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Pilot type balance valve

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

Active Publication Date: 2018-12-07
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] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0028] A pilot type balancing valve according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

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

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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% greater than the maximum load, the balance valve is an energy-consuming component in the system, and stability is obtained through power consumption. 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 r...

Claims

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Application Information

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