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Hydraulic oil suction self-sealing device

A self-sealing device and hydraulic technology, applied in fluid pressure actuating devices, valve devices, lift valves, etc., can solve the problems of high manufacturing cost and complex structure of butterfly valves

Inactive Publication Date: 2021-01-29
CHANGDE KEJIAN MACHINERY MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the structure of the butterfly valve is complex and the manufacturing cost is high

Method used

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  • Hydraulic oil suction self-sealing device
  • Hydraulic oil suction self-sealing device

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Embodiment Construction

[0024] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical The orientations or positional relationships indicated by "straight", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the Describes, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and operate in a specific orientation, a...

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Abstract

The invention discloses a hydraulic oil suction self-sealing device. The hydraulic oil suction self-sealing device comprises a limiting screw, an ejector rod fixing plate, an elastic element, an ejector rod, a sealing plate and a valve seat; the limiting screw is arranged at the end, away from the elastic element, of the ejector rod, and used for achieving movement of the ejector rod; the ejectorrod sequentially penetrates through the ejector rod fixing plate, the sealing plate and the valve seat, and the sealing plate is fixedly connected with the ejector rod; the elastic element is locatedbetween the ejector rod fixing plate and the sealing plate and is arranged on the ejector rod in a sleeving manner; an oil port 61 is formed in the valve seat in the axial direction; and the sealing plate 5 completely covers the oil port 61 when being in contact with the valve seat 6. The hydraulic oil suction self-sealing device aims at solving the problems that a butterfly valve is complex in structure and high in manufacturing cost.

Description

technical field [0001] The invention belongs to the technical field of construction machinery equipment, and in particular relates to a hydraulic oil suction self-sealing device. Background technique [0002] With the development of construction machinery concrete pump trucks in the past 20 years, the main pump has changed from one main oil pump with a displacement of 190 to two main oil pumps with a displacement of 190 in series, and the flow rate has reached 890L / min. Hydraulic engineers consider hydraulic oil circuit maintenance in the hydraulic pipeline, install a special butterfly valve on the oil suction pipeline in front of the oil pump, turn the butterfly valve wrench, the fuel tank oil will be disconnected from the oil suction pipeline, and the fuel tank oil will not leak through the oil suction port when the oil pump pipeline is removed. The working principle of the butterfly valve is: the valve body is equipped with a spherical plastic PTFE retaining ring, the val...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/02F16K1/36F16K1/42F15B13/02E04G21/04
CPCF16K1/02F16K1/36F16K1/42F15B13/02E04G21/04
Inventor 阎军蒋玉成
Owner CHANGDE KEJIAN MACHINERY MFG CO LTD
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