CN201593522U - Connection structure of pump shaft and impeller on sewage pump - Google Patents
Connection structure of pump shaft and impeller on sewage pump Download PDFInfo
- Publication number
- CN201593522U CN201593522U CN2009202414472U CN200920241447U CN201593522U CN 201593522 U CN201593522 U CN 201593522U CN 2009202414472 U CN2009202414472 U CN 2009202414472U CN 200920241447 U CN200920241447 U CN 200920241447U CN 201593522 U CN201593522 U CN 201593522U
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- CN
- China
- Prior art keywords
- pump shaft
- impeller
- hole
- lining
- wheel hub
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- 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 - Lifetime
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Abstract
The utility model discloses a connection structure of a pump shaft and an impeller on a sewage pump. The connection structure comprises a pump shaft, an impeller mounted at the lower end part of the pump shaft. A counter bore is formed on the upper surface of a hub of the impeller; a bush is arranged in the counter bore; a conical hole is formed in the center of the bush, and the aperture of the conical hole is big at the upper part and small at the lower part; the lower end part of the pump shaft is conical and is matched with the conical hole; the lower end part of the pump shaft is inserted in the conical hole; a threaded hole is formed on the lower end surface of the pump shaft; through holes are formed at the bottom parts of the bush and the hub; the threaded hole is in fit connection with a bolt; and the bolt penetrates through the hub and the through hole at the bottom part of the bush from bottom to top, is screwed into the threaded hole and fixedly connected with the hub and the pump shaft. Because a conical end part and the threaded hole are only required to be processed on the pump shaft, and the bush with the conical hole is positioned in the hub of the impeller, the pump shaft and the impeller can be locked by bolts through conical connection after the through holes are formed at the bottom parts of the hub and the bush, so that the processing is convenient and the manufacture cost is low.
Description
Technical field
The utility model relates to the linkage structure of pump shaft and impeller on a kind of sewage pump.
Background technique
In the prior art, adopt key to be connected on the sewage pump between pump shaft and the impeller, on pump shaft, process keyway, have jack on the wheel hub of impeller, also process keyway on the hole wall of jack, key is embedded in the keyway of pump shaft, again the keyway on the jack hole wall is aimed at the key on the pump shaft, be set on the pump shaft, this has just constituted the key connection, comes transmitting movement and power by key between pump shaft and the impeller.Adopt key to connect and must on the hole wall of pump shaft and impeller jack, all process keyway, the processing trouble, the cost of production when causing pump shaft to be connected with impeller is higher, and manufacturing efficiency is relative also lower.
Summary of the invention
The purpose of this utility model provides and adopts screw to be connected the linkage structure of pump shaft and impeller with cone match on a kind of sewage pump.
For achieving the above object, the technical solution adopted in the utility model is: the linkage structure of pump shaft and impeller on a kind of sewage pump, comprise pump shaft, be installed in the impeller of described pump shaft terminal part, offer counterbore on the upper surface of the wheel hub of described impeller, described counterbore is built-in with lining, the center of described lining has cone shape hole, the aperture of described cone shape hole is up big and down small, the underpart of described pump shaft is also tapered, and match with described cone shape hole, the underpart of described pump shaft is seated in the described cone shape hole, offers tapped hole on the lower end surface of described pump shaft, the bottom of described lining, the bottom of described wheel hub all offers perforation, be connected with screw in the described tapped hole, described screw passes the perforation of described wheel hub and sleeve from bottom to top, and screws in the described tapped hole, and described screw connects described wheel hub and described pump shaft.
Described lining comprises the cover end, a circle conical inboard wall that extends upward at the bottom of the described cover, a described circle tapered wall is around forming described cone shape hole, offer described perforation at the bottom of the cover of described lining, described screw passes the perforation at the bottom of described wheel hub and the described cover, after screwing in the described tapped hole, the head of described screw is pressed on the lower surface of described wheel hub by packing ring.
Counterbore on the described impeller hub is the prismatic hole, and the profile of described lining also is a prismatic, the setting that matches with described counterbore of described lining.
Described prismatic is five prismatics or six prismatics.
Because the utility model has adopted above technological scheme, its advantage is as follows: owing to only need process tapered end and tapped hole on pump shaft, and the lining of in the wheel hub of impeller, placing the band cone shape hole, and after wheel hub and sleeve are offered perforation, just can connect and lock pump shaft and impeller with screw by awl, easy to process like this, manufacturing cost is low.
Description of drawings
Accompanying drawing 1 is the sectional view of sewage pump;
Accompanying drawing 2 is the enlarged view at A place in the accompanying drawing 1, shown the linkage structure of pump shaft and impeller in the utility model.
Embodiment
Further set forth the utility model below in conjunction with accompanying drawing.
In Fig. 1, a kind of sewage pump, comprise the pump housing 1, pump shaft 2 and impeller 3, pump shaft 2 is installed in the pump housing 1 by metal (upper seat 4 and metal (upper 5, and impeller 3 is equipped with in the underpart of pump shaft 2, give impeller 3 by pump shaft 2 with the transmission of torque of the pump housing 1 rotor, impeller 3 is done quick rotation, and by the interaction of impeller blade and liquid, impeller 3 passes to liquid with mechanical energy, change into the kinetic energy and the pressure energy of liquid, thereby realize that liquid is inhaled into discharge again in the pump housing 1.
In Fig. 2, offer counterbore 6 on the upper surface of the wheel hub of impeller 3, counterbore 6 is built-in with lining 7, and counterbore 6 is the prismatic hole, and the profile of lining 7 also is a prismatic, and prismatic can be five prismatics or six prismatics, lining 7 setting that matches with counterbore 6.The center of lining 7 has cone shape hole 8, the aperture of cone shape hole is up big and down small, the underpart of pump shaft 2 is also tapered, and match with cone shape hole 8, the underpart of pump shaft 2 is seated in the cone shape hole 8, and the tapered slope of pump shaft 2 underparts compresses mutually with the wall surface of the hole of cone shape hole 8, offers tapped hole 11 on the lower end surface of pump shaft 2, be connected with screw 10 in the tapped hole, the bottom of lining 7, the bottom of wheel hub all offer screw perforation 9.In Fig. 2, lining 7 comprises the cover end 71, a circle tapered wall 72 that extends upward from the cover end 71, one circle tapered wall 72 is around forming cone shape hole 8, screw perforation 9 is opened in cover at the end, screw 10 passes wheel hub and the perforation 9 of cover at the end from bottom to top, and screw in the tapped hole 11, screw 10 fixedly connected described wheel hub and described pump shafts, the head of screw 10 is pressed on the lower surface of wheel hub by packing ring 12.Owing to only need on pump shaft 2, to process tapered end and tapped hole, and the lining of in the wheel hub of impeller 3, placing the band cone shape hole, and offer perforation in the bottom of wheel hub and lining, just can realize by screw 10 locking pump shaft 2 and impellers 3, then process and install all very convenient, accordingly, cost of production was low when pump shaft 2 was connected with impeller 3, and manufacturing efficiency is improved; Cone match can be unclamped under the situation that water pump seriously overloads suddenly or impeller blocks, and makes the motor off-load, avoids burning motor or electrical equipment.
Claims (4)
1. the linkage structure of pump shaft and impeller on the sewage pump, comprise pump shaft, be installed in the impeller of described pump shaft terminal part, it is characterized in that: offer counterbore on the upper surface of the wheel hub of described impeller, described counterbore is built-in with lining, the center of described lining has cone shape hole, the aperture of described cone shape hole is up big and down small, the underpart of described pump shaft is also tapered, and match with described cone shape hole, the underpart of described pump shaft is seated in the described cone shape hole, offer tapped hole on the lower end surface of described pump shaft, the bottom of described lining, the bottom of described wheel hub all offers perforation, is connected with screw in the described tapped hole, and described screw passes the perforation of described wheel hub and sleeve from bottom to top, and screw in the described tapped hole, described screw connects described wheel hub and described pump shaft.
2. the linkage structure of pump shaft and impeller on the sewage pump according to claim 1, it is characterized in that: described lining comprises the cover end, a circle conical inboard wall that extends upward at the bottom of the described cover, a described circle tapered wall is around forming described cone shape hole, offer described perforation at the bottom of the cover of described lining, described screw passes the perforation at the bottom of described wheel hub and the described cover, after screwing in the described tapped hole, the head of described screw is pressed on the lower surface of described wheel hub by packing ring.
3. the linkage structure of pump shaft and impeller on the sewage pump according to claim 1 is characterized in that: the counterbore on the described impeller hub is the prismatic hole, and the profile of described lining also is a prismatic, the setting that matches with described counterbore of described lining.
4. the linkage structure of pump shaft and impeller on the sewage pump according to claim 3 is characterized in that: described prismatic is five prismatics or six prismatics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202414472U CN201593522U (en) | 2009-11-18 | 2009-11-18 | Connection structure of pump shaft and impeller on sewage pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202414472U CN201593522U (en) | 2009-11-18 | 2009-11-18 | Connection structure of pump shaft and impeller on sewage pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201593522U true CN201593522U (en) | 2010-09-29 |
Family
ID=42775588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202414472U Expired - Lifetime CN201593522U (en) | 2009-11-18 | 2009-11-18 | Connection structure of pump shaft and impeller on sewage pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201593522U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020125198A1 (en) * | 2018-12-17 | 2020-06-25 | 珠海格力电器股份有限公司 | Impeller component and compressor having same |
-
2009
- 2009-11-18 CN CN2009202414472U patent/CN201593522U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020125198A1 (en) * | 2018-12-17 | 2020-06-25 | 珠海格力电器股份有限公司 | Impeller component and compressor having same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100929 |
|
| CX01 | Expiry of patent term |