CN201246308Y - Bearing mechanism of single screw compressor inner star wheel rotor - Google Patents
Bearing mechanism of single screw compressor inner star wheel rotor Download PDFInfo
- Publication number
- CN201246308Y CN201246308Y CNU2008201895517U CN200820189551U CN201246308Y CN 201246308 Y CN201246308 Y CN 201246308Y CN U2008201895517 U CNU2008201895517 U CN U2008201895517U CN 200820189551 U CN200820189551 U CN 200820189551U CN 201246308 Y CN201246308 Y CN 201246308Y
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- Prior art keywords
- bearing
- ball
- cover
- push rod
- star
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- Expired - Lifetime
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- 239000000446 fuel Substances 0.000 claims abstract description 19
- 230000001050 lubricating effect Effects 0.000 claims abstract description 12
- 239000006071 cream Substances 0.000 claims description 15
- 239000000314 lubricant Substances 0.000 claims description 13
- 239000000945 filler Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 abstract 3
- 239000010687 lubricating oil Substances 0.000 abstract 2
- 230000035515 penetration Effects 0.000 abstract 2
- 238000005461 lubrication Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 6
- 239000003595 mist Substances 0.000 description 3
- 230000000368 destabilizing effect Effects 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
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- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The utility model discloses a bearing mechanism for a star-wheel rotor in a single-screw compressor, which comprises a supporting seat and a star-wheel rotor, wherein, the supporting seat is a cavity casing structure with an open bottom end, a bearing end cover is installed in the cavity body of the supporting seat, the star-wheel rotor is supported in the supporting seat through a bearing, a pressure spring propped against a bearing end cover is arranged in the supporting seat, the pre-tightening force is applied to the bearing by the pressure spring through the bearing end cover, a push rod is arranged on the supporting seat, one end of the push rod is fixed on the supporting seat, the other end of the push rod is adjacent to the bearing end cover, and when the bearing end cover is under the pressure in the direction of the push rod, the push rod is propped against the bearing end cover. A fuel feeding valve is arranged on the supporting seat, the bearing end cover is provided with an oil penetration hole, and after the lubricating oil passes through an oil storage cavity formed by encircling the bearing end cover and the cavity body of the bearing, the lubricating oil flows to the lubricating cavity of the bearing through the oil penetration hole to lubricate the bearing. The utility model can effectively limit the axial movement or the swinging phenomenon of the bearing and has good lubricating effect.
Description
Technical field
The utility model relates to the gear mechanism in a kind of single screw compressor, is the gear mechanism of single screw compressor star-wheel rotor specifically.
Background technique
In the single screw compressor on prior art, cooperating between star wheel rotor and the screw rod requires very strict, and star wheel rotor or screw rod are let alone one and the proper functioning that displacement all can influence compressor occurred, can produce the dislocation collision phenomenon when serious, damage device.In the product using process of reality, the gear mechanism at the bracket axle two ends of star wheel rotor generally adopts pairing angular contact bearing and roller bearing to be used, perhaps single angular contact bearing and tapered roller bearing are used, pairing bearing or single angular contact bearing are installed in the back side of star-wheel, bear the axial force that gas produces star-wheel when pressurized gas, the while is as the positioning action of star wheel rotor.Because pairing or angle contacting be the location of an end of restrictive axes, because axle in expanded by heating effect meeting elongation, so the other end will have end play, is used with the temperature compensation of making axle.When being roller bearing, adopt outer fixing, inner ring can move axially, free compensating axial clearance.When being tapered roller bearing, need add axial pre tightening force, also to leave end play simultaneously, best bet is to adopt spring action on the end face of tapered roller bearing here, can expire this two conditions simultaneously.The former scheme, since number of bearings, the bearing support complexity, and cost is higher; Latter's scheme, because processing and installation precision are required than higher, otherwise the tapered roller bearing cisco unity malfunction appears easily, be that the spring that causes in the operation process can not guarantee that bearing works in the tram, conical bearing occurs moving axially or dancing, at this moment, star wheel rotor also moves or swings the normal mated condition that influences star wheel rotor because of it, and then influences the proper functioning of compressor.In addition, in the single screw compressor of conventional art, the oil mist lubrication that the bearing of the star wheel rotor above housing all only adopts the star-wheel rotation to splash out, the mist of oil that splashes of depending merely on the bearing star-wheel carries out the oneself and lubricates, when big specification machine,, add it is the line contact because such circular cone or cylindrical bearing linear velocity are big, the heat that produces is big, the lack of lubrication phenomenon occurs, cause heating, burn out a bearing easily, lubrication effect is not good enough, can not satisfy the highi degree of accuracy running requirements of screw rod star-wheel mechanism.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of and can limit effectively that bearing moves axially or the gear mechanism of the single screw compressor star-wheel rotor of dancing, high lubricating effect.
Goal of the invention of the present utility model is achieved in that a kind of gear mechanism of single screw compressor star-wheel rotor, comprise bearing and star wheel rotor, bearing is the shell structure of a bottom end opening, in the cavity of bearing bearing (ball) cover is installed, star wheel rotor is bearing in the bearing by bearing, be provided with the pressure spring of roof pressure on bearing (ball) cover in the bearing, pressure spring applies pretightening force by bearing (ball) cover to bearing, it is characterized in that: on the described bearing push rod is housed, on the one end fixed bearing of push rod, the other end of push rod is near bearing (ball) cover, when bearing (ball) cover is subjected to pressure toward the push rod direction, push rod will roof pressure on bearing (ball) cover.
Described bearing is provided with fuel feeding valve, the filler opening of fuel feeding valve is connected by the nozzle opening on pipeline, joint, filter and the housing, the oil outlet of fuel feeding valve is communicated to the shoe cream room that the cavity of bearing (ball) cover and bearing surrounds, bearing (ball) cover has oil seepage hole, oil seepage hole is communicated with the lubricating cavity of shoe cream room and bearing, lubricant oil is after fuel feeding valve enters shoe cream room, and the lubricating cavity by oil seepage hole inflow bearing is lubricated bearing.
Have the excess oil release aperture on the wall body of described bearing, this excess oil release aperture is positioned on the chamber wall of shoe cream room.
Described pressure spring is installed between the cavity diapire of bearing (ball) cover and bearing.
Have the assembling screw coaxial with push rod on the described bearing (ball) cover, the aperture of assembling screw is less than the diameter of push rod.
Described push rod is a screw mandrel, screw mandrel and bearing are for being threaded, one end of screw mandrel reaches outside the bearing outward, turn screw mandrel and can adjust the close gap of screw mandrel and bearing (ball) cover, screw mandrel reaches the outer end of bearing outward and is provided with locking nut, the screw mandrel of adjusting the position can be locked on the bearing by tightening locking nut.
The utility model improves the gear mechanism of the single screw compressor star-wheel rotor of prior art, and its beneficial effect is:
(1) the technical program is by setting up push rod between bearing and bearing (ball) cover, when bearing because of in the thermal expansion effects of bracket axle or the operation process run into external force effect that destabilizing factor causes by outside folk prescription when promoting, bearing (ball) cover will overcome the gap of itself and push rod, roof pressure is on push rod, the folk prescription that has limited bearing has guaranteed the normal operation of star wheel rotor to moving.
(2) the utility model has restriction bearing folk prescription on the effect that moves, on bearing, have fuel feeding valve, have oil seepage hole on the bearing (ball) cover, make extraneous lubricant oil can pass through the lubricating cavity of fuel feeding valve, shoe cream room and oil seepage hole injection bearing, add in addition and force lubricating system to guarantee that bearing has enough lubricant oil, improve the lubrication effect of bearing, guaranteed the normal operation of compressor.
Description of drawings
Accompanying drawing 1 is in the utility model most preferred embodiment, the structural representation that star wheel rotor is installed up.
Accompanying drawing 2 is in the utility model most preferred embodiment, when star wheel rotor is installed down, and the structural representation of bottom.
When accompanying drawing 3 is worked for the utility model most preferred embodiment, the structural representation of push rod.
When accompanying drawing 4 is installed for the utility model most preferred embodiment, the push rod structure schematic representation of using instead.
Embodiment
The utility model will be further described below in conjunction with accompanying drawing.
With reference to the accompanying drawings 1 and shown in Figure 2, the gear mechanism of single screw compressor star-wheel rotor of the present utility model, it comprises bearing 1 and star wheel rotor 2, the screw engages transmission of star wheel rotor 2 and compressor is with pressurized gas, bearing 1 is the shell structure of a bottom end opening, and be installed on the housing of compressor, the opening end of bearing 1 is towards enclosure interior and as a supporting point of star wheel rotor 2.Bearing (ball) cover 3 is installed in the cavity of bearing 1, and star wheel rotor 2 is bearing on the bearing (ball) cover 3 by bearing 4, and bearing 4 is a tapered roller bearing, can bear thrust to a certain degree on star wheel rotor 2 axis.Be provided with the pressure spring 5 of roof pressure on bearing (ball) cover 3 in the bearing 1, the other end roof pressure of pressure spring 5 is at the diapire of bearing 1 cavity, pressure spring 5 promptly is installed between the cavity diapire of bearing (ball) cover 3 and bearing 1, for this reason, pressure spring 5 applies pretightening force by 3 pairs of bearings 4 of bearing (ball) cover, so that bearing (ball) cover 3 has enough pretightening force supporting star wheel rotors 2.In the utility model,, on described bearing 1, push rod 6 is housed in view of conventional art, on the one end fixed bearing 1 of push rod 6, the other end of push rod 6 is near bearing (ball) cover 3, and push rod 6 leaves certain close gap with bearing (ball) cover 3, with the bracket axle generation thermal expansion of compensation star wheel rotor 2.When bearing 4 run in because of the thermal expansion effects of bracket axle or operation process external force effect that destabilizing factor causes by outside folk prescription when promoting, bearing (ball) cover 3 will overcome the gap of itself and push rod 6, roof pressure is on push rod 6, the folk prescription that has limited bearing 4 has guaranteed the normal operation of star wheel rotor 2 to moving.In the present embodiment, push rod 6 is a screw mandrel, and as shown in Figure 3, screw mandrel and bearing 1 are for being threaded, and an end of screw mandrel reaches outward outside the bearing 1, turns the close gap that screw mandrel can be adjusted screw mandrel and bearing (ball) cover 3.Screw mandrel reaches bearing 1 an outer end outward and is provided with locking nut 11, the screw mandrel of adjusting the position can be locked on the bearing 1 by tightening locking nut 11.The utility model in other embodiments, this push rod 6 also can be polished rod or other supporting rod.
When star wheel rotor is installed up, as shown in Figure 1, also be provided with fuel feeding valve 7 on the bearing 1, fuel feeding valve 7 is located at the cavity diapire of bearing 1.The filler opening of fuel feeding valve 7 is connected with nozzle opening 15 on the housing, filter 16 by the sintering shot copper, joint 17, pipeline 18 etc. are connected with fuel feeding valve 7 during this time, the oil outlet of fuel feeding valve 7 is communicated to the shoe cream room 8 that the cavity of bearing (ball) cover 3 and bearing 1 surrounds, during this time, the oil outlet of fuel feeding valve 7 can be designed to a throttle nozzle structure according to actual specification size needs.Bearing (ball) cover 3 has oil seepage hole 12, oil seepage hole 12 is communicated with the lubricating cavity of shoe cream room 8 and bearing 4, make lubricant oil can pass through fuel feeding valve 7, shoe cream room 8 and oil seepage hole 12 injection bearings 4, pressure lubrication mode in addition guarantees that bearing 4 has enough lubricant oil, improve the lubrication effect of bearing 4, guaranteed the normal operation of compressor.During this time, for guaranteeing that the lubricant oil that shoe cream room 8 gathers is unlikely to too much, on the wall body of bearing 1, have excess oil release aperture 9, this excess oil release aperture 9 is positioned on the chamber wall of shoe cream room 8, excess oil release aperture 9 can be set according to the lubricants capacity of reality with respect to the height of bearing (ball) cover 3, if lubricant oil in shoe cream room 8 can be discharged from excess oil release aperture 9 too much.
In mounting structure shown in Figure 1, the lower support point of star wheel rotor only needs the common ball bearing of assembling, the grease lubrication that its required lubricating requirement can be depended merely on bearing itself gets final product, but because of the gear mechanism of lower support pad itself is exactly to be immersed in the lubricant oil, lubricated sufficient, extra lubrication can guarantee that more bearing has better lubrication effect.Simultaneously, the gear mechanism of this lower support point generally is equipped with an adjusting screw 13 on end cap 14, and adjusting screw 13 roof pressures need be fitted with seal ring to avoid oil leak between this end cap 14 and the bearing on the end cap 14 of bearing.At this moment, can adjust the axial position of star wheel rotor by turning adjusting screw 13, and then realize regulating the end face of star-wheel and the gap on housing seal limit, just decide the position of star-wheel commentaries on classics like this, and then the gap between true screw mandrel 6 of ability and the bearing (ball) cover 3.
When star wheel rotor is installed down, the bottom of its star wheel rotor support mechanism as shown in Figure 2, the structure at this position and superstructure broadly similar shown in Figure 1, slightly different is: owing to be positioned at the gear mechanism of bottom, the tapered roller bearing part has been immersed in the lubricant oil, so need not to add lubrication system for it sets fuel feeding valve 7 and open oil seepage hole 12 etc. on bearing (ball) cover 3, the lubricant oil that soaks can guarantee that this gear mechanism has enough lubrication effects, during this time, need be fitted with seal ring to avoid oil leak between bearing (ball) cover 3 and the bearing 1.And in this mounting structure, the upper support point of star wheel rotor adopts common ball roller bearing supporting get final product, and being contacted with raceway by ball bearing is a contact, the generation heat be not so good as circular cone or cylindrical bearing big, so enough by the oil mist lubrication of self.
In addition, manufacture and design of the present utility model, have the assembling screw 10 coaxial with push rod 6 on the bearing (ball) cover 3, the aperture of assembling screw 10 is less than the diameter of push rod 6, the technology screw that uses when installing.In star wheel rotor 2 installation processes, screw mandrel must change the little screw mandrel of ratio push rod 6 shown in Fig. 4 structure into, in the assembly process, earlier screw mandrel is tightened on the assembling screw 10 of bearing (ball) cover 3, turns nut, to tighten up spring 5, the bearing at this place is installed under no spring force, after to be installed the preparing, is turned on nut and take screw mandrel away, the spring force of retracting spring 5 produces pretightening force to bearing.After star wheel rotor 2 and bearing 4 install, installation screw mandrel shown in Figure 3 can be changed to work push rod as shown in Figure 3.
In sum, the utility model is by setting up push rod 6 between bearing 1 and bearing (ball) cover 3, the folk prescription that has effectively limited bearing 4 is to moving without restrictions, simultaneously, add in addition and force lubricating system to guarantee that bearing 4 has enough lubricant oil, improve the lubrication effect of bearing 4, guaranteed the normal operation of star wheel rotor 2 and compressor.
Claims (6)
1. the gear mechanism of a single screw compressor star-wheel rotor, comprise bearing (1) and star wheel rotor (2), bearing (1) is the shell structure of a bottom end opening, bearing (ball) cover (3) is installed in the cavity of bearing (1), star wheel rotor (2) is bearing on the bearing (ball) cover (3) by bearing (4), be provided with the pressure spring (5) of roof pressure on bearing (ball) cover (3) in the bearing (1), pressure spring (5) applies pretightening force by bearing (ball) cover (3) to bearing (4), it is characterized in that: push rod (6) is housed on the described bearing (1), on the one end fixed bearing (1) of push rod (6), the other end of push rod (6) is near bearing (ball) cover (3), when bearing (ball) cover (3) is subjected to produce toward the pressure of push rod (6) direction when mobile, push rod (6) will roof pressure on bearing (ball) cover (3).
2. according to the gear mechanism of the described single screw compressor star-wheel of claim 1 rotor, it is characterized in that: described bearing (1) is provided with fuel feeding valve (7), the filler opening of fuel feeding valve (7) is by pipeline (18), joint (17), filter (16) is connected with the nozzle opening (15) on the housing, the oil outlet of fuel feeding valve (7) is communicated to the shoe cream room (8) that the cavity of bearing (ball) cover (3) and bearing (1) surrounds, bearing (ball) cover (3) has oil seepage hole (12), oil seepage hole (12) is communicated with the lubricating cavity of shoe cream room (8) and bearing (4), lubricant oil is after fuel feeding valve (7) enters shoe cream room (8), lubricating cavity by oil seepage hole (12) inflow bearing (4) is lubricated bearing (4).
3. according to the gear mechanism of the described single screw compressor star-wheel of claim 2 rotor, it is characterized in that: have excess oil release aperture (9) on the wall body of described bearing (1), this excess oil release aperture (9) is positioned on the chamber wall of shoe cream room (8).
4. according to the gear mechanism of the described single screw compressor star-wheel of claim 1 rotor, it is characterized in that: described pressure spring (5) is installed between the cavity diapire of bearing (ball) cover (3) and bearing (1).
5. according to the gear mechanism of the described single screw compressor star-wheel of claim 1 rotor, it is characterized in that: have the assembling screw (10) coaxial with push rod (6) on the described bearing (ball) cover (3), the aperture of assembling screw (10) is less than the diameter of push rod (6).
6. according to the gear mechanism of the described single screw compressor star-wheel of claim 1 rotor, it is characterized in that: described push rod (6) is a screw mandrel, screw mandrel and bearing (1) are for being threaded, one end of screw mandrel reaches outward outside the bearing (1), turn screw mandrel and can adjust the close gap of screw mandrel and bearing (ball) cover (3), screw mandrel reaches the outer end of bearing (1) outward and is provided with locking nut (11), the screw mandrel of adjusting the position can be locked on the bearing (1) by tightening locking nut (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201895517U CN201246308Y (en) | 2008-08-29 | 2008-08-29 | Bearing mechanism of single screw compressor inner star wheel rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201895517U CN201246308Y (en) | 2008-08-29 | 2008-08-29 | Bearing mechanism of single screw compressor inner star wheel rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201246308Y true CN201246308Y (en) | 2009-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201895517U Expired - Lifetime CN201246308Y (en) | 2008-08-29 | 2008-08-29 | Bearing mechanism of single screw compressor inner star wheel rotor |
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| Country | Link |
|---|---|
| CN (1) | CN201246308Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671109A (en) * | 2014-01-14 | 2014-03-26 | 淄博景曜真空设备有限公司 | Prismatic rod vacuum pump |
| CN109441814A (en) * | 2018-12-29 | 2019-03-08 | 无锡五洋赛德压缩机有限公司 | Novel screw compressor |
| TWI660122B (en) * | 2017-11-27 | 2019-05-21 | 日商三菱電機股份有限公司 | Single-screw compressor and refrigeration cycle device including the same |
| CN109780247A (en) * | 2019-03-06 | 2019-05-21 | 北京星际荣耀空间科技有限公司 | Stepless control valve, liquid rocket |
| CN115539389A (en) * | 2022-10-13 | 2022-12-30 | 辛麦恩科技股份有限公司 | Main machine lubricating structure for screw compressor |
-
2008
- 2008-08-29 CN CNU2008201895517U patent/CN201246308Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671109A (en) * | 2014-01-14 | 2014-03-26 | 淄博景曜真空设备有限公司 | Prismatic rod vacuum pump |
| CN103671109B (en) * | 2014-01-14 | 2015-11-18 | 淄博景曜真空设备有限公司 | A kind of rib bar vacuum pump |
| TWI660122B (en) * | 2017-11-27 | 2019-05-21 | 日商三菱電機股份有限公司 | Single-screw compressor and refrigeration cycle device including the same |
| CN109441814A (en) * | 2018-12-29 | 2019-03-08 | 无锡五洋赛德压缩机有限公司 | Novel screw compressor |
| CN109780247A (en) * | 2019-03-06 | 2019-05-21 | 北京星际荣耀空间科技有限公司 | Stepless control valve, liquid rocket |
| CN115539389A (en) * | 2022-10-13 | 2022-12-30 | 辛麦恩科技股份有限公司 | Main machine lubricating structure for screw compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090527 |
|
| CX01 | Expiry of patent term |