CN101545487A - Multi-stage rotor pump and manufacturing process thereof - Google Patents
Multi-stage rotor pump and manufacturing process thereof Download PDFInfo
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- CN101545487A CN101545487A CN200910128253A CN200910128253A CN101545487A CN 101545487 A CN101545487 A CN 101545487A CN 200910128253 A CN200910128253 A CN 200910128253A CN 200910128253 A CN200910128253 A CN 200910128253A CN 101545487 A CN101545487 A CN 101545487A
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Abstract
The invention relates to a multi-stage rotor pump and the manufacturing process thereof. The multi-stage rotor pump is provided with a rotor shaft in the housing equipped with a plurality of rotor chamber, a multi-stage rotor is fixedly disposed on the rotor shaft. In order to produce the multi-stage rotor pump simply and with low cost, a hollow cylinder body with cross sections in the same shape is formed. When the cylinder is formed, radiating ribs extending along the longitudinal axis direction are formed on the outer circumferential surface of the cylinder simultaneously, the cross section interposing with the longitudinal axis cuts the cylinder which is used as a plurality of rotor housing. Rotor shafts are configured inside the plurality of rotor housing, and a multi-stage rotor is fixedly disposed on the rotor shafts inside each rotor housing. Because the separation board opened with rotor shaft through holes covers the inlet side and the outlet side of the rotor housing, a fluid path communicating the outlets of the front and the rear rotor housing with the inlet is formed on the separation wall.
Description
Technical field
The present invention relates to multi-stage rotor pump and manufacture method thereof, can be by a mould, will be shaped simultaneously by the housing and the partition wall of the multistage multi-stage rotor pump that assembles of rotor, manufacturing process is simplified.
Background technique
The housing that solid of rotation such as vacuum pump is housed at present, is generally by casting or forge and make.Therefore, under the situation of the multistage multi-stage rotor pump that assembles, only be the different structure of depth size even sectional shape is identical with rotor, then also to prepare different separately moulds and make.
Patent documentation 1 (Japanese kokai publication hei 5-18379 communique) discloses such multi-stage roots type vacuum pump: constitute by being split into two-part rotor housing abreast with rotor axis, axial region is an iron material, the material cutting that will be formed by Bao Zhu such as aluminium alloy castings (cast ぐ Ru body) silk cocoon shape (ま ゆ shape) rotor part forms as one axial region and rotor part thus.
Comprise patent documentation 1 disclosed multistage vacuum pump, the rotor housing of multi-stage rotor pump or rotor shaft are normally by forging or casting and make at present.Under situation about making by present casting and Forging Technology, as previously mentioned, only be depth size difference even sectional shape is identical, will prepare different moulds and make.Therefore, manufacturing process complicates, cost up.
Summary of the invention
The present invention makes in view of the problem of prior art, and its purpose is, in multi-stage rotor pump, realization can be simply and multi-stage rotor pump and the manufacture method thereof made at low cost.
In order to reach this purpose, in the manufacture method of multi-stage rotor pump of the present invention,
This multi-stage rotor pump disposes rotor shaft in the enclosure interior that is formed with a plurality of rotor chambers, is set with multi-stage rotor on this rotor shaft,
The manufacture method of this multi-stage rotor pump is characterised in that,
Forming cross section is the hollow cylindrical body of same shape, and, when this cylindrical body is shaped, be formed on the radiating fin that this cylindrical body outer circumferential face extends along long axis direction simultaneously,
Block this cylindrical body and as a plurality of rotor housings with the section that intersects with long axis direction,
At the internal configurations rotor shaft of these a plurality of rotor housings, and fixedly install multi-stage rotor being positioned on the rotor shaft of each rotor housing,
Hide the inlet side and the outlet side of each rotor housing by offering the partition wall of rotor shaft by the hole,
Form on this partition wall the discharge opening of front and back rotor housing and the fluid flowing path of suction port connection.
In the method for the present invention, because from cross section is that the hollow cylindrical body of same shape is with a plurality of rotor housing single formings, so not needing only to be that the different rotor housing of axial length is all made by different moulds at every turn, can to shorten manufacturing process and reduce cost.
Among the present invention, from this cylindrical body shaping rotor housing the time, be not only and draw shaping and extrusion moulding, and can use and forge and casting.
In the method for the present invention, owing to a plurality of rotor housings that are shaped with a kind of mould, thus a kind of part shape not only can be used in multistage, and can reach commonization of multimachine kind, so the part making becomes easy.In addition, only just can freely tackle the depth size of rotor housing by changing cutoff size.Therefore, only can also change the volume of rotor chamber by the cutoff size that changes rotor housing.And then, in a multi-stage rotor pump, can use the partition wall of same structure.
In addition, owing to when described cylindrical body is shaped, radiating fin is formed on the outer circumferential face of this cylindrical body simultaneously,, cost is reduced so do not need to be used to form the operation of radiating fin.
Along the section that intersects with long axis direction this cylindrical body is blocked and situation as a plurality of rotor housings under, or as described later, constitute by this cylindrical body under the situation of external frame body of a plurality of rotor housings and partition wall, owing to can strengthen rotor housing and partition wall, so the wall thickness attenuation of the external frame body of rotor housing and partition wall can be able to be reduced their material cost.Owing to the wall thickness attenuation of rotor housing so easily the inner heat that produces of rotor housing is discharged into outside the rotor housing, can be improved cooling effect.
When even the axial length of rotor housing and partition wall shortens owing to specification is different, also owing to utilize radiating fin to strengthen intensity, so the distortion can further prevent the pump action when rotor housing is carried out cutting and during assembling the time.Therefore, sealability needn't be worried to damage, the few pump of aberrations in property can be accessed as pump.
And, owing to be formed with the radiating fin that the long axis direction at the external frame body of rotor housing and partition wall extends, so, just can utilize a cooling mechanism to carry out the cooling of rotor housing of the multi-stage rotor pump of arranged in series effectively as long as cooling mechanism is set at an end of this rotor housing.For example be provided with under the situation of cooling fan as cooling mechanism, the fan few by number just can effectively cool off, and is being provided with under the situation of cooling tubing, can simplify matched tube structure.
Multi-stage rotor pump of the present invention disposes rotor shaft in the enclosure interior that is formed with a plurality of rotor chambers, is set with multi-stage rotor on this rotor shaft,
This multi-stage rotor pump is characterised in that to possess:
A plurality of rotor housings, it is formed with the radiating fin that extends along long axis direction at outer circumferential face, and is that the hollow cylindrical body of same shape blocks and constitutes along the section that intersects with long axis direction with cross section;
Two roots rotor axles, it is configured in the inside of these a plurality of rotor housings, and the fixed-site in this rotor housing is provided with multi-stage rotor;
Partition wall, its external frame body constitutes by with described section described cylindrical body being blocked, it hides the inlet side and the outlet side of each rotor housing, and is formed with the rotor shaft fluid flowing path that the discharge opening on the rotor housing and suction port are communicated with by the hole and before and after will being formed on.
Multi-stage rotor pump of the present invention, owing to, cross section that drawing shaping, extrusion moulding or forging, casting form from utilizing are the hollow cylindrical bodies of same shape, the external frame body of a plurality of rotor housings and partition wall is shaped simultaneously, thus manufacturing process can be shortened, so cost reduces.
Since a plurality of rotor housings are unified by a kind of shape of cross section, thus not only can use in multistage part, and only just can freely change the depth size by changing cutoff size.As common structure, cost reduces so can shorten manufacturing process because partition wall also can run through multistage.
Because the external frame body of rotor housing and partition wall is formed with the radiating fin that extends at long axis direction, so can access above-mentioned action effect.
In multi-stage rotor pump of the present invention, described partition wall is made of external frame body and two covering plates, and this covering plate is configured in the both sides of this external frame body and hides rotor housing and form rotor chamber, and is formed with fluid flowing path in the inside of this external frame body; Two covering plates are provided with rotor shaft by the hole, offer the opening that is communicated with the discharge opening of upstream side rotor housing on the covering plate, offer the opening that is communicated with the suction port of downstream side rotor housing on another covering plate.
Utilize this structure can make the compact structureization of partition wall, and make the manufacturing transfiguration of partition wall easy.
Perhaps also described partition wall can be made of a tabular body, this tabular body is formed with the described rotor shaft fluid flowing path that the discharge opening on the rotor housing and suction port are communicated with by the hole and before and after will being formed on.Like this, easy by constituting partition wall by a tabular body, make the operation transfiguration that is assembled into the cylindrical body that constitutes rotor housing.
Perhaps also described partition wall can be made of laminated a plurality of tabular bodys, pass through this laminated tabular body and form the described rotor shaft fluid flowing path that the discharge opening on the rotor housing and suction port are communicated with by the hole and before and after will being formed on.At this moment, owing to process each tabular body individually by hole and fluid flowing path in order to form rotor shaft, so it is easy by the processing transfiguration of hole and fluid flowing path to be used to form rotor shaft.
Manufacture method according to multi-stage rotor pump of the present invention, this multi-stage rotor pump disposes rotor shaft in the enclosure interior that is formed with a plurality of rotor chambers, be set with multi-stage rotor on this rotor shaft, the manufacture method of this multi-stage rotor pump is characterised in that, forming cross section is the hollow cylindrical body of same shape, and, when this cylindrical body is shaped, be formed on the radiating fin that this cylindrical body outer circumferential face extends along long axis direction simultaneously, block this cylindrical body and as a plurality of rotor housings along the section that intersects with long axis direction, internal configurations rotor shaft at these a plurality of rotor housings, and fixedly install multi-stage rotor being positioned on the rotor shaft of each rotor housing, hide the inlet side and the outlet side of each rotor housing by offering the partition wall of rotor shaft by the hole, form on this partition wall the discharge opening of front and back rotor housing and the fluid flowing path of suction port connection, thus, be the external frame body that the hollow cylindrical body of same shape can form a plurality of rotor housings and partition wall simultaneously from cross section.
Therefore, do not need the only different rotor housing manufacturing respectively at every turn of axial length can be shortened manufacturing process, cost reduces.Simultaneously, owing to can so can shorten manufacturing process, can make multi-stage rotor pump with the structure of partition wall in commonization at different levels with low cost.
And, because the outer circumferential face at them when the external frame body of rotor housing and partition wall is shaped forms radiating fin simultaneously, so can strengthen rotor housing and partition wall, therefore, the wall thickness attenuation of the external frame body of rotor housing and partition wall can be able to be reduced their material cost, and because can be with the wall thickness attenuation of rotor housing, so easily the inner heat that produces of rotor housing is discharged into outside the rotor housing, improves cooling effect.
According to device of the present invention, dispose rotor shaft in the enclosure interior that is formed with a plurality of rotor chambers, be set with multi-stage rotor on this rotor shaft, this multi-stage rotor pump is characterised in that, possess: a plurality of rotor housings, it is formed with the radiating fin that extends along long axis direction at outer circumferential face, and is that the hollow cylindrical body of same shape blocks and constitutes along the section that intersects with long axis direction with cross section; Two roots rotor axles, it is configured in the inside of these a plurality of rotor housings, and the fixed-site in this rotor housing is provided with multi-stage rotor; Partition wall, its external frame body is blocked described cylindrical body by described section and constitutes, its inlet side and outlet side with each rotor housing hides, and be formed with rotor shaft by hole and fluid flowing path that the discharge opening that forms on the rotor housing of front and back and suction port are communicated with, like this, the action effect same can be accessed, multi-stage rotor pump cheaply can be realized with the invention described above method.
The present invention can be applied in the multi-stage rotor pump that cross section has same shape, for example Roots pump, trochoid pump, cam pump (Network ロ-Port Application プ), gear pump, screw pump etc.
Description of drawings
Fig. 1 is the stereogram of the multistage vacuum pump manufacturing process of expression first embodiment of the invention;
Fig. 2 selects the stereogram that a part is represented among Fig. 1;
Fig. 3 is the plan view along A line among Fig. 1;
Fig. 4 is the sectional view along B-B line among Fig. 3;
Fig. 5 is the stereogram of the partition wall of second embodiment of the invention;
Fig. 6 is the sectional view of the partition wall of third embodiment of the invention.
Embodiment
Below use illustrated embodiment to describe the present invention in detail.But for the size of the structure member that this embodiment put down in writing, material, shape, configuration relation etc. relatively, short of clear and definite especially record does not just have this scope of invention only is defined in this intention.
(embodiment 1)
First embodiment who the present invention is applied in the Roots pump of (cocoon type) rotor that possesses the silk cocoon type is described according to Fig. 1～Fig. 4.Fig. 1 is a stereogram of representing to make from the aluminum cylindrical body 1 that extrusion process is shaped the operation of multistage vacuum pump, and Fig. 2 selects the stereogram that its part is represented.
Among Fig. 1 and Fig. 2, cylindrical body 1 is utilize to draw shaping or die for extrusion forming and the structure that cross section is configured as same shape and same size.At this moment, be under the situation of aluminum at cylindrical body 1, be shaped by extrusion process, be under the situation of Cuprum alloy such as brass at cylindrical body 1, by drawing the processing cylindrical body 1 that is shaped.When cylindrical body 1 is shaped, form the radiating fin 2 that extends along long axis direction simultaneously at the outer circumferential face of cylindrical body 1.
After cylindrical body 1 is shaped, cylindrical body 1 is blocked and is divided into a plurality of cylindrical body 1a, 1b and 1c along face with the long axis direction quadrature.In divided cylindrical body, constitute two- stage rotor housing 10 and 30 by cylindrical body 1a and 1c, constitute the partition wall 20 of separating rotor housing by cylindrical body 1b.At this moment, corresponding to the long axis direction size of first order rotor housing 10, second level rotor housing 30 or partition wall 20, decide the cutoff size of each cylindrical body 1a～1c.
Under the state that these cylindrical bodys 1a～1c is arranged in row, two roots rotor axle 3a and 3b are configured in this cylindrical body 1a～1c abreast.At this moment, still unassembled rotor on rotor shaft 3a, the 3b.Fig. 1 has omitted the rotor shaft 3a that is positioned at cylindrical body 1c inside, the diagram of 3b.
Then, from the stream upstream side, to rotor shaft 3a, 3b rotor and covering plate are installed successively.That is, the rotor 4a that is the silk cocoon type and the 4b that at first will be housed in the cylindrical body 1a is assemblied in respectively on rotor shaft 3a and the 3b.At this moment, also rotor 4a, 4b can be cut apart separately the back assembles to rotor shaft 3a, 3b.
Then, in the both sides of cylindrical body 1b, covering plate 5a, 5b are inserted on rotor shaft 3a, the 3b, this covering plate 5a, 5b will separate and formation partition wall 20 between two rotor housings with cylindrical body 1b.
Fig. 3 is the plan view along A line among Fig. 1, and Fig. 4 is the sectional view along B-B line among Fig. 3.Among Fig. 2～Fig. 4, covering plate 5a or 5b are embedded in the stepped part 6 that cylindrical body 1b both sides are provided with intercalation structure (イ Application ロ ウ Agencies makes), and fixing with bolt 7.Offer the rotor shaft that rotor shaft 3a, 3b are connected on covering plate 5a or the 5b and pass through hole 8a and 8b.Offer recess 9 on the covering plate 5a, this recess 9 is communicated with the discharge opening a that cylindrical body 1a goes up the first order rotor housing 10 that forms, and offers recess 11 on the covering plate 5b, and this recess 11 is communicated with the suction port that cylindrical body 1c goes up the second level rotor housing 30 that forms.
Like this, partition wall 20 comprises the external frame body that is made of cylindrical body 1b and the covering plate 5a and the 5b that are configured in cylindrical body 1b both sides.Be formed with fluid flowing path 12 in the partition wall 20, the discharge opening a of the first order rotor housing 10 that this fluid flowing path 12 will be formed by cylindrical body 1a is communicated with the suction port of the second level rotor housing 30 that is formed by cylindrical body 1c (diagram is omitted).After being assembled to covering plate 5a and 5b on the cylindrical body 1b, respectively not shown silk cocoon type rotor is fixedly installed on rotor shaft 3a, the 3b in cylindrical body 1c inside.Like this, as shown in Figure 4, key 14 closely is embedded in the keyway of offering on cylindrical body 1a～ 1c 13,1a～1c mutually combines with cylindrical body.
Thus, can assemble multi-stage rotor pump with two-stage rotor chamber, fluid from the rotor chamber that is formed by first order rotor housing 10 is exported via the partition wall 20 inner streams 12 that are provided with, can supply to the suction port of the rotor chamber that is formed by second level rotor housing 30.
According to present embodiment, when such assembling two-stage Roots pump, can utilize to draw shaping or extrusion moulding and, need not come to make respectively at every turn by the different mould of axial length with the external frame body 1b single forming of a plurality of rotor housings 10,30 and partition wall 20.Because the radiating fin 2 that forms on the outer circumferential face with the external frame body 1b of rotor housing 10,30 and partition wall 20 also is shaped simultaneously, reduces cost so can significantly shorten manufacturing process.
Owing to be provided with the radiating fin 2 that extends along the long axis direction of rotor housing 10,30 and partition wall 20, so can strengthen this rotor housing and partition wall.Therefore, the wall thickness attenuation of the external frame body 1b of rotor housing 10,30 and partition wall 20 can be able to be reduced their material cost.In addition, owing to the wall thickness attenuation of rotor housing 10,30 so the easy heat that the inside of rotor housing 10,30 is produced is discharged into outside the rotor housing, can be improved cooling effect.
And, owing to be formed with the radiating fin 2 that extends along the long axis direction of the external frame body 1b of rotor housing 10,30 and partition wall 20, so, just can utilize a cooling mechanism to carry out the cooling of rotor housing of the multi-stage rotor pump of arranged in series effectively as long as cooling mechanism is set at an end of this rotor housing.For example, be provided with as cooling mechanism under the situation of cooling fan, the fan few by number just can effectively cool off, and being provided with under the situation of cooling tubing, can simplify matched tube structure.
When even the axial length of rotor housing 10,30 and partition wall 20 shortens owing to specification is different, owing to utilizing radiating fin 2 to strengthen intensity, so when this rotor housing is carried out cutting or during assembling, the distortion in the time of can further preventing the pump action.Therefore, needn't worry to damage sealability as pump, can the few pump of manufacturing property deviation.
Owing to be shaped or the die for extrusion forming external frame body 1b of a plurality of rotor housings 10,30 and partition wall 20 that is shaped with a kind of the drawing, thus a kind of component shape not only can be used in multistage, and can reach commonization of multimachine kind, the parts making is easy.Only just can freely tackle the depth size of rotor housing by changing cutoff size.Therefore, only can also change the volume of rotor chamber by the cutoff size that changes rotor housing.
Like this, in a multi-stage rotor pump, can use the partition wall 20 of same structure, so can be simply and make multi-stage rotor pump at low cost.
By cylindrical body 1b and covering plate 5a, 5b constitutes partition wall 20, covering plate 5a and 5b are attached to both sides as the cylindrical body 1b of external frame body with the intercalation structure, rotor shaft 3a and 3b pass through hole 8a and 8b by the rotor shaft of offering on covering plate 5a and the 5b, offer the recess 9 that is communicated with the discharge opening a of the rotor chamber that constitutes by cylindrical body 1a on the covering plate 5a, offer the recess 11 that is communicated with the suction port of the rotor chamber that constitutes by cylindrical body 1c on the covering plate 5b, thus, just form fluid flowing path 12 in partition wall 20 inside, so can shorten the manufacturing time of partition wall 20, can be with the low cost manufacturing.
Owing to the intercalation structure covering plate 5a and 5b are fixed to cylindrical body 1b, so can improve the airtight performance of fluid flowing path 12.
(embodiment 2)
According to Fig. 5 the second embodiment of the present invention is described below.Present embodiment is the embodiment of other structures of expression partition wall, and structure in addition is identical with above-mentioned first embodiment.Fig. 5 is the stereogram of the separation wall construction of expression present embodiment.Among Fig. 5, partition wall 40 is made of a tabular body.Offer two rotor shafts that rotor shaft 3a, 3b run through on the partition wall 40 by hole 41a and 41b.Fig. 5 omitted surround described tabular body, as the diagram of the cylindrical body 1b of external frame body.
Offer opening 42 at rotor shaft below by hole 41a, 41b, this opening 42 is communicated with the discharge opening a of the rotor chamber that is made of first order rotor housing 10, offer opening 43 at this rotor shaft above by the hole, this opening 43 is communicated with the suction port of the rotor chamber that is made of second level rotor housing 30, and is formed with these openings 42 and 43 fluid flowing paths 44 that are communicated with.Utilize fluid flowing path 44, the fluid f that exports from the rotor chamber that is made of upstream side rotor housing 10 can be supplied to the suction port of the rotor chamber that constitutes by downstream side rotor housing 30.
According to present embodiment, since partition wall 40 is made of a tabular body, thus same with above-mentioned first embodiment, make partition wall easily, and owing to be formed with fluid flowing path 44 in the inside of this tabular body that constitutes by a plate, so can improve the tightness of fluid flowing path 44.
(embodiment 3)
According to Fig. 6 the third embodiment of the present invention is described below.Present embodiment is still represented other structures of partition wall, and Fig. 6 is the sectional view of the partition wall of expression present embodiment.Among Fig. 6, the partition wall 50 of present embodiment is the structure that forms at the inboard laminated a plurality of plates 51 as the cylindrical body 1b of external frame body.Offer rotor shaft that rotor shaft 3a and 3b pass on each laminate 51 respectively by hole 52, and offer porose or recess, in order to forming fluid flowing path 50, the discharge opening a of the upstream side rotor chamber that this fluid flowing path 50 will be made of first order rotor housing 10 is communicated with the suction port of the downstream side rotor chamber that is made of second level rotor housing 30.
For example, on the plate 51a of cylindrical body 1a, offering the recess 53 that is communicated with described discharge opening a, the recess 54 that is communicated with at the suction port of on the plate 51b of cylindrical body 1c, offering the downstream side rotor chamber that constitutes with rotor housing 30.
According to present embodiment, owing to partition wall 50 by a plurality of laminate 51 laminated formation, so on each plate, form the hole with form rotor shaft by hole 52 form the hole or recess when forming fluid flowing path 55, easy processing.Therefore, same with above-mentioned first embodiment and second embodiment, make partition wall 50 easily.
According to the present invention, when making multi-stage rotor pump, partition wall between rotor housing forms simultaneously with a plurality of rotor housings and separation owing to use a mould, and then the radiating fin that will form at the outer circumferential face of rotor housing and partition wall is shaped simultaneously, so can shorten manufacturing process, can make multi-stage rotor pump with low cost.
Claims (6)
1, a kind of manufacture method of multi-stage rotor pump, this multi-stage rotor pump disposes rotor shaft in the enclosure interior that is formed with a plurality of rotor chambers, is set with multi-stage rotor on this rotor shaft,
The manufacture method of this multi-stage rotor pump is characterised in that,
Forming cross section is the hollow cylindrical body of same shape, and, when this cylindrical body is shaped, be formed on the radiating fin that this cylindrical body outer circumferential face extends along long axis direction simultaneously,
Block this cylindrical body and as a plurality of rotor housings along the section that intersects with long axis direction,
At the internal configurations rotor shaft of these a plurality of rotor housings, and fixedly install multi-stage rotor being positioned on the rotor shaft of each rotor housing,
Hide the inlet side and the outlet side of each rotor housing by offering the partition wall of rotor shaft by the hole,
Form on this partition wall the discharge opening of front and back rotor housing and the fluid flowing path of suction port connection.
2, a kind of multi-stage rotor pump disposes rotor shaft in the enclosure interior that is formed with a plurality of rotor chambers, is set with multi-stage rotor on this rotor shaft,
This multi-stage rotor pump is characterised in that to possess:
A plurality of rotor housings, it is formed with the radiating fin that extends along long axis direction at outer circumferential face, and is that the hollow cylindrical body of same shape blocks and constitutes with the section that intersects with long axis direction with cross section;
Two roots rotor axles, it is configured in the inside of these a plurality of rotor housings, and the fixed-site in this rotor housing is provided with multi-stage rotor;
Partition wall, its external frame body constitutes by with described section described cylindrical body being blocked, it hides the inlet side and the outlet side of each rotor housing, and is formed with the rotor shaft fluid flowing path that the discharge opening on the rotor housing and suction port are communicated with by the hole and before and after will being formed on.
3, multi-stage rotor pump as claimed in claim 2, it is characterized in that, described partition wall is made of external frame body and two covering plates, and this covering plate is configured in the both sides of this external frame body and hides rotor housing and form rotor chamber, and is formed with fluid flowing path in the inside of this external frame body; Two covering plates are provided with rotor shaft by the hole, offer the opening that is communicated with the discharge opening of upstream side rotor housing on the covering plate, offer the opening that is communicated with the suction port of downstream side rotor housing on another covering plate.
4, multi-stage rotor pump as claimed in claim 2 is characterized in that, described partition wall is made of a tabular body, and this tabular body is formed with the described rotor shaft fluid flowing path that the discharge opening on the rotor housing and suction port are communicated with by the hole and before and after will being formed on.
5, multi-stage rotor pump as claimed in claim 2, it is characterized in that, described partition wall is made of laminated a plurality of tabular bodys, passes through this laminated tabular body and forms the described rotor shaft fluid flowing path that the discharge opening on the rotor housing and suction port are communicated with by the hole and before and after will being formed on.
6, multi-stage rotor pump as claimed in claim 2, wherein, the radiating fin that extends along long axis direction is the identical radiating fin of shaft section shape.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008076235A JP5227056B2 (en) | 2008-03-24 | 2008-03-24 | Multistage pump |
| JP076235/08 | 2008-03-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101545487A true CN101545487A (en) | 2009-09-30 |
Family
ID=41192803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910128253A Pending CN101545487A (en) | 2008-03-24 | 2009-03-24 | Multi-stage rotor pump and manufacturing process thereof |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5227056B2 (en) |
| CN (1) | CN101545487A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102667163A (en) * | 2009-12-24 | 2012-09-12 | 阿耐思特岩田株式会社 | Multi-stage vacuum pump |
| CN102979730A (en) * | 2012-10-26 | 2013-03-20 | 南通龙鹰真空泵业有限公司 | Roots pump |
| CN105952614A (en) * | 2015-03-09 | 2016-09-21 | 株式会社荏原制作所 | Vacuum pump |
| CN110168227A (en) * | 2017-02-17 | 2019-08-23 | 莱宝有限公司 | Multi-stage roots pump |
| CN114412786A (en) * | 2015-10-02 | 2022-04-29 | 莱宝有限公司 | Multi-stage rotary vane pump |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5263558B2 (en) * | 2011-10-05 | 2013-08-14 | 株式会社四葉機械製作所 | Corrosion-resistant multistage vacuum pump |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0524986U (en) * | 1991-09-06 | 1993-04-02 | 株式会社島津製作所 | Multi-stage dry vacuum pump |
| JP2000117380A (en) * | 1998-10-08 | 2000-04-25 | Showa Denko Kk | Manufacture of aluminum alloy rotor stock |
| FR2813104B1 (en) * | 2000-08-21 | 2002-11-29 | Cit Alcatel | SEAL FOR VACUUM PUMP |
-
2008
- 2008-03-24 JP JP2008076235A patent/JP5227056B2/en not_active Expired - Fee Related
-
2009
- 2009-03-24 CN CN200910128253A patent/CN101545487A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102667163A (en) * | 2009-12-24 | 2012-09-12 | 阿耐思特岩田株式会社 | Multi-stage vacuum pump |
| CN102667163B (en) * | 2009-12-24 | 2015-02-04 | 阿耐思特岩田株式会社 | Multi-stage vacuum pump |
| CN102979730A (en) * | 2012-10-26 | 2013-03-20 | 南通龙鹰真空泵业有限公司 | Roots pump |
| CN105952614A (en) * | 2015-03-09 | 2016-09-21 | 株式会社荏原制作所 | Vacuum pump |
| CN105952614B (en) * | 2015-03-09 | 2020-04-21 | 株式会社荏原制作所 | Vacuum pump |
| CN114412786A (en) * | 2015-10-02 | 2022-04-29 | 莱宝有限公司 | Multi-stage rotary vane pump |
| CN110168227A (en) * | 2017-02-17 | 2019-08-23 | 莱宝有限公司 | Multi-stage roots pump |
| US11255328B2 (en) | 2017-02-17 | 2022-02-22 | Leybold Gmbh | Multi-stage rotary lobe pump |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5227056B2 (en) | 2013-07-03 |
| JP2009228597A (en) | 2009-10-08 |
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Application publication date: 20090930 |