CN86210146U

CN86210146U - Automatic hydraulic valve for field irrigation

Info

Publication number: CN86210146U
Application number: CN 86210146
Authority: CN
Inventors: 徐苏明; 潘甫生; 沈正南; 缪益兴; 王建清; 顾祖恩
Original assignee: JIANGYIN IRRIGATION AND DRAINAGE MANAGEMENT OFFICE JIANGSU PROV
Current assignee: JIANGYIN IRRIGATION AND DRAINAGE MANAGEMENT OFFICE JIANGSU PROV
Priority date: 1986-12-12
Filing date: 1986-12-12
Publication date: 1988-02-10

Abstract

The utility model relates to an automatic hydraulic valve for field irrigation used for automatically controlling field water level and preventing the backward flow of water in field without needing energy resource. The main principle of the automatic hydraulic valve for field irrigation is that the buoyancy of floats is used for driving the valve to open or close for obtaining the aim of automatically and quantificationally supplying water. The utility model has the advantages of low cost, high reliability and easy popularization.

Description

Automatic hydraulic valve for field irrigation

Field irrigation water supply automatic valve technology under the present invention.

Existing field irrigation control automatically is to adopt air-flow, jet, and electronic control technique obtains.This type of automatic valve not only needs the energy, and all needs equipment such as baroque water supply equipment, aqueduct, electrical apparatus element, and cost is higher, the difficult penetration and promotion in rural area.

The present invention is intended to design a kind of energy that need not, and is simple in structure, stable and reliable for performance, energy quantitative water supply, the field irrigation waterpower self-acting valve of anti-back flow.

The present invention is by holder part, and valve opening and closing mechanism and water pressure regulator are formed.Holder part comprises framework, kicker baffle and cover plate, kicker baffle is positioned at the framework bosom, it is divided into two chambers to framework, top is the control room, the bottom is an intake chamber, the hole at cover plate and kicker baffle center helps central shaft to do vertical up-or-down movement, valve opening and closing mechanism comprises central shaft, main float, pay float, last valve and lower valve, they combine as a whole, main float on the central shaft is in the control room, pay float, last valve and lower valve are positioned at intake chamber, the channel water level is higher than the field face a potential difference, when under the ditch water flow when intake pipe is gone into intake chamber, the pressure of water and the buoyancy of paying float are a bit larger tham and equal valve opening and closing mechanism gradually from gravity and central shaft and cover plate, during frictional force, last lower valve rises and also keeps transient equiliblium between kicker baffle, because last valve and lower valve all do not cover valve port, promptly valve opening supplies water.After the field face has water, the control room inlet parallel with the field face begins water inlet, water level will be contour together with field face water level in the control room, because field face water level constantly raises, lower valve raise together on main float drove under buoyancy function, when the field face reaches predetermined water level, lower valve just covers valve port, and valve port is closed and stopped to supply water, and the effect of main float is the on-off action that the upper and lower valve of lifting is finished self-acting valve, regulate the height of main float on central shaft in addition, but the required water level in preset field.The effect of paying float be with its buoyancy partial offset valve opening and closing mechanism from gravity, prevent that the valve whereabouts from covering valve port.When channel interruption water supply, what intake chamber was interior can force valve decline to cover valve port to launching stress, prevents that effectively field water from flowing backwards.Water pressure regulator is by regulating bolt, spring, guide pipe, spring seat is formed, intake pressure is too big, water can impact lower valve and move upward and cover valve port, and causing supplies water stops, after on the cover board the side adorns a water pressure regulator, when lower valve rises, spring seat can be withstood in the central shaft upper end, has stoped the continuation of lower valve to be risen, and the pressure of spring seat can be according to the size adjustment of intake pressure.

The invention has the advantages that without the energy simple in structure, cost is low, the energy quantifying irrigation had both made channel stop to supply water, and also can prevent the refluence of field water.

Fig. 1 is the inventive embodiments structural representation.

Framework in the present embodiment (2) is the garden cylindricality, cover plate (1), framework (2), kicker baffle (5) all is that concrete is made, a main float (4) and a pair float (11) are hollow bodies, when not having water in the intake pipe (20), valve (8) covers valve port (9) under the action of gravity of valve opening and closing mechanism.When intake pipe (20) supplies water, water pressure and the buoyancy of paying float (11) be a bit larger tham valve opening and closing mechanism from gravity, frictional force between central shaft (7) and cover plate (1), kicker baffle (5) and the downward spring force on the water-level regulator, valve opening and closing mechanism rises overally.When above-mentioned all power make a concerted effort to be zero the time, last valve (8) and lower valve (10) are in transient equiliblium temporarily.Because last valve (8) and lower valve (10) all maintain a certain distance with valve port, so the water in the channel is through outlet (6) irrigated farmland of valve port (9) and intake chamber.Along with the farmland water level raises, the water in farmland enters control room (18) through control room water inlet (16), water level in the control room (18) will maintain an equal level with the farmland water level, and main float (4) drives valve opening and closing mechanism because of control room (18) water level rises and rises overally.This moment main float (4) and pair float (11) buoyancy, water pressure greater than valve opening and closing mechanism from gravity, the frictional force between central shaft (7) and cover plate (1), kicker baffle (5), the spring force in the water pressure regulator.When reaching the farmland predetermined water level, lower valve (10) just in time covers valve port (9), stops to supply water.When running into channel interruption water supply, control room (18) force from gravity to launching stress and valve opening and closing mechanism that valve opening and closing mechanism is whole to descend, bottom discharge orifice (21) the beginning draining of control room (18) wall, main float (4) descends, last valve (8) covers valve port (9), makes self-acting valve be in closed condition, to prevent the farmland aqueous reflux, drawing on the central shaft that main float (4) is located has level scale (3), can up-down adjustment according to the farmland water level.Adjusting bolt (12) on the water pressure regulator of cover plate (1) top can be according to intake pressure size adjustment spring pressure.

The self-acting valve of present embodiment per hour can supply water 25 cubic metres, if when the channel water level was higher than 5～30 centimetres of farmland water levels, farmland depth of water regulation range was 0～10 centimetre, can satisfy the requirement of general field irrigation, this self-acting valve cost is extremely low, and the rural area easily implements to promote the use.

Claims

1, a kind of field irrigation waterpower self-acting valve, it is characterized in that having a framework (2), a cover plate (1), kicker baffle (5) is divided into control room, top (18) and bottom intake chamber (19) to framework (2), adorn a guide pipe (14) on the center hole of cover plate (1), guide pipe (14) top is equipped with and is regulated bolt (12), the middle part of guide pipe (14) is regulated between bolt (12) and the spring seat (15) spring (13) is housed, the center hole of the bottom of guide pipe (14) inner spring seat (15) and dividing plate (5) is equipped with the central shaft (7) that runs through control room (18) and intake chamber (19) and can move up and down, be equipped with on the central shaft (7) and be positioned at control room (18) but the main float (4) of up-down adjustment and be positioned at the last valve (8) on intake chamber (19) valve port top, be positioned at the lower valve (10) of intake chamber (19) valve port bottom and pay float (11), the bottom of control room (18) wall has and is used for the discharge orifice (21) that main float (4) resets.

2, field irrigation waterpower self-acting valve according to claim 1 is characterized in that last the drawing of central shaft (7) that main float (4) is located has water level groove (3).

3, according to claim 1,2 described field irrigation waterpower self-acting valves, it is characterized in that framework (2), cover plate (1), kicker baffle (5) becomes with the concrete pouring.