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Priming valve

A filling valve and valve seat technology, which is applied in the field of hydraulic oil filling and draining control valves, can solve the problems of inability to meet the requirements of the installation space of intelligent electro-hydraulic actuators, large volume, etc., and achieves compact structure, small volume, The effect that meets the needs of use

Pending Publication Date: 2018-08-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, under the premise of ensuring reliable sealing, the existing refueling valve generally only operates dozens of times, and its volume is relatively large, which cannot meet the installation space requirements of intelligent electro-hydraulic actuators.

Method used

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Embodiment Construction

[0025] Such as Figure 1 to Figure 5 As shown, the present invention discloses a refueling valve, which includes a valve body 1, and the two ends of the valve body 1 are respectively provided with an oil inlet 12 and an oil outlet 11, wherein the oil inlet 12 is larger and the oil outlet 11 is larger. Small, the oil inlet 12 and the oil outlet 11 are coaxially arranged; the valve body 1 is provided with an installation cavity coaxial with the oil inlet 12 and the oil outlet 11 in the axial direction and connected, and the installation cavity is provided with The valve seat 4, the valve seat 4 is used to install the push rod 3, and cooperates with the valve core 2 to realize the sealing function.

[0026] The installation cavity is a circular cavity with step-by-step diameter reduction, including a fixed cavity 17, a sealed cavity 16 and a diversion cavity 15 arranged coaxially in sequence, such as figure 1 As shown, the fixed chamber 17 is connected to the oil inlet 12, and t...

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Abstract

The invention discloses a priming valve. The priming valve comprises a valve body, wherein the two ends of the valve body are provided with an oil inlet and an oil outlet respectively, a mounting cavity communicating with the oil inlet and the oil outlet is formed in the valve body in the axial direction, and a valve seat is arranged in the mounting cavity; the mounting cavity comprises a fixing cavity, a sealing cavity and a flow guiding cavity which are coaxially arranged in sequence, wherein the rear end of the valve seat is fixed in the fixing cavity, the front end of the valve seat extends into the flow guide cavity, and the valve seat penetrates through the sealing cavity and is in interference fit with the sealing cavity; an ejector rod is movably arranged in the valve seat in a penetrating mode, and the front end of the ejector rod extends into the flow guide cavity and is provided with a valve element; and the ejector rod and the valve seat are in clearance fit. The priming valve adopts a two-way redundant sealing structure, so that the sealing reliability of the priming valve is guaranteed; the priming valve is compact in structure, small in size and high in working lifefrequency; and the use requirements of an electro-hydraulic actuator can be effectively met.

Description

technical field [0001] The invention relates to a filling valve, in particular to a control valve for filling and releasing hydraulic oil of a hydraulic system. Background technique [0002] As a power device, the intelligent electro-hydraulic actuator is widely used in the drive and control of various valves, and is more widely used in almost any part that needs power drive. The domestic development of intelligent electro-hydraulic actuators puts forward new requirements for filling valves, which are required to have the functions of filling and discharging hydraulic oil, small in size, reliable in sealing, and high in working frequency. [0003] However, under the premise of ensuring reliable sealing, the existing refueling valve generally only operates dozens of times, and the volume is relatively large, which cannot meet the requirements of the installation space of the intelligent electro-hydraulic actuator. Contents of the invention [0004] The object of the presen...

Claims

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Application Information

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IPC IPC(8): F16K1/00F16K1/36F16K1/42F16K1/46F16K27/02
CPCF16K1/00F16K1/36F16K1/42F16K1/46F16K1/465F16K27/02
Inventor 田中山沙超刘维国曾维亮杨昌群雷小飞牛道东马锋岗
Owner CHINA PETROLEUM & CHEM CORP
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