CN201874812U - Cam type double-rotor pump - Google Patents
Cam type double-rotor pump Download PDFInfo
- Publication number
- CN201874812U CN201874812U CN201020608485XU CN201020608485U CN201874812U CN 201874812 U CN201874812 U CN 201874812U CN 201020608485X U CN201020608485X U CN 201020608485XU CN 201020608485 U CN201020608485 U CN 201020608485U CN 201874812 U CN201874812 U CN 201874812U
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- Prior art keywords
- main shaft
- gear
- countershaft
- pump
- tapered roller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 230000007423 decrease Effects 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The utility model discloses a cam type double-rotor pump, which comprises a gear case (1), a pump body (2), a pump cover (3), a rear case cover (4), a main shaft (5), an auxiliary shaft (6), two cam rotors (7), a first gear (8.1), a second gear (8.2) and two pairs of tapered roller bearings (9); both the main shaft (5) and the auxiliary shaft (6) rotationally cooperate with the gear case (1) through one pair of tapered roller bearings (9), and the cam rotors (7) are correspondingly mounted on one end of the main shaft (5) and one end of the auxiliary shaft (6); and narrow outer race surfaces (a) of each pair of tapered roller bearings (9) correspondingly mounted on the main shaft (5) and the auxiliary shaft (6) are opposite from each other. The cam type double-rotor pump can guarantee the clearance between the end surfaces of the cam rotors and the operating cavity, and therefore, the decrease of the pressure and flow of the pump is effectively prevented.
Description
Technical field
The utility model relates to rotor pump, specifically is a kind of cammingly birotor pump.
Background technique
The working principle of cammingly 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 the opposite rotation of direction.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: gear-box, the pump housing, pump cover, back box lid, main shaft, countershaft, two cam followers, first gear, second gear; The described pump housing is fixed on a side of gear-box, described back box lid is fixed on the opposite side of gear-box, described two cam followers are located in the cavity of the pump housing and pump cover formation, and described first gear and second gear intermesh and be contained in the cavity of back box lid and gear-box formation.Described main shaft and countershaft are contained in the gear-box by front and back tapered roller bearing separately, and described pair of cams rotor is corresponding with main shaft and countershaft one end respectively fixing, and described a pair of gear is corresponding with the main shaft and the countershaft the other end respectively fixing.
There is following shortcoming in the cammingly birotor pump of above prior art: at work, main shaft is heated and has certain elongation, because bearing outer ring and pump housing close-fitting, inner ring and main shaft close-fitting, the mounting type of front and back tapered roller bearing is wide the aspectant relatively installation in outer ring, make bearing enclose be the trend of outside disengagement like this, bearing will produce the gap, it is high more that temperature rises, the gap that produces is just big more, the cam follower that causes being contained on the main shaft also can produce displacement on one side laterally, and the cam follower end face adjusted originally and the gap between the working cavity are also changed, and causes the pressure of pump and flow to descend and reduces.
The model utility content
The technical problems to be solved in the utility model is, a kind of gap that can guarantee between cam follower end face and the working cavity is provided, and effectively avoids the pressure of pump and the cammingly birotor pump that flow descends and reduces.
The technical solution of the utility model is, a kind of cammingly birotor pump with following structure is provided, and comprises gear-box, the pump housing, pump cover, back box lid, main shaft, countershaft, two cam followers, first gear, second gear and two pairs of tapered roller bearings; Described main shaft and countershaft all are rotatably assorted by a pair of tapered roller bearing and gear-box, and described cam follower is installed in a corresponding main shaft and an end of countershaft; The outer ring leptoprosopy that is contained in every pair of tapered roller bearing on corresponding main shaft and the countershaft is relative back-to-back.
After adopting above structure, the utility model compared with prior art, have the following advantages: at work, even being heated, main shaft has certain elongation, because it is relative back-to-back to be located at the outer ring leptoprosopy of every pair of tapered roller bearing on corresponding main shaft and the countershaft, be wide of every pair of tapered roller bearing at inboard, leptoprosopy in the outside, avoid making bearing enclose to be the trend of outside disengagement, the gap between cam follower end face and the working cavity be can guarantee like this, pressure and the flow decline and the minimizing of pump effectively avoided.
As improvement, described cam follower is installed in corresponding main shaft and an end of countershaft is meant, described cam follower is that bolt is connected with corresponding main shaft with countershaft, the quantity of described bolt is two or more, the parallel axes of the axis of described bolt and corresponding main shaft and countershaft, promptly the bolt of being installed not with the corresponding main shaft and the coaxial line of countershaft, avoid the bolt when the pump clockwise and anticlockwise, to be subjected to inertia and produce looseningly, guaranteed the connectivity robustness of cam follower and corresponding main shaft and countershaft.
As further improvement, described bolt evenly distributes along circumference, and is stressed so more even.
Description of drawings
Accompanying drawing is the structural representation of cammingly birotor pump of the present utility model.
As shown in the figure: 1, gear-box, 2, the pump housing, 3, pump cover, 4, back box lid, 5, main shaft, 6, countershaft, 7, cam follower, 8.1, first gear, 8.2, second gear, 9, tapered roller bearing, 10, bolt, a, outer ring leptoprosopy.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in the figure, cammingly birotor pump of the present utility model comprises gear-box 1, the pump housing 2, pump cover 3, back box lid 4, main shaft 5, countershaft 6, two cam followers 7, first gear 8.1, second gear 8.2 and two pairs of tapered roller bearings 9; The described pump housing 2 is fixed on a side of gear-box 1, described back box lid 4 is fixed on the opposite side of gear-box 1, described two cam followers 7 are located in the cavity of the pump housing 2 and pump cover 3 formation, described two gears 8 are located in the cavity of back box lid 4 and gear-box 1 formation, described pump cover 3 is fixing with the pump housing 2, sealing between the described gear-box 1 and the pump housing 2, described two gears 8 intermesh; Described main shaft 5 and countershaft 6 all are rotatably assorted with gear-box 1 by a pair of tapered roller bearing 9, be that described main shaft 5 is rotatably assorted with gear-box 1 by a pair of tapered roller bearing 9, described countershaft 6 also is rotatably assorted with gear-box 1 by a pair of tapered roller bearing 9, and described cam follower 7 is installed in a corresponding main shaft 5 and an end of countershaft 6; The outer ring leptoprosopy a that is contained in the every pair of tapered roller bearing 9 on corresponding main shaft 5 and the countershaft 6 is relative back-to-back, and promptly the leptoprosopy a of one of them tapered roller bearing 9 is away from the outer ring leptoprosopy a of the tapered roller bearing 9 of relative another one.
Described cam follower 7 is installed in corresponding main shaft 5 and an end of countershaft 6 is meant, described cam follower 7 is connected for bolt with countershaft 6 with corresponding main shaft 5, the quantity of described bolt 10 is two or more, the parallel axes of the axis of described bolt 10 and corresponding main shaft 5 and countershaft 6.Described bolt 10 evenly distributes along circumference.
Below only use preferable example and made explanation with regard to the utility model; but can not be interpreted as it is restriction to claim; the structure of the utility model technology can have other variations; be not limited to said structure; in a word, all various variations of being done in the protection domain of independent claims of the present utility model are all in protection domain of the present utility model.
Claims (3)
1. cammingly birotor pump, comprise gear-box (1), the pump housing (2), pump cover (3), back box lid (4), main shaft (5), countershaft (6), two cam followers (7), first gear (8.1), second gear (8.2) and two pairs of tapered roller bearings (9); Described main shaft (5) and countershaft (6) all are rotatably assorted by a pair of tapered roller bearing (9) and gear-box (1), and described cam follower (7) is installed in a corresponding main shaft (5) and an end of countershaft (6); It is characterized in that: the outer ring leptoprosopy (a) that is contained in the every pair of tapered roller bearing (9) on corresponding main shaft (5) and the countershaft (6) is relative back-to-back.
2. cammingly birotor pump according to claim 1, it is characterized in that: described cam follower (7) is installed in corresponding main shaft (5) and an end of countershaft (6) is meant, described cam follower (7) is connected for bolt with countershaft (6) with corresponding main shaft (5), the quantity of described bolt (10) is two or more, the parallel axes of the axis of described bolt (10) and corresponding main shaft (5) and countershaft (6).
3. cammingly birotor pump according to claim 1 is characterized in that: described bolt (10) evenly distributes along circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020608485XU CN201874812U (en) | 2010-11-08 | 2010-11-08 | Cam type double-rotor pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020608485XU CN201874812U (en) | 2010-11-08 | 2010-11-08 | Cam type double-rotor pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201874812U true CN201874812U (en) | 2011-06-22 |
Family
ID=44162730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020608485XU Expired - Lifetime CN201874812U (en) | 2010-11-08 | 2010-11-08 | Cam type double-rotor pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201874812U (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 |
| CN103541897A (en) * | 2013-09-27 | 2014-01-29 | 陈宝琛 | Outside-box supported rotary piston pump |
| CN108916038A (en) * | 2018-06-28 | 2018-11-30 | 兰州理工大学 | A kind of high-power low pulse lobed rotor pump |
-
2010
- 2010-11-08 CN CN201020608485XU patent/CN201874812U/en not_active Expired - Lifetime
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 |
| CN103541897A (en) * | 2013-09-27 | 2014-01-29 | 陈宝琛 | Outside-box supported rotary piston pump |
| CN108916038A (en) * | 2018-06-28 | 2018-11-30 | 兰州理工大学 | A kind of high-power low pulse lobed rotor pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110622 |
|
| CX01 | Expiry of patent term |