CN101493096B - Sealing mechanism of pressure chamber and transmission case of vacuum water diversion device of fire pump - Google Patents
Sealing mechanism of pressure chamber and transmission case of vacuum water diversion device of fire pump Download PDFInfo
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- CN101493096B CN101493096B CN2009100252162A CN200910025216A CN101493096B CN 101493096 B CN101493096 B CN 101493096B CN 2009100252162 A CN2009100252162 A CN 2009100252162A CN 200910025216 A CN200910025216 A CN 200910025216A CN 101493096 B CN101493096 B CN 101493096B
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- pressure chamber
- transmission case
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Abstract
A sealing mechanism of a pressure chamber and a transmission case of a fire pump vacuum priming device belongs to the technical field of fire fighting equipment. The sealing mechanism comprises a left and a right protecting covers, a left and a right sealing rings, and a rotating seal ring, wherein, the left and the right protecting covers are oppositely arranged on a transmission shaft, a left sealing ring groove and a self lubricating oil cavity are formed in a containing cavity of the left protecting cover, the left sealing ring is arranged inside the left sealing ring groove, and oil sinks are arranged on the outer wall of the left sealing ring at intervals and communicated with the self lubricating oil cavity; a right sealing ring groove is formed in a containing cavity of the right protecting cover, and the right sealing ring is arranged inside the right sealing ring groove and is corresponding to the right sealing ring; the rotating seal ring is arranged on the transmission shaft and positioned between the left and the right sealing rings, wherein, one side of the rotating seal ring is contacted with the left sealing ring, while the other side is contacted with the right sealing ring, and the outer wall along the circumferencial direction of the rotating seal ring is corresponding to the self lubricating oil cavity. The sealing mechanism has the advantage that the sealing elements can not be damaged by the dry friction.
Description
Technical field
The invention belongs to the fire-fighting equipment technical field, be specifically related to a kind of pressure chamber of vacuum water diversion device of fire pump and the sealing mechanism of transmission case intersection.
Background technique
As the industry's knowledge of the reason, as vacuum water diversion device of fire pump, must implement sealing between pressure chamber and transmission case, specifically be one group of oil sealing to be set on the transmission shaft of transmission case or to take mechanical seal.No matter yet be to adopt oil sealing or mechanical seal all to have sealed member to change frequent problem.Theoretically, only can reach sealing effect with one group of oil sealing, because enter normal working stage at transmission case, the water of being drawn by the pressure chamber can play the effect of water lubrication to Sealing, but in the job initiation stage of vacuum water diversion device of fire pump, because water is not drawn as yet, there is dry friction in Sealing, thereby makes seal failure.Therefore how avoiding the dry friction of seal surface (junction plane) and use the protection Sealing is the technical problem of industry concern and phase getting solution all the time.
Summary of the invention
Task of the present invention is to provide a kind of and can anti-seal effectively suffers dry friction and cause the pressure chamber of vacuum water diversion device of fire pump of damage and the sealing mechanism of transmission case intersection.
Task of the present invention is finished like this, the sealing mechanism of a kind of pressure chamber of vacuum water diversion device of fire pump and transmission case intersection, it comprises sealing rotating ring and left and right protecting cover and the left and right seal ring that is located on the transmission shaft opposite each other on the transmission shaft that is located at transmission case, constitute the selflubricating oil pocket that a left closure gasket groove and communicates with oil hole in the cavity volume of described left protecting cover, described left seal ring is located in the left closure gasket groove, and the spaced apart oil groove that is provided with on the outer wall of left seal ring, oil groove communicates with the selflubricating oil pocket; Constitute a right closure gasket groove in the cavity volume of described right protecting cover, it is interior and corresponding with described left seal ring that described right seal ring is located at right closure gasket groove; Described sealing rotating ring is located on the described transmission shaft and between described left and right seal ring, wherein, one side of sealing rotating ring contacts with left seal ring, and opposite side contacts with right seal ring, and the outer wall of the circumferencial direction of sealing rotating ring is corresponding with described selflubricating oil pocket.
In a specific embodiment of the present invention, be concaved with first spring base hole on the bottom land wall of described left closure gasket groove, be provided with first spring in first spring base hole, and offer one first annular groove on the outer wall of left seal groove, be provided with first snap ring in first annular groove, one side of described left seal ring contacts with first spring, and opposite side is corresponding with first snap ring and spacing by first snap ring.
In another specific embodiment of the present invention, on the position of the inclined to one side end of the outer wall of described left protecting cover, be provided with one first seal ring.
Go back in the specific embodiment of the present invention, be concaved with one second spring base hole on the bottom land wall of described right closure gasket groove, be provided with second spring in second spring base hole, and offer second annular groove on the outer wall of right seal groove, be provided with second snap ring in second annular groove, one side of described right seal ring contacts with second spring, and opposite side is corresponding with second snap ring and spacing by second snap ring.
In another specific embodiment of the present invention, on the intermediate portion of the outer wall of described right protecting cover, be provided with one second seal ring.
In another specific embodiment of the present invention, described left seal ring constitutes a first step towards a side of sealing rotating ring, and first surface of contact of first step contacts with first sealed friction surface on the described sealing rotating ring.
More of the present invention and in specific embodiment, described right seal ring constitutes a second step towards a side of sealing rotating ring, second surface of contact of second step contacts with second sealed friction surface of described sealing rotating ring.
In of the present invention and then specific embodiment, constitute left protecting cover seat on the described transmission shaft, described left protecting cover is located on the left protecting cover seat.
Of the present invention again more and in specific embodiment, offer seal groove on the described transmission shaft, be provided with the 3rd seal ring in the seal groove, and the 3rd seal ring contacts with the outer wall of described sealing rotating ring.
In again of the present invention and then specific embodiment, on described transmission shaft, be provided with thread, on thread, dispose tightening nut.
Technological scheme provided by the present invention is owing to making left protecting cover constitute a selflubricating oil pocket and providing lubricant oil by the selflubricating oil pocket to left and right seal ring and the sealing rotating ring between left and right seal ring, make the sealing rotating ring have the effect of selflubricating, thereby can not produce the dry friction phenomenon of Sealing and cause damage.
Description of drawings
Fig. 1 is one embodiment of the invention structural drawing.
Fig. 2 is the sectional view after Fig. 1 assembling.
Fig. 3 is the location status schematic representation of the present invention on vacuum water diversion device of fire pump.
Embodiment
Ask for an interview Fig. 1 and Fig. 2, on the axis body of the pressure chamber 8 of vacuum water diversion device of fire pump and the transmission shaft 3 of the intersection of transmission case 7 (Fig. 3 shows), a left side is set in the mode that corresponds to each other, right protecting cover 1,2, be processed with left closure gasket groove 11 in the inside of left protecting cover 1 and on the diapire of left closure gasket groove 11, be arranged with at interval and constitute first spring base hole 111, insert an end of first spring 1111 in each first spring base hole 111, and the left surface of the other end of first spring 1111 and left seal ring 4 is (with present Fig. 1, location status shown in Figure 2 is an example, as follows) contact, apply to the right thrust by 1111 pairs of left seal rings 4 of first spring.On the outer wall of left closure gasket groove 11, offer together first annular groove 112, first snap ring 1121 be set in this first annular groove 112, by 1121 pairs of left seal rings 4 of first snap ring do to move right spacing.In the inside of left protecting cover 1 and corresponding to the right side of aforesaid left closure gasket groove 11 or claim that right-hand member constitutes selflubricating oil pocket 12, this selflubricating oil pocket 12 communicates with oil hole 13 on being opened in left protecting cover 1, in addition, on the outer wall of left protecting cover 1 and an inclined to one side end be provided with first seal ring 14, this first seal ring 14 can play the effect that prevents that lubricant oil from oozing out effectively.
Be processed with right closure gasket groove 21 in the inside of right protecting cover 2 and on the diapire of right closure gasket groove 21, be concaved with second spring base hole 211 at interval, insert an end of second spring 2111 in each second spring base hole 211, and the other end of second spring 2111 contacts with the right flank of right seal ring 5, applies left thrust by 2111 pairs of right seal rings 5 of second spring.In second annular groove, 212, the second annular grooves 212 second snap ring 2121 is set offering on the outer wall of right closure gasket groove 21 together, does spacing to left movement by 2121 pairs of right seal rings 5 of second snap ring.In addition, on the outer wall of right protecting cover 2 and the middle part that is in the length direction of right protecting cover 2 substantially be provided with one second seal ring 22, this second seal ring 22 can prevent effectively that lubricant oil from oozing out.
Left side seal ring 4 is positioned at left closure gasket groove 11, outer wall offers oil groove 41, oil groove 41 communicates with oil hole 13, more particularly communicate with selflubricating oil pocket 12, constitute a first step 42 at 4 ends towards sealing rotating ring 6 of left seal ring, first surface of contact 421 of first step 42 is that right flank contacts with first sealed friction surface 61 of sealing rotating ring 6.On the inwall of an end of left seal ring 4, also be provided with one the 4th seal ring, 43, the four seal rings 43 and implement sealing with the inwall of left closure gasket groove 11.5 ends towards sealing rotating ring 6 of right seal ring constitute a second step 51, and second surface of contact 511 of second step 51 is that left surface contacts with second sealed friction surface 62 of sealing rotating ring 6.On the inwall of an end of right seal ring 5, also be provided with the 5th seal ring 52, the five seal rings 52 and implement sealing with the inwall of right closure gasket groove 21.
Still ask for an interview Fig. 1 and Fig. 2, on transmission shaft 3, constitute left protecting cover seat 31, seal groove 32 and thread 33, aforesaid left protecting cover 1 is positioned on the left protecting cover seat 31, the 3rd seal ring 321 is set in seal groove 32, the 3rd seal ring 321 contacts with sealing rotating ring 6, and the position of right protecting cover 2 on transmission shaft 3 and left protecting cover 1 are corresponding and cooperate threads 33 to implement to locate by means of tightening nut 331.By Fig. 2 finding, because the existence of selflubricating oil pocket 12, can implement selflubricating to left and right seal ring 4,5 and sealing rotating ring 6, so, between first sealed friction surface 61 of first surface of contact 421 of the first step 42 of left side seal ring 4 and sealing rotating ring 6 dry friction can not appear, thereby can not damage because of heating, in like manner, dry friction can not appear between second sealed friction surface 62 of second surface of contact 511 of the second step 51 of right seal ring 5 and sealing rotating ring 6 yet.
Ask for an interview Fig. 3, provided and the identical vacuum water diversion device of fire pump of prior art, by pressure chamber 8 and transmission case 7 mutually assembly form, uniquely different be: on the transmission shaft 3 at pressure chamber 8 and the position, boundary of transmission case 7, adopted by previously described and by the transmission shaft sealing mechanism of meaning illustrated in figures 1 and 2.
Claims (10)
1. the sealing mechanism of the pressure chamber of a vacuum water diversion device of fire pump and transmission case intersection, it is characterized in that it comprises a sealing rotating ring (6) and a left side that is located on the transmission shaft (3) opposite each other on the transmission shaft (3) that is located at transmission case, right protecting cover (1,2) and a left side, right seal ring (4,5), constitute a left closure gasket groove (11) and a selflubricating oil pocket (12) that communicates with oil hole (13) in the cavity volume of described left protecting cover (1), described left seal ring (4) is located in the left closure gasket groove (11), and the spaced apart oil groove (41) that is provided with on the outer wall of left seal ring (4), oil groove (41) communicates with selflubricating oil pocket (12); Constitute a right closure gasket groove (21) in the cavity volume of described right protecting cover (2), it is interior and corresponding with described left seal ring (4) that described right seal ring (5) is located at right closure gasket groove (21); Described sealing rotating ring (6) is located on the described transmission shaft (3) and is positioned between the described left and right seal ring (4,5), wherein, one side of sealing rotating ring (6) contacts with left seal ring (4), and opposite side contacts with right seal ring (5), and the outer wall of the circumferencial direction of sealing rotating ring (6) is corresponding with described selflubricating oil pocket (12).
2. the sealing mechanism of the pressure chamber of vacuum water diversion device of fire pump according to claim 1 and transmission case intersection, it is characterized in that being concaved with first spring base hole (111) on the bottom land wall of described left closure gasket groove (11), be provided with first spring (1111) in first spring base hole (111), and offer one first annular groove (112) on the outer wall of left seal groove (11), be provided with first snap ring (1121) in first annular groove (112), one side of described left seal ring (4) contacts with first spring (1111), and opposite side is corresponding with first snap ring (1121) and spacing by first snap ring (1121).
3. the sealing mechanism of the pressure chamber of vacuum water diversion device of fire pump according to claim 1 and transmission case intersection is characterized in that being provided with one first seal ring (14) on the position of the inclined to one side end of outer wall of described left protecting cover (1).
4. the sealing mechanism of the pressure chamber of vacuum water diversion device of fire pump according to claim 1 and transmission case intersection, it is characterized in that being concaved with one second spring base hole (211) on the bottom land wall of described right closure gasket groove (21), be provided with second spring (2111) in second spring base hole (211), and offer second annular groove (212) on the outer wall of right seal groove (21), be provided with second snap ring (2121) in second annular groove (212), one side of described right seal ring (5) contacts with second spring (211), and opposite side is corresponding with second snap ring (2121) and spacing by second snap ring (2121).
5. the sealing mechanism of the pressure chamber of vacuum water diversion device of fire pump according to claim 1 and transmission case intersection is characterized in that being provided with one second seal ring (22) on the intermediate portion of the outer wall of described right protecting cover (2).
6. the sealing mechanism of the pressure chamber of vacuum water diversion device of fire pump according to claim 1 and transmission case intersection, it is characterized in that described left seal ring (4) constitutes a first step (42) towards a side of sealing rotating ring (6), first surface of contact (421) of first step (42) contacts with first sealed friction surface (61) on the described sealing rotating ring (6).
7. the sealing mechanism of the pressure chamber of vacuum water diversion device of fire pump according to claim 1 and transmission case intersection, it is characterized in that described right seal ring (5) constitutes a second step (51) towards a side of sealing rotating ring (6), second surface of contact (511) of second step (51) contacts with second sealed friction surface (62) of described sealing rotating ring (6).
8. the sealing mechanism of the pressure chamber of vacuum water diversion device of fire pump according to claim 1 and transmission case intersection is characterized in that constituting left protecting cover seat (31) on the described transmission shaft (3), and described left protecting cover (1) is located on the left protecting cover seat (31).
9. the sealing mechanism of the pressure chamber of vacuum water diversion device of fire pump according to claim 1 and transmission case intersection, it is characterized in that offering on the described transmission shaft (3) seal groove (32), be provided with the 3rd seal ring (321) in the seal groove (32), and the 3rd seal ring (321) contacts with the outer wall of described sealing rotating ring (6).
10. according to the pressure chamber of claim 1 or 8 or 9 described vacuum water diversion device of fire pump and the sealing mechanism of transmission case intersection, it is characterized in that on described transmission shaft (3), being provided with thread (33), on thread (33), dispose tightening nut (331).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100252162A CN101493096B (en) | 2009-02-25 | 2009-02-25 | Sealing mechanism of pressure chamber and transmission case of vacuum water diversion device of fire pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100252162A CN101493096B (en) | 2009-02-25 | 2009-02-25 | Sealing mechanism of pressure chamber and transmission case of vacuum water diversion device of fire pump |
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| Publication Number | Publication Date |
|---|---|
| CN101493096A CN101493096A (en) | 2009-07-29 |
| CN101493096B true CN101493096B (en) | 2010-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009100252162A Active CN101493096B (en) | 2009-02-25 | 2009-02-25 | Sealing mechanism of pressure chamber and transmission case of vacuum water diversion device of fire pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9664289B2 (en) | 2012-06-06 | 2017-05-30 | General Electric Technology Gmbh | Pump sealing device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201354757Y (en) * | 2009-02-25 | 2009-12-02 | 张建明 | Sealing mechanism for pressure chamber and gear box of fire pump vacuum water diversion device |
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- 2009-02-25 CN CN2009100252162A patent/CN101493096B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201354757Y (en) * | 2009-02-25 | 2009-12-02 | 张建明 | Sealing mechanism for pressure chamber and gear box of fire pump vacuum water diversion device |
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| CN101493096A (en) | 2009-07-29 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Suzhou Jieda Fire-Protection Vehicle & Equipment Co., Ltd. Assignor: Zhang Jianming Contract record no.: 2011320000061 Denomination of invention: Sealing mechanism of pressure chamber and transmission case of vacuum water diversion device of fire pump Granted publication date: 20100623 License type: Exclusive License Open date: 20090729 Record date: 20110223 |
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| ASS | Succession or assignment of patent right |
Owner name: SUZHOU JIEDA FIRE-PROTECTION VEHICLE + EQUIPMENT C Free format text: FORMER OWNER: ZHANG JIANMING Effective date: 20150825 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150825 Address after: Suzhou Industrial Park Suzhou city Jiangsu province 215012 Tang Zhuang Road No. 180 Patentee after: Suzhou Jieda Fire-Protection Vehicle & Equipment Co., Ltd. Address before: 215562, Jiangsu, Changshou City Town, Shuang Bang village industrial park, Suzhou Jetta Fire Vehicle Equipment Co., Ltd. transferred Patentee before: Zhang Jianming |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Suzhou Industrial Park Suzhou city Jiangsu province 215012 Tang Zhuang Road No. 180 Patentee after: Jetta Fire Technology (Suzhou) Limited by Share Ltd Address before: Suzhou Industrial Park Suzhou city Jiangsu province 215012 Tang Zhuang Road No. 180 Patentee before: Suzhou Jieda Fire-Protection Vehicle & Equipment Co., Ltd. |