CN203335454U - Anti-backflow forced circulation efficient axial flow pump - Google Patents
Anti-backflow forced circulation efficient axial flow pump Download PDFInfo
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- CN203335454U CN203335454U CN2013203633609U CN201320363360U CN203335454U CN 203335454 U CN203335454 U CN 203335454U CN 2013203633609 U CN2013203633609 U CN 2013203633609U CN 201320363360 U CN201320363360 U CN 201320363360U CN 203335454 U CN203335454 U CN 203335454U
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- pump
- backflow
- flow pump
- reflux
- forced circulation
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Abstract
The utility model relates to pumps, in particular to an anti-backflow forced circulation efficient axial flow pump. The anti-backflow forced circulation efficient axial flow pump comprises a main shaft and a pump body, wherein the pump body is connected with a short pipe through a bolt to form an inner cavity, and an impeller, a shaft sleeve, an anti-backflow device and a mechanical seal part are arranged on the main shaft in the inner cavity in sequence from right to left and are supported by a bearing assembly. The anti-backflow forced circulation efficient axial flow pump is capable of improving operating efficiency, improving wear resistance and corrosion resistance, prolonging the maintenance period, and greatly reducing production cost.
Description
Technical field
The utility model relates to pump, particularly relate to a kind of anti-backflow pump circulation high-efficiency axial-flow pump, it is applicable to the forced circulation system of vaporizer in the industries such as vacuum salt production, aluminium oxide, phosphoric acid, phosphorus ammonium, caustic soda, light industry, also can make the recycle pump of crystallizer, reactor.
Background technique
By the actual investigation with forced circulation pump to domestic each evaporator in alumina plant, no matter be the conventional construction pump that import or domestic forced circulation pump are the nonreactive reflux.The medium of its conveying is comprised of the solid particle of Al (OH) solution of Na CO ﹑ 140～150g/l of the NaOH ﹑ 20g/l of 300～320g/l and 50～100g/l.Because the medium of carrying has strong basicity, the solid particularity that contains high, easy fouling, needs 130～140 ℃ of high temperature and Internal Flow in Axial Pump etc., therefore there is following subject matter: the mechanical seal life-span is extremely short, just abrasion is serious for three months main shafts of most of less thaies, flow passage part cavitation medium, efficiency is low, there will be the pump shaft fracture when serious, cause serious equipment accident.And in axial-flow pump, intrinsic secondary back has the most direct relation to working life, pump work performance and security and stability and the frictional loss of gland seal device.Therefore, under equal operating mode, in pump, the secondary back of zones of different is the root of the problems referred to above.
Summary of the invention
The purpose of this utility model will provide a kind of anti-backflow pump circulation high-efficiency axial-flow pump exactly, and it can overcome the existing existing above defect of forced circulation pump.
The purpose of this utility model is achieved in that a kind of anti-backflow pump circulation high-efficiency axial-flow pump, comprises main shaft, the pump housing, and it is characterized in that: the pump housing is connected with short tube by bolt, and forms inner chamber; Be disposed with from right to left impeller, axle sleeve, anti-reflux, mechanical seal on the main shaft of inner chamber, and supported by bearing unit.
Be provided with anti-reflux in pump housing wheel hub.
One end of described anti-reflux is set to spiral chute and spiral power is pointed to the impeller direction, and the other end is set to streamlined and fairshaped concave surface and points to the impeller direction.
The utility model has designed an anti-reflux that points to impeller with spiral chute and spiral power in pump housing wheel hub, changed the distribution of pump internal spiral stream fully, this reflux has solved the problem refluxed in gap, simultaneously, the spiral power produced due to spiral chute effectively stops fluid outside mechanical seal, from original average less than three months, brought up to more than ten months the working life that makes mechanical seal, is more than 3 times of original axial-flow pump working life; In addition, because being set to streamlined and fairshaped concave surface, the wherein end of anti-reflux points to the impeller direction, many recirculating zones helical source of original axial-flow pump is destroyed or reduce, in the situation that Operational Limits is constant, running current drops to 298～305A from original 330～340A, and operational efficiency has on average improved 10% left and right; Be provided with axle sleeve in pump housing perforation wheel hub section, can not only play protection main shaft, anti-reflux, also play the effect of the anti-reflux in location; wear-resisting property and corrosion resistance have been strengthened; reduce noise, improved the working life of bearing, greatly reduced cost of production.
The accompanying drawing explanation
Fig. 1 is traditional forced circulation pump structural representation;
Fig. 2 is structural representation of the present utility model;
In figure: 1, bearing; 2, bearing housing; 3, main shaft; 4, mechanical seal; 5, anti-reflux; 6, axle sleeve; 7, the pump housing; 8, impeller; 9, short tube, 10, many recirculating zones, 11, pump housing wheel hub.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
With reference to accompanying drawing, a kind of anti-backflow pump circulation high-efficiency axial-flow pump, comprise main shaft 3, the pump housing 7, and it is characterized in that: the pump housing 7 is connected with short tube 9 by bolt, and form inner chamber; Be disposed with from right to left impeller 8, axle sleeve 6, anti-reflux 5, mechanical seal 4 on the main shaft 1 of inner chamber, and supported by bearing unit.Be provided with anti-reflux 5 in pump housing wheel hub.One end of described anti-reflux 5 is set to spiral chute and spiral power is pointed to the impeller direction, and the other end is set to streamlined and fairshaped concave surface and points to the impeller direction.During concrete enforcement, the utility model has designed an anti-reflux that points to impeller with spiral chute and spiral power in pump housing wheel hub, has changed the distribution of pump internal spiral stream fully.This reflux has solved the problem refluxed in gap, simultaneously, the spiral power produced due to spiral chute effectively stops fluid outside mechanical seal, and the working life that makes mechanical seal was from original average less than three months, having brought up to more than ten months, is more than 3 times of original working life; Secondly, because being set to streamlined and fairshaped concave surface, the wherein end of anti-reflux points to the impeller direction, many recirculating zones helical source of original axial-flow pump is destroyed or reduce, in the situation that Operational Limits is constant, running current drops to 298～305A from original 330～340A, and operational efficiency has on average improved 10% left and right; Be provided with axle sleeve in pump housing perforation wheel hub section, can not only play protection main shaft, anti-reflux, also play the effect of the anti-reflux in location, strengthened wear resistance and rotproofness, reduced noise, improved the working life of bearing.The utility model is on the basis of introducing, digesting, improve and improve, in optimal design, the defect existed with the pump circulation axial-flow pump for existing alumina industry vaporizer, designed a kind of complete autonomous innovation that has, can substitute the novel energy-conserving " a kind of anti-backflow pump circulation high-efficiency axial-flow pump " of same kind of products at abroad, from the end of the year 2009, the external axial-flow pump substituted on former post at many alumina factorys respectively moves so far.Facts have proved, through many enterprises' production run of nearly 4 years, be industry energy conservation synergy, cost-saving, improve environment, extended the plant maintenance cycle, having made huge contribution, obtained user's consistent favorable comment, is a kind of novel high-efficiency and energy-saving product be worthy to be popularized.
Claims (3)
1. an anti-backflow pump circulation high-efficiency axial-flow pump, comprise main shaft (3), the pump housing (7), it is characterized in that: the pump housing (7) is connected with short tube (9) by bolt, and forms inner chamber; Be disposed with from right to left impeller (8), axle sleeve (6), anti-reflux (5), mechanical seal (4) on the main shaft (1) of inner chamber, and supported by bearing unit.
2. a kind of anti-backflow pump circulation high-efficiency axial-flow pump according to claim 1, is characterized in that: in pump housing wheel hub, be provided with anti-reflux (5).
3. a kind of anti-backflow pump circulation high-efficiency axial-flow pump according to claim 1 and 2, it is characterized in that: an end of described anti-reflux (5) is set to spiral chute and spiral power is pointed to the impeller direction, and the other end is set to streamlined and fairshaped concave surface and points to the impeller direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203633609U CN203335454U (en) | 2013-06-24 | 2013-06-24 | Anti-backflow forced circulation efficient axial flow pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203633609U CN203335454U (en) | 2013-06-24 | 2013-06-24 | Anti-backflow forced circulation efficient axial flow pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203335454U true CN203335454U (en) | 2013-12-11 |
Family
ID=49704131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203633609U Expired - Fee Related CN203335454U (en) | 2013-06-24 | 2013-06-24 | Anti-backflow forced circulation efficient axial flow pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203335454U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321937A (en) * | 2013-06-24 | 2013-09-25 | 江苏英特泵阀制造有限公司 | Anti-reflux forced-circulation efficient axial flow pump |
| CN107806416A (en) * | 2017-10-20 | 2018-03-16 | 项达章 | A kind of forced circulation axial-flow pump |
-
2013
- 2013-06-24 CN CN2013203633609U patent/CN203335454U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321937A (en) * | 2013-06-24 | 2013-09-25 | 江苏英特泵阀制造有限公司 | Anti-reflux forced-circulation efficient axial flow pump |
| CN103321937B (en) * | 2013-06-24 | 2016-03-02 | 江苏英特泵阀制造有限公司 | Anti-reflux forced-circulation efficient axial flow pump |
| CN107806416A (en) * | 2017-10-20 | 2018-03-16 | 项达章 | A kind of forced circulation axial-flow 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: 20131211 Termination date: 20150624 |
|
| EXPY | Termination of patent right or utility model |