Water turbine

Abstract

The invention provides a water turbine. The water turbine comprises a turbine shell, an impeller and a spray nozzle driving the impeller to rotate. The impeller is coaxially arranged in the turbine shell. The rotation center of the impeller is connected with a transmission shaft. The side edge of the turbine shell is provided with a water inlet pipe. The top end of the turbine shell is provided with a water outlet pipe. The bottom of the turbine shell is connected with the turbine shell in a buckled manner. The transmission shaft penetrates through the turbine shell. The spray nozzle is arranged in the water inlet pipe. The spray nozzle gradually shrinks in the water flow direction. The outlet end face of the spray nozzle is located within the cylinder face where the inner wall face of theturbine shell is located. According to the water turbine, the outlet end face of the spray nozzle is arranged to be attached to the cylinder face where in the inner wall face of the turbine shell islocated, so that water flow can be injected into the impeller at a high speed, the internal pressure loss of the water turbine is lowered, under the condition that the water flow is certain, a largerdrive torque is provided for an external transmission device, and therefore the work efficiency of the water turbine is improved.

Description

Technical field [0001] The invention relates to the technical field of agricultural machinery, and more specifically, to a water turbine. Background technique [0002] In recent years, the reel type sprinkler irrigation machine has been popularized and developed rapidly, and it has the advantages of strong adaptability to terrain, labor saving, flexibility, and good spraying quality. [0003] The hydraulic drive device of the reel sprinkler irrigation machine mainly has three types: hydraulic cylinder type, rubber bladder type and water turbine type. The hydraulic cylinder type is to prevent the wear of the plunger cylinder and has strict water quality requirements. The working wastewater is discharged in the roll. The vicinity of the turning car affects the spraying quality. The rubber bag type also has stricter water quality requirements. The water turbine drive shaft device works smoothly, has no vibration, has low water quality requirements and no waste water leakage. It is t...

AI Technical Summary

Problems solved by technology

[0004] At present, most of the water turbines of typical domestic reel sprinkler irrigation machines are imported from abroad in the mid-1990s. The speed of the jet flow is greatly reduced during the process of the blade, which leads to the low utilization rate of the jet energy of the nozzle by the water turbine, the driving torque generated by the water turbine is relatively small, and the efficiency of the water turbine is relatively low

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