4. The operating technology of the throwing machine The throwing principle of the new type of portable pneumatic rice throwing machine is the use of powerful wind current generated when the engine rotates at a high speed, and is connected to the arc-shaped casting groove of the storage tray through the ventilation pipe. The seedlings are ejected by strong winds and then parabolic flight. When the seedlings fly to the highest point, they are free to fall. Since the roots of the seedlings are thick and muddy, the seedlings are planted with mud and erected freely. (1) Test throwing and adjustment before throwing The first check of the connection between the engine and the storage tray, the ventilation pipe is reliable, according to the prescribed ratio, the uniform mixing ratio of gasoline and oil is 20:1, then add the fuel tank to start the engine After normal operation, carry out test throwing, and adjust the throwing angle of the dump tray according to actual needs. (2) Shuttle-type walking method is generally adopted in the operation of casting machine. In windless weather, whether it is horizontal or vertical walking should be determined according to the shape of the field. In case of windy weather, parallel operation should be carried out along the wind direction in order to increase the uniformity of the casting. (3) Feeding method Before loading the dumplings, load the storage trays as far as possible. Then adjust the throw distance and height according to the size of the field, increase the throttle, and use the two hands to continuously transfer the seedlings to the storage. The circular disk of the boring disk is cast in the groove. In general, it is appropriate to adjust the tilt angle of the storage tray to about 45. When throwing at a short distance or when the field is small, throwing operations can be performed by reducing the throttle. The operator can also appropriately increase or decrease the amount of feed to adjust the seedling density. Observe the flying direction and landing point of the seedlings at any time, and try to achieve even density and meet the technical requirements of agronomic high yield. 5. Precautions (1) When adding gasoline, be sure to mix the gasoline with proper "steam engine oil" according to the prescribed ratio, and then add the fuel tank. When refueling, you must keep the refueling equipment clean and safe, and keep away from the fire. source. It is forbidden for operators to catch fire and smoke to prevent fires. (2) When starting the engine, first open the damper 1/2, and then turn it on after it is started. Never throttle the throttle to prevent a cylinder accident. (3) Within 3 to 5 days after throwing, we must pay strict attention to the management of Daejeon Water, keep the water depth within 3.3 cm, and strictly prohibit flooding with large water and fierce water. (4) After each field is finished, it takes time to conduct on-site observations, mainly measuring the density uniformity, generally maintaining 25 to 28 holes per square meter, and the number of acres of basic seedlings reaching 16.6 to 18,600 points. suitable. Tightening and replenishing methods can be used to achieve as close a density as possible and lay a good foundation for high production. (5) In case of heavy winds and unsuitable for rainy days, throwing operations are not suitable. (Xixiang, Shanxi Agricultural Machinery Management Station, Xixiang County, Shaanxi Province 723500)
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