Title: Fertilizer spraying needle for liquid fertilizer applying machine
Application Number: 200610150879 Application Date: 2006.10.12
Publication Number: 1930940 Publication Date: 2007.03.21
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: A01C23/04;A01M7/00
Applicant(s) Name: Northeast Agricultural Univ. Address:
Inventor(s) Name:
Attorney & Agent:
Abstract:
    The fertilizer spraying needle for liquid fertilizer applying machine as one farm machine has a valve seat with upper and lower cavities and communication hole assembled between the needle head and the needle rod to connect the needle head and the needle rod integrally; a valve core, a pressure spring and a pressure regulating nut assembled successively inside the lower cavity. The valve core has upper conic surface contacting to the pressure regulating nut; the pressure regulating nut is screwed to the valve seat; the pressure spring has two ends contacting separately to the valve core and the pressure regulating; and the valve seat has fertilizer spraying hole communicated with the lower cavity and the outside. The fertilizer spraying needle may be used to apply liquid fertilizer into soil near the plant root system, and has the features of simple structure, reliable operation, good fertilizer applying effect and high adaptability.
Time: 6
<- Previous Patent:Pest repelling device   |  Next Patent:Method for culture of alpinia gal... ->