CN205013286U - A round pin formula universal joint for single -screw pump - Google Patents
A round pin formula universal joint for single -screw pump Download PDFInfo
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- CN205013286U CN205013286U CN201520766354.7U CN201520766354U CN205013286U CN 205013286 U CN205013286 U CN 205013286U CN 201520766354 U CN201520766354 U CN 201520766354U CN 205013286 U CN205013286 U CN 205013286U
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- power transmission
- hole
- universal joint
- transmission pin
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Abstract
The utility model discloses a round pin formula universal joint for single -screw pump, connect including even axostylus axostyle and two transmissions, two transmissions connect equal cylindrical cavity, and even the head at axostylus axostyle both ends corresponds respectively and inserts during a transmission connects, and wherein, other one end that a transmission connects is connected with the rotor interference, other one end and transmission shaft interference connection that another transmission connects, even the both ends of axostylus axostyle are the globoids, have the radial hole of declination on the globoid, the one end that passes the power round pin has the block, and the block diameter is greater than the diameter of the power that passes round pin shank, passes the other one end of power round pin for the external screw thread end, passes power round pin external screw thread end and connects the radial hole who penetrates the globoid from the transmission, then follow the transmission and connect out, screws the nut and holds at the external screw thread. The utility model discloses an open structure has reduced the part quantity of universal joint part, simple structure, and the practicality is strong, has reduced the cost of universal joint, lets the medium carried lubricate in fully entering into the universal joint, has guaranteed the reliability of universal joint.
Description
Technical field
The utility model relates to helical rotor pump, is specifically related to a kind of pin universal joint for helical rotor pump.
Background technique
Helical rotor pump is widely used in the industries such as food, chemical industry, oil, papermaking, sewage, especially when transfer of highly viscous medium and the higher medium of solid content, shows the superiority of its uniqueness.But for the characteristic of helical rotor pump self, in operation process, its rotor can do eccentric circular movement, and which kind of universal joint no matter adopt universal joint to be absolutely necessary parts, be for this reason, usual employing rubber sealing boot seals, to prevent oil leakage in universal joint in the middle of medium.But, traditional gimbal structure is complicated, part is various, as shown in Figure 4, in transmission part, straight pin 16 is installed in the pin-and-hole of coupling rod 10 and driving joint 19, in order to stop straight pin 16 to skid off in pin-and-hole, being provided with pin sheath 15 in the outside of driving joint 19 and shifting out in hole to stop straight pin.Lubrication in order to give straight pin enough in transmission part, devise skeleton rubber stuffing box gland 12 especially and sealed by whole straight pin 16, one end of rubber sealing boot 12 is fixed on coupling rod by fastening ring 11; Rubber o-ring 14 seals the gap of pin sheath 15, and one end of pin sheath 15 is fixed with Steel Cable Baffle Ring 13; Sealing gasket 18 seals the passage of center hole.Be full of lubricant oil in the chamber of skeleton rubber stuffing box gland 12 inside and driving joint 19, each friction pair is all in the middle of lubricant oil, to alleviate wearing and tearing, increase the life-span of straight pin.But in some occasion, as: high temperature media, strong corrosive media etc., skeleton rubber stuffing box gland 12 can be corroded very soon, lubricant oil can be leaked to pollution medium in the middle of medium, if containing solid particle in medium, also can enter universal joint, solid material can be deposited in the wearing and tearing accelerating straight pin in driving joint cavity, and straight pin 16 is do not lubricate under oil condition also can wear out failure prematurely.So there is the structure of rubber sealing boot and rubber seal, can not meet the demand of some industry.Because rubber parts can not be used in some occasion, as high temperature media, the medium of deep-etching or produce the medium etc. of chemical reaction with rubber.Limit the application of helical rotor pump.
Model utility content
In order to solve the above-mentioned problems in the prior art, the utility model provides a kind of pin universal joint for helical rotor pump.
The technological scheme that the utility model adopts is: a kind of pin universal joint for helical rotor pump, comprise coupling rod and two driving joints, two driving joints are circular cylindrical cavity, the head at coupling rod two ends is corresponding respectively to be inserted in a driving joint, wherein, other one of one driving joint is connected with rotor interference, and other one of another driving joint is connected with transmission shaft interference; The two ends of coupling rod are spheroids, with the radial direction through hole of drift angle on spheroid; Also comprise the power transmission pin with the radial direction through hole adaptation of spheroid, one end of power transmission pin is with block, block diameter is greater than the diameter of radial direction through hole on spheroid, other one end of power transmission pin is male end, and driving joint is connected with spheroid by the nut of being arranged in pairs or groups by power transmission pin and power transmission pin male end.
Further, two driving joints are one large one small circular cylindrical cavity, in the corresponding chamber of inserting a driving joint major part of head difference at coupling rod two ends, wherein, the microcephaly of one driving joint is connected with rotor interference, and the microcephaly of another driving joint is connected with transmission shaft interference.
Further, with the radial direction through hole of drift angle on the spheroid at coupling rod two ends; Each driving joint is provided with two groups of radial holes, and two groups of radial holes are 90 ° of vertical degree distributions, and one group is two power transmission pin-and-holes, other one group of port hole being two media and lubricating; The threaded end of power transmission pin penetrates from a power transmission pin-and-hole of driving joint, and threaded end stretches into the radial direction through hole of coupling rod termination spheroid, and then the threaded end of power transmission pin passes, by nut at threaded end from another power transmission pin-and-hole of driving joint.
Further, the threaded end of power transmission pin has radial pin-and-hole, with the nut of its adaptation has the two nut radial holes corresponding with radial pin-and-hole two ends, penetrate a cotter pin in two nut radial holes and radial pin-and-hole, cotter pin by nut together with power transmission finger setting.
Further, the intermediate portion of power transmission pin is smooth cylindrical body.
pin universal joint of the present utility model has the following advantages compared with traditional structure:
1. practicability: the elastometric boot eliminating original pin universal joint of the present utility model, eliminate the quick-wear part such as rubber o-ring, pin sheath, original pin universal joint has been done special improvement, make the structure that pin universal joint becomes open, change the linkage structure of power transmission pin, decrease the number of spare parts of Universal joint components, there is not the problem of ageing of rubber and breakage etc., more there is no the phenomenons such as lubricant pollution medium, for especially applicable when conveying high temperature media and the medium of highly corrosive, solve the problem of this kind of mass transport difficulty.Be widely used in the conveying of high temperature emulsion, achieve extraordinary market economy benefit, structure is simple, practical, significantly reduces the cost of universal joint.
2. reliability: there is not rubber parts in structure of the present utility model, also there is not lubricant oil, make of the medium being transferred and lubricate, make use of the feature of medium selflubricating fully, allow universal joint be lubricated, and on driving joint, be designed with special lubrication channel, medium circulation is facilitated to flow, prevent material to be deposited in cavity, helical rotor pump can normally run under above-mentioned several bad working environments, ensure that the reliability of universal joint.
3. Economy: in traditional universal joint, rubber sealing boot and O type rubber ring belong to easily damaged parts, in some occasion, rubber sealing boot is often damaged, needs frequently to change, and sometimes even within one month, will change once, not only expensive but also take artificial, bring very large trouble to client.Universal joint after improvement is not owing to having these easily damaged partss, and Economy improves greatly, for client has saved very large maintenance cost.
Accompanying drawing explanation
Fig. 1. gimbal structure schematic diagram of the present utility model;
Fig. 2. universal joint sectional drawing of the present utility model;
Fig. 3. using state figure of the present utility model;
Fig. 4. universal joint sectional drawing of the prior art.
Embodiment
As Figure 1-3, a kind of pin universal joint for helical rotor pump, comprise coupling rod and two driving joints, two driving joints 2 are one large one small circular cylindrical cavity, in the corresponding chamber of inserting driving joint 2 major part of head difference at coupling rod 3 two ends, wherein, the microcephaly of a driving joint is connected with rotor 1 interference, and the microcephaly of an other driving joint is connected with transmission shaft 4 interference.The two ends of coupling rod 3 are spheroids, with the radial direction through hole of drift angle on each spheroid; Each driving joint 2 is provided with two groups of radial holes, and two groups of radial holes are 90 ° of vertical degree distributions, and one group is two power transmission pin-and-holes, other one group of port hole 8 being medium and lubricating.One end of power transmission pin 5 is with block, and block diameter is greater than the diameter of radial direction through hole on power transmission pin 5 shank or spheroid, and other one end of power transmission pin 5 is male end, and the intermediate portion of power transmission pin 5 is smooth cylindrical bodys.The block of power transmission pin 5 is positioned at outside driving joint, the male end of power transmission pin 5 penetrates from a power transmission pin-and-hole of driving joint the radial direction through hole stretching into coupling rod termination spheroid, then the threaded end of power transmission pin 5 passes from another power transmission pin-and-hole of driving joint, and nut 6 is tightened on threaded end.The threaded end of power transmission pin 5 has radial pin-and-hole, with the nut 6 of its adaptation has the two nut radial holes corresponding with radial pin-and-hole two ends, after nut 6 is tightened on threaded end, cotter pin 7 penetrates from a nut radial hole, pass from another nut radial hole nut 6 again after stretching into the radial pin-and-hole of threaded end, by cotter pin 7, nut 6 and power transmission pin 5 are positioned together.
Together with the utility model rotor 1 and driving joint 2 are connected firmly by interference fit, together with transmission shaft 4 and another driving joint 2 are also connected firmly by interference fit.The two ends of coupling rod 3 are spheroidal structures, with the radial direction through hole of drift angle on sphere, are convenient to power transmission pin 5 and pass.One end of power transmission pin 5 is with block, and the diameter of block is greater than the working diameter of shank, to prevent power transmission pin from pin-and-hole slippage, other one end of power transmission pin 5 is outside thread, male end also has radial pin-and-hole, when power transmission pin 5 is through pin-and-hole, the nut 6 being provided with perforate is tightened on male end.The intermediate portion of power transmission pin 5 is smooth cylindrical bodys, is the main part of the force of transmitting torque.
Due to universal joint operationally, teetertotter, coupling rod 3, power transmission pin 5 etc. are ceaselessly in motion, so, the nut 6 being screwed in power transmission pin 5 end is easy to get loose and drop, drop to prevent it, nut 6 peripheral wall has corresponding holes, when after upper jack panel 6, penetrate from the hole nut 6 peripheral wall with one end of cotter pin 7, pass from the other hole nut 6 peripheral wall through after the pin-and-hole of power transmission pin 5 male end radial direction, by cotter pin 7, nut 6 and power transmission pin 5 are positioned together, prevent nut 6 from getting loose and dropping.In order to avoid universal joint drops and timeliness due to power transmission pin 5.
Driving joint 2 is provided with two groups of radial holes, and they are 90 ° of vertical degree distributions.One group is the power transmission pin-and-hole of power transmission pin 5, and other one group is the port hole 8 of medium lubrication.Facilitating medium to flow into universal joint makes it be lubricated, and ensure that reliability and the life-span of universal joint.
Claims (5)
1. the pin universal joint for helical rotor pump, comprise coupling rod and two driving joints, it is characterized in that: two driving joints (2) are circular cylindrical cavity, the head at coupling rod (3) two ends is corresponding respectively to be inserted in a driving joint (2), wherein, other one of one driving joint is connected with rotor (1) interference, and other one of another driving joint is connected with transmission shaft (4) interference; The two ends of coupling rod (3) are spheroids, with the radial direction through hole of drift angle on spheroid; Also comprise the power transmission pin (5) with the radial direction through hole adaptation of spheroid, one end of power transmission pin (5) is with block, block diameter is greater than the diameter of radial direction through hole on spheroid, other one end of power transmission pin (5) is male end, and driving joint is connected with spheroid by the nut (6) of being arranged in pairs or groups by power transmission pin (5) and power transmission pin (5) male end.
2. a kind of pin universal joint for helical rotor pump as claimed in claim 1, it is characterized in that: two driving joints (2) are one large one small circular cylindrical cavity, in the corresponding chamber of inserting a driving joint (2) major part of head difference at coupling rod (3) two ends, wherein, the microcephaly of one driving joint is connected with rotor (1) interference, and the microcephaly of another driving joint is connected with transmission shaft (4) interference.
3. a kind of pin universal joint for helical rotor pump as claimed in claim 1 or 2, is characterized in that: with the radial direction through hole of drift angle on the spheroid at coupling rod (3) two ends; Each driving joint (2) is provided with two groups of radial holes, and two groups of radial holes are 90 ° of vertical degree distributions, and one group is two power transmission pin-and-holes, other one group of port hole (8) being two media and lubricating; The threaded end of power transmission pin (5) penetrates from a power transmission pin-and-hole of driving joint, threaded end stretches into the radial direction through hole of coupling rod termination spheroid, then the threaded end of power transmission pin (5) passes from another power transmission pin-and-hole of driving joint, and nut (6) is tightened on threaded end.
4. a kind of pin universal joint for helical rotor pump as claimed in claim 3, it is characterized in that: the threaded end of power transmission pin (5) has radial pin-and-hole, the two nut radial holes corresponding with radial pin-and-hole two ends are had with on the nut (6) of its adaptation, penetrate a cotter pin (7) in two nut radial holes and radial pin-and-hole, nut (6) and power transmission pin (5) are positioned together by cotter pin (7).
5. a kind of pin universal joint for helical rotor pump as described in claim 1,2 or 4, is characterized in that: the intermediate portion of power transmission pin (5) is smooth cylindrical body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520766354.7U CN205013286U (en) | 2015-09-30 | 2015-09-30 | A round pin formula universal joint for single -screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520766354.7U CN205013286U (en) | 2015-09-30 | 2015-09-30 | A round pin formula universal joint for single -screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205013286U true CN205013286U (en) | 2016-02-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520766354.7U Active CN205013286U (en) | 2015-09-30 | 2015-09-30 | A round pin formula universal joint for single -screw pump |
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| Country | Link |
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| CN (1) | CN205013286U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107687481A (en) * | 2017-07-20 | 2018-02-13 | 北京金风科创风电设备有限公司 | Universal coupling |
| WO2020233244A1 (en) * | 2019-05-23 | 2020-11-26 | 南京彩云机械电子制造集团有限公司 | Screw pump |
-
2015
- 2015-09-30 CN CN201520766354.7U patent/CN205013286U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107687481A (en) * | 2017-07-20 | 2018-02-13 | 北京金风科创风电设备有限公司 | Universal coupling |
| CN107687481B (en) * | 2017-07-20 | 2019-12-27 | 北京金风科创风电设备有限公司 | Universal coupling |
| WO2020233244A1 (en) * | 2019-05-23 | 2020-11-26 | 南京彩云机械电子制造集团有限公司 | Screw pump |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |