CN102287375A - Claw type vertical oilless vacuum pump - Google Patents
Claw type vertical oilless vacuum pump Download PDFInfo
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- CN102287375A CN102287375A CN2011102185475A CN201110218547A CN102287375A CN 102287375 A CN102287375 A CN 102287375A CN 2011102185475 A CN2011102185475 A CN 2011102185475A CN 201110218547 A CN201110218547 A CN 201110218547A CN 102287375 A CN102287375 A CN 102287375A
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- rotating shaft
- steel bushing
- oil
- pump housing
- vacuum pump
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Abstract
The invention discloses a claw type vertical oilless vacuum pump, which comprises a vacuum pump body provided with an air inlet and an air outlet, rotor pairs arranged in the pump body, and two rotating shafts which synchronously rotate in opposite directions. Two ends of the rotating shafts are positioned in the pump body through a bearing, and the rotating shafts are driven by a motor arranged in the pump body; the rotating shafts and the pump body are vertically arranged; and sealing components are arranged on connecting parts of the two ends of the rotating shafts and the pump body. The claw type oilless vacuum pump is vertically arranged, the rotating shafts are stressed axially, the rotating shafts and various transmission parts are stressed in a balanced manner, the good sealing components ensure good lubrication and good sealing of the various transmission parts, the wear of the transmission parts is reduced, and the oilless internal environment of the vacuum pump is ensured. Moreover, by designing the unique sealing components and rotor adjusting parts, the assembly and disassembly of the transmission parts and the adjustment of the rotors are more convenient and quick, and the standard high-efficiency production of vacuum pumps and subsequent maintenance are facilitated.
Description
Technical field
The present invention relates to a kind of oil-free vacuum pump improvement technology.
Background technique
Vacuum pump is a kind of common equipment that produces negative pressure, can make working space generation negative pressure during work and form vacuum, and high pressure draught then can discharge in the external world of working space relatively.For pawl type oil-free vacuum pump, be mainly used in the occasion that vacuum environment is had relatively high expectations, require no oil pollution in the working space, because vacuum pump rotating shaft, bearing part need oil lubrication, for horizontal vacuum pump, each rotatable parts weares and teares easily, and existing vacuum pump, the assembling of each transmission part and change very loaded down with trivial detailsly is unfavorable for assembling and the maintenance in later stage.
Summary of the invention
In view of this, the technical problem to be solved in the present invention provides a kind of vertical oil-free vacuum pump of pawl type easy to maintenance, as to guarantee no oil pollution that assembles.
In order to solve the problems of the technologies described above, the present invention realizes in the following way:
The vertical oil-free vacuum pump of a kind of pawl type, comprise the vacuum pump pump housing that is provided with suction port and air outlet, be installed on rotor paired in the pump housing to and two rotating shafts that synchronous backward rotates, rotor is to being made up of a pair of commentaries on classics pawl, two change pawl is individually fixed in two rotating shafts, the rotating shaft two ends are positioned in the pump housing by bearing and by being installed on the outer motor driving of the pump housing, the described rotating shaft and the pump housing are vertical installation, are provided with in rotating shaft two ends and pump housing joint and prevent that upper bearing (metal) lubricant oil from entering the black box in the pump housing.
Wherein, described black box comprises black box and the lower seal assembly between the rotating shaft lower end and the pump housing between the rotating shaft upper end and the pump housing.The described black box of going up comprises a Upper shaft sleeve, Upper shaft sleeve is fixed in the upper shaft hole default in the pump housing, this Upper shaft sleeve inwall is provided with the less step ring of internal diameter, the upper bearing sleeve of fixed rotating shaft is in Upper shaft sleeve and place step ring top, undertaking oil baffle disc on below the upper bearing (metal), should go up the oil baffle disc below is oil sealing steel bushing on, last oil baffle disc, last oil sealing steel bushing inwall is tight sliding contact with upper bearing (metal) all, between last oil sealing steel bushing outer wall and upper shaft hole, be provided with a upper skeleton oil sealing, upper skeleton oil sealing and last oil sealing steel bushing outer wall, be tight sliding contact between the Upper shaft sleeve inwall.Upper shaft sleeve is fixed on the pump housing by screw, and Upper shaft sleeve is provided with dust cover.Described lower seal assembly comprises a Lower shaft sleeve, Lower shaft sleeve is fixed in the lower shaft hole default in the pump housing, this Lower shaft sleeve inwall is provided with the less step bulge loop of internal diameter, the lower bearing sleeve of fixed rotating shaft is in Lower shaft sleeve and be fixed in step ring below and and locate between the steel bushing, in the rotating shaft above the lower bearing, be with a following oil sealing steel bushing that is blocked in lower bearing inner ring sidewall, being provided with the lower skeleton oil sealing between oil sealing steel bushing outer wall and the Lower shaft sleeve inwall down, be tight sliding contact between lower skeleton oil sealing and following oil sealing steel bushing outer wall and the Lower shaft sleeve inwall.Shaft branch above following oil sealing steel bushing is provided with the bigger bulge loop of diameter, following oil sealing steel bushing peaks on the bulge loop sidewall, offer the air equalizer opening of stuffing pressure gas at the bulge loop sidewall, in the rotating shaft above the bulge loop, be with one with the sealing steel bushing of the tight sliding contact of rotating shaft outer wall, sealing steel bushing outer ring is provided with the packing flange with the tight sliding contact of lower shaft hole inwall.
As improvement to such scheme, described Lower shaft sleeve is fixed on the pump housing by screw, the rotating shaft lower end extends in the lubricating oil tank with pump housing integrative-structure, in the rotating shaft below the steel bushing of location, be fixed in the gear of realizing that two rotating shafts are rotated synchronously, wherein one extend downwards and with active rotating shaft that motor is connected by coupling on be with one and assist steel bushing, auxiliary steel bushing is by being positioned at its below, locate by the nut that screw thread is fixed on the active rotating shaft, lubricating oil tank bottom below active rotating shaft is fixed with a fixing frame, active rotating shaft is passed down through through hole default on the fixing frame, is provided with auxiliary outside framework oil seal between auxiliary steel bushing outer wall and through-hole wall.
As further improvement of these options, the described pump housing is divided into two-stage pump chamber at least by lateral partitions, it is right to be provided with rotor in each pump chamber, rotor is to being series in the rotating shaft, be fixed with corrosion resistant stainless steel gasket in baffle surface, pad is as being tight sliding contact between the adjustment component of adjusting spacing between rotor pair and the dividing plate and the rotor.And described pad is for having many pieces of multiple thickness size specification according to spacing between dividing plate and the rotor.
The present invention is designed to pawl type oil-free vacuum pump vertical, the rotating shaft axially loaded, rotating shaft and each transmission part stress balance have guaranteed the lubricated good and good seal of each transmission part by good black box, reduce the wearing and tearing of transmission part, guaranteed the vacuum pump internal environment of no greasy dirt.And by unique black box and the design of rotor adjustment component, make the adjustment of dismounting, rotor of transmission part convenient, quick, both be beneficial to such vacuum pump standardization High-efficient Production, also be more conducive to later maintenance.
Description of drawings
Fig. 1 is the whole cross-sectional structure schematic representation of the embodiment of the invention;
Fig. 2 is a black box cross-sectional structure schematic representation on the present embodiment;
Fig. 3 is a present embodiment lower seal assembly cross-sectional structure schematic representation;
Fig. 4 is present embodiment rotor, dividing plate and pad mounting structure schematic representation.
Embodiment
Defective at prior art exists describes in further detail of the present invention for the ease of it will be appreciated by those skilled in the art that below in conjunction with accompanying drawing:
The vertical oil-free vacuum pump of pawl type that present embodiment discloses has overcome existing vacuum pump and has been installed as the defective that vertical state exists, and makes such vacuum pump assemble, safeguard convenient.
As shown in Figure 1, the vertical oil-free vacuum pump of pawl type of present embodiment design comprises the vacuum pump pump housing 1 that is provided with suction port 11 and air outlet 12, be installed on the rotating shaft 3 that rotor paired in the pump housing 1 rotates 2 and two synchronous backwards, rotor is made up of a pair of commentaries on classics pawl 21 2, two change pawl 21 is individually fixed in two rotating shafts 3, rotating shaft 3 two ends are positioned to drive in the pump housing 1 and by the motor 4 that is installed on the pump housing 1 below by bearing, the rotating shaft 3 and the pump housing 1 are vertical installation, are provided with in rotating shaft 3 two ends and the pump housing 1 joint and prevent that upper bearing (metal) lubricant oil from entering the black box 5 in the pump housing.
The sealing assembly comprises black box 51 and the lower seal assembly 52 between rotating shaft 3 lower ends and the pump housing 1 between rotating shaft 3 upper ends and the pump housing 1.As shown in Figure 2.Wherein, last black box comprises a Upper shaft sleeve 511, Upper shaft sleeve is fixed in the upper shaft hole default in the pump housing, this Upper shaft sleeve inwall is provided with the less step ring 512 of internal diameter, the upper bearing (metal) 513 of fixed rotating shaft is placed in the Upper shaft sleeve and places step ring top, undertaking oil baffle disc 514 on below the upper bearing (metal), should go up the oil baffle disc below is oil sealing steel bushing 515 on, last oil baffle disc, last oil sealing steel bushing inwall is tight sliding contact with upper bearing (metal) all, between last oil sealing steel bushing outer wall and upper shaft hole, be provided with a upper skeleton oil sealing 516, upper skeleton oil sealing and last oil sealing steel bushing outer wall, be tight sliding contact between the Upper shaft sleeve inwall.Upper shaft sleeve is fixed on the pump housing by screw, and Upper shaft sleeve is provided with dust cover 517.
Last black box 51 good sealing effects of said structure, in needs assemblings or when replacing with black box 51, only needing to remove Upper shaft sleeve 511 can take out upper bearing (metal) 513, and other sealed members also can take out very easily, assemble and safeguard very convenient.Simultaneously also guarantee lubrication effect, improved each parts working life.
Again as shown in Figure 3.The lower seal assembly 52 that present embodiment adopts comprises a Lower shaft sleeve 521, Lower shaft sleeve 521 is fixed in the lower shaft hole default in the pump housing 1, these Lower shaft sleeve 521 inwalls are provided with the less step bulge loop 522 of internal diameter, the lower bearing 523 of fixed rotating shaft 3 is placed in the Lower shaft sleeve 521 and is fixed in step ring 522 belows and and locatees between the steel bushing 524, in the rotating shaft above the lower bearing 523 3, be with a following oil sealing steel bushing 525 that is blocked in lower bearing 523 inner ring sidewalls, being provided with lower skeleton oil sealing 526 between oil sealing steel bushing 525 outer walls and Lower shaft sleeve 521 inwalls down, be tight sliding contact between lower skeleton oil sealing 526 and following oil sealing steel bushing 525 outer walls and Lower shaft sleeve 521 inwalls.And, rotating shaft 3 parts above following oil sealing steel bushing 525 are provided with the bigger bulge loop of diameter 527, following oil sealing steel bushing 525 peaks on bulge loop 527 sidewalls, offer the air equalizer opening 528 of stuffing pressure gas at bulge loop 527 sidewalls, in the rotating shaft above the bulge loop 527 3, be with one with the sealing steel bushing 529 of the tight sliding contact of rotating shaft 3 outer walls, sealing steel bushing 529 outer rings are provided with the packing flange 530 with the tight sliding contact of lower shaft hole inwall, by in equalizing orifice 528, charging into the gas of certain pressure, but balance vacuum pump air pressure inside, combination seal piston ring 530, further perfect sealing effect has also guaranteed lubrication effect, has improved each parts working life.
Again as shown in Figure 4, the present embodiment pump housing 1 is divided into two-stage pump chamber 17 at least by lateral partitions 16, in each pump chamber, be provided with rotor to 2, rotor is series in the rotating shaft 32, be fixed with corrosion resistant stainless steel gasket 18 on dividing plate 16 surfaces, pad 18 as adjust rotors to 2 and dividing plate 16 between be tight sliding contact between the adjustment component of spacing and the rotor.Since rotor to 2, there are the error of processing, assembling in parts such as dividing plate 16, for the ease of adjusting, pad 18 is for having many pieces of multiple thickness size specification according to spacing between dividing plate 16 and the rotor.
Said structure can be provided with the corrosion resistant stainless steel gasket of different size flexibly according to the spacing between rotor and the dividing plate 16, guaranteed that slit, rotor bi-side can satisfy the requirement of vacuum pump work, dismounting, adjustment and follow-up maintenance for rotor are all very convenient, quick, are fit to the batch and the standardized production of such vacuum pump.
The above embodiment has only expressed embodiments of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (9)
1. vertical oil-free vacuum pump of pawl type, comprise the vacuum pump pump housing (1) that is provided with suction port (11) and air outlet (12), be installed on rotor paired in the pump housing to (2) and two rotating shafts (3) that synchronous backward rotates, rotor is to being made up of a pair of commentaries on classics pawl (21), two change pawl is individually fixed in two rotating shafts, the rotating shaft two ends are positioned to drive in the pump housing and by being installed on the outer motor (4) of the pump housing by bearing, it is characterized in that: the described rotating shaft and the pump housing are vertical installation, are provided with in rotating shaft two ends and pump housing joint and prevent that upper bearing (metal) lubricant oil from entering the black box (5) in the pump housing.
2. the vertical oil-free vacuum pump of pawl type according to claim 1 is characterized in that: described black box comprises black box (51) and the lower seal assembly (52) between the rotating shaft lower end and the pump housing between the rotating shaft upper end and the pump housing.
3. the vertical oil-free vacuum pump of pawl type according to claim 2, it is characterized in that: the described black box of going up comprises a Upper shaft sleeve (511), Upper shaft sleeve is fixed in the upper shaft hole default in the pump housing, this Upper shaft sleeve inwall is provided with the less step ring (512) of internal diameter, the upper bearing (metal) of fixed rotating shaft (513) is placed in the Upper shaft sleeve and places step ring top, undertaking oil baffle disc on (514) below the upper bearing (metal), should go up the oil baffle disc below is oil sealing steel bushing (515) on, last oil baffle disc, last oil sealing steel bushing inwall is tight sliding contact with upper bearing (metal) all, between last oil sealing steel bushing outer wall and upper shaft hole, be provided with a upper skeleton oil sealing (516), upper skeleton oil sealing and last oil sealing steel bushing outer wall, be tight sliding contact between the Upper shaft sleeve inwall.
4. the vertical oil-free vacuum pump of pawl type according to claim 3, it is characterized in that: described Upper shaft sleeve is fixed on the pump housing by screw, and Upper shaft sleeve is provided with dust cover (517).
5. the vertical oil-free vacuum pump of pawl type according to claim 2, it is characterized in that: described lower seal assembly comprises a Lower shaft sleeve (521), Lower shaft sleeve is fixed in the lower shaft hole default in the pump housing, this Lower shaft sleeve inwall is provided with the less step bulge loop (522) of internal diameter, the lower bearing of fixed rotating shaft (523) is placed in the Lower shaft sleeve and is fixed in step ring below and and locatees between the steel bushing (524), in the rotating shaft above the lower bearing, be with a following oil sealing steel bushing (525) that is blocked in lower bearing inner ring sidewall, being provided with lower skeleton oil sealing (526) between oil sealing steel bushing outer wall and the Lower shaft sleeve inwall down, be tight sliding contact between lower skeleton oil sealing and following oil sealing steel bushing outer wall and the Lower shaft sleeve inwall.
6. the vertical oil-free vacuum pump of pawl type according to claim 5, it is characterized in that: the shaft branch above following oil sealing steel bushing is provided with the bigger bulge loop of diameter (527), following oil sealing steel bushing peaks on the bulge loop sidewall, offer the air equalizer opening (528) of stuffing pressure gas at the bulge loop sidewall, in the rotating shaft above the bulge loop, be with one with the sealing steel bushing (529) of the tight sliding contact of rotating shaft outer wall, sealing steel bushing outer ring is provided with the packing flange (530) with the tight sliding contact of lower shaft hole inwall.
7. the vertical oil-free vacuum pump of pawl type according to claim 6, it is characterized in that: described Lower shaft sleeve is fixed on the pump housing by screw, the rotating shaft lower end extends in the lubricating oil tank (15) with pump housing integrative-structure, in the rotating shaft below the steel bushing of location, be fixed in the gear (6) of realizing that two rotating shafts are rotated synchronously, wherein one extend downwards and with active rotating shaft that motor is connected by coupling on be with one and assist steel bushing (7), auxiliary steel bushing is by being positioned at its below, locate by the nut (8) that screw thread is fixed on the active rotating shaft, lubricating oil tank bottom below active rotating shaft is fixed with a fixing frame (9), active rotating shaft is passed down through through hole (91) default on the fixing frame, is provided with auxiliary outside framework oil seal (10) between auxiliary steel bushing outer wall and through-hole wall.
8. according to the vertical oil-free vacuum pump of each described pawl type in the claim 1～7, it is characterized in that: the described pump housing is divided into two-stage pump chamber (17) at least by lateral partitions (16), it is right to be provided with rotor in each pump chamber, rotor is to being series in the rotating shaft, be fixed with corrosion resistant stainless steel gasket (18) in baffle surface, pad is as being tight sliding contact between the adjustment component of adjusting spacing between rotor pair and the dividing plate and the rotor.
9. the vertical oil-free vacuum pump of pawl type according to claim 8 is characterized in that: described pad is for having many pieces of multiple thickness size specification according to spacing between dividing plate and the rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102185475A CN102287375A (en) | 2011-08-02 | 2011-08-02 | Claw type vertical oilless vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102185475A CN102287375A (en) | 2011-08-02 | 2011-08-02 | Claw type vertical oilless vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102287375A true CN102287375A (en) | 2011-12-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102185475A Pending CN102287375A (en) | 2011-08-02 | 2011-08-02 | Claw type vertical oilless vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102287375A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314807A (en) * | 2014-09-30 | 2015-01-28 | 何家密 | Application of rotor with bisecting rotation angle coaxial assembly of multiple cams or gears to achieve synchronous equilibrium |
| CN105422446A (en) * | 2015-12-24 | 2016-03-23 | 淄博干式真空泵有限公司 | Vertical internal cooling roots vacuum pump capable of directly discharging gases into atmosphere |
| CN114962253A (en) * | 2022-04-12 | 2022-08-30 | 宁波鲍斯能源装备股份有限公司 | Rotor and shaft mounting structure, claw pump and dismounting method |
-
2011
- 2011-08-02 CN CN2011102185475A patent/CN102287375A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314807A (en) * | 2014-09-30 | 2015-01-28 | 何家密 | Application of rotor with bisecting rotation angle coaxial assembly of multiple cams or gears to achieve synchronous equilibrium |
| CN105422446A (en) * | 2015-12-24 | 2016-03-23 | 淄博干式真空泵有限公司 | Vertical internal cooling roots vacuum pump capable of directly discharging gases into atmosphere |
| CN114962253A (en) * | 2022-04-12 | 2022-08-30 | 宁波鲍斯能源装备股份有限公司 | Rotor and shaft mounting structure, claw pump and dismounting method |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111221 |