An adaptive drip irrigation pressure regulating valve

Abstract

The present invention discloses an adaptive drip irrigation pressure regulating valve, which comprises a valve pipe part, a ball valve part and a control part; the valve pipe part includes an input pipe section, a ball valve installation pipe section, an output pipe section, a pressure guiding pipe section and a support pipe section; the ball valve part includes a ball valve body and a valve rod fixedly extending in the radial direction of the ball valve body; the control part includes a piston, a resilient wire and a stress spring. The piston is fitted and installed in the pressure guiding pipe section. The resilient wire is wound and installed on the valve rod, and one end of the resilient wire is fixedly connected to the valve rod and the other end is fixedly connected to the piston. The stress spring is sleeved and installed on the valve rod, and the top end of the stress spring is fixedly installed and connected to the valve rod, and the bottom end is fixedly installed and connected to the support pipe section. This adaptive drip irrigation pressure regulating valve can actively and adaptively adjust the actual drip irrigation pressure to the set range of the drip irrigation rated pressure, can achieve precise adjustment while ensuring the normal service life of the drip irrigation hose, and is particularly suitable for drip irrigation operations.

Description

Technical Field

[0001] The present invention relates to a pressure regulating valve, specifically an adaptive drip irrigation pressure regulating valve applied to drip irrigation operations, belonging to the technical field of drip irrigation. Background Art

[0002] Drip irrigation is an irrigation method that, according to the water requirements of crops, through a pipeline system and emitters installed on the lateral pipes, slowly and evenly drips water and the water and nutrients required by the crops drop by drop into the soil in the root zone of the crops. Drip irrigation requires a low working pressure, does not damage the soil structure, and the water, fertilizer, air, and heat inside the soil are often kept in good conditions suitable for crop growth. The evaporation loss is small, there is no surface runoff, and there is almost no deep leakage. Drip irrigation has a higher water-saving and yield-increasing effect compared to sprinkler irrigation. At the same time, fertilization can be combined to increase the fertilizer efficiency by more than double, and it is applicable to fruit trees, vegetables, cash crops, and greenhouse irrigation.

[0003] The drip irrigation water pressure is usually 0.05 - 0.1 Mpa. Excessive pressure is likely to cause the drip irrigation tape to rupture. The existing drip irrigation pressure regulation methods usually achieve drip irrigation pressure regulation through a drip irrigation pressure regulating valve set on the drip irrigation pipeline. The drip irrigation pressure regulating valve is the main component to ensure the drip irrigation quality, and its pressure regulating characteristics are directly related to the operation of the drip irrigation system and the crop yield and quality. The existing regulation method of the drip irrigation pressure regulating valve is usually through the way of pressure gauge feedback + manual regulation, that is, manually adjust the opening of the drip irrigation pressure regulating valve according to the reading of the pressure gauge. When there is no pressure gauge, it can be judged from the operation of the drip irrigation hose. If the drip irrigation hose is approximately circular and the water sound is not loud, it can be considered that the pressure is appropriate. If the drip irrigation hose is stretched too tightly and the water sound is too loud, it means that the pressure is too high and should be adjusted. This traditional passive regulation method cannot achieve adaptive regulation, which is not only time-consuming and laborious, but also the pressure regulation is inaccurate, and further affects the normal service life of the drip irrigation hose. Summary of the Invention

[0004] Aiming at the above problems, the present invention provides an adaptive drip irrigation pressure regulating valve, which can actively and adaptively regulate the actual drip irrigation pressure to the set range of the drip irrigation rated pressure, can achieve precise regulation while ensuring the normal service life of the drip irrigation hose, and is especially suitable for drip irrigation operations.

[0005] To achieve the above object, the adaptive drip irrigation pressure regulating valve of the present invention includes a valve pipe part, a ball valve part, and a control part;

[0006] The valve pipe part includes an input pipe section, a ball valve installation pipe section, an output pipe section, a pressure guiding pipe section and a support pipe section. The input pipe section, the ball valve installation pipe section and the output pipe section are coaxially arranged in sequence from back to front. The inner surface of the ball valve installation pipe section is a spherical structure that is in communication with the input pipe section and the output pipe section. The support pipe section that penetrates and extends in the radial direction of the ball valve installation pipe section is fixedly arranged on the ball valve installation pipe section. The support pipe section is perpendicular to the input pipe section, and the central axis of the support pipe section passes through the center of the spherical structure of the ball valve installation pipe section. One end of the pressure guiding pipe section parallel to the output pipe section is connected to the output pipe section in a penetrating manner, and the other end is connected to the support pipe section in a penetrating manner;

[0007] The ball valve part includes a ball valve body and a valve stem fixedly extending in the radial direction of the ball valve body. The ball valve body that cooperates with the spherical structure of the ball valve installation pipe section is installed in the ball valve installation pipe section in a cooperating manner. The valve port of the ball valve body is arranged to penetrate in the front-back direction, and the valve stem is arranged in the support pipe section;

[0008] The control part includes a piston, a resilient wire and a stress spring; the piston that is arranged to cooperate with the inner diameter of the pressure guiding pipe section is installed in the pressure guiding pipe section in a cooperating manner; the resilient wire is wound around the valve stem, and one end of the resilient wire is fixedly connected to the valve stem and the other end is fixedly connected to the piston; the stress spring is sleeved on the valve stem, and the top end of the stress spring is fixedly installed and connected to the valve stem, and the bottom end is fixedly installed and connected to the support pipe section.

[0009] As a further improvement scheme of the present invention, the bottom end of the stress spring is fixedly connected to a slider. The slider is installed in the support pipe section in a sliding fit manner, and a slider position adjusting component that extends to the outside of the support pipe section is arranged on the slider. The slider position adjusting component is installed and connected to the support pipe section through a guiding and positioning mechanism.

[0010] As a further improvement scheme of the present invention, the stress spring is located below the resilient wire.

[0011] As a further improvement scheme of the present invention, a bottom sealing plate is arranged at the bottom end of the support pipe section.

[0012] As a further improvement scheme of the present invention, a guiding and limiting mechanism arranged along the circumferential direction is further arranged between the ball valve body and the ball valve installation pipe section.

[0013] As a further improvement scheme of the present invention, the resilient wire is wound around the valve stem for at least one turn.

[0014] Compared with the prior art, when the self - adaptive drip irrigation pressure regulating valve is installed on the drip irrigation pipeline for use, when the output water pressure of the output pipe section is within the set range of the drip irrigation rated pressure, the valve orifice of the ball valve body is in a normally open state. The water pressure acts on the piston through the pressure - guiding pipe section, and the piston drives the resilient steel wire to generate a torsional force F1 for the valve stem to rotate. The stress spring generates a torsional force F2 that hinders the rotation of the valve stem. When the output water pressure of the output pipe section is within the set range of the drip irrigation rated pressure, the valve orifice of the ball valve body is in communication with the input pipe section and the output pipe section in the front - rear direction, and F1 and F2 are in a balanced state. When the output water pressure of the output pipe section increases, F1 > F2, then the valve stem rotates, and the valve orifice of the ball valve body is misaligned with the input pipe section and the output pipe section, increasing the flow resistance until the output water pressure of the output pipe section decreases to within the set range of the drip irrigation rated pressure and F1 and F2 are in a balanced state again, achieving dynamic self - adaptive adjustment. It can ensure that the output water pressure of the output pipe section is always within the set range of the drip irrigation rated pressure, can achieve precise adjustment while ensuring the normal service life of the drip irrigation hose, and is particularly suitable for drip irrigation operations. Brief Description of the Drawings

[0015] Figure 1 is a three - dimensional structure schematic diagram of the present invention;

[0016] Figure 2 is Figure 1 a perspective view of

[0017] Figure 3 is an installation diagram of the ball valve part and the control part of the present invention.

[0018] In the figure: 1. Valve pipe part, 11. Input pipe section, 12. Ball valve installation pipe section, 13. Output pipe section, 14. Pressure - guiding pipe section, 15. Support pipe section, 2. Ball valve part, 21. Ball valve body, 22. Valve stem, 3. Control part, 31. Piston, 32. Resilient steel wire, 33. Stress spring, 34. Slide block, 35. Slide - block position adjusting component. Detailed Embodiment

[0019] The following further describes the present invention with reference to the drawings (hereinafter described with the direction of the pressure water flow as the front).

[0020] The self - adaptive drip irrigation pressure regulating valve includes a valve pipe part 1, a ball valve part 2 and a control part 3.

[0021] As Figure 1As shown in the figure, the valve pipe part 1 includes an input pipe section 11, a ball valve installation pipe section 12, an output pipe section 13, a pressure guiding pipe section 14 and a support pipe section 15. The input pipe section 11, the ball valve installation pipe section 12 and the output pipe section 13 are coaxially arranged in sequence from back to front. The inner surface of the ball valve installation pipe section 12 is a spherical structure that communicates with the input pipe section 11 and the output pipe section 13. The support pipe section 15 that extends through in the radial direction of the ball valve installation pipe section 12 is fixedly arranged on the ball valve installation pipe section 12. The support pipe section 15 is perpendicular to the input pipe section 11, and the central axis of the support pipe section 15 passes through the center of the spherical structure of the ball valve installation pipe section 12. One end of the pressure guiding pipe section 14 parallel to the output pipe section 13 is connected to the output pipe section 13 in a penetrating manner, and the other end is connected to the support pipe section 15 in a penetrating manner.

[0022] As Figure 2 , Figure 3 shown in the figure, the ball valve part 2 includes a ball valve body 21 and a valve stem 22 that extends fixedly in the radial direction of the ball valve body 21. The ball valve body 21 that cooperates with the spherical structure of the ball valve installation pipe section 12 is installed in the ball valve installation pipe section 12 in a matching manner. The valve port of the ball valve body 21 is arranged to penetrate in the front-back direction, and the valve port matches the inner diameters of the input pipe section 11 and the output pipe section 13. The valve stem 22 is arranged in the support pipe section 15.

[0023] The control part 3 includes a piston 31, a resilient wire 32 and a stress spring 33; the piston 31 that is arranged to match the inner diameter of the pressure guiding pipe section 14 is installed in the pressure guiding pipe section 14 in a matching manner; the resilient wire 32 is wound around the valve stem 22, and one end of the resilient wire 32 is fixedly connected to the valve stem 22 and the other end is fixedly connected to the piston 31; the stress spring 33 is sleeved on the valve stem 22, and the top end of the stress spring 33 is fixedly installed and connected to the valve stem 22, and the bottom end is fixedly installed and connected to the support pipe section 15.

[0024] When this adaptive drip irrigation pressure regulating valve is installed and used on a drip irrigation pipeline, appropriate resilient wire 32 and stress spring 33 are selected according to the set range of the drip irrigation rated pressure, so that when the output water pressure of the output pipe section 13 is within the set range of the drip irrigation rated pressure, the valve port of the ball valve body 21 is in an open state all the time. That is, taking the resilient wire 32 wound around the valve stem 22 in the counterclockwise direction as an example, as Figure 3As shown in the figure, the water pressure acts on the piston 31 through the pressure guiding pipe section 14. The piston 31 drives the resilient steel wire 32 to generate a counterclockwise torsional force F1 on the valve stem 22, while the stress spring 33 generates a torsional force F2 that hinders the counterclockwise rotation of the valve stem 22. When the output water pressure of the output pipe section 13 is within the set range of the drip irrigation rated pressure, the valve orifice of the spherical valve body 21 communicates with the input pipe section 11 and the output pipe section 13 in the front-rear direction, and F1 and F2 are in a balanced state. When the output water pressure of the output pipe section 13 increases, F1 > F2, then the valve stem 22 rotates counterclockwise, and the valve orifice of the spherical valve body 21 is misaligned with the input pipe section 11 and the output pipe section 13, causing the flow resistance to increase until the output water pressure of the output pipe section 13 decreases to within the set range of the drip irrigation rated pressure, and F1 and F2 are in a balanced state again, realizing dynamic adaptive adjustment and ensuring that the output water pressure of the output pipe section 13 is always within the set range of the drip irrigation rated pressure.

[0025] In order to facilitate fine-tuning of the set range of the drip irrigation rated pressure, as a further improvement scheme of the present invention, the bottom end of the stress spring 33 is fixedly connected to the slider 34. The slider 34 is slidably fitted and installed in the support pipe section 15, and a slider position adjustment component 35 extending outside the support pipe section 15 is provided on the slider 34. The slider position adjustment component 35 is installed and connected to the support pipe section 15 through a guiding and positioning mechanism. The guiding and positioning mechanism can be a matching threaded connection structure (the slider position adjustment component 35 is an adjustment bolt structure), or other guiding and positioning structures such as a matching positioning hole and positioning pin structure (the slider position adjustment component 35 is a positioning pin structure). The sliding direction of the slider 34 can be along the axial direction of the support pipe section 15 or along the circumferential direction of the support pipe section 15. By adjusting the slider position adjustment component 35, the position of the slider 34 in the support pipe section 15 can be adjusted, and further, the stress magnitude of the stress spring 33 can be adjusted, thereby realizing fine-tuning of the set range of the drip irrigation rated pressure. To facilitate the installation of the slider 34, the stress spring 33 can be located below the resilient steel wire 32. To facilitate the installation of the slider position adjustment component 35 along the axial direction of the support pipe section 15, a bottom sealing plate can be provided at the bottom end of the support pipe section 15.

[0026] In order to limit the rotation angle of the spherical valve body 21 and ensure that the valve stem 22 is coaxially positioned and arranged in the support pipe section 15, as a further improvement scheme of the present invention, the rotation direction of the spherical valve body 21 is arranged along the circumferential direction of the support pipe section 15. A guiding and limiting mechanism arranged along the rotation direction is further provided between the spherical valve body 21 and the ball valve installation pipe section 12. The guiding and limiting mechanism can be a guiding and limiting groove provided on the spherical valve body 21 and a guiding and limiting protrusion fixedly arranged on the inner surface of the ball valve installation pipe section 12 in cooperation, or a guiding and limiting groove provided on the inner surface of the ball valve installation pipe section 12 and a guiding and limiting protrusion fixedly arranged on the spherical valve body 21 in cooperation.

[0027] In order to ensure that the resilient wire 32 can stably provide the rotational torque capable of driving the valve stem 22 to rotate, as a further improvement solution of the present invention, the resilient wire 32 is wound around the valve stem 22 at least once.

Claims

1. An adaptive drip irrigation pressure regulating valve, comprising a valve pipe part (1), a ball valve part (2) and a control part (3); characterized in that, The valve pipe part (1) includes an input pipe section (11), a ball valve installation pipe section (12), an output pipe section (13), a pressure guiding pipe section (14) and a support pipe section (15). The input pipe section (11), the ball valve installation pipe section (12) and the output pipe section (13) are coaxially arranged in sequence from back to front. The inner surface of the ball valve installation pipe section (12) is a spherical structure that is in communication with the input pipe section (11) and the output pipe section (13). The support pipe section (15) that penetrates and extends in the radial direction of the ball valve installation pipe section (12) is fixedly arranged on the ball valve installation pipe section (12). The support pipe section (15) is perpendicular to the input pipe section (11), and the central axis of the support pipe section (15) passes through the center of the spherical structure of the ball valve installation pipe section (12). One end of the pressure guiding pipe section (14) arranged parallel to the output pipe section (13) is connected to the output pipe section (13) in a penetrating manner, and the other end is connected to the support pipe section (15) in a penetrating manner; The ball valve part (2) includes a ball valve body (21) and a valve rod (22) fixedly extending in the radial direction of the ball valve body (21). The ball valve body (21) that cooperates with the spherical structure of the ball valve installation pipe section (12) is installed in the ball valve installation pipe section (12) in a mating manner. The valve port of the ball valve body (21) is arranged to penetrate in the front-back direction, and the valve rod (22) is arranged in the support pipe section (15); The control part (3) includes a piston (31), a resilient steel wire (32) and a stress spring (33); the piston (31) that is arranged to match the inner diameter of the pressure guiding pipe section (14) is installed in the pressure guiding pipe section (14) in a mating manner; the resilient steel wire (32) is wound around the valve rod (22), and one end of the resilient steel wire (32) is fixedly connected to the valve rod (22), and the other end is fixedly connected to the piston (31); the stress spring (33) is sleeved on the valve rod (22), and the top end of the stress spring (33) is fixedly installed and connected to the valve rod (22), and the bottom end is fixedly installed and connected to the support pipe section (15).

2. The adaptive drip irrigation pressure regulating valve according to claim 1, characterized in that The bottom end of the stress spring (33) is fixedly connected to a slider (34). The slider (34) is installed in the support pipe section (15) in a sliding fit manner, and a slider position adjusting component (35) that extends to the outside of the support pipe section (15) is provided on the slider (34). The slider position adjusting component (35) is installed and connected to the support pipe section (15) through a guiding and positioning mechanism.

3. The adaptive drip irrigation pressure regulating valve according to claim 2, wherein The stress spring (33) is located below the resilient steel wire (32).

4. The adaptive drip irrigation pressure regulating valve according to claim 2, characterized in that, A bottom sealing plate is provided at the bottom end of the support pipe section (15).

5. The adaptive drip irrigation pressure regulating valve according to any one of claims 1 to 4, characterized in that A guiding and limiting mechanism arranged along the circumferential direction is further provided between the ball valve body (21) and the ball valve installation pipe section (12).

6. The adaptive drip irrigation pressure regulating valve according to any one of claims 1 to 4, characterized in that, The resilient steel wire (32) is wound around the valve rod (22) for at least one turn.

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