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Converging multi-way valve

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

Active Publication Date: 2015-12-02
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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Examples

Experimental program
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Embodiment Construction

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

[0024] Such as figure 1 with figure 2 As shown, the combined multi-way valve includes oil inlet and return valve 3, large flow control valve 1, three small flow control valves 2 and oil inlet valve 4, oil inlet and return valve 3, large flow control valve 1, three small flow 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 integrates a single-channel 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 is provided with a first valve stem hole, a first converging oil inlet passage 1c, a fir...

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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 hydraulics, and relates to a hydraulic multi-way valve, in particular a confluence multi-way valve. Background technique [0002] Hydraulic multi-way valves are used in equipment such as forklifts, loaders and excavators. At present, the hydraulic multi-way valves in the forklifts of 5 to 10 tons in China all adopt double pump confluence; because the flow required for the forklift mast to rise is the maximum, the hydraulic system selects the double pump confluence according to the maximum flow; the engine or motor power is also Select the maximum value. The flow required for tilting or side shifting of the mast is only 30% to 45% of the maximum flow of the hydraulic system, that is, when the mast is tilted or moving sideways, the hydraulic multi-way valve is still in a merging state and flows to the tilt cylinder and the side shift cylinder. The flow rate is much larger than the required flow rate, so a thro...

Claims

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Application Information

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Patent Type & Authority Applications(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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