CN201517503U - Swirl air compressor for changing mounting position of main bearing - Google Patents
Swirl air compressor for changing mounting position of main bearing Download PDFInfo
- Publication number
- CN201517503U CN201517503U CN2009202681312U CN200920268131U CN201517503U CN 201517503 U CN201517503 U CN 201517503U CN 2009202681312 U CN2009202681312 U CN 2009202681312U CN 200920268131 U CN200920268131 U CN 200920268131U CN 201517503 U CN201517503 U CN 201517503U
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- bent axle
- air compressor
- moving plate
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Abstract
A swirl air compressor for changing the mounting position of a main bearing, comprises a machine frame, a static tray, a movable tray, a crankshaft, a sealing member as well as an air inlet and outlet, wherein the static tray is fixed on the machine frame by a fastener, the movable tray and the static tray are combined to form an air compression cavity, an eccentric portion of the crankshaft is inserted into a hub of the movable tray, the crankshaft is arranged in the machine frame by a main bearing and a supplementary bearing, a bearing is arranged between the eccentric portion of the crankshaft and the hub of the movable tray, and the main bearing is arranged between the eccentric portion of the crankshaft and a main balance block. According to the utility model, due to the reasonable arrangement of the main balance block of the crankshaft and the main bearing, under the condition of unchanging the inertia moment of the crankshaft, the deflection and bending moment of the crankshaft in the operation can be decreased, the applied load of the bearing can be reduced, the operation precision of the movable tray can be improved, thus the compressor can work accurately, safely, stably and reliably, and the swirl air compressor can be widely used for various swirl type compressors.
Description
Technical field
The utility model relates to the scroll air compressor of a kind of scroll air compressor, particularly a kind of oil spout, is a kind of scroll air compressor that changes main-bearing mounting position specifically.
Background technique
Scroll air compressor with its efficient height, noise is low, volume is little, help energy-conservation and protection advantage such as environment and be widely used in the compressed-air actuated occasions of industry needs such as industry, agricultural, communications and transportation.Scroll air compressor mainly moves part whirlpool dish and has only dirty to close, and do not produce wearing and tearing, thereby the life-span is longer than piston type, screw compressor, is pneumatic machinery ideal power source.In scroll air compressor, main operation part whirlpool dish is divided into Moving plate and quiet dish, establish the vortex sheet in Moving plate and the quiet dish, usually, being bonded to each other by Moving plate and quiet dish forms compression chamber, when Moving plate is driven when certain circular path is done translation by bent axle, Moving plate vortex sheet moves relative to quiet dish vortex sheet, promptly move and change its volume, thereby suck, compress, discharge, finish compressed-air actuated process by both formed compression chambers.
Fig. 1 illustrates the general configuration of existing scroll air compressor, quiet dish 1 ' and Moving plate 2 ' combination formation internal compression chamber, quiet dish 1 ' be fixed on frame 6 ' on, Moving plate 2 ' frame 6 ' support platform on, bent axle 12 ' eccentric part insert Moving plate 2 ' wheel hub in.Compressor is put structure for crouching, and makes partition ring 3 ' motion vertically.Bent axle 12 ' by main bearing 5 ' and supplementary bearing 7 ' frame 6 ' inner chamber, frame 6 ' end assembling bonnet 10 ', before have mechanical seal 11 ', at bent axle 12 ' end assembling belt pulley 9 ' and secondary equilibrium block 8a ', 8b ', main equilibrium block 4 ' frame 6 ' in, establish between Moving plate wheel hub and crankshaft eccentric portion bearing 13 '.
As shown in Figure 1, existing scroll air compressor, its bent axle master equilibrium block 4 ' be installed in crankshaft eccentric portion and main bearing 5 ' between, this structure make main bearing 5 ' with crankshaft eccentric portion bearing 13 ' distance excessive, make main bearing 5 ', supplementary bearing 7 ' stressed deterioration, influence Moving plate 2 ' running precision and sealability, therefore, for satisfying the life-span condition, the diameter design of major and minor bearing is bigger, thereby make the overall dimensions of compressor increase, cost improves; On the other hand, this structure causes from main bearing 5 ' long to the cantilever of eccentric part, make bent axle 12 ' stressed deterioration, for reducing the diameter that distortion must increase bent axle, thereby the weight of bent axle is increased, cost improves, simultaneously because the stressed deterioration of each bearing and bent axle causes the vibration of compressor and noise to increase.
Summary of the invention
The technical problems to be solved in the utility model is, in existing scroll air compressor, bent axle and shaft strength load are bigger, the shortcoming of the huge heaviness of overall structure, provide that a kind of crankshaft designs is reasonable, the scroll air compressor of light and handy practical, the safe and reliable change main-bearing mounting position of overall structure, to overcome deficiency of the prior art.
The technological scheme that its technical problem that solves the utility model adopts is: a kind of scroll air compressor that changes main-bearing mounting position, comprise frame, quiet dish, Moving plate, bent axle, Sealing and air-breathing, relief opening, be fixed on the frame with fastening piece on the quiet dish, combine the compression chamber that forms air with quiet dish by Moving plate; The eccentric part of bent axle inserts in the wheel hub of Moving plate, bent axle is installed in the frame with main bearing and supplementary bearing, between the wheel hub of the eccentric part of bent axle and Moving plate, establish bearing, main bearing in the mounting point on the bent axle between the mounting point of the eccentric part of bent axle and main equilibrium block.
In the scroll air compressor of above-mentioned change main-bearing mounting position, the eccentric part of main bearing next-door neighbour bent axle.Supplementary bearing is arranged on the terminal part of frame away from quiet dish.
In the scroll air compressor of above-mentioned change main-bearing mounting position, described frame comprises forebay and rear bay, and the wheel hub of described Moving plate and the eccentric part of bent axle and main equilibrium block are contained in the forebay, and supplementary bearing is arranged on the terminal part of rear bay.
In the scroll air compressor of above-mentioned change main-bearing mounting position, establish bonnet, shaft seal is housed in the bonnet at the end of rear bay.Quiet dish and forebay sealing assembling, forebay and rear bay sealing assembling, secondary equilibrium block is arranged on the end of bent axle, and the end of described bent axle stretches out outside the seal chamber of being made up of quiet dish, forebay, rear bay, bonnet.
The beneficial effects of the utility model are:
By the topology layout of bent axle master equilibrium block, main bearing is rationally adjusted, under the constant situation of bent axle moment of inertia, the amount of deflection and the moment of flexure of bent axle operation have been reduced, also reduced the stressed load of bearing, improved the running precision of Moving plate, made compressor operating accurate more, safe, stable, reliable.
The utility model has been optimized the global design of scroll air compressor, improves the force structure of bearing and bent axle, thereby can reduce the diameter of bent axle and bearing, reaches the light-weighted purpose of compressor, and can reduce the vibration and the noise of compressor.
Description of drawings
Fig. 1 is the structural representation of the scroll air compressor of prior art;
Fig. 2 is the structural representation of the scroll air compressor of change main-bearing mounting position described in the utility model.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples, and accompanying drawing 2 each parts of mesoscale eddies air compressor are numbered as follows:
Quiet dish 1 Moving plate 2 Moving plate wheel hubs 21 partition rings 3
Bent axle 4 forebaies 5 main equilibrium block 6 rear bays 7
Bonnet 8 gland seal assemblies 81 secondary equilibrium block 9 quiet dish set screws 10
The air-breathing steering channel 12 that intakeport 11 compression chambers of quiet dish are communicated with
Bearing 14 main bearings 15 supplementary bearings 17 forebay shells 51
Forebay cylindrical part 52 support collars 53 grooves 54
In the prior art, the structure of scroll air compressor as shown in Figure 1, by quiet dish 1 ', Moving plate 2 ', bent axle 12 ', frame 6 ', bonnet 10 ' composition, quiet dish 1 ' form the compression chamber of an air with Moving plate 2 ' combine, quiet dish 1 ' be fixed on frame 6 ' on, bent axle 12 ' be assemblied in frame 6 ' in, by main bearing 5 ' with supplementary bearing 7 ' supporting, axis body one end is an eccentric part, insert in the wheel hub of Moving plate, between eccentric part and wheel hub be bearing 13 ', main equilibrium block 4 ' be arranged on eccentric part and main bearing 5 ' between, in frame, be provided with and dodge the rotation that the space is enough to hold equilibrium block.This structure make main bearing 5 ' with crankshaft eccentric portion bearing 13 ' distance excessive, make main bearing 5 ', supplementary bearing 7 ' stressed deterioration, on the other hand, from main bearing 5 ' long to the cantilever of eccentric part, make bent axle 12 ' stressed deterioration.
The utility model is in order to solve the problem of above-mentioned existence, compressor arrangement is made improvements, and as shown in Figure 2, quiet dish 1 is installed on the forebay 5 by set screw, be furnished with sealed member on both surface of contact, quiet thus dish 1 and forebay 5 end faces have formed sealing.Equally, forebay 5 and rear bay 7, rear bay 7 and bonnet 8 form sealing by same mode.In the bonnet 8 interference gland seal assembly 11 is installed, it is located by circlip.Formed the cavity of a sealing thus in compressor inside by quiet dish 1, forebay 5, rear bay 7, bonnet 8, bent axle 4 and each sealed member, the air-breathing steering channel 12 that the upper side of quiet dish 1 offers intakeport 11 and is communicated with compression chamber, the position that steering channel 12 is offered makes the sealed cavity with being chatted of Moving plate 2 air-breathing steering channel 12 intermittences (or continuous) in movement process be communicated with, thereby forms the chamber of a low pressure when compressor runs well.
The center of rear bay 7 offers the center hole than the slightly larger in diameter of bent axle corresponding position, and supplementary bearing 17 is installed in the rear portion of rear bay 7.Thus, because the adjacent crankshaft eccentric of main bearing 15 portion, supplementary bearing 17 is away from main bearing 15, distance between major and minor bearing is increased, thereby the stressed of bearing will significantly reduce, and improve the life-span of bearing and improve reliability, therefore when design, can select small-sized bearing, reduced the diameter of bearing, reduced cost, simultaneously because the integral arrangement compactness, make under the situation that guarantees the compressor operation balance, major and minor equilibrium block weight saving has reduced the cost of product, has improved competitive ability.
Forebay 5 centers have been designed a cylindrical part 52 in the utility model, Moving plate wheel hub 21 can move therein and not produce interference with forebay 5, the top of cylindrical part 52 is that the projection of an annular is the support collar 53 of forebay, thus, the support collar of frame is the center of close Moving plate, distortion was minimum after Moving plate 2 was compressed the axial force of gas, reduced the internal leakage of pressurized gas to greatest extent, improved the performance of compressor, the face pressure ratio of forebay support collar 53 is more even simultaneously, and reliability is improved.
The internal diameter of support collar 53 is greater than 1/3 of the Moving plate diameter in the utility model, and the external diameter of support collar 53 can farthest reduce the distortion of Moving plate thus less than 3/4 of the Moving plate diameter, optimize the stressed of support collar, reduce friction, make performance optimization, and guarantee that Moving plate moves stably.
Moving plate 2 slidably is supported on the support collar 53 of forebay, the front end of forebay 5 is a groove 54 at housing 51 and 52 of cylindrical part, partition ring 3 is installed between Moving plate 2 base plates and the groove 54, the upper surface of partition ring 3 has a pair of protruding key, both lines pass the center of ring, at the lower surface of partition ring 3 a pair of protruding key are arranged also, and are same, both lines pass the center of ring, two pairs of orthogonal (not shown)s of protruding key.All offering the keyway (not shown) that can cooperate installation cross ring key portion on the Moving plate 2 base plate end faces and on the groove 54, Moving plate 2 has guaranteed the radial location installation of Moving plate 2 with forebay 5 by the connection of partition ring 3.
Claims (6)
1. scroll air compressor that changes main-bearing mounting position, comprise frame, quiet dish (1), Moving plate (2), bent axle (4), Sealing and air-breathing, relief opening, quiet dish (1) is gone up and is fixed on the frame with fastening piece, combines the compression chamber that forms air by Moving plate (2) with quiet dish (1); The eccentric part of bent axle (4) inserts in the wheel hub of Moving plate (2), bent axle is installed in the frame with main bearing (15) and supplementary bearing (17), establish bearing (13) between the wheel hub of the eccentric part of bent axle and Moving plate, it is characterized in that: main bearing (15) is positioned between the mounting point of the eccentric part of bent axle (4) and main equilibrium block (6) in the mounting point on the bent axle.
2. according to the scroll air compressor of the described change main-bearing mounting position of claim 1, it is characterized in that: the eccentric part of main bearing (15) next-door neighbour's bent axle (4).
3. according to the scroll air compressor of the described change main-bearing mounting position of claim 2, it is characterized in that: described supplementary bearing (17) is arranged on the terminal part of frame away from quiet dish (1).
4. according to the scroll air compressor of the described change main-bearing mounting position of claim 3, it is characterized in that: described frame comprises forebay (5) and rear bay (7), the eccentric part of the wheel hub of described Moving plate (2) and bent axle (4) and main equilibrium block (6) are contained in the forebay (5), and supplementary bearing (17) is arranged on the terminal part of rear bay (7).
5. according to the scroll air compressor of the described change main-bearing mounting position of claim 4, it is characterized in that: establish bonnet (8) at the end of rear bay (7), shaft seal is housed in the bonnet.
6. according to the scroll air compressor of the described change main-bearing mounting position of claim 5, it is characterized in that: described quiet dish (1) and forebay (5) sealing assembling, forebay (5) and rear bay (7) sealing assembling, secondary equilibrium block (9) is arranged on the end of bent axle, and the end of described bent axle stretches out outside the seal chamber of being made up of quiet dish (1), forebay (5), rear bay (7), bonnet (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202681312U CN201517503U (en) | 2009-10-31 | 2009-10-31 | Swirl air compressor for changing mounting position of main bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202681312U CN201517503U (en) | 2009-10-31 | 2009-10-31 | Swirl air compressor for changing mounting position of main bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201517503U true CN201517503U (en) | 2010-06-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202681312U Expired - Fee Related CN201517503U (en) | 2009-10-31 | 2009-10-31 | Swirl air compressor for changing mounting position of main bearing |
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| CN (1) | CN201517503U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763632A (en) * | 2015-04-08 | 2015-07-08 | 上海磁浮交通发展有限公司 | Balance method of oil-free scroll air compressor |
-
2009
- 2009-10-31 CN CN2009202681312U patent/CN201517503U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763632A (en) * | 2015-04-08 | 2015-07-08 | 上海磁浮交通发展有限公司 | Balance method of oil-free scroll air compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100630 Termination date: 20181031 |
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| CF01 | Termination of patent right due to non-payment of annual fee |