CN205013359U - Vertical centrifugal pump - Google Patents
Vertical centrifugal pump Download PDFInfo
- Publication number
- CN205013359U CN205013359U CN201520576052.3U CN201520576052U CN205013359U CN 205013359 U CN205013359 U CN 205013359U CN 201520576052 U CN201520576052 U CN 201520576052U CN 205013359 U CN205013359 U CN 205013359U
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- China
- Prior art keywords
- impeller
- ceramic bearing
- pump housing
- vertical centrifugal
- end cap
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Abstract
The utility model discloses a vertical centrifugal pump, including the pump body, arrange the impeller of pump body inner chamber in, the pump body includes upper end cover, bottom end cover, is provided with sealing mechanism between the upper end cover of the impeller and the pump body, the bottom end cover, sealing mechanism includes ceramic bearing, and ceramic bearing's upper and lower terminal surface all is provided with the end cover, ceramic bearing inner circle and the seamless inseparable laminating of impeller, ceramic bearing outer lane and the seamless inseparable laminating of the pump body. The utility model has the advantages that: prevent frostbite and to split, prevent rustting, it is efficient, the choma does not need to be changed.
Description
Technical field
The utility model relates to a kind of pump, and more particularly, it relates to a kind of vertical centrifugal pump.
Background technique
Vertical centrifugal pump utilizes vane rotary and makes water generation centrifugal motion carry out work, water pump before activation, make to be full of water in pump case and suction sleeve, then starting electrical machinery, makes pump shaft impeller and water do high speed rotary motion, water generation centrifugal motion, be thrown toward impeller outer edge, thus forming low pressure in impeller central, therefore the liquid in Lower tank sucted continuously, and the runner through the volute pump housing is discharged.
Because impeller is rotatable parts; the pump housing is fixed component; gap must be left between them; and the two ends in gap also exist pressure difference; thus leakage is caused; in order to prevent unnecessary leakage; Sealing must be set at gap location; and what adopt in pump technology at present is choma; make clearance seal between impeller and the pump housing, namely rely on throttle clearance to reach sealing purpose, the effect that on protection pump, major part is not frayed is also played in the setting of vertical centrifugal pump choma; after sealing mechanism wearing and tearing, can repair or more renew ring, recover normal fit up gap.
But due to the annular that existing choma is metal material, use between rear impeller and the pump housing and also there is gap, still producing volumetric loss, at present, is 0.15-0.20mm at the common impeller of water pump industry and pump housing gap, efficiency is only 70%, namely have the water of 30% to be wasted, this part water along the gap reflux between choma and impeller, thus can cause the waste on the energy, and need to change choma, not only time-consuming but also waste material. on time
Vertical centrifugal pump uses rear portion water can be remaining in the pump housing, if do not discharged by the water in the pump housing, the pump housing can be caused to get rusty, and at the vertical centrifugal pump of cold local work, water in the pump housing is not discharged after having worked, the water freezing in the pump housing will be caused, make pump housing bursting by freezing.
Model utility content
For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of frost-cracking-preventing, anti-gets rusty, and efficiency is high, do not need the vertical centrifugal pump changing choma.
For achieving the above object, the utility model provides following technological scheme: a kind of vertical centrifugal pump, comprise the pump housing, be placed in the impeller of pump housing inner chamber, the pump housing comprises upper end cap, lower end cap, be provided with sealing mechanism between the upper end cap of impeller and the pump housing, lower end cap, described sealing mechanism comprises ceramic bearing, and the upper and lower end face of ceramic bearing is provided with end cover, ceramic bearing inner ring and impeller is seamless fits tightly, ceramic bearing outer ring and the pump housing is seamless fits tightly.
By adopting technique scheme, ceramic bearing is loaded between impeller and the pump housing, and ceramic bearing upper and lower end face is all provided with end cover, formed between impeller and the pump housing with ceramic bearing and be sealed and matched and ceramic bearing and impeller, pump housing joint all adopts gapless compact siro spinning technology, prevent there is gap between impeller and the pump housing, prevent a part of water along the gap reflux between the pump housing and impeller, cause the waste on the energy, during work, motor impeller is rotated, impeller drives ceramic bearing to rotate, Relative friction is not had between impeller and the pump housing, the damage of impeller and the pump housing can not be caused, and ceramic bearing long service life, do not need to change, do not need to safeguard on time, save the time, save resource.
The utility model is set to further: described ceramic bearing is evenly provided with some projections along inner ring.
The utility model is set to further: described impeller is provided with the groove coordinated with projection.
By adopting technique scheme, be connected between ceramic bearing with the pump housing, be connected between ceramic bearing with impeller and all need to be fixedly connected with, can not relative sliding, generally we adopt interference fit to make ceramic bearing with the pump housing, be connected between ceramic bearing with impeller, but impeller material is thinner, interference fit should not be used between impeller and bearing, impeller can be made to produce deformation according to interference fit, cause easy skidding, so with the groove be arranged on the projection of ceramic bearing inner ring and impeller, making can not relative sliding between impeller and ceramic bearing.
The utility model is set to further: the described pump housing is provided with drainage element.
The utility model is set to further: be provided with weep hole bottom described lower end cap, and described drainage element comprises tight bolt, and described sealing bolt and weep hole are sealed and matched.
By adopting technique scheme, by being arranged on the drainage element on the pump housing, can when not using vertical centrifugal pump, back out sealing bolt, the water in the pump housing is discharged, in case get rusty after the long-term ponding of pump body, also prevent at the cold area water freezing bursting by freezing pump housing, sealing bolt of screwing on after water is drained.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the structural drawing of the utility model vertical centrifugal pump embodiment;
Fig. 2 is the ceramic bearing plan view of the utility model vertical centrifugal pump embodiment;
Fig. 3 is the impeller plan view of the utility model vertical centrifugal pump embodiment.
Reference character: 1, the pump housing, 2, ceramic bearing, 3, drainage element, 4, impeller, 5, projection, 6, groove, 7, end cover, 8, suction sleeve, 9, outlet pipe, 10, upper end cap, 11, lower end cap.
Embodiment
Referring to figs. 1 through Fig. 3, the utility model embodiment is described further.
As shown in Figure 1, a kind of vertical centrifugal pump, comprise the pump housing 1, be placed in the impeller 4 of the pump housing 1 inner chamber, the pump housing 1 comprises upper end cap 10, lower end cap 11, the upper end cap 10 of impeller 4 and the pump housing 1, sealing mechanism is provided with between lower end cap 11, described sealing mechanism comprises ceramic bearing 2, the upper and lower end face of ceramic bearing 2 is provided with end cover 7, ceramic bearing 2 inner ring and impeller 4 is seamless fits tightly, ceramic bearing 2 outer ring and the pump housing 1 is seamless fits tightly, ceramic bearing 2 is loaded between impeller 4 and the pump housing 1, and the upper and lower end face of ceramic bearing 2 is provided with end cover 7, formed between impeller 4 and the pump housing 1 with ceramic bearing 2 and be sealed, prevent there is gap between impeller 4 and the pump housing 1, prevent a part of water along the gap reflux between the pump housing 1 and impeller 4, cause the waste on the energy, and ceramic bearing 2 long service life, do not need to change, do not need to safeguard on time, save the time, save resource.
As shown in Figure 1, impeller 4 is placed between upper end cap 10 and lower end cap 11, and the dead in line of the spin axis of impeller 4 and suction sleeve 8, ceramic bearing 2 is arranged on impeller 4 both sides along the rotating shaft of impeller 4, described end cover 7 is sealing rubber rings, sealing rubber ring outer ring and ceramic bearing 2 outer ring compact siro spinning technology, and sealing rubber ring inner ring and ceramic bearing 2 inner ring are fitted, ceramic bearing 2 can be sealed, anti-sealing spills from ceramic bearing 2.
Described ceramic bearing 2 is evenly provided with some projections 5 along inner ring, described impeller 4 is provided with corresponding position, projection 5 position the groove 6 coordinated with projection 5, because impeller 4 material is thinner, interference fit should not be used between impeller 4 and ceramic bearing 2, easy skidding can be caused, so with being arranged on the projection 5 of ceramic bearing 2 inner ring and the groove 6 on impeller 4, making can not relative sliding between impeller 4 and ceramic bearing 2.
Described projection 5 is cuboid, and projection 5 quantity is four, is evenly distributed on the inner ring of ceramic bearing 2.
The described pump housing 1 is provided with drainage element 3, weep hole is provided with bottom suction sleeve 8 on lower end cap 11, described drainage element 3 comprises tight bolt, described sealing bolt and weep hole are sealed and matched, when not using vertical centrifugal pump, sealing bolt can be backed out, the water in the pump housing 1 is discharged, in case get rusty after the inner long-term ponding of the pump housing 1, also prevent at the cold area water freezing bursting by freezing pump housing 1.
The above is only preferred implementation of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, and all technological schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (5)
1. a vertical centrifugal pump, comprise the pump housing, be placed in the impeller of pump housing inner chamber, the pump housing comprises upper end cap, lower end cap, it is characterized in that: between the upper end cap of impeller and the pump housing, lower end cap, be provided with sealing mechanism, described sealing mechanism comprises ceramic bearing, the upper and lower end face of ceramic bearing is provided with end cover, described ceramic bearing inner ring and impeller is seamless fits tightly, ceramic bearing outer ring and the pump housing is seamless fits tightly.
2. vertical centrifugal pump according to claim 1, is characterized in that: described ceramic bearing is evenly provided with some projections along inner ring.
3. vertical centrifugal pump according to claim 2, is characterized in that: described impeller is provided with the groove coordinated with projection.
4. vertical centrifugal pump according to claim 1, is characterized in that: the described pump housing is provided with drainage element.
5. vertical centrifugal pump according to claim 4, is characterized in that: be provided with weep hole bottom described lower end cap, and described drainage element comprises tight bolt, and described sealing bolt and weep hole are sealed and matched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520576052.3U CN205013359U (en) | 2015-08-03 | 2015-08-03 | Vertical centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520576052.3U CN205013359U (en) | 2015-08-03 | 2015-08-03 | Vertical centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205013359U true CN205013359U (en) | 2016-02-03 |
Family
ID=55211968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520576052.3U Active CN205013359U (en) | 2015-08-03 | 2015-08-03 | Vertical centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205013359U (en) |
-
2015
- 2015-08-03 CN CN201520576052.3U patent/CN205013359U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |