CN204226264U - A kind of novel seal axle - Google Patents
A kind of novel seal axle Download PDFInfo
- Publication number
- CN204226264U CN204226264U CN201420660038.7U CN201420660038U CN204226264U CN 204226264 U CN204226264 U CN 204226264U CN 201420660038 U CN201420660038 U CN 201420660038U CN 204226264 U CN204226264 U CN 204226264U
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- China
- Prior art keywords
- impeller
- seal
- stainless steel
- axle sleeve
- seal shaft
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Abstract
The utility model relates to centrifugal pumping apparatus field, be specifically related to a kind of novel seal axle, comprise seal shaft, be positioned at the impeller on seal shaft top and be positioned at the axle sleeve of outside, seal shaft front end, it is characterized in that: between impeller and the impeller nut of impeller tip, be provided with stainless steel gasket, the external diameter of described stainless steel gasket is greater than impeller nut external diameter 1-2mm, and internal diameter exceeds the outer 0.5-1.5mm of seal shaft spindle nose screw thread; The internal diameter oil resistant O type circle identical with profile ID and the stainless steel packing ring with the installation circular groove consistent size in axle sleeve is provided with between impeller with axle sleeve.The beneficial effects of the utility model are: energy-efficient, good seal performance, use safety, versatility and interchangeability are good, are applicable to promoting the use of.
Description
Technical field
The utility model relates to centrifugal pumping apparatus field, is specifically related to a kind of novel seal axle.
Background technique
Centrifugal pump is widely used in the fields such as chemical industry, oil, pharmacy, electric power, food, environmental protection, smelting, mine papermaking, oil tanker emptying, chemical fibre synthesis.Wherein, acid water pump in middleization Quanzhou petrochemical industry 380,000 tons/year of sulphur combined units can meet in chemical-process carries the viscosity that is corrosive to be similar to the liquid of water, the temperature of its fed sheet of a media is generally-20 to 120 degree, adopt suitable cooling method if desired, the medium temperature of conveying can more up to more than 200 degree.
(its model is 2813-P101AB to the acid water pump of 380000 tons/year of sulphur recovery combined units, the centrifugal pump of P102AB) there is design deficiency, after impeller nut locking wherein, be fixed between each workpiece that axle contacts with each other and just define static seal point, but due to design deficiency, on equipment between impeller and axle sleeve, very stiff and demanding contact is adopted between impeller with impeller nut, do not reach sealing effect, poisonous medium is caused to leak vertically from this position, two places, sulfide hydrogen in medium, easily cause operator poisoning, such equipment can not meet technique usage requirement completely, and there is great potential safety hazard.
Model utility content
For the deficiencies in the prior art, the utility model provides a kind of novel seal axle of energy-efficient, good seal performance, use safety.
The utility model discloses a kind of novel seal axle, comprise seal shaft, be positioned at the impeller on seal shaft top and be positioned at the axle sleeve of outside, seal shaft front end, stainless steel gasket is provided with between impeller and the impeller nut of impeller tip, the external diameter of described stainless steel gasket is greater than impeller nut external diameter 1-2mm, and internal diameter exceeds the outer 0.5-1.5mm of seal shaft spindle nose screw thread; The internal diameter oil resistant O type circle identical with profile ID and the stainless steel packing ring with the installation circular groove consistent size in axle sleeve is provided with between impeller with axle sleeve.
Preferred version is as follows:
Stainless steel gasket thickness is 1-2mm.The design of stainless steel gasket, the hard contact form before changing between impeller and impeller nut, adds static seal structure, efficiently solves the possibility that medium leaks from here.
The thickness 3.5-4mm of oil resistant O type circle.Guarantee seal shaft not contact medium, improve the life-span of seal shaft.When this part is installed, can not machine oil be smeared simultaneously, special lubricating grease or vaseline can only be smeared; The design of oil resistant O type circle and stainless steel packing ring changes the contact form between impeller and axle sleeve, achieves the soft contact between two workpiece, efficiently solves the possibility that medium leaks from here.
Meanwhile, in the course of working of this accessory, take into full account versatility and the interchangeability of accessory.On equipment seal shaft of the same type, can replace and adopt this novel seal axle.
Wherein, single-stage cantilever formula centrifugal pump is primarily of compositions such as the pump housing, pump cover, impeller, pump shaft and brackets.Bracket is built with the bearing of supporting pump rotor, and bearing, usually by oil lubrication in bracket, also can use grease lubrication.Gland seal device is generally packing seal or mechanical seal.Impeller generally has equalizing orifice, and in order to balancing axial thrust, residue axial force is born by bearing.Impeller, seal shaft and rolling bearing etc. are the rotor of pump, and bearing bracket the rotor part of pump.The radial force of rolling bearing bearing pump and the axial force of lack of equilibrium.
The beneficial effects of the utility model are: energy-efficient, good seal performance, use safety, versatility and interchangeability are good, are applicable to promoting the use of.
Accompanying drawing illustrates:
Fig. 1 is of the present utility model point of de-assembly schematic diagram.
In figure: 1, impeller nut, 2, impeller, 3, oil resistant O type circle, 4, stainless steel packing ring, 5, axle sleeve, 6, seal shaft, 7, stainless steel gasket.
Embodiment:
Below in conjunction with accompanying drawing 1, embodiment of the present utility model is described in further detail, but the utility model is not limited to specific embodiment.
Embodiment 1:
The utility model discloses a kind of novel seal axle, comprise seal shaft 6, be positioned at the impeller 2 on seal shaft 6 top and be positioned at the axle sleeve 5 of outside, seal shaft 6 front end, stainless steel gasket 7 is provided with between the impeller nut 1 on impeller 2 and impeller 2 top, the external diameter of described stainless steel gasket 7 is greater than impeller nut 1 external diameter 1mm, and internal diameter exceeds the outer 1mm of seal shaft 6 spindle nose screw thread; The internal diameter oil resistant O type circle 3 identical with impeller 2 internal diameter and the stainless steel packing ring 4 with the installation circular groove consistent size in axle sleeve 5 is provided with between impeller 2 with axle sleeve 5.
The size of stainless steel gasket 7 is set to φ 27.5mm × φ 30.5mm × 1mm.The design of stainless steel gasket 7, the hard contact form before changing between impeller and impeller nut, adds static seal structure, efficiently solves the possibility that medium leaks from here.
The size of oil resistant O type circle 3 is set to φ 30.5mm × 3.5mm × 3.5mm.Stainless steel packing ring 4 is of a size of φ 27.5mm × φ 30.5mm × 3mm.Guarantee seal shaft 6 not contact medium, improve the life-span of seal shaft 6.When this part is installed, can not machine oil be smeared simultaneously, special lubricating grease or vaseline can only be smeared; The design of oil resistant O type circle 3 and stainless steel packing ring 4 changes the contact form between impeller 2 and axle sleeve 5, achieves the soft contact between two workpiece, efficiently solves the possibility that medium leaks from here.
Meanwhile, in the course of working of this accessory, take into full account versatility and the interchangeability of accessory.On equipment seal shaft 6 of the same type, can replace and adopt this novel seal axle 6.
Above-described embodiment of the present utility model is only for the utility model example is clearly described, and is not the restriction to mode of execution of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Every belong to the technical solution of the utility model the apparent change of extending out or variation be still in the row of protection domain of the present utility model.
Claims (3)
1. a novel seal axle, comprise seal shaft, be positioned at the impeller on seal shaft top and be positioned at the axle sleeve of outside, seal shaft front end, it is characterized in that: between impeller and the impeller nut of impeller tip, be provided with stainless steel gasket, the external diameter of described stainless steel gasket is greater than impeller nut external diameter 1-2mm, and internal diameter exceeds the outer 0.5-1.5mm of seal shaft spindle nose screw thread; The internal diameter oil resistant O type circle identical with profile ID and the stainless steel packing ring with the installation circular groove consistent size in axle sleeve is provided with between impeller with axle sleeve.
2. a kind of novel seal axle according to claim 1, is characterized in that: described stainless steel gasket thickness is 1-2mm.
3. a kind of novel seal axle according to claim 1, is characterized in that: the thickness 3.5-4mm of described oil resistant O type circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420660038.7U CN204226264U (en) | 2014-11-06 | 2014-11-06 | A kind of novel seal axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420660038.7U CN204226264U (en) | 2014-11-06 | 2014-11-06 | A kind of novel seal axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204226264U true CN204226264U (en) | 2015-03-25 |
Family
ID=52924367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420660038.7U Active CN204226264U (en) | 2014-11-06 | 2014-11-06 | A kind of novel seal axle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204226264U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678075A (en) * | 2017-02-27 | 2017-05-17 | 南通大通宝富风机有限公司 | Connecting structure for impeller and high-speed shaft of steam compressor |
| CN110159587A (en) * | 2019-06-24 | 2019-08-23 | 浙江威格泵业有限公司 | A kind of rotor structure |
-
2014
- 2014-11-06 CN CN201420660038.7U patent/CN204226264U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678075A (en) * | 2017-02-27 | 2017-05-17 | 南通大通宝富风机有限公司 | Connecting structure for impeller and high-speed shaft of steam compressor |
| CN110159587A (en) * | 2019-06-24 | 2019-08-23 | 浙江威格泵业有限公司 | A kind of rotor structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |