SU1806557A1 - Fluid-operated motor for watering plant - Google Patents

Description

The invention relates to the field of mechanization of irrigation of crops can be used in irrigation. units whose working body is moved with the help of hydraulic motors operating due to the pressure flow energy.

The aim of the invention is to reduce the effect of the hydraulic motor on the rain quality of the irrigation unit.

Figure 1 shows a diagram of the hydraulic motor of the irrigation unit: figure 2 is a transverse section of the valve.

The hydraulic motor of the irrigation unit consists of a hydraulic cylinder 1 with cavities 2 and 3, a rod 4 with stops 5 and 6, a switch 7 with a spring 8 that provides two stable positions for the switch 7, the distributor 9, connected to the hydraulic cylinder 1 by communication channels 10. 11 and with a pressure pipe 12, the communication channels 13, 14 and throttle 15. The throttle 15 is installed on the pressure pipe 12 between the communication channels 13 and 14 and is designed to create a pressure drop sufficient to move the rod 4 in the forward and reverse directions. A plunger 16 is mounted on the rod 4 of the hydraulic cylinder 1, which interacts with the flexible pipe winding mechanism with a working body at the end.

The distributor 9 includes a three-seat valve With a housing 17, an input 18. outputs 19, 20, 21, with cavities 22, 23, 24 with seats 25. 26, 27, a protrusion 28, and a stem 29 with an axial 30, radial 31 channels, shoulder 32 elastic flat locking bodies 33 and 34. The rod 29 and the housing 17 form between themselves a channel 35.

The hydraulic motor operates as follows.

When supplying water under pressure to the pressure pipe 12, part of the water flow

1806557 A1 through the communication channel 13 enters the distributor 9. Then, in the position where the stem 29 occupies the leftmost position and adjoins the seat 25, water enters the cavity 24 through the inlet 18, the axial channel 30, the radial channel 31 and, due to the pressure drop across throttle 15, presses the shut-off member 33 to the seat 27, then through the outlet 20 through the communication channel 10 passes into the cavity 3 of the hydraulic cylinder 1. In this case, the rod 4 moves from right to left and water is displaced from the cavity 2 into the pressure pipe 12 through communication channels 11, 14 and distributor 9, At the end of stroke, rod 4 rum 6 by means of a spring 8 transfers the switch 7 to another stable position and moves the rod 29 of the distributor 9 from left to right against the shoulder shoulder 32 about the protrusion 28. In this case, water from the pressure pipe to the throttle through channel 13, the input 18 enters the cavity 22. then through exit 19, the communication channel 11 passes into the cavity 2 of the hydraulic cylinder. The channel 35 for the passage of water into the cavity 23 and the channel 31 for the passage of water into the strip. 24 is closed respectively by a locking member 34 and a shoulder 32. At the same time, the cavity 3 of the hydraulic cylinder 1 through the communication channel 10, the cavity 24, 23 and the outlet 21 communicates with the pressure pipe 12 after the throttle 15. This ensures the movement of the rod 4 of the hydraulic cylinder 1 from left to right. At the end of the stroke, the rod 4 with the stop 5 and the switch 7 moves the rod 29 to the leftmost position and then the cycle repeats.

Thus, by creating a small pressure drop across the pressure pipe 12 using the throttle 15 and the alternate communication of the cavities 2 and 3 of the hydraulic cylinder 1 with the pressure pipe 12 before and after the throttle. the reciprocating movement of the rod 5 4, which, acting on any known converting mechanisms, can wind a flexible pipe with a working body at the end on the drum and irrigate in motion.

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Claims (1)

Claim The hydraulic motor of an irrigation unit, including a double-acting hydraulic cylinder, a throttle mounted on a 15th pipeline, a distributor kinematically connected to the hydraulic cylinder rod and hydraulically connected to the piston and piston cavities of the hydraulic cylinder and pressure pipe 20, characterized in that, in order to reduce the impact of the hydraulic motor on the rain quality of the irrigation unit, the distributor is made in the form of a three-seat valve with a body, 25 pcs with axial and radial channels and two elas with flat shutoff bodies installed in the housing with the formation of two extreme and one intermediate cavities, one of which 30 is constantly in communication with the supra-piston cavity, the other with the under-piston cavity of the hydraulic cylinder, and the intermediate cavity is connected to the pressure pipe after the throttle, while the locking organs and channels are located laid relative to the housing with the possibility of communication of the extreme cavities with the pressure pipe to the throttle or with an intermediate cavity. FIG. / Φι / ζ2