A multi-point pressing high temperature resistant dynamic sealing device

A technology of high temperature resistance and dynamic sealing, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve problems such as unsatisfactory sealing effect, achieve radial flexible dynamic sealing, good market prospects, and good high temperature resistance Effect

Active Publication Date: 2015-10-28
DALIAN HUANZI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is: to solve the technical problem that the sealing effect of the existing sealing method is not ideal, the present invention provides a multi-point compression high-temperature resistant dynamic sealing device, which realizes the axial and Radial seal, good sealing effect, and the graphite packing group used has high temperature resistance characteristics, the invention is suitable for large high temperature rotary equipment

Method used

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  • A multi-point pressing high temperature resistant dynamic sealing device
  • A multi-point pressing high temperature resistant dynamic sealing device
  • A multi-point pressing high temperature resistant dynamic sealing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1 (emphasis illustrates the application of the present invention in the rotary kiln pyrolysis furnace)

[0032] A multi-point compression high-temperature resistant dynamic sealing device is applied in a rotary kiln pyrolysis furnace, where pyrolysis reaction occurs, the reaction temperature is 400°C-450°C, and at the same time, the temperature is 6-8 rad / min speed rotation.

[0033] The present invention seals between the two ends of the pyrolysis furnace of the rotary kiln and the fixed body 6, (the sealing surface of the rotating equipment and the inner contact surface of the graphite packing group are in flexible contact, when the outer surface of the rotating equipment is caused by processing When the roughness of the rotating equipment is uneven, it can also keep the sealing surface of the rotating equipment in good sealing contact with the inner contact surface of the graphite packing group, and can also ensure the normal rotation of the rotating equip...

Embodiment 2

[0035] Embodiment 2 (focusing on the application of the present invention in the heating and stirring tank equipment of the sludge treatment system)

[0036] The reaction temperature in the heating and stirring tank is 400°C to 500°C, the tank body is a fixed body, and the drive shaft is a rotating device. The drive shaft rotates at a constant speed of 14-16 rad / min.

[0037] The invention seals between the drive shaft of the heating and stirring tank and the tank body, and the sealing surface of the drive shaft and the inner contact surface of the graphite packing group are in flexible contact. When the roughness of the outer surface of the drive shaft due to processing When it is uneven, it can also keep the sealing surface of the drive shaft in good sealing contact with the inner contact surface of the graphite packing group, and can also ensure the normal rotation of the drive shaft. The axial circumference of the sealing pressure ring 1 has a stepped circular hole, and a...

Embodiment 3

[0038] Embodiment 3 (focusing on the application of the present invention in the aggregate drying drum equipment in the asphalt mixing system)

[0039] The reaction temperature in the heating and stirring tank is 450°C to 480°C, the cylinder body is a rotating device, and the inlet and outlet cylinder covers on both sides of the cylinder are fixed bodies. The cylinder rotates at a constant speed of 7-9rad / min.

[0040] The invention seals the two ends of the aggregate drying cylinder and the inlet cylinder cover and the outlet cylinder cover, and the sealing surface of the cylinder body and the inner contact surface of the graphite packing group are in flexible contact. When the outer surface of the cylinder body is processed When the resulting roughness is uneven, it can also keep the sealing surface of the cylinder and the inner contact surface of the graphite packing group in good sealing contact, and can also ensure the normal rotation of the cylinder. The axial circumferen...

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Abstract

The invention relates to the technical field of dynamic sealing devices and discloses a multipoint compression high-temperature-resistant dynamic sealing device. According to the device, a sealing compression ring presses a graphite packing set in the axial direction to enable the graphite packing set to be in close contact with the sealing surface of a fixed body and flexibly fixed to the fixed body through an axial fastening bolt; a spring pressing piece is of a wavy structure, one end of the spring pressing piece is fixed to a radial bolt hole of the sealing compression ring through a radial fastening bolt, the other end of the spring pressing piece is suspended in the air and is in contact with and fixed to the graphite packing set flexibly through a wave trough, and the spring pressing piece presses the graphite packing set tightly and evenly in the radial direction to enable the inner surface of the graphite packing set to be in close contact with the sealing surface of rotary equipment. According to the device, axial static sealing and radial flexible dynamic sealing are achieved for the rotary equipment, and due to the fact that the graphite packing set adopted is good in high temperature resistance, the service life of the sealing device can be prolonged. The device is suitable for large high-temperature rotary equipment and has good market prospects.

Description

technical field [0001] The invention relates to the technical field of dynamic sealing devices, in particular to a multi-point pressing high temperature resistant dynamic sealing device. Background technique [0002] Rotary equipment is usually a closed and non-stop rotating equipment. This type of equipment has high requirements for sealing. It is required to ensure the tightness of the seal without affecting its rotation. The existing dynamic seals cannot achieve complete sealing and cannot be avoided. Air enters or gas overflows inside the rotator, resulting in increased energy consumption and reduced thermal energy utilization. There are currently two sealing methods, one is a non-contact seal, that is, a labyrinth seal, which is affected by the radial deflection and axial rotation of the cylinder, so that the gap between the fixed and rotating parts continues to increase. Thus affecting the sealing effect; one is the contact seal, since the sealing ring connected to th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/34F16J15/20
Inventor 邹欣洺张赜于文斌
Owner DALIAN HUANZI TECH
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