CN203604243U - Anhydrous mechanical sealing structure for desulfuration slurry circulating pump - Google Patents
Anhydrous mechanical sealing structure for desulfuration slurry circulating pump Download PDFInfo
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- CN203604243U CN203604243U CN201320702059.6U CN201320702059U CN203604243U CN 203604243 U CN203604243 U CN 203604243U CN 201320702059 U CN201320702059 U CN 201320702059U CN 203604243 U CN203604243 U CN 203604243U
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- seal structure
- axle sleeve
- desulfurization slurry
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Abstract
The utility model discloses an anhydrous mechanical sealing structure for a desulfuration slurry circulating pump. The anhydrous mechanical sealing structure comprises a dynamic ring assembly and a static ring assembly. The dynamic ring assembly is arranged on a pump shaft and comprises a sealing shaft sleeve, a dynamic ring and a driving ring. The sealing shaft sleeve is arranged on the pump shaft, the dynamic ring is connected with the sealing shaft sleeve through a straight pin, and the driving ring is connected with the sealing shaft sleeve through an inner hexagonal jackscrew. The static ring assembly is arranged on a pump case of the desulfuration slurry circulating pump and comprises an end cover, a pushing ring, a static ring, a plurality of springs, an anti-rotating pin and an antiscour plate. The end cover is arranged on the pump case of the desulfuration slurry circulating pump, the antiscour plate is connected with the end cover through a screw, and the springs and the pushing ring are connected with the end cover through coupling screws. The static ring is connected with the pushing ring through the anti-rotating pin, and the static ring is tightly attached to the dynamic ring. The anhydrous mechanical sealing structure can enhance the operating stability of a mechanical seal, prolong the service life of the mechanism seal, and improve the desulfuration efficiency of the desulfuration slurry circulating pump.
Description
Technical field
The utility model relates to a kind of mechanical sealing structure for pump, is specifically related to a kind of desulfurization slurry recycle pump anhydrous mechanical seal structure.
Background technique
At present, the enterprise such as thermal power plant, chemical plant all needs desulphurization system to solve emission problem.General desulfurizer adopts Limestone-gypsum Wet Flue Gas Desulfurization Process technique, stove one tower, and each absorption tower is equipped with slurry circulating pump, and every stove arranges a set of flue gas and sulfur dioxide absorption system.Absorption tower slurry circulating pump is the visual plant in desulphurization system, it is extracted slurries out, supplies with atomizer nozzle from absorption tower, forming particle is tiny, reactivity is very high atomized drop and flue gas generation chemical reaction, is the key equipment that thermal power plant, chemical plant desulphurization system guarantee environmental protection index.
Mechanical seal structure adopts spring built-in, multiple little springs act on the dynamic and static ring of mechanical seal structure, stressed more even, mechanical seal structure running a period of time has gypsum slurries to be exuded on spring, dead Dan Huang Hu, cause spring mistake bullet, mechanical seal to be leaked in a large number, cause atmospheric pollution thereby cause desulphurization efficiency to decline; Therefore this mechanical seal structure must add sparge water and rinses, and sparge water is clear water, can cause a large amount of process waters wastes.The dynamic and static ring of the desulfurization slurry recycle pump mechanical seal structure of prior art adopts silicon carbide reaction-sintered (SiC), can cause to shorten the working life of mechanical seal structure.The end cap of this mechanical seal structure adopts dual phase steel pile-up welding hard alloy simultaneously, when gypsum slurries is during to the washing away of end cap, cause end cap to be washed and portal, slurry circulating pump backplate can be washed away and portals, cause gypsum slurries to leak, not only affected desulphurization efficiency but also caused atmospheric pollution.The outside framework oil seal that the sealing axle sleeve of the desulfurization slurry recycle pump mechanical seal structure of prior art is provided with, this oil sealing just rubs with sealing axle sleeve, because seal shaft jacket wall is thinner, after friction a period of time, outside framework oil seal rubber grinds deep groove on sealing axle sleeve, even sealing axle sleeve is rubbed, and has caused sealing axle sleeve to impeller end play, the dynamic and static anchor ring of mechanical seal structure just separately, causes gypsum slurries to leak like this.
Summary of the invention
The purpose of this utility model is to provide a kind of desulfurization slurry recycle pump anhydrous mechanical seal structure, and this anhydrous mechanical seal structure is rinsed without sparge water, can save a large amount of water resourcess, reduces user cost; This anhydrous mechanical seal structural design, can alleviate washing away of the end cap of gypsum slurries to mechanical seal structure, has improved the working life of desulfurization slurry circulation mechanical sealing structure for pump.
In order to achieve the above object, the utility model is achieved through the following technical solutions:
A kind of desulfurization slurry recycle pump anhydrous mechanical seal structure, wherein, anhydrous mechanical seal structure comprises: moving ring assembly and static components.
Above-mentioned moving ring assembly is arranged on pump shaft.Above-mentioned moving ring assembly comprises: sealing axle sleeve, rotating ring and driving ring.Above-mentioned sealing axle sleeve is arranged on pump shaft, and above-mentioned rotating ring is connected with sealing axle sleeve by straight pin, and above-mentioned driving ring is connected with sealing axle sleeve by interior hexagonal jackscrew.
Above-mentioned static components is arranged on the pump case of desulfurization slurry recycle pump.Above-mentioned static components comprises: end cap, throw-out collar, stationary ring, multiple spring, stop pin and erosion control brush board.Above-mentioned end cap is arranged on the pump case of desulfurization slurry recycle pump, above-mentioned erosion control brush board is connected with this end cap by screw, above-mentioned spring, above-mentioned throw-out collar are connected with this end cap by attachment screw, and above-mentioned stationary ring is connected with this throw-out collar by stop pin.
Above-mentioned stationary ring and above-mentioned rotating ring fit tightly.
Above-mentioned desulfurization slurry recycle pump anhydrous mechanical seal structure, wherein, above-mentioned erosion control brush board is to be made up of stainless steel, the coated one deck alloy in surface of this erosion control brush board.
Above-mentioned desulfurization slurry recycle pump anhydrous mechanical seal structure, wherein, above-mentioned multiple springs are arranged on the threaded stem of the attachment screw between screw head and the above-mentioned throw-out collar of above-mentioned attachment screw.
Above-mentioned desulfurization slurry recycle pump anhydrous mechanical seal structure, wherein, above-mentioned moving ring assembly also comprises multiple moving ring assembly O-ring seals; Between above-mentioned sealing axle sleeve and pump shaft, be provided with moving ring assembly O-ring seals, between above-mentioned rotating ring and sealing axle sleeve, be provided with moving ring assembly O-ring seals.
Above-mentioned desulfurization slurry recycle pump anhydrous mechanical seal structure, wherein, above-mentioned static components also comprises multiple static components O-ring seals; Between the pump case of above-mentioned end cap and desulfurization slurry recycle pump, be provided with static components O-ring seals press seal, between above-mentioned stationary ring and this end cap, be provided with this static components O-ring seals.
Above-mentioned desulfurization slurry recycle pump anhydrous mechanical seal structure, wherein, above-mentioned moving ring assembly also comprises positioning plate, and above-mentioned positioning plate is connected with above-mentioned throw-out collar, end cap by socket head screw.
Above-mentioned desulfurization slurry recycle pump anhydrous mechanical seal structure, wherein, is provided with gap between above-mentioned stationary ring and above-mentioned sealing axle sleeve, between above-mentioned throw-out collar and above-mentioned sealing axle sleeve, is provided with gap.
Above-mentioned desulfurization slurry recycle pump anhydrous mechanical seal structure, wherein, above-mentioned rotating ring is gap by straight pin with above-mentioned sealing axle sleeve and is connected; Between the axial vane surface of this rotating ring and above-mentioned sealing axle sleeve, be provided with gap.
The utility model compared with prior art has the following advantages:
1, adopt static spring structure
Static spring refers to that the spring of desulfurization slurry recycle pump anhydrous mechanical seal structure does not move with pump shaft, and static spring handle spring is arranged on end cap.The spring of static spring under having avoided running up is subject to the impact of centrifugal force; Avoided long centrifugal force may cause the variation of spring inner tissue, elasticity, the stressed of sealing axle sleeve to spring have a huge impact.Static spring design can guarantee that spring provides the spring force of lasting stability under running up for a long time to mechanical seal structure, guarantees the normal operation of mechanical seal structure.
2, adopt pressureless sintering silicon carbide
Desulfurization slurry recycle pump is selected pressureless sintering silicon carbide (SiC) with rotating ring, the stationary ring of anhydrous mechanical seal structure.Compare with general silicon carbide, pressureless sintering silicon carbide has that the close property of matter is good, corrosion resistance is strong, wear resistance is high, has certain self-repairability, mechanical strength advantages of higher.
3, without rinsing design
Desulfurization slurry recycle pump is arranged on end cap outside by anhydrous mechanical seal structure by spring, the placement space of spring can not restricted, spring is selected the spring that cylindrical is larger, spring can not followed the string because of the obstruction of gypsum slurries, increase the floatability of stationary ring, extended the working life of mechanical seal structure.Spring is arranged on the outside of end cap, does not contact with gypsum slurries, does not need a large amount of sparge waters to rinse out the gypsum slurries of infiltration, can save a large amount of water resourcess.As calculated, use original mechanical seal structure, one day about 20 tons of sparge water of needs of every recycle pump.Energy-saving and emission-reduction, cost efficiency are realized without rinsing design.
4, protection against erosion design
Desulfurization slurry recycle pump anhydrous mechanical seal structure, fixes an erosion control brush board in the outside of end cap by screw, and the coated one deck stellite of this erosion control brush board; Effective alleviation gypsum slurries washes away end cap, has improved greatly the working life of slurry circulating pump mechanical seal structure, has improved the desulphurization efficiency of power plant simultaneously.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of a kind of desulfurization slurry recycle pump of the utility model anhydrous mechanical seal structure.
Embodiment
Below in conjunction with accompanying drawing, by describing a preferably specific embodiment in detail, the utility model is further elaborated.
As shown in Figure 1, a kind of desulfurization slurry recycle pump anhydrous mechanical seal structure, wherein, anhydrous mechanical seal structure comprises: moving ring assembly 10 and static components 20.
Rotating ring 12, stationary ring 23 all select pressureless sintering silicon carbide to make.
Above-mentioned erosion control brush board 28 is to be made up of 2507 stainless steels, the coated one deck stellite in surface of this erosion control brush board 28.
Between stationary ring 23 and sealing axle sleeve 11, be provided with gap, between throw-out collar 22 and sealing axle sleeve 11, be provided with gap.The rotating ring 12 of moving ring assembly 10 is gap by straight pin 13 with sealing axle sleeve 11 and is connected; Between the axial vane surface of this rotating ring 12 and sealing axle sleeve 11, be provided with gap.
When installation, first sealing axle sleeve 11 is pushed along pump shaft 100, secondly end cap 21 and the pump case of desulfurization slurry recycle pump are fixed with bolt, reusing interior hexagonal jackscrew 15 is connected driving ring 14 with sealing axle sleeve 11, finally positioning plate 16 is taken out from the groove of sealing axle sleeve 11, make end cap 21 fixing with sealing axle sleeve 11, spring 24 is applied to spring force on stationary ring 23 by throw-out collar 22, stationary ring 23 and rotating ring 12 are fit together closely, guarantee the good operation of mechanical seal structure.
A kind of desulfurization slurry recycle pump anhydrous mechanical seal structure, select following design:
1, adopt static spring structure
Static spring refers to that the spring of desulfurization slurry recycle pump anhydrous mechanical seal structure does not move with pump shaft, and static spring handle spring is arranged on end cap.The spring of static spring under having avoided running up is subject to the impact of centrifugal force; Avoided long centrifugal force may cause the variation of spring inner tissue, elasticity, the stressed of sealing axle sleeve to spring have a huge impact.Static spring design can guarantee that spring provides the spring force of lasting stability under running up for a long time to mechanical seal structure, guarantees the normal operation of mechanical seal structure.
2, adopt pressureless sintering silicon carbide
Desulfurization slurry recycle pump is selected pressureless sintering silicon carbide (SiC) with rotating ring, the stationary ring of anhydrous mechanical seal structure.Compare with general silicon carbide, pressureless sintering silicon carbide has that the close property of matter is good, corrosion resistance is strong, wear resistance is high, has certain self-repairability, mechanical strength advantages of higher.
3, without rinsing design
Desulfurization slurry recycle pump is arranged on end cap outside by anhydrous mechanical seal structure by spring, the placement space of spring can not restricted, spring is selected the spring that cylindrical is larger, spring can not followed the string because of the obstruction of gypsum slurries, increase the floatability of stationary ring, extended the working life of mechanical seal structure.Spring is arranged on the outside of end cap, does not contact with gypsum slurries, does not need a large amount of sparge waters to rinse out the gypsum slurries of infiltration, can save a large amount of water resourcess.As calculated, use original mechanical seal structure, one day about 20 tons of sparge water of needs of every recycle pump.Energy-saving and emission-reduction, cost efficiency are realized without rinsing design.
4, protection against erosion design
Desulfurization slurry recycle pump anhydrous mechanical seal structure, fixes an erosion control brush board in the outside of end cap by screw, and the coated one deck stellite of this erosion control brush board; Effective alleviation gypsum slurries washes away end cap, has improved greatly the working life of slurry circulating pump mechanical seal structure, has improved the desulphurization efficiency of power plant simultaneously.
Although content of the present utility model has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to restriction of the present utility model.Read after foregoing those skilled in the art, for multiple modification of the present utility model and substitute will be all apparent.Therefore, protection domain of the present utility model should be limited to the appended claims.
Claims (8)
1. a desulfurization slurry recycle pump anhydrous mechanical seal structure, is characterized in that, anhydrous mechanical seal structure comprises: moving ring assembly (10) and static components (20);
Described moving ring assembly (10) is arranged on pump shaft (100); Described moving ring assembly (10) comprises: sealing axle sleeve (11), rotating ring (12) and driving ring (14); Described sealing axle sleeve (11) is arranged on pump shaft (100), described rotating ring (12) is connected with sealing axle sleeve (11) by straight pin (13), and described driving ring (14) is connected with sealing axle sleeve (11) by interior hexagonal jackscrew (15);
Described static components (20) is arranged on the pump case of desulfurization slurry recycle pump; Described static components (20) comprises: end cap (21), throw-out collar (22), stationary ring (23), multiple spring (24), stop pin (26) and erosion control brush board (28); Described end cap (21) is arranged on the pump case of desulfurization slurry recycle pump, described erosion control brush board (28) is connected with this end cap (21) by screw (27), described spring (24), described throw-out collar (22) are connected with this end cap (21) by attachment screw (25), and described stationary ring (23) is connected with this throw-out collar (22) by stop pin (26); Described stationary ring (23) fits tightly with described rotating ring (12).
2. desulfurization slurry recycle pump anhydrous mechanical seal structure as claimed in claim 1, is characterized in that, described erosion control brush board (28) is to be made up of stainless steel, the coated one deck alloy in surface of this erosion control brush board (28).
3. desulfurization slurry recycle pump anhydrous mechanical seal structure as claimed in claim 1, it is characterized in that, described multiple springs (24) are arranged on the threaded stem (252) of the attachment screw (25) between screw head (251) and the described throw-out collar (22) of described attachment screw (25).
4. desulfurization slurry recycle pump anhydrous mechanical seal structure as claimed in claim 1, is characterized in that, described moving ring assembly (10) also comprises multiple moving ring assembly O-ring seals (18); Between described sealing axle sleeve (11) and pump shaft (100), be provided with moving ring assembly O-ring seals (18), between described rotating ring (12) and sealing axle sleeve (11), be provided with moving ring assembly O-ring seals (18).
5. desulfurization slurry recycle pump anhydrous mechanical seal structure as claimed in claim 1, is characterized in that, described static components (20) also comprises multiple static components O-ring seals (29); Between described end cap (21) and the pump case of desulfurization slurry recycle pump, be provided with static components O-ring seals (29) press seal, between described stationary ring (23) and this end cap (21), be provided with this static components O-ring seals (29).
6. desulfurization slurry recycle pump anhydrous mechanical seal structure as claimed in claim 1, it is characterized in that, described moving ring assembly (10) also comprises positioning plate (16), and described positioning plate (16) is connected with described throw-out collar (22), end cap (21) by socket head screw (17).
7. desulfurization slurry recycle pump anhydrous mechanical seal structure as claimed in claim 1, it is characterized in that, between described stationary ring (23) and described sealing axle sleeve (11), be provided with gap, between described throw-out collar (22) and described sealing axle sleeve (11), be provided with gap.
8. desulfurization slurry recycle pump anhydrous mechanical seal structure as claimed in claim 1, is characterized in that, described rotating ring (12) is gap by straight pin (13) with described sealing axle sleeve (11) and is connected; Between the axial vane surface of this rotating ring (12) and described sealing axle sleeve (11), be provided with gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320702059.6U CN203604243U (en) | 2013-11-08 | 2013-11-08 | Anhydrous mechanical sealing structure for desulfuration slurry circulating pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320702059.6U CN203604243U (en) | 2013-11-08 | 2013-11-08 | Anhydrous mechanical sealing structure for desulfuration slurry circulating pump |
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| Publication Number | Publication Date |
|---|---|
| CN203604243U true CN203604243U (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320702059.6U Expired - Fee Related CN203604243U (en) | 2013-11-08 | 2013-11-08 | Anhydrous mechanical sealing structure for desulfuration slurry circulating pump |
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| CN (1) | CN203604243U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114354A (en) * | 2015-08-25 | 2015-12-02 | 张家港市三利密封合金材料有限公司 | Mechanical seal for desulphurization pump |
| CN106468287A (en) * | 2015-08-20 | 2017-03-01 | 宇航航天装备有限公司 | A kind of centrifugal pump specialized high-speed swivel joint |
| CN109340171A (en) * | 2018-11-23 | 2019-02-15 | 广州凯里莱电气机械有限公司 | A kind of spring external anhydrous mechanical seal structure |
-
2013
- 2013-11-08 CN CN201320702059.6U patent/CN203604243U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106468287A (en) * | 2015-08-20 | 2017-03-01 | 宇航航天装备有限公司 | A kind of centrifugal pump specialized high-speed swivel joint |
| CN105114354A (en) * | 2015-08-25 | 2015-12-02 | 张家港市三利密封合金材料有限公司 | Mechanical seal for desulphurization pump |
| CN109340171A (en) * | 2018-11-23 | 2019-02-15 | 广州凯里莱电气机械有限公司 | A kind of spring external anhydrous mechanical seal structure |
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| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140521 Termination date: 20211108 |