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Control valve for achieving quick pressure relief and same branch pressure in pesticide liquid spraying

A control valve, fast technology, applied in the direction of valve details, multi-way valves, valve devices, etc., can solve the problems affecting the quality of spraying liquid medicine, affecting the quality of liquid medicine operation, and liquid medicine leakage, so as to avoid after-drop failure, Elimination of back-drop failure and low production cost

Active Publication Date: 2015-12-02
HARBIN CITY ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the leakage and after-dripping phenomenon of the sprinkler liquid after the spraying is stopped is one of the main problems affecting the quality of the spraying liquid
Since the existing liquid medicine spraying device is not equipped with a liquid medicine decompression or pressure relief mechanism, when the liquid medicine pressure does not drop in the liquid medicine system, it can only rely on the seal between the valve core and the valve seat of the liquid medicine spray head. Cooperate with the realization of stopping the spraying of the liquid medicine, the leakage and after-dripping of the liquid medicine are more prominent, which affects the quality of the liquid medicine spraying operation

Method used

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  • Control valve for achieving quick pressure relief and same branch pressure in pesticide liquid spraying

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Embodiment Construction

[0009] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. A control valve for rapid pressure relief and branching pressure control for spraying liquid medicine, in which a liquid inlet chamber 24, a liquid spray chamber 20, a pressure relief chamber 21 and a pressure regulating chamber 25 are arranged in the valve body 23, and the liquid inlet chamber 24 is respectively connected to the The liquid spray chamber 20 communicates with the pressure regulating chamber 25, and the liquid spray chamber 20 communicates with the pressure relief chamber 21; the spray head 19 is fixed on the lower side of the valve body 23 and communicates with the liquid spray chamber 20; 23 A box body 27 is installed on the outer side of the upper end, the mounting plate 1, the upper limit switch 7 and the lower limit switch 8 are fixed in the box body 27, the motor 3 is fixed on the mounting plate 1, the double intermediate gear 4 and t...

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Abstract

The invention provides a control valve for achieving quick pressure relief and same branch pressure in pesticide liquid spraying, and belongs to the field of agricultural machinery. A valve body is provided with a liquid inlet cavity, a liquid spraying cavity, a pressure releasing cavity and a pressure regulating cavity, and a box body and a spray head are installed at the upper end and the lower end of the valve body respectively; an installation plate, an upper limit switch and a lower limit switch are fixedly installed in the box body, and a motor fixedly provided with a drive gear, a duplex middle gear and a threaded shaft fixedly provided with a driving gear are assembled on the installation plate; a main shaft in inserted into the valve body, a limit rod, an upper clamp spring, an upper cone valve, an upper pressure spring, a middle cone valve, a middle clamp spring, a lower clamp spring and a lower cone valve are sequentially installed on the main shaft from top to bottom, a lower pressure spring is assembled on the lower side portion of the lower cone valve, the threaded shaft is in threaded connection with the main shaft, and a pressure regulating valve rod fixedly provided with a regulating rotary knob is assembled on the valve body and located in the pressure regulating cavity. The control valve is novel in structure and reliable in use, control operation is easy and convenient, the phenomena of leakage and dropping faults of the spray head can be effectively avoided and eliminated when pesticide liquid spraying operation is stopped, no pesticide liquid loss exists, the production cost is low, and the operation quality is good.

Description

technical field [0001] The invention belongs to agricultural machinery, and mainly relates to a rapid pressure relief and branch pressure control valve on a liquid medicine spraying machine tool. Background technique [0002] In order to avoid damage to agricultural crops, ensure the quality of agricultural products, reduce the loss of liquid medicine, and reduce operating costs, there are strict technical requirements for spraying liquid medicine on crops. At present, the leakage and after-dripping phenomenon of the nozzle liquid after the spraying of the liquid is stopped is one of the main problems affecting the quality of the spraying liquid. Since the existing liquid medicine spraying device is not equipped with a liquid medicine decompression or pressure relief mechanism, when the liquid medicine pressure does not drop in the liquid medicine system, it can only rely on the seal between the valve core and the valve seat of the liquid medicine spray head. Cooperate with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K11/044F16K31/04F16K31/53A01M7/00
CPCA01M7/0089F16K11/044F16K31/046F16K31/047F16K31/53
Inventor 刘恩宏王明军高明宇陈长海张宝库毕春辉杨国威
Owner HARBIN CITY ACAD OF AGRI SCI
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