CN201351633Y - Novel mechanical seating auxiliary circulating pump - Google Patents
Novel mechanical seating auxiliary circulating pump Download PDFInfo
- Publication number
- CN201351633Y CN201351633Y CNU2008201572120U CN200820157212U CN201351633Y CN 201351633 Y CN201351633 Y CN 201351633Y CN U2008201572120 U CNU2008201572120 U CN U2008201572120U CN 200820157212 U CN200820157212 U CN 200820157212U CN 201351633 Y CN201351633 Y CN 201351633Y
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- CN
- China
- Prior art keywords
- impeller
- end cap
- fixed
- housing
- bearings
- 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 - Lifetime
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Abstract
The utility model relates to a novel mechanical seating auxiliary circulating pump which comprises an end cap, a shell, a bracket, two bearings, a shaft, a shaft coupling sleeve, an impeller, a key, a mechanical seating component and a pin, wherein the end cap is fixed on the front end of the shell for forming a pump flow passage; the bracket is fixed on the back end of the shell; the two bearings are respectively fixed on the end cap and the bracket; the shaft is supported by the two bearings, and is connected with the driving motor through the shaft coupling sleeve; the impeller is in transmission connection with the shaft through the key; gaps are formed between the impeller and the shell; a movable ring of the mechanical seating component is fixed on the shaft; and a fixed ring is fixed on the shell through the pin. Compared with the prior art, the utility model has the advantages that manufacture is convenient, a swirl pump does not need a cast component, and the impeller and an overflow component can be milled through gold processing; the mechanical seating auxiliary circulating pump can run at a high pressure, and a swirl impeller does not generate any axial force; and the hydraulic performance conforms with the requirements of small flow rate and small rotary speed rate.
Description
Technical field
The utility model relates to fluid machinery, particularly relates to a kind of novel mechanical sealing auxiliary circulating pump.
Background technique
External isolation liquid systems according to API Std " API682 centrifugal pump and rotary pump gland seal system " standard flush scheme Plan52 (do not have and press double seals) or Plan53 (the pressure double seals is arranged) or Plan54 (the pressure double seals is arranged) setting, be used for providing clean medium to the double mechanical seal Seal cage, follow insulating liquid by mechanical seal internal whorl pump pumping circulation, insulating liquid plays two effects: 1. isolate the granule foreign in the working medium, 2. take away the heat that mechanical seal end surface produces.
Under general application conditions, equipment is with the rated speed power frequency operation, and mechanical seal internal whorl pump designs with rated speed, to provide enough lifts auxiliary insulating liquid circulation.But under following operating conditions, the internal whorl pump can't meet the demands:
1. when equipment needed converting operation, the working speed scope was big, and the internal whorl pump can't be issued to designing requirement in full operating mode.
2. it is very high to work as the equipment work temperature, and working medium is to the mechanical seal internal heat transfer, and mechanical seal end surface also rubs simultaneously and produces heat, and the insulating liquid speed of circulation that internal whorl pump and thermosyphon effect provide can't derive mechanical seal with these heats.
Under above situation, need in mechanical seal standard flushing scheme, auxiliary circulating pump to be set.
At present, the mechanical seal recycle pump uses centrifugal pump more, but has following problem in some special applications:
1. because in the restriction of mechanical seal insulating liquid state of cyclic operation, flow is very little, and specific speed is also very little, make very high to the designing requirement of pump impeller waterpower.
2. because small-sized, very high requirement has been proposed for the manufacturing of impeller and spiral case.
3. because centrifugal impeller can not balancing axial thrust, having under the double seals condition of pressure, influenced by operating mode, the insulating liquid system pressure can be very high, thereby cause the recycle pump bearing need bear very big axial force, influences the stable operation of bearing life and recycle pump.
Summary of the invention
Technical problem to be solved in the utility model is exactly to provide a kind of easily manufactured novel mechanical sealing auxiliary circulating pump for the defective that overcomes above-mentioned prior art existence.
The purpose of this utility model can be achieved through the following technical solutions: a kind of novel mechanical sealing auxiliary circulating pump, it is characterized in that, comprise end cap, housing, support, two bearings, axle, coupling band, impeller, key, the mechanical seal parts, pin, described end cap is fixed in the front end of housing, constitute the pump runner, described support is fixed in the rear end of housing, described two bearings are individually fixed on end cap and the support, described axle is connected with drive motor by two bearings and by coupling band, described impeller is connected with shaft drive by key, be provided with the gap between this impeller and end cap and housing, the rotating ring of described mechanical seal parts is fixed on the axle, and stationary ring is fixed on the housing by pin.
Be provided with seal ring between described end cap and the housing.
Described end cap is the stainless steel end cap.
Described housing is a Stainless Steel Shell.
Described impeller is provided with equalizing orifice.
Compared with prior art, the utlity model has following advantage:
1, easily manufactured, peripheral pump need not mo(u)lded piece, and its impeller and flow passage components can mill out by gold machining;
2, can under high pressure move, swirl vanes does not produce any axial force;
3, hydraulic performance meets the requirement at the little specific speed of small flow.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Wherein: 1-end cap, 2-impeller, 3-housing, 4-seal ring, 5-mechanical seal parts, 6-pin, 7-support, step bearing before the 8-coupling band, 9-, 10-key, 11-axle, 12-sealing gasket, 13-rear end bearing.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of novel mechanical sealing auxiliary circulating pump, comprise end cap 1, housing 3, support 7, two bearing (preceding step bearings 9, rear end bearing 13), axle 11, coupling band 8, impeller 2, key 10, mechanical seal parts 5, pin 11, described end cap 1 is fixed in the front end of housing 3, constitute the pump runner, described support 7 is fixed in the rear end of housing 3, described two bearings are individually fixed on end cap 1 and the support 7, described axle 11 is connected with drive motor by two bearings and by coupling band 8, described impeller 2 is in transmission connection by key 10 and axle 11,3 of this impeller 2 and end cap 1 and housings are provided with the gap, the rotating ring of described mechanical seal parts 5 is fixed on the axle 11, and stationary ring is fixed on the housing 3 by pin 11.
Be provided with seal ring 4 between described end cap 1 and the housing 3; Described end cap 1 is the stainless steel end cap; Described housing 3 is a Stainless Steel Shell; Described impeller 2 is provided with equalizing orifice.
Present embodiment mainly is made up of end cap 1, impeller 2, housing 3, seal ring 4, mechanical seal parts 5, pin 6, support 7, coupling band 8, bearing 9, key 10, axle 11, sealing gasket 12, bearing 13.End cap 1 constitutes the pump runner with housing 3.By axle 11 transmissions, there is the gap in impeller 2 with end cap 1 and housing 3 to impeller 2 by key 10.Pump seal is mechanical seal, and mechanical sealing linkage ring is fixed on the axle 11, and stationary ring is fixed in housing 3 by pin 6.Pump shaft 11 is by two bearings, and a bearing 9 is fixed in end cap 1, and another bearing 13 is fixed in support 7.Whole rotor connects by coupling band 8 and drive motor.Because there is equalizing orifice in impeller, and because impeller is fixing in the axial direction, impeller front and back pressure is balance all the time, guarantees that impeller is in the runner central position all the time.Because there is the small flow low-specific-speed in swirl vanes, can realize mechanical seal insulating liquid circulation requirement.End cap and housing mill out runner equally, and end cap and shell material are all stainless steel, keep difference of hardness with impeller, prevent the intermetallic interlock, and the impeller material adopts copper material, directly mills out blade.
Claims (5)
1. a novel mechanical seals auxiliary circulating pump, it is characterized in that, comprise end cap, housing, support, two bearings, axle, coupling band, impeller, key, the mechanical seal parts, pin, described end cap is fixed in the front end of housing, constitute the pump runner, described support is fixed in the rear end of housing, described two bearings are individually fixed on end cap and the support, described axle is connected with drive motor by two bearings and by coupling band, described impeller is connected with shaft drive by key, be provided with the gap between this impeller and end cap and housing, the rotating ring of described mechanical seal parts is fixed on the axle, and stationary ring is fixed on the housing by pin.
2. a kind of novel mechanical sealing auxiliary circulating pump according to claim 1 is characterized in that, is provided with seal ring between described end cap and the housing.
3. a kind of novel mechanical sealing auxiliary circulating pump according to claim 1 and 2 is characterized in that described end cap is the stainless steel end cap.
4. want 3 described a kind of novel mechanical sealing auxiliary circulating pumps according to right, it is characterized in that described housing is a Stainless Steel Shell.
5. according to claim 1 or 4 described a kind of novel mechanical sealing auxiliary circulating pumps, it is characterized in that described impeller is provided with equalizing orifice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201572120U CN201351633Y (en) | 2008-12-16 | 2008-12-16 | Novel mechanical seating auxiliary circulating pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201572120U CN201351633Y (en) | 2008-12-16 | 2008-12-16 | Novel mechanical seating auxiliary circulating pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201351633Y true CN201351633Y (en) | 2009-11-25 |
Family
ID=41375020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201572120U Expired - Lifetime CN201351633Y (en) | 2008-12-16 | 2008-12-16 | Novel mechanical seating auxiliary circulating pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201351633Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314834A (en) * | 2014-10-17 | 2015-01-28 | 农立新 | Slurry pumping machine |
| CN104976133A (en) * | 2015-07-11 | 2015-10-14 | 中国水利水电科学研究院 | High temperature water pump of mechanical seal and vortex pump closed type self-circular system |
| CN113323894A (en) * | 2021-06-04 | 2021-08-31 | 烟台东德实业有限公司 | Anticorrosive explosion-proof vortex type hydrogen circulating pump |
-
2008
- 2008-12-16 CN CNU2008201572120U patent/CN201351633Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314834A (en) * | 2014-10-17 | 2015-01-28 | 农立新 | Slurry pumping machine |
| CN104976133A (en) * | 2015-07-11 | 2015-10-14 | 中国水利水电科学研究院 | High temperature water pump of mechanical seal and vortex pump closed type self-circular system |
| CN113323894A (en) * | 2021-06-04 | 2021-08-31 | 烟台东德实业有限公司 | Anticorrosive explosion-proof vortex type hydrogen circulating pump |
| CN113323894B (en) * | 2021-06-04 | 2022-08-12 | 烟台东德实业有限公司 | Anticorrosive explosion-proof vortex type hydrogen circulating pump |
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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: 20091125 |
|
| CX01 | Expiry of patent term |