Automatic axial adjustment bearing chamber for rotating shaft of air suspension blower

Abstract

The utility model discloses an automatic axial adjustment bearing chamber for a rotating shaft of an air suspension blower, which comprises an end face flange and a shell provided with a stepped groove, the end face flange is fixed on the end face of the upper part of the stepped groove, and an elastic body, a bump foil and a flat foil are sequentially arranged at one end of the end face flange facing the stepped groove; a thrust disc is mounted between the flat foil and the bottom surface of the stepped groove; the elastomer comprises an inner gasket, an electroactive polymer and an outer gasket which are sequentially stacked from inside to outside; the electroactive polymer is connected with an external controller through a wire, and the shell is provided with a plurality of displacement sensors used for detecting whether the thrust disc generates axial deviation or not. The device is good in economical efficiency, simple in structure and convenient to assemble. The purpose of automatic axial adjustment of the rotating shaft during working is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of air suspension blower, specifically relates to an air suspension blower rotating shaft automatic axial adjustment bearing chamber. BACKGROUND

[0002] The blower has developed from the first stage Roots blower to the second stage multistage blower, to the third stage single-stage blower, to the fourth stage magnetic suspension blower, and finally to the present air suspension blower. The air suspension blower is widely used in air blowing aeration of environmental protection sewage treatment systems, production gas of food, medicine, petroleum, chemical industry, mechanical and electronic industry, power generation desulfurization and denitrification stripping and coal powder material conveying, cement building material production material conveying, compressed gas for steel smelting production, compressed gas for textile printing and dyeing production, large-scale ship compressed gas, and gas field of other industries such as paint spraying and pneumatic tools. The air suspension blower has an energy saving efficiency of 30-50% higher than that of the traditional Roots blower, low noise and small size.

[0003] Chinese patent application with publication number CN113404704A discloses a thrust bearing rear-mounted air suspension blower, which places the thrust bearing at the rear of the air suspension blower, reduces the stress on one side of the air blowing impeller, and ensures uniform stress on the air radial bearings on both sides of the blower. However, the thrust disc position is inconvenient to adjust during work, and the axial position of the rotating shaft cannot be changed according to work needs. Chinese patent application with publication number CN115853815A discloses an air suspension blower rotating shaft automatic centering bearing chamber and its use method, which uses a sensor to monitor the radial position of the rotating shaft, changes the position of the radial bearing foil, and realizes the function of automatic centering of the air suspension blower rotating shaft. However, only the wear of the radial bearing is considered, and the influence of the axial bearing on the blower is not considered.

[0004] The above-mentioned problems of unstable axial distance of the rotating shaft during work have not been improved in the prior art, and there is no suitable structure for real-time automatic axial adjustment of the air suspension blower rotating shaft. UTILITY MODEL CONTENTS

[0005] In view of the above technical deficiencies, the utility model aims to provide an air suspension blower rotating shaft automatic axial adjustment bearing chamber, which is economical, simple in structure and easy to assemble.

[0006] To solve the above technical problems, the utility model adopts the following technical scheme:

[0007] The utility model provides a kind of air suspension blower fan rotating shaft automatic axial adjustment bearing chamber, including end face flange and the shell being equipped with stepped groove, the end face flange is fixed on the end face of stepped groove upper part and its end face to stepped groove is sequentially equipped with elastomer, wave foil and flat foil;Push disc is installed between the flat foil and stepped groove bottom surface, and the push disc is installed on the rotating shaft adapted to bearing chamber;The elastomer includes the inner washer, electroactive polymer and outer washer sequentially stacked from inside to outside;The electroactive polymer in the elastomer is connected with external controller by wire, and the elastomer and end face flange are all opened with through hole for wire to pass through;The shell is equipped with a plurality of displacement sensors for detecting whether push disc generates axial deviation.

[0008] Preferably, the end face flange is fixedly installed on the stepped groove of the shell by end face bolts.

[0009] Preferably, the elastomer, wave foil and flat foil are respectively provided with six groups, and are evenly distributed along the annular array to form an annular structure.

[0010] Preferably, the elastomer, wave foil and flat foil are sequentially installed on the end face flange by flat foil bolts.

[0011] Preferably, the shell is evenly provided with a sensor mounting hole for mounting a sensor on the circumferential surface.

[0012] The displacement sensor is used to monitor whether the push disc generates axial deviation in real time. When the axial deviation of the push disc exceeds the rated value, the electroactive polymer in the corresponding elastomer is electrified to expand, so that the flat foil protrudes, thereby changing the air dynamic pressure distribution in the bearing chamber, increasing the air pressure in the direction of the flat foil protrusion, and making the push disc displace in the opposite direction. The push disc always rotates at the required position. The present application realizes the purpose of automatic axial adjustment of the rotating shaft during work.

[0013] The utility model has the advantages that:

[0014] (1) By using multiple displacement sensors, the axial deviation of the rotating shaft can be monitored in real time, and the measurement accuracy is high.

[0015] (2) By using the principle of air dynamic pressure, the axial deviation of the rotating shaft is corrected without contact, and the push disc has small wear.

[0016] (3) The electroactive polymer is arranged between the inner washer and the outer washer, avoiding direct contact between the wave foil and the electroactive polymer, and prolonging the service life. BRIEF DESCRIPTION OF DRAWINGS

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Fig. 1 Schematic structural diagram of an automatic axial adjustment bearing chamber for the rotating shaft of an air suspension blower provided by an embodiment of the present invention;

[0019] Fig. 2 Schematic structural diagram (cross-sectional view) of an automatic axial adjustment bearing chamber for the rotating shaft of an air suspension blower provided by an embodiment of the present invention.

[0020] Explanation of reference numerals:

[0021] 1-end face bolt; 2-end face flange; 3-elastomer, 3.1-outer washer, 3.2-electroactive polymer, 3.3-inner washer; 4-wire; 5-wave foil; 6-flat foil; 7-flat foil bolt; 8-thrust disk; 9-housing, 9.1-sensor mounting hole; 10-displacement sensor. [[ID=!16]]Detailed implementation manners

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0023] As Figs. 1-2 shown, an automatic axial adjustment bearing chamber for the rotating shaft of an air suspension blower

[0024] includes an end face flange 2 and a housing 9 provided with a stepped groove. The end face flange 2 is fixed on the end face of the upper part of the stepped groove, and an elastomer 3, a wave foil 5, and a flat foil 6 are sequentially installed at one end facing the stepped groove. A thrust disk 8 is installed between the flat foil 6 and the bottom surface of the stepped groove, and the thrust disk 8 is installed on the rotating shaft adapted to the bearing chamber. The elastomer 3 includes an inner washer 3.3, an electroactive polymer 3.2, and an outer washer 3.1 stacked in sequence from the inside to the outside. The electroactive polymer 3.2 in the elastomer 3 is connected to an external controller through a wire 4, and through holes for the wire to pass through are provided on both the elastomer 3 and the end face flange 2. A plurality of displacement sensors 10 for detecting whether the thrust disk 8 generates an axial offset are provided on the housing 9.

[0025] It should be noted that the term "Detailed implementation manners" in Chinese in ID=16 is translated as "Detailed implementation manners" in English here. If there is a more accurate or preferred translation in the context of patent texts, it can be adjusted accordingly.The end face flange 2 is fixedly installed on the stepped groove of the shell 9 through the end face bolt 1.

[0026] The elastic body 3, the wave foil 5 and the flat foil 6 are respectively provided with six groups and are evenly distributed along the annular array to form an annular structure.

[0027] The elastic body 3, the wave foil 5 and the flat foil 6 are sequentially installed on the end face flange 2 through the flat foil bolt 7.

[0028] Six sensor mounting holes 9.1 for mounting the sensor 10 are evenly arranged on the circumferential surface of the shell 9.

[0029] During work, the displacement sensor 10 monitors whether the thrust disc 8 produces axial deviation in real time, and when the axial deviation of the thrust disc 8 exceeds the rated value, the electroactive polymer 3.2 in the elastic body 3 corresponding to the angle is electrified to expand (when it is detected that the thrust disc needs to move, the electroactive polymer is electrified to expand, and then the air dynamic pressure effect is utilized to make the thrust disc drive the shaft to move axially), so that the flat foil 6 protrudes, thereby changing the air dynamic pressure distribution in the bearing chamber, increasing the air pressure in the direction of the protrusion of the flat foil 6, and making the thrust disc 8 displace in the opposite direction under stress, so that the thrust disc 8 always rotates at the required position; when the axial deviation of the thrust disc 8 is within the rated range of the displacement sensor 10, the power supply to the electroactive polymer 3.2 is stopped, so that the electroactive polymer 3.2 is in the original thickness; thereby achieving the purpose of automatic axial adjustment of the shaft during work.

[0030] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Therefore, if these modifications and variations of the present application belong to the scope of the claims of the present application and the equivalent technologies thereof, the present application also intends to include these modifications and variations.

Claims

1. An air-suspension-blower-rotor-axial-adjustment-bearing-chamber, characterized by: The utility model relates to a kind of elastic body, wave foil and flat foil, including end face flange (2) and shell (9) with stepped groove, the end face flange (2) is fixed on the end face of stepped groove upper part and its end face towards stepped groove is installed with elastomer (3), wave foil (5) and flat foil (6) in turn;The flat foil (6) is equipped with thrust disc (8) between stepped groove bottom surface, the thrust disc (8) is installed on the rotating shaft of bearing chamber adaptation;The elastomer (3) includes inner washer (3.3), electroactive polymer (3.2) and outer washer (3.1) from inside to outside in turn, and the electroactive polymer (3.2) in the elastomer (3) is connected with external controller by wire (4), and the elastomer (3) and end face flange (2) are all opened and passed through the through hole for wire;Shell (9) is equipped with a plurality of displacement sensors (10) for detecting whether thrust disc (8) generates axial deviation.

2. An air bearing for an air bearing fan shaft automatic axial adjustment bearing chamber as claimed in claim 1, characterized in that: The end face flange (2) is fixedly installed on the stepped groove of shell (9) by end face bolt (1).

3. An air bearing for an air bearing fan shaft automatic axial adjustment bearing chamber as claimed in claim 1, wherein: The elastomer (3), wave foil (5), flat foil (6) are respectively equipped with six groups, and are evenly distributed along annular array to form annular structure.

4. An air bearing for an air bearing fan shaft automatic axial adjustment bearing chamber as claimed in claim 1, wherein: The elastomer (3), wave foil (5), flat foil (6) are sequentially installed on the end face flange (2) by flat foil bolt (7).

5. An air bearing for an air bearing fan shaft automatic axial adjustment bearing chamber as claimed in claim 1, wherein: The shell (9) is evenly provided with 6 sensor mounting holes (9.1) for mounting sensor (10) on circumferential surface.

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