CN101871468A - Submerged pump with fluid-blocking seal - Google Patents
Submerged pump with fluid-blocking seal Download PDFInfo
- Publication number
- CN101871468A CN101871468A CN200810235505A CN200810235505A CN101871468A CN 101871468 A CN101871468 A CN 101871468A CN 200810235505 A CN200810235505 A CN 200810235505A CN 200810235505 A CN200810235505 A CN 200810235505A CN 101871468 A CN101871468 A CN 101871468A
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- CN
- China
- Prior art keywords
- fluid
- blocking
- buffer cell
- pressure
- supply tube
- 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.)
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Abstract
The invention relates to a submerged pump which injects fluid higher than the pressure of the liquid in a pump body into a buffer chamber to generate pressure difference between the buffer chamber and the pump body so that a fluid-blocking seal is implemented. Leaked liquid is prevented from being directly contacted with a bearing by arranging the buffer chamber upon an impeller of the submerged pump, a fluid-blocking supply tube is arranged in the buffer chamber, the fluid-blocking supply tube and a fluid-blocking supplier outside the pump body form the fluid-blocking seal, and the fluid-blocking seal and a pressure sensor jointly implement the sealing effect.
Description
Technical field:
The present invention relates to fluid machinery, refer in particular to a kind of Under Water Pumps that sealability is had relatively high expectations.
Background technique:
Under Water Pumps have compact structure, stable working, simple to operate, easy to maintenance, floor space is little, generalization degree advantages of higher and being widely used in the industries such as petrochemical industry, electric power, metallurgy, pharmacy, environmental protection.Because Under Water Pumps needs long transmission shaft come transmitting torque, thus to the required precision of axle and bearing than higher.But through after working long hours, impeller and the sealing of sealing between the grease chamber have failure phenomenon, cause working medium to leak entering sealing oil indoor, destroy the precision of bearing and axle, reduce the working efficiency of Under Water Pumps greatly, even the operation of the reliability of entail dangers to Under Water Pumps.
Be head it off in the past, below the sealing grease chamber, be provided with buffer cell, can improve sealing effect.This method can largely be slowed down the harm of leakage liquid, but can not eliminate fully.Under Water Pumps is after working long hours, and leakage fluid is known from experience and to be full of gradually that to continue to leak into sealing oil behind the buffer cell indoor, in case and leakage liquid enters the sealing grease chamber, have a strong impact on the working efficiency of Under Water Pumps.
Summary of the invention:
For addressing the above problem, the purpose of this invention is to provide and a kind ofly be higher than the fluid of fluid pressure in the pump housing and suppress leak of liquid in the pump housing to the Under Water Pumps of buffer cell by buffer cell is injected, below the sealing grease chamber, offer the buffer cell that can inject the fluid that has certain pressure automatically, make that the certain pressure reduction of generation can suppress the interior leak of liquid of the pump housing effectively to buffer cell between the buffer cell and the pump housing, can improve the effect of sealing effectively.
The technological scheme that realizes above-mentioned purpose is:
The present invention includes the pump housing and impeller; Under Water Pumps top connects motor and impeller and transmits moment of torsion by pump shaft for the motor of power is provided, and pump shaft fixes support by bearing; It is gentle to the chamber that the sealing grease chamber is set below axocoel; Double mechanical seal be contained in sealing oil indoor with the axle the contacting point, undertaking the seal action that seals between grease chamber and bearing and buffer cell and sealing grease chamber; Single mechanical end face seal is contained in impeller and the effect that seals is being undertaken at the pump shaft place, has sealing cover to link to each other between buffer cell and the sealing grease chamber, and sealing cover is the gentle spacer body towards the chamber in sealing grease chamber, also is the supporting mass of mechanical seal.In buffer cell, be provided with the fluid-blocking supply tube, the fluid-blocking supply tube connects the fluid-blocking feeding mechanism of pump housing outside, inject the fluid that has certain pressure at buffer cell by the fluid-blocking feeding mechanism, make in the buffer cell pressure greater than with the pump housing in the pressure of liquid, thereby effectively limit the interior leak of liquid of the pump housing to buffer cell, strengthen sealing effect.
Feature of the present invention is: set up the fluid-blocking supply tube in the buffer cell of Under Water Pumps, the fluid-blocking supply tube is realized seal action jointly with outside fluid-blocking feeding mechanism, and pressure transducer is set in buffer cell comes monitoring pressure, under pressure transducer and the acting in conjunction of fluid-blocking device, improve sealing effect effectively.
Description of drawings
Fig. 1 is the schematic representation of Under Water Pumps among the embodiment.Fig. 2 is that sequence number is the detail drawing of 9 fluid-blocking feeding mechanism among Fig. 1.
1. pump housings among the figure, 2. impeller, 3. buffer cell, 4. sealing grease chamber, 5. double mechanical seal, 6. axocoel, 7. fluid-blocking supply tube, 8. pump shaft, 9. fluid-blocking feeding mechanism, 10. one-way cock, 11 motors, 12. bearing, 13. signal cables, 14. bearings, 15. sealing cover, 16. pressure transducers, 17. outlet conduits, 18. pressure meter, 19. fluid-blocking feeding mechanisms, 20. fluid-blocking supply tubes.
Embodiment
Embodiment
As shown in Figure 1, the present invention includes the pump housing (1) and impeller (2); The motor (11) of Under Water Pumps top for power is provided connects motor (11) and impeller (2) and transmits moment of torsion by pump shaft (8), and pump shaft (8) fixes support by bearing (12,14); Sealing grease chamber (4) is set below axocoel (6), and the purpose that reduces bearing temperature and strengthen sealing effect is being undertaken by sealing grease chamber (4); In below, sealing grease chamber (4), buffer cell (3) is set strengthens sealing effect; Double mechanical seal (5) device is being undertaken the seal action between sealing grease chamber (4) and bearing (14) and buffer cell (3) and sealing grease chamber (4) in the contacting point of sealing grease chamber (4) with pump shaft (8); Have sealing cover (15) to link to each other between buffer cell (3) and the sealing grease chamber (4), sealing cover (15) is the spacer body of sealing grease chamber (4) and buffer cell (3), also is the supporting mass of double mechanical seal (5); Pressure transducer (16) is set in buffer cell (3), after the pressure in the buffer cell (3) is reduced to a certain degree, pressure transducer (16) is opened fluid-blocking feeding mechanism (9) after by signal cable (13) alarm signal being spread out of automatically, buffer cell (3) is injected the fluid that is higher than the interior fluid pressure of the pump housing (1) by fluid-blocking feeding mechanism (9) by fluid-blocking supply tube (18), make pressure in the buffer cell greater than the pressure in the pump housing, under the effect of pressure reduction, limit the pump housing (1) and locate leaking in the buffer cell of liquid, add one-way cock (10) at fluid-blocking supply tube (7) inlet and prevent overflowing of pressure flow body.Fig. 2 is that sequence number is the detail drawing of 9 fluid-blocking feeding mechanism among Fig. 1.
More than, for the present invention be with Under Water Pumps to specifying that embodiment was done, but the present invention is not limited to the foregoing description, comprises that also the present invention conceives other embodiment or the variation in the scope.For example the fluid-blocking feeding mechanism can be an oil pump, also can be air compressor; The fluid-blocking feeding mechanism not only can pressurize to buffer cell, also can carry out supercharging to other chambers; The position of offering of fluid-blocking supply tube also is not limited to upper end at the pump housing, can also be placed on the possibility of the side and the bottom of Under Water Pumps according to its service condition.
The present invention uses through family on probation, has good effect, is subjected to the welcome at family on probation.
Claims (2)
1. Under Water Pumps that has fluid-blocking seal, it comprises the pump housing (1), impeller (2), buffer cell (3), sealing grease chamber (4), the mechanical seal (5) of Double End machinery, pump shaft (8), fluid-blocking feeding mechanism (9) motor (11), bearing (12,14), fluid-blocking supply tube (12), sealing cover (15), pressure transducer (16).It is characterized in that: fluid-blocking supply tube (12) is set in described buffer cell (3), fluid-blocking feeding mechanism (9) injects the fluid be higher than the interior fluid pressure of the pump housing (1) by fluid-blocking supply tube (12) to buffer cell (3), stops leak of liquid in the pump housing (1) under the effect of pressure reduction in buffer cell (3).
2. a kind of Under Water Pumps that has fluid-blocking seal as claimed in claim 1 is characterized in that, pressure transducer (16) is set in buffer cell (3) monitors pressure in the buffer cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810235505A CN101871468A (en) | 2008-11-28 | 2008-11-28 | Submerged pump with fluid-blocking seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810235505A CN101871468A (en) | 2008-11-28 | 2008-11-28 | Submerged pump with fluid-blocking seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101871468A true CN101871468A (en) | 2010-10-27 |
Family
ID=42996516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810235505A Pending CN101871468A (en) | 2008-11-28 | 2008-11-28 | Submerged pump with fluid-blocking seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101871468A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852821A (en) * | 2011-06-27 | 2013-01-02 | 王喜冬 | Hard alloy amphibious sand pump capable of being idled and connected in series |
| CN106930956A (en) * | 2017-03-24 | 2017-07-07 | 天津甘泉集团有限公司 | A kind of full through-flow submersible pump with automatic-sealed control system |
| WO2018122596A1 (en) * | 2016-12-28 | 2018-07-05 | Zolotukhin Mikhail Aleksandrovich | Vertical suspended centrifugal pump |
| RU2736677C1 (en) * | 2019-09-06 | 2020-11-19 | Александр Николаевич Золотухин | Centrifugal vertical pump |
| CN113357159A (en) * | 2021-07-05 | 2021-09-07 | 陈荣国 | Self-suction type composite shield pump based on direct-current permanent magnet motor |
| RU2783051C1 (en) * | 2021-07-05 | 2022-11-08 | Александр Николаевич Золотухин | Semi-submersible centrifugal pump with sealed shaft line on bearings (variants) |
-
2008
- 2008-11-28 CN CN200810235505A patent/CN101871468A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852821A (en) * | 2011-06-27 | 2013-01-02 | 王喜冬 | Hard alloy amphibious sand pump capable of being idled and connected in series |
| CN102852821B (en) * | 2011-06-27 | 2016-02-24 | 王喜冬 | Cemented carbide idle running can be connected amphibious husky pump |
| WO2018122596A1 (en) * | 2016-12-28 | 2018-07-05 | Zolotukhin Mikhail Aleksandrovich | Vertical suspended centrifugal pump |
| CN106930956A (en) * | 2017-03-24 | 2017-07-07 | 天津甘泉集团有限公司 | A kind of full through-flow submersible pump with automatic-sealed control system |
| RU2736677C1 (en) * | 2019-09-06 | 2020-11-19 | Александр Николаевич Золотухин | Centrifugal vertical pump |
| CN113357159A (en) * | 2021-07-05 | 2021-09-07 | 陈荣国 | Self-suction type composite shield pump based on direct-current permanent magnet motor |
| RU2783051C1 (en) * | 2021-07-05 | 2022-11-08 | Александр Николаевич Золотухин | Semi-submersible centrifugal pump with sealed shaft line on bearings (variants) |
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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 |
Open date: 20101027 |