CN202073785U - Oil-injecting screw rod compressor with novel structure - Google Patents
Oil-injecting screw rod compressor with novel structure Download PDFInfo
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- CN202073785U CN202073785U CN2010206092413U CN201020609241U CN202073785U CN 202073785 U CN202073785 U CN 202073785U CN 2010206092413 U CN2010206092413 U CN 2010206092413U CN 201020609241 U CN201020609241 U CN 201020609241U CN 202073785 U CN202073785 U CN 202073785U
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Abstract
The utility model relates to an oil-injecting screw rod compressor with a structural design. The structure has the advantages of improving reliability of the compressor and reducing manufacturing cost of a compressor rotor. The oil-injecting screw rod compressor with the structural design is characterized in that a male rotor and a female rotor are transmitted through a synchromesh gear, and spiral portions of the male rotor and the female rotor are not contacted. No sealing is conducted between a conveying cavity and a bearing cavity. The arrangement of major parts on the male rotor and the female rotor is that a bearing for bearing radial force, a bearing for bearing axial force and a mechanical seal part are arranged in sequence from the venting side end face of the spiral portion of the male rotor to a shaft head at the venting end of the male rotor. The bearing for bearing the radial force and the synchromesh gear are arranged in sequence from the air-sucking side end face of the spiral portion of the female rotor to a shaft head at the sucking end of the female rotor. The bearing for bearing the radial force and the bearing for bearing the axial force are arranged in sequence from the venting side end face of the spiral portion of the female rotor to a shaft head at the venting end of the female rotor.
Description
1 technical field
The present invention relates to the structural design of oiling helical-lobe compressor.Helical-lobe compressor is widely used in fields such as air compression, refrigeration, air-conditioning, process gas compression, occupies most markets share under the mesolow operating mode.
2 background techniquies
The oiling helical-lobe compressor (root diameter is smaller or equal to 321mm) of general small-medium size, structurally adopt the scheme of male rotor drive female rotor, positive female rotor adopts grinding machine processing, can guarantee the accuracy of mesh between rotor like this, compressor operation is steady, and efficient is higher.
For large-sized oiling helical-lobe compressor (root diameter is greater than 321mm), the sun female rotor adopts grinding machine processing to run into difficulty, there is not business-like rotor grinding machine to buy on the market, some offshore company comes processing rotor with the large rotor grinding machine of oneself developing, and so just makes the cost of large scale rotor grinding very high.There is so large-scale oiling helical-lobe compressor in external some company, adopts the scheme of male rotor drive female rotor on its structure, and positive female rotor adopts grinding machine processing, but this compressor prices are rather stiff.
At present, domestic most of process gas is compressed the process gas compression project of machine producer for big discharge capacity, the technological scheme of selecting for use be adopt structure of non-oil screw rod compressor (even can with oiling helical-lobe compressor scheme solve also need not), that is: male rotor drives female rotor by synchromesh gear, sun female rotor spiral part does not contact, the sun female rotor separates with multiple-sealed (comprising carbocyclic ring sealing, nitrogen-sealed, mechanical seal etc.) between conveyor chamber and the bearing bore with milling machine processing (the relative grinding machine processing of machining accuracy is much lower).In the occasion that can use the oiling helical-lobe compressor, adopt oil free screw compressor that several shortcomings are structurally arranged, first shortcoming is that the sealing between its conveyor chamber and the bearing bore damages easily, second shortcoming is that the suction step bearing is bigger with the span of row's step bearing, and these shortcomings make oil free screw compressor, and rate of fault is higher comparatively speaking.
3 summary of the invention
Task of the present invention is to draw on the basis that has the helical-lobe compressor structural advantages both at home and abroad now, designing a kind of novel oiling helical-lobe compressor structure, and its advantage is under the prerequisite that guarantees compressor performance, reduces cost for manufacturing compressor greatly.
Innovative point of the present invention is: with the structural advantages of oil free screw compressor and oiling helical-lobe compressor.Particularly be exactly on the basis of oiling helical-lobe compressor structure, the structural a pair of synchromesh gear of oil free screw compressor to be added.The advantage of this structure is, under the prerequisite that guarantees compressor performance, greatly reduces the manufacture cost of compressor drum.
The feature of structure of the present invention is:
Transmitting movement is finished by synchromesh gear between the sun female rotor, and the spiral part of positive female rotor does not contact, this discontiguous relative position relation during by the machining accuracy of part and installation the adjusting to synchromesh gear guarantee.
Being arranged as of major part on the sun female rotor: inhale end spindle nose direction from male rotor spiral part suction side end face to male rotor, be followed successively by bearing radial force bearing, synchromesh gear, equalizing piston., be followed successively by the bearing radial force bearing, bear axial force bearing, mechanical seal to male rotor row end spindle nose direction from male rotor spiral part exhaust side end face.Inhale end spindle nose direction from female rotor spiral part suction side end face to female rotor, be followed successively by bearing radial force bearing, synchromesh gear., be followed successively by the bearing radial force bearing, bear the axial force bearing to female rotor row end spindle nose direction from female rotor spiral part exhaust side end face.
In this structure, because positive female rotor drives by synchromesh gear, the spiral part of sun female rotor does not contact, so just reduced requirement to positive female rotor machining accuracy, the sun female rotor can be processed without grinding machine, and available milling machine is processed, and so just greatly reduces the manufacture cost of compressor drum.In addition, because the processing technique of large gear is relatively ripe, machining accuracy relatively easily guarantees, so this structure can guarantee on transmission stability.
In the fault of eliminating sealing, reduce to inhale aspect the span between end row step bearing, structure of the present invention is for the oil free screw compressor structure described in " 2 background technique ", owing to structurally cancelled the sealing between conveyor chamber and the bearing bore, thereby eliminated the fault that seals, reduced to inhale the span between end and row's step bearing, improved the reliability of compressor operating.
Aspect the back lash between rotor, structure of the present invention is for rotor directly drives female rotor with grinding machine processing, male rotor structure, the back lash will be more greatly, but consider that structure of the present invention is mainly used on the large-scale oiling helical-lobe compressor, at this moment the relative value of Guo Louing is less, owing to the seal action of oiling, the reduction of this volumetric efficiency is very limited in addition.
Aspect smoothness of operation, structure of the present invention is for rotor directly drives female rotor with milling machine processing, male rotor structure, and the vibration during running will reduce greatly.This is because the driving between structure middle-jiao yang, function of the spleen and stomach female rotor of the present invention is undertaken by a pair of synchromesh gear, and the machining accuracy of synchromesh gear is than the precision height of milling machine processing rotor, so transmission accuracy of the present invention good than said structure.
4 description of drawings
What accompanying drawing 1, accompanying drawing 2 were described is a realization case of the present invention.
Accompanying drawing 1 is the axial vertical sectional view as the oiling helical-lobe compressor of realizing case.
Accompanying drawing 2 is the axial horizontal cross as the oiling helical-lobe compressor of realizing case.
5 embodiments
The specific embodiment of the present invention has a variety of.For example, department can not have guiding valve so that guiding valve to be arranged yet in the specific embodiment of the present invention.
Accompanying drawing 1, accompanying drawing 2 have been described a kind of case study on implementation with guiding valve.
Numeral is as follows with the corresponding relation of part in the accompanying drawing:
1 expression equalizing piston, 2 expression synchromesh gears, 3 expression bearing radial force bearings, 4 expression inlet end bearing supports, 5 expression bodies, 6 expression male rotors, 7 expression exhaust end bearing supports, the axial force bearing is born in 8 expressions, 9 expression exhaust end caps, 10 expression mechanical seals, 11 expression air inlet end caps, 12 expression female rotors, 13 expression guiding valve piston cylinders, 14 expression guiding valve pistons, 15 expression guiding valves.
The function of these major parts is respectively: male rotor, female rotor are realized gas is transferred to relief opening from suction port by the gear motion of self and with body formation sealed volume.The bearing radial force bearing is used for the radial load of the gas that born on the bear rotor.Bear the axial force bearing and be used for the axial load of the gas that born on the bear rotor.Mechanical seal is used for sealing owing to shaft extension goes out the passage that housing produces.Equalizing piston is used for the portion gas axial load on the balancing rotor, to alleviate the load that bears the axial force bearing.The effect of synchromesh gear is to transmit motion accurately between male rotor, female rotor, and keeps the spiral part of positive female rotor not contact.The effect of guiding valve is volume flowrate or an interior volume specific ratio of regulating compressor.The effect of guiding valve piston is to provide mobile power by straight tube for guiding valve.The effect of body is to cooperate with positive female rotor, guiding valve, constitutes air-inlet cavity, compression chamber, the exhaust cavity of gas.The effect of inlet end bearing support, exhaust end bearing support is to provide support and locate for inlet end bearing, exhaust end bearing.The effect of air inlet end cap, exhaust end cap is that the gas circuit of compressor inside, oil circuit and the external world are separated.The effect of guiding valve piston cylinder is to form a fluid drive mechanism with the guiding valve piston, provides power for guiding valve moves.
Exploitativeness of the present invention is mainly reflected on its assembling capacity.Do an explanation with regard to accompanying drawing 1, accompanying drawing 2 with regard to the assembling process of this case study on implementation below.
To guarantee that the machining accuracy of all parts meets the drawing requirement before the assembling.
The first step, the exhaust end bearing support is inserted in direction and position that positive female rotor is pressed in the accompanying drawing, load onto the bearing radial force bearing, refill and bear the axial force bearing, adjust the gap between positive female rotor spiral part exhaust side end face and the exhaust end bearing support end face simultaneously, make it reach the drawing requirement.
Second step, guiding valve is bound up with the straight tube that is connected guiding valve and guiding valve piston, put into body, and it is temporarily fixed with body, then body and guiding valve are enclosed within on the positive female rotor by direction in the accompanying drawing and position, with pin body and exhaust end bearing support are positioned at together, they are connect tight with screw.
The 3rd step was enclosed within the inlet end bearing support on positive female rotor and the straight tube by direction in the accompanying drawing and position, with pin and screw it and body was located, was connect.The bearing radial force bearing is packed on the inlet end bearing support in the corresponding bearing hole.Then, synchromesh gear is contained on the corresponding rotor by direction in the accompanying drawing and position, adjusts the relative position of synchromesh gear and institute's cartridge rotor in a circumferential direction, make that the spiral part of positive female rotor does not contact when two synchromesh gears contact by working order.
The 4th step was enclosed within the air inlet end cap on the straight tube by direction in the accompanying drawing and position, with pin and screw it and inlet end bearing support was located, was connect.Press direction and position in the accompanying drawing, on male rotor, load onto equalizing piston, then counter balance pocket is covered.
The 5th step, the guiding valve piston press direction in the accompanying drawing and fixed-site on straight tube, then the guiding valve piston cylinder is enclosed within on the guiding valve piston by direction in the accompanying drawing and position, with pin and screw with guiding valve piston cylinder and air inlet end cap locate, connection.
The 6th step was enclosed within the exhaust end cap on the male rotor by direction in the accompanying drawing and position, with pin and screw exhaust end cap and exhaust end bearing support was located, was connect.Press direction and position in the accompanying drawing, load onto mechanical seal.
It more than is exactly the main installation process of a case study on implementation of the oiling helical-lobe compressor of new structure of the present invention.
Claims (1)
1. the oiling helical-lobe compressor of a new structure, its structural being characterized as:
Transmitting movement is finished by synchromesh gear between the sun female rotor, and the spiral part of positive female rotor does not contact;
Being arranged as of major part on the sun female rotor: inhale end spindle nose direction from male rotor spiral part suction side end face to male rotor, be followed successively by bearing radial force bearing, synchromesh gear, equalizing piston; , be followed successively by the bearing radial force bearing, bear axial force bearing, mechanical seal to male rotor row end spindle nose direction from male rotor spiral part exhaust side end face; Inhale end spindle nose direction from female rotor spiral part suction side end face to female rotor, be followed successively by bearing radial force bearing, synchromesh gear; , be followed successively by the bearing radial force bearing, bear the axial force bearing to female rotor row end spindle nose direction from female rotor spiral part exhaust side end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206092413U CN202073785U (en) | 2010-11-15 | 2010-11-15 | Oil-injecting screw rod compressor with novel structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206092413U CN202073785U (en) | 2010-11-15 | 2010-11-15 | Oil-injecting screw rod compressor with novel structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202073785U true CN202073785U (en) | 2011-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206092413U Expired - Fee Related CN202073785U (en) | 2010-11-15 | 2010-11-15 | Oil-injecting screw rod compressor with novel structure |
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| Country | Link |
|---|---|
| CN (1) | CN202073785U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108843569A (en) * | 2018-08-23 | 2018-11-20 | 中山市捷科能机电科技有限公司 | Water spray double-screw compressor |
| CN111594440A (en) * | 2020-04-23 | 2020-08-28 | 浙江佳成机械有限公司 | Screw compressor capable of reducing noise and vibration |
-
2010
- 2010-11-15 CN CN2010206092413U patent/CN202073785U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108843569A (en) * | 2018-08-23 | 2018-11-20 | 中山市捷科能机电科技有限公司 | Water spray double-screw compressor |
| CN111594440A (en) * | 2020-04-23 | 2020-08-28 | 浙江佳成机械有限公司 | Screw compressor capable of reducing noise and vibration |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Xiao Wenwei Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111214 Termination date: 20191115 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |