CN112648375B - Reinforced polyether type polyester shaft seal assembly for mud pump sealed water chamber - Google Patents
Reinforced polyether type polyester shaft seal assembly for mud pump sealed water chamber Download PDFInfo
- Publication number
- CN112648375B CN112648375B CN202011480568.XA CN202011480568A CN112648375B CN 112648375 B CN112648375 B CN 112648375B CN 202011480568 A CN202011480568 A CN 202011480568A CN 112648375 B CN112648375 B CN 112648375B
- Authority
- CN
- China
- Prior art keywords
- shaft seal
- type polyester
- polyether type
- mud pump
- resistance
- 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.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3208—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip provided with tension elements, e.g. elastic rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3268—Mounting of sealing rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
Abstract
The invention relates to a reinforced polyether type polyester shaft seal assembly for a mud pump sealed water chamber, which comprises a sealing cover plate, a shaft seal group and a white steel sleeve, wherein the sealing cover plate is covered on the white steel sleeve, the shaft seal group is arranged between the sealing cover plate and the white steel sleeve, the shaft seal group consists of unit polyether type polyester shaft seal pieces, and a spring support piece is arranged in each unit polyether type polyester shaft seal piece. Aiming at the working conditions that the pressure of the existing mud pump is higher than 15kg per square meter and more abrasive particles are contained in the treated water and are larger than 100 micrometers, the invention has the advantages of good wear resistance, improved mechanical properties such as tensile strength, elongation at break, tear strength and the like, excellent radiation resistance and ozone resistance and good low-temperature resistance. The temperature range for long-time continuous operation is generally 80-90 ℃, and the temperature for short-time use can reach 100 ℃.
Description
Technical Field
The invention belongs to the technical field of sealing, relates to a shaft seal assembly processing technology, and particularly relates to a reinforced polyether type polyester shaft seal assembly for a mud pump sealing water chamber.
Background
Along with the rise of production cost, people pay more and more attention to the protection of the pump bearing, especially the underwater bearing working at high strength, and after water enters the underwater bearing, lubricating grease is deteriorated to cause the damage of the bearing. Although the technology is continuously improved, at present, a large proportion of pump bearings still adopt a framework oil seal technology of spring pretension to prevent lubricating grease from being polluted by impurities such as external water, dust and the like.
The spring-preloaded framework oil seal is a device invented by more than half century ago for protecting lubricating grease of an aircraft landing gear. Obviously, it is only suitable for intermittent operation, and for high-strength continuous underwater pumps, especially mud pumps, will be subject to bearing failure due to contamination of the lubricating medium, which in turn affects the working efficiency and increases the maintenance cost.
The mud pump shaft seal is lip seal, the second shaft seal of its three shaft seals is on the white steel bush of pump shaft, have the spiral and move on the groove that advances gradually, high pressure seal water is through the sealed circumference rotation on white steel bush helicla flute of lip, discharge water from the helicla flute, in this process, the pressure of the pump body can be balanced to water pressure when establishing the hydrodynamic force lubricant film, partly rivers go out the helicla flute simultaneously, to another shaft seal room, so the second shaft seal resists high, the wearing and tearing volume is the biggest, thereby it influences work efficiency and increases change and cost of maintenance very easily to damage.
Disclosure of Invention
Aiming at the working conditions that the pressure of the existing mud pump is higher than 15kg per square meter and more abrasive particles are contained in the treated water and are larger than 100 micrometers, the invention provides the reinforced polyether polyester shaft seal assembly for the sealed water chamber of the mud pump, which has excellent wear resistance, high elasticity under high hardness and excellent grease resistance, and the service life can be prolonged by 3-4 times according to the practical application result for many years.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
the reinforced polyether type polyester shaft seal assembly for the mud pump sealed water chamber comprises a sealing cover plate, a shaft seal group and a white steel sleeve, wherein the sealing cover plate is covered on the white steel sleeve, the shaft seal group is arranged between the sealing cover plate and the white steel sleeve, the shaft seal group is composed of unit polyether type polyester shaft seal pieces, and a spring support piece is arranged in each unit polyether type polyester shaft seal piece.
And the unit polyether type polyester shaft sealing part comprises an axial rubber block and a radial rubber block, the axial rubber block and the radial rubber block are integrally manufactured into a seamless structure, and the spring supporting part is axially inserted in the axial rubber block.
Moreover, the spring support part is a spring column of which the outer layer is coated with a polyether type polyester rubber sleeve.
And, a T-shaped lug is integrally formed at the top of the axial rubber block.
And a groove is formed on the inner side of the tail end of the radial rubber block, and a reinforced rubber column is inserted in the groove.
The invention has the advantages and positive effects that:
the reinforced polyether type polyester shaft seal is used for sealing a mud pump sealing water chamber, the elastic performance of the improved shaft seal structure is enhanced, the shaft seal structure can recover the original shape after being stretched or extruded and deformed, the shaft seal structure has high abrasion resistance, the effect of a pump (a pump with high pressure discharge) in a bin is better through practice application, and the service life of the pump can be prolonged by 3-4 times.
The invention aims to overcome the defects of the prior art, and provides a reinforced polyether type polyester shaft seal assembly for a mud pump sealed water chamber aiming at the working condition that the pressure of the mud pump is higher than 15 kg/square meter and the treated water contains more abrasive particles which are larger than 100 micrometers. The wear-resistant rubber has good wear resistance, improved mechanical properties such as tensile strength, elongation at break, tear strength and the like, excellent radiation resistance and ozone resistance and better low-temperature resistance. The temperature range for long-time continuous operation is generally 80-90 ℃, and the temperature for short-time use can reach 100 ℃.
Drawings
Fig. 1 is a structural sectional view of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments, which are illustrative only and not limiting, and the scope of the present invention is not limited thereby.
A reinforced polyether type polyester shaft seal assembly for a mud pump sealed water chamber is shown in figure 1 and comprises a sealing cover plate 1, a shaft seal group and a white steel sleeve 2, wherein the sealing cover plate is covered on the white steel sleeve, the shaft seal group is arranged between the sealing cover plate and the white steel sleeve, the shaft seal group is composed of unit polyether type polyester shaft seal parts, and a spring support part 3 is arranged in each unit polyether type polyester shaft seal part.
The unit polyether type polyester shaft sealing piece comprises an axial rubber block 6 and a radial rubber block 4, the axial rubber block and the radial rubber block are integrally made into a seamless structure, and the spring supporting piece is axially inserted in the axial rubber block.
The spring support part is a spring column 5 of which the outer layer is coated with a polyether type polyester rubber sleeve.
A T-shaped lug 7 is integrally formed at the top of the axial rubber block, and a rubber reinforcing block can be added at the lower part of the T-shaped lug according to the actual use requirement.
The inner side of the tail end of the radial rubber block is provided with a groove, and a reinforced rubber column 5 is inserted in the groove.
The reinforced polyether type polyester shaft seal is used for sealing a mud pump sealing water chamber, the elastic performance of the improved shaft seal structure is enhanced, the shaft seal structure can recover the original shape after being stretched or extruded and deformed, the shaft seal structure has high abrasion resistance, the effect of a pump (a pump with high pressure discharge) in a bin is better through practice application, and the service life of the pump can be prolonged by 3-4 times.
The reinforced polyether polyester is a high polymer between rubber and plastic, and the quality requirements and parameters of the polyether polyester shaft seal are as follows:
1. density of 1.08 mg/square meter
2. Hardness 95 + - (Shore A)
3. Tensile strength 39MPa
4. Elongation at break of 610%
5.100% stress at definite elongation of 5.9MPa
6.300% stress at definite elongation of 11.0MPa
7. Tear strength 36 KN/square meter
8. Compression set
15(70C*24h*15％)
9. Allowable pressure (P) 60Kg/cm
10. The rebound resilience is more than or equal to 67 percent
11. Peel strength 23.6N/mm
The wear resistance is 5-10 times of that of natural rubber, 3 times of that of styrene butadiene rubber, the mechanical strength is 2-3 times of that of the natural rubber, and the mechanical properties such as tensile strength, elongation at break, tearing strength and the like are greatly superior to those of common rubber materials; the elastic polyurethane elastomer has a wider hardness adaptation range, and can keep higher elasticity in a wider hardness range (Shore A10-Shore D98); but also has high elasticity and high surface finish under high hardness, the device is suitable for being used at a certain linear speed and under high pressure; secondly, the rubber has a wider modulus (the ratio of stress to strain of the material under a stress state) range, and the modulus of the rubber is between that of common rubber and plastic; the oil and grease resistance is excellent (the oil resistance is 3-5 times of that of nitrile-butadiene rubber), and the chemical resistance is good.
The oil resistance is better than that of nitrile rubber; the ageing resistance is superior to that of natural rubber and other synthetic rubber; hydrolysis resistance, acid and alkali resistance. Moreover, the polyether polyester product has excellent radiation resistance and ozone resistance; the low temperature resistance is better. The temperature range of the product for long-time continuous work is generally 80-90 ℃, and the temperature for short-time use can reach 100 ℃.
Although the embodiments of the present invention and the accompanying drawings are disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the invention and the appended claims, and therefore the scope of the invention is not limited to the disclosure of the embodiments and the accompanying drawings.
Claims (1)
1. The utility model provides a sealed hydroecium of mud pump is with strenghthened type polyether type polyester shaft seal subassembly which characterized in that: the spring support piece is a spring column with an outer layer coated with a polyether type polyester rubber sleeve, a T-shaped convex block is integrally manufactured at the top of the axial rubber block, a groove is manufactured on the inner side of the tail end of the radial rubber block, and a reinforced type rubber column is inserted in the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011480568.XA CN112648375B (en) | 2020-12-16 | 2020-12-16 | Reinforced polyether type polyester shaft seal assembly for mud pump sealed water chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011480568.XA CN112648375B (en) | 2020-12-16 | 2020-12-16 | Reinforced polyether type polyester shaft seal assembly for mud pump sealed water chamber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112648375A CN112648375A (en) | 2021-04-13 |
| CN112648375B true CN112648375B (en) | 2023-03-24 |
Family
ID=75354123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011480568.XA Active CN112648375B (en) | 2020-12-16 | 2020-12-16 | Reinforced polyether type polyester shaft seal assembly for mud pump sealed water chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112648375B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1898489A (en) * | 2003-12-22 | 2007-01-17 | E.I.内穆尔杜邦公司 | Multi-layered seal structure |
| CN102734469A (en) * | 2011-04-01 | 2012-10-17 | 江门市鑫辉密封科技有限公司 | Rotation assembling oil seal for being used under middle and high pressure |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2390054Y (en) * | 1999-07-16 | 2000-08-02 | 王春志 | Multi-stage shaft seal device |
| CN201100410Y (en) * | 2007-05-25 | 2008-08-13 | 宁波宝新不锈钢有限公司 | An oil jar sealing structure for coiling canister clamp hole of stainless cold rolling mill |
| US8096559B2 (en) * | 2008-05-23 | 2012-01-17 | Bal Seal Engineering, Inc. | Rotary seals |
| CN201531608U (en) * | 2009-11-24 | 2010-07-21 | 常卫华 | High pressure resistant framework oil seal |
| DE102013010926A1 (en) * | 2013-06-29 | 2014-12-31 | Geräte- und Pumpenbau GmbH Dr. Eugen Schmidt | Radial shaft seal |
| CA2895849C (en) * | 2014-07-09 | 2019-10-15 | Saint-Gobain Performance Plastics Corporation | Polymer seal assembly |
| EP3023511B1 (en) * | 2014-11-24 | 2021-07-28 | Safran Aero Boosters SA | Composition and abradable seal of an axial turbomachine compressor housing |
| CN209586766U (en) * | 2018-08-24 | 2019-11-05 | 新界泵业集团股份有限公司 | Use the immersible pump of outside framework oil seal |
-
2020
- 2020-12-16 CN CN202011480568.XA patent/CN112648375B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1898489A (en) * | 2003-12-22 | 2007-01-17 | E.I.内穆尔杜邦公司 | Multi-layered seal structure |
| CN102734469A (en) * | 2011-04-01 | 2012-10-17 | 江门市鑫辉密封科技有限公司 | Rotation assembling oil seal for being used under middle and high pressure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112648375A (en) | 2021-04-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103450655B (en) | A kind of sizing material of blower fan rotation axis seal | |
| CN112648375B (en) | Reinforced polyether type polyester shaft seal assembly for mud pump sealed water chamber | |
| CN105889327A (en) | Composite bearing bush strip | |
| CN214274481U (en) | Strenghthened type polyether type polyester bearing seal subassembly suitable for sealed hydroecium of dredge pump | |
| CN201129315Y (en) | Ultra-high pressure anti-scaling mechanical sealing device | |
| CN214274486U (en) | Reinforced polyether type polyester shaft seal part | |
| CN206257281U (en) | A kind of main shaft of vertical water turbine sealing device | |
| CN108223804B (en) | Clean packing sealing device with sheath | |
| CN202468992U (en) | Combined through hole sealing ring with low pressure resistance and high pressure resistance | |
| CN103242570A (en) | Rubber component material of high-pressure oil seal for hydraulic pump, and manufacturing technology thereof | |
| CN210344320U (en) | Three-eccentric butterfly valve with self-adaptive sealing ring | |
| CN201190664Y (en) | Elastic gear pump | |
| CN214274264U (en) | Underwater pump thrust bearing seal assembly | |
| CN201875159U (en) | Triple eccentric hard seal wear-resistant butterfly valve | |
| CN201487436U (en) | Novel rotary joint | |
| CN100351563C (en) | Valve stand and valve core sealing structure of rotary motion valve | |
| CN201093076Y (en) | Backbone type oil seal | |
| CN2668940Y (en) | Sealing ring | |
| CN201396434Y (en) | Novel non-abrasion shaft oil seal | |
| CN100487295C (en) | High pressure swivel joint | |
| CN101561052A (en) | Arc-straight line dual-path sealed ball valve base | |
| CN206092485U (en) | Water pump of wear -resisting pump axle and applied this pump shaft | |
| CN215293090U (en) | Polyurethane dust ring | |
| CN220267919U (en) | Piston rubber sealing body | |
| CN206582333U (en) | A kind of dragveyer inner guide pulley is with can the sealing structure changed of full water |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |