CN101122298A - Sealing structure of single-stage single-suction centrifugal pump for chemical procedure - Google Patents
Sealing structure of single-stage single-suction centrifugal pump for chemical procedure Download PDFInfo
- Publication number
- CN101122298A CN101122298A CNA2006100300533A CN200610030053A CN101122298A CN 101122298 A CN101122298 A CN 101122298A CN A2006100300533 A CNA2006100300533 A CN A2006100300533A CN 200610030053 A CN200610030053 A CN 200610030053A CN 101122298 A CN101122298 A CN 101122298A
- Authority
- CN
- China
- Prior art keywords
- seal
- pump
- spiral
- mechanical seal
- chamber
- 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.)
- Pending
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a seal structure of a single-stage and single-suction chemical process centrifugal pump, and comprises a pump cover (1), a shaft sleeve (2), a seal chamber (3), a mechanical seal (4), a mechanical seal cover (5), and a pump chamber (6), as well as a spiral seal (7). One end of the spiral seal (7) is connected to the pump cover (1) and the seal chamber (3), while the other end of the spiral seal (7) is connected to the pump chamber (6). The beneficial effect of the invention is that the medium pressure entering the seal chamber is greatly reduced due to the pumping function of the spiral seal; thus, a general mechanical seal can be used to reduce the cost; on the other hand, the specific pressure of an end surface of the mechanical seal can be reduced, and abrasion of a friction pair is reduced, so as to prolong the usable life of the mechanical seal.
Description
Technical field
The present invention relates to a kind of single-stage single-suction centrifugal pump for chemical procedure, relate in particular to this only sealing configuration of level in the single-suction centrifugal pump for chemical procedure.
Background technique
As seen from Figure 1: in the existing single stage single suction volute pump, Seal cage 3 is the cavitys that surrounded by pump cover 1, axle sleeve 2, mechanical seal 4 and mechanical seal cover 5.When the axle envelope adopts mechanical seal, do not establish any auxiliary seal in the Seal cage 3, this is feasible when working pressure of pipeline is relatively lower; But when working pressure of pipeline when higher, the pressure in the Seal cage 3 is also corresponding higher.With hot water is example: on the one hand, when the delivering hot water, working pressure is up to 4Mpa (250 ℃ time), and the pressure limit that the existing mechanical sealing can bear is not all right so do not establish any auxiliary seal in the Seal cage 3 generally below 2.5Mpa; On the other hand, because the pressure in the Seal cage is big, the face pressure of mechanical seal 4 is very high, causes the wearing and tearing aggravation of friction pair, even mechanical seal 4 can be born the pressure from pump chamber 6, its life-span also shortens greatly.Among the figure: the medium approach axis is shown in 100.
Summary of the invention
The technical issues that need to address of the present invention have provided the sealing configuration in a kind of single-stage single-suction centrifugal pump for chemical procedure, are intended to solve above-mentioned defective.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
The present invention includes: pump cover, axle sleeve, Seal cage, mechanical seal, mechanical seal cover, pump chamber; Also comprise a spiral seal; One end and pump cover, the Seal cage of described spiral seal join, and the other end and the pump chamber of spiral seal join;
Compared with prior art, the invention has the beneficial effects as follows: because the pump action of spiral seal, the pressure medium that enters Seal cage reduces greatly; Like this, can use the mechanical seal of GENERAL TYPE, thereby reduce cost; On the other hand, can reduce the mechanical seal end surface specific pressure, reduce the degree of wear of friction pair, also just prolong the life-span of mechanical seal.
Description of drawings
Fig. 1 is the sealed structure chart of existing single stage single suction volute pump;
Fig. 2 is a structural drawing of the present invention;
Fig. 3 is an I place enlarged view among Fig. 2;
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:
By Fig. 2, Fig. 3 as seen: the present invention includes: pump cover 1, axle sleeve 2, Seal cage 3, mechanical seal 4, mechanical seal cover 5, pump chamber 6; Also comprise a spiral seal 7; One end of described spiral seal 7 joins with pump cover 1, Seal cage 3, and the other end of spiral seal 7 and pump chamber 6 join;
Settle a hole back-up ring 8 at pump cover 1, Seal cage 3 with an end connecting part of described spiral seal 7 in order to fixedly spiral seal.
The medium that chemical flow-process pump is carried is more extensive, the also corresponding difference of the working environment of its application, and the operating ambient temperature height that has, loine pressure is big.
The present invention can bear pressure from pump chamber in order to make mechanical seal, in the working life of prolonged mechanical sealing, a kind of spiral seal has been installed in the Seal cage of this pump has made auxiliary seal.Because the pump action of spiral seal, the pressure medium that enters Seal cage reduces greatly.Like this, this pump can use GENERAL TYPE mechanical seal, has reduced cost.On the other hand, can reduce the mechanical seal end surface specific pressure, reduce the degree of wear of friction pair, thereby prolong the life-span of mechanical seal 4.Among the figure: the medium approach axis is shown in 100.
Claims (2)
1. the sealing configuration in the single-stage single-suction centrifugal pump for chemical procedure comprises: pump cover (1), axle sleeve (2), Seal cage (3), mechanical seal (4), mechanical seal cover (5), pump chamber (6); It is characterized in that: also comprise a spiral seal (7); One end of described spiral seal (7) joins with pump cover (1), Seal cage (3), and the other end of spiral seal (7) and pump chamber (6) join.
2. the sealing configuration in the single-stage single-suction centrifugal pump for chemical procedure according to claim 1 is characterized in that: settle a hole back-up ring (8) in order to fixedly spiral seal at pump cover (1), Seal cage (3) with an end connecting part of described spiral seal (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100300533A CN101122298A (en) | 2006-08-11 | 2006-08-11 | Sealing structure of single-stage single-suction centrifugal pump for chemical procedure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100300533A CN101122298A (en) | 2006-08-11 | 2006-08-11 | Sealing structure of single-stage single-suction centrifugal pump for chemical procedure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101122298A true CN101122298A (en) | 2008-02-13 |
Family
ID=39084763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100300533A Pending CN101122298A (en) | 2006-08-11 | 2006-08-11 | Sealing structure of single-stage single-suction centrifugal pump for chemical procedure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101122298A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101672279B (en) * | 2009-10-17 | 2011-04-13 | 河北裕泰实业集团有限公司 | Single-stage blade pump for dimethyl ether vehicle |
| CN104019054A (en) * | 2014-05-24 | 2014-09-03 | 安徽莱恩电泵有限公司 | Self-circulation pressure reduction mechanical seal structure |
-
2006
- 2006-08-11 CN CNA2006100300533A patent/CN101122298A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101672279B (en) * | 2009-10-17 | 2011-04-13 | 河北裕泰实业集团有限公司 | Single-stage blade pump for dimethyl ether vehicle |
| CN104019054A (en) * | 2014-05-24 | 2014-09-03 | 安徽莱恩电泵有限公司 | Self-circulation pressure reduction mechanical seal structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2875099A (en) | Improved thrust bearing for multistage centrifugal pumps | |
| CN101122298A (en) | Sealing structure of single-stage single-suction centrifugal pump for chemical procedure | |
| CN103790832B (en) | A kind of automatic floating lubricating type high-lift multi-stage pump | |
| CN2926603Y (en) | Sealing structure of single-stage and single-suction chemical industry flow-path centrifugal pump | |
| CN206111656U (en) | Centrifugal pump of innovative blade | |
| CN204357754U (en) | Water pump equilibrirm water cavity configuration | |
| CN203560151U (en) | Auxiliary impeller and slurry pump | |
| CN107143517B (en) | Non-contact shaft seal structure for high-pressure pump | |
| CN101338765A (en) | High lift mining diving pump axial force balancing device | |
| CN215521359U (en) | Novel double-L-shaped sealing ring structure for pump | |
| CN211692940U (en) | Double-end-face mechanical seal centrifugal pump with flushing fluid having no pressure requirement | |
| CN205578281U (en) | Deep -well pump of self -balancing axial force | |
| CN208669684U (en) | A kind of pump shaft water seal assembly | |
| CN209976896U (en) | Fixing structure of multistage pump balance ring | |
| CN221257139U (en) | High-flow high-lift double-suction pump structure | |
| CN212616308U (en) | Magnetic liquid sealing device of liquid ring pump | |
| CN210977899U (en) | Pipeline process pump | |
| CN209510628U (en) | It can frequent start-stop formula vane pump | |
| CN105697383A (en) | Axial force self-balancing deep-well pump | |
| CN207297388U (en) | A kind of water pump for being readily disassembled maintenance | |
| CN101280787B (en) | Semi-closed type water pump packing part | |
| CN210829743U (en) | Non-sealing multi-damping energy-saving double-end support two-stage centrifugal pump | |
| CN215890562U (en) | Novel multi-stage pump balance mechanism | |
| CN207155173U (en) | A kind of hydraulic diaphragm pump power end, which moves back, unloads bushing pressing device | |
| CN220415768U (en) | Axial force energy-saving balance mechanism of pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |