Hydraulic system channel body radial sealing device

A radial sealing and hydraulic system technology, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the leakage of the connection surface of the channel body, reduce the roughness of the connection surface of the channel body, tighten the bolt installation torque requirements, etc., and achieve reduction Surface roughness requirements, effects of achieving leak-free connections, strong flexibility and versatility

Inactive Publication Date: 2017-10-24
BEIJING MECHANICAL EQUIP INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above analysis, in view of the deficiencies in the existing solutions, the present invention proposes a hydraulic system channel body radial sealing device, by changing the traditional O-ring or rectangular ring end face sealing form into a radial sealing form, to solve the problem of multiple channels When the bodies are superimposed and combined, the leakage problem between the connecting surfaces of the channel bodies is solved, and at the same time, the roughness of the connecting surfaces of each channel body and the installation torque requirements for tightening bolts are reduced

Method used

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  • Hydraulic system channel body radial sealing device

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Experimental program
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Effect test

Embodiment 1

[0041] When the radial seal straight-through hydraulic joint 2 is used to connect two (not limited to two) unidirectional channel bodies, the inner diameter of the oil port of the channel body A1 and channel body B3 to be sealed connected is the same as the outer diameter of the radial seal hydraulic joint 2 Diameter size matching, and a sinking groove with a diameter 0.1mm-0.2mm larger than the outer diameter of the shoulder 2-4 and a depth of 0.1mm-0.2mm larger than half the width of the shoulder 2-4 is designed on the end face of the oil port, and the radial seal is directly connected to the hydraulic joint 2 Insert into the oil port of the channel body A1 until the end surface of the shoulder 2-4 fits with the end surface of the sinking groove 4 at the oil port of the channel body A1; at the same time, insert the oil port of the channel body B into the other side of the radial seal straight-through hydraulic joint 2 , until the other end surface of the shoulder 2-4 fits wit...

Embodiment 2

[0043]When the radial seal straight-through hydraulic joint 2 is used to seal the oil inlet channel and the oil return channel of the hydraulic system at the same time, that is, when two (not limited to two) bidirectional channel bodies are connected, the channel body A1 and the channel body that need to be sealed are connected The inner diameter of the oil port connected to the body B3 matches the outer diameter of the radial seal hydraulic joint 2, and the diameter of the oil port end surface is designed to be 0.1mm to 0.2mm larger than the outer diameter of the shoulder 2-4, and the depth is 0.1mm larger than half the width of the shoulder 2-4 mm~0.2mm sinking groove, insert two radial seal straight through hydraulic joints 2 into the oil inlet channel and oil return channel oil port of channel body A1 respectively until the end surface of shoulder 2-4 is in contact with the oil inlet channel and return channel of channel body A1 The end faces of the sinking groove 4 at the ...

Embodiment 3

[0045] The radial seal straight-through hydraulic joint adopts the radial seal form of O-ring + retaining ring installed in the two seal ring grooves 2-5 to realize the reliable sealing of the oil ports connected to multiple channel bodies in parallel. The number and relative position of the channel bodies can be adjusted. Adjustment can realize the leak-free connection of the oil ports between the channel bodies. Through this connection mode, the design of parallel multi-piece channel bodies has strong flexibility and versatility.

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Abstract

A hydraulic system channel body radial sealing device comprises a channel body A, a channel body B and a radial sealing hydraulic straight joint; the radial sealing hydraulic straight joint comprises a joint body, an O-shaped ring and a check ring; the joint body is provided with a protruding shoulder in the circumferential direction; the two sides of the protruding shoulder are each provided with a sealing ring groove; the O-shaped ring and the check ring are installed in the sealing ring grooves; the oil port end faces of the channel body A and the channel body B are each provided with a countersunk groove in the circumferential direction; and after the channel body A is connected with the channel body B through the radial sealing hydraulic straight joint, the two end faces of the protruding shoulder are attached to the countersunk grooves of the oil port end faces of the channel body A and the channel body B correspondingly. According to the hydraulic system channel body radial sealing device, a traditional end face sealing type in which an O-shaped ring or a rectangular ring is adopted is changed into a radial sealing type, the problem that when a plurality of channel bodies are superposed and combined for use, leakage is caused between connection faces of the channel bodies is solved, and the requirements on the roughness of the connection faces of the channel bodies and the requirements on the installing torque of tightening bolts are lowered at the same time.

Description

technical field [0001] The invention relates to a hydraulic system channel body sealing device, in particular to a hydraulic system channel body radial sealing device. Background technique [0002] When the hydraulic system has many control valves or integrates the control combination of different functions, it usually adopts a design scheme in which multiple channel bodies are superimposed and combined and fastened with connecting bolts. The oil ports connected to each channel body generally use O-rings or The axial sealing form of the rectangular ring end face seal, this kind of multi-channel body superposition combination method is flexible in combination design, and the advantage is that the hydraulic control valve parts are concentrated, which is convenient for hydraulic system maintenance. However, the biggest disadvantage of the axial sealing form of O-ring end face seals for multiple channel bodies is that leakage between the connecting surfaces of the channel bodies...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/10
CPCF16J15/062F16J15/10
Inventor 尹伟龙王鹏飞董凯
Owner BEIJING MECHANICAL EQUIP INST
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