CN2234518Y - Inversion preventing mechanism for centrifugal mud pump - Google Patents
Inversion preventing mechanism for centrifugal mud pump Download PDFInfo
- Publication number
- CN2234518Y CN2234518Y CN 94239497 CN94239497U CN2234518Y CN 2234518 Y CN2234518 Y CN 2234518Y CN 94239497 CN94239497 CN 94239497 CN 94239497 U CN94239497 U CN 94239497U CN 2234518 Y CN2234518 Y CN 2234518Y
- Authority
- CN
- China
- Prior art keywords
- main shaft
- impeller
- axle sleeve
- mud pump
- preventing mechanism
- 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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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model belongs to a mechanism which can be used for preventing a pump and a main shaft from generating inversion, comprising an impeller connecting with the end part of the main shaft and a shaft sleeve and a nut on the outside of the main shaft; the connection end of the impeller and the main shaft is provided with a radial groove, and the end part of the shaft sleeve is provided with a boss which is matched with the groove.
Description
The utility model relates to centrifugal pump, specifically a kind of mechanism that prevents that pump and axle from reversal phenomenon taking place.
The impeller of slurry pump in the past and main shaft are used scyewed joint usually, and axle sleeve is arranged outside main shaft, during installation, earlier impeller are connected on the main shaft, and the nut of the rotary main shaft the other end is pressed on the impeller axle sleeve, with fastening impeller again.Because the end face that is connected at impeller and main shaft is smooth plane, therefore,, when motor reverses, impeller is reversed and minus thread direction whiz main shaft when the power line that motor takes place connects instead, cause pump and other destructurized.
The purpose of this utility model is in order to overcome the problems referred to above, and designs the anti-reverse mechanism that a kind of end face at impeller and axle sleeve is provided with the centrifugal mud pump of concave-convex shape structure.
Its main technical schemes comprises the impeller that is connected spindle nose, and the axle sleeve and the nut of main shaft outside, at the connecting end of impeller and main shaft radial groove is arranged, have in the end of axle sleeve can with the boss of groove fit; Between axle sleeve and main shaft, also utilize flat key or bolt or other coupling to be connected.
The utility model has the advantages that the wedge-shaped structure that cooperatively interacts owing to joint being provided with at impeller and axle sleeve, therefore, even when motor reverses because of the misconnection power line, the situation of impeller minus thread direction whiz main shaft can not take place yet, thereby has eliminated pump and structure so and ruined possibility.
Fig. 1,2 is structural drawing of the present utility model, sectional drawing.
Fig. 3 is another kind of structural drawing.
As shown in the figure: impeller (1) utilization is threaded in the end of main shaft (5), axle sleeve (4) is arranged outside main shaft, an end that is positioned at impeller at axle sleeve has boss (3), corresponding site at impeller has the groove (2) that can match with the boss on the axle sleeve, the other end at main shaft (5) has nut (7), can utilize flat key (6) or bolt (8) to be connected between axle sleeve and main shaft.
During installation, earlier axle sleeve is enclosed within on the main shaft, again impeller is spun on spindle nose, and adjusts the gap between impeller and backplate, screw nut then, the boss on the axle sleeve is embedded in the groove of impeller tightly, with bolt axle sleeve is fastened on the main shaft again.
Claims (2)
1, the anti-reverse mechanism of centrifugal mud pump, comprise the impeller (1) that is connected main shaft (5) end, and the axle sleeve (4) of main shaft (5) outside, with nut (7), it is characterized in that radial groove (2) being arranged, the boss (3) that can cooperate with groove (2) is arranged in the end of axle sleeve (4) at the connecting end of impeller (1) and main shaft (5).
2, mechanism according to claim 1 is characterized in that also utilizing flat key (6) or bolt (8) or other coupling to be connected between axle sleeve (4) and the main shaft (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94239497 CN2234518Y (en) | 1994-10-19 | 1994-10-19 | Inversion preventing mechanism for centrifugal mud pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94239497 CN2234518Y (en) | 1994-10-19 | 1994-10-19 | Inversion preventing mechanism for centrifugal mud pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2234518Y true CN2234518Y (en) | 1996-09-04 |
Family
ID=33846699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94239497 Expired - Fee Related CN2234518Y (en) | 1994-10-19 | 1994-10-19 | Inversion preventing mechanism for centrifugal mud pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2234518Y (en) |
-
1994
- 1994-10-19 CN CN 94239497 patent/CN2234518Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |