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Combined ceramic piston device

A combined, piston technology, used in pistons, piston rings, cylindrical pistons, etc., can solve problems such as poor high temperature resistance, achieve high temperature sealing, prevent cylinder jam or seal failure, and eliminate impact collisions.

Inactive Publication Date: 2015-12-30
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims at the problem of poor high temperature resistance existing in some existing hydraulic cylinder pistons during use, and provides a combined ceramic piston device that can effectively solve the above problems

Method used

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Embodiment

[0016] Such as figure 1 , figure 2 As shown, a combined ceramic piston device of the present invention mainly includes a cylinder 8, a piston rod 9, a piston 5, an elastic sleeve 4, and a ceramic sleeve 3, and the head end of the piston rod 9 is provided with a positioning shoulder and an installation The outer thread of the lock nut 1, the head end of the piston rod 9 are installed with the circlip 7, the piston 5, the elastic washer 2 and the lock nut 1 sequentially from the inside to the outside. Elastic washer 2 and circlip 7 are rubber materials.

[0017] The piston 5 is made of medium carbon steel with a stepped cross-section. A sealing ring 6 made of fluorine rubber is installed on the outermost surface of the piston 5, and there is a groove near the step surface of the sealing ring 6; the ceramic sleeve 3 is made of The ceramic material has a hollow barrel-shaped cross-section. The ceramic sleeve 3 is installed on the elastic sleeve 4, and a sealing ring 6 of fluoro...

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Abstract

The invention provides a combined ceramic piston device, which mainly comprises a cylinder tube, a piston rod, a piston, an elastic sleeve and a ceramic sleeve, wherein the head end of the piston rod is provided with a positioning shaft shoulder and external screw threads for installing a locking screw nut; the head end of the piston rod is sequentially provided with an elastic baffle ring, a piston, an elastic gasket and a locking screw nut from inside to outside. The combined ceramic piston device is characterized in that the piston high-temperature-resistant movement and sealing are realized through the ceramic sleeve and fluorous rubber materials. The high-temperature-resistant movement of the piston is realized through the ceramic sleeve made of ceramic materials; the impact collision between the ceramic sleeve and the piston is eliminated through the elastic sleeve arranged between the ceramic sleeve and the piston; the high-temperature sealing of the piston is realized through a sealing ring made of fluorous rubber materials.

Description

technical field [0001] The invention relates to a combined ceramic piston device, in particular to a ceramic sleeve of ceramic material to realize the high temperature resistant movement of the piston, the elastic sleeve between the ceramic sleeve and the piston eliminates the impact and collision between the two, and the fluorine The sealing ring of rubber material realizes the high temperature sealing of the piston, which belongs to the technical research and development field of the piston device of the hydraulic cylinder. Background technique [0002] Hydraulic cylinders use the linear reciprocating motion of the piston to convert hydraulic energy into mechanical energy. However, some hydraulic cylinders are prone to failures of poor performance at high temperatures. The main reason is that the piston is prone to thermal expansion under high temperature conditions, causing the cylinder to block and hinder the movement of the piston; and the sealing ring is prone to expan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J1/10F16J9/00
Inventor 安延涛赵东杨玉娥刘鲁宁杨可森
Owner UNIV OF JINAN