CN103629147B - Engine water pump seal structure assembly - Google Patents
Engine water pump seal structure assembly Download PDFInfo
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- CN103629147B CN103629147B CN201310627001.4A CN201310627001A CN103629147B CN 103629147 B CN103629147 B CN 103629147B CN 201310627001 A CN201310627001 A CN 201310627001A CN 103629147 B CN103629147 B CN 103629147B
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- water pump
- labyrinth
- seal
- spindle
- housing
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Abstract
The invention discloses engine water pump seal structure assembly, comprise the pump housing, water pump spindle and the mechanical seal device being arranged on pump housing side, also labyrinth gland is coaxially arranged with at described pump housing opposite side, described labyrinth gland comprises the labyrinth seal that is coated at water pump spindle and to be connected with the pump housing and by the gland of labyrinth seal radial compaction in water pump spindle, on described water pump spindle, circumference is provided with several dash ring gear, on described labyrinth seal, corresponding dash ring gear correspondence is provided with labyrinth annular groove, described labyrinth annular groove forms seal path with corresponding dash ring gear Spielpassung, except mechanical seal device, also be provided with labyrinth gland, not only together can use with mechanical seal device, greatly improve the sealability of water pump, also can when mechanical seal device sustains damage due to the axial float of water pump spindle, the working procedure of water pump conveying cooling liquid is sealed separately, guarantees the sealability of water pump all the time, farthest reduce the seepage of cooling liquid.
Description
Technical field
The present invention relates to a kind of engine cooling parts, particularly a kind of engine water pump seal structure assembly.
Background technique
Engine water pump is the important composition parts of Water-cooling System, and its effect is pumping cooling liquid, cooling liquid is flowed in the cooling water channel of motor, the heat produced during to take away engine operation fast, keeps engine work temperature.
In prior art, engine water pump many employings mechanical seal mode, comprise rotating ring body and stationary ring body composition, stationary ring body is fixed on pump seat, and rotating ring body is and water pump spindle Concentric rotation body, with water pump spindle High Rotation Speed.Single mechanical seal structure is used to make the sealability of engine water pump be difficult to ensure, because in pump working process, because machining accuracy is inadequate, it is large to vibrate the axis amount of altering that is bigger than normal or pump shaft, usually easily cause the wearing and tearing between mechanical sealing element, thus affect sealing effect, cause cooling liquid to leak, motor fuel is polluted.The wherein axis amount of altering the having the greatest impact to mechanical seal of water pump spindle, because the sealing surface of mechanical seal will have certain specific pressure, so just seal action can be played, this just requires that the spring of mechanical seal will have certain decrement, to seal face thrust, rotate and make sealing surface produce the specific pressure required by sealing.In order to ensure this specific pressure, mechanical seal requirement pump shaft can not have the too large amount of altering.When the axial amount of altering of pump shaft exceedes requirement, mechanical seal will bear an axial force, during pump operation, sealing gland temperature is by higher, for the medium of PP type, at high temperature can be melted, therefore lose sealing effect soon after pump startup, when pump is static, then seal face occurs that phenomenon is leaked in the spray be interrupted.
Therefore, need to improve available engine water pump, when mechanical seal device sustains damage due to the axial float of water pump spindle, the working procedure of water pump conveying cooling liquid can be sealed separately, all the time guarantee the sealability of water pump, farthest reduce the seepage of cooling liquid.
Summary of the invention
In view of this, the invention provides a kind of engine water pump seal structure assembly, can when mechanical seal device sustains damage due to the axial float of water pump spindle, the working procedure of water pump conveying cooling liquid is sealed separately, all the time guarantee the sealability of water pump, farthest reduce the seepage of cooling liquid.
Engine water pump seal structure assembly of the present invention, comprise the pump housing, water pump spindle and be arranged on the mechanical seal device of pump housing side, also labyrinth gland is coaxially arranged with at described pump housing opposite side, described labyrinth gland comprises the labyrinth seal that is coated at water pump spindle and to be connected with the pump housing and by the gland of labyrinth seal radial compaction in water pump spindle, on described water pump spindle, circumference is provided with several dash ring gear, on described labyrinth seal, corresponding dash ring gear correspondence is provided with labyrinth annular groove, and described labyrinth annular groove forms seal path with corresponding dash ring gear Spielpassung.
Further, also comprise and to be connected with the pump housing and axially inwardly spacing position-restricted housing is formed to water pump spindle, described water pump spindle is provided with the annular stop platform I with position-restricted housing corresponding matching, described water pump spindle is also provided with annular stop platform I, and described annular stop platform is resisted against the described pump housing vertically and is formed axially outside spacing.
Further, described position-restricted housing comprises limited part and the joint for being connected with the pump housing, and described limited part is coated at described water pump spindle and leans with described annular stop platform I.
Further, cave in and form spacing heavy stand in described pump housing opposed annular limit dais II side, annular stop platform II is positioned at spacing heavy stand and is connected by bearing.
Further, axially horizontal T-shaped stuffing box gland is added between described bearing and described spacing heavy stand.
Further, described position-restricted housing inside forms pressurization working lumen, described labyrinth seal is between described annular stop platform I and described annular stop platform II, be provided with the ring-shaped rubber sealing lip being coated at water pump spindle between described labyrinth seal and described annular stop platform II, described ring-shaped rubber sealing lip lip is towards the pump housing.
Further, O-ring seal is provided with between the limited part of described position-restricted housing and water pump.
Beneficial effect of the present invention: engine water pump seal structure assembly of the present invention, except mechanical seal device, also be provided with labyrinth gland, not only together can use with mechanical seal device, greatly improve the sealability of water pump, also when mechanical seal device sustains damage due to the axial float of water pump spindle, the working procedure of water pump conveying cooling liquid can be sealed separately, all the time guarantee the sealability of water pump, farthest reduce the seepage of cooling liquid.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is structural representation of the present invention.
Embodiment
Fig. 1 is structural representation of the present invention, as shown in Figure 1: the engine water pump seal structure assembly of the present embodiment, comprise the pump housing 1, water pump spindle 2 and the mechanical seal device being arranged on the pump housing 1 side, also labyrinth gland is coaxially arranged with at the described pump housing 1 opposite side, described labyrinth gland comprises the labyrinth seal 3 that is coated at water pump spindle 2 and to be connected with the pump housing 1 and by the gland 4 of labyrinth seal 3 radial compaction in water pump spindle 2, on described water pump spindle, circumference is provided with several dash ring gear 5, on described labyrinth seal 3, corresponding dash ring gear 5 correspondence is provided with labyrinth annular groove 6, described labyrinth annular groove 6 forms seal path with corresponding dash ring gear 5 Spielpassung, in addition, mechanical seal device in the present embodiment comprises stationary ring body 7 and moving ring assembly, and moving ring assembly comprises gland 8, rotating ring body 9 and spring 10, in addition, water pump of the present invention also comprises impeller, rotor, the gimbal balanced water pump spindle axial force and Balance disc, all belongs to prior art.
In the present embodiment, also comprise and to be connected with the pump housing 1 and axially inwardly spacing position-restricted housing 11 is formed to water pump spindle 2, described water pump spindle 2 is provided with the annular stop platform I 12 with position-restricted housing 11 corresponding matching, described water pump spindle is also provided with annular stop platform II 13, and described annular stop platform II 13 is resisted against the described pump housing 1 vertically and is formed axially outside spacing; In the present embodiment, direction for moving axially towards the pump housing in indication, indication then refers to the direction moved axially away from the pump housing outward, annular stop platform I is formed spacing with position-restricted housing, annular stop platform II with the axial float of acting in conjunction to water pump spindle of the pump housing, reduce the axis amount of altering of water pump spindle, thus the axial force that reduction mechanical seal device bears, and then reach the mechanical wear that in reduction mechanical seal device, stationary ring body and rotating ring body cause because of axial float, improve the working life of mechanical seal device.
In the present embodiment, described position-restricted housing 11 comprises limited part 111 and the joint 112 for being connected with the pump housing 1, and described limited part 112 is coated at described water pump spindle 2 and leans with described annular stop platform I 12; Annular stop platform I can be fixedly connected with water pump spindle and in company with rotating, also can not connect, reaching spacing effect by the axial compression between labyrinth seal 3, annular stop platform II.
In the present embodiment, cave in and form spacing heavy stand 14 in the described pump housing 1 opposed annular limit dais II 13 side, annular stop platform II 13 is positioned at spacing heavy stand and is connected by bearing 15; Do not affecting while water pump spindle rotates about the axis, the pump housing reaches axially outside spacing to water pump spindle by the abutment action of spacing heavy stand and annular stop platform II, good limit effect, and realizes convenient, does not affect water pump spindle and normally works.
In the present embodiment, the gap added between described bearing 15 and described spacing heavy stand 14 axially between horizontal T-shaped stuffing box gland 16 pairs of bearings and spacing heavy stand is closed, and ensures good sealing effect.
In the present embodiment, described position-restricted housing inside forms pressurization working lumen, described labyrinth seal is between described annular stop platform I and described annular stop platform II, be provided with the ring-shaped rubber sealing lip 17 being coated at water pump spindle between described labyrinth seal and described annular stop platform II, described ring-shaped rubber sealing lip lip is towards the pump housing; Ring-shaped rubber sealing lip not only can play the effect of radial clearance between stuffing box bearing and annular stop platform II, and belong to axial seal, combine with the radial seal of mechanical seal device and labyrinth gland, further raising sealing effect, and ring-shaped rubber sealing lip also can play cushioning effect, the displacement that water pump spindle is a small amount of can be allowed, be conducive to balancing axial thrust.
In the present embodiment, between the limited part of described position-restricted housing and water pump, be provided with O-ring seal 18; O-ring seal can be rubber seal or metal o-ring, or is other seal ring existing, can form radial seal to water pump spindle, plays the effect in gap between good sealing position-restricted housing limited part and water pump spindle.
What finally illustrate is, above embodiment is only in order to illustrate technological scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technological scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (6)
1. an engine water pump seal structure assembly, comprise the pump housing, water pump spindle and the mechanical seal device being arranged on pump housing side, it is characterized in that: be also coaxially arranged with labyrinth gland at described pump housing opposite side, described labyrinth gland comprises the labyrinth seal that is coated at water pump spindle and to be connected with the pump housing and by the gland of labyrinth seal radial compaction in water pump spindle, on described water pump spindle, circumference is provided with several dash ring gear, on described labyrinth seal, corresponding dash ring gear correspondence is provided with labyrinth annular groove, described labyrinth annular groove forms seal path with corresponding dash ring gear Spielpassung, also comprise and to be connected with the pump housing and axially inwardly spacing position-restricted housing is formed to water pump spindle, described water pump spindle is provided with the annular stop platform I with position-restricted housing corresponding matching, described water pump spindle is also provided with annular stop platform II, and described annular stop platform II is resisted against the described pump housing vertically and is formed axially outside spacing.
2. engine water pump seal structure assembly according to claim 1, is characterized in that: described position-restricted housing comprises limited part and the joint for being connected with the pump housing, and described limited part is coated at described water pump spindle and leans with described annular stop platform I.
3. engine water pump seal structure assembly according to claim 2, is characterized in that: cave in and form spacing heavy stand in described pump housing opposed annular limit dais II side, annular stop platform II is positioned at spacing heavy stand and is connected by bearing.
4. engine water pump seal structure assembly according to claim 3, is characterized in that: add axially horizontal T-shaped stuffing box gland between described bearing and described spacing heavy stand.
5. engine water pump seal structure assembly according to claim 4, it is characterized in that: described position-restricted housing inside forms pressurization working lumen, described labyrinth seal is between described annular stop platform I and described annular stop platform II, be provided with the ring-shaped rubber sealing lip being coated at water pump spindle between described labyrinth seal and described annular stop platform II, described ring-shaped rubber sealing lip lip is towards the pump housing.
6. engine water pump seal structure assembly according to claim 5, is characterized in that: be provided with O-ring seal between the limited part of described position-restricted housing and water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310627001.4A CN103629147B (en) | 2013-11-29 | 2013-11-29 | Engine water pump seal structure assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310627001.4A CN103629147B (en) | 2013-11-29 | 2013-11-29 | Engine water pump seal structure assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103629147A CN103629147A (en) | 2014-03-12 |
| CN103629147B true CN103629147B (en) | 2015-12-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310627001.4A Active CN103629147B (en) | 2013-11-29 | 2013-11-29 | Engine water pump seal structure assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103629147B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1314664A (en) * | 1970-07-13 | 1973-04-26 | Wilfley Sons Inc A R | Centrifugal pump and seal means therefor |
| US4335886A (en) * | 1980-07-22 | 1982-06-22 | Cornell Pump Company | Labyrinth seal with current-forming sealing passages |
| CN2311656Y (en) * | 1997-11-13 | 1999-03-24 | 杜文武 | Sealing device of shaft end for water pump |
| CN201739160U (en) * | 2010-06-18 | 2011-02-09 | 山东昌邑石化有限公司 | Sealing structure of high-pressure water-injection pump |
| CN203627290U (en) * | 2013-11-29 | 2014-06-04 | 东风小康汽车有限公司重庆分公司 | Engine water pump sealing structure assembly |
-
2013
- 2013-11-29 CN CN201310627001.4A patent/CN103629147B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1314664A (en) * | 1970-07-13 | 1973-04-26 | Wilfley Sons Inc A R | Centrifugal pump and seal means therefor |
| US4335886A (en) * | 1980-07-22 | 1982-06-22 | Cornell Pump Company | Labyrinth seal with current-forming sealing passages |
| CN2311656Y (en) * | 1997-11-13 | 1999-03-24 | 杜文武 | Sealing device of shaft end for water pump |
| CN201739160U (en) * | 2010-06-18 | 2011-02-09 | 山东昌邑石化有限公司 | Sealing structure of high-pressure water-injection pump |
| CN203627290U (en) * | 2013-11-29 | 2014-06-04 | 东风小康汽车有限公司重庆分公司 | Engine water pump sealing structure assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103629147A (en) | 2014-03-12 |
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