CN103174646A - Tip support device used in single screw pump - Google Patents
Tip support device used in single screw pump Download PDFInfo
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- CN103174646A CN103174646A CN2011104272459A CN201110427245A CN103174646A CN 103174646 A CN103174646 A CN 103174646A CN 2011104272459 A CN2011104272459 A CN 2011104272459A CN 201110427245 A CN201110427245 A CN 201110427245A CN 103174646 A CN103174646 A CN 103174646A
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- suspension rod
- screw
- support device
- outlet
- dunnage
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Abstract
The invention relates to a tip support device used in a single screw pump. The tip support device comprises a suspension rod chamber and a suspension rod in the suspension rod chamber, the rear end of the cylindrical suspension rod chamber is connected to the outlet bearer of the screw outlet end of the single screw pump, and the front end of the suspension rod chamber is connected with an outlet short tube; and the rear end of suspension rod is spherical in shape and is placed in a spherical concave sleeve, and is connected with a screw connection head through a screw thread in the spherical concave sleeve, the screw connection head is fixed at the screw outlet end through a flat key and a bolt, and the front end of the suspension rod traverses the center of a support plate and is fixed on the support plate through a nut and a gasket. Axial thrust is overcome at the axial thrust resource to prevent the driving members in the pump from pressures. A thrust bearing is not needed. The universal joint and the thrust bearing are weak links of the single screw pump, and the adoption of the tip support device prolongs the mechanic life of the single screw pump and substantially improves the reliability.
Description
Technical field
The present invention relates to the auxiliary device of helical rotor pump, specifically be applied to the termination support device of helical rotor pump.
Background technique
We see that the helical rotor pump of prior art is by 1x, outlet counter flange according to Fig. 6; 2x, rotor (screw rod); 3x, stator; 4x, universal joint; 5x, connecting rod; 6x, threeway; 7x, bearing support; 8x, base; 9x, transmission shaft; 10x, the first-class component of connection consist of.
the inner chamber engagement of screw rod 2x and stator 3x, the tail end of screw rod 2x links with universal joint 4x and connecting rod 5x, the tail end of connecting rod 5x is connected with transmission shaft 9x with universal joint again, connecting rod 5x and two universal joints have guaranteed that screw rod can do planetary motion in stator shape chamber, and transmit and carry on a shoulder pole square and bearing axial pushing force, transmission shaft 9x is contained in bearing support 7x with radial bearing and axial thrust bearing, if adopt can bearing axial pushing force speed reducer dedicated the time, bearing support 7x can omit, transmission shaft 9x also is connected with elastic coupling flexible coupling with motor-shaft extending with the input shaft of elastic coupling flexible coupling with the output shaft connection reducer of retarder.Screw rod 2x forms Seal cage, storage medium in the chamber engagement of stator 3x shape.When prime mover (motor and retarder) drove screw rod do planetary motion in spindle shape chamber, the medium volume in Seal cage was released the outlet of stator 3x unchangeably.The size of its thrust depends on the plane of structure size of resistance to flow output and screw rod 2x, resistance to flow output is larger, the cross dimension of screw rod 2x is larger, thrust is larger, certainly the magnitude of interference of it and screw rod also has very large relation, but the former two is main thrust source, this thrust reaction makes all driving components of screw pump all stressed on screw rod 2x.Thrust-bearing in universal joint 4x, connecting rod 6x, transmission shaft 9x and bearing support 7x is all born this powerful load.In the high-pressure service pump of large flow, this thrust can be up to 10～20 tons.Driving component is caused greatly collapsing force, reduced widely the Security of pump, reliability, What is more, its existence, can not make the high-pressure service pump of small flow, because this class pump screw diameter is little, end thrust is large, and moment of torsion is large, often the root at screw rod 2x disconnects, and is all at this moment the problem that present helical rotor pump exists.
In view of this, for the problems referred to above, propose a kind of reasonable in design and can improve the termination support device that is applied to helical rotor pump of above-mentioned disappearance.
Summary of the invention
The object of the present invention is to provide the termination support device that is applied to helical rotor pump, can extend the mechanical life of helical rotor pump, and reliability improves.
In order to reach above-mentioned purpose, the invention provides the termination support device that is applied to helical rotor pump, comprise the suspension rod that suspension rod chamber and suspension rod are indoor, rear end, described suspension rod cylindraceous chamber is connected on the outlet bearing of screw rod outlet end of helical rotor pump, and the front end of suspension rod chamber is connected with the outlet short tube; The rear end of described suspension rod is spherical and is placed in the ball impression cover, its ball impression is applied mechanically screw thread and is connected with the screw rod connecting head, described screw rod connecting head will be fixed on the screw rod outlet end with flat key and screw, and the front end of described suspension rod passes the dunnage center and is fixed on dunnage by nut and packing ring.
Described dunnage outer peripheral surface is close on the inwall of suspension rod chamber and near the position that is connected with the outlet short tube, offers flowing hole at dunnage bi-side end face.
Described dunnage left side offers rounded channels, and is enclosed within the spherical support on suspension rod when installation matches with this groove shape in this groove; Also be enclosed within simultaneously the thrust ball bearing that also has on suspension rod in the place ahead of spherical support.
The periphery of the spherical support of described dunnage left side, thrust ball bearing, nut is provided with seal ring.
The right side of described dunnage is equipped with the baffle plate that is enclosed within simultaneously on suspension rod by screw.
Described suspension rod chamber and outlet short tube and outlet bearing connection are provided with seal ring; Also be provided with seal ring between described suspension rod and ball impression cover.
Compared to prior art, the present invention arranges the termination and supports similar suspender at the delivery side of pump place, all driving components of pump " are hung " at delivery side of pump, " source " that produce in end thrust overcomes end thrust, makes the driving component " whole body " " easily " in pump, avoids pressure.Connecting rod only transmits the load square, do not bear axial force, needn't consider the strut stability problem, cross-section size can be dwindled, and two universal joints are not subjected to end thrust, can not want the thrust original paper, physical dimension can be dwindled, even available flexible axle replaces connecting rod, saves two universal joints, and the bearing in bearing support also can " loosen " relatively.Can be without thrust-bearing.Universal joint and thrust-bearing are all the weak links of helical rotor pump, and with this device, can extend the mechanical life of helical rotor pump, and reliability improves.
Whole axle power are born in the termination of screw rod (delivery side of pump end), and do not bear moment of torsion, (or bearing minimum moment of torsion), the root of screw rod (medium inlet end) only bears moment of torsion, and bearing axial pushing force not, make the force-bearing situation of screw rod root, greatly improved, can design for this reason, make the tripping pump of small flow, because this class pump screw diameter is little, moment of torsion is large, traditional helical rotor pump, larger axial force, high pulling torque all concentrate on the root of screw rod, and therefore normal root with screw rod twists off.Because connecting rod does not bear axial force, therefore act on stator with regard to the radial component that is not produced by axial force, Stator forces is improved, and connect working life.Universal joint does not bear axial force, only makes torque delivery, and stressed condition is improved, and increases the service life, and improves the reliability of single spiral shell pump machinery.Simplify the structure of universal joint, can be without the end thrust original paper.Reduce the cross-section size of connecting rod, because need not consider the strut stability problem, need not consider that axial force is on the impact of connecting rod strength.Owing to there is no axial force, can be without thrust-bearing in bearing support or retarder.
Description of drawings
Fig. 1 is the structural representation that the present invention is applied to the termination support device of helical rotor pump;
Fig. 2 is the partial enlarged drawing of Fig. 1;
Fig. 3 is the structural drawing that the present invention is applied to the dunnage in the termination support device of helical rotor pump;
Fig. 4 is the A-A sectional view of Fig. 3;
Fig. 5 is the structural drawing that the present invention is applied to the connecting rod in the termination support device of helical rotor pump;
Fig. 6 is the structural representation of the helical rotor pump of prior art.
In figure: 1-exports short tube; The 2-seal closure; The 3-nut; The 4-packing ring; The 5-seal ring; The 6-thrust ball bearing; The 7-seal ring; The 8-block; The 9-screw; The 10-suspension rod; 11-suspension rod chamber; The 12-seal ring; The 13-seal ring; 14-ball impression cover; 15-screw rod connecting head; The 16-screw; The 17-flat key; The 18-stator; The 19-screw rod; The 20-connecting ring; The 21-seal ring; The 22-connecting head; The 23-flat key; The 24-round nut; 25-guide circle; The 26-driving pin; The 27-connecting rod; The 28-threeway; The 29-connecting head; The 30-filler; The 31-packing box assembly; The 32-flat key; The 33-motor; The 34-bolt; The 35-bearing; The 36-bolt; The 37-frame; The 38-bolt; 39-exports bearing; The 40-spherical support; The 42-dunnage; The 43-flowing hole;
In Fig. 6, the helical rotor pump of prior art comprises: 1x, outlet counter flange; 2x, rotor (screw rod); 3x, stator; 4x, universal joint; 5x, connecting rod; 6x, threeway; 7x, bearing support; 8x, base; 9x, transmission shaft; 10x, connecting head.
Embodiment
Relevant detailed description of the present invention and technology contents coordinate description of drawings as follows, yet accompanying drawing only provides the use of reference with explanation, and the present invention is limited.
Please refer to Fig. 1-shown in Figure 5, the present invention is applied to the termination support device of helical rotor pump, comprise the suspension rod that suspension rod chamber and suspension rod are indoor, rear end, described suspension rod cylindraceous chamber is connected on the outlet bearing of screw rod outlet end of helical rotor pump, and the front end of suspension rod chamber is connected with the outlet short tube; The rear end of described suspension rod is spherical and is placed in the ball impression cover, its ball impression is applied mechanically screw thread and is connected with the screw rod connecting head, described screw rod connecting head will be fixed on the screw rod outlet end with flat key and screw, and the front end of described suspension rod passes the dunnage center and is fixed on dunnage by nut and packing ring.Described dunnage outer peripheral surface is close on the inwall of suspension rod chamber and near the position that is connected with the outlet short tube, offers flowing hole at dunnage bi-side end face.Described dunnage left side offers rounded channels, and is enclosed within the spherical support on suspension rod when installation matches with this groove shape in this groove; Also be enclosed within simultaneously the thrust ball bearing that also has on suspension rod in the place ahead of spherical support.The periphery of the spherical support of described dunnage left side, thrust ball bearing, nut is provided with seal closure.The right side of described dunnage is equipped with the baffle plate that is enclosed within simultaneously on suspension rod by screw.Described suspension rod chamber and outlet short tube and outlet bearing connection are provided with seal ring; Also be provided with seal ring between described suspension rod and ball impression cover.
with flat key 17 and screw 16, screw rod connecting head 15 is fixed on screw rod 19 outlet end, ball impression cover 14 use screw threads are connected with screw rod connecting head 15, the bulb of in-built suspension rod 10, swing in the interior direction of doing, the termination of screw rod connecting head 15 and bulb sliding contact, the other end of suspension rod 10 is equipped with thrust ball bearing 6, with packing ring and nut 3, 4 are fixed on suspension rod 10, the spherical support 40 of the bottom of thrust ball bearing 6 is placed in the ball impression of dunnage 42 of suspension rod chamber 11, can do universal swing, block 8 and dunnage 42 gaps that maintain 3mm are housed on the suspension rod 10 on dunnage 42 right sides, move to Way out when preventing screw rod 19 counter-rotating, dunnage 42 is fixed on suspension rod chamber 11, have larger flowing hole 43 on it, guarantee that the medium discharge is unobstructed.Utilize seal closure 2 to be connected the sphere of sealed bearing assembly seal ring 12 sealing suspension rods 10 with seal ring and pay mouthful short tube 1 use bolt and be connected with suspension rod chamber 11, use seal ring 5 seals.The pull bar 41 of suspension rod chamber 11 use pumps is connected with delivery side of pump bearing 39 with seal ring 13 sealings.Screw rod 19 is contained in the interior formation conveyor chamber of stator 18, and the right-hand member of screw rod 19 is connected with connecting head 22 with flat key 23 (without the end of the branch screw), and the sphere conehead of its in-built connecting rod 27, driving pin 26 pass the hyperbola hole of sphere conehead and the transmission pin-and-hole of connecting head 22.Circumferentially locate with guide circle 25, round nut 24 stop pin lassos 25, the structure of the universal joint of right-hand member is identical therewith.Connecting rod 27 can transmitting torque again can universal swing, satisfy screw rod 19 and do the requirement of planetary motion in walking son 13 shape chamber, connecting head 29 use packing box assembly 31 sealings of right-hand member universal joint, be connected with the shaft extension of flat key 32 with motor 33, the harmonious gap that keeps the 20mm left and right of its end face and shaft extension location, without end of the branch screw axial location, guarantee that the axial force of screw rod acts on dunnage 42 fully, whole driving components of helical rotor pump " are sling ".when motor 33 is done clockwise when rotation inverse time, drive screw rod 19 by two universal joints and connecting rod 27 and do planetary motion in stator 18, medium in conveyor chamber is from the outlet end excavationg pump of stator 18 external (direction shown in arrow), suck (direction shown in arrow) from the entrance of threeway 28, pressure in suspension rod chamber 11 equals delivery side of pump pressure, act directly on screw rod 19, produce end thrust F to the right, overlapping 14 by ball impression acts on the sphere of suspension rod 10, the frictional force of paying by means of sphere, drive suspension rod 10 and thrust ball bearing 6 rotations, the rotation of screw rod 19 planetary motions, by thrust ball bearing 6 spherical support 40, F power being passed to dunnage 42 is hung in F power on suspension rod chamber 11.All driving components in pump, pin 26 in screw rod 19 universal joints, connecting rod 27, the component such as bearing in bearing support all are not subjected to the effect of this power, sphere below thrust ball bearing 6 is paid with ball impression cover 14 interior spheres and is paid, all can do universal swing, guaranteed that screw rod 19 does the revolution of planetary motion in stator 18, the end thrust of screw rod is transmitted left when screw rod 19 counterrotating, this moment, the block 8 on suspension rod 10 turned left after 3mm, dunnage 42 by suspension rod chamber 11 is stopped, and suspension rod 10 parts such as grade can not continue to be moved to the left, and axial position is stablized.
Comprehensively above-mentioned, this kind structure can " be sling the screw rod of helical rotor pump and driving component come " and be avoided axial pressure, can guarantee to realize the planetary motion of screw rod 19, can overcome the deboost of screw rod 19, can realize reliably the termination support of helical rotor pump.
The above is only preferred embodiment of the present invention, and non-in order to limit the scope of the claims of the present invention, other use the equivalence of patent spirit of the present invention to change, and all should all belong to the scope of the claims of the present invention.
Claims (6)
1. be applied to the termination support device of helical rotor pump, it is characterized in that, comprise the suspension rod that suspension rod chamber and suspension rod are indoor, rear end, described suspension rod cylindraceous chamber is connected on the outlet bearing of screw rod outlet end of helical rotor pump, and the front end of suspension rod chamber is connected with the outlet short tube; The rear end of described suspension rod is spherical and is placed in the ball impression cover, applying mechanically screw thread in ball impression is connected with the screw rod connecting head, described screw rod connecting head will be fixed on the screw rod outlet end with flat key and screw, and the front end of described suspension rod passes the dunnage center and is fixed on dunnage by nut and packing ring.
2. the termination support device that is applied to helical rotor pump as claimed in claim 1, is characterized in that, described dunnage outer peripheral surface is close on the inwall of suspension rod chamber and near the position that is connected with the outlet short tube, offers flowing hole at dunnage bi-side end face.
3. the termination support device that is applied to helical rotor pump as claimed in claim 1, is characterized in that, described dunnage left side offers rounded channels, and the spherical support that is enclosed within when matching with this groove shape on suspension rod is installed in this groove; Also be enclosed within simultaneously the thrust ball bearing that also has on suspension rod in the place ahead of spherical support.
4. the termination support device that is applied to helical rotor pump as claimed in claim 3, is characterized in that, the periphery of the spherical support of described dunnage left side, thrust ball bearing, nut is provided with seal ring.
5. the termination support device that is applied to helical rotor pump as claimed in claim 1, is characterized in that, the right side of described dunnage is equipped with the baffle plate that is enclosed within simultaneously on suspension rod by screw.
6. the termination support device that is applied to helical rotor pump as claimed in claim 1, is characterized in that, described suspension rod chamber and outlet short tube and outlet bearing connection are provided with seal ring; Also be provided with seal ring between described suspension rod and ball impression cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104272459A CN103174646A (en) | 2011-12-20 | 2011-12-20 | Tip support device used in single screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104272459A CN103174646A (en) | 2011-12-20 | 2011-12-20 | Tip support device used in single screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103174646A true CN103174646A (en) | 2013-06-26 |
Family
ID=48634738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104272459A Pending CN103174646A (en) | 2011-12-20 | 2011-12-20 | Tip support device used in single screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103174646A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707621A (en) * | 2018-12-18 | 2019-05-03 | 江阴爱尔姆真空设备有限公司 | A kind of single-screw (single screw) pump that stator is swung |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2505136A (en) * | 1946-06-18 | 1950-04-25 | Robbins & Myers | Internal helical gear pump |
| US4273521A (en) * | 1978-02-10 | 1981-06-16 | E. T. Oakes Limited | Drive arrangement |
| CN2173871Y (en) * | 1993-08-05 | 1994-08-10 | 冀东石油勘探开发公司 | Bidirectional symmetrical single-screw oil pump |
| CN2432358Y (en) * | 2000-06-28 | 2001-05-30 | 孙平 | Polymer injection screw pump |
| CN2436694Y (en) * | 2000-06-23 | 2001-06-27 | 崔乃林 | Dropping in and taking off type electric oil submerged screw bolt pump |
| CN201193608Y (en) * | 2008-01-26 | 2009-02-11 | 马爱民 | Screw pump for deviated and horizontal wells |
-
2011
- 2011-12-20 CN CN2011104272459A patent/CN103174646A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2505136A (en) * | 1946-06-18 | 1950-04-25 | Robbins & Myers | Internal helical gear pump |
| US4273521A (en) * | 1978-02-10 | 1981-06-16 | E. T. Oakes Limited | Drive arrangement |
| CN2173871Y (en) * | 1993-08-05 | 1994-08-10 | 冀东石油勘探开发公司 | Bidirectional symmetrical single-screw oil pump |
| CN2436694Y (en) * | 2000-06-23 | 2001-06-27 | 崔乃林 | Dropping in and taking off type electric oil submerged screw bolt pump |
| CN2432358Y (en) * | 2000-06-28 | 2001-05-30 | 孙平 | Polymer injection screw pump |
| CN201193608Y (en) * | 2008-01-26 | 2009-02-11 | 马爱民 | Screw pump for deviated and horizontal wells |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707621A (en) * | 2018-12-18 | 2019-05-03 | 江阴爱尔姆真空设备有限公司 | A kind of single-screw (single screw) pump that stator is swung |
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Application publication date: 20130626 |