CN202768467U - Fastening and anti-loosening structure for centrifugal pump impeller - Google Patents
Fastening and anti-loosening structure for centrifugal pump impeller Download PDFInfo
- Publication number
- CN202768467U CN202768467U CN 201220244908 CN201220244908U CN202768467U CN 202768467 U CN202768467 U CN 202768467U CN 201220244908 CN201220244908 CN 201220244908 CN 201220244908 U CN201220244908 U CN 201220244908U CN 202768467 U CN202768467 U CN 202768467U
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- impeller
- fastening
- pump shaft
- nut
- loosening
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Abstract
The utility model belongs to the technical field of hydraulic machinery and particularly relates to a fastening and anti-loosening structure for a centrifugal pump impeller. The fastening and anti-loosening structure comprises a pump shaft and an impeller, and is characterized in that the pump shaft with a section of external threads is sleeved with the impeller; the impeller is screwed on the pump shaft through an impeller nut matched with the external threads of the pump shaft; the impeller nut and the impeller are fastened by a plurality of fastening screws; an impeller locknut matched with an impeller inlet channel is screwed on the end face of the impeller nut by the external threads of the pump shaft; and the impeller locknut is fixed by a set screw. According to the structure, as the impeller and the impeller nut are connected into a whole, loosening of the impeller nut caused by vibration is avoided; as the impeller locknut is matched with the impeller inlet channel, the damage of the impeller inlet channel caused by fastening the impeller and influence on the efficiency are avoided; therefore, the effects of whole fastening, loosening prevention and channel filling are achieved.
Description
Technical field
The utility model belongs to the hydraulic machinery technical field, and what be specifically related to is the fastening and anti-loose structure of a kind of centrifugal pump impeller.
Background technique
Along with Chinese Urbanization and industrialized fast development, water pump miscellaneous is widely used, and wherein centrifugal pump (no matter being horizontal, vertical or submersible type) has accounted for very large ratio, and its demand and use amount are also increasing year by year.Centrifugal pump is the same with other machinery all can to break down, and some fault is inevitably, is to reduce by technical finesse the probability of its generation but some faults are arranged.In these faults that " can reduce the probability of its generation ", to count coming off of pump impeller comparatively common.The shut-down, the stopping production event that cause owing to coming off of pump impeller have had a strong impact on daily industrial production.Tracing it to its cause is (when the imbalance of impeller and operation off-design operating point etc.) because the inevitable vibration of water pump in using, and causes impeller nut loosening of fastening impeller, and time one is long finally to cause coming off of impeller.In addition, owing to impeller need to be fastened on the pump shaft with fastening pieces such as nut, screws, this will cut the impeller inlet runner, makes the part fail runner streamline transition according to Impeller Design, causes the efficient dead wight loss.
Summary of the invention
The purpose of this utility model is to propose the fastening and anti-loose structure of a kind of centrifugal pump impeller, is intended to address the above problem.
Main technical schemes of the present utility model is: the fastening and anti-loose structure of centrifugal pump impeller, comprise pump shaft and impeller, and it is characterized in that impeller set on one section externally threaded pump shaft, is tightened on the pump shaft by the impeller nut that matches with the pump shaft outside thread; Some fastening screw trip bolts are fastening with impeller nut and impeller; The end face of impeller nut is screwed with an impeller lock jack panel that cooperates the impeller inlet runner by the pump shaft outside thread, and the impeller lock jack panel is fixed by Cock screw.
Usually, be provided with corresponding through hole and tapped hole on impeller nut of the present utility model and the impeller; Have tapped hole on the impeller lock jack panel.
The utility model is that impeller is inserted in on one section externally threaded pump shaft, and the impeller nut that will match with this pump shaft outside thread is screwed on the axle and compresses impeller, with some fastening screw trip bolts impeller nut and impeller is tightened together again.Again on the outside thread of pump shaft, impeller nut screws on behind one and cooperates the impeller lock jack panel of impeller inlet runner, be screwed in the tapped hole that has on the impeller lock jack panel with Cock screw, and withstand on the impeller nut end face.
Structure of the present utility model has been avoided because vibration causes the loosening of impeller nut because impeller and impeller nut are linked to be an integral body.And the impeller lock jack panel is to cooperate the impeller inlet runner design, makes the inlet channel of not destroying impeller because of fastening impeller, affects efficient.Just reached thus the effect of whole fastening, the locking and runner of filling a vacancy.
Description of drawings
Accompanying drawing 1 is the utility model embodiment's cross-sectional view
In the accompanying drawing, 1-impeller lock jack panel; The 2-fastening screw trip bolt; The 3-spring washer; The 4-pump shaft; The 5-impeller; The 6-impeller nut; The 7-Cock screw.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described in detail.
Embodiment
The utility model embodiment's structure as shown in Figure 1, be used for the fastening and locking structure of centrifugal pump impeller, it mainly comprises pump shaft 4 and impeller 5, is characterized in that impeller 5 is enclosed within on one section externally threaded pump shaft 4, is fastened on impeller 5 on the pump shaft 4 by impeller nut 6 and impeller lock jack panel 1.On described impeller nut 6 and the impeller 5 respectively with through hole and the tapped hole that can link together by fastening screw trip bolt 2 and spring washer 3.With the tapped hole that can be screwed into Cock screw 7, and impeller lock jack panel 1 external shape is streamlined and impeller channel and is complementary on the described impeller lock jack panel 1.
The present embodiment is inserted in impeller 5 in the pump shaft 4 in use, is screwed into impeller nut 6 on the pump shaft 4 and compresses impeller 5, with some fastening screw trip bolts 2 and spring washer 3 impeller nut 6 and impeller 5 is tightened together again.Again on pump shaft 4, the impeller nut 6 impeller lock jack panel 1 of screwing on behind, be screwed in the screw thread that has on the impeller lock jack panel 1 with Cock screw 7, and until withstand on the end face of impeller nut 6.
Claims (3)
1. the fastening and anti-loose structure of a centrifugal pump impeller comprises pump shaft and impeller, it is characterized in that impeller set on one section externally threaded pump shaft, is tightened on the pump shaft by the impeller nut that matches with the pump shaft outside thread; Some fastening screw trip bolts are fastening with impeller nut and impeller; The end face of impeller nut is screwed with an impeller lock jack panel that cooperates the impeller inlet runner by the pump shaft outside thread, and the impeller lock jack panel is fixed by Cock screw.
2. structure as claimed in claim 1 is characterized in that being provided with corresponding through hole and tapped hole on impeller nut and the impeller.
3. structure as claimed in claim 1 is characterized in that having tapped hole on the impeller lock jack panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220244908 CN202768467U (en) | 2012-05-29 | 2012-05-29 | Fastening and anti-loosening structure for centrifugal pump impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220244908 CN202768467U (en) | 2012-05-29 | 2012-05-29 | Fastening and anti-loosening structure for centrifugal pump impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202768467U true CN202768467U (en) | 2013-03-06 |
Family
ID=47775047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220244908 Expired - Lifetime CN202768467U (en) | 2012-05-29 | 2012-05-29 | Fastening and anti-loosening structure for centrifugal pump impeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202768467U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246594A (en) * | 2016-08-30 | 2016-12-21 | 襄阳五二五泵业有限公司 | A kind of impeller locking structure of slurry circulating pump |
| CN106762805A (en) * | 2016-11-15 | 2017-05-31 | 江苏芬奇工业设备制造有限公司 | A kind of high pressure chemical industry centrifugal pump impeller locking device |
-
2012
- 2012-05-29 CN CN 201220244908 patent/CN202768467U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246594A (en) * | 2016-08-30 | 2016-12-21 | 襄阳五二五泵业有限公司 | A kind of impeller locking structure of slurry circulating pump |
| CN106762805A (en) * | 2016-11-15 | 2017-05-31 | 江苏芬奇工业设备制造有限公司 | A kind of high pressure chemical industry centrifugal pump impeller locking device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: LANSHEN GROUP CO., LTD. Free format text: FORMER NAME: NANJING LANSHEN PUMP (GROUP) CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 211500 Nanjing Province, Liuhe District, East Road, No. Patentee after: Lanshen Group Co., Ltd. Address before: 211500 Nanjing Province, Liuhe District, East Road, No. Patentee before: Nanjing Lanshen Pump (Group) Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130306 |