CN1824956A - Axial parking sealing device - Google Patents
Axial parking sealing device Download PDFInfo
- Publication number
- CN1824956A CN1824956A CN 200610050098 CN200610050098A CN1824956A CN 1824956 A CN1824956 A CN 1824956A CN 200610050098 CN200610050098 CN 200610050098 CN 200610050098 A CN200610050098 A CN 200610050098A CN 1824956 A CN1824956 A CN 1824956A
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- China
- Prior art keywords
- pump cover
- pressure ring
- impeller
- propeller
- sub
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Abstract
An axial seal device includes a main shaft, an impeller, a division plate, a secondary impeller, a pump cover and a seal sleeve. The impeller, the secondary impeller and the seal sleeve are fixed on the main shaft via keys and impeller nuts. A sealed cavity is made up of the division plate and the pump cover. A transmission wedge wheel located between the secondary impeller and the seal cover is connected with the main shaft. A sealing ring is sleeved outside the transmission wedge wheel. An oblique wedge piece located in a diamond groove is set outside the transmission wedge wheel. The diamond groove is disposed inside the sealing ring.
Description
Technical field
The present invention relates to a kind of seal arrangement, especially a kind of axial parking sealing device that is used for industrial pump medium sealings such as petrochemical industry, light industry.
Background technique
The sealing configuration that uses in the present various pump generally adopts mechanical seal and packing seal dual mode.Mechanical seal often adopts closely cooperating of dynamic and static ring end face to realize sealing, and in use, corrosive fluid infiltrates dynamic and static ring end face slit inevitably, cause the damage of end face, so its sealing effect is bad, and working life is short.And when adopting packing seal, the character of filler self has determined its vulnerability, and in use takes its degree of tightness of normal adjustment, uses inconveniently, careless slightlyly also can burn filler.Thereby the sealing effect of above dual mode is all bad, and working life is not long.In addition, some adopt the sealing configuration of dynamic seal to have the following disadvantages: the shutdown sealing effect is bad, shuts down back liquid and reveals easily, is not suitable for the occasion of frequent starting.
Summary of the invention
The present invention will solve the shortcoming of above-mentioned prior art, and a kind of axial parking sealing device of simple in structure, good sealing effect is provided.
The present invention solves the technological scheme that its technical problem adopts: this axial parking sealing device, comprise main shaft, impeller, dividing plate, sub-propeller, pump cover, stuffing box gland, wherein, impeller, sub-propeller, stuffing box gland is fixed on the main shaft by key and impeller nut, dividing plate, pump cover is formed envelope and is pressed the chamber, also be connected with transmission wedge wheel on the main shaft, this transmission wedge wheel is between sub-propeller back blade and stuffing box gland, and its outside is socketed with the envelope pressure ring, the front end of this envelope pressure ring is enclosed within on the sub-propeller back blade in ground free to rotate mode, envelope pressure ring rear end and stuffing box gland, be lined with first sealing gasket between the pump cover respectively, second sealing gasket; The transmission wedge wheel outside is provided with the wedge sheet, and the inboard of envelope pressure ring is provided with the rhombus groove that is complementary with this wedge sheet, and the wedge sheet is positioned at the rhombus groove, and leaves the gap between the two.
The present invention can be further perfect by following manner:
The envelope pressure ring outside is provided with non-return key, and the inboard of pump cover is provided with the pump cover groove that is complementary with this non-return key, and non-return key is positioned at this pump cover groove, and the pump cover groove leaves for the axially movable gap of non-return key.
Be provided with the unidirectional key that makes envelope pressure ring one-way rotation in the pump cover groove, this unidirectional key cooperates with described non-return key.
Be lined with the 3rd sealing gasket between sub-propeller and the transmission wedge wheel.
Be lined with the 4th sealing gasket between impeller and the sub-propeller.
Be lined with the 5th sealing gasket between transmission wedge wheel and the stuffing box gland.
The effect that the present invention is useful is: transmission wedge of the present invention wheel and envelope pressure ring cooperate, and can effectively realize shutting down sealing, have simple in structure, sealing is reliable, long service life, the advantage of not leaking substantially.
Description of drawings
Fig. 1 is the main cross-sectional view of looking of the present invention;
Fig. 2 is that the master of impeller of the present invention looks cross-sectional view;
Fig. 3 is that the master of stuffing box gland of the present invention looks cross-sectional view;
Fig. 4 is that the master of dividing plate of the present invention looks cross-sectional view;
Fig. 5 is that the master of the anti-pivoted housing of the present invention looks cross-sectional view;
Fig. 6 is the left TV structure schematic representation of the anti-pivoted housing of the present invention;
Fig. 7 is that the master of impeller nut of the present invention looks and partly cuts open structural representation;
Fig. 8 is that the master of sub-propeller of the present invention looks cross-sectional view;
Fig. 9 is the right TV structure schematic representation of sub-propeller of the present invention;
Figure 10 is that the master of pump cover of the present invention looks cross-sectional view;
Figure 11 is the left TV structure schematic representation of pump cover of the present invention;
Figure 12 is that the master of transmission wedge wheel of the present invention looks cross-sectional view;
Figure 13 is the left TV structure schematic representation of transmission wedge wheel of the present invention;
Figure 14 is the plan structure schematic representation of transmission wedge wheel of the present invention;
Figure 15 is the main TV structure schematic representation that the present invention seals pressure ring;
Figure 16 is the right TV structure schematic representation that the present invention seals pressure ring;
Figure 17 is that A-A among Figure 16 is to the sectional structure schematic representation.
Description of reference numerals: stuffing box gland 1, the first sealing gasket 1-1, the 5th sealing gasket 2, transmission wedge wheel 3, wedge sheet 3-1, the 3rd sealing gasket 4, envelope pressure ring 5, rhombus groove 5-1, non-return key 5-2, pump cover 6, pump cover groove 6-1, the second sealing gasket 6-2, unidirectional key 6-11, dividing plate 7, sub-propeller 8, impeller 9, anti-pivoted housing 10, impeller nut 11, main shaft 12, the four sealing gaskets 13.
Embodiment
The invention will be further described below in conjunction with accompanying drawing:
This axial parking sealing device comprises main shaft 12, impeller 9, dividing plate 7, sub-propeller 8, pump cover 6, stuffing box gland 1, and wherein, impeller 9, sub-propeller 8, stuffing box gland 1 are fixed on the main shaft 12 by key and impeller nut 11, changes together with main shaft 12.Dividing plate 7, pump cover 6 are formed envelope and are pressed the chamber, also be connected with transmission wedge wheel 3 on the main shaft 12, this transmission wedge wheel 3 is between sub-propeller 8 back blades and stuffing box gland 1, and its outside is socketed with envelope pressure ring 5, the front end of this envelope pressure ring 5 is enclosed within on sub-propeller 8 back blades in ground free to rotate mode, is lined with the first sealing gasket 1-1, the second sealing gasket 6-2 respectively between envelope pressure ring 5 rear ends and stuffing box gland 1, the pump cover 6; The transmission wedge is taken turns 3 outsides and is provided with wedge sheet 3-1, and the inboard of envelope pressure ring 5 is provided with the rhombus groove 5-1 that is complementary with this wedge sheet 3-1, and wedge sheet 3-1 is positioned at rhombus groove 5-1, and leaves the gap between the two.Envelope pressure ring 5 outsides are provided with non-return key 5-2, and the inboard of pump cover 6 is provided with the pump cover groove 6-1 that is complementary with this non-return key 5-2, and non-return key 5-2 is positioned at this pump cover groove 6-1, and pump cover groove 6-1 leaves the axially movable gap for non-return key 5-2.The distance that moves axially of envelope pressure ring 5 is promptly sealed the gap of pressure ring non-return key 5-2 in pump cover groove 6-1.Be provided with the unidirectional key 6-11 that makes envelope pressure ring 5 one-way rotation in the pump cover groove 6-1, this unidirectional key 6-11 cooperates with non-return key 5-2.Therefore, the axle of this structure can not backward rotation, otherwise will damage pump cover 6 and seal pressure ring 5.Be lined with the 3rd sealing gasket 4 between sub-propeller 8 and the transmission wedge wheel 3.Be lined with the 4th sealing gasket 13 between impeller 9 and the sub-propeller 8.
With reference to Fig. 1: principle of the present invention is: when pump turns round, because impeller 9 back blades lower the pressure of pump chamber, reach balancing axial thrust and prevent that the material from entering the purpose of seal arrangement.During main shaft 12 rotations, 3 liang of wedge sheet 3-1 of transmission wedge wheel are pressed to the rhombus groove 5-1 of envelope pressure ring 5, will seal pressure ring 5 by the inclined-plane and push front (i.e. the left side on the figure) driven rotary to, and envelope pressure ring 5 ear end faces and first sealing gasket 2, second sealing gasket 14 disengage.At this moment, because the pressure head that impeller 9 back blades and sub-propeller 8 its same-actions produce withstands the highly pressurised liquid of impeller 9 outlets, make pump when work, liquid that can not leaks.When the pump stall, transmission wedge wheel 3 stops operating, but because effect of inertia, make envelope pressure ring 5 can also rotate a segment distance, the gap, inclined-plane increases between the two at this moment, but pump housing inner high voltage flow direction envelope is pressed the chamber, press to envelope pressure ring 5, because envelope pressure ring 5 front and back pressure reduction are, make envelope pressure ring 5 move (promptly move on the right side on figure) backward and press to the first sealing gasket 1-1, the second sealing gasket 6-2, two sealing gaskets leak liquid that can not.The first sealing gasket 1-1, the second sealing gasket 6-2 are carried by stuffing box gland 1, pump cover 6 respectively.The 3rd sealing gasket 4, the 4th sealing gasket 13, the 5th sealing gasket 2 can increase sealing effect.
The present invention is rational in infrastructure, using effect good, has solved the shutdown sealing problem effectively.And the main cooperation of when operation sealing by transmission wedge wheel 3 and envelope pressure ring 5, each components damage is few, rate of fault is low, working life big leap ahead.
Claims (6)
1, a kind of axial parking sealing device, comprise main shaft (12), impeller (9), dividing plate (7), sub-propeller (8), pump cover (6), stuffing box gland (1), wherein, impeller (9), sub-propeller (8), stuffing box gland (1) is fixed on the main shaft (12) by key and impeller nut (11), dividing plate (7), pump cover (6) is formed envelope and is pressed the chamber, it is characterized in that: also be connected with transmission wedge wheel (3) on the described main shaft (12), this transmission wedge wheel (3) is positioned between sub-propeller (8) back blade and the stuffing box gland (1), and its outside is socketed with envelope pressure ring (5), the front end of this envelope pressure ring (5) is enclosed within on sub-propeller (8) back blade in ground free to rotate mode, envelope pressure ring (5) rear end and stuffing box gland (1), be lined with first sealing gasket (1-1) between the pump cover (6) respectively, second sealing gasket (6-2); Transmission wedge wheel (3) outside is provided with wedge sheet (3-1), and the inboard of envelope pressure ring (5) is provided with the rhombus groove (5-1) that is complementary with this wedge sheet (3-1), and wedge sheet (3-1) is positioned at rhombus groove (5-1), and leaves the gap between the two.
2, axial parking sealing device according to claim 1, it is characterized in that: described envelope pressure ring (5) outside is provided with non-return key (5-2), the inboard of pump cover (6) is provided with the pump cover groove (6-1) that is complementary with this non-return key (5-2), non-return key (5-2) is positioned at this pump cover groove (6-1), and pump cover groove (6-1) leaves for the axially movable gap of non-return key (5-2).
3, axial parking sealing device according to claim 2 is characterized in that: be provided with the unidirectional key (6-11) that makes envelope pressure ring (5) one-way rotation in the described pump cover groove (6-1), this unidirectional key (6-11) cooperates with described non-return key (5-2).
4, according to claim 1,2 or 3 described axial parking sealing devices, it is characterized in that: be lined with the 3rd sealing gasket (4) between described sub-propeller (8) and the transmission wedge wheel (3).
5, according to claim 1,2 or 3 described axial parking sealing devices, it is characterized in that: be lined with the 4th sealing gasket (13) between described impeller (9) and the sub-propeller (8).
6, according to claim 1,2 or 3 described axial parking sealing devices, it is characterized in that: be lined with the 5th sealing gasket (2) between described transmission wedge wheel (3) and the stuffing box gland (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610050098 CN1824956A (en) | 2006-03-29 | 2006-03-29 | Axial parking sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610050098 CN1824956A (en) | 2006-03-29 | 2006-03-29 | Axial parking sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1824956A true CN1824956A (en) | 2006-08-30 |
Family
ID=36935758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610050098 Pending CN1824956A (en) | 2006-03-29 | 2006-03-29 | Axial parking sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1824956A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821729A (en) * | 2014-03-06 | 2014-05-28 | 安徽嘉成泵业有限责任公司 | Cavity lock type zero leakage shaft seal slurry pump |
-
2006
- 2006-03-29 CN CN 200610050098 patent/CN1824956A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821729A (en) * | 2014-03-06 | 2014-05-28 | 安徽嘉成泵业有限责任公司 | Cavity lock type zero leakage shaft seal slurry pump |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |