Hand guided rice transplanter pump valve

• Main Authors: WU XUEYING, ZHU QINCONG, CHEN LUWEI, WU JINFU, LI ANAN
• Format: Patent
• Language: Chinese; English
• Published: 07.05.2014
• Subjects: BLASTING; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR; FLUID-PRESSURE ACTUATORS; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; HEATING; HYDRAULICS OR PNEUMATICS IN GENERAL; LIGHTING; MECHANICAL ENGINEERING; SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; WEAPONS

The utility model relates to a hand guided rice transplanter pump valve which is composed of a pump body, a pump cover and a valve body, wherein the valve body is provided with a reversing oil chamber, an overflow valve chamber, an oil inlet/outlet opening, and a channel A and a channel B both connected with an external cylinder for reversing, wherein a three-position four-way reversing valve assembly is arranged in the reversing oil chamber, the reversing valve assembly comprises a lifting valve core capable of switching oil channels, and one end of the lifting valve core extends out of the valve body; an overflow valve assembly comprising a pressure regulating valve core is arranged in the overflow valve chamber; the pump body comprises a pump chamber and a pump assembly, and the oil outlet of the pump chamber is communicated with the oil inlets of the reversing oil chamber and the overflow valve chamber in the valve body. Such a structure is designed so that the pump, the overflow valve and the reversing v