Capillary pressure regulator with stable pressure-regulating performance

Abstract

The invention relates to a capillary pressure regulator with stable pressure-regulating performance. The capillary pressure regulator is characterized by comprising an upstream shell, a downstream shell, a baffle, a flat support, a T-shaped pressure-regulating component and a pressure-regulating spring, wherein the upstream shell comprises a first cylindrical section, a conical diffusion section and a second cylindrical section which are sequentially and integrally arranged; the downstream shell comprises a third cylindrical section and a fourth cylindrical section which are integrally arranged; the third cylindrical section is connected with the second cylindrical section; a plurality of gas ports are formed in the circumferential direction of the third cylindrical section at intervals; the baffle comprises a first rounded body and a cylindrical structure; the middle of the first rounded body is provided with a through cylindrical structure and an impermeable central hole; a plurality of water inlet holes which are communicated with the central hole are formed in the circumferential direction of the cylindrical structure; the first rounded body is arranged in the second cylindrical section; the cylindrical structure stretches into the conical diffusion section; the flat support is arranged in the second cylindrical section; the middle of the flat support is provided with a round hole of which the diameter is the same as that of the central hole of the baffle; the T-shaped pressure-regulating component comprises a second rounded body and a cylinder; the cylinder penetrates through the round hole on the flat tray and the central hole on the first rounded hole; and the pressure-regulating spring is sleeved on the cylinder of the T-shaped pressure-regulating component.

Description

technical field [0001] The invention relates to a pressure regulator in the field of agricultural water-saving irrigation, in particular to a capillary pressure regulator with stable pressure regulating performance. Background technique [0002] The pressure regulator is a device that regulates the pressure in the pipeline in the pressure pipeline irrigation system, and is an important part of the drip irrigation system. Irrigation uniformity is an important factor affecting the performance of the drip irrigation system. However, due to the different distances between the pipeline and the head of the system and the undulations of the terrain, the inlet pressure of different branch pipe inlets and different capillary inlets varies greatly, which leads to field drippers. The water flow is uneven. [0003] In order to effectively control the irrigation uniformity of the drip irrigation system, the existing main technical solutions are pressure regulation and flow regulation. ...

AI Technical Summary

Problems solved by technology

but, Figure 8 The water inlet direction of the inlet flower basket of the pressure regulator shown is the same as the main water flow direction. When the inlet pressure changes, the movement of the pressure regulating component 2 is not sensitive to the adjustment of the water head loss at the inlet flower basket, resulting in the adjustment of the outlet pressure is not obvious, making Its starting pressure is high (generally greater than 15m), and the outlet pressure is unstable

Secondly, Figure 8 The adjustable flow range of the branch pressure regulator shown is generally greater than 5m 3 / h, so it is not suitable for capillary flow (less than 1.5m 3 / h)

Again, capillary pressure regulators are still rare in my country

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