CN205669485U - A kind of motor sealing structure - Google Patents

Abstract

This utility model relates to a kind of motor sealing structure, including motor body, sucker rod, central seal pipe, hollow spindle, bearing wedge, shaft coupling and motor bottom bearing, shaft coupling and bearing wedge, shaft coupling and hollow spindle, between bearing wedge and hollow spindle, it is equipped with O-ring seals, it is additionally provided with y-shaped ring between lower end and the central seal pipe of bearing wedge, the lower section of bearing wedge is provided with two sealing bearings, and the Internal and external cycle sealing bearing offsets with central seal pipe and hollow spindle respectively.This utility model is furnished with extra multiple O-ring seals and y-shaped ring, performance is much better than the sealings such as common reinforced seal, additionally this utility model additionally uses two sealing bearings, one axiality that can improve mechanical seal and main shaft, two effects that can play sealing, sealing topology layout of the present utility model is reasonable, and sealing property is strong.

Description

A kind of motor sealing structure

Technical field

This utility model belongs to screw-pump oil-extraction equipment field, relates in particular to a kind of motor sealing structure.

Background technology

At present, commonly used two kinds of Screw Pump of Oil Field ground pumping unit seals structure, a kind of packing for motor bottom Sealing, another is the mode of mechanical seal of motor shaft head, and the former needs often adjust packing thrust and easily leak Oil, the latter's sealing effectiveness is preferable, but structure is complex, slightly deal with improperly will seal failure, and both seals one Denier seal failure, the consequence caused is exactly that well Crude Oil drains to cause above motor environmental pollution, and motor cleaning is number simultaneously It is tired of and there is also certain potential safety hazard, after needing to shut down, be cleaned also have impact on production.

Although having improved through scheme in recent years, such as: patent " the sealing dress of screw pump direct-drive motor seal pipe Put 2012205426721 ", " screw pump direct-drive motor shaft extending portion sealing device 2012205426717 ", " a kind of directly-driven screw pump Seal combination pressure relief device 2011201296739 ", " screw pump ground driving device mechanically-sealing apparatus 200720017222X ", " sealing structure 201210160425X on a kind of vertical machine driving device for directly-driven screw pump ", " electricity Seal structure 200720194837X in machine direct-drive screw pump driving means ", certain depth adds the sealing longevity Life.

But it is consumable accessory as sealing, the when of always having seal failure, now can only view crude oil and spill and just know Road seal failure needs to change, and now crude oil spills or be splashed on the ground around outer surface of motor and equipment, dirty Dye is serious, cleaning difficulty, needs downtime impact to produce, and existing best technique does not the most solve this problem.

Summary of the invention

In order to solve above-mentioned technical problem, the purpose of this utility model is to provide a kind of motor sealing structure, this structure Good sealing effect.

To achieve these goals, this utility model have employed following technical scheme:

A kind of motor sealing structure, including motor body, sucker rod, central seal pipe, hollow spindle, bearing wedge, connection Axial organ and motor bottom bearing, described sucker rod runs through motor body, and described central seal pipe box is located at the outside of sucker rod, institute State the outside on central seal pipe top to be fixed with between stationary ring, and stationary ring and central seal pipe also by screw and be provided with the first sealing Circle, the lower section of described stationary ring is provided with rotating ring, described stationary ring and rotating ring end face seal, the upper end of described bearing wedge be positioned at stationary ring with The outside of rotating ring, and the middle part of bearing wedge fixes with rotating ring, described bearing wedge upper end is provided with external screw thread, described shaft coupling Inner face compression axis Pressure Block upper surface, described hollow spindle is between shaft coupling and bearing wedge, and hollow spindle passes through Flat key fixes with shaft coupling, described shaft coupling and bearing wedge, shaft coupling and hollow spindle, bearing wedge and hollow spindle it Between be equipped with O-ring seals, be additionally provided with y-shaped ring, described bearing between lower end and the central seal pipe of described bearing wedge The lower section of wedge is provided with two sealing bearings, and the Internal and external cycle sealing bearing offsets with central seal pipe and hollow spindle respectively.

Preferably: between upper end and the sucker rod of central seal pipe, be additionally provided with the first round nut, described first circle Nut is provided with external screw thread, and central seal pipe is provided with female thread, and described first round nut is joined by screw thread with central seal pipe Conjunction fixes.This structure effectively prevents central seal pipe from chewing sealing ring, simultaneously central seal pipe spindle nose can process suitable Chamfering, convenient installation and protection sealing member.

Preferably: on the central seal pipe of the bottom of described motor bottom bearing, be further fixed on the second round nut, The lower section of described second round nut is fixed with nut pressing plate.Use pressing plate is fixed, prevent because of after nut loosening leakage of oil in bearing Portion.

Preferably: described y-shaped ring is by cutting off steel ring separation between two-layer, and two-layer y-shaped ring. Double-decker can improve sealing property further.

Preferably: between upper end and the sucker rod of described shaft coupling, be sequentially provided with tightening trim ring, dish from top to bottom Root sealing ring and metal gasket, and packing_seal circle is multiple stacking.

Preferably: the top of described shaft coupling is provided with multiple screwed hole, and the adapter atop side of being fixed with clamp, Described side's clamp also fixes with sucker rod.

Preferably: the bottom of described bearing wedge is fixed with the fixing lid of sealing also by cruciform slot screw.

This utility model is furnished with the openning energy in the middle of extra multiple O-ring seals and y-shaped ring, y-shaped ring Being under pressure, rise in lower past both sides, thus plays the effect of sealing, and performance is much better than the sealings such as common reinforced seal, additionally originally Utility model additionally uses two sealing bearings, and one can improve the axiality of mechanical seal and main shaft, and two can play The effect sealed, sealing topology layout of the present utility model is reasonable, and sealing property is strong.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Fig. 2 is cross-sectional view of the present utility model.

Fig. 3 is that this utility model oil circuit when leakage of oil moves towards schematic diagram.

Detailed description of the invention

Of the present utility model embodiment is described below in detail, and the example of described embodiment is shown in the drawings, the most ad initio Represent same or similar element to same or similar label eventually or there is the element of same or like function.Below by ginseng It is exemplary for examining the embodiment that accompanying drawing describes, it is intended to be used for explaining this utility model, and it is not intended that to this utility model Restriction.

In description of the present utility model, it is to be understood that term " " center ", " longitudinally ", " laterally ", " length ", " width Degree ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", " up time Pin ", the orientation of the instruction such as " counterclockwise " or position relationship be based on orientation shown in the drawings or position relationship, be for only for ease of Describe this utility model and simplifying describe rather than instruction or the hint device of indication or element must have specific orientation, With specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.

Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or Implicitly include one or more this feature.In description of the present utility model, except as otherwise noted, the implication of " multiple " It is two or more, unless otherwise clear and definite restriction.

In this utility model, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", " Gu Fixed " etc. term should be interpreted broadly, connect for example, it may be fixing, it is also possible to be to removably connect, or be integrally connected；Can To be mechanical connection, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood as the case may be Concrete meaning in this utility model.

In this utility model, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or it D score can include that the first and second features directly contact, it is also possible to includes that the first and second features are not directly contact but logical Cross the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " include One feature is directly over second feature and oblique upper, or is merely representative of fisrt feature level height higher than second feature.First is special Levy second feature " under ", " lower section " and " below " include fisrt feature immediately below second feature and obliquely downward, or only Represent that fisrt feature level height is less than second feature.

A kind of screw pump direct-drive motor sealing structure as shown in Figure 1-Figure 3, close including motor body, sucker rod 1, center Tube sealing 2, hollow spindle 3, bearing wedge 4, shaft coupling 5 and motor bottom bearing 6, described sucker rod 1 runs through motor body, described Central seal pipe 2 is set in the outside of sucker rod 1, and the outside on described central seal pipe 2 top is fixed with stationary ring also by screw Being provided with the first sealing ring between 11, and stationary ring 11 and central seal pipe 2, the lower section of described stationary ring 11 is provided with rotating ring 12, described quiet Ring 11 and rotating ring 12 end face seal, the upper end of described bearing wedge 4 is positioned at the outside of stationary ring 11 and rotating ring 12, and bearing wedge 4 Middle part fix with rotating ring 12, described bearing wedge 4 upper end is provided with external screw thread, and described shaft coupling 5 passes through spiral shell with bearing wedge 4 Stricture of vagina cooperation fixes, and shaft coupling 5 inner face compresses described bearing wedge 4 upper surface, and described hollow spindle 3 is positioned at shaft coupling 5 And between bearing wedge 4, and hollow spindle 3 is fixed with shaft coupling 5 by flat key 17, described shaft coupling 5 and bearing wedge 4, O-ring seals 18 it is equipped with between shaft coupling 5 and hollow spindle 3, bearing wedge 4 and hollow spindle 3, described bearing wedge 4 Being additionally provided with y-shaped ring 13 between lower end and central seal pipe 2, the lower section of described bearing wedge 4 is provided with two sealing bearings 16, The Internal and external cycle sealing bearing 16 offsets with central seal pipe 2 and hollow spindle 3 respectively, and described motor bottom bearing 6 is fixed with Seat Seal sleeve pipe 61, described Seat Seal sleeve pipe 61, hollow spindle 3 and central seal pipe 2 form cavity, described motor bottom Bearing 6 is internal is additionally provided with leakage of oil passage 62, is additionally provided with oil leaking hole 63 outside described motor bottom bearing 6, and described cavity, leakage of oil are led to Road 62 and oil leaking hole 63 are interconnected, described Seat Seal sleeve pipe 61 and hollow spindle 3, motor bottom bearing 6 and Seat Seal The second sealing ring 66 it is equipped with between sleeve pipe 61, motor bottom bearing 6 and central seal pipe 2.

It is additionally provided with the first round nut 10 between upper end and the sucker rod 1 of central seal pipe 2, described first round nut 10 sets Having external screw thread, central seal pipe 2 to be provided with female thread, described first round nut 10 and central seal pipe 2 are by threaded engagement phase Fixing.The second round nut 64, described second circle spiral shell it is further fixed on the central seal pipe 2 of the bottom of described motor bottom bearing 6 The lower section of female 64 is fixed with nut pressing plate 65.Described y-shaped ring 13 be between two-layer, and two-layer y-shaped ring 13 by every Disconnected steel ring 14 separates.

Be sequentially provided with from top to bottom between upper end and the sucker rod 1 of described shaft coupling 5 tightening trim ring 7, packing_seal circle 8 and Metal gasket 9, and packing_seal circle 8 is multiple stacking.The top of described shaft coupling 5 is provided with multiple screwed hole 51, and shaft coupling 5 pushes up The side of being fixed with of portion clamp 19, described side's clamp 19 also fixes with sucker rod 1.The bottom of described bearing wedge 4 is also by cross Grooved screw is fixed with the fixing lid 15 of sealing.

It should be pointed out that, that above example is only representative example of the present utility model.This utility model can also have many Deformation.Every any simple modification, equivalent variations and modification above example made according to essence of the present utility model, all It is considered as belonging to protection domain of the present utility model.

Claims (7)

1. a motor sealing structure, it is characterised in that: include motor body, sucker rod (1), central seal pipe (2), hollow master Axle (3), bearing wedge (4), shaft coupling (5) and motor bottom bearing (6), described sucker rod (1) runs through motor body, described in The heart seals pipe (2) and is set in the outside of sucker rod (1), and the outside on described central seal pipe (2) top is fixed with also by screw Being provided with the first sealing ring between stationary ring (11), and stationary ring (11) and central seal pipe (2), the lower section of described stationary ring (11) is provided with dynamic Ring (12), described stationary ring (11) and rotating ring (12) end face seal, the upper end of described bearing wedge (4) is positioned at stationary ring (11) and rotating ring (12) outside, and the middle part of bearing wedge (4) fixes with rotating ring (12), described bearing wedge (4) upper end is provided with external screw thread, Described shaft coupling (5) inner face compression axis Pressure Block (4) upper surface, described hollow spindle (3) is positioned at shaft coupling (5) and bearing pressure Between seat (4), and hollow spindle (3) is fixed with shaft coupling (5) by flat key (17), described shaft coupling (5) and bearing wedge (4), it is equipped with O-ring seals (18), institute between shaft coupling (5) and hollow spindle (3), bearing wedge (4) and hollow spindle (3) State and between the lower end of bearing wedge (4) and central seal pipe (2), be additionally provided with y-shaped ring (13), under described bearing wedge (4) Side is provided with two sealing bearings (16), seal the Internal and external cycle of bearing (16) respectively with central seal pipe (2) and hollow spindle (3) phase Support.

A kind of motor sealing structure the most according to claim 1, it is characterised in that: the upper end of central seal pipe (2) with take out Being additionally provided with the first round nut (10) between beam hanger (1), described first round nut (10) is provided with external screw thread, central seal pipe (2) Being provided with female thread, described first round nut (10) is fixed by threaded engagement with central seal pipe (2).

A kind of motor sealing structure the most according to claim 1, it is characterised in that: the end of described motor bottom bearing (6) Being further fixed on the second round nut (64) on the central seal pipe (2) in portion, the lower section of described second round nut (64) is fixed with nut Pressing plate (65).

A kind of motor sealing structure the most according to claim 1, it is characterised in that: described y-shaped ring (13) is two-layer, And by cutting off steel ring (14) separation between two-layer y-shaped ring (13).

A kind of motor sealing structure the most according to claim 1, it is characterised in that: the upper end of described shaft coupling (5) with take out Tightening trim ring (7), packing_seal circle (8) and metal gasket (9), and packing_seal circle it is sequentially provided with from top to bottom between beam hanger (1) (8) it is multiple stacking.

A kind of motor sealing structure the most according to claim 1, it is characterised in that: the top of described shaft coupling (5) is provided with Multiple screwed holes (51), and shaft coupling (5) the top side of being fixed with clamp (19), described side's clamp (19) also with sucker rod (1) phase Fixing.

A kind of motor sealing structure the most according to claim 1, it is characterised in that: the bottom of described bearing wedge (4) is also It is fixed with the fixing lid (15) of sealing by cruciform slot screw.