CN202867198U - Low-pressure oil-injection screw compressor - Google Patents
Low-pressure oil-injection screw compressor Download PDFInfo
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- CN202867198U CN202867198U CN 201220645167 CN201220645167U CN202867198U CN 202867198 U CN202867198 U CN 202867198U CN 201220645167 CN201220645167 CN 201220645167 CN 201220645167 U CN201220645167 U CN 201220645167U CN 202867198 U CN202867198 U CN 202867198U
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Abstract
The utility model relates to a low-pressure oil-injection screw compressor. The low-pressure oil-injection screw compressor is characterized by comprising a front cover plate, a housing, a male rotor, a female rotor, a gas discharge end and a rear cover plate, wherein one end of the male rotor is connected to the housing by a cylindrical bearing, and the other end of the male rotor is connected to the gas discharge end by a tapered bearing; the female rotor is engaged with the male rotor; one end of the female rotor is connected to the housing by the cylindrical bearing, and the other end of the female rotor is connected to the gas discharge end by the tapered bearing; the gas discharge end is connected with the housing by a bolt in a fastened manner; the front cover plate is connected to the front end of the housing; and the rear cover plate is connected to the outer side of the gas discharge end. The low-pressure oil-injection screw compressor has the beneficial effects of being energy-saving, low in running noise and low in manufacturing cost.
Description
Technical field
The present invention relates to the Compressor Technology field, particularly a kind of low pressure fuel injector formula helical-lobe compressor.
Background technique
In present stage, low pressure fuel injector formula helical-lobe compressor mainly uses press head in the routine, produces pressure at the medium pressure gas of 7-9bar, then by reduction valve pressure is reduced to 2-4bar, and then satisfies working environment to the requirement of low pressure.All be at the inlet end roller bearing as conventional middle press is first, use simultaneously the angular contact ball bearing of single row roller bearing and pairing use at exhaust end, use the bearing pairing of this structure, although can accurately control the exhaust end gap, overcome larger axial force and radial force.But this bearing structure is relatively costly, and needs the more bearing of relative populations, and manufacture cost is higher, and lawsuit lubricant oil is inconvenient.This mode prepares low-pressure gas, gas compression to a relatively high pressure need to be reduced pressure again, and the energy comparison that compressor consumes is many, and the pressure ratio during the host machine part operation is higher, causes moving the noise height, and machine service life is short.Also having a kind of mode that produces low-pressure gas is exactly to use conventional fuel injection helical lobe compressor, exhaust pressure is arranged on lower value 2-4bar, utilize simultaneously the oil of an elevated pressures of an external oil pump output, spray into compressor, play the effect of lubrication and cooling, but the interior pressure of this machine is often higher, essential external high pressure oil pump.
The rotor that the common screw compressor uses is general to adopt the tooth Shape Design of 5: 6 or 5: 7, reach the purpose that improves the rotor rigidity by the diameter that improves rotor, it is exactly that rotor is larger that such design brings a shortcoming, weight ratio is heavier, the speed that rotor rotates is lower comparatively speaking, slot shape of rotor is many, and process time is relatively long, and Economy is poor.
Summary of the invention
The technical problem to be solved in the present invention is, provide a kind of energy-conservation, the operation noise is little, the low pressure fuel injector formula helical-lobe compressor of low cost of manufacture.
For solving the problems of the technologies described above, the present invention adopts following technological scheme: a kind of low pressure fuel injector formula helical-lobe compressor, it is characterized in that: comprise front shroud, housing, male rotor, female rotor, exhaust end and back shroud, male rotor one end is connected on the housing by cylindrical bearing, and the other end connects exhaust end by conical bearing; Female rotor and male rotor are meshing, and the one end is connected on the housing by cylindrical bearing, and the other end connects exhaust end by conical bearing, and exhaust end is fastenedly connected by bolt and housing, and front shroud is connected in the housing front end, and back shroud is connected in the exhaust end outside.
As a further improvement on the present invention, described male rotor has 3 teeth, and described female rotor has 5 teeth.Like this, male rotor had both driven both passive rotor sizableness of rotor and female rotor, and the tightness of rotor is relatively good, and the rotor rigidity approaches, and bearing capacity is high.Such gear ratio, so that helical-lobe compressor has low leakage area, lower compression ratio, lower interior pressure, engagement is steadily.The rotor machining performance, the smooth connection of molded line surface of tooth side without cusp, is convenient to processing and detection on the molded line, and cleanliness is relatively good, and noise is low.
Be provided with the bearing briquetting between conical bearing and the back shroud.Can guarantee that conical bearing can bear larger radial pressure.
The present invention uses a pair of number of teeth to be respectively 3 and 5 male rotor and female rotor, and two ends of rotor is loaded onto respectively bearing, and bearing is installed on housing and the exhaust end, and housing and exhaust end are accurately located by straight pin, then are bolted connection.Female rotor and male rotor are meshing, by driving the rotation of male rotor, drive female rotor and rotate, and reach the purpose of pressurized gas.By at exhaust end the tapered roller bearing that can overcome axial force, the axial force of bearing the rotor under the working state being installed.The advantage of this bearing structure setting is: the position that can either locate accurately rotor, can bear again larger axial and radial force, provide convenience for lubricated simultaneously, can conveniently provide lubricant oil for each bearing by at shell body wall and exhaust end lubrication delivery passage being set, the pressurized gas that utilizes compressor self to produce can be realized fuel feeding, need not to arrange special external oil pump.Inner pressure ratio of the present invention is less, can utilize the pressure of the gas of compressor self generation fully, drives cooling oil and injects compressor.Simultaneously because the special construction of bearing, so that the oil of low-pressure also can directly spray on the roller of each bearing of exhaust end, give the sufficient lubrication and cooling of bearing.
The present invention adopts the male rotor of 3 teeth and the female rotor of 5 teeth, and the number of teeth is few, and is easily manufactured, low cost of manufacture.
The low pressure fuel injector formula helical-lobe compressor that the present invention relates to, the pressurized gas that directly produces 2-4bar when work is for the client, and the machine operating pressure is lower, so noise is smaller.With respect to the compressor that gas compression is reduced pressure to 7-9bar again with need the compressor of an external oil pump, can save a big chunk energy, so also have energy-saving and cost-reducing advantage.
In sum, the present invention has beneficial effect energy-conservation, little, the low cost of manufacture of operation noise.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
A kind of low pressure fuel injector formula helical-lobe compressor comprises front shroud 1, housing 2, male rotor 3, female rotor 4, exhaust end 5 and back shroud 6 as shown in Figure 1, and male rotor 3 one ends are connected on the housing by cylindrical bearing 7, and the other end connects exhaust end 5 by conical bearing 8; Female rotor 4 is meshing with male rotor 3, the one end is connected on the housing 2 by cylindrical bearing 7, and the other end connects exhaust end 5 by conical bearing 8, and exhaust end 5 is fastenedly connected by bolt and housing 2, front shroud 1 is connected in housing 2 front ends, and back shroud 6 is connected in exhaust end 5 outsides.Be provided with bearing briquetting 9 between conical bearing 8 and the back shroud 6, can guarantee that conical bearing 8 can bear larger radial pressure.Described male rotor 3 has 3 teeth, and described female rotor 4 has 5 teeth.
Claims (3)
1. low pressure fuel injector formula helical-lobe compressor, it is characterized in that: comprise front shroud (1), housing (2), male rotor (3), female rotor (4), exhaust end (5) and back shroud (6), male rotor (3) one ends are connected on the housing by cylindrical bearing (7), and the other end connects exhaust end (5) by conical bearing (8); Female rotor (4) is meshing with male rotor (3), the one end is connected on the housing by cylindrical bearing, the other end connects exhaust end (5) by conical bearing, exhaust end (5) is fastenedly connected by bolt and housing, front shroud (1) is connected in housing (2) front end, and back shroud (6) is connected in exhaust end (5) outside.
2. low pressure fuel injector formula helical-lobe compressor according to claim 1, it is characterized in that: described male rotor (3) has 3 teeth, and described female rotor (4) has 5 teeth.
3. low pressure fuel injector formula helical-lobe compressor according to claim 1 is characterized in that: be provided with bearing briquetting (9) between conical bearing (8) and the back shroud (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220645167 CN202867198U (en) | 2012-11-07 | 2012-11-07 | Low-pressure oil-injection screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220645167 CN202867198U (en) | 2012-11-07 | 2012-11-07 | Low-pressure oil-injection screw compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202867198U true CN202867198U (en) | 2013-04-10 |
Family
ID=48033921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220645167 Expired - Fee Related CN202867198U (en) | 2012-11-07 | 2012-11-07 | Low-pressure oil-injection screw compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202867198U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329253A (en) * | 2014-09-18 | 2015-02-04 | 苏州欧能螺杆技术有限公司 | Efficient permanent magnet synchronous screw main-engine |
| CN108894984A (en) * | 2018-09-05 | 2018-11-27 | 泰田集团有限公司 | Screw compressor and bearing device thereof |
| CN111997897A (en) * | 2020-09-25 | 2020-11-27 | 兰州理工大学 | Cam type gas circulating pump for fuel cell |
| CN113803252A (en) * | 2021-10-20 | 2021-12-17 | 杭州久益机械股份有限公司 | Dry-type oil-free screw compressor and operation method thereof |
-
2012
- 2012-11-07 CN CN 201220645167 patent/CN202867198U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329253A (en) * | 2014-09-18 | 2015-02-04 | 苏州欧能螺杆技术有限公司 | Efficient permanent magnet synchronous screw main-engine |
| CN108894984A (en) * | 2018-09-05 | 2018-11-27 | 泰田集团有限公司 | Screw compressor and bearing device thereof |
| CN111997897A (en) * | 2020-09-25 | 2020-11-27 | 兰州理工大学 | Cam type gas circulating pump for fuel cell |
| CN113803252A (en) * | 2021-10-20 | 2021-12-17 | 杭州久益机械股份有限公司 | Dry-type oil-free screw compressor and operation method thereof |
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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: SHENZHEN COMP ENERGY CONSERVATION TECHNOLOGY CO., Free format text: FORMER OWNER: WANG JUNJIE Effective date: 20140225 |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 315000 NINGBO, ZHEJIANG PROVINCE TO: 518105 SHENZHEN, GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140225 Address after: 518105, No. 504, west station, new station, Songgang street, Shenzhen, Guangdong, Baoan District Patentee after: Shenzhen COMP Energy Conservation Technology Co., Ltd. Address before: Haishu District of Zhejiang city in Ningbo province 315000 Freeman Street 28 Lane 21, Room 201 Patentee before: Wang Junjie |
|
| DD01 | Delivery of document by public notice |
Addressee: Shenzhen COMP Energy Conservation Technology Co., Ltd. Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20141107 |
|
| EXPY | Termination of patent right or utility model |