CN203674857U - Mechanical sealing sand-proof structure of submersible motor for well - Google Patents
Mechanical sealing sand-proof structure of submersible motor for well Download PDFInfo
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- CN203674857U CN203674857U CN201420145122.5U CN201420145122U CN203674857U CN 203674857 U CN203674857 U CN 203674857U CN 201420145122 U CN201420145122 U CN 201420145122U CN 203674857 U CN203674857 U CN 203674857U
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- sand
- ring
- sand prevention
- prevention
- motor shaft
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Abstract
The utility model discloses a mechanical sealing sand-proof structure of a submersible motor for a well and belongs to the technical field of submersible motors. The submersible motor is provided with an upper bearing seat; a motor shaft extends out of the upper bearing seat; a sand-proof static ring, a sand-proof moving ring and a sand sling rubber ring sleeve the motor shaft from bottom to top in turn; the sand-proof static ring is fixed at the top of the upper bearing seat; the sand sling rubber ring is in interference fit with the motor shaft; the bottom end of the sand sling rubber ring is provided with a cylindrical groove hole; the sand-proof moving ring is arranged in the groove hole and is fixedly connected with the sand sling rubber ring coaxially; the bottom surface of the sand-proof moving ring is connected with the surface of the sand-proof static ring in a movable fit mode; the inner side of the bottom opening portion of the groove hole is provided with a sealing lip; a lip opening of the sealing lip is connected with the surface of the sand-proof static ring in a movable fit mode. According to the mechanical sealing sand-proof structure of the submersible motor for the well and abrasion-resistant materials are adopted, a layer of static seal and three layers of dynamic seal are arranged so as to prevent small particles from entering into mechanical seal effectively and accordingly the service life of the submersible motor is extended.
Description
Technical field
The utility model relates to submersible motor technical field, particularly the machine envelope sand-prevention structure of submersible motor for a kind of well.
Background technology
Immersible pump is the visual plant of deep-well water lift, the whole unit work that pulls the plug when use, and owing to using under water for a long time, therefore the submersible motor of immersible pump needs sand-prevention structure, avoids small particle to enter mechanical seal and destroys sealing.Generally form by being set in successively plastics sand prevention stationary ring, the stainless steel sand prevention rotating ring on motor shaft and getting rid of husky cushion rubber at the submersible motor machine envelope sand-prevention structure of use at present, wherein, sand prevention stationary ring is fixed on the top chock of submersible motor, get rid of husky cushion rubber and motor shaft interference fit, sand prevention rotating ring is arranged in the slotted eye that gets rid of husky cushion rubber bottom and is coaxially connected with getting rid of husky cushion rubber, moving being connected of end face of the bottom surface of sand prevention rotating ring and sand prevention stationary ring.In the time of immersible pump operation, related husky cushion rubber, the sand prevention rotating ring synchronous rotary of getting rid of of the motor shaft of submersible motor, motor shaft and get rid of between husky cushion rubber and form static seal thus, sand prevention rotating ring and the friction of sand prevention stationary ring form movable sealing, thereby play sand prevention effect.But in actual use, often make small particle enter mechanical seal because of plastics sand prevention sand prevention rotating ring or stainless steel sand prevention stationary ring serious wear, machine's sealing even destroys, thereby causes submersible motor to burn, and shortens the useful life of motor.
Utility model content
Technical problem to be solved in the utility model is to overcome the problems referred to above, and the machine that a kind of well submersible motor is provided seals sand-prevention structure, adopt high-abrasive material, and three road movable sealing structures are set effectively avoid small particle to enter mechanical seal, thereby extend useful life of submersible motor.
The technical solution of the utility model is:
The machine envelope sand-prevention structure of submersible motor for a kind of well, described submersible motor is provided with top chock, motor shaft stretches out described top chock, it is characterized in that: on described motor shaft, be arranged with successively from top to bottom sand prevention stationary ring, sand prevention rotating ring and get rid of husky cushion rubber, described sand prevention stationary ring is fixed on the top of top chock, described husky cushion rubber and the motor shaft interference fit of getting rid of, its bottom is provided with cylindricality slotted eye, described sand prevention rotating ring be arranged in this slotted eye and with get rid of husky cushion rubber and be coaxially connected, getting rid of thus husky cushion rubber and sand prevention rotating ring can be with motor shaft synchronous rotary, moving being connected in surface of the bottom surface of sand prevention rotating ring and sand prevention stationary ring, the bottom opening inner side of described slotted eye is provided with sealing lip, moving being connected in surface of the lip of described sealing lip and sand prevention stationary ring.
Seal more reliably dustproof effect in order to reach, the two seals lip of step-like distribution is arranged to be in the bottom opening inner side of slotted eye described in the utility model, described sand prevention stationary ring is made up of base and boss, the side of described boss is inclined-plane, the lip of first sealing lip contacts with the end face of described base, the lip of second sealing lip and the contacts side surfaces of boss, the bottom surface of sand prevention rotating ring and the laminating of the end face of boss.So far, motor shaft and get rid of between husky cushion rubber and form static seal, the mantle friction of the lip of two seals lip and sand prevention stationary ring forms twice movable sealing, and sand prevention rotating ring and the friction of sand prevention stationary ring form the movable sealing of San road, thereby effectively avoid small particle to enter mechanical seal.
As what optimize, sand prevention stationary ring described in the utility model is fitted in a groove at top chock top, is also provided with stationary ring sealing gasket between sand prevention stationary ring and top chock, described stationary ring sealing gasket be set on motor shaft and with motor shaft interference fit.The effect of stationary ring sealing gasket is auxiliary seal, maximizes and prevents that small particle from entering mechanical seal.
As what optimize, in the slotted eye that gets rid of husky cushion rubber bottom described in the utility model, be also provided with a locating ring, described locating ring be set in the shaft shoulder place of motor shaft and with get rid of husky cushion rubber and be coaxially connected, getting rid of thus husky cushion rubber, locating ring and sand prevention rotating ring can be with motor shaft synchronous rotary, the bottom land of the end face laminating slotted eye of locating ring, bottom surface is stuck in shaft shoulder place.The effect of locating ring is to prevent from getting rid of husky cushion rubber to glide and cause the sand-prevention structure cannot normal operation.
As what optimize, sand prevention stationary ring described in the utility model adopts wear-resistant ceramic material to make.The features such as that wear-resistant ceramic has is lightweight, hardness is large, anti-wear performance good, heat resistance is good, can reduce wearing and tearing and extend life-span of sand-prevention structure.
As what optimize, sand prevention rotating ring described in the utility model adopts polytetrafluoroethylmaterial material to make.The features such as that polytetrafluoroethylene has is high temperature resistant, corrosion-resistant, coefficient of friction is low, ageing-resistant, wear and tear little, and can not adhere in the situation that friction produces high temperature, thereby ensure the useful life of sand-prevention structure.
The beneficial effects of the utility model are:
1, in the time of immersible pump operation, related husky cushion rubber, locating ring and the sand prevention rotating ring synchronous rotary of getting rid of of motor shaft of submersible motor, motor shaft and get rid of between husky cushion rubber and form static seal thus, get rid of the lip of two seals lip on husky cushion rubber and the mantle friction of sand prevention stationary ring and form twice movable sealing, sand prevention rotating ring and the friction of sand prevention stationary ring form the movable sealing of San road, thereby effectively avoid small particle to enter mechanical seal, greatly improve the useful life of submersible motor;
2, sand prevention stationary ring and sand prevention rotating ring all adopt wear-resisting, heat-resisting material to make, thereby reduce wear, and improve the life-span of sand-prevention structure and submersible motor.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment.
Embodiment
Now in conjunction with the accompanying drawings and embodiments the utility model is further described:
With reference to accompanying drawing Fig. 1, submersible motor is provided with top chock 70, and motor shaft 10 stretches out this top chock 70, is arranged with successively from top to bottom stationary ring sealing gasket 60, sand prevention stationary ring 50, sand prevention rotating ring 40, locating ring 30 and gets rid of husky cushion rubber 20 on motor shaft 10.
Wherein, the top of top chock 70 is provided with a groove, and sand prevention stationary ring 50 press-fits and is fixed in this groove, and stationary ring sealing gasket 60 is arranged between sand prevention stationary ring 50 and top chock 70, and with motor shaft 10 interference fit, play the effect of auxiliary seal.Sand prevention stationary ring 50 is made up of base and boss, and base is cylinder, and the side of boss is inclined-plane.
Get rid of husky cushion rubber 20 and form static seal with motor shaft 10 interference fit, its bottom is provided with cylindricality slotted eye, locating ring 30 be arranged in this slotted eye and with get rid of husky cushion rubber 20 and be coaxially connected, at the bottom of the end face fitting groove of locating ring 30, bottom surface is stuck in shaft shoulder place, is used for preventing from getting rid of husky cushion rubber 20 and glides and cause the sand-prevention structure cannot normal operation.The top of getting rid of husky cushion rubber 20 is provided with a taper enlarging, for shaft coupling is installed.
Sand prevention rotating ring 40 is also arranged in the slotted eye that gets rid of husky cushion rubber 20 and is coaxially connected with getting rid of husky cushion rubber 20, movable sealing together with the bottom surface of sand prevention rotating ring 40 forms with the end face laminating of sand prevention stationary ring 50 boss.
The bottom opening inner side of getting rid of husky cushion rubber 20 slotted eyes is provided with the two seals lip 21 that is step-like distribution, the lip of first sealing lip 21 contacts with the end face of sand prevention stationary ring 50 bases and forms first movable sealing, the contacts side surfaces of the lip of second sealing lip 21 and sand prevention stationary ring 50 boss forms second movable sealing, again in conjunction with sand prevention rotating ring 40 and the 50 tri-road movable sealings of sand prevention stationary ring, so far form the structure of the one static seal lower end three road movable sealing in upper end, effectively avoid small particle to enter mechanical seal.
Above-mentioned sand prevention stationary ring 50 adopts wear-resistant ceramic material to make, and above-mentioned sand prevention rotating ring 40 adopts polytetrafluoroethylmaterial material to make, and is wear-resisting, heat proof material, can reduce wear, and improves the useful life of sand-prevention structure and submersible motor.
Above-described embodiment is that content of the present utility model is further described, but this should be interpreted as to the scope of the utility model theme only limits to above-described embodiment, and all technology realizing based on foregoing all belong to scope of the present invention.
Claims (6)
1. a well seals sand-prevention structure with the machine of submersible motor, described submersible motor is provided with top chock, motor shaft stretches out described top chock, it is characterized in that: on described motor shaft, be arranged with successively from top to bottom sand prevention stationary ring, sand prevention rotating ring and get rid of husky cushion rubber, described sand prevention stationary ring is fixed on the top of top chock, described husky cushion rubber and the motor shaft interference fit of getting rid of, its bottom is provided with cylindricality slotted eye, described sand prevention rotating ring be arranged in this slotted eye and with get rid of husky cushion rubber and be coaxially connected, getting rid of thus husky cushion rubber and sand prevention rotating ring can be with motor shaft synchronous rotary, moving being connected in surface of the bottom surface of sand prevention rotating ring and sand prevention stationary ring, the bottom opening inner side of described slotted eye is provided with sealing lip, moving being connected in surface of the lip of described sealing lip and sand prevention stationary ring.
2. the machine envelope sand-prevention structure with submersible motor according to a kind of well claimed in claim 1, it is characterized in that: the bottom opening inner side of described slotted eye is provided with the two seals lip that is step-like distribution, described sand prevention stationary ring is made up of base and boss, the side of described boss is inclined-plane, the lip of first sealing lip contacts with the end face of described base, the lip of second sealing lip and the contacts side surfaces of boss, the bottom surface of sand prevention rotating ring and the laminating of the end face of boss.
3. the machine envelope sand-prevention structure with submersible motor according to a kind of well claimed in claim 1, it is characterized in that: described sand prevention stationary ring is fitted in a groove at top chock top, between sand prevention stationary ring and top chock, be also provided with stationary ring sealing gasket, described stationary ring sealing gasket be set on motor shaft and with motor shaft interference fit.
4. the machine envelope sand-prevention structure with submersible motor according to a kind of well claimed in claim 1, it is characterized in that: described in get rid of in the slotted eye of husky cushion rubber bottom and be also provided with a locating ring, described locating ring be set in the shaft shoulder place of motor shaft and with get rid of husky cushion rubber and be coaxially connected, getting rid of thus husky cushion rubber, locating ring and sand prevention rotating ring can be with motor shaft synchronous rotary, the bottom land of the end face laminating slotted eye of locating ring, bottom surface is stuck in shaft shoulder place.
5. the machine envelope sand-prevention structure with submersible motor according to a kind of well claimed in claim 1, is characterized in that: described sand prevention stationary ring adopts wear-resistant ceramic material to make.
6. the machine envelope sand-prevention structure with submersible motor according to a kind of well claimed in claim 1, is characterized in that: described sand prevention rotating ring adopts polytetrafluoroethylmaterial material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420145122.5U CN203674857U (en) | 2014-03-28 | 2014-03-28 | Mechanical sealing sand-proof structure of submersible motor for well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420145122.5U CN203674857U (en) | 2014-03-28 | 2014-03-28 | Mechanical sealing sand-proof structure of submersible motor for well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203674857U true CN203674857U (en) | 2014-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420145122.5U Expired - Fee Related CN203674857U (en) | 2014-03-28 | 2014-03-28 | Mechanical sealing sand-proof structure of submersible motor for well |
Country Status (1)
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|---|---|
| CN (1) | CN203674857U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106968967A (en) * | 2017-05-17 | 2017-07-21 | 浙江浙水工贸有限公司 | Efficient deep well pump |
| CN107681809A (en) * | 2017-11-22 | 2018-02-09 | 杭州三相科技有限公司 | Mowing motor applicable sealing device, mowing motor and hay mover |
| CN108533755A (en) * | 2018-07-10 | 2018-09-14 | 拉法泵业科技（宁波）有限公司 | A kind of conventional mechanical sealing |
| CN114046243A (en) * | 2021-11-10 | 2022-02-15 | 宝鸡航天动力泵业有限公司 | Sand prevention sealing device for plunger of horizontal directional drilling mud pump |
| CN114483960A (en) * | 2020-10-23 | 2022-05-13 | 浙江益而益智能科技有限公司 | Sealing device, sealing assembly and equipment with rotating shaft |
-
2014
- 2014-03-28 CN CN201420145122.5U patent/CN203674857U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106968967A (en) * | 2017-05-17 | 2017-07-21 | 浙江浙水工贸有限公司 | Efficient deep well pump |
| CN106968967B (en) * | 2017-05-17 | 2018-12-11 | 浙江浙水工贸有限公司 | Efficient deep well pump |
| CN107681809A (en) * | 2017-11-22 | 2018-02-09 | 杭州三相科技有限公司 | Mowing motor applicable sealing device, mowing motor and hay mover |
| CN107681809B (en) * | 2017-11-22 | 2023-12-05 | 杭州三相科技有限公司 | Sealing device suitable for mowing motor, mowing motor and mowing machine |
| CN108533755A (en) * | 2018-07-10 | 2018-09-14 | 拉法泵业科技（宁波）有限公司 | A kind of conventional mechanical sealing |
| CN114483960A (en) * | 2020-10-23 | 2022-05-13 | 浙江益而益智能科技有限公司 | Sealing device, sealing assembly and equipment with rotating shaft |
| CN114046243A (en) * | 2021-11-10 | 2022-02-15 | 宝鸡航天动力泵业有限公司 | Sand prevention sealing device for plunger of horizontal directional drilling mud pump |
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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: 20140625 |
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| CF01 | Termination of patent right due to non-payment of annual fee |