CN104895830A - External sealing structure of latent halogen pump motor and manufacturing method - Google Patents
External sealing structure of latent halogen pump motor and manufacturing method Download PDFInfo
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- CN104895830A CN104895830A CN201510296542.2A CN201510296542A CN104895830A CN 104895830 A CN104895830 A CN 104895830A CN 201510296542 A CN201510296542 A CN 201510296542A CN 104895830 A CN104895830 A CN 104895830A
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Abstract
The invention provides an external sealing structure of a latent halogen pump motor and a manufacturing method. The external sealing structure of the latent halogen pump motor is characterized in that an external mechanical sealing structure is arranged on a portion, which extends out of an inner cavity of the motor, of a rotor shaft in a cavity of an upper guide bearing block; a sealing gasket, a static ring seat, a spring, a static ring and an O-shape drubber sealing ring are sequentially arranged in a bottom hole of a sealing bush upwards; the rotor shaft penetrates out of the bottom hole of the bush; a moving ring and an O-shaped rubber sealing ring thereof are oppositely placed on the static ring; and a friction ring is inlaid in a surface, which is in contact with the static ring, of the moving ring. The manufacturing method comprises the following steps of inlaying the silicon carbide friction ring in the working surface, which is opposite to the static ring, of the stainless steel moving ring; fixing the sealing gasket, the static ring seat and the sealing bush by using screws during assembling; penetrating the rotor shaft out of the bottom hole of the mechanical sealing bush; fixing the bush and the upper guide bearing block of the motor by using a screw; sequentially placing the spring, the static ring and the O-shaped rubber sealing ring in the bush; oppositely placing the moving ring and the O-shaped rubber sealing ring; and radially fixing the moving ring and the rotor shaft by using a screw. Operation requirements of a strong corrosive liquid environment are met, and the service life of a submerged pump is prolonged.
Description
Technical field
The present invention relates to mechanical sealing technology, specifically a kind of external sealing configuration of Submerged bittern pump motor and manufacture method.
Background technique
Existing submersible pump sealing technique adopts oil sealing mostly, namely has outside framework oil seal in running shaft, has the lip-type packing of extension in parcel cross section.Be all liquid inside and outside pump chamber when usual submersible pump uses, and in motor cavity be the clear water injected before using, accidental seal leakage, does not affect operation.Submerged bittern pump is immersed in the submersible pump in the contour corrosive liquids of sylvite bittern, is different from general submersible pump, very high to seal request.What the thrust bearing due to submersible motor was selected is sliding bearing, and pump will have instantaneously when starting alters power, and rotor shaft can be subject to the power of altering to drive upper and lower play, so axially have the amount of altering.Existing submersible pump built-in type mechanical seal form, is shown in Fig. 1, in rotor shaft 5 periphery of motor atrium successively mounting spring 24, mechanical sealing linkage ring 23, mechanical sealing static ring 22 and respective O type rubber seal 25, the sealing gland 21 fixed by screw.Simultaneously also due to the built-in installation of mechanical seal, the stationary ring of mechanical seal is arranged on sealing gland, ensures by O type rubber seal with the sealing of sealing gland.Rotating ring leans on the enclasping force driven rotary of spring and axle, and rotating ring and axle ensure by O type rubber seal, and the wearing and tearing of rotating ring and stationary ring surface of contact compensate by spring.When rotor shaft is altered, rotating ring can not produce displacement by the stop of stationary ring, when altering under rotor shaft, (rotor shaft playback) rotating ring with axle with altering generation displacement at present, will depart from stationary ring, producing and reveal by the surface friction drag of O type rubber seal and rotor shaft.
Summary of the invention
The object of this invention is to provide a kind of external sealing configuration and manufacture method of Submerged bittern pump motor, meet the job requirements of deep-etching liquid environment, extend the working life of submersible pump.
The external sealing configuration of Submerged bittern pump motor of the present invention, comprises mechanical seal structure, stationary seat, it is characterized in that external mechanical seal structure is arranged in the chamber of upper leading axle bearing, rotor shaft stretches out position beyond motor atrium; Mechanical seal structure: upwards have sealing gasket, stationary seat, spring, mechanical sealing static ring and O type rubber seal in seal cartridge bottom outlet successively, rotor shaft is passed by mechanical seal lining bottom outlet; Mechanical sealing linkage ring staggered relatively and O type rubber seal thereof on mechanical sealing static ring, rotating ring and the stationary ring surface of contact of mechanical seal inlay friction ring; Manufacture method: in the opposite working of rotating ring, stationary ring stainless steel base, inlays silicon carbide as friction ring; Put at the bottom of seal cartridge by stationary seat during assembling, and sealing gasket, stationary seat, seal cartridge are screwed by screw, rotor shaft is passed by mechanical seal lining bottom outlet, then the upper leading axle bearing of mechanical seal lining and motor is screwed; In mechanical seal lining, put into spring, mechanical sealing static ring and O type rubber seal successively, mechanical sealing linkage ring staggered relatively and type rubber seal thereof, with screw, mechanical sealing linkage ring and rotor shaft radial direction are fixed.
Distinguishing feature of the present invention:
In order to ensure that Submerged bittern pump motor normally works under the operating mode of bittern, change sealing configuration into mechanical seal.Feature 1. sealing reliability, in macrocyclic operation, sealing state is very stable, and amount of leakage is very little; 2. long service life; 3. friction horsepower consumes little; 4. axle or axle sleeve are substantially not frayed; 5. service cycle is long, and end wear can compensate; 6. good anti-vibration, to the vibration of running shaft, beat and the deflection of axle to Seal cage insensitive etc.
Be because rotating ring is excessive by the surface friction drag of O type rubber seal and rotor shaft in original built-in type mechanical seal structure, with axle with altering generation displacement at present, depart from stationary ring, there occurs leakage.The present invention program changes external mechanical seal into rotor shaft, sees Fig. 3, and when ensureing rotor shaft upper and lower play, mechanical seal and axle are not subjected to displacement.The stationary ring of mechanical seal is arranged on stationary seat, and ensure by O type rubber seal with the sealing of stationary seat, stationary seat and sealing gasket are screwed on seal cartridge.Static components is first arranged on seal cartridge, then seal cartridge and static components are arranged on motor together; Rotating ring is screwed on axle, and rotating ring and axle ensure by O type rubber seal, and the wearing and tearing of rotating ring and stationary ring surface of contact compensate by spring.When needs electrical machmary maintenance and mechanical seal are safeguarded, change time, as long as the rotating ring of mechanical seal is disassembled, is dismantled by seal cartridge.Convenient to disassembly, not fragile mechanical seal.
Outstanding contributions of the present invention be mechanical seal structure is arranged in the chamber of upper leading axle bearing, rotor shaft stretches out position beyond motor atrium, and the position relationship of the rotating ring in mechanical seal structure, stationary ring and rotor shaft is exchanged, rotating ring and axle are screwed, displacement can not be produced, the O type rubber seal of stationary ring and the surface friction drag of stationary seat very little, avoid dynamic and static ring depart from.The rotor shaft material of motor is Stainless Acid Resistant Steel 3Cr13, after change structure, eliminates the relative displacement produced between O type rubber seal and rotor shaft, and the axial movement value of rotor shaft is solved by mechanical seal internal adjustment.The hardware material of mechanical seal all uses 316, improves corrosion-resistant grade.
Accompanying drawing explanation
Fig. 1 is the built-in sealing configuration of former Submerged bittern pump motor;
Fig. 2 is the external submersible motor sealing configuration of Submerged bittern pump motor of the present invention;
Fig. 3 is the seal cartridge installing stationary seat in Fig. 2.
Embodiment
The external sealing configuration of Submerged bittern pump motor of the present invention, comprises mechanical seal structure, stationary seat, it is characterized in that external mechanical seal structure is arranged in the chamber of upper leading axle bearing, rotor shaft stretches out position beyond motor atrium; Mechanical seal structure: upwards have sealing gasket 10, stationary seat 2, spring 9, mechanical sealing static ring 3 and O type rubber seal 6 in seal cartridge 1 bottom outlet successively, rotor shaft 5 is passed by mechanical seal lining 1 bottom outlet; Mechanical sealing linkage ring 4 staggered relatively and O type rubber seal 6 thereof on mechanical sealing static ring 3.
See Fig. 2, friction ring is inlayed in the workpiece face that the rotating ring 4 of mechanical seal contacts with stationary ring 3, and the thickness of rotating ring friction ring 4a, stationary ring friction ring 3a protrudes from matrix.Mechanical sealing linkage ring 4 has radial screw, fixing with rotor shaft 5 radial direction with screw 7.
Manufacture method: material requires: stationary seat 2, stationary ring 3, rotating ring 4 matrix adopt stainless steel STS316, friction ring 4a, 3a that rotating ring 4, stationary ring 3 are inlayed adopt silicon carbide SIC, spring 9 and fastening screw adopt stainless steel STS304, and seal cartridge adopts cast iron HT200.
The processing request of mechanical seal part
Structural requirement: 1, the position at mechanical seal and motor shaft and the seal cartridge place of connecing can not produce relative displacement, 2, the working pressure of spring will increase under the prerequisite ensureing mechanical seal working life, reset when guaranteeing stationary ring play.
Processing request: seal cartridge must not require sand holes, pore, crackle, burning into sand, the casting defect such as loose.Working surface roughness requirements Ra≤0.4 of stationary ring silicon carbide friction ring, planeness 0.0009,7 class precisions that working surface presses GB1184-80 relative to the interior hole perpendicularity of rotating ring perform.Working surface roughness requirements Ra≤0.05 of rotating ring silicon carbide friction ring, planeness 0.0009, rotating ring hole size precision is by H8 requirement.Seal ring surface roughness Ra≤0.8 that mechanical sealing static ring seat is installed, the perpendicularity in this surperficial opposing lower end face presses the 7 class precisions execution of GB1184-80, surface roughness Ra≤3.2 at other positions; Seal cartridge flange lower end surface and inside bottom faces parallel are not more than 0.04, and the circular runout of cylindrical seam and endoporus seam is not more than 0.025, with roughness requirements Ra≤3.2 of the junction plane of other assembling parts, and all the other component R a≤12.5.
During assembling, stationary seat 2 is put into seal cartridge 1 end, and it is by screw, sealing gasket 10, stationary seat 2, seal cartridge 1 three part screws are fixing bottom seal cartridge 1, rotor shaft 5 is passed by mechanical seal lining 1 bottom outlet, then the upper leading axle bearing 8 of mechanical seal lining 1 with motor is screwed; On stationary seat 2, place spring 9, mechanical sealing static ring 3 and O type rubber seal 6, O type rubber seal 6 staggered relatively and mechanical sealing linkage ring 4 thereof sequentially, mechanical sealing linkage ring 4 has radial screw, fixing with rotor shaft 5 radial direction with screw 7.
Claims (5)
1. an external sealing configuration for Submerged bittern pump motor, comprises mechanical seal structure, stationary seat, it is characterized in that external mechanical seal structure is arranged in the chamber of upper leading axle bearing, rotor shaft stretches out position beyond motor atrium; Mechanical seal structure: upwards have sealing gasket (10), stationary seat (2), spring (9), mechanical sealing static ring (3) and O type rubber seal (6) in seal cartridge (1) bottom outlet successively, rotor shaft (5) is passed by mechanical seal lining (1) bottom outlet; In the upper mechanical sealing linkage ring staggered relatively (4) of mechanical sealing static ring (3) and O type rubber seal (6) thereof.
2. the method for the external sealing configuration of Submerged bittern pump motor described in a manufacturing claims 1, comprise machine add mechanical seal hardware, inlay nonmetallic material, it is characterized in that, in the opposite working of the rotating ring of mechanical seal, stationary ring stainless steel base, inlaying silicon carbide as friction ring; During assembling, stationary seat (2) is put into seal cartridge (1) end, and by screw, sealing gasket (10), stationary seat (2), seal cartridge (1) three part screw are fixed in seal cartridge (1) bottom, rotor shaft (5) is passed by mechanical seal lining (1) bottom outlet, then the upper leading axle bearing (8) of mechanical seal lining (1) with motor is screwed; Spring (9), mechanical sealing static ring (3) and O type rubber seal (6), O type rubber seal (6) staggered relatively and mechanical sealing linkage ring (4) thereof is placed sequentially on stationary seat (2). mechanical sealing linkage ring (4) has radial screw, fixing with rotor shaft (5) radial direction with screw (7).
3. the manufacture method of the external sealing configuration of Submerged bittern pump motor according to claim 2, is characterized in that the thickness of rotating ring friction ring (4a), stationary ring friction ring (3a), protrudes from matrix.
4. the manufacture method of the external sealing configuration of Submerged bittern pump motor according to claim 2, it is characterized in that material requires: rotor shaft material is Stainless Acid Resistant Steel 3Cr13, all use rotating ring, stationary ring, stationary seat, spring and screw 316, friction ring adopts silicon carbide SIC, and seal cartridge adopts cast iron HT200.
5. the manufacture method of the external sealing configuration of Submerged bittern pump motor according to claim 2, it is characterized in that processing request: seal cartridge must not require sand holes, pore, crackle, burning into sand, the casting defect such as loose, working surface roughness requirements Ra≤0.4 of stationary ring silicon carbide friction ring, planeness 0.0009,7 class precisions that working surface presses GB1184-80 relative to the interior hole perpendicularity of rotating ring perform; Working surface roughness requirements Ra≤0.05 of rotating ring silicon carbide friction ring, planeness 0.0009, rotating ring hole size precision is by H8 requirement; Mechanical sealing static ring seat surface roughness Ra≤0.8 of seal ring is installed, 7 class precisions that the perpendicularity in this surperficial opposing lower end face presses GB1184-80 perform, surface roughness Ra≤3.2 at other positions; Seal cartridge flange lower end surface and inside bottom faces parallel are not more than 0.04, and the circular runout of cylindrical seam and endoporus seam is not more than 0.025, with roughness requirements Ra≤3.2 of the junction plane of other assembling parts, and all the other component R a≤12.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510296542.2A CN104895830A (en) | 2015-06-02 | 2015-06-02 | External sealing structure of latent halogen pump motor and manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510296542.2A CN104895830A (en) | 2015-06-02 | 2015-06-02 | External sealing structure of latent halogen pump motor and manufacturing method |
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| Publication Number | Publication Date |
|---|---|
| CN104895830A true CN104895830A (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510296542.2A Pending CN104895830A (en) | 2015-06-02 | 2015-06-02 | External sealing structure of latent halogen pump motor and manufacturing method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107053619A (en) * | 2017-06-16 | 2017-08-18 | 宁波千普机械制造有限公司 | A kind of glue injecting head flexible connecting structure |
| CN110715057A (en) * | 2019-10-11 | 2020-01-21 | 常熟市新冶机械制造有限公司 | Mechanical sealing ring |
| CN113931869A (en) * | 2021-09-28 | 2022-01-14 | 中核核电运行管理有限公司 | On-line maintenance method for mechanical seal of circulating water pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1238638A (en) * | 1968-07-01 | 1971-07-07 | ||
| CN1197169A (en) * | 1997-04-18 | 1998-10-28 | 陈成宗 | Self-controlling protective submersible electrical pump |
| JP2002333069A (en) * | 2001-05-10 | 2002-11-22 | Nippon Pillar Packing Co Ltd | Mechanical seal |
| CN2809286Y (en) * | 2005-07-06 | 2006-08-23 | 管海涛 | Water pump head sealing device |
| CN2893247Y (en) * | 2006-04-06 | 2007-04-25 | 天津市合润科技有限责任公司 | Pump shaft mechanical sealing device with deformed rubber O ring |
-
2015
- 2015-06-02 CN CN201510296542.2A patent/CN104895830A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1238638A (en) * | 1968-07-01 | 1971-07-07 | ||
| CN1197169A (en) * | 1997-04-18 | 1998-10-28 | 陈成宗 | Self-controlling protective submersible electrical pump |
| JP2002333069A (en) * | 2001-05-10 | 2002-11-22 | Nippon Pillar Packing Co Ltd | Mechanical seal |
| CN2809286Y (en) * | 2005-07-06 | 2006-08-23 | 管海涛 | Water pump head sealing device |
| CN2893247Y (en) * | 2006-04-06 | 2007-04-25 | 天津市合润科技有限责任公司 | Pump shaft mechanical sealing device with deformed rubber O ring |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107053619A (en) * | 2017-06-16 | 2017-08-18 | 宁波千普机械制造有限公司 | A kind of glue injecting head flexible connecting structure |
| CN110715057A (en) * | 2019-10-11 | 2020-01-21 | 常熟市新冶机械制造有限公司 | Mechanical sealing ring |
| CN113931869A (en) * | 2021-09-28 | 2022-01-14 | 中核核电运行管理有限公司 | On-line maintenance method for mechanical seal of circulating water pump |
| CN113931869B (en) * | 2021-09-28 | 2024-06-11 | 中核核电运行管理有限公司 | Online maintenance method for mechanical seal of circulating water pump |
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Application publication date: 20150909 |
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