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Proportional control valve for lifting height of nozzle

A technology of proportional control valves and nozzles, which is applied in the direction of valve lifts, valve details, valve devices, etc., which can solve the problems of affecting the response speed, not being able to adapt to the rapid change of fountain water shape, and increasing the cost, so as to achieve the effect of low cost

Inactive Publication Date: 2006-07-05
北京三博中自科技有限公司 +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

However, foreign brands of frequency converters have the upper hand in the current market. A frequency converter with reliable quality and stable performance is quite expensive, and the frequency conversion speed regulation method only allows one pump to supply one nozzle, which increases the cost of the entire project.
Also, due to the large inertia of the rotor of the electric pump, which affects the response speed, it cannot well adapt to the requirements of rapid changes in the water shape of the fountain.

Method used

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  • Proportional control valve for lifting height of nozzle
  • Proportional control valve for lifting height of nozzle
  • Proportional control valve for lifting height of nozzle

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Embodiment Construction

[0018] The technical scheme adopted by the present invention is: it is known that the height of the water column at the outlet of the nozzle is directly proportional to the pressure of the water flow at the inlet of the nozzle. Based on this, it can be inferred that continuous adjustment of the water column height can be achieved by continuously adjusting the water flow pressure at the nozzle inlet. The proportional control valve of the present invention is connected in series between the water supply electric pump and the nozzle, the inlet of the proportional control valve is connected with the outlet of the submersible electric pump, and the outlet of the proportional control valve is connected with the nozzle inlet. The proportional control valve is composed of two non-leakage valves (seat valves) with different diameters. The pilot seat valve with a smaller diameter has the functions of comparator and pilot hydraulic amplification. One end of the pilot valve is controlled b...

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Abstract

A ratio control valve of nozzle delivery head is prepared `as setting said valve between water pump and nozzle, forming said valve by two stages of nonleakage valves with different diameters, acting one end of guide valve by electromagnetic force and another end by water flow pressure, using half bridge to vary water flow pressure at nozzle inlet and feeding said pressure back to left cavity of guide valve in real time, depending ratio of said water flow pressure at nozzle inlet upon set electromagnetic control force when regulation is finished.

Description

technical field [0001] The nozzle head proportional control valve of the present invention relates to a nozzle head proportional control valve (hereinafter referred to as a proportional control valve) which is specially used in a waterscape fountain and can continuously adjust the height of a nozzle water column. Background technique [0002] The waterscape fountain requires that the height of the water column of the fountain can be changed synchronously with the computer control instructions. At present, the known method of continuously adjusting the height of the nozzle water column is to use a frequency converter to control the frequency of the water supply electric pump. When the speed of the electric pump increases, the output flow increases, so the nozzle water column rises accordingly. On the contrary, if the speed of the electric pump is reduced, the output flow will decrease, so the water column of the nozzle will decrease accordingly. However, foreign brands of in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/00F16K31/122F16K31/06
Inventor 汪云刘宝英
Owner 北京三博中自科技有限公司
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