are cross-sectional views showing an operating state of a valve for an irrigation system, and an operating state of the present valve will be described using this.

In the valve 100 for an irrigation system according to the present invention, when the first body 200 and the second body 300 are fastened, the first support 330 formed at one end of the second body 300 is The valve body 400 is accommodated in the interior of 200 and is located in a space formed between the first body 200 and the second body 300 while being supported by the first support body 330, the valve body ( The upper part of the 400 is spaced between the inner surface of the first body 200 and the space t1, and the lower part is spaced between the second support 340 and the space t2 formed on the second body 300.

Water introduced through the first channel 201 of the first body 200 is first supplied to the valve body 400. Pressure is applied to the bottom surface 430 of the valve body 400, and then water passes through the gap t1 between the upper part of the valve body 400 and the inner surface of the first body 200, while the first body 200 ) And the first support 330.

Then, it passes through the gap 331 formed in the first support 330, and passes through the gap 341 through the second support 340 and the gap t2 formed in the second body 300 and the second support 330 Thus, it heads to the second channel 301 of the second body 300.

When the pressure of water increases, the valve body 400 deforms, and further deforms toward the second support body 300 by the water pressure. The second support 340 and the gap t2 formed on the bottom surface 430 of the valve body 400 and the second body 300 are narrowed, so that the flow path through which the fluid passes is narrowed, and when the pressure of the fluid increases The valve body 400 is further deformed to contact the second support body 340 and the gap t2 disappears.

As such, the valve body 400 functions as a pressure compensation type to adjust the opening degree according to the pressure, and through this, the flow rate constantly flows within a possible range. At low pressure, there is no or only partial deformation, and at high pressure, the area through which the fluid passes is controlled by controlling the area through which the fluid passes, so that a constant flow rate can flow as much as possible while minimizing the effect of or related to the overall pressure.

As described above, the valve 100 for an irrigation system according to the present invention can supply a certain amount of water to crops regardless of pressure according to altitude, etc., and can evenly grow crops.

Table 1 is a table showing the results of the amount of water supplied to crops by the valve 100 for the irrigation system according to the present invention at different altitudes, that is, on a slope. Three lines were installed according to the slope. As can be seen from Table 1, the amount of water per minute (liter/min) partially increased as it moved from the top to the bottom of the slope, but it can be seen that the difference is not so great by adopting the present invention.

slope Line 1 Line 2 Line 3 Difference in amount of water (line 1 → line 3, 4m) 7% 0.991 0.992 1.018 2.65% 15% 0.986 1.001 1.020 3.33% 30% 0.982 1.010 1.022 3.91%

The present invention is not limited by the disclosed embodiments and the accompanying drawings, and may be variously modified by a person skilled in the art within the scope not departing from the technical spirit of the present invention. In addition, the technical idea described in the embodiment of the present invention may be implemented independently, or two or more may be implemented in combination with each other.

100: irrigation system valve 200: first body 201: first waterway
300: second body 301: second channel 310: male thread
320: rubber hose fastening part 330: first support
331: first support gap 332: side of the first support
340: second support 341: second support gap
350: fixed part 351: fixed protrusion 400: valve body
410: side 420: protrusion 430: bottom surface
440: bottom protrusion 500: supply and shut-off valve

Claims (5)

In the valve 100 for an irrigation system installed in each of a plurality of branch pipes connected to the main pipe,
A first body 200 connected to the branch pipe and having a first channel 201 through which fluid passes; A second body 300 coupled to the first body and having a second water passage 301 communicating with the first water passage 201; And located in the inner space formed in the first body 200 and the second body 300 when the first body 200 and the second body 300 are fastened, and supplied through the first water channel 201 It includes a valve body 400 that is deformed by the pressure of the fluid,
The valve body 400 has a cup shape, and has a side surface 410, a protrusion 420 protruding outwardly from an upper portion of the side surface 410, and a bottom surface 430 under the side surface 410,
The second body 300 supports the valve body 400 by being caught on the protrusion 420 and includes a first support body 330 formed of a divided cylindrical body; And arranged so as to be spaced apart from the bottom surface 430 of the valve body 400 at a predetermined distance t2 around the second channel 301 from the inside of the first support body 330, and the valve body 400 is It can support the bottom surface 430 of the valve body 400 when it is deformed by the pressure of the fluid, and includes a second support body 340 formed of a divided cylindrical body,
The fluid supplied from the first channel 201 is applied to the inside of the valve body 400, and the fluid is formed between the divided cylindrical bodies of the first support body 330 as the outside of the valve body 400. A valve for an irrigation system, characterized in that it flows into the second channel 301 through the support gap 331 and the second support gap 341 formed between the divided cylindrical body of the second support 340. delete delete The method according to claim 1,
A valve for an irrigation system, characterized in that a valve 500 for supplying and blocking fluid is installed in the first body 200. The method according to claim 1,
The side surface 410 of the cup-shaped valve body is inclined toward the bottom surface 430 so that the cross-sectional size is reduced, and the first support body 330 is also inclined corresponding to the side shape of the valve body 400. Valves for irrigation systems.

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