CN205013280U - Three -screw pump with bearing self -locking mechanism - Google Patents
Three -screw pump with bearing self -locking mechanism Download PDFInfo
- Publication number
- CN205013280U CN205013280U CN201520738008.8U CN201520738008U CN205013280U CN 205013280 U CN205013280 U CN 205013280U CN 201520738008 U CN201520738008 U CN 201520738008U CN 205013280 U CN205013280 U CN 205013280U
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- self
- locking
- bearing
- end cap
- auto
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Abstract
The utility model particularly relates to a three -screw pump with bearing self -locking mechanism, the purpose provides a three -screw pump, three -screw pump include the pump body set up initiative screw rod, driven screw in the pump body, the inboard auto -lock steel ball that can follow radial movement that is equipped with of auto -lock frame, the outside are equipped with the auto -lock outer lane of the endwise slip that can follow the auto -lock frame, the terminal surface inboard that the auto -lock outer lane is close to the initiative screw rod shaft shoulder is equipped with the chamfer, another terminal surface of auto -lock outer lane and lock nut's an end face contaction, the external screw thread of relevant position suits on lock nut and the initiative screw rod, auto -lock frame, auto -lock steel ball, auto -lock outer lane constitute from the catch jointly. The use replaces traditional jump ring as the axial locking device of bearing from the catch, only need rotate the self -locking nut when assembling on the one hand, can realize the axial locking of bearing, makes the assembling process of screw pump very simplify, and on the other hand reduces the vibration of screw pump during operation, improvement life.
Description
Technical field
The utility model belongs to the utility model and belongs to volume type screw pump field, is specifically related to a kind of three screw pump with bearing self-locking mechanism.
Background technique
At present, in petrochemical industry, metallurgical, in the various function oil system such as power industry, the use of three screw pump is more and more extensive, three screw pump of the prior art generally arranges bearing to support initiatively screw rod in the pump housing, and frictional force when reducing initiatively screw rod rotation, but because three screw pump is subject to certain axial force in the course of the work due to the flowing of high-pressure medium, bearing inner race may be made to throw off relative to outer ring, therefore bearing inner race is needed to carry out axial restriction, mostly be at present to use jump ring to limit, but use jump ring operating difficulties, after installing, dismounting is wasted time and energy again, and there is certain axial clearance between the groove of jump ring and placement jump ring, this gap can cause three screw pump operationally to produce axial vibration, affect the performance of three screw pump.
Summary of the invention
The purpose of this utility model is to provide a kind of installation, convenient disassembly, the three screw pump of compact structure.
For achieving the above object, the technological scheme that the utility model adopts is: a kind of three screw pump with bearing self-locking mechanism, comprises inside the pump housing, the described pump housing and is provided with lining, arranges initiatively screw rod, driven screw in described lining; Described lining one end is connected with O-ring seals, flange-type protecgulum, the described pump housing is installed in the side being provided with flange-type protecgulum one end and is discharged end cap, described active screw rod has bearing near one end of flange-type protecgulum cover, corresponding to lining, the flange-type protecgulum respectively end face of two end faces of described bearing outer ring is fitted, the shaft shoulder that an end face of described bearing inner race and initiatively screw rod are arranged is fitted, an end contact of another end face and self-locking frame; Be provided with the self-locking steel ball that can move along the radial inside described self-locking frame, outside is provided with can along the outer ring of self-locking in axial sliding of self-locking frame, is provided with chamfering inside the end face that described self-locking outer ring is takeed near driving screw shaft; Another end face of described self-locking outer ring and an end contact of locking nut, described locking nut adapts with the outside thread of relevant position on active screw rod, and described self-locking frame, self-locking steel ball, self-locking outer ring form self-locking ring jointly.
The described lining the other end is provided with the cylindrical boss protruding pump body end surface, and outside described boss, cover has gasket seal, sucks end cap; Described suction end cap can rotate around the axis of boss, described suction side cover rim side face is uniformly distributed through hole, described through hole is arranged along sucking end cap radial direction, Returnning spring check lock lever being set in described through hole and being enclosed within check lock lever, described Returnning spring is connected with reset steel ball near the one end sucking end cap radial center, the other end be arranged on the button bottom sucked outside end cap and be connected; Described check lock lever contacts with reset steel ball near the one end sucking end cap radial center, and the other end is connected with button bottom; The hemispherical groove that described reset steel ball is offered on the side sucking end cap radial center and boss adapts; Described check lock lever, Returnning spring, reset steel ball, button jointly form and are rotated in place mechanism.
Preferably, being rotated in place mechanism described in needs the angle rotated around boss to arrange according to sucking end cap.
Preferably, described lining is copper material, and the described pump housing is aluminum alloy material; The described pump housing and lining interference fit.
Preferably, described lining is in axial direction provided with the cross scavenging hole run through, and one end of mounting O-shaped seal ring is provided with oil-return groove.
Preferably, described lining arranges the annular groove being used for embedded O-ring seals in one end of mounting O-shaped seal ring, and the described pump housing compresses O-ring seals by Bolt Connection flange-type protecgulum.
The utility model has following beneficial effect: use self-locking ring to replace traditional jump ring as the axial locking of bearing, rotary self-locking nut is only needed on the one hand during assembling, the axis locking of bearing can be realized, the assembly process of screw pump is greatly simplified, use self-locking ring can eliminate the axial clearance of bearing on the other hand, reduce vibration during screw pump work, improve working life.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the plan view of Fig. 1;
Fig. 3 is the sectional view A-A of Fig. 1;
Fig. 4 is the zoomed-in view B of Fig. 1;
Fig. 5 is the zoomed-in view C not locking Fig. 1 in bearing inner race situation;
Fig. 6 is the zoomed-in view C of Fig. 1 in locking bearing inner race situation.
Embodiment
As Figure 1-4, a kind of three screw pump with bearing self-locking mechanism, comprise inside the pump housing 2, the described pump housing 2 and be provided with lining 30, arrange initiatively screw rod 3, driven screw 4 in described lining 30, described lining 30 one end is connected with O-ring seals 10, flange-type protecgulum 5.The described pump housing 2 is installed in the side being provided with flange-type protecgulum 5 one end and is discharged end cap 11.Described lining 30 is copper material, and the described pump housing 2 is aluminum alloy material; The described pump housing 2 and lining 30 interference fit.The manufacturing process of the pump housing 2 can be reduced like this, reduce manufacture cost.
As shown in Figure 5,6, described active screw rod 3 has bearing 7 near one end of flange-type protecgulum 5 cover, corresponding to lining 30, the flange-type protecgulum 5 respectively end face of two end faces of described bearing 7 outer ring is fitted, the shaft shoulder that an end face of described bearing 7 inner ring and initiatively screw rod 3 are arranged is fitted, an end contact of another end face and self-locking frame 83; Be provided with the self-locking steel ball 82 that can move along the radial inside described self-locking frame 83, outside is provided with can along the outer ring of self-locking in axial sliding 81 of self-locking frame 83, and described self-locking outer ring 81 is provided with chamfering inside the end face of active screw rod 3 shaft shoulder; Another end face of described self-locking outer ring 81 and an end contact of locking nut 84, described locking nut 84 adapts with the outside thread of relevant position on active screw rod 30, and described self-locking frame 83, self-locking steel ball 82, self-locking outer ring 81 form self-locking ring 8 jointly.
When bearing 7 is installed, first active screw rod 3 is put into the relevant position of lining 30, bearing 7 is enclosed within active screw rod 3, then self-locking ring 8, locking nut 84 is inserted in successively, rotational lock nut 84, make it promote self-locking ring 8 vertically to move to bearing 7, the end face that self-locking outer ring 81, self-locking frame 83 and bearing 7 inner ring are contacted with each other is close to, and the end face that self-locking outer ring 81, self-locking frame 83 contact with each other with locking nut 84 is close to.Slide relative to self-locking frame 83 in self-locking outer ring 81 in this process, the chamfering of one end, self-locking outer ring 81 promotes self-locking steel ball 82, make its moving radially along self-locking frame 83, snap in the groove that active screw rod 3 is arranged, so just make the inner ring of bearing 7 along the movement of its axial direction by self-locking frame 83, self-locking outer ring 81 limits, self-locking frame 83 is limited along the movement of its axial direction by self-locking steel ball 82, self-locking steel ball 82 is limited along moving radially of self-locking frame 83 by self-locking outer ring 81, self-locking outer ring 81 is limited along the slip of self-locking frame 83 axis by self-locking nut 84, reach the object of the axial limiting of bearing 7 inner ring.During dismounting bearing 7, only need unscrew self-locking nut 84, promote self-locking outer ring 81, self-locking steel ball 82 is departed from the groove that active screw rod 3 is arranged, bearing 7 can be disassembled.
As Figure 1-4, described lining 30 the other end is provided with the cylindrical boss 31 protruding pump body end surface, and outside described boss 31, cover has gasket seal 9, sucks end cap 1; Described suction end cap 1 can rotate around the axis of boss 31, and described suction end cap 1 is uniformly distributed multiple through hole along side face, and through hole is arranged along sucking end cap 1 radial direction.Described through hole is built with check lock lever 24 and the Returnning spring 21 that is enclosed within check lock lever 24, and described Returnning spring 21 is connected with reset steel ball 22 near the one end sucking end cap 1 axle center, the other end be arranged on button 23 bottom sucking end cap 1 radial outside and be connected; Described check lock lever 24 contacts with reset steel ball 22 near the one end sucking end cap 1 axle center, and the other end is connected with button 23 bottom; The hemispherical groove that described reset steel ball 22 is offered on the side sucking end cap 1 axle center and boss 31 adapts.Described check lock lever 24, Returnning spring 21, reset steel ball 22, button 23 jointly formation are rotated in place mechanism 6.
Described button 23 can be mechanical type locking press button, as the ratchet locking press button of ballpoint pen hat type, also can be a common letter lock formula button, the dead bolt of one letter lock formula button is connected with check lock lever 24, rotated by key, drive dead bolt stretches, and then drives check lock lever 24 to move in heart direction wherein along the radial direction sucking end cap 1, or moves away from its center.When pressing the button 23, described button 23 drives check lock lever 24 to move in heart direction wherein along the radial direction sucking end cap 1, check lock lever 24 is made to contact reset steel ball 22, and reset steel ball 22 is pressed in hemispherical groove that boss 31 is offered, now reset steel ball 22 cannot skid off in the corresponding groove of boss 31, sucks end cap 1 and is in locking state.When described button 23 resets, described button 23 drives check lock lever 24 to move along the radial direction sucking end cap 1 to away from its center, make check lock lever 24 and reset steel ball 22 from, reset steel ball 22 pulls out by Returnning spring 21 in the corresponding groove of boss 31, and now sucking end cap 1 can rotate around boss 31 axis.
When three screw pump suction end cap 1 with discharge the angle of end cap 11 along boss 31 circumference need to change because connecting pipeline changes time, only need operating button 23 and rotate to suck end cap 1, do not need suction end cap 1 to remove to reinstall, the connection of three screw pump and pipeline is greatly simplified.
The described mechanism 6 that is rotated in place needs the angle rotated around boss 31 to arrange according to sucking end cap 1.As shown in Figure 2,3, sucking end cap 1 with discharging end cap 11 is 0 ° along the circumferential angle of boss 31, to divide along side face at suction end cap 1 and be uniformly distributed four through holes, each through hole relevant position arranges one and is rotated in place mechanism 6, described suction end cap 1, after boss 31 rotates, can be 0 °, 90 °, 180 °, 270 ° with discharging end cap 11 along the angle of boss 31 circumferencial direction.Also can to divide along side face at suction end cap 1 and be uniformly distributed six through holes, each through hole relevant position arranges one and is rotated in place mechanism 6, and now sucking end cap 1 with discharging end cap 11 along the angle of boss 31 circumference can be 0 °, 60 °, 120 °, 180 °, 240 °, 300 °.
Better mode of execution is: one end that O-ring seals installed by described lining 30 arranges annular oil-return groove, axially arranges the cross scavenging hole 12 of penetration liner 30 along lining 30.High-pressure medium flows into intake chamber by annular oil-return groove, cross scavenging hole 12, medium can be allowed like this to lubricate bearing, O-ring seals 10 after penetrating into flange-type protecgulum 5 end by the gap of initiatively screw rod 3 and driven screw 4 wedging.
Better mode of execution is: one end that O-ring seals installed by described lining 30 arranges the annular groove being used for embedded O-ring seals, the described pump housing 2 compresses O-ring seals by Bolt Connection flange-type protecgulum 5, make flange-type protecgulum 5 bear the pressure of lining 30 inner fluid, effectively reduce the axial vibration of three screw pump during work.
Claims (6)
1. the three screw pump with bearing self-locking mechanism, comprise the pump housing (2), the described pump housing (2) inner side is provided with lining (30), initiatively screw rod (3), driven screw (4) are set in described lining (30), described lining (30) one end and O-ring seals (10), flange-type protecgulum (5) connects, the described pump housing (2) is installed in the side being provided with flange-type protecgulum (5) one end and is discharged end cap (11), it is characterized in that: described active screw rod (3) has bearing (7) near one end of flange-type protecgulum (5) cover, two end faces of described bearing (7) outer ring respectively with lining (30), the corresponding end face laminating of flange-type protecgulum (5), an end face of described bearing (7) inner ring is fitted with the shaft shoulder that initiatively screw rod (3) is above arranged, an end contact of another end face and self-locking frame (83), described self-locking frame (83) inner side is provided with the self-locking steel ball (82) that can move along the radial, outside is provided with can along the outer ring of self-locking in axial sliding (81) of self-locking frame (83), and described self-locking outer ring (81) is provided with chamfering inside the end face of active screw rod (3) shaft shoulder, another end face of described self-locking outer ring (81) and an end contact of locking nut (84), described locking nut (84) adapts with the outside thread of the upper relevant position of active screw rod (30), and described self-locking frame (83), self-locking steel ball (82), self-locking outer ring (81) form self-locking ring (8) jointly.
2. a kind of three screw pump with bearing self-locking mechanism according to claim 1, it is characterized in that: described lining (30) the other end is provided with the cylindrical boss (31) protruding the pump housing (2) end face, described boss (31) outside cover has gasket seal (9), sucks end cap (1); Described suction end cap (1) can rotate around the axis of boss (31), described suction end cap (1) is uniformly distributed through hole along side face, described through hole is arranged along sucking end cap (1) radial direction, check lock lever (24) is set in described through hole and is enclosed within the Returnning spring (21) on check lock lever (24), described Returnning spring (21) is connected with reset steel ball (22) near sucking one end of end cap (1) radial center, the other end be arranged on button (23) bottom sucked outside end cap (1) and be connected; Described check lock lever (24) contacts with reset steel ball (22) near the one end sucking end cap (1) radial center, and the other end is connected with button (23) bottom; The hemispherical groove that described reset steel ball (22) is offered on the side sucking end cap (1) radial center and boss (31) adapts; Described check lock lever (24), Returnning spring (21), reset steel ball (22), button (23) jointly formation are rotated in place mechanism (6).
3. a kind of three screw pump with bearing self-locking mechanism according to claim 2, is characterized in that: described in be rotated in place mechanism (6) and arrange according to sucking the angle that rotates around boss (31) of end cap (1) needs.
4. a kind of three screw pump with bearing self-locking mechanism according to claim 2, it is characterized in that: described lining (30) is copper material, the described pump housing (2) is aluminum alloy material; The described pump housing (2) and lining (30) interference fit.
5. a kind of three screw pump with bearing self-locking mechanism according to claim 2, it is characterized in that: described lining (30) is in axial direction provided with the cross scavenging hole run through, and one end of mounting O-shaped seal ring (10) is provided with oil-return groove.
6. a kind of three screw pump with bearing self-locking mechanism according to claim 1, it is characterized in that: described lining (30) arranges the annular groove being used for embedded O-ring seals in one end of mounting O-shaped seal ring (10), the described pump housing (2) compresses O-ring seals (10) by Bolt Connection flange-type protecgulum (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520738008.8U CN205013280U (en) | 2015-09-22 | 2015-09-22 | Three -screw pump with bearing self -locking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520738008.8U CN205013280U (en) | 2015-09-22 | 2015-09-22 | Three -screw pump with bearing self -locking mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205013280U true CN205013280U (en) | 2016-02-03 |
Family
ID=55211889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520738008.8U Expired - Fee Related CN205013280U (en) | 2015-09-22 | 2015-09-22 | Three -screw pump with bearing self -locking mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205013280U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122409A (en) * | 2016-06-27 | 2016-11-16 | 芜湖市海联机械设备有限公司 | A kind of ball screw bearing arrangement |
-
2015
- 2015-09-22 CN CN201520738008.8U patent/CN205013280U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122409A (en) * | 2016-06-27 | 2016-11-16 | 芜湖市海联机械设备有限公司 | A kind of ball screw bearing arrangement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160203 Termination date: 20170922 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |