SU591163A1 - Pulsed sprinkling unit - Google Patents

Description

(54) IMPULSE RAIN EQUIPMENT

The invention relates to a technique for irrigating agricultural crops by a method of sprinkling and can be used on stationary sprinkler systems. A pulsed sprinkler for irrigating agricultural crops is known. The known apparatus consists of a water tank, a nozzle, a closure member made in the form of a cylindrical chamber and a valve. However, in such an apparatus, static pressure affects the quality of rain. Another impulse sprinkler is also known, including a water-air tank, an attachment with a turning mechanism, a water-air tank and a locking member made in the form of a spring-loaded piston with a valve and a hollow guide bush installed in the upper part of the guide cylindrical chamber {2). This | pulsed sprinkler is closest to the invention. Its disadvantage consists in overfilling the area in the immediate vicinity of the apparatus, due to the fact that at the moment of the end of the water discharge, the piston displaces the volume of water above it through a nozzle at a slight pressure. The purpose of the invention, the elimination of a section in the immediate vicinity of the apparatus, is achieved by the fact that the valve is installed in the guide chamber, and the lower parts of the sleeve and the guide chamber are provided with seats under the valve. FIG. 1 shows a pulsed sprinkler, general view; in fig. 2 - stop valve when turning on the pumping station; in fig. 3 - shut-off organ at the time of the apparatus operation Pulse sprinkler consists of a water-air tank with a lower cavity I and a check valve 2, a tank 3 with a cylindrical part 4 in which the locking member is mounted. An elastic membrane 5 is installed in the upper part of the tank. A sprinkling nozzle 6 is installed on the cylindrical part of the tank 3. The locking member is equipped with mounting longitudinal ribs 7 and consists of a cylindrical chamber 8 having a fitting 9 for a sub-water, from a network, a plate non-return valve 0 and II with saddle 12; a hollow piston 13 with a check valve 14 and directed; a sleeve 15 with a seat 16 and grooves .17. Between the seats 12 and 6 there is a valve 18, for example, a ball valve, and a spring 19 is installed between the bottom of the cylindrical chamber and the piston.

The apparatus operates in a "standby" mode by means of a decrease in pressure in the supply network. For its normal operation, it is necessary to fill the lower cavity 1 of the air-water tank with air through the check valve 2 to the design lower pressure.

When the pumping station is turned on, water enters through port 9 (Fig. 2} into the cavity 20 of the cylindrical chamber 8 and moves the ball valve 18 upward, pressing it against the seat 16 of the guide sleeve 15. The hollow piston 13 at this time is due to the water pressure seals the inlet to the sprinkler.

At the same time, from the cavity 20, pressing the plastic valve 10, water enters the sub-piston cavity 21, from which, pressing the check valve 14, enters the cavity 22 of the cylindrical part 4. Filling the upper part of the water-air tank continues until the elastic membrane 5 is completely to the lower hemisphere of the container 3, thereby compressing the air in the lower cavity 1 to the operating pressure. Pulse machine is ready to splash.

When a low pressure signal is generated in the head part of the system, in -. In the closure organ, water rushes out of cavity 20 through fitting 9 into the inlet piping network, and pressure drops below the ball valve 18. Under the action of compressed air, the water in the cavity 22 moves the hollow piston 13 downward, creating pressure in the piston cavity 21, which through the grooves 17 on the control sleeve 15 opens the ball valve 18 to the saddle 12, closing:,. At the same time, the plastic non-return valve 10, under pressure from the water, closes the opening in the cylindrical chamber 8, and the non-return valve 14 presses tightly against its machines, preventing water from flowing through the stop valve into the network. The hollow piston 13 at this moment moves down to the stop, opening the water outlet to the sprinkler nozzle 6. Water located in the piston cavity 21 at this time through the grooves 17 and the through hole 23 of the drift sleeve 15 is forced out into the barrel of the device. The water from the upper part of the tank 3 under the pressure of compressed air also rushes to the sprinkler nozzle 6. There is a surge of accumulated water, which lasts until the elastic membrane 5 takes up the extreme upper position, after which the pressure in the cavity 22 drops significantly. In the cavity 20, the created discharge tightly holds the ball valve 18, and the hollow piston 13 under the action of the spring 19 begins to move upwards. Water located under the piston through the opening 23 of the guide sleeve 15 moves into the bristle chamber 21. The hollow piston 13 closes the outlet of the apparatus. Duty cycle is complete. Further, the whole process is repeated.

Install the ball valve in the cylinder guide and. The presence of saddles in the lower parts of the sleeve and the guide chamber under this valve allows the outlet of the sleeve to be closed, which eliminates the overlap in the immediate vicinity of the apparatus.

Claims (2)

1. Author's certificate number 494154, cl. GO 25/00, 1974. 2. The author's certificate number 498932, cl. A. About G 25/00, 1974. ig i 23 about 12 (rig. g 6 fptji.3