CN102072157A - Dynamic sealing structure of planetary transmission shaft for pump - Google Patents
Dynamic sealing structure of planetary transmission shaft for pump Download PDFInfo
- Publication number
- CN102072157A CN102072157A CN 201110028386 CN201110028386A CN102072157A CN 102072157 A CN102072157 A CN 102072157A CN 201110028386 CN201110028386 CN 201110028386 CN 201110028386 A CN201110028386 A CN 201110028386A CN 102072157 A CN102072157 A CN 102072157A
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- shaft
- input shaft
- pump
- transmission shaft
- rotor
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Abstract
The invention relates to a dynamic sealing structure of a planetary transmission shaft for a pump. The structure comprises a pump body, an input shaft, a rotor which is connected with the input shaft by an intermediate transmission shaft, and a stator which is matched with the rotor, wherein the input shaft is connected with the intermediate transmission shaft by a first cardan joint; the intermediate transmission shaft is connected with the rotor by a second cardan joint; the first cardan joint is arranged outside the pump body; the second cardan joint is arranged in the pump body; the input shaft is a hollow shaft which is covered outside the intermediate transmission shaft; the input shaft and the pump body are provided with a radial seal; and a corrugated sleeve is arranged between the intermediate transmission shaft and the input shaft. The dynamic sealing structure of the planetary transmission shaft for the pump has the advantages that: the composite motion of the transmission shaft which does planetary motion is decomposed into the rotary motion of autorotation and revolution, the sealing is performed individually and respectively, the problems of the sealing and the design of a transmission structure are solved, and the dynamic sealing structure is a composite seal, has a safe and reliable sealing effect and can be widely applied to industrial production.
Description
Technical field
The present invention relates to a kind of screw pump, especially a kind of pump movable sealing structure of Gear Planet Transmission axle.
Background technique
Radial axle sealing reliably is the necessary condition of rotary type fluid machine safe operation.Motive sealing for the shaft parts design of rotation is made has contact seal, as soft packing seal, oil sealing, expansion ring seale, mechanical seal etc., and noncontact seal, as two big classes such as labyrinth seal, dynamic seals, pattern and structure are various, almost can satisfy the needs of various operating conditions.But, all so far shaft sealers all only are applicable to be the axial workpiece that rotate at the center by fixed axis rotation, it had been autobiography around self axis rotation both that Shang Weijian is fit to rotating shaft, again around the i.e. planetary motion rotation axis seal scheme of revolution of another axis swing in parallel.
A kind of screw pump that is used for transfer of highly viscous, high concentration fluid, rotor are single-head screws that eccentric helicoid forms, and stator inner surface is that a die cavity cross section is a long-round-shape twin-feed spiral face.Rotor is packed into behind the stator, and both are different, and the helicoid that cuts shapes is meshed, and forms the pump work parts.During work, the sub-axle center rotation that rotates of rotor cross section is rolled along the stator die cavity simultaneously, and is caused its center of rotation to rotate around the stator centre of form.For satisfying the motion requirement, input shaft must drive rotor by the intermediate propeller shaft of a pair of universal joint and rotation.Usually, for ease of sealing, universal joint and jack shaft are all placed in the pump housing, this moment, the motive sealing of pump was the radial seal of input shaft.Be subjected to the restriction of axial force, the intermediate propeller shaft angle of yaw minimum (≤2.5o), make the length of the pump housing become very big.Under some specified conditions, a universal joint must be shifted out the outer jack shaft transmission shaft of pump to reduce the length overall of pump, how to seal to do planetary motion, become the key of design.
Summary of the invention
The present invention will solve the shortcoming of above-mentioned prior art, and a kind of movable sealing structure that is fit to the reliable pump of rotation and revolution and sealingly secure with the Gear Planet Transmission axle simultaneously is provided.
The present invention solves the technological scheme that its technical problem adopts: this pump movable sealing structure of Gear Planet Transmission axle, comprise the pump housing, input shaft, the rotor that input shaft is connected with by intermediate propeller shaft, the stator that cooperates with rotor, input shaft is connected by first universal joint with intermediate propeller shaft, intermediate propeller shaft is connected by second universal joint with rotor, first universal joint is located at outside the pump housing, second universal joint is located within the pump housing, described input shaft is to wrap in the outer hollow shaft of intermediate propeller shaft, the input shaft and the pump housing are provided with radial seal, are provided with radiation fins between intermediate propeller shaft and the input shaft.
As preferably, described radial seal is packing seal or mechanical seal.
Inventing useful effect is: the present invention will make the compound motion of planetary motion transmission shaft, be decomposed into rotation and revolve round the sun two kinds to rotatablely move, and seal separately respectively, and solution sealing and drive mechanism design, be a kind of compound seal, sealing effect is safe and reliable, can be widely used in industrial production.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Description of reference numerals: input shaft 1, the first universal joint 2, intermediate propeller shaft 3, the second universal joints 4, rotor 5, stator 6, radial seal 7, radiation fins 8, the pump housing 9.
Embodiment
The invention will be further described below in conjunction with accompanying drawing:
Embodiment: as Fig. 1, this pump movable sealing structure of Gear Planet Transmission axle, comprise the pump housing 9, input shaft 1, the rotor 5 that input shaft 1 is connected with by intermediate propeller shaft 3, the stator 6 that cooperates with rotor 5, input shaft 1 is connected by first universal joint 2 with intermediate propeller shaft 3, intermediate propeller shaft 3 is connected by second universal joint 4 with rotor 5, first universal joint 2 is located at outside the pump housing 9, second universal joint 4 is located within the pump housing 9, input shaft 1 is the large-diameter hollow axle, intermediate propeller shaft 3 passes through wherein, the relative movement that the input shaft 1 and the pump housing are 9 is that rotate at the center, adopts the radial seal 7 of standard, can select packing seal or mechanical seal for use; Intermediate propeller shaft 3 is that circular pendulum is moving with respect to the input shaft 1 of rotation, adopts the high strength radiation fins 8 of particular design to realize sealing between the two reliably, thereby reaches this kind compound seal.
In addition to the implementation, the present invention can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (2)
1. a pump is with the movable sealing structure of Gear Planet Transmission axle, comprise the pump housing (9), input shaft (1), the rotor (5) that input shaft (1) is connected with by intermediate propeller shaft (3), the stator (6) that cooperates with rotor (5), it is characterized in that: input shaft (1) is connected by first universal joint (2) with intermediate propeller shaft (3), intermediate propeller shaft (3) is connected by second universal joint (4) with rotor (5), first universal joint (2) is located at outside the pump housing (9), second universal joint (4) is located within the pump housing (9), input shaft (1) is for wrapping in the hollow shaft outside the intermediate propeller shaft (3), input shaft (1) is provided with radial seal (7) with the pump housing (9), is provided with radiation fins (8) between intermediate propeller shaft (3) and the input shaft (1).
2. the pump according to claim 1 movable sealing structure of Gear Planet Transmission axle, it is characterized in that: described radial seal (7) is packing seal or mechanical seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110028386 CN102072157A (en) | 2011-01-24 | 2011-01-24 | Dynamic sealing structure of planetary transmission shaft for pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110028386 CN102072157A (en) | 2011-01-24 | 2011-01-24 | Dynamic sealing structure of planetary transmission shaft for pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102072157A true CN102072157A (en) | 2011-05-25 |
Family
ID=44030848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110028386 Pending CN102072157A (en) | 2011-01-24 | 2011-01-24 | Dynamic sealing structure of planetary transmission shaft for pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102072157A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116428286A (en) * | 2023-05-09 | 2023-07-14 | 武汉市恒信泰采油设备制造有限公司 | Submersible direct-drive screw pump universal joint transmission device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS551422A (en) * | 1978-06-20 | 1980-01-08 | Kojiro Hamada | Monolithic screw pump |
| DE3816581C1 (en) * | 1988-05-15 | 1989-09-21 | Lorenz 7312 Kirchheim De Baron | Universal shaft joint, particularly for an eccentric screw pump |
| CN2106247U (en) * | 1991-10-24 | 1992-06-03 | 大庆石油管理局第五采油厂 | Double cross axle universal joint transmisson single screw pump |
| CN2201498Y (en) * | 1994-03-25 | 1995-06-21 | 兰州特殊泵研究所 | Single screw pump for transport of thick oil |
| CN101338794A (en) * | 2003-09-01 | 2009-01-07 | 轴成型工程有限公司 | Homocinetic joint with a sealing arrangement |
-
2011
- 2011-01-24 CN CN 201110028386 patent/CN102072157A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS551422A (en) * | 1978-06-20 | 1980-01-08 | Kojiro Hamada | Monolithic screw pump |
| DE3816581C1 (en) * | 1988-05-15 | 1989-09-21 | Lorenz 7312 Kirchheim De Baron | Universal shaft joint, particularly for an eccentric screw pump |
| CN2106247U (en) * | 1991-10-24 | 1992-06-03 | 大庆石油管理局第五采油厂 | Double cross axle universal joint transmisson single screw pump |
| CN2201498Y (en) * | 1994-03-25 | 1995-06-21 | 兰州特殊泵研究所 | Single screw pump for transport of thick oil |
| CN101338794A (en) * | 2003-09-01 | 2009-01-07 | 轴成型工程有限公司 | Homocinetic joint with a sealing arrangement |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116428286A (en) * | 2023-05-09 | 2023-07-14 | 武汉市恒信泰采油设备制造有限公司 | Submersible direct-drive screw pump universal joint transmission device |
| CN116428286B (en) * | 2023-05-09 | 2023-10-27 | 武汉市恒信泰采油设备制造有限公司 | Submersible direct-drive screw pump universal joint transmission device |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110525 |