CN2893250Y - Axial parking sealing device - Google Patents
Axial parking sealing device Download PDFInfo
- Publication number
- CN2893250Y CN2893250Y CN 200620102188 CN200620102188U CN2893250Y CN 2893250 Y CN2893250 Y CN 2893250Y CN 200620102188 CN200620102188 CN 200620102188 CN 200620102188 U CN200620102188 U CN 200620102188U CN 2893250 Y CN2893250 Y CN 2893250Y
- Authority
- CN
- China
- Prior art keywords
- pump cover
- sealing
- impeller
- pressure ring
- propeller
- 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
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 60
- 230000005540 biological transmission Effects 0.000 claims abstract description 25
- 210000004907 gland Anatomy 0.000 claims description 17
- 230000000295 complement effect Effects 0.000 claims description 6
- 229910003460 diamond Inorganic materials 0.000 abstract 2
- 239000010432 diamond Substances 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 8
- 239000007788 liquid Substances 0.000 description 4
- 230000009977 dual effect Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Landscapes
- Sealing Devices (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses an axial parking seal device, which comprises a principal axis, an impeller, a baffle plate, an auxiliary impeller, a pump cover and a seal sleeve, wherein the auxiliary impeller and the seal sleeve are all fixed on the principal axis by key and impeller nut, while the baffle plate and the pump cover are combined into a sealing and pressing cavity. The principal axis is also connected with a transmission wedge wheel that is arranged between the reverse blade of the auxiliary impeller and the seal sleeve and whose external side is covered with a sealing and pressing ring. The front part of the sealing and pressing ring is covered on the reverse blade of the auxiliary impeller in a free rotation form, while a first gasket and a second gasket are respectively matted between the rear part of the sealing and pressing ring, the seal sleeve and the pump cover; and the external side of the transmission wedge wheel is provided with an inclined wedge and the internal side of the sealing and pressing ring is provided with a diamond groove that is matched with the inclined wedge that is arranged in the diamond groove with a certain clearance. The utility model has the advantages of that the matching of the transmission wedge wheel and the sealing and pressing ring can effectively realize seal by stopping the machine and the utility model is provided with simple structure, reliable seal, long service life and basically no leakage.
Description
Technical field
The utility model 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 utility model 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 utility model 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 utility model 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 utility model is useful is: the utility model transmission wedge 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 that the utility model master looks cross-sectional view;
Fig. 2 is that the master of the utility model impeller looks cross-sectional view;
Fig. 3 is that the master of the utility model stuffing box gland looks cross-sectional view;
Fig. 4 is that the master of the utility model dividing plate looks cross-sectional view;
Fig. 5 is that the master of the anti-pivoted housing of the utility model looks cross-sectional view;
Fig. 6 is the left TV structure schematic representation of the anti-pivoted housing of the utility model;
Fig. 7 is that the master of the utility model impeller nut looks and partly cuts open structural representation;
Fig. 8 is that the master of the utility model sub-propeller looks cross-sectional view;
Fig. 9 is the right TV structure schematic representation of the utility model sub-propeller;
Figure 10 is that the master of the utility model pump cover looks cross-sectional view;
Figure 11 is the left TV structure schematic representation of the utility model pump cover;
Figure 12 is that the master of the utility model transmission wedge wheel looks cross-sectional view;
Figure 13 is the left TV structure schematic representation of the utility model transmission wedge wheel;
Figure 14 is the plan structure schematic representation of the utility model transmission wedge wheel;
Figure 15 is the main TV structure schematic representation of the utility model envelope pressure ring;
Figure 16 is the right TV structure schematic representation of the utility model envelope 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 utility model is described in further detail 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 utility model 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 utility model 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 200620102188 CN2893250Y (en) | 2006-03-29 | 2006-03-29 | Axial parking sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620102188 CN2893250Y (en) | 2006-03-29 | 2006-03-29 | Axial parking sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2893250Y true CN2893250Y (en) | 2007-04-25 |
Family
ID=38061412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620102188 Expired - Lifetime CN2893250Y (en) | 2006-03-29 | 2006-03-29 | Axial parking sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2893250Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321948A (en) * | 2013-06-21 | 2013-09-25 | 武汉聿桥泵业科技有限公司 | Shutdown sealing structure for moving ring and static ring automatic separation and reunion type pump |
-
2006
- 2006-03-29 CN CN 200620102188 patent/CN2893250Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321948A (en) * | 2013-06-21 | 2013-09-25 | 武汉聿桥泵业科技有限公司 | Shutdown sealing structure for moving ring and static ring automatic separation and reunion type pump |
| CN103321948B (en) * | 2013-06-21 | 2015-07-08 | 武汉聿桥泵业科技有限公司 | Shutdown sealing structure for moving ring and static ring automatic separation and reunion type pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hangzhou Pump Co. Ltd. Assignor: Chen Qian Contract fulfillment period: 2007.5.6 to 2012.5.6 Contract record no.: 2008330001939 Denomination of utility model: Axial parking sealing device Granted publication date: 20070425 License type: Exclusive license Record date: 20081112 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2007.5.6 TO 2012.5.6; CHANGE OF CONTRACT Name of requester: HANGZHOU ALKALI PUMP CO., LTD. Effective date: 20081112 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20070425 |
|
| EXPY | Termination of patent right or utility model |