CN105179300A - Condensate pump shaft seal device - Google Patents
Condensate pump shaft seal device Download PDFInfo
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- CN105179300A CN105179300A CN201510572639.1A CN201510572639A CN105179300A CN 105179300 A CN105179300 A CN 105179300A CN 201510572639 A CN201510572639 A CN 201510572639A CN 105179300 A CN105179300 A CN 105179300A
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- described machine
- ring
- machine envelope
- axle sleeve
- mechanical seal
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Abstract
The invention relates to a condensate pump shaft seal device which is used for sealing a shaft. The condensate pump shaft seal device is characterized by comprising a mechanical seal shaft sleeve, a mechanical seal pressure cover and a sealing box, wherein the mechanical seal shaft sleeve is arranged at the outer side of the shaft in a sleeving mode, and is axially limited by virtue of a positioning bolt; a mechanical seal static ring and a mechanical seal dynamic ring are arranged on the outer part of the mechanical seal shaft sleeve in the sleeving mode; the mechanical seal static ring is positioned above the mechanical seal dynamic ring; a gap is formed between the mechanical seal static ring and the mechanical seal shaft sleeve; the mechanical seal pressure cover is arranged on the outer part of the mechanical seal static ring and the mechanical seal dynamic ring in the sleeving mode; the upper part of the mechanical seal pressure cover resists against the mechanical seal shaft sleeve; the sealing box is arranged at the outer side of the shaft in the sleeving mode; the lower part of the sealing box is positioned below the mechanical seal shaft sleeve; the upper part of the sealing box resists against the lower end surface of the mechanical seal pressure cover; a cavity is enclosed by the mechanical seal pressure cover, the sealing box, the mechanical seal static ring and the mechanical seal static ring; the cavity communicates with the gap; a spring seat is arranged on the outer side surface of the lower part of the mechanical seal shaft sleeve; and a spring is arranged on the spring seat.
Description
Technical field
The present invention relates to a kind of solidifying pump shaft sealing device.
Background technique
The sealing of current existing solidifying pump shaft generally adopts floating-ring seal mechanism, so-called float ring seal primarily of multiple can the composition such as floating ring, floating bushing, supported spring of radial floating, the seal action of floating ring keeps uniform minimum clearance by floating ring radial floating, realize radial seal with floating ring with tight contact of floating bushing end face, the throttling action of the narrow gap simultaneously formed with the outer round surface of the internal circular surfaces of floating ring and axle sleeve is again to reach axial seal.The shortcoming of float ring seal is as follows: the accuracy of manufacturing of Sealing requires high, and there is obvious impact on the nonconcentricity of ring and the non-perpendicularity of end face and surface not roughness on sealability.In addition, this sealing can not be accomplished to obturage to liquid and do not leaked.The solidifying a large amount of water dumping in Pump Shaft Seal place after Long-Time Service, if turn down sealing water, cooling water valve, unit is blank, and refined condensate treatment severe overweight, site environment is poor.
Summary of the invention
The present invention is for providing the solidifying pump shaft sealing device that a kind of structure is simple, good sealing effect, sealing state are very stable, leakage rate is very little, self lubricity is good.
The present invention is achieved through the following technical solutions:
A kind of solidifying pump shaft sealing device, for sealing axle, comprise machine envelope axle sleeve, machine sealed cover and sealed case, described machine envelope axle sleeve is sleeved on the outside of described axle, and it is spacing in the axial direction by positioning screwn, the outer cover of described machine envelope axle sleeve is provided with machine envelope stationary ring and machine envelope rotating ring, described machine envelope stationary ring is positioned at described machine envelope rotating ring top, described machine envelope stationary ring and described machine seal between axle sleeve and are provided with gap, described machine sealed cover encapsulation is in described machine envelope stationary ring and machine envelope rotating ring outside, it is inconsistent that described machine sealed cover top and described machine seal axle sleeve, described sealed case encapsulation is in the outside of described axle, the bottom of described sealed case is positioned at below described machine envelope axle sleeve, the top of described sealed case and the lower end surface of described machine sealed cover inconsistent, described machine sealed cover, sealed case, machine envelope stationary ring and machine envelope rotating ring surround cavity, described cavity is connected with described gap, the outer side surface of the bottom of described machine envelope axle sleeve is provided with a spring seat, described spring seat is provided with spring, described machine envelope rotating ring bottom is connected by the first anti-multiple level marketing with described spring seat, described machine sealed cover is provided with sparge water perforate and the perforate of sealing cooling water diametrically, and be connected with described cavity respectively, described machine sealed cover upper-end surface is provided with assembled plate, and be connected with described machine sealed cover by the first retaining screw.
Described spring seat and described machine seal to be provided with to assemble between rotating ring to be sold, and described assembling pin upper end is through described machine envelope rotating ring, and lower end is through described spring seat.
Assembling ring is provided with between the exterior edge face of described machine envelope axle sleeve upper end and described positioning screwn, described assembling ring set is loaded on described positioning screwn, described axle is provided with limited impression with the inconsistent position of described positioning screwn, and the inner of described positioning screwn is absorbed in described limited impression.
Described machine sealed cover is connected with described sealed case by the second retaining screw.
The outer side surface place of described machine envelope axle sleeve lower end is provided with a circle block reinforcement, and described spring seat is located at above described block reinforcement.
Described machine sealed cover is provided with pin-and-hole diametrically, is provided with the second anti-multiple level marketing in described pin-and-hole.
Described machine envelope axle sleeve and described machine seal between stationary ring and are provided with the first seal ring.
The second seal ring is provided with between the lower end surface of described machine envelope axle sleeve and the upper-end surface of described sealed case.
Described machine envelope axle sleeve and described machine seal between rotating ring and are provided with the 3rd seal ring.
The 4th seal ring is provided with between described machine envelope axle sleeve bottom and described axle.
The beneficial effect that the present invention brings is:
In the present invention, described solidifying pump shaft sealing device comprises machine envelope axle sleeve, machine sealed cover and sealed case, by mechanical seal principle, axle place is sealed, so-called mechanical seal is to perpendicular to axle by a pair or several, make the end face of relative sliding, under the elastic force effect of hydrodynamic pressure and compensation mechanism, keep laminating, and be equipped with auxiliary seal and reach the object of Drain Resistance.Mechanical seal advantage has: sealing is reliable, and in macrocyclic operation, sealing state is very stable, and leakage rate is very little, and has good self lubricity.Improved solidifying pump shaft sealing device operational effect: good sealing effect, do not reveal, saved a large amount of demineralized water, site environment have also been obtained very large improvement.Because the water quality of power plant condensation water is good, Production Regional working environment better, therefore during retrofit of axial seal, shaft seal sparge water interface, sparge water backwater interface are carried out shutoff, and fielded system is simplified.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Fig. 1 is the structural representation of solidifying pump shaft sealing device of the present invention.
The label that in figure, component names is corresponding is as follows:
1, axle; 2, machine envelope axle sleeve; 3, machine sealed cover; 4, sealed case; 5, positioning screwn; 6, machine envelope stationary ring; 7, machine envelope rotating ring; 8, gap; 9, cavity; 10, spring seat; 11, spring; 12, the first anti-multiple level marketing; 13, sparge water perforate; 14, cooling water perforate is sealed; 15, assembled plate; 16, the first retaining screw; 17, assembling pin; 18, ring is assembled; 19, limited impression; 20, the second retaining screw; 21, block reinforcement; 22, pin-and-hole; 23, the second anti-multiple level marketing; 24, the first seal ring; 25, the second seal ring; 26, the 3rd seal ring; 27, the 4th seal ring.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail:
As the embodiment of solidifying pump shaft sealing device of the present invention, as shown in Figure 1, for sealing axle 1, described solidifying pump shaft sealing device comprises machine envelope axle sleeve 2, machine sealed cover 3 and sealed case 4, described machine envelope axle sleeve 2 is sleeved on the outside of described axle 1, and it is spacing in the axial direction by positioning screwn 5, the outer cover of described machine envelope axle sleeve 2 is provided with machine envelope stationary ring 6 and machine envelope rotating ring 7, described machine envelope stationary ring 6 is positioned at described machine envelope rotating ring 7 top, described machine envelope stationary ring 6 and described machine seal between axle sleeve 2 and are provided with gap 8, described machine sealed cover 3 encapsulation is in described machine envelope stationary ring 6 and machine envelope rotating ring 7 outside, it is inconsistent that described machine sealed cover 3 top and described machine seal axle sleeve 2, described sealed case 4 encapsulation is in the outside of described axle 1, the bottom of described sealed case 4 is positioned at below described machine envelope axle sleeve 2, the top of described sealed case 4 and the lower end surface of described machine sealed cover 3 inconsistent, described machine sealed cover 3, sealed case 4, machine envelope stationary ring 6 and machine envelope rotating ring 7 surround cavity 9, described cavity 9 is connected with described gap 8, the outer side surface of the bottom of described machine envelope axle sleeve 2 is provided with a spring seat 10, described spring seat 10 is provided with spring 11, described machine envelope rotating ring 7 bottom is connected by the first anti-multiple level marketing 12 with described spring seat 10, described spring seat 10 and arranging of spring 11 can compensate the amount of moving up and down of machine envelope rotating ring 7 effectively, described machine sealed cover 3 is provided with sparge water perforate 13 and sealing cooling water perforate 14 diametrically, and be connected with described cavity 9 respectively, described machine sealed cover 3 upper-end surface is provided with assembled plate 15, and be connected with described machine sealed cover 3 by the first retaining screw 16.By mechanical seal principle, axle 1 place is sealed, so-called mechanical seal be by a pair or several to perpendicular to axle, make the end face of relative sliding, under the elastic force effect of hydrodynamic pressure and compensation mechanism, keep laminating, and be equipped with auxiliary seal and reach the object of Drain Resistance.Mechanical seal advantage has: sealing is reliable, and in macrocyclic operation, sealing state is very stable, and leakage rate is very little, and has good self lubricity.Improved solidifying pump shaft sealing device operational effect: good sealing effect, do not reveal, saved a large amount of demineralized water, site environment have also been obtained very large improvement.
In the present embodiment, described spring seat 10 and described machine seal to be provided with between rotating ring 7 assembles pin 17, and described assembling pin 17 upper end is through described machine envelope rotating ring 7, and lower end is through described spring seat 10.Described assembling pin 17 is as limit position part diametrically in the process that moves up and down of machine envelope rotating ring 7, and described machine envelope rotating ring 7 moves up and down along described assembling pin 17.
In the present embodiment, be provided with between the exterior edge face of described machine envelope axle sleeve 2 upper end and described positioning screwn 5 and assemble ring 18, described assembling ring 18 is set on described positioning screwn 5, described axle 1 is provided with limited impression 19 with the described inconsistent position of positioning screwn 5, and the inner of described positioning screwn 5 is absorbed in described limited impression 19.When described positioning screwn 5 is absorbed in the limited impression 19 on described axle 1, then described machine envelope axle sleeve 2 just located in the axial direction, and and also can not produce relative rotation between axle 1.
In the present embodiment, described machine sealed cover 3 is connected with described sealed case 4 by the second retaining screw 20.Relatively firm by the Placement of the second retaining screw 20, be not easy to loosen.
In the present embodiment, the outer side surface place of described machine envelope axle sleeve 2 lower end is provided with a circle block reinforcement 21, and described spring seat 10 is located at above described block reinforcement 21.Described block reinforcement 21 prevents spring seat 10 from the lower end landing of machine envelope axle sleeve 2.
In the present embodiment, described machine sealed cover 3 is provided with pin-and-hole 22 diametrically, is provided with the second anti-multiple level marketing 23 in described pin-and-hole 22.
In the present embodiment, described machine envelope axle sleeve 2 and described machine seal between stationary ring 6 and are provided with the first seal ring 24.Described first seal ring 24 plays the effect of sealing.
In the present embodiment, between the lower end surface of described machine envelope axle sleeve 3 and the upper-end surface of described sealed case 4, be provided with the second seal ring 25.Described second seal ring 25 plays the effect of sealing.
In the present embodiment, described machine envelope axle sleeve 2 and described machine seal between rotating ring 7 and are provided with the 3rd seal ring 26.Described 3rd seal ring 26 plays the effect of sealing.
In the present embodiment, between described machine envelope axle sleeve 2 bottom and described axle 1, be provided with the 4th seal ring 27.Described 4th seal ring 27 plays the effect of sealing.
More than describe preferred embodiment of the present invention in detail.Should be appreciated that those of ordinary skill in the art just design according to the present invention can make many modifications and variations without the need to creative work.Therefore; the technological scheme that any amendment that all technician are in the art done by logical analysis, reasoning, or a limited experiment under this invention's idea on the basis of existing technology, equivalent replacement, improvement etc. obtain, all should by the determined protection domain of claims.
Claims (10)
1. a solidifying pump shaft sealing device, for sealing axle, it is characterized in that comprising machine envelope axle sleeve, machine sealed cover and sealed case, described machine envelope axle sleeve is sleeved on the outside of described axle, and it is spacing in the axial direction by positioning screwn, the outer cover of described machine envelope axle sleeve is provided with machine envelope stationary ring and machine envelope rotating ring, described machine envelope stationary ring is positioned at described machine envelope rotating ring top, described machine envelope stationary ring and described machine seal between axle sleeve and are provided with gap, described machine sealed cover encapsulation is in described machine envelope stationary ring and machine envelope rotating ring outside, it is inconsistent that described machine sealed cover top and described machine seal axle sleeve, described sealed case encapsulation is in the outside of described axle, the bottom of described sealed case is positioned at below described machine envelope axle sleeve, the top of described sealed case and the lower end surface of described machine sealed cover inconsistent, described machine sealed cover, sealed case, machine envelope stationary ring and machine envelope rotating ring surround cavity, described cavity is connected with described gap, the outer side surface of the bottom of described machine envelope axle sleeve is provided with a spring seat, described spring seat is provided with spring, described machine envelope rotating ring bottom is connected by the first anti-multiple level marketing with described spring seat, described machine sealed cover is provided with sparge water perforate and the perforate of sealing cooling water diametrically, and be connected with described cavity respectively, described machine sealed cover upper-end surface is provided with assembled plate, and be connected with described machine sealed cover by the first retaining screw.
2. pump shaft sealing device as claimed in claim 1 solidifying, is characterized in that described spring seat and described machine seals to be provided with assemble between rotating ring and sell, and described assembling is sold upper end and passed described machine and seal rotating ring, and described spring seat is passed in lower end.
3. solidifying pump shaft sealing device as claimed in claim 2, it is characterized in that being provided with assembling ring between the exterior edge face of described machine envelope axle sleeve upper end and described positioning screwn, described assembling ring set is loaded on described positioning screwn, described axle is provided with limited impression with the inconsistent position of described positioning screwn, and the inner of described positioning screwn is absorbed in described limited impression.
4. solidifying pump shaft sealing device as claimed in claim 3, is characterized in that described machine sealed cover is connected with described sealed case by the second retaining screw.
5. solidifying pump shaft sealing device as claimed in claim 4, it is characterized in that the outer side surface place of described machine envelope axle sleeve lower end is provided with a circle block reinforcement, described spring seat is located at above described block reinforcement.
6. solidifying pump shaft sealing device as claimed in claim 5, is characterized in that described machine sealed cover is provided with pin-and-hole diametrically, is provided with the second anti-multiple level marketing in described pin-and-hole.
7. solidifying pump shaft sealing device as claimed in claim 6, is characterized in that described machine envelope axle sleeve and described machine seal between stationary ring and is provided with the first seal ring.
8. solidifying pump shaft sealing device as claimed in claim 7, is characterized in that being provided with the second seal ring between the lower end surface of described machine envelope axle sleeve and the upper-end surface of described sealed case.
9. solidifying pump shaft sealing device as claimed in claim 8, is characterized in that described machine envelope axle sleeve and described machine seal between rotating ring and is provided with the 3rd seal ring.
10. solidifying pump shaft sealing device as claimed in claim 9, is characterized in that being provided with the 4th seal ring between described machine envelope axle sleeve bottom and described axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510572639.1A CN105179300A (en) | 2015-09-10 | 2015-09-10 | Condensate pump shaft seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510572639.1A CN105179300A (en) | 2015-09-10 | 2015-09-10 | Condensate pump shaft seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105179300A true CN105179300A (en) | 2015-12-23 |
Family
ID=54901631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510572639.1A Pending CN105179300A (en) | 2015-09-10 | 2015-09-10 | Condensate pump shaft seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105179300A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762796A (en) * | 2016-12-29 | 2017-05-31 | 镇江福泰克流体技术有限公司 | A kind of high-performance single-stage double-suction middle-opening formula centrifugal pump |
| CN108612666A (en) * | 2016-12-09 | 2018-10-02 | 镇江立中机械设备有限公司 | Sealing structure on rear side of centrifugal fan casing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201386690Y (en) * | 2009-04-16 | 2010-01-20 | 沈阳启源工业泵制造有限公司 | Sealing device for vertical condensate pump |
| CN102116309A (en) * | 2010-12-30 | 2011-07-06 | 上海阿波罗机械股份有限公司 | Mechanical sealing device for centrifugal pump |
| US20110198813A1 (en) * | 2009-09-24 | 2011-08-18 | Hidekazu Takahashi | Mechanical seal |
| CN102606518A (en) * | 2012-03-27 | 2012-07-25 | 上海阿波罗机械股份有限公司 | Mechanical seal device of plant water pump for nuclear power plant |
| CN205001249U (en) * | 2015-09-10 | 2016-01-27 | 临涣中利发电有限公司 | It puts to congeal pump shaft encapsulation |
-
2015
- 2015-09-10 CN CN201510572639.1A patent/CN105179300A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201386690Y (en) * | 2009-04-16 | 2010-01-20 | 沈阳启源工业泵制造有限公司 | Sealing device for vertical condensate pump |
| US20110198813A1 (en) * | 2009-09-24 | 2011-08-18 | Hidekazu Takahashi | Mechanical seal |
| CN102116309A (en) * | 2010-12-30 | 2011-07-06 | 上海阿波罗机械股份有限公司 | Mechanical sealing device for centrifugal pump |
| CN102606518A (en) * | 2012-03-27 | 2012-07-25 | 上海阿波罗机械股份有限公司 | Mechanical seal device of plant water pump for nuclear power plant |
| CN205001249U (en) * | 2015-09-10 | 2016-01-27 | 临涣中利发电有限公司 | It puts to congeal pump shaft encapsulation |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108612666A (en) * | 2016-12-09 | 2018-10-02 | 镇江立中机械设备有限公司 | Sealing structure on rear side of centrifugal fan casing |
| CN106762796A (en) * | 2016-12-29 | 2017-05-31 | 镇江福泰克流体技术有限公司 | A kind of high-performance single-stage double-suction middle-opening formula centrifugal pump |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151223 |