CN102220977A - Expansion bushing device of birotor pump - Google Patents
Expansion bushing device of birotor pump Download PDFInfo
- Publication number
- CN102220977A CN102220977A CN2011101888187A CN201110188818A CN102220977A CN 102220977 A CN102220977 A CN 102220977A CN 2011101888187 A CN2011101888187 A CN 2011101888187A CN 201110188818 A CN201110188818 A CN 201110188818A CN 102220977 A CN102220977 A CN 102220977A
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- Prior art keywords
- main shaft
- gear
- cover
- nut
- wheel gear
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Abstract
The invention discloses an expansion bushing device of a birotor pump. The expansion bushing device comprises a wheel gear (2) sleeved on a main shaft (1), and is characterized by also comprising an inner sleeve (3) which is sleeved and circumferentially limited on the main shaft (1), a nut (4) which is screwed on the main shaft (1), a plurality of bolts (5), wherein one end of the center bore of the wheel gear (2) is provided with a conical counter bore (2.1) which has larger exterior and smaller interior and can contain the inner sleeve (3), the outer wall of the inner sleeve (3) is adhered to the inner wall of the conical counter bore (2.1) of the wheel gear (2), each bolt (5) passes through the corresponding axial through hole (3.1) on the inner sleeve (3) so as to be screwed in the screwed hole of the wheel gear (2), and the wheel gear (2) is tightly adhered to the stepped surface of the main shaft (1). The expansion bushing device can ensure no axial relative motion between a first wheel gear and the main shaft, and has the advantages of high installation accuracy and easiness for installation.
Description
Technical field:
The present invention relates to the birotor pump field, specifically is a kind of expansion set device of birotor pump.
Background technique
The working principle of birotor pump: main shaft is connected with motor by coupling, and motor starts the back and drives main axis rotation, countershaft and direction opposite rotation synchronous with main shaft by the transmission of a pair of gear.Major and minor axle synchronously and the opposite rotation of direction, also driven be installed in major and minor axle front end the pair of cams rotor synchronously and direction is rotated on the contrary.At this moment the volume of pump has produced variation, thereby has constituted higher degree of vacuum and discharge pressure, is particularly suitable for the conveying of health level high viscosity medium and corrosivity high viscosity medium.Present cammingly birotor pump comprises the pump housing, pump cover, main shaft, countershaft and is located at first gear on the main shaft and is located at second gear on the countershaft, this first gear is installed on the main shaft, first gear needs to be connected by expansion set with main shaft, to guarantee both join strengths.Because this first gear and second gear are helical gear, after these two helical gear engagements, must guarantee that both axial positions can't relatively move.
The expansion set of prior art roughly has two kinds: first kind of expansion set, form by a tapered interior cover and a tapered overcoat of endoporus of periphery, need out a breach on the wall of cover and overcoat in being somebody's turn to do, in be set in the hole of overcoat, be combined with a plurality of both bolts of distance to axial that are used to adjust between overcoat and the interior cover, by turning bolt, interior cover and overcoat move in opposite directions simultaneously and make expansion set energy tensioner or contraction.Expansion set is when adjusting, and interior cover can move axially, be installed to the cammingly birotor pump like this after, can make between first gear and the main shaft axially to relatively move, thereby influence usability.Second kind of expansion set, form by one group of inside and outside sleeve and two end caps, all sever an axial slit on its inside and outside sleeve, make inside and outside sleeve energy tensioner or contraction by adjusting two bolts on the end cap, but so, the dimensional accuracy and the form and position tolerance of interior overcoat are destroyed, when expansion set is installed, require high to the sequencing and the torque of twisting screw, be installed to the cammingly birotor pump like this, directly influence first gear and the second gear meshing precision, and complicated structure makes also installation inconvenient.
Summary of the invention:
The technical problem to be solved in the present invention, provide between a kind of assurance first gear and the main shaft can't axially relatively move, the expansion set device of installation precision height, birotor pump easy for installation.
Technical solution of the present invention is, the expansion set device of the birotor pump of following structure is provided, comprise the gear that is socketed on the main shaft, it also comprises socket and circumferential spacing interior cover on main shaft, screw the nut on main shaft, a plurality of bolts, center hole one end of described gear be provided with outer imperial palace little and can be ccontaining in the taper counterbore of cover, the taper counterbore inwall of the outer wall of cover and gear is fitted in described, described in the cover minimum outer diameter greater than the taper counterbore minimum diameter, corresponding axial hole 3.1 in each bolt 5 passes and is located on the cover 3 screws in the tapped hole of gear 2, and described gear is close on the step surface of main shaft by nut.
Adopt after the above structure compared with prior art, the present invention has the following advantages: because gear is close on the step surface of main shaft by nut, and nut is directly to screw on main shaft, after nut screws like this, make the direct geared axial limiting on main shaft, guarantee axially to relatively move between first gear and the main shaft.Again because the applying of the taper counterbore inwall of the outer wall of interior cover and gear, and the height of taper counterbore is greater than the height of interior cover, like this by adjusting bolt, cover can move axially at the taper counterbore in making, and moves inward swelling, outwards moves and unclamps, swelling need not to set up opening like this, be that gear and interior cover all are complete circles, the installation precision height, and easy for installation.
As improvement, the end face between described nut and the gear also is provided with resilient pad, prevents the gap between nut loosening and elimination nut and gear.
As improvement, the quantity of described bolt is three, and evenly distributes along the circumference of interior cover, guarantees join strength.
Description of drawings:
Accompanying drawing 1 is the structural representation of birotor pump of the present invention.
Accompanying drawing 2 is the structure for amplifying schematic representation of the expansion set device of birotor pump of the present invention.
Accompanying drawing 3 is the structural representation of the gear among Fig. 2.
Accompanying drawing 4 is the structural representation of the interior cover among Fig. 2.
Shown in the figure: 1, main shaft, 2, gear, 2.1, the taper counterbore, 3, interior cover, 3.1, through hole, 4, nut, 5, bolt, 6, resilient pad.
Embodiment:
The invention will be further described below in conjunction with the drawings and specific embodiments:
As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, the expansion set device of birotor pump of the present invention, comprise the gear 2 that is socketed on the main shaft 1, it also comprises socket and circumferential spacing interior cover 3 on main shaft 1, screw the nut 4 on main shaft 1, a plurality of bolts 5, center hole one end of described gear 2 be provided with outer imperial palace little and can be ccontaining in the taper counterbore 2.1 of cover 3, taper counterbore 2.1 inwalls of the outer wall of cover 3 and gear 2 are fitted in described, in described cover 3 minimum outer diameter greater than taper counterbore 2.1 minimum diameter, cover 3 can not prop up mutually with the interior edge face of taper counterbore 2.1 in making, during swelling, taper counterbore 2.1 has enough axial spaces to move for interior cover 3 conversely speaking.Corresponding axial hole 3.1 in each bolt 5 passes and is located on the cover 3 screws in the tapped hole of gear 2, and promptly gear 2 is provided with a plurality of bolts hole, and each bolt 5 screws in the bolt hole of correspondence, and described gear 2 is close on the step surface of main shaft 1 by nut 4.
Cover 3 and main shaft 1 circumferential spacing being meant in described overlap 3 in described and are connected by flat key with main shaft 1.
End face between described nut 4 and the gear 2 also is provided with resilient pad 6.
The quantity of described bolt 5 is three, and evenly distributes along the circumference of interior cover 3.
During installation, adorn flat key and gear 2 on main shaft 1, interior cover 3 is embedded into the taper counterbore 2.1 of gear 2, then load onto screw, and then the relative position of cover 3, wheel 2 tightens all bolts 5 in adjusting; Put resilient pad 6 then, screw on nut 4 again and screw.
Claims (3)
1. the expansion set device of a birotor pump, comprise the gear (2) that is socketed on the main shaft (1), it is characterized in that: it also comprises socket and circumferential spacing interior cover (3) on main shaft (1), screw the nut (4) on main shaft (1), a plurality of bolts (5), center hole one end of described gear (2) be provided with outer imperial palace little and can be ccontaining in the taper counterbore (2.1) of cover (3), taper counterbore (2.1) inwall of the outer wall of cover (3) and gear (2) is fitted in described, described in the cover (3) minimum outer diameter greater than taper counterbore (2.1) minimum diameter, each bolt (5) passes the corresponding axial hole (3.1) that is located on the interior cover (3) and screws in the tapped hole of gear (2), and described gear (2) is close on the step surface of main shaft (1) by nut (4).
2. the expansion set device of birotor pump according to claim 1, it is characterized in that: the end face between described nut (4) and the gear (2) also is provided with resilient pad (6).
3. the expansion set device of birotor pump according to claim 1, it is characterized in that: the quantity of described bolt (5) is three, and evenly distributes along the circumference of interior cover (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110188818 CN102220977B (en) | 2011-07-06 | 2011-07-06 | Expansion bushing device of birotor pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110188818 CN102220977B (en) | 2011-07-06 | 2011-07-06 | Expansion bushing device of birotor pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102220977A true CN102220977A (en) | 2011-10-19 |
| CN102220977B CN102220977B (en) | 2013-01-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110188818 Active CN102220977B (en) | 2011-07-06 | 2011-07-06 | Expansion bushing device of birotor pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102220977B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943755A (en) * | 2012-11-13 | 2013-02-27 | 宁波得利时泵业有限公司 | Rotor pump |
| CN109396875A (en) * | 2018-11-29 | 2019-03-01 | 柳州欧维姆机械股份有限公司 | A kind of more than one piece revolution class equation graduation workpieces processing overall clamping rotation clamp for machining |
| CN114560427A (en) * | 2022-03-30 | 2022-05-31 | 北京物智链科技有限公司 | Lifting synchronizer and lifting device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006129333A1 (en) * | 2005-05-30 | 2006-12-07 | O.M.P. Officine Mazzocco Pagnoni S.R.L. | Vacuum pump for vehicle motors and a one-way valve for said vacuum pump |
| CN102000967A (en) * | 2010-09-07 | 2011-04-06 | 电子科技大学 | Adaptor device for synchronous butt joint of main cone nut and flange of automobile drive axle assembly |
| CN201871919U (en) * | 2010-09-07 | 2011-06-22 | 电子科技大学 | Adapter device for synchronous butt of main cone nut and flange of car drive axle assembly |
| CN202152731U (en) * | 2011-07-06 | 2012-02-29 | 宁波得利时泵业有限公司 | Expanding sleeve device of bi-rotor pump |
-
2011
- 2011-07-06 CN CN 201110188818 patent/CN102220977B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006129333A1 (en) * | 2005-05-30 | 2006-12-07 | O.M.P. Officine Mazzocco Pagnoni S.R.L. | Vacuum pump for vehicle motors and a one-way valve for said vacuum pump |
| CN102000967A (en) * | 2010-09-07 | 2011-04-06 | 电子科技大学 | Adaptor device for synchronous butt joint of main cone nut and flange of automobile drive axle assembly |
| CN201871919U (en) * | 2010-09-07 | 2011-06-22 | 电子科技大学 | Adapter device for synchronous butt of main cone nut and flange of car drive axle assembly |
| CN202152731U (en) * | 2011-07-06 | 2012-02-29 | 宁波得利时泵业有限公司 | Expanding sleeve device of bi-rotor pump |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943755A (en) * | 2012-11-13 | 2013-02-27 | 宁波得利时泵业有限公司 | Rotor pump |
| CN102943755B (en) * | 2012-11-13 | 2016-03-02 | 宁波得利时泵业有限公司 | Rotor pump |
| CN109396875A (en) * | 2018-11-29 | 2019-03-01 | 柳州欧维姆机械股份有限公司 | A kind of more than one piece revolution class equation graduation workpieces processing overall clamping rotation clamp for machining |
| CN114560427A (en) * | 2022-03-30 | 2022-05-31 | 北京物智链科技有限公司 | Lifting synchronizer and lifting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102220977B (en) | 2013-01-16 |
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| C14 | Grant of patent or utility model | ||
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