CN214515170U - Coal mill spring scraper device and coal mill - Google Patents
Coal mill spring scraper device and coal mill Download PDFInfo
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- CN214515170U CN214515170U CN202120441565.9U CN202120441565U CN214515170U CN 214515170 U CN214515170 U CN 214515170U CN 202120441565 U CN202120441565 U CN 202120441565U CN 214515170 U CN214515170 U CN 214515170U
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- scraper
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Abstract
The utility model provides a coal mill spring scraper device and a coal mill, belonging to the technical field of coal mills, comprising a scraper seat, a scraper shaft, a scraper and a torsional spring, wherein the scraper seat is used for being fixed at the bottom of a grinding disc of the coal mill; the scraping plate shaft is fixedly arranged on the scraping plate seat; the scraper is rotationally arranged on the scraper shaft; the torsional spring is installed on the scraper blade axle, and links to each other with the scraper blade for provide torsion for the scraper blade. The utility model provides a coal pulverizer spring scraper means provides torsion for the scraper blade through the torsional spring, and when cleaning and striking off the pebble coal, the scraper blade can make the scraper blade can keep flagging gesture when rotatory striking off under the effect of torsional spring torsion, and the scraper blade can provide bigger thrust, has improved the effect of cleaning and striking off the pebble coal greatly; the elasticity of the torsion spring can play a role in buffering the action of the scraper, so that the impact force between the scraper and larger pebble coal or heavier obstacles can be buffered, the impact wear degree of the scraper is reduced, and the service life of the scraper is prolonged.
Description
Technical Field
The utility model belongs to the technical field of the coal pulverizer, more specifically say, relate to a coal pulverizer spring scraper means and have this spring scraper means's coal pulverizer.
Background
The coal mill scraper blade device is used for the device of the inside stone coal discharge side organism of coal mill, and the degree of wear and the situation of use direct relation of scraper blade are to the safe and stable operation of coal mill equipment, and scraper blade device damages, can cause the piling up of the inside stone coal of coal mill side organism, can damage the coal mill frame and seal, causes the wind powder to leak polluted environment outward, can produce spontaneous combustion during serious, burns out trouble such as wind channel, endangers equipment safety.
Each coal mill is generally symmetrically provided with two scraper devices which are arranged below a grinding disc of the coal mill and rotate along with the grinding disc to scrape and clean pebble coal. The existing scraper is in a free swing state, the gravity droops, the bottom of the scraper is an abrasion-resistant plate, and the scraper is generally formed by cutting and processing a manganese plate.
When the coal mill equipment runs, the scraper device rotates along with a grinding disc of the coal mill, the scraper sags under the action of self gravity, pebble coal is swept and scraped, the pebble coal is pushed to move forwards until the pebble coal falls into a discharge port, when the pebble coal is accumulated, the forward thrust provided by the gravity of the scraper is not enough to push a pebble coal pile, the scraper can be jacked up by the pebble coal pile and can only be lifted backwards, more pebble coal can be left in the sweeping and scraping process, the discharge port cannot be swept, the scraper cannot sag naturally due to long-term use and accumulation, the scraping capacity is greatly reduced, the coal mill equipment needs to be shut down to scrape the deposited pebble coal manually, and the production efficiency of the coal mill is influenced; when meeting great pebble coal or when receiving heavier barrier, the scraper blade takes place the striking with the pebble coal under the effect of gravity, and the scraper blade is followed the impact and is lifted up, in repeated striking friction process, causes the scraper blade excessive wear, influences the scraper blade life-span.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a coal pulverizer spring scraper means can avoid the scraper blade excessive wear, strike off not thorough scheduling problem, can improve the effect of striking off of scraper blade, prolongs the life of scraper blade.
In order to achieve the above object, the embodiment of the present invention adopts the following technical solutions:
in a first aspect, a coal pulverizer spring scraper device is provided, comprising: the scraper seat is used for being fixed at the bottom of a grinding disc of the coal mill; the scraper shaft is fixedly arranged on the scraper seat; the scraper is rotationally arranged on the scraper shaft; the torsional spring install in scrape on the scraper blade axle, and with the scraper blade links to each other, be used for the scraper blade provides torsion.
In a possible implementation manner of the first aspect, a fixing sleeve is arranged on the scraper shaft, the first end of the torsion spring is connected with the fixing sleeve, and the second end of the torsion spring is connected with the scraper.
In a possible implementation manner of the first aspect, the fixing sleeve is provided with a convex eccentric block, and the first end of the torsion spring is lapped on the eccentric block.
In a possible implementation manner of the first aspect, the scraper is provided with a positioning sleeve for limiting the torsion spring, and the second end of the torsion spring is inserted into the positioning sleeve.
In a possible implementation manner of the first aspect, the scraper includes a connecting plate and a scraper body, the connecting plate is provided with two lugs connected with the scraper shaft in a rotating manner, the fixing sleeve is limited to two lugs, one lug is close to the fixing sleeve, the torsion spring is limited to the fixing sleeve and the distance between the lugs of the fixing sleeve, and the scraper body is fixedly connected with the connecting plate through a bolt.
In a possible implementation manner of the first aspect, the plurality of bolts connecting the squeegee body are connected together by an anti-rotation plate.
In a possible implementation manner of the first aspect, a backing plate is further disposed on the connecting plate, and the bolts penetrate through the same backing plate and the connecting plate to be connected with the scraper body.
In a possible implementation manner of the first aspect, a through hole is formed in the ear seat, a wear-resistant sleeve is arranged in the through hole, and the scraper is rotatably connected with the scraper shaft through the wear-resistant sleeve.
In a possible implementation manner of the first aspect, two support plates are arranged on the scraper seat, two ends of the scraper shaft are connected with the support plates, and a wear-resistant gasket is arranged between the scraper and the support plates.
In a second aspect, an embodiment of the present invention provides a coal pulverizer equipped with the spring scraper device.
The utility model provides a coal pulverizer spring scraper means's beneficial effect lies in: compared with the prior art, the utility model discloses coal pulverizer spring scraper blade device is equipped with the torsional spring on scraping plate shaft, provides torsion for the scraper blade through the torsional spring, and when cleaning and striking off the pebble coal, the scraper blade can make the scraper blade can keep flagging gesture when rotatory striking off under the effect of torsional spring torsion, and the scraper blade can provide bigger thrust, has improved the effect of cleaning and striking off the pebble coal greatly; in addition, as the pebble coal not only needs to overcome the thrust force brought by the weight of the scraper blade, but also needs to overcome the torsion force of the torsion spring, the possibility that the pebble coal props against the scraper blade to tilt backwards is reduced, and the pebble coal is pushed forwards under the thrust force of the scraper blade until the pebble coal falls into the discharge port; moreover, the elasticity of the torsion spring can play a role in buffering the action of the scraper, so that the impact force between the scraper and larger pebble coal or a heavier obstacle can be buffered, the impact wear degree of the scraper is reduced, and the service life of the scraper is prolonged.
The utility model provides a coal pulverizer owing to adopted foretell spring scraper means, therefore has foretell effect, no longer gives unnecessary details here.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural view of a coal mill spring scraper device adopted in an embodiment of the invention;
FIG. 2 is a side view schematic illustration of the coal pulverizer spring scraper assembly employed in FIG. 1;
FIG. 3 is a schematic side view of the positioning sleeve of FIG. 1;
fig. 4 is a schematic side view of the positioning sleeve in fig. 1.
In the figure: 1. a torsion spring; 2. a scraper shaft; 3. fixing a sleeve; 31. an eccentric block; 32. positioning a groove; 4. a squeegee base; 41. a base plate; 42. a support plate; 5. a wear-resistant washer; 6. a nut; 7. a squeegee; 71. an ear mount; 72. a squeegee body; 73. a connecting plate; 74. a base plate; 75. a bolt; 76. an anti-rotation plate; 8. a positioning sleeve.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
One embodiment of a coal mill spring scraper 7 arrangement as shown in fig. 1-4 comprises a scraper seat 4, a scraper shaft 2, a scraper 7 and a torsion spring 1, the scraper seat 4 is used for being fixed at the bottom of a grinding disc of a coal mill; the scraper shaft 2 is fixedly arranged on the scraper seat 4; the scraper 7 is rotatably arranged on the scraper shaft 2; the torsion spring 1 is mounted on the scraper shaft 2 and connected with the scraper 7 for providing torsion force for the scraper 7.
Compared with the prior art, the coal mill spring scraper 7 device provided by the utility model is characterized in that the torsion spring 1 is arranged on the scraper shaft 2, the torsion force is provided for the scraper 7 through the torsion spring 1, when the pebble coal is cleaned and scraped, the scraper 7 can keep a drooping posture when the scraper 7 is rotated and scraped under the action of the torsion force of the torsion spring 1, the scraper 7 can provide larger thrust force, and the effect of cleaning and scraping the pebble coal is greatly improved; in addition, as the pebble coal not only needs to overcome the thrust force brought by the weight of the scraper 7, but also needs to overcome the torsion force of the torsion spring 1, the possibility that the pebble coal props against the scraper 7 to tilt backwards is reduced, and the pebble coal is pushed forwards under the thrust force of the scraper 7 until the pebble coal falls into the discharge port; furthermore, the elasticity of the torsion spring 1 can buffer the action of the scraper 7, so that the impact force between the scraper 7 and large pebble coal or a heavy obstacle can be buffered, the impact wear degree of the scraper 7 is reduced, and the service life of the scraper 7 is prolonged.
In this embodiment, scrape board shaft 2 and 4 fixed connection of scraper blade seat, scrape the one end of board shaft 2 and be equipped with spacing end cap, one end is equipped with the external screw thread, scrapes the one end that board shaft 2 stretches out and passes through nut 6 locking. The scraper shaft 2 is used for fixing and providing a fixed support for the installation of the torsion spring 1, so that the torsion spring 1 is driven to store torsion when the scraper 7 rotates.
It should be noted that the installation of the scraper shaft 2 and the torsion spring 1 is a conventional technology, and those skilled in the art can flexibly install the scraper shaft and the torsion spring to achieve the use effect.
As a modified embodiment, as shown in FIG. 1, the scraper shaft 2 is provided with a fixing sleeve 3, a first end of the torsion spring 1 is connected with the fixing sleeve 3, and a second end of the torsion spring 1 is connected with the scraper 7. Fixed cover 3 passes through the spline or flat key with scraping trigger shaft 2 and is connected, and the purpose that sets up fixed cover 3 is the installation of the torsional spring 1 of being convenient for, and fixed cover 3 is little at the cost of wearing and tearing back change, and it is easier to change, also avoids torsional spring 1 direct mount to cause the harm to scraping trigger shaft 2 on scraping trigger shaft 2.
As shown in fig. 1 and 3, the fixing sleeve 3 is provided with a convex eccentric block 31, and the first end of the torsion spring 1 is lapped on the eccentric block 31 to provide support for the torsion of the torsion spring 1.
As another modified embodiment of the positioning sleeve 8, referring to FIG. 4, a positioning groove 32 for positioning the first end of the torsion spring 1 may be provided on the eccentric block 31. Through the positioning groove 32, the torsion spring 1 can be prevented from sliding, so that the torsion spring 1 can be reliably positioned.
As a modified embodiment, as shown in fig. 1, the scraper 7 is provided with a positioning sleeve 8 for limiting the torsion spring 1, and the second end of the torsion spring 1 is inserted into the positioning sleeve 8. The positioning sleeve 8 is arranged to fix the torsion spring 1, so that the torsion spring 1 is convenient to mount and dismount while the fixing effect is achieved. The lug seat 71 arranged on the scraper 7 is combined, and the positioning sleeve 8 is directly welded on the lug seat 71.
As another modified embodiment, as shown in fig. 1, the scraper 7 includes a connecting plate 73 and a scraper body 72, the connecting plate 73 is provided with two lug seats 71 rotatably connected with the scraper shaft 2, the fixing sleeve 3 is limited between the two lug seats 71 and is close to one of the lug seats 71, the torsion spring 1 is limited between the fixing sleeve 3 and the lug seat 71 far away from the fixing sleeve 3, and the scraper body 72 is fixedly connected with the connecting plate 73 through a bolt 75. The torsion spring 1 can be directly limited in the axial direction through the ear seat 71 and the fixed sleeve 3, and the installation is simple and convenient. Meanwhile, according to the record of the embodiment, the scraper shaft 2, the scraper 7, the fixed sleeve 3 and the torsion spring 1 can be detachably assembled, and when one of the parts is damaged, the disassembly and the replacement are simple and convenient, and the maintenance cost can be reduced.
As another modified embodiment, as shown in fig. 1, a plurality of bolts 75 connecting the squeegee bodies are connected together by an anti-rotation plate 76. The anti-rotation plates 76 connect the fixed bolts 75 together, so that the possibility that the bolts 75 are loosened in long-term work can be avoided, and the scraper body can be prevented from falling off, thereby avoiding the shutdown fault in the scraping work and being beneficial to smooth production.
As another modified embodiment, as shown in fig. 1, a backing plate 74 is further provided on the connecting plate 73, and a plurality of bolts 75 pass through the same backing plate 74 and the connecting plate 73 to be connected to the scraper body. The strength and rigidity of the entire scraper 7 can be improved by the backing plate 74, the weight of the cleaned pebble coal can be increased, and the cleaning and scraping efficiency can be improved.
As another modified embodiment, as shown in fig. 1, a wear-resistant sleeve is provided in the through hole of the ear seat 71, and the scraper 7 is rotatably connected to the scraper shaft 2 through the wear-resistant sleeve. Because the section of ear seat 71 is less, is the weak link that the atress was concentrated, easy wearing and tearing lead to ear seat 71 through-hole grow, have cracked risk, and through the wear-resisting cover that sets up on ear seat 71, wear-resisting cover and scrape board axle 2 direct contact friction, can avoid the wearing and tearing of scraper blade 7, improve scraper blade 7's life.
As another modified embodiment, as shown in fig. 1, two support plates 42 are provided on the scraper seat 4, both ends of the scraper shaft 2 are connected with the support plates 42, and a wear-resistant washer 5 is provided between the scraper 7 and the support plates 42. In this embodiment, the scraper seat 4 includes a bottom plate 41 and a supporting plate 42, the bottom plate 41 is detachably connected to the grinding disc through a bolt 75, and the supporting plate 42 is welded to the bottom plate 41, so as to improve the connection strength and prolong the service life. The wear-resistant gasket 5 is arranged, so that the abrasion of the scraper 7 is avoided, and the service life of the scraper 7, the scraper seat 4 and other parts is prolonged.
The embodiment of the utility model provides a still provide a coal pulverizer, be equipped with spring scraper 7 device. The coal pulverizer is provided with this kind of spring scraper 7 device, can improve the effect and the efficiency of cleaning the stone coal, can also avoid the maintenance of trouble and shut down the frequency, reduces cost of maintenance, has good economic value to the enterprise.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. Coal pulverizer spring scraper means, its characterized in that includes:
the scraper seat is used for being fixed at the bottom of a grinding disc of the coal mill;
the scraping plate shaft is fixedly arranged on the scraping plate seat;
the scraper is rotatably arranged on the scraper shaft; and
and the torsional spring is arranged on the scraper shaft, is connected with the scraper and is used for providing torque force for the scraper.
2. The coal pulverizer spring scraper apparatus of claim 1, wherein the scraper shaft is provided with a retaining sleeve, a first end of the torsion spring is connected to the retaining sleeve, and a second end of the torsion spring is connected to the scraper.
3. The coal pulverizer spring scraper apparatus of claim 2, wherein the retaining bushing is provided with a raised eccentric mass, and the first end of the torsion spring is lapped over the eccentric mass.
4. The coal pulverizer spring scraper apparatus of claim 2, wherein the scraper is provided with a locating sleeve for limiting a torsion spring, and the second end of the torsion spring is inserted into the locating sleeve.
5. The coal pulverizer spring scraper device of claim 2, wherein the scraper includes a connecting plate and a scraper body, the connecting plate is provided with two lug seats rotatably connected to the scraper shaft, the retaining sleeve is retained between the two lug seats and adjacent to one of the lug seats, the torsion spring is retained between the retaining sleeve and the lug seat away from the retaining sleeve, and the scraper body is fixedly connected to the connecting plate through a bolt.
6. The coal pulverizer spring scraper apparatus of claim 5, wherein the plurality of bolts connecting the scraper body are connected together by anti-rotation plates.
7. The coal pulverizer spring scraper apparatus of claim 5, wherein a backing plate is further provided on the connecting plate, and a plurality of bolts pass through the same backing plate and the connecting plate is connected to the scraper body.
8. The coal pulverizer spring scraper apparatus of claim 5, wherein the lug base is provided with a through hole, and a wear sleeve is provided in the through hole, and the scraper is rotatably connected to the scraper shaft through the wear sleeve.
9. The coal pulverizer spring scraper apparatus of claim 1, wherein the scraper base is provided with two support plates, the two ends of the scraper shaft are connected to the support plates, and wear washers are provided between the scraper and the support plates.
10. Coal pulverizer, characterized in that a spring scraper device according to any of claims 1-9 is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120441565.9U CN214515170U (en) | 2021-03-01 | 2021-03-01 | Coal mill spring scraper device and coal mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120441565.9U CN214515170U (en) | 2021-03-01 | 2021-03-01 | Coal mill spring scraper device and coal mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214515170U true CN214515170U (en) | 2021-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120441565.9U Active CN214515170U (en) | 2021-03-01 | 2021-03-01 | Coal mill spring scraper device and coal mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214515170U (en) |
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2021
- 2021-03-01 CN CN202120441565.9U patent/CN214515170U/en active Active
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