CN204493729U - Exciting device for dust atmosphere seals quiet dish, Moving plate and labyrinth gland - Google Patents
Exciting device for dust atmosphere seals quiet dish, Moving plate and labyrinth gland Download PDFInfo
- Publication number
- CN204493729U CN204493729U CN201520074563.5U CN201520074563U CN204493729U CN 204493729 U CN204493729 U CN 204493729U CN 201520074563 U CN201520074563 U CN 201520074563U CN 204493729 U CN204493729 U CN 204493729U
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- quiet dish
- moving plate
- bearing
- trapezoidal
- end surface
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Abstract
The utility model discloses a kind of exciting device for dust atmosphere and seal quiet dish, Moving plate and labyrinth gland, the operative end surface sealing quiet dish and Moving plate is equipped with trapezoidal convex annular tooth, and convex annular tooth and described operative end surface form at least one trapezoidal hollow toroid groove; The counterface of Moving plate and quiet dish forms the labyrinth seal clearance that radial direction is trapezoidal angle; Bearing support is provided with grease fitting, and grease fitting is by the inner of oilhole successively UNICOM's bearing and described labyrinth seal clearance; The beneficial effects of the utility model are the labyrinth seal clearances replacing right-angle line in the past with the labyrinth seal clearance at trapezoidal angle, change the angle of repose of dust granules, make it be difficult to pile up in seal clearance, be detained; The utility model can effectively stop dust granules to enter between bearing enclose, and is taken out of by the dust granules entered, and without the need to lip-shaped sealed ring and dust ring, extends the working life of bearing, reduces equipment failure rate.
Description
Technical field
The utility model relates to the dust sealing technical field of the transmission system for industries such as coal, mine, building materials, is specially a kind of exciting device for dust atmosphere and seals quiet dish, Moving plate and labyrinth gland.
Background technique
Labyrinth seal is often used to the sealing of Large-Scale Equipment transmission system axle and each inter-stage, and it is the belt sealing tooth establishing several to be arranged in order around rotating shaft, forms a series of labyrinth gap and expansion cavity, to reach sealing purpose between tooth and tooth; Without solid contact friction between this sealing configuration, needn't lubricate, and allow thermal expansion, adapt to the occasion of high temperature, high pressure, high speed-frequency.
In existing coal separation Mineral Processing Industry, vibrosieve equipment is widely used, the eccentric vibrator of its excitation system is installed in transmission main shaft two ends, rotate with transmission main shaft, the sealing configuration at the bearing place of main shaft mainly adopts above-mentioned labyrinth seal mode, labyrinth seal is formed primarily of Moving plate and quiet dish, as shown in Figure 1, Moving plate 101 and transmission main shaft 102 are fixed, rotate with main shaft 102, quiet dish 103 links together with bearing support static structure, and quiet dish 103 is relative with between Moving plate 101, main shaft 102 to run up; Its working principle utilizes the tortuous close clearance 104 of the right angle line style formed between Moving plate 101 and quiet dish 103, the dust granules that just most of particle diameter can be stoped to be greater than labyrinth seal clearance enters labyrinth seal indoor, even and if in the seal clearance in close outside that enters of a part of dust, tooth staggered cooperation theing be many rings due to labyrinth seal lengthens path, dust seal clearance inner terminal more difficult to get access; And two of relative movement dishes produce centrifugal force, increase the resistance that dust enters closed chamber to a certain extent.
Because the working site dust such as coal separation ore dressing are large, still have granule dust to enter in closed chamber, and be deposited in the position, right angle of seal clearance, lip-type packing 105 or dust ring is furnished with between the quiet dish 103 of labyrinth seal and main shaft 102, bearing is entered with the fine dust particles of its entry deterrence labyrinth seal, but run up because quiet dish is relative with between main shaft, granule dust, especially the dust at position, seal clearance right angle is deposited in, still can enter between lip-type packing and main shaft, and along with relatively rotating, very easily cause the wearing and tearing of lip-type packing, the inefficacy of such lip-type packing makes dust granules enter between bearing enclose, cause bearing enclose to wear and tear and cause bearing ultimate failure, then whole screening plant is caused normally to work.
In view of this, special proposition the utility model.
Model utility content
The technical problems to be solved in the utility model is to overcome the deficiencies in the prior art, the labyrinth gland on the exciting device of dust atmosphere that a kind of exciting device for dust atmosphere seals quiet dish, Moving plate and is made up of this dynamic and static dish is provided, to solve the problem of exciting device sealing effect difference on the large vibrosieve equipment of various dust content, reduce equipment failure rate.
For solving the problems of the technologies described above, the basic conception of the utility model employing technological scheme is:
Exciting device for dust atmosphere seals a quiet dish, and the operative end surface sealing quiet dish is provided with trapezoidal convex annular tooth, and convex annular tooth and described operative end surface form at least one trapezoidal hollow toroid groove; Described trapezoidal drift angle is greater than 110 ° and is less than 175 °.
Preferably, the inner annular edge in quiet face of trying to get to the heart of a matter is provided with the step of a circle depression.
Preferably, the outside of quiet dish is provided with supplementary oil nozzle, and quiet dish inside is provided with supplementary oilhole, supplements oil nozzle by supplementing oilhole UNICOM the inner to quiet dish operative end surface.
For an exciting device sealing Moving plate for dust atmosphere, the operative end surface of sealing Moving plate is provided with trapezoidal convex annular tooth, and convex annular tooth and described operative end surface form at least one trapezoidal hollow toroid groove; Described trapezoidal drift angle is greater than 110 ° and is less than 175 °.
For a labyrinth gland for dust atmosphere, comprise the quiet dish of sealing and sealing Moving plate, quiet dish is fixedly installed on bearing support, it is characterized in that: it is trapezoidal tortuous labyrinth seal clearance that the counterface of Moving plate and quiet dish forms radial; Bearing support is provided with grease fitting, and grease fitting is by the inner of oilhole successively UNICOM's bearing and described labyrinth seal clearance.
Preferably, described grease fitting is by oilhole UNICOM bearing, and bearing is by the inner in bypass oilhole UNICOM to described labyrinth seal structure gap.
Preferably, seal quiet dish and sealing Moving plate operative end surface on be equipped with trapezoidal convex annular tooth, convex annular tooth and its place operative end surface form at least one trapezoidal hollow toroid groove; The inner annular edge in quiet face of trying to get to the heart of a matter is provided with the step of a circle depression; The outside of quiet dish is provided with supplementary oil nozzle, and quiet dish inside is provided with supplementary oilhole, supplements oil nozzle by supplementing oilhole UNICOM the inner to quiet dish operative end surface.
Preferably, the axle journal that described Moving plate is set in transmission main shaft is connected with transmission main shaft interference, Moving plate is connected with eccentricity excitation block and hubcap in turn in axle head direction, eccentricity excitation block is connected with transmission main shaft by key, bolt is tightened on transmission main shaft through hubcap, and eccentricity excitation block, Moving plate and bearing inner race is compressed; Transmission main shaft is connected with screen frame side plate by collar bush, bearing support; Bearing, in bearing support, is compressed by quiet dish outside bearing, is provided with back-up ring inside bearing.
Preferably, described trapezoidal drift angle is greater than 110 ° and is less than 175 °, and the axial clearance of described labyrinth seal clearance is 0.2mm-0.4mm, and radial clearance is 1.4mm-1.5mm.
Preferably, the operative end surface top layer of Moving plate and quiet dish is zinc-plated.
After adopting technique scheme, the utility model compared with prior art has following beneficial effect: the labyrinth seal clearance replacing right-angle line in the past with the labyrinth seal clearance at trapezoidal angle, change the angle of repose of dust granules, in addition outwards do centrifugal motion under its centrifugal action, two kinds of action effects combine and make it be difficult to pile up in seal clearance, be detained; Ensure that lubricating grease is constantly full of labyrinth seal clearance and dishes out under centrifugal action, effective prevention dust granules enters between bearing enclose, and the dust granules entered is taken out of, without the need to lip-shaped sealed ring and dust ring, the seal failure that the utility model can effectively avoid dust granules to cause, extend the working life of bearing, reduce equipment failure rate.
Accompanying drawing explanation
Fig. 1 is Moving plate and quietly coil the labyrinth seal structure schematic diagram formed on exciting device in prior art;
Fig. 2 is that the exciting device for dust atmosphere that the utility model provides seals quiet dish sectional view;
Fig. 3 is the sealing of the exciting device for the dust atmosphere Moving plate sectional view that the utility model provides;
Fig. 4 is the labyrinth gland structure sectional view for dust atmosphere that the utility model provides;
Fig. 5 is the B point enlarged view in Fig. 4;
Fig. 6 is the A direction view in Fig. 5.
In figure: 101. prior art Moving plates; 102. prior art main shafts; The quiet dish of 103. prior art; 104. prior art labyrinth seal clearances; 105. lip-shaped sealed ring; 201. convex annular tooth; 202. hollow toroid grooves; 203. step; 1. collar bush; 2. screen frame side plate; 3. plastics back-up ring; 4. grease fitting; 5. oilhole; 6. bearing support; 7. supplement oil nozzle; 8.O RunddichtringO; 9. quiet dish; 10. supplement oilhole; 11. Moving plates; 12. hubcaps; 13. transmission main shafts; 14. keys; 15. bearings; 16. eccentricity excitation blocks; The labyrinth seal clearance at 17. trapezoidal angles; 18. bypass oilholes; 19. Moving plate necks; 20. quiet dish internal ring walls
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, to help understanding content of the present utility model.
Exciting device for dust atmosphere seals a quiet dish, and as shown in Figure 2: the operative end surface sealing quiet dish is provided with trapezoidal convex annular tooth 201, convex annular tooth 201 forms at least one trapezoidal hollow toroid groove 202 with described operative end surface; The inner annular edge in quiet face of trying to get to the heart of a matter is provided with the step 203 of a circle depression, and the outside of quiet dish is provided with supplementary oil nozzle 7, and quiet dish inside is provided with supplementary oilhole 10, supplements oil nozzle 7 by supplementing the inner ring end of oilhole 10 UNICOM to quiet dish operative end surface; More than 1, bulge loop shape number of teeth order on quiet dish, the drift angle of tooth 201 is greater than 110 ° and is less than 175 °, between being preferably 120 ° to 140 °; And the base angle of hollow toroid groove 202 is greater than 110 ° and is less than 175 °, between being preferably 120 ° to 140 °.
For an exciting device sealing Moving plate for dust atmosphere, as shown in Figure 3: the operative end surface of sealing Moving plate is provided with trapezoidal convex annular tooth 201, convex annular tooth 201 forms at least one trapezoidal hollow toroid groove 202 with described operative end surface; More than 1, the bulge loop shape number of teeth order of Moving plate, the drift angle of tooth 201 is greater than 110 ° and is less than 175 °, between being preferably 120 ° to 140 °; And the base angle of hollow toroid groove 202 is greater than 110 ° and is less than 175 °, between being preferably 120 ° to 140 °.
The quiet dish of above-mentioned sealing is applied to a kind of labyrinth gland for dust atmosphere with sealing Moving plate, as shown in Figure 4, and composition graphs 5: comprise the quiet dish 9 of sealing and sealing Moving plate 11, quiet dish 9 is arranged on bearing support 6, transmission main shaft 13 is connected with bearing support 6 and screen frame side plate 2 by collar bush 1, bearing 15 is arranged in bearing support 6, and quiet dish 9 is installed on bearing support 6 by bolt, is positioned at outside bearing 15 and is pressed on bearing support 6 by bearing 15; O RunddichtringO 8 is provided with between quiet dish 9 and bearing support 6; Bearing support 6 is provided with grease fitting 4 and oilhole 5, and grease fitting 4, by oilhole 5 UNICOM bearing 15, lubricates bearing 15 grease up; The plastics back-up ring 3 preventing lubricating grease side leakage is provided with inside bearing 15.
As shown in Figure 4 and composition graphs 6: the axle journal that Moving plate 11 is set in transmission main shaft 13 is connected gapless with axle journal interference, Moving plate 11 is connected with eccentricity excitation block 16 and hubcap 12 in turn along transmission main shaft 13 direction, eccentricity excitation block 16 is connected with transmission main shaft 1 by key 14, bolt is tightened on transmission main shaft 13 through hubcap 12, then eccentricity excitation block 16 and Moving plate 11 and bearing 15 inner ring is compressed.
According to Fig. 5 and shown in composition graphs 2, Fig. 3: the operative end surface sealing quiet dish and sealing Moving plate is equipped with trapezoidal convex annular tooth 201, and convex annular tooth 202 forms at least one trapezoidal hollow toroid groove 202 with its place operative end surface; The inner annular edge in quiet face of trying to get to the heart of a matter is provided with the step 203 of a circle depression; The outside of quiet dish is provided with supplementary oil nozzle 7, and quiet dish inside is provided with supplementary oilhole 10, supplements oil nozzle 7 by supplementing oilhole 10 UNICOM the inner to quiet dish operative end surface; Concave ring groove 202 in the corresponding Moving plate operative end surface of annular tooth 201 in quiet dish operative end surface, circular groove 202 difference and annular tooth 201, tooth, groove are staggered to be coordinated, and the counterface of quiet dish and Moving plate forms the tortuous labyrinth seal clearance 17 that radial direction is trapezoidal angle; The trapezoidal angle β of trapezoidal seal clearance 17 is greater than 110 ° and is less than 175 °, between being preferably 120 ° to 140 °, is preferably isosceles trapezoid, and seal clearance can be made so even, eliminates pressure difference to the impact of sealing; The axial clearance of seal clearance is 0.2mm-0.4mm, and radial clearance is 1.4mm-1.5mm, can stop the dust of particle diameter >0.2mm.For the granule dust of particle diameter <0.2, be then when Moving plate rotates, form a=r ω
2centrifugal field (wherein a is centrifugal field acceleration, and r is Moving plate radius, and ω is angular velocity of rotation), the dust granules entering labyrinth seal clearance then can produce centrifugal force f=mr ω
2(m is dust granules quality), under the effect of centrifugal force f, the resistance that dust enters seal clearance can increase greatly.The utility model is by changing over the labyrinth gap at trapezoidal angle by the right-angle line labyrinth gap of sealing configuration in prior art, change the angle of repose of dust, the dust granules entered can be made to be difficult to pile up, the direction of centrifugal force f becomes π/3 ~ π/4.5 jiao with trapezoidal dihedral simultaneously, increase the shear action of centrifugal force to packed particle, make it pile up and be difficult to be formed, thus make the particle in seal clearance outwards do centrifugal motion under the effect of centrifugal force f, enhance the sealability of labyrinth seal, ensure the sealingly secure of bearing; The angle of trapezoidal angle β can do accommodation according to the environment work different at dust content, ensures sealability.
Because some granule dust are still difficult to automatic removing, especially when start-stop car, centrifugal field does not exist or very little, and dust static pressure still exists, and threatens so still make a part of granule dust enter seal clearance to sealing configuration and bearing;
Inventor of the present utility model accidentally expects, dynamic and static dish form labyrinth seal clearance 17 from inner repack with grease, can in Moving plate rotary course, the viscosity of lubricating grease be utilized to be attached in grease by dust, along with labyrinth seal clearance of dishing out under the centrifugal action of Moving plate.
Shown in composition graphs 5: therefore the utility model is provided with bypass oilhole 18 between bearing and quiet dish, enables the lubricating grease of bearing enter labyrinth seal clearance 17 inner, is then full of by seal clearance; Bypass oilhole 18 in the present embodiment is formed like this: Moving plate 11 is the sealed circular ring dish of band neck 19, the internal diameter of quiet dish 9 is greater than Moving plate recess diameter, then leave gap between quiet dish internal ring wall 20 and Moving plate neck 19 outer wall, the step 203 of a circle depression of quiet face inner annular edge of trying to get to the heart of a matter, forms annular pass between the step 203 of depression and bearing simultaneously; Gap direct access labyrinth seal clearance between the quiet dish internal ring wall of loop wire passage UNICOM and Moving plate neck outer wall is inner, forms bypass oilhole 18.The utility model also directly can arrange at step 18 position of quiet dish depression the through hole running through quiet dish makes its UNICOM inner to labyrinth seal clearance 17, forms bypass oilhole; Also or can be other be applicable to set-up modes.
Such grease fitting 4 can be full of between bearing enclose with labyrinth seal clearance 17, prevent dust from entering, and along with the filling of bearing maintenance fresh oil fat, the lubricating grease lost efficacy will overflow along trapezoidal labyrinth seal narrow gap, and bring the dust granules entering into labyrinth seal into, these dust granules of effective prevention enter between bearing enclose, extend bearing working life; And what the lubricating grease major part of filling in seal clearance even all utilized is disabled grease in bearing, has both saved the cost of grease up, provides one to again the lubricating grease of bearing failure and get rid of passage; Through actual verification, the maintenance interval of bearing was extended to more than 12 ~ 15 weeks by 2 ~ 3 weeks by the utility model.
Quiet dish is provided with supplementary oil nozzle 7 and supplementary oilhole 10, supplement oil nozzle 7 inner to labyrinth seal clearance 17 by supplementing oilhole 10 UNICOM, lubricating grease can be supplemented fast in time when grease fitting is discontented with gap-fill, ensure being full of of seal clearance, increase work efficiency.
Oil-filled from labyrinth seal clearance the inner, can directly the dust entered in gap be blocked in outside bearing, ensure sealing reliability further.
The operative end surface of Moving plate and quiet dish is zinc-plated, to increase the smoothness of labyrinth seal clearance, is beneficial to lubricating grease and dishes out.
Sealing effect between the utility model Moving plate and quiet dish is good, and interference is connected gapless between Moving plate with axle journal, without the need to arranging lip-type packing or dust ring between quiet dish and main shaft, simplify sealing configuration, drastically reduce the area equipment failure rate, substantially prolongs bearing working life simultaneously.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (9)
1. the exciting device for dust atmosphere seals a quiet dish, it is characterized in that: the operative end surface sealing quiet dish is provided with trapezoidal convex annular tooth, and convex annular tooth and described operative end surface form at least one trapezoidal hollow toroid groove; Described trapezoidal drift angle is greater than 110 ° and is less than 175 °.
2. the exciting device for dust atmosphere according to claim 1 seals quiet dish, it is characterized in that: the inner annular edge in quiet face of trying to get to the heart of a matter is provided with the step of a circle depression.
3. the exciting device for dust atmosphere according to claim 2 seals quiet dish, it is characterized in that: the outside of quiet dish is provided with supplementary oil nozzle, and quiet dish inside is provided with supplementary oilhole, supplements oil nozzle by supplementing oilhole UNICOM the inner to quiet dish operative end surface.
4., for an exciting device sealing Moving plate for dust atmosphere, it is characterized in that: the operative end surface of sealing Moving plate is provided with trapezoidal convex annular tooth, and convex annular tooth and described operative end surface form at least one trapezoidal hollow toroid groove; Described trapezoidal drift angle is greater than 110 ° and is less than 175 °.
5. the labyrinth gland for dust atmosphere, comprise the quiet dish of sealing and sealing Moving plate, quiet dish is fixedly installed on bearing support, it is characterized in that: seal quiet dish and sealing Moving plate operative end surface on be equipped with trapezoidal convex annular tooth, convex annular tooth and its place operative end surface form at least one trapezoidal hollow toroid groove; The counterface of Moving plate and quiet dish forms the labyrinth seal clearance that radial direction is trapezoidal angle; The inner annular edge in quiet face of trying to get to the heart of a matter is provided with the step of a circle depression; The outside of quiet dish is provided with supplementary oil nozzle, and quiet dish inside is provided with supplementary oilhole, supplements oil nozzle by supplementing oilhole UNICOM the inner to quiet dish operative end surface; Bearing support is provided with grease fitting, and grease fitting is by the inner of oilhole successively UNICOM's bearing and described labyrinth seal clearance.
6. the labyrinth gland for dust atmosphere according to claim 5, is characterized in that: described grease fitting is by oilhole UNICOM bearing, and bearing passes through bypass oilhole UNICOM the inner to described labyrinth seal clearance.
7. the labyrinth gland for dust atmosphere according to any one of claim 5-6, it is characterized in that: the axle journal that described Moving plate is set in transmission main shaft is connected with transmission main shaft interference, Moving plate is connected with eccentricity excitation block and hubcap in turn in axle head direction, eccentricity excitation block is connected with transmission main shaft by key, bolt is tightened on transmission main shaft through hubcap, and eccentricity excitation block, Moving plate and bearing inner race is compressed; Transmission main shaft is connected with screen frame side plate by collar bush, bearing support; Bearing, in bearing support, is compressed by quiet dish outside bearing, is provided with back-up ring inside bearing.
8. the labyrinth gland for dust atmosphere according to any one of claim 5-6, it is characterized in that: described trapezoidal drift angle is greater than 110 ° and is less than 175 °, the axial clearance of described labyrinth seal clearance is 0.2mm-0.4mm, and radial clearance is 1.4mm-1.5mm.
9. the labyrinth gland for dust atmosphere according to any one of claim 5-6, is characterized in that: the operative end surface top layer of Moving plate and quiet dish is zinc-plated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520074563.5U CN204493729U (en) | 2015-02-02 | 2015-02-02 | Exciting device for dust atmosphere seals quiet dish, Moving plate and labyrinth gland |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520074563.5U CN204493729U (en) | 2015-02-02 | 2015-02-02 | Exciting device for dust atmosphere seals quiet dish, Moving plate and labyrinth gland |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204493729U true CN204493729U (en) | 2015-07-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520074563.5U Withdrawn - After Issue CN204493729U (en) | 2015-02-02 | 2015-02-02 | Exciting device for dust atmosphere seals quiet dish, Moving plate and labyrinth gland |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204493729U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633129A (en) * | 2015-02-02 | 2015-05-20 | 江苏鹏飞集团股份有限公司 | Sealing static disc and sealing moving disc of vibration excitation device and labyrinth sealing device for dust environment |
| WO2020227778A1 (en) * | 2019-05-16 | 2020-11-19 | Skf Australia Pty Ltd | Split plummer block bearing housing |
| CN114673729A (en) * | 2022-01-30 | 2022-06-28 | 山东省章丘鼓风机股份有限公司 | Combined labyrinth seal structure for bearing seat |
-
2015
- 2015-02-02 CN CN201520074563.5U patent/CN204493729U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633129A (en) * | 2015-02-02 | 2015-05-20 | 江苏鹏飞集团股份有限公司 | Sealing static disc and sealing moving disc of vibration excitation device and labyrinth sealing device for dust environment |
| CN104633129B (en) * | 2015-02-02 | 2016-08-17 | 江苏鹏飞集团股份有限公司 | Exciting device for dust atmosphere seals quiet dish, Moving plate and labyrinth gland |
| WO2020227778A1 (en) * | 2019-05-16 | 2020-11-19 | Skf Australia Pty Ltd | Split plummer block bearing housing |
| US12012995B2 (en) | 2019-05-16 | 2024-06-18 | Skf Australia Pty Ltd | Split plummer block bearing housing |
| CN114673729A (en) * | 2022-01-30 | 2022-06-28 | 山东省章丘鼓风机股份有限公司 | Combined labyrinth seal structure for bearing seat |
| CN114673729B (en) * | 2022-01-30 | 2023-11-24 | 山东省章丘鼓风机股份有限公司 | Combined labyrinth sealing structure for bearing pedestal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150722 Effective date of abandoning: 20160817 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |