CN102287396A - Self-suction water pump and water seal thereof - Google Patents
Self-suction water pump and water seal thereof Download PDFInfo
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- CN102287396A CN102287396A CN2011102843554A CN201110284355A CN102287396A CN 102287396 A CN102287396 A CN 102287396A CN 2011102843554 A CN2011102843554 A CN 2011102843554A CN 201110284355 A CN201110284355 A CN 201110284355A CN 102287396 A CN102287396 A CN 102287396A
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Abstract
The invention provides a water seal, which is used for being matched with a power shaft of a self-suction water pump. The water seal comprises an outer sealing ring (5), an inner sealing ring (2) and an annular sealing lip (3), wherein the outer sealing ring (5) is provided with an annular boss; the inner sealing ring (2) is sleeved inside the outer sealing ring (5); the outer wall of the inner sealing ring (2) is hermetically jointed with the inner wall of the outer sealing ring (5); one end of the annular sealing lip (3) is fixedly formed between the annular boss of the outer sealing ring (5) and the bottom end of the inner sealing ring (2), and the other end of the annular sealing lip (3) extends into the central hole of the inner sealing ring (2); and the annular sealing lip (3) inclines towards the top end of the inner sealing ring (2), and is hermetically jointed with the power shaft under the action of water pressure. The water seal has a simple structure and a smaller installation space; and a sealing effect is realized through water pressure instead of a mechanical seal, so that sealing is more reasonable. The invention further provides the self-suction water pump provided with the water seal.
Description
Technical field
The present invention relates to the pump technology field, more particularly, relate to a kind of water seal, the invention still further relates to a kind of self prime pump with above-mentioned water seal.
Background technique
Continuous progress along with sociometric technique, water has been brought into play increasing effect in social life, the not same-action that water is brought into play has in every respect promoted social progress greatly, therefore, the development of hydraulic engineering has also obtained people and has more paid attention to, self prime pump has all obtained using widely in every field as a kind of very important equipment in the hydraulic engineering.
Self prime pump is a kind of of water pump, and as shown in Figure 1, its principle is that impeller 04 high speed rotating makes current direction volute 12 in the impeller conduit 14 behind the starting mode of pump, by circulation repeatedly, gradually the air in the pump housing 11 is drained the formation vacuum, water is entered in the pump housing 11, finish the self-priming process.Because working procedure need vacuumize, thus must sealing between the line shaft that puts in impeller 04 rotation in the pump housing 11 and the pump housing 11, seal herein and be called water seal.As shown in Figure 2, in the prior art, the water seal of self prime pump all is the mechanical seal of adopting, be a combination seal of rotating ring 03 and stationary ring 02, rotating ring 03 is installed on the impeller 04, and stationary ring 02 is installed on the bottom 01, when line shaft rotates, relatively rotate between rotating ring 03 and the stationary ring 02, inevitably can wear and tear between rotating ring 03 and the stationary ring 02, finally cause seal failure because of wearing and tearing.The structure more complicated of this kind sealing, the installing space that needs is bigger, and damages easily owing to bear hydraulic pressure and wearing and tearing for a long time, the phenomenon of seal failure occurs, is an easy-to-damage element of self prime pump.
In sum, how providing a kind of water seal, to realize saving the purpose of installing space, is present those skilled in the art's problem demanding prompt solution.
Summary of the invention
In view of this, the invention provides a kind of water seal,, improve its sealability, increase the service life to realize the saving installing space of water seal in self prime pump.
In order to achieve the above object, the invention provides following technological scheme:
A kind of water seal, the line shaft that is used for self prime pump matches, and comprising:
Exterior seal ring, it has annular boss;
Be set in described exterior seal ring inside, and the inner seal ring of the inner wall sealing of outer wall and described exterior seal ring applying;
One end is installed between the annular boss and inner seal ring bottom of described exterior seal ring, the other end is stretched in the center hole of described inner seal ring outward, and the top towards described inner seal ring tilts, and the annular seal lip of fitting with described line shaft sealing under the effect of hydraulic pressure.
Preferably, in the above-mentioned water seal, the shape of cross section of described exterior seal ring is L shaped.
Preferably, in the above-mentioned water seal, the top of described exterior seal ring is provided with the annular hook.
Preferably, in the above-mentioned water seal, the shape of cross section of described inner seal ring is L shaped.
Preferably, in the above-mentioned water seal, described annular seal lip is the politef annular seal lip.
Preferably, in the above-mentioned water seal, be provided with the politef packing ring between described annular seal lip and the described exterior seal ring.
Based on the above-mentioned water seal that provides, the present invention also provides a kind of self prime pump, and it has above-mentioned any described water seal.
Preferably, has the vent that is communicated with atmosphere between the water seal of the bottom of this self prime pump and the oil sealing.
With respect to prior art, this practical new beneficial effect is:
Water seal provided by the invention, exterior seal ring is installed on the bottom, inner seal ring and exterior seal ring are sealed and matched, one end of annular seal lip is arranged between the annular boss and inner seal ring bottom of exterior seal ring, the other end is stretched in the center hole of inner seal ring outward and is tilted towards the top of inner seal ring, when self prime pump is worked, water can push the end that annular seal lip is stretched in the inner seal ring center hole outward, make it near the line shaft that passes water seal and final and its sealing applying, thereby reach the purpose of sealing.This kind sealing structure for water is simple, and the installing space that needs is less, and the effect of its sealing realizes by hydraulic pressure, rather than employing mechanical seal, makes sealing more reasonable.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technological scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The structural representation of the self prime pump that Fig. 1 provides for the embodiment of the invention;
Fig. 2 is the rotating ring of self prime pump in the prior art and the scheme of installation of stationary ring;
The structural representation of the water seal that provides in the embodiment of the invention is provided Fig. 3;
Among last Fig. 1-Fig. 3:
Embodiment
The invention provides a kind of water seal,, make self prime pump structurally more compact owing to the purpose that has realized saving its installing space in self prime pump simple in structure.
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technological scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiments.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment who is obtained under the creative work prerequisite.
Please refer to accompanying drawing 3, the water seal that the embodiment of the invention provides is used for matching with the line shaft of self prime pump, comprising:
Be set in described exterior seal ring 5 inside, and the inner seal ring 2 of the inner wall sealing of outer wall and described exterior seal ring 5 applying, inner seal ring 2 can not relatively move or rotate with exterior seal ring 5;
One end is installed between the annular boss and inner seal ring 2 bottoms of described exterior seal ring 5, the other end is stretched in the center hole of described inner seal ring 2 outward, and the top towards described inner seal ring 2 tilts, and the annular seal lip 3 of under the effect of hydraulic pressure, fitting with described line shaft sealing, this annular seal lip 3 has better elastic, can be to the direction generation deformation of inner seal ring 2 bottoms under the punching press of current.
The water seal working procedure that provides in the present embodiment is as follows:
After self prime pump is started working, because exterior seal ring 5 is fixedly mounted on the self prime pump, water is punching press annular seal lip 3 under the effect of pressure, make it to the direction generation deformation of inner seal ring 2 bottoms and move, and then it is also fitted with its sealing gradually near the line shaft that passes the water seal center hole, finally reach the purpose of sealing.
Can draw by above-mentioned working procedure, water seal provided by the invention, the effect of its sealing realizes by hydraulic pressure, rather than employing mechanical seal, and then its structure is simplified greatly, has dwindled installing space, makes sealing more reasonable.
For the further technique scheme of optimizing, the water seal that provides in the foregoing description, the shape of cross section of described exterior seal ring 5 is L shaped, concrete, its structure can also adopt other shapes, all can as long as meet the structure of its job requirement.
For the further technique scheme of optimizing, the water seal that provides in the foregoing description, the top of described exterior seal ring 5 is provided with annular hook 1.Annular hook is used for the axially locating to inner seal ring 2, strengthens sealing effect, and the structure that makes water seal is compact and reasonable more.
For the further technique scheme of optimizing, the water seal that provides in the foregoing description, the shape of cross section of described inner seal ring 2 is L shaped, concrete, its structure can also adopt other shapes, all can as long as meet the structure of its job requirement.
In order further to optimize technique scheme, the water seal that provides in the foregoing description, described annular seal lip 3 is the politef annular seal lip, because annular seal lip 3 can rub with line shaft when work, so it will possess good wear resistance, improved the working life of whole water seal, concrete, annular seal lip 3 can also adopt the good material of other wear resistancies.
In order further to optimize technique scheme, the water seal that provides in the foregoing description is provided with politef packing ring 4 between described annular seal lip 3 and the described exterior seal ring 5.Politef packing ring 4 is set makes that the sealability between annular seal lip 3 and the exterior seal ring 5 is better.
Based on the water seal that provides in the foregoing description, the embodiment of the invention also provides a kind of self prime pump, and the water seal that provides in the foregoing description is provided this self prime pump.
Because this self prime pump has adopted the water seal of the foregoing description,, do not repeat them here so the beneficial effect that this self prime pump is brought by water seal please refer to corresponding part in the foregoing description.
In order further to optimize technique scheme, the self prime pump that provides in the foregoing description has the vent 15 that is communicated with atmosphere between the water seal of the bottom 01 of this self prime pump and the oil sealing 13.This vent 15 can provide the passage of an outflow to reduce pressure for the current of pressurized, avoids taking place because of the excessive situation that annular seal lip 3 is damaged of hydraulic pressure.
To the above-mentioned explanation of the disclosed embodiments, make related domain professional and technical personnel can realize or use the present invention.Multiple modification to these embodiments will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments.Therefore, the present invention will can not be restricted to these embodiments shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (8)
1. water seal is used for matching with the line shaft of self prime pump, it is characterized in that, comprising:
Exterior seal ring (5), it has annular boss;
Be set in described exterior seal ring (5) inside, and the inner seal ring (2) of the inner wall sealing of outer wall and described exterior seal ring (5) applying;
One end is installed between the annular boss and inner seal ring (2) bottom of described exterior seal ring (5), the other end is stretched in the center hole of described inner seal ring (2) outward, and the top towards described inner seal ring (2) tilts, and the annular seal lip (3) of fitting with described line shaft sealing under the effect of hydraulic pressure.
2. water seal according to claim 1 is characterized in that, the shape of cross section of described exterior seal ring (5) is L shaped.
3. water seal according to claim 2 is characterized in that, the top of described exterior seal ring (5) is provided with annular hook (1).
4. water seal according to claim 1 is characterized in that, the shape of cross section of described inner seal ring (2) is L shaped.
5. according to any described water seal among the claim 1-4, it is characterized in that described annular seal lip (3) is the politef annular seal lip.
6. water seal according to claim 5 is characterized in that, is provided with politef packing ring (4) between described annular seal lip (3) and the described exterior seal ring (5).
7. a self prime pump is characterized in that, it has any described water seal among the aforesaid right requirement 1-6.
8. self prime pump according to claim 7 is characterized in that, has the vent (15) that is communicated with atmosphere between the water seal of the bottom of this self prime pump (01) and the oil sealing (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102843554A CN102287396A (en) | 2011-09-22 | 2011-09-22 | Self-suction water pump and water seal thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102843554A CN102287396A (en) | 2011-09-22 | 2011-09-22 | Self-suction water pump and water seal thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102287396A true CN102287396A (en) | 2011-12-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102843554A Pending CN102287396A (en) | 2011-09-22 | 2011-09-22 | Self-suction water pump and water seal thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100885A (en) * | 2017-05-19 | 2017-08-29 | 利欧集团浙江泵业有限公司 | A kind of self-adapting seal part |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0173579A1 (en) * | 1984-08-31 | 1986-03-05 | Sanden Corporation | Shaft seal for a compressor |
| CN1038148A (en) * | 1988-05-31 | 1989-12-20 | 钱德森 | Wide lip-shaped fluoroplastic water sealing member |
| CN201627633U (en) * | 2010-03-22 | 2010-11-10 | 青岛开世密封工业有限公司 | Thermostat water seal |
| CN101956714A (en) * | 2009-07-18 | 2011-01-26 | 龙口市龙工泵业科技有限公司 | Seawater self-sucking pump |
| CN202266491U (en) * | 2011-09-22 | 2012-06-06 | 重庆华世丹机械制造有限公司 | Self-priming type water pump and water seal thereof |
-
2011
- 2011-09-22 CN CN2011102843554A patent/CN102287396A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0173579A1 (en) * | 1984-08-31 | 1986-03-05 | Sanden Corporation | Shaft seal for a compressor |
| CN1038148A (en) * | 1988-05-31 | 1989-12-20 | 钱德森 | Wide lip-shaped fluoroplastic water sealing member |
| CN101956714A (en) * | 2009-07-18 | 2011-01-26 | 龙口市龙工泵业科技有限公司 | Seawater self-sucking pump |
| CN201627633U (en) * | 2010-03-22 | 2010-11-10 | 青岛开世密封工业有限公司 | Thermostat water seal |
| CN202266491U (en) * | 2011-09-22 | 2012-06-06 | 重庆华世丹机械制造有限公司 | Self-priming type water pump and water seal thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100885A (en) * | 2017-05-19 | 2017-08-29 | 利欧集团浙江泵业有限公司 | A kind of self-adapting seal part |
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Application publication date: 20111221 |