Conveniently-detached floating rotary shaft seal

A technology for sealing and sealing the main body of the rotating shaft, which is applied to the sealing of the engine, non-variable-capacity pumps, engine components, etc., can solve the problems of difficult maintenance and unloading, poor sealing performance of the rotating shaft seal, etc. low cost effect

Inactive Publication Date: 2010-06-23
SHANGHAI GENERAL FAN
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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 provide a detachable floating rotating shaft sealing device to solv

Method used

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  • Conveniently-detached floating rotary shaft seal
  • Conveniently-detached floating rotary shaft seal
  • Conveniently-detached floating rotary shaft seal

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0010] figure 1 It includes a pressure plate 3, a sealing body assembly 4, and connecting bolts and nuts 8. The pressure plate 3 has a plurality of semicircular arc grooves, and the connecting bolts and nuts 8 protruding from the sealing body assembly 4 are embedded in the semicircular arc grooves;

[0011] figure 2 It comprises a floating space forming plate 1, a fixing bolt 2, a pressing plate 3, and a sealing body assembly 4, characterized in that the sealing body assembly 4 is in the cavity formed by the casing, the floating space forming plate 1, and the pressing plate 3;

[0012] image 3 It includes a thin iron plate 5, a sealing material 6, an aluminum plate 7, and a connecting bolt and nut 8. The feature is that the sealing material 6 and the aluminum plate 7 are divided into two sections, overlapped, and arranged in multiple layers.

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Abstract

The invention relates to conveniently-detached floating rotary shaft seal, which comprises a pressure plate, a floating space forming plate, a seal main body assembly and a fixed bolt. The conveniently-detached floating rotary shaft seal is characterized in that: the seal main body assembly cannot rotate but only radially float in a cavity which is formed by a machine shell, a main shaft, the floating space forming plate and the pressure plate; the seal main body assembly is formed by alternately superposing seal materials with aluminum plates which are connected by connecting bolts and nuts so as to form the rotary shaft seal; and the seal materials and the aluminum plates of the seal main body assembly are divided from the middle to be convenient to disassemble and assemble. The conveniently-detached floating rotary shaft seal has the advantages of low manufacturing cost, good centering effect, convenient disassembly, assembly and maintenance and long service life. When the seal materials are changed into heat-resisting materials, the materials can be used for sealing gas at high temperature.

Description

technical field [0001] The invention relates to a rotating shaft seal, in particular to a rotating shaft seal of a centrifugal fan. Background technique [0002] At present, in large-scale buildings, industrial and mining enterprises, and special industries, special fans are widely used for ventilation. Since special gases are sometimes transported during use, the shaft of the fan must be sealed to prevent leakage. The generally adopted method There are mechanical seals (comb-shaped seals, labyrinth seals), gas seals, liquid seals, etc., but when used in large centrifugal fans, it is very difficult to seal, maintain and disassemble the fans. Contents of the invention [0003] The object of the present invention is to provide a detachable floating rotating shaft sealing device to solve the problems of poor sealing performance of the rotating shaft seal, difficulty in maintenance and disassembly, etc. [0004] The invention designs an easy-to-disassemble floating shaft seal...

Claims

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Application Information

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IPC IPC(8): F16J15/16F04D29/12
Inventor 金德发蒋红卫周天尧
Owner SHANGHAI GENERAL FAN
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