RU2609441C1 - Device for adjustment of groundwater level - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: adjuster comprises a drain well 1 connected to the inlet drain 2 with a pipe 3 in which an additional inlet pipe 4 is inserted. The shut-off valve comprises a housing 5, a working chamber 6 and a flexible membrane 7. The working chamber 6 in its side part has an L-shaped water-discharge tube 10 provided with a shut-off valve 11 with a float 12. The float 12 with a cone 11 is fixed to double-arm lever comprising the levers 13 and 14; the latter is connected by rod 15 to the lever 16. The lever 16 is connected to the guide pins 17 passed through the holes 18 of the locking washer 19 which has a channel 20 for the passage of water into the cylindrical pipe 21 which is connected to the outlet pipe 22. The float 23 is attached to the upper part of the valve 24, which has limiting pins 25 with guide pins 17 attached to it. The float 23 is located between limiting pins 25. The presence of the master mechanism made in the form of a screw pair of a screw 27 and a nut 28, provides the ability of kinematic connection of two float drives connected through the levers and the guide pins 17 of the valve 24.

EFFECT: improved reliability of the device operation, simplified design and reduced material consumption.

2 cl, 1 dwg

Description

The invention relates to agriculture, in particular to land reclamation, and can be used for automatic regulation of groundwater in the drainage network of drainage and humidification systems.

There is a known groundwater level regulator containing a shutoff body with a float actuator installed on the drain head located in the well, the regulator is equipped with a tubular filter and a chamber located in the well, and the shutoff actuator is made in the form of two hinges connected with the possibility of independent movement of the floats, one of which is placed in the chamber communicated through a tubular filter with groundwater above the regulator (Copyright certificate SU No. 763519, class ЕВВ 11/00, dated September 15, 1980).

The disadvantages of the described groundwater level controller include the low reliability of the tubular filter sensor, which leads to contamination and the exclusion of water from entering through the inner tube and cannot work along the length of the drainage water regulation regardless of fluctuations in the water level in the drainage system. In addition, the design of a movable cylinder with a poppet, interconnected to move relative to each other in the welded body, is difficult to operate and leads to the need to create significant efforts to overcome the hydrostatic pressure in the welded body, acting on the entire area of the shutter when it is opened. These efforts reduce the safety of the device and, consequently, the reliability of its operation. Due to the friction of the rack, it is not possible to control the system on the vertical stem to completely balance the lever device in two mutually opposite directions, which entails the chance of choosing its position. In addition, the bulkiness of the device node and, as a consequence, a large material consumption.

A device is also known for hydro-automatic control of water levels, comprising a tubular water outlet blocked by a membrane valve and a membrane control chamber in communication with a tubular water outlet by a throttling tube and provided with a drain pipe, a float level sensor, and a membrane control chamber equipped with an air inlet with a floating valve mounted on the air outlet pipe air intake housing, and is interfaced via a drain pipe with a remote hydraulic ligature with float level sensors mounted on the track at the level of the water distribution-retaining weir baffles in Perepadnaya wells located in places side water conducting connection network (Author's Certificate SU №1807466, G05D 9/02, of 07.04.1993).

The disadvantage of this device is the presence of additional remote hydraulic communication with level sensors and the difficulty of centering the float in the housing, which does not provide sufficiently accurate control of the water level on the water distributor path and the connection with the mark of the crest of the retaining-spillway and reliable operation of the device, as well as the limited use of the device due to the presence of only one node in assembled form on the tubular outlet without communication with the tip of the exhaust pipe. At the same time, the construction becomes cumbersome and, as a result, a large material consumption.

The closest in technical essence to the proposed one is a double-acting level regulator containing a drainage well, in which a float is installed, connected by a rod to a valve placed on the water outlet of the water outlet, it contains a chamber directly attached to the head of the water outlet, the valve is made in the form of a membrane with a rigid center fixed between two rings, one of which is rigidly connected to the rod, the other is equipped with a travel stop relative to the bottom of the chamber, and the valve with rings of size eschen in the chamber communicated with the cavity of the drainage well.

However, in this device, the presence of a chamber and a water-isolating membrane with rings and a rod on the head of the water outlet complicates the design of the device. In addition, the use of a siphon water transfer unit does not provide sufficiently accurate control of the lower water level in the well and reliable operation of the device, the structure becomes cumbersome and, as a result, a large material consumption. In addition, due to the frequent impact on the stem from the diaphragm actuator side, the float will cause the gasket to collapse upon contact with the air tube and the possibility of output of regulating the level of water intake in the drainage well.

The technical result from the use of the claimed invention is to simplify the design of the outlet pipe of the water outlet and increase the reliability.

The technical result is achieved by the fact that the device for regulating groundwater, including a drainage well with a drain head, a float, a valve placed above the outlet of the water outlet, a valve travel limiter and a stem, it is equipped with a cylindrical pipe with a valve, the upper part of the valve is equipped with restrictive with pins and guide rods, and the float is fixed to the upper part of the valve and placed between the stops with the possibility of movement along the axis of the cylindrical pipe, while The upper part of the nozzle is equipped with a lock washer having a channel for water inlet into the nozzle.

In addition, the guide rods are passed with a gap through the holes of the lock washer and connected through a lever to the shutoff valve of the regulator float.

All this in general improves the quality and accuracy of the regulation of the groundwater level in the drainage system.

The drawing shows the proposed device for regulating the level of groundwater.

The regulator consists of a drainage well 1 connected to the inlet drain 2 with a pipe 3, into which an additional inlet pipe 4 is inserted, with the ability to move in the vertical direction. The shut-off element consists of a housing 5, including a supra-membrane cavity in the form of a working chamber 6, a flexible membrane 7. A flow divider 8 with a throttling tube 9 is installed on the membrane 7. The rigid center of the membrane with the throttling tube 9 installed in it forms a regulating body with an additional inlet pipe 4 . The working chamber 6 in its lateral part has a L-shaped spillway 10 through which water from the working chamber 6 can be drained into the well 1.

The output end of the L-shaped spillway 10 is equipped with a shut-off valve, made in the form of a cone 11 with a small float 12, located respectively in its lower part. A small float 12 with a cone 11 is mounted on a two-arm lever, including levers 13 and 14, the latter is rigidly connected at one end by a rod 15 with a lever 16 connected to the guide rods 17, passed with a gap through the holes 18 of the lock washer 19, which has a passage 20 for passage water into the cylindrical pipe 21, which is connected to the outlet pipe 22. The float 23 is connected to the upper part of the valve 24 and is placed between the restrictive pins 25 of the valve 24, which can move vertically along the axis of the cylindrical pipe ka 21.

The guide rods 17 are connected with their lower ends to the valve 24, which is equipped with a rubber sealing ring 26.

On the housing 5, a screw 27 with a nut 28 is mounted, located on top of the plate - overlap 29. The screw pair 27 and 28 serves as the driving mechanism for the height of the regulatory body above the inlet pipe 4.

A device for controlling the level of groundwater works as follows.

In the closed position, under their own weight, the valve 24 with the float 23 is lowered down, and the guide rods 17 freely pass through the holes 18 in the lock washer 19 of the pipe 21 and press the valve 24 against the rubber seal 26, thereby the outlet in the pipe 21 is closed.

When water is supplied to the outlet pipe 4, the membrane 7 rises and water freely enters the well 1. At the same time, water enters through the throttling tube 9 into the working chamber 6 and then flows freely through the L-shaped spillway 10, flowing around the cone 11 into the drainage well 1. Simultaneously with the filling of well 1 with an increase in the water level in well 1, water fills through the channel 20 of the lock washer 19 the pipe 21, the threshold of which is located below the high water level in the drain 1. At the same time, the float 23 together with the valve 24 floats inside and the pipe 22, and the guide rods 18 press on the lever 16. Thus, the buoyancy force of the water acting on the float 23 with the valve 24, through the lever 16 connected to the rod 15 and the levers 13 and 14, rise up and perform the transducer movement of the cone 11 , i.e. the opening of the drain pipe 10 is closed, and the outlet pipe 21 is open, since there is a gap between the valve 24 and the lock washer 19 through the channel 20 into the pipe 21. During a high standing water level in the well 1, and therefore, the limitations of the pins 25 of the valve 24 and in the upper position of the float 23 contributes to the drainage of excess ground water by the draeney 2. Moreover, the hydraulic mode in the discharge pipe 22 is characterized by a smooth gradually decaying flow rate to a predetermined emptying of the well 1 associated with the drain 2. m the float 23 with the valve 24 fall down, the valve 24 blocks the outlet in the cylindrical pipe 21, as a result of which the guide rods 17 act on the lever 16, the rod 15 and the levers 13 and 14, act on the float 12 with the cone valve 11, opening it. The presence of the guide rods 17 in the lock washer 19 prevents the deflection of the float 23 and valve 24, which can be moved along the axis of the cylindrical pipe 21. The process is then repeated. The repetition period depends on the adjustment of the float 16 and the stroke of the master mechanism, made in the form of a screw pair 27 and 28.

The supply of kinematic relationships of the float actuators allows you to accurately record the relative position of the two floats with the valves during their joint work and do without the use of any guides for moving the valve cone 11.

A device for regulating groundwater is more simple in design and reliable in operation compared to the known one. The use of a cylindrical vertical nozzle having a lock washer and a channel for water passage and guide rods inside the nozzle for a valve with a float allows more precise adjustment of the upper level in the well and simplifies the design of the outlet nozzle, simplifies the sealing design, and reduces material consumption. As a result, the reliability of the device increases and allows you to fully automate the process of dumping drainage water during the operation of reclamation systems.

Claims (2)

1. A device for controlling the groundwater level, including a drainage well with a drain head, a float, a valve placed above the outlet of the water outlet, a valve travel limiter and a stem, characterized in that the valve is placed in a cylindrical pipe, the upper part of the valve is equipped with restrictive pins and guide rods, and the float is fixed to the upper part of the valve and placed between the stops with the possibility of movement along the axis of the cylindrical pipe, while the upper part of the pipe It is provided with a lock washer having a channel for inlet of water into the tube. 2. The device according to claim 1, characterized in that the guide rods are passed with a gap through the holes of the lock washer and connected through a lever to the shutoff valve of the regulator float.

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