Oil quick-returning-discharging circuit for oil cylinder of hydraulic machine

A technology for hydraulic machines and oil cylinders, which is applied in the field of rapid oil discharge circuits for hydraulic machine oil cylinders, which can solve the problems of increased manufacturing costs of hydraulic machine oil discharge circuits, and achieve the effects of avoiding increased manufacturing costs and improving the efficiency of oil return

Active Publication Date: 2014-02-05
无锡蓝力智能装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the calibers of the first oil outlet and oil return port on the main reversing valve are limited by the size of the valve body and cannot be increased indefinitely, and the addition of an oil return solenoid valve specially used for oil return will increase the manufacturing cost of the oil discharge circuit of the hydraulic machine

Method used

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  • Oil quick-returning-discharging circuit for oil cylinder of hydraulic machine

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Embodiment Construction

[0011] Hereinafter, the hydraulic cylinder retreat quick drain circuit of the invention will be described in further detail with reference to the accompanying drawings.

[0012] Such as figure 1 As shown, the hydraulic cylinder return quick drain circuit of the present invention includes a cylinder 1 and a main reversing valve 2, and the cylinder 1 is arranged vertically. The main reversing valve 2 has a first oil outlet B, a second oil outlet A, an oil inlet P and an oil return port T. The first oil outlet B of the main reversing valve 2 is connected to the lower chamber of the cylinder 1 through the oil pipe, the oil inlet P of the main reversing valve 2 is connected to the lower cavity of the cylinder 1 through the oil pipe, and the oil return port T of the main reversing valve 2 The oil tank 3 is connected through an oil pipe, and the second oil outlet A of the main reversing valve 2 is connected to the oil tank 3 through an oil pipe. In this embodiment, the height of the p...

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Abstract

The invention relates to an oil return circuit for an oil cylinder, in particular to an oil quick-returning-discharging circuit for an oil cylinder of a hydraulic machine. The oil quick-returning-discharging circuit comprises the oil cylinder and a main reversing valve, wherein the oil cylinder is vertically arranged; the main reversing valve is provided with a first oil outlet, a second oil outlet, an oil inlet and an oil return opening; the first oil outlet of the main reversing valve is connected with the lower cavity of the oil cylinder through an oil pipe; the oil return opening of the main reversing valve is connected with an oil tank through an oil pipe. The oil quick-returning-discharging circuit is characterized in that the lower cavity of the oil cylinder is connected with the oil inlet of the main reversing valve through an oil pipe; the second oil outlet of the main reversing valve is connected with the oil tank through an oil pipe. The oil quick-returning-discharging circuit can achieve the oil quick-returning effect of the oil cylinder of the hydraulic machine under the condition that the diameters of the first oil outlet and the oil return opening of the main reversing valve are not enlarged and no special oil return electromagnetic valve is additionally arranged, so that the manufacturing cost is lowered.

Description

Technical field [0001] The invention relates to an oil cylinder return circuit, in particular to a hydraulic machine oil cylinder return quick oil discharge circuit. Background technique [0002] The hydraulic press usually controls the amount of compressed oil in the lower chamber of the cylinder to control the pressure. In order to achieve this control, the lower chamber of the hydraulic press needs to be sucked and drained. In order to improve the working efficiency of the hydraulic press, the lower chamber of the hydraulic press usually needs Quickly drain oil. [0003] At present, the hydraulic cylinders in the industry return to the drain circuit, including the cylinders and the main reversing valve. The cylinders are arranged vertically; the main reversing valve has a first oil outlet, a second oil outlet, an oil inlet and an oil return port. ; The first oil outlet of the main reversing valve is connected to the lower cavity of the cylinder through the oil pipe, the oil re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/02F15B11/08
Inventor 刘如红胡杰
Owner 无锡蓝力智能装备有限公司
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