CN201133351Y - Single screw compressor main unit structure - Google Patents
Single screw compressor main unit structure Download PDFInfo
- Publication number
- CN201133351Y CN201133351Y CNU2007201988610U CN200720198861U CN201133351Y CN 201133351 Y CN201133351 Y CN 201133351Y CN U2007201988610 U CNU2007201988610 U CN U2007201988610U CN 200720198861 U CN200720198861 U CN 200720198861U CN 201133351 Y CN201133351 Y CN 201133351Y
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- Prior art keywords
- bearing
- star
- wheel assembly
- end bearing
- single screw
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- Expired - Fee Related
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Abstract
The utility model relates to a main body structure of a single screw compressor, which consists of a casing, a main shaft, a cylinder screw and two star wheel components; wherein, a front end bearing seat and a back end bearing seat are fixed on the casing; the main shaft is fixed on the casing through the bearings in the front end bearing seat and the back end bearing seat; by an oil seal fixed on the main shaft, the cylinder screw is fixed on the main shaft; the two star wheel components are fixed on the two sides of the cylinder screw and formed two groups of engagement pair; the working volume of the main body is composed of the screw groove of the cylinder screw, the inner cavity of the casing, and the crest, the side and the separation plane of the star wheel components, and also comprises an adjustment flange which is fixed on the back end bearing seat through a bolt. The utility model enhances the performance of the main body of the single screw compressor, prolongs the service life, increases the reliability and stability, and meanwhile improves the manufacturability of the assembly and the maintenance of main body.
Description
Technical field
The utility model relates to single screw compressor, particularly relates to a kind of main machine structure of single screw compressor.
Background technique
The single screw compressor main frame, has good equilibrium of forces performance, unique advantages such as compact structure, vibration and dry sound are little, it mainly is presented as screw rod radial force and axial autobalance, screw rod drives the star-wheel motion, only need overcome very little frictional force,, enjoy the attention of compressor industry so the stress of screw-bearing is good in the single screw compressor main frame.
The single screw compressor main machine structure is formed engagement by two pairs of star-wheel assemblies of a cylindrical screw and two balanced configurations and is paid, and is contained in the casing.The screw channel of screw rod, chassis cavity and star-wheel tooth top, side, end face (with the division surface place) constitute swept volume.During running, power passes on the screw axis, drives the star-wheel rotation by screw rod, finishes air-breathing, compression, exhaust process.
One, in the main frame internal structure of general single screw compressor, the centering location of screw rod and casing mainly is that forward adjusting bearing collar or adjusting strip carry out:
As Fig. 1, utilize two to adjust the axial dimension that nuts 10 are regulated mobile screw, reach the orientation type with the host shell horizontal centring, more commonly used, but in actual the use, this form machining accuracy is difficult to guarantee that the on-stream location dimension of compressor easily changes, and makes assembly precision be damaged, and cause movement parts engagement situation to worsen, quickened the wearing and tearing and the damage of spider piece, the special location that will reach centering at the user scene, very uneasy.
As Fig. 2, and utilization changes the thickness of front end adjusting strip 11, reach the localization method of screw rod and host shell horizontal centring, though above problem can not occur, but owing to housing, the influence of main axis length tolerance of size, the difficult control of the thickness size of adjusting strip, the main frame assembly technology is but not as first method simultaneously.
Two, in the transmission system of compressor, generally can be divided into direct transmission and belt transmission, the bel-drivenn mode, benefit is, after can changing the rotating speed of screw rod by the belt pulley of different-diameter, reach and only use same main frame, just can reach the compressor bank of different displacements and change the axle envelope and only need unload belt pulley earlier and get final product, be easier to.When bearing of motor damages, can not bring disaster to continuous host part, for a long time, the single screw compressor of little discharge capacity (1m3-3m3,4m3-6m3) substantially all adopts belt transmission.
Yet after the employing belt transmission, though by avoiding excessive startup tension force, in the hope of reducing the load of motor to screw-bearing, in fact, screw rod affix a radial force, make the stress variation of screw-bearing in the single screw compressor main frame.
Three, as Fig. 1,2, single screw compressor main frame shaft end seal is to adopt a kind of self tightening lip shape sealing, and it is made up of rubber lip, metal frame and spring ring, directly is enclosed within on the main shaft, and its function is an oil pocket and extraneous the isolation, and internally oil sealing is externally dustproof.Because it is simple in structure, the characteristics of convenient disassembly, good seal performance are widely used.Yet the sealing principle of oil sealing and O type circle are similar, can cause the main shaft surface tear, even cause heavy wear, and then the seal failure leakage of oil, must carry out metal spraying to the main shaft axle journal in case of necessity after, again through repairing to original size.
Four, single screw compressor star-wheel assembly, its gear piece, center perpendicular to cylindrical screw, enter the screw slot volume from the star-wheel flank, to leaving the screw slot volume, about 120 ° of the scope that the work of star-wheel assembly tooth is rotated, under the situation of high speed rotating (3000/min) and multiple tooth (11 tooth) distribution, the star-wheel assembly can be subjected to flutter, and the star-wheel tooth is as long as on part angle or position, and the matching gap of the star-wheel assembly flank of tooth and screw slot or end face (with the division surface place) changes and all can cause vibration.And then cause problems such as leakage that machine life is seriously descended.
Fig. 3 is to adopt to increase the way that spring pressure all increases face pressure, utilizes the adjustment bolt 12 and spring 13 specific pressures on the right side, reaches suitable matching gap, and permanent operation is subjected to the influence of alternating stress, and spring can be weak, and matching gap can change.
Fig. 4, the cancellation spring, the problem that overcomes the spring weakness with spacer 14 at star-wheel assembly diaxon bearing and host shell end face better but the requirement on machining accuracy of the axial dimension of the axle center of and host shell relative to host shell diaxon bearing end face or star-wheel assembly is very high, practical set is difficulty.
Summary of the invention
Technical problem to be solved of the present utility model is exactly the main machine structure that a kind of single screw compressor is provided in order to overcome above-mentioned existing in prior technology defective.
The purpose of this utility model can be achieved through the following technical solutions: a kind of main machine structure of single screw compressor, comprise casing, main shaft, cylindrical screw and two star-wheel assemblies, be fixed with front end bearing support and rear end bearing seat on the described casing, described main shaft by the bearing fixing in front end bearing support and the rear end bearing seat in casing, the oil sealing sealing of this main shaft by being fixed thereon, described cylindrical screw is fixed on the main shaft, described two star-wheel assemblies are fixed in the both sides of cylindrical screw, constituting two groups of engagements pays, the screw channel of described cylindrical screw, the tooth top of the inner chamber of casing and star-wheel assembly, side, division surface constitutes the swept volume of main frame, it is characterized in that, also comprise the adjustment flange, this flange by bolt on the rear end bearing seat.
Described star-wheel assembly comprises star-wheel assembly front-end bearing pedestal, star-wheel assembly rear bearing block, screw axis by the bearing fixing in the antero posterior axis bearing, and be fixed in spider piece on the screw axis, described star-wheel assembly front-end bearing pedestal, be equipped with in the star-wheel assembly rear bearing block with before, the briquetting I that rear bearing tightly touches, briquetting II, and be equipped with axial through hole on the diaxon bearing, before described, be equipped with respectively in the back through hole and regulate bolt I, regulate bolt II, this regulates bolt I, regulate bolt II respectively with briquetting I, briquetting II tightly touches, be arranged with spring II on the described adjusting bolt II, the two ends of this spring II and briquetting II, star-wheel assembly rear bearing block tightly touches mutually.
Described spider piece is by regulating bolt I, regulate bolt II, and spring II symmetry is positioned the both sides of cylindrical screw, and perpendicular to the center of cylindrical screw.
Be provided with protecting jacket between described oil sealing and the main shaft.
Bearing in the described front end bearing support is a roller bearing.
Bearing in the described rear end bearing seat is back-to-back bearing.
Described star-wheel assembly fore bearing is the biserial angular contact bearing.
Described star-wheel assembly rear bearing is a deep groove ball bearing.
Compared with prior art, the utility model has improved the performance of single screw compressor main frame, has prolonged working life, increased the reliability and stability of work, has improved the manufacturability of main frame assembling, maintaining simultaneously.
Description of drawings
Fig. 1 is the main machine structure schematic representation of existing first kind of single screw compressor;
Fig. 2 is the main machine structure schematic representation of existing second kind of single screw compressor;
Fig. 3 is the main machine structure schematic representation of existing the third single screw compressor;
Fig. 4 is the main machine structure schematic representation of existing the 4th kind of single screw compressor;
Fig. 5 is a structural representation of the present utility model;
Fig. 6 is the structural representation of star-wheel assembly of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 3, a kind of main machine structure of single screw compressor, comprise casing 1, main shaft 2, cylindrical screw 3 and two star-wheel assemblies 4, be fixed with front end bearing support 5 and rear end bearing seat 6 on the described casing 1, described main shaft 2 by the bearing fixing in front end bearing support 5 and the rear end bearing seat 6 in casing 1, oil sealing 7 sealings of this main shaft 2 by being fixed thereon, described cylindrical screw 3 is fixed on the main shaft 2, described two star-wheel assemblies 4 are fixed in the both sides of cylindrical screw 3, constituting two groups of engagements pays, the screw channel of described cylindrical screw 3, the tooth top of the inner chamber of casing 1 and star-wheel assembly 4, side, division surface constitutes the swept volume of main frame, also comprise and adjust flange 8, this flange 8 by bolt on rear end bearing seat 6.
Described star-wheel assembly 4 comprises star-wheel assembly front-end bearing pedestal 41, star-wheel assembly rear bearing block 42, screw axis 43 by the bearing fixing in the antero posterior axis bearing, and be fixed in spider piece 44 on the screw axis, described star-wheel assembly front-end bearing pedestal 41, be equipped with in the star-wheel assembly rear bearing block 42 with before, the briquetting I45 that rear bearing tightly touches, briquetting II46, and be equipped with axial through hole on the diaxon bearing, before described, be equipped with respectively in the back through hole and regulate bolt I47, regulate bolt II48, this regulates bolt I47, regulate bolt II48 respectively with briquetting I45, briquetting II46 tightly touches, be arranged with spring II51 on the described adjusting bolt II48, the two ends of this spring II51 and briquetting II50, star-wheel assembly rear bearing block 42 tightly touches mutually; Described spider piece 44 is by regulating bolt I47, regulate bolt II48, and spring II49 symmetry is positioned the both sides of cylindrical screw 3, and perpendicular to the center of cylindrical screw 3; Be provided with protecting jacket 9 between described oil sealing 7 and the main shaft 2; Bearing in the described front end bearing support 5 is a roller bearing; Bearing in the described rear end bearing seat 6 is back-to-back bearing; Described star-wheel assembly fore bearing 41 is the biserial angular contact bearing; Described star-wheel assembly rear bearing 42 is a deep groove ball bearing.
The characteristics of the utility model structure:
1, the bearing that fills in the front end bearing block changes cylinder roller bearing into by former angular contact axle bearing series;
2, utilize change rear end adjustment to send out blue thickness, reach screw rod horizontal centring location;
3, between the oil sealing main shaft, increase protective sleeve;
4, utilize star wheel component two ends adjusting bolts (I, II), spring II reaches the spider piece vertical centering The location;
5, described star wheel component main part is the biserial angular contact bearing by an end, and an end is the deep groove ball bearing group Become.
The advantage of the utility model structure: under the condition that keeps the existing advantage of single screw compressor, further Host performance is improved, and work safety is stable, the life-span is longer.
Claims (8)
1. the main machine structure of a single screw compressor, comprise casing, main shaft, cylindrical screw and two star-wheel assemblies, be fixed with front end bearing support and rear end bearing seat on the described casing, described main shaft by the bearing fixing in front end bearing support and the rear end bearing seat in casing, the oil sealing sealing of this main shaft by being fixed thereon, described cylindrical screw is fixed on the main shaft, described two star-wheel assemblies are fixed in the both sides of cylindrical screw, constituting two groups of engagements pays, the screw channel of described cylindrical screw, the tooth top of the inner chamber of casing and star-wheel assembly, side, division surface constitutes the swept volume of main frame, it is characterized in that, also comprise the adjustment flange, this flange by bolt on the rear end bearing seat.
2. the main machine structure of a kind of single screw compressor according to claim 1, it is characterized in that, described star-wheel assembly comprises star-wheel assembly front-end bearing pedestal, star-wheel assembly rear bearing block, screw axis by the bearing fixing in the antero posterior axis bearing, and be fixed in spider piece on the screw axis, described star-wheel assembly front-end bearing pedestal, be equipped with in the star-wheel assembly rear bearing block with before, the briquetting I that rear bearing tightly touches, briquetting II, and be equipped with axial through hole on the diaxon bearing, before described, be equipped with respectively in the back through hole and regulate bolt I, regulate bolt II, this regulates bolt I, regulate bolt II respectively with briquetting I, briquetting II tightly touches, be arranged with spring II on the described adjusting bolt II, the two ends of this spring II and briquetting II, star-wheel assembly rear bearing block tightly touches mutually.
3. the main machine structure of a kind of single screw compressor according to claim 2 is characterized in that, described spider piece is by regulating bolt I, regulate bolt II, and spring II symmetry is positioned the both sides of cylindrical screw, and perpendicular to the center of cylindrical screw.
4. according to the main machine structure of claim 1 or 3 described a kind of single screw compressors, it is characterized in that, be provided with protecting jacket between described oil sealing and the main shaft.
5. the main machine structure of a kind of single screw compressor according to claim 4 is characterized in that, the bearing in the described front end bearing support is a roller bearing.
6. the main machine structure of a kind of single screw compressor according to claim 4 is characterized in that, the bearing in the described rear end bearing seat is back-to-back bearing.
7. the main machine structure of a kind of single screw compressor according to claim 3 is characterized in that, described star-wheel assembly fore bearing is the biserial angular contact bearing.
8. the main machine structure of a kind of single screw compressor according to claim 3 is characterized in that, described star-wheel assembly rear bearing is a deep groove ball bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201988610U CN201133351Y (en) | 2007-12-04 | 2007-12-04 | Single screw compressor main unit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201988610U CN201133351Y (en) | 2007-12-04 | 2007-12-04 | Single screw compressor main unit structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201133351Y true CN201133351Y (en) | 2008-10-15 |
Family
ID=40061624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201988610U Expired - Fee Related CN201133351Y (en) | 2007-12-04 | 2007-12-04 | Single screw compressor main unit structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201133351Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101725530A (en) * | 2009-12-07 | 2010-06-09 | 麦克维尔空调制冷(苏州)有限公司 | Method for adjusting star wheel-rotor engagement accuracy of single screw rod type refrigerating compressor |
| CN101892986A (en) * | 2010-07-06 | 2010-11-24 | 阜新金昊空压机有限公司 | Semi-enclosed single-screw air compressor |
| CN102678567A (en) * | 2012-02-03 | 2012-09-19 | 贵州中电振华精密机械有限公司 | Screw axial adjustment mechanism for single-screw compressor |
| DE102021004971A1 (en) | 2020-10-20 | 2022-04-21 | Sew-Eurodrive Gmbh & Co Kg | Transmission with a housing and a shaft unit |
-
2007
- 2007-12-04 CN CNU2007201988610U patent/CN201133351Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101725530A (en) * | 2009-12-07 | 2010-06-09 | 麦克维尔空调制冷(苏州)有限公司 | Method for adjusting star wheel-rotor engagement accuracy of single screw rod type refrigerating compressor |
| CN101725530B (en) * | 2009-12-07 | 2014-07-30 | 麦克维尔空调制冷(苏州)有限公司 | Method for adjusting star wheel-rotor engagement accuracy of single screw rod type refrigerating compressor |
| CN101892986A (en) * | 2010-07-06 | 2010-11-24 | 阜新金昊空压机有限公司 | Semi-enclosed single-screw air compressor |
| CN102678567A (en) * | 2012-02-03 | 2012-09-19 | 贵州中电振华精密机械有限公司 | Screw axial adjustment mechanism for single-screw compressor |
| DE102021004971A1 (en) | 2020-10-20 | 2022-04-21 | Sew-Eurodrive Gmbh & Co Kg | Transmission with a housing and a shaft unit |
| WO2022084030A1 (en) | 2020-10-20 | 2022-04-28 | Sew-Eurodrive Gmbh & Co. Kg | Gearing having a housing and a shaft unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI LINUO PRECISION TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: SHANGHAI SCHNEIDER-SUNSHINE MACHINERY (GROUP) CO., LTD. Effective date: 20140701 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 200949 BAOSHAN, SHANGHAI TO: 201900 BAOSHAN, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140701 Address after: 201900 Shanghai District, Baoshan District, Shanghai Road, No. 3, district 9088, A459 Patentee after: Shanghai Linuo Precision Technology Co. Ltd. Address before: 200949 No. 9088 Hu Tai Road, Shanghai Patentee before: Shanghai Schneider0Sunshine Machinery Group Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI SCHNEIDER-SUNSHINE MACHINERY (GROUP) CO., Free format text: FORMER OWNER: SHANGHAI LINUO PRECISION TECHNOLOGY CO., LTD. Effective date: 20141203 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 201900 BAOSHAN, SHANGHAI TO: 200949 BAOSHAN, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20141203 Address after: 200949 Shanghai City, Baoshan District Fanlu Shanghai No. 53 Building 1, building 8 Patentee after: Shanghai Schneider0Sunshine Machinery Group Co., Ltd. Address before: 201900 Shanghai District, Baoshan District, Shanghai Road, No. 3, district 9088, A459 Patentee before: Shanghai Linuo Precision Technology Co. Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081015 Termination date: 20161204 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |