CN201963587U - Impeller sealing device - Google Patents
Impeller sealing device Download PDFInfo
- Publication number
- CN201963587U CN201963587U CN201120063945XU CN201120063945U CN201963587U CN 201963587 U CN201963587 U CN 201963587U CN 201120063945X U CN201120063945X U CN 201120063945XU CN 201120063945 U CN201120063945 U CN 201120063945U CN 201963587 U CN201963587 U CN 201963587U
- Authority
- CN
- China
- Prior art keywords
- impeller
- sealing arrangement
- bonnet
- impeller sealing
- flies
- 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 - Fee Related
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Abstract
The utility model relates to an impeller sealing device which comprises a shaft and a shaft sleeve sheathed out of the shaft, wherein a main impeller is arranged on the shaft. The impeller sealing device is characterized in that a back blade is arranged at the back of the main impeller, a separation plate is arranged at the back side of the back blade, the separation plate is internally provided with a subsidiary impeller, and a movable ring is arranged on the subsidiary impeller. Meanwhile, a movable ring seat is arranged on the movable ring, an elastic component is arranged on a contact surface between the movable ring seat and the shaft sleeve, and the back side of the movable ring seat is connected with a thrust disc. Furthermore, the back end of the separation plate is provided with a back cover, and one side of the back cover is provided with a fly block component. Therefore, when a pump runs, no machinery part can be worn, so that the seal service life of the pump is greatly prolonged.
Description
Technical field
The utility model relates to a kind of match equipment of pump, relates in particular to a kind of impeller sealing arrangement.
Background technique
The traditional rotating shaft sealing of centrifugal pump was mechanical seal or packing seal in the past.Be higher than fouling or contain under the medium situation of solid phase impurity in conveying, because solid particle enter sealing, lose floating compensation performance and a large amount of phenomenons of leaking for high the causing of mechanical seal, then aggravate the wearing and tearing of filler and axle sleeve, also increased the leakage of liquid for packing seal.The leakage of medium makes solid particle be deposited on the seal surface of mutual friction in a large number again, and further aggravation wearing and tearing cause vicious circle.
The model utility content
The purpose of this utility model is to overcome the above problem that prior art exists, and a kind of impeller sealing arrangement is provided.
For realizing the purpose of this utility model impeller sealing arrangement, impeller sealing arrangement includes axle, described outer shaft sleeve is provided with axle sleeve, and axle is provided with main impeller, and wherein: the back side of described main impeller is provided with back blade, and described back blade rear side is provided with dividing plate; Be provided with sub-propeller in the described dividing plate, described sub-propeller is provided with rotating ring; Described rotating ring is provided with rotating seat, and the surface of contact of rotating seat and axle sleeve is provided with elastic component; Described rotating seat rear side is connected with thrust disc; Described dividing plate rear end is provided with bonnet; Described bonnet one side is provided with and flies block assembly.
Further, above-mentioned impeller sealing arrangement, wherein, the described block assembly that flies includes and flies piece, and a described end that flies piece contacts with bonnet, and a described end that flies piece is fixedly mounted on the axle sleeve by pin.
Further, above-mentioned impeller sealing arrangement wherein, is provided with seal ring between described sub-propeller and the rotating ring.
Further, above-mentioned impeller sealing arrangement, wherein, described elastic component is a spring.
Further, above-mentioned impeller sealing arrangement wherein, is extended with the drainage pipe on the described bonnet.
Again further, above-mentioned impeller sealing arrangement wherein, is distributed with leakage opening on the described drainage pipe.
Adopt technical solutions of the utility model, when pump turns round, do not have the friction of mechanical parts, thereby improved the sealing life of pump greatly.
The purpose of this utility model, advantage and characteristics will illustrate by following preferential embodiment's non-limitative illustration and explain that these embodiments only provide as an example with reference to accompanying drawing.
Description of drawings
Fig. 1 is the organigram of this impeller sealing arrangement.
The implication of each reference character is as follows among the figure:
1 main impeller, 2 back blades
3 stator blades, 4 sub-propellers
5 dividing plates, 6 bonnets
7 rotating rings, 8 seal rings
9 thrust discs 10 fly piece
11 pins, 12 axle sleeves
13 springs, 14 rotating seats
15 leakage openings, 16 drainage pipes
17
Embodiment
Impeller sealing arrangement as shown in Figure 1, include axle 17, these axle 17 outer axle sleeves 12 that are arranged with, and axle 17 is provided with main impeller 1, its unusual part is: the back side of main impeller that the utility model adopts 1 is provided with back blade 2, back blade 2 rear sides are provided with dividing plate 5, and between back blade 2 and the dividing plate 5 0.5～1 mm clearance are set.Simultaneously, be provided with sub-propeller 4 in dividing plate 5, sub-propeller 4 is provided with rotating ring 7.Further, rotating ring 7 is provided with rotating seat 14, and the surface of contact of rotating seat 14 and axle sleeve 12 is provided with spring 13 as elastic component, and rotating seat 14 rear sides are connected with thrust disc 9.Again further.Dividing plate 5 rear ends that the utility model adopted are provided with bonnet 6, and sub-propeller 4 has 0.5～1 mm clearance with bonnet 6.Be provided with in bonnet 6 one sides and fly piece 10 assemblies.
In conjunction with the utility model one preferred implementation, consider the smooth and easy of running, described piece 10 assemblies that fly include and fly piece 10.Specifically, the end that lid flies piece 10 contacts with bonnet 6, and an end that flies piece 10 is fixedly mounted on the axle sleeve 12 by pin 11.And,, between sub-propeller 4 and rotating ring 7, be provided with seal ring 8 in order to improve whole sealing effect.
Further, consider follow-up function expansion, on bonnet 6, be extended with drainage pipe 16.Simultaneously, on drainage pipe 16, be distributed with leakage opening 15.
From implementation process of the present utility model, the magnitude of interference that flies the size of piece 10 quality, spring 13 power, rotating ring 7 sealing areas etc. and rotating ring 7 seal rings 8 depends on the rotating speed and axle sleeve 12 diameters of pump.Seal ring 8 can adopt rubber o-ring or polytetrafluoroethylene shaping ring according to corrosive medium, but should guarantee that magnitude of interference is in 0.1～0.3 scope.
Sealing principle of the present utility model and seal-moving process are such, and when pump rotated, back blade 2 and sub-propeller 4 produced a back pressure, block leak of liquid.The effect of stator blade 3 is the rotations that prevent sub-propeller 4 back liquid, thereby improves the sealing liquid ability of sub-propeller 4 sealings.When pump turns round, in sub-propeller Room 4, form the stable gas-liquid separating surface of a circle, do not leak thereby make pump reach one.But when pump stopped, back blade 2 and sub-propeller 4 lost back pressure because of not rotating, and the sealing of this moment relies on parking sealer.
Thus, when pump stops,, prevented the leakage of liquid because the effect of spring 13 power makes rotating ring 7 be adjacent to the sealing bonnet 6 of pump.When pump turns round, fly piece 10 and under action of centrifugal force, strut, back down thrust disc 9 and rotating seat 14, the sealing bonnet 6 of rotating ring 7 and pump is thrown off.
By above-mentioned character express also in conjunction with the accompanying drawings as can be seen, behind employing the utility model, when pump turns round, there is not the friction of mechanical parts, thereby improved the sealing life of pump greatly.
Certainly, more than only be concrete exemplary applications of the present utility model, protection domain of the present utility model is not constituted any limitation.In addition to the implementation, the utility model can also have other mode of execution.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop within the utility model scope required for protection.
Claims (6)
1. impeller sealing arrangement includes axle, and described outer shaft sleeve is provided with axle sleeve, and the axle be provided with main impeller, it is characterized in that: the back side of described main impeller is provided with back blade, described back blade rear side is provided with dividing plate; Be provided with sub-propeller in the described dividing plate, described sub-propeller is provided with rotating ring; Described rotating ring is provided with rotating seat, and the surface of contact of rotating seat and axle sleeve is provided with elastic component; Described rotating seat rear side is connected with thrust disc; Described dividing plate rear end is provided with bonnet; Described bonnet one side is provided with and flies block assembly.
2. impeller sealing arrangement according to claim 1 is characterized in that: the described block assembly that flies includes and flies piece, and a described end that flies piece contacts with bonnet, and a described end that flies piece is fixedly mounted on the axle sleeve by pin.
3. impeller sealing arrangement according to claim 1 is characterized in that: be provided with seal ring between described sub-propeller and the rotating ring.
4. impeller sealing arrangement according to claim 1 is characterized in that: described elastic component is a spring.
5. impeller sealing arrangement according to claim 1 is characterized in that: be extended with the drainage pipe on the described bonnet.
6. impeller sealing arrangement according to claim 5 is characterized in that: be distributed with leakage opening on the described drainage pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120063945XU CN201963587U (en) | 2011-03-11 | 2011-03-11 | Impeller sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120063945XU CN201963587U (en) | 2011-03-11 | 2011-03-11 | Impeller sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201963587U true CN201963587U (en) | 2011-09-07 |
Family
ID=44526122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120063945XU Expired - Fee Related CN201963587U (en) | 2011-03-11 | 2011-03-11 | Impeller sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201963587U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557164A (en) * | 2013-10-21 | 2014-02-05 | 沈阳建筑大学 | Pressure auto-balancing magnetic drive pump |
| CN104389807A (en) * | 2014-11-21 | 2015-03-04 | 中国成达工程有限公司 | Shaft seal structure of centrifugal coal slurry pump |
-
2011
- 2011-03-11 CN CN201120063945XU patent/CN201963587U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557164A (en) * | 2013-10-21 | 2014-02-05 | 沈阳建筑大学 | Pressure auto-balancing magnetic drive pump |
| CN104389807A (en) * | 2014-11-21 | 2015-03-04 | 中国成达工程有限公司 | Shaft seal structure of centrifugal coal slurry pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110907 Termination date: 20160311 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |