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Pilot type balance valve

A technology of balancing valve and pilot spool, applied in the direction of balancing valve, valve device, safety valve, etc., can solve the problems of energy waste and increase of pilot pressure, etc.

Active Publication Date: 2019-08-30
JIANHU BADA HYDRAULIC MACHINERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the existing technology is to fix the set pressure, which is generally 1.3 to 1.5 times the maximum load. When the load becomes smaller or no-load, the back pressure of the full load is also required, so the pilot pressure must be increased to open the set pressure. pressure, which will cause unnecessary output of useless work, resulting in waste of energy

Method used

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  • Pilot type balance valve
  • Pilot type balance valve
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Embodiment Construction

[0027] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention, but should not be construed as limiting the present invention.

[0028] The pilot type balance valve according to the embodiment of the present invention will be described in detail below with reference to the drawings.

[0029] Such as Figure 1 to Figure 3 As shown, the pilot balance valve according to the embodiment of the present invention includes: a valve body 1, a valve sleeve 2, a partition 3, an outer pilot valve core 4, an inner pilot valve core 5, a first spring seat 6, a valve housing 7, Balance valve core 8, first spring 9a, second spring 9b, third spri...

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PUM

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Abstract

The invention provides a pilot type balance valve. The pilot type balance valve comprises a valve body, valve sleeves, partition plates, outer pilot valve elements, inner pilot valve elements, a firstspring seat, a valve shell, a balance valve element, first springs, second springs, third springs, second spring seats, one-way valve elements and fourth springs. The pilot type balance valve can reduce the pilot pressure without influencing the stability performance, and energy is saved.

Description

Technical field [0001] The invention relates to a valve assembly for a hydraulic device, in particular to a pilot-type balance valve. Background technique [0002] In modern construction machinery, construction machinery and other mechanical equipment, a large number of lifting hydraulic circuits are used. Among them, the balance valve is the key hydraulic component that controls the work of the hydraulic cylinder in the lifting circuit. The performance of the balance valve directly affects the performance of the main engine. Since the balance valve mainly increases the back pressure, and the set pressure is usually 30% to 50% larger than the maximum load, the balance valve is an energy-consuming component in the system and is stabilized by power consumption. At present, the existing technology has a fixed set pressure, generally 1.3 to 1.5 times the maximum load. When the load becomes small or no-load, the back pressure of the full load is also required. Therefore, the pilot pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K17/00
Inventor 不公告发明人
Owner JIANHU BADA HYDRAULIC MACHINERY CO LTD