CN202100519U - Anti-leakage device of drying centrifugal fan - Google Patents
Anti-leakage device of drying centrifugal fan Download PDFInfo
- Publication number
- CN202100519U CN202100519U CN2011201745672U CN201120174567U CN202100519U CN 202100519 U CN202100519 U CN 202100519U CN 2011201745672 U CN2011201745672 U CN 2011201745672U CN 201120174567 U CN201120174567 U CN 201120174567U CN 202100519 U CN202100519 U CN 202100519U
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- air
- labyrinth
- leakage
- sealing
- graphite packing
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model discloses an anti-leakage device of a drying centrifugal fan, which is provided with a sealing structure arranged at a position of a gap of a transmission shaft and fixed on a rear lateral board of the fan. The sealing structure is sealed through graphite packing and provided with an air-sealing ring with an I-shaped section. The graphite packing is arranged in a sealing cavity of the air-sealing ring, and the end portion is firmly pressed by a pressing plate through bolts. A dumbbell-shaped middle joint is arranged in the sealing cavity, and the air-sealing ring at the position of the middle joint is provided with an air outlet which is connected to an air inlet of the fan through a connecting tube. Compared with the prior art, the amount of steam leaked from a shaft end is reduced, and the anti-leakage device can be adjusted according to steam leakage conditions at any time, is convenient to maintain, saves cost, improves working environment, and has remarkable economic benefit.
Description
Technical field
the utility model belongs to the blower fan technical field, is specifically related to a kind of leakage preventer of dry centrifugal blower.
Background technique
efficient flash drying blower fan has been widely used in the Dry run of dispersed material, and the key equipment of this system is a centrifugal blower.Its effect has following 2 points: 1, carry the drying medium air, produce gas flow, temperature is 160-200 ℃; 2, increase desiccated surface and amass, improve drying rate.But existing drying air fan following point occurs through regular meeting: 1, the back side panel of blower fan and transmission shaft gap location leak, and high temperature air leaks and causes unnecessary waste and environmental pollution; 2, the steam of revealing gets into bearing housing, causes that lubricated oil content is rotten, damages bearing, causes the blower fan vibrations.Existing solution be axle head increase barge board or in axle head increases by one with 3 range upon range of, outer simple and easy mechanical labyrinth rings of fixing of outside framework oil seal.Labyrinth ring in use has disadvantage: 1, reveal as the blocking-up high-temperature steam with oil sealing, material is fragile, causes whole labyrinth ring to damage, and life cycle only 3 months, the expense of each labyrinth ring are 2800 yuan.2, this labyrinth ring does not have the adjusting surplus, and is more fastening when just starting shooting, the palpus auxiliary temperature-reducing, otherwise the arbor temperature rise is too high, arbor occurs and at high temperature reddens, and then guarantee to produce with water for cooling, do the arbor influence relatively poor like this than the maintainalbility of big and packing equipment.
The model utility content
for solving the above-mentioned defective that existing technology exists, the purpose of the utility model is to provide a kind of good seal performance, the leakage preventer of dry centrifugal blower easy to adjust.
are for realizing above-mentioned purpose; The technological scheme that the utility model adopts: the leakage preventer of this drying centrifugal blower, have and be arranged on the transmission shaft interstitial site and be fixed on the sealing configuration on the blower fan back side panel, it is characterized in that: said sealing configuration is the graphite packing_seal; Having the cross section is I-shaped labyrinth ring; Be provided with the graphite packing in the Seal cage of labyrinth ring, the end is compressed through bolt by platen, in Seal cage, is provided with segmentum intercalaris in the dumbbell shaped; The labyrinth ring of middle segmentum intercalaris position has the air outlet, and the air outlet is connected to air inlet through connecting tube.
The inboard many rings labyrinth device that increases of
said blower fan back side panel, said many rings labyrinth device is that a plurality of donuts constitute.
The beneficial effect of technique scheme is adopted in
: the sealed material of the leakage preventer of this drying centrifugal blower adopts the graphite packing to replace outside framework oil seal; Good seal performance, leakage rate are few; Adjustable bolt can be regulated according to quantity of gas leakage at any time.Segmentum intercalaris in the design dumbbell shaped in Seal cage, the gas that leaks from blower fan end plate root is connected to air inlet through middle segmentum intercalaris through connecting tube, and this is a negative pressure state, has avoided the leakage of high temperature gas.The inboard many rings labyrinth device that increases of blower fan back side panel.Because blower fan forms zone of high pressure and two zones of low pressure area in the blower fan in the impeller operation process.Gas flows to outside the machine from the gap of high pressure through impeller and back side panel.Between impeller and back side panel, increase a plurality of donuts; Gas flowed to outside the machine through the gap of impeller and back side panel from high pressure when draught fan impeller rotated, and when flowing through several donuts, similar labyrinth ring flows; Leakage rate reduces; Fluid between annulus is made circular movement with impeller simultaneously, and centrifugal force makes gas flow to the zone of high pressure, has further reduced leakage rate.Compared with prior art, the utility model reduces the steam leakage amount from axle head, and labyrinth ring can really play the packing effect; Can regulate at any time according to the steam leakage situation, integral replacing labyrinth ring not during maintenance, only part is changed aging filler and is got final product; Reduce expenses; Thereby the shutdown number of times is significantly reduced, make working environment improve remarkable in economical benefits.
Description of drawings
are done further detailed explanation below in conjunction with accompanying drawing to the specific embodiment of the utility model.
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the view that shows of many rings labyrinth device.
Embodiment
Like the leakage preventer of Fig. 1, the dry centrifugal blower shown in 2, this leakage preventer is located at the interstitial site between transmission shaft 5 and the blower fan side plate 1, and is fixed on the blower fan back side panel 1
.Said sealing configuration is the graphite packing_seal; It has axial cross section is I-shaped labyrinth ring, is provided with graphite packing 7 in the Seal cage of labyrinth ring, and the end is compressed through bolt by platen 4; In Seal cage, be provided with segmentum intercalaris 6 in the dumbbell shaped; The labyrinth ring of middle segmentum intercalaris position has air outlet 3, and air outlet 3 is connected to air inlet through connecting tube 2, and the gas that leaks from blower fan end plate root is connected to air inlet through middle segmentum intercalaris through connecting tube.The inboard many rings labyrinth device that increases of said blower fan back side panel, said many rings labyrinth device is that a plurality of donuts 8 constitute.Gas flowed to outside the machine through the gap of impeller and back side panel from high pressure when draught fan impeller rotated, and when flowing through several donuts, similar labyrinth ring flows; Leakage rate reduces; Fluid between annulus is made circular movement with impeller simultaneously, and centrifugal force makes gas flow to the zone of high pressure, has further reduced leakage rate.
Claims (2)
1. the leakage preventer of a dry centrifugal blower has and is arranged on the transmission shaft interstitial site and is fixed on the sealing configuration on the blower fan back side panel, and it is characterized in that: said sealing configuration is the graphite packing_seal; Having the cross section is I-shaped labyrinth ring; Be provided with the graphite packing in the Seal cage of labyrinth ring, the end is compressed through bolt by platen, in Seal cage, is provided with segmentum intercalaris in the dumbbell shaped; The labyrinth ring of middle segmentum intercalaris position has the air outlet, and the air outlet is connected to air inlet through connecting tube.
2. the leakage preventer of dry centrifugal blower according to claim 1 is characterized in that: the inboard many rings labyrinth devices that increase of said blower fan back side panel, said many rings labyrinth devices are that a plurality of donuts constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201745672U CN202100519U (en) | 2011-05-27 | 2011-05-27 | Anti-leakage device of drying centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201745672U CN202100519U (en) | 2011-05-27 | 2011-05-27 | Anti-leakage device of drying centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202100519U true CN202100519U (en) | 2012-01-04 |
Family
ID=45386534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201745672U Expired - Fee Related CN202100519U (en) | 2011-05-27 | 2011-05-27 | Anti-leakage device of drying centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202100519U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI613366B (en) * | 2016-11-16 | 2018-02-01 | 財團法人紡織產業綜合研究所 | Air flow generating device |
-
2011
- 2011-05-27 CN CN2011201745672U patent/CN202100519U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI613366B (en) * | 2016-11-16 | 2018-02-01 | 財團法人紡織產業綜合研究所 | Air flow generating device |
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Legal Events
| 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 |
Granted publication date: 20120104 Termination date: 20160527 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |