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Confluence multi-way valve

A multi-way valve and diverter valve technology, applied in the hydraulic field, can solve the problems of hydraulic system heat generation, energy consumption loss of throttling structure, temperature rise, etc., and achieve the effects of easy operation, saving manufacturing cost, and small size

Active Publication Date: 2017-03-01
ZHEJIANG HAIHONG HYDRAULIC TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The throttling structure will produce a large loss of energy consumption, which will lead to heating and temperature rise of the hydraulic system

Method used

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  • Confluence multi-way valve
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  • Confluence multi-way valve

Examples

Experimental program
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Effect test

Embodiment Construction

[0023] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0024] Such as figure 1 and figure 2 As shown, the confluence multi-way valve includes an oil inlet and outlet valve 3, a large flow control valve 1, three small flow control valves 2 and an oil inlet valve 4, an oil inlet and outlet valve 3, a large flow control valve 1, and three small flow control valves. The control valve 2 and the oil inlet valve 4 are sequentially connected in series from one side to the other.

[0025] Such as Figure 3 to Figure 5 As shown, the large flow control valve 1 is integrated with a single-way steady flow diverter valve 5 . Specifically, the large flow control valve 1 includes a first valve plate 1a and a first valve stem 1b. The first valve plate 1a has a first valve stem hole, a fir...

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PUM

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Abstract

The invention provides a converging multi-way valve, belongs to the field of hydraulic technologies and solves the problem that conventional forklift double-pump convergence easily leads to heating and temperature rise in a hydraulic system. The converging multi-way valve comprises a large-flow control valve, small-flow control valves and a single-way steady-flow dividing valve, wherein a first converging oil inlet passage and a first working oil port are arranged in the large-flow control valve, and second converging oil inlet passages and circular oil inlet passages are arranged in the small-flow control valves; a third oil inlet passage and a first oil outlet passage are arranged in the single-way steady-flow dividing valve; the first converging oil inlet passage is communicated in series with the second converging oil inlet passages; the third oil inlet passage can be communicated with the first converging oil inlet passage, and when the large-flow control valve stays in the situation that oil flows from the first converging oil inlet passage to the first working oil port, the third oil inlet passage and the first converging oil inlet passage stay in a cut-off state; and the first oil outlet passage is communicated with the circular oil inlet passages. The converging multi-way valve guarantees the normal hoisting actions of a forklift, reduces the energy loss of an engine or a motor, and achieves an energy-saving effect.

Description

technical field [0001] The invention belongs to the technical field of hydraulic pressure, and relates to a hydraulic multi-way valve, in particular to a confluence multi-way valve. Background technique [0002] Hydraulic multiplex valves are used in equipment such as forklifts, loaders and excavators. At present, the hydraulic multi-way valves in domestic forklifts below 5 to 10 tons all use double-pump confluence; since the flow required for the forklift mast to rise is the maximum, the hydraulic system chooses double-pump confluence according to the maximum flow; the engine or motor power is also Sizing for maximum value. However, the flow required for the tilting or lateral movement of the mast is only 30% to 45% of the maximum flow of the hydraulic system, that is, when the mast tilts or moves sideways, the hydraulic multi-way valve is still in the state of confluence, and the flow flows to the tilting cylinder and the sideshifting cylinder. The flow rate is much grea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B13/02B66F9/22
Inventor 黄国和李元松王军张辉刘真
Owner ZHEJIANG HAIHONG HYDRAULIC TECH
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