CN202612116U - Multi-key shaft hole connection centrifugal pump - Google Patents
Multi-key shaft hole connection centrifugal pump Download PDFInfo
- Publication number
- CN202612116U CN202612116U CN 201220236564 CN201220236564U CN202612116U CN 202612116 U CN202612116 U CN 202612116U CN 201220236564 CN201220236564 CN 201220236564 CN 201220236564 U CN201220236564 U CN 201220236564U CN 202612116 U CN202612116 U CN 202612116U
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- shaft
- pump
- pump shaft
- impeller
- axle sleeve
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Abstract
The utility model discloses a multi-key shaft hole connection centrifugal pump, which comprises a pump body, a pump shaft and an impeller, wherein a space which is used for accommodating the pump shaft is formed in the pump body; the pump shaft is rotatably arranged on the pump body; the impeller is sleeved on the pump shaft and arranged in the middle of the pump shaft; shaft sleeves which are used for limiting the impeller to move along the axial direction of the pump shaft are arranged on the pump shaft; at least two shaft key grooves are formed on the pump shaft and distributed along the axial direction of the pump shaft; wheel key grooves which are matched with the shaft key grooves are oppositely formed on the impeller; the shaft key grooves and the wheel key grooves are driven by flat keys, so the impeller and the pump shaft synchronously rotate; and a sealing device is arranged on each shaft sleeve. The impeller is fixed in circumferential direction through the flat keys in at least two key grooves which are formed on the pump shaft, the impeller is fixed in the axial direction by two shaft sleeves which are arranged on the pump shaft, the whole transmission motion and torque are realized, and the sealing device is arranged on each shaft sleeve, so the sealing performance of a water pump is ensured, the technical problem of long stroke of a key groove processing milling cutter is effectively solved, the abrasion of a tool is greatly reduced, and straightness tolerance is ensured.
Description
Technical field
The utility model design pumping unit field specifically is a kind of centrifugal pump of design, refers more particularly to the centrifugal pump that a kind of multikey formula axis hole connects.
Background technique
Existing horizontal middle open type double happiness centrifugal pump rotor parts main structure: with reference to accompanying drawing 1; Accompanying drawing is depicted as and a kind ofly from left to right is installed on the pump shaft successively for round nut 1, round nut locked spacer 2, bearing baffle 3, bearing 4, axle sleeve 5, impeller 11, axle sleeve 5, bearing pressure ring 12, bearing 4, bearing pressure ring 12, shaft block ring 13; Wherein impeller 11 is realized axial restraint through a long key that is arranged in pump shaft 9 keyways, and transmitting movement and torque; Axle sleeve 5 is realized axial restraint through interference fit, and transmitting movement and torque.This structural imperfection is that long keyway milling cutter stroke is long, and tool wear is big, and the straightness accuracy tolerance is difficult to guarantee, and axle sleeve cooperation tension, is unfavorable for dismounting, and maintenance is difficulty relatively.
The model utility content
The centrifugal pump that the purpose of the utility model is to provide that a kind of compact structure is simple, easy to operate, manufacturing efficiency is high, cost is low, long service life, multikey formula axis hole easy to maintenance connect.
For solving the problems of the technologies described above, the centrifugal pump that the utility model provides a kind of multikey formula axis hole to connect comprises the pump housing, pump shaft and impeller; The pump housing is provided with the space that holds pump shaft, and said pump shaft is rotating to be arranged on the pump housing, and said impeller set is located on the said pump shaft and is arranged in the middle of the pump shaft; Also be provided with the restriction impeller on the said pump shaft along the axially movable axle sleeve of pump shaft; Offer at least two shaft spline on the pump shaft, two shaft spline are along the axial setting of pump shaft, the corresponding setting and the adaptive wheel key way of shaft spline on the impeller; Shaft spline and wheel key way drive the synchronous rotation that realizes impeller and pump shaft through flat key, and said axle sleeve is provided with seal arrangement.
The utility model improves to be had; Said seal arrangement comprises teflon gasket and O RunddichtringO; Said teflon gasket be set on the pump shaft and be arranged on axle sleeve and impeller between; The inboard of said axle sleeve is provided with the annular groove along its extending circumferentially, and said O RunddichtringO is arranged in the space of annular groove and pump shaft formation.
The utility model improves to be had, the two ends of said pump shaft all through bearing, bearing baffle, round nut locked spacer, round nut, bearing pressure ring, end ring is rotating is arranged on the pump housing.
The utility model improves to be had, and said shaft spline is along the circumferential equidistance setting of pump shaft.
The beneficial effect of the utility model is: the centrifugal pump that new improved multikey formula axis hole connects; Flat key through being arranged at least two keyways of pump shaft is realized the circumferentially fixing of impeller; Be arranged on the axial restraint of two axle sleeves realization impellers on the pump shaft, whole transmission campaign and torque, and also axle sleeve is provided with seal arrangement; Guaranteed the sealability of water pump; The reduction of its entire effective long technical problem, the tool wear of keyway milling cutter processing stroke reduce greatly, the straight line tolerance is able to guarantee simple in structure, long service life, easy to operate.
Description of drawings
Accompanying drawing 2 is the structural representation of the centrifugal pump that connects of the multikey formula axis hole of the utility model.
Label declaration: 1-round nut; 2-round nut locked spacer; The 3-bearing baffle; The 4-bearing; The 5-axle sleeve; 6-O type rubber ring; 7-flat key 8-teflon gasket; The 9-pump shaft; The 10-pump housing; The 11-impeller; The 12-bearing pressure ring; The 13-end ring.
Embodiment
By the technology contents, the structure characteristics that specify the utility model, realized purpose and effect, know clearly below in conjunction with mode of execution and conjunction with figs. and give explanation.
See also Fig. 2; The centrifugal pump that a kind of multikey formula axis hole that the utility model provides shown in the accompanying drawing connects comprises the pump housing 10, pump shaft 9 and impeller 11, and the pump housing 10 is provided with the space that holds pump shaft 9; Said pump shaft 9 rotating being arranged on the pump housing 10; Said impeller 11 is set on the said pump shaft 9 and is arranged in the middle of the pump shaft 9, also is provided with restriction impeller 11 on the said pump shaft 9 along pump shaft 9 axially movable axle sleeves 5, offers at least two shaft spline on the pump shaft 9; Two shaft spline are along the axial setting of pump shaft 9; Corresponding setting and the adaptive wheel key way of shaft spline on the impeller 11, shaft spline and wheel key way drive the synchronous rotation that realizes impeller 11 and pump shaft 9 through flat key 7, and said axle sleeve 5 is provided with seal arrangement.
Come coupling shaft keyway and wheel key way through flat key 7, make pump shaft 9 when rotating, the impeller 11 that can drive synchronously on the pump shaft 9 rotates; And it is provided with at least two flat keys 7 and replaces a long key originally, and its processing stroke shortens, and has protected the cutter that pump shaft 9 is processed; Also guaranteed the straightness accuracy tolerance of keyway; Again because impeller 11 is arranged on the middle part of pump shaft 9, because the symmetry properties of project organization, acting on the axial force that power and dynamical reaction on the rotary blade cover plate cause is balance; Theoretically, the axial force sum is zero.The axial force that causes rotor shifting so also has, from: the error in a, the water pump structure manufacturing causes; Post gap is different with length causes for the abrasion of b, water pump both sides sealing ring.
Therefore, it axially generally can not find skew, and present embodiment has further increased axle sleeve 5; Axle sleeve 5 to impeller 11 support force is provided, guaranteed that impeller 11 can not produce to move axially, make entire equipment better motion and driving torque; Wherein, Above-mentioned flat key 7 is not necessarily to move necessary, among other embodiments, can adopt round key etc.
See also Fig. 2; Shown in the accompanying drawing in the present embodiment; Said seal arrangement comprises teflon gasket 8 and O type rubber ring 6; Said teflon gasket 8 be set on the pump shaft 9 and be arranged on axle sleeve 5 and impeller 11 between, the inboard of said axle sleeve 5 is provided with the annular groove along its extending circumferentially, said O type rubber ring 6 is arranged in the space that annular groove and pump shaft 9 form.
Adopt teflon gasket 8 to be arranged between axle sleeve 5 and the impeller 11, can prevent axle sleeve 5 cooperation tensions, be unfavorable for the technical problem dismantled making the maintenance of whole centrifugal pump more convenient.On the other hand, the sealability that O type rubber ring 6 also can well guarantee whole centrifugal pump is set, O type rubber ring 6 is a kind of of seal ring certainly, in other embodiments, can adopt other seal ring or sealing means to realize the sealing to centrifugal pump.
See also Fig. 2, in the present embodiment, the two ends of said pump shaft 9 are all through bearing 4, bearing baffle 3, round nut locked spacer 2, round nut 1, bearing pressure ring 12, end ring 13 rotating being arranged on the pump housing 10 shown in the accompanying drawing.
In the present embodiment, said shaft spline is along pump shaft 9 circumferential equidistance settings, and its keyway is symmetrically arranged with respect to the axis of pump shaft 9 usually, has guaranteed the dynamic balancing when pump shaft 9 rotates again.
The above is merely the embodiment of the utility model; Be not thus the restriction the utility model claim; Every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the utility model.
Claims (4)
1. the centrifugal pump that multikey formula axis hole connects is characterized in that, comprises the pump housing, pump shaft and impeller; The pump housing is provided with the space that holds pump shaft, and said pump shaft is rotating to be arranged on the pump housing, and said impeller set is located on the said pump shaft and is arranged in the middle of the pump shaft; Also be provided with the restriction impeller on the said pump shaft along the axially movable axle sleeve of pump shaft; Offer at least two shaft spline on the pump shaft, two shaft spline are along the axial setting of pump shaft, the corresponding setting and the adaptive wheel key way of shaft spline on the impeller; Shaft spline and wheel key way drive the synchronous rotation that realizes impeller and pump shaft through flat key, and said axle sleeve is provided with seal arrangement.
2. the centrifugal pump that multikey formula axis hole according to claim 1 connects; It is characterized in that; Said seal arrangement comprises teflon gasket and O RunddichtringO; Said teflon gasket be set on the pump shaft and be arranged on axle sleeve and impeller between, the inboard of said axle sleeve is provided with the annular groove along its extending circumferentially, said O RunddichtringO is arranged in the space that annular groove and pump shaft form.
3. the centrifugal pump that multikey formula axis hole according to claim 1 connects is characterized in that, the two ends of said pump shaft all through bearing, bearing baffle, round nut locked spacer, round nut, bearing pressure ring, end ring is rotating is arranged on the pump housing.
4. the centrifugal pump that multikey formula axis hole according to claim 1 connects is characterized in that said shaft spline is along the circumferential equidistance setting of pump shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220236564 CN202612116U (en) | 2012-05-24 | 2012-05-24 | Multi-key shaft hole connection centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220236564 CN202612116U (en) | 2012-05-24 | 2012-05-24 | Multi-key shaft hole connection centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202612116U true CN202612116U (en) | 2012-12-19 |
Family
ID=47345821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220236564 Expired - Lifetime CN202612116U (en) | 2012-05-24 | 2012-05-24 | Multi-key shaft hole connection centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202612116U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112780602A (en) * | 2021-02-01 | 2021-05-11 | 上海凯泉泵业（集团）有限公司 | Pump shaft structure |
-
2012
- 2012-05-24 CN CN 201220236564 patent/CN202612116U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112780602A (en) * | 2021-02-01 | 2021-05-11 | 上海凯泉泵业（集团）有限公司 | Pump shaft structure |
| CN112780602B (en) * | 2021-02-01 | 2024-05-17 | 上海凯泉泵业（集团）有限公司 | Pump shaft structure |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121219 |