CN202646135U - Combination sealing structure of space guide vane body type twin-stage submerged pump - Google Patents
Combination sealing structure of space guide vane body type twin-stage submerged pump Download PDFInfo
- Publication number
- CN202646135U CN202646135U CN 201220301948 CN201220301948U CN202646135U CN 202646135 U CN202646135 U CN 202646135U CN 201220301948 CN201220301948 CN 201220301948 CN 201220301948 U CN201220301948 U CN 201220301948U CN 202646135 U CN202646135 U CN 202646135U
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- CN
- China
- Prior art keywords
- guide vane
- impeller
- pump shaft
- vane body
- space guide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
Disclosed is a combination sealing structure of a space guide vane body type twin-stage submerged pump. The combination sealing structure of the space guide vane body type twin-stage submerged pump comprises a pump shaft. A connecting pipe assembly, a space guide vane body, a secondary impeller, a middle section and a primary impeller are arranged along the pump shaft from top to bottom in sequence . The connecting pipe assembly and the pump shaft are connected with each other, the space guide vane body is fixed with the connecting pipe assembly, the middle section is connected with the space guide vane body, the impeller is fixed on the pump shaft, and the secondary impeller is sealed with the space guide vane body or the middle section through a sealing ring. The combination sealing structure of the space guide vane body type twin-stage submerged pump is characterized in that an impeller backflow balance hole of a through hole form is installed near the root of the secondary impeller along an axial direction of the pump shaft, the though hole is communicated with a cavity of the space guide vane body, an inner-flow type single end face self-balancing mechanical seal and a multiple skeleton type oil seal are arranged between the space guide vane body and the pump shaft, and an O-shaped sealing ring is installed between a bearing seat and the space guide vane body. According to the combination sealing structure of the space guide vane body type twin-stage submerged pump, entering of liquid into the bearing seat can be effectively prevented, and therefore protection of a bearing can be achieved, and then stable running of the bearing and a pump can be ensured, and service life of a submerged pump can be prolonged.
Description
Technical field
The utility model is specifically related to a kind of pump structure, relates in particular to a kind of combined sealing structure of spatial guide blade body formula twin-stage Under Water Pumps.
Background technique
Existing spatial guide blade body formula twin-stage long shaft submerged pump, its main structure is: comprise pump cover, spatial guide blade body, stage casing, stator, first stage impeller, secondary impeller, pump shaft, connecting tube assembly, pillar, bearing block assembly, bearing unit, fastener assembly, outside framework oil seal assembly or mechanical sealing assembly etc.Wherein spatial guide blade body, stage casing and first order bearing support and bearing are positioned under the liquid level, motor places the top on the liquid level, the stage casing is connected with the spatial guide blade body, the spatial guide blade body is connected by connecting tube, pillar and bearing support with motor, pump shaft is loaded in the middle of the pillar and can be rotated by driven by motor, and finally is transmitted on the sencond stage impeller of spatial guide blade body and middle intersegmental part.
The foot of pump is the pump cover with the suction port formula, and liquid enters through the pump cover suction port, rotates work done through first stage impeller, makes liquid stator in the stage casing enter secondary impeller, again passage and realize the conveying of liquid through between spatial guide blade body, connecting tube and pillar wall.
Because the bottom end bearing seat of spatial guide blade body and pump is immersed under the liquid level for a long time, makes the interior bearing of its bearing support very easily destroyed because of intrusion wearing and tearing, the corrosion of liquid, affects the normal work and use life-span of bearing and pump.
The model utility content
The utility model provides a kind of combined sealing structure of spatial guide blade body formula twin-stage Under Water Pumps; purpose is to solve the prior art problem; provide a kind of effective prevention liquid to enter bearing support, reach protection bearing and then assurance bearing and pump stable operation, the double sealing structure in prolongation Under Water Pumps life-span.
The utility model technological scheme that adopts of dealing with problems is:
A kind of combined sealing structure of spatial guide blade body formula twin-stage Under Water Pumps has pump shaft, is provided with successively from top to bottom connecting pipe component, has the spatial guide blade body of cavity, secondary impeller, stage casing and first stage impeller along pump shaft; The connecting pipe component end is provided with bearing support, and link together by bearing and the pump shaft of being located on the bearing support, spatial guide blade body and connecting pipe component are fixed together, the stage casing is connected with the spatial guide blade body, first stage impeller, secondary impeller are fixed on the pump shaft, and carry out the fluid motive sealing by seal ring between secondary impeller and spatial guide blade body or the stage casing, it is characterized in that: offer the impeller backflow equalizing orifice of through-hole form on secondary impeller near root along the axial direction of pump shaft, the cavity in this impeller backflow equalizing orifice and the spatial guide blade body is connected; Between spatial guide blade body and pump shaft, be provided with successively from top to bottom in-flow single end face self-balancing mechanical sealing, multiple skeleton-type oil seal along pump shaft, be provided with O-ring seals between bearing support and the spatial guide blade body.
The beneficial effects of the utility model:
In the utility model, secondary impeller backflow equalizing orifice has the balance impeller and reduces the fluid pressure effect of mechanical seal chamber, and is especially obvious to the pressure flow counterbalance effect of first stage impeller output.In-flow single end face self-balancing mechanical sealing takes full advantage of self-equilibrium characteristic and can effectively keep the sealing of pump shaft is also reduced the intrusion of liquid slag thing simultaneously, and not affected by the axle sense of rotation; The design of the multiple outside framework oil seal in pump top and O-ring seals can be to structure interval and possible sealing along the residual leaching liquid of axle, thereby effectively stoped the etch of liquid in the bearing support.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
The combined sealing structure of a kind of spatial guide blade body formula twin-stage Under Water Pumps as shown in fig. 1 has pump shaft 1, is provided with successively from top to bottom connecting pipe component 2, bearing support 3, bearing 4, the spatial guide blade body 5 with cavity and secondary impeller 6 along pump shaft 1.Connecting pipe component 2 links together with pump shaft 1 by the bearing 4 of being located on the bearing support 3, and spatial guide blade body 5 is fixed together with connecting pipe component 2, and stage casing 9, stator 11 are connected with spatial guide blade body 5; Secondary impeller 6 was fixed on up and down on the pump shaft 1 in 10 minutes with first stage impeller, liquid is through first stage impeller 10 effects, enter secondary impeller 6 by stator 11, and enter the cavity 50 of spatial guide blade body 5 through secondary impeller 6 effects, finally transfer out along connecting pipe component 2 inside and outside wall spaces.And carry out the fluid motive sealing by seal ring 8,12 respectively between secondary impeller 6 and stage casing 9 and the spatial guide blade body 5.Offer through hole by the root place along the axial direction of pump shaft 1 at secondary impeller 6, i.e. impeller backflow equalizing orifice 7, this impeller backflow equalizing orifice 7 and spatial guide blade body 5 interior cavitys 50 are connected.Between spatial guide blade body 5 and pump shaft 1, be provided with successively from top to bottom in-flow single end face self-balancing mechanical sealing 13, multiple skeleton-type oil seal 14 along pump shaft 1, be provided with O-ring seals 15 between bearing support 3 and the spatial guide blade body 5.
In the utility model, secondary impeller backflow equalizing orifice 7 has the balance impeller and reduces the fluid pressure effect of mechanical seal chamber.In-flow single end face self-balancing mechanical sealing 13 take full advantage of self-equilibrium characteristic effectively retainer shaft sealing and reduce simultaneously the intrusion of liquid slag thing, and not affected by the axle sense of rotation; The design of the multiple skeleton-type oil seal 14 in pump top and O-ring seals 15 can be to structure interval and possible sealing along the residual leaching liquid of axle, thereby effectively stoped the etch of liquid in the bearing support 3.
In sum; the combined sealing structure of secondary impeller backflow equalizing orifice, self-balancing mechanical sealing, multiple outside framework oil seal and O-ring seals in the utility model; can realize reducing liquid along the axle unlifting pressure; the axial force of balance first stage impeller head pressure liquid; effectively stop liquid to enter bearing support, reach the purpose of protection bearing and then maintenance bearing and pump stable operation, life-saving.
Claims (1)
1. the combined sealing structure of a spatial guide blade body formula twin-stage Under Water Pumps has pump shaft, is provided with successively from top to bottom connecting pipe component, has the spatial guide blade body of cavity, secondary impeller, stage casing and first stage impeller along pump shaft; The connecting pipe component end is provided with bearing support, and link together by bearing and the pump shaft of being located on the bearing support, spatial guide blade body and connecting pipe component are fixed together, the stage casing is connected with the spatial guide blade body, first stage impeller, secondary impeller are fixed on the pump shaft, and carry out the fluid motive sealing by seal ring between secondary impeller and spatial guide blade body or the stage casing, it is characterized in that: offer the impeller backflow equalizing orifice of through-hole form on secondary impeller near root along the axial direction of pump shaft, the cavity in this impeller backflow equalizing orifice and the spatial guide blade body is connected; Between spatial guide blade body and pump shaft, be provided with successively from top to bottom in-flow single end face self-balancing mechanical sealing, multiple skeleton-type oil seal along pump shaft, be provided with O-ring seals between bearing support and the spatial guide blade body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220301948 CN202646135U (en) | 2012-06-26 | 2012-06-26 | Combination sealing structure of space guide vane body type twin-stage submerged pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220301948 CN202646135U (en) | 2012-06-26 | 2012-06-26 | Combination sealing structure of space guide vane body type twin-stage submerged pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202646135U true CN202646135U (en) | 2013-01-02 |
Family
ID=47415252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220301948 Expired - Lifetime CN202646135U (en) | 2012-06-26 | 2012-06-26 | Combination sealing structure of space guide vane body type twin-stage submerged pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202646135U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452910A (en) * | 2013-06-25 | 2013-12-18 | 江苏大学 | Staggered centrifugal pump spatial guide vane |
| CN103911802A (en) * | 2014-03-04 | 2014-07-09 | 江苏神农灭菌设备有限公司 | Sterilization and quick-drying device of drum-type sterilization washing machine |
| CN103911800A (en) * | 2014-03-04 | 2014-07-09 | 江苏神农灭菌设备有限公司 | Sterilization and damping device of drum-type sterilization washing machine |
| CN104863891A (en) * | 2015-06-02 | 2015-08-26 | 沈阳潜水泵业有限公司 | Latent halogen pump casing sealing ring and impeller ring matched structure and manufacturing method thereof |
| CN107575398A (en) * | 2017-10-20 | 2018-01-12 | 项达章 | A kind of vertical submerged pump with long shaft |
| WO2021017354A1 (en) * | 2019-07-26 | 2021-02-04 | 烟台龙港泵业股份有限公司 | Symmetric type self-balancing central liquid outlet submerged pump device |
-
2012
- 2012-06-26 CN CN 201220301948 patent/CN202646135U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452910A (en) * | 2013-06-25 | 2013-12-18 | 江苏大学 | Staggered centrifugal pump spatial guide vane |
| CN103452910B (en) * | 2013-06-25 | 2016-01-20 | 江苏大学 | A kind of staggered centrifugal pump space guide vane body |
| CN103911802A (en) * | 2014-03-04 | 2014-07-09 | 江苏神农灭菌设备有限公司 | Sterilization and quick-drying device of drum-type sterilization washing machine |
| CN103911800A (en) * | 2014-03-04 | 2014-07-09 | 江苏神农灭菌设备有限公司 | Sterilization and damping device of drum-type sterilization washing machine |
| CN103911802B (en) * | 2014-03-04 | 2016-07-06 | 江苏神农灭菌设备有限公司 | The sterilizing of drum-type sterilization washing machine and fast-drying device |
| CN104863891A (en) * | 2015-06-02 | 2015-08-26 | 沈阳潜水泵业有限公司 | Latent halogen pump casing sealing ring and impeller ring matched structure and manufacturing method thereof |
| CN107575398A (en) * | 2017-10-20 | 2018-01-12 | 项达章 | A kind of vertical submerged pump with long shaft |
| WO2021017354A1 (en) * | 2019-07-26 | 2021-02-04 | 烟台龙港泵业股份有限公司 | Symmetric type self-balancing central liquid outlet submerged pump device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130102 |