CN201133370Y - Built-in circulating sealed flushing structure for balanced suction pump - Google Patents
Built-in circulating sealed flushing structure for balanced suction pump Download PDFInfo
- Publication number
- CN201133370Y CN201133370Y CNU2007201990860U CN200720199086U CN201133370Y CN 201133370 Y CN201133370 Y CN 201133370Y CN U2007201990860 U CNU2007201990860 U CN U2007201990860U CN 200720199086 U CN200720199086 U CN 200720199086U CN 201133370 Y CN201133370 Y CN 201133370Y
- Authority
- CN
- China
- Prior art keywords
- pump
- flow passage
- pump cover
- sealed member
- inner flow
- 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 - Fee Related
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a built-in circulation seal flushing structure for a double suction pump, which is composed of a pump shaft, an impeller, a pump cover and a sealing member, wherein, an internal flow passage is arranged in the pump cover and the sealing shelf of the sealing member respectively; the internal flow passage of the pump cover is communicated with a chamber between the impeller and the pump cover; the central axial line of the internal flow passage in the sealing shelf of the sealing member is perpendicular to the central axial line of the pump shaft; a screw hole is arranged on the side wall of the pump cover, and the central axial line of the screw hole is on the extension line of the central axial line of the internal flow passage in the sealing shelf of the sealing member; the screw hole is provided with an adjusting screw, and the inner end of the adjusting screw is arranged in a cavity between the pump cover and the sealing member and is provided with a cone-shaped throttling block. As the cone-shaped throttling block can adjust the return flow rate, the return flow in the internal flow passage can not generate force along the axial direction of the pump shaft and not influence the performance of the sealing, so the pump is applicable to each kind of range. The flushing effect of the utility model is good, and the service life of the sealing member and the shaft sleeve is prolonged.
Description
Technical field:
The utility model relates to mechanical field, relates in particular to pump, and structure is sealflushed in particularly a kind of built-in circulation that is used for double suction pump.
Background technique:
In the prior art, be provided with the flush cycle water route in the single-stage double-suction centrifugal pump, in order to the sealed member of flushing, lubricated, coolant pump.The flush cycle water route is to be communicated with inner flow passage in the seal rack by the inner flow passage in the pump cover to realize, and has angle between inner flow passage in the seal rack and the pump shaft, and the liquid stream in the inner flow passage produces opposition to seal arrangement.But when pump is in the operation of big flow lift operating mode, excessive return pressure requires to compress follower, and follower can make axle sleeve wearing and tearing aggravation, too small pressure be difficult to again realize sealing to the excessive power of holding tightly of axle sleeve and cause excessive seepage, has influence on the efficient and the operational reliability of pump.
Summary of the invention:
The purpose of this utility model provides a kind of built-in circulation that is used for double suction pump and sealflushes structure, and flushing mechanism that structure will the solve the prior art double suction pump unfavorable technical problem of working is sealflushed in the described this built-in circulation that is used for double suction pump when big flow lift operating mode.
This built-in circulation that is used for double suction pump of the present utility model is sealflushed structure by pump shaft, impeller, pump cover and sealed member constitute, described impeller is arranged on the described pump shaft, described sealed member is arranged between described pump cover and the pump shaft, be provided with inner flow passage in the seal rack of pump cover and sealed member, inner flow passage in pump cover and the sealed member seal rack is communicated with, the inner flow passage of pump cover and impeller are communicated with chamber between the pump cover, wherein, the central axis of the inner flow passage in the sealed member seal rack is perpendicular to the central axis of pump shaft, be provided with a screw in the sidewall of described pump cover, the central axis of described screw is arranged on the elongation line of central axis of sealed member seal rack inner flow passage, be provided with an adjusting screw rod in the screw, in the cavity of the inner of described adjusting screw rod between pump cover and sealed member, it is stifled that the inner of adjusting screw rod is provided with the tapered joint flow cone, and described tapered joint flow cone is stifled to match with the inlet of inner flow passage in the sealed member seal rack.
Further, be provided with sealing gasket and O RunddichtringO between described pump cover and the adjusting screw rod.
Working principle of the present utility model is: because inner flow passage and pump shaft in the seal rack are perpendicular, so backflow does not wherein produce horizontal active force, so pump work needn't be regulated the impacting force of seal rack when big flow; Can regulate the gap between the inner flow passage inlet in taper throttling cone blocking and the seal rack by adjusting screw rod, thereby capacity of reflux is carried out throttling control.
The utility model and prior art contrast, and its effect is actively with tangible.The utility model changes the inner flow passage in the seal rack perpendicular to the pump shaft axis into, backflow in the inner flow passage can not produce along the axial active force of pump shaft, do not influence the sealability of seal arrangement, set up in pump cover simultaneously that the tapered joint flow cone is stifled to be regulated return flow, make pump structure more perfect, be suitable for various performance ranges, improve the pump operation reliability; To the flushing of sealed member, lubricated, good cooling results, and prolonged working life of sealed member and axle sleeve, safeguarded simple.
Description of drawings:
Fig. 1 is the structural representation that structure is sealflushed in the built-in circulation that is used for double suction pump of the present utility model.
Embodiment:
As shown in Figure 1, the built-in circulation that is used for double suction pump of the present utility model is sealflushed structure by pump shaft 1, impeller 2, pump cover 3 and sealed member 9 constitute, described impeller 2 is arranged on the described pump shaft 1, described sealed member 9 is arranged between described pump cover 3 and the pump shaft 1, be provided with inner flow passage 5 in the pump cover 3, be provided with inner flow passage 6 in the seal rack of sealed member 9, inner flow passage 6 in pump cover 3 and sealed member 9 seal racks is communicated with, the inner flow passage 6 of pump cover 3 and impeller 2 are communicated with chamber between the pump cover 3, wherein, the central axis of the inner flow passage 6 in sealed member 9 seal racks is perpendicular to the central axis of pump shaft 1, be provided with a screw in the sidewall of described pump cover 3, the central axis of described screw is arranged on the elongation line of central axis of sealed member 9 seal rack inner flow passages 6, be provided with an adjusting screw rod 7 in the screw, in the cavity of the inner of described adjusting screw rod 7 between pump cover 3 and sealed member 9, it is stifled 8 that the inner of adjusting screw rod 7 is provided with the tapered joint flow cone, and described tapered joint flow cone stifled 8 matches with the inlet of inner flow passage 6 in sealed member 9 seal racks.
Further, be provided with sealing gasket (not shown) and O RunddichtringO (not shown) between described pump cover 3 and the adjusting screw rod 7.
Working principle of the present utility model is: because the inner flow passage 6 in the seal rack is perpendicular with pump shaft 1, so backflow does not wherein produce horizontal active force, so pump work needn't be regulated the impacting force of seal rack when big flow; Can regulate the gap between inner flow passage 6 inlets in taper throttling cone blocking 8 and the seal rack by adjusting screw rod 7, thereby capacity of reflux is carried out throttling control.
Claims (2)
1. structure is sealflushed in a built-in circulation that is used for double suction pump, by pump shaft, impeller, pump cover and sealed member constitute, described impeller is arranged on the described pump shaft, described sealed member is arranged between described pump cover and the pump shaft, be provided with inner flow passage in the seal rack of pump cover and sealed member, inner flow passage in pump cover and the sealed member seal rack is communicated with, the inner flow passage of pump cover and impeller are communicated with chamber between the pump cover, it is characterized in that: the central axis of the inner flow passage in the sealed member seal rack is perpendicular to the central axis of pump shaft, be provided with a screw in the sidewall of described pump cover, the central axis of described screw is arranged on the elongation line of central axis of sealed member seal rack inner flow passage, be provided with an adjusting screw rod in the screw, in the cavity of the inner of described adjusting screw rod between pump cover and sealed member, it is stifled that the inner of adjusting screw rod is provided with the tapered joint flow cone, and described tapered joint flow cone is stifled to match with the inlet of inner flow passage in the sealed member seal rack.
2. structure is sealflushed in the built-in circulation that is used for double suction pump as claimed in claim 1, it is characterized in that: be provided with sealing gasket and O RunddichtringO between described pump cover and the adjusting screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201990860U CN201133370Y (en) | 2007-12-11 | 2007-12-11 | Built-in circulating sealed flushing structure for balanced suction pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201990860U CN201133370Y (en) | 2007-12-11 | 2007-12-11 | Built-in circulating sealed flushing structure for balanced suction pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201133370Y true CN201133370Y (en) | 2008-10-15 |
Family
ID=40061643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201990860U Expired - Fee Related CN201133370Y (en) | 2007-12-11 | 2007-12-11 | Built-in circulating sealed flushing structure for balanced suction pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201133370Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806311A (en) * | 2009-02-18 | 2010-08-18 | 株式会社久保田 | Pump and using method thereof |
| CN109812421A (en) * | 2017-11-20 | 2019-05-28 | 苏尔寿管理有限公司 | Pump for fluid |
-
2007
- 2007-12-11 CN CNU2007201990860U patent/CN201133370Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806311A (en) * | 2009-02-18 | 2010-08-18 | 株式会社久保田 | Pump and using method thereof |
| CN101806311B (en) * | 2009-02-18 | 2014-11-05 | 株式会社久保田 | Pump and using method thereof |
| CN109812421A (en) * | 2017-11-20 | 2019-05-28 | 苏尔寿管理有限公司 | Pump for fluid |
| CN109812421B (en) * | 2017-11-20 | 2021-12-21 | 苏尔寿管理有限公司 | Pump for fluids |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203948264U (en) | A kind of membrane pump with pneumatic drive | |
| CN204476777U (en) | Multi-impeller Centrifugal electro-pump | |
| CN103925200A (en) | Pneumatic diaphragm pump | |
| CN201133370Y (en) | Built-in circulating sealed flushing structure for balanced suction pump | |
| CN201439838U (en) | Mesh cohesive-type control valve | |
| CN203867830U (en) | Novel closed cycle vacuum unit | |
| CN204344448U (en) | Combination brake switch and proporting exhausting type high pressure split water injection pump | |
| CN204082617U (en) | A kind of throttling arrangement for centrifugal pump cavity | |
| CN203548173U (en) | Oil replenishing and flushing device of hydraulic variable displacement piston pump | |
| CN207122426U (en) | Helical-lobe compressor exhaust structure and helical-lobe compressor | |
| CN204025062U (en) | Self balancing energy-saving multi-stage centrifugal pump | |
| CN203978905U (en) | Double-shell pump pump barrel body hydrostatics testing sealing configuration | |
| CN201896761U (en) | Submersible pump with double outlets | |
| CN206545579U (en) | A kind of pair of relief valve constant flow pump | |
| MY147826A (en) | Miniflow valve | |
| CN202158019U (en) | Balance hole and small balance drum structure | |
| CN204572472U (en) | A kind of rotational flow self-priming pump | |
| CN209145954U (en) | Sulfuric acid pump seal ring structure under a kind of liquid | |
| CN212717375U (en) | Novel volute for agricultural machinery | |
| CN208169109U (en) | A kind of novel fluid cell structure | |
| CN103967844A (en) | Upper ring structure with cylinder and arranged on mining vertical submersible pump with exterior single-stage impeller | |
| CN219605575U (en) | First-stage double-suction self-balancing multistage pump with bearing cooling structure | |
| CN204755406U (en) | Novel high temperature cooling for pump device | |
| CN204041522U (en) | Comprehensive sealing system | |
| CN220415611U (en) | Water pump with double pump bodies |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081015 Termination date: 20121211 |