SU847289A1 - Device for regulating water level in rice basins - Google Patents

Description

The invention relates to the construction of devices for regulating the water level in rice fields, widely used in irrigated agriculture, in particular in reclamation, mainly rice irrigation systems.

Known proportional water divider for pressureless water conduits with a slope of more than critical bottom, consisting of inlet and outlet sections, side outlet and dividing wall, in which the inner face of the dividing wall is curved with a concavity towards the side outlet £ 1

The closest in technical essence to the proposed one is a proportional water divider, including inlet and outlet conduits and a partitioning structure with horizontal shutters of £ 2} moving over the years, over the years.

The disadvantages of this device are the impossibility of a sequentially controlled water supply to various lateral outlets using a single device, as well as the need for construction work, which leads to a rise in the cost of irrigation facilities.

The purpose of the invention is the expansion of the scope and increase the speed of the device.

This goal is achieved in that the device containing placed between the inlet and outlet channels connected to the rice paddies, a flat shutter and associated control mechanisms, further comprises an axis vertically mounted in the bottom of the water conduit and a segment guide connected to one end of the shutter, the other end which is movably fixed on the axis, and the control mechanisms are mounted on rice checks and each is made in the form of a housing in which a rack-and-pin type lock is fitted, equipped with a spring, connected by a cable to a float tank, connected by a rubber pipe with a corresponding check. 5

In FIG. 1 shows the proposed device, in plan; in FIG. 2 is a section AA in FIG. 1; in FIG. 3 - node G in FIG. 1.

The device comprises an inlet 10 irrigation channel 1 and an outlet irrigation channel 2 and a segment guide 3 arranged between them with a bolt 4 mounted on one end thereof in the form of a flat shield, the other end of which is movably mounted on an axis 5 installed in the coastal abutments, lateral water outlets 6, through which irrigation water enters rice checks 7, separated by ²⁰ earthen rollers 8. Each irrigation channel in the water outlet is equipped with a control mechanism made in the form of a housing 9 in which springs are installed a latched latch 10 that allows the shutter to rotate freely counterclockwise and prevents the shutter from turning in the opposite direction. The gear 11 using a cable 12 is connected to the float tank 13, which is placed in the chamber 14 and communicated with the rice check with a rubber pipe 15, located on the axis 16, connecting the rice check with the inlet and outlet channels.

The device operates as follows.

After supplying irrigation water to the inlet channel 1, the shutter .4 with a stream of water rotates on the axis 5 to the first (along the stream of water) side outlet 6 and is held by the latch 10 from further movement. Water enters only the first rice check 7. When the thickness of the water layer reaches a predetermined value, the water through the rubber pipe 15 begins to overflow from the rice check into the float tank 13, which, due to the increase in mass, is lowered and discharges through the gear 11 rotated by the cable 12 latch releases the shutter, which moves to the side outlet 6, equipped with a similar lock. The operation continues until the checks are full and water enters the discharge channel 2. The pressure of the water flow prevents the shutter from returning to its original position.

During the growing season of rice, according to the technological regulations, rice checks are periodically drained, for which a layer of water from the checks is dumped into the drainage channel. When this float tank 13 is emptied and the spring extends the latch 10, after which the shutter 4 under the influence of its own weight returns to its original position. After supplying water to the irrigation canal, the water distribution cycle is repeated, rice checks are flooded in automatic mode.

The proposed device provides a reduction in irrigation water and maintenance costs, as well as the prevention of secondary salinization of soils during the initial flooding of crops.

Claims (2)

(54) DEVICE FOR REGULATING WATER LEVEL IN RICE CHECKS The invention relates to the construction of devices for adjusting the water level in rice paddies widely used in irrigated agriculture, in particular in ameliorative, mainly rice irrigation systems. A known proportional divider for free-flow conduits with a bottom inclination greater than critical, consisting of inlet and outlet sections, a lateral outlet and a dividing wall, in which the inner edge of the dividing wall is curved with concavity to the lateral branch of L M The closest in technical essence to the proposed one is a proportional water divider, including supply and discharge water conduits and a blocking structure with gates C that move horizontally in a span 2. The drawbacks of this device are the impossibility of consistently regulating water supply to various side branches using one device, as well as the need for construction work, which leads to higher prices for irrigation facilities. The purpose of the invention is to expand the scope and increase the speed of the device. The goal is achieved by the fact that the device, which contains flat between the supply and discharge channels connected to the rice checks, a flat gate and associated control mechanisms, additionally contains an axis vertically installed in the bottom of the water line and connected to one the end of the shutter, the other end of which is movably fixed on the axis, the control mechanisms being installed on paddy checks and made in the form of a housing. in which a latch-type latch is installed, equipped with a spring connected by a cable with a float tank connected by a rubber tube with a corresponding check. FIG. 1 shows the proposed device in plan; in fig. 2 shows section A-A in FIG. one; in fig. 3 - yaenj in FIG. I. The device comprises an inlet irrigation canal 1 and a withdrawal irrigation canal 2 and a segment guide 3 placed between them with a shutter 4 installed at it with one end in the form of a flat panel, the other end of which is movably mounted on an axis 5 installed in shore pillars , lateral outlets 6, through which irrigation water enters rice paddies 7, separated by ground rollers 8. Each irrigation canal in the outlet is equipped with a control mechanism, made in the form of a housing 9, in which a spring is installed Enna rack type latch 10, enabling the gate to freely rotate counterclockwise and favoring shutter prevents rotation in the opposite direction. The gear 11 is connected by a cable 12 to a float tank 13, which is housed in the chamber 14 and communicated with a rice check by a rubber tube 15 placed on an axis 16 connecting the rice slip to the feed and discharge channels. The device works as follows. After supplying irrigation water to supply channel 1, shutter .4, the water flow turns on axis 5 to the first (along the water flow) lateral outflow 6 and is kept by the latch 10 from further movement. The water enters only the first rice check 7. When the water layer reaches a predetermined size, water through the rubber tube 15 begins to overflow from the rice check into the float tank 13, which, due to the increase in mass, is lowered and, through gear 11, rotated by cable 12, removes the latch releases the bolt, which moves to the lateral water outlet 6, equipped with a similar lock. The operation continues until the checks are filled and the water enters the discharge channel 2. The pressure of the water flow prevents the spontaneous return of the valve to its original position. During the growing season of rice according to the technological regulations, rice checks are periodically drained, for which the water layer from the checks is discharged into the drainage channel. At this time, the float container 13 is emptied and the spring pushes the latch 10, after which the bolt 4 returns to its original position under the action of its own weight. After the water is supplied to the irrigation canal, the water distribution cycle is repeated, the rice checks are flooded in automatic mode. The proposed device provides a reduction in irrigation water and maintenance costs, as well as the prevention of secondary soil salinization during the initial flooding of crops. An apparatus for adjusting the level of a veda in rice paddies, comprising placed between inlet and outlet channels connected to rice paddies, a flat gate and control mechanisms, characterized in that, in order to expand the field of application and speed up the device, it contains an axis vertically mounted at the bottom of the conduit and a segment guide with which one end of the gate is connected, the other. the end of which is movably mounted on the axis, with the shutter control mechanisms installed in the channels and each made in the form of a housing in which a spring-loaded latch-type latch mounted by a cable with a float tank connected by a flexible rice-check tube is installed. Sources of information taken into account during the examination 1. USSR author's certificate number 647399, cl. E 02 B 13/00, 1979. 2. USSR author's certificate number 618484, cl. Е 02 В 13/02, 1977 (prototype).