CN203463666U - Double mechanical seal structure for pump - Google Patents
Double mechanical seal structure for pump Download PDFInfo
- Publication number
- CN203463666U CN203463666U CN201320593391.3U CN201320593391U CN203463666U CN 203463666 U CN203463666 U CN 203463666U CN 201320593391 U CN201320593391 U CN 201320593391U CN 203463666 U CN203463666 U CN 203463666U
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- pump
- stationary ring
- ring component
- axle
- pressing plate
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- Mechanical Sealing (AREA)
Abstract
The utility model provides a double mechanical seal structure for a pump, and belongs to the technical field of water pumps. The double mechanical seal structure for the pump solves the problem that an existing mechanical seal for the pump is not suitable for being applied to the pumps with a submerged depth larger than 10m or high pumping medium pressure and the pumps pumping media containing a large amount of mud and sand and working in other poor working conditions. The double mechanical seal structure for the pump comprises a first static ring component, a first dynamic ring component, a second dynamic ring component and a second static ring component, wherein the first static ring component and the first dynamic ring component are arranged on the end shaft of a motor in sequence, and the second dynamic ring component and the second static ring component are arranged on the end shaft of the pump in sequence, a spring with the two ends butting against the first dynamic ring component and the second dynamic ring component respectively is arranged between the first dynamic ring component and the second dynamic ring component, a step is arranged between the end shaft of the motor and the end shaft of the pump, a limit washer is arranged at the step position, and the second dynamic ring component butts against the limit washer when pressure in a water pump cavity is too large. The double mechanical seal structure for the pump can bear reversed working pressure more than 0.9MPa effectively under the premise of not increasing pump shaft power, and has the advantages of being wide in application range and good in stability.
Description
Technical field
The utility model belongs to pump technology field, relates to a kind of pump sealing configuration, particularly the double-face mechanical sealing structure on live axle for a kind of submersible pump.
Background technique
Double End is compared with single mechanical end face seal, and double mechanical seal performance is good, is applicable to deep-etching, high temperature, band suspended particulate and fiber medium, gas medium, the sealing of condition of high vacuum degree operating mode.Double mechanical seal is not only the repetition of single mechanical end face seal, in some important events of chemical industry, can effectively prevent the leakage of danger, poisonous, combustible material, there is high-performance safety effect, when sealed high pressure medium, the two ends pressure reduction that can reasonably distribute each sealing, improves the range of working pressure of sealing.Principle and the single mechanical end face seal of double mechanical seal are basic identical, are all to lean on the end face of vertical rotary axis under hydrodynamic pressure and the effect of compensation mechanism elastic force and the cooperation of auxiliary seal, to keep the device that prevents fluid leakage of fitting and sliding and forming.
On market, existing double mechanical seal stationary ring generally consists of abrading block and rubber parts activity, and motor side axle is identical with the axle journal of pump end axle, easily cause pump end rotating ring when pumping medium to move to motor side, be not suitable for being applied in delivering and contain under the bad working environments such as a large amount of silt particles and diving depth is greater than 10 meters or pump and pumps on the pump that pressure medium is higher and use, Applicable scope is little.
Summary of the invention
The purpose of this utility model is to have the problems referred to above for existing technology, has proposed a kind of pump double-face mechanical sealing structure being widely used in Engineering submersible pump.
The purpose of this utility model can realize by following technical proposal:
Double-face mechanical sealing structure for this pump, comprise static components one, the moving ring assembly one of being located at successively on motor side axle and be located at successively moving ring assembly two and the static components two on pump end axle, between described moving ring assembly one and moving ring assembly two, be provided with spring, one end of this spring is resisted against on moving ring assembly one, the other end of spring is resisted against on moving ring assembly two, it is characterized in that, between described motor side axle and pump end axle, there is step, described step place is provided with spacing shim, and described moving ring assembly two is resisted against on this spacing shim.
At above-mentioned pump, use in double-face mechanical sealing structure, described static components one comprises stationary ring pressing plate one and is located at the stationary ring piece one in stationary ring pressing plate one, described stationary ring piece one is formed by stationary ring abrading block one, stationary ring rubber one and the one sulfuration mold pressing of stationary ring skeleton, and described stationary ring piece one is provided with pressing plate groove.
At above-mentioned pump, with in double-face mechanical sealing structure, described moving ring assembly one comprises rotating ring one and bellows one, and described rotating ring one is riveted together by drive sleeve one with bellows one, and one end of above-mentioned spring is resisted against in this drive sleeve one.
At above-mentioned pump, use in double-face mechanical sealing structure, described static components two comprises stationary ring pressing plate two and is located at the stationary ring piece two in stationary ring pressing plate two, described stationary ring piece two is formed by stationary ring abrading block two, stationary ring rubber two and stationary ring skeleton curing mold pressing, and described stationary ring piece two is provided with pressing plate groove.
At above-mentioned pump, with in double-face mechanical sealing structure, described moving ring assembly two comprises rotating ring two and bellows two, and described rotating ring two is riveted together by drive sleeve two with bellows two, and the other end of above-mentioned spring is resisted against in this drive sleeve two.
At above-mentioned pump, with in double-face mechanical sealing structure, on described stationary ring piece two, be also provided with oil sealing pressing plate.
At above-mentioned pump, with in double-face mechanical sealing structure, the diameter of axle of described motor side axle is greater than the diameter of axle of pump end axle, and the diameter of axle of described moving ring assembly one is greater than the diameter of axle of moving ring assembly two, and described spring is volute spring.
Compared with prior art, this pump has the following advantages with double-face mechanical sealing structure:
On stationary ring piece one and stationary ring piece two, be respectively equipped with pressing plate groove, convenient stationary ring piece one and stationary ring piece two be fixed, can not produce the phenomenon of being pumped medium and overthrowing and spinning; Motor side axle and pump end axle are step transition, and are provided with spacing shim at step place, effectively to moving ring assembly two, carry out spacing; Stationary ring abrading block one and stationary ring abrading block two adopt carbofrax material molding sintering, and wear resistance is better; It is installed simply, reliable, maintenance is convenient, can be widely used in Engineering submersible pump, do not increasing under the prerequisite of electric pump spindle power, can effectively bear reverse operation pressure more than 0.9MPa.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of preferred embodiment of providing of the utility model.
Fig. 2 is the structural representation of the stationary ring piece one that provides of the utility model.
In figure, 1, motor side axle; 2, pump end axle; 3, spring; 4, step; 5, spacing shim; 61, stationary ring pressing plate one; 62, stationary ring piece one; 62a, stationary ring abrading block one; 62b, stationary ring rubber one; 62c, stationary ring skeleton one; 62d, pressing plate groove; 63, rotating ring one; 64, bellows one; 65, drive sleeve one; 71, stationary ring pressing plate two; 72, rotating ring two; 73, bellows two; 74, drive sleeve two; 75a, stationary ring abrading block two; 75b, stationary ring rubber two; 75c, stationary ring skeleton two; 75d, oil sealing pressing plate.
Embodiment
Be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
Pump double-face mechanical sealing structure as shown in Figure 1, comprise static components one, the moving ring assembly one of being located at successively from left to right on motor side axle 1 and be located at moving ring assembly two and the static components two on pump end axle 2, between moving ring assembly one and moving ring assembly two, be provided with spring 3, one end of this spring 3 is resisted against on moving ring assembly one, and the other end of spring 3 is resisted against on moving ring assembly two.In the present embodiment, as shown in Figure 1, between motor side axle 1 and pump end axle 2, have step 4, step 4 places are provided with spacing shim 5, and moving ring assembly two is resisted against on this spacing shim 5.
Concrete, as shown in Figure 1, static components one comprises stationary ring pressing plate 1 and is located at the stationary ring piece 1 in stationary ring pressing plate 1, stationary ring piece 1 is formed by stationary ring abrading block one 62a, stationary ring rubber one 62b and the one 62c sulfuration mold pressing of stationary ring skeleton, as shown in Figure 2, stationary ring piece 1 is provided with pressing plate groove 62d.
As shown in Figure 1, moving ring assembly one comprises rotating ring 1 and bellows 1, and rotating ring 1 is riveted together by drive sleeve 1 with bellows 1, and one end of spring 3 is resisted against in this drive sleeve 1.
As shown in Figure 1, static components two comprises stationary ring pressing plate 2 71 and is located at the stationary ring piece two in stationary ring pressing plate 2 71, and stationary ring piece two is formed by stationary ring abrading block two 75a, stationary ring rubber two 75b and the two 75c sulfuration mold pressings of stationary ring skeleton, and stationary ring piece two is provided with pressing plate groove 62d.
As shown in Figure 1, moving ring assembly two comprises rotating ring 2 72 and bellows 2 73, and rotating ring 2 72 is riveted together by drive sleeve 2 74 with bellows 2 73, and the other end of spring 3 is resisted against in this drive sleeve 2 74.
As shown in Figure 1, on stationary ring piece two, be also provided with oil sealing pressing plate 75d.
This pump is respectively equipped with pressing plate groove 62d on stationary ring piece 1 and stationary ring piece two with double-face mechanical sealing structure, convenient stationary ring piece 1 and stationary ring piece two are fixed, and can not produce the phenomenon of being pumped medium and overthrowing and spinning; Motor side axle 1 is step 4 transition with pump end axle 2, and is provided with spacing shim 5 at step 4 places, effectively to moving ring assembly two, carries out spacing; Stationary ring abrading block one 62a and stationary ring abrading block two 75a adopt carbofrax material molding sintering, and wear resistance is better; It is installed simply, reliable, maintenance is convenient, can be widely used in Engineering submersible pump.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (7)
1. a pump double-face mechanical sealing structure, comprise the static components one of being located at successively on motor side axle (1), moving ring assembly one and be located at successively moving ring assembly two and the static components two on pump end axle (2), between described moving ring assembly one and moving ring assembly two, be provided with spring (3), one end of this spring (3) is resisted against on moving ring assembly one, the other end of spring (3) is resisted against on moving ring assembly two, it is characterized in that, between described motor side axle (1) and pump end axle (2), there is step (4), described step (4) locates to be provided with spacing shim (5), described moving ring assembly two is resisted against on this spacing shim (5).
2. pump double-face mechanical sealing structure according to claim 1, it is characterized in that, described static components one comprises stationary ring pressing plate one (61) and is located at the stationary ring piece one (62) in stationary ring pressing plate one (61), described stationary ring piece one (62) is formed by stationary ring abrading block one (62a), stationary ring rubber one (62b) and stationary ring skeleton one (62c) sulfuration mold pressing, and described stationary ring piece one (62) is provided with pressing plate groove (62d).
3. pump double-face mechanical sealing structure according to claim 2, it is characterized in that, described moving ring assembly one comprises rotating ring one (63) and bellows one (64), described rotating ring one (63) is riveted together by drive sleeve one (65) with bellows one (64), and one end of above-mentioned spring (3) is resisted against in this drive sleeve one (65).
4. according to the pump double-face mechanical sealing structure described in claim 1 or 2 or 3, it is characterized in that, described static components two comprises stationary ring pressing plate two (71) and is located at the stationary ring piece two in stationary ring pressing plate two (71), described stationary ring piece two is formed by stationary ring abrading block two (75a), stationary ring rubber two (75b) and stationary ring skeleton two (75c) sulfuration mold pressing, and described stationary ring piece two is provided with pressing plate groove (62d).
5. pump double-face mechanical sealing structure according to claim 4, it is characterized in that, described moving ring assembly two comprises rotating ring two (72) and bellows two (73), described rotating ring two (72) is riveted together by drive sleeve two (74) with bellows two (73), and the other end of above-mentioned spring (3) is resisted against in this drive sleeve two (74).
6. pump double-face mechanical sealing structure according to claim 4, is characterized in that, described stationary ring piece two is provided with oil sealing pressing plate (75d).
7. according to the pump double-face mechanical sealing structure described in claim 1 or 2 or 3, it is characterized in that, the diameter of axle of described motor side axle (1) is greater than the diameter of axle of pump end axle (2), and the diameter of axle of described moving ring assembly one is greater than the diameter of axle of moving ring assembly two, and described spring (3) is volute spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320593391.3U CN203463666U (en) | 2013-09-25 | 2013-09-25 | Double mechanical seal structure for pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320593391.3U CN203463666U (en) | 2013-09-25 | 2013-09-25 | Double mechanical seal structure for pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203463666U true CN203463666U (en) | 2014-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320593391.3U Expired - Fee Related CN203463666U (en) | 2013-09-25 | 2013-09-25 | Double mechanical seal structure for pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203463666U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106662256A (en) * | 2014-08-26 | 2017-05-10 | 伊格尔工业股份有限公司 | Mechanical seal |
| CN107956735A (en) * | 2017-12-05 | 2018-04-24 | 浙江丰源泵业有限公司 | A kind of pump sealing structure |
-
2013
- 2013-09-25 CN CN201320593391.3U patent/CN203463666U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106662256A (en) * | 2014-08-26 | 2017-05-10 | 伊格尔工业股份有限公司 | Mechanical seal |
| US10024436B2 (en) | 2014-08-26 | 2018-07-17 | Eagle Industry Co., Ltd. | Mechanical seal |
| CN106662256B (en) * | 2014-08-26 | 2018-10-19 | 伊格尔工业股份有限公司 | Mechanical sealing member |
| CN107956735A (en) * | 2017-12-05 | 2018-04-24 | 浙江丰源泵业有限公司 | A kind of pump sealing structure |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140305 Termination date: 20210925 |
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| CF01 | Termination of patent right due to non-payment of annual fee |