AGRICULTURAL PLANT PROTECTION MACHINE AND DIAPHRAGM PUMP THEREOF

Title:

AGRICULTURAL PLANT PROTECTION MACHINE AND DIAPHRAGM PUMP THEREOF

Document Type and Number:

WIPO Patent Application WO/2020/191732

Kind Code:

A1

Abstract:

An agricultural plant protection machine and a diaphragm pump thereof. The diaphragm pump (400) comprises: a pump body (1), provided with an accommodating cavity; a pump cover (2) covered on the pump body (1); a diaphragm (3) provided in the accommodating cavity and matching the pump cover, so that the diaphragm and the pump cover enclose a cavity (4); and a driving mechanism (5) provided in the accommodating cavity and comprising a push rod (51), a coil assembly (52), and an elastic reset element (53), the push rod (51) being connected to the diaphragm and connected to the elastic reset element; when the coil assembly is alternately powered on and powered off, the push rod can do reciprocating linear motion to drive the diaphragm to reciprocate with respect to the pump cover such that the cavity is reduced or increased; when the coil assembly is powered on, the push rod moves forwards under the action of magnetic attraction force of the coil assembly; when the coil assembly is powered off, the push rod moves reversely under the action of elastic force of the elastic reset element; the forward direction and the reverse direction are opposite.

Inventors:

SHU ZHAN (CN)
ZHOU LE (CN)
ZHOU WANREN (CN)

Application Number:

PCT/CN2019/080172

Publication Date:

October 01, 2020

Filing Date:

March 28, 2019

Export Citation:

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Assignee:

SZ DJI TECHNOLOGY CO LTD (CN)

International Classes:

B64D1/18; F04B43/04

Foreign References:

CN103470481A	2013-12-25
CN103470481A	2013-12-25
CN108521784A	2018-09-11
CN207173973U	2018-04-03
CN206377004U	2017-08-04
CN106394906A	2017-02-15
CN203796530U	2014-08-27
JP2000130343A	2000-05-12
JP2000130346A	2000-05-12

Other References: