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Plug-in type large-flow check valve

A large-flow, one-way valve technology, applied in fluid pressure actuation devices, fluid pressure actuation system components, mechanical equipment, etc., can solve problems such as large size of one-way valve, inconvenient installation and connection, and flow fluctuation of coolers , to achieve the effect of novel and practical structure, convenient installation and small flow pressure drop

Inactive Publication Date: 2012-12-19
SOLINER NANJING INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the cooling system in the hydraulic system of construction machinery adopts the traditional one-way valve to divide the flow. Due to the large flow pressure drop of the traditional one-way valve and the large shape, it is not easy to install, resulting in large fluctuations in the flow through the cooler, so cooling often occurs. device burst; and because the traditional one-way valve is bulky, it is not easy to install and take over

Method used

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  • Plug-in type large-flow check valve

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with accompanying drawing:

[0013] like figure 1 As shown, the present invention includes a cartridge valve body 9, one side of the cartridge valve body 9 is provided with an oil inlet 10, and the other side is provided with an oil outlet 7. Cover plate 6 is housed on the oil outlet 7, and one side of cover plate 6 is covered on the oil outlet 7, and the other side is pushed down by spring 3. A bolt 5 is installed at the center of the cover plate 6 , and a spring 3 and a support sleeve 4 are set on the bolt 5 . One end of the spring 3 bears on the cover plate 6, and the other end is located inside the support sleeve 4, which can make the position of the spring 3 relatively stable. Also installed on the bolt 6 is a locknut 2 that can adjust the pressure of the spring 3 for fixing and adjusting the cracking pressure. The circumferential side wall of the cartridge valve body 9 is provided with threads...

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Abstract

The invention discloses a plug-in type large-flow check valve which is installed inside an integrated valve block of hydraulic system oil return by virtue of threads (11) on a plug-in valve body (9). The plug-in type large-flow check valve comprises the plug-in valve body (9) which is connected with the valve block, wherein a cover plate (6), a spring (3) and a support sleeve (4) are installed on the plug-in valve body (9) and stringed together through a bolt (5), opening pressure is fixed and regulated by a locknut (2), and an opening pin (1) is installed at the end of the bolt (5) so as to prevent the bolt (5) from dropping. With the adoption of the plug-in type large-flow check valve, the structure is novel and practical (a plug-in mode is adopted, so that a connecting pipeline is saved), the size is small, the installation is convenient, pressure drop of the flow is small, oil passing capability is strong, the flow of a cooler can keep smooth, and the cooler can be effectively prevented from bursting due to a large flow.

Description

technical field [0001] The invention relates to a cooling system in a hydraulic system of construction machinery, in particular to a check valve used in the hydraulic system. Background technique [0002] The flow of hydraulic oil in the hydraulic system of construction machinery depends on the displacement of the pump, the number of engine revolutions and the area ratio at both ends of the oil cylinder. Since the number of engine revolutions varies with the operation and changes greatly (1000 rpm to 2500 rpm) and the oil cylinder The area ratio at both ends is large, so the flow rate changes greatly. The requirement for the cooler is that the flow rate is stable and the general flow configuration is small (considering cost reduction and installation location). At present, the cooling system in the hydraulic system of construction machinery adopts the traditional one-way valve to divide the flow. Due to the large flow pressure drop of the traditional one-way valve and...

Claims

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Application Information

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IPC IPC(8): F15B21/04
Inventor 黄翔周国贞王德达杨芝刚周国龙冷云
Owner SOLINER NANJING INTELLIGENT TECH CO LTD
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