CN200946588Y - Screw pump type throttling gap of middle and high pressure pump and solid-containing impurity pump - Google Patents
Screw pump type throttling gap of middle and high pressure pump and solid-containing impurity pump Download PDFInfo
- Publication number
- CN200946588Y CN200946588Y CN 200620045657 CN200620045657U CN200946588Y CN 200946588 Y CN200946588 Y CN 200946588Y CN 200620045657 CN200620045657 CN 200620045657 CN 200620045657 U CN200620045657 U CN 200620045657U CN 200946588 Y CN200946588 Y CN 200946588Y
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- CN
- China
- Prior art keywords
- pump
- solid
- axle sleeve
- screw thread
- media
- 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
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Abstract
The utility model relates to a new screw pump type throttle aperture for middle-high pressure pump and solid impurity pump, comprising a blade wheel, a pump shaft, a shaft sleeve, a pump lid and a mechanical seal, which is characterized in that the pump sleeve part cooperating with the pump lid has inclined threads having rectangular transverse sections and the same screwing direction as the rotating direction of the blade wheel. The utility model had the advantages in that the threads and the pump lid form aperture cooperation, which, in one aspect, has sealing functions to block the media or solid-containing objects passing through, and, in the other aspect, by the screw pump effect generated with the pump lid, produces an effort with the opposite direction of the high-pressure media so that the media can hardly enter the sealed cavity, thereby reducing the pressure.
Description
Technical field
The utility model relates to a kind of at the mesohigh pump and contain on the solid transh pump throttle chink on the pump cover and axle sleeve, and is particularly a kind of at the mesohigh pump and contain novel helical pump formula throttle chink on the solid transh pump.
Background technique
In the design of mesohigh pump is used, in order to reduce the loss of machine envelope, usually to consider to reduce the pressure of machine sealing chamber, because its pressure is mainly from the pump chamber side at impeller place, so pumping throttling part of local design usually that medium leads to machine sealing chamber, purpose is exactly the pressure that reduces the overcurrent of medium and reduce machine sealing chamber.In order to reach this purpose, carry out fine finishing at the position that pump cover matches with axle sleeve usually, between them, stay very little gap, achieve the goal by the throttling action of little gap to medium.Do processing request to the gap like this than higher, simultaneously because axle sleeve surface and pump cover bore area all are smooth surface, the effect of its throttling is poor, the leakage in slit is more serious, especially having under the situation that contains solid impurity, smooth surface does not almost have the barrier effect of impurity, so adopt the effect of this throttle structure bad.
Summary of the invention
The purpose of this utility model is to solve mesohigh pump of the prior art and contain on the solid transh pump existing the problems referred to above of throttle chink on the pump cover and axle sleeve, provides a kind of at the mesohigh pump and contain novel helical pump formula throttle chink on the solid transh pump.The utility model relates to a kind of at the mesohigh pump and contain novel helical pump formula throttle chink on the solid transh pump, comprises impeller, pump shaft, axle sleeve, pump cover, mechanical seal, it is characterized in that: offer screw thread on the axle sleeve of pump cover and axle sleeve matching part.The screw thread of offering on axle sleeve is a twill, and thread cross section is a rectangle, and the rotation direction of the screw thread on the axle sleeve is identical with turning to of impeller.The utility model has the advantages that screw thread and former pump cover form Spielpassung, when medium by the time its can play on the one hand labyrinth seal effect to medium with contain solid material and stop, it and pump cover form the helical pump effect on the other hand, can produce and the rightabout active force of high-pressure medium, make the more difficult machine sealing chamber that enters of medium, thereby reach the purpose of step-down.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model,
Accompanying drawing 2 is the screw thread schematic representation of axle sleeve of the present utility model.
Embodiment
Comprise impeller 1, pump shaft 2, axle sleeve 3, pump cover 4, mechanical seal 5 among the figure, it is characterized in that: on the axle sleeve 3 of pump cover 2 and axle sleeve 3 matching parts, offer screw thread 6.The screw thread of offering on axle sleeve 36 is twill, and the cross section of screw thread 6 is a rectangle, and the rotation direction of the screw thread 6 on the axle sleeve 3 is identical with turning to of impeller 1.
The throttling that the Spielpassung of 3 on common pump cover 4 endoporus and axle sleeve is formed partly is modified into one section screw thread 6 of increase on the axle sleeve 3 of the part that axle sleeve 3 cooperates with pump cover 4, this screw thread 6 forms Spielpassung with pump cover 4, when medium by the time its can play on the one hand labyrinth seal effect to medium with contain solid material and stop, on the other hand it when rotating with pump cover 4 formation helical pump effects, can produce and the rightabout active force of high-pressure medium, make the more difficult machine sealing chamber that enters of medium, thereby reach the purpose of step-down.
Claims (3)
1, a kind of at the mesohigh pump and contain novel helical pump formula throttle chink on the solid transh pump, comprise impeller, pump shaft, axle sleeve, pump cover, mechanical seal, it is characterized in that: on the axle sleeve of pump cover and axle sleeve matching part, offer screw thread.
2, described a kind of at the mesohigh pump and contain novel helical pump formula throttle chink on the solid transh pump by claim 1, it is characterized in that: the screw thread of offering on axle sleeve is a twill, and thread cross section is a rectangle.
3, described a kind of at the mesohigh pump and contain novel helical pump formula throttle chink on the solid transh pump by claim 1, it is characterized in that: the rotation direction of the screw thread on the axle sleeve is identical with turning to of impeller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620045657 CN200946588Y (en) | 2006-09-08 | 2006-09-08 | Screw pump type throttling gap of middle and high pressure pump and solid-containing impurity pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620045657 CN200946588Y (en) | 2006-09-08 | 2006-09-08 | Screw pump type throttling gap of middle and high pressure pump and solid-containing impurity pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200946588Y true CN200946588Y (en) | 2007-09-12 |
Family
ID=38733649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620045657 Expired - Fee Related CN200946588Y (en) | 2006-09-08 | 2006-09-08 | Screw pump type throttling gap of middle and high pressure pump and solid-containing impurity pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200946588Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900846A (en) * | 2012-11-01 | 2013-01-30 | 安徽亚兰密封件有限公司 | Novel sealing device combining Archimedes spiral groove sealing and contact type mechanical sealing |
| CN113217472A (en) * | 2021-06-30 | 2021-08-06 | 高道密封科技(苏州)有限公司 | Machine seal cooling structure, high-temperature hot water circulating pump with same and method |
-
2006
- 2006-09-08 CN CN 200620045657 patent/CN200946588Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900846A (en) * | 2012-11-01 | 2013-01-30 | 安徽亚兰密封件有限公司 | Novel sealing device combining Archimedes spiral groove sealing and contact type mechanical sealing |
| CN113217472A (en) * | 2021-06-30 | 2021-08-06 | 高道密封科技(苏州)有限公司 | Machine seal cooling structure, high-temperature hot water circulating pump with same and method |
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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: 20070912 Termination date: 20100908 |