CN215059334U - Bevel gear speed reducer sealing device for coal conveying system impeller coal feeder - Google Patents
Bevel gear speed reducer sealing device for coal conveying system impeller coal feeder Download PDFInfo
- Publication number
- CN215059334U CN215059334U CN202121481285.7U CN202121481285U CN215059334U CN 215059334 U CN215059334 U CN 215059334U CN 202121481285 U CN202121481285 U CN 202121481285U CN 215059334 U CN215059334 U CN 215059334U
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- Prior art keywords
- bevel gear
- reducer
- output shaft
- speed reducer
- gear reducer
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 172
- 238000007789 sealing Methods 0.000 title claims abstract description 56
- 239000003245 coal Substances 0.000 title claims abstract description 42
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000002817 coal dust Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- LNSPFAOULBTYBI-UHFFFAOYSA-N [O].C#C Chemical group [O].C#C LNSPFAOULBTYBI-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- PCTMTFRHKVHKIS-BMFZQQSSSA-N (1s,3r,4e,6e,8e,10e,12e,14e,16e,18s,19r,20r,21s,25r,27r,30r,31r,33s,35r,37s,38r)-3-[(2r,3s,4s,5s,6r)-4-amino-3,5-dihydroxy-6-methyloxan-2-yl]oxy-19,25,27,30,31,33,35,37-octahydroxy-18,20,21-trimethyl-23-oxo-22,39-dioxabicyclo[33.3.1]nonatriaconta-4,6,8,10 Chemical compound C1C=C2C[C@@H](OS(O)(=O)=O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2.O[C@H]1[C@@H](N)[C@H](O)[C@@H](C)O[C@H]1O[C@H]1/C=C/C=C/C=C/C=C/C=C/C=C/C=C/[C@H](C)[C@@H](O)[C@@H](C)[C@H](C)OC(=O)C[C@H](O)C[C@H](O)CC[C@@H](O)[C@H](O)C[C@H](O)C[C@](O)(C[C@H](O)[C@H]2C(O)=O)O[C@H]2C1 PCTMTFRHKVHKIS-BMFZQQSSSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- General Details Of Gearings (AREA)
Abstract
The utility model provides a bevel gear speed reducer sealing device for coal conveying system impeller feeder, wherein, the bevel gear speed reducer is installed in the frame of impeller feeder, its output shaft with the impeller of impeller feeder links to each other. The bevel gear reducer sealing device is arranged on an output shaft of the bevel gear reducer; the bevel gear reducer sealing device comprises a sealing disc and a reducer pipe, wherein the sealing disc surrounds an output shaft of the bevel gear reducer and is installed in interference fit with the output shaft of the bevel gear reducer; the reducer pipe is clamped on an output shaft of the bevel gear speed reducer, and is located above the sealing disc and fixedly connected with the sealing disc. The utility model has the advantages of simple structure, can effectively avoid the buggy to fall into on the skeleton oil blanket of the output of bevel gear speed reducer and cause the oil blanket to damage, and then inside getting into the bevel gear speed reducer, damage the speed reducer gear, reduced the maintenance frequency of bevel gear speed reducer.
Description
Technical Field
The utility model relates to a coal mine equipment technical field, concretely relates to bevel gear speed reducer sealing device for coal conveying system impeller feeder.
Background
The impeller coal feeder is the main coal unloading and distributing equipment of the coal conveying system of the thermal power plant, and utilizes an impeller rotating around a vertical shaft to extend into a gap of a long gap coal chute, and utilizes blades (also called plough arms) radially arranged to pull and leak coal on a bottom chute platform of a coal chute into a coal dropping pipe of an impeller box body, and the coal is delivered to a belt through a coal dropping hopper. The rotation of the impeller is usually driven by an impeller bevel gear reducer arranged at the bottom of the impeller box body.
Because the output shaft of the bevel gear speed reducer needs to pass through the impeller box body to be connected with the impeller, a certain gap is formed between the impeller box body and the output shaft of the bevel gear speed reducer, pulverized coal in the impeller box body can fall onto an end cover at the output shaft end of the bevel gear speed reducer through the gap, a skeleton oil seal of the output shaft exposed outside is ground, the skeleton oil seal is easy to damage after long-time operation, and fine pulverized coal can fall into the bevel gear speed reducer along the gap of the damaged skeleton oil seal. If the framework oil seal is replaced, the impeller must be detached and the impeller box body must be lifted away, the time for use is more than 10 hours, time and labor are wasted, and the normal operation of equipment is influenced.
SUMMERY OF THE UTILITY MODEL
Not enough and defect to among the prior art, the utility model provides a bevel gear speed reducer sealing device for impeller feeder for solve the buggy and fall to the problem of damaging the skeleton oil blanket on the bevel gear speed reducer output end cover from the gap of impeller box and bevel gear speed reducer output shaft.
To achieve the above and other related objects, the present invention provides a bevel gear reducer sealing device for an impeller coal feeder, wherein a bevel gear reducer is installed in a frame of the impeller coal feeder, and an output shaft of the bevel gear reducer is connected to an impeller of the impeller coal feeder. The bevel gear reducer sealing device is arranged on an output shaft of the bevel gear reducer; the bevel gear reducer sealing device comprises a sealing disc and a reducer pipe, wherein the sealing disc surrounds an output shaft of the bevel gear reducer and is installed in interference fit with the output shaft of the bevel gear reducer; the reducer pipe is clamped on an output shaft of the bevel gear speed reducer, and is located above the sealing disc and fixedly connected with the sealing disc.
In an embodiment of the utility model, the sealing disc is the annular disc, the internal diameter of sealing disc with the output shaft interference fit of bevel gear speed reducer, the external diameter of sealing disc is 2 ~ 3 times of the output shaft diameter of bevel gear speed reducer.
In an embodiment of the present invention, the outer diameter of the sealing disc is 2 times the diameter of the output shaft of the bevel gear reducer.
In an embodiment of the utility model, the tip internal diameter of reducing pipe with the output shaft phase-match of bevel gear speed reducer, the main aspects external diameter of reducing pipe with the external diameter phase-match of sealing disc.
In an embodiment of the present invention, the large end of the reducer pipe is welded to the sealing disc.
In an embodiment of the present invention, the sealing disc is installed on the upper portion of the output end cap of the bevel gear speed reducer, and a gap is provided between the output end cap of the bevel gear speed reducer.
In an embodiment of the present invention, the input end of the bevel gear reducer is connected to the driving device in the horizontal direction, and the output shaft thereof is located in the vertical direction of the input end and connected to the impeller.
In an embodiment of the present invention, the driving device includes a driving motor and a rotary speed reducer connected to the driving motor, the rotary speed reducer is connected to the input end of the bevel gear speed reducer through a coupling.
As described above, the utility model discloses install sealing disc and reducing pipe on the output shaft of bevel gear speed reducer, the buggy that leaks down from the gap between impeller box and the output shaft of bevel gear speed reducer falls on the reducing pipe, and the inclined plane along reducing pipe slides down, and when the bevel gear speed reducer starts, reducing pipe and sealing disc are along with the output shaft synchronous rotation motion, and the buggy that slides down is thrown away from reducing pipe along being accelerated of reducing pipe landing under the effect of centrifugal force, can not slide down on the output end cover of bevel gear speed reducer, causes the damage to the skeleton oil blanket; and because the sealing disc is in interference fit with the output shaft of the bevel gear speed reducer, the effect of plugging the reducer pipe is achieved, and the coal dust entering a gap between the reducer pipe and the output shaft of the bevel gear speed reducer is prevented from entering the framework oil seal.
Drawings
The features and advantages of the invention will be more clearly understood by reference to the accompanying drawings, which are schematic and should not be understood as imposing any limitation on the invention, in which:
FIG. 1 is a schematic diagram of a transmission device of a coal vane feeder;
fig. 2 is a schematic structural view of the sealing device of the bevel gear speed reducer of the present invention;
fig. 3 is a schematic structural view of the reducer pipe of the present invention;
fig. 4 is a schematic view of the blanking plate of the reducer pipe of the present invention during manufacturing.
Reference numerals
100 bevel gear speed reducer
101 output shaft
102 sealing disc
103 reducing pipe
200 motor
300 rotary speed reducer
400 first coupling
500 impeller box
600 impeller
700 coal dropping pipe
800 second coupling
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. It is also to be understood that the terminology used in the examples is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the present invention.
The structure, proportion, size and the like shown in the drawings are only used for matching with the content disclosed in the specification, so that the person skilled in the art can understand and read the description, and the description is not used for limiting the limit condition of the implementation of the invention, so the method has no technical essence, and any structural modification, proportion relation change or size adjustment still falls within the range covered by the technical content disclosed by the invention without affecting the effect and the achievable purpose of the invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
The utility model provides a bevel gear speed reducer sealing device for impeller feeder can avoid falling the buggy that falls from the gap between the output shaft of impeller box and bevel gear speed reducer and fall to the output end and cover and damage the skeleton oil blanket.
Referring to fig. 1, in the present invention, the bevel gear reducer 100 is installed on a rack (not shown in the figure) of an impeller coal feeder, an input end of the bevel gear reducer 100 is connected to a driving device in a horizontal direction, an output end of the bevel gear reducer 100 is perpendicular to an input end of the bevel gear reducer 100, and the output shaft 101 passes through a wall body of the impeller box 500 to be connected to the impeller 600, in order to avoid affecting rotation of the output shaft 101, a gap is provided at a position where the wall body of the impeller box 500 is connected to the output shaft 101, and a coal dropping pipe 700 is provided at a bottom of the impeller box 500. The driving device may be, for example, a motor 200 and a rotary speed reducer 300 connected to the motor 200, and the rotary speed reducer 300 is a general-purpose speed reducer. The motor 200 and the rotary speed reducer 300 are installed on a frame of the impeller coal feeder, the input end of the rotary speed reducer 300 is connected with the output end of the motor 200 through a second coupler 800, and the output end of the rotary speed reducer 300 is connected with the input end of the bevel gear speed reducer 100 through a first coupler 400. The starting motor 200 drives the rotary speed reducer 300 to rotate, and further drives the bevel gear speed reducer 100 to rotate, the output shaft 101 of the bevel gear speed reducer drives the impeller 600 to rotate, the impeller 600 rotates to push coal in the coal chute into the coal dropping pipe 700 of the impeller box body 500, and the coal enters the coal conveying belt through the coal dropping pipe 700.
Referring to fig. 1 and 2, the sealing device of the bevel gear reducer of the present invention is mounted on the output shaft 101 of the bevel gear reducer, and is used for blocking pulverized coal falling from a gap between the output shaft 101 and the impeller casing 500 from entering the end cover of the bevel gear reducer 100. The bevel gear reducer sealing device comprises a sealing disc 102 and a reducer pipe 103, the sealing disc 102 surrounds an output shaft 101 of the bevel gear reducer 100 and is in interference fit with the output shaft 101, the reducer pipe 103 is clamped on the output shaft 101 of the bevel gear reducer 100, and the reducer pipe 103 is located above the sealing disc 102 and is fixedly connected with the sealing disc 102. The coal powder falling from the gap between the impeller box body 500 and the output shaft 101 can preferentially fall on the reducer pipe 103, slide down along the surface of the reducer pipe 103, and partially fall on the coal powder on the surface of the reducer pipe 102, when the reducer pipe 103 rotates along with the output shaft 101, the coal powder can be thrown away from the center at an accelerated speed under the action of centrifugal force, and cannot fall on the output end cover of the bevel gear speed reducer 100, so that the damage of the coal powder to the framework seal is avoided, the service life is prolonged, and the maintenance frequency of the bevel gear speed reducer is reduced.
Referring to fig. 2, as an example, the sealing disk 102 is installed on top of the output end cap of the bevel gear reducer 100 to better protect the output end cap. The sealing disc 102 is an annular disc, the inner diameter of the annular disc is in interference fit with the output shaft 101 of the bevel gear speed reducer, and the outer diameter of the annular disc is 2-5 times the diameter of the output shaft 101 of the bevel gear speed reducer. The annular disc is in interference fit with the output shaft 101 of the bevel gear speed reducer, so that no gap is formed at the joint of the annular disc and the output shaft, and the coal powder is prevented from entering the output end cover of the bevel gear speed reducer 100 at the connection position. Preferably, the inner diameter of the annular disc is 0.5mm (millimeter) smaller than the diameter of the output shaft 101 of the bevel gear reducer, the outer diameter is 2 times of the diameter of the output shaft 101 of the bevel gear reducer, and the thickness is 10 mm. When the annular disk is installed, the inner diameter of the annular disk is heated through oxygen acetylene, and then the annular disk is hot-installed on the output shaft 101 of the bevel gear reducer.
Referring to fig. 2, as an example, the reducer pipe 103 is a circular reducer pipe, which is sleeved on the output shaft 101 of the bevel gear reducer, the inner diameter of the small end of the reducer pipe 103 matches the diameter of the output shaft 101 of the bevel gear reducer, the inner diameter of the large end of the reducer pipe 103 matches the outer diameter of the sealing disc 102, and the height of the reducer pipe 103 can be selected according to the installation environment. For convenience of installation, the inner diameter of the small end of the reducer pipe 103 may be slightly larger than the diameter of the output shaft 101 of the bevel gear reducer, for example, the diameter of the small end of the reducer pipe 103 is 0.5mm larger than the diameter of the output shaft 101 of the bevel gear reducer, and after the reducer pipe 103 is sleeved on the output shaft 101 of the bevel gear reducer, the large end of the reducer pipe 103 is welded to the sealing disc 102. The sealing device composed of the sealing disc 102 and the reducer pipe 103 can rotate along with the output shaft 101 of the bevel gear speed reducer, coal dust falling from a gap between the impeller box body 500 and the output shaft 101 of the bevel gear speed reducer can fall onto the reducer pipe 102, and along with the rotation of the output shaft 101 of the bevel gear speed reducer, the coal dust is thrown away from a reducing center and can not fall onto an end cover at the bottom of the sealing device, so that the damage of a framework oil seal is avoided. Because the inner diameter of the small end of the reducer pipe 103 is larger than the diameter of the output shaft 101, coal dust may enter a gap between the reducer pipe 103 and the output shaft 101, but the bottom of the reducer pipe 103 is blocked by the sealing disc 102, and the sealing disc 102 is in interference fit with the output shaft 101, the coal dust entering the inside of the reducer pipe 103 is blocked between the reducer pipe 103 and the sealing disc 102, and will not flow into the reducer pipe after the volume of the reducer pipe 103 is filled, and the coal dust inside the reducer pipe 103 cannot rust the output shaft 101 of the bevel gear reducer because the coal dust is oily.
Referring to fig. 2 to 4, the reducer 103 may be manufactured by purchasing a reducer according to installation conditions directly according to a field environment, or by itself. During manufacturing, the diameter of the small end of the reducer pipe 103 can be determined according to the diameter of the output shaft 101 of the bevel gear reducer and is recorded as D, the diameter D of the large end of the reducer pipe 103 is determined according to the outer diameter of the sealing disc 102, and the height of the reducer pipe 103 is recorded as h; extending the two side edges of the reducer pipe 103 upwards to meet at a point O, recording the bevel edge distance from the point O to the large end of the reducer pipe 103 as R, and recording the bevel edge distance from the point O to the small end of the reducer pipe 103 as R; the circumference of the large end of the reducer pipe 103 is pi D, the central angle of the sector surrounding the reducer pipe 103 is alpha, and alpha/360 is pi D/2 pi R, and alpha is 360 x (D/2R); according to the calculation result, selecting a proper steel plate, drawing a large circle by taking R as a radius, drawing a small circle by taking R as the radius on the same circle center O, then taking any point A on the circle R as a starting point, measuring an angle alpha, crossing the large circle to a point B, connecting the circle center O and the point A to cross the R circle to a point C, connecting the circle center O and the point B to cross the R circle to a point D, and then ABCD is the blanking size for manufacturing the reducer pipe 103. After blanking, the blanking plate is heated by using oxygen acetylene and hammered by a hand hammer, and the blanking plate is bent to form the reducer pipe 103.
To sum up, the utility model discloses install sealed disc and reducing pipe on the output shaft of bevel gear speed reducer, the buggy that leaks down from the gap between the output shaft of impeller box and bevel gear speed reducer falls on the reducing pipe, inclined plane landing downwards along the reducing pipe, when the output shaft of bevel gear speed reducer rotates, synchronous rotary motion is along with the output shaft to reducing pipe and sealed disc, under the effect of centrifugal force, the buggy along reducing pipe landing is thrown away from the reducing pipe with higher speed, can not cause the damage to the skeleton oil blanket on the skeleton oil blanket of landing sealing device bottom, the life of skeleton oil blanket has been prolonged, reduce the change frequency. Therefore, the utility model discloses thereby effectively overcome some practical problems among the prior art and had very high use value and use meaning.
The above-described embodiments are merely illustrative of the principles of the present invention and its efficacy, rather than limiting the same, and various modifications and variations can be made by those skilled in the art without departing from the spirit and scope of the invention, such modifications and variations all falling within the scope of the appended claims.
Claims (8)
1. A bevel gear reducer sealing device for an impeller coal feeder of a coal conveying system, wherein a bevel gear reducer is arranged on a frame of the impeller coal feeder, and an output shaft of the bevel gear reducer is connected with an impeller of the impeller coal feeder,
the bevel gear reducer sealing device is arranged on an output shaft of the bevel gear reducer;
bevel gear speed reducer sealing device includes:
the sealing disc surrounds the output shaft of the bevel gear speed reducer and is in interference fit with the output shaft of the bevel gear speed reducer;
and the reducer pipe is clamped on an output shaft of the bevel gear speed reducer and is positioned above the sealing disc and fixedly connected with the sealing disc.
2. The seal device for the bevel gear reducer of claim 1, wherein the seal disc is an annular disc, the inner diameter of the seal disc is in interference fit with the output shaft of the bevel gear reducer, and the outer diameter of the seal disc is 2-3 times the diameter of the output shaft of the bevel gear reducer.
3. The seal device for a bevel gear reducer according to claim 2, wherein the outer diameter of the seal disk is 2 times the diameter of the output shaft of the bevel gear reducer.
4. The seal device for the bevel gear reducer according to claim 1, wherein the inner diameter of the small end of the reducer pipe is matched with the output shaft of the bevel gear reducer, and the outer diameter of the large end of the reducer pipe is matched with the outer diameter of the seal disk.
5. The seal device for a bevel gear reducer of claim 4, wherein the large end of the reducer pipe is welded to the seal disk.
6. The seal device for the bevel gear reducer according to any one of claims 1 to 5, wherein the seal disc is mounted on an upper portion of an output end cap of the bevel gear reducer with a gap provided therebetween.
7. The sealing device of a bevel gear reducer according to claim 1, wherein the input end of the bevel gear reducer is connected to the driving device in a horizontal direction, and the output shaft of the bevel gear reducer is located in a vertical direction of the input end and connected to the impeller.
8. The seal device of claim 7, wherein the driving device comprises a rotating electrical machine and a rotary reducer connected to the rotating electrical machine, and the rotary reducer is connected to an input end of the bevel reducer through a coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121481285.7U CN215059334U (en) | 2021-06-30 | 2021-06-30 | Bevel gear speed reducer sealing device for coal conveying system impeller coal feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121481285.7U CN215059334U (en) | 2021-06-30 | 2021-06-30 | Bevel gear speed reducer sealing device for coal conveying system impeller coal feeder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215059334U true CN215059334U (en) | 2021-12-07 |
Family
ID=79226594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121481285.7U Withdrawn - After Issue CN215059334U (en) | 2021-06-30 | 2021-06-30 | Bevel gear speed reducer sealing device for coal conveying system impeller coal feeder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215059334U (en) |
-
2021
- 2021-06-30 CN CN202121481285.7U patent/CN215059334U/en not_active Withdrawn - After Issue
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20211207 Effective date of abandoning: 20231227 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20211207 Effective date of abandoning: 20231227 |