CN202708086U - Labyrinth seal structure used between housing and rotary drum of horizontal screw centrifugal machine - Google Patents
Labyrinth seal structure used between housing and rotary drum of horizontal screw centrifugal machine Download PDFInfo
- Publication number
- CN202708086U CN202708086U CN2012203750862U CN201220375086U CN202708086U CN 202708086 U CN202708086 U CN 202708086U CN 2012203750862 U CN2012203750862 U CN 2012203750862U CN 201220375086 U CN201220375086 U CN 201220375086U CN 202708086 U CN202708086 U CN 202708086U
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- Prior art keywords
- ring
- labyrinth
- rotary drum
- flinger
- seal
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- 238000007789 sealing Methods 0.000 claims abstract description 17
- 239000000446 fuel Substances 0.000 claims description 3
- 230000001050 lubricating effect Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 11
- 230000007246 mechanism Effects 0.000 abstract description 3
- 239000007787 solid Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 11
- 239000012530 fluid Substances 0.000 description 6
- 239000000314 lubricant Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000008602 contraction Effects 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000000470 constituent Substances 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
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- Centrifugal Separators (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model discloses a labyrinth seal structure used between a housing and a rotary drum of a horizontal screw centrifugal machine, belonging to a mechanical liquid sealing mechanism. The labyrinth seal structure comprises a flinger ring, wherein the flinger ring is arranged at the outer side of one end of the rotary drum and fixedly arranged on one side of the housing, the seal structure also internally comprises a labyrinth ring, the labyrinth ring is fixedly arranged on one end of the rotary drum and arranged below the flinger ring, a clearance is kept between the labyrinth ring and the flinger ring, at least two annular grooves are also arranged in the labyrinth ring, and seal rings are closely contacted with the bottoms of the annular grooves in the labyrinth ring as well as the lower side of the flinger ring. The clearance is kept between the labyrinth ring and the flinger ring without solid contact, thereby allowing the existence of heat expansion and being applicable to use situations with high temperature, high pressure and high rotating frequency; and the labyrinth seal structure is simple, the seal rings in the annular grooves in the labyrinth ring are easy to replace, and the labyrinth seal structure can be directly installed and used on the existing horizontal screw centrifugal machine, thereby being wide in application range.
Description
Technical field
The utility model relates to a kind of mechanical liquid sealing mechanism, and in particular, the utility model relates generally to a kind of for the labyrinth seal structure between horizontal helico-centrifuger case and the rotary drum.
Background technique
At present, horizontal type screw settling centrifuge (hereinafter to be referred as horizontal helico-centrifuger) has been widely used in solid-liquid separation and the dehydration of the industries such as dehydrating municipal sludge, Plant Sludge dehydration, industrial and agricultural wastewater processing, petrochemical industry, food, pharmacy.Traditional Drum of Horizontal Screw Centrifuge Based and the sealing configuration between the case adopt water holding ring 52 as sealing configuration as shown in Figure 1, and case 54 forms Seal cage with bent plate 51, with Cock screw 55 water holding ring 52 is fixed on the rotary drum 53.When the situations such as centrifuge treating is lower in running speed, inlet amount is larger, clear liquid easily flows out from the gap between case 54 and the water holding ring 52.Have in petrochemical industry, food etc. especially and can't satisfy corresponding leakproof requirement in the special industry, therefore be necessary to do further to improve for the sealing configuration between Drum of Horizontal Screw Centrifuge Based 53 and the case 54.
The model utility content
One of the purpose of this utility model is to solve above-mentioned deficiency, provide a kind of for the labyrinth seal structure between horizontal helico-centrifuger case and the rotary drum, not thorough with the sealing configuration sealing between Drum of Horizontal Screw Centrifuge Based and the case in the expectation solution prior art, fluid seepage easily occurs, and can't satisfy the technical problem such as part special industry demand.
For solving above-mentioned technical problem, the utility model by the following technical solutions:
Provided by the utility model a kind of for the labyrinth seal structure between horizontal helico-centrifuger case and the rotary drum, comprise flinger ring, and flinger ring places the outside of rotary drum one end, described flinger ring is fixed on the side of case, also comprise labyrinth ring in the described sealing configuration, labyrinth ring is fixed on the end of rotary drum and places the flinger ring below, and keep the gap between labyrinth ring and the flinger ring, also be provided with at least two annular grooves on the described labyrinth ring, described at least two annular grooves all or wherein partial interior are provided with seal ring, annular groove bottom on described seal ring and the labyrinth ring, and the equal close contact of the downside of flinger ring.
Further technological scheme is: the oil storage mouth also is installed on the described flinger ring, and also be provided with the oil discharge passage that matches with described oil storage mouth on the flinger ring, the oil outlet of described oil discharge passage places near the seal ring, makes between flinger ring downside and the seal ring by the outside fuel feeding of oil storage mouth to obtain effectively lubricating.
Further technological scheme is: the annular groove on the described labyrinth ring is three, wherein axially be provided with seal ring in two inside of outside near rotary drum, another annular groove inside does not arrange seal ring, and this annular groove is communicated with the gap between flinger ring and the labyrinth ring.
Further technological scheme is: described flinger ring downside also is provided with an annular groove, and the annular groove that seal ring is not set on position and the labyrinth ring is corresponding, and the annular groove of described flinger ring downside also is communicated with the gap between flinger ring and the labyrinth ring.
Further technological scheme is: also be provided with an annular extension block to the extension of rotary drum radial center on the described flinger ring, described annular extension block is positioned at labyrinth ring near on the end of rotary drum axial inner, and should the annular extension block and rotary drum between keep the gap, the gap between described annular extension block and the rotary drum and labyrinth ring are connected with gap between the flinger ring.
Further technological scheme is: the oil discharge passage on the described flinger ring and the cross section of labyrinth ring are perpendicular, and the oil outlet of described oil discharge passage places inner being provided with between two annular grooves of seal ring on the labyrinth ring.
Further technological scheme is: the seal ring on the described labyrinth ring in the annular groove is four one group seal ring group.
Further technological scheme is: described flinger ring is bolted on the side of case, and described labyrinth ring is fixed by screws on the end of rotary drum.
Compared with prior art, one of the beneficial effects of the utility model are: by cooperating between labyrinth ring and the flinger ring, make between the rotary drum of horizontal helico-centrifuger and the case and have all the time a series of ring-shaped throttling gaps that are arranged in order and expansion cavity, make through horizontal helico-centrifuger and process the clear liquid obtain when the gap by tortuous labyrinth, because the impact of inertia produces contraction, the cross section of a fluid stream also will diminish, and then generation throttle effect, simultaneously and flinger ring and labyrinth ring between under the effect of seal ring of close contact, also further prevented liquid generation seepage, thereby reach the purpose of Drain Resistance between rotary drum and the case, and owing to having the gap between the flinger ring of labyrinth seal and the labyrinth ring, without the solid contact, therefore allowed thermal expansion, adapt to high temperature, high pressure, the use occasion of high speed, and of the present utility model simple in structure, seal ring on the labyrinth ring in the annular groove is easily changed, and can directly install and use at existing horizontal helico-centrifuger, and application area is wide.
Description of drawings
Fig. 1 is for being used for the sealed structural representation of explanation the utility model background technique;
Fig. 2 is for being used for a kind of embodiment's of explanation the utility model structural representation.
Among the figure, 1 is that flinger ring, 11 is that oil storage mouth, 12 is that oil discharge passage, 121 is that oil outlet, 13 is that annular groove, 14 is that annular extension block, 2 is that rotary drum, 3 is that case, 4 is that labyrinth ring, 41 is that annular groove, 42 is seal ring.
Embodiment
Below in conjunction with accompanying drawing the utility model is further elaborated.
Fig. 2 shows structural representation of the present utility model, with reference to shown in Figure 2, the first embodiment of the present utility model is a kind of for the labyrinth seal structure between horizontal helico-centrifuger case and the rotary drum, comprise flinger ring 1 in the sealing structure, and flinger ring 1 places the outside of rotary drum 2 one ends, flinger ring 1 is fixed on the side of case 3, and also comprise labyrinth ring 4 in the sealing configuration of the present utility model, labyrinth ring 4 is fixed on the end of rotary drum 2 and places the below of flinger ring 1, and keep the gap between labyrinth ring 4 and the flinger ring 1, and also be provided with at least two annular grooves 41 on the labyrinth ring 4, at least two annular grooves 41 all or wherein partial interior are provided with seal ring 42, annular groove 41 bottoms on seal ring 42 and the labyrinth ring 4, and the equal close contact of the downside of flinger ring 1, annular groove 41 in the present embodiment on the labyrinth ring 4 has two purposes, the first purposes be and labyrinth ring 4 and flinger ring 1 between Spielpassung form labyrinth structure, thereby flow rate of liquid is slowed down, specific discharge reduces, simultaneously because fluid passes through the labyrinth sealing, can produce contraction because of the impact of inertia, the cross section of a fluid stream also will diminish, thereby realize effective Drain Resistance effect; The second purposes is to realize hermetically sealed by its inner seal ring that arranges 42, and the seal ring 42 of mentioning in the present embodiment, can arrange in each annular groove 41 inside, also can be only according to the actual requirements, partial interior setting in a plurality of annular grooves 41 makes sealing configuration have simultaneously throttling Drain Resistance and complete hermetic effect.
Again with reference to shown in Figure 2, another embodiment who is used for solution the utility model technical problem installs oil storage mouth 11 at above-mentioned flinger ring 1, and also be provided with the oil discharge passage 12 that matches with oil storage mouth 11 on the flinger ring 1, the oil outlet 121 of described oil discharge passage 12 places near the seal ring 42, the effect of oil storage mouth 11 is that outside fuel feeding makes between flinger ring 1 downside and the seal ring 42 and obtains effectively lubricating, avoids long-term because of seal ring 42 and flinger ring 1 downside friction makes its loss comparatively fast cause seal failure.Need to prove, lubricant oil in the oil storage mouth 11 is directly to infiltrate to form between seal ring 42 and flinger ring 1 downside to lubricate, and all have certain viscosity owing to entering the liquid of sealing configuration, therefore can not be leaked by the lubrication gap between seal ring 42 and flinger ring 1 downside.
According to another embodiment of the utility model: more preferably the annular groove 41 on the above-mentioned labyrinth ring 4 is set to as shown in Figure 2 three, wherein axially be provided with seal ring 42 in two inside of outside near rotary drum 2, another annular groove 41 inside do not arrange seal ring 42, and the gap that this annular groove 41 is communicated with between flinger ring 1 and the labyrinth ring 4, and for further improving the labyrinth effect of sealing configuration, also can improve flinger ring 1, below think comparatively preferred flinger ring 1 corrective measure for the inventor, namely at flinger ring 1 downside one annular groove 13 is set also, and the annular groove 41 that seal ring 42 is not set on position and the labyrinth ring 4 is corresponding, and the annular groove 13 of described flinger ring 1 downside also is communicated with the gap between flinger ring 1 and the labyrinth ring 4.
Refer again to shown in Figure 2, the utility model is used for the technical solution problem, also provide a kind of labyrinth structure more perfect, and another embodiment who is more preferably, namely at above-mentioned flinger ring 1 an annular extension block 14 to the extension of rotary drum 2 radial center is set, described annular extension block 14 is positioned at labyrinth ring 4 near on the end of rotary drum 2 axial inner, and should annular extension block 14 and rotary drum 2 between keep the gap, the gap between described annular extension block 14 and the rotary drum 2 and labyrinth ring 4 are connected with gap between the flinger ring 1.The effect of this annular extension block 14 is to match with annular groove on the labyrinth ring 4 with flinger ring 1, forms more staggered complicated sealing mechanism, increases the convergent-divergent number of times of liquid, to realize the more excellent restriction effect of the utility model.
Again according to another embodiment of the present utility model, with reference to shown in Figure 2, oil discharge passage 12 on the described flinger ring 1 is perpendicular with the cross section of labyrinth ring 4, its purpose is that the lubricant oil in the oil storage mouth 11 is flowed out by oil outlet 121 with the shortest channel distance, and the oil outlet 121 of oil discharge passage 12 places inner being provided with between two annular grooves 41 of seal ring 42 on the labyrinth ring 4, so that can entering to form between seal ring 42 and the flinger ring 1 uniformly, lubricates by the lubricant oil that is flowed into by oil storage mouth 11, in actual use, lubricant oil in the oil storage mouth 11 can be by the adding of small cross sections area oil discharge passage 12 continuous micros (be preferably diameter of section be 2 to 4 millimeters circular oil discharge passage 12), regularly relay system adding lubricant oil at regular time and quantity also can be installed, and the inventor thinks when specifically testing, not only lubrication effect is excellent for the mode of employing oil storage mouth 11 continuous micros adding lubricant oil, also can save lubrication oil consumption.
And the seal ring 42 in the annular groove 41 on the described labyrinth ring 4 of mentioning in the utility model above-described embodiment, change for ease of wearing and tearing, preferably adopt four one group seal ring group, like this when wearing and tearing need to change, change serious wear in only needing more four one, further reduce user cost.And above-mentioned flinger ring 1 is fixed on flinger ring 1 on the side of case 3 for ease of changing, being preferably with labyrinth ring 4 by bolt 5, described labyrinth ring 4 is fixed on the end of rotary drum 2 by screw 6.And according to aforesaid means of fixation, adopt the mode of welding also can reach identical technique effect, but be not easy to the replacing of flinger ring 1 and labyrinth ring 4.
Of the present utility model for the labyrinth seal structure between horizontal helico-centrifuger case and the rotary drum, by forming complicated labyrinth structure between flinger ring 1 and the labyrinth ring 4, so that liquid produces the labyrinth effect when flowing in the labyrinth, namely produce friction because of liquid viscosity, flow velocity is slowed down, flow (being leakage rate) reduces, simultaneously because fluid (is the gap between flinger ring 1 and the labyrinth ring 4 by the labyrinth sealing, and the annular extension block 14 on the flinger ring 1 and the gap between the rotary drum 2), can produce contraction principle because of the impact of inertia, the cross section of a fluid stream also will diminish, thereby realize effective Drain Resistance, and because there are the gap in flinger ring 1 and 4 of the labyrinth rings of labyrinth seal, so contact without solid between them, allowed thermal expansion, can adapt to high temperature in actual use, high pressure, the use of high speed, and simple in structure, seal ring 42 is easily changed, directly retrofit application on existing horizontal helico-centrifuger.
Also need to prove, " embodiment " who speaks of in this manual, " another embodiment ", " embodiment ", etc., refer to specific features, structure or the characteristics described in conjunction with this embodiment and be included among at least one embodiment that the application's generality describes.A plurality of local appearance statement of the same race is not necessarily to refer to same embodiment in specification.Furthermore, when describing a specific features, structure or characteristics in conjunction with arbitrary embodiment, what advocate is to realize that in conjunction with other embodiments this feature, structure or characteristics also drop in the scope of the present utility model.
Although with reference to a plurality of explanatory embodiments of the present utility model the utility model is described here, but, should be appreciated that, those skilled in the art can design a lot of other modification and mode of executions, and these are revised and mode of execution will drop within the disclosed principle scope and spirit of the application.More particularly, in the scope of, accompanying drawing open in the application and claim, can carry out multiple modification and improvement to constituent elements and/or the layout of subject combination layout.Except modification that constituent elements and/or layout are carried out with improving, to those skilled in the art, other purposes also will be obvious.
Claims (8)
1. labyrinth seal structure that is used between horizontal helico-centrifuger case and the rotary drum, comprise flinger ring (1), and flinger ring (1) places the outside of rotary drum (2) one ends, it is characterized in that: described flinger ring (1) is fixed on the side of case (3), also comprise labyrinth ring (4) in the described sealing configuration, labyrinth ring (4) is fixed on the end of rotary drum (2) and places flinger ring (1) below, and keep the gap between labyrinth ring (4) and the flinger ring (1), also be provided with at least two annular grooves (41) on the described labyrinth ring (4), described at least two annular grooves (41) all or wherein partial interior are provided with seal ring (42), described seal ring (42) and the upper annular groove (41) of labyrinth ring (4) bottom, and the equal close contact of downside of flinger ring (1).
2. according to claim 1 for the labyrinth seal structure between horizontal helico-centrifuger case and the rotary drum, it is characterized in that: oil storage mouth (11) also is installed on the described flinger ring (1), and also be provided with the oil discharge passage (12) that matches with described oil storage mouth (11) on the flinger ring (1), the oil outlet (121) of described oil discharge passage (12) places near the seal ring (42), makes between flinger ring (1) downside and the seal ring (42) by the outside fuel feeding of oil storage mouth (11) to obtain effectively lubricating.
3. according to claim 1 and 2 for the labyrinth seal structure between horizontal helico-centrifuger case and the rotary drum, it is characterized in that: the annular groove (41) on the described labyrinth ring (4) is three, wherein axially be provided with seal ring (42) in two inside of outside near rotary drum (2), another annular groove (41) inside does not arrange seal ring (42), and this annular groove (41) is communicated with the gap between flinger ring (1) and the labyrinth ring (4).
4. according to claim 3 for the labyrinth seal structure between horizontal helico-centrifuger case and the rotary drum, it is characterized in that: described flinger ring (1) downside also is provided with an annular groove (13), and the annular groove (41) that seal ring (42) are not set on position and the labyrinth ring (4) is corresponding, and the annular groove (13) of described flinger ring (1) downside also is communicated with the gap between flinger ring (1) and the labyrinth ring (4).
5. according to claim 4 for the labyrinth seal structure between horizontal helico-centrifuger case and the rotary drum, it is characterized in that: also be provided with an annular extension block (14) to the extension of rotary drum (2) radial center on the described flinger ring (1), described annular extension block (14) is positioned at labyrinth ring (4) near on the end of rotary drum (2) axial inner, and should annular extension block (14) and rotary drum (2) between keep the gap, the gap between described annular extension block (14) and the rotary drum (2) and labyrinth ring (4) are connected with gap between the flinger ring (1).
6. according to claim 3 for the labyrinth seal structure between horizontal helico-centrifuger case and the rotary drum, it is characterized in that: the oil discharge passage (12) on the described flinger ring (1) is perpendicular with the cross section of labyrinth ring (4), and the oil outlet (121) of described oil discharge passage (12) places the upper inside of labyrinth ring (4) to be provided with between two annular grooves (41) of seal ring (42).
7. according to claim 1 for the labyrinth seal structure between horizontal helico-centrifuger case and the rotary drum, it is characterized in that: the seal ring (42) in the upper annular groove (41) of described labyrinth ring (4) is four one group seal ring group.
8. according to claim 1 for the labyrinth seal structure between horizontal helico-centrifuger case and the rotary drum, it is characterized in that: described flinger ring (1) is fixed on by bolt (5) on the side of case (3), and described labyrinth ring (4) is fixed on the end of rotary drum (2) by screw (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203750862U CN202708086U (en) | 2012-07-31 | 2012-07-31 | Labyrinth seal structure used between housing and rotary drum of horizontal screw centrifugal machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203750862U CN202708086U (en) | 2012-07-31 | 2012-07-31 | Labyrinth seal structure used between housing and rotary drum of horizontal screw centrifugal machine |
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| Publication Number | Publication Date |
|---|---|
| CN202708086U true CN202708086U (en) | 2013-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203750862U Expired - Fee Related CN202708086U (en) | 2012-07-31 | 2012-07-31 | Labyrinth seal structure used between housing and rotary drum of horizontal screw centrifugal machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202708086U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818033A (en) * | 2012-07-31 | 2012-12-12 | 天圣环保工程（成都）有限公司 | Labyrinth seal structure used between horizontal screw centrifugal machine housing and drum |
| CN104785382A (en) * | 2015-03-30 | 2015-07-22 | 绿水分离设备股份有限公司 | Closed anti-explosion mechanism of horizontal spiral discharging sedimentation centrifuge |
| WO2016046704A1 (en) * | 2014-09-25 | 2016-03-31 | Flsmidth A/S | Centrifuge seals and sealing arrangements and centrifuges containing the same |
-
2012
- 2012-07-31 CN CN2012203750862U patent/CN202708086U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818033A (en) * | 2012-07-31 | 2012-12-12 | 天圣环保工程（成都）有限公司 | Labyrinth seal structure used between horizontal screw centrifugal machine housing and drum |
| CN102818033B (en) * | 2012-07-31 | 2015-04-08 | 天圣环保工程（成都）有限公司 | Labyrinth seal structure used between horizontal screw centrifugal machine housing and drum |
| WO2016046704A1 (en) * | 2014-09-25 | 2016-03-31 | Flsmidth A/S | Centrifuge seals and sealing arrangements and centrifuges containing the same |
| US10300498B2 (en) | 2014-09-25 | 2019-05-28 | Flsmidth A/S | Centrifuge seals and sealing arrangements and centrifuges containing the same |
| CN104785382A (en) * | 2015-03-30 | 2015-07-22 | 绿水分离设备股份有限公司 | Closed anti-explosion mechanism of horizontal spiral discharging sedimentation centrifuge |
| CN104785382B (en) * | 2015-03-30 | 2018-03-16 | 绿水股份有限公司 | Horizontal spiral discharge sedimentation centrifuge tight anti-explosion structure |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 Termination date: 20210731 |
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| CF01 | Termination of patent right due to non-payment of annual fee |