SU1020510A1 - Water outlet for planting rice - Google Patents

Abstract

CHECK WATERLAY, including the case with an annular weir. connected by nozzles with downstream pools, distinguished by the fact that, in order to automatically adjust the level of water vegetation in the check, it is equipped with a diaphragm valve installed on the connecting pipe of the crutz with the Lower Bearer, and a chamber filled with salt pacTBoprm application. This chamber is installed in a check and is piped to a diaphragm valve. (L ISD o ate

Description

The invention relates to amelio-. Cii and can be used when carrying out polvrv or washing saline lands on checks.

Known check outlet, providing regulation of the water level in the check and including a pipe connecting the upper and lower downstream of the check, in the head of which is installed a corrugated pipe connected to the float C1].

However, this device is very complex and, if installed in a check, does not allow regulating the mineralization of water in it.

Closest to the technical essence 15 to the proposed one is a device for maintaining the water level in irrigation systems, including a housing with an annular spillway, communicating with branch pipes with an upper and lower pool [2].

However, this device also does not provide automatic control of water mineralization.

The purpose of the invention is the automatic control of the level of salinity in the water in the check.

This goal is achieved by the fact that the outlet is equipped with a membrane valve mounted on a pipe connecting the outlet body 30 to the downstream and a chamber filled with saline ”and equipped with a semi-permeable membrane, and this chamber is installed in the check and connected. membrane valve. 35 The drawing shows the proposed outlet.

The check outlet consists of an annular spillway 1 mounted on an elastic volumetric case 2, which is made in the form of concentrically arranged bellows 3 and 4 of different diameters, an inlet head 5, a spillway 6 connecting the upper and lower downstream holes. A limiter 7 is mounted in the inlet head 5.

The cavity of the housing 2 through the pipe 8 communicates with the upper pool, and with the pipe 9th the female pool. · 'A membrane valve consisting of a chamber-50 10 and a membrane 11 and a throttling outlet of the pipe 9 is rigidly connected to the pipe 9. 10 through a pipe 12 is connected to a mineralization sensor, consisting of a chamber 13 with a semipermeable membrane 14. The cavities of the chambers 10 and 13 and the pipe 12 are filled with saline solution 15 of a certain concentration.

The semi-permeable membrane 14 has the ability to pass water molecules, but impermeable to substances dissolved in water.

VNIIPI Order 3856/26 '' --- ~ of that, the cavity of the body 2 with the lower pool through 16 with 17 mounted on it.

Except communicates the nozzle valve

The outlet works as follows.

The concentration of the saline solution 15 filling the cavities of the chambers 10 and 13 and the pipe 12 is set so that its osmotic pressure equals the osmotic pressure of the water (aqueous solution) of the upstream (rice check). During mineralization, the water in the check is lower than the specified one; its osmotic pressure is lower than the osmotic pressure of solution 15, which ensures that water molecules enter the chamber cavity 13 through the membrane 14 and the 11 ”membrane closes the outlet of the nozzle 9. When the valve 17 is closed, the water entering the body cavity 2 through pipe 8, stretches it. As a result, the top of the annular spillway 1 is located above the water horizon in the check. Water discharge to the downstream does not occur.

With an increase in salinity, the water in the check relative to the set one, its osmotic pressure is higher than the osmotic pressure of solution 15. Due to the forces of osmosis, water molecules are filtered from the chamber 13 through the membrane 14 into the check, which leads to the downward deflection of the membrane 11 and, accordingly, drain water from the cavity of the body 2 into the downstream. And since the cross section of the pipe 9 is larger than the cross section of the pipe 8, the outflow of water from the housing 2 will prevail over the influx of water into it. This will lower the ring spill 1 below the water level in the check and drain it into the downstream.

'When fresh water enters the check, its mineralization in the check decreases and when the specified water outlet is reached, the water stops draining into the downstream according to the described scheme. If it is necessary to drain the water from the check during mineralization less than the specified value, open valve 17.

With a suitably selected diameter of the pipe 16, the outflow of water through it exceeds the inflow of water into the housing 2 through the pipe 8. This leads to a reduction in the housing 2 and the discharge of water into the downstream.

If necessary, to prevent the drainage of water from the check with mineralization greater than the specified one, it is necessary to block the pipe 9.

Thus, the use of a check outlet with a regulator of the level of mineralization allows you to automatically maintain the salinity of water in the checks within the optimal level for plants.

t'rage 673 Subscription —I ----- _; ---------- 40

Branch of PPP Patent, Uzhgorod, Project 4,

Claims (1)

CHECK OUTLET, including a housing with an annular spillway. communicating with pipes with upper and lower concretes, characterized in that, for the purpose of automatic. regulating the level of mineralization of water in the check, it is equipped with a membrane valve installed on the pipe connecting the body to the Downstream, and a chamber filled with salt solution, equipped with a semipermeable membrane, and this chamber is installed in the check and connected by a pipe to the membrane valve.